CN201072724Y

CN201072724Y - Pushbutton switch

Info

Publication number: CN201072724Y
Application number: CNU200720114522XU
Authority: CN
Inventors: 黄忠华; 田叶青
Original assignee: CHANGCHENG JINGGONG INDUSTRY Co Ltd NINGBO
Current assignee: CHANGCHENG JINGGONG INDUSTRY Co Ltd NINGBO
Priority date: 2007-08-31
Filing date: 2007-08-31
Publication date: 2008-06-11
Anticipated expiration: 2017-08-31

Abstract

A press button switch is provided, which comprises a press button, at least a spring piece which can change the position of the press button to realize the on and off of the electricity and a base for arranging the spring piece. The utility model is characterized in that: the two ends of the press button are provided with a returning spring, the bottom is provided with an element rest part projected downward, and the spring piece comprises a static contacting piece which is arranged on the base and exposes on the surface of the base; a pair of first dynamic electricity contacting piece which is uncontacted with the static contacting piece and is contacted with static connecting piece when receiving force; the first end is fixed on the base and the second end is a free end without stress; and a pair of second dynamic electricity contacting piece which is uncontacted with the static contacting piece and is contacted with the static contacting piece when receiving force; the first end is fixed on the base corresponding to the first dynamic electricity contacting piece, and the second end is a free end without stress. Compared with the prior art, the utility model has the advantages of simple and rational structure, small volume and sensitive response.

Description

A kind of push-button switch

Technical field

The utility model relates to a kind of push-button switch, relates in particular to a kind of two-way push-button switch that can make sense of current conversion between positive and negative.

Background technology

Realize the rotating of motor, generally in circuit, all design the bidirectional switch that a kind of sense of current can just be sowed distrust among one's enemies conversion, also there are two independent independent switches of employing to realize this function, clearly circuit arrangement can bother more, as Chinese utility model: ZL200520014295.4, adopt two independently switch realize the two-way of electric current, and then drive motors rotating.

Existing bidirectional switch ubiquity internal structure design is complicated, assembling inconvenience, the common fault that cost is higher is as adopting double-point double-throw switch, with reference to Chinese utility model patent: ZL200520074217.3, adopt double-point double-throw switch to realize the rotating of motor in this patent, when being installed to this switch on mini-plant or the instrument, volume is excessive but in general,, cost is higher simultaneously, not too is suitable for promoting.

The utility model content

Technical problem to be solved in the utility model be provide at the above-mentioned state of the art a kind of simple in structure, volume is less, the push-button switch of low production cost.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of push-button switch, include button, change the matrix that button positions can realize at least one spring leaf of electric break-make and be used to be provided with aforementioned spring leaf, aforesaid button two ends are provided with back-moving spring, the bottom is provided with the convex rib part of downward protuberance, and aforesaid spring leaf comprises

A pair of static contact is located on the described matrix and is exposed to matrix surface;

The first moving electric contact point that does not a pair ofly contact with the static contact at ordinary times, contacts with the static contact when stressed, its first end is fixed on the matrix, and second end is no stressed free end; And

The second moving electric contact point that does not a pair ofly contact with the static contact at ordinary times, contacts with the static contact when stressed, its first end is fixed on the matrix, and relative with the first moving electric contact point, and second end is no stressed free end,

Under the shifting state, second end of its convex rib part extruding first moving electric contact point also made this second end contact energising with the static contact before button was in; Button is under the retrude, and second end of its convex rib part extruding second moving electric contact point also makes this second end contact energising with the static contact.Can change motor steering, and have only under external force, switch is just switched on, and has avoided some misoperations to cause device damage.

Described static contact is embedded in the matrix groove, and is the arc shape that arches upward, and is convenient to the contact energising.

Described first dynamic current contact piece and second dynamic current contact piece all roughly are " Z " type, and the bottom then is that first end is fixed on the matrix, and the top then is second end, and the second end end has the first downward extension and second extension respectively, are convenient to the contact energising.

Described button end face middle part is provided with the projection of being convenient to the application of force.It is more convenient that button is passed.

Compared with prior art, advantage of the present utility model is: adopt this push-button switch, can change motor steering, be particularly suitable for using on the drive motors on the electric wrench, and have only under external force, switch is just switched on, and has avoided some misoperations to cause device damage; Overall structure is simple, is quick on the draw, and volume is less, and assembling is quick, and low production cost is easy to utilize.

Description of drawings

Fig. 1 is an embodiment split assembly drawing.

Fig. 2 is the mounting structure schematic diagram.

Fig. 3 is the switching circuit schematic diagram.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Embodiment: with reference to illustrated in figures 1 and 2, switch 4 in the present embodiment is a forward-reverse switch, switch includes button 41, a pair of static contact 43, a pair of first moving electric contact point 44, a pair of second moving electric contact point 45 and the matrix 42, button 41 two ends are extended with protuberance 412, be with back-moving spring 46 on the protuberance 412, the other end of back-moving spring 46 and the housing of installing component offset (nothing shows among the figure), button can move around in housing through-hole, the bottom is provided with the convex rib part 411 of downward protuberance, and the end face middle part is provided with the projection 413 of being convenient to the application of force.

A pair of static contact 43 is embedded in matrix first groove 421, and is and arches upward arc shape and be exposed to matrix 42 surfaces.

The first moving electric contact point 44 roughly is " Z " type, the bottom then is that first end 441 is fixed on second groove 423 of matrix, second end 442 is located at the top and is no stressed free end, its second end, 442 ends have when the moving electric contact point of lower extension 443, the first 44 is flat and do not contact with static contact 43, contact with static contact 43 when stressed.

The second moving electric contact point 45 roughly is " Z " type, the bottom then is that first end 451 is fixed on the 3rd groove 422 of matrix, second end 452 is located at the top and is no stressed free end, it is relative with the first moving electric contact point 44, second end, 442 ends have when the moving electric contact point of lower extension 453, the second 45 is flat and do not contact with static contact 43, contact with static contact 43 when stressed.

Under the shifting state, second end 442 of its convex rib part 411 extruding first moving electric contact point also made this second end 442 contact energising with static contact 43 before button 41 was in; Button 41 is under the retrude, and second end 452 of its convex rib part 411 extruding second moving electric contact point also makes this second end 452 contact energising with static contact 43.Button 41 does not stress under the situation, and circuit is in off state.

Fig. 3 is the comparatively preferred circuit theory diagrams of present embodiment, button 41 be in reach or after when moving, motor 101 turns to just in time opposite.Certainly can also adopt other circuit layout, install and to realize that motor 101 rotatings just can adopt behind the switch of present embodiment.

Claims

1. push-button switch, include button (41), change the matrix (42) that button (41) position can be realized at least one spring leaf (43,44,45) of electric break-make and is used to be provided with aforementioned spring leaf (43,44,45), it is characterized in that aforesaid button (41) two ends are provided with back-moving spring (46), the bottom is provided with the convex rib part (411) of downward protuberance, and aforesaid spring leaf (43,44,45) comprises

A pair of static contact (43) is located at described matrix (42) and is gone up and be exposed to matrix (101) surface;

The first moving electric contact point (44) that does not a pair ofly contact with static contact (43) at ordinary times, contacts with static contact (43) when stressed, its first end (441) is fixed on the matrix (42), and second end (442) is no stressed free end; And

The second moving electric contact point (45) that does not a pair ofly contact with static contact (43) at ordinary times, contacts with static contact (43) when stressed, its first end (451) is fixed on the matrix (42), and relative with the first moving electric contact point (44), second end (452) is no stressed free end

Under the shifting state, second end (442) of its convex rib part (411) extruding first moving electric contact point also made this second end (442) contact energising with static contact (43) before button (41) was in; Button (41) is under the retrude, and second end (452) of its convex rib part (411) extruding second moving electric contact point also makes this second end (452) contact energising with static contact (43).

2. push-button switch according to claim 1 is characterized in that described static contact (43) is embedded in the matrix groove (421), and is the arc shape that arches upward.

3. push-button switch according to claim 1, it is characterized in that described first dynamic current contact piece (44) and second moving electrically contact (45) sheet and all roughly is " Z " type, the bottom then is that first end (441,451) is fixed on the matrix (42), the top then is second end (442,452), and second end (442,452) end has downward first extension (443) and second extension (453) respectively.

4. push-button switch according to claim 1 is characterized in that described button (41) end face middle part is provided with the projection (413) of being convenient to the application of force.