JP2711816B2 - Slide switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a changeover switch which can maintain an initial operation state of a switch even when a slider in a slide changeover switch is jogged. Such as an instantaneous blackout accident
The present invention relates to a slide changeover switch that can eliminate discomfort caused by a quick stop during a light-off operation.

[0002]

2. Description of the Related Art As a general slide switch, there is a conventional one described in, for example, JP-A-5-325722. In this conventional technique, in a slide switch provided with a movable contact piece on a sliding body, a knob is exposed to the outside through a hole in an upper plate of an insulating base formed into a substantially U-shaped cross section, so that the insulating body is formed in a recess of the insulating base. And a plurality of fixed conductors which are slidably provided in a substantially U-shape in a recess of the sliding body and slidably contact the intermediate projecting surface. This is a slide switch which is fixed in parallel with a space below each other.

[0003]

The above-mentioned prior art is characterized in that, at the moment when the sliding body is slid with fingers or the like through the knob or the moment when the knob is suddenly touched by an object, the middle of the conductive bullets is lost. As a result, the protruding surface immediately separates from one fixed contact piece.As a result, for example, the moment the finger touches the sliding body knob when the lighting is illuminated, or the moment when the knob suddenly touches the knob, the lighting lamp suddenly shuts off Since the lamp is turned on, an unexpected accident may occur or the user may feel uncomfortable, and there is a problem that the quality of the product is impaired.

According to the present invention, in order to eliminate the above-mentioned problems, a plurality of projecting surfaces which straddle between a plurality of fixed conductors in a slide switch and are formed on a slide switch are reduced by each projecting surface of a plurality of separately formed projectile pieces. By giving a time difference between the three fixed conductors and turning them off one after another from the short-circuit conduction state, there is no changeover switch that does not turn off unnecessarily with the inching of the knob,
It is an object of the present invention to make it possible to automatically assemble a slide changeover switch having a sense of moderation without using a coil spring.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to move a sliding body into a recess of an insulating base by pointing a knob to an outside through a hole formed in a surface of an insulating base formed into a hollow rectangular parallelepiped. In addition to the conductive member, the sliding member is provided with a conductive bullet that resiliently moves in a direction substantially perpendicular to the direction of movement of the sliding member. In forming a slide switch in which at least three fixed contact pieces that are slid in contact with each other by the resilience of the piece itself are fixed in parallel to the insulating base with a space therebetween, the conductive piece is the The base is inserted and fixed in the insertion groove of the sliding body, and an auxiliary bullet extending from the base of the bullet is branched and juxtaposed on the side in the width direction of the conductive bullet. Along with branching auxiliary bullets extending from one base, Could be achieved by forming the auxiliary protruding surface contacting said each auxiliary elastic-piece the stationary contact piece and partially in the moving direction thereof near both sides to avoid the protruding surface portions of the conductive bullet pieces. The conductive bullet may be cantilevered with respect to the sliding body at the bullet base on one side.

[0006]

In the switch state immediately after assembly, for example, the protruding surface of the conductive bullet is partially dropped between the left and center fixed contact pieces due to the elasticity of the conductive bullet itself, and the two fixed contacts are disposed. Since the two fixed contact pieces on the left side are short-circuited by the projecting portion of the conductive piece, the switch is in a switch-on left position. At this time, the protruding surfaces of the two auxiliary bullets are in elastic contact with the upper portions of the center and left fixed contact pieces, respectively, with their own elasticity.

Then, in order to turn off the switch from the on state, the knob is moved, for example, rightward in the off direction. First, after the projecting surface of the conductive bullet is separated from the right slope of the left fixed contact piece, While riding on the right fixed contact piece against the deflection elasticity of the above-mentioned bullet piece, at this time, the auxiliary protruding surface of each auxiliary bullet piece is still in contact with the left slope and the right slope of each central fixed contact piece respectively. , The knob keeps the switch on the left. In this state, the two fixed contact pieces are still electrically connected by a conduction path from the projecting surface of the conductive projectile to the projecting surface of the two auxiliary projecting pieces via the projectile base. That is, even if the knob is moved by about half the length of the fixed contact piece, the switch does not turn off.

Subsequently, by moving the knob to the right, the projecting surface of the conductive bullets is aligned with the upper portion of the right fixed contact piece, and then starts to descend and stabilizes.
First, the auxiliary protruding surfaces are separated from the respective inclined surfaces of the fixed contact pieces on the left and right sides, and are turned off. After passing through this off state, as the center fixing contact piece of the conductive projecting projecting portion starts to descend, this time, , Each auxiliary projection comes into contact with the left slope of each of the center and right fixed contact pieces, and the switch starts to be shifted to the right.

In this state, the space between the two fixed contact pieces is
Electrical conduction is provided by a conduction path from the projecting surface of the conductive projectile to the two auxiliary projecting projecting portions via the projectile base. By continuing to move the knob to the left, this time, the projecting surface of the conductive bullets partially snapped between the right and center fixed contact pieces due to the elasticity of the conductive bullets, and each of the right and center Short-circuiting between the fixed contact pieces ensures that the switch is turned on to the right.

Next, in order to turn off the knob right-adjustment switch again, the knob is moved to the left in a direction opposite to the operation at the time of the on-state. While riding up against the elasticity of the one piece, the auxiliary contact piece protruding surfaces are separated from the left and right fixed contact pieces, and are switched off.

[0011] Thereafter, the auxiliary projections resiliently contact the right slopes of the left and center fixed contact pieces as the knob is moved to the left, and the knob starts to be shifted to the left as described above, and the knob is subsequently moved to the left. Then, this time, the projecting surface of the conductive bullets partly snapped between the left and center fixed contact pieces due to the elasticity of the conductive bounce, and short-circuited between the left and center fixed contact pieces. , The knob left alignment switch ON state can be secured.

Since the projecting surface of the conductive bullet moved by the knob elastically snaps into the valley of the fixed contact, a click action, that is, a snap action can be given to the knob operation as a slide switch. The snap operation and crisp knob operation were possible, and the controllability as a switch was improved.

[0013]

An embodiment will be described with reference to the drawings. First, as shown in FIG. 1, the basic structure of the first embodiment of the present invention is as follows. A knob 3 is provided to the outside through a hole 2 penetrated through, for example, an upper plate of an insulating base 1 formed of plastic in a hollow rectangular parallelepiped shape. 2. The recess 1a of the insulating base 1 exposed as shown in FIG.
A flat inverted U-shaped plate-shaped sliding body 4 made of plastic or the like is movably provided therein. The portion indicated by reference numeral 4A is
It is a slippery post.

An elastic conductive plate made of phosphor bronze or the like, which resiliently deforms substantially perpendicularly to the moving direction of the sliding member 4 in an insertion groove 4a cut out on both sides of the sliding member 4 in the longitudinal direction. Of the conductive bullets 5 on both sides thereof,
5a is inserted and temporarily fixed and disposed.
A protruding surface portion 6 protrudes outward in the middle of.

As shown in FIG. 3, the projecting surface 6 has three fixed contact pieces 7, 7 which are slidably contacted with each other by the elasticity of the conductive elastic piece 5 itself. After fixing in parallel via the contact piece embedding groove 1b or the like formed in some places, an insulating lid 10 is placed from outside to fix as necessary.

In particular, in the present invention, on both sides of the conductive bullet 5 in the width direction, auxiliary bullets 8 extending from the bullet base 5a as shown in FIGS. An auxiliary projecting surface 9 that partially contacts the fixed contact piece 7 is formed on the auxiliary projecting piece 8 near both sides thereof so as to avoid the projecting surface 6 of the conductive projecting piece 5.

The insulating base 1 of the three fixing contact pieces 7, 7
The parallel fixing means may be, for example, fixing the fixing pieces 7, 7 to the insulating base 1 by screwing, or fixing the fixing pieces 7, 7 are fixed in parallel, and the insulating lid 10 is covered and fixed on the opening edge of the insulating base 1 so that the fixing contact pieces 7 are fixed in parallel while keeping a space on the opening edge of the insulating base 1. Is also good.

Next, the procedure for assembling the slide switch will be described. First, of the components shown in FIG.
As shown in FIG. 3, a flat U-shaped conductive bullet 5 is inserted into insertion grooves 4a on both left and right pieces of a hollow rectangular parallelepiped sliding body 4 formed of plastic, and the projectile bases 5a on both sides in the length direction are arranged as shown in FIG. , And temporarily inserted into the hole 2 in the upper plate of the concave portion 1a of the insulating base 1, and the knob 3 is engaged. The fixed contact pieces 7, 7 are applied to the lower portion of the insulating base 1 as shown in FIG.

After this fitting, the projecting surface 6 is fixedly connected with the embedding groove 1b or a screw so that the projecting surface 6 is slightly pushed in as shown in FIG. By fixing the pieces 7 and 7 to the opening edge of the insulating base 1, screwing the insulating lid 10 to the opening edge of the base as shown in FIG. , 7 to the insulating substrate 1
And fixed in parallel to the opening edge.

Next, the operation of this switch will be described. The switch state immediately after assembly includes three fixed contact pieces 7 and 7
Among them, for example, the protruding surface portion 6 of the conductive elastic piece 5 partially falls between the two fixed contact pieces 7 on the left side and the center as shown in FIG. 3A due to the elasticity of the conductive elastic piece 5 itself. Because it is straddling and elastically straddling the two fixed contact pieces 7, 7,
A conductive projecting portion 6 is provided between the two fixed contact pieces 7 on the left side.
Is short-circuited and the knob is set to the left-aligned switch. At this time, each projecting surface 9, 9 of the two auxiliary bullets 8
Are elastically in contact with the upper portions of the fixed contact pieces 7 on the center and the left side, respectively, with their own elasticity.

Next, when the knob 3 is moved to the off direction, for example, rightward in order to turn off the knob left-adjustment switch on state, first, the projecting surface 6 of the conductive bullet 5 is turned to the right slope of the left fixed contact 7. 3B, on the right fixing contact piece 7 against the deflection elasticity of the bullet piece 5 as shown in FIG. 3B, and at this time, the auxiliary projecting surface 9 of each auxiliary bullet piece 8 Are still in contact with the right slopes of the left and center fixed contact pieces 7 as shown in FIG. 3B, respectively, and the knob left-justification switch-on state is maintained. In this state, the two fixed contact pieces 7 are still electrically connected to each other by a conduction path extending from the projecting surface 6 of the conductive bullet 5 to the two auxiliary projecting projecting surfaces 9 via the projecting piece base 5a. That is, the switch does not turn off even if the knob 3 is moved by about half the length of the fixed contact piece 7.

Subsequently, by moving the knob 3 to the right,
This time, after the projecting surface portion 6 of the conductive bullet 5 matches the upper portion of the right fixing contact piece 7 as shown in FIG. 3C, it starts to descend as shown in FIG. )), But before that, first, as shown in FIG. 3 (c), the auxiliary protruding surfaces 9 are separated from the respective inclined surfaces of the fixed contact pieces 7 on the left and right sides, and are switched off. After passing through the OFF state, as the center fixing contact piece 7 of the conductive projecting piece projecting portion 6 starts to descend, each auxiliary projecting surface 9 is attached to the left slope of each of the center and right fixing contact pieces 7, 7. Touches and the knob starts to be turned on. In this state, the two fixed contact pieces 7 are electrically connected to each other by a conduction path from the projecting surface 6 of the conductive bullet 5 to the two auxiliary projecting projecting surfaces 9 via the projecting piece base 5a.

Subsequently, by moving the knob 3 to the left, the projecting surface 6 of the conductive bullet 5 is placed between the right and center fixed contact pieces 7 as shown in FIG. The part 5 snaps down due to the elasticity of the piece 5, and short-circuits between the right and center fixed contact pieces 7, 7 so that the switch can be turned right.

Next, in order to turn off the knob right-adjustment switch again, the knob 3 is turned in the opposite direction to the operation at the time of turning on.
Is moved to the left, first, the protruding surface portion 6 of the conductive bullet 5 rides on the center fixed contact piece 7 against the deflection elasticity of the conductive bullet 5 as shown in (d) → (c) of FIG. At the same time, as shown in FIG.
7 are both switched off.

Thereafter, when the knob 3 is moved to the left, the auxiliary protruding surfaces 9, 9 are respectively resiliently contacted with the right slopes of the left and center fixed contact pieces 7, and the knob starts to be turned on as described above. 3A, the projecting surface 6 of the conductive elastic piece 5 is now positioned between the left and center fixed contact pieces 7 and 7 as shown in FIG. As a result, the left and center fixed contact pieces 7, 7 are short-circuited, and the switch left-justified switch-on state can be secured.

Then, as shown in FIGS. 3 (a) and 3 (e), the projecting surface 6 of the conductive bullet 5 moved by the knob 3 is snapped by the elasticity of the conductive bullet 5 as shown in FIGS. By the depression, a click action, that is, a snap action can be given to the knob operation as a slide switch, so that the snap operation can be snapped and crisp, and the controllability as a switch is improved.

The configuration and operation of the slide on / off switch according to the first embodiment of the present invention are as described above. The cross-sectional shape of the fixed contact pieces 7, 7 according to the present invention is the same as that of the first embodiment. In addition to a triangular wave-shaped convex portion serving as a contact portion formed by a burring method on a predetermined portion of a plate, a fixed contact piece according to the second to fifth embodiments of the present invention as shown in FIGS. The cross-sectional structure of the contact portions 7 and 7 could be adopted.

That is, in the second embodiment of the present invention shown in FIG. 4, the fixed contact pieces 7, 7 are formed in a round pipe shape, and the conductive projecting part 6 and the auxiliary projecting part 9 are formed on the upper surface thereof. Are configured to slide elastically.

In the third embodiment of the present invention shown in FIG. 5, the fixed contact pieces 7, 7 are formed in a vertical strip shape and arranged in parallel, and the conductive projecting part 6 and the auxiliary projecting part are provided on the upper part. 9 are configured to slide elastically.

Further, in the fourth embodiment of the present invention shown in FIG. 6, the fixed contact pieces 7, 7 are formed in a flat strip shape, and the conductive bullet projecting surface 6 and the auxiliary bullet projecting surface 9 are formed on the upper surfaces thereof. Are elastically contacted with each other, and the ON state is stabilized by the fact that the protruding surface portion 6 partially falls between the fixed contact pieces in the shape of a flat band plate. In FIG. 6, a portion denoted by reference numeral 1 c is a recess formed in the insulating cover 10 for dropping the protruding surface 6, but when the insulating cover 10 is not used, the recess 1 c is naturally eliminated.

Next, in a fifth embodiment of the present invention shown in FIG. 7, the fixed contact pieces 7, 7 are made of a flat band plate, which is formed in a partial mountain shape, and a conductive ball is formed on the upper surface of the small mountain portion. Only the one projecting surface portion 6 is slidably contacted, and the auxiliary projecting piece projecting surface 9 is configured to elastically slide on a flat plate portion other than the above-mentioned chevron portion.

Further, an auxiliary bullet 8 which is a part of the movable contact piece
As shown in FIGS. 8 (a) and 8 (b), each of the projecting pieces 5 is formed to extend from two projecting piece bases 5a, 5a on both sides of the conductive projecting piece 5, and an auxiliary projecting surface 9 is formed at the middle or end thereof. Alternatively, as shown in FIG. 8C, two auxiliary projecting surfaces 9, 9 may be formed in the middle of one auxiliary projecting piece 8.

The lengths of the insulating substrate 1 and the recesses 1a and the holes 2 in the present invention are shown in FIGS. 9 (a) to 9 (e) as compared with those of the above embodiments. To
By slightly extending in the right direction, the rightward movement range of the sliding body 4 can be further increased from the state of the lowermost views in each of FIGS. 3 to 7, and FIGS. 9A to 9E. As shown in the drawings, all the movable contact projections 6, 9 escape from the two valleys of the three fixed contact pieces 7, 7, and a complete switch-off state is obtained.

This off state can be stably held by the pressing engagement of the conductive projecting piece protruding portion 6 against the right fixing contact piece 7 by its own elastic force. Then, by moving the knob 3 left from the off state, the above-mentioned “knob right-on state” →
The switching operation can be performed in the order of “OFF state” → “knob left ON state”.

As shown in FIGS. 8 (d) and 8 (e), the conductive projectile 5 used in the present invention is formed by projecting a single projectile base 5a together with the auxiliary projecting piece 8 from a single projectile base 5a. As shown in FIG. 10, the one elastic piece base 5a can be used by being pressed tightly into the insertion groove 4a of one side piece of the sliding body 4.
As shown in (d) and (e), the locking bullet 5b formed outwardly and downwardly inclined on the bullet base 5a is applied to the locking step 4b of the sliding body 4 with respect to the elasticity of the locking bullet 5b. As shown in FIG. 11, by inserting from below the insertion groove 4a, the locking elastic piece 5b can be resiliently restored to be used by being locked to the locking step 4b.

Also, as shown in FIG. 12, the sliding body 4 itself is provided with lower sliding posts 4A projecting from the lower four corners of the plate-like body.
By inserting and using the base 5a of the conductive bullet 5 in the insertion groove 4a provided in the base of the sliding post 4A, flattening of the entire switch can be promoted. Further, in each of FIGS. 4 to 12 described above, the portions denoted by the same reference numerals as those in FIGS. 1 and 3 indicate the same portions or the equivalent portions as those in the embodiment.

[0037]

As described above, the present invention has the following advantages. Even if the knob 3 is slid a small distance in the off direction from each of the two switch-on states where the knob 3 is shifted to the left and right, the space between the two fixing contact pieces 7 is from the projecting surface 6 of the conductive bullet 5. The switch is not turned off even if the knob 3 is moved by about half the width of the fixed contact piece 7, and the switch is not turned off. When the knob is moved in the OFF direction, the conduction between any two fixed contact pieces 7, 7 can be interrupted and the switch can be turned off. Therefore, the moment when the knob is slid with a finger or the like, the knob is unexpectedly moved. At the moment of touching, the projecting surfaces of the two conductive bullets are not separated from the fixed contact piece, and there is a benefit that, for example, an accidental extinguishing of a two-color lighting lamp can be prevented.

According to the second aspect, since the conductive bullet 5 can be fixed to the sliding body 4 with the single bullet base 5a, the effect that the assembling workability can be further improved can be added. .

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a slide switch of the present invention.

FIG. 2 is an enlarged cross-sectional view of the center part after the assembly of the above.

FIG. 3 is a longitudinal sectional view showing an operation state after assembly of the one shown in FIG. 1;

FIG. 4 is a longitudinal sectional view showing an operation state of a second embodiment of the present invention.

FIG. 5 is a longitudinal sectional view showing an operation state of a third embodiment of the present invention.

FIG. 6 is a longitudinal sectional view showing an operation state of a fourth embodiment of the present invention.

FIG. 7 is a longitudinal sectional view showing an operation state of a fifth embodiment of the present invention.

FIG. 8 is a perspective view showing another example of the movable contact piece used in the present invention.

FIG. 9 is a longitudinal sectional side view showing another example of the slide operation in the slide switch of the present invention.

FIG. 10 is an essential part perspective view showing another example of the present invention.

FIG. 11 is an enlarged sectional view of a main part showing another example of mounting a conductive bullet.

FIG. 12 is a perspective view showing another example of the sliding body.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 insulating base 1 a recess 1 b fixed contact piece embedding groove 2 hole 3 knob 4 sliding body 4 A sliding post of sliding body 4 a insertion groove 4 b locking step 5 conductive bullet (movable contact piece) 5 a bullet base 5 b locking bullet Piece 6 protruding part 7 fixed contact piece 8 auxiliary projecting piece (movable contact piece) 9 auxiliary projecting face 10 insulating cover

Claims (2)

(57) [Claims] 1. A sliding body 4 is movably provided in a recess 1a of an insulating base 1 with a knob 3 directed outward from a hole 2 provided in a surface of an insulating base 1 formed into a hollow rectangular parallelepiped shape. A conductive bullet 5 which elastically moves in a direction substantially perpendicular to the moving direction of the sliding member 4 is disposed on the sliding body 4, and a projecting portion 6 projecting outward in the middle of the conductive bullet 5 is provided with the conductive bullet. 5
In a slide switch in which at least three fixed contact pieces 7, 7 which slide over and slide by their own elasticity are fixed to the insulating base 1 in parallel with a space therebetween, the conductive elastic piece 5
Are inserted and fixed in the insertion groove 4a of the sliding member 4 and the auxiliary bullet 8 extending from the bullet base 5a is provided side by side in the width direction of the conductive bullet 5, and
A slide changeover switch in which auxiliary projecting surfaces 9 are formed on the auxiliary projecting pieces 8 near both sides in the moving direction of the conductive projecting pieces 5 so as to partially contact the fixed contact pieces 7, respectively. 2. A slide changeover switch in which a conductive bullet 5 is cantilevered with respect to a sliding body 4 by a bullet base 5a on one side thereof.