A mechanism for detecting abnormal noise of a webbing retractor

Abstract

The utility model relates to mechanical fault diagnosis technical field, concretely discloses a kind of ribbon retractor abnormal sound detection mechanism, including base, positioning clamping mechanism and detection assembly;Positioning clamping mechanism includes two positioning components oppositely arranged, first positioning component is connected with base, and second positioning component is connected with first driving part;The opposite side of two positioning components is provided with positioning recess;Detection assembly includes two first vibration sensors, second vibration sensor and second driving part;Two first vibration sensors are respectively mounted on the opposite side of two positioning components, and the detection end shaft of first vibration sensor is axially movably inserted into corresponding positioning recess;Second driving part can drive second vibration sensor to move in the direction perpendicular to the moving direction of second positioning component.The ribbon retractor abnormal sound detection mechanism can comprehensively detect the two ends and side surface of retractor, and the detection result is more accurate and reliable.

Description

Technical Field

[0001] This utility model relates to the field of mechanical fault diagnosis technology, and in particular to a mechanism for detecting abnormal noise in a webbing retractor. Background Technology

[0002] The webbing retractor is a core component of car seat belts. During the production process of car seat belts, it is necessary to test whether the webbing retractor makes any abnormal noises.

[0003] The patent with authorization announcement number CN213336755U discloses a positioning device for seat belt detection. The device places a fixing block assembly containing a retractor between the left and right positioning blocks. A cylinder drives the right side plate 4 to move toward the left side plate 2, thereby fixing the retractor. A microphone located in a groove on the inside of the right positioning block is used to listen for any abnormal noise when the seat belt inside the retractor is pulled.

[0004] However, the positioning device for seat belt detection only detects abnormal noises at one end of the retractor, which is not comprehensive and results in low accuracy of abnormal noise detection. In addition, different fixing block groups need to be designed for different models of retractors, which has problems of poor versatility and high cost. Summary of the Invention

[0005] The purpose of this invention is to provide a noise detection mechanism for a webbing retractor, which can comprehensively detect both ends and sides of the retractor, and the detection results are more accurate and reliable.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A webbing retractor noise detection mechanism includes a base, a positioning clamping mechanism for fixing the webbing retractor, and a detection component;

[0008] The positioning and clamping mechanism includes two positioning components arranged opposite to each other. The first positioning component is connected to the base, and the second positioning component is connected to a first driving member that drives it to move toward or away from the first positioning component. Positioning grooves for positioning the end of the webbing take-up device are provided on the opposite sides of the two positioning components.

[0009] The detection component includes two first vibration sensors, a second vibration sensor, and a second driving component; the two first vibration sensors are respectively installed on opposite sides of the two positioning components, and the detection end of the first vibration sensor extends axially into the corresponding positioning groove; the second vibration sensor is located between the two first vibration sensors, and the second driving component can drive the second vibration sensor to move relative to the base, and the moving direction of the second vibration sensor is perpendicular to the moving direction of the second positioning component.

[0010] Furthermore, the positioning component includes a support plate, a positioning block, and an intermediate plate located between the support plate and the positioning block. The intermediate plate is rotatably connected to the support plate via a rotating ring block, and the positioning block is detachably connected to the intermediate plate. The positioning groove is formed on the side of the positioning block opposite to the intermediate plate. A receiving groove for accommodating the first vibration sensor is formed between the rotating ring block, the intermediate plate, and the positioning block.

[0011] Furthermore, a first sliding sleeve is sleeved on the outside of the first vibration sensor, the first sliding sleeve is axially slidably disposed in the receiving groove, and a first spring is disposed between one end of the first sliding sleeve and the inner end face of the rotating ring block.

[0012] Furthermore, the support plate is provided with an arc-shaped scale, and the intermediate plate is provided with a pointer that matches the arc-shaped scale.

[0013] Furthermore, the intermediate plate is connected to two limiting blocks arranged vertically, and the positioning block is located between the two limiting blocks and is locked to the limiting blocks by locking screws.

[0014] Furthermore, an arc-shaped groove is provided on the support plate, and a handle screw is provided in the arc-shaped groove, which is screwed to the intermediate plate.

[0015] Furthermore, the second vibration sensor is connected to a fixing plate, and the fixing plate is connected to the driving end of the second driving member;

[0016] The fixed plate is connected to a hollow mounting box. The second vibration sensor is axially movable inside the mounting box via a second bushing, and the detection end of the second vibration sensor extends axially out of the mounting box. A second spring is provided between one end of the second bushing and an inner end face of the mounting box.

[0017] Furthermore, a photoelectric switch is provided on the base, and a light-blocking plate matching the photoelectric switch is connected to the second positioning component.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This utility model discloses a webbing retractor noise detection mechanism. A first driving component drives a second positioning assembly to move towards the first positioning assembly, thereby fixing the webbing retractor in two positioning grooves. The detection ends of two first vibration sensors respectively abut against both ends of the webbing retractor. A second driving component drives a second vibration sensor to move towards the webbing retractor, causing the detection end of the second vibration sensor to abut against the side of the webbing retractor. This enables noise detection of both ends and sides of the webbing retractor, resulting in more comprehensive and accurate detection results.

[0020] 2. The present invention provides a webbing retractor noise detection mechanism that can be applied to various models of webbing retractors for noise detection, thereby improving versatility and reducing manufacturing costs. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of a noise detection mechanism for a webbing retractor provided by this utility model.

[0022] Figure 2 This is a structural schematic diagram of a webbing retractor noise detection mechanism provided by this utility model from another angle.

[0023] Figure 3 yes Figure 1 A schematic diagram of the positioning component. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 3 As shown, a webbing retractor noise detection mechanism includes a base 1, a positioning clamping mechanism for fixing the webbing retractor, and a detection component.

[0026] Specifically, in this embodiment, the positioning clamping mechanism includes two positioning components 2 arranged opposite to each other. The first positioning component 2 is connected to the base 1, and the second positioning component 2 is connected to a first driving member 3 that drives it to move toward or away from the first positioning component 2. Positioning grooves 20 for positioning the end of the webbing take-up device are provided on the opposite sides of the two positioning components 2.

[0027] like Figure 2-3 As shown, the positioning assembly 2 includes a support plate 21, a positioning block 23, and an intermediate plate 22 located between the support plate 21 and the positioning block 23; wherein, the intermediate plate 22 is rotatably connected to the support plate 21 via a rotating ring block 24, and the positioning block 23 is detachably connected to the intermediate plate 22; the positioning groove 20 is located on the side of the positioning block 23 opposite to the intermediate plate 22; the rotating ring block 24 forms a receiving groove 5 between the intermediate plate 22 and the positioning block 23 for accommodating the first vibration sensor 41.

[0028] The support plate 21 has an arc-shaped groove 211, the center of which is collinear with the central axis of the rotating ring block 24. A handle screw 212 is installed within the arc-shaped groove 211, and this handle screw 212 is screwed onto the intermediate plate 22 to fix the intermediate plate 22 after it has rotated relative to the support plate 21 into position. This application allows for angle adjustment based on the product version of the webbing retractor, making it suitable for different versions of webbing retractors, thereby improving the versatility of the webbing retractor noise detection mechanism and reducing manufacturing costs.

[0029] When angle adjustment is required, loosen the handle screw 212 to allow the middle plate 22 to rotate relative to the bearing plate 21, which in turn causes the positioning block 23 to rotate as well; after rotation to the correct position, tighten the handle screw 212.

[0030] Furthermore, such as Figure 2 As shown, a circular arc scale 71 is provided on the support plate 21, and a pointer 72 matching the circular arc scale 71 is provided on the intermediate plate 22. By providing the matching circular arc scale 71 and pointer 72, the accuracy of angle adjustment can be improved.

[0031] In this embodiment, the intermediate plate 22 is connected to two limiting blocks 221 arranged vertically, and the positioning block 23 is located between the two limiting blocks 221 and is locked to the limiting blocks 221 by locking screws 222. In this embodiment, the positioning block 23 is fixed by a detachable connection to facilitate the disassembly and replacement of the positioning block 23.

[0032] In the second positioning component 2 of this embodiment, the support plate 21 is connected to the driving end of the first driving component 3. The first driving component 3 is preferably a cylinder.

[0033] In use, the first driving component 3 drives the second positioning component 2 to move toward or away from the first positioning component 2, which can adjust the distance between the two positioning blocks 23, thereby achieving the clamping or releasing of the webbing retractor.

[0034] Furthermore, a photoelectric switch 81 is provided on the base 1, and a light-blocking plate 82 matching the photoelectric switch 81 is connected to the carrier plate 21 or intermediate plate 22 in the second positioning component 2.

[0035] In this embodiment, the detection component includes two first vibration sensors 41, a second vibration sensor 42, and a second driving member 43. The two first vibration sensors 41 are respectively mounted on opposite sides of the two positioning components 2, and the detection end of the first vibration sensor 41 extends axially into the corresponding positioning groove 20. The second vibration sensor 42 is located between the two first vibration sensors 41, and the second driving member 43 can drive the second vibration sensor 42 to move relative to the base 1, with the moving direction of the second vibration sensor 42 perpendicular to the moving direction of the second positioning component 2.

[0036] like Figure 3 As shown, a first sliding sleeve 61 is sleeved on the outside of the first vibration sensor 41. The first sliding sleeve 61 is axially slidably disposed in the receiving groove 5, and a first spring 62 is disposed between one end of the first sliding sleeve 61 and the inner end face of the rotating ring block 24. In use, the elastic force of the first spring 62 can buffer the impact on the first vibration sensor 41 during the clamping of the webbing retractor, while ensuring that the first vibration sensor 41 is in close contact with the detection position of the webbing retractor.

[0037] like Figure 1 and 2 As shown, the second vibration sensor 42 is connected to a mounting plate 421, which is connected to the driving end of the second driving member 43. The mounting plate 421 is connected to a hollow mounting box 422. The second vibration sensor 42 is axially movably disposed within the mounting box 422 via a second bushing, and the detection end of the second vibration sensor 42 axially extends out of the mounting box 422. A second spring is disposed between one end of the second bushing and an inner end face of the mounting box 422. The second driving member 43 is preferably a cylinder.

[0038] In use, the second driving component 43 drives the mounting plate 421 to move relative to the base 1, thereby moving the second vibration sensor 42 to abut against the webbing retractor; the elastic force of the second spring can buffer the impact on the second vibration sensor 42, while ensuring that the second vibration sensor 42 is in close contact with the detection position of the webbing retractor.

[0039] This utility model discloses a webbing retractor noise detection mechanism. In use, the webbing retractor is placed between two positioning components 2. A first driving component 3 drives the second positioning component 2 to move towards the first positioning component 2, thereby fixing the webbing retractor within the two positioning grooves 20. The detection ends of two first vibration sensors 41 respectively abut against both ends of the webbing retractor. A second driving component 43 drives a second vibration sensor 42 towards the webbing retractor, causing the detection end of the second vibration sensor 42 to abut against the side of the webbing retractor. Noise detection is performed by pulling the webbing, and the presence of abnormal noise is determined based on the measurement results of the two first vibration sensors 41 and the second vibration sensor 42. Compared with existing technologies, this webbing retractor noise detection mechanism can detect both ends and sides of the webbing retractor, providing more comprehensive detection and more accurate and reliable results.

[0040] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A mechanism for detecting abnormal noise in a webbing retractor, characterized in that, Includes a base (1), a positioning clamping mechanism for fixing the webbing retractor, and a detection component; The positioning clamping mechanism includes two positioning components (2) arranged opposite to each other. The first positioning component (2) is connected to the base (1), and the second positioning component (2) is connected to a first driving member (3) that drives it to move toward or away from the first positioning component (2). The two positioning components (2) are provided with positioning grooves (20) on opposite sides for positioning the end of the webbing take-up device. The detection assembly includes two first vibration sensors (41), a second vibration sensor (42), and a second drive (43); the two first vibration sensors (41) are respectively installed on opposite sides of the two positioning assemblies (2), and the detection end of the first vibration sensor (41) extends axially into the corresponding positioning groove (20); the second vibration sensor (42) is located between the two first vibration sensors (41), and the second drive (43) can drive the second vibration sensor (42) to move relative to the base (1), and the moving direction of the second vibration sensor (42) is perpendicular to the moving direction of the second positioning assembly (2).

2. The abnormal noise detection mechanism for a webbing retractor according to claim 1, characterized in that, The positioning component (2) includes a support plate (21), a positioning block (23), and an intermediate plate (22) located between the support plate (21) and the positioning block (23). The intermediate plate (22) is rotatably connected to the support plate (21) via a rotating ring block (24). The positioning block (23) is detachably connected to the intermediate plate (22). The positioning groove (20) is provided on the side of the positioning block (23) facing away from the intermediate plate (22). A receiving groove (5) for accommodating the first vibration sensor (41) is formed between the rotating ring block (24), the intermediate plate (22), and the positioning block (23).

3. The abnormal noise detection mechanism for a webbing retractor according to claim 2, characterized in that, The first vibration sensor (41) is fitted with a first sliding sleeve (61) on its outer side. The first sliding sleeve (61) is axially slidably disposed in the receiving groove (5), and a first spring (62) is disposed between one end of the first sliding sleeve (61) and the inner end face of the rotating ring block (24).

4. The abnormal noise detection mechanism for a webbing retractor according to claim 2, characterized in that, The support plate (21) is provided with an arc scale (71), and the intermediate plate (22) is provided with a pointer (72) that matches the arc scale (71).

5. The abnormal noise detection mechanism for a webbing retractor according to claim 2, characterized in that, The intermediate plate (22) is connected to two limiting blocks (221) set at the top and bottom. The positioning block (23) is located between the two limiting blocks (221) and is locked to the limiting blocks (221) by locking screws (222).

6. The abnormal noise detection mechanism for a webbing retractor according to claim 2, characterized in that, An arc-shaped groove (211) is provided on the bearing plate (21), and a handle screw (212) is provided in the arc-shaped groove (211). The handle screw (212) is screwed to the intermediate plate (22).

7. The abnormal noise detection mechanism for a webbing retractor according to claim 1, characterized in that, The second vibration sensor (42) is connected to a fixing plate (421), and the fixing plate (421) is connected to the driving end of the second driving member (43); The fixed plate (421) is connected to a hollow mounting box (422). The second vibration sensor (42) is axially movable inside the mounting box (422) through a second bushing, and the detection end of the second vibration sensor (42) extends axially out of the mounting box (422). A second spring is provided between one end of the second bushing and an inner end face of the mounting box (422).

8. The abnormal noise detection mechanism for a webbing retractor according to claim 1, characterized in that, A photoelectric switch (81) is provided on the base (1), and a light-blocking plate (82) matching the photoelectric switch (81) is connected to the second positioning component (2).

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