CN204332719U - steering wheel switch - Google Patents

Abstract

A kind of steering wheel switch, is direct press type button switch, the inwall of housing is provided with a gathering sill and two guiding ribs, and the outer wall of push rod is then provided with a convex tendon and two grooves, and one_to_one corresponding gathering sill and guiding rib move cooperation respectively; Push rod is also provided with an auxiliary tank, and then corresponding auxiliary bar and this auxiliary tank matched in clearance of being provided with on housing, forms and presses anti-sticking hysteresis buffer structure.Of the present utility model rational in infrastructure, utilize three main muscle, slot fit limit button position, ensure to press the motion in stroke directions smooth and easy, when the Impact direction of button and its direction of motion inconsistent time, matched in clearance due to auxiliary bar, groove leaves certain surplus, can cushioning effect be played, reduce the friction between push rod and housing, effectively can improve the phenomenons such as shift knob clamping stagnation, feel be bad.

Description

steering wheel switch

Technical field:

The utility model relates to a function control switch used on an automobile steering wheel.

Background technique:

The function control switches installed on the steering wheel of automobiles generally have two forms: direct-press type and rocker type. The direct-press type buttons are more widely used due to structural reasons. Generally, the push guide structure of the direct push switch needs to completely limit the movement in the horizontal direction, and only keep the movement in the direction of the push stroke to prevent the switch from shaking. However, when the direction of the pressing force on the switch is tilted or the switch is slightly deformed due to the force, since the position of the switch button is completely limited, the pressing guide structure will generate a large friction force, and the pressing is prone to jamming and unsmooth movement , poor hand feeling and other phenomena, the performance needs to be further improved.

Invention content:

Aiming at the deficiencies of the prior art, the utility model provides a steering wheel switch with reasonable structure and good actuation performance.

The utility model comprises a shell and a circuit board, the circuit board is connected with a light touch switch and a connector, the button is fixed on the upper end of the push rod, and the push rod is placed in the shell to move and cooperate, and the lower part of the push rod and the light touch The switch corresponds to the touch to form a direct push button switch device. There is a guide groove and two guide ribs on the inner wall of the housing, and a convex rib and two grooves are provided on the outer wall of the push rod to correspond to the guide grooves. It moves and cooperates with the guide rib; there is also an auxiliary groove on the push rod, and the auxiliary rib is correspondingly arranged on the housing to cooperate with the auxiliary groove to form a pressing anti-jamming buffer structure.

The utility model has a reasonable structure, uses three main ribs and grooves to cooperate to limit the position of the button, and ensures smooth movement in the direction of the pressing stroke. A certain margin is left, which can play a buffering role, reduce the friction between the push rod member and the housing, and can effectively improve the phenomenon of switch button sticking and poor hand feeling.

Further illustrate the utility model below in conjunction with accompanying drawing and embodiment.

Description of drawings:

Fig. 1 is a schematic diagram of the main structure of a specific embodiment.

Fig. 2 is a perspective view of the push rod member.

Fig. 3 is a top view of the push rod.

Fig. 4 is a perspective view of the casing.

Fig. 5 is a top view of the housing.

Fig. 6 is a front view of the button.

Fig. 7 is a right side view of the button.

Detailed ways:

As shown in Figures 1 to 7, a circuit board 4 is installed in the housing 1, and a light touch switch 5 and a connector 6 are connected to the circuit board 4. The button 2 is fixed on the upper end of the push rod 3, and the push rod 3 is placed It moves and cooperates in the housing 1, and the lower part of the push rod 3 and the tact switch 5 correspond to touch and cooperate to form a direct push button switch device. A guide groove 7 and two guide ribs 8 are provided on the inner wall of the housing 1, and a convex rib 9 and two grooves 10 are provided on the outer wall of the push rod member 3, respectively corresponding to the guide groove 7 and the guide ribs 8 for moving cooperation. . An auxiliary groove 11 is also provided on the push rod member 3 , and an auxiliary rib 12 is correspondingly provided on the housing 1 in clearance fit with the auxiliary groove 11 to form an anti-jamming buffer structure for pressing.

When a downward pressure is applied to the button 2, the button 2 transmits the force to the push rod part 3, and the push rod part 3 moves along the direction of the pressure under the cooperation of the guide groove 7 and the raised rib 9, and the guide rib 8 and the groove 10. Move and press the tact switch 5 to make the tact switch 5 conduct, the circuit forms a path, and the control function can be realized. After removing the pressing external force, the tact switch 5 automatically resets, and transmits its reset force to the push rod 3, forcing the push rod 3 to move up along the guiding groove to reach the initial state, that is, the function disconnection state. If the direction of the pressing force on the switch is tilted or the switch is slightly deformed due to the force, that is, when the force direction of the button 2 is inconsistent with its movement direction, there is a certain margin due to the clearance fit between the auxiliary rib 12 and the auxiliary groove 11. , can play a buffering role, reduce the friction between the push rod member 3 and the housing 1, and effectively improve the switch button sticking, poor hand feeling and other phenomena.

In this embodiment, the lower part of the outer wall of the push rod member 3 is also provided with a positioning block 13, and the upper part of the inner wall of the housing 1 is correspondingly provided with a positioning buckle 14 to form a spring-up limiting structure. When the push rod member 3 moves up along the rib groove of the guide, the positioning block 13 touches the positioning buckle 14 and reaches the upper spring height point, which is the initial state of the switch. The button 2 is provided with a mounting hole 15, and the push rod member 3 is provided with a buckle 16 which engages with the mounting hole 15 correspondingly to form a button fixing structure, so that the button and the push rod member 3 are connected more firmly. In addition, steering wheel switches are generally mounted on the steering wheel in pairs, left and right, and the shapes of the left and right switches can be designed to be symmetrical to each other, but the overall structure is still the same.

Claims (3)

1. a steering wheel switch, comprise housing and circuit board, circuit board is connected with touch-switch and connector, button is fixed on push rod upper end, this push rod is placed in the mobile cooperation of housing, and the bottom of push rod and the touching of touch-switch correspondence coordinate formation direct press type button switch, it is characterized by: on the inwall of housing (1), be provided with a gathering sill (7) and two guiding ribs (8), the outer wall of push rod (3) is then provided with a convex tendon (9) and two groove (10) one_to_one corresponding gathering sill (7) and mobile cooperations of guiding rib (8) respectively; Push rod (3) is also provided with an auxiliary tank (11), then correspondingly on housing (1) is provided with auxiliary bar (12) and this auxiliary tank (11) matched in clearance, form and press anti-sticking hysteresis buffer structure.

2. steering wheel switch according to claim 1, is characterized by: the outer wall bottom of push rod (3) is also provided with locating piece (13), and the upper inside wall correspondence of housing (1) is provided with locating button (14) and matches, and formation plays position limiting structure.

3. steering wheel switch according to claim 1 and 2, is characterized by: button (2) is provided with installing hole (15), and push rod (3) is provided with buckle (16) and engages with installing hole (15) correspondence, forms button fixed structure.