Abstract
The present disclosure provides a carrier mounting part disposed on a swing arm rotatably connected to a bracket of a seat. The carrier mounting part includes: a rotating base; and a fixed base. The rotating base is provided with engaging parts, and the fixed base is provided with a positioning part. Alternatively, the rotating base is provided with an engaging part, and the fixed base is provided with positioning parts. One of the rotating base and the fixed base is provided with a side wall, and the side wall is provided with the engaging part or the positioning part. The engaging part or the positioning part disposed on the side wall includes an elastic protrusion. When the rotating base and the fixed base are relatively fixed, the elastic protrusion abuts against the engaging part or the positioning part. The present disclosure also relates to a seat.
Claims
1. A carrier mounting part, disposed on a swing arm rotatably connected to a bracket of a seat, for mounting a carrier, wherein the carrier mounting part comprises: a rotating base configured to connect to the carrier; and a fixed base configured to connect to the swing arm, the rotating base being rotatably connected to the fixed base around an axis, wherein the rotating base is provided with at least two engaging parts, the at least two engaging parts being spaced apart in a circumferential direction around the axis, and the fixed base is provided with at least one positioning part, wherein when any one of the engaging parts abuts against the same positioning part in the circumferential direction, the rotating base is fixed relative to the fixed base; or the rotating base is provided with at least one engaging part, and the fixed base is provided with at least two positioning parts, the at least two positioning parts being spaced apart in a circumferential direction, wherein when the same engaging part abuts against any one of the positioning parts in the circumferential direction, the rotating base is fixed relative to the fixed base; wherein one of the rotating base and the fixed base is provided with at least one side wall extending along the circumferential direction, the at least one side wall is correspondingly provided with the engaging part or the positioning part, and the engaging part or the positioning part provided on the at least one side wall comprises an elastic protrusion located on the at least one side wall and capable of elastically deforming in a radial direction perpendicular to the axis, wherein when the rotating base is fixed relative to the fixed base, the elastic protrusion abuts against the engaging part or the positioning part correspondingly formed on the other one of the rotating base and the fixed base in the circumferential direction.
2. The carrier mounting part according to claim 1, wherein, the engaging part or the positioning part provided on the at least one side wall is a positioning recess, the positioning recess comprises two elastic protrusions spaced apart and the at least one side wall located between the two elastic protrusions, and the engaging part or the positioning part correspondingly formed on the other one of the rotating base and the fixed base is a positioning protrusion, wherein when the rotating base is fixed relative to the fixed base, the two elastic protrusions abut against the positioning protrusion in the circumferential direction.
3. The carrier mounting part according to claim 2, wherein, the at least one side wall is two side walls, the two side walls are spaced apart in the radial direction, and the two side walls are connected to each other through at least one connecting rib, wherein the positioning recess is provided on one of the two side walls, and the connecting rib is disposed opposite to one of the two side walls between the two elastic protrusions of the positioning recess in the radial direction.
4. The carrier mounting part according to claim 1, wherein, one of the rotating base and the fixed base is provided with an inner side wall and an outer side wall extending along the circumferential direction, the inner side wall is located inside of the outer side wall and spaced apart from the outer side wall in the radial direction, and the inner side wall and/or the outer side wall is the at least one side wall, the engaging part or the positioning part formed on the other one of the rotating base and the fixed base is located between the inner side wall and the outer side wall.
5. The carrier mounting part according to claim 4, wherein, the elastic protrusion is formed by protruding in the radial direction outward from the inner side wall and/or protruding in the radial direction inward from the outer side wall.
6. The carrier mounting part according to claim 1, wherein, one of the rotating base and the fixed base is provided with two inner side walls and two outer side walls, the two inner side walls are spaced apart in the radial direction and connected to each other through at least one second connecting rib, the two outer side walls are spaced apart in the radial direction and connected to each other through at least one first connecting rib, and the engaging part or the positioning part formed on the other one of the rotating base and the fixed base is located between an inner side wall in the radial outside of the two inner side walls and an outer side wall in the radial inside of the two outer side walls, and the elastic protrusion is formed by protruding in the radial direction outward from the inner side wall in the radial outside of the two inner side walls and/or protruding in the radial direction inward from the outer side wall in the radial inside of the two outer side walls, the inner side wall in the radial outside of the two inner side walls and/or the outer side wall in the radial inside of the two outer side walls.
7. A seat, comprising: a base; a carrier located above the base; a bracket extending upward from the base; a swing arm having one end connected to the carrier and the other end pivotally connected to the bracket; and the carrier mounting part according to claim 1 disposed at the end of the swing arm connected to the carrier.
8. The seat according to claim 7, wherein, further comprising at least one wheel, the at least one wheel is provided on the bracket or the base, and the at least one wheel is not in contact with a horizontal plane when the seat is placed on the horizontal plane.
9. The seat according to claim 7, wherein, the swing arm is provided with a lower connecting part and at least one reinforcement part fixedly connected to the fixed base, the lower connecting part is inserted into the fixed base in a direction perpendicular to the axis, and the at least one reinforcement part is inserted into the lower connecting part in a direction intersecting with the extending direction of the lower connecting part and spaced apart from the axis.
10. The seat according to claim 9, wherein, the positioning part is disposed opposite to the lower connecting part along the extending direction of the lower connecting part.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] FIG. 1 shows a rear perspective view of a seat according to the present disclosure.
[0015] FIG. 2 shows a side view of the seat in FIG. 1.
[0016] FIG. 3 shows a cross-sectional view of the seat in FIG. 2 taken along a section line A-A.
[0017] FIG. 4 shows a front perspective view of the seat in FIG. 1.
[0018] FIG. 5 shows a front perspective view of the seat in FIG. 4 after the carrier is rotated by 180.
[0019] FIG. 6 shows a front perspective view of the seat in FIG. 5 after the carrier is rotated by 90.
[0020] FIG. 7 shows a front perspective view of the seat in FIG. 6 after the carrier is rotated by 180.
[0021] FIG. 8 shows a perspective view of the carrier in FIG. 1.
[0022] FIG. 9 shows a perspective view of the seat in FIG. 1 after the carrier is removed.
[0023] FIG. 10 shows a perspective view of a swing arm and the carrier mounting part in FIG. 9.
[0024] FIG. 11 shows a top view of FIG. 10 and a cross-sectional view taken along a section line B-B.
[0025] FIG. 12 shows an enlarged view of a partial portion C of FIG. 11.
[0026] FIG. 13 shows a bottom perspective view of a rotating base in FIG. 10.
[0027] FIG. 14 shows a top perspective view of FIG. 10 after the rotating base is hidden.
[0028] FIG. 15 shows a side view of FIG. 10 and a cross-sectional view taken along a section line D-D.
Reference numbers are listed as follows: [0029] 1 seat [0030] 10 carrier [0031] 11 connecting base [0032] 12 underframe [0033] 13 connecting frame [0034] 14 handle [0035] 15 armrest frame [0036] 16 connecting slot [0037] 17 support rod [0038] 20 swing arm [0039] 21 upper connecting part [0040] 22 lower connecting part [0041] 24 reinforcement part [0042] 31 pivot part [0043] 32 connector [0044] 30 bracket [0045] 40 base [0046] 50 wheel [0047] 100 carrier mounting part [0048] 110 rotating base [0049] 111 connecting protrusion [0050] 112 side wall, outer side wall [0051] 113 engaging part, positioning recess [0052] 114 elastic protrusion [0053] 115 side wall, inner side wall [0054] 116A first connecting rib [0055] 116B second connecting rib [0056] 117A first buffer part [0057] 117B second buffer part [0058] 118 fixing part [0059] 120 fixed base [0060] 121 positioning part, positioning protrusion [0061] 1221 transverse rib [0062] 23 connecting shaft [0063] A-A section line [0064] B-B section line [0065] C partial portion [0066] D-D section line [0067] X axis
DETAILED DESCRIPTION
[0068] Although the present disclosure has been illustrated and described with reference to specific embodiments, the present disclosure should not be limited to the details shown. Rather, various modifications may be made to these details within a scope of the equivalent claims without departing from a spirit of the present disclosure.
[0069] Directional descriptions such as front, rear, upper and lower mentioned in the present disclosure are for ease of understanding only. The present disclosure is not limited to these directions and may be adjusted according to actual circumstances. Although the present disclosure has been described with reference to exemplary embodiments, the terms used are explanatory and exemplary, rather than restrictive.
[0070] FIG. 1 shows a rear perspective view of a seat 1 according to the present disclosure. The seat 1 is designed to soothe or assist an infant in falling asleep. According to the present disclosure, the seat 1 includes: a base 40 configured to allow the seat 1 to be more stably placed on the ground; a carrier 10 located above the base 40 and configured to carry an infant; a bracket 30 extending upward from the base 40 and configured to connect to the carrier 10 and suspend the carrier 10 above the base 40; and a swing arm 20 having one end rotatably connected to the carrier 10, and the other end pivotally or in pivotable manner connected to the bracket 30, such that the carrier 10 may rotate relative to the swing arm 20 and swing relative to the bracket 30. For example, swing left and right relative to the bracket 30. The base 40 and the bracket 30 of the seat 1 may be integrally or separately configured. According to the present embodiment, the base 40 is configured as a rod member, which forms an enclosed space. And in other embodiments, the base 40 may also be formed by a continuous plate. When the carrier 10 is stationary relative to the base 40, a central area of the carrier 10 is approximately located directly above the base 40 and its enclosed space, to provide stable support for the carrier 10 and prevent the carrier 10 from tipping over. The bracket 30 extends upward from a rear side edge of the base 40, and wheels 50 are provided at a lower rear side of the bracket 30. When the seat 1 is placed on a horizontal plane as shown in FIG. 1, the wheels 50 do not contact the ground. When it is necessary to change the usage location, the seat 1 may be tilted backward so that the wheels 50 may contact the ground and roll, facilitating transportation. According to the present embodiment, the wheels 50 are provided in two, respectively located on opposite sides of the bracket 30. Alternatively, the wheels 50 may also be disposed on the base 40.
[0071] According to the present disclosure, to facilitate the infant's seating and to allow the infant to be placed in different swing directions, the carrier 10 of the seat 1 is configured to rotate relative to the base 40, the bracket 30, and the swing arm 20. According to the present disclosure, the carrier 10 includes a connecting base 11, an underframe 12, an armrest frame 15, two connecting frames 13, a support rod 17, and a handle 14. The connecting base 11 is configured to connect to the swing arm 20. The underframe 12 is connected to the connecting base 11. And the underframe 12 is configured in a frame shape. Specifically, the connecting base 11 is connected to two opposite sides of the underframe 12, for example, the underframe 12 forms a generally rectangular frame and is connected to the longer opposite sides of the underframe 12. And the underframe 12 may be directly supported on the ground after the carrier 10 is removed from the swing arm 20. The underframe 12 may be configured with upwardly curved sides (see FIG. 2), which is advantageous for independently functioning as a cradle on the ground. The armrest frame 15 is located above the underframe 12 and also configured in a frame shape for fixing an upper periphery of a seat fabric supporting the infant. The two connecting frames 13 are spaced apart and respectively connected to the underframe 12 and the armrest frame 15. And the two connecting frames 13 connected to the connecting base 11. For example, the two connecting frames 13 are respectively connected to the two ends of the connecting base 11 at two connection points of the two connecting frames 13 and the underframe 12. The support rod 17 is located between the armrest frame 15 and the underframe 12, with both ends respectively connected to the two connecting frames 13 and configured in a U-shape. For example, the two ends of the support rod 17 are respectively connected to the two connection points of the two connecting frames 13 and the armrest frame 15. And the ends of the support rod 17 connected to the connecting frames 13 are higher than the other parts of the support rod 17. The support rod 17 extends forward toward an end of the armrest frame 15 without exceeding the end of the armrest frame 15. And the support rod 17 is configured to extend downward between the two ends of the armrest frame 15 to support a bottom of an inner lining material carrying the infant. The handle 14 is connected to the armrest frame 15 and located above the armrest frame 15. The two connection points of the two ends of the handle 14 to the armrest frame 15 correspond to the two connection points of the armrest frame 15 to the two connecting frames 13, which can allow the user to carry the carrier 10 by using the handle 14.
[0072] According to the present disclosure, the seat 1 is provided with a carrier mounting part 100 at an end of the swing arm 20 connected to the connecting base 11. The carrier mounting part 100 includes a rotating base 110 and a fixed base 120, which may rotate relative to each other around an axis X. The fixed base 120 is fixedly connected to the swing arm 20, and the rotating base 110 is detachably connected to the carrier 10 and cannot rotate relative to the carrier 10, so that an orientation of the carrier 10 relative to the swing arm 20 may be adjusted by rotating the rotating base 110 relative to the fixed base 120. Specifically, the connecting base 11 is detachably connected to the rotating base 110 of the carrier mounting part 100. For example, the connecting base 11 may be sleeved over an outside of the rotating base 110 from above. The specific implementation of the rotating base 110 will be explained in detail based on the subsequent drawings.
[0073] FIG. 2 shows a side view of the seat 1 according to the present disclosure. In FIG. 2, it can be seen that the fixed base 120 of the carrier mounting part 100 is fixedly connected to an end of the swing arm 20, while the rotating base 110 of the carrier mounting part 100 is connected to the connecting base 11 of the carrier 10. The connecting base 11 is further connected to the underframe 12 and the connecting frame 13, and the connecting frame 13 is connected to the support rod 17, the armrest frame 15, and the handle 14. As a result, the weight of the carrier 10 and the infant is stably supported by the swing arm 20 through the carrier mounting part 100. And the carrier mounting part 100 is located directly above the enclosed space formed by the base 40 in a vertical direction, to prevent the seat 1 from tipping over. The side view of the underframe 12 is curved, with the lowest part of the curve located at the middle of the underframe 12 and aligned vertically with the connecting base 11. When the carrier 10 is supported on the ground, the lowest part of the curve contacts the ground. If an external force is applied to the carrier 10 at this time, the carrier 10 may swing around the lowest point of the curve to soothe or assist the infant in falling asleep. The swing arm 20 is designed in a generally L-shape, and the other end of the swing arm 20 is pivotally connected to an upper part of the bracket 30. According to the present embodiment, the swing arm 20 is provided with a pivot part 31 for pivoting with the bracket 30. The pivot part 31 in FIG. 2 may pivot relative to the bracket 30 in a direction perpendicular to a paper plane. The rest of the swing arm 20 is inserted into the pivot part 31 from below at an angle and is fixedly connected to the pivot part 31 using a connector 32, such as a bolt or pin, so as to swing together with the pivot part 31 relative to the bracket 30.
[0074] From FIG. 2, it can also be seen that the wheels 50 do not contact the ground when the seat 1 is placed flat on the ground, which can advantageously prevent the seat 1 from being inadvertently moved. Only when the seat 1 is tilted backward, the wheels 50 may contact the ground and roll.
[0075] FIG. 3 shows a bottom cross-sectional view of the seat 1 according to the present disclosure, taken along a section line A-A in FIG. 2. From FIG. 3, it can be seen that the carrier mounting part 100 is located at a center of the underframe 12 and the armrest frame 15 of the carrier 10. The fixed base 120 of the carrier mounting part 100 is located at the middle of the connecting base 11, which may be molded from hard materials such as plastic.
[0076] FIGS. 4, 5, 6, and 7 show front perspective views of the seat 1 with the carrier 10 according to the present disclosure at different angles. Based on the position of the support rod 17, the position of the feet of the infant seated in the carrier 10 may be determined. After the infant is seated in the carrier 10, FIG. 4 shows that the infant's face will face forward, FIG. 5 shows that the infant's face will face backward, FIG. 6 shows that the infant's face will face to the left, and FIG. 7 shows that the infant's face will face to the right. According to the present disclosure, the rotation of the carrier 10 relative to the swing arm 20, the bracket 30, and the base 40 is achieved by the rotation of the rotating base 110 relative to the fixed base 120.
[0077] FIG. 8 shows a perspective view of the carrier 10 according to the present disclosure. The carrier 10 may be clearly seen in FIG. 8. According to the present embodiment, the center of the connecting base 11 is provided with a connecting slot 16. The connecting slot 16 is a through-hole penetrating the connecting base 11, and the rotating base 110 of the carrier mounting part 100 is inserted upward into the connecting slot 16 to connect with the carrier 10. According to the present embodiment, the connecting slot 16 is configured to be similar to a cross and has four slot holes, but the present disclosure is not limited thereto.
[0078] FIG. 9 shows a perspective view of the seat 1 according to the present disclosure after the carrier 10 is removed. The swing arm 20 to swing left and right relative to the bracket 30 manually or electrically when the seat 1 is in use. When an electric method is used, a motor may be disposed in the pivot part 31 to drive the swing arm 20 to swing relative to the bracket 30.
[0079] In FIG. 9, it can be seen that the rotating base 110 includes a connecting protrusion 111 at its center. The connecting protrusion 111 is configured to be inserted into the connecting slot 16 of the connecting base 11 shown in FIG. 8 and is shaped in a cross shape corresponding to the connecting slot 16. According to the present embodiment, the connecting protrusion 111 is composed of four protrusions spaced apart circumferentially around the axis X. Advantageously, at least one of the four protrusions may differ in shape from the others, and at least one of the four slot holes of the connecting slot 16 is configured to correspond to the at least one protrusion, while the remaining slot holes are configured to match the other protrusions. This arrangement can ensure that the rotating base 111 and the connecting base 11 of the carrier 10 may only be assembled in a specific direction, thereby avoiding assembly errors. Additionally, since outer edges of both the connecting protrusion 111 and the connecting slot 16 are non-circular, the connecting base 11 may not rotate relative to the rotating base 110 after the connecting protrusion 111 is inserted into the connecting slot 16, that is, the carrier 10 may not rotate relative to the rotating base 110, and both may only rotate together relative to the fixed base 120.
[0080] FIG. 10 shows a perspective view of the swing arm 20 and the carrier mounting part 100 according to the present disclosure. The swing arm 20 may be integrally formed or assembled from a plurality of parts as shown in FIG. 10. An upper connecting part 21 of the swing arm 20 is thinner than other parts of the swing arm to facilitate insertion into the pivot part 31 shown in FIG. 9. The connector 32 shown in FIG. 9 may be inserted into a perforation in the upper connecting part 21 to fix the pivot part 31 and the upper connecting part 21.
[0081] FIG. 11 shows a top view and a cross-sectional view of the swing arm 20 and the carrier mounting part 100 according to the present disclosure. A left view in FIG. 11 is a top view of FIG. 10, and a right view in FIG. 11 is a cross-sectional view taken along a section line B-B of the left view. FIG. 12 is an enlarged view of partial portion C in FIG. 11. The swing arm 20 may be made of hollow tubing, thereby saving weight and material. The outer edge of the carrier mounting part 100 is circular, and the connecting protrusion 111 is located at the center of the carrier mounting part 100.
[0082] From the right view in FIG. 11, an internal structure of the carrier mounting part 100 can be seen. The lower connecting part 22 of the swing arm 20 extends into the fixed base 120 from the side of the fixed base 120 of the carrier mounting part 100 in a direction perpendicular to the axis X and is fixedly connected to the fixed base 120 together with a reinforcement part 24 of the swing arm 20. The structure of the reinforcement part 24 is shown in FIG. 14. The carrier mounting part 100 further includes a connecting shaft 23 connecting the fixed base 120 and the rotating base 110. The connecting shaft 23 extends along the axis X. The connecting shaft 23 may be, for example, a rivet or a bolt.
[0083] FIG. 12 provides a clearer view of details of the partial portion C in FIG. 11. The connecting shaft 23 is inserted from above into the fixing part 118 of the rotating base 110, and a head of the connecting shaft 23 is engaged with a boss inside the fixing part 118 of the rotating base 110. The other end of the connecting shaft 23 passes through the fixing part 118 of the rotating base 110 and a perforation in the lower connecting part 22, extends below the fixed base 120, so that the rotating base 110 may rotate relative to the fixed base 120 around the axis X. The rotating base 110 is provided with spaced side walls 112 and 115 along a radial direction perpendicular to the axis X. The side walls 112 and 115 extend along the circumferential direction around the axis X, respectively. According to this embodiment, The rotating base 110 is provided with two adjacent outer side walls 112 and two adjacent inner side walls 115 are spaced apart in the radial direction perpendicular to the axis X. That is, the number of the outer side wall 112 and the number of inner side wall 115 are respectively set to two, as shown in FIG. 13. The positioning part 121 of the fixed base 120 is located between the outer side wall 112 and the inner side wall 115, specifically the positioning part 121 between the outer side wall 112 located radial inside of the two adjacent outer side walls 112 and the inner side wall 115 located radial outside of the two inner side walls 115. The positioning part 121 of the fixed base 120 may abut against the outer side wall 112 or the inner side wall 115, or both. According to this embodiment, along an extending direction of the lower connecting part 22, the positioning part 121 is arranged opposite to the lower connecting part 22 and has a gap, which advantageously allows the positioning part 121 to partially deform elastically. Alternatively, the positioning part 121 may abut against the lower connecting part 22, i.e., against the end of the lower connecting part 22. In this case, it can provide greater support to the positioning part 121.
[0084] According to this embodiment, the reinforcement part 24 of the lower connecting part 22 is, for example, a hollow tube and is provided in two, intersecting perpendicularly with the extending direction of the lower connecting part 22 and spaced apart from the axis X, thereby enhancing the stability of the connection between the lower connecting part 22 and the fixed base 120.
[0085] FIG. 13 shows a bottom view of the rotating base 110 according to the present disclosure. The rotating base 110 may be molded from plastic or made in other ways, and an interior of the connecting protrusion 111 may be molded as a hollow portion, thereby saving the materials. The center of the hollow portion is molded with a fixing part 118 for inserting the connecting shaft 23 shown in FIG. 11.
[0086] According to this embodiment, the outer side wall 112 is formed around the axis X and extends downward along the axis X. The outer side wall 112 is configured to abut against the fixed base 120 in the radial direction perpendicular to the axis X to prevent radial movement of the rotating base 110 relative to the fixed base 120, which could cause misalignment of two along the radial direction perpendicular to the axis X. According to the present embodiment, one of the two outer side walls 112 is located in a radial inside of the other one of the two outer side walls 112. The outer side wall located in the radial outside is arranged along an outer periphery of the rotating base 110, and the two outer side walls 112 are spaced apart to form a first buffer part 117A. At least one first connecting rib 116A connects the two outer side walls 112. A plurality of first connecting ribs 116A are evenly spaced circumferentially around the axis X, enhancing the connection between the two outer side walls 112 while reducing material usage compared to a continuous connection between the two outer side walls 112. In other embodiments, the rotating base 110 may have only one outer side wall 112, which is disposed along the outer periphery of the rotating base 110.
[0087] According to this embodiment, the inner side wall 115 is formed around the axis X and extends downward along the axis X. The inner side wall 115 is located inside the outer side wall 112 and radially spaced apart from the outer side wall 112. According to the present embodiment, one of the two inner side walls 115 is located at a radial inside of the other one of the two inner side walls 115. The inner side wall 115 located in the radial inside is approximately aligned vertically with the outer periphery of the connecting protrusion 111, which allows the rotational force on the connecting protrusion 111 to be better transmitted to the two inner side walls 115. A second buffer part 117B is also formed between the two inner side walls 115, and at least one second connecting rib 116B connects the two side walls 115. A plurality of second connecting ribs 116B are evenly spaced circumferentially around the axis X, enhancing the connection between the two inner side walls 115 while reducing the material usage compared to the continuous connection between the two inner side walls 115. In other embodiments, the rotating base 110 may have only one inner side wall 115, and the inner side wall 115 is approximately aligned vertically with the outer periphery of the connecting protrusion 111 or located at a radial outside of the outer periphery of the connecting protrusion 111.
[0088] According to the present disclosure, at least two, preferably four, engaging parts 113 are disposed on the inner side wall 115 in the radial outside of the two inner side walls 115. The four engaging parts 113 are evenly spaced on the outer layer of the inner side wall 115 and are configured to cooperate with the positioning part 121 provided on the fixed base 120 (see FIG. 14) to position the rotating base 110 relative to the fixed base 120 in four different positions, thereby positioning the carrier 10 relative to the swing arm 20, the bracket 30, and the base 40 in four different positions, as shown in FIGS. 4 to 7. According to the present embodiment, the engaging parts 113 are configured as positioning recesses 113. Each of the positioning recesses 113 including two elastic protrusions 114 protruding outward from the inner side wall 115 in the radial outside of the two inner side walls 115 in the radial direction perpendicular to the axis X. Specifically, the elastic protrusions 114 are formed by locally outward curving of the outer side wall 115, and the edges of the elastic protrusions 114 are curved. Alternatively, the elastic protrusions 114 may be formed in other ways. The two elastic protrusions 114 and the inner side wall 115 in the radial outside of the two inner side walls 115 between the two elastic protrusions 114 form the positioning recess 113, which cooperates with the positioning part 121 provided on the fixed base 120 (see FIG. 14). For example, the positioning part 121 is engaged in the positioning recess 113 between the two elastic protrusions 114. According to the present disclosure, the elastic protrusions 114 may be omitted, and the inner side wall 115 in the radial outside of the two inner side walls 115 may be inwardly curved in the radial direction to form the positioning recess 113 of the present disclosure, but the present disclosure is not limited thereto. Advantageously, the engaging parts 113 are arranged opposite to the second connecting ribs 116B in the radial direction perpendicular to the axis X to enhance the strength of the positioning recess 113. Specifically, the second connecting ribs 116B are arranged radially opposite to the inner side wall 115 in the radial outside of the two inner side walls 115 between the two elastic protrusions 114 of the corresponding positioning recess 113, thereby enhancing the engagement between the positioning recess 113 and the positioning part 121 on the fixed base 120.
[0089] Additionally, the engaging parts 113 may be disposed on the outer side wall 112 in the radial inside of the two outer side walls 112. Specifically, the engaging parts 113 are configured as the positioning recesses 113, and each of the positioning recesses 113 includes two elastic protrusions 114 protruding inward from the outer side wall 112 in the radial inside of the two outer side walls 112 in the radial direction perpendicular to the axis X.
[0090] FIG. 14 shows a top perspective view of the swing arm 20 and the fixed base 120 according to the present disclosure. In FIG. 14, a structure of the lower connecting part 22 of the swing arm 20 may be seen. The lower connecting part 22 is provided with at least one, preferably two or more, reinforcement parts 24. The reinforcement parts 24 are, for example, rods or tubes and extend transversely through the lower connecting part 22 in a direction perpendicular to the extending direction of the lower connecting part 22. The reinforcement parts 24 are spaced apart from the axis X, specifically located on both sides of the axis X along the extending direction of the lower connecting part 22. The reinforcement parts 24 and the lower connecting part 22 are provided with a plurality of perforations for fixing the lower connecting part 22 and the reinforcement parts 24 to the fixed base 120 of the carrier mounting part 100 respectively, thereby increasing the number of fixed points between the swing arm 20 and the fixed base 120 and achieving a more stable connection between the two. FIG. 14 also shows the connecting shaft 23 for connecting the fixed base 120 and the rotating base 110.
[0091] According to the present disclosure, the fixed base 120 is provided with one positioning part 121, for cooperating with the engaging part 113 or the positioning recess 113 provided on the rotating base 110 shown in FIG. 13 in the circumferential direction around the axis X, to limit the rotation of the rotating base 110 relative to the fixed base 120 around the axis X. This can ensure that the rotating base 110 and the fixed base 120 are relatively fixed, thereby fixing the carrier 10 relative to the swing arm 20 to position the carrier 10. According to the present disclosure, the positioning part 121 is configured as a positioning protrusion 121 protruding upward from the bottom of the fixed base 120. The positioning protrusion 121 may be solid or hollow. As shown in FIG. 14, the positioning protrusion 121 is configured as a hollow elliptical structure with a transverse rib 1221 inside to enhance a strength of the positioning protrusion 121. The positioning protrusion 121 is disposed opposite to the lower connecting part 22 along the extending direction of the lower connecting part 22 of the swing arm 20, or may abut against the lower connecting part 22, so that the lower connecting part 22 can provide stable support to the positioning protrusion 121. In other embodiments, multiple positioning protrusions 121 may be evenly spaced circumferentially around the axis X, but the present disclosure is not limited thereto.
[0092] FIG. 15 shows a side view and a cross-sectional view of the swing arm 20 and the carrier mounting part 100 according to the present disclosure. The upper view in FIG. 15 is a cross-sectional view taken along a section line D-D in the lower view, allowing a portion of the rotating base 110 and the fixed base 120 to be seen.
[0093] The positioning protrusion 121 protruding upward from the fixed base 120 is located between the outer side wall 112 in the radial inside of the two outer side walls 112 and the inner side wall 115 in the radial outside of the two inner side walls 115, and abuts against the outer side wall 112 and the inner side wall 115. The positioning protrusion 121 is currently engaged in a positioning recess 113 of the rotating base 110 and abuts against the elastic protrusions 114 at both ends of the positioning recess 113 in the circumferential direction around the axis X, to limit the rotation of the positioning protrusion 121 relative to the corresponding positioning recess 113. When the orientation of the carrier 10 is adjusted, the rotating base 110 rotates relative to the fixed base 120 as the user turns the carrier 10. The elastic protrusion 114 on a trailing side of the rotation direction deforms radially into the corresponding second buffer part 117B due to the resistance of the positioning protrusion 110, to cause the positioning protrusion 110 to disengage from the positioning recess 113. As the rotating base 110 continues to rotate, for example, by 900 as shown in FIG. 15, the positioning protrusion 110 re-engages with another positioning recess 113, to change the orientation of the carrier 10 by 90 degrees and positioning the carrier 10. In this manner, the carrier 10 may be positioned in the four orientations shown in FIGS. 4 to 7 respectively.
[0094] Alternatively, the positioning protrusion 121 may be disposed on the rotating base 110, and the positioning recess 113 may be disposed on the fixed base 120, i.e., the engaging part 113 is configured as the positioning protrusion 121, and the positioning part 121 is configured as the positioning recess 113. The fixed base 121 is provided with the inner side wall 115 or the outer side wall 112 forming the positioning recess 113.
[0095] Alternatively, at least two, preferably four, positioning protrusions 121 may be disposed on the fixed base 120, spaced apart circumferentially around the axis X, while the rotating base 110 is provided with, for example, only one positioning recess 113. The positioning recess 113 cooperates with different positioning protrusions 121 to position the carrier 10 at different locations.
[0096] By providing the engaging part 113 and the positioning part 121, such as the positioning protrusion 121 and the positioning recess 131, cooperated with each other on the fixed base 120 and the rotating base 110, respectively, so that the rotational positioning of the carrier 10 can be achieved with few parts, a simple structure, and convenient operation.
[0097] Since the present disclosure may be implemented in various forms without departing from the spirit and essence of the disclosure, it should be understood that the aforementioned embodiments are not limited to any of the foregoing details. Instead, they should be interpreted in a broadest sense within the scope defined by the claims. Therefore, all changes falling within the scope of the claims or their equivalents shall be covered by the claims.
