CN114513590A

CN114513590A - Camera shooting module

Info

Publication number: CN114513590A
Application number: CN202111598890.7A
Authority: CN
Inventors: 农开勋; 张扣文; 唐新科
Original assignee: Zhejiang Sunyu Zhiling Technology Co ltd
Current assignee: Zhejiang Sunyu Zhiling Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-05-17
Anticipated expiration: 2041-12-24
Also published as: CN114513590B

Abstract

The invention relates to a camera module which comprises upper shells (101,201), lower shells (102,202), a lens (3) and a circuit board (4), wherein the upper shells (101,201) are connected with the lower shells (102,202) at one end, the lens (3) is positioned in the upper shells (101,201), the circuit board (4) is positioned in the lower shells (102,202), clamping grooves (1011,2011) are formed in the outer side surfaces of the upper shells (101,201), clamping plates (1021,2021) are arranged at one ends, facing the upper shells (101,201), of the lower shells (102,202), and the clamping plates (1021,2021) are clamped in the clamping grooves (1011,2011). The present invention can complete the assembly of the upper and lower housings without using screws, thereby maximizing the internal space of the module.

Description

Camera shooting module

Technical Field

The invention relates to a camera module.

Background

Along with the rapid development of the automobile industry, the technology of the vehicle-mounted camera is mature day by day, more and more automobiles are equipped with the camera as an advanced driving auxiliary system, so that the pixel requirement for the vehicle-mounted camera to shoot images in the field is higher and higher, and the size of the module is required to be developed towards the miniaturization direction more and more. However, the power consumption of the high-pixel camera module is also high, so that the offset of the focal point of the lens is large when the temperature of the product is increased after the product works, and the image quality is poor. In addition, the existing camera module shell is usually fixed by matching the upper shell with the lower shell through a buckle structure and a screw, in the mode, the screw structure can greatly occupy the internal space of the module, and the buckle and the screw inevitably protrude out of the shell, so that the protruding object standard of the vehicle-mounted device cannot be met. Moreover, the mode of the buckle connection is easy to loosen, so that the reliability of the module is poor.

Disclosure of Invention

The invention aims to provide a camera module.

In order to achieve the purpose, the invention provides a camera module which comprises an upper shell, a lower shell, a lens and a circuit board, wherein the upper shell is connected with the lower shell at one end, the lens is positioned in the upper shell, the circuit board is positioned in the lower shell, a clamping groove is formed in the outer side surface of the upper shell, a clamping plate is arranged at one end, facing the upper shell, of the lower shell, and the clamping plate is clamped in the clamping groove.

According to an aspect of the present invention, the catching groove includes a first stage groove body and a second stage groove body arranged from an end of the upper case facing the lower case toward a direction away from the lower case.

According to one aspect of the invention, the depth of the primary channel is less than the depth of the secondary channel;

the clamping and connecting plate is positioned in the first-stage groove body and extends towards the upper shell, and the tail end of the clamping and connecting plate continues to extend towards the interior of the second-stage groove body to form a connecting section;

the size of the second-stage groove body along the direction of the upper shell towards the lower shell is larger than the extension length of the connecting section.

According to one aspect of the invention, the connecting section is flush with the clamping plate before installation; when the device is installed, the connecting section is bent inwards to enter the second-stage groove body.

According to one aspect of the invention, the depth of the first-stage groove body is the same as that of the second-stage groove body, and the first-stage groove body and the second-stage groove body are adaptive to the shape of the clamping plate;

the clamping and connecting plate is positioned in the first-stage groove body and extends towards the upper shell, and the tail end of the clamping and connecting plate extends towards one side or two sides to form a limiting part;

the limiting part is positioned in the second-stage groove body.

According to an aspect of the present invention, the shape of the stopper portion is rectangular, trapezoidal, dovetail, or triangular.

According to one aspect of the invention, prior to installation, the clamping plate is arranged obliquely outwards; when the clamping plate is installed, the clamping plate is pressed inwards to be straight to enter the clamping groove.

According to one aspect of the invention, a photosensitive chip is arranged on one side of the circuit board facing the lens, and one side of the circuit board far away from the lens is connected with the lower shell through a heat conducting medium.

According to one aspect of the invention, an annular groove is formed at one end of the upper shell, which is far away from the lower shell, and the groove bottom of the annular groove is flush with one end of the second-stage groove body, which is far away from the lower shell.

According to one aspect of the invention, an end of the upper shell remote from the lower shell is rounded.

According to one aspect of the present invention, a sealing ring made of silicon rubber is provided between the upper case and the lower case.

According to one aspect of the present invention, the upper shell and the lens barrel of the lens are made of plastic, and the lower shell is made of metal.

According to one aspect of the invention, the metal is an aluminum alloy.

According to an aspect of the present invention, the catching groove and the catching plate are respectively located at each side of the upper case and the lower case.

According to the concept of the invention, the clamping groove and the clamping plate are respectively arranged at the connecting part of the upper shell and the lower shell, and the clamping plate is bent by a jig during installation so as to be locked with the upper shell, so that the assembly of the shell can be completed without screws, and the maximization of the internal space of the module is realized.

According to one scheme of the invention, the upper shell is made of plastic resin, the lower shell is made of metal, and the heat-conducting medium is arranged between the circuit board and the lower shell, so that heat generated by a heating device on the circuit board inside the lower shell can be transferred to the lower shell through the heat-conducting medium, heat of the module is concentrated on the metal lower shell, and the temperature of the upper shell and the temperature of the lens can be kept at a lower level, thereby improving the imaging quality of the product at high temperature and solving the problem that the imaging quality of the lens is poor due to the temperature rise of the miniaturized module after working. Meanwhile, the lower shell made of metal materials is convenient for the clamping plate on the lower shell to bend.

According to one scheme of the invention, the sealing ring is arranged at the connecting part of the upper shell and the lower shell, so that good waterproof and dustproof functions can be realized.

Drawings

Fig. 1 is a sectional view schematically showing a camera module according to an embodiment of the present invention;

fig. 2 is a front view schematically showing a camera module according to a first embodiment of the present invention;

FIG. 3 is a cross-sectional view taken at a-a of FIG. 2 (pre-installation state);

FIG. 4 is a cross-sectional view taken at a-a of FIG. 2 (as installed);

fig. 5 is a front view schematically showing a camera module according to a second embodiment of the present invention;

fig. 6 is an enlarged view of fig. 5 at b (a rectangular stopper portion extending to both sides);

fig. 7 is an enlarged view of fig. 5 at b (a trapezoidal stopper portion extending to both sides);

fig. 8 is an enlarged view of fig. 5 at b (a dovetail-shaped stopper portion extending to both sides);

fig. 9 is an enlarged view of fig. 5 at b (a rectangular stopper portion extending to one side);

fig. 10 is a perspective view schematically showing a camera module according to a second embodiment of the present invention (a state before mounting);

fig. 11 is a perspective view schematically showing a camera module according to a second embodiment of the present invention (mounted state);

fig. 12 is an isometric view schematically showing a camera module according to a first embodiment of the present invention (with rounded upper housing);

fig. 13 is an isometric view schematically showing a camera module according to a second embodiment of the present invention (with rounded upper housing);

fig. 14 is a perspective view schematically showing a camera module according to a first embodiment of the present invention (an upper case is provided with an annular groove);

fig. 15 is a perspective view schematically showing a camera module according to a second embodiment of the present invention (an upper case is provided with an annular groove).

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," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.

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

Referring to fig. 1, the camera module of the present invention is mainly used as a vehicle-mounted camera, but may be used for other purposes. The camera module comprises

upper shells

101 and 201, lower shells 102 and 202, a lens 3 and a circuit board 4. Wherein the upper case 101,201 is connected to the lower case 102,202 at one end; the lens 3 is positioned in the upper shell 101,201, and the two can be separated or integrated; the wiring board 4 is located in the lower case 102, 202. A sealing ring 8 made of silicon rubber is arranged between the

upper shells

101 and 201 and the lower shells 102 and 202, so that sealing is formed at the connecting part of the

upper shells

101 and 201 and the lower shells 102 and 202, and water and dust prevention is realized. The shape of the sealing ring 8 is adapted to the structural design of the upper and lower shells, and the sealing ring can not fall off after being assembled. The materials of the

upper shells

101 and 201 and the lens barrel of the lens 3 are both plastic (i.e., resin), and the materials of the lower shells 102 and 202 are metal, preferably aluminum alloy, but other formable metal materials are also possible. The upper side of the circuit board 4 is provided with a photosensitive chip 5 (i.e. SENSOR) and other electronic components, and the lower side is connected with the lower shells 102 and 202 through a heat-conducting medium 6. In this way, the heat generated by the heat generating device on the circuit board 4 can be conducted to the lower shell 102,202 through the heat conducting medium 6, so that the heat of the whole module is concentrated on the lower shell 102,202, and the temperature rise of the lens 3 and the upper shell 101,201 is lower, so as to improve the imaging quality of the lens 3 after the temperature of the module rises during operation.

In the invention, the outer side surfaces of the

upper shells

101 and 201 are provided with

clamping grooves

1011,2011, the upper ends of the lower shells 102 and 202 are provided with

clamping plates

1021,2021, and the

clamping plates

1021,2021 are clamped in the

clamping grooves

1011,2011, so that the

upper shells

101 and 201 and the lower shells 102 and 202 are fixed. The

clamping groove

1011,2011 includes

first stage grooves

1011a, 2011a and

second stage grooves

1011b, 2011b arranged from bottom to top. In the embodiments shown in the figures, the camera module is generally square, and the snap structure formed by the

snap groove

1011,2011 and the

snap plate

1021,2021 is disposed on each side of the upper and lower cases. Of course, in other embodiments, the position of joint structure can be arranged according to the structure of the module of making a video recording, as long as guarantee to connect stably can.

Referring to fig. 2 to 4, according to the first embodiment of the present invention, the first stage groove body 1011a has a smaller depth than the second stage groove body 1011b, thereby forming a stepped structure. The clamping plate 1021 is located in the first-stage slot 1011a and extends upwards, and the end of the clamping plate continues to extend towards the inside of the second-stage slot 1011b to form a connecting section 1021 a. As shown in fig. 3, before installation, the connecting section 1021a is flush with the clamping plate 1021; when the installation is carried out, the upper shell and the lower shell are assembled, and then the connecting section 1021a is bent inwards into the second-stage groove body 1011b by using a jig according to the arrow direction in fig. 3 to form the state shown in fig. 4, so that the upper shell 101 is hooked, and the upper shell 101, the sealing ring 8 and the lower shell 102 are fixed firmly. In this embodiment, the second-stage groove 1011b has a dimension in the vertical direction greater than the extension length of the connecting section 1021a, so as to facilitate the inward bending of the connecting section 1021 a.

Referring to fig. 5 to 9, according to the second embodiment of the present invention, the depth of the first stage groove 2011a and the second stage groove 2011b are the same and are adapted to the shape of the clamping plate 2021. The snap-fit plate 2021 is located in the first-stage groove 2011a and extends upward, and the end of the snap-fit plate extends laterally to form a limiting portion 2021a, so as to be matched and fixed with the second-stage groove 2011 b. In the present embodiment, the stopper portion 2021a may extend to both sides to form a "T" shaped structure as shown in fig. 6 to 8, or may extend to one side to form a structure as shown in fig. 9. The limiting portion 2021a is located in the second-stage groove 2011b, and is clamped and fixed with the second-stage groove 2011 b. In the present embodiment, the shape of the stopper portion 2021a may be rectangular (as shown in fig. 6), trapezoidal (as shown in fig. 7), dovetail (as shown in fig. 8), or triangular. Of course, in other embodiments, the contact surfaces of the stopper 2021a and the second-stage groove 2011b may be configured to have other shapes as needed. As shown in fig. 10, before installation, the clamping plate 2021 is inclined outward and is open, so that the upper casing 201 is convenient to install; when the installation is performed, the upper case 201 is first installed on the lower case 202, and then the clamping board 2021 is pressed inward by the jig according to the arrow direction in fig. 10 and is straightened and enters the clamping groove 2011 to form the state shown in fig. 11, so that the upper case 201 is hooked to fix the upper case 201, the sealing ring 8 and the lower case 202 firmly.

Referring to fig. 12 and 13, in the present invention, the

clip groove

1011,2011 and the

clip plate

1021,2021 can be hidden in the walls of the upper cases 101,201 so that they cannot be seen from the front end of the camera module, as required by the shape or processing conditions. In order to meet the requirement above the outer protrusion R2.5, the front end of the upper case 101,201 should be rounded. Of course, referring to fig. 14 and 15, in order to meet the assembly requirements, an annular groove 7 may be provided at the front end of the upper case 101,201, thereby making the upper case 101,201 smaller in size. The bottom of the annular groove 7 is flush with the ends of the second-

stage grooves

1011b and 2011b far away from the lower shells 102 and 202, so that the clamping

groove

1011,2011 and the

clamping plate

1021,2021 can be seen from the front end of the camera module.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. 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. A camera module comprising an upper case (101,201), a lower case (102,202), a lens (3), and a circuit board (4), the upper case (101,201) being connected at one end to the lower case (102,202), the lens (3) being located in the upper case (101,201), the circuit board (4) being located in the lower case (102,202), characterized in that a snap groove (1011,2011) is provided on an outer side surface of the upper case (101,201), a snap plate (1021,2021) is provided on an end of the lower case (102,202) facing the upper case (101,201), and the snap plate (1021,2021) is snapped in the snap groove (1011,2011).

2. The camera module according to claim 1, wherein the snap groove (1011,2011) comprises a first stage groove body (1011a, 2011a) and a second stage groove body (1011b, 2011b) which are arranged from one end of the upper shell (101,201) facing the lower shell (102,202) to a direction away from the lower shell (102, 202).

3. The camera module according to claim 2, wherein the depth of the first stage groove body (1011a) is smaller than that of the second stage groove body (1011 b);

the clamping and connecting plate (1021) is positioned in the first-stage groove body (1011a) and extends towards the upper shell (101), and the tail end of the clamping and connecting plate continues to extend towards the interior of the second-stage groove body (1011b) to form a connecting section (1021 a);

the size of the second-stage groove body (1011b) along the direction of the upper shell (101) towards the lower shell (102) is larger than the extension length of the connecting section (1021 a).

4. A camera module according to claim 3, characterized in that, before mounting, the connecting section (1021a) is flush with the bayonet plate (1021); when the connecting section is installed, the connecting section (1021a) is bent inwards to enter the inside of the second-stage groove body (1011 b).

5. The camera module according to claim 2, characterized in that the first stage groove (2011a) and the second stage groove (2011b) have the same depth and are adapted to the shape of the snap plate (2021);

the clamping and connecting plate (2021) is positioned in the first-stage groove body (2011a), extends towards the upper shell (201), and the tail end of the clamping and connecting plate extends towards one side or two sides to form a limiting part (2021 a);

the limiting part (2021a) is positioned in the second-stage groove body (2011 b).

6. The camera module according to claim 5, wherein the shape of the stopper portion (2021a) is rectangular, trapezoidal, dovetail or triangular.

7. The camera module according to claim 5, characterized in that, before mounting, the snap-fit plate (2021) is disposed obliquely outwards; when mounted, the snap plate (2021) is pressed inward straight into the snap groove (2011).

8. The camera module according to claim 1, characterized in that the side of the circuit board (4) facing the lens (3) is provided with a photosensitive chip (5), and the side away from the lens (3) is connected with the lower shell (102,202) through a heat-conducting medium (6).

9. The camera module according to claim 2, characterized in that the end of the upper shell (101,201) remote from the lower shell (102,202) is provided with an annular groove (7).

10. The camera module according to claim 1, characterized in that a sealing ring (8) of silicone rubber is arranged between the upper shell (101,201) and the lower shell (102, 202).

11. The camera module according to claim 1, wherein the upper shell (101,201) and the lens barrel of the lens (3) are made of plastic, and the lower shell (102,202) is made of metal.

12. The camera module of claim 1, wherein the snap groove (1011,2011) and the snap plate (1021,2021) are located on respective sides of the upper housing (101,201) and the lower housing (102, 202).