CN2629186Y

CN2629186Y - Improved micro switch structure

Info

Publication number: CN2629186Y
Application number: CN 03256428
Authority: CN
Inventors: 吕文祥
Original assignee: Xinju Enterprise Co Ltd
Current assignee: Zippy Technology Corp
Priority date: 2003-04-28
Filing date: 2003-04-28
Publication date: 2004-07-28
Anticipated expiration: 2013-04-28

Abstract

The utility model relates to an improved microswitch structure, in particular to a microswitch which can reduce electrostatic discharge damage and is easy to be pressed. A first guide plate and a second guide plate are positioned at a first contact pin towards a push opening, the contact pin is fixed inside the chamber of a shell; thereby the assembled position of a differential mechanism is lowered so as to reach a higher electrostatic discharge test benchmark. Due to the differential mechanism is moved down, the push opening of the shell can extend a supporting section to form a press space with the first guide plate, so that the button is located inside the press space for displacement to prevent the shift from being generated, by which the press electrical connections of the microswitch can be ensured.

Description

The sensitive switch structure of improvement

Technical field

The utility model relates to a kind of sensitive switch structure of improvement, refers to especially a kind ofly be applied to electronic product such as mouse forms the sensitive switch that electrically connects through pressing button.

Background technology

The scope that sensitive switch is applied to electronic product more and more widely, electrostatic discharge testing benchmark (the Electro-Static Discharge of electronic product thus arranges in pairs or groups, ESD), produce with the situation of avoiding electronic system inefficacy (electrical failure), how the metal pin being reduced conductive site influences internal circuit to avoid the instantaneous pressure discharge, is that the switch dealer researches and develops one of emphasis at present.

As Fig. 1-1, shown in the 1-2, for the applicant applies for and checks and approves bulletin the 2276193rd, No. 2183209 utility model patents " the common pin improvement structure of sensitive switch ", with regard to the sensitive switch that applies to electronic product at present, because its formed overall volume of collocation mechanism is little, therefore using as miniaturization products such as mouses will be quite convenient, but, because the ESD test benchmark is got over strict, contactless electronic product test benchmark by the industry requirement up to ± 16KV, standard is higher than a times of proper testing standard, it is high more good more to show that existing industry demand ESD test must reach, but with regard to the product of prostatitis, because common pin is the U type, be positioned at the top for micromotion mechanism assembling point, nearer with the spacing of pushing mouth, will be undesirable gradually for day by day strict test benchmark, therefore how thinking deeply reduction assembling micromotion mechanism becomes a great problem.

And for example the applicant applies for and checks and approves the 2177286th, No. 2187829 utility model patent of bulletin " the improvement structure of sensitive switch ", this case discloses out one and extends location-plate in the same way and can be assembled in from a common pin of pushing mouthful than long spacing by micromotion mechanism, but this type switch mainly is used in the electronic switch of three pins, just also need arrange in pairs or groups in the design other pin and case design will be so will be a quantum jump if this common leg structure can be applied to have switch now.

In addition, the button of above-listed switch all has a common defective to have much room for improvement, when button moves down when entering in the housing down pressing spring fully, only depend on spring to provide support at present, be easy to generate skew and cause the non-perpendicular power of the dynamics of pressing down, therefore cause the spring stress inequality or be not enough to form to electrically connect, even more serious is to cause the camber of spring damage because of pressing down point of application skew, and this point also is that sensitive switch need improve part.

The utility model content

Main purpose of the present utility model, be to solve above-mentioned defective, avoid the existence of defective, through research and development for many years, the advantages that the utility model is constructed above-listed two patents finally, and need the housing of collocation, lid and pin are made the optimum configuration alteration of form, touch pin through first of configuration in the accommodation space of housing and be provided with first in the same way to pushing mouth, two location-plates, allow the micromotion mechanism assembling position down reduce, to reach higher electrostatic discharge testing benchmark, and pushing mouthful because of micromotion mechanism moves down of housing can be extended out a hold segment and first location-plate and is formed with and pushes the space, allow button be positioned to push the space intrinsic displacement, so that can not produce skew, can guarantee the electric connection of sensitive switch pressurized like this.

Description of drawings

Fig. 1-1,1-2 are the sensitive switch action schematic diagrames of knowing.

Fig. 2 is a stereoscopic schematic diagram of the present utility model.

Fig. 3 is a STRUCTURE DECOMPOSITION schematic diagram of the present utility model.

Fig. 4 is that of the present utility model first and second touches the pin configuration schematic diagram.

Fig. 5-1,5-2 are sensitive switch action schematic diagrames of the present utility model.

Embodiment

Relevant detailed description of the present utility model and technology contents, existing accompanying drawings is as follows:

See also Fig. 2,3, shown in 4, it is the utility model stereoscopic, the STRUCTURE DECOMPOSITION and first pin 30, second touches pin 50 configuration schematic diagram, as shown in the figure: the utility model mainly has a housing 10, in housing 10, has an accommodation space 11, this accommodation space 11 has open side and two breach 13 that dispose a lid 20, aforementioned housing 10 and lid 20 are provided with the fixing hole 16 and the fixed leg 22 of corresponding joint, and this lid 20 has the protuberance 21 that mouth 12 is pushed in a sealing, and be provided with one in housing 10 and push mouth 12, this is pushed mouthfuls 12 and is extended with a hold segment 121 to accommodation space 11, in above-mentioned accommodation space 11, dispose first again and touch pin 30, second touches pin 50, this first touches pin 30, second touches pin 50 has the winding plate 33 that extends

breach

13,52, and this first touches pin 30 and is provided with first location-plate 31 in the same way to pushing mouthfuls 12, second location-plate 32, this first location-plate 31 has an axial region 311 and is formed with hold segment 121 pushes the space, second location-plate 32 is provided with a fixed part 321, this second touches 50 on pin and has a positioning section 51, and in accommodation space 11, be formed with the fixed interval of ccontaining positioning section 51, include one and be disposed at and push mouthfuls 12 and in the button 41 of pushing the space intrinsic displacement and be disposed at micromotion mechanisms in the housing 10 with spacer 14, pull and be provided with the contact chip 42 of fixed part 421 in above-mentioned axial region 311 and the other end in one end top, and one two ends be positioned the fixed part 321 of second location-plate 32 and contact chip 42 respectively, 421 and to be subjected to button 41 to press down with interlock contact chip 42 serve as that axle is displaced downwardly to second and touches the elastic parts 43 that pin 50 forms electric connections with axial region 311.

See also Fig. 5-1, shown in the 5-2, it is sensitive switch action schematic diagram of the present utility model, as shown in the figure: because metal first touches pin 30, the second winding position that touches pin 50 and micromotion mechanism will move down, to increase its electric contact and the spacing of pushing mouth 12, so can more meet the ESD test, mouthfuls 12 can be extended out a hold segment 121 and first location-plate 31 and be formed with and push the space in pushing of housing 10 again because of micromotion mechanism moves down, can allow button 41 when bottom offset presses elastic parts 43, can be stable in and push the space intrinsic displacement, so that not having the inclination and offset situation takes place, so can guarantee elastic parts 43 balanced power pressurizeds=be displaced downwardly to second with interlock contact chip 42 to touch pin 50 and form and electrically connect (shown in Fig. 5-2), and housing 10 corresponding contact chips 42 have an abutting part 15 in free state, also can guarantee contact chip 42 displacement stroke, influence the user so that can not cause 43 pairs of buttons 41 of elastic parts to apply excessive elastic force and push; Become people as for the manner of execution of micromotion mechanism and known, repeated no more with next.

Claims

1. a sensitive switch improved structure is characterized in that, described sensitive switch comprises:

One housing (10), has an accommodation space (11) in it, described accommodation space (11) has open side and two breach (13) that dispose a lid (20), and be provided with one in housing (10) and push mouthful (12), described push mouthful (12) are extended with a hold segment (121) to described accommodation space (11);

First touches pin (30), second touches pin (50), be to be disposed in the described accommodation space (11), and has the winding plate (33,52) that extends described breach (13), and described first touches pin (30) is provided with first location-plate (31), second location-plate (32) in the same way to described push mouthful (12), described first location-plate (31) has an axial region (311) and is formed with described hold segment (121) pushes the space, and described second location-plate (32) is provided with a fixed part (321);

One micromotion mechanism, include one be disposed at described push mouthful (12) and pull in the button of pushing the space intrinsic displacement (41), top, an end be provided with the contact chip (42) of fixed part (421) and described fixed part (321,421) that two ends are positioned described second location-plate (32) and described contact chip (42) respectively in described axial region (311) and the other end and pressed down and the described contact chip of interlock (42) by described button (41), with described axial region (311) is axle, is displaced downwardly to described second and touches the elastic parts (43) that pin (50) forms electric connection.

2. sensitive switch improved structure according to claim 1, it is characterized in that, described housing (10) and described lid (20) are provided with the fixing hole (16) and the fixed leg (22) of corresponding joint, and described lid (20) has the protuberance (21) that mouthful (12) are pushed in a described sealing.

3. sensitive switch improved structure according to claim 1, it is characterized in that, described second touches pin (50) has a positioning section (51), and on the inherent spacer of described accommodation space (11) (14), forms the fixed interval of ccontaining described positioning section (51).

4. sensitive switch improved structure according to claim 1 is characterized in that, the corresponding described contact chip of described housing (10) (42) has an abutting part (15) in free state.