A steering wheel switch roller pressing structure

Abstract

The patent discloses a steering wheel switch roller pressing structure which comprises a PCB board and a shell, the top of the PCB board is provided with a micro switch and a photoelectric switch, the top of the PCB board is fixedly provided with a fixed shell, the inner side wall of the fixed shell is provided with wheel grooves on four sides, the bottom of the shell is fixedly provided with spring rods on left and right sides, the bottom end of the spring rod is fixedly installed on the top of the PCB board, the outer side wall of the shell is fixedly provided with wheel seats on four sides, and the wheel seat is connected with a supporting wheel, the outer side wall of the shell is provided with the supporting wheel through the wheel seat on four sides, the top of the PCB board is provided with the fixed shell, the inner side wall of the fixed shell is provided with the wheel grooves on four sides, the wheel body edge of the supporting wheel is rollingly installed in the wheel groove, the rolling direction of the supporting wheel in the wheel groove is same with the extension direction (axial direction) of the spring rod, different direction pressing forces from the pressing wheel are shared, so the compression strength of the spring rod can be increased, and the service life of the component is improved.

Description

Technical Field

[0001] This patent relates to the field of steering wheel switch technology, specifically a steering wheel switch roller pressing structure. Background Technology

[0002] With the rapid advancement of modern technology, especially automotive technology, cars are no longer just a means of transportation but are increasingly evolving into entertainment devices. However, while enhancing entertainment, we cannot neglect safety, hence the emergence of multi-function steering wheel switches. As a crucial human-machine interface, the steering wheel integrates functions such as horn control, entertainment system volume adjustment and mode switching, as well as on-board computer control, cruise control, and gear shifting. To meet evolving needs, for example, to make operating the entertainment system's volume control or up / down selection functions more convenient and fluid, a special structure with an infinite scroll wheel has been added to the steering wheel. Rotating this wheel allows for the control of the corresponding entertainment system functions, making operation convenient.

[0003] The bottom of the existing press wheel outer shell is connected to the PCB board via a spring rod. However, since the press wheel protrudes a large area from the steering wheel switch, the force generated when a person presses the press wheel with their finger is not entirely vertical downward. This will cause a large radial force inside the spring rod, which can easily damage the spring rod. Therefore, we propose a steering wheel switch roller pressing structure. Utility Model Content

[0004] The purpose of this patent is to provide a steering wheel switch roller pressing structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this patent provides the following technical solution: a steering wheel switch roller pressing structure, comprising a PCB board and a housing, wherein a micro switch and a photoelectric switch are mounted on the top of the PCB board, a fixed housing is fixedly mounted on the top of the PCB board, and wheel grooves are provided on all four sides of the inner sidewall of the fixed housing. Spring rods are fixedly mounted on the left and right sides of the bottom of the housing, and the bottom ends of the spring rods are fixedly mounted on the top of the PCB board. Wheel seats are fixedly mounted on all four sides of the outer sidewall of the housing, and a support wheel is connected inside the wheel seat. The edge of the support wheel is tumblingly mounted in the wheel groove.

[0006] The housing is equipped with a pressing wheel, and a rotating shaft is fixedly connected to the middle of the pressing wheel. The rotating shaft is rotatably connected to the housing through a bearing. A trigger gear is fixedly installed at the right end of the rotating shaft through the housing and the fixed shell. The bottom end of the trigger gear is located inside the photoelectric switch.

[0007] A fixing ring is embedded in the right side wall of the fixed shell. The inner side wall of the fixing ring is provided with eight slots evenly distributed in a circle. A locking block is fixedly installed on the top side wall of the rotating shaft, and the locking block is engaged in the slot at the top.

[0008] Preferably, the outer side wall of the pressing wheel is provided with anti-slip texture.

[0009] Preferably, the wheel seat includes a U-shaped seat, a bolt, and a nut. The U-shaped seat has square holes on both sides. The bolt includes an end plate. A square rod is integrally formed on the right side of the end plate. The side wall of the square rod is in contact with and fits against the square hole on the left side. A threaded rod is integrally formed on the right end of the square rod. The right end of the threaded rod passes through the square hole on the right side and is screwed to the nut.

[0010] Preferably, the spring rod includes a first column and a second column. The first column has a sliding cavity inside. A spring is fixedly installed on the bottom wall of the sliding cavity. A sliding plate is fixedly installed on the top of the spring. The top of the sliding plate is fixed to the bottom of the second column. The outer edge of the top of the sliding plate is in contact with the top wall of the sliding cavity.

[0011] Preferably, the first column includes a column and a ring, with the bottom of the ring fixed to the top of the column.

[0012] Preferably, the top of the column is provided with first mounting holes on both the left and right sides, and the top of the ring is provided with second mounting holes on both the left and right sides. A threaded post is provided in the first mounting hole, the bottom end of the threaded post is fixedly installed on the top of the PCB board, and the top end of the threaded post is screwed with an internal threaded ring through the first mounting hole and the second mounting hole in sequence.

[0013] Compared with the prior art, the beneficial effects of this patent are as follows: This patent has support wheels installed on all four sides of the outer side wall of the housing via wheel seats, a fixed shell installed on the top of the PCB board, and wheel grooves provided on all four sides of the inner side wall of the fixed shell. The support wheels are rolled in the wheel grooves at the wheel edges. The rolling direction of the support wheels in the wheel grooves is the same as the extension and retraction direction (axial direction) of the spring rod, thus sharing the pressing pressure from different directions of the pressing wheel. Therefore, the compressive strength of the spring rod can be increased and the service life of the component can be improved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall patent.

[0015] Figure 2 This is a schematic diagram of the wheel seat of this patent.

[0016] Figure 3 This is a schematic diagram of the spring rod in this patent.

[0017] Figure 4This is a three-dimensional view of the first column of this patent.

[0018] Figure 5 This is a schematic diagram of the trigger gear in this patent.

[0019] Figure 6 This is a cross-sectional view of the rotating shaft and fixing ring of this patent.

[0020] In the diagram: 1. PCB board, 2. Micro switch, 3. Photoelectric switch, 4. Fixed shell, 5. Wheel groove, 6. Housing, 7. Spring rod, 8. Wheel seat, 9. Support wheel, 10. Pressing wheel, 11. Rotating shaft, 12. Trigger gear, 13. U-shaped seat, 14. Square hole, 15. End plate, 16. Square rod, 17. Threaded rod, 18. Nut, 19. First column, 20. Sliding cavity, 21. Spring, 22. Slide plate, 23. Second column, 24. Column, 25. Ring, 26. First mounting hole, 27. Threaded column, 28. Second mounting hole, 29. Internal threaded ring, 30. Fixing ring. Detailed Implementation

[0021] The technical solutions of this patent embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this patent, and not all of them. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 Figure 5 and Figure 6 This patent provides a technical solution: a steering wheel switch roller pressing structure, including a PCB board 1 and a housing 6. A micro switch 2 and a photoelectric switch 3 are installed on the top of the PCB board 1. A fixed housing 4 is fixedly installed on the top of the PCB board 1. Wheel grooves 5 are provided on all four sides of the inner side wall of the fixed housing 4. Spring rods 7 are fixedly installed on the left and right sides of the bottom of the housing 6. The bottom end of the spring rods 7 is fixedly installed on the top of the PCB board 1. Wheel seats 8 are fixedly installed on all four sides of the outer side wall of the housing 6. A support wheel 9 is connected inside the wheel seat 8. The edge of the support wheel 9 is rolled in the wheel groove 5.

[0023] like Figure 1 As shown, the rolling direction of the support wheel 9 in the wheel groove 5 is vertically downward, which is the same as the extension and retraction direction of the spring rod 7.

[0024] The housing 6 is equipped with a pressing wheel 10. A rotating shaft 11 is fixedly connected to the middle of the pressing wheel 10. The rotating shaft 11 is rotatably connected to the housing 6 through a bearing. A trigger gear 12 is fixedly installed at the right end of the rotating shaft 11 through the housing 6 and the fixed shell 4. The bottom end of the trigger gear 12 is located inside the photoelectric switch 3.

[0025] A fixing ring 30 is embedded in the right side wall of the fixing shell 4. The inner side wall of the fixing ring 30 is provided with eight slots evenly distributed in a circle. A locking block is fixedly installed on the top of the side wall of the rotating shaft 11, and the locking block is engaged in the slot at the top.

[0026] like Figure 5 The trigger gear 12 shown has four evenly distributed teeth on its wheel edge. The bottom teeth block the light emitted and received by the photoelectric switch 3. When the pressing wheel 10 is rotated forty-five degrees, the bottom teeth of the trigger gear 12 no longer block the light received by the photoelectric switch 3, and the photoelectric switch 3 is triggered and turned on. At this time, the locking block is engaged in the corresponding slot at the forty-five-degree position. The driver is alerted by hand touch. When the pressing wheel 10 is rotated forty-five degrees again, the other teeth of the trigger gear 12 block the light received by the photoelectric switch 3, and the photoelectric switch is turned off. The locking block is engaged in the corresponding slot at the forty-five-degree position.

[0027] Specifically, the outer wall of the pressing roller 10 is provided with anti-slip texture.

[0028] Specifically, the wheel seat 8 includes a U-shaped seat 13, a bolt, and a nut 18. The U-shaped seat 13 has square holes 14 on both sides. The bolt includes an end plate 15. A square rod 16 is integrally formed on the right side of the end plate 15. The side wall of the square rod 16 is in contact with and fits against the square hole 14 on the left side. A threaded rod 17 is integrally formed on the right end of the square rod 16. The right end of the threaded rod 17 passes through the square hole 14 on the right side and is screwed to the nut 18.

[0029] Traditional wheel seats consist of a U-shaped seat and a bolt. The center hole of the wheel is fitted onto the bolt. As the wheel rotates, friction easily causes the bolt and the nut connected to it to rotate, which can easily cause the nut to loosen over time.

[0030] By inserting the square rod 16 into the square hole 14, the rotation of the bolt and nut 18 can be directly prevented, thus preventing the nut 18 from loosening.

[0031] Specifically, the spring rod 7 includes a first column 19 and a second column 23. The first column 19 has a sliding cavity 20 inside. A spring 21 is fixedly installed on the bottom wall of the sliding cavity 20. A sliding plate 22 is fixedly installed on the top of the spring 21. The top of the sliding plate 22 is fixed to the bottom of the second column 23. The outer edge of the top of the sliding plate 22 is in contact with the top wall of the sliding cavity 20.

[0032] Figure 3The spring 21 shown is in a compressed state.

[0033] Specifically, the first column 19 includes a column 24 and a ring 25, with the bottom of the ring 25 fixed to the top of the column 24.

[0034] By dividing the first column 19 into a column 24 and a ring 25, it is easier to open the internal sliding cavity 20 in the early stage, and it is also easier to install the spring 21 and the slide plate 22 in the sliding cavity 20.

[0035] Specifically, the top of the column 24 is provided with first mounting holes 26 on both the left and right sides, and the top of the ring 25 is provided with second mounting holes 28 on both the left and right sides. The first mounting hole 26 is provided with a threaded post 27. The bottom end of the threaded post 27 is fixedly installed on the top of the PCB board 1. The top end of the threaded post 27 passes through the first mounting hole 26 and the second mounting hole 28 in sequence and is screwed with an internal threaded ring 29.

[0036] The design of the threaded column 27 and other structures facilitates the simultaneous assembly of PCB board 1, column 24 and ring 25.

[0037] Working principle: When the pressing wheel 10 is pressed down, the support wheel 9 on the outside of the housing 6 can roll down in the wheel groove 5. At the same time, the second column 23 and the slide plate 22 move down. The rolling direction of the support wheel 9 in the wheel groove 5 is the same as the extension direction (axial direction) of the spring rod 7, which shares the pressing force from different directions of the pressing wheel 10. Therefore, the compressive strength of the spring rod 7 can be increased and the service life of the component can be improved. The downward movement of the housing 6 triggers the micro switch 2. When the pressing wheel 10 is rotated, the tooth blades on the edge of the trigger gear 12 rotate and are captured by the photoelectric switch 3 to achieve triggering.

[0038] It should be noted that the device structure and accompanying drawings of this patent mainly describe the principle of this patent. In terms of the technical aspects of this design principle, the setting of the device's power mechanism, power supply system and control system is not fully described. However, those skilled in the art who understand the principle of the above patent can clearly understand the specifics of its power mechanism, power supply system and control system.

[0039] In the description of this patent, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," and "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. At the same time, unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "fixed installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two elements or the interaction relationship between two elements. Unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0040] Although embodiments of this patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this patent, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steering wheel switch roller pressing structure, characterized in that: The device includes a PCB board (1) and a housing (6). A micro switch (2) and a photoelectric switch (3) are installed on the top of the PCB board (1). A fixed shell (4) is fixedly installed on the top of the PCB board (1). Wheel grooves (5) are provided on all four sides of the inner sidewall of the fixed shell (4). Spring rods (7) are fixedly installed on the left and right sides of the bottom of the housing (6). The bottom end of the spring rods (7) is fixedly installed on the top of the PCB board (1). Wheel seats (8) are fixedly installed on all four sides of the outer sidewall of the housing (6). A support wheel (9) is connected inside the wheel seat (8). The edge of the support wheel (9) is rolled in the wheel groove (5). The housing (6) is provided with a pressing wheel (10), and a rotating shaft (11) is fixedly connected to the middle of the pressing wheel (10). The rotating shaft (11) is rotatably connected to the housing (6) through a bearing. A trigger gear (12) is fixedly installed at the right end of the rotating shaft (11) through the housing (6) and the fixed shell (4). The bottom end of the trigger gear (12) is located inside the photoelectric switch (3). The right side wall of the fixed shell (4) is fitted with a fixing ring (30), and the inner side wall of the fixing ring (30) is provided with eight slots evenly distributed in a circle. A locking block is fixedly installed on the top side wall of the rotating shaft (11), and the locking block is engaged in the slot at the top.

2. The steering wheel switch roller pressing structure according to claim 1, characterized in that: The outer wall of the pressing wheel (10) is provided with anti-slip texture.

3. The steering wheel switch roller pressing structure according to claim 1, characterized in that: The wheel seat (8) includes a U-shaped seat (13), a bolt, and a nut (18). The U-shaped seat (13) has square holes (14) on both sides. The bolt includes an end plate (15). A square rod (16) is integrally formed on the right side of the end plate (15). The side wall of the square rod (16) is in contact with the square hole (14) on the left side. A threaded rod (17) is integrally formed on the right end of the square rod (16). The right end of the threaded rod (17) passes through the square hole (14) on the right side and is screwed to the nut (18).

4. The steering wheel switch roller pressing structure according to claim 1, characterized in that: The spring rod (7) includes a first column (19) and a second column (23). The first column (19) has a sliding cavity (20) inside. A spring (21) is fixedly installed on the bottom wall of the sliding cavity (20). A sliding plate (22) is fixedly installed on the top of the spring (21). The top of the sliding plate (22) is fixed to the bottom of the second column (23). The outer edge of the top of the sliding plate (22) is in contact with the top wall of the sliding cavity (20).

5. The steering wheel switch roller pressing structure according to claim 4, characterized in that: The first column (19) includes a column (24) and a ring (25), the bottom of which is fixed to the top of the column (24).

6. The steering wheel switch roller pressing structure according to claim 5, characterized in that: The top of the column (24) is provided with first mounting holes (26) on both the left and right sides, and the top of the ring (25) is provided with second mounting holes (28) on both the left and right sides. The first mounting hole (26) is provided with a threaded post (27). The bottom end of the threaded post (27) is fixedly installed on the top of the PCB board (1). The top end of the threaded post (27) passes through the first mounting hole (26) and the second mounting hole (28) in sequence and is screwed with an internal threaded ring (29).

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