CN105261506A

CN105261506A - Pressing type switch

Info

Publication number: CN105261506A
Application number: CN201410332609.9A
Authority: CN
Inventors: 中濑雄章; 孙亮
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2014-07-14
Filing date: 2014-07-14
Publication date: 2016-01-20
Anticipated expiration: 2034-07-14
Also published as: CN105261506B; JP2016021381A

Abstract

The invention discloses a pressing type switch. The pressing type switch comprises an insulating body, a contact terminal fixedly held in the insulating body, and a movable contact part and a pressing part mounted above the contact terminal; the contact terminal comprises a first contact terminal, a second contact terminal spaced from the first contact terminal, and a third contact terminal positioned between the first contact terminal and the second contact terminal; the movable contact part comprises a main body part with an arched curved surface, and elastic arms for supporting the main body part and spaced from the contact terminal; the main body part comprises contact edges on two sides and an arched middle part; when force is applied to the pressing part, two contact edges of the main body part are connected with the first contact terminal and the second contact terminal; the first contact terminal and the second contact terminal are switched on to continue to apply force; then the middle part of the movable contact part is connected with the third contact terminal again, at the moment, the first contact terminal, the second contact terminal and the third contact terminal are all switched on, and when the external force is removed, the switch is open.

Description

Push switch

[technical field]

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

[background technology]

Along with the develop rapidly of electronic product, also more and more higher to the functional requirement of product, as the camera this equipment taken again of first focusing can not meet consumer demand, what consumer pursued is more efficiently take more easily, as one-touch snap, first time presses down as focusing on, again press down as taking pictures, but along with the volume requirement of consumer to electronic product is more and more less, design of part in product is also developing toward little size always, the present invention designs a kind of small-sized two-stage pressing switch newly, to meet consumer's requirement.

[summary of the invention]

Technical problem to be solved by this invention is to provide a kind of small-sized push switch, realizes two-stage pressing.

For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of push switch, it comprises insulating body, be immobilizated in the contact terminal in insulating body, be installed on the movable contact above contact terminal and pressing piece, described contact terminal comprises the first contact terminal, with spaced second contact terminal of the first contact terminal and be positioned at first, the 3rd contact terminal between second contact terminal, described movable contact comprises the main part of arched surface and supportive body portion and the spaced elastic arm of contact terminal, the engagement edge that main part comprises both sides and the mid portion 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 conducting, continue force, the mid portion of movable contact is connected with the 3rd contact terminal again, now first, second, 3rd contact terminal all conductings, remove external force, switch disconnects.

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

[accompanying drawing explanation]

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

Fig. 2 is the decomposed figure of push switch of the present invention.

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

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

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

Fig. 6 is the cutaway view (after first time pressing) along direction in Figure 1A-A.

Fig. 7 is the cutaway view (after second time pressing) along direction in Figure 1A-A.

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	Mid portion	311
				Elastic arm	32	Thoughts and feelings sheet	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 further illustrate the present invention in conjunction with above-mentioned accompanying drawing.

[embodiment]

As shown in Figure 1 to Figure 3, a kind of push switch 100, it comprise the insulating body 10 being roughly rectangle, the contact terminal 20 be shaped in insulating body 10, be installed on movable contact 30, above contact terminal 20 in order to feel two-part feel thoughts and feelings sheet 40, be sealed in the dust cap 50 of whole insulating body 10 upper surface and adhere to the pressing piece 60 of dust cap 50 middle.

As shown in Figure 4, insulating body 10 is provided with a host cavity 11, and described contact terminal 20 is contained in host cavity 11.Contact terminal 20 comprises the first contact terminal 21 and spaced second contact terminal 22 of the first contact terminal 21 and the 3rd contact terminal 23 between first, second contact terminal 21,22.First contact terminal 21 and the second contact terminal 22 are symmetrical arranged relative to the 3rd contact terminal 23, each contact terminal 20 is provided with welding foot 24, first, second contact terminal 21,22 is all provided with a welding foot 24 and extends beyond insulating body, and the 3rd contact terminal 23 comprises the lug boss 230 contacted with movable contact 30 and two welding foots 24 extending beyond insulating body 10 from lug boss 230 symmetry, the extension symmetrical relative to lug boss 230 of these two welding foots 24.For push switch 100 is welded to outer member on four angles that above-mentioned four welding foots 24 are distributed in insulating body 10 respectively.

The elastic arm 32 that the both sides that movable contact 30 comprises main part 31 and main body 31 extend in the opposite direction, is spaced a distance between elastic arm 32 and main part 31 and extends in parallel with main part 31.Main part 31 comprises the mid portion 311 that the engagement edge 310 of being located at other both sides and arc arch upward.First step 12 is provided with in the host cavity 11 of described insulating body 10, first step 12 is positioned on the diagonal of insulating body 10, the inclined-plane 121 that first step 12 comprises level table 120 and is connected with level table 120, elastic arm 32 is placed on first step 12, and the end of elastic arm 32 is as on level table 120.The engagement edge 310 of movable contact 30 is arc, and is positioned at directly over first, second contact terminal 21,22.The most I of movable contact 30 is fabricated onto, and the minimum range between two arc engagement edges is 2.3mm.Achieve the miniaturization of push switch 100 like this.

Thoughts and feelings sheet 40 is covered on the top of movable contact 30, and is greater than movable contact 30.Thoughts and feelings sheet 40 comprises compression zone 41 and is positioned at the fluting 42 of compression zone 41 both sides, and this fluting enhances the elastic force of compression zone 41.Thoughts and feelings sheet 40 comprises the opposing arcuate limit 43 of two and two opposing parallel straight flanges 44.When described movable contact 30 is minimum, the distance between two arc-shaped sides 43 is 2.7mm, and the distance between two straight flanges 44 is 2.3mm.Also be provided with some second steps 13 higher than first step 12 in the host cavity 11 of insulating body 10, and two arc-shaped sides 43 of feeling sheet 40 are installed on second step 13.Second step 13 is adjacent with the second contact terminal 22 with the first contact terminal 21, and second step 13 lays respectively at the both sides of first, second contact terminal 21,22.

As shown in Figures 5 to 7, when pressing piece 60 is not subject to external pressure, movable contact 30 and contact terminal 20 interval, first, second, 3rd contact terminal 21, 22, non-conducting between 23, when forcing in pressing piece 60, the stressed backward lower distortion of both sides engagement edge 310 of movable contact 30 main part 31 is respectively with first, second contact terminal 21, 22 connect, now first, second contact terminal 21, 22 conductings, continue to exert pressure, the mid portion 311 of main part 31 continues deformation occurs, downward distortion contacts with the lug boss 230 of the 3rd contact terminal 23, now first, second, 3rd contact terminal 21, 22, 23 whole conductings.Remove external force, movable contact 30 recovers origin-location, and switch disconnects.

The operating distance of the key switch of push switch 100 in the present embodiment and the relation schematic diagram of pressing force as shown in Figure 8.Abscissa represents operating distance, and ordinate represents pressing force.When pressing force reaches F1 through first peak value, first, second contact terminal 21,22 conducting, when pressing force reaches F2 through second peak value, first, second, third contact terminal 21,22,23 all conductings.

The foregoing is only one embodiment of the present invention, it not whole or unique execution mode, the change of those of ordinary skill in the art by reading specification of the present invention to any equivalence that technical solution of the present invention is taked, is claim of the present invention and contains.

Claims

1. a push switch, it comprises insulating body, be immobilizated in the contact terminal in insulating body, be installed on the movable contact above contact terminal and pressing piece, described contact terminal comprises the first contact terminal, with spaced second contact terminal of the first contact terminal and be positioned at first, the 3rd contact terminal between second contact terminal, it is characterized in that: described movable contact comprises the main part of arched surface and supportive body portion and the spaced elastic arm of contact terminal, the engagement edge that main part comprises both sides and the mid portion 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 conducting, continue force, the mid portion of movable contact is connected with the 3rd contact terminal again, now first, second, 3rd contact terminal all conductings, remove external force, switch disconnects.

2. push switch as claimed in claim 1, it is characterized in that: described insulating body is provided with a host cavity, is provided with first step in host cavity, described elastic arm is placed on first step.

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

4. push switch as claimed in claim 1, is characterized in that: described first contact terminal and the second contact terminal are symmetrical arranged relative to the 3rd contact terminal.

5. push switch as claimed in claim 1, it is characterized in that: described 3rd contact terminal comprises and the lug boss of movable contact middle section contacts and two welding foots extending beyond insulating body from contact site, the two welding foots extension symmetrical relative to lug boss of the 3rd contact terminal.

6. push switch as claimed in claim 1, is characterized in that: the first contact terminal and the second contact terminal are respectively equipped with the welding foot that extends beyond insulating body.

7. push switch as claimed in claim 2, it is characterized in that: described push switch also comprises feeling the thoughts and feelings sheet of two-part feel, also be provided with some second steps higher than first step in the host cavity of described insulating body, thoughts and feelings sheet is installed on second step.

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

9. push switch as claimed in claim 7, is characterized in that: described second step is adjacent with the second contact terminal with the first contact terminal, and second step lays respectively at the both sides of the first contact terminal and the second contact terminal.

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