Lens group fixing device

Abstract

The embodiment of the utility model discloses a lens group fixing device, which comprises a base provided with a containing groove, the containing groove is through front and back, a first abutting rod is arranged on the groove wall of one side of the containing groove, a connecting through hole is formed in the other side of the containing groove, and the fixing device is further provided with a second abutting rod and a locking piece. One end of the second abutting rod extends into the containing groove from the connecting through hole, the locking piece is located in the containing groove, the second abutting rod is provided with an external thread, the locking piece is provided with a threaded hole, and the locking piece is spirally connected with the second abutting rod through the threaded hole. The adjacent ends of the first abutting rod and the second abutting rod abut against the lens set, the locking piece abuts against the groove wall of the containing groove, the second abutting rod is limited and fixed, the lens set is clamped and fixed between the first abutting rod and the second abutting rod, the stability of the lens set in the machining process is improved, collision and damage are reduced, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fixture equipment, in particular to a lens group fixing device. Background Art

[0002] In the production of camera modules, the optical lens group is assembled with other parts. After the assembly process, the barrel of the lens group is coated with glue to achieve connection with other parts. In the subsequent imaging performance analysis of the camera module, if there is a problem with the quality of the lens group, the lens group needs to be removed from the module for a separate optical MTF (modulation transfer function) test. The MTF test has high requirements for the placement accuracy of the lens group. If there is a lot of glue left, the lens group cannot be placed in the test fixture for MTF testing, so the glue on the lens group needs to be removed. The common method for removing the glue from the lens group is to manually use a knife and remove it with the help of a microscope. Due to the small size of the lens assembly, it is difficult to control it stably when removing the glue manually, which affects the accuracy of the operation. If you are not experienced enough, it is very likely to touch and damage the optical part of the lens group during the removal process, or even directly damage the lens group. Utility Model Content

[0003] In view of this, an object of the present invention is to provide a lens group fixing device, which can stably clamp the lens group and effectively reduce the bumps and damages caused by human contact and operational errors.

[0004] The present invention provides a lens group fixing device, which includes:

[0005] The base is provided with a receiving groove which passes through from front to back, a first abutting rod is provided on one side of the groove wall of the receiving groove, and a connecting through hole is provided on the other side;

[0006] A second abutment rod is provided with an external thread, and one end of the second abutment rod extends from the connecting through hole into the containing groove;

[0007] A locking member is located in the accommodating groove, the locking member is provided with a threaded hole, and the locking member is spirally connected to the second abutting rod through the threaded hole;

[0008] When the fixing device fixes the lens group, the adjacent ends of the first abutting rod and the second abutting rod abut against the lens group respectively, and the locking member abuts against the groove wall of the accommodating groove.

[0009] Further, the first abutment rod is arranged perpendicular to the groove wall of the accommodating groove, and the central axis of the first abutment rod and the central axis of the connecting through hole are located on the same straight line, and the second abutment rod is arranged opposite to the first abutment rod.

[0010] Furthermore, the first abutting rod and the base are integrally formed.

[0011] Further, the diameter of the connecting through hole matches the size of the second abutting rod.

[0012] Further, the size of the first abutting rod is the same as the size of the second abutting rod.

[0013] Furthermore, the locking piece is one of an oval shape, a plum blossom shape, a square shape and a hexagonal shape.

[0014] Furthermore, the fixing device also includes two buffer members, and the two buffer members are respectively connected to the ends of the first abutting rod and the second abutting rod located in the accommodating groove.

[0015] Furthermore, the buffer is provided with a groove, and the two buffers are respectively sleeve-connected with the first abutting rod and the second abutting rod through the groove, and the buffer is a square, circular, triangular or polygonal structure.

[0016] Furthermore, the buffer component is one of a rubber component, a sponge pad, a silicone component and a foam component.

[0017] Furthermore, a holding piece is provided at one end of the second abutting rod away from the accommodating groove, the size of the holding piece is larger than the size of the second abutting rod, and the holding piece is a square, circular, triangular or polygonal structure.

[0018] The utility model embodiment provides a lens group fixing device, which includes a base provided with a accommodating groove, the accommodating groove is connected front to back, and a first abutting rod is provided on a groove wall of one side of the accommodating groove, and a connecting through hole is provided on the other side. The fixing device is also provided with a second abutting rod and a locking piece, one end of the second abutting rod extends into the accommodating groove from the connecting through hole, the locking piece is located in the accommodating groove, and an external thread is provided on the second abutting rod, and the locking piece is provided with a threaded hole, and the locking piece is spirally connected to the second abutting rod through the threaded hole. When the fixing device fixes the lens group, the adjacent ends of the first abutting rod and the second abutting rod respectively abut against the lens group, and the locking piece abuts against the groove wall of the accommodating groove to limit and fix the second abutting rod, so that the lens group is clamped and fixed between the first abutting rod and the second abutting rod, thereby improving the stability of the lens group during processing, reducing bumps and damages, and improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other purposes, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0020] Figure 1 It is a schematic diagram of the overall structure of the fixing device of an embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the base of an embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of the second abutment rod of an embodiment of the utility model;

[0023] Figure 4 It is a structural schematic diagram of a locking member in an embodiment of the utility model;

[0024] Figure 5 It is a schematic structural diagram of a buffer member according to an embodiment of the utility model.

[0025] Description of reference numerals:

[0026] 10 - base; 11 - accommodating groove; 12 - first abutting rod; 13 - connecting through hole; 20 - second abutting rod; 21 - holding member; 22 - external thread; 30 - locking member; 31 - threaded hole; 40 - buffer member; 41 - groove. DETAILED DESCRIPTION

[0027] The present application is described below based on embodiments, but the present application is not limited to these embodiments. In the detailed description of the present application below, some specific details are described in detail. It is possible for those skilled in the art to fully understand the present application without the description of these details. In order to avoid confusing the essence of the present application, known methods, processes, flows, components and circuits are not described in detail.

[0028] In addition, persons of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0029] Unless otherwise clearly defined and specified, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] Unless the context clearly requires otherwise, the words "include", "comprising" and similar words throughout the application should be interpreted as including rather than exclusive or exhaustive; that is, the meaning is "including but not limited to".

[0031] In the description of this application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified, the meaning of "plurality" is two or more.

[0032] Figure 1 Schematic diagram of the overall structure of the fixing device of this embodiment. Figure 1 The lens group fixing device of this embodiment includes a base 10, a first abutting rod 12, a second abutting rod 20 and a locking member 30. Figure 2 The base 10 is provided with a receiving groove 11 which passes through from front to back, a first abutting rod 12 is provided on one side of the groove wall of the receiving groove 11, and a connecting through hole 13 is provided on the other side of the groove wall. One end of the second abutting rod 20 passes through the connecting through hole 13 and extends into the receiving groove 11, and the locking member 30 is located in the receiving groove 11 and is threadedly connected with the second abutting rod 20. The locking member 30 abuts against the groove wall of the receiving groove 11, and can limit and lock the second abutting rod 20, thereby fixing the lens group between the first abutting rod 12 and the second abutting rod 20. The fixing device has a simple structure and is easy to operate. It can stably clamp and fix the lens group to facilitate the degumming of the lens group, reduce the bump damage to the lens group, and ensure the product quality of the lens group.

[0033] Figure 2 1 is a schematic diagram of the structure of the base 10 of this embodiment. Figure 2 The receiving groove 11 is a rectangular parallelepiped and is through in the width direction. The first abutment rod 12 and the second abutment rod 20 are arranged along the length direction to ensure that there is sufficient space to accommodate the lens group and reduce the obstruction of the operator's field of vision by the base 10. Figure 1 The diameter of the connecting through hole 13 matches the size of the second abutting rod 20 , so that the second abutting rod 20 can be limited in the height direction after extending into the accommodating groove 11 .

[0034] When the fixing device fixes the lens, the adjacent ends of the first abutting rod 12 and the second abutting rod 20 abut against the lens group respectively. The locking member 30 is located in the accommodating groove 11 and abuts against the groove wall of the accommodating groove 11. The first abutting rod 12 and the second abutting rod 20 abut against the top and bottom ends of the lens group respectively, so that the side of the lens group coated with glue can face the operator, which is convenient for the operator to remove the glue.

[0035] After the second abutting rod 20 and the first abutting rod 12 clamp the lens group, the second abutting rod 20 can no longer move in the direction close to the lens group. At this time, the locking member 30 is rotated to move it in the direction close to the groove wall provided with the connecting through hole 13 until the locking member 30 abuts against the groove wall. After the locking member 30 abuts against the groove wall, the second abutting rod 20 can be limited in the direction away from the lens group. Therefore, the second abutting rod 20 is limited and fixed by the connecting through hole 13, the lens group, and the locking member 30, and then cooperates with the first abutting rod 12 to stably clamp the lens group in the accommodating groove 11. After the glue removal is completed, the locking member 30 is rotated in the opposite direction to move it in the direction close to the lens group to unlock the second abutting rod 20, and then the lens group can be removed.

[0036] Reference Figure 3 The second abutment rod 20 is provided with an external thread 22. Figure 4 The locking member 30 is provided with a threaded hole 31. The threaded hole 31 matches the external thread 22 on the second abutting rod 20, and the locking member 30 and the second abutting rod 20 can be relatively moved by a spiral connection. The locking member 30 is one of an elliptical, plum blossom, square and hexagonal shape, which helps to increase the force application points on the locking member 30, making it easier to rotate the locking member 30 to lock or unlock the second abutting rod 20.

[0037] Reference Figure 2 , the first abutment rod 12 is arranged perpendicular to the groove wall of the accommodating groove 11, and the central axis of the first abutment rod 12 is located on the same straight line as the central axis of the connecting through hole 13. This enables the second abutment rod 20 to be arranged relative to the first abutment rod 12, and the central axis of the first abutment rod 12 is located on the same straight line as the central axis of the second abutment rod 20. Therefore, the forces exerted on both ends of the lens group are on the same straight line, which helps to maintain the force balance at both ends of the lens group and enhance the stability of the lens group in the accommodating groove 11. In addition, the size of the first abutment rod 12 is the same as the size of the second abutment rod 20, so that the forces exerted on both ends of the lens group are the same, ensuring that the lens group is not damaged.

[0038] Reference Figure 1 The first abutment rod 12 and the base 10 are integrally formed, which effectively reduces the overall manufacturing cost, reduces the connection and assembly between parts, and reduces the quality and precision problems caused by assembly errors. The distance between the first abutment rod 12 and the connecting through hole 13 and the bottom of the accommodating groove 11 is greater than the size of the lens group, so as to avoid collision and friction between the lens group and the accommodating groove 11.

[0039] Optionally, the first abutment rod 12 and the base 10 may also be provided with a detachable connection, such as a snap connection, a threaded connection, etc.

[0040] Reference Figure 3 , a holding piece 21 is provided at one end of the second abutting rod 20 away from the receiving groove 11. The size of the holding piece 21 is larger than the size of the second abutting rod 20, so that the operator can apply force to the second abutting rod 20. For example, when the second abutting rod 20 is inserted into the receiving groove 11, and when the second abutting rod 20 is locked or unlocked by rotating the locking piece 30, the second abutting rod 20 can be moved or fixed by the holding piece 21. Optionally, the holding piece 21 can be a square, circular, triangular or polygonal structure.

[0041] Reference Figure 1The fixing device of this embodiment further includes two buffers 40. The two buffers 40 are respectively connected to the ends of the first abutting rod 12 and the second abutting rod 20 located in the accommodating groove 11 to protect the lens group and reduce the wear and collision of the first abutting rod 12 and the second abutting rod 20 on the lens group. Optionally, the buffer 40 can be one of a rubber member, a sponge pad, a silicone member and a foam member, which can effectively prevent the first abutting rod 12 and the second abutting rod 20 from applying too much pressure to the lens group to cause damage to the lens group.

[0042] Reference Figure 5 , the buffer member 40 is provided with a groove 41, and the two buffer members 40 are respectively sleeved and connected with the first abutting rod 12 and the second abutting rod 20 through the groove 41. The shape of the groove 41 is the same as the cross-sectional shape of the first abutting rod 12 and the second abutting rod 20, and the size is the same, so that the groove 41 is connected with the first abutting rod 12 and the second abutting rod 20 by interference fit. And, the buffer member 40 can rotate relative to the first abutting rod 12 and the second abutting rod 20. After the first abutting rod 12 and the second abutting rod 20 clamp and fix the lens group, the lens group can be driven to rotate by rotating the two buffer members 40 at the same time. Rotating the lens group makes it convenient for the operator to remove the glue from the remaining parts, avoids multiple clamping operations on the lens group, simplifies the operation process, and effectively reduces the wear and damage to the lens group during multiple operations.

[0043] Optionally, the buffer member 40 may be a square, circular, triangular or polygonal structure. Also, the buffer member 40 and the first abutting rod 12 and / or the second abutting rod 20 may be threadedly connected or snap-fitted.

[0044] It is understandable that, based on the small size of the lens group, the overall size of the fixing device of this embodiment is also relatively small, and the operator can hold the fixing device holding the lens group in his hand to control the strength when removing the glue. In addition, the operator grasps the two sides of the base 10 to hold the fixing device, avoiding applying pressure to the second abutting rod 20, and avoiding the second abutting rod 20 applying excessive pressure to the lens group to cause damage.

[0045] The lens group fixing device of the embodiment of the present application limits and fixes the second abutment rod through a locking piece, so that the second abutment rod can cooperate with the first abutment rod to stably clamp the lens group, reducing the contact wear on the lens group during processing. At the same time, buffer parts are also provided on the first abutment rod and the second abutment rod to protect the lens group, avoiding manual bumps to the lens group during the degumming process. The fixing device has a simple structure and is easy to operate, which effectively reduces the bump damage to the lens group caused by the degumming process and ensures product quality.

[0046] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lens group fixing device, characterized in that: The fixing device comprises: The base (10) is provided with a receiving groove (11) which passes through from front to back, a first abutting rod (12) is provided on one side of the groove wall of the receiving groove (11), and a connecting through hole (13) is provided on the other side; A second abutment rod (20) is provided with an external thread (22), and one end of the second abutment rod (20) extends from the connecting through hole (13) into the accommodating groove (11); A locking member (30) is located in the accommodating groove (11), the locking member (30) is provided with a threaded hole (31), and the locking member (30) is screwedly connected to the second abutting rod (20) through the threaded hole (31); When the fixing device fixes the lens group, the adjacent ends of the first abutting rod (12) and the second abutting rod (20) respectively abut against the lens group, and the locking member (30) abuts against the groove wall of the accommodating groove (11).

2. The lens group fixing device according to claim 1, characterized in that: The first abutment rod (12) is arranged perpendicular to the groove wall of the accommodating groove (11), and the central axis of the first abutment rod (12) and the central axis of the connecting through hole (13) are located on the same straight line, and the second abutment rod (20) is arranged opposite to the first abutment rod (12).

3. The lens group fixing device according to claim 1, characterized in that: The first abutment rod (12) and the base (10) are integrally formed.

4. The lens group fixing device according to claim 1, characterized in that: The diameter of the connecting through hole (13) matches the size of the second abutment rod (20).

5. The lens group fixing device according to claim 1, characterized in that: The size of the first abutment rod (12) is the same as the size of the second abutment rod (20).

6. The lens group fixing device according to claim 1, characterized in that: The locking piece (30) is in one of the following shapes: oval, plum blossom, square and hexagonal.

7. The lens group fixing device according to claim 1, characterized in that: The fixing device further comprises two buffer members (40), and the two buffer members (40) are respectively connected to the ends of the first abutting rod (12) and the second abutting rod (20) located in the accommodating groove (11).

8. The lens group fixing device according to claim 7, characterized in that: The buffer member (40) is provided with a groove (41), and the two buffer members (40) are respectively sleeved and connected with the first abutting rod (12) and the second abutting rod (20) through the groove (41). The buffer member (40) is a square, circular, triangular or polygonal structure.

9. The lens group fixing device according to claim 7, characterized in that: The buffer component (40) is one of a rubber component, a sponge pad, a silicone component and a foam component.

10. The lens group fixing device according to claim 1, characterized in that: A holding piece (21) is provided at one end of the second abutting rod (20) away from the accommodating groove (11); the size of the holding piece (21) is larger than the size of the second abutting rod (20); and the holding piece (21) is a square, circular, triangular or polygonal structure.

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