Flaw detection device for safety belt pipe fitting

By introducing a moving component and a flaw detection component into the safety belt fitting flaw detection device, the problem of inconvenience caused by the weight of the device is solved, and the device can be moved conveniently and detected efficiently.

CN224203135UActive Publication Date: 2026-05-05NANJING HUAMAI AUTOMOTIVE PARTS MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING HUAMAI AUTOMOTIVE PARTS MFG CO LTD
Filing Date
2025-03-14
Publication Date
2026-05-05

AI Technical Summary

Technical Problem

Existing seat belt fitting flaw detection devices are inconvenient to use due to the large weight of the equipment and housing, which causes arm muscle soreness after prolonged use.

Method used

A flaw detection device comprising a moving component and a flaw detection component was designed. The device can be easily moved by using a combination of casters and a support frame. The flaw detection component achieves full-circumference detection of pipe fittings by rotating the chuck and moving the lead screw driven by a motor.

Benefits of technology

It enables labor-saving movement of the device and efficient detection, reduces the user's operational burden, and improves the efficiency of flaw detection.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224203135U_ABST
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Abstract

The utility model discloses a flaw detection device of a safety belt pipe fitting, which comprises a box body and an equipment body, the equipment body is arranged in a box cover of the box body, a moving assembly is arranged outside the box body, and the moving assembly comprises a support frame III hinged to the bottom of the outer wall of one side of the box body; the two ends of the outer wall of the bottom of the third supporting frame are each slidably connected with a sliding rod in an inserted mode, one ends of the bottoms of the two sliding rods are hinged to the same movable frame, the bottoms of the outer walls of one ends of the two sliding rods are fixedly connected with the same limiting strip, and four universal wheels are installed on the outer wall of the bottom of the movable frame. An extending seat is fixedly installed on the outer wall of the bottom of the box body, and a positioning rod is inserted into the extending seat in a sliding mode. By arranging the moving assembly, when needed, the box body can be supported, meanwhile, it can be guaranteed that the device is more convenient to move through cooperation with universal wheels, the device does not need to be lifted actually, and enough labor is saved.
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Description

Technical Field

[0001] This utility model relates to the field of seat belt fitting manufacturing technology, specifically a flaw detection device for seat belt fittings. Background Technology

[0002] As an important component of the automotive safety system, the quality and safety of automotive seat belt tubes are directly related to the life safety of passengers. Therefore, strict flaw detection testing of the tubes is an essential step in the production process.

[0003] A search revealed a utility model patent with Chinese patent publication number CN218512369U, which discloses a flaw detection and positioning device for automotive seat belt fittings. The device includes a detection box and a detection box cover hinged to the detection box. Rotating handles are provided on the left and right sides of the detection box. A push-button lock is provided on the front side of the detection box. A buckle is provided on the front side of the detection box cover. A lock is provided on the bottom of the detection box. A shoulder strap is detachably provided on the lock. Insert plates are symmetrically arranged on the bottom of the detection box.

[0004] The aforementioned device achieves its convenience by placing the equipment inside the housing. However, due to the large weight of the equipment and housing, prolonged lifting can cause arm muscle soreness, making it inconvenient to use and leaving room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide a flaw detection device for seat belt fittings to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flaw detection device for seat belt fittings, comprising a housing and an equipment body, wherein the equipment body is installed inside the housing cover, and a movable component is installed outside the housing, the movable component comprising a support frame three hinged to the bottom of one outer wall of the housing, a sliding rod slidably inserted at both ends of the bottom outer wall of the support frame three, the bottom ends of the two sliding rods being hinged to the same movable frame, the bottom of the outer wall of one end of the two sliding rods being fixedly connected to the same limiting strip, and four universal wheels installed on the bottom outer wall of the movable frame.

[0007] As a further preferred embodiment of this technical solution, an extension seat is fixedly installed on the outer wall of the bottom of the box, a positioning rod is slidably inserted inside the extension seat, one end of the positioning rod is slidably inserted inside the support frame three, a threaded line is provided on the outside of the positioning rod, and a threaded groove adapted to the threaded line is provided inside the sliding hole of the extension seat.

[0008] When needed, the device can support the housing while the casters make movement easier, eliminating the need to lift the device and saving effort. Simply flip the movable end of the support frame three outwards until it is parallel to the housing, then press the positioning rod and slide it along the extension seat. Insert one end of the positioning rod into the corresponding through hole of the support frame three, and then the threaded line on the outside of the positioning rod contacts the extension seat. Then, drive the knob to screw into the extension seat, and the position of the support frame three will be firmly locked. Next, flip the movable end of the moving frame, and the moving frame overlapping with the support frame three will flip to the bottom of the sliding rod and then be restricted to a horizontal position by the limiting strip. The housing can then be supported. The user only needs to hold the handle for slight support, and finally apply a pushing force to move it.

[0009] As a further preferred embodiment of this technical solution, a flaw detection component is installed inside the enclosure, and a storage battery is fixedly installed on one side of the bottom inner wall of the enclosure, with the flaw detection component located on the side of the storage battery.

[0010] As a further preferred embodiment of this technical solution, the flaw detection assembly includes a support frame one fixedly connected to the inner wall of the bottom of the housing, a horizontally arranged lead screw rotatably connected inside the support frame one, a support frame two threadedly fitted onto the lead screw, the support frame two fitting against the bottom wall of the support frame one, a slide rod slidably inserted into one end of the support frame two, a probe installed at the bottom end of the slide rod, and the probe being electrically connected to the equipment body via a wire.

[0011] As a further preferred embodiment of this technical solution, a horizontally arranged motor is fixedly installed on the inner wall of the bottom of the housing. A chuck is coaxially fixed to the output end of the motor. The chuck is stepped, and several protrusions are provided on the outside of several steps of the chuck. A pulley is coaxially fixed to the output end of the motor and the outside of the lead screw. The two pulleys are fitted with the same belt.

[0012] The motor starts and drives the chuck to rotate, which in turn drives the pipe to rotate. The probe at the end of the slide bar can then perform a full rotation of the pipe. The pulley outside the motor output rotates synchronously. This pulley drives the lead screw to rotate via a belt and another pulley. The second support frame, which is restricted by the first support frame, can only move horizontally. The lead screw can drive the second support frame to move horizontally, and thus the probe can perform a full inspection of the pipe. It is convenient to use.

[0013] As a further preferred embodiment of this technical solution, a horizontally arranged baffle is fixedly connected to the bottom of the outer wall of one end of the support frame.

[0014] As a further preferred embodiment of this technical solution, a damper is fixedly connected to the top outer wall of each of the two sliding rods, and one end of the top of each damper is fixedly connected to both sides of the top inner wall of the support frame. A spring is sleeved on the outside of each damper.

[0015] This utility model provides a flaw detection device for seat belt fittings, which has the following beneficial effects:

[0016] (1) By setting up a movable component, this utility model can support the box when needed, and with the help of casters, it can make the movement of the device more convenient. There is no need to actually lift the device, which is enough to save effort. Flip the movable end of the support frame three outward and stop when it is parallel to the box. Press the positioning rod and slide it along the extension seat. One end of the positioning rod is inserted into the corresponding through hole of the support frame three. Then the thread on the outside of the positioning rod contacts the extension seat. Then drive the knob to screw into the extension seat. The position of the support frame three will be firmly locked. Then flip the movable end of the moving frame. The moving frame overlapping with the support frame three flips to the bottom of the sliding rod and is then restricted to a horizontal state by the limiting strip. The box can be supported. The user only needs to hold the handle for a little support. Finally, apply a pushing force to realize the movement.

[0017] (2) By setting up a flaw detection component, the motor is started to drive the chuck to rotate. The chuck drives the pipe to start rotating. The probe at the end of the slide rod can detect the pipe all around. The pulley outside the motor output rotates synchronously. This pulley drives the screw to rotate through the belt and another pulley. The second support frame, which is restricted by the first support frame, can only move horizontally. The screw can drive the second support frame to move horizontally, so the probe can detect the entire pipe. It is convenient to use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 This is an enlarged structural schematic diagram of the flaw detection component of this utility model;

[0021] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] In the diagram: 1. Housing; 2. Battery; 3. Equipment body; 4. Flaw detection assembly; 5. Moving assembly; 401. Motor; 402. Chuck; 403. Support frame one; 404. Lead screw; 405. Support frame two; 406. Slide rod; 407. Pulley; 408. Belt; 501. Support frame three; 502. Slide rod; 503. Moving frame; 504. Limiting strip; 505. Casters; 506. Baffle; 507. Extension seat; 508. Positioning rod; 509. Threaded wire. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 2 and Figure 4 As shown, in this embodiment, a flaw detection device for seat belt fittings includes a housing 1 and an equipment body 3 (preferably EPOCH 650). The equipment body 3 is installed inside the housing 1. A moving component 5 is installed outside the housing 1. The moving component 5 includes a support frame 3 501 hinged to the bottom of one side of the outer wall of the housing 1. A sliding rod 502 is slidably inserted into both ends of the bottom outer wall of the support frame 3 501. The same moving frame 503 is hinged to one end of the bottom of the two sliding rods 502. The same limiting strip 504 is fixedly connected to the bottom of the outer wall of one end of the two sliding rods 502. Four casters 505 are installed on the bottom outer wall of the moving frame 503.

[0025] An extension seat 507 is fixedly installed on the bottom outer wall of the housing 1. A positioning rod 508 is slidably inserted into the extension seat 507. One end of the positioning rod 508 is slidably inserted into the support frame 501. A threaded line 509 is provided on the outside of the positioning rod 508. A threaded groove that matches the threaded line 509 is provided inside the sliding hole of the extension seat 507.

[0026] Flip the movable end of support frame 3 501 outwards until it is parallel to the box 1. Press the positioning rod 508 and slide it along the extension seat 507. Insert one end of the positioning rod 508 into the corresponding through hole of support frame 3 501. Then, the thread 509 on the outside of the positioning rod 508 contacts the extension seat 507. Then, drive the knob to screw into the extension seat 507. The position of support frame 3 501 will be firmly locked. Next, flip the movable end of the moving frame 503. The moving frame 503, which overlaps with support frame 3 501, flips to the bottom of the sliding rod 502 and is then restricted to a horizontal state by the limiting strip 504. The box 1 can then be supported. The user only needs to hold the handle for a little support. Finally, apply a pushing force to move it.

[0027] like Figure 1 and Figure 3 As shown, a flaw detection assembly 4 is installed inside the housing 1, and a storage battery 2 is fixedly installed on one side of the bottom inner wall of the housing 1. The flaw detection assembly 4 is located on one side of the storage battery 2.

[0028] The flaw detection assembly 4 includes a support frame 403 fixedly connected to the inner wall of the bottom of the housing 1. A horizontally arranged lead screw 404 is rotatably connected inside the support frame 403. The lead screw 404 is threadedly fitted with a support frame 405. The support frame 405 is in contact with the bottom wall of the support frame 403. A slide rod 406 is slidably inserted into one end of the support frame 405. A probe is installed at the bottom end of the slide rod 406, and the probe is electrically connected to the equipment body 3 through a wire.

[0029] A horizontally mounted motor 401 is fixedly installed on the inner wall of the bottom of the housing 1. A chuck 402 is coaxially fixed to the output end of the motor 401. The chuck 402 is stepped, and several protrusions are provided on the outside of several steps of the chuck 402. A pulley 407 is coaxially fixed to the output end of the motor 401 and the outside of the lead screw 404. The two pulleys 407 are fitted with the same belt 408.

[0030] The start motor 401 drives the chuck 402 to rotate, which in turn causes the pipe fitting to rotate. The probe at the end of the slide rod 406 can then perform a full rotation of the pipe fitting. The pulley 407 outside the output end of the motor 401 rotates synchronously. This pulley 407 drives the lead screw 404 to rotate via the belt 408 and another pulley 407. The support frame 405, which is restricted by the first support frame 403, can only move horizontally. The lead screw 404 can drive the second support frame 405 to move horizontally, thus allowing the probe to perform a full inspection of the pipe fitting. This method is convenient to use.

[0031] like Figure 2 As shown, a horizontally arranged baffle 506 is fixedly connected to the bottom of the outer wall of one end of the support frame 3 501. A first magnet is provided inside the baffle, and the first magnet can attract the support frame 3 501. When the moving frame 503 is retracted, it will be attracted by the magnet. A second magnet corresponding to the support frame 3 501 is provided inside the box 1.

[0032] like Figure 2 As shown, a damper is fixedly connected to the top outer wall of each of the two sliding rods 502, and one end of the top of each damper is fixedly connected to both sides of the top inner wall of the support frame 501. A spring is fitted on the outside of each damper to buffer the vibration generated during the movement of the device.

[0033] This utility model provides a flaw detection device for seat belt fittings, the specific working principle of which is as follows:

[0034] When the device is working, the pipe fitting is fitted onto the outside of one of the steps of the chuck 402. The protrusions on the outside of the step are deformed by compression. Under the action of static friction, the pipe fitting will be fixed. The slide rod 406 slides down along the support frame 405 under the action of gravity. Then, the probe at its end contacts the outer wall of the pipe fitting. The synchronous circuit inside the device body 3 generates a synchronous pulse signal. After receiving the signal from the synchronous circuit, the transmitting circuit generates a high-frequency electrical pulse signal to excite the crystal inside the probe, causing it to vibrate at high frequency, thereby generating ultrasonic waves inside the pipe fitting. The receiving circuit receives the ultrasonic signal reflected back from the probe and converts it into an electrical signal for processing. The horizontal scanning circuit controls the horizontal movement of the waveform on the display. The starting motor 401 drives the chuck 402 to rotate. The chuck 402 drives the pipe fitting to start rotating. The probe at the end of the slide rod 406 can then perform a full rotation of the pipe fitting. The pulley 407 outside the output end of the motor 401 rotates synchronously. This pulley 407 is connected to another pulley 407 via a belt 408. When the lead screw 404 rotates, the second support frame 405, which is restricted by the first support frame 403, can only move horizontally. The lead screw 404 can drive the second support frame 405 to move horizontally, so that the probe can perform overall testing on the pipe fitting. It is convenient to use. After use, close and lock the cover of the box 1, flip the movable end of the third support frame 501 outward, and stop when it is parallel to the box 1. Press the positioning rod 508 and slide it along the extension seat 507. One end of the positioning rod 508 is inserted into the corresponding support frame 501. The through hole is then opened, and the threaded line 509 on the outside of the positioning rod 508 contacts the extension seat 507. The knob is then driven into the extension seat 507, and the position of the support frame 3 501 is firmly locked. Then, the movable end of the moving frame 503 is flipped, and the moving frame 503, which overlaps with the support frame 3 501, flips to the bottom of the sliding rod 502. Then, it is restricted to a horizontal state by the limiting strip 504, and the box 1 can be supported. The user only needs to hold the handle for a little support, and finally, the push force can be applied to achieve movement.

[0035] 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. A flaw detection device for seat belt fittings, comprising a housing (1) and an equipment body (3), characterized in that: The device body (3) is installed inside the box cover of the box body (1). A moving component (5) is installed on the outside of the box body (1). The moving component (5) includes a support frame three (501) hinged to the bottom of the outer wall of one side of the box body (1). A sliding rod (502) is slidably inserted at both ends of the bottom outer wall of the support frame three (501). The same moving frame (503) is hinged to one end of the bottom of the two sliding rods (502). The same limiting strip (504) is fixedly connected to the bottom of the outer wall of one end of the two sliding rods (502). Four universal wheels (505) are installed on the bottom outer wall of the moving frame (503).

2. The flaw detection device for a seat belt fitting according to claim 1, characterized in that: An extension seat (507) is fixedly installed on the bottom outer wall of the box (1). A positioning rod (508) is slidably inserted inside the extension seat (507). One end of the positioning rod (508) is slidably inserted inside the support frame (501). A threaded wire (509) is provided on the outside of the positioning rod (508). A threaded groove that matches the threaded wire (509) is provided inside the sliding hole of the extension seat (507).

3. The flaw detection device for a seat belt fitting according to claim 1, characterized in that: The enclosure (1) is equipped with a flaw detection component (4), and a storage battery (2) is fixedly installed on one side of the bottom inner wall of the enclosure (1). The flaw detection component (4) is located on one side of the storage battery (2).

4. The flaw detection device for a seat belt fitting according to claim 3, characterized in that: The flaw detection assembly (4) includes a support frame one (403) fixedly connected to the inner wall of the bottom of the housing (1). A horizontally arranged lead screw (404) is rotatably connected inside the support frame one (403). The lead screw (404) is threaded with a support frame two (405). The support frame two (405) is in contact with the bottom wall of the support frame one (403). A slide rod (406) is slidably inserted into one end of the support frame two (405). A probe is installed at the bottom end of the slide rod (406), and the probe is electrically connected to the equipment body (3) through a wire.

5. The flaw detection device for a seat belt fitting according to claim 4, characterized in that: A horizontally arranged motor (401) is fixedly installed on the inner wall of the bottom of the housing (1). A chuck (402) is coaxially fixed at the output end of the motor (401). The chuck (402) is stepped, and several protrusions are provided on the outside of several steps of the chuck (402). A pulley (407) is coaxially fixed at the output end of the motor (401) and on the outside of the lead screw (404). The two pulleys (407) are fitted with the same belt (408).

6. The flaw detection device for a seat belt fitting according to claim 1, characterized in that: The bottom of one end of the support frame three (501) is fixedly connected to a baffle (506) that is set horizontally.

7. The flaw detection device for a seat belt fitting according to claim 1, characterized in that: A damper is fixedly connected to the top outer wall of each of the two sliding rods (502), and one end of the top of each damper is fixedly connected to both sides of the top inner wall of the support frame three (501). A spring is sleeved on the outside of each damper.

Citation Information

Patent Citations

  • Pipe flaw detection positioning device of automobile safety belt

    CN218512369U