CN111787208B

CN111787208B - Installation mechanism of camera

Info

Publication number: CN111787208B
Application number: CN202010696159.7A
Authority: CN
Inventors: 张建亮
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-09-17
Anticipated expiration: 2040-07-20
Also published as: CN111787208A

Abstract

The invention discloses a mounting mechanism of a camera. According to the invention, the first matching surface of the base and the second matching surface of the shell can have a preset deflection angle relative to the screw contact surface bearing the axial fastening force of the screw, so that the axial fastening force is decomposed at the matching part of the first matching surface and the second matching surface; the decomposed first component force can form constraint on a fit clearance between the first fit surface and the second fit surface so as to ensure the assembly accuracy of the shell and the base; the decomposed second component force can constrain the case to be close to a base surface for matching with the panel, so that when the case is mounted on the panel through the base, relative shaking between the case and the base caused by vibration from the panel is suppressed, thereby contributing to improvement of mounting reliability of the camera in a vibration environment. In addition, the screw hole of the base and the through hole of the cabinet may be inclined upward toward the outer circumferential side of the cabinet at a preset elevation angle, so as to provide a relatively wide screw mounting operation space at the outer circumference of the cabinet.

Description

Installation mechanism of camera

Technical Field

The present invention relates to a camera mounting technique, and more particularly to a camera mounting mechanism suitable for use in a vibration environment such as a vehicle.

Background

A camera typically includes a housing and a movement housed within the housing. To facilitate the mounting of the camera on the panel, the housing may be mounted to the panel by a base. Wherein the casing and the base are usually mounted by screws.

However, when the panel on which the housing and the base are placed is in a vibration environment, relative shaking occurs between the housing and the base in a direction intersecting with the axis of the screw, thereby causing the screw to loosen, resulting in a weakening of the axial fastening force in the axial direction of the screw, and consequently, a loose assembly of the housing and the base.

It can be seen that the camera is not highly reliable in mounting in a vibration environment.

Disclosure of Invention

In one embodiment, there is provided a mounting mechanism for a camera, comprising:

the base is provided with a base surface used for being matched with the panel, the base is also provided with a screw hole and a first matching surface, the screw hole is formed in the first matching surface, and a preset deflection angle is formed between the axis of the screw hole and a first direction perpendicular to the first matching surface;

the shell is provided with a shell cavity for accommodating the movement, the shell is also provided with a through hole coaxially aligned with the screw hole, a second matching surface parallel and opposite to the first matching surface and a screw contact surface for contacting with a screw penetrating through the through hole, the through hole penetrates from the screw contact surface to the second matching surface, and the preset deflection angle is formed between the axis of the through hole and a second direction perpendicular to the second matching surface;

when the screw penetrating through the through hole is in threaded fit with the screw hole, axial fastening force generated by the threaded fit on the screw is applied to the screw contact surface by the screw, the first matching surface and the second matching surface are parallel and opposite and incline relative to the screw contact surface by the preset deflection angle, so that the axial fastening force is decomposed at the matching position of the first matching surface and the second matching surface into:

a first component force that forms a constraint on a fit gap between the first fit surface and the second fit surface; and

and constraining the enclosure to a second component of force that draws toward the base surface.

Optionally, the preset declination angle makes the first component force larger than the second component force.

Optionally, the screw hole is inclined with respect to the base surface at a predetermined elevation angle, and the through hole coaxially aligned with the screw hole is inclined toward an outer peripheral side of the housing at the predetermined elevation angle.

Optionally, the preset elevation angle is greater than 15 ° and equal to or less than 40 °; the preset declination angle is greater than or equal to 15 DEG and less than the preset elevation angle.

Optionally, the base includes a mounting plate and a fitting block, the base surface is formed on one side surface of the mounting plate, the fitting block is located on the other side surface of the mounting plate, and the screw hole and the first mating surface are formed in the fitting block; the housing includes a main housing and a mounting flange, the housing cavity is formed inside the main housing, the mounting flange is located outside the main housing, and the through hole and the second mating surface and the screw contact surface are formed at the mounting flange.

Optionally, the assembling block is located at an edge of the mounting plate, the first mating surface is an outer inclined surface of the assembling block facing the outer side of the edge of the mounting plate, and the opening of the screw hole is located at the first mating surface; the assembling edge is positioned at the edge of the main shell, the second matching surface is an inner expanding surface of the assembling edge facing to the inner side of the edge of the main shell, the screw contact surface is positioned on the outer peripheral surface of the assembling edge facing to the outer side of the edge of the main shell, and the through hole penetrates through the assembling edge from the screw contact surface to the second matching surface; wherein the screw hole is inclined with respect to the base surface at a predetermined elevation angle, and the through hole coaxially aligned with the screw hole is inclined toward the outer peripheral side of the housing at the predetermined elevation angle.

Optionally, the preset elevation angle is greater than 15 ° and equal to or less than 40 °; the preset deflection angle is larger than or equal to 15 degrees and smaller than or equal to the difference value between the preset elevation angle and the preset process angle.

Optionally, a plurality of the assembling blocks are distributed in pairs in a mirror image mode at the edges of two opposite sides of the mounting plate; the assembling edges equal to the assembling blocks are distributed at the edges of two opposite sides of the main shell in pairs in a mirror image mode.

Optionally, the housing includes a decorative rim at an edge of the main housing, wherein the decorative rim is connected with the mounting rim to form a closed shelter for the mounting block along the edge of the main housing.

Optionally, the outer periphery of the fitting rim facing the outside of the rim of the main housing further has a decorative groove for receiving a nut for shielding the screw.

Based on the above embodiment, the first mating surface of the base and the second mating surface of the housing may have a preset off angle with respect to a screw contact surface that receives an axial fastening force of the screw, the preset off angle may cause the axial fastening force to be resolved at a mating portion of the first mating surface and the second mating surface; the decomposed first component force can form constraint on a fit clearance between the first fit surface and the second fit surface so as to ensure the assembly accuracy of the shell and the base; moreover, the second component force obtained by decomposition can constrain the casing to be close to the base surface matched with the panel, so that when the casing is arranged on the panel through the base, the relative shaking caused by the vibration from the panel between the casing and the base is inhibited, the risk of screw loosening can be reduced, and the mounting reliability of the camera under the vibration environment is improved.

In addition, the screw hole of the base and the through hole of the casing may be tilted upward toward the outer peripheral side of the casing at a predetermined tilt angle with respect to the base surface, so that a relatively wide screw mounting operation space can be provided at the outer periphery of the casing.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention:

FIG. 1 is an exploded view of a mounting mechanism for a camera in accordance with an embodiment of the present invention;

FIG. 2 is a perspective view of the base of the mounting mechanism shown in FIG. 1;

FIG. 3 is a cross-sectional view of the base of the mounting mechanism shown in FIG. 1;

FIG. 4 is a top perspective view of the housing of the mounting mechanism shown in FIG. 1;

FIG. 5 is a bottom perspective view of the housing of the mounting mechanism shown in FIG. 1;

FIG. 6 is a cross-sectional view of the housing of the mounting mechanism shown in FIG. 1;

FIG. 7 is a cross-sectional view of the assembled state of the mounting mechanism shown in FIG. 1;

FIG. 8 is a cross-sectional view of the mounting mechanism shown in FIG. 1 mounted to a mounting panel in an assembled state.

Description of the reference numerals

10 base

100 base plane

11 mounting plate

12 assembling block

120 screw hole

121 first mating face

122 reaming groove

20 casing

200 shell cavity

21 main casing

22 mounting flange

221 second mating face

222 screw contact surface

23 decorative edge

24 decorative groove

25 convex rib

30 screw

31 screw

32 nut

80 tool

90 panel

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples.

FIG. 1 is an exploded view of a mounting mechanism for a camera in accordance with an embodiment of the present invention. Referring to fig. 1, in this embodiment, the mounting mechanism of the camera includes a base 10 and a housing 20, wherein the housing 20 can be mounted to a panel 90 through the base 10, and the panel 90 can be disposed in a vibrating environment (e.g., vehicle mounted).

FIG. 2 is a perspective view of the base of the mounting mechanism shown in FIG. 1. FIG. 3 is a cross-sectional view of the base of the mounting mechanism shown in FIG. 1. Referring to fig. 1 in conjunction with fig. 2 and 3, the base 10 may have a base surface 100 (labeled in fig. 3) for cooperating with the panel 90, and the base 10 may further have a screw hole 120 and a first cooperating surface 121.

For example, the base 10 may include a mounting plate 11 and a mounting block 12.

A base surface 100 is formed on one side surface of the mounting plate 11 (the bottom surface below the mounting plate 11 is shown as an example in the figure), and the pitch angle of the base 10 can be kept consistent with the support angle of the panel 90 by the cooperation of the base surface 100 and the panel 90, that is, the pitch angle of the base 10 is restricted to the support angle of the panel 90, and the pitch angle of the base can be adjusted by replacing the panel 90 with a different support angle;

the mounting plate 11 may be opened with a mounting hole 13 for assembling with the panel 90, wherein the mounting hole 13 may be opened at a position aligned with the fixing hole 900 of the panel 90 for the nail 40 to pass through the mounting hole 13 to be fixed in the fixing hole 900, and the mounting hole 13 may be a long hole bent in a circular arc shape so that the base 10 may have a mounting adjustment margin with respect to the panning angle of the panel 90.

The fitting block 12 may be located on the other side surface of the mounting plate 11 (the top surface above the mounting plate 11 is illustrated as an example), and a screw hole 120 and a first mating surface 121 may be formed in the fitting block 12, wherein an opening of the screw hole 120 may be formed in the first mating surface 121, and the opening of the screw hole 120 is illustrated as an example as a reaming groove 122.

FIG. 4 is a top perspective view of the housing of the mounting mechanism shown in FIG. 1. FIG. 5 is a bottom perspective view of the housing of the mounting mechanism shown in FIG. 1. FIG. 6 is a cross-sectional view of the housing of the mounting mechanism shown in FIG. 1. Referring to fig. 1 in conjunction with fig. 4 to 6, the housing 20 may have a housing cavity 200 (labeled in fig. 6) for accommodating the movement, and the housing 20 may further have a through hole 220 for coaxially aligning with the screw hole 120 (the inner diameter of the through hole 220 may be the same as or substantially the same as the inner diameter of the counterbore 122 of the screw hole 120), a second mating surface 221 for facing the first mating surface 121 in parallel, and a screw contact surface 222 for contacting the screw 30 passing through the through hole 220.

For example, the housing 20 may include a main housing 21 (which may be assembled from a housing base 21a and a housing cover 21 b) and a mounting rim 22. The housing cavity 200 may be formed inside the main housing 21, the mounting rim 22 may be located outside the main housing 21 (outside the housing seat 21a), and the through hole 220 and the second mating face 221 and the screw contact face 222 are formed at the mounting rim 22. The through hole 220 may penetrate through the mounting flange 22 between the screw contact surface 222 and the screw contact surface 222, and accordingly, an opening of the through hole 220 facing the screw hole 120 may be formed on the second mating surface 221, and an opening of the through hole 220 facing away from the screw hole 120 may be formed on the screw contact surface 222.

FIG. 7 is a cross-sectional view of the assembled state of the mounting mechanism shown in FIG. 1. FIG. 8 is a cross-sectional view of the mounting mechanism shown in FIG. 1 mounted to a mounting panel in an assembled state. Referring to fig. 7 and 8, when the screw 30 (the threaded rod 31) inserted into the through hole 220 is threadedly engaged with the threaded hole 120, an axial fastening force F0 generated by the screw 30 due to the threaded engagement of the screw 30 (the threaded rod 31) with the threaded hole 120 is applied to the screw contact surface 222 by the screw 30 (the nut 32), and the first mating surface 121 and the second mating surface 221 facing in parallel have a predetermined offset angle β with respect to the screw contact surface 222, which causes the axial fastening force F0 to be resolved at the engagement between the first mating surface 121 and the second mating surface 221 as follows:

a first component force F1 that forms a constraint on the mating gap between the first mating surface 121 and the second mating surface 221; and

the housing 20 is constrained to a second component force F2 that draws toward the base 100.

Based on the above embodiment:

the first component force F1 resolved by the axial fastening force F0 may form a constraint on the fit clearance between the first fit surface 121 and the second fit surface 221 (for example, the fit clearance may be constrained within a range of 0.05mm to 0.15 mm) to ensure the assembly accuracy of the housing 20 and the base 10; and the number of the first and second electrodes,

the second component F2 resolved from the axial fastening force F0 can restrain the casing 20 close to the base surface 100 of the base 10 for engaging with the panel 90, so as to suppress relative shaking between the casing 20 and the base 10 due to vibration from the panel 90 (for example, a vehicle-mounted panel) when the casing 20 is mounted on the panel 90 through the base 10, thereby reducing the risk of loosening of the screw 30 due to the relative shaking, and further contributing to improvement of the mounting reliability of the camera in a vibrating environment.

Alternatively, since the first component force F1 is more focused on the same action as the axial fastening force F0, the preset deviation angle β may be set to an angle value at which the first component force F1 is greater than the second component force F2.

In addition, the screw hole 120 of the base 10 may be inclined with respect to the base surface 100 at a preset elevation angle α, and the through hole 220 of the screw hole 120 of the base 10 may be inclined upward toward the outer circumferential side of the casing 20 at the preset elevation angle α with respect to the base surface 100, that is, the axis of the screw hole 120 of the base 10 and the through hole 220 of the casing 20, which are coaxially aligned, may be inclined upward toward the outer circumferential side of the casing 20 at the preset elevation angle α with respect to the base surface 100, to provide a relatively wide screw mounting operation space at the outer circumference of the casing 20. The screw installation operation space may be an operation space required for using a tool 80 (e.g., a screwdriver) to insert the screw 30 through the through hole 220 and screw the screw hole 120; the allowance is relative to the operating space where the screw hole 120 and the through hole 220 are parallel to the base surface 100, which may easily cause the tool 80 to be obstructed by the panel 90.

For example, in the structure examples shown in fig. 1 to 8:

the fitting block 12 of the base 10 may be located at an edge of the mounting plate 11, the first mating face 121 may be an outer slope of the fitting block 12 facing the outside of the edge of the mounting plate 11, and the opening of the screw hole 120 is located at the first mating face 121 facing the outside of the edge of the mounting plate 11 (the axis of the screw hole 120 is not perpendicular to the first mating face 121);

the fitting rim 22 of the housing case 20 is located at the edge of the main case 21 (the case seat 21a), the second mating face 221 is an inwardly-expanded face of the fitting rim 22 toward the inside of the edge of the main case 21 (the case seat 21a), the screw contact face 222 is located at the outer peripheral face of the fitting rim 22 toward the outside of the edge of the main case 21, and the through hole 220 penetrates the fitting rim 22 from the screw contact face 222 to the second mating face 221 (the axis of the through hole 220 is not perpendicular to the second mating face 221, and may be perpendicular to the screw contact face 222);

the screw hole 120 of the base 10 is inclined with respect to the base 100 at a predetermined angle α, so that the screw hole 120 and the axis of the through hole 220 of the housing 20 coaxially aligned therewith are inclined toward the outer peripheral side of the housing 20 at the predetermined angle α.

As a preferred solution, the preset elevation angle α may be greater than 15 ° and equal to or less than 40 °, when the screw hole 120 and the through hole 220 are tilted upward toward the outer peripheral side of the housing 20 at a predetermined angle of elevation alpha, the parallel facing first mating surface 121 and the second mating surface 221 have a predetermined offset angle beta with respect to the screw contact surface 222 that may be greater than or equal to 15 deg. and less than a predetermined elevation angle alpha, for example, the preset deviation angle β may be greater than or equal to 15 ° and less than or equal to the difference between the preset elevation angle α and the preset process angle, in the case where the base 10 or the housing 20 (housing seat 21a) is formed by molding with a mold, the predetermined process angle may be a draft angle of the first mating surface 121 (the outer bevel of the mounting block 12) or the second mating surface 221 (the inner flared surface of the mounting rim 22), the draft angle may be set in the range of 2 ° to 4 °, and preferably may be set to 3 °.

In the exemplary structure shown in fig. 1 to 8, a plurality of (four as an example in the figure) assembling blocks 12 are distributed in pairs at the edges of two opposite sides of the mounting plate 11, and the assembling edges 22 equal to the number of the assembling blocks 12 are distributed in pairs at the edges of two opposite sides of the main housing 21, in this case, a plurality of assembling points of the first matching surface 121 and the second matching surface 221 as described above may be formed between the housing case 20 and the base 10, so as to facilitate the force balance of the assembling. Also, in the case that a plurality of the mounting rims 22 are distributed in pairs at the edges of the opposite sides of the main housing 21, a rib 25 may be further provided between each pair of the mounting rims 22 to increase the strength of the mounting rims 22.

It will be understood that the number of the mounting blocks 12 and the mounting flange 22 is plural in order to obtain the above-mentioned effect of force balance, but in actual design, the number of the mounting blocks 12 and the mounting flange 22 may be at least one.

As can be seen from fig. 1 and 4 to 8, the housing 20 may further include a decorative rim 23 located at an edge of the main housing 21, wherein the decorative rim 23 is connected with the mounting rim 22 to form a closed shelter for the mounting block 12 along the edge of the main housing 21. The thickness of the decoration rim 23 may be smaller than that of the fitting rim 22, and the outer circumferential surface of the decoration rim 23 may be flush with the outer circumferential surface of the main housing 21 to ensure beauty, i.e., the fitting rim 22 protrudes inward of the outer circumferential edge of the main housing 21 with respect to the decoration rim 23.

As can also be seen from fig. 1 and 4 to 8, the outer peripheral surface of the mounting rim 22 facing the outside of the rim of the main housing 21 may further have a decorative groove 24 for receiving a blind nut 32. The opening size L0 of the decorative groove 24 may be (D0+ w0)/cos α, D0 is the outer diameter of the nut 32, and w0 is the radial redundancy compensation size (e.g., 0.8mm to 1.2 mm).

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A mounting mechanism for a camera, comprising:

the base (10) is provided with a base surface (100) used for being matched with the panel (90), the base (10) is further provided with a screw hole (120) and a first matching surface (121), the screw hole (120) is arranged on the first matching surface (121), and a preset deflection angle is formed between the axis of the screw hole (120) and a first direction perpendicular to the first matching surface (121);

the machine shell (20), the machine shell (20) is provided with a shell cavity (200) for accommodating a movement, the machine shell (20) is further provided with a through hole (220) coaxially aligned with the screw hole (120), a second matching surface (221) parallel and opposite to the first matching surface (121), and a screw contact surface (222) for contacting with a screw (30) penetrating through the through hole (220), the through hole (220) penetrates from the screw contact surface (222) to the second matching surface (221), and the preset deflection angle is formed between the axis of the through hole (220) and a second direction perpendicular to the second matching surface (221);

wherein, when the screw (30) threaded through the through hole (220) is threadedly engaged with the screw hole (120), an axial fastening force generated by the threaded engagement on the screw (30) is applied to the screw contact surface (222) by the screw (30), the first engagement surface (121) and the second engagement surface (221) are parallel and face each other and are inclined with respect to the screw contact surface (222) by the preset off angle, so that the axial fastening force is resolved at the engagement portion of the first engagement surface (121) and the second engagement surface (221) into:

a first force component that constrains a mating gap between the first mating face (121) and the second mating face (221); and

constraining the enclosure (20) to a second force component that draws toward the base surface (100).

2. The mounting mechanism of claim 1 wherein the predetermined bias angle causes the first component force to be greater than the second component force.

3. The mounting mechanism according to claim 1, wherein the screw hole (120) is inclined with respect to the base surface (100) at a preset elevation angle, and the through hole (220) coaxially aligned with the screw hole (120) is inclined with respect to an outer peripheral side of the housing (20) at the preset elevation angle.

4. The mounting mechanism of claim 3,

the preset elevation angle is greater than 15 degrees and less than or equal to 40 degrees;

the preset declination angle is greater than or equal to 15 DEG and less than the preset elevation angle.

5. The mounting mechanism of claim 1,

the base (10) comprises a mounting disc (11) and a mounting block (12), the base surface (100) is formed on one side surface of the mounting disc (11), the mounting block (12) is positioned on the other side surface of the mounting disc (11), and the screw hole (120) and the first mating surface (121) are formed on the mounting block (12);

the housing (20) includes a main housing (21) and a mounting rim (22), the housing cavity (200) is formed inside the main housing (21), the mounting rim (22) is located outside the main housing (21), and the through hole (220) and the second mating face (221) and the screw contact face (222) are formed at the mounting rim (22).

6. The mounting mechanism of claim 5,

the assembling block (12) is positioned at the edge of the mounting disc (11), the first matching surface (121) is an outer inclined surface of the assembling block (12) facing the outer side of the edge of the mounting disc (11), and the opening of the screw hole (120) is positioned on the first matching surface (121);

the assembling rim (22) is positioned at the edge of the main shell (21), the second matching surface (221) is an inner expanding surface of the assembling rim (22) facing the inner side of the edge of the main shell (21), the screw contact surface (222) is positioned at the outer peripheral surface of the assembling rim (22) facing the outer side of the edge of the main shell (21), and the through hole (220) penetrates through the assembling rim (22) from the screw contact surface (222) to the second matching surface (221);

the screw hole (120) is inclined relative to the base surface (100) at a preset elevation angle, and the through hole (220) coaxially aligned with the screw hole (120) is inclined towards the outer peripheral side of the machine shell (20) at the preset elevation angle.

7. The mounting mechanism of claim 6,

the preset deflection angle is larger than or equal to 15 degrees and smaller than or equal to the difference value between the preset elevation angle and the preset process angle.

8. The mounting mechanism of claim 6,

a plurality of the assembling blocks (12) are distributed at the edges of two opposite sides of the mounting plate (11) in pairs in a mirror image manner;

the mounting rims (22) equal in number to the mounting blocks (12) are arranged in pairs in a mirror image at the edges of the opposite sides of the main housing (21).

9. The mounting mechanism of claim 6, wherein the housing (20) includes a trim rim (23) at an edge of the main housing (21), wherein the trim rim (23) and the mounting rim (22) are connected to form a closed curtain of the mounting block (12) along the edge of the main housing (21).

10. The mounting mechanism of claim 6 wherein the peripheral surface of the mounting rim (22) outward of the rim of the main housing (21) further has a decorative groove (24) for receiving a nut (32) that conceals the screw (30).