A gauge for measuring airbag needle density

Abstract

This utility model discloses a gauge for measuring the density of airbag pins. It includes: a gauge body and a fixing plate for placing the airbag. The fixing plate is movably inserted into one end of the gauge body. The upper surface of the gauge body has several arc grooves spaced apart to expose the circular patterns of the airbag, wherein the diameter of one of the arc grooves is the same as the diameter of the circular pattern of the airbag. It also includes a camera for capturing images of the circular pattern of the airbag and a display device for displaying the number of pins in the circular pattern. The camera is movably positioned above the gauge body and equipped with an image processing chip. The camera, image processing chip, and display device are electrically connected. This electrical connection enables automatic counting, replacing manual visual inspection and eliminating counting errors caused by fatigue or dense pin density.

Description

Technical Field

[0001] This utility model relates to the field of airbag technology, and in particular to a gauge for measuring the density of airbag needles. Background Technology

[0002] With the increasing prevalence of automobiles in people's daily lives, traffic safety issues are receiving more and more attention. As an important safety component of automobiles, the performance of airbags is directly related to the life safety of drivers and passengers.

[0003] The needle density of an airbag is one of the key factors affecting its performance, making accurate measurement of the needle density crucial. Currently, conventional tools present several inconveniences when measuring the needle density of circular patterns in airbags. Traditional rulers, with their straight structure, require determining a specific length range around the arc when measuring circular patterns. This is not only cumbersome and inefficient, but also difficult to control, and prone to inaccurate measurements due to visual errors.

[0004] Although there are specialized airbag-type circular needle density gauges that provide positioning assistance for measuring the density of circular needles by setting fixed arc lengths of different diameters, it is still necessary to manually count the number of needles within the fixed arc length to complete the relevant standard determination. This method has obvious drawbacks: on the one hand, manual visual counting is prone to errors due to fatigue, dense needles, or blurred stitches; on the other hand, the counting process depends on manual operation, making it difficult to improve measurement efficiency.

[0005] Therefore, there is an urgent need for a technical solution that can solve the above problems in order to improve the accuracy and efficiency of the density measurement of circular flower-shaped needles for airbags. Utility Model Content

[0006] To address the problems existing in the prior art, this utility model provides a gauge for measuring the density of airbag needles, which can effectively solve the problems existing in the prior art.

[0007] The technical solution of this utility model is:

[0008] According to one aspect of the present invention, the device includes: a fixture body and a fixing plate for placing an airbag, the fixing plate being movably inserted into one end of the fixture body, the upper surface of the fixture body having a plurality of arc grooves spaced apart for exposing the circular flower pattern of the airbag, wherein the diameter of one of the arc grooves is the same as the diameter of the circular flower pattern of the airbag; it also includes a camera for photographing the circular flower pattern of the airbag and a display device for displaying the number of pins of the circular flower pattern of the airbag, the camera being movably disposed above the fixture body, the camera being equipped with an image processing chip, and the camera, the image processing chip, and the display device being electrically connected.

[0009] Furthermore, at least two second sliding grooves are formed at the front and rear ends of the inspection fixture body, the fixing plate is movably disposed in the two second sliding grooves, the front end of the inspection fixture body is provided with a first sliding groove, one end of the fixing plate extends toward the first sliding groove and is provided with a connecting rod, the connecting rod is movably disposed in the first sliding groove to the left and right, and the end of the connecting rod away from the fixing plate is fixed with a handle.

[0010] Furthermore, at least one end of the fixture body is provided with a guide rib extending toward the fixing plate, and at least one end of the fixing plate is formed with a guide groove, wherein the guide rib fits into the guide groove.

[0011] Furthermore, one end of the fixing plate is equipped with a clamping arm for fixing the airbag.

[0012] Furthermore, the upper end of the fixing plate is recessed inward to form a placement groove for placing the airbag.

[0013] Furthermore, it also includes a bracket and a slide rail base. The slider of the bracket is movably embedded in the slide rail base, which is fixed to the rear end of the inspection fixture body. A camera is installed at one end of the bracket, and a display device is installed at the other end.

[0014] Furthermore, at least one roller is laterally mounted on the end of the slider away from the fixture body, and a third groove is correspondingly provided on the inner circumferential surface of the slide rail base, and the roller rolls in the third groove.

[0015] Furthermore, the rear end face of the fixture body is equipped with a plurality of ball-head plungers at intervals, and the positions of the plurality of ball-head plungers correspond one-to-one with the positions of the plurality of arc grooves. The slider is provided with a corresponding positioning groove, wherein the positioning head of one of the ball-head plungers is movably embedded in the positioning groove. The end of the slide rail base near the fixture body is formed with a hollow portion for exposing the slider.

[0016] Furthermore, it also includes a movable rod, which is rotatably mounted on the bracket. A damping hinge is provided between the movable rod and the bracket. An extension plate is fixed to one end of the movable rod. The orthographic projection area of ​​the extension plate covers one of the arc grooves. The camera is fixedly mounted on the extension plate.

[0017] Furthermore, the diameters of the various arc grooves are all different, and the diameters of the various arc grooves are distributed equidistantly on the fixture body in ascending order of size.

[0018] By adopting the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows:

[0019] Firstly, the arc groove of the gauge body directly exposes the area that matches the diameter of the circular pattern of the airbag, replacing the tedious operation of measuring around the arc with a steel ruler and solving the problem of "difficulty in fixing the arc length"; the electrical connection between the camera, image processing chip and display device enables automatic counting, replacing manual visual inspection and eliminating counting errors caused by fatigue and dense pins; the movable design of the camera and fixing plate adapts to different sized patterns while reducing the operational deviation of manual alignment and improving measurement consistency and efficiency.

[0020] Secondly, the second slide of the fixture body, the connecting rod between the first slide and the fixed plate, and the handle enable the fixed plate to move smoothly left and right, and the movement trajectory is controllable. The handle allows the operator to quickly adjust the position of the fixed plate, shortening the alignment time between the pattern and the arc groove, and further improving measurement efficiency.

[0021] Third, the guide ribs of the gauge body fit into the guide groove of the fixed plate, restricting the movement direction of the fixed plate and preventing it from shifting or shaking during sliding. This ensures the alignment accuracy of the circular flower pattern of the airbag with the arc groove and reduces measurement errors caused by positioning deviations.

[0022] Fourth, the clamping arms of the fixing plate can firmly fix the edge of the airbag, preventing the flower pattern and arc groove from misaligning due to airbag displacement during the measurement process, ensuring the stability of the shooting area and guaranteeing the accuracy of the count.

[0023] Fifth, the placement slot of the fixing plate provides pre-positioning space for the airbag, preventing the airbag from deviating from the arc groove due to random placement, thus reducing the number of manual adjustments; the recessed structure can also limit the horizontal sliding of the airbag, and together with the clamping arm, further improve the fixation stability.

[0024] Sixth, the cooperation between the slider of the bracket and the slide rail base enables the camera and the display device to move synchronously left and right, ensuring that the camera can be accurately aligned with the arc grooves of different diameters; the fixed installation of the slide rail base enhances the stability of the bracket, avoids camera shaking affecting the clarity of shooting, and ensures the accuracy of image processing.

[0025] Seventh, the slider's rollers roll in the third groove of the slide rail base, converting the sliding friction between the slider and the slide rail base into rolling friction, reducing movement resistance, making the camera position adjustment easier and smoother, reducing the physical exertion of the operator, and avoiding positioning deviation caused by jamming.

[0026] Eighth, the ball plunger of the inspection fixture body corresponds one-to-one with the positioning groove of the slider. The camera and the arc groove are precisely aligned through mechanical limiting, replacing manual visual alignment and eliminating operational deviations. The hollow part of the slide rail base ensures that the cooperation between the ball plunger and the positioning groove is unobstructed.

[0027] Ninth, the movable rod can be flipped and adjusted in angle via a damping hinge, allowing the camera on the extension board to adapt to different lighting conditions or flower depths, ensuring a clear shooting area; the extension board's arc groove design prevents the shooting range from exceeding the detection area, reduces irrelevant image interference, and improves the counting speed and accuracy of the image processing chip.

[0028] Tenth, several arc grooves of different diameters and equidistantly distributed can be adapted to the size range of various existing airbag circular patterns, eliminating the need to design separate inspection tools for different diameter patterns, thus reducing equipment costs; the equidistant distribution makes it easy for operators to quickly find matching arc grooves, shortening the preparation time and improving the versatility and practicality of the inspection tool. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0031] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0032] Figure 3 This is a schematic diagram of the explosive structure of this utility model. Figure 1 ;

[0033] Figure 4 This is a schematic diagram of the explosive structure of this utility model. Figure 2 ;

[0034] Figure 5 This is a cross-sectional structural diagram of the present invention;

[0035] Figure 6 This is an enlarged structural diagram of point A in this utility model;

[0036] Figure 7 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0037] Figure 8 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 4 ;

[0038] In the diagram: Inspection fixture body-1, arc groove-11, mark-12, first slide groove-13, guide rib-14, second slide groove-15, first mounting groove-16, fixing plate-2, clamping arm-21, guide groove-22, placement groove-23, handle-24, connecting rod-241, slide rail base-3, hollow part-31, third slide groove-32, bracket-4, slider-41, positioning groove-411, second mounting groove-412, display device-5, movable rod-6, damping hinge-61, extension plate-62, camera-7, ball plunger-8, roller-9. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are only for illustrating the present invention and do not limit the scope of the present invention. Similarly, the following embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0040] like Figures 1 to 8 As shown, this solution provides a gauge for measuring the density of airbag needles.

[0041] Please see Figures 1 to 5 The fixture includes: a fixture body 1 and a fixing plate 2 for placing an airbag (not shown). The fixing plate 2 is movably inserted into one end of the fixture body 1. Specifically, at least two second sliding grooves 15 are formed at the front and rear ends of the fixture body 1, and the fixing plate 2 is movably disposed within the two second sliding grooves 15. A first sliding groove 13 is provided at the front end of the fixture body 1. A connecting rod 241 extends from one end of the fixing plate 2 toward the first sliding groove 13 and is movably disposed within the first sliding groove 13. A handle 24 is fixed at the end of the connecting rod 241 away from the fixing plate 2. A guide rib 14 extends from at least one end of the fixture body 1 toward the fixing plate 2, and a guide groove 22 is formed at at least one end of the fixing plate 2. The guide rib 14 fits into the guide groove 22. In this embodiment, there is one guide rib 14, which is located in the middle of the fixture body 1, and the guide groove 22 is correspondingly located in the middle of the fixing plate 2. Furthermore, a clamping arm 21 for securing the airbag is fitted to one end of the fixing plate 2. The clamping arm 21 is detachably fixed to the end of the fixing plate 2 away from the fixture body 1 by bolts. The upper surface of the fixing plate 2 has an inwardly recessed placement groove 23 for placing the airbag. The placement groove 23 serves a positioning function. When the airbag is placed in the placement groove 23, the handle of the clamping arm 21 is turned, and the clamping blocks of the clamping arm 21 clamp the airbag, thereby securing the airbag. The clamping arm 21 is a direct application of existing technology, and its principle will not be elaborated here.

[0042] Please see Figures 1 to 8 The upper surface of the inspection fixture body 1 has several arc-shaped grooves 11 spaced apart for exposing the circular patterns of the airbag. The diameter of one arc-shaped groove 11 is the same as the diameter of the circular pattern of the airbag. Specifically, the diameters of the arc-shaped grooves 11 are all different, and they are evenly distributed on the inspection fixture body 1 in ascending order of diameter. The diameter of the arc-shaped groove 11 can be set appropriately according to the diameter of the circular pattern of the airbag to be inspected. In this embodiment, the arc length of the arc-shaped groove 11 can also be set appropriately according to different requirements. For example, if the needle density requirement is 10±1 needles / 25mm, then the arc length of the arc-shaped groove 11 is 25mm, and the number of pins of the circular pattern of the airbag within the 25mm size range needs to be 10±1 needles.

[0043] Please see Figures 1 to 8 The system also includes a camera 7 for capturing images of the circular pattern of the airbag and a display device 5 for displaying the number of pins in the circular pattern. The camera 7 is movable left and right and is positioned above the fixture body 1. The camera 7 is equipped with an image processing chip (not shown). The camera 7, the image processing chip, and the display device 5 are electrically connected. Specifically, the system also includes a bracket 4 and a slide rail base 3. The slider 41 of the bracket 4 is movable left and right and is embedded in the slide rail base 3. The slide rail base 3 is fixed to the rear end of the fixture body 1. The camera 7 is mounted on one end of the bracket 4, and the display device 5 is mounted on the other end. The system also includes a movable rod 6, which is rotatably mounted on the bracket 4. A damping hinge 61 is provided between the movable rod 6 and the bracket 4. An extension plate 62 is fixed to one end of the movable rod 6. The orthographic projection area of ​​the extension plate 62 covers one of the arc grooves 11. The camera 7 is fixedly mounted on the extension plate 62. The damping hinge 61, the camera 7, and the display device 5 are direct applications of existing technology, and their principles will not be elaborated here.

[0044] Please see Figure 5 and Figure 6 At least one roller 9 is horizontally mounted on the end of the slider 41 away from the inspection body 1, and a third groove 32 is provided on the inner circumferential surface of the slide rail base 3, and the roller 9 rolls in the third groove 32.

[0045] Please see Figure 5 and Figure 6 The rear end face of the fixture body 1 is fitted with a plurality of ball-head plungers 8 at intervals. The positions of the ball-head plungers 8 correspond one-to-one with the positions of the plurality of arc grooves 11. The slider 41 is provided with a corresponding positioning groove 411, in which the positioning head of one of the ball-head plungers 8 is movably embedded in the positioning groove 411. The end of the slide rail base 3 near the fixture body 1 has a hollow portion 31 for exposing the slider 41. The ball-head plungers 8 are a direct application of existing technology, and their principle will not be described in detail here.

[0046] Working principle:

[0047] Place the airbag in the placement slot 23 of the fixing plate 2 with the circular flower-shaped side of the airbag facing upwards. Clamp the edge of the airbag with the clamping arm 21 to ensure that the airbag does not shift during the measurement process. Push the handle 24 to move the connecting rod 241 along the first slide groove 13 of the fixture body 1, so that the fixing plate 2 slides horizontally along the second slide grooves 15 at both ends of the front and rear of the fixture body 1. At the same time, the guide ribs 14 of the fixture body 1 cooperate with the guide grooves 22 of the fixing plate 2 to ensure accurate sliding direction until the edge of the circular flower-shaped side is aligned with the arc groove 11 of the matching diameter on the fixture body 1.

[0048] The support 4 moves along the slide rail base 3. The slider 41 of the support 4 rolls within the third groove 32 of the slide rail base 3 via the roller 9, reducing movement resistance. When the slider 41 moves to the corresponding position of the target arc groove 11, the positioning head of the ball plunger 8 on the rear end face of the fixture body 1 is embedded in the positioning groove 411 of the slider 41. Through mechanical limiting, the camera 7 is precisely aligned with the arc groove 11. The hollow part 31 of the slide rail base 3 ensures that the cooperation between the ball plunger 8 and the positioning groove 411 is not obstructed. If it is necessary to adjust the angle of the camera 7, the movable rod 6 can be flipped through the damping hinge 61 so that the extension plate 62 at one end of the movable rod 6 covers the target arc groove 11, ensuring that the lens of the camera 7 completely covers the exposed circular flower area of ​​the arc groove 11.

[0049] After the detection system is started, the camera 7 on the extension board 62 takes high-definition pictures of the exposed arc-length area within the arc groove 11. The captured image signal is transmitted to the image processing chip equipped with the camera 7, which extracts pin features through a preset algorithm, automatically counts the number of pins in the area, and transmits the results in real time to the display device 5 at the other end of the bracket 4.

[0050] The display device 5 directly presents the counting results, and the operator can quickly determine the pass / fail status based on standards such as "10±1 needles / 25mm". After the measurement is completed, push the bracket 4 to disengage the ball plunger 8 from the positioning groove 411 of the slider 41, release the clamping arm 21 to remove the airbag, and complete a single measurement cycle.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A gauge for measuring airbag needle density, characterized by, include: The fixture body (1) and the fixing plate (2) for placing the airbag are inserted into one end of the fixture body (1) and can be moved left and right. The upper surface of the fixture body (1) is provided with a plurality of arc grooves (11) for exposing the circular flower pattern of the airbag, wherein the diameter of one of the arc grooves (11) is the same as the diameter of the circular flower pattern of the airbag. The fixture body (1) also includes a camera (7) for taking pictures of the circular flower pattern of the airbag and a display device (5) for displaying the number of pins of the circular flower pattern of the airbag. The camera (7) is moved left and right and is set above the fixture body (1). The camera (7) is equipped with an image processing chip. The camera (7), the image processing chip and the display device (5) are electrically connected.

2. A gauge for measuring the density of airbag needles as claimed in claim 1, wherein, The inspection fixture body (1) has at least two second sliding grooves (15) formed at its front and rear ends respectively. The fixing plate (2) is movably disposed in the two second sliding grooves (15). The front end of the inspection fixture body (1) is provided with a first sliding groove (13). One end of the fixing plate (2) extends toward the first sliding groove (13) and is provided with a connecting rod (241). The connecting rod (241) is movably disposed in the first sliding groove (13) to the left and right. The end of the connecting rod (241) away from the fixing plate (2) is fixed with a handle (24).

3. A gauge for measuring the density of airbag needles as recited in claim 2, wherein, The inspection fixture body (1) has a guide rib (14) extending from at least one end toward the fixing plate (2), and the fixing plate (2) has a guide groove (22) formed at at least one end, with the guide rib (14) fitting into the guide groove (22).

4. A gauge for measuring the density of airbag needles as recited in claim 2, wherein, One end of the fixing plate (2) is equipped with a clamping arm (21) for fixing the airbag.

5. A gauge for measuring the density of airbag needles as recited in claim 2, wherein, The upper end of the fixing plate (2) is recessed inward to form a placement groove (23) for placing the airbag.

6. A gauge for measuring the density of airbag needles as recited in claim 1, wherein, It also includes a bracket (4) and a slide rail base (3). The slider (41) of the bracket (4) is movable to the left and right and is embedded in the slide rail base (3). The slide rail base (3) is fixed to the rear end of the inspection fixture body (1). A camera (7) is installed at one end of the bracket (4) and a display device (5) is installed at the other end.

7. A gauge for measuring the density of airbag needles as claimed in claim 6, wherein, At least one roller (9) is horizontally mounted on the end of the slider (41) away from the fixture body (1), and a third groove (32) is provided on the inner circumferential surface of the slide rail base (3), and the roller (9) rolls in the third groove (32).

8. A gauge for measuring the density of airbag needles as recited in claim 6, wherein, The rear end face of the fixture body (1) is fitted with a plurality of ball-head plungers (8) at intervals. The positions of the plurality of ball-head plungers (8) correspond one-to-one with the positions of the plurality of arc grooves (11). The slider (41) is provided with a corresponding positioning groove (411). The positioning head of one of the ball-head plungers (8) is movably embedded in the positioning groove (411). The slide rail base (3) near the fixture body (1) has a hollowed-out portion (31) for exposing the slider (41).

9. A gauge for measuring the density of airbag needles as described in claim 6, characterized in that, It also includes a movable rod (6), which is rotatably mounted on the bracket (4). A damping hinge (61) is provided between the movable rod (6) and the bracket (4). An extension plate (62) is fixedly mounted on one end of the movable rod (6). The orthographic projection area of ​​the extension plate (62) covers one of the arc grooves (11). The camera (7) is fixedly mounted on the extension plate (62).

10. A gauge for measuring the density of airbag needles as recited in claim 1, wherein, The diameters of the various arc grooves (11) are different, and the diameters of the various arc grooves (11) are distributed equidistantly on the fixture body (1) in order of increasing size.

Images