A shift panel with infrared pressure touch and vibration feedback

Abstract

The present invention provides a shift panel with infrared pressure touch and vibration feedback, belonging to the technical field of automobile parts, and comprising a panel bracket, a panel, a main control board, an infrared sensor, a plurality of elastic support components and an actuator; the present invention has infrared pressure touch and vibration feedback functions, so that users can sense the operation by touch, especially during high-speed driving, which makes it difficult for users to quickly identify and accurately judge the triggering state of touch buttons, so vibration feedback is adopted to further improve the safety of vehicle driving while enhancing human-computer interactivity; at the same time, the elastic support component ensures that the panel can vibrate in the Z direction relative to the panel bracket, and an elastic connection structure is also arranged between the two to ensure the Z-direction elastic support and vibration buffering of the middle part of the panel, and an elastic support structure is further arranged between the two to ensure the Z-direction rebound force of the edge of the panel, which can assist the panel not to be loose in the initial state.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts, and in particular to a shift panel with infrared pressure touch and vibration feedback. Background Art

[0002] With the rapid progress of science and technology, people's pursuit of quality of life is getting higher and higher. As an important means of transportation to improve people's daily life, cars have become more and more indispensable. People are becoming more and more picky about the comfort, safety and reliability of cars. Therefore, the requirements for various car manufacturers are getting higher and higher. In addition, the improvement of advanced technology, structural design and other methods is also conducive to car manufacturers to save production costs and increase their own market competitiveness.

[0003] Among them, the shift panel, as an important part of the internal components, is directly related to the operability and safety of the entire vehicle.

[0004] The touch-sensitive shift panel in the prior art has the problem that it is difficult for users to quickly identify and accurately determine the triggering status of the touch buttons, especially when driving at high speeds, when users need to concentrate on driving. Therefore, it is urgent to design a shift panel that allows users to quickly perceive the triggering status of the touch buttons. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art and to provide a shift panel with infrared pressure touch and vibration feedback.

[0006] The technical solution adopted by the present invention is as follows: a shift panel with infrared pressure touch and vibration feedback, comprising a panel bracket, a panel and a main control board, the main control board is installed on the panel bracket and is located between the panel and the panel bracket, an infrared sensor is connected to the main control board, a displacement detection end is arranged on the position of the panel relative to the infrared sensor, the infrared sensor is used to identify the change in the Z-direction distance between the displacement detection end and the infrared sensor caused by the pressure on the panel, and feed back to the main control board, a plurality of elastic support components and an exciter for making the panel vibrate in the Z direction relative to the panel bracket are arranged between the panel and the panel bracket, the exciter is connected to the main control board, a plurality of elastic connection structures for providing Z-direction elastic support for the middle of the panel are evenly arranged on the panel bracket and the middle of the panel, and a plurality of elastic support structures for providing Z-direction rebound force for the edge of the panel are evenly arranged on the panel bracket and the edge of the panel.

[0007] The elastic support assembly includes a spring sheet and a first elastic pad arranged on the panel bracket, the spring sheet includes a connecting portion fixed to the panel bracket and an elastic support portion suspended relative to the panel bracket, a mounting through hole is arranged between the connecting portion and the elastic support portion, the first elastic pad is clamped in the mounting through hole, the panel is provided with a first connecting column connected to the elastic support portion, the circumferential side wall of the first connecting column is provided with a first connecting groove, a bolt sleeve is arranged in the first connecting groove, the first connecting hole is arranged on the elastic support portion, first limiting holes are arranged on both sides of the first connecting hole, the end surface where the first connecting column is connected to the elastic support portion is provided with a second connecting hole and a first limiting column adapted to the first limiting hole, the upper end surface of the first elastic pad extends out of the mounting through hole and abuts between the first connecting column and the spring sheet, and the lower end surface extends out of the mounting through hole and abuts between the spring sheet and the panel bracket.

[0008] The connecting part is located in the middle of the spring sheet, both ends of the spring sheet are elastic support parts, the connecting part is symmetrically provided with two third connecting holes and a second limiting hole is provided between the two third connecting holes, and the panel bracket is provided with a second limiting column adapted to the second limiting hole.

[0009] A limiting protrusion is provided on the end face of the bolt sleeve near the first connecting hole, and a first guide slope is provided on the limiting protrusion. A limiting opening adapted to the limiting protrusion is provided on the inner wall of the first connecting column near the bolt sleeve, and a second guide slope matched with the first guide slope is provided on one side of the limiting opening.

[0010] The elastic connection structure includes a fourth connection hole arranged on the panel bracket, a second elastic pad clamped in the fourth connection hole and a second connection column arranged on the lower end surface of the panel, the fourth connection hole extends from the upper end surface of the second elastic pad and abuts between the second connection column and the panel bracket, an insertion hole is arranged in the middle of the second elastic pad, and an insertion column which can be inserted into the insertion hole is arranged on the lower end surface of the second connection column, a second connection groove is opened on the circumferential side wall, a bolt sleeve is arranged in the second connection groove, a connection channel connected with the second connection groove is arranged in the insertion column, and an annular protrusion is arranged inwardly on the circumferential inner wall of the insertion hole.

[0011] The elastic support structure includes a connecting base arranged on the panel bracket, a connecting groove is arranged on the connecting base, the circumferential side wall of the connecting groove is a slope, an elastic ball is arranged in the connecting groove, and the elastic ball abuts between the slope and the lower end surface of the panel.

[0012] The end surface of the panel facing the panel bracket is provided with a vibration groove for limiting cooperation with the exciter.

[0013] The displacement detection end is a cylindrical protrusion, a conductive rubber layer is provided on the surface of the main control board, and a detection port for inserting the displacement detection end is provided on the conductive rubber layer at a position corresponding to the infrared sensor.

[0014] It also includes an NFC sensing device and a wireless charging device arranged on the panel bracket. The NFC sensing device and the wireless charging device are provided with a cover shell, and the cover shell is snap-connected with the panel bracket.

[0015] The cover shell surface is provided with a plurality of inclined limiting grooves and limiting stop bars matched with the inclined limiting grooves in parallel, and the bottom of the limiting stop bar is provided with a protrusion that can be embedded and matched with the plurality of inclined limiting grooves.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The shift panel in the present invention has infrared pressure touch and vibration feedback functions. It mainly uses infrared sensors to identify the displacement changes of the panel when it is pressed and feeds back to the main control board. At the same time, the main control board controls the actuator to make the panel vibrate at a certain frequency in the Z direction, so that the user can feel the operation by touch. Especially during high-speed driving, it is difficult for the user to quickly identify and accurately judge the triggering state of the touch button. Therefore, vibration feedback is used to enhance human-computer interaction and further improve the safety of vehicle driving;

[0018] 2. The present invention provides a special elastic support component between the panel and the panel bracket to ensure that the panel can vibrate in the Z direction relative to the panel bracket. At the same time, an elastic connection structure is also provided between the two to ensure the Z-direction elastic support and vibration buffering of the middle part of the panel. An elastic support structure is further provided between the two to ensure the Z-direction rebound force of the edge of the panel, which can help the panel not to loosen in the initial state. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still belong to the scope of the present invention.

[0020] Figure 1 It is a schematic diagram of the present invention;

[0021] Figure 2 It is a partial exploded view of the present invention;

[0022] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0023] Figure 4It is a partial schematic diagram of the infrared pressure touch function of the present invention;

[0024] Figure 5 is a cross-sectional view of the elastic support assembly of the present invention;

[0025] Figure 6 An exploded view of the spring piece and the first elastic pad in the present invention;

[0026] Figure 7 is a schematic diagram of a panel in the present invention;

[0027] Figure 8 It is a schematic diagram of the first connecting column and the bolt sleeve being separated in the present invention;

[0028] Fig. 9 A partial cross-sectional view of the assembly of the first connecting column and the bolt sleeve in the present invention;

[0029] Fig.10 It is a schematic diagram of the second connecting column and the bolt sleeve being separated in the present invention;

[0030] Fig.11 is a schematic diagram of the second limiting column in the present invention;

[0031] Fig.12 is a schematic diagram of the elastic connection structure of the present invention;

[0032] Fig.13 is a schematic diagram of the elastic support structure in the present invention;

[0033] Fig.14 It is a schematic diagram of the NFC sensing device, the wireless charging device and the cover in the present invention;

[0034] In the figure, 1-panel bracket, 101-second limiting column, 2-panel, 21-displacement detection end, 22-first connecting column, 221-second connecting hole, 222-first limiting column, 223-limiting mouth, 224-second guide slope, 23-first connecting groove, 24-bolt sleeve, 241-limiting protrusion, 242-first guide slope, 25-second connecting column, 251-insertion column, 252-second connecting groove, 253-connecting channel, 26-vibration groove, 3-elastic connection structure, 31-fourth connecting hole, 4-elastic support structure, 41-connecting base, 42-connecting recess Groove, 43-slope, 44-elastic ball, 5-main control board, 6-infrared sensor, 7-actuator, 8-spring, 81-connecting part, 811-third connecting hole, 812-second limiting hole, 82-elastic supporting part, 821-first connecting hole, 822-first limiting hole, 83-mounting through hole, 9-first elastic pad, 10-second elastic pad, 1001-jack, 1002-annular protrusion, 11-conductive rubber layer, 111-detection port, 12-NFC sensing device, 13-wireless charging device, 14-cover, 141-limiting inclined groove, 142-limiting gear bar. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0037] The directions and positions mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "top", "bottom", "side", etc., are only for reference to the directions or positions of the drawings. Therefore, the directions and positions used are for explaining and understanding the present invention, but not for limiting the scope of protection of the present invention.

[0038] like Figures 1 to 14 As shown, an embodiment of the present invention is provided:

[0039] A shift panel with infrared pressure touch and vibration feedback, comprising a panel bracket 1, a panel 2 and a main control board 5, wherein the main control board 5 is mounted on the panel bracket 1 and is located between the panel 2 and the panel bracket 1, and an infrared sensor 6 is connected to the main control board 5, and a displacement detection end 21 is arranged at a position of the panel 2 relative to the infrared sensor 6, and the infrared sensor 6 is used to identify the change in the Z-direction distance between the displacement detection end 21 and the infrared sensor 6 caused by the pressure on the panel 2, and to feed back to the main control board 5, and a plurality of elastic support components and an exciter 7 for making the panel 2 vibrate in the Z direction relative to the panel bracket 1 are arranged between the panel 2 and the panel bracket 1, and the exciter 7 is connected to the main control board 5. The shift panel has infrared pressure touch and vibration feedback. The touch and vibration feedback function mainly uses the infrared sensor 6 to identify the displacement change of the panel when it is pressed and feed it back to the main control board 5. At the same time, the main control board 5 controls the exciter 7 to make the panel 2 vibrate at a certain frequency in the Z direction, so that the user can perceive the operation by touch. Especially during high-speed driving, it is difficult for the user to quickly identify and accurately judge the triggering state of the touch button. Therefore, vibration feedback is adopted to further improve the safety of vehicle driving while enhancing human-computer interactivity. The middle part of the panel bracket 1 and the panel 2 is evenly provided with a plurality of elastic connection structures 3 for providing Z-direction elastic support for the middle part of the panel 2, and the edge of the panel bracket 1 and the panel 2 is evenly provided with a plurality of elastic support structures 4 for providing Z-direction rebound force for the edge of the panel 2.

[0040] In this embodiment, the elastic support component ensures that the panel 2 can vibrate in the Z direction relative to the panel bracket 1. The elastic support component includes a spring piece 8 and a first elastic pad 9 arranged on the panel bracket 1. The spring piece 8 includes a connecting portion 81 fixed to the panel bracket 1 and an elastic support portion 82 suspended relative to the panel bracket 1. A mounting through hole 83 is arranged between the connecting portion 81 and the elastic support portion 82. The first elastic pad 9 is clamped in the mounting through hole 83. The panel 2 is provided with a first connecting column 22 connected to the elastic support portion 82. The circumferential side wall of the first connecting column 22 is provided with a first connecting groove 23. A bolt sleeve 24 is arranged in the first connecting groove 23. This connection structure is easy to assemble and does not require threaded holes to be processed on the panel 2, thereby ensuring the strength of the panel 2. At the same time, the bolt sleeve 24 is used to prevent the bolts from being directly connected to the panel 2, which may cause damage to the panel during vibration. If the bolt sleeve 24 is damaged and the connection fails, it can be replaced without causing the entire panel 2 to be scrapped.

[0041] Furthermore, a first connecting hole 821 is provided on the elastic support portion 82, first limiting holes 822 are provided on both sides of the first connecting hole 821, and the end surface where the first connecting column 22 is connected to the elastic support portion 82 is provided with a second connecting hole 221 and a first limiting column 222 adapted to the first limiting hole 822, wherein at least one of the two first limiting holes 822 is a long waist hole, which can adapt to a certain assembly error. When the elastic support portion 82 is connected to the first connecting column 22, the first limiting column 222 is inserted into the first limiting hole 822, and then cooperated with the bolt connection in the first limiting hole 822, which can avoid the displacement and shaking of the panel 2 in the horizontal direction to the greatest extent.

[0042] Furthermore, the upper end surface of the first elastic pad 9 extends a mounting hole 83 and abuts between the first connecting column 22 and the spring sheet 8, and the lower end surface extends a mounting hole 83 and abuts between the spring sheet 8 and the panel bracket 1. This structure can ensure vibration buffering and noise reduction between the first connecting column 22 and the spring sheet 8, and can also ensure vibration buffering and noise reduction between the spring sheet 8 and the panel bracket 1.

[0043] Furthermore, the connecting portion 81 is located in the middle of the spring sheet 8, and both ends of the spring sheet 8 are elastic support portions 82. The symmetrically arranged elastic support portions 82 improve the connection stability and stability during vibration. The connecting portion 81 is symmetrically arranged with two third connecting holes 811 and a second limiting hole 812 is arranged between the two third connecting holes 811. The panel bracket 1 is provided with a second limiting column 101 adapted to the second limiting hole 812. Similarly, the second limiting hole 812 can be multiple and at least one is a long waist hole, which further avoids the displacement and shaking of the panel 2 in the horizontal direction.

[0044] Furthermore, a limiting protrusion 241 is provided on the end face of the bolt sleeve 24 near the first connecting hole 821, and a first guide slope 242 is provided on the limiting protrusion 241. A limiting opening 223 adapted to the limiting protrusion 241 is provided on the inner wall of the first connecting column 22 near the bolt sleeve 24, and a second guide slope 224 matched with the first guide slope 242 is provided on one side of the limiting opening 223. When the bolt sleeve 24 is installed into the first connecting groove 23, the limiting protrusion 241 cooperates with the limiting opening 223 to prevent the bolt sleeve 24 from falling out.

[0045] In this embodiment, the elastic connection structure 3 includes a fourth connection hole 31 arranged on the panel bracket 1, a second elastic pad 10 clamped in the fourth connection hole 31 and a second connection column 25 arranged on the lower end surface of the panel 2, the fourth connection hole 31 extends from the upper end surface of the second elastic pad 10 and abuts between the second connection column 25 and the panel bracket 1, the second elastic pad 10 can provide Z-direction elastic support and vibration buffering for the middle part of the panel 2, and the second elastic pad 10 wraps and protects the panel bracket 1.

[0046] A socket 1001 is provided in the middle of the second elastic pad 10, and a plug column 251 which can be inserted into the socket 1001 is provided on the lower end surface of the second connecting column 25, and a second connecting groove 252 is provided on the circumferential side wall thereof. A bolt sleeve is provided in the second connecting groove 252, and a connecting channel 253 connected to the second connecting groove 252 is provided in the plug column 251. An annular protrusion 1002 is provided inwardly on the circumferential inner wall of the socket 1001, which can reduce the radial movement of the plug column 251 in the socket 1001.

[0047] In this embodiment, the elastic support structure 4 includes a connecting base 41 arranged on the panel bracket 1, and a connecting groove 42 is arranged on the connecting base 41. The circumferential side wall of the connecting groove 42 is a slope 43. An elastic ball 44 is arranged in the connecting groove 42, and the elastic ball 44 abuts between the slope 43 and the lower end surface of the panel 2. This structure ensures the Z-direction rebound force of the edge of the panel 2, which can help the panel not to be loose in the initial state, and has a simple structure, which is convenient for production and assembly.

[0048] The end surface of the panel 2 facing the panel bracket 1 is provided with a vibration groove 26 for limiting cooperation with the exciter 7 to ensure the position of the vibration point and prevent the vibration source from shifting.

[0049] The displacement detection end 21 is a cylindrical protrusion, and a conductive rubber layer 11 is provided on the surface of the main control board 5. The conductive rubber layer 11 is provided with a detection port 111 for inserting the displacement detection end 21 at a position corresponding to the infrared sensor 6, so that the displacement detection end 21 is aligned with the infrared sensor 6. The detection port 111 is also provided with a shrinkage structure to prevent the displacement detection end 21 from excessive displacement.

[0050] It also includes an NFC sensing device 12 and a wireless charging device 13 arranged on the panel bracket 1. The NFC sensing device 12 and the wireless charging device 13 are provided with a cover 14. The cover 14 is snap-connected with the panel bracket 1. The NFC sensing device 12 and the wireless charging device 13 can be installed in the panel bracket 1 by selecting the better devices in the prior art. A mobile phone is placed on the cover 14, which also has a dust-proof function.

[0051] The surface of the cover shell 14 is provided with a plurality of limiting inclined grooves 141 and a limiting strip 142 matched with the limiting inclined grooves 141. The bottom of the limiting strip 142 is provided with a protrusion that can be embedded and matched with the plurality of limiting inclined grooves 141, which can adapt to mobile phones of different sizes and prevent the mobile phone from shaking significantly during driving.

[0052] A person skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, disk, CD-ROM, etc.

[0053] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A shift panel with infrared pressure touch and vibration feedback, comprising a panel bracket (1), a panel (2) and a main control board (5), characterized in that: The main control board (5) is mounted on the panel bracket (1) and is located between the panel (2) and the panel bracket (1); an infrared sensor (6) is connected to the main control board (5); a displacement detection end (21) is provided at a position of the panel (2) relative to the infrared sensor (6); the infrared sensor (6) is used to identify changes in the Z-direction distance between the displacement detection end (21) and the infrared sensor (6) caused by pressure on the panel (2), and to feed back to the main control board (5); a plurality of elastic support components and an exciter (7) for causing the panel (2) to vibrate in the Z-direction relative to the panel bracket (1) are provided between the panel (2) and the panel bracket (1); the exciter (7) is connected to the main control board (5); a plurality of elastic connection structures (3) for providing Z-direction elastic support for the middle of the panel (2) are evenly provided between the panel bracket (1) and the panel (2); a plurality of elastic support structures (4) for providing Z-direction rebound force for the edge of the panel (2) are evenly provided between the edge of the panel bracket (1) and the panel (2); The elastic support assembly comprises a spring sheet (8) and a first elastic pad (9) arranged on the panel bracket (1); the spring sheet (8) comprises a connecting portion (81) fixed to the panel bracket (1) and an elastic support portion (82) suspended relative to the panel bracket (1); a mounting through hole (83) is provided between the connecting portion (81) and the elastic support portion (82); the first elastic pad (9) is clamped in the mounting through hole (83); the panel (2) is provided with a first connecting column (22) connected to the elastic support portion (82); a first connecting groove (23) is provided on a circumferential side wall of the first connecting column (22); a bolt sleeve (24) is provided in the first connecting groove (23); The elastic support portion (82) is provided with a first connection hole (821), and first limiting holes (822) are provided on both sides of the first connection hole (821); the end surface of the first connection column (22) connected to the elastic support portion (82) is provided with a second connection hole (221) and a first limiting column (222) adapted to the first limiting hole (822); the upper end surface of the first elastic pad (9) extends out of a mounting through hole (83) and abuts between the first connection column (22) and the spring sheet (8); and the lower end surface thereof extends out of a mounting through hole (83) and abuts between the spring sheet (8) and the panel bracket (1).

2. The infrared pressure touch and vibration feedback shift panel according to claim 1, characterized in that: The connecting portion (81) is located in the middle of the spring sheet (8), both ends of the spring sheet (8) are elastic support portions (82), the connecting portion (81) is symmetrically provided with two third connecting holes (811) and a second limiting hole (812) is provided between the two third connecting holes (811), and the panel bracket (1) is provided with a second limiting column (101) adapted to the second limiting hole (812).

3. The infrared pressure touch and vibration feedback shift panel according to claim 1, characterized in that: A limiting protrusion (241) is provided on the end surface of the bolt sleeve (24) close to the first connecting hole (821), and a first guiding slope (242) is provided on the limiting protrusion (241); a limiting opening (223) adapted to the limiting protrusion (241) is provided on the inner wall of the first connecting column (22) close to the bolt sleeve (24), and a second guiding slope (224) matched with the first guiding slope (242) is provided on one side of the limiting opening (223).

4. The infrared pressure touch and vibration feedback shift panel according to claim 1, characterized in that: The elastic connection structure (3) comprises a fourth connection hole (31) arranged on the panel bracket (1), a second elastic pad (10) clamped in the fourth connection hole (31), and a second connection column (25) arranged on the lower end surface of the panel (2); the fourth connection hole (31) extends from the upper end surface of the second elastic pad (10) and abuts between the second connection column (25) and the panel bracket (1); an insertion hole (1001) is arranged in the middle of the second elastic pad (10); a plug column (251) that can be inserted into the insertion hole (1001) is arranged on the lower end surface of the second connection column (25); a second connection groove (252) is opened on the circumferential side wall thereof; a bolt sleeve is arranged in the second connection groove (252); a connection channel (253) connected to the second connection groove (252) is arranged in the plug column (251); and an annular protrusion (1002) is arranged inwardly on the circumferential inner wall of the insertion hole (1001).

5. The infrared pressure touch and vibration feedback shift panel according to claim 1, characterized in that: The elastic support structure (4) comprises a connection base (41) arranged on the panel bracket (1), a connection groove (42) being arranged on the connection base (41), a circumferential side wall of the connection groove (42) being a slope (43), an elastic ball (44) being arranged in the connection groove (42), and the elastic ball (44) being abutted between the slope (43) and the lower end surface of the panel (2).

6. The infrared pressure touch and vibration feedback shift panel according to claim 1, characterized in that: The end surface of the panel (2) facing the panel bracket (1) is provided with a vibration groove (26) for limiting cooperation with the exciter (7).

7. The infrared pressure touch and vibration feedback shift panel according to claim 1, characterized in that: The displacement detection end (21) is a cylindrical protrusion, a conductive rubber layer (11) is provided on the surface of the main control board (5), and a detection port (111) for inserting the displacement detection end (21) is provided at a position of the conductive rubber layer (11) corresponding to the infrared sensor (6).

8. The infrared pressure touch and vibration feedback shift panel according to claim 1, characterized in that: It also comprises an NFC sensing device (12) and a wireless charging device (13) arranged on the panel bracket (1), wherein a cover shell (14) is arranged on the NFC sensing device (12) and the wireless charging device (13), and the cover shell (14) is snap-connected to the panel bracket (1).

9. The infrared pressure touch and vibration feedback shift panel according to claim 8, characterized in that: The surface of the cover shell (14) is provided with a plurality of position limiting inclined grooves (141) and a position limiting stop bar (142) matched with the position limiting inclined grooves (141), and the bottom of the position limiting stop bar (142) is provided with a protrusion that can be embedded and matched with the plurality of position limiting inclined grooves (141).

Images