Omnidirectional comprehensive performance testing mechanism for electric slide rail of automobile seat

Abstract

The utility model discloses an omni-directional comprehensive performance testing mechanism for an electric slide rail of an automobile seat, which belongs to the technical field of testing devices for the electric slide rail of the automobile seat and comprises a lifting cylinder, a separation switching cylinder, a screw shaft servo motor, a push rod circumferential rotation servo motor, an auxiliary moving platform, a fixed rack and a push rod. The lifting air cylinder and the separation switching air cylinder are connected in series in a back-to-back mode, an output shaft of the lifting air cylinder is connected with a transversely-arranged lifting air cylinder push rod, and an output shaft of the separation switching air cylinder is connected with a transversely-arranged series-connection air cylinder supporting plate. The lifting air cylinder push rod drives the electric sliding rail stress frame to ascend and descend. The lead screw shaft servo motor and the push rod circumferential rotation servo motor are fixed to the series air cylinder supporting plate. A to-be-tested automobile seat electric sliding rail is installed on the electric sliding rail stress frame. According to the utility model, tests of various pressure states can be carried out, which is close to the real state of seat stress.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive seat electric slide rail test devices, and particularly relates to an omnidirectional comprehensive performance test mechanism for automotive seat electric slide rails. Background Art

[0002] With the increasing popularity of automobiles, the safety of automobiles has received more and more attention. Evaluating the sliding performance and durability performance of automotive seat electric slide rails is of great significance.

[0003] For the test of the sliding performance and durability performance of automotive seat electric slide rails, the prior art generally conducts a single push-pull test or a torsional test with several degrees of freedom. For example, the Chinese invention patent (application number: 202111203515.8) discloses an automotive seat slide rail assembly vibration test device, including a device platform, and a vibration test mechanism and a pressure test mechanism are arranged at the upper and lower ends of the device platform; the vibration test mechanism includes a fixed frame plate, an electric telescopic cylinder, a fixed strip plate, an electric slide rail, an electric slider, a polishing brush, a first cavity, a motor, a motor shaft, a blowing fan blade, a square hole and a partition net; a plurality of first cavities are equidistantly arranged inside the device platform. By arranging an electric telescopic cylinder, an electric slide rail and a polishing brush on the electric slider inside the fixed frame plate, multiple slide rails can be fixed by using the electric telescopic cylinders arranged up and down. After the fixing is completed, the slide rails can be subjected to a vibration test by using multiple vibration motors. Moreover, after the electric slide rail is opened to drive the electric slider to move, the inner and outer parts of the slide rail can be cleaned and polished by using the polishing brush, so that the test mechanism and the polishing mechanism are combined together.

[0004] In the above-mentioned prior art for testing the sliding performance and durability performance of automotive seat electric slide rails, the force forms of the seat are not comprehensive, the movement amplitude and force change are small, and the test functions are single.

[0005] The information disclosed in this background art section is only intended to increase the understanding of the overall background of the present utility model, and should not be regarded as an admission or any form of suggestion that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] The purpose of the present utility model is to provide a test mechanism for the sliding performance and durability performance of an electric slide rail, which can test the thrust and torsional durability performance in any direction within 360° of the electric slide rail, can test the sliding performance of the electric slide rail under a loaded condition; can conduct tests under various pressure states, approaching the real state of the seat force.

[0007] To achieve the above object, the present utility model provides an omnidirectional comprehensive performance testing mechanism for an electric slide rail of an automotive seat, including a lifting cylinder, a separating and switching cylinder, a lead screw shaft servo motor, a push rod circumferential rotation servo motor, an auxiliary moving platform, a fixed mounting bracket, and a push rod;

[0008] The lifting cylinder and the separating and switching cylinder are connected in series in opposite directions. The output shaft of the lifting cylinder is connected to a horizontally arranged lifting cylinder push rod, and the output shaft of the separating and switching cylinder is connected to a horizontally arranged series cylinder support plate; the lifting cylinder push rod drives the electric slide rail force receiving frame to move up and down, and the lead screw shaft servo motor and the push rod circumferential rotation servo motor are fixed on the series cylinder support plate; the electric slide rail to be tested is installed on the electric slide rail force receiving frame;

[0009] The push rod circumferential rotation servo motor is arranged on the fixed mounting bracket; the output shaft of the push rod circumferential rotation servo motor is connected to a circumferential rotation gear sleeve, and a rotating sleeve is fixed below the circumferential rotation gear sleeve;

[0010] A lifting sleeve is arranged below the lifting cylinder push rod, and the lower end of the lifting sleeve is sleeved outside the electric slide rail force receiving frame. Through a retaining edge and a retaining ring structure, the electric slide rail force receiving frame can be driven to move together with the lifting sleeve;

[0011] The output shaft of the lead screw shaft servo motor is connected to a lead screw shaft. The lower part of the lead screw shaft is sequentially connected with a lead screw tapered sleeve, a piezoelectric pressure sensor, and a pressure shaft. A push rod is arranged on the side of the lead screw tapered sleeve, and a needle bearing roller is arranged at the head of the push rod. The needle bearing roller is in contact with the cylindrical surface inside the electric slide rail force receiving frame.

[0012] In one or more embodiments, the auxiliary moving platform is movably arranged on the fixed mounting bracket through a slider and a slide rail. An upper slide rail and a lower slide rail are fixed on the auxiliary moving platform through a connecting block, and the electric slide rail force receiving frame is slidably connected to the upper slide rail.

[0013] In one or more embodiments, a fixed stroke limit retaining ring is arranged on the outer circumferential surface of the electric slide rail force receiving frame, and a circumferential retaining edge is arranged inside the lower end of the lifting sleeve. The lifting cylinder and the separating and switching cylinder together drive the lifting sleeve to rise and fall.

[0014] In one or more embodiments, an inverted conical roller is arranged at the tail of the push rod. The diameter of the upper part of the inverted conical roller is larger than that of the lower part, and the inverted conical roller is in contact with the lead screw tapered sleeve.

[0015] In one or more embodiments, a shaft is arranged inside the conical roller, and paired angular contact ball bearings are installed between the shaft and the conical roller.

[0016] In one or more embodiments, a tension spring is disposed between the push rod and the bottom of the rotating sleeve. One end of the tension spring is mounted on the rotating sleeve by a screw, and the other end is mounted on the push rod by a screw.

[0017] In one or more embodiments, a support sleeve is disposed outside the rotating sleeve. An angular contact bearing, a retaining ring and a retaining ring are disposed between the rotating sleeve and the support sleeve; a current circumferential slip ring is mounted on the support sleeve, and a circumferential slip ring rotating ring is disposed below the current circumferential slip ring, and a synchronous limit plate is mounted thereon; the synchronous limit plate is limited by a synchronous limit block.

[0018] In one or more embodiments, a pushing cylinder is disposed at the bottom of the fixed mount. The output shaft of the pushing cylinder is used to push the auxiliary moving platform support plate to lift, and the pushing cylinder is fixed on the fixed mount by a baffle; the auxiliary moving platform is mounted on the auxiliary moving platform support plate.

[0019] In one or more embodiments, an electromagnet is further disposed at the bottom of the fixed mount for fixing and detaching the auxiliary moving platform support plate.

[0020] Compared with the prior art, an omnidirectional comprehensive performance test mechanism for an electric slide rail of an automobile seat according to the present invention can test the thrust and torsional durability performance in any direction within 360° of the electric slide rail; can automatically adjust and change the torsional thrust value in real time; can test the sliding performance of the electric slide rail under load; can automatically adjust and change the load force value in real time; can test the sliding performance of the electric slide rail at any position and stroke; can perform variable load force test during the sliding process of the electric slide rail; can read the circumferential radial thrust data and vertical load force data in real time. The test mechanism disclosed by the present invention can perform diversified tests and is close to the actual use conditions of the automobile seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of an omnidirectional comprehensive performance test mechanism for an electric slide rail of an automobile seat according to an embodiment of the present invention, and the figure shows a horizontal torsion test state;

[0022] Figure 2 It is a front view of the test mechanism of the present invention, and the figure shows a horizontal torsion test state;

[0023] Figure 3 It is a front view of the test mechanism of the present invention, and the figure shows a push rod pressure test and an auxiliary moving platform fixed state;

[0024] Figure 4Front view of the test force application mechanism of the present utility model;

[0025] Figure 5 Front view of the compression state of the push rod pressure spring;

[0026] Figure 6 Front view of the state where the push rod control shaft presses down and the push rod retracts;

[0027] Figure 7 Front view of the state where the push rod control shaft applies force and presses down, showing the compression state of the pressure spring in the figure;

[0028] Figure 8 Front view of the rising position of the test mechanism of the electric slide rail force-bearing frame.

[0029] Main reference numeral description:

[0030] Lifting pull rod 1, lifting cylinder push rod 2, lifting cylinder 3, separation and switching cylinder 4, series cylinder support plate 5, lead screw shaft servo motor 6, push rod circumferential rotation servo motor 7, small gear 8, circumferential rotation gear sleeve 9, upper slide rail 10, lower slide rail 11, connecting block 12, auxiliary moving platform 13, slider 14, slide rail 15, electric slide rail force-bearing frame 16, lifting sleeve 17, switching limit sleeve 18, support plate 19, support column 20, longitudinal beam 21, fixed bench 22, lead screw support sleeve 23, lead screw shaft 24, lead screw shaft upper seat 25, lead screw shaft lower seat 26, guide post seat plate 27, current circumferential slip ring 28, current circumferential slip ring rotating ring 29, guide sleeve 30, synchronous limit plate 31, synchronous limit block 32, pressure shaft 33, baffle 34, pressure spring 35, pressure buffer sleeve 36, piezoelectric pressure sensor 37, connecting sleeve 38, lead screw tapered sleeve 39, rotating sleeve 40, guide post 41, support sleeve 42, retaining ring 43, angular contact bearing 44, retaining ring 45, retaining piece 46, pressure spring 47, piezoelectric pressure sensor 48, needle bearing roller support plate 49, needle bearing roller 50, connecting plate 51, limit block 52, screw 53, pressure spring sleeve 54, tension spring 55, screw 56, push rod 57, shaft 58, angular contact bearing 59, retaining ring 60, tapered roller 61, angular contact bearing 62, baffle 63, electromagnet 64, push air cylinder 65, auxiliary moving platform support plate 66. Detailed implementation manners

[0031] The following combines the drawings to describe in detail the specific implementation manners of the present utility model, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation manners.

[0032] Unless otherwise expressly stated, throughout the specification and claims, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component and not to exclude other elements or other components.

[0033] As Figures 1 to 8 shown, a comprehensive omnidirectional performance testing mechanism for an electric slide rail of an automotive seat according to an embodiment of the present utility model includes a lifting cylinder 3, a separating and switching cylinder 4, a push rod circumferential rotation servo motor 7, an auxiliary moving platform 13, a fixed mount 22, a test force application mechanism, and a push rod 57.

[0034] Two longitudinal beams 21 are fixedly arranged on the fixed mount 22. A support plate 19 is connected between the two longitudinal beams 21, and the push rod circumferential rotation servo motor 7 is fixedly arranged on the support plate 19. The output shaft of the push rod circumferential rotation servo motor 7 is connected to a circumferential rotation gear sleeve 9 to control the rotation of the circumferential rotation gear sleeve 9. Specifically, the output shaft of the push rod circumferential rotation servo motor 7 is connected to a worm and gear reducer, and the worm and gear reducer is connected to a small gear 8. The side of the circumferential rotation gear sleeve 9 is a serrated structure, and the small gear 8 meshes with the circumferential rotation gear sleeve 9 and can drive the circumferential rotation gear sleeve 9 to rotate. A rotating sleeve 40 is fixed below the circumferential rotation gear sleeve 9. The rotating sleeve 40 passes through an opening at the center of the support plate 19 and extends below the support plate 19.

[0035] The lifting cylinder 3 and the separating and switching cylinder 4 are connected in series in the opposite direction, that is, the output shafts of the lifting cylinder 3 and the separating and switching cylinder 4 face opposite directions respectively. The output shaft of the lifting cylinder 3 is connected to a horizontally arranged lifting cylinder push rod 2; the output shaft of the separating and switching cylinder 4 is connected to a horizontally arranged series cylinder support plate 5. The support plate 19 is connected to the series cylinder support plate 5 through a support column 20 and is arranged below the series cylinder support plate 5. Both sides of the lifting cylinder push rod 2 are respectively connected to a lower switching limit sleeve 18 through a lifting pull rod 1, and a lifting sleeve 17 is sleeved on the outer lower part of the switching limit sleeve 18.

[0036] The auxiliary moving platform 13 is movably arranged on the fixed mount 22 through a slider 14 and a slide rail 15. An upper slide rail 10 and a lower slide rail 11 are fixed on the auxiliary moving platform 13 through a connecting block 12. An electric slide rail force receiving frame 16 is slidably connected to the upper slide rail 10. The electric slide rail to be tested is installed on the electric slide rail force receiving frame 16, and it can drive the auxiliary moving platform 13 to move under the drive of the electric slide rail of the automotive seat itself, realizing the sliding performance test of the electric slide rail.

[0037] The lower end of the lifting sleeve 17 is sleeved outside the electric slide rail force-bearing frame 16. Through the structure of the retaining edge and the retaining ring, the electric slide rail force-bearing frame 16 can be driven to move together with the lifting sleeve 17. Specifically, a fixed stroke limit retaining ring is arranged on the outer circumferential surface of the electric slide rail force-bearing frame 16, and a circumferential retaining edge is arranged on the inner side of the lower end of the lifting sleeve 17. The lifting cylinder 3 and the separation and switching cylinder 4 can drive the lifting sleeve 17 to rise and fall together. The lifting sleeve 17 has two fixed strokes. The first fixed stroke is the combined and separated control position of the electric slide rail force-bearing frame and the test force-applying mechanism ( Figure 4 the structure shown). The second fixed stroke is the rising and falling control position of the electric slide rail force-bearing frame. The test force-applying mechanism is arranged in the lifting sleeve 17 and the switching limit sleeve 18.

[0038] The lifting sleeve 17 and the switching limit sleeve 18 are fixedly connected and lifted and lowered synchronously. The lifting sleeve 17 can hook the electric slide rail force-bearing frame 16; the limit sleeve 18 can sleeve the guide sleeve 30 and the electric slide rail force-bearing frame 16 together. The lifting cylinder 3 can drive the lifting sleeve 17 and the switching limit sleeve 18 through the lifting pull rod 1, and then lift the electric slide rail force-bearing frame 16, which is convenient for the installation and disassembly of the electric slide rail. The separation and switching cylinder 4 can push the lifting cylinder 3 to move up and down, and then realize the up and down movement of the lifting sleeve 17 and the switching limit sleeve 18 to switch the test function.

[0039] When the electric slide rail force-bearing frame 16 is separated from the test force-applying mechanism, a full-circumference thrust torsion test is carried out on the electric slide rail of the car seat; when the electric slide rail force-bearing frame 16 is combined with the test force-applying mechanism, a sliding performance test of the electric slide rail is carried out; when the electric slide rail force-bearing frame 16 rises to the fixed stroke position, the installation and disassembly of the electric slide rail are carried out; when the electric slide rail force-bearing frame 16 descends to the fixed stroke position, the test position is carried out.

[0040] A lead screw shaft servo motor 6 and a pressure spring 35 are arranged between the lead screw shaft 24 of the electric slide rail force-bearing frame 16 and the lead screw shaft servo motor 6. A worm and worm gear reducer is arranged on the output shaft of the lead screw shaft servo motor 6. The worm and worm gear reducer is connected with the lead screw shaft 24 and drives the lead screw shaft 24 to rotate. Specifically, the lead screw shaft 24 is supported by a lead screw shaft upper seat 25 and a lead screw shaft lower seat 26. The lead screw shaft upper seat 25 is installed on the lower side of the seat plate of the lead screw shaft servo motor 6, and the lead screw shaft lower seat 26 is installed on the lead screw support sleeve 23. The lead screw support sleeve 23 is a cylindrical structure, which is sleeved outside the lead screw shaft 24 and is also installed on the lower side of the seat plate of the lead screw shaft servo motor 6. The head of the lead screw shaft 24 is a trapezoidal lead screw, and a positive conical thrust step is arranged in the middle.

[0041] A guide post base plate 27 is installed at the lower part of the lead screw support sleeve 23. A guide post 41 is installed on the guide post base plate 27. The guide post 41 is sequentially and fixedly connected downward with a lead screw tapered sleeve 39, a connecting sleeve 38, a piezoelectric pressure sensor 37, and a pressure shaft 33 in series. The diameter of the lower end of the lead screw tapered sleeve 39 is larger than that of its upper end. The lower end of the lead screw tapered sleeve 39 is fixed to the connecting sleeve 38. Through holes are provided at the centers of the lead screw tapered sleeve 39 and the connecting sleeve 38 for the lead screw shaft 24 to pass through, and the lower end of the lead screw shaft 24 is arranged in the through hole of the connecting sleeve 38. The piezoelectric pressure sensor 37 is fixed to the lower end of the connecting sleeve 38, the pressure shaft 33 is fixed to the lower end of the piezoelectric pressure sensor 37, and a pressure spring 35 is arranged at the lower end of the pressure shaft 33. Specifically, the pressure spring 35 is fixed to the lower end of the pressure shaft 33 through a baffle 34. A pressure buffer sleeve 36 is sleeved outside the pressure spring 35. The pressure buffer sleeve 36 is a cover structure with an open upper end, and a retaining edge is provided at the opening thereof, so that the pressure spring 35 can be placed inside the pressure buffer sleeve 36, and the pressure buffer sleeve 36 can move up and down relative to the baffle 34. The pressure buffer sleeve 36 is used to generate a vertically downward load pressure on the electric slide rail stress frame. An axial limiting post for the lead screw tapered sleeve 39 is provided at the middle position of the lead screw shaft 24 to ensure that the structure of the lead screw tapered sleeve 39 can only move up and down and cannot rotate circumferentially.

[0042] A support sleeve 42 is arranged outside the rotating sleeve 40. An angular contact bearing 44, a retaining ring 43, and a retaining ring 45 are arranged between the rotating sleeve 40 and the support sleeve 42. The angular contact bearing 44 is used to reduce the resistance between the rotating sleeve 40 and the support sleeve 42 when the rotating sleeve 40 rotates.

[0043] The structure of the test force application mechanism is as Figure 4 shown. A push rod 57 is arranged on the side surface of the lead screw tapered sleeve 39. A needle roller bearing roller 50 is arranged at the head of the push rod 57. The needle roller bearing roller 50 is in contact with the inner cylindrical surface of the electric slide rail stress frame 16. When the push rod 57 rotates 360° around the lead screw tapered sleeve 39, the needle roller bearing roller 50 rolls along the inner cylindrical surface and provides a thrust force at the same time.

[0044] An inverted tapered roller 61 is arranged at the tail of the push rod 57. The diameter of the upper part of the inverted tapered roller 61 is larger than that of the lower part. The inverted tapered roller 61 is in contact with the lead screw tapered sleeve 39. A shaft 58 is arranged inside the tapered roller 61. Paired angular contact ball bearings 59 and 62 are installed between the shaft 58 and the tapered roller 61. The contact bearing 59, the retaining ring 60, and the angular contact bearing 62 are integrally installed inside the tapered roller 61.

[0045] The top and bottom of the shaft 58 are fixedly connected to the push rod 57, enabling the tapered roller 61 to rotate relative to 57. The inverted tapered outer conical surface of the inverted tapered roller 61 is tangent to the positive tapered outer conical surface of the lead screw tapered sleeve 39, and the forward and backward movement of the push rod 57 is provided by the change in the lifting position of the lead screw tapered sleeve 39.

[0046] A pressure spring 47 is arranged inside the push rod 57 as a thrust adjustment mechanism. The pressure spring 47 has a length limit baffle. When the thrust of the push rod 57 is small, this pressure spring 47 is in the longest position. When the thrust continues to increase, this pressure spring 47 can be contracted to provide force buffering. A piezoelectric pressure sensor 48 is arranged at the head position of the push rod 57. Through this piezoelectric pressure sensor 48, the pressure value generated by the push rod 57 can be read in real time. Specifically, connecting plates 51 and a needle roller bearing roller support plate 49 are fixedly arranged on both sides of the piezoelectric pressure sensor 48 respectively. The pressure spring sleeve 54 is connected and fixed to the connecting plate 51. The needle roller bearing roller 50 is installed on the needle roller bearing roller support plate 49. The pressure spring sleeve 54 is installed inside the push rod 57, and the pressure spring 47 is placed inside the pressure spring sleeve 54.

[0047] Circumferential rotation stop limit blocks 52 are arranged on the rod body of the head of the push rod 57. Sliding grooves are arranged on the connecting plate 51. The circumferential rotation stop limit blocks 52 are arranged in the sliding grooves of the connecting plate 51, which is used to ensure that the connecting plate 51 can only perform radial translation under the limitation of the circumferential rotation stop limit blocks 52 and cannot rotate around the central axis of the pressure spring 47, so as to ensure that the outer cylindrical surface of the needle roller bearing roller 50 can always be attached to the inner cylindrical surface of the electric slide rail stress frame 16. Therefore, it can be ensured that the needle roller bearing roller 50 can always be in the correct working posture. The rod body at the tail of the push rod 57 is of a square structure to ensure that the tapered roller 61 always fits with the cone of the lead screw tapered sleeve 39.

[0048] A tension spring 55 is arranged between the bottom of the push rod 57 and the rotating sleeve 40. The push rod 57 can automatically retract through the tension spring 55. When it is not necessary for the push rod 57 to contact the inner cylindrical surface of the electric slide rail stress frame 16, the inclined plane control mechanism of the inverted tapered roller 61 at the tail of the push rod 57 gives way, and the push rod 57 can retract to the limited stop position under the action of the tension spring 55. Specifically, one end of the tension spring 55 is installed on the rotating sleeve 40 through a screw 56, and the other end is installed on the connecting plate 51 through a screw 53.

[0049] The push rod 57 can be retracted through the tension spring 55 when it is not under the thrust of the lead screw tapered sleeve 39, so that the needle roller bearing roller 50 does not contact the electric slide rail stress frame 16; through the compression deformation of the pressure spring 47, the thrust of the push rod 57 on the electric slide rail stress frame 16 can be continuously increased.

[0050] On the outer surface of the rotating sleeve 40 above the push rod 57, a current circular slip ring 28 is mounted on the support sleeve 42. Below the current circular slip ring 28, there is a circular slip ring rotating ring 29, on which a synchronous limit plate 31 is mounted. The synchronous limit plate 31 is limited by a synchronous limit block 32, and the synchronous limit block 32 can ensure that the rotation of the circular slip ring rotating ring 29 is synchronous with that of the push rod 57. Below the support plate 19, a guide sleeve 30 is fixedly connected to guide the rotation of the circumferential slip ring rotating ring 29 and the push rod 57. The fixing method is preferably screw connection.

[0051] At the bottom of the fixed mount 22, a push cylinder 65 is provided. The output shaft of the push cylinder 65 is used to push the auxiliary moving platform support plate 66 to move up and down. The push cylinder 65 is fixed to the fixed mount 22 through a baffle 63. An auxiliary moving platform 13 is mounted on the auxiliary moving platform support plate 66. At the bottom of the fixed mount 22, an electromagnet 64 is also provided to fix and disassemble the auxiliary moving platform support plate 66.

[0052] By rotating the lead screw shaft 24, the lead screw tapered sleeve 39 is driven to move up and down, and the radial telescopic adjustment of the push rod 57 can be performed to apply a thrust to the electric slide rail stress frame 16 and withdraw the applied force. The circumferential rotation servo motor 7 of the push rod drives the rotating sleeve 40 to rotate, enabling the push rod 57 to rotate in a circular motion around the center. Through the synchronous limit plate 31 and the synchronous limit block 32, the current circular slip ring rotating ring 29 and the rotating sleeve 40 rotate synchronously, and the value of the piezoelectric pressure sensor 48 is transmitted through the current circular slip ring 28. By compressing the pressure spring 35, the pressure on the electric slide rail stress frame 16 is increased and the force on the electric slide rail stress frame 16 is buffered.

[0053] The circumferential rotation of the lead screw shaft 24 is driven by the lead screw shaft servo motor 6, and the rotation speed of the lead screw shaft servo motor 6 can be adjusted. The lifting of the lead screw tapered sleeve 39 is driven by the circumferential rotation servo motor 7 of the push rod, and thus the lifting position can be adjusted at any time, providing a variable thrust for the push rod 57. Through random adaptation, diverse torsional performance tests can be provided for the electric slide rail.

[0054] The present utility model can also switch between the following two test functions:

[0055] Test 1: When testing the omnidirectional anti-torsion performance of the slide rail, the needle roller bearing roller 50 is used to push the electric slide rail stress frame 16 from the center outwards, and at the same time, the needle roller bearing roller 50 rotates circumferentially in a circular motion to push the electric slide rail stress frame 16 outwards within a range of 360 degrees. Therefore, the limit sleeve 18, the guide sleeve 30, and the electric slide rail stress frame 16 cannot be sleeved together. The limit sleeve 18 is fixed, and the electric slide rail stress frame 16 can twist under the thrust of the needle roller bearing roller 50.

[0056] Test 2: When testing the sliding performance of the electric slide rail, the limit sleeve 18 descends, and the limit sleeve 18 sleeves the guide sleeve 30 and the electric slide rail stress frame 16 together. At this time, the electric slide rail stress frame 16 is fixed together with the limit sleeve 18. In this case, the electromagnet 64 is powered off and no longer attracts the auxiliary moving platform support plate 66; the auxiliary moving platform support plate 66 drives the auxiliary moving platform support plate 66 to move back and forth linearly under the power of the electric drive of the electric slide rail itself to test the sliding performance of the electric drive. Since the electric slide rail stress frame 16 is connected to the moving slide rail of the electric slide rail, and the moving slide rail of the electric slide rail is fixed together with the limit sleeve 18 by the electric slide rail stress frame 16, therefore, only the fixed slide rail of the electric slide rail can drive the auxiliary moving platform support plate 66 to move back and forth.

[0057] The test mechanism of the present utility model can achieve the ability to test the thrust and torsional durability performance in any direction within the 360° range of the electric slide rail; the ability to automatically adjust and change the torsional thrust value in real time; the ability to test the sliding performance of the electric slide rail under a loaded condition; the ability to automatically adjust and change the load force value in real time; the ability to test the sliding performance at any position and stroke of the electric slide rail; the ability to conduct variable load force tests during the sliding process of the electric slide rail; the ability to read the circumferential radial thrust data and vertical load force data in real time. The test mechanism disclosed by the present utility model can conduct diversified tests, which is close to the actual use conditions of automobile seats, close to the actual use conditions of automobile seats.

[0058] The foregoing description of the specific exemplary embodiments of the present utility model is for the purposes of illustration and exemplification. These descriptions are not intended to limit the present utility model to the precise forms disclosed, and it is apparent that many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present utility model and its practical applications, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the present utility model, as well as various different selections and changes. The scope of the present utility model is intended to be defined by the claims and their equivalents.

Claims

1. An omnidirectional comprehensive performance testing mechanism for electric slide rails of automobile seats, characterized in that: It includes lifting cylinder, separation switching cylinder, screw shaft servo motor, push rod circumferential rotation servo motor, auxiliary mobile platform, fixed stand and push rod; The lifting cylinder and the separation switching cylinder are connected in series in reverse order, the output shaft of the lifting cylinder is connected to a lifting cylinder push rod arranged horizontally, and the output shaft of the separation switching cylinder is connected to a series cylinder support plate arranged horizontally; the lifting cylinder push rod drives the electric slide rail force frame to lift, the screw shaft servo motor and the push rod circumferential rotation servo motor are fixed on the series cylinder support plate; the electric slide rail of the car seat to be tested is installed on the electric slide rail force frame; The push rod circumferential rotation servo motor is arranged on the fixed stand; the output shaft of the push rod circumferential rotation servo motor is connected to the circumferential rotation gear sleeve, and a rotating sleeve is fixed below the circumferential rotation gear sleeve; A lifting sleeve is provided below the lifting cylinder push rod, and the lower end of the lifting sleeve is sleeved on the outer side of the electric slide rail force frame, and the electric slide rail force frame can be driven to move along with the lifting sleeve through the retaining edge and retaining ring structure; The output shaft of the screw shaft servo motor is connected to the screw shaft, and the lower part of the screw shaft is sequentially connected to a screw tapered sleeve, a piezoelectric pressure sensor and a pressure shaft. A push rod is arranged on the side of the screw tapered sleeve, and a needle bearing roller is arranged on the head of the push rod. The needle bearing roller contacts the cylindrical surface on the inner side of the electric slide rail force frame.

2. The omnidirectional comprehensive performance testing mechanism for electric slide rails of automobile seats as claimed in claim 1, characterized in that: An auxiliary mobile platform is movably provided on the fixed stand through sliders and slide rails, an upper slide rail and a lower slide rail are fixed on the auxiliary mobile platform through a connecting block, and an electric slide rail force frame is slidably connected to the upper slide rail.

3. The omnidirectional comprehensive performance testing mechanism for electric slide rails of automobile seats as claimed in claim 1, characterized in that: The outer circumferential surface of the electric slide rail force frame is provided with a fixed stroke limit retaining ring, the inner side of the lower end of the lifting sleeve is provided with a circumferential retaining edge, and the lifting cylinder and the separation switching cylinder drive the lifting sleeve to rise and fall together.

4. The omnidirectional comprehensive performance testing mechanism for electric slide rails of automobile seats as claimed in claim 1, characterized in that: An inverted tapered roller is arranged at the tail of the push rod, the upper diameter of the inverted tapered roller is larger than the lower diameter, and the inverted tapered roller is in contact with the screw rod tapered sleeve.

5. The omnidirectional comprehensive performance testing mechanism for electric slide rails of automobile seats as claimed in claim 4, characterized in that: A shaft is arranged inside the tapered roller, and an angular contact ball bearing and an angular contact ball bearing used in pairs are installed between the shaft and the tapered roller.

6. The omnidirectional comprehensive performance testing mechanism for electric slide rails of automobile seats as claimed in claim 1, characterized in that: A tension spring is arranged between the push rod and the bottom of the rotating sleeve, one end of the tension spring is mounted on the rotating sleeve through a screw, and the other end of the tension spring is mounted on the push rod through a screw.

7. The omnidirectional comprehensive performance testing mechanism for electric slide rails of automobile seats as claimed in claim 1, characterized in that: A support sleeve is arranged outside the rotating sleeve, and an angular contact bearing, a retaining ring and a retaining ring are arranged between the rotating sleeve and the support sleeve; a current circumferential slip ring is installed on the support sleeve, and a circumferential slip ring rotating ring is arranged below the current circumferential slip ring, on which a synchronous limit plate is installed; the synchronous limit plate is limited by a synchronous limit block.

8. The omnidirectional comprehensive performance testing mechanism for electric slide rails of automobile seats as claimed in claim 1, characterized in that: A thrust cylinder is arranged at the bottom of the fixed platform, and the output shaft of the thrust cylinder is used to push the auxiliary mobile platform support plate to move up and down. The thrust cylinder is fixed to the fixed platform through a baffle; the auxiliary mobile platform is installed on the auxiliary mobile platform support plate.

9. The omnidirectional comprehensive performance testing mechanism for electric slide rails of automobile seats as claimed in claim 8, characterized in that: An electromagnet is also provided at the bottom of the fixed stand for fixing and removing the auxiliary mobile platform support plate.

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