Omnidirectional impact performance test device for backrest and headrest of automobile seat

Abstract

The utility model relates to an omni-directional impact performance test device for a backrest and a headrest of an automobile seat, which belongs to the technical field of automobile seat test devices and comprises a test board, an impact head, a height adjusting mechanism and an angle adjusting mechanism. The impact head exerts impact force on a backrest and a headrest of an automobile seat, the height adjusting mechanism drives the impact head to move up and down in a vertical plane so as to adjust the installation height of the impact head, the angle adjusting mechanism drives the impact head to rotate in the horizontal plane and the vertical plane, and all-directional impact resistance testing is conducted on the backrest and the headrest of the automobile seat. According to the utility model, the technical problems in the prior art that the application range of seat backrests at different inclination angles is limited, the test positions of the seat backrests and headrests are not comprehensive, and rapid and continuous tests cannot be carried out can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile seat testing devices, in particular to an omnidirectional impact performance testing device for an automobile seat backrest and a headrest. Background Art

[0002] As automobile applications become more and more popular, automobile safety is receiving more and more attention. It is of great significance to evaluate the impact resistance of automobile seats. At present, the omnidirectional impact performance test of automobile seat backs and headrests generally uses a heavy object to fall naturally or a pendulum to impact the automobile seat. There are restrictions on the scope of application of seat backs at different tilt angles, and the test positions of seat backs and headrests are not comprehensive, and rapid and continuous testing is not possible. Summary of the invention

[0003] In view of the various deficiencies in the prior art, an omnidirectional impact performance test device for a car seat back and headrest is proposed to solve the technical problems that the prior art has limited applicability of seat backs at different tilt angles, incomplete test positions of seat backs and headrests, and inability to conduct rapid and continuous testing.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] An omnidirectional impact performance test device for a car seat back and headrest, comprising:

[0006] A test bench, wherein the test bench is provided with a platform for installing a car seat;

[0007] Head impact, which applies impact force to the backrest and headrest of the car seat;

[0008] A height adjustment mechanism connected to the impact head, the height adjustment mechanism drives the impact head to move up and down in a vertical plane to adjust the installation height of the impact head;

[0009] And an angle adjustment mechanism, which is respectively connected to the height adjustment mechanism and the test bench, the angle adjustment mechanism drives the impact head to rotate in the horizontal and vertical planes to perform an all-round impact resistance performance test on the car seat back and headrest.

[0010] The technical solution is further configured such that the angle adjustment mechanism includes a horizontal plane angle adjustment unit, the horizontal plane angle adjustment unit includes a rotating frame and a rotating frame guide platform, the rotating frame guide platform is configured as an arc structure and is configured in a horizontal plane, the rotating frame is configured in a vertical plane and can move along the rotating frame guide platform to change the direction of the impact head on the rotating frame.

[0011] The technical solution is further configured that an arc-shaped guide rail is arranged on the guide platform of the rotating frame, and a positioning guide wheel that can slide along the arc-shaped guide rail is arranged on the rotating frame.

[0012] The technical solution is further configured that a first arc gear is arranged on the guide platform of the rotating frame, and a first adjusting gear meshing with the first arc gear is arranged on the rotating frame.

[0013] The technical solution is further configured that the height adjustment mechanism includes a moving frame, the impact head is rotatably connected to the moving frame, and the moving frame can move up and down along the rotating frame.

[0014] The technical solution is further configured such that the angle adjustment mechanism also includes a vertical angle adjustment unit, and the vertical angle adjustment unit includes a second adjustment gear and a second arc gear that are meshed with each other, the second arc gear is arranged in the vertical plane, and is connected to the movable frame, and the second adjustment gear is connected to the impact head.

[0015] The technical solution is further configured as follows: the impact head includes a reset cylinder, an impact shaft and an impact sleeve which are sequentially arranged from the inside to the outside, the cylinder body end of the reset cylinder is connected to the impact sleeve, the rod body end of the reset cylinder drives the impact shaft to move axially inside the impact sleeve, the head end of the impact shaft extending to the outside of the impact sleeve is provided with an action head, and a reset spring is provided between the impact shaft and the impact sleeve.

[0016] The technical solution is further configured that an electromagnet is also provided inside the impact sleeve, and when the electromagnet is energized, it is magnetically adsorbed to the tail end of the impact shaft that moves axially to contact with it.

[0017] The technical solution is further configured such that an energy storage adjustment component is also provided on the impact sleeve, and the energy storage adjustment component drives the electromagnet to move axially inside the impact sleeve, adjusts the compression amount of the reset spring, and changes the impact force of the action head.

[0018] The technical solution is further configured such that the test bench is provided with an installation position and a test position, and the platform can move between the installation position and the test position.

[0019] The beneficial effects of the utility model are:

[0020] By setting a height adjustment mechanism, the installation height of the impact head can be adjusted to realize the test of the seat back and headrest at any height position; by setting an angle adjustment mechanism, the impact head is driven to rotate in the horizontal and vertical planes, and the impact resistance performance of the car seat back and headrest is tested at any angle in a 360° circumferential direction, which is as close as possible to the actual use conditions of the car seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the omnidirectional impact performance test device for the automobile seat back and headrest in the embodiment of the utility model;

[0022] Figure 2 It is a top view of the omnidirectional impact performance test device for the automobile seat back and headrest in the embodiment of the utility model;

[0023] Figure 3 It is a side view of the omnidirectional impact performance test device for the automobile seat back and headrest in the embodiment of the utility model;

[0024] Figure 4 It is a top view of the impact head obliquely impacting the car seat back and headrest in the embodiment of the utility model;

[0025] Figure 5 It is a front view of the impact head obliquely impacting the car seat back and headrest in the embodiment of the utility model;

[0026] Figure 6 It is a front view of the impact head in the embodiment of the utility model impacting the car seat back and headrest;

[0027] Figure 7 It is a front view of the impact head vertically and downwardly impacting the backrest and headrest of the car seat in the embodiment of the utility model;

[0028] Figure 8 It is a front view of the rotating frame in the embodiment of the utility model;

[0029] Fig. 9 This is a schematic diagram of the interior of the rotating frame in the embodiment of the utility model;

[0030] Fig.10 for Figure 5 Partial schematic diagram at point A in the middle;

[0031] Fig.11 It is a front view of the mobile frame in the embodiment of the utility model;

[0032] Fig.12 It is a side view of the mobile frame in the embodiment of the utility model;

[0033] Fig.13 A longitudinal cross-sectional view of the impact head in the embodiment of the utility model;

[0034] Fig.14 This is an axial side view of the impact shaft in the embodiment of the utility model;

[0035] In the attached figure: 1, installation position; 2, test position; 3, test bench; 4, platform; 5, rotating frame; 6, mobile frame; 7, impact head; 8, rotating frame guide platform; 10, rotating frame adjustment worm gear reducer; 11, rotating frame servo motor; 12, first adjustment gear; 13, screw rod movable seat; 14, screw rod fixed seat; 15, slide rail; 16, slider; 17, positioning guide wheel; 18, mobile frame worm gear reducer; 19, mobile frame servo motor; 20, impact head servo motor; 21, impact head angle adjustment worm gear reducer; 23, second adjustment gear ; 24. Second arc gear; 25. Impact force adjustment servo motor worm reducer; 26. Impact force adjustment gear; 27. Axial positioning pin; 28. Guide block; 29. ​​Reset spring; 30. Impact sleeve; 31. Impact shaft; 32. Cylinder seat plate; 33. Screw shaft; 34. Screw sleeve; 35. End cylindrical roller bearing; 36. Electromagnet; 37. Reset cylinder; 38. Buffer pad; 39. Piezoelectric pressure sensor; 40. Action head; 41. Adjustment screw; 42. Arc guide rail; 43. First arc gear; 44. Spring compression adjustment sleeve; 45. Long slot opening. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the creation of the present invention.

[0037] According to the embodiment of the utility model, a vehicle seat back and headrest omnidirectional impact performance test device is provided. Figures 1 to 3 , including: a test bench 3, an impact head 7, a height adjustment mechanism and an angle adjustment mechanism, wherein the test bench 3 is provided with a platform 4 for installing a car seat; the impact head 7 applies an impact force to the backrest and headrest of the car seat; the height adjustment mechanism is connected to the impact head 7, and the height adjustment mechanism drives the impact head 7 to move up and down in the vertical plane to adjust the installation height of the impact head 7; the angle adjustment mechanism is respectively connected to the height adjustment mechanism and the test bench 3, and the angle adjustment mechanism drives the impact head 7 to rotate in the horizontal and vertical planes to perform a full-scale impact resistance performance test on the car seat back and headrest.

[0038] It should be noted that by setting a height adjustment mechanism, the installation height of the impact head 7 can be adjusted to achieve the test of the seat back and headrest at any height position; by setting an angle adjustment mechanism, the impact head 7 can be driven to rotate in the horizontal and vertical planes to perform a 360° circumferential and all-round impact resistance test on the car seat back and headrest at any angle, which is as close to the actual use condition of the car seat as possible. Specifically, the impact head 7 can hit the car seat back and headrest from the oblique front, please refer to Figure 4 , Figure 5 ; The impact head 7 can also hit the car seat back and headrest from the front, please refer to Figure 6 The impact head 7 can also hit the car seat back and headrest from above, please refer to Figure 7 .

[0039] In the vehicle seat back and headrest omnidirectional impact performance test device of this embodiment, please refer to Figure 1 , Figure 2 as well as Figure 4 The angle adjustment mechanism includes a horizontal plane angle adjustment unit, and the horizontal plane angle adjustment unit includes a rotating frame 5 and a rotating frame guide platform 8. The rotating frame guide platform 8 is arranged as an arc structure and is arranged in a horizontal plane. The rotating frame 5 is arranged in a vertical plane and can move along the rotating frame guide platform 8 to change the direction of the impact head 7 on the rotating frame 5.

[0040] It should be noted that the rotating frame guide platform 8 is arranged on the test bench 3, and the rotating frame 5 is perpendicular to the rotating frame guide platform 8. When the rotating frame 5 moves along the rotating frame guide platform 8, the relative position of the impact head 7 and the rotating frame guide platform 8 can be changed, thereby changing the direction of the impact head 7 to impact different parts of the car seat back and headrest.

[0041] In the vehicle seat back and headrest omnidirectional impact performance test device of this embodiment, please refer to Figures 1 to 10 The rotating frame guide platform 8 is provided with an arc guide rail 42 , and the rotating frame 5 is provided with a positioning guide wheel 17 that can slide along the arc guide rail 42 .

[0042] It should be noted that a positioning guide wheel 17 is provided on the bottom support plate of the rotating frame 5. The rotating frame 5 can slide around the center of the arc guide rail 42 with an angle range of 0°-180°. By changing the installation direction of the car seat, the car seat can be tested at any position in the entire circumference. During the rotation, the impact head 7 is always aligned with the longitudinal axis of the center of the circle. A limiting groove is provided on the side of the arc guide rail 42, and the positioning guide wheel 17 is disc-shaped and limited in both directions in the up and down directions.

[0043] In the vehicle seat back and headrest omnidirectional impact performance test device of this embodiment, please refer to Figures 1 to 10 A first arc gear 43 is disposed on the rotating frame guide platform 8 , and a first adjusting gear 12 meshing with the first arc gear 43 is disposed on the rotating frame 5 .

[0044] It should be noted that a rotating frame adjusting worm gear reducer 10 and a rotating frame servo motor 11 are provided on the bottom support plate of the rotating frame 5. The output shaft of the rotating frame adjusting worm gear reducer 10 is connected to the first adjusting gear 12, and the first adjusting gear 12 is meshed with the first arc gear 43. The rotating frame servo motor 11 drives the first adjusting gear 12 to drive the rotating frame 5 to rotate around the center of the first arc gear 43.

[0045] In the present embodiment, the vehicle seat back and headrest omnidirectional impact performance test device is shown in FIG. Figures 1 to 12 The height adjustment mechanism includes a moving frame 6, the impact head 7 is rotatably connected to the moving frame 6, and the moving frame 6 can move up and down along the rotating frame 5.

[0046] Specifically, the mobile frame 6 is located inside the rotating frame 5, and is connected to the rotating frame 5 through a slide rail 15 and a slider 16; the rotating frame 5 is provided with a mobile frame worm gear reducer 18 and a mobile frame servo motor 19 which are transmission-connected, and the output end of the mobile frame worm gear reducer 18 is connected with an adjusting screw 41, which is arranged along the vertical direction, and a screw fixing seat 14 and a screw movable seat 13 are provided on the adjusting screw 41, the screw fixing seat 14 is connected to the rotating frame 5, and the screw movable seat 13 is connected to the mobile frame 6.

[0047] It should be noted that the adjusting screw 41 is driven to rotate by the mobile frame servo motor 19 and the mobile frame worm gear reducer 18, which pushes the screw movable seat 13 and the mobile frame 6 to rise or fall synchronously, thereby meeting the testing requirements for different height positions of the seat back.

[0048] In the present embodiment, the vehicle seat back and headrest omnidirectional impact performance test device is shown in FIG. Figures 1 to 12 The angle adjustment mechanism also includes a vertical angle adjustment unit, which includes a second adjustment gear 23 and a second arc gear 24 that are meshed with each other. The second arc gear 24 is arranged in the vertical plane and is connected to the moving frame 6. The second adjustment gear 23 is connected to the impact head 7.

[0049] Specifically, the impact head 7 is provided with a transmission-connected impact head servo motor 20 and an impact head angle adjustment worm gear reducer 21, the output end of the impact head angle adjustment worm gear reducer 21 is connected to the second adjustment gear 23, and the second adjustment gear 23 is meshed with the second arc gear 24. The impact head 7 is a cylindrical mechanism, which is provided with a support rotation shaft, and the mobile frame 6 is provided with a support rotation hole, and the support rotation shaft passes through the support rotation hole.

[0050] It should be noted that, by driving the second adjusting gear 23 to rotate through the impact head servo motor 20 and the impact head angle adjustment worm gear reducer 21, the second adjusting gear 23 is moved along the second arc gear 24, driving the impact head 7 to rotate around the supporting rotation axis. The posture of the impact head 7 can be converted from a horizontal state to a vertical state, and can be positioned at any angle between the horizontal state and the vertical state, thereby realizing the pitch angle adjustment of the impact head 7.

[0051] In the present embodiment, the vehicle seat back and headrest omnidirectional impact performance test device is shown in FIG. Figures 1 to 14 The impact head 7 includes a reset cylinder 37, an impact shaft 31 and an impact sleeve 30 which are sequentially arranged from the inside to the outside. The cylinder end of the reset cylinder 37 is connected to the impact sleeve 30. The rod end of the reset cylinder 37 drives the impact shaft to move axially inside the impact sleeve 30. The head end of the impact shaft 31 extending to the outside of the impact sleeve 30 is provided with an action head 40, and a reset spring 29 is provided between the impact shaft 31 and the impact sleeve 30.

[0052] Specifically, an impact shaft 31 is arranged inside the reset spring 29, a guide inner hole is arranged inside the impact shaft 31, and a reset cylinder 37 is arranged in the guide inner hole; the front end of the impact shaft 31 is connected to a fixed piezoelectric pressure sensor 39, and the front end of the piezoelectric pressure sensor 39 is connected to an acting head 40; a guide block 28 is arranged at the rod end of the reset cylinder 37, and the guide block 28 and the guide inner hole are not connected; a long slot opening 45 is provided on the impact shaft 31, and a cylinder seat plate 32 is arranged at the cylinder end of the reset cylinder 37, and the cylinder seat plate 32 passes through the long slot opening 45 and abuts against the end of the impact sleeve 30; the cylinder seat plate 32 has a threaded fixing hole, and the tail thread of the reset cylinder 37 is screwed and fixed to the threaded fixing hole of the cylinder seat plate 32.

[0053] It should be noted that when the reset cylinder 37 is connected to high-pressure gas, the rod end of the reset cylinder 37 extends out, and the guide block 28 pushes the impact shaft 31 to move backward, while compressing the reset spring 29 to store the impact energy.

[0054] In the present embodiment, the vehicle seat back and headrest omnidirectional impact performance test device is shown in FIG. Figure 1 An electromagnet 36 is also provided inside the impact sleeve 30. When the electromagnet 36 is energized, it is magnetically attracted to the tail end of the impact shaft 31 that moves axially to contact with it.

[0055] It should be noted that when the tail end of the impact shaft 31 contacts the electromagnet 36, the electromagnet 36 is powered to generate magnetic force, which attracts the impact shaft 31, and then the rod end of the reset cylinder 37 retracts to complete the impact test preparation. The electromagnet 36 suction force is released, and the impact shaft 31 is pushed forward by the reset spring 29 to quickly pop up and hit the seat position to be tested. A buffer pad 38 is provided between the impact shaft 31 and the impact sleeve 30. After the impact is completed, the data of the piezoelectric pressure sensor 39 can be read. By reading and recording the value of the piezoelectric pressure sensor 39, the impact performance of the car seat back and headrest can be analyzed.

[0056] In the present embodiment, the vehicle seat back and headrest omnidirectional impact performance test device is shown in FIG. Figures 1 to 14 The impact sleeve 30 is also provided with an energy storage adjustment component, which drives the electromagnet 36 to move axially inside the impact sleeve 30, adjusts the compression amount of the reset spring 29, and changes the impact force of the action head 40.

[0057] Specifically, the energy storage adjustment component includes a spring compression adjustment sleeve 44 and a screw sleeve 34. The spring compression adjustment sleeve 44 is located at the rear end of the impact shaft 31, and the electromagnet 36 is located at the bottom end of the spring compression adjustment sleeve 44. The spring compression adjustment sleeve 44 is against the end of the reset spring 29; a screw shaft 33 is arranged on the spring compression adjustment sleeve 44, and a rotatable screw sleeve 34 is arranged on the periphery of the screw shaft 33; the large end of the screw sleeve 34 is located inside the impact sleeve 30, and a circumferential gear is arranged on the outer cylindrical surface of the large end, and end cylindrical roller bearings 35 are arranged on the two end faces of the large end outer cylinder of the screw sleeve 34, and the end cylindrical roller bearings 35 They are respectively pressed and contacted with the inner bottom surface of the impact sleeve 30 and the outer end surface of the spring compression adjustment sleeve 44; the spring compression adjustment sleeve 44 is provided with an axial limit groove and an axial positioning pin 27, the axial positioning pin 27 passes through the side wall of the impact sleeve 30 and is embedded in the axial limit groove, to ensure that the spring compression adjustment sleeve 44 can only move axially but not rotate circumferentially; an impact force adjustment servo motor worm gear reducer 25 is provided on the bottom surface of the impact sleeve 30, and an impact force adjustment gear 26 is provided on the output shaft of the impact force adjustment servo motor worm gear reducer 25, and the impact force adjustment gear 26 is meshed with the circumferential gear on the large end outer cylindrical surface of the screw sleeve 34.

[0058] It should be noted that, through the impact force adjustment servo motor worm gear reducer 25, the impact force adjustment gear 26 and the circumferential gear, the spring compression adjustment sleeve 44 can be moved back and forth along the axial direction, so as to adjust the compression of the reset spring 29 and change the impact force of the action head 40; the impact head 7 can continuously carry out impact tests, automatically complete the impact energy storage preparation, adjust the impact angle, adjust the impact force and read the instantaneous impact pressure.

[0059] In the vehicle seat back and headrest omnidirectional impact performance test device of this embodiment, please refer to Figure 1 The test bench is provided with an installation position 1 and a test position 2 , and the platform 4 can move between the installation position 1 and the test position 2 .

[0060] It should be noted that the safety of the tester and the convenience of operation are improved by separating the installation position 1 from the test position 2. Preferably, a servo motor, a reducer and a lead screw combination structure are used to drive the platform 4 to move.

[0061] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. An omnidirectional impact performance test device for automobile seat backs and headrests, characterized in that: include: A test bench, wherein the test bench is provided with a platform for installing a car seat; Head impact, which applies impact force to the backrest and headrest of the car seat; A height adjustment mechanism connected to the impact head, the height adjustment mechanism drives the impact head to move up and down in a vertical plane to adjust the installation height of the impact head; And an angle adjustment mechanism, which is respectively connected to the height adjustment mechanism and the test bench, the angle adjustment mechanism drives the impact head to rotate in the horizontal and vertical planes to perform an all-round impact resistance performance test on the car seat back and headrest.

2. The omnidirectional impact performance test device for a car seat back and headrest according to claim 1, characterized in that: The angle adjustment mechanism includes a horizontal plane angle adjustment unit, which includes a rotating frame and a rotating frame guide platform. The rotating frame guide platform is arranged in an arc structure and is arranged in a horizontal plane. The rotating frame is arranged in a vertical plane and can move along the rotating frame guide platform to change the direction of the impact head on the rotating frame.

3. The omnidirectional impact performance test device for a car seat back and headrest according to claim 2, characterized in that: The guide platform of the rotating frame is provided with an arc-shaped guide rail, and the rotating frame is provided with a positioning guide wheel which can slide along the arc-shaped guide rail.

4. The omnidirectional impact performance test device for a car seat back and headrest according to claim 2, characterized in that: A first arc gear is arranged on the guide platform of the rotating frame, and a first adjusting gear meshing with the first arc gear is arranged on the rotating frame.

5. An omnidirectional impact performance test device for a vehicle seat back and headrest according to any one of claims 2 to 4, characterized in that: The height adjustment mechanism comprises a moving frame, the impact head is rotatably connected to the moving frame, and the moving frame can move up and down along the rotating frame.

6. The omnidirectional impact performance test device for automobile seat back and headrest according to claim 5, characterized in that: The angle adjustment mechanism also includes a vertical angle adjustment unit, which includes a second adjustment gear and a second arc gear that are meshed with each other. The second arc gear is arranged in the vertical plane and is connected to the moving frame. The second adjustment gear is connected to the impact head.

7. The omnidirectional impact performance test device for a car seat back and headrest according to claim 1, characterized in that: The impact head includes a reset cylinder, an impact shaft and an impact sleeve which are sequentially arranged from the inside to the outside. The cylinder body end of the reset cylinder is connected to the impact sleeve, and the rod body end of the reset cylinder drives the impact shaft to move axially inside the impact sleeve. The head end of the impact shaft extending to the outside of the impact sleeve is provided with an action head, and a reset spring is provided between the impact shaft and the impact sleeve.

8. The omnidirectional impact performance test device for a vehicle seat back and headrest according to claim 7, characterized in that: An electromagnet is also provided inside the impact sleeve. When the electromagnet is energized, it is magnetically adsorbed to the tail end of the impact shaft that moves axially to contact with the electromagnet.

9. The omnidirectional impact performance test device for automobile seat back and headrest according to claim 8, characterized in that: The impact sleeve is also provided with an energy storage adjustment component, which drives the electromagnet to move axially inside the impact sleeve, adjusts the compression amount of the return spring, and changes the impact force of the action head.

10. The omnidirectional impact performance test device for automobile seat back and headrest according to claim 1, characterized in that: The test bench is provided with an installation position and a test position, and the platform can move between the installation position and the test position.

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