Seat framework noise detection equipment

Abstract

The utility model discloses a seat framework noise detection device, which belongs to the technical field of seat framework detection and comprises a base station. The right end of the base table is rotationally connected with the right end of the inclined moving frame; a first hydraulic cylinder is rotationally mounted on the left side of the base table, and the output end of the first hydraulic cylinder is rotationally connected with the left side of the inclined moving frame; a driving assembly is mounted on the inclined moving frame; a simulation mechanism used for simulating a bumpy road section is installed on the inclined moving frame and the driving assembly. The simulation mechanism comprises a floating installation assembly and a simulation assembly, the floating installation assembly is installed on the driving assembly, and the simulation assembly is installed on the lower side of the inclined moving frame; the soundproof box is fixedly installed on the floating installation assembly, a fixing frame is fixedly installed in the soundproof box, and a to-be-detected seat framework is fixedly installed on the fixing frame through bolts; a bin door of the soundproof box is arranged on the front side of the soundproof box. And a noise detector is fixedly mounted in the soundproof box. Through the mode, the noise of the seat framework when an automobile runs on flat road surfaces and bumpy road surfaces with different gradients is simulated.

Description

Technical Field

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

[0002] The seat frame of an automobile is composed of multiple components. When the automobile is running, relative movement may occur between the components, resulting in noise during driving. To improve the comfort of users, after the production of the automobile seat frame is completed, it is necessary to detect the noise of the seat frame under various driving conditions.

[0003] For example, Chinese Patent CN219060426U discloses a noise detection and sound absorption chamber. An absorption device and a sound absorption device composed of sound absorption plates are arranged on the bottom wall of the sound absorption chamber to isolate external noise. The noise detector in the sound absorption chamber can accurately detect the indoor noise.

[0004] However, the directions of the relative acting forces between the components of the automobile seat frame are different under different road conditions. The relative acting forces between the components of the seat frame are different on a flat road surface and a bumpy road condition. It is difficult for this sound absorption chamber to simulate various road conditions and difficult to detect the noise generated by the automobile seat frame when the automobile is driving under different road conditions.

[0005] Based on this, the utility model designs a noise detection device for a seat frame to solve the above problems. Content of the Utility Model

[0006] In view of the above-mentioned drawbacks of the prior art, the utility model provides a noise detection device for a seat frame.

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0008] A noise detection device for a seat frame includes a base;

[0009] The right end of the base is rotatably connected to the right end of the inclined moving frame; a first hydraulic cylinder is rotatably installed on the left side of the base, and the output end of the first hydraulic cylinder is rotatably connected to the left side of the inclined moving frame; a driving component is installed on the inclined moving frame; a simulation mechanism for simulating a bumpy road section is installed on the inclined moving frame and the driving component; the simulation mechanism includes a floating installation component and a simulation component, the floating installation component is installed on the driving component, and the simulation component is installed on the lower side of the inclined moving frame;

[0010] The sound insulation box is fixedly installed on the floating installation component. A fixing frame is fixedly installed in the sound insulation box. The seat frame to be detected is fixedly installed on the fixing frame through bolts; the hatch of the sound insulation box is arranged on the front side of the sound insulation box; a noise detector is fixedly installed in the sound insulation box.

[0011] Further, the tilting frame includes a support plate, a lower support frame and an upper support frame. The right end of the support plate is rotatably installed at the right end of the base table, and the bottom left side of the support plate is rotatably connected to the output end of the first hydraulic cylinder; the lower support frame is fixedly installed on the upper side of the support plate, and the upper support frame is fixedly installed on the upper side of the lower support frame.

[0012] Further, the driving assembly is installed on the lower support frame, and the simulation assembly is installed on the support plate and the lower support frame.

[0013] Further, the driving assembly includes a moving cylinder, a moving frame and lower support wheels. The moving cylinder is fixedly installed at the left end of the lower support frame, the output end of the moving cylinder is fixedly connected to the lower side of the moving frame, and a plurality of lower support wheels are symmetrically and rotatably installed on the lower side of the moving frame; the lower support wheels are in rolling connection with the lower support frame.

[0014] Further, the driving assembly further includes upper support wheels. A plurality of upper support wheels are symmetrically and rotatably installed on the upper side of the moving frame, and the upper support wheels are in rolling connection with the upper support frame.

[0015] Further, there are two sets of floating mounting assemblies, and the two sets of floating mounting assemblies are symmetrically installed on the upper and lower sides of the moving frame; the sound insulation box is fixedly installed between the two sets of floating mounting assemblies.

[0016] Further, the floating mounting assembly includes a mounting plate, a guide rod, a spring and a simulation wheel. The mounting plate is fixedly installed on the sound insulation box, and guide rods are symmetrically and fixedly installed on the moving frame; the guide rods are in limit sliding connection with the mounting plate; the spring is sleeved outside the guide rod, one end of the spring is fixedly connected to the mounting plate, and the other end of the spring is fixedly connected to the moving frame; simulation wheels are symmetrically and rotatably installed on the lower side of the bottom mounting plate; the distance between the simulation wheels is less than the distance between the lower support wheels.

[0017] Further, the simulation assembly includes a second hydraulic cylinder, a moving plate, guide posts and guide grooves. The second hydraulic cylinder is fixedly installed on the lower side of the support plate, and the output end of the second hydraulic cylinder passes through the support plate and is fixedly connected to the middle of the moving plate; the moving plate is located between the support plate and the lower support frame; a plurality of guide posts are equidistantly and uniformly fixedly installed on the moving plate; a plurality of through guide grooves are formed on the lower support frame, and the guide posts are in limit sliding connection with the guide grooves; the width of the moving plate is less than the distance between the lower support wheels.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. The moving cylinder drives the sound insulation box to move through the floating mounting assembly, and provides acceleration and deceleration for the sound insulation box through the moving cylinder, so that the vehicle is in a driving state of simulating acceleration and deceleration. During this process, external noise is isolated by the sound insulation box, and the internal noise of the sound insulation box is detected by the noise detector to detect the noise of the seat frame during acceleration and deceleration; at the same time, the first hydraulic cylinder can be operated to drive the inclined frame to rotate to simulate road surfaces with different slopes, and the noise of the seat frame when the vehicle is driving on flat road surfaces with different slopes can be detected; at the same time, at different slopes, the simulation assembly can be operated to simulate bumpy road surfaces at different slopes, and the noise of the seat frame when the vehicle is accelerating or decelerating on road surfaces with different slopes can be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0020] Figure 1 is a three-dimensional view of a seat frame noise detection device of the present utility model Figure 1 ;

[0021] Figure 2 is a three-dimensional view of a seat frame noise detection device of the present utility model Figure 2 ;

[0022] Figure 3 is a front view of a seat frame noise detection device of the present utility model;

[0023] Figure 4 is a sectional view along the Figure 3 A-A direction of

[0024] Figure 5 is Figure 4 an enlarged view of B in

[0025] The reference numerals in the drawings respectively represent:

[0026] 1. Base; 11. First hydraulic cylinder; 2. Inclined moving frame; 21. Support plate; 22. Lower support frame; 23. Upper support frame; 3. Driving assembly; 31. Moving cylinder; 32. Moving frame; 33. Lower support wheel; 34. Upper support wheel; 4. Simulation mechanism; 41. Floating mounting assembly; 411. Mounting plate; 412. Guide rod; 413. Spring; 414. Simulation wheel; 42. Simulation component; 421. Second hydraulic cylinder; 422. Moving plate; 423. Guide post; 424. Guide groove; 5. Sound insulation box; 51. Fixed frame; 6. Noise detector. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] The "left", "right", "front", "rear", "upper" and "lower" mentioned in the following description are oriented in the perspective direction of the front view.

[0029] Embodiment 1: In some embodiments, please refer to the Figures 1 - 4 of the accompanying drawings of the specification. A noise detection device for a seat frame includes a base 1;

[0030] The right end of the base 1 is rotatably connected to the right end of the inclined moving frame 2; the left side of the base 1 is rotatably installed with a first hydraulic cylinder 11, and the output end of the first hydraulic cylinder 11 is rotatably connected to the left side of the inclined moving frame 2; a driving assembly 3 is installed on the inclined moving frame 2; a simulation mechanism 4 for simulating a bumpy road section is installed on the inclined moving frame 2 and the driving assembly 3; the simulation mechanism 4 includes a floating mounting assembly 41 and a simulation component 42, the floating mounting assembly 41 is installed on the driving assembly 3, and the simulation component 42 is installed on the lower side of the inclined moving frame 2;

[0031] The sound insulation box 5 is fixedly installed on the floating mounting assembly 41, a fixed frame 51 is fixedly installed in the sound insulation box 5, and the seat frame to be detected is fixedly installed on the fixed frame 51 by bolts; the door of the sound insulation box 5 is arranged on the front side of the sound insulation box 5; a noise detector 6 is fixedly installed in the sound insulation box 5.

[0032] In this embodiment, when the seat frame noise detection device is working properly, open the door of the sound insulation box 5, fix and install the seat frame on the fixing frame 51 through bolts, and close the door; the moving cylinder 31 drives the sound insulation box 5 to move through the floating mounting component 41, and provides acceleration and deceleration for the sound insulation box 5 through the moving cylinder 31, so that the vehicle is in a simulated accelerating and decelerating driving state. During this process, external noise is isolated by the sound insulation box 5, and the internal noise of the sound insulation box 5 is detected by the noise detector 6 to detect the noise of the seat frame during acceleration and deceleration; at the same time, the first hydraulic cylinder 11 can be operated to drive the inclined moving frame 2 to rotate to simulate roads with different slopes, and the noise of the seat frame when the vehicle is driving on flat roads with different slopes can be detected; at the same time, at different slopes, the simulation component 42 can be operated to simulate the noise of the seat frame when the vehicle is accelerating or decelerating on bumpy roads with different slopes.

[0033] Embodiment 2: In some embodiments, as Figures 1 - 5 shown, as a preferred embodiment of the present invention, the inclined moving frame 2 includes a support plate 21, a lower support frame 22 and an upper support frame 23. The right end of the support plate 21 is rotatably installed at the right end of the base 1, and the left bottom of the support plate 21 is rotatably connected to the output end of the first hydraulic cylinder 11; the lower support frame 22 is fixedly installed on the upper side of the support plate 21, and the upper support frame 23 is fixedly installed on the upper side of the lower support frame 22;

[0034] The driving component 3 is installed on the lower support frame 22, and the simulation component 42 is installed on the support plate 21 and the lower support frame 22;

[0035] The driving component 3 includes a moving cylinder 31, a moving frame 32 and lower support wheels 33. The moving cylinder 31 is fixedly installed at the left end of the lower support frame 22, the output end of the moving cylinder 31 is fixedly connected to the lower side of the moving frame 32, and a plurality of lower support wheels 33 are symmetrically and rotatably installed on the lower side of the moving frame 32; the lower support wheels 33 are in rolling connection with the lower support frame 22;

[0036] The driving component 3 further includes upper support wheels 34, and a plurality of upper support wheels 34 are symmetrically and rotatably installed on the upper side of the moving frame 32, and the upper support wheels 34 are in rolling connection with the upper support frame 23;

[0037] Two sets of floating mounting components 41 are provided, and the two sets of floating mounting components 41 are symmetrically installed on the upper and lower sides of the moving frame 32; the sound insulation box 5 is fixedly installed between the two sets of floating mounting components 41;

[0038] The floating mounting assembly 41 includes a mounting plate 411, guide rods 412, springs 413 and simulation wheels 414. The mounting plate 411 is fixedly mounted on the sound insulation box 5, and guide rods 412 are symmetrically and fixedly mounted on the moving frame 32; the guide rods 412 are in limiting sliding connection with the mounting plate 411; the springs 413 are sleeved outside the guide rods 412, one end of each spring 413 is fixedly connected to the mounting plate 411, and the other end of each spring 413 is fixedly connected to the moving frame 32; simulation wheels 414 are symmetrically and rotatably mounted on the lower side of the bottom mounting plate 411; the distance between the simulation wheels 414 is less than the distance between the lower support wheels 33;

[0039] The simulation assembly 42 includes a second hydraulic cylinder 421, a moving plate 422, guide posts 423 and guide grooves 424. The second hydraulic cylinder 421 is fixedly mounted on the lower side of the support plate 21, and the output end of the second hydraulic cylinder 421 passes through the support plate 21 and is fixedly connected to the middle of the moving plate 422; the moving plate 422 is located between the support plate 21 and the lower support frame 22; a plurality of guide posts 423 are fixedly and evenly mounted on the moving plate 422 at equal intervals; a plurality of through guide grooves 424 are formed in the lower support frame 22, and the guide posts 423 are in limiting sliding connection with the guide grooves 424; the width of the moving plate 422 is less than the distance between the lower support wheels 33.

[0040] In this embodiment, when the inclined moving frame 2, the driving assembly 3 and the simulation mechanism 4 are working properly, the moving cylinder 31 drives the moving frame 32 to move. The moving frame 32 moves stably under the supporting action of the lower support wheels 33 and the upper support wheels 34; the movement of the moving frame 32 drives the guide rods 412, the springs 413, the mounting plate 411 and the simulation wheels 414 to move, thereby driving the sound insulation box 5 to move; in the initial state, the guide posts 423 are located in the guide grooves 424, and the driving state of a flat road surface under different slopes can be simulated; the second hydraulic cylinder 421 drives the moving plate 422 to move, the movement of the moving plate 422 drives the guide posts 423 to move, and the guide posts 423 move to the upper side of the lower support frame 22 under the limiting action of the guide grooves 424; at this time, the moving cylinder 31 drives the mounting plate 411, the simulation wheels 414 and the sound insulation box 5 to move through the moving frame 32, the simulation wheels 414 contact the guide posts 423 on the upper side of the lower support frame 22, the guide posts 423 drive the mounting plate 411 to move through the simulation wheels 414, and the mounting plate 411 drives the sound insulation box 5 to move under the cooperation of the guide rods 412 and the springs 413; during this process, the upper support wheels 34 and the guide posts 423 never contact each other. The stability of the equipment is improved through the moving frame 32, the lower support wheels 33, the upper support wheels 34, the lower support frame 22 and the upper support frame 23, and the bumping effect is simulated through the cooperation of the mounting plate 411, the guide rods 412, the springs 413, the simulation wheels 414 and the guide posts 423; thereby cooperating with the sound insulation box 5 and the noise detector 6 to detect the noise of the seat frame when driving under different road conditions.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A seat frame noise detection device, comprising a base (1), characterized in that: The right end of the base (1) is rotatably connected to the right end of the inclined moving frame (2); a first hydraulic cylinder (11) is rotatably installed on the left side of the base (1), and the output end of the first hydraulic cylinder (11) is rotatably connected to the left side of the inclined moving frame (2); a driving component (3) is installed on the inclined moving frame (2); a simulation mechanism (4) for simulating a bumpy road section is installed on the inclined moving frame (2) and the driving component (3); the simulation mechanism (4) includes a floating installation component (41) and a simulation component (42), the floating installation component (41) is installed on the driving component (3), and the simulation component (42) is installed on the lower side of the inclined moving frame (2); A sound insulation box (5) is fixedly installed on the floating installation component (41), a fixing frame (51) is fixedly installed inside the sound insulation box (5), and the seat frame to be detected is fixedly installed on the fixing frame (51) by bolts; the door of the sound insulation box (5) is arranged on the front side of the sound insulation box (5); a noise detector (6) is fixedly installed inside the sound insulation box (5).

2. The seat frame noise detection device according to claim 1, characterized in that, The inclined moving frame (2) includes a support plate (21), a lower support frame (22) and an upper support frame (23), the right end of the support plate (21) is rotatably installed at the right end of the base (1), and the bottom left side of the support plate (21) is rotatably connected to the output end of the first hydraulic cylinder (11); the lower support frame (22) is fixedly installed on the upper side of the support plate (21), and the upper support frame (23) is fixedly installed on the upper side of the lower support frame (22).

3. The seat frame noise detection device according to claim 2, characterized in that, The driving component (3) is installed on the lower support frame (22), and the simulation component (42) is installed on the support plate (21) and the lower support frame (22).

4. The seat frame noise detection device according to claim 3, characterized in that, The driving component (3) includes a moving cylinder (31), a moving frame (32) and lower support wheels (33), the moving cylinder (31) is fixedly installed at the left end of the lower support frame (22), the output end of the moving cylinder (31) is fixedly connected to the lower side of the moving frame (32), and a plurality of lower support wheels (33) are symmetrically and rotatably installed on the lower side of the moving frame (32); the lower support wheels (33) are in rolling connection with the lower support frame (22).

5. The seat frame noise detection device according to claim 4, characterized in that, The driving component (3) further includes upper support wheels (34), a plurality of upper support wheels (34) are symmetrically and rotatably installed on the upper side of the moving frame (32), and the upper support wheels (34) are in rolling connection with the upper support frame (23).

6. The seat frame noise detection device according to claim 5, characterized in that, There are two groups of floating installation components (41), and the two groups of floating installation components (41) are symmetrically installed on the upper and lower sides of the moving frame (32); the sound insulation box (5) is fixedly installed between the two groups of floating installation components (41).

7. The seat frame noise detection device according to claim 6, characterized in that, The floating mounting assembly (41) includes a mounting plate (411), guide rods (412), springs (413) and simulation wheels (414). The mounting plate (411) is fixedly mounted on the sound insulation box (5), and guide rods (412) are symmetrically and fixedly mounted on the moving frame (32); the guide rods (412) are in limit sliding connection with the mounting plate (411); the springs (413) are sleeved outside the guide rods (412), one end of each spring (413) is fixedly connected to the mounting plate (411), and the other end of each spring (413) is fixedly connected to the moving frame (32); simulation wheels (414) are symmetrically and rotatably mounted on the lower side of the bottom mounting plate (411); the distance between the simulation wheels (414) is less than the distance between the lower support wheels (33).

8. The seat frame noise detection device according to claim 7, characterized in that, The simulation assembly (42) includes a second hydraulic cylinder (421), a moving plate (422), guide posts (423) and guide grooves (424). The second hydraulic cylinder (421) is fixedly mounted on the lower side of the support plate (21), and the output end of the second hydraulic cylinder (421) passes through the support plate (21) and is fixedly connected to the middle of the moving plate (422); the moving plate (422) is located between the support plate (21) and the lower support frame (22); a plurality of guide posts (423) are evenly and fixedly mounted on the moving plate (422) at equal intervals; a plurality of through guide grooves (424) are formed in the lower support frame (22), and the guide posts (423) are in limit sliding connection with the guide grooves (424); the width of the moving plate (422) is less than the distance between the lower support wheels (33).

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