Rotary switch

Abstract

Differing from the conventional rotary switches, a rotary switch provided by the present invention is design to perform bidirectional rotation by double shaft, such that this rotary switch has the maximum switching levels of 32. Particularly, two retaining members having a spring accommodating trough are adopted for accommodating the compression springs; therefore, when switching the rotary switch from one switching level to another one switching level, each the retaining member does ensured to fully embed into one of the rotary grooves formed around the disk side edge of the corresponding rotary disks; the reason is that the compression springs suffer to pressing force would not bend during switching the novel rotary switch, such that the functions of the electric product can be switch smoothly and completely.

Claims

1. A rotary switch, comprising: a main covering body, having an internal accommodating trough, and a shaft sleeve being extended out from a top of the main covering body; a hollow external shaft, being disposed in the internal accommodating trough, and a first top end of the hollow external shaft extending out of the main covering body along the shaft sleeve; a first rotary disk, being connected to a first lower end of the hollow external shaft, and a plurality of first rotary grooves being formed around a disk side edge of the first rotary disk; a first retaining member, having a first spring accommodating trough for receiving a first spring; wherein the first retaining member is able to embed into any one of the plurality of first rotary grooves, so as to prop and retain the first rotary disk based on a support of a first acting force provided by the first spring; a first metal spring, having a first disposing portion and a plurality of first electrical contacting portions, wherein the first disposing portion is attached onto a bottom surface of the first rotary disk, and each of the plurality of first electrical contacting portions extending downward from the first disposing portion at a first tilt angle; an inner shaft, being disposed in the hollow external shaft, and a second top end of the inner shaft extending out of the main covering body along the hollow external shaft and the shaft sleeve; a second rotary disk, being connected to a second lower end of the inner shaft, and a plurality of second rotary grooves being formed around a disk side edge of the second rotary disk; a second retaining member, having a second spring accommodating trough for receiving a second spring; wherein the second retaining member is able to embed into any one of the plurality of second rotary grooves, so as to prop and retain the second rotary disk based on a support of a second acting force provided by the second spring; a second metal spring, having a second disposing portion and a plurality of second electrical contacting portions, wherein the second disposing portion is attached onto a top surface of the second rotary disk, and the second electrical contacting portions extending out from the second disposing portion at a second tilt angle; a double-sided printed circuit board (PCB), wherein a plurality of first electrical connecting areas and a plurality of second electrical connecting areas are formed on a top surface and a bottom surface of the double-sided PCB, and a center through hole and an electrical connecting region being further provided on the double-sided PCB, such that the second lower end of the inner shaft couples to the center through hole, so as to position the double-sided PCB between the first rotary disk and the second rotary disk; and a lower cover, being combined with the main covering body for shielding the internal accommodating trough; wherein the main covering body and the lower cover constitute a switch housing, and the switch housing having an exposing aperture for exposing the electrical connecting region, such that an external conductive wire set is connected to the electrical connecting region.

2. The rotary switch of claim 1, wherein a plurality of welding points are formed on the electrical connecting region to be welded to a plurality of welding terminals of the conductive wire set.

3. The rotary switch of claim 1, further comprising a C-shaped fixing ring, being embedded into an embedding groove formed on the first top end of the hollow external shaft.

4. The rotary switch of claim 1, wherein the main covering body further comprises: at least one first rotation stopping block, being disposed on a bottom of the internal accommodating trough; a recess, being formed on one side of the main covering body; at least two fixing members, being disposed on an outer surface of the main covering body, and adjacent to the shaft sleeve opposite to each other; wherein each of the at least two fixing members has one screw nut space and one supporting groove, and the screw nut space being used for receiving a tablet-shaped screw nut; a plurality of first lock members, being formed around a side edge of the main covering body; and a supporting post, being formed on one inner sidewall of the internal accommodating trough.

5. The rotary switch of claim 4, wherein a notch is provided on a top surface of the main covering body and adjacent to the shaft sleeve, and the notch is a one-fourth arc notch.

6. The rotary switch of claim 4, wherein the double-sided PCB further comprises a notch, and the supporting post is embedded in the notch for stabilizing the double-sided PCB in the internal accommodating trough.

7. The rotary switch of claim 4, wherein the lower cover further comprises: at least two supporting members, being inserted into a corresponding supporting groove; at least one second lock member, being interlocked with the plurality of first lock member; at least one second rotation stopping block, being disposed on a top surface of the lower cover; and a protruding member, being formed on the top surface of the lower cover and located around a top surface edge of the lower cover; wherein the exposing aperture is constituted by the protruding member and the recess.

8. The rotary switch of claim 7, wherein the first rotary disk further comprises: a third rotation stopping block, being disposed on a top surface of the first rotary disk; wherein a rotation of the first rotary disk is stopped by a cooperation of the at least one first rotation stopping block and the third rotation stopping block; and a first attaching member, being disposed on a bottom surface of the first rotary disk, and used for connecting to the first disposing portion so as to attach the first metal spring onto the bottom surface of the first rotary disk.

9. The rotary switch of claim 8, wherein the second rotary disk further comprises: a fourth rotation stopping block, being disposed on a top surface of the second rotary disk; wherein a rotation of the second rotary disk is stopped by a cooperation of the second rotation stopping block and the fourth rotation stopping block; and a second attaching member, being disposed on a bottom surface of the second rotary disk, and used for connecting with the second disposing portion so as to attach the second metal spring onto the bottom surface of the second rotary disk.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention as well as a preferred mode of use and advantages thereof will be best understood by referring to the following detailed description of an illustrative embodiment in conjunction with the accompanying drawings, wherein:

(2) FIG. 1 shows an exploded view of a conventional rotary switch;

(3) FIG. 2 shows a stereo view of the conventional rotary switch;

(4) FIG. 3 and FIG. 4 are stereo diagrams of a rotary switch according to the present invention;

(5) FIG. 5 and FIG. 6 are exploded diagrams of a rotary switch according to the present invention;

(6) FIG. 7 shows a stereo diagram of a hollow external shaft, a first rotary disk, a first retaining member, a first metal spring, and a double-sided PCB;

(7) FIG. 8 shows a stereo diagram of an inner shaft, a second rotary disk, a second retaining member, a second metal spring, and the double-sided PCB;

(8) FIG. 9A and FIG. 9B show side views of the hollow external shaft, the first rotary disk, the first retaining member, the first metal spring, the inner shaft, the second rotary disk, the second retaining member, the second metal spring, and the double-sided PCB; and

(9) FIG. 10A and FIG. 10B are stereo diagrams of a main covering body and a lower cover.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

(10) To more clearly describe a rotary switch according to the present invention, embodiments of the present invention will be described in detail with reference to the attached drawings hereinafter.

(11) Please simultaneously refer to FIG. 3, FIG. 4, FIG. 5, and FIG. 6, where stereo diagrams of a rotary switch according to the present invention are shown in FIG. 3 and FIG. 4, and exploded diagrams of the rotary switch are shown in FIG. 5 and FIG. 6. As shown by FIG. 3-FIG. 6, the rotary switch 1 consists of: a main covering body 10, a lower cover 16, a first rotary disk 12, a first retaining member 13, a first metal spring 14, an inner shaft 11a, a second rotary disk 12a, a second retaining member 13a, a second metal spring 14a, and a double-sided printed circuit board (PCB) 15. In which, the main covering body 10 has an internal accommodating trough 101 in the internal thereof, and a shaft sleeve 102 is extended out from the top of the main covering body 10. Moreover, the lower cover 16 is utilized for being combined with the main covering body 10 so as to shield the internal accommodating trough 101. In the present invention, the main covering body 10 and the lower cover 16 constitute to a switch housing having an exposing aperture 103.

(12) Continuously referring to FIGS. 3-6, and please simultaneously refer to FIG. 7, which illustrate a stereo diagram of the hollow external shaft, the first rotary disk, the first retaining member, the first metal spring, and the double-sided PCB. As shown by FIG. 3-FIG. 7, the hollow external shaft 11 is disposed in the internal accommodating trough 101, wherein a first top end 111 of the hollow external shaft 11 is exposed out of the main covering body 10 along the shaft sleeve 102, and a first lower end 112 of the hollow external shaft 11 is connected to the first rotary disk 12. Moreover, the first rotary disk 12 includes: a plurality of first rotary grooves 121 formed around a disk side edge of the first rotary disk 12, a third rotation stopping block 122 disposed on a top surface of the first rotary disk 12, and a first attaching member 123 disposed on a bottom surface of the first rotary disk 12.

(13) In the present invention, the first retaining member 13, having a first spring accommodating trough 131 for receiving a first spring S1, is utilized for embedding into any one of the plurality of first rotary grooves 121, so as to prop and retain the first rotary disk 12 based on the support of a first acting force provided by the first spring S1. Besides, the first metal spring 14 has a first disposing portion 141 and a plurality of first electrical contacting portions 142, wherein the first disposing portion 141 is attached onto a bottom surface of the first rotary disk 12, and the first electrical contacting portions 142 downward extend out from the first disposing portion 141 at a first tilt angle.

(14) Continuously referring to FIGS. 3-6, and please simultaneously refer to FIG. 8, which illustrate a stereo diagram of the inner shaft, the second rotary disk, the second retaining member, the second metal spring, and the double-sided PCB. As shown by FIGS. 3-6 and FIG. 8, the inner shaft 11a is disposed in the hollow external shaft 11, wherein a second top end 111a of the inner shaft 11a is exposed out of the main covering body 10 along the hollow external shaft 11 and the shaft sleeve 102, and a second lower end 112a of the inner shaft 11a is connected to the second rotary disk 12a. Moreover, the second rotary disk 12a includes: a plurality of second rotary grooves 121a formed around a disk side edge of the second rotary disk 12a, a fourth rotation stopping block 122a disposed on a bottom surface of the second rotary disk 12a, and a second attaching member 123a disposed on a top surface of the second rotary disk 12a.

(15) In the present invention, the second retaining member 13a, having a second spring accommodating trough 131a for receiving a second spring S2, is utilized for embedding into any one of the second rotary grooves 121a, so as to prop and retain the second rotary disk 12a based on the support of a second acting force provided by the second spring S2. Besides, the second metal spring 14a has a second disposing portion 141a and a plurality of second electrical contacting portions 142a, wherein the second disposing portion 141a is attached onto the top surface of the second rotary disk 12a, and the second electrical contacting portions 142a upward extend out from the second disposing portion 141a by a second tilt angle.

(16) Continuously referring to FIG. 3-FIG. 8, and please simultaneously refer to FIG. 9A and FIG. 9B, there are shown the side views of the hollow external shaft, the first rotary disk, the first retaining member, the first metal spring, the inner shaft, the second rotary disk, the second retaining member, the second metal spring, and the double-sided PCB. As the related drawings show, a plurality of first electrical connecting areas 151 and a plurality of second electrical connecting areas are formed on the top surface and the bottom surface of the double-sided PCB 15; moreover, a center through hole 153 and an electrical connecting region 154 are further provided on the double-sided PCB 15, such that the center through hole 153 sleeves the second lower end 112a of the inner shaft 11a for making the double-sided PCB 15 between the first rotary disk 12 and the second rotary disk 12a. Therefore, the first electrical connecting portions 142 of the first metal spring 14 are able to contact with the first electrical connecting areas 151, and the second electrical connecting portions 142a of the second metal spring 14a are able to contact with the second electrical connecting areas 152. In addition, the electrical connecting region 154 is exposed out of the switch housing via the exposing aperture 103, such that a plurality of welding points 1541 formed on the electrical connecting region 154 can be welded with a plurality of welding terminals 21 of an external conductive wire set 2.

(17) Please further simultaneously refer to the stereo diagrams of the main covering body and the lower cover shown by FIG. 10A and FIG. 10B. In the present invention, the main covering body 10 is designed to include some particular elements of: two first rotation stopping blocks 104 disposed on the bottom of the internal accommodating trough 101, a recess 105 formed on one side of the main covering body 10, two fixing members 106, a plurality of first lock members 107 formed around the side edge of the main covering body 10, and a supporting post 109 formed on one inner sidewall of the internal accommodating trough 101. In which, the first rotation stopping block 104 is used for interworking with the third rotation stopping block 122 disposed on the top surface of the first rotary disk 12, so as to stop the rotation of the first rotary disk 12. On the other hand, the fixing members 106 are disposed on an outer surface of the main covering body 10 and adjacent to the shaft sleeve 102 opposite to each other; wherein each the fixing members 106 has one screw nut space 1061 and one supporting groove 108, and the screw nut space 1061 is used for receiving a tablet-shaped screw nut 3. Therefore, by the interwork of the two tablet-shaped screw nuts 3 in the fixing members 106 and two screw bolts, the rotary switch can be applied in any one electric product.

(18) Opposite to the main covering body 10, the lower cover is designed to include some particular elements of: two supporting members 161 for being respectively inserted to the supporting grooves 108, two second lock members 162 for interlocking with the plurality of first lock member 107, two second rotation stopping blocks 163 disposed on a top surface of the lower cover 16, and a protruding member 164 formed on the top surface of the lower cover 16. In which, the second rotation stopping block 163 is utilized for interworking with the second rotation stopping block 122a disposed on the top surface of the second rotary disk 12a, so as to stop the rotation of the second rotary disk 12a. Besides, the protruding member 164 formed on a top surface of the lower cover 16 is located around a top surface edge of the lower cover 16; as the FIG. 3 and FIG. 5 show, the exposing aperture 103 is constituted by the protruding member 164 and the recess 105.

(19) As shown in FIG. 3, the present invention particularly designs a fool-proofing notch 100 on the top surface of the main covering body 10 and adjacent to the shaft sleeve 102, wherein the said fool-proofing notch 100 is a one-fourth arc notch. Moreover, opposite to the main covering body 10, the double-sided PCB 15 is further provided with a notch 155, such that the supporting post 109 can be embedded into the notch 155 for making the double-sided PCB 15 be disposed in the internal accommodating trough 101 steadily.

(20) Furthermore, as shown in FIG. 4 and FIG. 5, an embedding groove 113 is formed on the first top end 111 of the hollow external shaft 11; therefore, a C-shaped fixing ring 17 can be embedded into the embedding groove 113, and then the C-shaped fixing ring 17 can be utilized for combining with a switching cap by way of accommodating the second top end 111a of the inner shaft 11a and the first top end 111 of the hollow external shaft 11.

(21) Therefore, through above descriptions, the rotary switch 1 proposed by the present invention has been introduced completely and clearly; in summary, the present invention includes the advantages of: (1) Differing from the conventional rotary switch shown by FIG. 1 and FIG. 2, the rotary switch 1 provided by the present invention is design to perform bidirectional rotation by double shaft, such that this rotary switch 1 has the maximum switching levels of 32 and can be applied in any one electric product or equipment. (2) Moreover, the present invention particularly design two retaining members (13, 13a) having a spring accommodating trough (131, 131a) are adopted for accommodating the corresponding compression springs (S1, S2); therefore, when switching the rotary switch 1 from one switching level to another one switching level, each the retaining member (13, 13a) does ensured to fully embed into one of the rotary grooves formed around the disk side edge of the corresponding rotary disks (12, 12a); the reason is that the compression springs (S1, S2) suffer to pressing force would not bend during switching the rotary switch 1. Therefore, since both the un-bent compression springs (S1, S2) provide uniform acting force to the retaining members (13, 13a), the first electrical connecting portions 142 of the first metal spring 14 are able to precisely contact with the first electrical connecting areas 151 and the second electrical connecting portions 142a of the second metal spring 14a are able to precisely contact with the second electrical connecting areas 152, such that the functions of the electric product can be switch smoothly and completely.

(22) The above description is made on embodiments of the present invention. However, the embodiments are not intended to limit scope of the present invention, and all equivalent implementations or alterations within the spirit of the present invention still fall within the scope of the present invention.