TWI428649B - Clamping fixture - Google Patents

Description

Clamping device

The invention relates to a clamping device, in particular to a clamping device which is relatively stable in clamping.

With the development of camera technology, the lens module has been widely used in various types of camera devices. The combination of the lens module and various portable electronic devices such as mobile phones and computers has been favored by many consumers.

The lens module is an essential component of the camera device, and usually includes a lens (for the design method of the lens, please refer to the paper Aspheric component design published by Chao et al. in IEEE Systems, 2000 IEEE Ultrasonics Symposium), and the lens holder. , filters and spacers for spacer lenses and filters, such as gaskets. In the assembly process of the lens module, components such as lenses, filters, and spacers are usually inserted into the lens holder in a certain order, and then the lens holder is screwed into the lens holder to assemble a complete lens module.

In the process of manufacturing and assembling the lens module, it is usually necessary to use a clamping device to clamp components such as a lens, a lens barrel and a lens holder to facilitate transmission and operation of the components. A prior art clamping device 10, as shown in Figure 1, clamps the component 12 by the jaws 11 against the outer circumferential surface 120 of the component 12 (shown as a lens in Figure 1). However, since the jaws 11 interfere with the element 12, they form only two contact positions 100 with the element 12, so that when the element 12 is clamped by the clamping device 10, the element 12 is easily slipped away, so that The clamping device 10 cannot achieve the purpose of stable clamping.

In view of this, it is necessary to provide a clamping device that is relatively stable in clamping.

In the following, a clamping device will be described with a specific embodiment, which has a high operational stability.

A clamping device for clamping an component having an outer circumferential surface, the clamping device comprising a first clamping arm, a second clamping arm, a first clamping jaw, a second clamping jaw and a clamping device a connecting rod; the first clamping arm is disposed to intersect with the second clamping arm to form an opening, the connecting rod is coupled to the first clamping arm and has an angle with the first clamping arm; the first clamping jaw Mechanically coupled to the first clamping arm, the second clamping jaw is mechanically coupled to the second clamping arm, and the first clamping jaw, the first clamping jaw and the second clamping jaw clamping element The two jaws and the connecting rod form three different contact positions with the outer circumferential surface of the element.

Compared with the prior art, when the component having an outer circumferential surface is clamped by the clamping device, since the first clamping jaw, the second clamping jaw and the connecting rod form three different contact positions with the outer circumferential surface of the component, Therefore, the holding device can significantly improve the operational stability when the components are clamped.

10, 20, 30‧‧‧ clamping device

11‧‧‧Claws

12‧‧‧ components

23, 33‧‧‧ connecting rod

24, 34‧‧ ‧ rivets

25‧‧‧ accommodating space

100, 202‧‧‧Contact location

120, 201‧‧‧ outer circumferential surface

200‧‧‧ lenses

211‧‧‧First clamping arm

212‧‧‧Second gripper arm

213‧‧‧End

214‧‧‧ openings

221‧‧‧First jaw

221a‧‧‧ first base

221b‧‧‧ first contradiction

222‧‧‧second jaw

222a‧‧‧ second base

222b‧‧‧ second contradiction

340‧‧‧ center hole

2210‧‧‧First through hole

2220‧‧‧Second through hole

Figure 1 is a schematic view showing the structure of a conventional holding device for clamping a lens.

2 is a schematic cross-sectional view of a clamping device according to a first embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view showing the lens held by the holding device shown in Fig. 2.

4 is a schematic cross-sectional view showing the first jaw and the second jaw of the clamping device shown in FIG. 2 .

Figure 5 is a cross-sectional view showing a holding device according to a second embodiment of the present invention.

The embodiments of the present invention will be further described in detail below with reference to the drawings.

Referring to FIG. 2 , a clamping device 20 according to a first embodiment of the present invention includes a first clamping arm 211 , a second clamping arm 212 , a first clamping jaw 221 , and a second clamping jaw 222 . And a connecting rod 23.

The first clamping arm 211 is disposed to intersect with the second clamping arm 212 and has one end portion 213 fixed to the same. The first clamping arm 211 and the second clamping arm 212 form an opening 214 away from one side of the end 213. Specifically, in order to facilitate the operator to adjust the size of the opening 214 by pressing the first clamping arm 211 and the second clamping arm 212, the first clamping arm 211 and the second clamping arm 212 may be rigid. Made of tough metal material.

The connecting rod 23 is connected to the first clamping arm 211 and has an angle α with the first clamping arm 211, which can be extended by the first clamping arm 211, that is, the connecting rod 23 and the first clamping arm 211 One piece.

The first jaw 221 is mechanically coupled to the first clamping arm 211. Specifically, the first clamping jaw 221 includes a first base portion 221a and a first abutting portion 221b extending from the first base portion 221a. The first base portion 221a defines a first through hole 2210, and the first through hole 2210 is sleeved on the connecting rod 23, and the first abutting portion 221b can be rotated around the connecting rod 23, thereby The first clamping jaw 221 is pivotally connected to the first clamping arm 211 .

The clamping device 20 further includes a rivet 24 that is mechanically coupled to the second clamping arm 212 by the rivet 24. Specifically, the second jaw 222 includes a The second base portion 222a and a second abutting portion 222b extending from the second base portion 222a. The second base portion 222 a defines a second through hole 2220 , and the second through hole 2220 is sleeved on the rivet 24 . The rivet 24 is connected to the second base portion 222a and the second clamping arm 212, so that the second base portion 222a can drive the first abutting portion 221b to rotate around the rivet 24, so that the second clamping jaw 222 is pivotally connected thereto. Second clamping arm 212.

The first clamping jaw 221 and the second clamping jaw 222 are in an open state when the clamping device 20 is not in use, and the extending directions of the two forming jaws 20 form an angle β, so that the first clamping jaw 221 and the second clamping jaw The 222 and the connecting rod 23 generally form a triangle, and the triangle has a receiving space 25 therein.

Referring to FIG. 3 together, in this embodiment, the component to be clamped is defined as a lens 200 having an outer circumferential surface 201. When the lens 200 is clamped by the clamping device 20, the operator can first utilize The first jaw 221 and the second jaw 222 in the open state are aligned with the lens 200, and the lens 200 is positioned in the accommodating space 25. At this time, the first clamping arm 211 and the second clamping arm 212 can be respectively driven by pressing the first clamping arm 211 and the second clamping arm 212 (the direction indicated by the arrow in FIG. 3). The jaw 221 and the second jaw 222 move toward each other, and the outer circumferential surface 201 of the lens 200 abuts against the connecting rod 23. It can be understood that, since the first clamping jaw 221, the second clamping jaw 222 and the connecting rod 23 respectively interfere with the outer circumferential surface 201 of the lens 200, when the clamping device 20 grips the lens 200, the first clamping jaw 221, The two jaws 222 and the connecting rod 23 and the outer circumferential surface 201 of the lens 200 can form three different contact locations 202. Thus, the holding device 20 having three contact positions 202 can significantly improve the operational stability of the clamping member as compared to the prior art clamping device 10.

After the lens 200 is clamped, the operator can drive the lens 200 for transmission and subsequent operations by the clamping device 20.

The first abutting portion 221b, the second abutting portion 222b and the connecting rod 23 can respectively be a cylinder or a rectangular parallelepiped. It can be understood that when it is a cylinder, it forms three with the outer circumferential surface 201 of the lens 200. The contact location 202 is a point contact; when it is a cuboid, the three contact locations 202 formed with the outer circumferential surface 201 of the lens 200 can be in line contact. Therefore, in order to enhance the frictional action of the first abutting portion 221b, the second abutting portion 222b and the connecting rod 23 on the lens 200, thereby achieving the purpose of improving the operational stability of the clamping device 20 when the lens 200 is clamped, the first conflict The portion 221b, the second abutting portion 222b, and the connecting rod 23 may each be a rectangular parallelepiped. Of course, a rubber layer (not shown) may be respectively formed by the surfaces of the first jaw 221, the second jaw 222, and the connecting rod 23 contacting the component to further enhance the first abutting portion 221b and the second interference. The portion 222b and the connecting rod 23 act on the friction of the lens 200.

Referring to FIG. 4 together, since the first clamping jaw 221 is pivotally connected to the first clamping arm 211 and the second clamping jaw 222 is pivotally connected to the second clamping arm 212, the operator can rotate the first clamping jaw 221 And the second clamping jaw 222, so that the first clamping jaw 221 and the second clamping jaw 222 rotate around the connecting rod 23 and are located at different positions, thereby facilitating clamping of the lens 200 from different angles. Further, when the clamping device 20 is not in use, the first clamping jaw 221 and the second clamping jaw 222 can be stored by rotating the first clamping jaw 221 and the second clamping jaw 222, thereby aligning the first clamping jaw 221 with the first clamping jaw 221 And the second jaw 222 serves as a protection.

When the lens 200 having an outer circumferential surface 201 is clamped by the clamping device 20, since the first jaw 221, the second jaw 222, and the connecting rod 23 form three differentities from the outer circumferential surface 201 of the lens 200, Contact position 202, so the clamping device 20 can significantly improve the operational stability of the lens 200 when it is clamped.

Referring to FIG. 5, the clamping device 30 of the second embodiment of the present invention is substantially the same as the clamping device 20 of the first embodiment of the present invention, except that the rivet 34 has There is a central hole 340, and the connecting rod 33 is sleeved and slidably disposed in the central hole 340, so that the connecting rod 33 can be guided by the central hole 340, thereby further enhancing the operational stability of the clamping device 30.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

20‧‧‧Clamping device

214‧‧‧ openings

23‧‧‧ Connecting rod

221‧‧‧First jaw

24‧‧‧ Rivets

221a‧‧‧ first base

25‧‧‧ accommodating space

221b‧‧‧ first contradiction

202‧‧‧Contact location

222‧‧‧second jaw

201‧‧‧ outer circumferential surface

222a‧‧‧ second base

211‧‧‧First clamping arm

222b‧‧‧ second contradiction

212‧‧‧Second gripper arm

2210‧‧‧First through hole

213‧‧‧End

2220‧‧‧Second through hole

Claims (7)

A clamping device for clamping an component having an outer circumferential surface, the clamping device comprising a first clamping arm, a second clamping arm, a first clamping jaw, a second clamping jaw, and a clamping device a rivet and a connecting rod; the first clamping arm and the second clamping arm are disposed to form an opening, the connecting rod is connected to the first clamping arm and has an angle with the first clamping arm; a clamping jaw is pivotally connected to the first clamping arm, the second clamping jaw is pivotally connected to the second clamping arm, and the second clamping jaw comprises a second base and a second extending from the second base The rivet is connected to the second clamping arm and the second base. The second base is sleeved on the rivet by opening a second through hole and can rotate the second abutting portion around the connecting rod. And when the first clamping jaw and the second clamping jaw clamping element, the first clamping jaw, the second clamping jaw and the connecting rod form three different contact positions with the outer circumferential surface of the component. The clamping device of claim 1, wherein the first jaw, the second jaw, and the surface of the connecting rod contacting the element respectively form a rubber layer. The clamping device of claim 1, wherein the connecting rod extends from one end of the first clamping arm. The clamping device of claim 3, wherein the first jaw comprises a first base and a first abutting portion extending from the first base, the first base being opened by a first A through hole is sleeved on the connecting rod and can drive the first abutting portion to rotate around the connecting rod. The clamping device of claim 1, wherein the rivet has a central hole, and the connecting rod is sleeved and slidably disposed in the central hole. The clamping device of claim 1, wherein the second abutting portion and the connecting rod are respectively a cylinder or a rectangular parallelepiped. The clamping device of claim 4, wherein the first abutting portion is a cylinder Or a cuboid.