CN108613783B - Camera gas tightness testing arrangement - Google Patents
Camera gas tightness testing arrangement Download PDFInfo
- Publication number
- CN108613783B CN108613783B CN201810634371.3A CN201810634371A CN108613783B CN 108613783 B CN108613783 B CN 108613783B CN 201810634371 A CN201810634371 A CN 201810634371A CN 108613783 B CN108613783 B CN 108613783B
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- cavity
- camera
- tightness testing
- push rod
- testing device
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- 238000012360 testing method Methods 0.000 title claims abstract description 63
- 238000003466 welding Methods 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 34
- 230000000903 blocking effect Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a camera air tightness testing device, which comprises a lens, a shell, an end cover, a wire harness and a welding seam welded between the shell and the end cover, wherein the lens, the shell, the end cover, the wire harness and the welding seam are sequentially connected. According to the camera air tightness testing device, the volume of the testing cavity (namely the first cavity) is greatly reduced, the testing time is shortened, the testing efficiency is improved, and the testing cost is reduced; whether the air tightness of the camera is good can be accurately tested, and the testing precision is improved.
Description
Technical Field
The invention relates to a camera air tightness testing device.
Background
When the camera is assembled, the shell and the end cover are welded with each other generally through a welding technology, and the tightness of the welding seam is directly related to the tightness of the whole camera.
The existing gas tightness jig for testing the camera is generally used for integrally wrapping the camera in a testing cavity, then introducing high-pressure gas into the testing cavity, detecting the change of the gas pressure in the testing cavity and further obtaining the leakage value of the camera. Firstly, the whole camera needs to be placed in a test cavity, and the camera contains a wire harness, so that the test cavity is oversized, the test time is overlong, the test cost is higher, and the test efficiency is lower; secondly, if the tightness of the welding seam is not high, high-pressure gas leaks into the camera through the welding seam, and after the air pressure in the camera is stable, the leakage value of the camera cannot be truly tested, and the testing precision is seriously affected.
Disclosure of Invention
The invention aims to provide a camera air tightness testing device which is small in testing cavity, short in testing time and high in testing precision.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a camera gas tightness testing arrangement, the camera include the camera lens that connects gradually, casing, end cover, pencil, weld locate the casing with weld between the end cover, the device includes the base, set up in be used for placing in the base the camera lens with the first cavity of casing, set up in the base with the second cavity that is used for placing of first cavity intercommunication the end cover, the weld is arranged in the first cavity, the device still include the ring support in the second cavity inboard week portion with seal between the end cover outside week portion, set up in the base with the test gas circuit of first cavity intercommunication, the seal is used for separating first cavity and outside air, the camera is inside to be passed through pencil and outside air intercommunication.
Preferably, the sealing member is an elastic sealing ring which is annularly arranged on the inner peripheral part of the second cavity, and the device further comprises a movable member which is vertically movably arranged in the second cavity and one end of which is abutted against the end part of the elastic sealing ring, and a driving mechanism for driving the movable member to compress the elastic sealing ring on the end cover.
More preferably, the device further comprises a blocking part arranged in the second cavity and used for preventing the elastic sealing ring from being pressed into the first cavity, and the blocking part and the movable part are respectively arranged at two ends of the elastic sealing ring.
More preferably, the movable part comprises a cylinder body arranged in the second cavity in a surrounding manner and an extension part arranged outside the cylinder body, a through hole penetrated by the extension part is formed in the side part of the base, and the extension part is movably arranged in the through hole along the vertical direction.
More preferably, the driving mechanism comprises a base, a cylinder body fixedly arranged on the base, and a push rod vertically movably penetrating in the cylinder body along the length extension direction of the push rod, and the extending end of the push rod is used for propping against the other end of the movable piece.
Still further preferably, the driving mechanism further includes a pressing block connected to the protruding end of the push rod and used for pressing the movable member, and the pressing block is provided with a first opening for allowing the wire harness to pass out.
Still further preferably, the movable member is provided with a second opening for being matched with the first opening to allow the wire harness to pass out.
Still further preferably, the driving mechanism further comprises a guide shaft penetrating the base in an up-and-down movable manner, and a connecting piece with one end connected to the guide shaft, and the other end of the connecting piece is respectively connected with the push rod and the pressing block.
Still further preferably, the push rod, the movable member and the elastic sealing ring are sequentially distributed from top to bottom along a vertical direction, and the second cavity is located above the first cavity.
Still further preferably, the push rod, the movable member and the elastic sealing ring are sequentially distributed from bottom to top along a vertical direction, and the second cavity is located below the first cavity.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: according to the camera air tightness testing device, only one end of the camera with the welding seam is placed into the testing cavity (namely the first cavity), so that the volume of the testing cavity is greatly reduced, the testing time is shortened, the testing efficiency is improved, and meanwhile, the testing cost is reduced; make inside pencil and the outside air intercommunication that passes through of camera, even if test time is longer, reveal to inside the camera through the welding seam with high-pressure gas, but because inside and the outside air intercommunication of camera, high-pressure gas can keep revealing always, the atmospheric pressure of the high-pressure gas that can't keep filling in the test cavity, whether the gas tightness of test that consequently can be accurate is good, improves the precision of test.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the apparatus of the present invention;
fig. 3 is a schematic structural diagram of the camera.
Wherein: 1. a lens; 2. a housing; 3. an end cap; 4. a wire harness; 5. welding seams; 6. a base; 61. a through hole; 7. a first cavity; 8. a second cavity; 9. a seal; 10. testing an air path; 11. a movable member; 111. a cylinder; 112. an extension; 113. a second opening; 12. a blocking portion; 13. a base; 14. a cylinder; 15. a push rod; 16. briquetting; 161. a first opening; 17. a guide shaft; 18. and a connecting piece.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
Referring to fig. 1-3, the camera comprises a lens 1, a housing 2, an end cover 3, a wire harness 4, and a welding seam 5 welded between the housing 2 and the end cover 3, which are sequentially connected, and the device is used for testing whether the welding seam 5 is sealed or not.
The camera air tightness testing device comprises a base 6, a first cavity 7 arranged in the base 6 and used for placing the lens 1 and the shell 2, and a second cavity 8 arranged in the base 6 and communicated with the first cavity 7 and used for placing the end cover 3, wherein the welding seam 5 is positioned in the first cavity 7. The camera air tightness testing device further comprises a sealing piece 9 which is abutted against the position between the inner side peripheral part of the second cavity 8 and the outer side peripheral part of the end cover 3, and a testing air circuit 10 which is arranged in the base 6 and is communicated with the first cavity 7. The test gas circuit 10 is used for introducing high-pressure gas into the first cavity 7; the sealing member 9 is used for separating the first cavity 7 from the outside air, so that the first cavity 7 is kept in a sealed state; the inside of the camera is communicated with the outside air through the wire harness 4.
In the present embodiment, the seal 9 is an elastic seal ring which is annularly provided on the inner peripheral portion of the second chamber 8. The camera air tightness testing device further comprises a movable piece 11 which is arranged in the second cavity 8 and one end of which is abutted against the end part of the elastic sealing ring, and a driving mechanism which is used for driving the movable piece 11 to extrude and compress the elastic sealing ring on the end cover 3, and by arranging the driving mechanism, seamless abutting between the elastic sealing ring and the inner side periphery of the second cavity 8 and the outer side periphery of the end cover 3 can be ensured, namely, the tightness of the first cavity 7 is ensured.
In this embodiment, the driving mechanism includes a base 13, a cylinder 14 fixed on the base 13, and a push rod 15 penetrating the cylinder 14 and moving up and down along the extending direction of the length of the push rod. The protruding end of the push rod 15 is used to press against the other end of the movable member 11. In the present embodiment, the push rods 15 are distributed in the vertical direction, and the movable member 11 is given pressure to press the elastic seal ring by the push rods 15.
In this embodiment, the push rod 15, the movable member 11, and the elastic sealing ring are sequentially distributed from top to bottom along the vertical direction, and the second cavity 8 is located above the first cavity 7. In another embodiment, the push rod 15, the movable member 11 and the elastic sealing ring are sequentially distributed from bottom to top along the vertical direction, and the second cavity 8 is located below the first cavity 7. The specific setting can be selected according to actual needs.
In this embodiment, the camera air tightness testing device further comprises a blocking portion 12 disposed in the second cavity 8 for preventing the elastic sealing ring from being pressed into the first cavity 7. The blocking part 12 and the movable part 11 are respectively arranged at two ends of the elastic sealing ring, namely, the blocking part 12 is propped against the lower end of the elastic sealing ring, and the movable part 11 is propped against the upper end of the elastic sealing ring. By this arrangement, the problem of the elastic sealing ring being pressed into the first cavity 7, the compression at the weld 5 leading to a test result being prone to error can be avoided.
In this embodiment, the movable member 11 includes a cylinder 111 disposed around the second cavity 8, and an extension portion 112 disposed outside the cylinder 111, the side portion of the base 6 is provided with a through hole 61 through which the extension portion 112 passes, the extension portion 112 is movably disposed in the through hole 61 along a vertical direction, and the extension portion 112 is distributed along a horizontal direction. With this arrangement, first, the up-and-down movement of the movable member 11 is guided by the extension 112 and the through hole 61; secondly, when the driving mechanism is uncontrollable, the downward movement of the movable piece 11 is limited through the through hole 61, so that the push rod 15 can be prevented from being extruded downwards all the time to damage the camera in the test.
Obviously, the elastic sealing ring and the cylinder 111 are hollow structures, so that the camera can smoothly pass through when being put into the base 6.
In this embodiment, the driving mechanism further includes a pressing block 16 connected to the protruding end of the push rod 15 for pressing the upper end of the movable member 11, and the pressing block 16 is provided with a first opening 161 for allowing the wire harness 4 to pass through. Meanwhile, the movable member 11 is provided with a second opening 113 for being matched with the first opening 161 to allow the wire harness 4 to pass out, and the second opening 113 is located right below the first opening 161. With this arrangement, the wire harness 4 can be prevented from being crushed at the time of testing.
In this embodiment, the driving mechanism further includes a guiding shaft 17 penetrating the base 13 and moving up and down, and a connecting piece 18 with one end connected to the guiding shaft 17, and the other end of the connecting piece 18 is connected to the push rod 15 and the pressing block 16 respectively. In this embodiment, the guide shafts 17 and the push rods 15 are parallel to each other and are all distributed in the vertical direction; the push rod 15 is connected to the upper surface of the connecting piece 18, and the pressing block 16 is connected to the lower surface of the connecting piece 18.
The working procedure of this embodiment is specifically described below:
during testing, firstly, placing a camera into a base 6 in a downward direction of a lens 1, and enabling a welding line 5 to be positioned in a first cavity 7; then, the push rod 15 is driven to move downwards, the pressing block 16 connected to the extending end of the push rod 15 is propped against the movable piece 11, and the elastic sealing ring is extruded by the movable piece 11, so that the elastic sealing ring is propped between the second cavity 8 and the end cover 3 after being extruded; finally, high-pressure air is introduced into the first cavity 7 through the test air channel 10, the real-time pressure in the first cavity 7 is tested, and whether the air tightness of the tested camera is good is determined through the test result.
The above embodiments are provided to illustrate the technical concept and features of the present invention and are intended to enable those skilled in the art to understand the content of the present invention and implement the same, and are not intended to limit the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.
Claims (10)
1. The utility model provides a camera gas tightness testing arrangement, the camera include lens, casing, end cover, pencil, the welding seam of welding between locating the casing with the end cover that connects gradually, its characterized in that: the device comprises a base, a first cavity, a second cavity, a welding seam, a sealing piece and a test air channel, wherein the first cavity is arranged in the base and is used for placing the lens and the shell, the second cavity is arranged in the base and is communicated with the first cavity and is used for placing the end cover, the welding seam is positioned in the first cavity, the sealing piece is abutted to the periphery of the inner side of the second cavity and the periphery of the outer side of the end cover, the test air channel is arranged in the base and is communicated with the first cavity, the sealing piece is used for separating the first cavity from outside air, the inside of the camera is communicated with the outside air through the wire harness, and the test air channel is used for introducing high-pressure air into the first cavity.
2. The camera air tightness testing device according to claim 1, wherein: the sealing element is an elastic sealing ring which is arranged on the periphery of the inner side of the second cavity in a surrounding mode, the device further comprises a movable element which is arranged in the second cavity in a vertically movable mode and one end of the movable element is abutted to the end portion of the elastic sealing ring, and a driving mechanism used for driving the movable element to compress the elastic sealing ring on the end cover.
3. The camera air tightness testing device according to claim 2, wherein: the device further comprises a blocking part which is arranged in the second cavity and used for preventing the elastic sealing ring from being pressed into the first cavity, and the blocking part and the movable part are respectively arranged at two ends of the elastic sealing ring.
4. The camera air tightness testing device according to claim 2, wherein: the movable piece comprises a cylinder body arranged in the second cavity in a surrounding mode and an extension part arranged on the outer side of the cylinder body, a through hole penetrated by the extension part is formed in the side part of the base, and the extension part is movably arranged in the through hole along the vertical direction.
5. The camera air tightness testing device according to claim 2, wherein: the driving mechanism comprises a machine base, a cylinder body fixedly arranged on the machine base and a push rod vertically movably penetrating in the cylinder body along the length extension direction of the push rod, and the extending end of the push rod is used for propping against the other end of the movable piece.
6. The camera air tightness testing device according to claim 5, wherein: the driving mechanism further comprises a pressing block which is connected to the extending end of the push rod and used for propping against the movable piece, and a first opening used for allowing the wire harness to penetrate out is formed in the pressing block.
7. The camera air tightness testing device according to claim 6, wherein: the movable piece is provided with a second opening which is matched with the first opening and is used for enabling the wire harness to penetrate out.
8. The camera air tightness testing device according to claim 6, wherein: the driving mechanism further comprises a guide shaft which is vertically movably arranged in the machine base in a penetrating mode, and a connecting piece, one end of the connecting piece is connected to the guide shaft, and the other end of the connecting piece is connected with the push rod and the pressing block respectively.
9. The camera air tightness testing device according to claim 5, wherein: the push rod, the movable piece and the elastic sealing ring are sequentially distributed from top to bottom along the vertical direction, and the second cavity is located above the first cavity.
10. The camera air tightness testing device according to claim 5, wherein: the push rod, the movable piece and the elastic sealing ring are sequentially distributed from bottom to top along the vertical direction, and the second cavity is located below the first cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810634371.3A CN108613783B (en) | 2018-06-20 | 2018-06-20 | Camera gas tightness testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810634371.3A CN108613783B (en) | 2018-06-20 | 2018-06-20 | Camera gas tightness testing arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN108613783A CN108613783A (en) | 2018-10-02 |
| CN108613783B true CN108613783B (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810634371.3A Active CN108613783B (en) | 2018-06-20 | 2018-06-20 | Camera gas tightness testing arrangement |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490091A (en) * | 2018-12-12 | 2019-03-19 | 科堡科技（江苏）有限公司 | Static pressure and impact testing device for intelligent toilet lid |
| CN110895178A (en) * | 2019-11-27 | 2020-03-20 | 广东金弘达自动化科技股份有限公司 | Camera gas tightness testing arrangement |
| CN113008499B (en) * | 2021-02-19 | 2021-12-28 | 云阳县龙市初级中学 | Test method of school monitoring camera |
| CN116730000B (en) * | 2023-08-16 | 2023-10-20 | 苏州英维特精密机械有限公司 | Charging and discharging equipment for camera wire harness airtight test |
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