Gimbal structure and gear adjusting mechanism thereof

Abstract

A quick release mechanism includes a rotating member, a slider, and a screw connecting the slider with the rotating member. The rotating member is configured to be arranged on a first side of a first gimbal support frame of a gimbal. The slider is configured to be arranged on a second side of the first gimbal support frame that is opposite to the first side, and between the first gimbal support frame and a second gimbal support frame of the gimbal. The screw is configured to penetrate the first gimbal support frame, drive the slider to move in a first direction to abut between the first gimbal support frame and the second gimbal support frame, and drive the slider to move in a second direction opposite to the first direction to be released from the first gimbal support frame and the second gimbal support frame.

Claims

1. A quick release mechanism for a gimbal comprising: a rotating member configured to be arranged on a first side of a first gimbal support frame of the gimbal; a slider configured to be arranged on a second side of the first gimbal support frame that is opposite to the first side, and between the first gimbal support frame and a second gimbal support frame of the gimbal; and a screw connected with the rotating member, wherein the screw: penetrates the first gimbal support frame; drives the slider to move in a first direction to abut between the first gimbal support frame and the second gimbal support frame, so as to lock the first gimbal support frame and the second gimbal support frame; and drives the slider to move in a second direction opposite to the first direction to be released from the first gimbal support frame and the second gimbal support frame, so as to unlock the first gimbal support frame and the second gimbal support frame.

2. The quick release mechanism of claim 1, wherein the slider includes: a first block; and a second block connected to the first block at an angle larger than 0 degrees.

3. The quick release mechanism of claim 2, wherein a surface of the first block of the slider includes an inclined surface configured to abut the second gimbal support frame.

4. The quick release mechanism of claim 1, wherein the rotating member is configured to: rotate in a first rotation direction to cause the screw to drive the slider to move in the first direction; and rotate in a second rotation direction to cause the screw to drive the slider to move in the second direction.

5. The quick release mechanism of claim 1, wherein the rotating member includes: a rotating shaft having a cylindric structure; and a rotating body having a cylindric structure and sleeved on an outer peripheral of the rotating shaft, a circle center of the rotating body being spaced apart from a circle center of the rotating shaft, the rotating body being configured to rotate relative to the rotating shaft to drive the screw to move.

6. The quick release mechanism of claim 5, wherein: the rotating member further includes a lug extending outward from a side of the rotating body away from the circle center of the rotating body; the rotating body includes a first portion having a maximum radius and a second portion having a minimum radius; and the rotating body is configured to, in response to the lug being operated, rotate around the rotating shaft between a first state in which the first portion abuts against the portion of the first gimbal support frame and a second state in which the second portion abuts against the portion of the first gimbal support frame.

7. The quick release mechanism of claim 6, wherein: the rotating shaft includes a through hole extending along a direction approximately perpendicular to a longitudinal direction of the rotating shaft; the screw is inserted in the through hole; and the screw is configured to pull the slider to lock the slider when the rotating body is in the first state and release the slider to unlock the slider when the rotating body is in the second state.

8. The quick release mechanism of claim 1, wherein the screw is threadedly engaged with the slider.

9. A gimbal comprising: a first gimbal support frame; a second gimbal support frame configured to move relative to the first gimbal support frame to adjust a center of gravity of the gimbal; and a quick release mechanism including: a rotating member arranged on a first side of the first gimbal support frame; a slider arranged on a second side of the first gimbal support frame that is opposite to the first side, and between the first gimbal support frame and the second gimbal support frame; and a screw connected with the rotating member, wherein the screw: penetrates the first gimbal support frame; drives the slider to move in a first direction to abut between the first gimbal support frame and the second gimbal support frame, so as to lock the first gimbal support frame and the second gimbal support frame; and drives the slider to move in a second direction opposite to the first direction to be released from the first gimbal support frame and the second gimbal support frame, so as to unlock the first gimbal support frame and the second gimbal support frame.

10. The gimbal of claim 9, wherein the slider includes: a first block; and a second block connected to the first block at an angle larger than 0 degrees.

11. The gimbal of claim 10, wherein a surface of the first block of the slider includes an inclined surface configured to abut the second gimbal support frame.

12. The gimbal of claim 10, wherein: the first gimbal support frame includes a groove on the second side; and the first block is received in the groove.

13. The gimbal of claim 12, wherein: a width of the first block is smaller than a width of the groove; and the first block is configured to move in a width direction of the groove.

14. The gimbal of claim 9, wherein: the first gimbal support frame includes two clamping arms; and the second gimbal support frame is partially accommodated between the two clamping arms.

15. The gimbal of claim 14, wherein: the two champing arms are configured to be arranged at one end of the first gimbal support frame; each of the two clamping arms includes a groove on a side of the each of the two clamping arms; and each side of the second gimbal support frame includes a boss matching the groove and configured to slide along surfaces of the groove.

16. The gimbal of claim 9, wherein the rotating member is configured to: rotate in a first rotation direction to cause the screw to drive the slider to move in the first direction; and rotate in a second rotation direction to cause the screw to drive the slider to move in the second direction.

17. The gimbal of claim 9, wherein the rotating member includes: a rotating shaft having a cylindric structure; and a rotating body having a cylindric structure and sleeved on an outer peripheral of the rotating shaft, a circle center of the rotating body being spaced apart from a circle center of the rotating shaft, the rotating body being configured to rotate relative to the rotating shaft to drive the screw to move.

18. The gimbal of claim 17, wherein: the rotating member further includes a lug extending outward from a side of the rotating body away from the circle center of the rotating body; the rotating body includes a first portion having a maximum radius and a second portion having a minimum radius; and the rotating body is configured to, in response to the lug being operated, rotate around the rotating shaft between a first state in which the first portion abuts against the portion of the first support frame and a second state in which the second portion abuts against the portion of the first support frame.

19. The gimbal of claim 18, wherein: the rotating shaft includes a through hole extending along a direction approximately perpendicular to a longitudinal direction of the rotating shaft; the screw is inserted in the through hole; and the screw is configured to pull the slider to lock the slider when the rotating body is in the first state and release the slider to unlock the slider when the rotating body is in the second state.

20. The gimbal of claim 9, wherein the screw is threadedly engaged with the slider.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view of a gimbal structure according to an embodiment of the present disclosure.

(2) FIG. 2 is a perspective view showing a connection structure of a center of gravity adjusting device and a yaw-axis vertical bar of a support frame of the gimbal structure in FIG. 1.

(3) FIG. 3 is an exploded perspective view of the center of gravity adjusting device and the yaw-axis vertical bar of the support frame in FIG. 2.

(4) FIG. 4 is a rear view of the center of gravity adjusting device and the yaw-axis vertical bar of the support frame in FIG. 2.

(5) FIG. 5 is a top view of a quick release buckle of the center of gravity adjusting device in FIG. 4.

LIST OF REFERRALS

(6) Gimbal structure 100

(7) Support frame 10

(8) Roll-axis support 12

(9) Yaw-axis vertical bar 14

(10) Clamping arm 141

(11) First groove 1411

(12) Second groove 1412

(13) Yaw-axis horizontal bar 16

(14) Upper surface 161

(15) Lower surface 162

(16) Side surface 163

(17) Rack 164

(18) Boss 165

(19) Recess 166

(20) Slant surface 167

(21) First motor 17

(22) Power supply device 18

(23) Filming device 20

(24) Center of gravity adjusting device 30

(25) Gear adjusting mechanism 32

(26) Gear fixing member 321

(27) Head cover 3211

(28) Side wall 3212

(29) Opening 3213

(30) Stepped hole 3214

(31) Fastener 3215

(32) Gear 322

(33) Gear rotating shaft 323

(34) Adjusting knob 324

(35) Quick release mechanism 34 Quick release buckle 341

(36) Rotating shaft 3411

(37) Rotating body 3412 Lug 3413

(38) Through-hole 3414

(39) Screw 342

(40) Slider 343

(41) Horizontal block 3431

(42) Vertical block 3432

(43) Inclined surface 3433

(44) Threaded hole 3434

(45) Copper gasket 344

(46) Silicone gasket 345

(47) Second motor 36

(48) Handheld frame 40

(49) Horizontal rod 42

(50) Handle 44

(51) Embodiments of the present disclosure will be described in detail with reference to the drawings.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(52) Referring to FIGS. 1 to 3, a gimbal structure 100 according to an embodiment of the present disclosure may comprise a support frame 10 for mounting a filming device 20, a center of gravity adjusting device 30, and a handheld frame 40. The support frame 10 and the handheld frame 40 may be connected to each other through the center of gravity adjusting device 30. The center of gravity of the gimbal structure 100 may be adjusted by the center of gravity adjusting device 30.

(53) In some embodiments, the support frame 10 may comprise a roll-axis support 12, a yaw-axis vertical bar 14, a yaw-axis horizontal bar 16, and a first motor 17 rotatably connecting the roll-axis support 12 and the yaw-axis vertical bar 14. The roll-axis support 12 may be provided at a lower side of the gimbal structure 100. The filming device 20 may be mounted in the roll-axis support 12. A plane of the roll-axis support 12 may be perpendicular to the yaw-axis vertical bar 14 in an initial state. A shooting angle of the filming device 20 in the initial state may be an initial viewing angle. A top end of the yaw-axis vertical bar 14 may be provided with two clamping arms 141, which are connected to the center of gravity adjusting device 30. The first motor 17 may be mounted at a bottom end of the yaw-axis vertical bar 14 and rotatably connected to the roll-axis support 12. A power supply device 18 may be provided on the yaw-axis vertical bar 14. The power supply device 18 may drive a rotating shaft of the first motor 17 to rotate, causing the roll-axis support 12 to rotate around a central axis of the first motor 17. When the roll-axis support 12 rotates, an angle of the roll-axis support 12 may change around the central axis of the first motor 17, such that a shooting angle of the filming device 20 mounted on the roll-axis support 12 may vary correspondingly.

(54) In some embodiments, the clamping arms 141 may be formed on the top end of the yaw-axis vertical bar 14 and extend upward. The two clamping arms 141 may be spaced apart from each other. Each clamping arm 141 has an inner surface facing the other clamping arm 141. Two grooves, i.e., a first groove 1411 and a second groove 1412, may be provided on the inner surface of each of the clamping arms 141. The first groove 1411 and second groove 1412 may be spaced apart from each other. The first groove 1411 may be disposed distal to the yaw-axis vertical bar 14, and the second groove 1412 may be disposed proximal to the yaw-axis vertical bar 14.

(55) The yaw-axis horizontal bar 16 may be connected to the yaw-axis vertical bar 14 of the support frame 10. In some embodiments, the yaw-axis horizontal bar 16 may be fitted with the clamping arms 141 at the top end of the yaw-axis vertical bar 14. The yaw-axis horizontal bar 16 may comprise an upper surface 161, a lower surface 162, and two side surfaces 163. The upper surface 161 may be parallel to the lower surface 162, and the two side surfaces 163 may be respectively connected to edges of the upper surface 161 and lower surface 162. The upper surface 161 may be provided with a toothed rack 164, also referred to as rack 164, which is arranged along an extending direction of the yaw-axis horizontal bar 16. A bottom of the yaw-axis horizontal bar 16 may be provided with a boss 165 having a width larger than a distance between the two side surfaces 163. A recess 166 extending vertically from the upper surface 161 to the lower surface 162 may be provided on each of the two side surfaces 163 of the yaw-axis horizontal bar 16. A bottom surface of each of the recesses 166 may be a slant surface 167. An angle between a slant surface 167 and a corresponding side surface 163 may be an acute angle. In some embodiments, the angle between the slant surface 167 and the corresponding side surface 163 may be 60. The yaw-axis horizontal bar 16 may be received between the two clamping arms 141 of the yaw-axis vertical bar 14. The lower surface 162 of the yaw-axis horizontal bar 16 may be carried on the yaw-axis vertical bar 14. The boss 165 of the yaw-axis horizontal bar 16 may be received in the second grooves 1412 of the two clamping arms 141. Each of the side surfaces 163 faces the first groove 1411 of one of the clamping arms 141. As shown in FIG. 4, a distance between the side surface 163 and a bottom of the corresponding first groove 1411 is designated as D1.

(56) Referring to FIGS. 3 to 4, the center of gravity adjusting device 30 may comprise a gear adjusting mechanism 32 engagingly connected to the yaw-axis horizontal bar 16, a quick release mechanism 34 configured to tighten and loosen the gear adjusting mechanism 32, and a second motor 36 configured to pivotally connect the center of gravity adjusting device 30 to the handheld frame 40.

(57) The gear adjusting mechanism 32 may be engagingly connected to the yaw-axis horizontal bar 16. The gear adjusting mechanism 32 may comprise a gear fixing member 321, a gear 322, a gear rotating shaft 323, and adjusting knobs 324. The gear fixing member 321 may be configured to connect to the gear rotating shaft 323 and to receive the gear 322, and may be secured to top ends of the clamping arms 141 of the yaw-axis vertical bar 14. The gear fixing member 321 may comprise a head cover 3211 and two side walls 3212. The two side walls 3212 may extend downward from opposing sides of the head cover 3211, thus forming an opening 3213 between the two side walls 3212 for receiving the gear 322. Each of the side walls 3212 may be provided with a stepped hole 3214. The two stepped holes 3214 may be disposed coaxially. Two ends of the gear rotating shaft 323 may be inserted in the stepped holes 3214, respectively, and may rotate in the stepped holes 3214. In some embodiments, the gear 322 may be assembled as described below. First, one end of the gear rotating shaft 323 may be inserted into the opening 3213 through the stepped hole 3214 formed on one of the side walls 3212 of the gear adjusting mechanism 32. Then, the gear 322 may be placed in the opening 3213 and the one end of the gear rotating shaft 323 is inserted into the gear 322. Next, the one end of the gear rotating shaft 323 may be further inserted into the stepped hole 3214 formed on the other one of the side walls 3212. Finally, fasteners 3215 may be fitted on the gear rotating shaft 323. The fasteners 3215 may be rotable in the stepped holes 3214 such that the gear rotating shaft 323 may be rotatably connected to the gear fixing member 321. Two ends of the gear rotating shaft 323 may be exposed from outer peripherals of the two side walls 3212. In some embodiments, two adjusting knobs 324 may be provided, which are respectively mounted on the two ends of the gear rotating shaft 323 which are exposed from the outer peripherals of the side walls 3212. The gear rotating shaft 323 may be rotated by rotating the adjusting knobs 324, to rotate the gear 322. Due to an engagement between the rack 164 of the yaw-axis horizontal bar 16 and the gear 322, a rotation of the gear 322 may cause the yaw-axis horizontal bar 16 to move back and forth in an extending direction of the rack 164.

(58) In some embodiments, the quick release mechanism 34 may comprise a quick release buckle 341, a screw 342 connected to the quick release buckle 341, and a slider 343 connected to the screw 342.

(59) Referring to FIG. 5, the quick release buckle 341 may comprise a rotating shaft 3411, a rotating body 3412 and a lug 3413. The rotating body 3412 may be sleeved on an outer peripheral of the rotating shaft 3411. The rotating body 3412 may include a cylinder and be configured to be eccentric with the rotating shaft 3411. That is, a circle center of the rotating shaft 3411 may not coincide with a circle center of the rotating body 3412. The circle center of the rotating shaft 3411 (the top one of the two circle centers shown in FIG. 5) may deviate from the circle center of the rotating body 3412 (the bottom one of the two circle centers shown in FIG. 5) by a distance d, such that the rotating body 3412 may have a maximum radius R1 and a minimum radius R2, where R1>R2. The lug 3413 may extend outward from a side of the rotating body 3412 away from the circle center of the rotating body 3412. In some embodiments, the lug 3413 may be formed in a streamlined shape. An extending direction of the lug 3413 may be approximately perpendicular to a virtual line connecting the circle center of the rotating shaft 3411 and the circle center of the rotating body 3412, i.e., approximately perpendicular to a virtual line on which the maximum radius R1 of the rotating body 3412 lies. The rotating shaft 3411 may be provided with a through-hole 3414 through which the screw 342 may be inserted (as shown in FIG. 4). When the lug 3413 is manipulated, the rotating body 3412 may rotate around the rotating shaft 3411 such that the rotating body 3412 may rotate from the maximum radius (when the virtual line connecting the circle center of the rotating shaft 3411 and the circle center of the rotating body 3412, i.e., the vertical dashed line in FIG. 5, is approximately parallel to a longitudinal axis of the screw 342) to the minimum radius (when the virtual line connecting the circle center of the rotating shaft 3411 and the circle center of the rotating body 3412 is approximately perpendicular to the longitudinal axis of the screw 342).

(60) Referring again to FIGS. 3 and 4, the slider 343 may be approximately in a 7 shape and comprise a horizontal block 3431 and a vertical block 3432 which are approximately perpendicular to each other. The horizontal block 3431 may have a width D3. The width of the horizontal block 3431 may be smaller than the distance between a side surface 163 of the yaw-axis horizontal bar 16 and the bottom of a corresponding first groove 1411, i.e., D3<D1. As such, the slider 343 may be able to move in its width direction for a certain distance. The horizontal block 3431 may have a height D4, which may be less than a height D2 of the first groove 1411, i.e., D4<D2. As such, the slider 343 may be able to move in its height direction for a certain distance. A bottom surface of the vertical block 3432 may be an inclined surface 3433 having the same inclination angle as that of the slant surface 167 of the recess 166 of the yaw-axis horizontal bar 16. The slider 343 may be displaced in the width and height directions via the sliding of the inclined surface 3433 in the recess 166 of the yaw-axis horizontal bar 16. The vertical block 3432 may be provided with a threaded hole 3434 through which the screw 342 of the quick release mechanism 34 may be inserted to connect the slider 343 with the quick release buckle 341. During the assembly of the quick release mechanism 34, the vertical block 3432 of a slider 343 may be attached to the corresponding side surface 163 of the yaw-axis horizontal bar 16, and the horizontal block 3431 may be received in the first groove 1411 of the corresponding clamping arm 141 of the yaw-axis vertical bar 14. Then, the screw 342 of the quick release mechanism 34 may be successively inserted through the quick release buckle 341 and the clamping arm 141, and finally be threadedly engaged with the slider 343 in order to secure the quick release buckle 341 on one side of the clamping arm 141. A number of gaskets may be provided between the quick release buckle 341 and the clamping arm 141 to facilitate the manipulating of the quick release mechanism 34 and to reduce a friction between components. In some embodiments, a copper gasket 344 and a silicone gasket 345 may be successively provided between the quick release buckle 341 and the clamping arm 141. The side of the copper gasket 344 facing the rotating body 3412 of the quick release buckle 341 may include a curved surface.

(61) To change the quick release mechanism 34 to a tightened state, the quick release buckle 341 of the quick release mechanism 34 may be manipulated to be placed at one side of the clamping arm 141 of the yaw-axis vertical bar 14. In this state, a portion of the rotating body 3412 of the quick release buckle 341 that has the maximum radius may abut against the clamping arm 141, such that the slider 343 is driven by the screw 342 of the quick release mechanism 34 to abut against a corresponding clamping arm 141. In some embodiments, the inclined surface 3433 of the slider 343 may slide outward along the slant surface 167 of the recess 166 of the yaw-axis horizontal bar 16 until the vertical block 3432 of the slider 343 abuts against the clamping arm 141 and a top end of the horizontal block 3431 abuts against an upper wall of the first groove 1411 of the clamping arm 141. Under this state, the slider 343 may be locked onto the clamping arm 141 such that the yaw-axis horizontal bar 16 may be fixed with the yaw-axis vertical bar 14.

(62) To change the quick release mechanism 34 to a loosened state, the lug 3413 of the quick release buckle 341 of the quick release mechanism 34 may be manipulated to be approximately perpendicular to the clamping arm 141 of the yaw-axis vertical bar 14. That is, the portion of the rotating body 3412 of the quick release buckle 341 that abuts against the clamping arm 141 may shift gradually from the portion having the maximum radius to a portion having the minimum radius, such that the slider 343 may be driven by the screw 342 of the quick release mechanism 34 to slide inward. In some embodiments, the inclined surface 3433 of the slider 343 may slide inward along the slant surface 167 of the recess 166 of the yaw-axis horizontal bar 16 to loosen the vertical block 3432 of the slider 343 from the slant surface 167 of the recess 166 of the yaw-axis horizontal bar 16 and loosen the horizontal block 3431 from the upper wall of the first groove 1411 of the clamping arm 141. In the loosened state, the horizontal block 3431 of the slider 343 may not abut against the clamping arm 141, and the vertical block 3432 may not abut against the yaw-axis horizontal bar 16, such that the slider 343 may be released from the clamping arm 141 and the yaw-axis horizontal bar 16. In the loosened state, the gear 322 may engage with the rack 164 on the yaw-axis horizontal bar 16 by rotating the adjusting knobs 324 of the gear adjusting mechanism 32. By virtue of the engagement, the yaw-axis horizontal bar 16 may slide in the clamping arms 141, to adjust the center of gravity of the entire gimbal structure 100.

(63) Another end of the center of gravity adjusting device 30 may be connected to the second motor 36 through which and the handheld frame 40 may be rotatably connected to the center of gravity adjusting device 30. In some embodiments, the handheld frame 40 may comprise a horizontal rod 42 and a plurality of handles 44 mounted on the horizontal rod 42. In some embodiments, three handles 44 may be provided, two of which may be provided at two ends of the horizontal rod 42, respectively, and the third handle 44 may be provided at a middle portion of the horizontal rod 42. The horizontal rod 42 may be rotatably connected to the center of gravity adjusting device 30 through the second motor 36.

(64) The gimbal structure 100 according to embodiments of the present disclosure may employ the quick release mechanism 34 to adjust the center of gravity adjusting device 30. In some embodiments, the yaw-axis horizontal bar 16 may be locked to or released from the yaw-axis vertical bar 14 of the support frame 10 by manipulating the lug 3413 of the quick release mechanism 34. For example, when the center of gravity of the gimbal structure 100 needs to be fixed, the lug 3413 of the quick release mechanism 34 may be fastened such that the slider 343 of the quick release mechanism 34 may abut against the clamping arm 141 of the yaw-axis vertical bar 14 and the yaw-axis horizontal bar 16 to prevent a relative moment of the yaw-axis horizontal bar 16 relative to the yaw-axis vertical bar 14. When the center of gravity of the gimbal structure 100 needs to be adjusted, the lug 3413 of the quick release mechanism 34 may be unfastened, such that the slider 343 of the quick release mechanism 34 may slide towards the yaw-axis horizontal bar 16 to release the slider 343 from the clamping arm 141 of the yaw-axis vertical bar 14 and the yaw-axis horizontal bar 16. The yaw-axis horizontal bar 16 may be released from the yaw-axis vertical bar 14 such that they may move relative to each other. The center of gravity adjusting device 30 may be locked and released by aforementioned quick release mechanism 34 without the need for additional tools. Therefore, the center of gravity adjusting device 30 may timely adjust the center of gravity of the gimbal structure 100. Furthermore, the gear adjusting mechanism 32 may be further employed in embodiments of the present disclosure. The yaw-axis horizontal bar 16 may be moved back and forth in the arrangement direction of the rack 164 by an engagement between the gear 322 and the rack 164. A precise adjustment of the center of gravity of the gimbal structure 100 may be achieved without relying on an operator's experience or intuition.

(65) Embodiments of the present disclosure may further provide a gimbal structure, which may comprise a support frame and a gear adjusting mechanism. The support frame may comprise a roll-axis support, a yaw-axis vertical bar, and a yaw-axis horizontal bar carried on the yaw-axis vertical bar. The gear adjusting mechanism may comprise a gear, a gear rotating shaft connecting to the gear, and adjusting knobs arranged at two ends of the gear rotating shaft. An upper surface of the yaw-axis horizontal bar may be provided with a rack with which the gear may engage. The gear may be rotated by rotating the adjusting knobs to move the yaw-axis horizontal bar relative to the yaw-axis vertical bar.

(66) In some embodiments, the gear adjusting mechanism may further comprise a gear fixing member which is fixed at a top end of the yaw-axis vertical bar. The gear fixing member may comprise a head cover and two side walls. An opening may be formed between the two side walls, and the gear may be received in the opening.

(67) Connection of the gear adjusting mechanism with other components of the gimbal structure are described in the aforementioned embodiments and drawings.

(68) It may be appreciated that various modifications and variations may be possible to those having ordinary skill in the art based on the technical concept of the present disclosure, and all these modifications and variations shall fall into the scope of the invention as defined by the appended claims.