Seat switch structure capable of reducing operation abnormal sound

Abstract

The utility model discloses a seat switch structure capable of reducing operation abnormal sound. Comprising a shell, a PCB arranged in the shell, conductive rubber covering the PCB, a support arranged above the conductive rubber, a swing rod arranged on the support in a swing mode, a sliding block movably arranged on the shell and in linkage with the swing rod, and a pressing block arranged between the swing rod and the conductive rubber. The bottom end of the support abuts against the conductive rubber, a plurality of first protruding blocks are arranged at the top end of the support, the upper end faces of the first protruding blocks are tightly attached to the inner side of the shell, and the matching faces of the first protruding blocks and the shell are of rough face structures. According to the utility model, by reducing the contact area of the bracket and the shell, the surface energy is reduced, and the friction abnormal sound is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to a seat switch structure capable of reducing abnormal operating noise. Background Art

[0002] At present, with more and more functional requirements for automobile seats, the seat adjustment switches use more and more module combinations. For example, the forward and backward sliding of the slide rail, the overall height adjustment of the seat, and the forward and backward angle adjustment of the backrest need to be completed through the combination of four-way modules and two-way modules.

[0003] The existing seat adjustment switch usually includes multiple buttons (such as a seat button for adjusting the seat, a backrest button for adjusting the backrest, a lumbar adjustment button for adjusting the lumbar dislocation, and a leg rest button for adjusting the leg rest). The operation button drives the slider in the corresponding bracket to move. When the slider moves, it causes the corresponding swing rod to swing. The swing rod acts on the pressure block, causing the pressure block to press down on the corresponding conductive rubber, thereby turning on the corresponding conductive disk on the PCB board to achieve the adjustment of the corresponding function of the seat. However, in actual use, when the button is operated, the bracket will move slightly, and the fixed mating surface of the bracket and the shell is tightly attached. When relative displacement occurs, friction noise will occur, affecting the user experience. Utility Model Content

[0004] The utility model aims to provide a seat switch structure with reduced abnormal operating noise. The utility model reduces the surface energy and reduces the abnormal friction noise by reducing the contact area between the bracket and the shell.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a seat switch structure for reducing abnormal operation noise, comprising a shell, a PCB board arranged in the shell, a conductive rubber covered on the PCB board, a bracket arranged above the conductive rubber, a swing rod swingably arranged on the bracket, a slider movably arranged on the shell and linked with the swing rod, and a pressure block arranged between the swing rod and the conductive rubber; the bottom end of the bracket is tightly pressed against the conductive rubber, and the top end of the bracket is provided with a plurality of first protrusions, the upper end surfaces of the first protrusions are tightly fitted with the inner side of the shell, and the mating surfaces of the first protrusions and the shell are rough surface structures.

[0006] By adopting the above technical solution, the matching surfaces of the bracket and the shell are processed into a rough surface structure, and the contact area between the bracket and the shell is reduced to reduce the surface energy and reduce friction and abnormal noise, thereby improving the user experience.

[0007] The utility model is further configured such that the rough surface structure on the first protrusion is a gravel surface.

[0008] By adopting the above technical solution, which is the first implementation mode of the rough surface structure, the surface of the gravel surface structure has granular protrusions, which greatly reduces the contact area between the bracket and the shell, thereby effectively reducing the surface energy.

[0009] The utility model is further configured that a plurality of groups of clamping protrusions are provided on the inner side of the shell, and a columnar protrusion for clamping against the upper end surface of the first protrusion is provided on the clamping protrusion.

[0010] By adopting the above technical solution, the contact area between the housing and the bracket can be further reduced.

[0011] The utility model is further configured such that the bracket is provided with a positioning protrusion extending vertically at a position corresponding to each side of the first protrusion, and the inner side of the shell is provided with a plurality of positioning guide grooves extending vertically and respectively matching with the corresponding positioning protrusions.

[0012] By adopting the above technical solution, not only can the bracket be positioned, but also its installation operation is convenient.

[0013] The utility model is further configured such that a second protrusion is provided at a position corresponding to the bottom of the bracket below each first protrusion, the cross-section of the second protrusion is in a cross shape, a positioning groove for the second protrusion to be embedded is provided on the conductive rubber, and a floating gap is provided between the inner side of the positioning groove and the outer side of the second protrusion, the second protrusion lifts the bracket to form a clearance space between the bracket and the conductive rubber.

[0014] By adopting the above technical solution, not only can the bracket be pre-positioned, which is beneficial to its installation operation, but also a space is reserved for the conductive rubber, and the structure is more reasonable and reliable.

[0015] The utility model is further configured as follows: a cylindrical guide hole is vertically arranged on the clamping protrusion, a floating rod is axially movably arranged in the cylindrical guide hole, and a preload spring for applying axial force to the floating rod is also arranged in the cylindrical guide hole; a limiting guide hole connected to the cylindrical guide hole is also provided on the side of the clamping protrusion, the limiting guide hole extends vertically, a slot is provided on the side of the floating rod, a guide block is inserted into the slot, and the outer end of the guide block passes through the limiting guide hole.

[0016] By adopting the above technical solution, the floating rod is pressed against the bracket by the preload spring, which can offset the influence of thermal expansion and contraction on the change of the matching clearance between the bracket and the shell bracket, thereby ensuring the stability of the bracket installation structure.

[0017] The utility model is further configured such that a spring sheet is arranged on the clamping protrusion inclined toward the direction of the bracket, the spring sheet and the clamping protrusion are an integrated structure, the end of the spring sheet is provided with a hemispherical abutting portion for abutting against the upper end of the bracket, and when the spring sheet is in a free state, the lower end of the hemispherical abutting portion is lower than the lower end of the cylindrical protrusion.

[0018] By adopting the above technical solution, this structure is a second way to replace the floating rod. It is more convenient to process while ensuring the stability of the bracket installation structure.

[0019] The utility model is further configured such that a first filling groove is provided at the upper end of the first protrusion, a supporting flange is provided at the outer periphery of the first protrusion, the upper end surface of the supporting flange is lower than the upper end surface of the first protrusion, and a second filling groove in a closed loop is provided at a position of the supporting flange corresponding to the outer side wall of the first protrusion, and a frosted layer is covered in the first filling groove, the upper end surface of the first protrusion and the second filling groove, and the surface of the frosted layer is the rough surface structure described above.

[0020] By adopting the above technical solution, which is the second implementation method of the rough surface structure, the frosted layer can be made by sandblasting process. Since the second filling groove is set, when processing the upper end surface of the first bump, the excess raw material will flow into the second filling groove and will not flow down from the side of the first bump, thereby ensuring the beauty of the first bump.

[0021] The utility model is further configured such that the shell includes a base and an upper cover, the base and the upper cover are detachably connected together by screws, a plurality of positioning protrusions are provided on the outer side of the base, and positioning grooves matched with the positioning protrusions are provided on the shell.

[0022] By adopting the above technical solution, it is not only easy to disassemble and assemble, but also has a stable and reliable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of the utility model as a whole;

[0024] Figure 2 A cross-sectional view of the utility model as a whole;

[0025] Figure 3 An exploded view of the utility model as a whole;

[0026] Figure 4 This is a schematic diagram of the internal structure of the upper cover of the utility model;

[0027] Figure 5 This is a cross-sectional view of the first implementation structure of the inner side of the upper cover of the utility model;

[0028] Figure 6 This is a cross-sectional view of the second embodiment of the structure of the inner side of the upper cover of the utility model;

[0029] Figure 7 This is a schematic diagram of the first implementation structure of the bracket of the utility model;

[0030] Figure 8 This is a partial schematic diagram of the second implementation structure of the bracket of the utility model;

[0031] In the figure: 1. shell; 2. PCB board; 3. conductive rubber; 4. bracket; 5. rocker; 6. slider; 7. pressure block; 8. first protrusion; 9. rough surface structure; 10. clamping protrusion; 11. cylindrical protrusion; 12. positioning protrusion; 13. positioning guide groove; 14. second protrusion; 15. positioning groove; 16. floating gap; 17. clearance space; 18. cylindrical guide hole; 19. floating rod; 20. preload spring; 21. limit guide hole; 22. slot; 23. guide block; 24. spring; 25. hemispherical abutment; 26. first filling groove; 27. support flange; 28. second filling groove; 29. ​​frosted layer; 42. base; 43. upper cover; 44. positioning protrusion; 45. positioning groove. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Example: As attached Figures 1 to 8 A seat switch structure for reducing abnormal operation noise is shown, comprising a housing 1, a PCB board 2 arranged in the housing 1, a conductive rubber 3 covered on the PCB board 2, a bracket 4 arranged above the conductive rubber 3, a swing rod 5 swingably arranged on the bracket 4, a slider 6 movably arranged on the housing 1 and linked with the swing rod 5, and a pressing block 7 arranged between the swing rod 5 and the conductive rubber 3, wherein a button is arranged at the outer end of the slider 6; the bottom end of the bracket 4 is tightly pressed against the conductive rubber 3, and the top end of the bracket 4 is provided with a plurality of first protrusions 8, the upper end surface of the first protrusion 8 is tightly fitted with the inner side of the housing 1, and the mating surface of the first protrusion 8 and the housing 1 is a rough surface structure 9. The mating surface of the bracket 4 and the housing 1 is processed into a rough surface structure 9, and the surface energy is reduced by reducing the contact area between the bracket 4 and the housing 1, and the friction abnormal noise is reduced, thereby improving the user experience.

[0034] The first implementation of the rough surface structure 9 is that the rough surface structure 9 on the first protrusion 8 is a gravel surface. The surface of the gravel surface structure has granular protrusions, which greatly reduces the contact area between the bracket 4 and the housing 1, thereby effectively reducing the surface energy.

[0035] As attached Figures 2 to 4 As shown, the inner side of the housing 1 is provided with a plurality of pressing protrusions 10, and the pressing protrusions 10 are provided with cylindrical protrusions 11 for pressing against the upper end surface of the first protrusion 8. This design can further reduce the contact area between the housing 1 and the bracket 4.

[0036] As attached Figure 4 and attached Figure 7 As shown, the bracket 4 is provided with a positioning protrusion 12 extending vertically at the position corresponding to the side of each first protrusion 8, and the inner side of the housing 1 is provided with a plurality of positioning guide grooves 13 extending vertically and respectively used to fit with the corresponding positioning protrusions 12. This design can not only achieve the positioning effect of the bracket 4, but also facilitate its installation operation.

[0037] As attached Figure 2 As shown, the bottom end of the bracket 4 is provided with a second protrusion 14 corresponding to the position below each first protrusion 8, and the cross section of the second protrusion 14 is in a cross shape. The conductive rubber 3 is provided with a positioning groove 15 for the second protrusion 14 to be embedded, and a floating gap 16 is provided between the inner side of the positioning groove 15 and the outer side of the second protrusion 14. The second protrusion 14 raises the bracket 4, so that a clearance space 17 is formed between the bracket 4 and the conductive rubber 3. This design can not only pre-position the bracket 4, which is beneficial to its installation operation, but also reserve a clearance space 17 for the conductive rubber 3, and the structure is more reasonable and reliable.

[0038] As attached Figure 5 As shown, the clamping protrusion 10 is also provided with a cylindrical guide hole 18 in the vertical direction, a floating rod 19 is movably provided in the cylindrical guide hole 18 in the axial direction, and a preload spring 20 for applying an axial force to the floating rod 19 is also provided in the cylindrical guide hole 18; the side of the clamping protrusion 10 is also provided with a limit guide hole 21 connected to the cylindrical guide hole 18, the limit guide hole 21 extends vertically, and the side of the floating rod 19 is provided with a slot 22, a guide block 23 is inserted in the slot 22, and the outer end of the guide block 23 passes through the limit guide hole 21. The floating rod 19 is pressed against the bracket 4 by the preload spring 20, which can offset the influence of thermal expansion and contraction on the change of the matching clearance between the bracket 4 and the housing 1 bracket 4, and ensure the stability of the mounting structure of the bracket 4.

[0039] As attached Figure 6As shown, in addition, the floating rod 19 and the preload spring 20 can be replaced by the following structure, that is, the pressing protrusion 10 is also provided with a spring sheet 24 inclined toward the bracket 4, the spring sheet 24 and the pressing protrusion 10 are an integrated structure, the end of the spring sheet 24 is provided with a hemispherical abutment portion 25 for abutting against the upper end of the bracket 4, and when the spring sheet 24 is in a free state, the lower end of the hemispherical abutment portion 25 is lower than the lower end of the cylindrical protrusion 11. It is more convenient to process while ensuring the stability of the mounting structure of the bracket 4.

[0040] As attached Figure 8 As shown, the second implementation of the rough surface structure 9 is as follows: a first filling groove 26 is provided at the upper end of the first protrusion 8, a supporting flange 27 is provided at the outer periphery of the first protrusion 8, the upper end surface of the supporting flange 27 is lower than the upper end surface of the first protrusion 8, and a second filling groove 28 in a closed loop is provided at the position of the supporting flange 27 corresponding to the outer side wall of the first protrusion 8, and a frosted layer 29 is covered in the first filling groove 26, the upper end surface of the first protrusion 8, and the second filling groove 28, and the surface of the frosted layer 29 is the rough surface structure 9. The frosted layer 29 can be made by sandblasting. Since the second filling groove 28 is provided, when processing the upper end surface of the first protrusion 8, the excess raw material will flow into the second filling groove 28, and will not flow down from the side of the first protrusion 8, thereby ensuring the aesthetics of the first protrusion 8.

[0041] As attached Figure 1 As shown, the housing 1 includes a base 42 and an upper cover 43, the base 42 and the upper cover 43 are detachably connected together by screws, and a plurality of positioning protrusions 44 are provided on the outer side of the base 42, and a positioning groove 45 adapted to the positioning protrusion 44 is provided on the housing 1. This design is not only convenient for disassembly and assembly, but also has a stable and reliable structure.

Claims

1. A seat switch structure for reducing abnormal operation noise, comprising a housing (1), a PCB board (2) arranged in the housing (1), a conductive rubber (3) covered on the PCB board (2), a bracket (4) arranged above the conductive rubber (3), a swing rod (5) swingably arranged on the bracket (4), a slider (6) movably arranged on the housing (1) and linked to the swing rod (5), and a pressing block (7) arranged between the swing rod (5) and the conductive rubber (3); characterized in that: The bottom end of the bracket (4) is tightly against the conductive rubber (3), and the top end of the bracket (4) is provided with a plurality of first protrusions (8), the upper end surfaces of the first protrusions (8) are tightly fitted with the inner side of the shell (1), and the mating surfaces of the first protrusions (8) and the shell (1) are rough surface structures (9).

2. A seat switch structure for reducing abnormal operation noise according to claim 1, characterized in that: The rough surface structure (9) on the first protrusion (8) is a gravel surface.

3. The seat switch structure for reducing abnormal operation noise according to claim 1, characterized in that: A plurality of groups of pressing protrusions (10) are provided on the inner side of the housing (1), and a columnar protrusion (11) is provided on the pressing protrusion (10) for pressing against the upper end surface of the first protrusion (8).

4. The seat switch structure for reducing abnormal operation noise according to claim 1, characterized in that: The bracket (4) is provided with a positioning protrusion (12) extending vertically at a position corresponding to the side of each first protrusion (8), and the inner side of the housing (1) is provided with a plurality of positioning guide grooves (13) extending vertically and used to fit with the corresponding positioning protrusions (12).

5. The seat switch structure for reducing abnormal operation noise according to claim 4, characterized in that: A second protrusion (14) is further provided at the bottom end of the bracket (4) at a position corresponding to the position below each first protrusion (8); the cross section of the second protrusion (14) is in a cross shape; a positioning groove (15) for the second protrusion (14) to be embedded is provided on the conductive rubber (3); and a floating gap (16) is provided between the inner side of the positioning groove (15) and the outer side of the second protrusion (14); the second protrusion (14) lifts the bracket (4) so ​​that a clearance space (17) is formed between the bracket (4) and the conductive rubber (3).

6. The seat switch structure for reducing abnormal operation noise according to claim 3, characterized in that: A cylindrical guide hole (18) is also vertically arranged on the clamping protrusion (10), a floating rod (19) is axially movably arranged in the cylindrical guide hole (18), and a preload spring (20) for applying an axial force to the floating rod (19) is also arranged in the cylindrical guide hole (18); a limiting guide hole (21) connected to the cylindrical guide hole (18) is also opened on the side of the clamping protrusion (10), and the limiting guide hole (21) extends vertically, and a slot (22) is opened on the side of the floating rod (19), and a guide block (23) is inserted into the slot (22), and the outer end of the guide block (23) passes through the limiting guide hole (21).

7. The seat switch structure for reducing abnormal operation noise according to claim 3, characterized in that: The clamping protrusion (10) is also provided with a spring sheet (24) inclined toward the bracket (4); the spring sheet (24) and the clamping protrusion (10) are an integrated structure; the end of the spring sheet (24) is provided with a hemispherical abutment portion (25) for abutting against the upper end of the bracket (4); and when the spring sheet (24) is in a free state, the lower end of the hemispherical abutment portion (25) is lower than the lower end of the cylindrical protrusion (11).

8. The seat switch structure for reducing abnormal operation noise according to claim 1, characterized in that: A first filling groove (26) is provided at the upper end of the first protrusion (8); a supporting flange (27) is provided on the outer periphery of the first protrusion (8); the upper end surface of the supporting flange (27) is lower than the upper end surface of the first protrusion (8); a second filling groove (28) in the form of a closed loop is provided at a position of the supporting flange (27) corresponding to the outer wall of the first protrusion (8); a frosted layer (29) is provided inside the first filling groove (26), the upper end surface of the first protrusion (8) and the inside of the second filling groove (28); and the surface of the frosted layer (29) is the rough surface structure (9).

9. The seat switch structure for reducing abnormal operation noise according to claim 1, characterized in that: The housing (1) comprises a base (42) and an upper cover (43), wherein the base (42) and the upper cover (43) are detachably connected together by screws, and a plurality of positioning protrusions (44) are provided on the outer side of the base (42), and positioning grooves (45) adapted to the positioning protrusions (44) are provided on the housing (1).

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