CN100592125C - Lens pressing fixture - Google Patents

Abstract

The invention relates to a lens stitching control tool which comprises a stitching piece, a damping piece and a load-bearing piece, wherein, the stitching piece comprises a body and a pressing-on partarranged at the first end of the body; the second end of the body opposite to the first end is formed into mechanical coupling with the load-bearing piece through the damping piece, thereby ensuringthat the distance between the stitching piece and the load-bearing piece is variable. When the pressing-on part of the stitching piece contacts a lens and presses on the lens, the stitching piece moves relative to the load-bearing piece; meanwhile, the impact force on the lens by the stitching piece can be reduced by means of the damping action of the damping piece, thereby preventing the damage on the lens.

Description

Lens pressing fixture

technical field

The invention relates to a lens pressing fixture, in particular to a lens pressing fixture used for assembling optical lens modules.

Background technique

With the development of camera technology, the combination of digital camera modules and various portable electronic devices such as mobile phones, video cameras, personal digital assistants (PDAs), etc., is increasingly favored by many consumers.

The digital camera module in the portable electronic device mainly includes a lens module and a photosensitive module to realize the purpose of image recording. A lens module usually includes a lens barrel and one or more lenses assembled in the lens barrel. At present, assembling the lens into the lens barrel by manual assembly or automatic mechanical assembly requires a precise positioning pressing process, that is, using a pressing jig to press the lens into the lens barrel. Adjacent lenses can be positioned and assembled through spacer rings, and the optical axes of the assembled lenses must be coaxial. The photosensitive module in the digital camera module includes an image sensor, which is usually set opposite to the lens module, and the center point of the image sensor is located on the optical axis of the lens. Relative to its center point, the volume is distributed symmetrically and uniformly to the surroundings, so that better image quality can be obtained.

However, in the lamination process, when the lamination jig touches the lens, it is easy to damage the lens, thereby affecting the performance of the digital camera module.

Contents of the invention

In view of this, it is necessary to provide a lens pressing fixture that can avoid damage to the lens.

A lens pressing jig that can avoid lens damage will be described below with examples.

The lens pressing fixture includes a pressing piece, a buffer piece and a bearing piece. The pressing piece includes a body and abutting portion arranged at a first end of the body. A second end of the main body opposite to the first end is provided with a first receiving portion, and the carrier is provided with a second receiving portion, the first receiving portion cooperates with the second receiving portion to form a cavity, The buffer is arranged in the cavity. The second end of the body forms a mechanical coupling with the carrier through the buffer member so that the distance between the pressing member and the carrier is variable.

Compared with the prior art, the pressing part forms a mechanical coupling with the bearing part through the buffer part and can make the distance between the pressing part and the bearing part variable. When the abutting part of the pressing part touches When the lens exerts pressure on the lens, the press-fitting part moves relative to the bearing part and the buffering effect of the buffer part can reduce the impact force of the press-fitting part on the lens so as to avoid damage to the lens.

Description of drawings

FIG. 1 is an exploded schematic diagram of a lens bonding jig according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of another viewing angle of the lens pressing fixture in FIG. 1 .

Fig. 3 is a schematic diagram of the structure and assembly of the lens pressing jig according to the embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view along IV-IV in Fig. 3 .

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 at the same time, the lens bonding fixture 100 according to the embodiment of the present invention includes a bonding part 110 , a cushioning part 120 and a bearing part 130 .

The pressing component 110 includes a main body 111 , an abutting portion 112 disposed at a first end of the main body 111 , and a first receiving portion 114 disposed at a second end opposite to the abutting portion 112 . The abutting portion 112 has an abutting surface 1121 for contacting the lens to press the lens. The abutting portion 112 can be a detachable structure, that is, the abutting portion 112 can be installed on the main body 111 and can also be detached from the main body 111 . The main body 111 and the abutting portion 112 can also be integrally structured. Usually, the abutting portion 112 is cylindrical, and its diameter matches the diameter of the lens to be pressed, so that the abutting surface 1121 of the abutting portion 112 fully contacts the lens to be pressed so that the force on the lens is even.

The second end of the body 111 of the pressing part 110 forms a mechanical coupling with the carrier part 130 via the buffer part 120 so that the distance between the pressing part 110 and the carrier part 130 is variable.

The carrier 130 includes a carrier 131 and a connecting body 132 .

The carrier 131 includes a first end portion 133 , a second end portion 139 opposite to the first end portion 133 , and a second receiving portion 137 disposed on the first end portion 133 . The side arm of the first end portion 133 has a protrusion 135 , and the protrusion 135 may be a flange or protrusions distributed on the side arm of the first end portion 133 .

The connecting body 132 is a hollow structure. The connecting body 132 includes a first end 138 and a second end 142 opposite to the first end 138. The first end 138 of the connecting body 132 is connected to the pressing part 110 The body 111 is connected, and the second end 142 of the connecting body 132 has a blocking arm 134 that matches the protrusion 135 , that is, the blocking arm 134 can be buckled on the protrusion 135 . The connecting body 132 having a hollow structure is sheathed on the supporting body 131 , and the retaining arm 134 is an annular retaining arm. The inner arm of the first end 138 of the connecting body 132 is provided with a screw thread 136, and the end of the body 111 of the press fitting 110 opposite to the abutting portion 112 is provided with a thread 113, so the thread 136 on the connecting body 132 Engage with the thread 113 on the pressing part 110 to realize the connection between the connecting body 132 and the pressing part 110 .

The first receiving portion 114 cooperates with the second receiving portion 137 to form a cavity, and the buffer member 120 is disposed in the cavity. In this embodiment, the buffer member 120 includes a main body 121 and a telescopic part 122 connected to the main body 121 and movable relative to the main body 121. The moving distance of the telescopic part 122 relative to the main body 121 is the pressing part 110 The moving distance relative to the fixing member 130 . The main body 121 of the buffer component 120 is located on a side adjacent to the second receiving portion 137 and fixedly connected to the carrier 130 , and the telescopic portion 122 is located on a side adjacent to the first receiving portion 114 . The telescoping portion 122 can abut against the body 111 of the press fitting 110 , or can be fixedly connected thereto. In addition, the buffer member 120 can be a pneumatic buffer device or a hydraulic buffer device, or a spring.

Please refer to FIG. 4 , the body 121 of the buffer member 120 is fixedly connected to the bearing member 130 , the telescoping portion 122 is fixedly connected to the body 111 of the pressing member 110 , and the end of the body 111 of the pressing member 110 has screw teeth. The portion is engaged with the threaded end of the connecting body 132 .

When the lens pressing fixture 100 is in the non-pressing state, that is, when the lens pressing fixture 100 does not exert pressure on the lens, the stop arm 134 contacts the protrusion 135 to hold the pressing piece 110, at this time The buffer member 120 can exert a small elastic force on the pressing member 110 so that the blocking arm 134 is closely connected with the protrusion 135 . When the lens pressing jig 100 is in the pressing state, that is, when the lens pressing jig 100 exerts pressure on the lens, the pressing member 110 and the connecting body 132 move relative to the carrier 130 in the direction indicated by the arrow. The distance between the pressing part and the bearing part becomes smaller, and the buffering effect of the buffer part 120 is used to reduce the force exerted by the abutting part 112 on the lens, thereby avoiding damage to the lens. When the lens pressing jig 100 releases the pressing of the lens, the buffer member 120 will return to its original state, that is, the pressing member 110 and the connecting body 132 move relative to the bearing member 130 in the direction opposite to the direction indicated by the arrow. , the blocking arm 134 is closely connected with the protrusion 135 again.

The lens pressing fixture 100 can be used in manual assembly and pressing process or mechanical automatic assembly and pressing process, and the buffer member 120 can also correct the pressure distribution of the pressing member 110 on the lens so as to reduce human factors or mechanical errors. Influence, when the lens pressing fixture 100 is used in the mechanical automatic assembly and pressing process, the carrier 130 is connected with a driving source such as a pneumatic cylinder (not shown), and the driving source can drive the lens pressing fixture 100 Press the lens into the lens barrel.

In addition, those skilled in the art can also make other changes within the spirit of the present invention. Therefore, these changes made according to the spirit of the present invention should be included within the scope of protection claimed by the present invention.

Claims (9)

1. A lens pressing fixture, which includes a pressing piece and a carrier, the pressing piece includes a body and an abutting portion arranged at a first end of the body, characterized in that: the lens pressing fixture A buffer is also included, a first receiving portion is provided at a second end of the main body opposite to the first end, a second receiving portion is provided on the carrier, and the first receiving portion cooperates with the second receiving portion A cavity is formed, the cushioning part is disposed in the cavity, and the second end of the body forms a mechanical coupling with the bearing part through the buffering part so that the distance between the pressing part and the bearing part is variable. 2. The lens pressing fixture according to claim 1, wherein the buffer member includes a buffer body and a telescopic portion connected to the buffer body and movable relative to the buffer body, the buffer body Located on a side adjacent to the second receiving portion and fixedly connected to the carrier, the telescopic portion is located on a side adjacent to the first receiving portion. 3. The lens pressing fixture as claimed in claim 2, wherein the telescopic portion is fixedly connected to the body of the pressing member. 4. The lens pressing fixture as claimed in claim 2, wherein the carrier includes a carrier and a connecting body, the carrier includes a first end and a second end opposite to the first end , the second receiving portion is arranged at the first end of the carrier, the first end of the carrier has a protrusion, the connecting body is a hollow structure, and the connecting body includes a first end and a connection with the first end. The opposite second end, the first end of the connecting body is connected with the body of the pressing piece, the second end of the connecting body has a stop arm that fits with the protrusion, when the lens is pressed together When the tool is in a non-pressed state, the retaining arm contacts the protrusion to hold the pressed part. 5 . The lens pressing fixture as claimed in claim 4 , wherein the body of the pressing member is threadedly engaged with the first end of the connecting body. 6 . 6. The lens pressing fixture as claimed in claim 4, wherein the protrusion is a flange. 7 . The lens pressing fixture according to claim 6 , wherein the connecting body is sleeved on the supporting body, and the blocking arm is an annular blocking arm. 8 . 8 . The lens pressing jig as claimed in claim 1 , wherein the body of the pressing member and the abutting portion are integrated. 9 . 9. The lens pressing fixture as claimed in claim 1, wherein the buffer is an air pressure buffer or a hydraulic buffer.

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