CN100541692C

CN100541692C - Key cap assembly

Info

Publication number: CN100541692C
Application number: CNB2005100652171A
Authority: CN
Inventors: S·霍斯; M·普林茨
Original assignee: Dirrakou Fund & Co KG GmbH
Current assignee: Dirrakou Fund & Co KG GmbH; Diehl AKO Stiftung and Co KG
Priority date: 2004-05-15
Filing date: 2005-04-14
Publication date: 2009-09-16
Anticipated expiration: 2025-04-14
Also published as: CN1697106A; DE102004024312B3; EP1596406A1

Abstract

Disclose a kind of key cap assembly, it has to a key lid that is used to start switch, push-button switch or a similar device that differs, and utilizes relevant push rod to start; A retainer 12) separate with this at least one key lid (10), this retainer has at least one elastic arm (14), and this elastic arm is as the part that returns of retainingf key lid.

Description

Key cap assembly

Technical field

The present invention relates to a kind of key cap assembly, this key cap assembly has at least one in order to start the key lid of a switch.

Background technology

Key lid or key cap assembly are used for starting similar switches such as a push-button switch, pressing switch, microswitch, and this switch utilizes one to be convenient to the element operating and see to arouse attention from the viewpoint of user's vision.

The design of this key lid is known, as DE 298 20 853 U1 that authorize the inventor are exactly an example.Disclosed key lid switch comprises a key lid with push rod in above-mentioned file, and in order to start continuous switch, a plurality of maintenances are colluded and are used for the key lid is fixed on the fixed head, and the elastic arm of a plurality of levels is as returning member.According to the switch of the respective numbers that will start, require to have the key lid of respective numbers, and they are fixed on the fixed head.

Summary of the invention

The object of the present invention is to provide a kind of key cap assembly, it has at least one key lid, can guarantee the changeability significantly in shape and design, and this key lid has lower manufacturing, assembly cost.

This purpose is reached by a kind of key cap assembly, this key cap assembly has at least one key lid, what be operably connected to that this key covers has one to return member in order to the push rod that starts a switch and one, and this returns member and turns back to the home position in order to make the key lid behind starting switch.According to the present invention, this key lid design also has a retainer that has at least one spring arm, and this retainer leaves at least one key lid, and wherein this key lid is fixed on the elastic arm, and elastic arm is as returning member.

By key lid and two members with independent manufacturing that the retainer of elastic arm forms can make shape, size, design and material that key covers satisfy user's corresponding requirements, can less complex and have big cost, also needn't modify simultaneously the design of whole key lid.The member of this key cap assembly under any circumstance is invisible to the user under state after the assembling of key cap assembly, and they are assembled on the retainer, and this retainer can be assembled in the suitable fixed head.Constitute the key lid and have elastic arm retainer single member each all have quite simple planform, therefore be easy to produce and cost lower.

In one embodiment of the invention, the downside of at least one key lid is provided with one first fixture, the top side of at least one elastic arm is provided with one second fixture, second fixture is corresponding with first fixture, thereby can be by in the interference fit between first and second fixtures, lock bolt or similarly suitable connection this at least one key lid being fixed on this at least one elastic arm.

In another embodiment of the present invention, the downside of this at least one key lid also is provided with one first regulating part, this at least one elastic arm is provided with one and corresponding second regulating part of first regulating part, thereby available first and second regulating parts cover on the predetermined direction that is fixed at least one elastic arm at least one key.

The push rod that starts respective switch preferably is placed in the downside of at least one elastic arm.In this case, can freely select the exact position of push rod in highly beneficial ground, and needn't consider the location of key lid.

This at least one elastic arm is an elastic component and/or flexibly be installed on the retainer preferably.

Description of drawings

By with reference to the accompanying drawings to description preferred, non-restrictive example, the above-mentioned and further feature and advantage that the present invention may be better understood, wherein:

Fig. 1 is the perspective view that tilts to look below a plurality of key lids of the preferred embodiment of the present invention; With

Fig. 2 represents the perspective view that tilts to look from the top of a key cap assemblies of the preferred embodiment of the present invention.

Embodiment

Referring now to Fig. 1 and 2,, describes the preferred embodiment of key cap assembly of the present invention in detail with exemplary forms.The key cap assembly of present embodiment comprise altogether three be used for starting the key lid of three corresponding switches in, the present invention also can use a kind ofly only to be had a key lid or has two or more than in the key cap assembly under the situation of three keys lids.Key cap assembly of the present invention is specially adapted on the similar switches such as start button switch, pressing switch, microswitch, as an example, these switches can be used on the operation panel as household electrical appliance such as washing machine, driers, are not limited in these special purposes certainly.

The main member of key cap assembly of the present invention is 10 and retainers 12 with at least one elastic arm 14 of at least one key lid.Form an independent member, separate under the situation of producing at key lid 10, just can make this key cover 10 shape, size, design and material in the corresponding requirements that does not have adaptation user under very big complexity and expensive and the situation that needn't revise whole key cap assembly and relevant fabrication tool with retainer 12 with elastic arm 14.This just can guarantee the mobility that key cap assembly is produced, and makes the complexity and the cost of producing and assembling lower simultaneously.

As what find out from the perspective view of Fig. 1, the downside of each key lid 10 is provided with corresponding first fixture 16 and one first regulating part 18.Here among the embodiment of Miao Shuing, this first fixture 16 is a special facet bodily form formula, and first regulating part 18 is the pin form.

Retainer 12 is preferably made by duroplasts, three elastic arms, 14 best and retainer 12 whole formation that have in the present embodiment, connection between retainer 12 and the elastic arm 14 provides elastic arm 14 desired elasticity, thereby makes elastic arm can be used as the part that returns of key cap assembly.The also available elastomeric material of this elastic arm 14 is made in addition.

What be located at elastic arm 14 top sides is corresponding second fixture 20, and it has the corresponding configuration of first fixture with key lid 10.In illustrated embodiment, second fixture 20 of elastic arm is one (circular cone) cap cover shape, like this, can key lid 10 be fixed on the elastic arm 14 by the interference fit between first and second fixtures 16,20.As can be seen, first and second fixtures 16,20 are not limited only to illustrated shape, and for example, first and second fixtures 16,20 also can adopt lock bolt engagement or similar suitable connection.

The elastic arm 14 of each retainer 12 also has second regulating part 22, and it has first regulating part, the 18 corresponding configurations with key lid 10.In illustrated embodiment, second regulating part 22 of elastic arm 14 is flute profile, and key lid 10 first regulating parts 18 that are shaped as pin enter this groove, can mesh with groove.As can be seen, the shape and size of first and second regulating parts 18,22 are not limited only to illustrated shape and size.

By adopting first and second regulating parts 18 and 22, key lid 10 can be fixed on the predetermined direction of elastic arm at an easy rate.As can be seen, say to be the design configuration of first and second fixtures 16,20 with the regulatory function sum total of first and second regulating parts 18,20 in principle.

Be installed on each elastic arm 14, especially its below is a corresponding push rod (not shown), when elastic arm 14 is subjected to the pressure of key lid 10, just started and elastic arm 14 or key lid 10 switches that link to each other, after key lid 10 unclamps again, key lid 10 turns back to its original position by elastic arm 14, and push rod is also withdrawn.

In addition, push rod also can be located at the downside of key lid 10 and be conducted through a suitable openings on the elastic arm 14.Yet push rod is installed to the advantage that concerning the design configuration of key lid, has the bigger degree of freedom on the elastic arm 14.In the case, except push rod can be positioned on the elastic arm, also can make the exact position of the key lid 10 on switch and the elastic arm 14 corresponding.

Retainer 12 also is provided with the fixture as (not shown) is colluded in maintenance, keeps colluding owing to adopted, and retainer 12 can be fixed to corresponding fixed head in known manner, on the circuit board that switch is installed.

Claims

1. key cap assembly comprises at least one key lid (10), and the part that returns that push rod that starts a switch and make the key lid turn back to the starting position after this is switch activated covers with this key and operationally connects together,

It is characterized in that:

This key cap assembly also has a retainer (12), and this retainer has at least one elastic arm (14), and at least one key lid (10) of this retainer and this separates, and wherein the key lid is fixed on the elastic arm, and this elastic arm is as returning part.

2. according to the key cap assembly of claim 1, it is characterized in that: this at least one key lid (10) is provided with one first fixture (16) at its downside, this at least one elastic arm (14) is provided with one second fixture (20) in its top side, this at least one key lid (10) is secured at least one elastic arm (14) by the interference fit or the lock bolt engagement of first and second fixtures (16,20).

3. according to the key cap assembly of claim 1 or 2, it is characterized in that: make at least one key lid (10) be provided with first regulating part (18) at its downside, this at least one elastic arm (14) is provided with one second regulating part (22), this at least one key lid (10) is secured on this at least one elastic arm (14) by first and second regulating parts (18,22) in a predetermined direction.

4. according to the key cap assembly of claim 1 or 2, it is characterized in that: push rod is arranged on the downside of this at least one elastic arm (14).

5. according to the key cap assembly of claim 1 or 2, it is characterized in that: this at least one elastic arm (14) is the elastic arm with elastic property, and/or this elastic arm flexibly is installed on the retainer (12).