CN210839744U

CN210839744U - Focusing mechanism and camera module

Info

Publication number: CN210839744U
Application number: CN201921765389.3U
Authority: CN
Inventors: 张汝鹏; 赵耀; 叶金华
Original assignee: Shenzhen Xingzhida Technology Co ltd
Current assignee: Shenzhen Xingzhida Technology Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-06-23
Anticipated expiration: 2029-10-18

Abstract

The utility model provides a focusing mechanism and a camera module, wherein the focusing mechanism comprises a driven part which is used for being fixedly connected with a lens; the driving piece is used for driving the driven piece to rotate around the axis of the lens, and the driving piece is provided with a sliding cavity for the driven piece to move in the axial direction of the lens; the axial limiting shell is sleeved on the driving piece and used for limiting the driving piece to move in the axial direction of the lens; and the rotation limiting part is arranged between the axial limiting shell and the driving part and used for limiting the rotation range of the driving part. The utility model provides a when focusing mechanism and camera module focusing operation, rotate the rotation range of locating part restriction driving piece to just also effectively limited the rotation range of follower and camera lens, and then just also limited the axial motion scope of camera lens, the problem that rotatory too big or undersize made the camera lens drop or compress tightly appears easily when having solved focusing.

Description

Focusing mechanism and camera module

Technical Field

The utility model belongs to the technical field of make a video recording, more specifically say, relate to a focusing mechanism and module of making a video recording.

Background

In order to improve the imaging quality of the camera module, the lens of the camera module needs to be focused. When manual focusing is carried out, a focusing ring fixedly connected with a lens is generally arranged, the lens is driven to rotate by rotating the focusing ring, and the lens is connected with a lens base in a threaded manner, so that the lens can move along the axial direction of the lens when the lens is rotated, and focusing is realized. However, the existing focusing ring is fixedly connected with the lens, and the axial movement and the rotation are carried out simultaneously during focusing, so that the axial movement range of the lens cannot be limited, and the problem that the lens falls off or is pressed due to too large or too small rotation is easy to occur.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a focusing mechanism to can't restrict the problem of the axial motion scope of camera lens when focusing among the solution prior art.

In order to achieve the above object, the utility model provides a technical scheme provides a focusing mechanism, include:

the driven part is used for being fixedly connected with the lens;

the driving piece is used for driving the driven piece to rotate around the axis of the lens, and the driving piece is provided with a sliding cavity for the driven piece to move in the axial direction of the lens;

the axial limiting shell is sleeved on the driving piece and used for limiting the driving piece to move in the axial direction of the lens; and

and the rotation limiting part is arranged between the axial limiting shell and the driving part and used for limiting the rotation range of the driving part.

Furthermore, the driving piece is provided with a hinge hole and a sliding groove which extend along the axial direction of the lens, and the axial limiting shell is provided with a spiral groove; the rotation limiting part comprises a hinge rod arranged in the hinge hole, a transition rod connected with the hinge rod and a sliding rod connected with the transition rod; the sliding rod is provided with a first end which is arranged in the sliding groove in a sliding mode and a second end which is opposite to the first end, and the second end is arranged in the spiral groove in a sliding mode.

Further, the driven element is arranged around the periphery of the lens, and the driving element is arranged around the periphery of the driven element; the driven part is provided with a convex block protruding to the driving part, and the driving part is provided with a groove for accommodating the convex block and allowing the convex block to slide.

Further, the driven piece is fixedly connected with the lens through a fastening screw.

Furthermore, the axial limiting shell is provided with a first axial limiting part and a second axial limiting part which respectively abut against two ends of the driving part.

Furthermore, the first axial limiting part and the second axial limiting part are both abutted against the driving part through limiting balls.

Furthermore, the driving part comprises a gland abutting against the first axial limiting part and a rotating wheel arranged between the gland and the second axial limiting part; the rotating wheel is provided with at least one limiting hole, and the gland is provided with a fixing column extending into the limiting hole.

Furthermore, the first axial locating part comprises a limiting wall abutting against the driving part and a side wall surrounding the driving part, and the side wall is provided with an empty avoiding groove for the rotating wheel to extend out.

Further, a transition cavity for accommodating the transition rod is formed between the gland and the rotating wheel.

The utility model provides a camera shooting module, including lens mount, threaded connection in camera lens on the lens mount and as above arbitrary focusing mechanism.

Compared with the prior art, when the focusing mechanism and the camera module provided by the utility model are used for focusing, because the driven part is fixedly connected with the lens, when the driving part drives the driven part to rotate around the axis of the lens, the lens can be driven to rotate around the axis of the lens to realize focusing; the driving piece can only rotate by arranging the axial limiting shell sleeved on the driving piece, the driving piece cannot move upwards in the axial direction of the lens, the rotating limiting piece is arranged between the axial limiting shell and the driving piece, the rotating range of the driving piece is limited by the rotating limiting piece, the rotating range of the driven piece and the lens is effectively limited, the axial movement range of the lens is limited, and the problem that the lens is easy to fall off or compress due to too large or too small rotation during focusing is solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a focusing mechanism provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of a rotation limiting member according to an embodiment of the present invention;

fig. 3 is a schematic layout view of a rotation limiting part according to an embodiment of the present invention.

Wherein, in the figures, the respective reference numerals:

100. a focusing mechanism; 11. a driven member; 111. a bump; 12. a drive member; 121. a hinge hole; 122. a sliding groove; 123. a groove; 124. a gland; 1241. fixing a column; 125. a rotating wheel; 126. a transition chamber; 1251. a limiting hole; 13. an axial limiting shell; 130. a helical groove; 131. a first axial limiting member; 1311. a limiting wall; 1312. a side wall; 1313. an empty avoiding groove; 132. a second axial limiting member; 14. rotating the limiting piece; 141. a hinged lever; 142. a transition rod; 143. a slide bar; a limiting ball 15; 200. a lens; 300. a lens mount.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 and fig. 2, a focusing mechanism 100 according to a preferred embodiment of the present invention is shown; the focusing mechanism 100 comprises a driven member 11, a driving member 12, an axial limiting shell 13 and a rotation limiting member 14, wherein the driven member 11 is used for being fixedly connected with the lens 200, the driving member 12 is used for driving the driven member 11 to rotate around the axis of the lens 200 and is provided with a sliding cavity for the driven member 11 to move in the axial direction of the lens 200; the axial limiting shell 13 is sleeved on the driving element 12 and used for limiting the driving element 12 to move in the axial direction of the lens 200; the rotation limiting member 14 is disposed between the axial limiting housing 13 and the driving member 12, and is used for limiting the rotation range of the driving member 12.

When the focusing mechanism 100 is applied to focusing operation of a lens 200 in a camera module, because the driven member 11 is fixedly connected with the lens 200, when the driving member 12 drives the driven member 11 to rotate around the axis of the lens 200, the lens 200 can be driven to rotate around the axis at the same time, and the camera module is provided with the lens holder 300 in which the lens 200 is in threaded connection with the lens 200, the lens 200 can move along the axial direction when rotating, and the driven member 11 is driven to move along the axial direction, and the driving member 12 is provided with a sliding cavity for the driven member 11 to move along the axial direction of the lens 200, so that the axial movement space of the driven member 11 and the lens 200 can be effectively ensured, and the focusing operation can be realized; moreover, the driving part 12 can only rotate by arranging the axial limiting shell 13 sleeved on the driving part 12, and the driving part can not move along the axial direction of the lens 200, through the rotation limiting part 14 arranged between the axial limiting shell 13 and the driving part 12, the rotation limiting part 14 limits the rotation range of the driving part 12, so that the rotation ranges of the driving part 11 and the lens 200 are also effectively limited, further, the axial movement range of the lens 200 is also limited, and the problem that the lens 200 falls off or is compressed due to too large or too small rotation easily occurs during focusing is solved. The utility model provides a focusing mechanism 100 can be effectively used for the focusing operation of the camera lens 200 of the module of making a video recording, and the axial motion scope of operation swiftly simple and can effectively restrict camera lens 200 avoids appearing the problem that camera lens 200 drops or compresses tightly.

Specifically, referring to fig. 2 and fig. 3, the driving element 12 is provided with a hinge hole 121 and a sliding groove 122 extending along the axial direction of the lens 200, the axial limiting housing 13 is provided with a spiral groove 130, and the rotation limiting element 14 includes a hinge rod 141 disposed in the hinge hole 121, a transition rod 142 connected to the hinge rod 141, and a sliding rod 143 connected to the transition rod 142; the sliding rod 143 has a first end slidably disposed in the sliding groove 122 and a second end opposite to the first end, the second end being slidably disposed in the spiral groove 130. Thus, when the driving member 12 is rotated, the driving member 12 can drive the rotation limiting member 14 to rotate around the axis of the lens 200; since the second end of the sliding rod 143 of the rotation limiting member 14 is slidably disposed in the spiral groove 130 of the axial limiting housing 13, that is, the rotation of the rotation limiting member 14 around the axis of the lens 200 is limited by the spiral groove 130, as the second end slides in the spiral groove 130, the rotation limiting member 14 simultaneously rotates around the axis of the hinge rod 141, and since the first end of the sliding rod 143 is slidably disposed in the sliding groove 122, that is, the sliding of the sliding rod 143 is limited by the sliding groove 122; thereby when driving piece 12 drives rotation limiting part 14 and rotates, locate the rotation range of rotation limiting part 14 between driving piece 12 and the spacing casing 13 of axial and received the restriction, stop rotating when rotation limiting part 14 reaches the extreme point of rotation range just also makes driving piece 12 stall simultaneously to effectively play the effect of limiting the rotation range of driving piece 12, can effectively solve appear rotating too big or undersize easily when focusing and make camera lens 200 drop or compress tightly the problem. Moreover, the rotation limiting part 14 arranged in this way is simple in structure and convenient to install, and the rotation limiting part 14 is limited by matching the thread groove on the axial limiting shell 13 and the sliding groove 122 on the driving part 12, so that the rotation range of the driving part 12 can be effectively ensured, multi-turn rotation is realized, and the focusing effect is ensured.

Specifically, referring to fig. 1, the driven element 11 is disposed around the outer periphery of the lens 200, and the driving element 12 is disposed around the outer periphery of the driven element 11; the driven member 11 is provided with a projection 111 projecting toward the driving member 12, and the driving member 12 is provided with a groove 123 accommodating the projection and allowing the projection to slide. More specifically, the follower 11 is fixedly connected to the lens 200 by a fastening screw. Through the cooperation of lug 111 and recess 123, just can promote the lug 111 of follower 11 and then make follower 11 rotate as driving piece 12 rotates, moreover, when follower 11 and camera lens 200 synchronous rotation and take place axial motion, lug 111 can slide in recess 123 simultaneously, has guaranteed the axial motion space of follower 11 and camera lens 200.

Specifically, referring to fig. 1 to fig. 3, the axial limiting housing 13 is provided with a first axial limiting member 131 and a second axial limiting member 132 respectively abutting against two ends of the driving member 12. Thus, the two ends of the driving member 12 are respectively abutted by the first axial limiting member 131 and the second axial limiting member 132, so that the movement thereof in the axial direction of the lens 200 is limited. More specifically, in the present embodiment, the first axial limiting member 131 is located on the light incident side of the lens 200, the second axial limiting member 132 is located on the other side of the lens 200, and the spiral groove 130 is disposed on the second axial limiting member 132. Specifically, the first axial limiting member 131 may be, but not limited to, fixedly connected to the second axial limiting member 132 by bonding or bolting, so as to form a limiting space for the driving member 12, and the axial limiting housing 13 may be, but not limited to, fixedly connected to the lens 200 seat of the camera module, so as to ensure that the axial limiting housing 13 keeps fixed in position in the axial direction.

Specifically, the first axial limiting member 131 and the second axial limiting member 132 both abut against the driving member 12 through the limiting ball 15, so that friction generated by a large amount of surface contact between the driving member 12 and the axial limiting housing 13 is avoided, and rotation of the driving member 12 is facilitated. As a further improvement, the first axial limiting member 131 and the second axial limiting member 132 are both provided with a limiting groove matched with the limiting ball 15, and the limiting ball 15 is placed in the limiting groove, so that the relative fixation of the positions can be ensured. More specifically, the limiting ball 15 has certain elasticity, and may be made of a rubber material, for example; more specifically, the limiting ball 15 is disposed between the driving member 12 and the axial limiting shell 13 in an interference fit manner, so that the axial limiting effect of the axial limiting shell 13 on the driving member 12 can be ensured.

Specifically, the driving member 12 includes a pressing cover 124 abutting against the first axial limiting member 131, and a rotating wheel 125 disposed between the pressing cover 124 and the second axial limiting member 132; the rotating wheel 125 is provided with at least one limiting hole 1251, and the gland 124 is provided with a fixing column 1241 extending into the limiting hole 1251. Thus, the relative positions of the pressing cover 124 and the rotating wheel 125 can be kept fixed by the cooperation of the limiting hole 1251 and the fixing post 1241. More specifically, a transition cavity 126 for accommodating the transition rod 142 is formed between the pressing cover 124 and the rotating wheel 125, so that the movement of the transition rod 142 and the fixing of the position of the rotation limiting member 14 can be ensured, and the structure facilitates the installation of the rotation limiting member 14.

Specifically, the first axial limiting member 131 includes a limiting wall 1311 abutting against the driving member 12 and a side wall 1312 surrounding the driving member 12, and the side wall 1312 is provided with a clearance groove 1313 for the rotation wheel 125 to extend out, so as to facilitate the rotation of the rotation wheel 125.

Further, a camera module is provided, which comprises a lens 200 base, a lens 200 screwed on the lens 200 base, and the focusing mechanism 100 as described above; the focusing mechanism 100 is sleeved on the lens 200, so that the driving piece 12 of the focusing mechanism 100 is rotated to drive the driven piece 11 and the lens 200 to rotate to realize focusing operation; and the spacing casing 13 of axial has guaranteed that driving piece 12 does not take place axial motion when focusing to locate the rotation locating part 14 between the spacing casing 13 of axial and the driving piece 12 and can effectively restrict the rotation scope of camera lens 200 and then restrict the axial motion scope of camera lens 200 through the rotation scope that limits driving piece 12, make the utility model provides a module focusing operation of making a video recording is swift convenient, and the problem that camera lens 200 can not take place to drop or compress tightly when can guaranteeing the focusing operation.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A focusing mechanism, comprising:

the driven part is used for being fixedly connected with the lens;

2. The focusing mechanism of claim 1, wherein the driving member has a hinge hole and a sliding groove extending in an axial direction of the lens, and the axial limiting housing has a spiral groove; the rotation limiting part comprises a hinge rod arranged in the hinge hole, a transition rod connected with the hinge rod and a sliding rod connected with the transition rod; the sliding rod is provided with a first end which is arranged in the sliding groove in a sliding mode and a second end which is opposite to the first end, and the second end is arranged in the spiral groove in a sliding mode.

3. The focusing mechanism according to claim 2, wherein the driven member is provided around an outer peripheral side of the lens, and the driving member is provided around an outer peripheral side of the driven member; the driven part is provided with a convex block protruding to the driving part, and the driving part is provided with a groove for accommodating the convex block and allowing the convex block to slide.

4. The focusing mechanism of claim 2, wherein the follower is fixedly connected to the lens by a fastening screw.

5. The focusing mechanism of claim 2, wherein the axial limiting housing has a first axial limiting member and a second axial limiting member abutting against two ends of the driving member, respectively.

6. The focusing mechanism of claim 5, wherein the first axial limiting member and the second axial limiting member are both abutted against the driving member through a limiting ball.

7. The focusing mechanism of claim 5, wherein the driving member comprises a pressing cover abutting against the first axial limiting member and a rotating wheel disposed between the pressing cover and the second axial limiting member; the rotating wheel is provided with at least one limiting hole, and the gland is provided with a fixing column extending into the limiting hole.

8. The focusing mechanism of claim 7, wherein the first axial position-limiting member comprises a position-limiting wall abutting against the driving member and a side wall surrounding the driving member, and the side wall is provided with a clearance groove for the rotation wheel to extend out.

9. The focusing mechanism of claim 7 wherein a transition cavity is formed between the gland and the rotator wheel to receive the transition rod.

10. A camera module comprising a lens mount, a lens threadedly connected to the lens mount, and a focusing mechanism according to any one of claims 1 to 9.