CN212807499U

CN212807499U - Air tightness testing device for front shell of camera

Info

Publication number: CN212807499U
Application number: CN202021994506.6U
Authority: CN
Inventors: 郭勇; 于晓刚
Original assignee: Jovision Technology Co ltd
Current assignee: Jovision Technology Co ltd
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2021-03-26
Anticipated expiration: 2030-09-11

Abstract

The application discloses air tightness testing arrangement of shell before camera includes: the bearing platform comprises a bearing surface for bearing the part to be detected, and the bearing surface is provided with an inflation hole for inflating the part to be detected of the part to be detected; the side, close to the bearing surface, of the pressing piece is concave towards the interior of the pressing piece to form a cavity, the cavity is matched with the bearing surface and used for placing and sealing the piece to be detected, and the pressing piece is provided with an air leakage opening communicated with the cavity; the liquid level meter comprises an observation part, transparent glass is arranged on the periphery of the observation part, an exhaust port is arranged on the observation part and communicated with an air leakage port, a containing cavity is arranged inside the observation part and used for containing liquid, and the exhaust port is communicated with the containing cavity; and the air source is communicated with the inflation hole through a first pipeline. Through setting up observation portion, set up the gas vent and set up the mouth that loses heart on the pressfitting piece in observation portion, improved the reliability of gas tightness test, improved work efficiency, guaranteed the operating mass with rated load of gas tightness test.

Description

Air tightness testing device for front shell of camera

Technical Field

The application relates to an air tightness testing device of a front shell of a camera, and belongs to the technical field of intelligent camera production.

Background

The intelligent camera needs to carry out air tightness test on the front shell in the production process so as to guarantee the air tightness of glass adhesion and the tightness of the shell.

The air tightness testing device of the existing intelligent camera front shell mostly detects whether the air tightness of the camera front shell reaches the standard or not by setting the pressure sensor and collecting the air pressure in the camera front shell through the pressure sensor, but in the using process, the pressure sensor sometimes fails suddenly, so that the reliability of the air tightness testing device is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the application provides a device for testing the air tightness of the front shell of the camera. This air tightness testing arrangement of shell before camera through setting up the observation part to and set up the gas vent on the observation part, set up the mouth that loses heart on the pressfitting piece, judge the air tightness of shell before the camera through observing whether the liquid in the observation part produces the bubble, improved air tightness testing arrangement's reliability, improved work efficiency, guaranteed the operating quality of gas tightness test.

The utility model discloses a realize through following technical scheme:

an airtightness testing apparatus for a front case of a video camera, comprising:

the bearing platform comprises a bearing surface for bearing the piece to be detected, and an inflation hole is formed in the bearing surface and used for inflating the part to be detected of the piece to be detected;

the side, close to the bearing surface, of the pressing piece is recessed towards the interior of the pressing piece to form a cavity, the cavity is matched with the bearing surface and used for placing and sealing the piece to be detected, and an air leakage opening communicated with the cavity is formed in the pressing piece;

the observation part is provided with transparent glass at the periphery, an exhaust port is arranged on the observation part and communicated with the air leakage port, a containing cavity is arranged inside the observation part and used for containing liquid, and the exhaust port is communicated with the containing cavity;

and the air source is communicated with the inflation hole through a first pipeline.

Preferably, the air tightness testing device further comprises a pressure sensor, the pressure sensor is electrically connected with the controller, the pressure sensor is arranged in a second pipeline, the pressure sensor is used for measuring the pressure in the second pipeline, and the second pipeline is communicated with the first pipeline.

Preferably, the first pipeline comprises a first three-way connecting piece, and the first three-way connecting piece comprises a first connecting end, a second connecting end and a third connecting end;

the first connecting end is connected with the air source through a first air pressure valve;

the second connecting end is connected with the inflation hole;

the third connecting end is connected with the second pipeline.

Preferably, the device further comprises a base, the bearing table and the observation part are fixedly arranged on the upper surface of the base, a fixing frame is further arranged on the upper surface of the base, an air cylinder is fixedly arranged on the fixing frame, and a piston rod of the air cylinder is connected with one side face, far away from the bearing face, of the pressing piece.

Preferably, the first pipeline further comprises a second three-way connecting piece, and the second three-way connecting piece comprises a fourth connecting end, a fifth connecting end and a sixth connecting end;

the fourth connecting end is connected with the air source;

the fifth connecting end is connected with the air cylinder through a second air pressure valve;

the sixth connecting end is connected with the first pneumatic valve.

Preferably, a pressure regulating meter is arranged between the second three-way connecting piece and the air source.

Preferably, the airtightness testing device further comprises a warning lamp, and the warning lamp is electrically connected with the controller.

Preferably, a first silica gel pad is arranged on the bearing surface, and a first through hole communicated with the inflation hole is formed in the first silica gel pad;

and a second silica gel pad is arranged on the side wall of the cavity, and a second through hole communicated with the air leakage opening is formed in the second silica gel pad.

Preferably, a water vapor filter is provided in the first pipe, or a water vapor filter is provided in the second pipe.

Preferably, the water vapor filter is arranged between the second three-way connecting piece and the air source;

or the water vapor filter is arranged between the first three-way connecting piece and the air pressure valve;

alternatively, the water vapour filter is arranged at the inlet of the second conduit.

Preferably, handles are respectively arranged on two opposite side surfaces of the base.

Benefits that can be produced by the present application include, but are not limited to:

1. the utility model provides an air tightness testing arrangement of shell before camera through setting up the observation portion, sets up the gas vent and sets up disappointing mouthful on the pressfitting piece in the observation portion, has improved the reliability of gas tightness test, has improved work efficiency, has guaranteed the operating mass with rated load of gas tightness test.

2. The utility model provides an air tightness testing arrangement of shell before camera through setting up observation part and pressure sensor, can realize that dual judgement camera front shell leaks gas, has further improved this air tightness testing arrangement's reliability.

3. The application provides an air tightness testing arrangement of shell before camera through set up the vapor filter in first pipeline or second pipeline, can effectively filter the vapor in the gas that the air supply provided, avoids pressure sensor to meet water inefficacy, has improved this air tightness testing arrangement's reliability.

4. The utility model provides an air tightness testing arrangement of casing before camera through set up first rubber pad on the loading end, sets up the second rubber pad on the lateral wall of the cavity of pressfitting spare, leakproofness when can guaranteeing the test camera casing before, guarantees the accuracy of test result, has improved this air tightness testing arrangement's reliability.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a device for testing the air tightness of a front shell of a video camera according to an embodiment of the present application;

fig. 2 is an external structural schematic diagram of a device for testing the air tightness of a front shell of a video camera according to an embodiment of the present application;

FIG. 3 is a schematic structural view of the press part of FIG. 2;

FIG. 4 is a rear view of the structure of FIG. 2;

fig. 5 is an electrical connection diagram of a device for testing the air tightness of a front shell of a video camera according to an embodiment of the present application;

fig. 6 is a flowchart of the operation of the air tightness testing device for the front shell of the video camera according to the embodiment of the present application.

List of parts and reference numerals:

1. a bearing table; 101. a bearing surface; 102. an inflation hole; 2. a pressing part; 201. an air escape opening; 202. a cavity; 3. an observation section; 301. an exhaust port; 4. a gas source; 401. a pressure sensor; 402. a first three-way connection; 403. a first pneumatic valve; 404. a second three-way connection; 405. a second pneumatic valve; 406. a pressure regulating meter; 5. an alarm lamp; 6. a base; 7. a fixed mount; 701. a vertical rod; 702. a cross beam; 8. a cylinder; 801. a piston rod; 9. a handle; 10. a cylinder control key; 11. a pressure detection module; 12. an inflation control key; 13. a power switch; 14. 220V power interface.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

So that the manner in which the above recited objects, features and advantages of the present application can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The camera front shell of the embodiment example comprises a front shell and glass adhered to the front shell, wherein an opening is formed in one side face of the front shell, and a cavity is formed in the front shell. The main principle for testing the air tightness of the front shell of the camera is to form a sealing structure between the front shell and the air tightness testing device, inflate a cavity in the front shell and check whether air leakage occurs at the adhered position of the front shell and the glass or other positions of the front shell.

Referring to fig. 1 to 4, embodiments of the present application disclose a device for testing the air tightness of a front case of a video camera. The air tightness testing device comprises a bearing table 1, a pressing piece 2, an observation part 3 and an air source 4, wherein a bearing surface 101 is formed on the upper surface of the bearing table 1, the bearing surface 101 is used for placing a front camera shell, an opening surface of the front camera shell is placed on the bearing surface 101, an inflation hole 102 is formed in the bearing surface 101, and the inflation hole 102 is used for inflating a part to be detected (namely an inner cavity of the front camera shell) of a part to be detected; the pressing piece 2 is arranged above the bearing surface 101, a cavity 202 which is concave towards the inside of the pressing piece 2 is arranged on one side surface of the pressing piece 2 close to the bearing surface 101, the cavity 202 is matched with the bearing surface 101 and is used for pressing the piece to be detected and sealing the piece to be detected, and an air release opening 201 communicated with the cavity 202 is arranged on the pressing piece 2; transparent glass is arranged around the observation part 3, so that the condition inside the observation part 3 can be better observed, a containing cavity is arranged inside the observation part 3 and is used for containing liquid, an exhaust port 301 is arranged on the observation part 3, one end of the exhaust port 301 is communicated with an air leakage port 201, and the other end of the exhaust port 301 is communicated with the containing cavity; the gas source 4 is used for providing gas, and the gas source 4 is communicated with the inflating hole 102 through a first pipeline. Specifically, the liquid contained in the containing chamber in the observation portion 3 is preferably water.

It is understood that the height of the vent 301 provided in the observation portion 3 is lower than the liquid level of the liquid contained therein.

As an embodiment, in order to further ensure the reliability and automation of the air tightness testing device, a pressure sensor 401 may be provided, and the pressure sensor 401 is disposed in a second pipeline for measuring the pressure in the second pipeline, and the second pipeline is communicated with the first pipeline. The pressure sensor 401 is electrically connected to the controller. In order to make the test result of the airtightness testing device more direct, a warning lamp 5 is provided, the warning lamp 5 is electrically connected with the controller, and when the pressure detected by the pressure sensor 401 does not reach the predetermined pressure all the time within a certain period of time, the controller controls the warning lamp 5 to give an alarm after receiving the signal. Specifically, the first pipeline includes a first three-way connection piece 402, the first three-way connection piece 402 includes a first connection end, a second connection end, and a third connection end, the first connection end is connected with the air source through a first pneumatic valve 403, the second connection end is connected with the inflation hole 102, and the third connection end is connected with the second pipeline.

As an implementation mode, the air tightness testing device further comprises a base 6, the bearing table 1 and the observation part 3 are fixedly arranged on the upper surface of the base 6, a fixing frame 7 is further fixedly arranged on the upper surface of the base 6 close to the bearing table 1, an air cylinder 8 is fixedly arranged on the fixing frame 7, a piston rod 801 of the air cylinder 8 is connected with the upper surface of the pressing piece 2, and the pressing piece 2 compresses or releases the front shell of the camera through the expansion and contraction of the piston rod 801. In order to use the air source 4 to supply air to the air cylinder 8, a second three-way connecting piece 404 is arranged on the first pipeline, the second three-way connecting piece 404 comprises a fourth connecting end, a fifth connecting end and a sixth connecting end, the fourth connecting end is connected with the air source 4, the fifth connecting end is connected with the air cylinder 8 through a second air pressure valve 405, the sixth connecting end is connected with the first air pressure valve 403, and in order to adjust the air pressure entering the first pipeline through the air source 4, a pressure adjusting meter 406 is arranged between the fourth connecting end of the second three-way connecting piece 404 and the air source 4.

As an implementation manner, in order to further ensure the accuracy of the test of the air tightness testing device, a first silica gel pad is arranged on the bearing surface, and a first through hole communicated with the air inflation hole 102 is arranged on the first silica gel pad; a second silica gel pad is arranged on the side wall of the cavity 202 of the pressing piece 2, and a second through hole communicated with the air leakage port 201 is arranged on the second silica gel pad.

In one embodiment, since the gas of the gas source 4 may contain water vapor, and the presence of water vapor affects the sensitivity of the pressure sensor 401, a water vapor filter is provided in the first pipe or a water vapor filter is provided in the second pipe in order to improve the reliability of the operation of the pressure sensor 401. Preferably, a water vapor filter is provided between the second three-way connection 404 and the gas source 4; alternatively, the water vapor filter is provided between the first three-way connection 402 and the first pneumatic valve 403; alternatively, the water vapour filter is arranged at the inlet of the second conduit.

In one embodiment, handles 9 are provided on opposite sides of the base 6, respectively, to facilitate transportation of the air-tightness testing device.

The testing principle of the air tightness testing device of the front shell of the camera is as follows: the open end of the front camera shell is placed on the bearing surface 101, the cavity 202 of the pressing piece 2 accommodates the front camera shell, a sealing structure is formed between the front camera shell and the bearing surface 101 through the pressing action of the pressing piece 2, a sealing structure is formed between the cavity 202 of the pressing piece 2 and the outside of the front camera shell, the air source 4 is opened, the cavity inside the front camera shell is inflated through the inflation hole 102, when the tightness of the front camera shell is poor, the air inflated into the front camera shell flows out from a gap between the front camera shell and glass or other parts of the front camera shell, the outflowing air is exhausted through the air leakage port 201 on the pressing piece 2, and because the air leakage port 201 is communicated with the exhaust port 301 of the observation part 3, the air can further enter the liquid in the accommodating cavity of the observation part 3 through the exhaust port 301, bubbles can be generated in the liquid, the sealing performance of the front shell of the camera can be judged according to whether bubbles are generated in the liquid in the observation part 3; or, when the front shell of the camera has poor tightness, the pressure sensor 401 in the second pipeline always fails to reach the preset pressure within a certain time, and the controller controls the alarm 5 to alarm after receiving the signal, so that the front shell of the camera with poor tightness can be tested by the two paths.

The inside of base 6 is the cavity structure, and the inside of base 6 is used for installing or placing electrical components and power module, sets up cylinder control key 10, pressure detection module 11, inflation control key 12 and alarm lamp 5 on the surface of base 6 front end, sets up switch 13 and 220V power interface 14 on the surface of base 6 rear end. The fixing frame 7 comprises two vertical rods 701, a cross beam 702 is arranged between the two vertical rods 701, the cross beam 702 is connected with the two vertical rods 701 through bolts, and a cylinder body of the air cylinder 8 is fixed on the cross beam 702 through bolts.

Referring to fig. 5 to 6, the operation of the airtightness testing apparatus: the air source 4 is connected with the pressure regulating meter 406 through a pipeline, the air after pressure regulation through the pressure regulating meter 406 is divided into two paths through a second three-way connecting piece 404, the first path is connected with the air inlet end of a second air pressure valve 405, the air outlet end 1 of the second air pressure valve 405 is connected with the air inlet end of a throttle valve A through a pipeline, the air outlet end 2 of the second air pressure valve 405 is connected with the air inlet end of the throttle valve B through a pipeline, when an air cylinder control key 10 is started, an air valve A end controller controls the air inlet end of the second air pressure valve 405 to be communicated with the air outlet end 1 of the second air pressure valve 405, a piston rod 801 of an air cylinder 8 moves downwards, after the air cylinder control key 10 is stopped (or the timing time is reached), an air valve B end controller controls the air inlet end of the second air pressure valve 405 to be communicated with the air outlet end 2 of the second air pressure valve; the second path is connected with the air inlet end of the first air pressure valve 403, the air outlet end of the first air pressure valve 403 is connected with a first three-way connecting piece 402, after passing through the first three-way connecting piece 402, one path reaches the inflation hole 102 through the pipeline, and the other path reaches the second pipeline, when the inflation control key 12 is started, the air reaches the inflation hole 102 through the pipeline to inflate the cavity of the front shell of the camera, whether bubbles are generated in the observation part 3 or not is observed within a certain time, meanwhile, the pressure is detected through the pressure sensor 401, whether the pressure tested by the pressure sensor 401 can reach the preset pressure within a certain time or not is observed, and if the pressure cannot reach the preset pressure, the controller controls the alarm 5 to give an alarm after receiving.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An airtightness testing apparatus for a front case of a video camera, comprising:

2. The air tightness testing device of the front shell of the video camera according to claim 1, further comprising a pressure sensor electrically connected to the controller, wherein the pressure sensor is disposed in a second pipeline, the pressure sensor is configured to measure a pressure in the second pipeline, and the second pipeline is in communication with the first pipeline.

3. The air tightness testing device of the front shell of the camera according to claim 2, wherein the first pipeline comprises a first three-way connecting piece, and the first three-way connecting piece comprises a first connecting end, a second connecting end and a third connecting end;

the second connecting end is connected with the inflation hole;

the third connecting end is connected with the second pipeline.

4. The device for testing the air tightness of the front shell of the camera according to claim 3, further comprising a base, wherein the bearing table and the observation part are fixedly arranged on the upper surface of the base, a fixing frame is further arranged on the upper surface of the base, a cylinder is fixedly arranged on the fixing frame, and a piston rod of the cylinder is connected with one side surface of the pressing piece, which is far away from the bearing surface.

5. The air tightness testing device of the front shell of the camera according to claim 4, wherein the first pipeline further comprises a second three-way connecting piece, and the second three-way connecting piece comprises a fourth connecting end, a fifth connecting end and a sixth connecting end;

the fourth connecting end is connected with the air source;

the sixth connecting end is connected with the first pneumatic valve.

6. The airtightness testing apparatus for the front casing of the video camera according to claim 5, wherein a pressure-regulating gauge is provided between the second three-way connection member and the air source.

7. The airtightness testing apparatus for the front casing of a video camera according to claim 2, further comprising a warning lamp, said warning lamp being electrically connected to said controller.

8. The airtightness testing device for the front casing of the video camera according to claim 1, wherein a first silicone rubber pad is provided on the bearing surface, and a first through hole communicated with the inflation hole is provided on the first silicone rubber pad;

9. The air tightness testing device of the front shell of the video camera according to claim 2, characterized in that a water vapor filter is provided in the first pipeline, or a water vapor filter is provided in the second pipeline.

10. The airtightness testing apparatus for the front casing of a video camera according to claim 4, wherein handles are provided on opposite side surfaces of the base, respectively.