Automobile switch detection equipment

Abstract

The invention relates to automobile switch detection equipment, and relates to the technical field of detection equipment, the automobile switch detection equipment comprises a base station and a display screen located on the base station, a rotating disc is rotatably arranged on the upper side surface of the base station, a driving source for driving the rotating disc to rotate is fixedly arranged in the base station, and a detection cavity for horizontally placing the rotating disc is formed in the base station; a detection piece is arranged in the detection cavity, and a half of the rotating disc is exposed on the outer side surface of the detection cavity; a partition plate used for blocking the opening of the detection cavity and bases located on the two sides of the partition plate are fixedly arranged on the rotating disc, and detection clamping grooves allowing the switches to be clamped in and electrically connected with the display screen are fixedly formed in the bases; the key performance of the switch is detected when the switch is located outside the detection cavity, and the backlight performance of the switch is detected by the detection piece when the switch is located inside the detection cavity; according to the detection equipment, double-station detection is adopted, key pressing performance detection and backlight performance detection can be carried out on the two switches at the same time, and the performance detection efficiency of the automobile switches is improved.

Description

Technical Field

[0001] The present application relates to the technical field of detection equipment, and in particular to an automobile switch detection equipment. Background Art

[0002] The switch that controls the glass lifting inside the car is usually installed above the handle inside the main cab. Its performance must be strictly tested before leaving the factory, covering the normal function of the button pressing function and the stability of the backlight performance. Precise control of the backlight brightness is crucial to ensure that the driver can clearly identify the switch logo and status under various ambient lighting conditions to avoid the risk of misoperation; at the same time, prevent the driver's visual fatigue and glare caused by overly bright backlight, and maintain a good driving experience.

[0003] The current detection method involves a processing table equipped with a display screen, on which a clamping seat is provided, and a connector electrically connected to the display screen is installed on the clamping seat. During the detection process, the control switch is clamped to a specific position on the processing table and electrically connected to the connector of the clamping seat. Then, the staff presses the switch buttons one by one, and the display screen immediately feedbacks the press test results. Backlight detection is usually carried out simultaneously with the button press detection, requiring the staff to use the naked eye to judge whether the backlight brightness meets the standard.

[0004] However, this method faces significant challenges: the backlight brightness of car control switches of different models varies slightly, making it difficult for the naked eye to accurately distinguish them. In addition, the inconsistency of visual perception standards among individuals can easily lead to misjudgment, mistaking unqualified products for qualified products, thereby increasing the rework rate and reducing overall inspection efficiency. There is room for improvement. Summary of the invention

[0005] The purpose of the present application is to provide an automobile switch detection device to solve the problem of low detection efficiency and easy detection errors of automobile switches in the above-mentioned related technologies.

[0006] The present application provides an automobile switch detection device that adopts the following technical solution: A car switch detection device comprises a base and a display screen located on the base, a rotating disk is rotatably provided on the side surface of the base, a driving source for driving the rotating disk to rotate is fixed inside, a detection cavity for horizontal placement of the rotating disk is opened on the base, a detection component is arranged inside the detection cavity, and half of the rotating disk is exposed on the outer side of the detection cavity; a partition plate for blocking the opening of the detection cavity and a base located on both sides of the partition plate are fixed on the rotating disk, and a detection card slot for the switch to be inserted and electrically connected to the display screen is fixed on the base; when the switch is outside the detection cavity, the button performance of the switch is detected, and when it is inside the detection cavity, the detection component detects the backlight performance of the switch.

[0007] By adopting the above technical solution, when testing the switch, the switch is first inserted into the testing slot on the rotating disk, and the staff presses the switch button inserted in the testing slot to test the key performance of the switch; then the switch rotates to the inside of the testing cavity along with the rotating disk, and the switch is tested for backlight through the testing component; and there are two testing slots, that is, the testing equipment is a double-station test, which can perform button pressing performance test and backlight performance test on two switches at the same time, thereby improving the performance test efficiency of automobile switches.

[0008] Optionally, the detection component is a detection camera fixed on the inner wall of the detection cavity.

[0009] By adopting the above technical solution, due to the application setting of the detection camera, the switch in the detection cavity can be photographed and the picture can be fed back to the display screen. The processing system in the display screen compares and judges the picture and feeds back the judgment result to the display screen, thereby realizing automatic detection of the switch backlight performance.

[0010] Optionally, the base is provided with two clamping rods located at two opposite opening edges of the detection card slot, and one end of the clamping rod is hinged to the upper surface of the base; elastic pads are fixed on the sides of the two clamping rods close to each other, and the base is provided with an adjusting part that drives the two clamping rods to rotate toward or away from each other.

[0011] By adopting the above technical solution, after the switch is inserted into the detection slot, the two clamping rods are driven to rotate toward each other through the adjusting member, so that the elastic pad on the clamping rod can press against the outer side of the switch inserted into the detection slot, thereby improving the installation stability of the switch during the detection process.

[0012] Optionally, the elastic pad is provided with anti-slip grooves.

[0013] By adopting the above technical solution, the stability of the elastic pad when it is pressed against the outer side surface of the switch is improved.

[0014] Optionally, the adjusting member includes an adjusting rod slidably arranged on the upper surface of the base, a first compression spring sleeved on the adjusting rod, and two clamping rods are fixed with bending rods at the ends close to the adjusting rod, and the ends of the bending rods are hinged to the ends of the adjusting rods; a support block is fixed on the base, and the support block is provided with a supporting through hole for the adjusting rod to be inserted and slide, and a retaining ring is fixed on the outer periphery of the end of the adjusting rod away from the bending rod, and the two ends of the first compression spring in a compressed state are respectively pressed against the sides of the support block and the retaining ring close to each other.

[0015] By adopting the above technical solution, the first compression spring in the compressed state continuously squeezes the retaining ring, so that the adjusting rod has the force to slide in the direction away from the bending rod, thereby making the two clamping rods maintain the tendency force to rotate in the direction of approaching each other, thereby realizing the automatic clamping of the clamping rod to the outer side of the switch.

[0016] Optionally, an extrusion block is slidably arranged on the base and a positioning block is fixedly arranged, and a spring is arranged between the extrusion block and the positioning block; the extrusion block is located on the side of the bending rod close to the support block, and the two ends of the spring in a compressed state are respectively fixedly connected to the extrusion block and the side of the extrusion block close to each other, and the side of the extrusion block away from the spring abuts against the side of the bending rod.

[0017] By adopting the above technical solution, under the continuous extrusion of the spring, the side of the extrusion block away from the spring is pressed against the side of the bending rod, further allowing the two clamping rods to maintain a tendency to rotate in a direction approaching each other, thereby improving the stability of the clamping rod when it is pressed against the outer side of the switch.

[0018] Optionally, a cross bar is provided above the base, and guide blocks are fixedly provided at both ends of the cross bar. A guide groove is opened on the clamping rod along its own length direction for the guide block to be inserted and slide; when the two clamping rods are in a state parallel to each other, the two guide blocks can be inserted into the corresponding guide grooves.

[0019] By adopting the above technical solution, when the two clamping rods are in a state of being parallel to each other (locking the switch), the two guide blocks on the cross bar can be inserted into the corresponding guide grooves. At this time, the guide blocks on the cross bar lock the two clamping rods, so that the two clamping rods in this state cannot rotate, thereby further improving the stability of the switch clamped by the clamping rods.

[0020] Optionally, cleaning cotton is fixedly provided on the side of the cross bar facing the base.

[0021] By adopting the above technical solution, the switch button inserted into the detection slot can be cleaned synchronously by the cleaning cotton during the reciprocating sliding of the cross bar on the base, which facilitates the cleaning of the surface of the switch button and improves the accuracy of subsequent backlight detection of the switch button.

[0022] Optionally, a limiting slot coaxial with and connected to the guide slot is provided on the extrusion block, and the guide block can slide along the guide slot to the inside of the limiting slot; after the guide block is inserted into the limiting slot, one side of the cross bar can drive the extrusion block to slide in a direction away from the clamping rod.

[0023] By adopting the above technical solution, after the guide block is inserted into the limit card slot, the staff can drive the cross bar and the extrusion block in this state to slide as a whole in the direction away from the clamping rod, which is convenient for the subsequent rotation of the two clamping rods in the direction away from each other, and release the lock on the switch stuck in the detection card slot, so as to facilitate the removal of the switch from the detection card slot.

[0024] Optionally, an elastic clamping piece is provided on the side surface of the guide clamping block, and a positioning groove for inserting the elastic clamping piece is provided on the inner wall of the limit clamping groove.

[0025] By adopting the above technical solution, when the guide card block is inserted into the limiting card slot, the elastic clamping piece on the guide card block is inserted into the corresponding positioning groove, thereby improving the installation stability of the guide card block.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. When testing the switch, first insert the switch into the test slot on the rotating disk, and the staff presses the switch button in the test slot to test the key performance of the switch; then the switch rotates with the rotating disk to the inside of the test cavity, and then the switch is tested for backlight through the test piece; and there are two test slots, that is, the test equipment is a double-station test, which can perform key pressing performance test and backlight performance test on two switches at the same time, thereby improving the performance test efficiency of automobile switches. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 It is a cross-sectional structural schematic diagram of the installation and matching of the driving source embodied in the first embodiment of the present application; Figure 3 It is a partial cross-sectional structural schematic diagram of the embodiment 1 of the present application embodying the installation cooperation of the rotating disk; Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application; Figure 5 This is a partial structural diagram of the installation and matching of the clamping assembly in Example 2 of the present application; Figure 6 This is a schematic diagram of the structure of the second embodiment of the present application, which embodies the installation and matching of the clamping rod and the adjusting member; Figure 7 It is a partial cross-sectional structural schematic diagram of the installation and matching of the adjustment member in Example 2 of the present application; Figure 8 It is a partial cross-sectional structural schematic diagram of the installation and matching of the locking assembly embodied in the second embodiment of the present application; Fig. 9It is a partial cross-sectional structural schematic diagram of the crossbar installation cooperation embodied in the second embodiment of the present application; Fig.10 yes Fig. 9 Enlarged schematic diagram of part A.

[0029] In the figure, 1, base; 11, display screen; 12, detection chamber; 13, detection member; 131, detection camera; 2, rotating disk; 21, blocking plate; 22, base; 221, detection slot; 23, support block; 231, support through hole; 3, driving source; 31, driving motor; 4, clamping assembly; 41, clamping rod; 411, hinge shaft; 412, bending rod; 413, guide slide; 42, adjusting member ; 421, adjusting rod; 4211, retaining ring; 422, first compression spring; 43, elastic pad; 431, anti-slip pattern; 5, locking assembly; 51, extrusion block; 511, limiting slot; 512, positioning groove; 52, positioning block; 53, spring; 6, cross bar; 61, guide block; 611, placement slot; 62, cleaning cotton; 63, elastic clamp; 631, second compression spring; 632, arc-shaped protrusion. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0031] Embodiment 1: Reference Figure 1 , Figure 2 and Figure 3 , an automobile switch detection device, comprising a base 1 and a display screen 11 located on the base 1, wherein a rotating disk 2 is rotatably provided on the side of the base 1, a driving source 3 for driving the rotating disk 2 to rotate is fixed inside, a detection cavity 12 for horizontal placement of the rotating disk 2 is opened on the base 1, and a detection member 13 is arranged inside the detection cavity 12; A blocking plate 21 is fixedly provided in the middle of the upper surface of the rotating disk 2, and a base 22 is fixedly provided on the rotating disk 2 and located on both sides of the dividing plate, and a detection card slot 221 is fixedly provided on the base 22 for the switch to be inserted and electrically connected to the display screen 11; when the rotating disk 2 is installed, half of the rotating disk 2 is exposed on the outer side of the detection cavity 12, and the blocking plate 21 is used to block the opening of the detection cavity 12 to shield light, so as to facilitate the subsequent detection of the backlight performance of the switch; When the car switch is outside the detection cavity 12, the staff presses the switch button inserted into the detection slot 221 to detect the key performance of the switch; when the switch in the detection slot 221 rotates to the inside of the detection cavity 12 along with the rotating disk 2, the detection member 13 detects the backlight performance of the switch.

[0032] Reference Figure 2The driving source 3 is a driving motor 31 fixedly mounted inside the base 1, and the output shaft of the driving motor 31 passes through the upper side of the base 1 and is coaxially fixedly connected to the center of the rotating disk 2; the detection component 13 is a CDD detection camera 131 fixedly mounted on the inner wall of the detection cavity 12, which is used to take pictures of the switch in the detection cavity 12 and feed the pictures back to the display screen 11. The processing system in the display screen 11 compares and judges the pictures and feeds back the judgment results to the display screen 11, thereby realizing automatic detection of the backlight performance of the switch.

[0033] The implementation principle of the embodiment of the present application is: When testing the switch, the switch is first inserted into the detection slot 221 on the rotating disk 2, and the staff presses the switch button inserted in the detection slot 221 to test the button performance of the switch; then the switch rotates with the rotating disk 2 to the inside of the detection cavity 12, and then the switch is backlight tested through the detection camera 131; and there are two detection slots 221, that is, the detection equipment is a double-station detection, so the switch is cycled back and forth to perform button pressing performance tests and backlight performance tests.

[0034] Embodiment 2: Reference Figure 4 , Figure 5 and Figure 6 The embodiment of the present application is different from the embodiment 1 in that a clamping assembly 4 is provided above the base 22, wherein the clamping assembly 4 includes an adjusting member 42 provided on the base 22 and two clamping rods 41 located at two opposite opening edges of the detection slot 221, wherein one end of the clamping rod 41 is hinged to the upper surface of the base 22 through a hinge shaft 411; The adjusting member 42 is used to drive the two clamping rods 41 to rotate around the hinge shaft 411 in the direction of approaching or moving away from each other; elastic pads 43 made of rubber material are fixed on the sides of the two clamping rods 41 that are close to each other, and anti-slip grooves 431 are formed on the elastic pads 43; the elastic pads 43 on the clamping rods 41 can press tightly against the outer side of the switch inserted into the detection slot 221.

[0035] Reference Figure 6 and Figure 7 The adjusting member 42 includes an adjusting rod 421 slidably disposed on the upper surface of the base 22, a first compression spring 422 sleeved on the adjusting rod 421, and a bending rod 412 is fixedly disposed at the end of the two clamping rods 41 close to the adjusting rod 421, wherein the end of the bending rod 412 is hinged to the end of the adjusting rod 421; A support block 23 is fixed on the base 22. The support block 23 is provided with a support through hole 231 for the adjustment rod 421 to be inserted and slide. A retaining ring 4211 is integrally formed on the outer periphery of the end of the adjustment rod 421 away from the bending rod 412. The two ends of the first compression spring 422 in a compressed state are respectively pressed against the side surfaces of the support block 23 and the retaining ring 4211 that are close to each other. The first compression spring 422 in a compressed state continuously presses the retaining ring 4211, so that the adjustment rod 421 has a force to slide in a direction away from the bending rod 412, thereby maintaining the tendency force for the two clamping rods 41 to rotate in a direction close to each other.

[0036] Reference Figure 8 and Fig. 9 A locking assembly 5 is provided on the base 22, and the locking assembly 5 includes an extrusion block 51 slidably arranged on the base 22, a positioning block 52 fixedly arranged on the base 22, and a spring 53 located between the extrusion block 51 and the positioning block 52; the extrusion block 51 is located on the side of the bending rod 412 close to the support block 23, and the two ends of the spring 53 in a compressed state are respectively fixedly connected to the extrusion block 51 and the side of the extrusion block 51 close to each other; under the continuous extrusion of the spring 53, the side of the extrusion block 51 away from the spring 53 is pressed against the side of the bending rod 412, thereby maintaining the tendency force for the two clamping rods 41 to rotate in the direction of approaching each other.

[0037] Reference Figure 8 A cross bar 6 is provided above the base 22, and guide blocks 61 are fixedly provided on the sides of both ends of the cross bar 6 close to the base 22, wherein the clamping rod 41 is provided with a guide slot 413 for the guide block 61 to be inserted and slided along its length direction, and the cross-sectional shapes of the guide block 61 and the guide slot 413 are both dovetail-shaped; When the two clamping rods 41 are in a state of being parallel to each other, the two guide blocks 61 on the cross bar 6 can be inserted into the corresponding guide grooves 413, which can enable the cross bar 6 to slide back and forth above the base 22, and at the same time lock the two clamping rods 41, so that the two clamping rods 41 in this state cannot rotate, thereby improving the stability of the switch clamped by the clamping rods 41.

[0038] Reference Figure 8 A cleaning cotton 62 made of sponge material is fixed on the side of the cross bar 6 facing the base 22; when the cross bar 6 slides back and forth on the base 22, the switch button inserted into the detection slot 221 can be cleaned synchronously, which is convenient for cleaning the surface of the switch button.

[0039] Reference Figure 8 The extrusion block 51 is provided with a limit slot 511 which is coaxial with and connected to the guide slot; the staff can control the cross bar 6 to slide in a direction close to the extrusion block 51, so that the guide slot 61 slides along the guide slot to the inside of the limit slot 511; After the guide block 61 is inserted into the limit slot 511 , the staff can drive the cross bar 6 and the extrusion block 51 in this state to slide as a whole in a direction away from the clamping rod 41 , so as to facilitate the subsequent rotation of the two clamping rods 41 in a direction away from each other.

[0040] Reference Fig. 9 and Fig.10 An elastic clamping piece 63 is provided on the side of the guide block 61, wherein the elastic clamping piece 63 includes a second compression spring 631 and an arc-shaped protrusion 632. A placement groove 611 for the second compression spring 631 to be placed is provided on the side of the guide block 61. The second compression spring 631 squeezes the arc-shaped protrusion 632 so that a part of the arc-shaped protrusion 632 protrudes out of the placement groove 611, and the protruding part of the arc-shaped protrusion 632 is an arc surface, and the arc length corresponding to the arc surface is a minor arc; a positioning groove 512 is provided on the inner wall of the limiting clamping groove 511 for the protruding part of the arc-shaped protrusion 632 to be inserted.

[0041] The implementation principle of the embodiment of the present application is: After the automobile switch is installed inside the detection card slot 221 on the base 22, the first compression spring 422 in the compressed state continuously squeezes the retaining ring 4211, so that the adjusting rod 421 has the force to slide in the direction away from the bending rod 412, thereby making the two clamping rods 41 maintain the tendency to rotate in the direction of approaching each other, so that the elastic pad 43 on the clamping rod 41 presses against the two opposite sides of the switch; then, force is applied to the cross bar 6 located above the extrusion block 51, so that it slides to the top of the clamping rod 41, that is, the guide block 61 is inserted into the guide slot 413, and the state of the two clamping rods 41 is locked; and in this state, the cleaning cotton 62 on the cross bar 6 can clean the surface of the switch button in the detection card slot 221; When the switch in the detection slot 221 needs to be removed, the cross bar 6 is moved back to the top of the extrusion block 51 to release the lock on the two clamping rods 41. Then the staff applies force to drive the cross bar 6 to slide in the direction away from the extrusion rod, so that the extrusion block 51 slides away from the detection slot 221, and then pushes the adjustment rod 421 in the direction close to the detection slot 221, so that the two clamping rods 41 rotate in the direction away from each other, which facilitates the removal of the switch from the detection slot 221.

[0042] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automobile switch detection device, characterized in that: The invention comprises a base (1) and a display screen (11) located on the base (1); a rotating disk (2) is rotatably provided on the upper side of the base (1); a driving source (3) is fixed inside the rotating disk (2) for driving the rotating disk (2) to rotate; a detection cavity (12) is provided on the base (1) for the rotating disk (2) to be horizontally placed; a detection element (13) is arranged inside the detection cavity (12); and half of the rotating disk (2) is exposed on the outer side of the detection cavity (12); The rotating disk (2) is fixedly provided with a partition plate for blocking the opening of the detection cavity (12) and a base (22) located on both sides of the partition plate, and the base (22) is fixedly provided with a detection card slot (221) for the switch to be inserted and electrically connected to the display screen (11); when the switch is outside the detection cavity (12), the key performance of the switch is detected, and when it is inside the detection cavity (12), the detection component (13) detects the backlight performance of the switch.

2. The automobile switch detection device according to claim 1, characterized in that: The detection component (13) is a detection camera (131) fixedly mounted on the inner wall of the detection cavity (12).

3. The automobile switch detection device according to claim 1, characterized in that: The base (22) is provided with two clamping rods (41) located at two opposite opening edges of the detection slot (221), and one end of the clamping rod (41) is hinged to the upper surface of the base (22); elastic pads (43) are fixedly provided on the sides of the two clamping rods (41) close to each other, and the base (22) is provided with an adjusting member (42) for driving the two clamping rods (41) to rotate toward or away from each other.

4. The automobile switch detection device according to claim 3, characterized in that: The elastic pad (43) is fixedly provided with anti-slip grooves (431).

5. The automobile switch detection device according to claim 3, characterized in that: The adjusting member (42) comprises an adjusting rod (421) slidably arranged on the upper surface of the base (22), a first compression spring (422) sleeved on the adjusting rod (421), and two clamping rods (41) are fixedly provided with a bending rod (412) at the end close to the adjusting rod (421), and the end of the bending rod (412) is hinged to the end of the adjusting rod (421); A support block (23) is fixedly provided on the base (22), and the support block (23) is provided with a support through hole (231) for the adjustment rod (421) to be inserted and slide. A retaining ring (4211) is fixedly provided on the outer periphery of the end of the adjustment rod (421) away from the bending rod (412), and the two ends of the first compression spring (422) in a compressed state are respectively pressed against the side surfaces of the support block (23) and the retaining ring (4211) that are close to each other.

6. The automobile switch detection device according to claim 5, characterized in that: The base (22) is provided with an extrusion block (51) slidably and a positioning block (52) fixedly arranged thereon, and a spring (53) is arranged between the extrusion block (51) and the positioning block (52); The extrusion block (51) is located on the side of the bending rod (412) close to the support block (23), and the two ends of the spring (53) in a compressed state are respectively fixedly connected to the extrusion block (51) and the side of the extrusion block (51) close to each other, and the side of the extrusion block (51) away from the spring (53) abuts against the side of the bending rod (412).

7. The automobile switch detection device according to claim 6, characterized in that: A cross bar (6) is provided above the base (22), and guide blocks (61) are fixedly provided at both ends of the cross bar (6). A guide slot (413) is provided on the clamping rod (41) along its length direction for the guide block (61) to be inserted and slide; when the two clamping rods (41) are in a state parallel to each other, the two guide blocks (61) can be inserted into the corresponding guide slots (413).

8. The automobile switch detection device according to claim 7, characterized in that: Cleaning cotton (62) is fixedly arranged on the side of the cross bar (6) facing the base (22).

9. The automobile switch detection device according to claim 7, characterized in that: The extrusion block (51) is provided with a limiting slot (511) which is coaxial with and connected to the guide slot, and the guide block (61) can slide along the guide slot to the inside of the limiting slot (511); After one side of the cross bar (6) is inserted into the limiting slot (511) by the guide clamping block (61), the cross bar (6) in this state can drive the extrusion block (51) to slide in a direction away from the clamping rod (41).

10. The automobile switch detection device according to claim 9, characterized in that: An elastic clamping piece (63) is provided on the side surface of the guide clamping block (61), and a positioning groove (512) for inserting the elastic clamping piece (63) is provided on the inner wall of the limiting clamping groove (511).

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