CN105261506B - Push switch - Google Patents

Abstract

A kind of push switch,It includes insulating body,The contact terminal being immobilizated in insulating body,The movable contact and pressing piece being installed on above contact terminal,The contact terminal includes the first contact terminal,The second contact terminal spaced with the first contact terminal and positioned at first,The 3rd contact terminal between second contact terminal,The movable contact includes the main part and supportive body portion and the spaced elastic arm of contact terminal of arched surface,The center section that main part includes the engagement edge of both sides and arched upward,When forcing in pressing piece,Two engagement edges of main part are respectively with first,Second contact terminal connects,First,Second contact terminal turns on,Continue to exert a force,The center section of movable contact is connected with the 3rd contact terminal again,Now first,Second,3rd contact terminal all turns on,Remove external force,Switch off.

Description

Push switch

【Technical field】

The present invention relates to a kind of push switch, more particularly to two-stage pressing structure.

【Background technology】

With the rapid development of electronic product, functional requirement to product also more and more higher, first focus such as camera and shoot again This equipment can not meet consumer demand, what consumer pursued be it is more efficient more easily shoot, a such as key Formula snap, press to focus on, press again to take pictures for the first time, but with consumer to the volume requirement of electronic product increasingly Small, the design of part in product also develops toward small size always, and the present invention designs a kind of new small-sized two-stage pressing Switch, to meet customer demand.

【The content of the invention】

The technical problems to be solved by the invention are to provide a kind of small-sized push switch, realize two-stage pressing.

In order to solve the above technical problems, the technical scheme is that：A kind of push switch, it include insulating body, The contact terminal that is immobilizated in insulating body, the movable contact being installed on above contact terminal and pressing piece, the contact jaw Attached bag includes the first contact terminal, with spaced second contact terminal of the first contact terminal and positioned at first, second contact jaw The 3rd contact terminal between son, the movable contact include the main part and supportive body portion and contact terminal of arched surface Spaced elastic arm, the center section that main part includes the engagement edge of both sides and arched upward, when forcing in pressing piece, main body Two engagement edges in portion are connected with first, second contact terminal respectively, the conducting of first, second contact terminal, continue to exert a force, movably The center section of contact is connected with the 3rd contact terminal again, and now first, second, third contact terminal all turns on, and is removed outer Power, switch off.

Compared to prior art, push switch of the present invention can realize two-stage pressing and overall structure minimizes partially.

【Brief description of the drawings】

Fig. 1 is the stereogram of push switch of the present invention.

Fig. 2 is the optical cable of push switch of the present invention.

Fig. 3 is the exploded view that push switch of the present invention further decomposes on the basis of Fig. 2.

Fig. 4 is the complete explosive view of push switch of the present invention.

Fig. 5 is the sectional view in the direction along Fig. 1 A-A.

Fig. 6 is the sectional view in the direction along Fig. 1 A-A（After pressing for the first time）.

Fig. 7 is the sectional view in the direction along Fig. 1 A-A（After second presses）.

Fig. 8 is the operating distance of push switch of the present invention and the relation schematic diagram of pressing force.

【Primary clustering symbol description】

Push switch	100	Insulating body	10
				Host cavity	11	First step	12
Contact terminal	20	First contact terminal	21
				Second contact terminal	22	3rd contact terminal	23
Lug boss	230	Welding foot	24
				Movable contact	30	Main part	31
Engagement edge	310	Center section	311
				Elastic arm	32	Feel piece	40
Compression zone	41	Fluting	42
				Arc-shaped side	43	Straight flange	44
Dust cap	50	Pressing piece	60
				Second step	13

Following embodiment will combine above-mentioned accompanying drawing and further illustrate the present invention.

【Embodiment】

As shown in Figure 1 to Figure 3, a kind of push switch 100, it include substantially rectangular insulating body 10, one into Type is in the contact terminal 20 in insulating body 10, the movable contact being installed on above contact terminal 20 30, one feeling The thoughts and feelings piece 40 of two-part feel, it is sealed in the dust cap 50 of the whole upper surface of insulating body 10 and is adhered to dust cap 50 and hit exactly Between pressing piece 60.

As shown in figure 4, insulating body 10 is provided with a host cavity 11, the contact terminal 20 is contained in host cavity 11.Connect Contravention 20 includes the first contact terminal 21, with 21 spaced second contact terminal 22 of the first contact terminal and positioned at the First, the 3rd contact terminal 23 between the second contact terminal 21,22.First contact terminal 21 and the second contact terminal 22 relative to 3rd contact terminal 23 is symmetrical arranged, and each contact terminal 20 is designed with welding foot 24, and first, second contact terminal 21,22 is all Insulating body is extended beyond provided with a welding foot 24, and the 3rd contact terminal 23 includes the projection contacted with movable contact 30 Portion 230 and two welding foots 24 beyond insulating body 10 are symmetrically extended from lug boss 230, the two welding foots 24 are relative to projection Portion 230 is symmetrically extended.Aforementioned four welding foot 24 is distributed on four angles of insulating body 10 respectively to be used for push switch 100 are welded to outer member.

The elastic arm 32 that both sides of the movable contact 30 including main part 31 and main body 31 extend in the opposite direction, It is spaced a distance between elastic arm 32 and main part 31 and is extended in parallel with main part 31.Main part 31 includes being located at other two The center section 311 that the engagement edge 310 and arc of side arch upward.First step is provided with the host cavity 11 of the insulating body 10 12, first step 12 is located on the diagonal of insulating body 10, and first step 12 includes level table 120 and and level table 120 connected inclined-planes 121, elastic arm 32 is placed on first step 12, and the end of elastic arm 32 is as level table 120 On.The engagement edge 310 of movable contact 30 is arc, and positioned at the surface of first, second contact terminal 21,22.Movably The most I of contact 30 is fabricated onto, and the minimum range between two arc engagement edges is 2.3mm.It has been achieved in that push switch 100 miniaturization.

Thoughts and feelings piece 40 is covered on the top of movable contact 30, and is more than movable contact 30.Feeling piece 40 includes being pressurized Portion 41 and the fluting 42 positioned at the both sides of compression zone 41, the fluting enhance the elastic force of compression zone 41.Feeling piece 40 includes two Opposing arcuate side 43 and two relatively parallel straight flanges 44.When the movable contact 30 is minimum, between two arc-shaped sides 43 Distance is that the distance between 2.7mm, two straight flanges 44 is 2.3mm.It is additionally provided with the host cavity 11 of insulating body 10 and some is higher than The second step 13 of one step 12, and two arc-shaped sides 43 for feeling piece 40 are installed on second step 13.Second step 13 and One contact terminal 21 and the second contact terminal 22 are adjacent, and second step 13 is respectively positioned at first, second contact terminal 21,22 Both sides.

As shown in Figures 5 to 7, when pressing piece 60 is not affected by external pressure, movable contact 30 is spaced with contact terminal 20, Do not turned between first, second, third contact terminal 21,22,23, when forcing in pressing piece 60, the main body of movable contact 30 Lower deformation is connected the stress of both sides engagement edge 310 in portion 31 with first, second contact terminal 21,22 respectively backward, now first, Second contact terminal 21,22 turns on, and continues to press, and the center section 311 of main part 31 continues to deform upon, downwards deformation and the The lug boss 230 of three contact terminals 23 contacts, and now first, second, third contact terminal 21,22,23 all turns on.Remove outer Power, movable contact 30 are recovered origin-location, switched off.

It is the relation of the operating distance of the key switch of push switch 100 and pressing force in the present embodiment as shown in Figure 8 Schematic diagram.Abscissa represents operating distance, and ordinate represents pressing force.When pressing force reaches F1 by first peak value, the First, the second contact terminal 21,22 turns on, when pressing force reaches F2 by second peak value, first, second, third contact jaw Son 21,22,23 all turns on.

One embodiment of the present invention is the foregoing is only, is not all of or unique embodiment, this area is common Technical staff is the present invention by reading description of the invention any equivalent change for taking technical solution of the present invention Claim covered.

Claims (10)

1. a kind of push switch, it includes insulating body, the contact terminal being immobilizated in insulating body, is installed on contact terminal The movable contact and pressing piece of top, the contact terminal include the first contact terminal, are arranged at intervals with the first contact terminal The second contact terminal and the 3rd contact terminal between first, second contact terminal, it is characterised in that：It is described movably to connect Contact element, which includes the main part of arched surface and supportive body portion and the spaced elastic arm of contact terminal, main part, includes both sides Engagement edge and the center section arched upward, the elastic arm be provided with a pair and be respectively arranged at the phase for connecting the engagement edge To side on, the bearing of trends of two elastic arms is relative and only one end is connected to the side and the other end be free end, exerts a force When pressing piece, two engagement edges of main part are connected with first, second contact terminal respectively, and first, second contact terminal is led It is logical, continue to exert a force, the center section of movable contact is connected with the 3rd contact terminal again, now first, second, third contact jaw Son all turns on, and removes external force, switches off.

2. push switch as claimed in claim 1, it is characterised in that：The insulating body is provided with a host cavity, host cavity Interior to be provided with first step, the elastic arm is placed on first step.

3. push switch as claimed in claim 2, it is characterised in that：The first step include level table and with level The connected inclined-plane of table top, the end of elastic arm is placed on level table.

4. push switch as claimed in claim 1, it is characterised in that：First contact terminal and the second contact terminal phase It is symmetrical arranged for the 3rd contact terminal.

5. push switch as claimed in claim 1, it is characterised in that：3rd contact terminal includes and movable contact The lug boss of middle section contacts and two welding foots that insulating body is extended beyond from contact site, two welding of the 3rd contact terminal Pin is symmetrically extended relative to lug boss.

6. push switch as claimed in claim 1, it is characterised in that：First contact terminal and the second contact terminal are set respectively There is a welding foot for extending beyond insulating body.

7. push switch as claimed in claim 2, it is characterised in that：The push switch is also included to feel two sections The thoughts and feelings piece of formula feel, some second steps higher than first step are additionally provided with the host cavity of the insulating body, feel piece It is installed on second step.

8. push switch as claimed in claim 7, it is characterised in that：The thoughts and feelings piece is covered in above movable contact, Thoughts and feelings piece is provided with compression zone and the fluting positioned at compression zone both sides, strengthens the elastic force of compression zone.

9. push switch as claimed in claim 7, it is characterised in that：The second step and the first contact terminal and second Contact terminal is adjacent, and second step is respectively positioned at the both sides of the first contact terminal and the second contact terminal.

10. push switch as claimed in claim 1, it is characterised in that：The push switch is additionally provided with a dustproof sheet, prevents Dirt piece covers the upper surface of insulating body, and pressing piece is installed on the top of dustproof sheet.