CN1101590C

CN1101590C - Switch

Info

Publication number: CN1101590C
Application number: CN98102384A
Authority: CN
Inventors: 我妻透; 板桥隆幸
Original assignee: Alps Electric Co Ltd
Current assignee: Alps Alpine Co Ltd
Priority date: 1997-06-10
Filing date: 1998-06-10
Publication date: 2003-02-12
Anticipated expiration: 2018-06-10
Also published as: JPH113627A; CN1201993A; TW369657B; KR19990006809A; MY129496A; KR100322774B1

Abstract

To simplify and facilitate the assembling work, and improve an assembling performance, and lower the cost by providing a cylindrical guide unit in a casing, and fitting an operation unit to the guide unit freely to be moved, and closing an open part of the casing with a flat plate-like cover. A contact 5a of a movable contact piece 5 is inserted from an open part side of a cylindrical body 1, in which a fixed contact is embedded, into a recessed art 1e, and while a projecting piece 5c of the movable contact piece 5 is fitted in a recessed part 1k, and the movable contact piece 5 is placed on an end surface 1c. Continuously, a square rod 6a of an operation unit 6 is inserted into a hole 1g of a guide unit 1f, and while a working part 6c of the operation unit 6 is fitted in a notch groove 1h of the guide unit 1f and a groove 1j of a side wall 1b. Finally, the guide unit 1f is inserted into a hole 7a of a cover 7, and in this condition, a projecting part 7c is pushed against the elasticity of a lock arm 1n, so that the projecting part 7c is locked with the lock part 1m, and the cover 7 is thereby fitting to the casing 1.

Description

Switch

Technical field

The present invention relates to be applicable to the push switch of following detecting sensor, this detecting sensor was used for the having or not of the cassette of cassette tape recorder, or having or not etc. of the disk in the magnetic recorder/reproducer detected.

Background technology

As Figure 14～16, the push switch that uses in the existing cassette tape recorder etc. comprises the boxed frame 50 that the profiled part by the insulating material of synthetic resin constitutes, recess 50a is arranged at the protuberance 50c on the 50b of side, is embedded in the fixed contact 51 in the framework 50.

In addition, the lid 52 that is made of the profiled part of synthetic resin comprises the tubular guide part 52b that relative plate-like portion 52a is outstanding upward, relatively a plurality of elastic arm 52c of extending downwards of the side of plate-like portion 52a.

In addition, the mode that this lid 52 covers with the peristome with framework 50 is arranged on the framework 50, and above-mentioned plate-like portion 52a is arranged on the end face 50d of framework 50, and elastic arm 52c is fixed on the protuberance 50c of framework 50 in addition.

Also have, in the hole that operating portion 53 inserts among the above-mentioned guide part 52b, this operating portion 53 is provided with in a movable manner, in addition, the movable contact flat 54 of the U font that is formed by metallic plate is received in the recess 50a of framework 50, by the helical spring 55 that is arranged in this recess 50a, this movable contact flat 54 is in the state that generally is pressed against on the operating portion 53.

In addition, the assembling of the push switch of Gou Chenging is so in the manner described above, at first, inserts helical spring 55 successively, movable contact flat 54 in the inside of the recess 50a of framework 50.

Then, make and cover 52 and be in the state of turning over, at this state operating portion 53 is passed hole among the guide part 52b, make afterwards and cover 52 recovery reset conditions, make the end face 50d of the plate-like portion 52a that covers in 52 and framework 50 chimeric, elasticity buttocks 52c is fixed on the protuberance 50c of framework 50, just finishes the assembling of switch this moment.

In addition, in this switch, when under the flexible situation of opposing helical spring 55, when operating portion 53 was pressed down, this operating portion 53, moved downwards as guiding with guide part 52b, movable contact flat 54 moves downwards, and movable contact flat 54 contacts with fixed contact 51, thus switch opens.

In addition, when the pressing force of releasing operation portion 53, under the flexible effect of helical spring 55, movable contact flat 54, operating portion 53 recover reset conditions, and movable contact flat 54 is thrown off with fixed contact 51, thereby switch cuts out.

In the manner described above, by the pressing operation of operating portion 53, just realize the operation of switch.

Above-mentioned switch is installed on the printed circuit mainboard 56 by the mounted on surface mode, and still, as shown in figure 17, this installation is conductor 57 1 sides that the bottom surface of framework 50 are arranged at printed circuit mainboard 56.

Then, the bottom surface is plane fixed contact 51 is put on the conductor 57, to its coating paste soldering material 58.

Then, when at above-mentioned state, printed circuit mainboard 56 is passed through the heating furnace (not shown), paste soldering material 58 just melts, and fixed contact 51 just is welded on the conductor 57.

Existing switch has following problems, promptly covers 52 because the tubular guide part 52b that is used for that operating portion 53 is led is arranged at, like this when assembling, will cover turn on 52 after, be not operating portion 53 can not be inserted, but its assembling is pretty troublesome, assembling is poor, and cost is higher.

In addition, because the elastic arm 52c that lid 52 is provided with guide part 52b and usefulness is installed will carry out processing and forming to covering 52 like this, thereby cost is higher.

In addition, also have following problems, promptly movable contact flat 54 and helical spring 55 are essential, and number of components is more like this, and cost is higher, and in addition, the assembling number of times is more, thereby cost is higher.

Have again, also have following problems, promptly because when switch being installed on the printed circuit mainboard 56, only adopt paste soldering material 58 to support, like this when printed circuit mainboard 56 is shifted to heating furnace, because of vibration, switch can depart from assigned position, thereby causes failure welding.

In addition, also has following problems, promptly, switch only adopts welding manner on the printed circuit mainboard 56 owing to being installed on, when using being assembled into assembly like this, operating portion 53 is being operated repeatedly, or operating portion 53 applied the occasion of excessive operating physical force, and can produce scolding tin and peel off, damaged problem takes place.

Summary of the invention

The 1st technical solution that is used to address the above problem is to constitute like this, the tubular guide part that becomes one with this framework is set on the framework that the insulating material by synthetic resin constitutes, with above-mentioned guide part as guiding, the operating portion that inserts in the above-mentioned guide part is set by mode movably, in addition, according to the mode of the peristome that covers said frame, flat lid is arranged on the end face of said frame.

In addition, the 2nd technical solution is to constitute like this, in the mode that becomes one with said frame following a plurality of fixedly arm is set, these fixedly arm be provided with fixed part, and have elasticity, above-mentioned lid is arranged on the said frame by these a plurality of fixedly buttocks.

Also have, the 3rd technical solution is to constitute like this, and switch of the present invention comprises the framework that the insulating material by synthetic resin constitutes. this framework has recess and tubular guide part; Operating portion, this operating portion have the operating member that is provided with along the direction vertical with axial maintenance; By the movable contact flat that metallic plate forms, this movable contact flat has contact site and stationary body, and it is Font; Be arranged at the fixed contact in the said frame; Flat lid.Aforesaid operations portion inserts above-mentioned guide part,, is provided with by mode movably as guiding with this guide part, and in addition, the stationary body of above-mentioned movable contact flat is arranged on the end face of said frame, and above-mentioned contact site is received in the recess of said frame.The mode that above-mentioned lid covers according to the peristome with said frame is arranged on the above-mentioned end face, the stationary body of above-mentioned movable contact flat is held between above-mentioned lid and the said frame, by moving of aforesaid operations portion, above-mentioned operating member makes above-mentioned movable contact flat motion, thereby the contact site of above-mentioned movable contact flat is realized contact and separated with the said fixing contact.

In addition, the 4th technical solution is to constitute like this, in the mode that becomes one with said frame following a plurality of fixedly arm is set, these fixedly buttocks be provided with fixed part, and have elasticity, above-mentioned lid is arranged on the said frame by these a plurality of fixedly buttocks.

Also have, the 5th technical solution is to constitute like this, and the end face of said frame is provided with recess, and the tab and the above-mentioned recess that are arranged on the stationary body in the above-mentioned movable contact flat are chimeric.

In addition, the 6th technical solution is to constitute like this, is provided with fixedly buttocks in the bottom of the framework that is made of insulating material such as synthetic resin, this fixedly arm have teat and fixed part, and have elasticity.

In addition, the 7th technical solution is to constitute like this, and switch of the present invention comprises the framework that the insulating material by synthetic resin constitutes, and this framework has recess and tubular guide part; Operating portion, this operating portion have the operating member that is provided with along the direction vertical with axial maintenance; By the movable contact flat that metallic plate forms, this movable contact flat has contact site and stationary body, and it is Font; Be arranged at the fixed contact in the said frame; Flat lid.Aforesaid operations portion inserts above-mentioned guide part, with this guide part as guiding, be provided with by mode movably, in addition, the stationary body of above-mentioned movable contact flat is arranged on the end face of said frame, above-mentioned contact site is received in the recess of said frame, the mode that above-mentioned lid covers according to the peristome with said frame is arranged on the above-mentioned end face, the stationary body of above-mentioned movable contact flat is held between above-mentioned lid and the said frame, by moving of aforesaid operations portion, above-mentioned operating member makes above-mentioned movable contact flat motion, thereby the contact site of above-mentioned movable contact flat is realized contact and separated with the said fixing contact.

Description of drawings

Fig. 1 is the elevation of switch of the present invention;

Fig. 2 is the side view of switch of the present invention;

Fig. 3 is the plane graph of switch of the present invention;

Fig. 4 is the partial, exploded perspective view of switch of the present invention;

Fig. 5 is the profile along the major part of A-A line among Fig. 3;

Fig. 6 is the profile along the major part of B-B line among Fig. 3;

Fig. 7 is the profile along the major part of C-C line among Fig. 3;

Fig. 8 is the plane graph after in Fig. 3 lid being removed;

Fig. 9 is the plane graph after in Fig. 8 operating portion being removed;

Figure 10 is the plane graph after in Fig. 9 movable contact flat being removed;

Figure 11 is the sectional plain-view drawing of the major part of the fixed contact arrangement of expression switch of the present invention;

Figure 12 is the key diagram of the action of switch of the present invention;

Figure 13 is arranged at the profile of the major part of the state on the printed circuit mainboard for expression switch of the present invention;

Figure 14 is the profile of existing switch;

Figure 15 is the side view of the broken section of existing switch;

Figure 16 is the profile of the major part of existing switch;

Figure 17 is arranged at the profile of the major part of the state on the printed circuit mainboard for existing switch.

Embodiment

The switch of the present invention that pair is used for cassette tape recorder etc. according to Fig. 1～12 is described below, Fig. 1 is the elevation of switch of the present invention, Fig. 2 is the side view of switch of the present invention, Fig. 3 is the plane graph of switch of the present invention, Fig. 4 is the partial, exploded perspective view of switch of the present invention, Fig. 5 is the profile along the major part of A-A line among Fig. 3, Fig. 6 is the profile along the major part of B-B line among Fig. 3, Fig. 7 is the profile along the major part of C-C line among Fig. 3, Fig. 8 is the plane graph after in Fig. 3 lid being removed, Fig. 9 is the plane graph after in Fig. 8 operating portion being removed, Figure 10 is the plane graph after in Fig. 9 movable contact flat being removed, Figure 11 is the plane graph of analysing and observe of the major part of the fixed contact arrangement of expression switch of the present invention, and Figure 12 is the key diagram of the action of switch of the present invention.

Above-mentioned switch of the present invention shown in the drawings is for carrying out the switchette of mounted on surface, it is a press type, shown in Fig. 1～12, the boxed frame 1 that is made of the profiled part of insulating material such as synthetic resin comprises bottom 1a, the sidewall 1b that the outer rim of relative this bottom 1a is extended upward, be positioned at the end face 1c at sidewall 1b top, be arranged in the part of surrounding by sidewall 1b, 2 recess 1e that form by next door 1d, 2 tubular guide part 1f, this guide part 1f is adjacent with this recess 1e, the peristome of recess 1e is outstanding upward relatively, is formed at 2 relative sidewall 1b vicinity.

In addition, above-mentioned 2 tubulars that guide part 1f is rectangular, heart portion is provided with rectangular opening 1g therein, is provided with the grooving 1h that is communicated with above-mentioned hole 1g and recess 1e on the outer wall of its part.

In addition, the grooving 1h that is arranged at respectively on above-mentioned 2 guide part 1f is communicated with corresponding recess 1e among 2 recess 1e, in addition, is provided with groove 1j at the inner face of the sidewall 1b relative with grooving 1h.

In addition, said frame 1 also has the recess 1k on the end face 1c that is arranged at guide part 1f vicinity, be arranged at a pair of protuberance 1s on the end face 1c, a plurality of rubber-likes are arm 1n fixedly, these buttocks 1n is arranged at respectively on the relative sidewall 1b in the outstanding upward mode of opposing end surface 1c, its front end is provided with fixed part 1m, be arranged at the teat 1p on the outside of bottom 1a in outstanding mode, a plurality of rubber-likes are arm 1r fixedly, these arms 1r all is arranged at the outside of bottom 1a in outstanding mode, be provided with fixed part 1q at its front end.

As Fig. 7, shown in 11,12, on the 1a of the bottom of said frame 1, a plurality of fixed contacts 2 are installed in the mode of imbedding, 3,4, the 2a of its contact portion, 3a, 4a exposes in recess 1e inside, portion of

terminal

2b, 3b, the lower surface of the bottom 1a of 4b and framework 1 is in same plane, and is arranged at the outside of framework 1 in outstanding mode.

Also have, form by metallic plates such as copper One end font, rubber-like movable contact flat 5 is provided with contact site 5a, and its other end is provided with tabular stationary body 5b, in addition, is provided with crooked a pair of lug 5c downwards in the both sides of this stationary body 5b.In addition, in this movable contact flat 5, above-mentioned lug 5c is embedded among the recess 1k on the end face 1c that is arranged at framework 1, and stationary body 5b is arranged on the end face 1c, and contact site 5a is received in the inside of recess 1e.

In the manner described above, 2 recess 1e inside, movable contact flat 5 is in opposite installment state, and in addition, one in 2 movable contact flats 5 can contact with 3 with fixed contact 2 and separates, and another can contact with 4 with fixed contact 3 and separates.

In addition, particularly as shown in Figure 4, the operating portion 6 that is made of the profiled part of the insulating material of synthetic resin comprises the 6a of flat column portion, along the 6a of flat column portion axially, become integrally formed cylindrical portion 6b with the 6a of this flat column portion, along with the axial perpendicular direction of the 6a of flat column portion, become integrally formed operating member 6c with the 6a of flat column portion.

In addition, in this operating portion 6, the 6a of flat column portion inserts among the hole 1g of pilot hole 1f, and operating member 6c is according to being provided with the chimeric mode of grooving 1h and groove 1j, operating portion 6 can guide part 1f as guiding, move along the vertical direction.

Also have, particularly as Fig. 5, shown in 7, operating member 6c in the operating portion 6 is in the state with the top Elastic Contact of movable contact flat 5, under the elastic reaction of movable contact flat 5, generally this operating member 6c is pressed to the top, when operating portion 6 is moved down, under the effect of operating member 6c, movable contact flat 5 is a fulcrum with stationary body 5b, thereby makes contact site 5a produce rotation.

In addition, by metallic plate, or the flat lid 7 of formation such as insulation board comprises and is used to 2 hole 7a that guide part 1f is passed, is used for the breach 7b chimeric with the protuberance 1s of framework 1, is arranged at the protuberance 7c on the relative sidepiece.

Have, in above-mentioned lid 7, guide part 1f passes hole 7a again, protuberance 1s and breach 7b are chimeric, according to by covering 7 modes that the peristome of framework 1 is covered, will cover 7 and be arranged on the end face 1c, in addition, protuberance 7c fixes by the fixed part 1m among the fixing arm 1n, covers 7 like this and is arranged on the framework 1.

When being provided with in the manner described above when covering 7, as shown in Figure 5, the stationary body 5b of movable contact flat 5 be in be held on cover 7 and end face 1c between state, in addition, the operating member 6c of operating portion 6 is in the contacted state of inner face with lid 7 under the flexible effect that is in the movable contact flat 5 of fixed contact 3 Elastic Contact states.

Assembly method to above-mentioned switch of the present invention describes below, at first, from being embedded with fixed

contact

2,3, peristome one side of 4 framework 1, the contact site 5a of movable contact flat 5 is inserted among the recess 1e, make the tab 5c of movable contact flat 5 and recess 1k chimeric, movable contact flat 5 is arranged on the end face 1c.

Then, the 6a of flat column portion of operating portion 6 is inserted among the hole 1g of guide part 1f, make operating member 6c and the grooving 1h of guide part 1f and the groove 1j tabling among the sidewall 1b of operating portion 6.

At last, guide part 1f is passed the hole 7a that covers in 7, the opposing of this state fixedly the elasticity of arm 1n protuberance 7c is pressed into, by fixed part 1m protuberance 7c is fixed, when covering 7 when being arranged on the framework 1, just finish the assembling of switch of the present invention.

That is, from a side of the peristome of framework 1, the assembling activity contact 5 successively, operating portion 6, and lid 7, thus can realize the assembling of this switch.

Below by Fig. 5,11, the action of 12 pairs of above-mentioned push switch of the present invention describes, and is in the not state of operation at operating portion 6, as shown in figure 11, one of them movable contact flat 5 is positioned at

fixed contact

2 and 3 contacted contact point S1 places, in addition, another movable contact flat 5 is positioned at and fixed contact 3 and 4 contacted contact point S3 places, 3 fixed

contacts

2,3,4 are in conducting state.

At this state, when from state shown in Figure 5, as shown in figure 12, when pushing an operating portion 6, operating portion 6 moves downwards as guiding with guide part 1f, and operating member 6c pushes one of them movable contact flat 5.

So this movable contact flat 5 is a fulcrum with stationary body 5b, contact site 5a produces rotation, as shown in figure 11, moves to contact point S2 from contact point S1, is in the state that is separated with fixed contact 2, and fixed contact 3 and 4 is in the state that keeps conducting.

In addition, at this state, when the pressed state with one of them operating portion 6 discharges, because the elastic reaction of movable contact flat 5,6c pushes back with operating member, operating portion 6 is in reset condition shown in Figure 5, and movable contact flat 5 also returns to reset condition, as shown in figure 11, change to contact point S1 from contact point S2, fixed

contact

2,3,4 are in conducting state.

In addition, when pushing another operating portion 6, carry out action same as described above, still, as shown in figure 11, movable contact flat 5 moves to contact point S4 from contact point S3, and fixed contact 3 and 4 is thrown off, and fixed

contact

2 and 3 is in the state that keeps conducting.

Have, when the pressed state with another operating portion 6 discharges, carry out action same as described above, still, as shown in figure 11, movable contact flat 5 changes to contact point S3 from contact point S4, fixed

contact

2,3, and 4 are in conducting state.

The operation of switch is carried out in the manner described above, even but 2 operating portions 6 are being pushed simultaneously, under the situation with their release, still can carry out the operation of this switch.

In addition, above-mentioned switch is arranged on the printed circuit mainboard 8 by the mounted on surface mode, but as shown in figure 13, this installation is such, offers 2

hole

8a, 8b in the printed circuit mainboard 8 that forms conductor 9.

Also have, be arranged at the state of printed circuit mainboard 8 end faces at the bottom of framework 1 1a, the teat 1p and the hole 8a in the printed circuit mainboard 8 of framework 1 is chimeric, determine the position of framework 1, the stationary body 1r of framework 1 is pressed among the hole 8b in the printed circuit mainboard 8, and pass this hole, fixed part 1q is fixed on the printed circuit mainboard 8, thereby framework 1 is installed on the printed circuit mainboard 8 securely.

In addition, at above-mentioned state, to fixed

contact

2,3,4 portion of terminal 2b, 3b, 4b and conductor 9 coating paste soldering materials 10.

Also have,, above-mentioned printed circuit mainboard 8 is passed through the heating furnace (not shown) when at this state, paste soldering material 10 fusings, thus fixed

contact

2,3,4 welds together with conductor 9.

When carrying out above-mentioned mounted on surface, even owing to take place at printed circuit mainboard 8 under the situation of vibration, switch is still supported securely by fixing arm 1r, and this switch can not produce from relative assigned position and be offset like this, thereby can not produce failure welding.

The present invention can provide following switch, because switch of the present invention is provided with the guide part 1f of tubular in framework 1, operating portion 6 is provided with on this guide part 1f in a movable manner, thereby flat lid 7 covers the peristome of framework 1, like this can be by peristome one side from framework 1, with operating portion 6, lid 7 modes that are encased in the framework 1 are assembled, therefore successively, this switch assembling work is simple, easily, assembling is good, and cost is lower.

In addition, the present invention can provide following switch, because lid 7 can form tabular, this switch can need not to adopt lower-cost parts under the situation of profiled part like this, so the cost of switch is lower.

Also have, the present invention can provide following switch, owing to lid is set by the fixedly arm 1n that is arranged in the framework 1, can will cover 7 and be assemblied in fixedly on the arm 1n by being pressed into action like this, this assembling is simple, owing to have fixedly arm 1n in the framework 1, make profiled part only form framework 1 like this, thereby the cost of switch is lower in addition.

In addition, the present invention can provide following switch, because the stationary body 5b of movable contact flat 5 can be provided with the mode of covering 7 clampings by the end face 1c by framework 1, the installation of suitable movable contact spring 5 and lid 7 only can realize just by the mode that overlaps that this assembling simply, in addition because movable contact flat 5 is used as the recovery spring of the operation of operating portion 6 simultaneously, number of components is less, and therefore, assembling is good, number of components in the switch is less like this, and cost is lower.

Have again, the present invention can provide following switch, owing to can lid be set by being arranged at the fixedly buttocks 1n in the framework 1, consistent with aforesaid effect like this, can will cover 7 and be assemblied in fixedly on the arm 1n by being pressed into action, its assembling be simple, in addition, assembling is good, also have owing to have fixedly arm 1n in framework 1, profiled part can only form framework 1 like this, and the cost of switch is lower.

In addition, the present invention can provide following switch, because the tab 5c in the movable contact flat 5 can be chimeric with the recess 1k of the end face 1c of framework 1, location in the time of can realizing movable contact flat 5 assemblings really, and should locate easily, assembling is good, can realize the installation of movable contact flat 5 in addition really, can realize switching manipulation really, keep stable.

In addition, the present invention can provide following switch, owing to be provided with teat 1p and fixing arm 1r in the bottom of framework 1, switch can be really towards printed circuit mainboard 8 location like this, in addition since constant intensity can increase, like this at printed circuit mainboard 8 when heating furnace moves, because vibration waits the offset of the switch cause can not take place, can not produce the welding dislocation, can not produce failure welding.

Also have, even be assembled into assembly, operating portion 6 is operated repeatedly, or operating portion 6 is applied under the situation of excessive operating physical force, scolding tin also can not be peeled off and breakage.

In addition, the present invention can provide following switch, because the stationary body 5b of movable contact flat 5 is installed by the end face 1c of framework 1 and the mode of lid 7 clampings, the effect with the front is identical like this, and the installation of movable contact flat 5 and lid 7 only just can realize by the mode that overlaps, its assembling is simple, because movable contact flat 5 is used as the recovery spring of the operation of operating portion 6 simultaneously, number of components is less like this, so assembling is good in addition, number of components is less, and cost is lower.

Claims

1. switch is characterized in that this switch comprises:

By the framework that the insulating material of synthetic resin constitutes, this framework has recess and tubular guide part, and the fixedly arm that a plurality of rubber-likes are provided with fixed part forms under the state outstanding from the end face of peristome side;

Operating portion, this operating portion have along the operating member that is provided with axial maintenance vertical direction; Form by metallic plate, be

The movable contact flat of font, this movable contact flat has contact site and stationary body;

Be arranged at the fixed contact in the said frame; And

Flat lid, this lid has the protuberance that combines with said fixing portion;

Aforesaid operations portion inserts above-mentioned guide part, with this guide part as guiding, be provided with in a movable manner, in addition, the stationary body of above-mentioned movable contact flat is arranged on the end face of said frame, above-mentioned contact site is received in the recess of said frame, the mode that above-mentioned lid covers with the peristome with said frame is arranged on the above-mentioned end face, by protuberance with the fixed part fixed cap of described fixedly arm, lid can be installed on the framework, and the stationary body of above-mentioned movable contact flat is held between above-mentioned lid and the framework, by moving of aforesaid operations portion, above-mentioned operating member makes above-mentioned movable contact flat motion, thereby the contact site of movable contact flat is realized contact and separated with fixed contact.

2. switch according to claim 1 is characterized in that the end face of said frame is provided with recess, and a pair of tab and the above-mentioned recess of both sides that is arranged at the stationary body in the above-mentioned movable contact flat is chimeric.

3. switch according to claim 1 and 2 is characterized in that the bottom of said frame is provided with fixedly arm, this fixedly arm have teat and fixed part.