CN212932713U - Test fixture of chip is discerned to fingerprint - Google Patents
Test fixture of chip is discerned to fingerprint Download PDFInfo
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- CN212932713U CN212932713U CN202021977831.1U CN202021977831U CN212932713U CN 212932713 U CN212932713 U CN 212932713U CN 202021977831 U CN202021977831 U CN 202021977831U CN 212932713 U CN212932713 U CN 212932713U
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Abstract
The utility model discloses a test fixture of chip is discerned to fingerprint, including the test fixture seat, the upper end of test fixture seat is equipped with test chip trench, be equipped with the test chip extension board in the test chip trench, the interior bottom fixedly connected with piston barrel of test chip trench, sliding connection has first piston in the piston barrel, fixedly connected with spring between the interior bottom of first piston and piston barrel, install the centre gripping gasbag in the annular mounting groove, the front side of test fixture seat is equipped with the piston groove, the notch inner wall fixedly connected with seal block in piston groove, the piston groove is linked together with piston barrel and centre gripping gasbag, just be equipped with in the piston groove and fill gassing mechanism. The utility model discloses it is rational in infrastructure, when can carrying out the centre gripping to the chip, make it be difficult for breaking away from test chip trench to stability when guaranteeing the test, and conveniently take out the chip, the operation is simple and convenient more, improves the efficiency to the chip test greatly.
Description
Technical Field
The utility model relates to a chip test auxiliary assembly technical field especially relates to a chip's test fixture is discerned to fingerprint.
Background
The prior art discloses a test fixture of a fingerprint identification chip with application number CN201920739264.7, which comprises a test fixture upper cover, a test fixture base, a test chip slot position, a fingerprint identification hole and a rotating screw; one end of the test fixture upper cover is connected with one end of the test fixture base through a rotating screw, so that the test fixture upper cover can be turned over and opened and covered on the test fixture base through the rotating screw; the fingerprint identification hole is arranged in the middle of the upper cover of the test fixture and penetrates through the upper cover of the test fixture, the test chip slot is sunken in the middle of the base of the test fixture, and the fingerprint identification chip is embedded in the base of the test fixture through the test chip slot.
The above-mentioned patent weak point lies in, all need rotate the test fixture upper cover when it tests at every turn to rotate the realization locking or unblock to the test fixture hasp, it is comparatively inconvenient to operate, has reduced the efficiency to the chip test, and puts the chip in test chip trench after, inconvenient taking out, bring inconvenience for the tester, therefore we have designed the test fixture of a fingerprint identification chip and have solved above problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the test fixture of chip is discerned to fingerprint that proposes, when it can carry out the centre gripping to the chip, make it be difficult for breaking away from the test chip trench to stability when guaranteeing the test, and conveniently take out the chip, the operation is simple and convenient more, improves the efficiency to the chip test greatly.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a test fixture for fingerprint identification chip comprises a test fixture seat, a test chip slot is arranged at the upper end of the test fixture seat, a test chip support plate is arranged in the test chip groove position, the inner bottom of the test chip groove position is fixedly connected with a piston cylinder, a first piston is connected in the piston cylinder in a sliding way, a spring is fixedly connected between the first piston and the inner bottom of the piston cylinder, the upper end of the first piston is fixedly connected with a piston rod, the upper end of the piston rod is fixedly connected with the bottom of the test chip support plate, the inner wall of the test chip slot is provided with an annular mounting groove, a clamping air bag is arranged in the annular mounting groove, a piston groove is arranged at the front side of the test fixture seat, a sealing block is fixedly connected with the inner wall of the notch of the piston groove, the piston groove is communicated with the piston cylinder and the clamping air bag, and an inflation and deflation mechanism is arranged in the piston groove.
Preferably, the test chip support plate and the test chip slot are the same in shape, and the outer wall of the test chip support plate does not abut against the inner wall of the test chip slot.
Preferably, the piston cylinder communicates with the front side of the piston groove through a first connection pipe.
Preferably, the clamping bladder is connected to a rear side of the piston groove by a second connection pipe.
Preferably, the inflation and deflation mechanism comprises a second piston which is in sliding connection with the inner wall of the piston groove, one surface of the second piston, which is opposite to the sealing block, is fixedly connected with a T-shaped rod, the T-shaped rod penetrates through the sealing block and is in sliding connection with the sealing block, a first magnetic block is fixedly connected in the second piston, one surface of the piston groove, which is far away from the sealing block, is fixedly connected with a second magnetic block, and the magnetic poles of the second magnetic block, which are opposite to the magnetic poles of the first magnetic block, are opposite.
Preferably, the inner wall of the piston groove is provided with a limiting ring which is abutted against the second piston, and the T-shaped rod penetrates through the limiting ring.
Compared with the prior art, the utility model, its beneficial effect does:
the chip can be moved to the test chip slot position by pushing the T-shaped rod, the chip is automatically clamped, the chip is not clamped any more by pushing the T-shaped rod, and the chip can be supported, so that a worker can conveniently take out the tested chip; compared with the prior art, the operation is simpler and faster, the chip cannot be damaged, the test chip can be conveniently taken out by the worker, and the efficiency of chip testing is greatly improved.
To sum up, the utility model discloses rational in infrastructure, when can carry out the centre gripping to the chip, make it be difficult for breaking away from test chip trench to stability when guaranteeing the test, and conveniently take out the chip, the operation is simple and convenient more, improves the efficiency to chip test greatly.
Drawings
Fig. 1 is a schematic structural view of a test fixture for a fingerprint identification chip according to the present invention;
fig. 2 is a cross-sectional view of a partial structure in a test fixture for a fingerprint identification chip.
In the figure: the test fixture comprises a test fixture seat 1, a test chip slot seat 2, a piston cylinder 3, a first connecting pipe 4, a piston groove 5, an annular mounting groove 6, a test chip support plate 7, a piston rod 8, a first piston 9, a clamping air bag 10, a second connecting pipe 11, a second magnetic block 12, a second piston 13, a first magnetic block 14, a T-shaped rod 15, a sealing block 16, a limiting ring 17 and a spring 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, a test fixture for a fingerprint identification chip comprises a test fixture seat 1, a test chip slot 2 is arranged at the upper end of the test fixture seat 1, a test chip support plate 7 is arranged in the test chip slot 2, the test chip support plate 7 and the test chip slot 2 are the same in shape, the outer wall of the test chip support plate 7 is not abutted against the inner wall of the test chip slot 2, and the test chip support plate 7 is used for supporting the fingerprint identification chip; the interior bottom fixedly connected with piston cylinder 3 of test chip trench 2, sliding connection has first piston 9 in the piston cylinder 3, fixedly connected with spring 18 between the interior bottom of first piston 9 and piston cylinder 3, the upper end fixedly connected with piston rod 8 of first piston 9, the upper end of piston rod 8 and the bottom fixed connection of test chip extension board 7.
An annular mounting groove 6 is formed in the inner wall of the test chip groove 2, a clamping air bag 10 is mounted in the annular mounting groove 6, and the clamping air bag 10 is used for clamping a fingerprint identification chip; a piston groove 5 is arranged on the front side of the test fixture seat 1, a sealing block 16 is fixedly connected with the inner wall of a notch of the piston groove 5, the piston groove 5 is communicated with a piston cylinder 3 and a clamping air bag 10, and the piston cylinder 3 is communicated with the front side of the piston groove 5 through a first connecting pipe 4; the holding airbag 10 is connected to the rear side of the piston groove 5 by a second connection tube 11.
And the piston slot 5 is internally provided with an air inflation and deflation mechanism, the air inflation and deflation mechanism comprises a second piston 13 which is in sliding connection with the inner wall of the piston slot 5, one surface of the second piston 13, which is opposite to the sealing block 16, is fixedly connected with a T-shaped rod 15, the T-shaped rod 15 penetrates through the sealing block 16 and is in sliding connection with the sealing block, a first magnetic block 14 is fixedly connected in the second piston 13, one surface of the piston slot 5, which is far away from the sealing block 16, is fixedly connected with a second magnetic block 12, the magnetic pole polarity of the surface, which is opposite to the first magnetic block 14, of the second magnetic block 12 is opposite to that of the first magnetic block 14, a limiting ring 17 which is abutted against the second piston 13 is installed on the inner wall of the piston slot 5, the T-shaped rod 15.
When the utility model is used, the fingerprint identification chip is placed in the test chip slot position 2, the chip is propped against the test chip support plate 7 at the moment, then the worker manually pushes the T-shaped rod 15 until the T-shaped rod cannot move, the second piston 13 is propped against the second magnetic block 12 at the moment, and the first magnetic block 14 and the second magnetic block 12 are attracted mutually because the polarities of the magnetic poles of the opposite surfaces of the first magnetic block 14 and the second magnetic block 12 are opposite; when the second piston 13 moves, negative pressure is generated between the second piston 13 and the sealing block 16, so that gas in the piston cylinder 3 can be sucked into the piston groove 5 between the second piston 13 and the sealing block 16, the first piston 9 drives the piston rod 8 and the test chip support plate 7 to move downwards, the chip moves downwards, at the moment, the spring 18 is compressed and cannot be compressed again, and the chip is in a static state; when the second piston 13 moves towards the direction of the second magnetic block 12, the air of the part is extruded into the clamping air bag 10 through the second connecting pipe 11, the clamping air bag 10 is expanded, so that the chip can be clamped, the second piston 13 is abutted against the second magnetic block 12 at the moment, the second piston 13 can be positioned through the attraction of the first magnetic block 14 and the second magnetic block 12, the second piston 13 is not easy to reset, and the worker can directly perform the fingerprint identification function test on the chip.
After the test, the staff can manually stimulate T type pole 15 until unable removal, second piston 13 offsets with spacing ring 17 this moment, then the air in centre gripping gasbag 10 gets into piston groove 5 once more, then the air in the piston groove 5 is extruded in the piston section of thick bamboo 3 through first connecting pipe 4, then first piston 9, piston rod 8, test chip extension board 7 and chip rebound, thereby can hold up the chip, make things convenient for the staff to take out the chip, and is comparatively convenient and fast, and the efficiency of the test is improved.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A test fixture for a fingerprint identification chip comprises a test fixture seat (1) and is characterized in that a test chip slot (2) is arranged at the upper end of the test fixture seat (1), a test chip support plate (7) is arranged in the test chip slot (2), a piston cylinder (3) is fixedly connected to the inner bottom of the test chip slot (2), a first piston (9) is connected in the piston cylinder (3) in a sliding manner, a spring (18) is fixedly connected between the first piston (9) and the inner bottom of the piston cylinder (3), a piston rod (8) is fixedly connected to the upper end of the first piston (9), the upper end of the piston rod (8) is fixedly connected with the bottom of the test chip support plate (7), an annular mounting groove (6) is formed in the inner wall of the test chip slot (2), and a clamping air bag (10) is installed in the annular mounting groove (6), the front side of test fixture seat (1) is equipped with piston groove (5), the notch inner wall fixedly connected with sealing block (16) of piston groove (5), piston groove (5) are linked together with piston cylinder (3) and centre gripping gasbag (10), just be equipped with in piston groove (5) and fill gassing mechanism.
2. The test fixture of the fingerprint identification chip of claim 1, wherein the test chip support plate (7) and the test chip slot (2) have the same shape, and the outer wall of the test chip support plate (7) does not abut against the inner wall of the test chip slot (2).
3. The fixture for testing a fingerprint chip of claim 1, wherein the piston cylinder (3) is communicated with the front side of the piston groove (5) through the first connecting pipe (4).
4. The test fixture of fingerprint identification chip of claim 1, wherein said holding air bag (10) is connected to the rear side of the piston groove (5) through a second connecting tube (11).
5. The test fixture of the fingerprint identification chip of claim 1, wherein the air inflation and deflation mechanism comprises a second piston (13) slidably connected with the inner wall of the piston groove (5), a T-shaped rod (15) is fixedly connected to the surface of the second piston (13) opposite to the sealing block (16), the T-shaped rod (15) penetrates through the sealing block (16) and is slidably connected with the sealing block, a first magnetic block (14) is fixedly connected in the second piston (13), a second magnetic block (12) is fixedly connected to the surface of the piston groove (5) far away from the sealing block (16), and the magnetic poles of the surface of the second magnetic block (12) opposite to the first magnetic block (14) are opposite.
6. The test fixture of the fingerprint identification chip according to claim 5, wherein a limiting ring (17) abutting against the second piston (13) is installed on the inner wall of the piston groove (5), and the T-shaped rod (15) is disposed through the limiting ring (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021977831.1U CN212932713U (en) | 2020-09-11 | 2020-09-11 | Test fixture of chip is discerned to fingerprint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021977831.1U CN212932713U (en) | 2020-09-11 | 2020-09-11 | Test fixture of chip is discerned to fingerprint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212932713U true CN212932713U (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021977831.1U Expired - Fee Related CN212932713U (en) | 2020-09-11 | 2020-09-11 | Test fixture of chip is discerned to fingerprint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212932713U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251976A (en) * | 2021-06-30 | 2021-08-13 | 苏师大半导体材料与设备研究院(邳州)有限公司 | Silicon wafer overall dimension detection tool and detection method |
-
2020
- 2020-09-11 CN CN202021977831.1U patent/CN212932713U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113251976A (en) * | 2021-06-30 | 2021-08-13 | 苏师大半导体材料与设备研究院(邳州)有限公司 | Silicon wafer overall dimension detection tool and detection method |
| CN113251976B (en) * | 2021-06-30 | 2021-09-24 | 苏师大半导体材料与设备研究院(邳州)有限公司 | Silicon wafer overall dimension detection tool and detection method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210409 Termination date: 20210911 |
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| CF01 | Termination of patent right due to non-payment of annual fee |