Headrest durability testing device

Abstract

The utility model provides a headrest durability testing device, which comprises a support and a testing mechanism used for adjusting and testing a headrest, and is characterized in that the support comprises a pair of vertical frames and a cross beam erected at the tops of the vertical frames; the testing mechanism comprises a driving electric cylinder, a telescopic belt, a horizontal sliding table, a longitudinal sliding table and a rotary supporting seat. The position of the testing mechanism can be freely adjusted under the action of the horizontal sliding table and the longitudinal sliding table, so that the height and position requirements of different seat headrests are met; moreover, the driving electric cylinder not only can drive the headrest to move up and down, but also can adjust the installation angle of the headrest under the action of the rotary supporting seat, thereby achieving the more comprehensive testing of the headrest. Besides, the headrest is connected to the driving electric cylinder through the telescopic belt, the device is suitable for the headrests of different shapes and sizes, and compared with a clamping structure, the telescopic belt does not cause extra damage to the headrest, so that the test result is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of seat headrest testing, in particular to a headrest durability testing device. Background Art

[0002] As an essential automotive component, the comfort and reliability of car seats are directly related to the safety and riding experience of the driver and passengers. The headrest, used to support the driver's head, can be adjusted based on factors such as height to meet the differentiated needs of individual users. Its ease of use, reliability, and lifespan are becoming increasingly important concerns for automakers, auto parts manufacturers, and users, influencing potential purchases to a certain extent. However, during a vehicle's lifespan of more than ten years, the number of adjustments required for headrests is countless, making their reliability and lifespan after frequent adjustments and retractions crucial considerations. Consequently, many manufacturers and laboratories require durability testing of headrests before they leave the factory.

[0003] There are currently some headrest durability testing devices available on the market, such as Chinese patent CN211576561U, which discloses a vehicle seat headrest adjustment system durability testing device. This device utilizes a frame comprising a base and columns, a headrest fixing assembly comprising a telescopic crossbeam and headrest fixings, and an unlocking bracket to mount the headrest unlocking assembly on the column. This device is capable of performing durability testing on the headrest adjustment system of the vehicle seat being tested. However, these current testing devices are not adaptable to vehicle seat headrests of varying sizes and can only test the vertical adjustment of the headrest, resulting in a relatively limited test and inaccurate test results. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a headrest durability testing device to solve the problem that the headrest durability testing device in the prior art cannot be applied to seat headrests of different sizes and heights, can only be adjusted up and down for testing, and the test results are inaccurate.

[0005] To achieve the above-mentioned and other related purposes, the present invention provides a headrest durability testing device, comprising a bracket and a testing mechanism for headrest adjustment testing, wherein the bracket comprises a pair of vertical frames and a crossbeam mounted on top of the vertical frames;

[0006] The testing mechanism includes a driving electric cylinder, a telescopic belt, a horizontal slide, a longitudinal slide and a rotating support seat. The horizontal slide is slidably arranged on the crossbeam. A first through mounting hole is provided on the horizontal slide. The longitudinal slide is raised and lowered and adjusted in the first mounting hole by a screw lifting assembly; a second through mounting hole is provided on the longitudinal slide. Rotating support seats are respectively provided on both sides of the second mounting hole. The driving electric cylinder is rotatably connected between the two rotating support seats. A connecting plate is provided at the bottom of the driving electric cylinder, and a fixing block for fixing the telescopic belt is provided on the connecting plate.

[0007] In one embodiment of the present invention, a horizontal guide rail is provided on the crossbeam and arranged along the X-axis direction, and the horizontal slide is slidably connected to the horizontal guide rail via a first sliding block at the bottom thereof.

[0008] In one embodiment of the present invention, the screw lifting assembly includes a screw mounting seat, a screw and a threaded seat longitudinally arranged on one side of the first mounting hole. The screw is rotatably arranged in the screw mounting seat, the threaded seat is fixed to one side of the longitudinal slide and the threaded seat is spirally connected to the screw.

[0009] In one embodiment of the present invention, a longitudinal guide rail is provided along the Z-axis direction on the other side of the first mounting hole, and the longitudinal slide is slidably connected to the longitudinal guide rail via a second sliding block connected thereto.

[0010] In one embodiment of the present invention, a rotating handwheel is provided at the bottom of the screw.

[0011] In one embodiment of the present invention, the driving electric cylinder swings in the YZ plane, and the swing angle of the driving electric cylinder relative to the Z axis direction is -60° to 60°.

[0012] In one embodiment of the present invention, the fixing blocks are detachably mounted on the front and rear ends of the connecting plate.

[0013] In one embodiment of the present invention, the connecting plate is further provided with two slots for the telescopic belt to pass through.

[0014] In one embodiment of the present invention, a fixing frame is provided on the bracket, and an unlocking cylinder for unlocking the headrest button is provided on the fixing frame.

[0015] In one embodiment of the present invention, the bracket is mounted on a base plate, and a fixing fixture for fixing the seat is provided on the base plate.

[0016] As described above, the headrest durability testing device of the present invention has the following beneficial effects: the testing mechanism of the present invention can freely adjust its position under the action of the horizontal slide and the longitudinal slide to meet the height and position requirements of the headrests of different seats; and the driving electric cylinder can not only drive the headrest to move up and down, but also adjust the installation angle of the headrest under the action of the rotating support seat, thereby realizing a more comprehensive test of the headrest; in addition, the present invention connects the headrest to the driving electric cylinder through a telescopic belt, which is suitable for headrests of different shapes and sizes, and compared with the clamping structure, the telescopic belt will not cause additional damage to the headrest, making the test results more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a headrest durability testing device disclosed in an embodiment of the present utility model.

[0018] Figure 2 This is a structural diagram of the testing mechanism disclosed in the embodiment of the present utility model.

[0019] Figure 3 This is a schematic diagram of a headrest durability testing device disclosed in an embodiment of the present utility model in use.

[0020] Component number description

[0021] 1. Bracket; 11. Vertical frame; 12. Crossbeam; 121. Horizontal guide rail; 13. Fixed frame; 14. Unlocking cylinder; 2. Base plate; 3. Horizontal slide; 31. First mounting hole; 32. First slider; 4. Longitudinal slide; 41. Second mounting hole; 42. Second slider; 5. Rotating support seat; 6. Driving electric cylinder; 61. Connecting plate; 611. Fixed block; 612. Groove; 613. Telescopic belt; 7. Screw lifting assembly; 71. Screw mounting seat; 72. Screw; 73; Threaded seat; 74. Rotating handwheel; 8. Longitudinal guide rail; 9. Seat; 91. Headrest. DETAILED DESCRIPTION

[0022] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other unless there is a conflict.

[0023] See also Figure 1-2The present invention provides a headrest durability test device, comprising a bracket 1 and a test mechanism for headrest adjustment testing. The bracket 1 comprises a pair of vertical frames 11 and a crossbeam 12 mounted on the top of the vertical frames 11; the test mechanism comprises a driving electric cylinder 6, a telescopic belt 613, a horizontal slide 3, a longitudinal slide 4 and a rotary support seat 5. The horizontal slide 3 is slidably arranged on the crossbeam 12, and a first mounting hole 31 is provided on the horizontal slide 3. The longitudinal slide 4 is raised and lowered in the first mounting hole 31 by a screw lifting assembly 7; a second mounting hole 41 is provided on the longitudinal slide 4, and rotary support seats 5 are respectively provided on both sides of the second mounting hole 41. The driving electric cylinder 6 is rotatably connected between the two rotary support seats 5. A connecting plate 61 is provided at the bottom of the driving electric cylinder 6, and a fixing block 611 for fixing the telescopic belt 613 is provided on the connecting plate 61.

[0024] The testing mechanism of the present invention can freely adjust its position under the action of the horizontal slide 3 and the longitudinal slide 4 to meet the height and position requirements of different seat headrests; and the driving electric cylinder 6 can not only drive the up and down movement of the headrest, but also adjust the installation angle of the headrest 91 under the action of the rotating support seat 5, so as to achieve a more comprehensive test of the headrest; in addition, the present invention connects the headrest to the driving electric cylinder through a telescopic belt, which is suitable for headrests of different shapes and sizes, and compared with the clamping structure, the telescopic belt will not cause additional damage to the headrest, so that the test results are more accurate.

[0025] In order to achieve the sliding of the horizontal slide 3 along the X-axis, a horizontal guide rail 121 arranged along the X-axis direction is provided on the beam 12, and the horizontal slide 3 is slidably connected to the horizontal guide rail 121 through the first slider 32 at the bottom thereof.

[0026] To achieve the lifting and lowering of the longitudinal slide 4 along the Z-axis, the screw lifting assembly 7 includes a screw mounting seat 71, a screw 72, and a threaded seat 73 longitudinally arranged on one side of the first mounting hole 31. The screw 72 is rotatably mounted within the screw mounting seat 71. The threaded seat 73 is fixed to one side of the longitudinal slide 4 and is screwed onto the screw 72. The rotation of the screw 72 drives the position of the threaded seat 73 relative to the screw 72, thereby achieving the lifting and lowering of the longitudinal slide 4.

[0027] Furthermore, in order to make the lifting and lowering of the longitudinal slide 4 more stable and reliable, a longitudinal guide rail 8 along the Z-axis direction is provided on the other side of the first mounting hole 31, and the longitudinal slide 4 is slidably connected to the longitudinal guide rail 8 through the second slider 42 connected thereto.

[0028] Furthermore, in order to facilitate the rotation of the screw rod 72 , a rotating hand wheel 74 is provided at the bottom of the screw rod 72 .

[0029] In this embodiment, the rotating support seat 5 is respectively arranged on both sides of the second mounting hole in the X-axis direction, so that the driving cylinder 6 can swing in the YZ plane, and the swing angle of the driving cylinder 6 relative to the Z-axis direction is -60° to 60°.

[0030] In order to facilitate the replacement of the telescopic belt, the fixing block 611 is detachably mounted on the front and rear ends of the connecting plate 61 .

[0031] Furthermore, the connecting plate 61 is provided with two through slots 612 for the telescopic belt to pass through.

[0032] In this embodiment, a fixing frame 13 is provided on the bracket 1 , and an unlocking cylinder 14 for unlocking a button of the headrest 91 is provided on the fixing frame 13 .

[0033] In this embodiment, the bracket 1 is mounted on a base plate 2 , and a fixing fixture for fixing the seat 9 is provided on the base plate 2 .

[0034] In summary, the testing mechanism of the present invention can freely adjust its position under the action of the horizontal slide and the longitudinal slide to meet the height and position requirements of different seat headrests. Furthermore, the driving electric cylinder not only drives the headrest up and down, but also adjusts the installation angle of the headrest under the action of the rotating support base, achieving a more comprehensive test of the headrest. In addition, the present invention connects the headrest to the driving electric cylinder via a telescopic belt, which is suitable for headrests of different shapes and sizes. Compared with a clamping structure, the telescopic belt does not cause additional damage to the headrest, making the test results more accurate. Therefore, the present invention effectively overcomes the various shortcomings of the existing technology and has high industrial application value.

[0035] Among them, the terms such as "upper", "lower", "left", "right", "front", "back", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any equivalent modifications or variations made by persons skilled in the art without departing from the spirit and technical concepts disclosed herein shall be encompassed by the claims of the present invention.

Claims

1. A headrest durability testing device, characterized in that: The invention comprises a bracket and a test mechanism for testing headrest adjustment, wherein the bracket comprises a pair of vertical frames and a crossbeam mounted on top of the vertical frames; The testing mechanism includes a driving electric cylinder, a telescopic belt, a horizontal slide, a longitudinal slide and a rotating support seat. The horizontal slide is slidably arranged on the crossbeam. A first through mounting hole is provided on the horizontal slide. The longitudinal slide is raised and lowered and adjusted in the first mounting hole by a screw lifting assembly; a second through mounting hole is provided on the longitudinal slide. Rotating support seats are respectively provided on both sides of the second mounting hole. The driving electric cylinder is rotatably connected between the two rotating support seats. A connecting plate is provided at the bottom of the driving electric cylinder, and a fixing block for fixing the telescopic belt is provided on the connecting plate.

2. The headrest durability testing device according to claim 1, characterized in that: The crossbeam is provided with a horizontal guide rail arranged along the X-axis direction, and the horizontal slide is slidably connected to the horizontal guide rail through a first sliding block at the bottom of the horizontal slide.

3. The headrest durability testing device according to claim 1, characterized in that: The screw lifting assembly includes a screw mounting seat, a screw and a threaded seat longitudinally arranged on one side of the first mounting hole. The screw is rotatably arranged in the screw mounting seat. The threaded seat is fixed to one side of the longitudinal slide and the threaded seat is spirally connected to the screw.

4. The headrest durability testing device according to claim 3, characterized in that: A longitudinal guide rail is provided along the Z-axis direction on the other side of the first mounting hole, and the longitudinal slide is slidably connected to the longitudinal guide rail via a second sliding block connected thereto.

5. The headrest durability testing device according to claim 3, characterized in that: A rotating hand wheel is provided at the bottom of the screw.

6. The headrest durability testing device according to claim 1, characterized in that: The driving electric cylinder swings in the YZ plane, and the swing angle of the driving electric cylinder relative to the Z axis direction is -60° to 60°.

7. The headrest durability testing device according to claim 1, characterized in that: The fixing blocks are detachably mounted on the front and rear ends of the connecting plate.

8. The headrest durability testing device according to claim 7, characterized in that: The connecting plate is further provided with two slots for the telescopic belt to pass through.

9. The headrest durability testing device according to any one of claims 1 to 8, characterized in that: A fixing frame is provided on the bracket, and an unlocking cylinder for unlocking a headrest button is provided on the fixing frame.

10. The headrest durability testing device according to any one of claims 1 to 8, characterized in that: The bracket is mounted on a bottom plate, and a fixing fixture for fixing the seat is provided on the bottom plate.

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