CN209673356U - A kind of automobile controller test fixture - Google Patents
A kind of automobile controller test fixture Download PDFInfo
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- CN209673356U CN209673356U CN201920687348.0U CN201920687348U CN209673356U CN 209673356 U CN209673356 U CN 209673356U CN 201920687348 U CN201920687348 U CN 201920687348U CN 209673356 U CN209673356 U CN 209673356U
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- 230000005540 biological transmission Effects 0.000 claims description 3
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Abstract
The utility model discloses a kind of automobile controller test fixture, including base, upper frame, measuring head and test board, upper frame can move back and forth in the vertical direction；It is connected with one or more adjustable shelf along horizontal X to reciprocating motion on upper frame, is connected with one or more measuring head moved back and forth along horizontal Y-direction on each adjustable shelf；The measuring head includes fixed frame, the compression bar for being movably connected on the fixed frame top and the mandril for being movably connected on the fixed frame lower part；It is fixed with support plate on compression bar, is placed with weights in support plate；The bottom of the mandril is fixed with pressure sensor；Test board is fixed on the working face of the base by elevating lever.The utility model can accurately control the size of loading force by weights, to guarantee the precision of test, and the activity setting of mandril and compression bar avoids the hard collision with test block surface, substantially reduces the damage to test block surface.
Description
Technical field
The utility model relates to test fixture technical field more particularly to a kind of automobile controller test fixtures.
Background technique
With the development of Domestic Automotive Industry, the improvement of people's living standards, automobile has come into huge numbers of families, to automobile
Demand constantly rise, pursue comfort level and aesthetics while the quality and security performance of automobile are proposed it is higher
It is required that.Automobile panel switch button be appliance component important in automobile interior trim one of, the direct shadow of quality of performance
Ring the quality and performance for arriving vehicle.Therefore, in automotive electronics manufacturing process, car panel button switch is surveyed by bonding force
Examination, to judge whether key switch performance and all technical reach code requirement.
Earliest test method is to add the method for manual pull and push dynamometer by simple tooling, is carried out in the method for artificial observation
Test.The method of this manual testing is by artificial observation precision, and the testing time is long, and the conclusion tested can not also protect
Card.In order to solve this problem, occur the test device that mechanical structure is connected with electrical system in the prior art, pass through pressure
Sensor real-time detection presses the size of bonding force, improves measuring accuracy, the used time is shorter.But it is in the prior art by bonding force test
The measuring head of device is fixed measuring head, and dynamics is larger when push button, larger to the loss of button, and can not be slowly increased
By bonding force size, therefore can not accurately test out critical by bonding force size, the reduction of test result precision.For this purpose, how to design one
It is the skill for needing to solve at present that kind, which can be slowly increased and press bonding force and avoid the test fixture of measuring head and button hard collision,
Art problem.
Utility model content
Technical problem to be solved by the utility model is: in order to solve button switch key force test device in the prior art
Dynamics is larger when push button, larger to the loss of button, and can not be slowly increased by bonding force size, can not accurately test out and face
Boundary is pressed the technical issues of bonding force size, and the utility model provides a kind of automobile controller test fixture to solve the above problems.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of automobile controller test fixture, packet
Base is included, the upper surface of the base is working face；Upper frame, the upper frame are located above the base, and can be in vertical side
It moves back and forth upwards；One or more adjustable shelf along horizontal X to reciprocating motion, each work are connected on upper frame
One or more measuring head moved back and forth along horizontal Y-direction is connected in moving frame；The measuring head includes fixed frame, work
The dynamic compression bar for being connected to the fixed frame top and the mandril for being movably connected on the fixed frame lower part；It is fixed on the compression bar
Support plate is placed with the weights being slidably connected with the compression bar in support plate；The bottom of the mandril is fixed with pressure biography
Sensor, the pressure sensor are electrically connected with PCL controller, and the compression bar passes the load transmission of weights to the pressure
Sensor；Test board is fixed on the working face of the base by elevating lever, and is located at below the measuring head of the upper frame, institute
Stating elevating lever drives the test board to move up and down, and the test board is equipped with the grip device for clamping test part.
Measuring head can move freely in three axis directions in the utility model, and the press member on measuring head is that activity connects
The compression bar and mandril connect is changed into the flexibility with certain buffer function by hard collision when pressure sensor presses to test block and touches
It hits, damage to test block when reducing test, and pressure size can change by adjusting weights, without under adjustment
The fine tuning by bonding force may be implemented in voltage-frequency rate, and faster, precision is higher for test speed.
Preferably, the upper frame is connected to above the base by cylinder, drives upper frame lower fortune on the whole by cylinder
It is dynamic, so that measuring head be made constantly to press test block.
Further, the front side of the base is equipped with display panel and control panel, and the control panel is equipped with key,
To the PCL controller, data are shown on display panel the pressure sensor transmitting data by the PCL controller, real
Existing automatic operation, improves test speed and precision.
Further, the compression bar runs through the top center of the fixed frame, and the mandril runs through the bottom of the fixed frame
Portion center is respectively and fixedly provided on the compression bar and mandril and limits the compression bar and mandril deviates from the stop collar of the fixed frame, described
Support plate and weights are respectively positioned on the top of the fixed frame, and when squeezing the pressure sensor, the mandril can be with
The compression bar contact.
Further, the grip device includes being located at the embedding hole of the test board upper surface and being connected on the embedding hole
Cleat assembly.Embedding hole, which is arranged, can according to need any position that cleat assembly is fixed on to test board upper surface, test block
It is clamped by cleat assembly.
Further, the cleat assembly is mirror image, including fixing seat, adjusting rod and adjustable splint are described
Fixing seat is fixed on embedding hole, and adjusting rod passes through the fixing seat and is threadedly coupled with the fixing seat, and the adjustable splint is solid
Due to the end of the adjusting rod, test block is located between two adjustable splints positioned opposite.
Preferably, the two sides of the upper frame are equipped with X-axis regulating tank, and slide bar, the work are fixed in the X-axis regulating tank
Moving frame both ends are slidably connected on the slide bar, adjustable shelf both ends be provided with threaded rod for being against the slide bar surface and
For rotating the adjustment knob of the threaded rod；The adjustable shelf is equipped with the Y-axis regulating tank penetrated through vertically, and the fixed frame is sliding
It is dynamic to be connected in the Y-axis regulating tank.
Further, several guide rods through the test plate surface are further fixed at the top of the base, it is each described
Lantern ring is slidably connected on guide rod, the lantern ring is fixedly connected with the test board.
Preferably, the bottom thread of the mandril is connected with adjustment cap, and the pressure sensor is fixed on the adjustment cap
Bottom, the pressure sensor bottom are also connected with rubber contact.
Preferably, the guide rod screw top is connected with spacing head, and the spacing head is located above the test board, limit
Cushion block is provided on potential head.Test board is avoided to collide with upper frame or measuring head.
The beneficial effects of the utility model are:
(1) automobile controller test fixture described in the utility model, by upper frame, fixed frame, compression bar, weights and
The design of mandril makes the device when carrying out fatigue strength test to test block, can accurately control loading force by weights
Size, to guarantee the precision of test, and the activity setting of mandril and compression bar avoids the hard collision with test block surface, greatly
The big damage reduced to test block surface.
(2) the utility model is by the matching design of X-axis regulating tank, Y-axis regulating tank and elevating lever, then when meeting test
Three-shaft displacement demand, improves the freedom degree of the device, then improves the practicability and versatility of the device.
(3) for the utility model by the program setting of automation, it is low to solve traditional test device testing efficiency, automation
The problem of degree is low and test result can not accurately guarantee.
(4) the utility model being equipped with by grip device and embedding hole realizes the quick of test block and precisely fixed
Position is fixed.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the perspective view of the specific embodiment of automobile controller test fixture described in the utility model；
A kind of structural schematic diagram of automobile controller test fixture；
Fig. 2 is the main view of the specific embodiment of automobile controller test fixture described in the utility model；
Fig. 3 is the top view of the specific embodiment of automobile controller test fixture described in the utility model；
Fig. 4 is the side view of the specific embodiment of automobile controller test fixture described in the utility model；
Fig. 5 is that the structure of fixed frame in the specific embodiment of automobile controller test fixture described in the utility model is shown
It is intended to；
Fig. 6 is the structural representation of upper frame in the specific embodiment of automobile controller test fixture described in the utility model
Figure.
In figure, 1- base, 2- mounting plate, 3- guide rod, 4- cylinder, 5- elevating lever, 6- test board, 7- lantern ring, the embedding hole 8-,
9- cleat assembly, 91- fixing seat, 92- adjusting rod, 93- adjustable splint, 10- upper frame, 11-X axis regulating tank, 12- slide bar, 13- are living
Moving frame, 14-Y axis regulating tank, 15- fixed frame, 16- compression bar, 17- mandril, 18- stop collar, 19- support plate, 20- weights,
21- adjustment cap, 22- pressure sensor, 23- rubber contact, 24- threaded rod, 25- adjust knob, 26- spacing head, 27- display surface
Plate, 28- control panel, 29- wing nut.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " on ", "lower", " preceding ", "vertical", "horizontal" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connection "
It shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For the common of this field
For technical staff, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.In addition, practical new at this
In the description of type, unless otherwise indicated, the meaning of " plurality " is two or more.
Embodiment 1, a kind of automobile controller test fixture, including base 1, the upper surface of base 1 are working face.Upper frame
10, the upper frame 10 is located at 1 top of base, and can move back and forth in the vertical direction, for driving upper frame 10 in vertical side
The structure moved back and forth upwards can be but not limited to cylinder 4 or other mechanisms that can be moved back and forth with stable frequency, this
Four 4 arrays of cylinder connecting in embodiment with upper frame 10 are fixed on the top of base 1, and when setup test, cylinder 4 is opened, gas
Cylinder 4 is reciprocating, and cylinder 4 moves up and down in overall with upper frame 10, and measuring head constantly presses test block at the same time.
One or more adjustable shelf 13 along horizontal X to reciprocating motion, each adjustable shelf are connected on upper frame 10
One or more measuring head moved back and forth along horizontal Y-direction is connected on 13；The measuring head includes fixed frame 15, lives
The dynamic compression bar 16 for being connected to 15 top of fixed frame and the mandril 17 for being movably connected on 15 lower part of fixed frame；Branch is fixed on compression bar 16
Support plate 19 is placed with the weights 20 being slidably connected with compression bar 16 in support plate 19, and weights 20 can be replaced；Top
The bottom of bar 17 is fixed with pressure sensor 22, and pressure sensor 22 is electrically connected with PCL controller, and compression bar 16 is by weights 20
Load transmission to pressure sensor 22；Test board 6 is fixed on the working face of base 1 by elevating lever 5, and is located at upper frame
Below 10 measuring head, elevating lever 5 drives test board 6 to move up and down, and test board 6 is equipped with to be filled for the fixture of clamping test part
It sets.The specific structure of grip device are as follows: including the cleat assembly for being located at the embedding hole 8 of 6 upper surface of test board and being connected on embedding hole 8
9, test block is clamped by cleat assembly 9.
Adjustable shelf 13 drive measuring head along horizontal X to move, measuring head moves in adjustable shelf 13 along horizontal Y-direction, lifting
Bar 5 is for adjusting vertical direction distance of the test board 6 relative to measuring head, so that three axis directions of the measuring head realized freely are adjusted
Section.Weights 20 are placed in support plate 19, model LC204E, the PCL control of pressure sensor 22 in the present embodiment
Device model comings PCL-002.In the top center and mandril 17 of compression bar 16 and fixed frame 15 and the bottom of fixed frame 15
The heart can be frictional connection, in the case where not by external force between compression bar 16 and fixed frame 15 and mandril 17 and fixed frame 15 it
Between the relative position that can be kept fixed.
Preferably, the front side of base 1 is equipped with display panel 27 and control panel 28, control panel 28, which is provided with, to be used for
Multiple keys of the tooling are manipulated, the pressure sensor 22 transmits data to the PCL controller, cylinder 4 and PLC control
Data are shown on display panel 27 by device electrical connection processed, the PCL controller.
The specific embodiment of the present embodiment are as follows: before test, test block is placed on test board 6, while passing through fixture
Component and the Le Gaoshi structure in embedding hole 8 are fixed and clamp to test block, after fixed, adjust the position of measuring head, upper frame 10
Two sides be equipped with X-axis regulating tank 11, slide bar 12 is fixed in X-axis regulating tank 11,13 both ends of adjustable shelf are slidably connected at slide bar
On 12, adjustable shelf 13 can slide on X-axis regulating tank 11 and slide bar 12, and 13 both ends of adjustable shelf are provided with for being against 12 table of slide bar
The threaded rod 24 in face and adjustment knob 25 for rotating threaded rod 24, adjustment knob 25 are adjusted for locking adjustable shelf 13
Knob 25 is set to the outside of adjustable shelf 13；Adjustable shelf 13 is equipped with the Y-axis regulating tank 14 penetrated through vertically, and the sliding of fixed frame 15 connects
It connects in Y-axis regulating tank 14, fixed frame 15 can slide in Y-axis regulating tank 14, and butterfly spiral shell can be arranged on the outside of fixed frame 15
Mother 29, rotation wing nut 29 are against 13 surface of adjustable shelf and realize that the position of fixed frame 15 is fixed.Pass through elevating lever 5 and survey simultaneously
The cooperation of test plate (panel) 6 meets three-shaft displacement demand when test, by three-shaft displacement, keeps measuring head and institute to be tested by key mapping
One-to-one correspondence is set, before test, accurately controls the load of test by changing weights 20, when test, inside base 1
PLC controller and control panel 28 control cylinder 4 and move, cylinder 4 is working in reciprocating mode state, while base 1 is internally provided with
Counting device can set testing time by control panel 28, and cylinder 4 drives measuring head to move back and forth, when pressure sensor 22
When contacting with test block, mandril 17 is jacked up, until jacking up compression bar 16, compression bar 16 gives the weight transmitting of weights 20 at this time
Mandril 17, pressure sensor 22 detects pressure signal, and transmits signals to PLC controller, is finally shown in display panel
On 27.When pressure sensor 22 and test block contact, pressure sensor 22 is moved in the drive of mandril 17 has what is moved upwards to become
Gesture, so as to avoid the hard collision with test block, while the pressure that test block surface is subject to is gradually increased, and can accurately be measured and be faced
Boundary's key force value.
Preferably, compression bar 16 runs through the top center of fixed frame 15, mandril 17 runs through the bottom centre of fixed frame 15,
It is respectively and fixedly provided with limitation compression bar 16 on compression bar 16 and mandril 17 and mandril 17 deviates from the stop collar 18 of fixed frame 15, support plate 19 and matches
Weight counterweight 20 is respectively positioned on the top of fixed frame 15.Support plate 19 is directly placed at 15 top of fixed frame, passes through the stop collar of lower part
18 and top support plate 19 limit compression bar 16 rising extreme position and falling-threshold position, pass through 18 He of stop collar on top
The pressure sensor 22 of lower part limits the falling-threshold position of mandril 17 and rises extreme position, to avoid compression bar 16 and mandril
17 abjection fixed frames 15, while support plate 19 and pressure sensor 22 being avoided to fall into fixed frame 15.
Preferably, the cleat assembly 9 is mirror image, including fixing seat 91, adjusting rod 92 and adjustable clamp
Plate 93, fixing seat 91 are fixed on embedding hole 8, and adjusting rod 92 passes through fixing seat 91 and is threadedly coupled with fixing seat 91, adjustable splint
93 are fixed on the end of adjusting rod 92, and test block is located between two adjustable splints 93 positioned opposite, fixing seat 91 with it is embedding
Hole 8 is Le Gaoshi fixed structure.
Embodiment 2 is further fixed on several guiding through 6 surface of test board on the basis of embodiment 1 at the top of base 1
Bar 3 slidably connects lantern ring 7 on each guide rod 3, and lantern ring 7 is fixedly connected with test board 6.Elevating lever 5 is located at test board 6
Bottom centre, elevating lever 5 are the prior art, can be commercially available, and the lifting action of elevating lever 5 usually requires motor drive, by leading
Test board 6 is supported to bar 3, it is possible to reduce the quantity of elevating lever 5, lantern ring 7 can be generated to avoid 6 inner surface of test board by friction
Loss.
Embodiment 3, on the basis of embodiment 1 or embodiment 2, the bottom thread of mandril 17 is connected with adjustment cap 21,
Pressure sensor 22 is fixed on 21 bottom of adjustment cap, adjustment cap 21 for changing mandril 17 and adjustment cap 21 overall length, from
And changing distance of the pressure sensor 22 with respect to compression bar 16,22 bottom of pressure sensor is also connected with rubber contact 23, drops
The low damage to test block.
Preferably, 3 screw top of guide rod is connected with spacing head 26, spacing head 26 is located at 6 top of test board, limit
Cushion block is provided on first 26.Test board 6 is avoided to collide with upper frame 10 or measuring head.
Preferably, the upper surface of base 1 is further fixed on mounting plate 2, upper frame 10 and test board 6 are both connected to mounting plate
On 2.Since base 1 is internally provided with power equipment, mounting surface is transferred to 2 upper surface of mounting plate by 1 upper surface of base, it can be with
The installation exercise frequency for reducing 1 surface of base, avoids having an impact power equipment.
The utility model structure is simple, and measuring accuracy is high, it is only necessary to which multiple groups fatigue strength can be carried out by replacing weights 20
Test, the requirement to power-equipment reduce.
In the present specification, identical embodiment is not necessarily referring to the schematic representation of the term.Moreover, description
Particular features, structures, materials, or characteristics can be combined in any suitable manner in any one or more embodiments.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technical idea completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to its technology is determined according to scope of the claims
Property range.
Claims (10)
1. a kind of automobile controller test fixture characterized by comprising
Base (1), the upper surface of the base (1) are working face；
Upper frame (10), the upper frame (10) is located above the base (1), and can move back and forth in the vertical direction；Upper frame
(10) one or more adjustable shelf (13) along horizontal X to reciprocating motion, each adjustable shelf (13) are connected on
On be connected with one or more measuring head moved back and forth along horizontal Y-direction；
The measuring head includes fixed frame (15), the compression bar (16) for being movably connected on the fixed frame (15) top and is flexibly connected
Mandril (17) in the fixed frame (15) lower part；It is fixed with support plate (19) on the compression bar (16), support plate is put on (19)
It is equipped with the weights (20) being slidably connected with the compression bar (16)；The bottom of the mandril (17) is fixed with pressure sensor
(22), the pressure sensor (22) is electrically connected with PCL controller, and the compression bar (16) is by the load transmission of weights (20)
To the pressure sensor (22)；
Test board (6) is fixed on the working face of the base (1) by elevating lever (5), and is located at the survey of the upper frame (10)
It tries below head, the elevating lever (5) drives the test board (6) to move up and down, and the test board (6) is equipped with surveys for clamping
The grip device of test specimen.
2. automobile controller test fixture according to claim 1, it is characterised in that: the upper frame (10) passes through cylinder
(4) it is connected to above the base (1).
3. automobile controller test fixture according to claim 2, it is characterised in that: the front side of the base (1) is equipped with
Display panel (27) and control panel (28), the control panel (28) are equipped with key, pressure sensor (22) transmitting
Data are shown on display panel (27) by data to the PCL controller, the PCL controller.
4. automobile controller test fixture according to claim 1, it is characterised in that: the compression bar (16) is through described solid
Determine the top center of frame (15), the mandril (17) runs through the bottom centre of the fixed frame (15), the compression bar (16) and top
The stop collar (18) for limiting the compression bar (16) and mandril (17) the abjection fixed frame (15) is respectively and fixedly provided on bar (17), it is described
Support plate (19) and weights (20) are respectively positioned on the top of the fixed frame (15), when the extruding pressure sensor (22)
When, the mandril (17) can contact with the compression bar (16).
5. automobile controller test fixture according to claim 1, it is characterised in that: the grip device includes being located at institute
The cleat assembly (9) stating the embedding hole (8) of test board (6) upper surface and being connected on the embedding hole (8).
6. automobile controller test fixture according to claim 5, it is characterised in that: the cleat assembly (9) is mirror image
Symmetrical structure, including fixing seat (91), adjusting rod (92) and adjustable splint (93), the fixing seat (91) are fixed on embedding hole (8)
On, adjusting rod (92) passes through the fixing seat (91) and is threadedly coupled with the fixing seat (91), and the adjustable splint (93) is solid
Due to the end of the adjusting rod (92), test block is located between two adjustable splints positioned opposite (93).
7. automobile controller test fixture according to claim 1, it is characterised in that: the two sides of the upper frame (10) are all provided with
Have X-axis regulating tank (11), is fixed with slide bar (12) in the X-axis regulating tank (11), adjustable shelf (13) both ends are slidably connected
On the slide bar (12), adjustable shelf (13) both ends be provided with threaded rod (24) for being against the slide bar (12) surface and
For rotating the adjustment knob (25) of the threaded rod (24)；The adjustable shelf (13) is equipped with the Y-axis regulating tank penetrated through vertically
(14), the fixed frame (15) is slidably connected in the Y-axis regulating tank (14).
8. automobile controller test fixture according to claim 1, it is characterised in that: also fixed at the top of the base (1)
There are several guide rods (3) through the test board (6) surface, slidably connect lantern ring (7) on each guide rod (3),
The lantern ring (7) is fixedly connected with the test board (6).
9. automobile controller test fixture according to claim 1, it is characterised in that: the bottom thread of the mandril (17)
It is connected with adjustment cap (21), the pressure sensor (22) is fixed on the adjustment cap (21) bottom, the pressure sensor
(22) bottom is also connected with rubber contact (23).
10. automobile controller test fixture according to claim 8, it is characterised in that: guide rod (3) screw top
It is connected with spacing head (26), the spacing head (26) is located above the test board (6), and spacing head is provided with cushion on (26)
Block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920687348.0U CN209673356U (en) | 2019-05-14 | 2019-05-14 | A kind of automobile controller test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920687348.0U CN209673356U (en) | 2019-05-14 | 2019-05-14 | A kind of automobile controller test fixture |
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| Publication Number | Publication Date |
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| CN209673356U true CN209673356U (en) | 2019-11-22 |
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ID=68575102
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| CN201920687348.0U Active CN209673356U (en) | 2019-05-14 | 2019-05-14 | A kind of automobile controller test fixture |
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| CN (1) | CN209673356U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326115A (en) * | 2020-10-29 | 2021-02-05 | 林荣富 | Testing tool for pressure sensor and using method thereof |
| CN114894378A (en) * | 2022-04-26 | 2022-08-12 | 歌尔股份有限公司 | Extrusion test equipment and extrusion test method |
-
2019
- 2019-05-14 CN CN201920687348.0U patent/CN209673356U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326115A (en) * | 2020-10-29 | 2021-02-05 | 林荣富 | Testing tool for pressure sensor and using method thereof |
| CN114894378A (en) * | 2022-04-26 | 2022-08-12 | 歌尔股份有限公司 | Extrusion test equipment and extrusion test method |
| CN114894378B (en) * | 2022-04-26 | 2024-04-02 | 歌尔股份有限公司 | Extrusion test equipment and extrusion test method |
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Effective date of registration: 20240530 Address after: 230000 b-1018, Woye Garden commercial office building, 81 Ganquan Road, Shushan District, Hefei City, Anhui Province Patentee after: HEFEI WISDOM DRAGON MACHINERY DESIGN Co.,Ltd. Country or region after: China Address before: No.26, Mingxin Middle Road, HUTANG Town, Wujin District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU VOCATIONAL INSTITUTE OF MECHATRONIC TECHNOLOGY Country or region before: China |
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Effective date of registration: 20240614 Address after: Room 501-2, No. 5, Lane 3644, Zhongshan North Road, Putuo District, Shanghai, 200333 Patentee after: Li Donghui Country or region after: China Address before: 230000 b-1018, Woye Garden commercial office building, 81 Ganquan Road, Shushan District, Hefei City, Anhui Province Patentee before: HEFEI WISDOM DRAGON MACHINERY DESIGN Co.,Ltd. Country or region before: China |