CN2689430Y

CN2689430Y - Contacting switches

Info

Publication number: CN2689430Y
Application number: CN 200320123492
Authority: CN
Inventors: 梁良
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2003-12-19
Filing date: 2003-12-19
Publication date: 2005-03-30
Anticipated expiration: 2013-12-19

Abstract

The utility model provides a contacting switch, comprising a casing, a cover body assembled on the casing, a pushing body arranged in the casing and extended out of the cover body, a movable contact point arranged in the casing and a plurality of terminals clamped in the casing. The terminals have welding ends, at least one welding end is provided with a groove for holding welding flux. Through the above arrangement, when the contacting switch is welded on a circuit board through a surface welding technique, the contacting switch can prevent the welding flux flowing into the other lines of the circuit board along the welding ends to affect the functions of the electronic elements welded on the other lines of the circuit board.

Description

Touch switch

[technical field]

The utility model relates to a kind of touch switch, refers to a kind of touch switch that is used on the electronic installation especially.

[background technology]

The terminal that existing touch switch generally includes housing, press section and electrically connects with circuit board.The prior art relevant with the utility model please refer to United States Patent (USP) the 5th, 898, shown in No. 147.It discloses the combination of a kind of touch switch, comprising: housing, place pressing body in the housing receiving space, be immobilizated in the plurality of terminals in the housing.Wherein, an end of terminal is provided with fixed contact, and the other end is protruding and be connected with the external circuit plate from housing bottom, and fixed contact is provided with travelling contact.When pushing above-mentioned pressing body, travelling contact is contacted with fixed contact, thereby realize switching function.

Yet, when this touch switch combination was soldered on the circuit board by the surface soldered technology, capillarity took place easily, solder flux very easily climbs on the All other routes of circuit board along terminal, and then influence is welded on the function of the electronic component on the circuit board All other routes.

[utility model content]

The purpose of this utility model is to provide a kind of can prevent effectively that solder flux from climbing into the touch switch on the circuit board All other routes.

The purpose of this utility model is achieved through the following technical solutions: the utility model touch switch comprises housing, be assembled in lid on the housing, be contained in the housing and protrude in lid pressing body, be contained in travelling contact and some terminals that is immobilizated in the housing in the housing.This terminal has welding ends, and at least one welding ends is provided with groove.

Compared with prior art, the utility model touch switch is received the dress solder flux by the groove of being located on the welding ends, therefore when touch switch is soldered on the circuit board through the surface soldered technology, can prevent that solder flux from climbing on the circuit board All other routes along welding ends, thereby influence is welded on the function of the other electron component on the circuit board All other routes.

[description of drawings]

Fig. 1 is the three-dimensional combination figure of the utility model touch switch.

Fig. 2 is another angle stereogram of the utility model touch switch.

Fig. 3 is the three-dimensional exploded view of the utility model touch switch.

Fig. 4 is another angle three-dimensional exploded view of the utility model touch switch.

[embodiment]

Please refer to Fig. 1 to shown in Figure 4, the utility model touch switch 100 comprises housing 1, be assembled in lid 2 on the housing 1, be contained in the housing 1 and protrude in lid 2 pressing body 3, be contained in the travelling contact 6 in the housing 1 and be immobilizated in the first terminal 4 and second terminal 5 in the housing 1.

Housing 1 body that roughly is square comprises front surface 11, rear surface 12 and connects four sides 13 of forward and backward surperficial 11,12.Front surface 11 is concaved with a groove 14 backward.Four angles of front surface 11 are provided with four cylindrical portion 111.The middle of rear surface 12 is recessed, the both sides evagination.

Lid 2 has fixing arm 21 and vertical this flat part 22 to fixing arm 21 that connects of pair of parallel configuration.Each fixing arm 21 convexes with clamping part 211 to the inside, and this clamping part 211 is snapped on housing 1 rear surface 12.Above-mentioned flat part 22 is roughly rectangular, and its center has the circular hole 222 of accommodating pressing body 3, has four through holes 221 all around, and flat part 22 belows convex with dip portion (not label) downwards.These four through holes 221 be configured in four cylindrical portion, 111 corresponding positions on, be used to accommodate this cylindrical portion 111.

Pressing body 3 comprises rounded bottom 31, cylindrical boss 32 and is positioned at the press section 33 of protuberance 32 central authorities.

The first terminal 4 is provided with two and convexes with first fixed contact 411 on side-prominent first protuberance, 41, the first protuberance 41.Second terminal 5 roughly is " T " word shape, comprises second protuberance 51 with circular second fixed contact 511.The first terminal 4 and second terminal 5 all have first connecting portion 42, second connecting portion 52 in its arranged outside.Connecting portion 42,52 is taken up in order of priority and is convexed with short first top 421, second top 521 and long first welding ends 422, second welding ends 522.The all roughly rectangular shape of this first top 421, second top 521 and first welding ends 422, second welding ends 522 is lateral buckling backward." V " shape first groove 4221, second groove 5221 are set respectively on the welding ends 422,522.

During assembling, first, second terminal 4,5 is immobilizated in the housing 1.Second protuberance 51 of second terminal 5 is embedded between first protuberance 41 of the first terminal 4.The welding ends 422,522 of connecting portion 42,52 extends housing 1 rear surface 12 respectively.Pressing body 3 places in the housing 1, and its protuberance 32 is outstanding forward by groove 14.Place metal vaulted travelling contact 6 between above-mentioned first, second terminal 4,5 and the pressing body 3.The edge part 61 of travelling contact 6 places on first fixed contact 411 of the first terminal 4,33 rears, press section of pressing body 3 are close to by the portion 62 that arches upward of central authorities, and realize itself and the contacting of second fixed contact 511, thereby electrically conducting between the realization the first terminal 4 and second terminal 5 with compressing of press section 33.Lid 2 is immobilizated on the housing 1, and fixing arm 21 is coated on outside the side 13 of pair of parallel configuration of housing 1, and two clamping parts 211 are snapped in respectively on the rear surface 12 of housing 1.And the protuberance 32 of the cylindrical portion 111 on the housing 1, pressing body 3 stretches out in the through hole 221 of lid 2, circular hole 222 respectively.

During use; touch switch 100 is soldered on the circuit board 7 by the surface soldered technology; when capillarity appears in welding; solder flux just can be climbed to circuit board 7 along the welding ends 422,522 of first, second connecting portion 42,52 and be stretched; but be loaded on wherein when receiving when being arranged at the groove 4221,5221 on the welding ends 422,522, thereby protected the electronic component (not label) on the All other routes that are soldered to circuit board 7 to be without prejudice.

Claims

1. touch switch, comprise housing, be assembled in lid on the housing, be contained in travelling contact in the housing, be contained in the housing and a distal process for the pressing body of housing and be contained in plurality of terminals in the housing, this terminal has welding ends, it is characterized in that: at least one welding ends is provided with groove.

2. touch switch according to claim 1 is characterized in that: described housing central fovea is provided with groove, and has some cylindrical portion on four angles.

3. touch switch according to claim 1 is characterized in that: described lid has pair of parallel fixing arm and vertical this flat part to the fixing arm that connects.

4. touch switch according to claim 3 is characterized in that: all have clamping part on the described a pair of fixing arm.

5. touch switch according to claim 1 is characterized in that: described pressing body comprises rounded bottom, cylindrical boss and is positioned at the press section of protuberance.

6. touch switch according to claim 1 is characterized in that: have connecting portion on the described terminal, described welding ends bends backward from the rectangular shape of connecting portion.

7. touch switch according to claim 1 is characterized in that: described groove is roughly V-shaped.