An antistatic combination of a wiper switch

Abstract

The present application relates to a kind of antistatic combination of handle switch, including main casing, main circuit board, handle, knob support, first knob assembly and second knob assembly, knob support is set in handle casing, first knob assembly includes first support, first circuit board and first knob, first support is fixedly set on the front end of knob support, the first circuit board is fixedly set on first support, first knob is rotationally set on knob support and first knob front end is formed with connecting column, blocking convex ring is formed on the circumferential surface of connecting column, connecting convex ring is formed on the inner wall of handle casing with connecting column matching, blocking ring groove is opened in the inner wall of connecting convex ring, connecting column passes through connecting convex ring, blocking convex ring is placed in blocking ring groove, connecting column is provided with movable contact piece matched with first circuit board.This antistatic combination of handle switch has better antistatic performance to ensure the stability during work, and further ensure the safety of driving.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to an anti-static combination column shifter switch. Background Technology

[0002] Combination switches are automotive parts used to control vehicle functions. The combination shifter switch, for example, switches vehicle functions by moving a handle, and integrates several knobs on the handle for controlling functions such as lights. Testing revealed that existing combination shifter switches malfunction during power-on testing (function returning to normal after power-on), posing a safety hazard. Inspection showed that the cause of the malfunction was static electricity inside the switch, causing significant power fluctuations at the discharge point, which could trigger the microcontroller and require power-on to recover. Therefore, there is an urgent need to improve the anti-static performance of combination shifter switches.

[0003] To address the aforementioned problems, this invention provides improvements. Summary of the Invention

[0004] This invention proposes an anti-static combination stop switch, which solves the above-mentioned problems existing in the use of the prior art.

[0005] The technical solution of this invention is implemented as follows: An antistatic combination stop switch includes a main housing, a main circuit board, a handle, a knob bracket, a first knob assembly, and a second knob assembly. The knob bracket is disposed inside the handle housing. The first knob assembly includes a first bracket, a first circuit board, and a first knob. The first bracket is fixedly disposed on the front end of the knob bracket, and the first circuit board is fixedly disposed on the first bracket. The first knob is rotatably disposed on the knob bracket, and a connecting post is formed at the front end of the first knob. A blocking protrusion is formed on the peripheral side of the connecting post. A connecting protrusion matching the connecting post is formed on the inner wall of the handle housing. A blocking ring groove is formed on the inner wall of the connecting protrusion. The connecting post passes through the connecting protrusion, and the blocking protrusion is placed in the blocking ring groove. A movable contact piece that mates with the first circuit board is disposed on the connecting post.

[0006] Preferably, a barrier flange is formed on the end face of the connecting post to surround the movable contact piece.

[0007] Preferably, the edge of the barrier flange protrudes beyond the edge of the connecting column to form a barrier step.

[0008] Preferably, the second knob assembly includes a second bracket, a second circuit board, and a second knob. The second bracket is disposed at the rear end of the knob bracket, the second circuit board is disposed on the second bracket, the second knob is rotatably disposed at the rear end of the knob bracket, and the front end of the second knob forms a mounting bracket that passes through the second bracket. The mounting bracket is provided with a magnet that cooperates with a Hall sensor on the second circuit board.

[0009] Preferably, the main housing includes a support housing made of metal and a wiring cover made of insulating material. An insulating support frame is provided inside the lower end of the support housing. The main circuit board is mounted on the support frame, and the wiring cover is located at the lower end of the main housing to cover the main circuit board.

[0010] Preferably, the knob bracket has a wiring cavity that runs through the knob bracket from front to back, and the wiring cover has a wiring opening at the side end near the handle. The wires of the first circuit board and the second circuit board pass through the wiring cavity, out of the handle, through the wiring opening, and into the bottom of the main circuit board to connect with the main circuit board.

[0011] Preferably, the main circuit board has at least one analog ground.

[0012] Preferably, the support housing is connected to the handle via a grounding wire.

[0013] Preferably, a first grounding bolt is screwed onto the support housing, a second grounding bolt is screwed onto the connecting rod of the handle, and the two ends of the grounding wire are respectively connected to the first grounding bolt and the second grounding bolt.

[0014] In summary, the beneficial effects of the present invention are as follows: 1. By preventing external static electricity from entering the handle through the gap between the first knob and the handle housing and being led to the mating point between the moving contact and the first circuit board, the anti-static performance of the combined shift switch is enhanced. 2. By preventing external static electricity from entering the handle through the gap between the second knob and the handle housing and being led to the mating point between the magnet and the second circuit board, the anti-static performance of the combined shift switch is enhanced. Third, avoid creating additional discharge points by optimizing the routing path of internal wires; Fourth, avoid creating additional discharge points by grounding the handle; The above methods enhance the anti-static performance of the combination column shifter switch, preventing large fluctuations in power supply during operation and ensuring the stability of the combination column shifter switch during operation, thereby ensuring driving safety. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an exploded view of the present invention; Figure 2 This is a cross-sectional schematic diagram of the handle in this invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 2 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of the structure of the first knob assembly in this invention; Figure 6 This is a schematic diagram of the structure of the second knob assembly in this invention; Figure 7 This is a schematic diagram of the wiring connecting the first and second circuit boards to the main circuit board in this invention. Figure 8 This is a schematic diagram of the main handle, support housing, and grounding wire of this utility model.

[0017] In the diagram: 1. Main housing; 11. Support housing; 12. Wiring cover; 121. Wiring port; 13. Support frame; 2. Main circuit board; 3. Handle; 31. Knob bracket; 311. Wiring cavity; 32. Connecting protrusion; 33. Barrier ring groove; 34. Connecting rod; 4. First knob assembly; 41. First bracket; 42. First circuit board; 43. First knob; 431. Connecting post; 432. Barrier protrusion; 433. Barrier flange; 434. Barrier step; 44. Moving contact piece; 5. Second knob assembly; 51. Second bracket; 52. Second circuit board; 53. Second knob; 531. Mounting bracket; 54. Magnet; 6. Grounding wire; 7. First grounding bolt; 8. Second grounding bolt. Detailed Implementation

[0018] The following will refer to the appendices in the embodiments of the present invention. Figure 1-8 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] The following are some of the reasons why the combined shift switch power supply fluctuates and thus fails to function: 1. External static electricity enters the handle 3 through the gap between the first knob 43 and the housing of the handle 3, causing interference when the first knob assembly 4 is turned on for discharge; Second, external static electricity enters the handle 3 through the gap between the second knob 53 and the housing of the handle 3, causing interference when the second knob assembly 5 is turned on to discharge. 3. The wires connecting the main circuit board 2 to the first knob assembly 4 and the second knob assembly 5 inside the combination switch, near the metal parts and connecting screws inside the main housing 1, form a discharge point inside the main housing 1. IV. The connecting screws of the handle 3 housing form a discharge point.

[0020] Regarding the first reason mentioned above, as shown in the figure, an anti-static combination stop switch includes a main housing 1, a main circuit board 2, a handle 3, a knob bracket 31, a first knob assembly 4, and a second knob assembly 5. The knob bracket 31 is disposed inside the housing of the handle 3. The first knob assembly 4 includes a first bracket 41, a first circuit board 42, and a first knob 43. The first bracket 41 is fixedly disposed on the front end of the knob bracket 31, and the first circuit board 42 is fixedly disposed on the first bracket 41. The first knob 43... 3. A connecting post 431 is formed at the front end of the first knob 43, which is rotatably mounted on the knob bracket 31. A blocking protrusion 432 is formed on the peripheral side of the connecting post 431. A connecting protrusion 32 matching the connecting post 431 is formed on the inner wall of the handle 3 housing. A blocking ring groove 33 is opened on the inner wall of the connecting protrusion 32. The connecting post 431 passes through the connecting protrusion 32. The blocking protrusion 432 is placed in the blocking ring groove 33. A moving contact piece 44 that cooperates with the first circuit board 42 is provided on the connecting post 431.

[0021] In the above structure, such as Figure 3 The path shown in Figure a is the path that external static electricity must take to enter the interior of the handle 3 through the gap between the first knob 43 and the housing of the handle 3. Through the cooperation of the blocking protrusion 432 and the blocking groove, the path of external static electricity entering the interior of the handle 3 is bent, preventing external static electricity from entering the interior of the handle 3 and being led to the mating point between the moving contact 44 and the first circuit board 42. This enhances the anti-static performance of the combined column shift switch and prevents static electricity from causing interference when the moving contact 44 and the first circuit board 42 are connected and discharged, thus ensuring the stability of the combined column shift switch during operation and ensuring driving safety.

[0022] In addition, based on the above structure, a blocking flange 433 is formed on the end face of the connecting post 431, surrounding the moving contact piece 44. The blocking flange 433 is located outside the moving contact piece 44 to prevent the moving contact piece 44 from introducing static electricity, which further enhances the anti-static performance of the combined shift switch.

[0023] Furthermore, based on the above structure, the edge of the blocking flange 433 protrudes beyond the edge of the connecting post 431 to form a blocking step 434. The blocking step 434 makes the path of external static electricity entering the mating point between the moving contact 44 and the first circuit board 42 more curved, thus blocking static electricity and further enhancing the anti-static performance of the combined latch switch.

[0024] Regarding the second reason mentioned above, the second knob assembly 5 includes a second bracket 51, a second circuit board 52, and a second knob 53. The second bracket 51 is disposed at the rear end of the knob bracket 31, the second circuit board 52 is disposed on the second bracket 51, and the second knob 53 is rotatably disposed at the rear end of the knob bracket 31, with a mounting bracket 531 formed at the front end of the second knob 53 that passes through the second bracket 51. A magnet 54 that cooperates with the Hall sensor on the second circuit board 52 is disposed on the mounting bracket 531.

[0025] In the above structure, the path shown in Figure b is the path that external static electricity must take to enter the handle 3 through the gap between the second knob 53 and the housing of the handle 3. By placing the magnet 54 and the Hall sensor on the second circuit board 52 inside the knob bracket 31, the path for external static electricity to enter the handle 3 is bent, preventing external static electricity from entering the handle 3 and being led to the Hall sensor of the magnet 54 and the second circuit board 52. This enhances the anti-static performance of the combined column shifter switch and prevents static electricity from interfering with the Hall sensor of the circuit board when the magnet and the Hall sensor of the circuit board are in contact, thus ensuring the stability of the combined column shifter switch during operation and ensuring driving safety.

[0026] Regarding the third reason mentioned above, the main housing 1 includes a support housing 11 made of metal and a wiring cover 12 made of insulating material. An insulating support frame 13 is provided inside the lower end of the support housing 11. The main circuit board 2 is mounted on the support frame 13, and the wiring cover 12 is located at the lower end of the main housing 1 to cover the main circuit board 2.

[0027] The knob bracket 31 has a wiring cavity 311 that runs through the knob bracket 31 from front to back. The wiring cover plate 12 has a wiring port 121 at the side end near the handle 3. The wires of the first circuit board 42 and the second circuit board 52 pass through the wiring cavity 311, then out of the handle 3, and then through the wiring port 121 to enter the bottom of the main circuit board 2 and connect with the main circuit board 2.

[0028] In the above structure, the metal housing 11 enhances the stability of the combined latch switch after installation. The support frame 13 is located above the main circuit board 2, creating a certain distance between the main circuit board 2 and the support housing 11. Figure 7The path shown in C is the wiring path connecting the wires of the first circuit board 42 and the second circuit board 52 to the main circuit board 2. The wires of the first circuit board 42 and the second circuit board 52 first pass into the wiring cavity 311, pass out from the port of the wiring cavity 311, pass out of the housing of the handle 3, and then pass through the wiring port 121 to the wiring cover plate 12 between the main circuit board 2 and the main circuit board 2. This ensures that the wires of the first circuit board 42 and the second circuit board 52 are kept away from the supporting housing 11, the connecting screws of the main housing 1, the connecting screws of the handle 3 housing, and other metal parts, so as to avoid the formation of additional discharge points and the resulting power fluctuations. This ensures the stability of the combined shift switch during operation and guarantees the safety of driving.

[0029] In addition, based on the above structure, the main circuit board 2 is provided with at least one simulated ground to absorb static electricity drawn to the main circuit board 2, thereby enhancing the anti-static performance of the combined stop switch.

[0030] Regarding the fourth reason mentioned above, the support housing 11 and the handle 3 are connected by a grounding wire 6. Specifically, a first grounding bolt 7 is screwed onto the support housing 11, and a second grounding bolt 8 is screwed onto the connecting rod 34 of the handle 3. The two ends of the grounding wire 6 are respectively connected to the first grounding bolt 7 and the second grounding bolt 8.

[0031] In the above structure, the handle 3 is grounded by connecting the grounding wire 6, which avoids the connection screw of the handle 3 housing from forming an additional discharge point and causing power fluctuations, thus ensuring the stability of the combined shift switch and ensuring driving safety. The grounding wire 6 is connected to the support housing 11 and the handle 3 through the first grounding bolt 7 and the second grounding bolt 8, which facilitates the setting of the grounding wire 6.

[0032] In summary, this combination column shifter switch enhances its anti-static performance by preventing external static electricity from entering the handle 3 and by optimizing the internal wiring and grounding the handle 3 to avoid creating additional discharge points. The first knob 43 drives the moving contact 44 to cooperate with the first circuit board 42 to achieve the control function of the first knob assembly 4, and the second knob 53 drives the magnet 54 to cooperate with the second circuit board 52 to achieve the control function of the second knob assembly 5. When the handle 3 is turned in conjunction with the main circuit board 2 to achieve the control function, static electricity and the generation of additional discharge points that could cause power fluctuations are avoided, thus preventing the microcontroller of the main circuit board 2 from failing due to power fluctuations. This ensures the stability of the combination column shifter switch during operation and guarantees driving safety.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An antistatic combination stop switch, comprising a main housing (1), a main circuit board (2), a handle (3), a knob bracket (31), a first knob assembly (4), and a second knob assembly (5), wherein the knob bracket (31) is disposed within the housing of the handle (3), characterized in that: The first knob assembly (4) includes a first bracket (41), a first circuit board (42), and a first knob (43). The first bracket (41) is fixedly mounted on the front end of the knob bracket (31), and the first circuit board (42) is fixedly mounted on the first bracket (41). The first knob (43) is rotatably mounted on the knob bracket (31), and a connecting post (431) is formed at the front end of the first knob (43). A blocking protrusion (432) is formed on the peripheral side of the connecting post (431). A connecting protrusion (32) matching the connecting post (431) is formed on the inner wall of the handle (3) housing. A blocking ring groove (33) is provided on the inner wall of the connecting protrusion (32). The connecting post (431) passes through the connecting protrusion (32), and the blocking protrusion (432) is placed in the blocking ring groove (33). A connecting post (431) is provided with The first circuit board (42) has a movable contact piece (44) that cooperates with it. A barrier flange (433) is formed around the movable contact piece (44) on the end face of the connecting post (431). The edge of the barrier flange (433) protrudes from the edge of the connecting post (431) to form a barrier step (434). The second knob assembly (5) includes a second bracket (51), a second circuit board (52), and a second knob (53). The second bracket (51) is located at the rear end of the knob bracket (31). The second circuit board (52) is located on the second bracket (51). The second knob (53) is rotatably located at the rear end of the knob bracket (31), and the front end of the second knob (53) has a mounting bracket (531) that passes through the second bracket (51). A magnet (54) that cooperates with the Hall sensor on the second circuit board (52) is provided on the mounting bracket (531).

2. The antistatic combination stop switch according to claim 1, characterized in that: The main housing (1) includes a support housing (11) made of metal and a wiring cover (12) made of insulating material. An insulating support frame (13) is provided inside the lower end of the support housing (11). The main circuit board (2) is mounted on the support frame (13). The wiring cover (12) is located at the lower end of the main housing (1) and covers the main circuit board (2).

3. The antistatic combination stop switch according to claim 2, characterized in that: The knob bracket (31) has a wiring cavity (311) that runs through the knob bracket (31) from front to back. The wiring cover (12) has a wiring port (121) on the side near the handle (3). The wires of the first circuit board (42) and the second circuit board (52) pass through the wiring cavity (311), then out of the handle (3), then through the wiring port (121), and then into the bottom of the main circuit board (2) to connect with the main circuit board (2).

4. The antistatic combination stop switch according to claim 3, characterized in that: At least one analog ground is provided on the main circuit board (2).

5. The antistatic combination stop switch according to claim 2, characterized in that: The support housing (11) is connected to the handle (3) via a grounding wire (6).

6. The antistatic combination stop switch according to claim 5, characterized in that: The first grounding bolt (7) is screwed onto the support housing (11), and the second grounding bolt (8) is screwed onto the connecting rod (34) of the handle (3). The two ends of the grounding wire (6) are respectively connected to the first grounding bolt (7) and the second grounding bolt (8).

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