Seat safety belt lock catch detection device

Abstract

The utility model provides a seat belt lock catch detection device, and belongs to the field of automobile spare part detection. The device comprises a base, a plug pin assembly and a sensor assembly, and the base is fixedly connected with a mechanical arm; the bolt assembly is provided with a spring bolt and an adjusting mechanism, the spring bolt is arranged in the direction of a lock catch of the safety belt, and the adjusting mechanism is fixedly connected with the base and the spring bolt and used for adjusting the depth of the spring bolt stretching into the lock catch. The sensor assembly is provided with a distance sensor and a connecting piece, the connecting piece is fixedly connected with the adjusting mechanism and the distance sensor, and the distance sensor is used for collecting the distance from the bolt assembly to the lock catch; the detection device comprises a central controller, the distance sensor collects distance information and transmits the distance information to the central controller, and the central controller processes the distance information and drives the mechanical arm to move in the direction that the spring bolt enters and exits the lock catch. According to the safety belt lock catch, the lock tongue can smoothly enter the lock catch, and the safety belt lock catch can be matched with safety belt lock catches of different vehicle types.

Description

Technical Field

[0001] The utility model belongs to the field of automobile spare part detection, and more specifically, relates to a seat belt buckle detection device. Background Art

[0002] Automobile spare part detection refers to the inspection and evaluation of automobile parts and accessories to ensure that they meet relevant safety, quality and performance standards. These detections are usually carried out by professional automobile technicians, engineers or third-party detection agencies. The main objects of detection for automobile spare parts include airbags and seat belt systems, engines and power transmission systems, braking and suspension systems, air conditioning and heating systems, etc. Among them, the detection of airbags and seat belt systems is an important link to ensure the effective protection of passengers in a collision accident. For the seat belt system, it mainly tests the reliability of the seat belt buckle by inserting and removing the seat belt back and forth many times, so that the latch of the seat belt is inserted and removed from the buckle many times.

[0003] In the prior art, a seat belt insertion and extraction force test device is generally used to test the insertability and extractability of a seat belt buckle. Since most of the seat belt insertion and extraction force test devices in the prior art use a camera to capture the position of the buckle, and then drive the robotic arm to move to the corresponding position, give a certain signal to the arm, and drive the latch to approach the buckle until the latch enters the buckle. The camera will move along with the mechanism, and during the movement, the camera will vibrate. Due to the vibration of the camera, it will interfere with the video signal collected by the camera, resulting in a position difference between the final latch and the buckle. This position difference may cause the latch to fail to enter the buckle smoothly. In addition, since the latch assembly connected to the robotic arm cannot be adjusted according to the depth of the buckle, for different vehicle models, the adaptability of the seat belt insertion and extraction force test device in the prior art cannot meet the detection of seat belt buckles for different vehicle models. Summary of the Utility Model

[0004] The main purpose of this application is to provide a seat belt buckle detection device, which can smoothly send the latch of the latch assembly into the buckle by positioning the buckle position through a sensor, and can adjust the latch assembly according to the depth of the buckle to adapt to the seat belt buckles of different vehicle models and perform repeated insertion and extraction tests on the buckle.

[0005] To achieve the above object, this application proposes a seat belt buckle detection device, including:

[0006] A base, fixedly connected to the robotic arm;

[0007] A latch assembly, provided with a latch and an adjustment mechanism, the latch is arranged towards the direction of the seat belt buckle, and the adjustment mechanism is fixedly connected to the base and the latch respectively, and is used to adjust the depth of the latch extending into the buckle;

[0008] The sensor assembly is provided with a distance sensor and a connecting piece, wherein the connecting piece is respectively fixedly connected to the adjustment mechanism and the distance sensor, and the distance sensor is used to collect the distance from the latch assembly to the lock catch;

[0009] The detection device includes a central control, and the distance sensor collects distance information and transmits the distance information to the central control. The central control processes the distance information and drives the mechanical arm to move in the direction of the lock tongue entering and exiting the lock buckle.

[0010] Furthermore, the regulating mechanism comprises:

[0011] A fixing seat, which is fixedly connected to the base along the direction in which the lock tongue enters and exits the lock buckle;

[0012] The housing is open, the locking tongue is arranged on the object and corresponds to the locking position, and the housing can slide relative to the fixing seat;

[0013] A limiting member, which is fixedly connected to the fixing seat and extends into the housing and is arranged parallel to the locking tongue;

[0014] The adjusting screw is arranged between the fixing seat and the shell and is used for adjusting the distance between the fixing seat and the shell.

[0015] Since the locking depths of seat belt buckles of different models are different, the distance between the fixing seat and the shell can be adjusted by adjusting the adjusting screw. Since one end of the limiter extends to the inside of the shell, and when the shell is close to the fixing seat, the depth of the limiter inserted into the shell will be deeper, and conversely, the distance from the lock tongue to the limiter will be shorter (shallower), and the limiter can rest against the extension of the lock buckle and cannot enter the inside of the lock buckle. Therefore, the depth of the limiter to the shell can limit the depth of the lock tongue reaching the lock buckle, thereby being able to adapt to lock buckles of different depths.

[0016] Furthermore, a slide rail is provided on the fixing seat along the direction in which the lock tongue enters and exits the lock buckle, a slide sleeve is slidably connected to the slide rail, and the housing is fixedly connected to the slide sleeve.

[0017] During the adjustment process of the adjusting screw, the slide rail provides support and guidance for the housing to prevent the adjusting screw from being deformed due to the influence of force. The deformed adjusting screw is prone to getting stuck during adjustment.

[0018] Furthermore, one end of the adjusting screw is rotatably connected to the shell, and the other end is provided with a thread. The adjusting screw extends to an end of the fixing seat away from the shell, and the extending end thereof is sleeved with an adjusting nut.

[0019] By rotating the adjusting nut clockwise or counterclockwise to raise or lower the adjusting screw, the distance between the shell and the fixing seat can be adjusted, and the depth of the limiting member in the shell can be adjusted.

[0020] Furthermore, a tension spring is sleeved on the adjusting screw.

[0021] During the adjustment process, the tension spring can relieve the impact force instantaneously received by the housing, ensuring that the housing can be stably lifted or lowered during adjustment.

[0022] Furthermore, a number of intermittently arranged limiting holes are provided along the extending direction of the locking tongue of the adjusting mechanism for fixing the connecting piece.

[0023] The limiting holes can fix the connecting piece, and at the same time, the connecting piece can be fixed at different positions and angles of the adjusting mechanism by using the limiting holes at different positions, so as to be conducive to adjusting the position and angle of the distance sensor to the locking buckle according to the different locking buckle positions of different vehicle models, and further enabling the distance sensor to more accurately locate the position of the locking buckle.

[0024] Furthermore, the angle formed by the connecting piece and the adjusting mechanism is an acute angle.

[0025] This acute angle is to avoid the connecting piece or the distance sensor interfering with the movement process of the locking tongue entering and exiting the locking buckle, that is, the acute angle forms a safe avoidance area to effectively avoid interference movement.

[0026] Furthermore, a support rod is fixed on the base, and fixed planes are provided at both ends of the support rod. An adjusting piece fixedly connected to the adjusting mechanism is provided on the fixed plane at one end, and a plurality of adjusting holes are provided on the adjusting piece;

[0027] A fixing piece is provided on the fixed plane at the other end for fixing the position of the adjusting piece relative to the support rod.

[0028] By adjusting holes at different positions, the lateral distance between the adjusting mechanism and the base can be appropriately adjusted, so as to adapt to the lateral distances of different locking buckles, always enabling the distance sensor to effectively act on the locking buckle, avoiding the situation that the distance sensor can only collect position information when it is too close to the locking buckle, and thus effectively avoiding the collision between the detection needle on the distance sensor and the locking buckle.

[0029] A seat belt buckle detection device proposed by the present utility model has the following beneficial effects:

[0030] (1) The present utility model uses a distance sensor to locate the position of the seat belt buckle, and then transmits the collected position information to the central control. The central control drives the robotic arm to reciprocate along the direction of the locking tongue entering and exiting the locking buckle, and performs repeated plugging and unplugging tests on the locking tongue and the locking buckle, avoiding the possibility of jitter occurring when using a camera to capture actions in the prior art, so that the locking tongue can enter the locking buckle more smoothly.

[0031] (2) By providing an adjustment mechanism, the present utility model can adjust the depth of the locking tongue entering the buckle, so that the locking tongue can be adapted to the seat belt buckles of different vehicle models (mainly referring to buckles with different depths). Description of the Drawings

[0032] Figure 1 It is a diagram showing the positional relationship between a seat belt buckle detection device of the present utility model and a buckle;

[0033] Figure 2 It is a schematic structural diagram of a seat belt buckle detection device of the present utility model;

[0034] Figure 3 For the present utility model Figure 2 It is a partially enlarged schematic structural diagram of a-a in the present utility model;

[0035] Figure 4 It is a schematic side structural diagram of a seat belt buckle detection device of the present utility model;

[0036] Figure 5 It is a schematic structural diagram of a seat belt buckle detection device of the present utility model from one perspective.

[0037] In the figure, 1. Base, 2. Robot arm, 3. Buckle, 4. Seat, 5. Support rod, 6. Fixing member, 7. Adjusting member, 71. Adjusting hole, 8. Adjusting screw, 9. Tension spring, 10. Limiting member, 11. Housing, 12. Locking tongue, 13. Slide rail, 14. Slide sleeve, 15. Connecting member, 16. Fixed seat, 161. Limiting hole, 17. Distance sensor. Detailed Embodiment

[0038] The following describes the embodiments of the present disclosure in detail with reference to the accompanying drawings.

[0039] The following illustrates the embodiments of the present disclosure through specific examples. Those skilled in the art can easily understand other advantages and effects of the present disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts belong to the scope of protection of the present disclosure.

[0040] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "middle", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0041] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. The meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0043] Embodiment

[0044] In the prior art, a seat belt plug-in force test device is generally used to test the pluggability of a seat belt buckle. Since most of the seat belt plug-in force test devices in the prior art use a camera to capture the position of the buckle, and then drive the robotic arm to move to the corresponding position, give a certain signal to the arm, and drive the locking tongue to approach the buckle until the locking tongue enters the buckle. However, the camera moves with the mechanism, and during the movement, the camera will shake. Due to the shaking of the camera, it will interfere with the video signal collected by the camera, resulting in a position difference between the final bolt and the buckle, and this position difference may cause the bolt to fail to enter the buckle smoothly.

[0045] Based on this, this embodiment proposes a seat belt buckle detection device, referring to Figures 1-5, including: a base 1 installed on the robot arm 2 by bolts or other fasteners, a support rod 5 extending from the base 1 in the lateral direction toward the seat 4, and a fixing plane is preset at each end of the support rod 5, a fixing part 6 is provided on the fixing plane at one end, and an adjusting part 7 is provided along the extending direction of the other end. In the present embodiment, the adjusting part 7 is a rod structure, and a plurality of adjusting holes 71 are arranged on the adjusting part 7 along the length direction. The fixing part 6 fixes the adjusting part 7 by fasteners such as bolts or latches. An L-shaped fixing seat 16 is fixedly installed in the vertical direction of the fixing part 6, and a slide rail 13 is fixed on the fixing seat 16 in the vertical direction thereof. A group of adjusting screws 8 are movably connected to the fixing seat 16 in the lateral direction toward the lock buckle 3, and a screw as shown in FIG. is sleeved on the adjusting screw 8. Figure 3 The tension spring 9 shown in the figure is then fixed with one end of the adjusting screw 8 relative to the fixing seat 16 through the adjusting nut, and the other end of the adjusting screw 8 is fixed to an open object. A locking tongue 12 is fixedly installed on the object along the direction of the lock buckle 3 entering and exiting, and a limiting member 10 is fixed on the fixing seat 16 in a direction parallel to the locking tongue 12, wherein the limiting member 10 extends into the housing 11, wherein a through hole is provided on the housing 11, so that the limiting member 10 can pass smoothly. For details, please refer to Figure 4 A sliding sleeve 14 is fixed to one end of the housing 11 facing the slide rail 13, and the sliding sleeve 14 slides on the slide rail 13, so that the housing 11 can slide relative to the fixed seat 16. Figures 4-5 A plurality of limiting holes 161 are arranged at one end of the fixing seat 16 away from the housing 11 in a direction parallel to the locking tongue 12 , a connecting member 15 is fixed in any one of the limiting holes 161 by a latch, and a distance sensor 17 is fixedly mounted on the connecting member 15 .

[0046] It should be noted that the reference Figure 1, a latch 3 is provided on the vehicle seat 4. The robotic arm 2 is a six-axis robotic arm with an existing structure, and its fixed tabletop and the fixed table of the vehicle seat 4 are in the same plane. In this embodiment, the selected model of the distance sensor 17 is: TCRT5000. At the same time, the detection device includes a central control unit. The distance sensor 17 collects distance information and transmits the distance information to the central control unit. The central control unit processes the distance information and drives the robotic arm 2 to move in the direction of the locking tongue 12 entering and exiting the latch 3. More specifically, the central control unit referred to in this embodiment is the commonly used Arduino Uno controller in the prior art for vehicle seat belt latch detection devices. The Arduino Uno controller drives the operation of the robotic arm 2 through a stepper motor. When the distance sensor 17 is close to 5-10 mm from the highest point of the outer contour of the latch 3, it transmits a signal to the Arduino Uno controller. At this time, the Arduino Uno controller gives a signal to the stepper motor, and the stepper motor drives the robotic arm 2 to find the position of the latch 3, and then drives the locking tongue 12 to move in the direction of entering and exiting the latch 3. Specifically, the output pin of the distance sensor 17 is connected to the digital input pin of the Arduino Uno controller, for example, connected to input pin 2, and the power pin of the distance sensor 17 is connected to the 5V pin of the Arduino Uno controller to supply power to the distance sensor 17. The ground wire (GND) of the distance sensor 17 is connected to the ground wire pin (GND) of the Arduino Uno controller. The signal pin of the stepper motor of the robotic arm 2 is connected to the digital output pin of the Arduino Uno controller, for example: connected to digital pin 9. The power pin of the stepper motor of the robotic arm 2 is connected to the 5V pin of the Arduino Uno controller to supply power to the stepper motor, and the ground wire (GND) of the stepper motor of the robotic arm 2 is connected to the ground wire pin (GND) of the Arduino Uno controller.

[0047] It should be noted that the Arduino Uno controller is a widely used open-source microcontroller board designed to simplify electronic prototyping and fabrication. It is based on Atmel's ATmega328P microcontroller and is designed and manufactured by the Arduino development team. The Arduino Uno has 14 digital pins and 6 analog input pins, which can be used to connect sensors, perform actions, and communicate with other devices.

[0048] In this embodiment, through the adjustment holes 71 at different positions, the lateral distance between the adjustment mechanism and the base 1 can be appropriately adjusted, so as to adapt to the lateral distances of different latches 3, and always enable the distance sensor 17 to effectively act on the latch 3, avoiding the situation that the distance sensor 17 can only collect position information when it is too close to the latch 3, thereby effectively preventing the detection needle on the distance sensor 17 from colliding with the latch 3.

[0049] In this embodiment, since the depths of the seat belt buckles in different vehicle models when the locks are in place are different, by adjusting the adjusting screw rod 8, the distance between the fixed seat 16 and the housing 11 can be adjusted. Since one end of the limiting member 10 extends to the inside of the housing 11, and when the housing 11 approaches the fixed seat 16, the deeper the limiting member 10 is inserted into the housing 11, on the contrary, the shorter (shallower) the distance from the locking tongue 12 to the limiting member 10 is. And the limiting member 10 can abut against the outer extension of the buckle 3 and cannot enter the inside of the buckle 3. Therefore, the depth of the limiting member 10 inside the housing 11 can limit the depth of the locking tongue 12 reaching inside the buckle 3, so as to be adapted to buckles 3 with different depths.

[0050] In this embodiment, during the adjustment of the adjusting screw rod 8, the slide rail 13 provides support and guidance for the housing 11, avoiding the deformation of the adjusting screw rod 8 due to the influence of force, and the deformed adjusting screw rod 8 is prone to jamming during adjustment.

[0051] In this embodiment, by rotating the adjusting nut clockwise or counterclockwise, the adjusting screw rod 8 is lifted or lowered, so that the distance between the housing 11 and the fixed seat 16 can be adjusted, and further the depth of the limiting member 10 inside the housing 11 can be adjusted.

[0052] In this embodiment, the limiting hole 161 can fix the connecting member 15, and at the same time, by using the limiting holes 161 at different positions, the connecting member 15 can be fixed at different positions and angles of the adjusting mechanism, so as to be beneficial to adjusting the position and angle of the distance sensor 17 relative to the buckle 3 according to the positions of the buckles 3 of different vehicle models, and further enabling the distance sensor 17 to more accurately locate the position of the buckle 3.

[0053] In this embodiment, the angle formed by the connecting member 15 and the adjusting mechanism is an acute angle. This acute angle is to avoid the interference of the connecting member 15 or the distance sensor 17 with the movement process of the locking tongue 12 entering and exiting the buckle 3, that is, the acute angle forms a safety avoidance interval to effectively avoid interference movement.

[0054] The above is only to illustrate the implementation manners of the present invention and is not used to limit the present invention. For those skilled in the art, any modifications, equivalent replacements, improvements, etc. made without creative labor within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A seat belt buckle detection device, characterized in that, include: A base, fixedly connected to the robotic arm; The latch assembly is provided with a lock tongue and an adjustment mechanism, wherein the lock tongue is arranged toward the buckle direction of the safety belt, and the adjustment mechanism is fixedly connected to the base and the lock tongue respectively to adjust the depth of the lock tongue extending into the buckle; The sensor assembly is provided with a distance sensor and a connecting piece, wherein the connecting piece is respectively fixedly connected to the adjustment mechanism and the distance sensor, and the distance sensor is used to collect the distance from the latch assembly to the lock catch; The detection device includes a central control, and the distance sensor collects distance information and transmits the distance information to the central control. The central control processes the distance information and drives the mechanical arm to move in the direction of the lock tongue entering and exiting the lock buckle.

2. The seat belt buckle detection device according to claim 1, characterized in that, The regulating mechanism comprises: A fixing seat, which is fixedly connected to the base along the direction in which the lock tongue enters and exits the lock buckle; The housing is open, the locking tongue is arranged on the object and corresponds to the locking position, and the housing can slide relative to the fixing seat; A limiting member, which is fixedly connected to the fixing seat and extends into the housing and is arranged parallel to the locking tongue; The adjusting screw is arranged between the fixing seat and the shell and is used for adjusting the distance between the fixing seat and the shell.

3. The seat belt buckle detection device according to claim 2, characterized in that, A slide rail is arranged on the fixing seat along the direction in which the lock tongue enters and exits the lock buckle, a slide sleeve is slidably connected to the slide rail, and the housing is fixedly connected to the slide sleeve.

4. The seat belt buckle detection device according to claim 2, characterized in that, One end of the adjusting screw is rotatably connected to the shell, and the other end is provided with a thread. The adjusting screw extends to an end of the fixing seat away from the shell, and the extending end is sleeved with an adjusting nut.

5. The seat belt buckle detection device according to claim 2, characterized in that A tension spring is sleeved on the adjusting screw.

6. The seat belt buckle detection device according to claim 1, characterized in that, The adjustment mechanism is provided with a plurality of intermittently arranged limiting holes along the extending direction of the locking tongue, which are used to fix the connecting piece.

7. A seat belt buckle detection device according to claim 1, characterized in that, The angle formed by the connecting member and the adjusting mechanism is an acute angle.

8. The seat belt buckle detection device according to claim 1, wherein, A support rod is fixed on the base, and fixing planes are provided at both ends of the support rod. An adjusting member fixedly connected to the adjusting mechanism is provided on the fixing plane at one end, and a plurality of adjusting holes are provided on the adjusting member. A fixing piece is provided on the fixing plane at the other end, which is used to fix the position of the adjusting piece relative to the supporting rod.

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