CN214845959U

CN214845959U - Lens barrel fixing device

Info

Publication number: CN214845959U
Application number: CN202121010627.7U
Authority: CN
Inventors: 陈宽; 乔英峰; 张良冬; 代徐密; 胡朝泽; 曾家亮; 井长伟
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-11-23
Anticipated expiration: 2031-05-12

Abstract

The utility model relates to a lens cone fixing device, including base (1), annular clamping ring (2), end needle (3) and preforming (4), base (1) with annular clamping ring (2) are connected through one side, the mobilizable setting of end needle (3) is in base (1) is kept away from one side of annular clamping ring (2), the mobilizable setting of preforming (4) is in annular clamping ring (2) is kept away from one side of base (1), end needle (3) with preforming (4) position is relative and all along circumferencial direction interval arrangement. The utility model discloses a lens cone fixing device can improve the depth of parallelism detection of cell-phone lens cone.

Description

Lens barrel fixing device

Technical Field

The utility model relates to a lens cone fixing device.

Background

With the rapid development of the optical industry, the pixels of the mobile phone lens are also improved, specifically from 100 to 10800 thousands, so that the performance requirements on the mobile phone lens are higher and higher. MTF is an important index of lens evaluation performance, and the main influencing factors are lens surface type, eccentricity, assembly error and fit difference between components. Therefore, it is important to improve the accuracy of the measurement of the feature size, which is one of the main aids for the MTF yield guarantee and improvement. In the prior art, in order to ensure the precision of the lens barrel testing size, the lens barrel is tested by a contact probe, and the accuracy of testing data is ensured by fixing the lens barrel because the contact probe can generate force on the lens barrel. Thus, the prior art alternative tests suffer from the following major disadvantages: firstly, in order to fix the lens cone, the front end face can be stuck on a jig, and direct measurement cannot be carried out; in addition, the adhered lens barrel cannot be reused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned problem, provide a lens cone fixing device.

In order to realize the utility model discloses the purpose, the utility model provides a lens cone fixing device, including base, annular clamping ring, end needle and preforming, the base with annular clamping ring connects through one side, the mobilizable setting of end needle is in the base is kept away from one side of annular clamping ring, the mobilizable setting of preforming is in annular clamping ring is kept away from one side of base, the end needle with the preforming position is relative and all along the circumferencial direction interval arrangement.

According to one aspect of the utility model, one side surface of the base is provided with an annular blocking bulge, and the other side is provided with an annular groove for accommodating the annular pressing ring;

the blocking protrusion is provided with first guide grooves which are arranged at intervals along the circumferential direction and used for containing the bottom needle, and the bottom of each first guide groove is provided with a first mounting hole.

According to one aspect of the present invention, the base needle has a first connecting portion and an abutting portion;

the first connecting part is a strip-shaped flat plate, and a strip-shaped first limiting hole is formed in the middle of the first connecting part;

the width of the leaning part is smaller than that of the first connecting part, but the thickness of one end, far away from the leaning part, of the leaning part is larger than that of the first connecting part.

According to the utility model discloses an aspect, annular clamping ring one side is equipped with along the circumferencial direction interval and is used for holding the second guide way of preforming, the tank bottom of second guide way is equipped with the second mounting hole.

According to one aspect of the present invention, the pressing piece has a second connecting portion and a pressing portion;

the second connecting part is a strip-shaped flat plate, and a strip-shaped second limiting hole is formed in the middle of the second connecting part;

the pressing portion is perpendicular to the second connecting portion, one end of the pressing portion is connected with the end portion of the second connecting portion, and the other end of the pressing portion extends perpendicularly towards the direction far away from the second connecting portion to form an extending section.

According to an aspect of the utility model, the base middle part is equipped with the through-hole that is used for holding the lens cone.

According to an aspect of the utility model, the base needle with the preforming is installed through the bolt respectively the base with on the annular clamping ring.

According to the utility model discloses an aspect still includes the spring, and the cover is established and is used for the installation on the bolt of preforming.

According to an aspect of the utility model, the spring diameter is 8mm, the bolt diameter is 2.5 mm.

According to an aspect of the present invention, the base pin and the pressing piece are respectively provided three.

According to the utility model discloses a design provides a lens cone fixing device of general type for fixed horizontal cell-phone lens cone, the depth of parallelism of the lens cone of accomplishing optics cell-phone camera lens detects, guarantees that the power of visiting the lens cone does not influence the test result, and the lens cone that has tested can the secondary use.

According to the utility model discloses a scheme sets up first guide way on the base, sets up the second guide way on annular pressing ring, and end needle and preforming are installed respectively in two guide ways to can be at wherein translation. Thereby make base and annular clamping ring installation back, the position of accessible adjusting bolt's elasticity is adjusted the position of base needle and preforming to satisfy the test demand of not unidimensional lens cone.

According to the utility model discloses a scheme, the spring is established to extra cover on the bolt to can make the in-process that the bolt was adjusted, the spring can make the lens cone remain the compression state throughout, with the assurance to the stable fixed of lens cone.

Drawings

Fig. 1 is a view schematically showing a combination state of a lens barrel fixing device according to an embodiment of the present invention;

fig. 2 is a schematic view showing a spring and a bolt engaged with the spring in a lens barrel fixing device according to an embodiment of the present invention;

fig. 3 is a perspective view schematically showing a base in a lens barrel fixing device according to an embodiment of the present invention;

fig. 4 is a perspective view schematically showing an annular pressing ring in the lens barrel fixing device according to an embodiment of the present invention;

fig. 5 is a perspective view schematically showing a base pin (left) and a pressing piece (right) in the lens barrel fixing device according to the embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In describing embodiments of the present invention, the terms "longitudinal," "lateral," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and other terms are used in an orientation or positional relationship shown in the associated drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments, which are not repeated herein, but the present invention is not limited to the following embodiments.

Referring to fig. 1, the lens barrel fixing device (or called jig) of the present invention includes a base 1, an annular pressing ring 2, a base pin 3 and a pressing plate 4. Base 1 and annular clamping ring 2 constitute the utility model discloses a fixing device's basic structure in one side fixed connection. So, lens cone fixing device main part adopts such split type structure of base 1 and annular clamping ring 2, and wherein, stability when base 1 can guarantee lens cone A test, and annular clamping ring 2 can guarantee that lens cone A atress is even. The bottom needle 3 is movably arranged on one side of the base 1 far away from the annular pressing ring 2 and is used for abutting against the side surface of the lens barrel A; the pressing sheet 4 is movably arranged on one side of the annular pressing ring 2 away from the base 1 and used for supporting the bottom of the lens cone A. The bottom needle 3 and the pressing sheet 4 are opposite in position and are arranged at intervals along the circumferential direction. In the present embodiment, the bed pins 3 and the pressing pieces 4 are provided three by three, i.e., at 120 ° intervals. Of course, in other embodiments, the number and the interval of the bottom needles 3 and the pressing sheets 4 can be adjusted according to actual requirements.

Referring to fig. 2, the base pin 3 and the pressing plate 4 of the present invention are respectively mounted on the base 1 and the annular pressing ring 2 through the bolts 5, so that the pressed size of the lens barrel can be controlled by adjusting the tightness of the bolts 5. In the present embodiment, the bolt 5 has a diameter of 2.5 mm. In addition, in order to make the lens barrel always in a pressed state, the utility model is also provided with a spring 6, the structure of which is shown in the left side view of fig. 2. As can be seen from the right side view of fig. 2, the mounting manner of the spring 6 of the present invention is that the bolt 5 for mounting the pressing plate 4 is sleeved with the spring 6, so that the bolt 5 can compress the spring 6 when screwed, and the pressing plate 4 is always pressed and held at the bottom of the lens barrel. In this embodiment, the diameter of the spring 6 is 8mm, so that the spring 6 is relatively thick relative to the bolt 5, thereby providing relatively effective pressure.

Referring to fig. 3, one side surface of the base 1 is provided with an annular blocking protrusion 11, the other side is provided with an annular groove 12 for accommodating the annular pressing ring 2, and in addition, the middle of the base 1 is further provided with a circular through hole 15 for accommodating the lens barrel. As will be understood from the embodiment shown in fig. 3, the base 1 is substantially a regular rectangular plate-like structure, and in conformity with this, the blocking projections 11 may be provided around the outer edge of the side surface of the base 1. The blocking protrusion 11 is provided with first guide grooves 13 arranged at intervals in the circumferential direction for accommodating the lower needle 3. It can be seen that the main function of the blocking projection 11 is to form the above-mentioned groove for guiding the base needle 3, so that the blocking projection 11 can be formed in a ring shape, thereby avoiding the base 1 from being too thick. Since the lower needle 3 is mounted on the bottom of the first guide groove 13, the bottom of the first guide groove 13 is provided with the first mounting hole 14. As described above, since the bed pin 3 is mounted by a bolt, the first mounting hole 14 needs to be a screw hole. The annular groove 12 on the other side of the base 1 is used for installing the annular pressing ring 2, and the shape of the annular pressing ring can be circular. When the fixing device is installed, the whole fixing device is vertically placed, namely the base 1 is also vertically placed, the square first guide groove 13 on one side (back) of the fixing device can be inserted into the bottom needle 3, and the fixing device is screwed into the first installation hole 14 through the bolt 5 to realize fixing; the annular groove 12 on the other side (front) can be inserted into the annular pressing ring 2 and also fixed by the bolt 5 (see the lower section). Of course, it is understood from the above concept that the first guide grooves 13 should be designed at such an angle in order to arrange the lower needles 3 at intervals of 120 °.

Referring to fig. 4, the annular clamping ring 2 is mounted in the annular recess 12 of the base 1 and is therefore shaped as a ring adapted to the groove. The side of the annular groove 2 shown in the right side view of fig. 4 is provided with second guide grooves 21 at intervals in the circumferential direction for accommodating the pressing pieces 4, and the bottom of the second guide grooves 21 is provided with second mounting holes 22. The second mounting hole 22 is used for mounting the pressing piece 4 by a bolt, and thus it is also a screw hole. As can be seen, the annular pressure ring 2 is provided with second mounting holes 22 arranged at intervals in the circumferential direction, which holes may penetrate the annular pressure ring 2 as it is, as shown in the present embodiment. The annular clamping ring 2 can thus be fixed in the annular groove 12 of the base 1 directly by means of bolts inserted into this mounting hole. Specifically, a bolt 5 can be inserted into each second mounting hole 22, a spring 6 is sleeved on each bolt 5, and then the bolt 5 is embedded into the base 1 of the jig, and the bolt 5 is screwed to fix the base 1 of the jig. Of course, in other embodiments, the annular pressing ring 2 can be fixed in other manners as long as the adjustment requirement of the pressing sheet 4 is not affected. Similarly, the second guide grooves 21 are also arranged adjacent to each other at 120 °. Of course, the fixing of the annular pressing ring 2 of the present invention does not mean that it cannot move, but mainly means that it does not need to move in the working state.

Referring to the left side view of fig. 5, the bottom needle 3 has a first connecting portion 31 and an abutting portion 32, and the first connecting portion 31 is a long strip-shaped flat plate, and may be rectangular in shape to fit the square first guide groove 13. The first connecting portion 31 is provided with a first elongated hole 33 extending along the length direction thereof. The width of the abutting part 32 is smaller than that of the first connecting part 31, but the thickness of one end far away from the first connecting part 31 is larger than that of the first connecting part 31, so that a shape similar to a needle point is formed, and accurate abutting is formed on the side face of the lens barrel. Referring to the right side view of fig. 5, the pressing sheet 4 is also divided into two parts, i.e., a second connecting part 41 and a pressing part 42. The second connecting portion 41 has a similar function to the first connecting portion 31 of the base needle 3, and also has a mounting and guiding function, so that the second connecting portion is also a long-strip-shaped flat plate, and the middle portion of the second connecting portion is provided with a long-strip-shaped second limiting hole 43 for inserting the bolt 5 for mounting. However, since the pressing sheet 4 has a function of pressing the lens barrel, the pressing portion 42 is not in the same plane as the second connecting portion 41 but perpendicular to the second connecting portion 41, so that the structure has certain elasticity. In order to make good contact with the bottom of the lens barrel, the upper end of the pressing portion 42 is connected to the end of the second connecting portion 41, and the lower end extends perpendicular to the pressing portion 42 in a direction away from the second connecting portion 41 to form an extending section 44. In the present embodiment, the pressing sheet 4 is actually formed in three sections, and the extension section 44 is parallel to the second connecting portion 41 and the pressing portion 42 is perpendicular to the two sections.

According to the arrangement, in the installation state, the bottom needle 3 and the pressing sheet 4 can be adjusted to move horizontally along respective guide grooves to adjust the positions by loosening the bolt 5 so as to be adapted to lens barrels with different sizes, particularly lens barrels with the diameter of 3mm-15mm, so that the adjustment range covers all sizes of mobile phone lens barrels, and the requirement of transverse fixing test of the lens barrels is met.

To sum up, the utility model discloses a lens cone fixing device fixes the lens cone through the elasticity degree of adjustment base needle 3, preforming 4 and bolt 5, makes its accurate level place, then can test its preceding terminal surface, rear end face and lens through horizontal probe and hold the depth of parallelism between the face of leaning on to improve the detection of the depth of parallelism between the above-mentioned each face, with showing the accuracy that improves lens cone depth of parallelism detection, satisfy the dimensional tolerance requirement of lens cone, thereby improve the finished product yield of camera lens production. Moreover, the device has strong applicability, can meet the lens cone tests of different part numbers by utilizing the bottom needle and the pressing sheet with adjustable positions, and reduces the manufacturing difficulty of the jig, thereby reducing the cost.

The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The lens cone fixing device is characterized by comprising a base (1), an annular pressing ring (2), a bottom needle (3) and a pressing sheet (4), wherein the base (1) and the annular pressing ring (2) are connected through one side, the bottom needle (3) is movably arranged on one side, away from the annular pressing ring (2), of the base (1), the pressing sheet (4) is movably arranged on one side, away from the base (1), of the annular pressing ring (2), and the bottom needle (3) and the pressing sheet (4) are opposite in position and are arranged at intervals along the circumferential direction.

2. The lens barrel fixing device according to claim 1, wherein one side surface of the base (1) is provided with an annular blocking protrusion (11), and the other side is provided with an annular groove (12) for accommodating the annular pressing ring (2);

the blocking protrusion (11) is provided with first guide grooves (13) which are arranged at intervals along the circumferential direction and used for containing the bottom needle (3), and the bottoms of the first guide grooves (13) are provided with first mounting holes (14).

3. The lens barrel fixing device according to claim 1 or 2, wherein the base pin (3) has a first connecting portion (31) and an abutting portion (32);

the first connecting part (31) is a strip-shaped flat plate, and a strip-shaped first limiting hole (33) is formed in the middle of the first connecting part;

the width of the abutting part (32) is smaller than that of the first connecting part (31), but the thickness of one end far away from the abutting part (32) is larger than that of the first connecting part (31).

4. The lens barrel fixing device according to claim 1, wherein a second guide groove (21) for receiving the pressing piece (4) is provided at a circumferential interval on one side of the annular pressing ring (2), and a second mounting hole (22) is provided on a groove bottom of the second guide groove (21).

5. The lens barrel fixing device according to claim 1 or 4, wherein the pressing piece (4) has a second connecting portion (41) and a pressing portion (42);

the second connecting part (41) is a strip-shaped flat plate, and a strip-shaped second limiting hole (43) is formed in the middle of the second connecting part;

the pressing portion (42) is perpendicular to the second connecting portion (41), one end of the pressing portion is connected with the end portion of the second connecting portion (41), and the other end of the pressing portion extends perpendicularly towards the direction far away from the second connecting portion (41) to form an extending section (44).

6. Lens barrel fixing device according to claim 1, wherein the base (1) is provided with a through hole (15) in the middle for accommodating a lens barrel.

7. The lens barrel fixing device according to claim 1, wherein the base pin (3) and the pressing piece (4) are mounted on the base (1) and the annular pressing ring (2) by bolts (5), respectively.

8. The lens barrel fixing device according to claim 7, further comprising a spring (6) fitted over a bolt (5) for mounting the pressing piece (4).

9. The lens barrel fixing device according to claim 8, wherein the spring (6) has a diameter of 8mm and the bolt (5) has a diameter of 2.5 mm.

10. The lens barrel fixing device according to claim 1, wherein the base pin (3) and the pressing piece (4) are provided three each.