CN114993696A - A sectional fixture for EDR bench test - Google Patents
A sectional fixture for EDR bench test Download PDFInfo
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- CN114993696A CN114993696A CN202210514944.5A CN202210514944A CN114993696A CN 114993696 A CN114993696 A CN 114993696A CN 202210514944 A CN202210514944 A CN 202210514944A CN 114993696 A CN114993696 A CN 114993696A
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- 238000012360 testing method Methods 0.000 title claims abstract description 48
- 238000009434 installation Methods 0.000 abstract description 14
- 230000001105 regulatory effect Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 7
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
- G05B23/0264—Control of logging system, e.g. decision on which data to store; time-stamping measurements
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Connection Of Plates (AREA)
Abstract
The invention relates to a mounting fixture for an EDR bench test, which comprises: the base is provided with a plurality of adjusting holes; the adjusting block is inserted into the adjusting hole, can rotate relative to the adjusting hole and is provided with a limiting groove; and one end of the fixing bolt is installed in the limiting groove, the fixing bolt can slide along the extending direction of the limiting groove, and the other end of the fixing bolt is used for penetrating through the installation hole of the EDR controller and is in threaded connection with the nut. Can rotate the relative regulation hole of regulating block, adjust the extending direction of spacing groove, and then enlarged fixing bolt's control range, can satisfy the installation of the EDR controller of different specifications through one set of sectional fixture, avoided all needing to process corresponding anchor clamps at every turn experimental, reduced the test cost, improved experimental efficiency greatly.
Description
Technical Field
The invention relates to the field of automobile data recording system tests, in particular to a mounting fixture for an EDR bench test.
Background
At present, the GB 39322020 automobile event Data recording system (EDR) has been promulgated and implemented from 1 month and 1 day 2022, and EDR (event Data Recorder system) detection in the standard mainly includes three items, respectively: collision test, driving operation data test and bench test. The bench test verifies whether the triggering function, the storage frequency function, the storage coverage mechanism function and the power-off storage function of the EDR meet the standard requirements or not by applying different impact waveforms in a standard appendix D to the EDR controller through the impact table.
In the related art, in order to verify whether the functional design of the EDR system meets the standard requirements, the EDR controller is installed on an impact table through a tool clamp, and different impact waveform impact tests are carried out.
However, the size specifications of the EDR controllers of various enterprises in the industry are different, and different tool fixtures need to be installed on the test platform to realize the installation of the EDR controllers, so that the test preparation period is long, the efficiency is low, and the test cost is greatly increased.
Disclosure of Invention
The embodiment of the invention provides a mounting fixture for an EDR bench test, and aims to solve the problems that in the related art, different fixtures need to be mounted on a test platform to adapt to EDR controllers with different specifications, and the efficiency is low.
In a first aspect, there is provided a mounting fixture for EDR bench testing, comprising: the base is provided with a plurality of adjusting holes; the adjusting block is inserted into the adjusting hole, can rotate relative to the adjusting hole and is provided with a limiting groove; and one end of the fixing bolt is installed in the limiting groove, the fixing bolt can slide along the extending direction of the limiting groove, and the other end of the fixing bolt is used for penetrating through the installation hole of the EDR controller and is in threaded connection with the nut.
In some embodiments, the adjustment bore is a stepped bore comprising a first bore section and a second bore section having collinear axes, wherein an inner diameter of the first bore section is less than an inner diameter of the second bore section; the adjusting block is in a stepped shaft shape corresponding to the adjusting hole, the adjusting block comprises a first boss and a second boss, and the limiting groove is formed in the first boss; when the adjusting block is inserted into the adjusting hole, the first boss is embedded into the first hole section, and the second boss is embedded into the second hole section.
In some embodiments, the adjusting hole penetrates through the base, and the adjusting block can be detachably inserted into the adjusting hole through the second hole section; when the adjusting block is arranged in the adjusting hole, the end face of the second boss is flush with the end face of the base.
In some embodiments, the limiting groove is a T-shaped groove, and the fixing bolt is a T-shaped bolt.
In some embodiments, the number of adjustment blocks is less than or equal to the number of adjustment holes.
In some embodiments, the mounting fixture further comprises a mounting plate for securing the sensor, the mounting plate being mounted to the base.
In some embodiments, the base has a plurality of mounting sides; the mounting plate is detachably mounted on one of the mounting side surfaces.
In some embodiments, the mounting plate defines a first mounting hole and a harness hole.
In some embodiments, the limiting groove penetrates through the adjusting block, and the limiting groove is perpendicularly intersected with the axis of the adjusting block; the fixing bolt is detachably mounted in the limiting groove.
In some embodiments, the adjustment aperture is a tapered aperture; the adjusting block is of a conical structure corresponding to the adjusting hole, and the limiting groove is formed in one end of the adjusting block with the small diameter.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides an installation fixture for an EDR bench test, wherein an adjusting block is inserted into an adjusting hole and can rotate relative to the adjusting hole, a fixing bolt for fixing an EDR controller is installed in a limiting groove, when the current position of the limiting groove cannot meet the requirement of fixing the EDR controller by the fixing bolt, the adjusting block can rotate relative to the adjusting hole to adjust the extending direction of the limiting groove, and further the adjusting range of the fixing bolt is expanded.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic perspective view of a mounting fixture for EDR bench test according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of an adjusting block installed on a base according to an embodiment of the present invention;
fig. 3 is a schematic perspective view of a mounting plate according to an embodiment of the present invention;
fig. 4 is a schematic perspective view of an adjusting block according to an embodiment of the present invention;
fig. 5 is a schematic cross-sectional structural view of the base at the axial position of the adjusting hole according to the embodiment of the present invention.
In the figure:
1. a base; 101. an adjustment hole; 102. a mounting side surface; 103. a fixing hole; 104. a counter bore; 105. lightening holes; 106. a first bore section; 107. a second bore section;
2. a regulating block; 201. a limiting groove; 202. a first boss; 203. a second boss;
3. fixing the bolt;
4. mounting a plate; 401. a first mounting hole; 402. a harness hole; 403. mounting a through hole; 404. a limiting hole;
5. an EDR controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
The embodiment of the invention provides a mounting fixture for an EDR bench test, which can solve the problem that in the related art, a test platform needs to be provided with different fixtures to adapt to EDR controllers with different specifications, and the efficiency is low.
Referring to fig. 1, a mounting fixture for an EDR bench test according to an embodiment of the present invention may include: the base 1 and the base 1 can be provided with a plurality of adjusting holes 101, in the embodiment, the adjusting holes 101 are stepped holes, in other embodiments, the adjusting holes 101 can also be cylindrical holes, the base 1 is provided with four symmetrically distributed adjusting holes 101, in other embodiments, other numbers of adjusting holes 101 can be arranged, and the position relation among the adjusting holes 101 can be set according to the conventional size of the EDR controller 5; the adjusting block 2 can be inserted into the adjusting hole 101, the adjusting block 2 can rotate relative to the adjusting hole 101, the adjusting block 2 can be provided with a limiting groove 201, namely, the adjusting block 2 is attached to the inner wall of the adjusting hole 101 through the side wall, so that the adjusting block 2 can rotate relative to the adjusting hole 101, and the center of the adjusting block 2 is enabled to be overlapped with the center of the adjusting hole 101 through the attachment of the adjusting hole 101 and the adjusting block 2; and one end of the fixing bolt 3 can be installed in the limiting groove 201, the fixing bolt 3 can slide along the extending direction of the limiting groove 201, and the other end of the fixing bolt 3 is used for penetrating through the installation hole of the EDR controller 5 and is in threaded connection with the nut. Because the fixing bolt 3 is installed in the limiting groove 201, and the direction of the limiting groove 201 can be adjusted along with the rotation of the adjusting block 2, the fixing of the fixing bolt 3 can be met, and compared with the direction of the fixed limiting groove 201, the direction-adjustable limiting groove 201 enlarges the adjusting range of the fixing bolt 3, and can adapt to the installation of EDR controllers 5 with different installation sizes. When using, arrange the mounting hole of EDR controller 5 respectively in the region of different regulation holes earlier, the rotatory regulating block 2 of rethread is with the direction of adjustment spacing groove 201, the direction that makes spacing groove 201 suits with the position of mounting hole, readjust fixing bolt 3 in the position of spacing groove 201 again, make fixing bolt 3 can pass the mounting hole of EDR controller 5, realize the location to EDR controller 5 through fixing bolt 3 on a plurality of regulating blocks 2, finally, it is fixed with one side that EDR controller 5 deviates from regulating block 2 through the nut, make EDR controller 5 paste tightly in regulating block 2, realize EDR controller 5's fixed.
Referring to fig. 1, 2 and 5, preferably, the adjustment hole 101 may be a stepped hole, and the adjustment hole 101 may include a first hole segment 106 and a second hole segment 107 having collinear axes, wherein the inner diameter of the first hole segment 106 is smaller than the inner diameter of the second hole segment 107; the adjusting block 2 may be in a stepped shaft shape corresponding to the adjusting hole 101, the adjusting block 2 may include a first boss 202 and a second boss 203, and the limiting groove 201 may be opened in the first boss 202; the limiting groove 201 is communicated with the outside, when the adjusting block 2 is inserted into the adjusting hole 101, the first boss 202 can be embedded into the first hole section 106, and the second boss 203 can be embedded into the second hole section 107. That is, the adjusting hole 101 is designed to be stepped shaft-shaped, and the inner diameter of the first hole section 106 is controlled to be smaller than that of the second hole section 107, so as to prevent the second boss 203 embedded in the second hole section 107 from being separated from the first hole section 106 side, in this embodiment, the first boss 202 and the second boss 203 of the adjusting block 2 are integrated, the adjusting hole 101 is only composed of the first hole section 106 and the second hole section 107, in other embodiments, a third hole section with a smaller diameter may be further disposed between the first hole section 106 and the second hole section 107, wherein the second boss 203 and the first boss 202 are correspondingly connected through a small-sized structure, so as to prevent the first boss 202 from entering the second hole section 107, and to prevent the adjusting block 2 from being separated from the base 1 from the first hole section 106 side.
Referring to fig. 2 and 5, preferably, the adjusting hole 101 may extend through the base 1, and the adjusting block 2 may be detachably inserted into the adjusting hole 101 through the second hole segment 107; when the adjusting block 2 is mounted in the adjusting hole 101, the end surface of the second boss 203 may be flush with the end surface of the base 1. That is to say, can be by the installation of major diameter second hole section 107 one side or dismantle regulating block 2, during the use, the terminal surface that base 1 kept away from first hole section 106 one side is used for hugging closely in the relevant fixing device of test bench, in this embodiment, pass counter bore 104 and test bench threaded connection on base 1 through the bolt, realize the fixed of base 1, through the terminal surface parallel and level of the second boss 203 after will installing in the terminal surface of base 1, make the terminal surface of second boss 203 support and hold in the fixing device of test bench, regulating block 2 drops by second hole section 107 one side during the avoidance test.
Referring to fig. 1 and 4, preferably, the limiting groove 201 may be a T-shaped groove, and the fixing bolt 3 may be a T-shaped bolt. That is to say, the fixing bolt 3 is prevented from falling off from the limiting groove 201 by the matching of the T-shaped bolt and the T-shaped groove.
Referring to fig. 1 and 2, preferably, the number of the adjusting blocks 2 may be less than or equal to the number of the adjusting holes 101. That is to say, can reduce the quantity of regulating block 2 according to actual need to alleviate the quality of sectional fixture, and then improve the degree of accuracy in the EDR bench test process. In this embodiment, the base 1 is further provided with lightening holes 105 for lightening the base 1.
Referring to fig. 1, preferably, the mounting fixture may further include a mounting plate 4, the mounting plate 4 may be used to fix the sensor, and the mounting plate 4 may be mounted to the base 1. When the EDR bench test, because the sensor that different producers participated in the EDR control algorithm is different, need supply the fixed of sensor through installation mounting panel 4 on base 1 according to the relative EDR controller 5's of sensor (just bumping sensor or side impact sensor) position on the car, ensure that sensor along with EDR synchronous motion in the testing process to satisfy the test condition of EDR bench, and then fully verify whether EDR system functional design satisfies the standard requirement.
Referring to fig. 1 to 3, preferably, the base 1 may have a plurality of mounting sides 102; the mounting plate 4 is detachably mounted to one of the mounting sides 102. In this embodiment, the mounting through holes 403 of the fixing holes 103 and the mounting plate 4 are correspondingly formed in the mounting side surface 102 of the base 1, the fixing holes 103 are threaded holes, the mounting through holes 403 and the fixing holes 103 are connected through bolts in a threaded manner to detachably mount the mounting plate 4 on the mounting side surface 102, the mounting side surface 102 is arranged on each side surface of the base 1 to mount the sensors at all angles, different interface positions of different EDR controllers 5 can be adapted, and the universality of the clamp is improved. Meanwhile, as the mounting plate 4 is detachably mounted on the base 1, the mounting plate 4 is not required to be mounted in a test without using a sensor, so that the mounting steps are reduced, and the weight is reduced.
Referring to fig. 3, the mounting plate 4 may preferably be formed with a first mounting hole 401 and a harness hole 402. In this embodiment, the harness hole 402 is an oblong hole, wherein the first mounting hole 401 is used for fixing a sensor, the harness hole 402 is used for allowing a relevant harness, such as a sensor harness or an EDR controller 5 power supply harness, to pass through, the harness hole 402 is arranged to regulate the harness, so that a test is prevented from being affected by the disordered harness, and the damage of the harness due to the movement of the clamp in the test process can be reduced. In this embodiment, four first mounting holes 401 are provided to mount different sensors, and the four first mounting holes 401 are all threaded holes. Meanwhile, in this embodiment, each first mounting hole 401 is correspondingly provided with one limiting hole 404, and the limiting holes 404 in the shape of long circular holes can be matched with the first mounting holes 401 to adapt to mounting sizes of different sensors.
Referring to fig. 4, preferably, the limiting groove 201 may penetrate through the adjusting block 2, and the limiting groove 201 may perpendicularly intersect with the axis of the adjusting block 2; the fixing bolt 3 is detachably mounted in the limit groove 201. That is to say, can be by the both ends installation or the dismantlement fixing bolt 3 of spacing groove 201 through the spacing groove 201 that runs through regulating block 2, set up to intersect with regulating block 2 axis through the extending direction with spacing groove 201, can make the whole regulation hole 101 of adjusting range of fixing bolt 3 through rotatory regulating block 2, compare not intersect in the spacing groove 201 of axis, fixing bolt 3 adjusts to the axis position of regulation hole 101, fixing bolt 3's adjusting range is wider, can adapt to the installation of the EDR controller 5 of more specifications.
Preferably, the adjusting hole 101 may be a tapered hole; the adjusting block 2 can be a conical structure corresponding to the adjusting hole 101, and the limiting groove 201 can be opened at one end of the adjusting block 2 with a small diameter. That is to say, the adjusting hole 101 may also be a tapered hole outside the stepped hole, and the adjusting block 2 is set to be a tapered structure corresponding to the adjusting hole 101, so as to prevent the adjusting block 2 from being separated from the small end of the adjusting hole 101, and improve the stability of the installation of the EDR controller 5.
The principle of the mounting clamp for the EDR bench test provided by the embodiment of the invention is as follows:
the adjusting blocks 2 with proper quantity can be selected according to the fixing mode of the EDR controller 5 on the whole vehicle, the fixing bolt 3 is arranged in the limiting groove 201 of the adjusting block 2, then the adjusting block 2 is arranged in the corresponding adjusting hole 101, the fixing bolt 3 passes through the corresponding mounting hole of the EDR controller 5 by rotating the adjusting block 2 and adjusting the position of the fixing bolt 3 in the limiting groove 201, the fixing bolt 3 is connected with one end of the fixing bolt 3 extending out of the mounting hole of the EDR controller 5 by a nut and threads, the EDR controller 5 is fixed on the base 1, the base 1 is fixed with the test bench, the end surface of one side of the adjusting block 2 far away from the limiting groove 201 is abutted against the test bench, the rotation of the adjusting block 2 relative to the adjusting hole 101 is avoided, the adjusting range of the fixing bolt 3 can be greatly expanded, the installation of the EDR with various specifications is met, the corresponding clamp is prevented from being processed in each test, the test cost is reduced, the efficiency of the test is greatly improved.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A sectional fixture for EDR bench test, its characterized in that, it includes:
the device comprises a base (1), wherein a plurality of adjusting holes (101) are formed in the base (1);
the adjusting block (2) is inserted into the adjusting hole (101), the adjusting block (2) can rotate relative to the adjusting hole (101), and the adjusting block (2) is provided with a limiting groove (201);
the fixing bolt (3), the one end of fixing bolt (3) install in spacing groove (201), just fixing bolt (3) can be followed the extending direction slip of spacing groove (201), its other end is used for passing the mounting hole and the nut threaded connection of EDR controller (5).
2. The mounting fixture for EDR bench testing as claimed in claim 1, wherein:
the adjusting hole (101) is a stepped hole, the adjusting hole (101) comprises a first hole section (106) and a second hole section (107) with collinear axes, wherein the inner diameter of the first hole section (106) is smaller than that of the second hole section (107);
the adjusting block (2) is in a stepped shaft shape corresponding to the adjusting hole (101), the adjusting block (2) comprises a first boss (202) and a second boss (203), and the limiting groove (201) is formed in the first boss (202);
when the adjusting block (2) is inserted into the adjusting hole (101), the first boss (202) is embedded in the first hole section (106), and the second boss (203) is embedded in the second hole section (107).
3. The mounting fixture for EDR bench testing as claimed in claim 2, wherein:
the adjusting hole (101) penetrates through the base (1), and the adjusting block (2) can be detachably inserted into the adjusting hole (101) through the second hole section (107);
when the adjusting block (2) is arranged in the adjusting hole (101), the end face of the second boss (203) is flush with the end face of the base (1).
4. The mounting fixture for EDR bench testing as claimed in claim 1, wherein:
the limiting groove (201) is a T-shaped groove, and the fixing bolt (3) is a T-shaped bolt.
5. The mounting fixture for EDR bench testing as defined in claim 1, wherein:
the number of the adjusting blocks (2) is less than or equal to the number of the adjusting holes (101).
6. The mounting fixture for EDR bench testing as claimed in claim 1, wherein:
the mounting fixture further comprises a mounting plate (4), the mounting plate (4) is used for fixing the sensor, and the mounting plate (4) is mounted on the base (1).
7. The mounting fixture for EDR bench testing as defined in claim 6, wherein:
the base (1) has a plurality of mounting sides (102);
the mounting plate (4) is detachably mounted on one of the mounting side surfaces (102).
8. The mounting fixture for EDR bench testing as claimed in claim 6, wherein:
the mounting plate (4) is provided with a first mounting hole (401) and a wiring harness hole (402).
9. The mounting fixture for EDR bench testing as defined in claim 1, wherein:
the limiting groove (201) penetrates through the adjusting block (2), and the limiting groove (201) is vertically intersected with the axis of the adjusting block (2);
the fixing bolt (3) is detachably arranged in the limiting groove (201).
10. The mounting fixture for EDR bench testing as defined in claim 1, wherein:
the adjusting hole (101) is a conical hole;
the adjusting block (2) is of a conical structure corresponding to the adjusting hole (101), and the limiting groove (201) is formed in one end, with the small diameter, of the adjusting block (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210514944.5A CN114993696A (en) | 2022-05-11 | 2022-05-11 | A sectional fixture for EDR bench test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210514944.5A CN114993696A (en) | 2022-05-11 | 2022-05-11 | A sectional fixture for EDR bench test |
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| CN114993696A true CN114993696A (en) | 2022-09-02 |
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| CN202210514944.5A Pending CN114993696A (en) | 2022-05-11 | 2022-05-11 | A sectional fixture for EDR bench test |
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