Automobile safety belt spring bolt automatic detection device and detection method thereof

Abstract

The invention discloses an automobile safety belt spring bolt automatic detection device and a detection method thereof, and relates to the technical field of spring bolt testing. Comprising a detection installation part, a lock catch installation part is installed on the detection installation part, and the lock catch installation part is used for installing a safety belt lock catch; a spring bolt limiting piece is mounted on the detection mounting piece; the spring bolt limiting piece is used for detecting deformation of the spring bolt; a magnetic attraction limiting piece is installed on the spring bolt limiting piece. Two stopping pieces are installed at the bottom of the spring bolt limiting piece. A reset adjusting part is mounted on the detection mounting part; the lock catch mounting piece is adopted, so that the safety belt lock catch can be rotated, the connection position of a hook and a spring bolt in the lock catch can be switched, and front and back testing work can be conveniently carried out; the problem that an existing safety belt spring bolt automatic detection device cannot conveniently limit workers to sequentially test the front face and the back face of a spring bolt is solved.

Description

Technical Field

[0001] This invention relates to the field of lock tongue testing technology, specifically to an automatic detection device and method for automotive seatbelt lock tongues. Background Technology

[0002] In the safety system of electric vehicles, the seat belt is a crucial component. The seat belt latch needs to be inserted into the buckle for connection. The mainstream material for seat belt buckle latches is high-strength cold-rolled steel, while aluminum alloy die-casting is mainly used in new energy vehicles. In the actual production and manufacturing of the latch, its connection strength needs to be tested. Current automatic detection devices for seat belt latches test the latch together with the seat belt, but the woven seat belt is prone to premature breakage. At the same time, it is usually inconvenient for workers to test the latch from both sides sequentially during testing. Traditional testing methods make it difficult for humans to distinguish the front and back of the latch, resulting in poor comprehensiveness of the latch test. It is also difficult to indicate latch jamming or other issues. Precision deviations in the latch can increase resistance when inserting it into the buckle, affecting the production quality of the latch.

[0003] Therefore, we propose an automatic detection device and method for automotive seatbelt latches. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic detection device and method for automotive seatbelt latches, in order to solve the problem mentioned in the background art that current automatic detection devices for seatbelt latches are not convenient for restricting workers from testing the latch from both sides sequentially.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic detection device for automotive seatbelt latches, comprising a detection mounting component, on which a latch mounting component is mounted for mounting a seatbelt latch; a latch limiting component is mounted on the detection mounting component; the latch limiting component is used to detect latch deformation; a magnetic limiting component is mounted on the latch limiting component; two stop components are mounted at the bottom of the latch limiting component; a reset adjusting component is mounted on the detection mounting component; the reset adjusting component is used to limit the testing of the front and back sides of the seatbelt latch; a jamming indicator is mounted on the latch mounting component; the detection mounting component includes: a detection mounting frame and a detection indicator light, the detection indicator light being fixedly mounted on the detection mounting frame, and the detection indicator light having two LED beads; the detection mounting frame is used to be placed on a press.

[0006] Preferably, the detection mounting component further includes: a lifting slide shaft, a pressure sensor, a pressing column, and a stop plate. Two lifting slide shafts are slidably inserted into the detection mounting frame, and springs are respectively sleeved on the two lifting slide shafts, with the springs on the two lifting slide shafts located inside the detection mounting frame. Pressure sensors are fixedly installed on the inner top of the two lifting slide shafts. Pressing columns are slidably inserted into the two lifting slide shafts. The two pressing columns press against and adhere to the pressure sensors. A stop plate is fixedly installed inside the detection mounting frame by bolts.

[0007] Preferably, the locking mounting component includes: a rotary cylinder, a lifting sliding cylinder, a magnetic switch, a locking mounting cylinder, and a limiting bolt. The rotary cylinder is rotatably sleeved on the detection mounting frame; the lifting sliding cylinder is slidably sleeved on the rotary cylinder; two springs are sleeved on the outer side of the lifting sliding cylinder, and the two springs on the lifting sliding cylinder are respectively connected between the lifting sliding cylinder and the rotary cylinder; the two springs on the outer side of the lifting sliding cylinder are respectively located inside the rotary cylinder; two magnetic switches are fixedly installed at the bottom of the lifting sliding cylinder; the stop plate is used to compress the magnetic switches; the locking mounting cylinder is fixedly installed on the lifting sliding cylinder; a limiting bolt is threadedly connected to the locking mounting cylinder; the limiting bolt is used to limit the locking.

[0008] Preferably, the latch limiting component includes: a limiting mounting plate, a limiting insert plate, and a gap switch. The limiting mounting plate is fixedly mounted on the bottom of the two lifting shafts by bolts. The limiting insert plate is slidably inserted into the limiting mounting plate. The front end of the limiting insert plate has a beveled structure. A gap switch is fixedly installed inside the limiting mounting plate. The gap switch is electrically connected to the LED on the detection indicator light. The limiting insert plate is used to limit the latch.

[0009] Preferably, the magnetic limiting component includes: a limiting plug block, which is slidably plugged into the limiting mounting plate; the limiting plug block is used to plug into the limiting plug plate for limiting; tension springs are respectively connected to both sides of the limiting plug block, and the tension springs at both ends of the limiting plug block are respectively connected to the limiting mounting plate.

[0010] Preferably, the magnetic attraction limiting component further includes: a limiting electromagnet, which is fixedly installed on the limiting plug block; the limiting electromagnet is used to magnetically attract the limiting plug plate; the limiting electromagnet is electrically connected to two magnetic switches.

[0011] Preferably, the stop component includes: a stop slide shaft, a stop block, and a limiting magnet. The stop slide shaft is slidably inserted into the limiting mounting plate; two stop blocks are fixedly installed on the two stop slide shafts, and the two stop blocks are slidably installed on the limiting mounting plate; the stop blocks are used to stop the limiting plate; tension springs are sleeved on the two stop slide shafts, and the tension springs on the two stop slide shafts are respectively connected between the stop slide shafts and the limiting mounting plate; two limiting magnets are fixedly installed on the two stop blocks, and the limiting magnets are used to magnetically attract the limiting mounting plate; the limiting magnets are electrically connected to two magnetic switches.

[0012] Preferably, the reset adjustment component includes: a reset lifting frame and a reset pressure plate, wherein the reset lifting frame is slidably inserted into the detection mounting frame; two reset pressure plates are fixedly installed at the bottom of the reset lifting frame, and the two reset pressure plates are used to press two magnetic switches; the reset lifting frame is used for hand-held lifting.

[0013] Preferably, the jamming indicator includes: a jamming stop ring, which is fixedly installed on the rotary drum by bolts; the jamming stop ring is located on the outside of the lifting sliding drum; the jamming indicator further includes: an indicator switch, which is fixedly installed on the lifting sliding drum; the indicator switch is aligned with the jamming stop ring; the indicator switch is electrically connected to the LED on the detection indicator light.

[0014] An automatic detection method for car seatbelt latches: 1) Place the lock tongue on the limit mounting plate, insert the limit plate into the limit mounting plate and pass it through the safety belt lock tongue, then insert the safety belt buckle into the buckle mounting cylinder; 2) Lift the limit mounting plate to drive the bolt into the latch. If there is significant resistance when the bolt is inserted into the latch, the indicator light on the detection light will illuminate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention employs a locking buckle mounting component that allows for rotation of the safety belt buckle, switching the connection position of the hook and latch inside the buckle. This facilitates testing from both sides. Simultaneously, the use of magnetic limiting components and stops automatically restricts the operator from testing both sides of the latch, preventing incomplete testing on one side and ensuring practical application. This guarantees that the latch maintains locking strength on both sides after the buckle is inserted, ensuring testing quality and preventing operators from forgetting to test or performing only one-sided testing for efficiency.

[0016] The use of a locking indicator can reflect the manufacturing quality of the latch by the resistance when the latch is engaged with the latch. If the latch is not smooth enough when being inserted into the latch due to problems such as the manufacturing size of the latch or the presence of burrs, it can be automatically detected.

[0017] Using a latch mounting component in conjunction with a latch limit component allows for rapid testing of the latch's pressure resistance. This can be achieved using a press for quick testing. Additionally, a gap switch can be used to detect the service life of the limit plate, preventing undetected wear or deformation of the limit plate on the latch for extended periods. This ensures timely and efficient testing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an automatic detection device and method for car seatbelt latches according to the present invention. Figure 2 This is a cross-sectional view of the internal structure of an automatic detection device and method for car seatbelt latches according to the present invention. Figure 3 This is a schematic diagram of the bottom structure of an automatic detection device and method for car seatbelt latches according to the present invention. Figure 4 This is a schematic diagram of the structure of the testing and installation component of the present invention; Figure 5 This is a cross-sectional view of the gap switch position of the present invention; Figure 6 This is a schematic diagram of the locking mounting component of the present invention; Figure 7 This is a schematic diagram of the magnetic suction limiting component structure of the present invention; Figure 8 This is a schematic diagram of the stop structure of the present invention; Figure 9 This is a schematic diagram of the reset adjustment component of the present invention; Figure 10 This is a schematic diagram of the jamming warning device of the present invention.

[0019] In the diagram: 1. Detection mounting component; 101. Detection mounting bracket; 102. Detection indicator light; 103. Lifting slide shaft; 104. Pressure sensor; 105. Downward pressure column; 106. Stop plate; 2. Locking mounting component; 201. Rotary cylinder; 202. Lifting sliding cylinder; 203. Magnetic switch; 204. Locking mounting cylinder; 205. Limit bolt; 3. Lock tongue limit component; 301. Limit mounting plate; 302. Limit insert plate; 303. Gap switch; 4. Magnetic limit component; 401. Limit insert block; 402. Limit electromagnet; 5. Stop component; 501. Stop slide shaft; 502. Stop block; 503. Limit magnet; 6. Reset adjustment component; 601. Reset lifting frame; 602. Reset pressure plate; 7. Jamming indicator component; 701. Jamming stop ring; 702. Indicator switch. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figures 1 to 10 As shown: This invention provides a technical solution: an automatic detection device for car seatbelt latches, comprising a detection mounting component 1, a latch mounting component 2 mounted on the detection mounting component 1 for mounting seatbelt latches; a latch limiting component 3 mounted on the detection mounting component 1 for detecting latch deformation; a magnetic limiting component 4 mounted on the latch limiting component 3; two stop components 5 mounted at the bottom of the latch limiting component 3; a reset adjusting component 6 mounted on the detection mounting component 1 for limiting the testing of the front and back sides of the seatbelt latch; a jamming indicator component 7 mounted on the latch mounting component 2; the detection mounting component 1 includes: a detection mounting frame 101 and a detection indicator light 102, the detection indicator light 102 being fixedly mounted on the detection mounting frame 101, and the detection indicator light 102 having two LED beads; the detection mounting frame 101 is used to place on a press.

[0022] The detection mounting component 1 further includes: a lifting slide shaft 103, a pressure sensor 104, a pressing column 105, and a stop plate 106. Two lifting slide shafts 103 are slidably inserted into the detection mounting frame 101, and springs are respectively sleeved on the two lifting slide shafts 103, with the springs on the two lifting slide shafts 103 located inside the detection mounting frame 101. Pressure sensors 104 are fixedly installed on the inner top of the two lifting slide shafts 103. Pressing columns 105 are slidably inserted into the two lifting slide shafts 103. The two pressing columns 105 press and adhere to the pressure sensors 104. 4; A stop plate 106 is fixedly installed inside the testing mounting frame 101 by bolts; the locking mounting component 2 includes: a rotary cylinder 201, a lifting sliding cylinder 202, a magnetic switch 203, a locking mounting cylinder 204, and a limit bolt 205. The rotary cylinder 201 is rotatably sleeved on the testing mounting frame 101; the lifting sliding cylinder 202 is slidably sleeved on the rotary cylinder 201; two springs are sleeved on the outside of the lifting sliding cylinder 202, and the two springs on the lifting sliding cylinder 202 are respectively connected between the lifting sliding cylinder 202 and the rotary cylinder 201; the two springs on the outside of the lifting sliding cylinder 202 Located inside the rotary drum 201; two magnetic switches 203 are fixedly installed at the bottom of the lifting sliding drum 202; a stop plate 106 is used to press the magnetic switches 203; a locking mounting cylinder 204 is fixedly installed on the lifting sliding drum 202; a limit bolt 205 is threadedly connected to the locking mounting cylinder 204; the limit bolt 205 is used to limit the locking; a protruding protective cylinder is provided on the outside of the magnetic switch 203 to prevent manual pressing; the locking tongue limiting component 3 includes: a limiting mounting plate 301, a limiting insert plate 302 and a gap switch 303, the limiting mounting plate 301 is fixedly installed by bolts. At the bottom of the two lifting shafts 103, a limiting plate 302 is slidably inserted into the limiting mounting plate 301; the front end of the limiting plate 302 has a beveled structure; the limiting plate 302 has a groove; a gap switch 303 is fixedly installed inside the limiting mounting plate 301; the gap switch 303 is electrically connected to the LED on the detection indicator light 102; the limiting plate 302 is used to limit the locking tongue; the magnetic limiting component 4 includes: a limiting plug block 401, which is slidably inserted into the groove on the limiting mounting plate 301; the limiting plug block 401 is used to insert the limiting plate 302 for limiting;Tension springs are connected to both sides of the limiting plug 401, and the tension springs at both ends of the limiting plug 401 are connected to the limiting mounting plate 301. The latch mounting component 2, in conjunction with the latch limiting component 3, allows for rapid testing of the latch's pressure resistance. This can be done quickly using a pressure machine without requiring the use of a safety belt, allowing for independent testing of the latch. Simultaneously, the gap switch 303 can be used to detect the service life of the limiting plug 302, preventing undetected wear or deformation of the limiting plug 302 while it stops the latch. This ensures timely and efficient detection. The magnetic limiting component 4 ensures the limiting plug 302 stably limits the latch. During testing, if the bottom of the limiting plug 302 is excessively worn between itself and the latch, or if it is completely deformed due to pressure from the latch, the bottom of the latch will no longer press against the gap switch 303, thus illuminating the indicator light on the detection indicator 102.

[0023] The magnetic limiting component 4 further includes: a limiting electromagnet 402, which is fixedly installed on the limiting plug block 401; the limiting electromagnet 402 is used to magnetically attract the limiting plug plate 302; the limiting electromagnet 402 is electrically connected to two magnetic switches 203; the stop component 5 includes: a stop sliding shaft 501, a stop block 502, and a limiting magnet 503, with the stop sliding shaft 501 slidably inserted into the limiting mounting plate 301; stop blocks 502 are fixedly installed on the two stop sliding shafts 501 respectively, and the two stop blocks 502 are slidably installed on the limiting mounting plate 301 respectively; the stop blocks 502 are used to stop the limiting plug plate 302; tension springs are sleeved on the two stop sliding shafts 501 respectively, and the two stop sliding shafts 501 are... Tension springs are connected between the stop slide shaft 501 and the limiting mounting plate 301 respectively; two limiting magnets 503 are fixedly installed on the two stop blocks 502 respectively, and the limiting magnets 503 are used to magnetically attract the limiting mounting plate 301; the limiting magnets 503 are electrically connected to the two magnetic switches 203; the reset adjustment component 6 includes: a reset lifting frame 601 and a reset pressure plate 602, the reset lifting frame 601 is slidably inserted into the detection mounting frame 101; the stop plate 106 and the reset pressure plate 602 are respectively provided with protrusions; two reset pressure plates 602 are fixedly installed at the bottom of the reset lifting frame 601, and the two reset pressure plates 602 are used to press the two magnetic switches 203; the reset lifting frame 601 is used for hand lifting, and can be secured by the locking mounting component 2. This design allows for rotating the seatbelt buckle, switching the connection position of the hook and latch inside the buckle, facilitating testing from both sides. Simultaneously, the magnetic limiter 4 and stop 5 automatically limit the operator's ability to test both sides of the latch, preventing incomplete testing from a single side and ensuring consistent performance in real-world applications. This guarantees that the latch maintains locking strength from both sides after being inserted into the buckle. In real vehicle environments, especially in emergencies, low light, or when operated by children, passengers or drivers might insert the latch incorrectly (backwards). This design ensures testing quality and prevents operators from forgetting to test or performing only one side for efficiency. The actual limiter mounting plate 30... When the locking tongue is pressed down, the lifting sliding cylinder 202 can be elastically pressed down, compressing the spring on the lower side of the lifting sliding cylinder 202. At this time, the magnetic switch 203 on the right side will first move down to press the protrusion on the reset plate 602, and then the locking latch can be released. Then, the rotating cylinder 201 is rotated to achieve the change of sides, and the connection strength is tested again. Another magnetic switch 203 will also be driven to press the protrusion on the reset plate 602. At this time, the limit electromagnet 402 is in the de-energized state and no longer magnetically attracts the limit plate 302. Only then can the operator pull out the limit plug 401 to release the limit plug 302. With the help of the stop 5, it can automatically limit the operator's testing of the front and back sides of the locking tongue.

[0024] In Example 2, based on Example 1, the jamming indicator 7 includes: a jamming stop ring 701, which is fixedly installed on the rotary drum 201 by bolts; the jamming stop ring 701 is located on the outside of the lifting sliding drum 202; the jamming indicator 7 also includes: an indicator switch 702, which is fixedly installed on the lifting sliding drum 202; the indicator switch 702 is aligned with the jamming stop ring 701; the indicator switch 702 is electrically connected to the LED on the detection indicator light 102. By using the jamming indicator 7, the resistance when the bolt is connected to the latch can be used to reflect the processing quality of the bolt. If the bolt is not smooth enough when inserted into the latch due to problems such as the processing size of the bolt or the presence of burrs, automatic detection can be achieved, which can intuitively remind the staff.

[0025] An automatic detection method for car seatbelt latches: 1) Place the locking tongue on the limiting mounting plate 301, insert the limiting insert plate 302 into the limiting mounting plate 301 and pass it through the safety belt locking tongue, then insert the safety belt buckle into the buckle mounting cylinder 204; 2) Lifting the limit mounting plate 301 causes the bolt to insert into the latch. If there is significant resistance when the limit mounting plate 301 is lifted and the bolt is inserted into the latch, the indicator light on the detection indicator 102 will light up to indicate this.

[0026] The working principle of this embodiment is as follows: First, the structure is placed on a press. When testing the safety belt latch, the latch can be placed on the limiting mounting plate 301. The limiting insert plate 302 is inserted into the limiting mounting plate 301 and passes through the safety belt latch. The safety belt buckle is inserted into the buckle mounting cylinder 204. The limiting bolt 205 passes through the buckle thread and is connected to the buckle mounting cylinder 204. Then, the limiting mounting plate 301 can be lifted, causing the latch to insert into the buckle. When the limiting mounting plate 301 is lifted and the latch is inserted into the buckle, if there is a large resistance, the upward pressing of the latch can push the lifting sliding cylinder 202 upward, compressing the spring on the upper outer side of the lifting sliding cylinder 202. If there is a large resistance, the indicator switch 702 can be activated to compress the locking stop ring 701. The indicator light 102 can be controlled to illuminate to indicate the connection. After the latch is connected, the press can be controlled to press down the pressing column 105, which will drive the lifting slide shaft 103 to move down. During the process, the pressure of the pressure sensor 104 can be observed. Once the pressure reaches the target, the press can be stopped. As the limit plate 301 is pressed down, the latch can be pressed down inside the latch to test the connection strength. After the test is completed, the latch can be separated by pressing the release button to observe whether there is any deformation or breakage of the latch. If the bottom of the limit plate 302 and the latch are worn excessively or completely deformed by the pressure of the latch during the test, the bottom of the latch will no longer press the gap switch 303, and the indicator light 102 can be controlled to illuminate to indicate the connection. When the actual limiting mounting plate 301 drives the locking tongue to press down, the lifting sliding cylinder 202 can be elastically pressed down, compressing the spring on the lower side of the lifting sliding cylinder 202. At this time, the magnetic switch 203 on the right will first move down to press the protrusion on the reset plate 602, and then the latch connection to the locking tongue can be released. Then, the rotating cylinder 201 is rotated to achieve face changing, and the connection strength is tested again. The other magnetic switch 203 will also be driven to press the protrusion on the reset plate 602. At this time, the limiting electromagnet 402 is in a de-energized state and no longer magnetically attracts the limiting insert plate 302. Only then can the operator pull out the limiting insert block 401 to release the insertion of the limiting insert plate 302. Similarly, at this time, the limiting magnet 503 is also in a de-energized state and no longer magnetically attracts the limiting mounting plate 301. Once the limiting insert plate When 302 is pulled out and the lock tongue is replaced for testing, the tension spring on the stop slide shaft 501 will pull the stop block 502 directly upwards and stop inside the limit mounting plate 301. It will be impossible to insert the limit plate 302 to limit the lock tongue afterward. It is necessary to manually align the magnetic switch 203 with the protrusions on the two reset pressure plates 602, lift the reset lifting frame 601 and press the two magnetic switches 203 at the same time to restore the power state. Only then will the limit magnet 503 be electromagnetically attracted to the limit mounting plate 301, causing the stop block 502 to move down and release the stop. This makes it easier to restrict the staff from testing the front and back of the lock tongue again. At this time, the limit electromagnet 402 is also in a energized state, which makes it easier to stably insert the stop into the groove on the limit plate 302. This method restricts the staff from testing the front and back of the lock tongue separately.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic detection device for car seatbelt latches, comprising a detection mounting component (1), wherein a latch mounting component (2) is mounted on the detection mounting component (1), characterized in that: The latch mounting component (2) is used to install the safety belt latch; the detection mounting component (1) is equipped with a latch limiter (3); the latch limiter (3) is used to detect latch deformation; A magnetic limiting component (4) is installed on the locking tongue limiting component (3); two stop components (5) are installed at the bottom of the locking tongue limiting component (3); a reset adjusting component (6) is installed on the detection mounting component (1); the reset adjusting component (6) is used to limit the front and back of the test safety belt locking tongue; A locking indicator (7) is installed on the latch mounting component (2); The testing mounting component (1) includes a testing mounting frame (101) and a testing indicator light (102). The testing mounting frame (101) is fixedly mounted with the testing indicator light (102), and the testing indicator light (102) is provided with two LED beads. The testing mounting frame (101) is used to place on the press.

2. The automatic detection device for car seatbelt latches according to claim 1, characterized in that: The detection mounting component (1) further includes: a lifting slide shaft (103), a pressure sensor (104), a pressing column (105), and a stop plate (106). Two lifting slide shafts (103) are slidably inserted into the detection mounting frame (101), and springs are respectively sleeved on the two lifting slide shafts (103), and the springs on the two lifting slide shafts (103) are respectively located inside the detection mounting frame (101). Pressure sensors (104) are respectively fixedly installed on the inner top of the two lifting slide shafts (103). Pressing columns (105) are slidably inserted into the two lifting slide shafts (103). The two pressing columns (105) respectively press and adhere to the pressure sensors (104). The stop plate (106) is fixedly installed inside the detection mounting frame (101) by bolts.

3. The automatic detection device for car seatbelt latches according to claim 2, characterized in that: The locking mounting component (2) includes: a rotary cylinder (201), a lifting sliding cylinder (202), a magnetic switch (203), a locking mounting cylinder (204), and a limiting bolt (205). The rotary cylinder (201) is rotatably sleeved on the detection mounting frame (101); the lifting sliding cylinder (202) is slidably sleeved on the rotary cylinder (201); two springs are sleeved on the outer side of the lifting sliding cylinder (202), and the two springs on the lifting sliding cylinder (202) are respectively connected to... Between the lifting sliding cylinder (202) and the rotating cylinder (201); two springs on the outside of the lifting sliding cylinder (202) are respectively located inside the rotating cylinder (201); two magnetic switches (203) are fixedly installed at the bottom of the lifting sliding cylinder (202); the stop plate (106) is used to squeeze the magnetic switches (203); a locking mounting cylinder (204) is fixedly installed on the lifting sliding cylinder (202); a limit bolt (205) is threadedly connected to the locking mounting cylinder (204); the limit bolt (205) is used to limit the locking.

4. The automatic detection device for car seatbelt latches according to claim 3, characterized in that: The latch limiting component (3) includes: a limiting mounting plate (301), a limiting insert plate (302), and a gap switch (303). The limiting mounting plate (301) is fixedly mounted on the bottom of two lifting slide shafts (103) by bolts. The limiting insert plate (302) is slidably inserted into the limiting mounting plate (301). The front end of the limiting insert plate (302) has a beveled structure. The gap switch (303) is fixedly installed inside the limiting mounting plate (301). The gap switch (303) is electrically connected to the LED on the detection indicator light (102). The limiting insert plate (302) is used to limit the latch.

5. The automatic detection device for car seatbelt latches according to claim 4, characterized in that: The magnetic limiting component (4) includes: a limiting plug-in block (401), which is slidably plugged into the limiting mounting plate (301); the limiting plug-in block (401) is used to plug into the limiting plug plate (302) for limiting; tension springs are connected to both sides of the limiting plug-in block (401), and the tension springs at both ends of the limiting plug-in block (401) are respectively connected to the limiting mounting plate (301).

6. The automatic detection device for car seatbelt latches according to claim 5, characterized in that: The magnetic attraction limiting component (4) further includes: a limiting electromagnet (402), which is fixedly installed on the limiting plug block (401); the limiting electromagnet (402) is used to magnetically attract the limiting plug plate (302); the limiting electromagnet (402) is electrically connected to two magnetic switches (203).

7. The automatic detection device for car seatbelt latches according to claim 4, characterized in that: The stop component (5) includes: a stop slide shaft (501), a stop block (502), and a limiting magnet (503). The stop slide shaft (501) is slidably inserted into the limiting mounting plate (301). The two stop slide shafts (501) are respectively fixedly installed with stop blocks (502), and the two stop blocks (502) are respectively slidably installed on the limiting mounting plate (301). The stop block (502) is used to stop the limiting insert plate (302). Two stop slide shafts (501) are respectively fitted with tension springs, and the tension springs on the two stop slide shafts (501) are respectively connected between the stop slide shafts (501) and the limiting mounting plate (301); two limiting magnets (503) are respectively fixedly installed on the two stop blocks (502), and the limiting magnets (503) are used to magnetically attract the limiting mounting plate (301); the limiting magnets (503) are electrically connected to two magnetic switches (203).

8. The automatic detection device for car seatbelt latches according to claim 3, characterized in that: The reset adjustment component (6) includes a reset lifting frame (601) and a reset pressure plate (602). The reset lifting frame (601) is slidably inserted into the detection mounting frame (101). Two reset pressure plates (602) are fixedly installed at the bottom of the reset lifting frame (601), and the two reset pressure plates (602) are used to press the two magnetic switches (203). The reset lifting frame (601) is used for hand lifting.

9. The automatic detection device for car seatbelt latches according to claim 3, characterized in that: The jamming indicator (7) includes: a jamming stop ring (701), which is fixedly installed on the rotary drum (201) by bolts; the jamming stop ring (701) is located outside the lifting sliding drum (202); the jamming indicator (7) also includes: an indicator switch (702), which is fixedly installed on the lifting sliding drum (202); the indicator switch (702) is aligned with the jamming stop ring (701); the indicator switch (702) is electrically connected to the LED on the detection indicator light (102).

10. An automatic detection method for a car seatbelt latch, using an automatic detection device for a car seatbelt latch as described in claim 3, characterized in that: The steps include: 1) Place the locking tongue on the limiting mounting plate (301), insert the limiting insert plate (302) into the limiting mounting plate (301) and pass it through the safety belt locking tongue, then insert the safety belt buckle into the buckle mounting cylinder (204). 2) Lifting the limit mounting plate (301) causes the bolt to insert into the latch. When the limit mounting plate (301) is lifted and the bolt is inserted into the latch, if there is a large resistance, the LED on the detection indicator light (102) will light up to indicate this.

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