Sealing structure for camera

Abstract

The utility model relates to the technical field of cameras, and discloses a sealing structure for a camera, which comprises a lens mount, a PCB (printed circuit board) and a sealing ring arranged between the lens mount and the PCB, the lens mount is provided with a mounting groove, the sealing ring is arranged in the mounting groove, one side of the sealing ring close to the lens mount is provided with a V-shaped groove, the PCB is detachably connected with a plurality of fasteners, and the fasteners are arranged in the mounting groove. The fastener is used for fixing the PCB on the lens mount. According to the technical scheme of the utility model, the lens mount and the PCB can be sealed, the extrusion force of the sealing ring on the PCB can be reduced, and the PCB is not easy to deform, thereby ensuring the image resolution.

Description

Technical Field

[0001] The utility model relates to the technical field of cameras, in particular to a sealing structure for cameras. Background Art

[0002] In order to ensure that the camera can work stably for a long time in a harsh environment, it is usually necessary to perform waterproof and dustproof treatment on the camera. The existing sealing structure for the camera includes a lens mount, a PCB board, and a sealing ring arranged between the lens mount and the PCB board. The lens mount and the PCB board are sealed by the sealing ring to play a waterproof and dustproof role. However, the existing sealing ring usually adopts an O-ring or a square sealing ring. The use of an O-ring or a square sealing ring to seal the lens mount and the PCB board will cause the sealing ring to exert a large extrusion force on the PCB board, which can easily cause the PCB board to deform, thereby causing the photosensitive imaging chip on the PCB board to shift, causing the focus to change, and then resulting in a decrease in image resolution. Utility Model Content

[0003] The utility model aims to provide a sealing structure for a camera, which can seal a lens holder and a PCB board, and at the same time, can reduce the squeezing force of the sealing ring on the PCB board, and is not likely to cause deformation of the PCB board, thereby ensuring image resolution.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sealing structure for a camera, comprising a lens mount, a PCB board and a sealing ring arranged between the lens mount and the PCB board, the lens mount being provided with a mounting groove, the sealing ring being placed in the mounting groove, a V-shaped groove being provided on a side of the sealing ring close to the lens mount, a plurality of fasteners being detachably connected to the PCB board, the fasteners being used to fix the PCB board to the lens mount.

[0005] The beneficial effects of this solution are as follows: during assembly, the sealing ring is first placed in the installation groove, and the opening direction of the V-shaped groove is directed toward the lens mount, and then the PCB board is fixed to the lens mount by fasteners. Due to the provision of the sealing ring, this technical solution can seal the lens mount and the PCB board, thereby playing a waterproof and dustproof role; when the lens mount and the PCB board are assembled together, the lens mount and the PCB board exert opposite extrusion forces on the sealing ring. Since the side of the sealing ring close to the lens mount is provided with a V-shaped groove, the middle part of the sealing ring is hollowed out, thereby reducing the extrusion force on the middle part of the sealing ring, further reducing the extrusion deformation of the sealing ring on the PCB board, thereby preventing the photosensitive imaging chip on the PCB board from being displaced, and ensuring image resolution.

[0006] Furthermore, the longitudinal cross-sectional area of ​​the sealing ring on the side close to the PCB board is smaller than the longitudinal cross-sectional area of ​​the sealing ring on the side close to the lens mount, and the longitudinal cross-sectional area at the middle position of the sealing ring is the largest.

[0007] The beneficial effects of this solution are as follows: through clever design, this technical solution makes the longitudinal cross-sectional area of ​​the sealing ring close to the PCB board smaller than the longitudinal cross-sectional area of ​​the sealing ring close to the lens mount, and a V-shaped groove is provided on the side of the sealing ring close to the lens mount. During assembly, the contact area between the sealing ring and the PCB board and the lens mount can be effectively reduced, thereby reducing the extrusion of the sealing ring on the PCB board and the lens mount. By setting the middle part of the sealing ring to be hollow, the extrusion force generated in the middle part can be further reduced, and the PCB board can be prevented from being deformed. At the same time, since the longitudinal cross-sectional area of ​​the middle position of the sealing ring is the largest, the sealing effect of the sealing ring can be guaranteed, so that the sealing ring plays a waterproof and dustproof role.

[0008] Furthermore, the acute angle formed by the two oblique sides of the V-shaped groove is α, α is 60°, and the acute angle formed by the two oblique sides of the sealing ring is β, β is 60°.

[0009] The beneficial effect of this solution is that by setting both α and β to 60°, this technical solution makes the extrusion force on the sealing ring more uniform, reduces the extrusion of the sealing ring on the PCB board, and thus prevents the PCB board from being deformed.

[0010] Furthermore, positioning blocks are fixedly connected to the four inwardly protruding corners of the sealing ring, and a side of the positioning block close to the PCB board is lower than a side of the sealing ring close to the PCB board.

[0011] The beneficial effects of this solution are as follows: due to the setting of the positioning block, the positioning and installation of the sealing ring can be facilitated. At the same time, since the side of the positioning block close to the PCB board is lower than the side of the sealing ring close to the PCB board, the positioning block will not contact the PCB board, so that the positioning block will not squeeze the PCB board, making the PCB board less likely to deform, and the photosensitive imaging chip on the PCB board less likely to shift, thereby ensuring image resolution.

[0012] Furthermore, the fastener is a fastening bolt.

[0013] The beneficial effect of this solution is that by setting the fastener as a fastening bolt, the assembly efficiency of the PCB board and the lens holder can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of a sealing structure for a camera according to the utility model;

[0015] Figure 2 This is an exploded view of a sealing structure for a camera according to the utility model;

[0016] Figure 3 It is a structural schematic diagram of the cross section of the sealing ring of the utility model. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The reference numerals in the drawings of the specification include: lens mount 1, PCB board 2, sealing ring 3, mounting groove 4, threaded hole 5, fastener 6, V-groove 7, positioning block 8.

[0019] Example

[0020] like Figure 1 The sealing structure for a camera shown in the figure comprises a lens holder 1 , a PCB board 2 , and a sealing ring 3 arranged between the lens holder 1 and the PCB board 2 .

[0021] like Figure 2 As shown, a mounting groove 4 is opened on the upper side of the lens holder 1, and the sealing ring 3 is placed in the mounting groove 4. Threaded holes 5 are opened on the four corners of the upper side of the lens holder 1, and fasteners 6 are threadedly connected to the four corners of the upper side of the PCB board 2. The fasteners 6 are fastening bolts, and the fasteners 6 fix the PCB board 2 to the lens holder 1 through the threaded holes 5.

[0022] like Figure 3 As shown, the longitudinal section area of ​​the upper side of the sealing ring 3 is smaller than the longitudinal section area of ​​the lower side of the sealing ring 3, and the longitudinal section area in the middle of the sealing ring 3 is the largest. A V-shaped groove 7 is provided at the bottom of the sealing ring 3, and the acute angle formed by the two oblique sides of the V-shaped groove 7 is α, α is 60°, and the acute angle formed by the two oblique sides of the sealing ring 3 is β, β is 60°. Positioning blocks 8 are integrally formed on the four corners protruding inward of the sealing ring 3, and the upper side of the positioning blocks 8 is lower than the upper side of the sealing ring 3. It should be noted that the longitudinal section of the upper side of the sealing ring 3 refers to the upper side of the sealing ring 3, and the longitudinal section of the lower side of the sealing ring 3 refers to the lower side of the sealing ring 3.

[0023] The specific implementation process is as follows:

[0024] During assembly, the sealing ring 3 is placed in the mounting groove 4 , with the opening direction of the V-shaped groove 7 facing downward, and then the PCB board 2 is fixed on the lens holder 1 by the fastener 6 .

[0025] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A sealing structure for a camera, characterized in that: It includes a lens mount, a PCB board and a sealing ring arranged between the lens mount and the PCB board. The lens mount is provided with a mounting groove, the sealing ring is placed in the mounting groove, a V-shaped groove is provided on the side of the sealing ring close to the lens mount, and a plurality of fasteners are detachably connected on the PCB board, and the fasteners are used to fix the PCB board on the lens mount.

2. A sealing structure for a camera according to claim 1, characterized in that: The longitudinal cross-sectional area of ​​the sealing ring on the side close to the PCB board is smaller than the longitudinal cross-sectional area of ​​the sealing ring on the side close to the lens mount, and the longitudinal cross-sectional area at the middle position of the sealing ring is the largest.

3. A sealing structure for a camera according to claim 2, characterized in that: The acute angle formed by the two oblique sides of the V-shaped groove is α, α is 60°, and the acute angle formed by the two oblique sides of the sealing ring is β, β is 60°.

4. A sealing structure for a camera according to claim 3, characterized in that: Positioning blocks are fixedly connected to the four corners of the sealing ring protruding inward, and a side of the positioning block close to the PCB board is lower than a side of the sealing ring close to the PCB board.

5. The sealing structure for a camera according to claim 4, characterized in that: The fasteners are fastening bolts.

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