CN211652046U - Car seat back upset endurance test equipment - Google Patents
Car seat back upset endurance test equipment Download PDFInfo
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- CN211652046U CN211652046U CN202020436181.3U CN202020436181U CN211652046U CN 211652046 U CN211652046 U CN 211652046U CN 202020436181 U CN202020436181 U CN 202020436181U CN 211652046 U CN211652046 U CN 211652046U
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Abstract
The utility model discloses car seat back upset endurance test equipment, test equipment includes workstation and test device, test device includes the controller, the rocking arm, servo motor, the activity layer board, a sensor, adjusting device is supported to the layer board, handle unblock subassembly, the apparatus further comprises a rotating shaft, the horizontal pole, pivot and servo motor's output shaft, the sensor location is on servo motor's output shaft, handle unblock gyro wheel can promote back unblock handle unblock when the piston push rod of cylinder stretches out, servo motor's output shaft drives the pivot and rotates, the pivot drives the rocking arm and swings backward, the horizontal pole of being connected with the rocking arm promotes the back and rotates backward. The experimental method comprises the steps that whether the acting force transmitted to the swing arm by the output shaft of the motor is within a set qualified range value of restoring force is measured through a sensor, if yes, the back is made to simulate front and back folding reciprocating motion according to a set program, otherwise, a test sample works in an abnormal state, a controller controls the servo motor to stop rotating, and the test is suspended.
Description
Technical Field
The utility model relates to a car seat capability test equipment, in particular to car seat back upset endurance test equipment.
Background
The backrest is an important part on the automobile seat, the backrest is turned to adjust the angle of the backrest by unlocking the backrest unlocking handle, and the service life of the automobile seat is directly influenced by the turning durability of the backrest. It is therefore necessary to detect the backrest turnover durability performance. The existing seat manufacturer laboratory mainly uses a mechanical arm to complete the test, the cost of the mechanical arm is high, the advantage of good flexibility and flexibility of the mechanical arm for the test is not reflected in the test, data are not collected in the whole test process, relevant test process data are not available for looking up and analyzing after the test is completed, the moment change in the test process cannot be reflected, and whether the reaction test index can not be accurate meets the test requirement or not can be determined.
Disclosure of Invention
The utility model aims at the defect that above-mentioned prior art exists, provide a car seat back upset endurance test equipment, test equipment is nimble simple, can realize the data record discernment, can reflect the test process moment change, and accurate reaction test index is whether accord with the test requirement.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a car seat backrest overturning endurance test device comprises a workbench and a test device, wherein the test device comprises a controller, a rocker arm, a servo motor, a movable supporting plate, a sensor, a supporting plate supporting and adjusting device and a handle unlocking assembly, the servo motor is positioned on the movable supporting plate, one end of the movable supporting plate is connected with the supporting and adjusting device, the bottom end of the supporting and adjusting device is connected with the workbench, one end of the rocker arm is connected with a rotating shaft capable of driving the rocker arm to rotate, the other end of the rocker arm is connected with a cross rod capable of pushing the backrest backwards, the rotating shaft is connected with an output shaft of the servo motor, the sensor is positioned on an output shaft of the servo motor, the servo motor and the sensor are respectively connected with the controller through circuits, the handle unlocking assembly comprises a cylinder supporting seat and a cylinder connected on the cylinder supporting seat, the tail end of a piston push rod of the cylinder is connected with a handle unlocking, when a piston push rod of the cylinder extends out, the handle unlocking roller can push the backrest unlocking handle to unlock the backrest, when the servo motor works, an output shaft of the servo motor drives the rotating shaft to rotate, the rotating shaft drives the rocker arm to swing backwards, and the transverse rod connected with the rocker arm pushes the backrest to rotate backwards.
The utility model discloses a further technical scheme is: the supporting and adjusting device of the supporting plate comprises a mounting base plate, an upper fixing plate, a guide pillar I, a guide pillar II, a guide sleeve I and a guide sleeve II, guide screw, lead screw adjusting device, installation bed plate fixed connection is on the workstation, guide pillar I, the relative both sides of installation bed plate upper surface are connected perpendicularly to guide pillar II, the I surface at guide pillar of uide bushing, the II covers at II surfaces at the guide pillar of uide bushing, an upper fixed plate respectively with guide pillar I, the top of guide pillar II is connected, the installation bed plate upper surface of guide screw perpendicular connection between guide pillar I and guide pillar II, movable supporting plate one end both sides are respectively through connecting bolt and uide bushing I, II fixed connection at the uide bushing, movable supporting plate is equipped with the through-hole in guide screw position, fixedly connected with lead screw guide pin bushing I in the through-hole, guide screw closes soon in the internal thread of lead screw guide pin bushing I and passes movable supporting plate, the guide screw top is passed the upper fixed plate.
The utility model discloses a further technical scheme is: the lead screw adjusting device comprises a lead screw guide sleeve II, a locking bolt, a locking handle, a rotating wheel, a rotating handle, the lead screw guide sleeve II is connected in an upper fixed plate through a mounting bolt, the upper end of a guide lead screw penetrates through the lead screw guide sleeve II and then is connected with the rotating wheel in a key mode, the side wall of the lead screw guide sleeve II is provided with a notch penetrating through the screw hole of the lead screw guide sleeve II, the side wall of the lead screw guide sleeve II is provided with a locking screw hole penetrating through the notch vertically, one end of the locking bolt is positioned in the locking screw hole penetrating through the notch, the locking handle is sleeved at the other end of the locking bolt, the locking handle can.
The utility model discloses a further technical scheme is: and the upper surface of the movable supporting plate is also provided with a support for supporting the rotating shaft and the output shaft of the motor.
The utility model discloses a further technical scheme is: the cylinder supporting seat comprises a bottom base plate, an installation stand column, a connecting plate and a mounting plate, the installation stand column is perpendicularly connected to the upper surface of the bottom base plate, the connecting plate is connected to one side surface of the installation stand column, the mounting plate is connected to the connecting plate and is far away from one end of the installation stand column, the cylinder is fixedly connected to the mounting plate through a connecting bolt, the tail end of a piston push rod of the cylinder is connected with a roller support, and a handle unlocking roller is.
The utility model discloses a further technical scheme is: still be provided with PMKD on the workstation, the seat passes through fixing base and connecting bolt to be fixed on PMKD, and PMKD connects at the workstation upper surface, and the bottom base plate of cylinder supporting seat is fixed connection also on PMKD upper surface.
The utility model discloses car seat back upset endurance test equipment has following beneficial effect: the utility model has simple integral mechanism and low cost; the supporting plate supporting and adjusting device can adjust the movable supporting plate to a proper height according to the height of the seat, so that the test equipment can test seats with different heights, and the application range is wide; the screw rod adjusting device at the upper end of the supporting plate supporting and adjusting device is a manual structure consisting of a rotating wheel and a handle, so that the structure is simple and the operation is convenient; controller control handle unblock subassembly can automatic unblock back unblock handle, degree of automation is high, set up the sensor on the servo motor output shaft, can export the restoring force real-time inspection for the pivot with the servo motor output shaft, can realize data record discernment, whether the controller judges measured power value is in the restoring force allowed range value of settlement, the restoring force is not then stop servo motor work and the stop test in the allowed range value, can effectively avoid the inaccurate test result that the invalid test obtained, can reflect the test process moment change, whether accurate reaction test index accords with the test requirement, and the data that the sensor was gathered can supply to look up the analysis after the experiment, provide the reference for the subsequent performance improvement design of seat handrail.
The following describes the turning endurance test apparatus of the car seat backrest according to the present invention with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic structural view of a turning endurance test apparatus for a seat back of an automobile according to the present invention;
FIG. 2 is an enlarged exploded view at A of FIG. 1;
FIG. 3 is an enlarged exploded view of the handle unlocking assembly;
FIG. 4 is a flow chart of a test method using the turnover endurance test apparatus for the seat back of the car of the present invention;
the reference numbers illustrate: 1-table, 2-movable pallet, 3-mounting base plate, 4-guide sleeve I, 5-handle unlocking assembly, 6-fixed base plate, 7-fixed base, 8-seat, 9-rotating shaft, 10-rocker, 11-cross bar, 12-backrest, 13-screw guide sleeve II, 14-rotating handle, 15-rotating wheel, 16-upper fixed plate, 17-guide post II, 18-guide screw, 19-guide post I, 20-guide sleeve II, 21-support, 22-sensor, 23-servo motor, 24-circuit, 25-controller, 26-locking screw hole, 27-mounting bolt, 28-locking bolt, 29-locking handle, 31-bottom base plate, 32-base plate fixed plate, 33-connecting plate, 34-mounting upright post, 35-connecting bolt, 36-mounting plate, 37-roller support, 38-handle unlocking roller and 39-air cylinder.
Detailed Description
As shown in fig. 1 to 3, the utility model discloses car seat back upset endurance test equipment, including workstation and test device, test device includes that controller, rocking arm, servo motor, activity layer board, sensor, layer board support adjusting device, handle unblock subassembly. The servo motor is positioned on the movable supporting plate, one end of the movable supporting plate is connected with the supporting and adjusting device, and the bottom end of the supporting and adjusting device is connected with the workbench. The supporting plate supporting and adjusting device is used for supporting the movable supporting plate and adjusting the movable supporting plate to a proper height so as to adapt to tests of seats with different heights. One end of the rocker arm is connected with a rotating shaft which can drive the rocker arm to rotate, and the other end of the rocker arm is connected with a cross rod which can push the backrest backwards. The upper surface of the movable supporting plate is also provided with a support for supporting the rotating shaft and the output shaft of the motor. The rotating shaft is connected with an output shaft of the servo motor, the sensor is positioned on the output shaft of the servo motor, the servo motor and the sensor are respectively connected with the controller through circuits, a PLC main control unit, a counter, an alarm and other devices are arranged on the controller, and the controller is an existing device which is purchased directly and is not described in detail herein. Handle unblock subassembly includes cylinder supporting seat and the cylinder of connection on the cylinder supporting seat, the piston push rod end-to-end connection of cylinder has handle unblock gyro wheel, the cylinder supporting seat sets up on the workstation and is located the back unblock handle downside of seat one side, handle unblock gyro wheel can promote back unblock handle and reach the unblock back when the piston push rod of cylinder stretches out, servo motor during operation servo motor's output shaft drives the pivot and rotates, the pivot drives the rocking arm and swings backward, the horizontal pole of being connected with the rocking arm promotes the back and rotates backward.
Wherein layer board supports adjusting device includes installation bed plate, an upper fixed plate, guide pillar I, guide pillar II, uide bushing I, uide bushing II, guide screw, lead screw adjusting device. Installation bed plate fixed connection is on the workstation, and the relative both sides in installation bed plate upper surface are connected perpendicularly to guide pillar I, II vertical connections of guide pillar, and I surface at the guide pillar of uide bushing, II covers at II surfaces of guide pillar of uide bushing, and an upper fixed plate is connected with the top of guide pillar I, guide pillar II respectively. The guide screw is perpendicularly connected to the upper surface of an installation base plate between the guide pillar I and the guide pillar II, two sides of one end of the movable supporting plate are respectively fixedly connected with the guide sleeve I and the guide sleeve II through connecting bolts, a through hole is formed in the position of the guide screw in the movable supporting plate, the guide screw is fixedly connected with the guide screw sleeve I in the through hole, the guide screw is screwed in the internal thread of the guide screw sleeve I and penetrates through the movable supporting plate, and the top end of the guide screw penetrates through the upper fixing plate to be connected with the screw rod.
As shown in fig. 2, the lead screw adjusting device comprises a lead screw guide sleeve II, a locking bolt, a locking handle, a rotating wheel and a rotating handle, wherein the lead screw guide sleeve II is connected in an upper fixing plate through a mounting bolt, the upper end of a guide lead screw penetrates through the lead screw guide sleeve II and then is connected with the rotating wheel in a key mode, the side wall of the lead screw guide sleeve II is provided with a notch penetrating through the screw hole of the lead screw guide sleeve II, the side wall of the lead screw guide sleeve II is provided with a locking screw hole penetrating through the notch vertically, one end of the locking bolt is positioned in the locking screw hole penetrating through the notch, the locking handle is sleeved at the other end of the locking bolt, the.
As shown in fig. 3, the cylinder supporting seat comprises a bottom base plate, an installation stand column, a connecting plate and a mounting plate, the installation stand column is vertically connected to the upper surface of the bottom base plate, the connecting plate is connected to one side surface of the installation stand column, the mounting plate is connected to the end, far away from the end of the installation stand column, of the connecting plate, the cylinder is fixedly connected to the mounting plate through a connecting bolt, the piston push rod end of the cylinder is connected with a roller support, and a handle unlocking.
During operation, still be provided with PMKD on the workstation, the seat passes through fixing base and connecting bolt to be fixed on PMKD, and PMKD connects at the workstation upper surface, and the bottom base plate of cylinder supporting seat is fixed connection also at PMKD upper surface, and bottom base plate both ends are fixed by the base plate fixed plate. And rotating a handle of the screw rod adjusting device according to the height of the seat, so that the guide screw rod drives the movable supporting plate to be at a proper height. And then, a transverse rod connected to one end of the rocker arm leans against the front side of the seat backrest, so that the armrest endurance test can be carried out, when the servo motor works, an output shaft of the servo motor drives the rotating shaft to rotate, the rotating shaft drives the rocker arm to swing backwards, and the transverse rod connected with the rocker arm pushes the backrest to rotate backwards.
Adopt the utility model discloses test method of car seat back upset endurance test equipment, including following step: the controller is started, the controller controls the cylinder to extend out, the cylinder extends out in place, and the backrest is unlocked; (II) the servo motor starts to rotate, a counter in the controller starts to count, and the servo motor rotates backwards when the counter of the controller counts for odd times; when the counter of the controller counts for even times, the servo motor forwards rotates; thirdly, a sensor positioned on the output shaft of the servo motor measures the acting force transmitted to the rotating shaft by the output shaft of the motor, and the sensor feeds the measured acting force back to the controller; (IV) the controller judging whether the measured force value is within the set allowable range of the restoring force (i.e. detecting and recording the deterioration of the restoring force of the seat back in the repeated folding endurance test, the embodiment takes the force value fluctuation not exceeding 20% of the set restoring force value as the value within the allowable range); the force value is within the set allowable range of restoring force (the fluctuation of the force value does not exceed 20 percent of the set restoring force value), the back-rest is subjected to back-and-forth folding reciprocating motion simulation according to a set program, namely, the servo motor continues to rotate backwards or forwards to a position, then the servo motor stops rotating, and then the step (5) is carried out; if the action value is not within the set allowable range value of the restoring force (the fluctuation of the action value exceeds 20 percent of the set restoring force value), the test sample works in an abnormal state, the controller sends an instruction to the servo motor, the servo motor stops running, the air cylinder keeps in a state, the test is suspended, the test data acquisition work is suspended, and a buzzer in the controller sends out a sound alarm; and (V) controlling the cylinder to retract by the controller, locking the backrest when the cylinder retracts to the proper position, sending a next starting instruction by the controller, and circulating the test steps.
The set restoring force value in the test method is a force value preset in the controller, the set restoring force value is a force value capable of unlocking the back unlocking handle, the set restoring force values required by the backs of different seats are different, and a worker can set different restoring force values in the controller according to the backs of different seats. If the force value fluctuation of the restoring force exceeds 20% of the set restoring force value, the restoring force is too large or too small, the service life of the seat back can be shortened by adopting the too large restoring force, and the too small restoring force can not effectively unlock the seat back. Therefore, in the test process, when the detected force value fluctuation of the restoring force exceeds 20% of the set restoring force value, the test sample is judged to be in abnormal state work, the controller controls the servo motor to stop rotating, the air cylinder keeps the state, the buzzer in the controller gives an alarm, and test pause testers can check the abnormal reason of the test equipment. Inaccurate test results obtained by an invalid test can be effectively avoided. The moment change in the test process can be reflected in the test process, whether the test index meets the test requirement or not can be accurately reflected, and the data acquired by the sensor can be consulted and analyzed after the test, so that a reference is provided for the subsequent performance improvement design of the seat armrest.
The test procedure for one cycle is described in detail below: setting experiment parameters (restoring force values) on an operation panel of the controller according to experiment requirements, and starting equipment on the operation panel of the controller; after the device is started, the controller sends an instruction I of extending the cylinder to the cylinder, the cylinder drives the backrest unlocking handle to unlock the backrest after receiving the instruction I, after the unlocking, the cylinder feeds back a signal I of extending the cylinder in place to the controller, the controller sends an instruction II of backward rotation of the servo motor to the servo motor after receiving the odd-numbered signals I, the servo motor drives the rocker arm to rotate backward after receiving the instruction II, the rocker arm drives the backrest to rotate backward, when the rocker arm rotates to a set angle (which is the maximum angle capable of backward rotation), the servo motor feeds back the signal II of placing the servo motor in place to the controller, the controller sends an instruction III of stopping rotation of the servo motor and withdrawing the cylinder to the cylinder after receiving the signal II, the cylinder drives the backrest unlocking handle to lock the backrest after receiving the instruction III, and after the cylinder feeds back a bit signal III of withdrawing the cylinder to the controller, the controller sends an air cylinder extending instruction I to the air cylinder after receiving a signal III, the air cylinder drives the backrest unlocking handle to unlock the backrest after receiving the instruction I, after unlocking, the air cylinder feeds back a signal I that the air cylinder extends in place to the controller, the controller sends a servo motor forward-rotating instruction IV to the servo motor after receiving an even number of times of the signal I that the air cylinder extends in place, the servo motor drives the rocker arm to rotate forward after receiving the instruction IV, the backrest rotates forward along with the rocker arm, when the angle is a set angle (the maximum angle capable of rotating forward), the servo motor feeds back a signal IV that the servo motor is in place forward to the controller, the controller sends a servo motor stop rotation instruction III and an air cylinder retraction instruction III to the air cylinder after receiving the instruction IV, the air cylinder drives the backrest unlocking handle to lock the backrest after receiving the instruction III, and after locking, the air cylinder feeds back a position signal III that the air cylinder retracts to the controller, the controller sends an air cylinder extending instruction I to the air cylinder after receiving a position signal III received by the air cylinder, the controller drives a backrest unlocking handle to unlock the backrest, the air cylinder feeds back the air cylinder extending signal I to the controller after unlocking, and the controller sends a servo motor backward rotating instruction II to the servo motor after receiving an odd number of times of signal I of the air cylinder extending in place; completing the experiment according to the set cycle number by one cycle; the servo motor is provided with a sensor, the sensor tests the restoring force value of the backrest in the whole test process and returns the restoring force value to the controller, the controller stores the received data and compares the received force value with the preset maximum force value and the preset minimum force value, if the fed back data is between the maximum force value and the minimum force value, the test is continued, if the fed back data exceeds the range of the maximum force value and the minimum force value, the seat is invalid or in other abnormal conditions in the test process, the controller gives out the servo motor to stop rotating, the air cylinder keeps in a state, the buzzer gives an alarm, and the test is suspended and gives an alarm to inform experimenter.
The above embodiments are only preferred embodiments of the present invention, the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions, etc. made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (6)
1. An automobile seat backrest overturning endurance test device comprises a workbench (1) and a test device, and is characterized in that the test device comprises a controller (25), a rocker arm (10), a servo motor (23), a movable supporting plate (2), a sensor (22), a supporting plate supporting and adjusting device and a handle unlocking assembly (5), wherein the servo motor (23) is positioned on the movable supporting plate (2), one end of the movable supporting plate (2) is connected with the supporting plate supporting and adjusting device, the bottom end of the supporting plate supporting and adjusting device is connected with the workbench (1), one end of the rocker arm (10) is connected with a rotating shaft (9) capable of driving the rocker arm (10) to rotate, the other end of the rocker arm (10) is connected with a cross rod (11) capable of pushing a backrest (12) backwards, the rotating shaft (9) is connected with an output shaft of the servo motor (23), and the sensor (22) is positioned on an output shaft of, servo motor (23) and sensor (22) are connected with controller (25) through circuit (24) respectively, handle unblock subassembly (5) include cylinder supporting seat and cylinder (39) of connection on the cylinder supporting seat, the piston push rod end-to-end connection of cylinder (39) has handle unblock gyro wheel, the cylinder supporting seat sets up on workstation (1) and is located the back unblock handle downside of seat one side, handle unblock gyro wheel can promote back unblock handle and reach unblock back (12) when the piston push rod of cylinder (39) stretches out, servo motor (23) during operation output shaft drive pivot (9) of servo motor (23) rotate, pivot (9) drive rocking arm (10) swing backward, horizontal pole (11) of being connected with rocking arm (10) promote back (12) and rotate backward.
2. The apparatus for testing the turnover durability of the backrest of an automobile seat as claimed in claim 1, wherein the supporting plate supporting and adjusting means comprises a mounting base plate (3), an upper fixing plate (16), a guide post I (19), a guide post II (17), a guide sleeve I (4), a guide sleeve II (20), a guide screw (18), and a screw adjusting means, the mounting base plate (3) is fixedly connected to the working table (1), the guide post I (19) and the guide post II (17) are vertically connected to opposite sides of the upper surface of the mounting base plate (3), the guide sleeve I (4) is sleeved on the outer surface of the guide post I (19), the guide sleeve II (20) is sleeved on the outer surface of the guide post II (17), the upper fixing plate (16) is respectively connected to the top ends of the guide post I (19) and the guide post II (17), the guide screw (18) is vertically connected to the upper surface of the mounting base plate (3) between the guide post I (19, the movable supporting plate is characterized in that two sides of one end of the movable supporting plate (2) are fixedly connected with a guide sleeve I (4) and a guide sleeve II (20) through connecting bolts respectively, a through hole is formed in the position of a guide screw rod (18) of the movable supporting plate (2), a screw rod guide sleeve I is fixedly connected into the through hole, the guide screw rod (18) is screwed into an internal thread of the screw rod guide sleeve I and penetrates through the movable supporting plate (2), and the top end of the guide screw rod (18) penetrates through an upper fixing plate (16) to be connected with a screw rod.
3. The car seat backrest overturn endurance test apparatus of claim 2, wherein the screw rod adjusting device comprises a screw rod guide sleeve II (13), a locking bolt (28), a locking handle (29), a rotating wheel (15), and a rotating handle (14), the screw rod guide sleeve II (13) is connected in the upper fixing plate (16) through a mounting bolt (27), the upper end of the guide screw rod (18) is connected with the rotating wheel (15) after passing through the screw rod guide sleeve II (13), the side wall of the screw rod guide sleeve II (13) is provided with a notch penetrating through the inner hole thereof, the side wall of the screw rod guide sleeve II (13) is provided with a locking screw hole (26) vertically penetrating through the notch, one end of the locking bolt (28) is positioned in the locking screw hole (26) penetrating through the notch, the locking handle (29) is sleeved at the other end of the locking bolt (28), the locking bolt guide sleeve (28) can be rotated by rotating the locking handle (29) to lock the guide screw rod guide, the rotating handle (14) is connected with the rotating wheel (15).
4. The apparatus for testing the turnover durability of the backrest of the car seat as claimed in claim 1, wherein a support (21) for supporting the rotation shaft (9) and the output shaft of the motor is further provided on the upper surface of the movable supporting plate (2).
5. The car seat backrest overturning endurance test apparatus according to claim 1, wherein the cylinder support base includes a bottom base plate (31), a mounting column (34), a connecting plate (33), and a mounting plate (36), the mounting column (34) is vertically connected to an upper surface of the bottom base plate (31), the connecting plate (33) is connected to a side surface of the mounting column (34), the mounting plate (36) is connected to one end of the connecting plate (33) far away from the mounting column (34), the cylinder (39) is fixedly connected to the mounting plate (36) through a connecting bolt (35), a roller support (37) is connected to an end of a piston push rod of the cylinder (39), and the handle unlocking roller (38) is connected to the roller support (37).
6. The seatback overturn endurance testing apparatus of claim 5, wherein a fixing base plate (6) is further disposed on the table (1), the seat (8) is fixed to the fixing base plate (6) by the fixing base (7) and the connecting bolt, the fixing base plate (6) is connected to an upper surface of the table (1), and the bottom base plate (31) of the cylinder support seat is also fixedly connected to an upper surface of the fixing base plate (6).
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| CN202020436181.3U CN211652046U (en) | 2020-03-30 | 2020-03-30 | Car seat back upset endurance test equipment |
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| CN202020436181.3U CN211652046U (en) | 2020-03-30 | 2020-03-30 | Car seat back upset endurance test equipment |
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| CN211652046U true CN211652046U (en) | 2020-10-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112360A (en) * | 2021-11-24 | 2022-03-01 | 惠州市德赛西威汽车电子股份有限公司 | Rolling and pull rod durability testing device and using method |
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2020
- 2020-03-30 CN CN202020436181.3U patent/CN211652046U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112360A (en) * | 2021-11-24 | 2022-03-01 | 惠州市德赛西威汽车电子股份有限公司 | Rolling and pull rod durability testing device and using method |
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