CN200956064Y - lens adjustment device - Google Patents

Abstract

The utility model relates to a lens adjusting device, which comprises a base, a lens seat is arranged in the base, the lens seat is provided with a body and a convex part, wherein the body is connected with a lens and is provided with a butt surface, the convex part can drive the body to rotate, and the body can do longitudinal reciprocating movement along with the rotation so as to drive the lens to move and adjust the focal length; in order to make the body move stably, the lens adjusting device further includes an annular elastic member having two first opposite ends and two second opposite ends, the two first opposite ends and the two second opposite ends are located on different planes and respectively abut against the top surface inside the base and the abutting surface of the body, so as to effectively save space and achieve the purpose of precisely adjusting focal length.

Description

lens adjustment device

technical field

The utility model relates to a lens, and more specifically refers to a lens adjustment device.

Background technique

In response to the increasingly thinner and smaller trend of electronic products, the internal components are all developed in the direction of miniaturization. Taking the camera lens adjustment device of a mobile phone as an example, the existing lens adjustment device is to set a mirror holder inside a base. The base is connected with a lens, and the user drives the lens to telescopically move to achieve the purpose of adjusting the focal length by rotating the mirror base. In addition, a cylindrical coil spring is arranged between the base and the mirror base to stabilize the mirror base. Mobile use, in order to achieve the purpose of precise adjustment of the focal length.

However, when the mirror base moves up and compresses the spring, because the spring is formed by folding metal into a plurality of rings, the axial length and volume before and after compression vary little, that is, the compression ratio is small. , so the spring occupies a considerable space in the lens adjustment device, so it will cause great obstacles to the development of the micro lens; in addition, the micro lens adjustment device must not only meet a certain degree of precision requirements, but also the cooperation of the various components. However, when the aforementioned spring is rotated by the user, the end of the spring close to the mirror base is driven to rotate, causing the spring to be twisted and deformed, resulting in a change in the elastic force of the spring and the inability to apply a uniform force to the mirror base. As a result, the operation of the lens adjustment device is not smooth, and wear and tear occurs, thereby affecting the service life of the lens adjustment device.

In view of this, the author of this case is after careful consideration, and has been engaged in research and development and manufacturing experience in related industries for many years, and finally has the generation of this utility model.

Utility model content

The main purpose of the present invention is to provide a lens adjustment device, which has the advantages of small size, easy processing and low cost.

In order to achieve the above-mentioned purpose, a lens adjustment device provided by the utility model includes a base, which forms a space inside, and the base has a longitudinally penetrating shaft hole and at least one laterally arranged side hole, the shaft hole The space and the outside of the base are communicated with each of the side holes; a mirror base includes a body located in the space and a protrusion protruding from one of the side holes to the outside of the base, the mirror base can be opposite to the The way the base rotates is connected to the inner bottom surface of the base. The convex part can drive the body to rotate, and the body can reciprocate along the axial direction of the shaft hole with the rotation. The body has a The coaxial perforation and a ring are arranged on the abutting surface of the outer ring surface; an elastic member, which is substantially circular, has two first opposite ends and two second opposite ends, and the two first opposite ends The two second opposite ends are located on different planes, and are in contact with the inner top surface of the base and the abutment surface of the body; a lens is fixed to the mirror base through the through hole of the body, and can be attached to the mirror base along with the With the rotation of the mirror base, it reciprocates along the axial direction of the shaft hole.

In order to facilitate understanding of the structural features of the present utility model, preferred embodiments are given and described in conjunction with drawings in the following:

Description of drawings

Fig. 1 is an exploded perspective view of a preferred embodiment of the utility model;

Fig. 2 is the composite diagram of Fig. 1;

Fig. 3 reveals that the mirror holder in Fig. 2 is rotated to extend the lens;

Figure 4 is similar to Figure 2, revealing that the lens is retracted;

Fig. 5 is similar to Fig. 3, revealing that the lens is in an extended state.

[Description of main component symbols]

10 lens adjustment device

10a Space 10b Shaft hole 10c Side hole

12 Base 121 Lower shell 121a Positioning column

121b round hole 121c cylinder 121d bump

121e surface

122 Upper shell 123 Cover plate 123a Circular hole

124 combination board

14 Mirror base 141 Body 141a Large diameter surface

141b small diameter face 141c abutment face

142 convex part 142a lever

143 Perforation 143a Internal thread surface

144 Grooving 144a Bevel

16 Elastic member 161 First opposite end 161a Support surface

162 Second opposite end

18 lenses

181 external thread surface

Detailed ways

Please refer to FIG. 1 to FIG. 3, which is a lens adjustment device 10 of a preferred embodiment of the present invention. The lens adjustment device 10 includes a base 12, a mirror holder 14, an elastic member 16 and a lens 18. The structure of each component and its relative position are described below, among them:

The base 12 has a lower casing 121 and an upper casing 122. In this embodiment, the lower casing 121 is a rectangular body, and a positioning column 121a is protruded upwards at the four corners respectively, and a positioning post 121a is formed in the center, and There is a circular hole 121b and a cylinder 121c arranged around the circular hole 121b, and the predetermined position of the outer wall of the cylinder 121c is divided into three arc-shaped protrusions 121d combined with the surface 121e of the lower casing 121; the upper casing 122 One cover plate 123 and four joint plates 124 are integrally bent, wherein the cover plate 123 has a circular hole 123a, and each joint plate 124 is buckled with the positioning column 121a of the lower case 121, so that the upper case 122 is fastened with the lower housing 121 and together forms a space 10a, the circular holes 123a, 121b of the upper and lower housings 122, 121 communicate with the space 10a to form a vertically penetrating base 12 shaft hole 10b, and two adjacent positioning columns 121a and the cover plate 123 are surrounded by a side hole 10c, and the shaft hole 10b and the side hole 10c communicate with the space 10a and the outside of the base 12;

The mirror base 14 has a cylindrical body 141 and a convex portion 142 protruding from the outer ring surface of the body 141 toward the outside of the side hole 10c, the convex portion 142 is connected to an upwardly extending lever 142a, wherein the body 141 sleeves the cylinder 121c and is located in the space 10a of the base 12, and has a through hole 143 coaxially arranged with the shaft hole 10b. The outer ring surface of the body 141 has a large diameter surface 141a and a small diameter surface 141b, and the connection between the large and small diameter surfaces 141a and 141b forms an abutment surface 141c, and the bottom edge of the body 141 has corresponding projections 121d Slots 144, each of which has an inclined surface 144a, one end of the inclined surface 144a is inclined towards the other end, the main body 141 abuts against the protrusion 121d of the base 12 with its inclined surface 144a, and the driving lever is moved 142a, as shown in Figure 3, the driving lever 142a will drive the main body 141 to rotate, so that each of the protrusions 121d will push the mirror base 14 along the shaft hole 10b by abutting against the positions of different heights of each of the inclined surfaces 144a. Axial reciprocating movement;

The elastic member 16 is a stamped metal sheet, which is circular, and has two first opposite ends 161 and two second opposite ends 162, and each of the first opposite ends 161 forms a support surface 161a, It should be noted that the two first opposite ends 161 and the two second opposite ends 162 are located on different planes. In detail, please refer to FIG. The two second opposite ends 162 are in contact with the abutting surface 141c of the mirror base 14. Through this, the elastic member 16 provides a force to press the mirror base 14, forcing the groove 144 of the mirror base 14 to be inclined. 144a is firmly against the bump 121d;

The lens 18 is a cylindrical body, which has a plurality of optical lenses (not shown) inside to receive and process the incident light. So that the lens 18 can be locked on the mirror base 14 and move synchronously with the mirror base 14 to achieve the purpose of adjusting the focal length. The above is the description of the components and their relative positions of the lens adjusting device 10 of the present embodiment, and then describe its mode of action in the following:

Please refer to FIG. 2 and FIG. 4 , which reveal that the lens 18 is in a retracted state. At this time, the protrusion 121d of the base 12 abuts against the end of the slope 144a that is higher than the surface 121e of the lower housing 121, and the The second opposite end 162 of the elastic member 16 provides an active force to press the mirror holder 14, so that the inclined surface 144a of the slot 144 is firmly against the protrusion 121d, so as to prevent the phenomenon of slipping, so that the positioning of the lens 18 can be ensured. , in order to achieve the purpose of finely adjusting the focal length.

As shown in Fig. 3 and Fig. 5, when the lens 18 is to be elongated, the shift lever 142a can be moved to drive the mirror holder 14, and the slot 144 is driven to be displaced along the shift direction, so that the projection 121d touches the The inclined surface 144a is at the lower end of the surface 121e of the lower casing 121 to push the mirror base 14 away from the surface 121e of the lower casing 121, and simultaneously drive the lens 18 to move, and the elastic member 16 is also on the lens 18 During the moving process, the mirror holder 14 is continuously pressed to ensure that the lens 18 does not shake during the moving process to achieve the effect of precise adjustment; it must be noted that the elastic member 16 of the present invention is a single ring elastic sheet, As can be seen from Fig. 4 and Fig. 5, the space occupied by the elastic member 16 is very small, so it is very beneficial to the miniaturization development of its application products (such as: mobile phone built-in camera). Secondly, based on the elastic member 16 of the present utility model It is a single elastic ring, so it will not be driven to rotate and deform along the direction of rotation when the mirror base 14 rotates, so it can solve the lack of the existing cylindrical coil spring due to the change of elastic force caused by deformation. In other words, the utility model The new elastic member 16 can evenly apply force to the mirror base 14 when the lens 18 is retracted, so that the lens adjustment device 10 can operate smoothly, thereby reducing wear and tear and prolonging the service life of the product. The elastic member 16 of the utility model has the advantages of simple structure, easy processing and low cost.

The above descriptions are only preferred feasible embodiments of the present utility model, and all equivalent structural changes made by applying the specification of the present utility model and the scope of the patent application should be included in the scope of the patent of the present utility model.

Claims (5)

1. A lens adjustment device, characterized in that it comprises: A base, forming a space inside, the base has a longitudinally penetrating shaft hole and at least one laterally arranged side hole, the shaft hole and each of the side holes communicate with the space and the outside of the base; A mirror base, including a body located in the space and a protrusion protruding from the side hole to the outside of the base, the mirror base is connected to the inner bottom surface of the base in a rotatable manner relative to the base, The convex part drives the body to rotate, and the body reciprocates along the axial direction of the shaft hole with the rotation. Interface; An elastic member, substantially in the shape of a ring, has two first opposite ends and two second opposite ends, the two first opposite ends and the two second opposite ends are located on different planes, and respectively interfere with the interior of the base the abutment surface of the top surface and the body; and A lens is fixed to the mirror base through the through hole of the main body, and reciprocates along the axial direction of the shaft hole as the mirror base rotates. 2. The lens adjustment device according to claim 1, wherein the base has an upper shell and a lower shell, which are interlocked and jointly formed to form the space and the side holes, the upper 1. The lower shell has a circular hole respectively, and the two circular holes communicate with the space to jointly form the shaft hole of the base. The inner bottom surface of the base and the inner top surface of the base. 3 . The lens adjustment device according to claim 2 , wherein the mirror base has a lever, and the lever is connected to the convex portion of the mirror base and extends upward. 4 . 4. The lens adjustment device according to claim 3, wherein the lower housing has a cylinder surrounding the circular hole, and a plurality of protrusions are arranged around the connection between the cylinder and the lower housing. block, the body of the mirror base is sleeved on the cylinder, and its bottom edge has a plurality of slots corresponding to the protrusions, each slot has an inclined surface, one end of the inclined surface is inclined towards the other end, each of the inclined surfaces resists each The protruding block and the shifting rod drive the body to rotate, so that each of the inclined surfaces interferes with each of the protruding blocks at different positions thereon. 5 . The lens adjusting device according to claim 1 , wherein the two first opposite ends of the elastic member respectively form a supporting surface, and the supporting surface is aligned with the inner top surface of the base. 6 .

Images