CN2922092Y

CN2922092Y - A push-button

Info

Publication number: CN2922092Y
Application number: CN 200620121338
Authority: CN
Inventors: 赵明
Original assignee: Yuande Biological Medicine Engineering Co Ltd Beijing
Current assignee: Haifuning High-strength Ultrasonic Technology (Beijing) Co., Ltd.
Priority date: 2006-06-27
Filing date: 2006-06-27
Publication date: 2007-07-11
Anticipated expiration: 2016-06-27

Abstract

The utility model discloses a key-press comprising a key cap with an integrated central hollow column by which the key cap is connected with a push switch body for turning on and off the push switch operably. The key-press also comprises a positioning board on which the push switch body is fixed; a dust-proof component arranged on the positioning board and comprising a dust-proof body and an elastic dust-proof film which is provided with a central opening corresponding to the hollow column of the key cap; a press plate for fixing the dust-proof component and the key cap, wherein, the dust-proof component is between the press plate and the positioning plate; one end of the hollow column of the key cap is connected with the elastic dust-proof film of the dust-proof component at the opening of the elastic dust-proof film; the thickness of the elastic dust-proof film can enable the motion route of the key cap to reach 5mm-6mm, and the thickness of the elastic dust-proof film is preferred to be 0.2mm-0.5mm.

Description

A kind of button

Technical field

The utility model relates to a kind of button, especially relates to a kind of silica gel push-button, more particularly, relates to a kind of big stroke elastic silica gel button with good sealing function.

Background technology

Silica gel push-button is a kind of new type in the molded button of rubber pattern.Silica gel compression molding button is and the immediate prior art of silica gel push-button described in the utility model.The molded button of rubber pattern is usually used on instrument, communication apparatus, household electrical appliance and the medical treatment electronic equipment, is used with corresponding switch or circuit as functional unit and information indicating device.Elastomeric material commonly used mainly contains silica gel material (SILICONE) and ethylene propylene diene rubber (EPDM) etc., and wherein silica gel material is because excellents such as its mechanical performance, manufacturing process and biocompatibility are the most frequently used button compression molding elastomeric materials.Silica gel material is transparent insulating material, thereby in silica gel material, fill out assorted colored materials or fluorescent material etc., after manufacturing procedures such as batch mixing, mold pressing, sulfuration, can produce from transparent to having shades of colour, not luminous, thereby satisfy multiple instructions for use to the elasticity or the weak elastic silica gel button product that fluorescent effect are arranged and have multiple Shao's formula hardness (SHA).

But common silica gel compression molding button has limited its application because of following shortcoming.These defectives mainly comprise: 1, the elastic wall deformation range is little, causes the movement travel of whole keycap short, and the switch that is suitable for mainly is the light current switch, rarely has the example that cooperates the forceful electric power switch to use.2, elastic wall is difficult for making, and the rate of finished products during manufacturing is lower.

Summary of the invention

The purpose of this utility model provides a kind of novel button, its can with push switch, be used in combination such as general standard push type 220V forceful electric power mains switch, have the button of good insulation performance characteristic, operating handle, dustproof characteristic and big movement travel.

According to the utility model, a kind of button is provided, comprise keycap, this keycap has the central hollow column that forms, this keycap links to each other with the Switch main body of push switch by this hollow column, operationally to open and close push switch, it is characterized in that also comprising:

Location-plate, the Switch main body of push switch are fixed on this location-plate;

Dustproof element, it is arranged on the described location-plate, and comprises that dustproof body and the dustproof film of elasticity, the dustproof film of described elasticity have an opening that is positioned at the center, and this opening is corresponding with the hollow column of keycap; And

Pressing plate is used for fixing described dustproof element and keycap;

Wherein, described dustproof element is between described pressing plate and location-plate, and an end of the hollow column of described keycap is connected at the described opening part of the dustproof film of this elasticity with the dustproof film of the elasticity of described dustproof element; And

The thickness of the dustproof film of described elasticity forms and makes the movement travel of keycap can reach 5mm-6mm.

The dustproof film of described dustproof body and elasticity can be an overall structure.Also can link together by bonding agent then for the split structure.

Preferably, the dustproof film of described dustproof body and elasticity is formed by mold pressing by silastic material.

Preferably, the thickness of the dustproof film of described elasticity is 0.2mm-0.5mm.

Adopt the button of the technical solution of the utility model to obtain application in practice,, satisfy application requirements fully through verification experimental verification.In preferred embodiment of the present utility model, button is processed by mold pressing by silastic material, has the dustproof film of telescopic elasticity.When being used in combination with general standard push switch, can prevent effectively that liquid, dust and other metal/non-metal particle from entering in the push switch, prevent the generation of accidents such as short circuit, operation be not smooth, support equipment and operating personnel's safety.Button of the present utility model can prevent breakage, lax, unbalance stress, the generation of failure phenomenon such as aging in advance effectively, and has advantages such as good sealing, dustproof and big movement travel.Be its useful life 6 to 7 years.

Description of drawings

Below with reference to accompanying drawings embodiment of the present utility model is described, describing by these will be more clearly, intactly understand the utility model, wherein:

Fig. 1 shows the structure of button of the present utility model, and the situation when there is shown this button and being used in combination with push switch shows the service position of the dustproof film of elasticity especially;

Situation when Fig. 2 has illustrated button of the present utility model and is used in combination with push switch with stereogram;

Fig. 3 shows the structure and the annexation of the keycap and the dustproof element of button of the present utility model with three-dimensional exploded view.

Embodiment

With reference to Fig. 1, its integral body shows button of the present utility model, has shown the situation when this button is used in combination with push switch among the figure.

Described button comprises: keycap 1, and location-plate 2, pressing plate 3, the Switch main body 4 of push switch, this push switch is such as being general standard push type mains switch and dustproof element 7.Because push switch is a prior art, do not constitute necessary part of the present utility model, therefore it is not done detailed description.

As Fig. 1 and more clearly as shown in Figure 3, keycap 1 has the central hollow column 8 that forms, and this keycap 1 links to each other with the Switch main body 4 of push switch by this hollow column 8, operationally to open and close push switch.

As illustrated in fig. 1 and 2, location-plate 2 is used for fixing the Switch main body 4 of push switch, and dustproof element 7 is arranged on this location-plate 2 simultaneously.

As Fig. 3 clearly shown in, dustproof element 7 comprises dustproof body 6 and the dustproof film 5 of elasticity.Center at the dustproof film 5 of elasticity has an opening 9, and this opening 9 is corresponding with the hollow column 8 of keycap 1.When assembling, the dustproof film 5 of one end of the hollow column 8 of keycap 1 and elasticity at opening 9 places of the dustproof film of this elasticity such as closely being connected by bonding agent, thereby the pressing lever of Switch main body 4 can pass this opening 9 and enter in the hollow column 8, like this, the motion by keycap 1 thereby hollow column 8 just can open and close push switch.In addition, an end of hollow column 8 also plays effect dustproof, sealing with the dustproof film 5 of elasticity in tight connection the at opening 9 places.

Pressing plate 3 is used for fixing dustproof element 7 and keycap 1, prevents that them from use sliding.Therefore, as illustrated in fig. 1 and 2, dustproof element 7 just is clipped between pressing plate 3 and the location-plate 4, forms the structure of similar " sandwich ".Pressing plate 3 can be independent part, also can be the part of Instrument shell.

As mentioned above, dustproof element 7 comprises dustproof body 6 and the dustproof film 5 of elasticity, and wherein, the dustproof film 5 of this dustproof body 6 and elasticity can form as one, and forms by mold pressing is whole.Selectively, the dustproof film 5 of dustproof body 6 and elasticity also can form single parts respectively, then by linking together hermetically such as bonding agent, makes them can prevent that liquid, dust and other metal/non-metal particle from entering in the push switch.It is apparent to those skilled in the art that the mode that two independent parts are linked together hermetically is a lot, such as the convex-concave mouth interlock by two parts etc.

Preferably, as shown in the figure, the dustproof film 5 of dustproof body 6 and elasticity is limited with a cavity, the lower end that is used to hold keycap 1 jointly.In assembling, the lower end of keycap 1 is passed through to be connected such as bonding mode and the dustproof film 5 of elasticity, thereby is contained in this cavity.

In this execution mode of the present utility model, the dustproof film of dustproof body 6 and elasticity 5 is formed by silastic material, and adopts traditional die press technology for forming to make.Certainly, be appreciated that other has big flexible material and also can be used for dustproof element of the present utility model.

In the utility model, have big movement travel in order to make keycap 1, such as 5mm-6mm, have certain thickness with regard to the dustproof film 5 of elasticity of demand.The thickness of the dustproof film 5 of elasticity is too small, then can produce the possibility of breaking, and thickness is excessive, and then the resistance of motion of keycap 1 is just big.Therefore, preferably, the thickness of the dustproof film of described elasticity is 0.2mm-0.5mm.

Further, should be realized that, the dustproof element 7 especially shape of the dustproof film 5 of elasticity depends on the shape of the push switch that it will be applied to, such as, push switch or Switch main body are circular, then the dustproof film 5 of elasticity will be made corresponding circle, if push switch or Switch main body are square, then the dustproof film 5 of elasticity will be made square accordingly.

Below the simple assembling process of describing button of the present utility model.

When assembling, at first Switch main body 4 is fixed on the location-plate 2; Then dustproof element 7 is arranged on the proper operation position on the location-plate 2; And keycap 1 is arranged on the dustproof element 7, the pressing lever of Switch main body 4 is inserted in the hollow column 8; At last pressing plate 3 is pressed on the dustproof element 7, and fixing,, thereby forms a complete press-key structure with fixedly dustproof element 7 and keycap 1 together with location-plate 2.

Wherein, the fixed form of pressing plate 3 and location-plate 2 can be on the basis of considering many-sided factors such as dismounting, maintenance, replacing, adopts multiple known ways such as bonding, screw crimping.

In the present embodiment,, therefore can adopt the mode of separately making to make, again both are adhesively fixed together during use because keycap 1 is the structure of split with dustproof element 7.Can enlarge the degree of freedom of the design and use of dustproof element and keycap like this.Allow dustproof element be used in combination, satisfy the instructions for use that client proposes with the keycap that difformity, different silk-screen identification pattern, different colours and gloss, transparency require.

In addition, will be recognized that the keycap 1 and the design of the dustproof film 5 of elasticity must adapt to the size and the performance requirement of the push switch of concrete use.

Described preferred forms of the present utility model as example above, should be understood that, can also do many modification and improvement, the structure that can form as one with the dustproof film of the elasticity of dustproof element such as, keycap 1 etc. the utility model.Because its principle is the same, therefore no longer it is described in detail.

More than the utility model has been done exemplary description; what should be understood that is; under the situation of scope that does not break away from the protection of spirit of the present utility model and appended claims, any modification, revise or be equal to replacement and all fall within the protection range of the present utility model.

Claims

1. a button comprises keycap, and this keycap has the central hollow column that forms, and this keycap links to each other with the Switch main body of push switch by this hollow column, operationally to open and close push switch, it is characterized in that also comprising:

Pressing plate is used for fixing described dustproof element and keycap;

2. button according to claim 1 is characterized in that: the dustproof film of described dustproof body and elasticity forms as one.

3. button according to claim 1 is characterized in that: the dustproof film of described dustproof body and elasticity links together by bonding agent.

4. according to claim 2 or 3 described buttons, it is characterized in that: the dustproof film of described dustproof body and elasticity is formed by mold pressing by silastic material.

5. according to each described button among the claim 1-3, it is characterized in that: the thickness of the dustproof film of described elasticity is 0.2mm-0.5mm.

6. button according to claim 4 is characterized in that: the thickness of the dustproof film of described elasticity is 0.2mm-0.5mm.

7. according to each described button among the claim 1-3, it is characterized in that: a common cavity, the lower end that is used to hold keycap of limiting of the dustproof film of described dustproof body and elasticity.

8. button according to claim 7 is characterized in that: the dustproof film of described dustproof body and elasticity is formed by mold pressing by silastic material.

9. button according to claim 8 is characterized in that: the thickness of the dustproof film of described elasticity is 0.2mm-0.5mm.

10. button according to claim 1 is characterized in that: described keycap and dustproof element form as one.