Noise detection tool for seat backrest

Abstract

The utility model discloses a noise detection tool for a seat backrest, which comprises a bottom plate, the top of the bottom plate is symmetrically and fixedly connected with two fixing rods, the top of each fixing rod is rotatably connected with a rotating rod, the top of each rotating rod is rotatably connected with an adjusting rod, and the outer side of each adjusting rod is connected with a lifting sleeve through a thread. An upper mounting frame is fixedly connected between the two lifting sleeves, a lower mounting frame is fixedly connected between the two fixing rods, a top plate is fixedly connected between the tops of the two adjusting rods, a hydraulic cylinder is rotationally connected between the top plate and the bottom plate, chain wheels are fixedly connected to the outer sides of the adjusting rods, and the two chain wheels are in transmission connection through a chain; the top of the top plate is fixedly connected with a first driving source, and the output end of the first driving source is fixedly connected with one adjusting rod. Compared with the traditional equipment, the device can simulate different use scenes to detect the backrest noise, so that the noise detection is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of seat noise detection, in particular to a noise detection tool for a seat backrest. Background Art

[0002] Seat back noise testing is a critical quality control step in the design and production of automotive seats. Seat back noise not only affects ride comfort but can also impact the vehicle's overall quietness. Therefore, seat back noise testing plays a crucial role in ensuring product quality and enhancing the user experience.

[0003] Currently, the most commonly used noise detection method in the market is a simple pull test, which applies a certain pulling force to the seat back and detects the noise generated when pulled. However, this detection method has obvious shortcomings. First, a simple pull test cannot fully simulate the complex stress state and dynamic changes of the seat during actual use. During actual use, the seat will experience the combined effects of multiple forces, such as the weight of the passengers, the bumps and vibrations during driving, etc. A simple pull test cannot reflect the noise performance under these complex working conditions, and the accuracy and reliability of the test results are low.

[0004] Therefore, those skilled in the art have proposed a noise detection tool for a seat back. Utility Model Content

[0005] The utility model discloses a noise detection tool for a seat back, aiming to solve the technical problems in the background technology.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A noise detection tool for a seat backrest comprises a base plate, two fixed rods are symmetrically fixedly connected to the top of the base plate, the tops of the fixed rods are rotatably connected to rotating rods, the tops of the rotating rods are rotatably connected to adjusting rods, the outer sides of the adjusting rods are connected to lifting sleeves by threads, an upper mounting frame is fixedly connected between the two lifting sleeves, a lower mounting frame is fixedly connected between the two fixed rods, a top plate is fixedly connected between the tops of the two adjusting rods, and a hydraulic cylinder is rotatably connected between the top plate and the base plate.

[0008] The seat back frame is installed between the upper mounting frame and the lower mounting frame. Then, an external thread is provided on the adjusting rod. Therefore, when the adjusting rod is rotated, the upper mounting frame can be driven to move. Such movement can achieve the purpose of stretching the seat back frame, so that the vibration amplitude and noise level of each structural member of the frame in the pulling state can be detected. Through the movement of the hydraulic cylinder, the rotating rod can be controlled to rotate, so that the rotation of the seat during use can be simulated, thereby detecting the rotation noise of the seat.

[0009] In a preferred solution, sprockets are fixedly connected to the outer sides of the adjusting rods, and the two sprockets are connected via a chain transmission.

[0010] The chain can simultaneously drive the two sprockets to rotate in the same direction, thereby better driving the adjusting rod to rotate.

[0011] In a preferred solution, a first driving source is fixedly connected to the top of the top plate, and an output end of the first driving source is fixedly connected to one of the adjusting rods.

[0012] The first driving source can drive the adjusting rod to rotate, and then the transmission is realized through the chain.

[0013] In a preferred solution, two fixed plates are symmetrically fixedly connected to the top of the top plate, a screw rod is rotatably connected between the two fixed plates, a light rod is fixedly connected between the two fixed plates and below the screw rod, and a moving block is connected between the screw rod and the outer side of the light rod.

[0014] The moving block can be driven to move by the rotation of the lead screw, while the polished rod can provide a stable movement limit for the moving block.

[0015] In a preferred solution, the interior of the moving block is fixedly connected to a damping sleeve, the interior of the damping sleeve is slidably connected to a vertical rod, and the bottom of the vertical rod is fixedly connected to a noise meter.

[0016] By pulling the vertical rod, the position of the noise meter can be controlled, so that noise information at different positions of the backrest can be collected.

[0017] In a preferred solution, a second driving source is fixedly connected to one of the fixed plates, and an output end of the second driving source is fixedly connected to one end of the screw rod.

[0018] The second driving source can be provided to provide rotational power for the screw rod.

[0019] The noise detection tool for seat backs provided by the utility model has the following advantages:

[0020] The adjustment rod is driven to rotate by the first driving source, and the transmission is achieved by the chain, which drives the two sprockets to rotate in the same direction at the same time, thereby driving the adjustment rod to rotate, and then moving the upper mounting frame to achieve the purpose of stretching the seat back frame, so as to detect the vibration amplitude and noise level of the frame in the pulling state. The movement of the hydraulic cylinder controls the rotation of the rotating rod to simulate the rotation of the seat when it is in use. The moving block is driven by the screw rod to move, and the vertical rod is pulled to control the position of the noise meter, collecting noise information at different positions of the backrest, so as to detect the rotation noise of the seat. Compared with traditional equipment, this device can simulate different usage scenarios to detect backrest noise, making noise detection more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is an isometric view of the front structure of a noise detection tool for a seat back proposed in the present invention.

[0022] Figure 2 This is an isometric view of the back structure of a noise detection tool for a seat back proposed in the present invention.

[0023] Figure 3 This is an isometric view of the connection state of a fixed rod and a rotating rod of a noise detection tool for a seat back proposed by the utility model.

[0024] Figure 4 This is an isometric view of the connection state of the moving block of the noise detection tooling for seat backs proposed by the present invention.

[0025] In the accompanying drawings: 1. Base plate; 2. Fixed rod; 3. Rotating rod; 4. Adjusting rod; 5. Lifting sleeve; 6. Upper mounting frame; 7. Lower mounting frame; 8. Top plate; 9. Hydraulic cylinder; 10. Sprocket; 11. Chain; 12. First driving source; 13. Fixed plate; 14. Screw rod; 15. Polish rod; 16. Moving block; 17. Damping sleeve; 18. Vertical rod; 19. Noise meter; 20. Second driving source. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work fall within the scope of protection of the present application.

[0027] The utility model discloses a noise detection tool for a seat back.

[0028] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a noise detection tool for a seat backrest includes a base plate 1, two fixed rods 2 are symmetrically fixedly connected to the top of the base plate 1, the tops of the fixed rods 2 are rotatably connected to the rotating rods 3, the tops of the rotating rods 3 are rotatably connected to the adjusting rods 4, the outer sides of the adjusting rods 4 are connected to the lifting sleeves 5 by threads, an upper mounting frame 6 is fixedly connected between the two lifting sleeves 5, a lower mounting frame 7 is fixedly connected between the two fixed rods 2, a top plate 8 is fixedly connected between the tops of the two adjusting rods 4, and a hydraulic cylinder 9 is rotatably connected between the top plate 8 and the base plate 1;

[0029] In this embodiment: the seat back frame is installed between the upper mounting frame 6 and the lower mounting frame 7. Then, the adjusting rod 4 is provided with an external thread. Therefore, when the adjusting rod 4 is rotated, the upper mounting frame 6 can be driven to move. By such movement, the purpose of stretching the seat back frame can be achieved. In this way, the vibration amplitude and noise level of each structural member of the frame in the pulling state can be detected. By the movement of the hydraulic cylinder 9, the rotation of the rotating rod 3 can be controlled. In this way, the rotation of the seat when in use can be simulated, thereby detecting the rotation noise of the seat.

[0030] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in a preferred embodiment, the outer sides of the adjusting rods 4 are fixedly connected with sprockets 10, and the two sprockets 10 are connected by a chain 11;

[0031] In this embodiment, the chain 11 can simultaneously drive the two sprockets 10 to rotate in the same direction, thereby better driving the adjusting rod 4 to rotate.

[0032] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in a preferred embodiment, a first driving source 12 is fixedly connected to the top of the top plate 8, and an output end of the first driving source 12 is fixedly connected to one of the adjusting rods 4;

[0033] In this embodiment, the first driving source 12 can drive the adjusting rod 4 to rotate, and then the transmission is realized through the chain 11.

[0034] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, in a preferred embodiment, two fixed plates 13 are symmetrically fixedly connected to the top of the top plate 8, a screw rod 14 is rotatably connected between the two fixed plates 13, a polished rod 15 is fixedly connected between the two fixed plates 13 and below the screw rod 14, and a moving block 16 is connected between the screw rod 14 and the outer side of the polished rod 15;

[0035] In this embodiment, the moving block 16 can be driven to move by the rotation of the screw rod 14 , and the polished rod 15 can provide a stable movement limit for the moving block 16 .

[0036] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in a preferred embodiment, a damping sleeve 17 is fixedly connected to the interior of the moving block 16, a vertical rod 18 is slidably connected to the interior of the damping sleeve 17, and a noise meter 19 is fixedly connected to the bottom of the vertical rod 18;

[0037] In this embodiment, the position of the noise meter 19 can be controlled by pulling the vertical rod 18, so that the noise information at different positions of the backrest can be collected.

[0038] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, in a preferred embodiment, a second driving source 20 is fixedly connected to one of the fixing plates 13, and an output end of the second driving source 20 is fixedly connected to one end of the screw rod 14;

[0039] In this embodiment, the second driving source 20 can be provided to provide rotational power for the screw rod 14 .

[0040] Working principle: When in use, the seat back frame is installed between the upper mounting frame 6 and the lower mounting frame 7. Then, an external thread is provided on the adjusting rod 4. Therefore, the adjusting rod 4 can be driven to rotate by the first driving source 12, and then the transmission is realized through the chain 11. The chain 11 can simultaneously drive the two sprockets 10 to rotate in the same direction at the same time, thereby driving the adjusting rod 4 to rotate. When the adjusting rod 4 rotates, it can drive the upper mounting frame 6 to move. Through such movement, the purpose of stretching the seat back frame can be achieved, so that the vibration amplitude and noise level of each structural member of the frame in the pulling state can be detected. The movement of the hydraulic cylinder 9 can be used to control the rotation of the rotating rod 3, so that the rotation of the seat during use can be simulated. The moving block 16 is driven to move by the screw rod 14, and the position of the noise meter 19 can be controlled by pulling the vertical rod 18. In this way, the noise information of different positions of the backrest can be collected, thereby detecting the rotation noise of the seat.

[0041] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The replacements described may be partial structures, devices, or method steps, or they may be complete technical solutions. Any equivalent replacements or modifications based on the technical solution and the concept of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A noise detection tool for a seat back, comprising a bottom plate (1), characterized in that: Two fixed rods (2) are symmetrically fixedly connected to the top of the bottom plate (1); the tops of the fixed rods (2) are rotatably connected to rotating rods (3); the tops of the rotating rods (3) are rotatably connected to adjusting rods (4); the outer sides of the adjusting rods (4) are threadedly connected to lifting sleeves (5); an upper mounting frame (6) is fixedly connected between the two lifting sleeves (5); a lower mounting frame (7) is fixedly connected between the two fixed rods (2); a top plate (8) is fixedly connected between the tops of the two adjusting rods (4); and a hydraulic cylinder (9) is rotatably connected between the top plate (8) and the bottom plate (1).

2. The noise detection tool for a seat back according to claim 1, characterized in that: The outer sides of the adjusting rods (4) are fixedly connected with sprockets (10), and the two sprockets (10) are connected in transmission via a chain (11).

3. The noise detection tool for a seat back according to claim 1, characterized in that: A first driving source (12) is fixedly connected to the top of the top plate (8), and an output end of the first driving source (12) is fixedly connected to one of the adjusting rods (4).

4. The noise detection tool for a seat back according to claim 1, characterized in that: Two fixed plates (13) are symmetrically fixedly connected to the top of the top plate (8); a screw rod (14) is rotatably connected between the two fixed plates (13); a light rod (15) is fixedly connected between the two fixed plates (13) and below the screw rod (14); and a moving block (16) is connected between the outer sides of the screw rod (14) and the light rod (15).

5. The noise detection tool for a seat back according to claim 4, characterized in that: The interior of the moving block (16) is fixedly connected to a damping sleeve (17), the interior of the damping sleeve (17) is slidably connected to a vertical rod (18), and the bottom of the vertical rod (18) is fixedly connected to a noise meter (19).

6. The noise detection tool for a seat back according to claim 4, characterized in that: A second driving source (20) is fixedly connected to one of the fixed plates (13), and an output end of the second driving source (20) is fixedly connected to one end of the screw rod (14).

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