Automobile headrest drawing force testing device

Abstract

The utility model relates to the technical field of automobile headrest drawing force testing, in particular to an automobile headrest drawing force testing device which comprises a clamping base, clamping plate lead screws are fixedly connected to the two sides in the clamping base, a push plate lead screw is fixedly connected to the middle in the clamping base, and a push plate support is fixedly connected to the nut part of the push plate lead screw. Connecting plates are hinged to the two sides of the push plate support, guide rod push plates are hinged to the other sides of the connecting plates, the force applying device comprises a pressure plate, limiting plates are fixedly connected to the two sides of the pressure plate, transmission rods are fixedly connected to the outer sides of the limiting plates, and a transmission device is arranged at one end of each transmission rod; the drawing device has the beneficial effects that the motor is matched with the lead screw to drive the clamping plate and the push plate to approach the headrest rod so as to quickly clamp the headrest rod, the working efficiency is improved, the transmission rod is driven by the transmission lead screw to move upwards in parallel in the direction of the transmission shell so as to apply drawing force to the headrest rod, and compared with manual drawing, the angle deviation is less likely to be generated.

Description

Technical Field

[0001] This utility model relates to the field of automotive headrest pull-out force testing, specifically an automotive headrest pull-out force testing device. Background Technology

[0002] As cars become increasingly common, people's requirements for them are no longer limited to transportation. The functional needs of the car interior are gradually increasing. Car headrests are the most common functional components in the car's cabin. Car headrests are usually connected to the car seats via guide rods. Drivers or passengers can adjust the headrest height by using a button to unlock and pull the guide rod. Therefore, the magnitude of the friction force during headrest pulling needs to be considered in the production of car headrests. Traditional car headrest pull-out force testing relies on manual pulling tests, which is not only time-consuming and labor-intensive but also prone to angular deviations, affecting the test results. Utility Model Content

[0003] The purpose of this invention is to provide a device for testing the pull-out force of an automotive headrest, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a car headrest pull-out force testing device, comprising a clamping device, a clamping base, a motor fixedly connected inside the clamping base, clamping screws fixedly connected to both sides inside the clamping base, a guide rod clamping plate fixedly connected to the nut portion of the clamping screw, a push plate screw fixedly connected to the middle inside the clamping base, a push plate support fixedly connected to the nut portion of the push plate screw, connecting plates hinged to both sides of the push plate support, a guide rod push plate hinged to the other side of the connecting plate, a push plate positioning plate slidably connected to one side of the guide rod push plate, the push plate positioning plate fixedly connected to the outer surface of the push plate screw, a force application device provided below the clamping device, the force application device comprising a pressure plate, a pressure sensor mounting plate provided on one side of the pressure plate, a pressure sensor body fixedly connected to the upper surface of the pressure sensor mounting plate, the upper surface of the pressure sensor body fixedly connected to the lower surface of the clamping base, limit plates fixedly connected to both sides of the pressure plate, guide grooves provided inside the limit plates, a transmission rod fixedly connected to the outer side of the limit plates, and a transmission device provided at one end of the transmission rod.

[0005] Preferably, the transmission device includes a transmission housing, inside which a transmission screw nut portion is fixedly connected to the transmission rod, and a seat positioning device is provided below the transmission housing.

[0006] Preferably, the seat positioning device includes a seat base, with both sides of the seat base rotatably connected to the transmission housing, a seat support fixedly connected to the upper surface of the seat base, a groove opened inside the seat support, a seat clamp slidably connected to the inside of the groove, a seat positioning screw fixedly connected to one side surface of the seat support, and the nut part of the seat positioning screw fixedly connected to the seat clamp.

[0007] Preferably, the clamping plate screw is fixedly connected to a bevel gear, the seat positioning screw is fixedly connected to the bevel gear, the motor rotating rod is fixedly connected to the bevel gear, the clamping plate screw is movably connected to the motor through the engagement of the bevel gears, and the seat positioning screw is movably connected to the motor through the engagement of the bevel gears.

[0008] Preferably, guide strips are fixedly connected to both sides of the clamping base, and the guide strips are slidably connected to the guide groove.

[0009] Preferably, a headrest rod is slidably connected inside the seat body, and one end of the headrest rod is fixedly connected to the headrest body.

[0010] Preferably, the push plate lead screw part is fixedly connected to the motor rotating rod part, and the transmission lead screw part is fixedly connected to the motor rotating rod part.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The present invention proposes a motor and a lead screw that work together to drive the clamping plate and push plate close to the headrest rod, thereby quickly clamping the headrest rod and improving work efficiency. The transmission rod moves parallel upward along the direction of the transmission housing under the drive of the transmission lead screw, thereby applying a pulling force to the headrest rod. Compared with manual pulling, it is less likely to produce angular deviation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the clamping device and the force application device of this utility model when they are separated;

[0014] Figure 2 This is a schematic diagram of the structure of the present invention during operation;

[0015] Figure 3 This is a schematic diagram of the back of the structure of this utility model when it is in operation;

[0016] Figure 4 This is a schematic diagram of the cooperative structure of the seat positioning device and the transmission device of this utility model;

[0017] In the diagram: 1. Clamping base; 2. Motor; 3. Push plate screw; 4. Clamping plate screw; 5. Guide rod clamping plate; 6. Push plate support; 7. Push plate positioning plate; 8. Guide rod push plate; 9. Connecting plate; 10. Pressure sensor mounting plate; 11. Pressure plate; 12. Guide bar; 13. Guide groove; 14. Limiting plate; 15. Bevel gear; 16. Transmission rod; 17. Transmission housing; 18. Seat base; 19. Seat support; 20. Seat clamping plate; 21. Seat body; 22. Headrest rod; 23. Headrest body; 24. Seat positioning screw; 25. Transmission screw; 26. Pressure sensor body. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example 1

[0020] Please see Figures 1-4 This utility model provides a technical solution: a car headrest pull-out force testing device, comprising a clamping device, a clamping base 1, a motor 2 fixedly connected inside the clamping base 1, clamping screws 4 fixedly connected to both sides inside the clamping base 1, guide rod clamping plates 5 fixedly connected to the nut portion of the clamping screws 4, a push plate screw 3 fixedly connected to the middle inside the clamping base 1, a push plate support 6 fixedly connected to the nut portion of the push plate screw 3, connecting plates 9 hinged to both sides of the push plate support 6, a guide rod push plate 8 hinged to the other side of the connecting plate 9, a push plate positioning plate 7 slidably connected to one side of the guide rod push plate 8, and the push plate positioning plate 7 fixedly connected to the outer surface of the push plate screw 3. A force application device is provided below the clamping device, the force application device comprising a pressure plate 11, a pressure sensor mounting plate 10 provided on one side of the pressure plate 11. A pressure sensor body 26 is fixedly connected to the upper surface of the pressure sensor mounting plate 10. The upper surface of the pressure sensor body 26 is fixedly connected to the lower surface of the clamping base 1. Limiting plates 14 are fixedly connected to both sides of the pressure plate 11. A guide groove 13 is opened inside the limiting plate 14. A transmission rod 16 is fixedly connected to the outer side of the limiting plate 14. A transmission device is provided at one end of the transmission rod 16. The clamping screw 4 is set to convert the rotation of the motor 2 into the sliding of the guide rod clamping plate 5. The push plate screw 3 is set to convert the rotation of the motor 2 into the sliding of the push plate support 6. The connecting plate 9 is set to transmit the movement of the push plate support 6. Thus, under the limiting action of the push plate positioning plate 7, the guide rod push plate 8 is driven to slide along the slotted direction of the push plate positioning plate 7. The limiting plate 14 is set to prevent the clamping device from deflecting during the operation.

[0021] Example 2

[0022] Based on Embodiment 1, the transmission device includes a transmission housing 17. Inside the transmission housing 17, a transmission screw 25 is fixedly connected, with the nut portion fixedly connected to the transmission rod 16. A seat positioning device is provided below the transmission housing 17. The seat positioning device includes a seat base 18. The two sides of the seat base 18 are rotatably connected to the transmission housing 17. A seat support 19 is fixedly connected to the upper surface of the seat base 18. A groove is opened inside the seat support 19, and a seat clamp 20 is slidably connected inside the groove. A seat positioning screw 24 is fixedly connected to one side surface of the seat support 19. The nut portion of the seat positioning screw 24 is fixedly connected to the seat clamp 20. The transmission screw 25 is provided to convert the rotation of the motor 2 into the sliding of the transmission rod 16, and the seat positioning screw 24 is provided to convert the rotation of the motor 2 into the sliding of the seat support 19.

[0023] Example 3

[0024] Based on Embodiment 2, the screw portion of the clamping screw 4 is fixedly connected to a bevel gear 15, the screw portion of the seat positioning screw 24 is fixedly connected to the bevel gear 15, the rotating rod portion of the motor 2 is fixedly connected to the bevel gear 15, the screw portion of the clamping screw 4 is movably connected to the motor 2 through the engagement between the bevel gears 15, the screw portion of the seat positioning screw 24 is movably connected to the motor 2 through the engagement between the bevel gears 15, guide bars 12 are fixedly connected to both sides of the clamping base 1, the guide bars 12 are slidably connected to the guide groove 13, a headrest rod 22 is slidably connected inside the seat body 21, one end of the headrest rod 22 is fixedly connected to the headrest body 23, the screw portion of the push plate screw 3 is fixedly connected to the rotating rod portion of the motor 2, and the screw portion of the transmission screw 25 is fixedly connected to the rotating rod portion of the motor 2. The guide groove 13 is provided to cooperate with the guide bar 12 to determine the movement direction of the clamping device.

[0025] In actual use, the seat body 21 is placed on the seat base 18. The motor 2, in conjunction with the bevel gear 15, drives the seat positioning screw 24 to rotate, thereby causing the seat clamping plate 20 to slide towards the seat body 21, thus clamping the seat body 21. Then, the motor 2 in the clamping device, in conjunction with the bevel gear 15, drives the clamping plate screw 4 to rotate, thereby causing the guide rod clamping plate 5 to move towards the headrest rod 22. During this process, the motor 2 drives the push plate screw 3 to rotate, causing the push plate support 6 to slide. Thus, through the transmission action of the connecting plate 9 and the limiting action of the push plate positioning plate 7, the left side is left... The right-hand guide rod push plate 8 moves toward the headrest rod 22. The guide rod clamp plate 5 and the guide rod push plate 8 cooperate to clamp the headrest rod 22. Finally, the motor 2 in the transmission housing 17 drives the transmission screw 25 to rotate, thereby driving the transmission rod 16 to slide upward. The transmission rod 16 drives the pressure plate 11 to apply pressure upward, driving the clamping base 1 to move upward, thereby driving the headrest rod 22 to move upward. During the process, the pressure sensor body 26 between the pressure plate 11 and the clamping base 1 transmits the received pressure data to the external recording device to realize the test recording of the pull-out force.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automotive head restraint pull force testing apparatus, characterized by: The automobile headrest pull-out force testing device includes: A clamping device is provided, comprising a clamping base (1), a motor (2) is fixedly connected inside the clamping base (1), a clamping screw (4) is fixedly connected to both sides inside the clamping base (1), a guide rod clamping plate (5) is fixedly connected to the nut part of the clamping screw (4), a push plate screw (3) is fixedly connected to the middle inside the clamping base (1), a push plate support (6) is fixedly connected to the nut part of the push plate screw (3), a connecting plate (9) is hinged to both sides of the push plate support (6), a guide rod push plate (8) is hinged to the other side of the connecting plate (9), a push plate positioning plate (7) is slidably connected to one side of the guide rod push plate (8), and the push plate positioning plate (7) is fixedly connected to the outer surface of the push plate screw (3). A force application device is provided below the clamping device. A force application device is provided, comprising a pressure plate (11), a pressure sensor mounting plate (10) is provided on one side of the pressure plate (11), a pressure sensor body (26) is fixedly connected to the upper surface of the pressure sensor mounting plate (10), the upper surface of the pressure sensor body (26) is fixedly connected to the lower surface of the clamping base (1), and limit plates (14) are fixedly connected to both sides of the pressure plate (11). A guide groove (13) is provided inside the limit plate (14), and a transmission rod (16) is fixedly connected to the outer side of the limit plate (14). A transmission device is provided at one end of the transmission rod (16).

2. The device of claim 1, wherein: The transmission device includes a transmission housing (17), inside which a transmission screw (25) is fixedly connected. The nut part is fixedly connected to the transmission rod (16), and a seat positioning device is provided below the transmission housing (17).

3. The device of claim 2, wherein: The seat positioning device includes a seat base (18), which is rotatably connected to the transmission housing (17) on both sides. A seat support (19) is fixedly connected to the upper surface of the seat base (18). A groove is provided inside the seat support (19), and a seat clamp (20) is slidably connected to the inside of the groove. A seat positioning screw (24) is fixedly connected to one side surface of the seat support (19), and the nut part of the seat positioning screw (24) is fixedly connected to the seat clamp (20).

4. The device according to claim 1 or 3, characterized in that: The screw part of the clamping screw (4) is fixedly connected to the bevel gear (15), the screw part of the seat positioning screw (24) is fixedly connected to the bevel gear (15), the rotating rod part of the motor (2) is fixedly connected to the bevel gear (15), the screw part of the clamping screw (4) is movably connected to the motor (2) through the cooperation between the bevel gears (15), and the screw part of the seat positioning screw (24) is movably connected to the motor (2) through the cooperation between the bevel gears (15).

5. The device of claim 1, wherein: The clamping base (1) is fixedly connected to guide strips (12) on both sides, and the guide strips (12) are slidably connected to the guide grooves (13).

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