Control structure of steering return pin in automobile steering switch

Abstract

The invention discloses a control structure of a steering return pin in a steering switch for an automobile, wherein a housing is provided with a long slot in the center, a sliding slot is provided on the side wall of the long slot, a positioning column is provided on the rear wall, protrusions are provided on both sides of a push block, a hook is provided above the protrusion, a countersunk hole is provided on the rear end face of the push block, a positioning column is provided in the center of the countersunk hole, an arc-shaped pressing surface is provided on the front end face of the push block, the push block is located in the long slot of the housing and the sliding slot is clamped by the protrusion and the hook, two ends of a spring are nested in two positioning columns, the return pin is a step plate and a protrusion is provided in the center of the top face, a gap is formed between the two sides of the protrusion and the top face of the step plate, the return pin is located in the long slot of the housing, the sliding slots on the two side walls of the long slot are embedded in the gap between the two sides of the protrusion and the top face of the step plate, the front end of the return pin extends out of the opening of the front end face of the housing, and the arc-shaped pressing surface of the front end face of the push block presses against the end face of the protrusion. The structure solves the problem of collision and abnormal noise of the return pin, ensures the balance of the return pin state and the automatic return of the steering switch, and improves the application reliability of the steering switch.

Description

Technical Field

[0001] The invention relates to a control structure of a steering return pin in an automobile steering switch. Background Art

[0002] The car steering switch is a switch that turns the vehicle's turn signal lights on or off. Before the vehicle turns, the driver operates the steering switch trigger to turn on the steering switch, and the vehicle's turn signal lights work to send out a turn signal. After the turn is completed, the driver turns the steering wheel, and the steering switch is automatically turned off by driving the automatic reset mechanism, and the turn signal lights stop working. This mechanism is mainly used to improve the driver's operating comfort.

[0003] The return structure of the traditional steering switch makes the return pin unbalanced up and down under the action of spring force, causing abnormal noise when it moves, and the front end of the return pin is in a lowered state when it is extended, so that the steering switch cannot automatically return to the left or right steering position.

[0004] like Figure 1 , Figure 2 and Figure 3 As shown, the return structure of the conventional steering switch is mainly composed of a handle component 1, a housing 2, a spring 3, a push block 4, a return pin 5 and a shift block 6. The shift block 6 is installed on the handle component 1, and the spring 3, the push block 4 and the return pin 5 are assembled in the housing 2 in sequence. One end of the spring 3 is pressed against the end surface of the housing 2, and the other end is pressed against the bottom surface of the circular hole through the circular hole on the rear end surface of the push block 4. The hooks on both sides of the push block 4 are hung on the plane of the housing 2. The front end surface of the push block 4 pushes the return pin 5 and is installed in the housing 2 together. When the housing 2 is installed in the handle component, the return pin 5 is limited by the V-shaped structure of the shift block 6. Under the action force F of the spring 3, the front end of the return pin 5 is in a state of lowering its head and tilting its rear end, losing balance. When the handle is pulled for left / right steering, the return pin 5 extends forward along the opening 21 at the front end of the housing 2 under the action force of the spring 3, and jumps in the height direction during the extension process to produce a collision abnormal sound. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a control structure for a steering return pin in an automobile steering switch. The control structure overcomes the defects of the traditional steering switch return structure, solves the problem of collision and abnormal noise caused by the bouncing of the return pin during movement, ensures the state balance of the return pin and the automatic return of the steering switch, and improves the reliability of the steering switch application.

[0006] In order to solve the above technical problems, the control structure of the steering return pin in the automobile steering switch of the present invention comprises a shell, a spring, a push block and a return pin, the shell is provided with a long slot in the center, the two side walls of the long slot are provided with slide slots, the rear wall is provided with a first positioning column, the front end surface of the shell is provided with an opening, two protrusions are provided at intervals on both sides of the push block, a hook is provided above the two protrusions, a countersunk hole is provided on the rear end surface of the push block, a second positioning column is provided in the center of the countersunk hole, an arc-shaped pressing surface is provided on the front end surface of the push block, the push block is located in the long slot of the shell, and the two protrusions on both sides of the push block and the hook clamp the two side walls of the long slot The slide groove allows the push block to slide along the slide groove, one end of the spring is nested in the first positioning column, the other end is located in the countersunk hole on the rear end face of the push block and is nested in the second positioning column, the return pin is a step plate and has a protrusion in the center of the top surface, and there is a gap between the two sides of the protrusion and the top surface of the step plate that matches the thickness of the slide groove on the two side walls of the long groove, the return pin is located in the long groove of the shell, and the slide grooves on the two side walls of the long groove are embedded in the gap between the two sides of the protrusion and the top surface of the step plate, the front end of the return pin extends out of the opening on the front end face of the shell, and the arc-shaped pressure surface on the front end face of the push block presses against the end face of the protrusion.

[0007] Furthermore, the sliding grooves on the two side walls of the long groove of the shell and the gaps between the protrusions and the hooks on both sides of the push block form a clearance fit.

[0008] Furthermore, the gaps between the two sides of the protrusion of the return pin and the top surface of the step plate form a clearance fit with the sliding grooves on the two side walls of the long groove of the shell.

[0009] Furthermore, the step plate includes a top plate and a bottom plate which are arranged in parallel and connected at adjacent ends, the protrusion is provided on the surface of the top plate at the connecting end of the top plate and the bottom plate and the end face of the protrusion is an arc-shaped end face, the push block is located on the surface of the bottom plate and the arc-shaped pressure surface of the front end face of the push block presses against the arc-shaped end face of the protrusion.

[0010] Furthermore, the two side walls of the push block are provided with convex ribs above the two protrusions, the convex ribs abut against the vertical surface of the slide groove, and the gap therebetween is 0.025-0.05mm, and the height difference between the convex rib and the top surface of the slide groove is at least 0.2mm.

[0011] Since the control structure of the steering return pin in the automobile steering switch of the present invention adopts the above-mentioned technical scheme, that is, the structure includes a shell, a spring, a push block and a return pin, the shell is provided with a long groove in the center, the side walls of the long groove are provided with a sliding groove, the rear wall is provided with a first positioning column, two protrusions are provided on both sides of the push block, a hook is provided above the two protrusions, a countersunk hole is provided on the rear end face of the push block, a second positioning column is provided in the center of the countersunk hole, an arc pressure surface is provided on the front end face of the push block, the push block is located in the long groove of the shell and clamps the sliding groove through the protrusion and the hook, one end of the spring is nested in the first and second positioning columns, the return pin is a step plate and a protrusion is provided in the center of the top surface, a gap is formed between the two sides of the protrusion and the top surface of the step plate, the return pin is located in the long groove of the shell, the sliding grooves on the two side walls of the long groove are embedded in the gap between the two sides of the protrusion and the top surface of the step plate, the front end of the return pin extends out of the opening of the front end face of the shell, and the arc pressure surface of the front end face of the push block presses the end face of the protrusion. This control structure overcomes the defects of the traditional steering switch return structure, solves the problem of collision and abnormal noise caused by the jumping of the return pin during movement, ensures the state balance of the return pin and the automatic return of the steering switch, and improves the reliability of the steering switch application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0013] Figure 1 This is a schematic diagram of the return structure of a traditional steering switch;

[0014] Figure 2 It is a schematic diagram of the assembly of the return pin in the traditional steering switch return structure;

[0015] Figure 3 It is a schematic diagram of the state of the return pin in the traditional steering switch return structure;

[0016] Figure 4 It is a schematic diagram of the control structure of the steering return pin in the automobile steering switch of the present invention;

[0017] Figure 5 It is a schematic diagram of the shell in this structure;

[0018] Figure 6 This is a schematic diagram of the rear end face of the push block in this structure;

[0019] Figure 7 This is a schematic diagram of the front end of the push block in this structure;

[0020] Figure 8 This is a schematic diagram of the return pin in this structure;

[0021] Fig. 9 This is a schematic diagram of the assembly of the push block and the housing in this structure;

[0022] Fig.10 This is a schematic diagram of the assembly of the push block and return pin in this structure. DETAILED DESCRIPTION

[0023] Implementation example Figures 4 to 10 As shown, the control structure of the steering return pin in the automobile steering switch of the present invention comprises a housing 2, a spring 3, a push block 4 and a return pin 5, wherein the housing 2 is provided with a long slot 22 in the center, and the two side walls of the long slot 22 are provided with slide grooves 23, and the rear wall is provided with a first positioning column 24, and the front end surface of the housing 2 is provided with an opening 21, and two protrusions 41 are provided at intervals on both sides of the push block 4, and a hook 42 is provided above the two protrusions 41, and a countersunk hole 43 is provided on the rear end surface of the push block 4, and a second positioning column 44 is provided in the center of the countersunk hole 43, and an arc-shaped pressing surface 45 is provided on the front end surface of the push block 4, and the push block 4 is located in the long slot 22 of the housing 2, and the two protrusions 41 and the hook 42 on both sides of the push block 4 clamp the slide grooves on the two side walls of the long slot 22 23 makes the push block 4 slide along the slide groove 23, one end of the spring 3 is nested in the first positioning column 24, and the other end is located in the countersunk hole 43 on the rear end face of the push block 4 and nested in the second positioning column 44, the return pin 5 is a step plate and a protrusion 51 is provided in the center of the top surface, and gaps matching the thickness of the slide grooves 23 on the two side walls of the long groove 22 are provided between the two sides of the protrusion 51 and the top surface of the step plate, the return pin 5 is located in the long groove 22 of the shell 2, and the slide grooves 23 on the two side walls of the long groove 22 are embedded in the gaps between the two sides of the protrusion 51 and the top surface of the step plate, the front end of the return pin 5 extends out of the opening 21 on the front end face of the shell 2, and the arc-shaped pressing surface 45 on the front end face of the push block 4 presses against the end face of the protrusion 51.

[0024] Preferably, the slide grooves 23 on both side walls of the long groove 22 of the housing 2 form a clearance fit with the gaps between the protrusions 41 and the hooks 42 on both side walls of the push block 4 .

[0025] Preferably, the gap 55 between the two sides of the protrusion 51 of the return pin 5 and the top surface of the step plate forms a clearance fit with the slide grooves 23 on the two side walls of the long groove 22 of the housing 2 .

[0026] Preferably, the step plate includes a top plate 52 and a bottom plate 53 which are arranged in parallel and connected at adjacent ends, the protrusion 51 is provided on the surface of the top plate 52 at the connecting end of the top plate 52 and the bottom plate 53 and the end face of the protrusion 51 is an arc-shaped end face 54, the push block 4 is located on the surface of the bottom plate 53 and the arc-shaped pressing surface 45 of the front end face of the push block 4 presses against the arc-shaped end face 54 of the protrusion 51.

[0027] Preferably, the two side walls of the push block 4 are provided with convex ribs 46 above the two convex blocks 41, the convex ribs 46 abut against the vertical surface 25 of the slide groove 23, and the gap between the two is 0.025-0.05 mm, and the height difference between the convex rib 46 and the top surface of the slide groove 23 is at least 0.2 mm. The provision of the convex ribs reduces the contact area between the push block and the slide groove, reduces the friction resistance, and can effectively avoid the mold parting line burrs at the intersection of the surfaces of the slide groove 23 in the housing 2, which is conducive to the sliding of the push block.

[0028] Under certain conditions, the two convex ribs 46 on both sides of the push block 4 may be eliminated, but the single-side clearance still needs to be guaranteed to be 0.025-0.05 mm.

[0029] In this structure, the arc-shaped end surface 54 of the protrusion 51 of the return pin 5 is pressed by the arc-shaped pressing surface 45 of the front end surface of the push block 4, so as to prevent the return pin 5 from being in a state of front end lowering and rear end tilting when the spring 3 is driven, thereby ensuring the balance performance of the return pin 5 during the movement; the push block 4 cooperates with the slide groove 23 of the shell 2 through the protrusion 41 and the hook 42, thereby reducing the friction between the push block 4 and the shell 2, ensuring the reliability of the push block 4 sliding along the slide groove 23 of the shell 2, and realizing the accurate driving of the return pin 5; and Fig. 9 It can be seen that the protrusion 41 forms a point contact with the lower surface of the slide groove 23, reducing the contact area between the two and reducing the friction resistance; at the same time, the two ends of the spring 3 are respectively nested in the first positioning column 24 and the second positioning column 44, ensuring the reliability of the installation of the spring 3 and preventing the spring 3 from slipping, and the spring 3 is located in the countersunk hole 43 on the rear end face of the push block 4 and is nested in the second positioning column 44. The countersunk hole 43 plays a guiding role during the compression process of the spring, making it difficult for the spring 3 to swing, ensuring that the spring 3 can reliably drive the return pin 5 through the push block 4 to realize the automatic return of the steering switch.

[0030] This structure solves the technical problems of abnormal noise caused by the jumping of the traditional return pin during movement and the inability of the steering switch to return automatically, ensures the balance of the return pin during movement, avoids imbalance between the front and rear ends of the return pin, and improves the reliability of the steering switch application.

Claims

1. A control structure for a steering return pin in a steering switch for an automobile, comprising a housing, a spring, a push block and a return pin, characterized in that: The shell is provided with a long slot in the center, and the two side walls of the long slot are provided with a slide slot, and the rear wall is provided with a first positioning column. The front end face of the shell is provided with an opening, and two protrusions are provided at intervals on both sides of the push block, and a hook is provided above the two protrusions. The rear end face of the push block is provided with a countersunk hole, and a second positioning column is provided in the center of the countersunk hole. The front end face of the push block is provided with an arc-shaped pressing surface. The push block is located in the long slot of the shell, and the two protrusions on both sides of the push block and the hook clamp the slide slots of the two side walls of the long slot so that the push block slides along the slide slot. One end of the spring is nested in the first positioning column, and the other end is located in the countersunk hole on the rear end face of the push block and nested in the second positioning column. The return pin is The step plate is provided with a protrusion in the center of the top surface, and a gap matching the thickness of the sliding grooves on the two side walls of the long groove is provided between the two sides of the protrusion and the top surface of the step plate. The return pin is located in the long groove of the shell, and the sliding grooves on the two side walls of the long groove are embedded in the gaps between the two sides of the protrusion and the top surface of the step plate. The front end of the return pin extends out of the opening of the front end surface of the shell, and the arc-shaped pressing surface of the front end surface of the push block presses the end face of the protrusion; the sliding grooves on the two side walls of the long groove of the shell form a clearance fit with the gaps between the protrusions and the hooks on both sides of the push block; the gaps between the two sides of the protrusion of the return pin and the top surface of the step plate form a clearance fit with the sliding grooves on the two side walls of the long groove of the shell.

2. The control structure of the steering return pin in the automobile steering switch according to claim 1, characterized in that: The step plate includes a top plate and a bottom plate which are arranged in parallel and connected at adjacent ends. The protrusion is arranged on the surface of the top plate at the connecting end of the top plate and the bottom plate and the end face of the protrusion is an arc-shaped end face. The push block is located on the surface of the bottom plate and the arc-shaped pressing surface of the front end face of the push block presses against the arc-shaped end face of the protrusion.

3. The control structure of the steering return pin in the automobile steering switch according to claim 2, characterized in that: The two side walls of the push block are provided with convex ribs above the two protrusions, the convex ribs abut against the vertical surface of the slide groove, and the gap between the two is 0.025-0.05mm, and the height difference between the convex rib and the top surface of the slide groove is at least 0.2mm.

Images