CN203118809U

CN203118809U - Switch structure

Info

Publication number: CN203118809U
Application number: CN 201320080907
Authority: CN
Inventors: 张红; 李飞熊; 王文兵; 李磊
Original assignee: HEFEI TONGZHI ELECTRICAL CONTROL TECHNOLOGY Co Ltd
Current assignee: Hefei Tongzhi Electrical Control Technology Co ltd
Priority date: 2013-02-21
Filing date: 2013-02-21
Publication date: 2013-08-07
Anticipated expiration: 2023-02-21

Abstract

The utility model discloses a switch structure. A shell panel of the switch structure is provided with a hole opening for exposing a contact of a button switch, an elastic contact film cover is arranged at the hole opening, and the edge of the elastic contact film cover is in sealing fit with the hole wall of the hole opening or the end face of the hole opening. When in use, the button switch can be opened and closed by pressing the elastic contact film cover to trigger the button switch. Moreover, as the edge of the elastic contact film cover is in sealing fit with the hole wall of the hole opening or the end face of the hole opening, water can be effectively prevented from entering an internal cavity of the shell panel, thus achieving the function of waterproofing.

Description

Construction of switch

Technical field

The utility model electronic devices and components are specifically related to a kind of construction of switch.

Background technology

In the prior art, the case panel at driving cabin display terminal place is provided with the aperture that the contact for push-button switch appears, the place, aperture is provided with the button that is used for pressing push-button switch that exposes, during use, can realize switch motion by pressing keys actuation button switch, but the slit between the hole wall in the edge of button and aperture also provides the space for the inside that moisture enters display terminal, moisture enter built-in line out of service even the damage that can cause display terminal, therefore, whether the construction of switch on the driving cabin display terminal possesses water-proof function and seems particularly important.

Summary of the invention

The purpose of this utility model provides a kind of simple in structure, construction of switch with water-proof function.

For achieving the above object, the technical solution adopted in the utility model is: a kind of construction of switch, its case panel is provided with the aperture that the contact for push-button switch appears, it is characterized in that: place, described aperture is provided with elasticity and touches the film cover, constitutes between the edge of the tactile film cover of elasticity and the hole wall in aperture or the aperture end face to be sealed and matched.

Owing to adopt such scheme, by touching the switch work that film cover actuation button switch can be realized push-button switch by compression elasticity, simultaneously, constitute between the edge of the tactile film cover of elasticity and the hole wall in aperture or the aperture end face and be sealed and matched, effectively stop moisture to enter the internal cavity of case panel, realize water-proof function.

Description of drawings

Fig. 1 is assembly structure figure of the present utility model;

Fig. 2 be elasticity touch film cover and pressure cap in conjunction with schematic diagram.

Embodiment

A kind of construction of switch, its case panel 10 is provided with the aperture 11 that the contact 21 for push-button switch 20 appears, 11 places, described aperture are provided with elasticity and touch film cover 30, constitute between the edge of the tactile film cover 30 of elasticity and the hole wall in aperture 11 or the aperture end face and be sealed and matched, the slit that communicates between the hole wall in aperture 11 and the enclosure interior cavity is sealed fully like this, stop moisture to enter effectively, realize the water-proof function of construction of switch.When concrete assembling is used, by touching the switch work that film cover 30 actuation button switches 20 can be realized push-button switch 20 by compression elasticity, the utility model is simple in structure, install and use in the position of driving cabin display terminal and can play good waterproof effect, the job security height.

As further preferred version: described elasticity is touched film cover 30 for having the cap-like structure of flange 31, the cover chamber of the tactile film cover 30 of elasticity is located at contact 21 positions of push-button switch 20 identically, touches the sensitivity that film cover 30 can guarantee switch motion by compression elasticity like this.The crown that elasticity is touched film cover 30 is positioned at 11 places, aperture, its crown is concordant with the outer face in aperture 11 or all can a little more than the outer face in aperture 11, elasticity is touched the flange 31 of film cover 30 and edge, the inner end formation in aperture 11 is sealed and matched, elasticity is touched the hole wall in film cover 30 and aperture 11 like this, the edge, inner end in aperture 11 is sealed and matched, and waterproof effect is better.Preferably, described elasticity is touched film cover 30 and is made by silicon rubber, selects for use silicon rubber not only to meet the elasticity requirement, compression molding easily, and good seal performance.

Further, be provided with pillar 40 in the internal cavity of described case panel 10, the caliber of pillar 40 is greater than the aperture in aperture 11, the flange 31 that described elasticity is touched film cover 30 between the pipe end 41 of the edge, inner end in aperture 11 and pillar 40 and formation compress and be sealed and matched, as shown in Figure 1, the side plate face of flange 31 and the plate face of housing are fitted, the edge that another lateral plates is resisted against the pipe end 41 of pillar 40 realizes being sealed and matched, stop moisture to enter the internal cavity of case panel 10 effectively, and the pipe end 41 of pillar 40 is pressed on the edge of flange 31, provide enough displacements in the time of can guaranteeing flange 31 distortion like this, so that the switch over travel of push-button switch 20 is achieved.

Further, the outer cover that described elasticity is touched film cover 30 is provided with pressure cap 50, and the aperture 11 on pressure cap 50 and the case panel 10 constitutes movingly, can realize the switch motion of push-button switch by pressing pressure cap 50 like this.Described pressure cap 50 can be the press-key structure that is used for pressing push-button switch 20 in the prior art, preferably as Fig. 1,51 cap-like structure turns edge having shown in 2, turning edge of pressure cap 50 51 is positioned at elasticity and touches the flange 31 of film cover 30 and counterbore step 111 places of 11 inner ends, aperture, and 31 the edge of turning edge cooperates for arc-shaped transition with counterbore step 111, so can further strengthen the waterproof effect of switch, can there be certain clearance in cooperating between the pressure cap of setting up 50 and the hole wall in aperture 11, can reduce to press the stroke action of easier realization push-button switch 20 like this, simultaneously, the material hardness of described pressure cap 50 needs moderate, as silicon rubber, comfortable feel and possess globality when pressing, the steady displacement of pressure cap 50 meetings realizes push action reliably when having guaranteed to press pressure cap 50.

Further, the flange 31 of the tactile film cover 30 of described elasticity is provided with first and second projectioies 311,312 of ring-type near the side plate face of pressure caps 50, described first and second projectioies 311,312 circumferentially arranging continuously along flange 31, in conjunction with as shown in Figure 1, 2, first projection 311 51 presses mutually with turning edge of pressure cap 50, when pressing pressure cap 50 like this, the pressure that its 51 pairs of elasticity that turn edge are touched the flange 31 of film cover 30 mainly concentrates on first projection 311, so can reduce to press the dynamics of pressure cap 50, improve the sensitivity of construction of switch, for the user provides convenience.Second projection 312 is positioned at the edge of flange 31, can also between first and second projectioies 311,312, add the 3rd projection 313, the second and the 3rd projection 312,313 is set makes the flange 31 plate face concave-convex surface near pressure caps 50, the housing that matches with its structure is set again, can further improve sealing effectiveness, stop moisture to enter the internal cavity of case panel 10.

Claims

1. construction of switch, its case panel (10) is provided with the aperture (11) that appears of contact (21) for push-button switch (20), it is characterized in that: described aperture (11) are located to be provided with elasticity and are touched film cover (30), constitute between the edge of the tactile film cover (30) of elasticity and the hole wall of aperture (11) or the aperture end face to be sealed and matched.

2. construction of switch according to claim 1, it is characterized in that: described elasticity is touched film cover (30) for having the cap shape of flange (31), its cover chamber is located at contact (21) position of push-button switch (20) identically, flange (31) is sealed and matched with edge, the inner end formation in aperture (11), and the crown of the tactile film cover (30) of elasticity is positioned at aperture (11) and locates.

3. construction of switch according to claim 2, it is characterized in that: be provided with pillar (40) in the internal cavity of described case panel (10), the caliber of pillar (40) is greater than the aperture of aperture (11), between the edge, inner end that the flange (31) that described elasticity is touched film cover (30) is positioned at aperture (11) and the pipe end (41) of pillar (40) and formation compress and be sealed and matched.

4. construction of switch according to claim 3, it is characterized in that: the pipe end (41) of described pillar (40) is pressed on the edge of flange (31).

5. want 2 or 3 described constructions of switch according to right, it is characterized in that: the outer cover that described elasticity is touched film cover (30) is provided with pressure cap (50), and the aperture (11) on described pressure cap (50) and the case panel (10) constitutes movingly.

6. construction of switch according to claim 4, it is characterized in that: turn edge for the having cap shape of (51) of described pressure cap (50), turn edge (51) of pressure cap (50) are positioned at elasticity and touch between the counterbore step (111) of the flange (31) of film cover (30) and inner end, aperture (11).

7. construction of switch according to claim 5, it is characterized in that: the flange (31) of the tactile film cover (30) of described elasticity is provided with first, second projection (311,312) of ring-type near the side plate face of pressure cap (50), described first, second projection (311,312) is circumferentially arranged continuously along flange (31), first projection (311) presses mutually with turning edge of pressure cap (50), and second projection is positioned at the edge of flange (31).