JP2797168B2 - 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 fixed contact piece of a slide switch which can be used in a vehicle interior light and the like, and a slide switch which can improve an external connection means thereof, realize automatic assembly, and simplify its equipment.

[0002]

2. Description of the Related Art A conventional slide switch of this type is disclosed in, for example, Japanese Patent Application Laid-Open No. 2-276117,
As described in JP-A-1-57431 and JP-A-3-29221, a fixed contact piece of a switch is inserted into a molding die at the time of injection molding of a resin plate, a molten resin is injected and cooled. There is one in which a contact contact surface is exposed by integral molding of a mold and is buried shallowly in a resin plate.

[0003] However, the fixing contact piece by the insert embedding of the above-mentioned conventional examples is a shallow embedding fixation, and since the embedding depth of the contact piece with respect to the resin plate is less than its wall thickness and the joining force is weak, it is easy to peel off. There is a first problem.

In addition, it is necessary to constantly check the dimensional accuracy of the insert mold for the resin plate to maintain high accuracy, which is cumbersome to maintain, increases the cost of maintaining the accuracy, and complicates the molding die itself. In addition, there is a second problem that the cost is high and automation of molding is almost impossible.

[0005] In addition, this type of insert molding has a low molding speed and poor workability. Further, during molding, high-pressure molten resin easily flows into the gap between the dies, so-called burrs are easily generated. There is also a third problem that many defective products in which the essential contact surface is partially hidden by burrs.

Further, in each of these conventional examples, the fixing contact piece having a U-shaped vertical section cannot be pressed by the core pin because the bent piece is jammed due to the pressing pin of the fixing contact piece into the molding die. Therefore, there are many essential and serious problems that it is impossible to bury and fix the resin plate by integral molding of the insert.

[0007] In addition, as a prior art of a lamp in which a plurality of slide switch fixing pieces are arranged on a molded and solidified insulating plate, Japanese Patent Laid-Open No. Hei.
In this prior art, when one plug cover is put on three plug pieces, three holes penetrated on the back surface of the plug piece are provided with a so-called "desk or closet". The switch lid is inserted in the “pull-out type”, the switch lid is moved in a horizontal direction parallel to the surface of the insulating plate, and then mounted with screws.

[0008] However, the above-mentioned mounting method of this conventional example firstly involves three fixed contact pieces placed above the movable contact piece floating above the upper edge of the insulating plate recess by a resilient spring. After the whole is lowered or settled by the manual or assembling robot arm to the vicinity of the upper edge of the insulating plate recess against or against the elasticity of the spring, the fixed contact piece is pressed down with the switch lid with the plug cover. In addition, the three back holes of the plug cover are inserted into the plug pieces from the protruding ends thereof, and the entire switch cover is mounted in a drawer-type parallel manner with respect to the surface of the insulating plate.

Therefore, this conventional product requires a special pressing robot arm and manual operation to press down the three fixed contact pieces against the elasticity of the spring, and requires three fixed contact pieces with the plug cover. Since the mounting operation of the switch cover while pressing all of the above is troublesome, the pressing direction of the fixing contact piece and the direction of inserting the plug cover of the switch cover through the plug piece are different by 90 °.

Further, in combination with the above-mentioned difference in the pressing direction, a large number of members to be mounted, such as a sliding piece having a movable contact piece, a plurality of fixed contact pieces, a lamp and its socket, are mounted on the insulating plate. Since the vertical mounting direction is different from the horizontal mounting direction of the switch lid, which is inserted through the back hole of the plug cover into the plug piece and is mounted on the insulating plate in a “pull-out” manner, this is also different by 90 °. As a slide switch, there are two directions of assembly.

As a result, in the above conventional product, first,
In manual assembly of slide switches, work efficiency is poor, it is troublesome, and good products yield is low, and cost is high. In automatic assembly, the assembly robot arm and component transfer robot are complicated, large area, large and expensive, and investment in equipment is also required in place. However, there is an essential first problem in that it is uneconomical.

Further, in this conventional product, during the assembly of the slide switch section, three fixed contact pieces are placed on a movable contact piece floating on the insulating plate recess by a resilient spring, and these fixed contact pieces are mounted. Move the switch lid horizontally in the horizontal direction while rubbing while pushing down the upper part with the lower surface of the switch lid in an unstable temporary fixing state where the rear rising edge of one piece just abuts against the concave part of the insulating plate, It is necessary to cover the switch cover on the insulating plate recess while inserting the three holes on the back surface of the plug cover into the plug pieces, respectively.

As a result, the work of placing the switch lid in both of these prior arts is performed by pushing down and scraping all three fixed contact pieces which are resiliently floating against the elasticity of the elastic spring as described above. Therefore, the assembling work is extremely difficult, and there is also an essential second serious problem that the automatic assembling is almost impossible.

According to the present invention, in order to eliminate the above-mentioned problems, all members are sequentially and randomly superimposed on a base of the slide switch from one vertical direction.
An object of the present invention is to make it possible to assemble a slide switch and to simplify the automatic assembling equipment.

[0015]

SUMMARY OF THE INVENTION The object of the present invention is to insert a sliding body from above a recess into an insulative base with a knob facing outward from a long hole formed in the bottom of the insulative base .
In addition, a plurality of band-shaped fixed contact pieces are provided with which the upper part of a movable contact piece that is vertically movable via a resilient spring is elastically contacted with the sliding body .
At least one fixed contact piece has its rear part in the thickness direction.
Upright to make a wide rising strip,
Bend the narrow part at the top of the support piece further toward you to make the plug part
And forming the side edge protrusion of the rising support piece at the rear of the base.
The fixing piece is temporarily fixed to the opening edge of the base by being inserted from above into the vertical locking groove of the protruding piece that is erected at the same time, while the guide piece for attaching and detaching guide of the plug-in jack to be inserted into the plug portion.
The hole provided in the insulating plate having
And fixing the insulating plate over the opening edge of the base
Then, the fixing contact piece is formed on the inner surface groove of the insulating plate or the opening edge of the base.
This was achieved by positioning in the positioning groove .

[0016]

Since the fixed contact piece and the plug piece can be temporarily fixed by inserting the side edge projection of the rising support piece into the locking groove of the base projecting piece, the assembling and mounting can be performed reliably and quickly. In addition, the fixed contact piece can be located in the inner surface groove of the base plate or the insulating plate serving as the switch cover or the upper edge groove of the base recess, and the plug piece can be located at the side edge protrusion of the rising support piece at its base. It can be reinforced by engaging the locking groove.

Therefore, the fixed contact piece does not move sloppyly due to disturbances such as sliding friction caused by the movable contact piece, and the plug piece also moves sloppyly due to the above-described reinforcing action when inserting or removing a separate multi jack or the like. Stable.

For example, a positive power supply is connected to one plug piece, and another plug piece is connected to a negative power supply through, for example, a door switch and a load such as a lamp in series. By controlling the conduction between the fixed contact pieces with one piece, for example, the vehicle interior lamp can be turned off manually or turned on when the door is opened.

[0019]

An embodiment will be described with reference to the drawings. First, as shown in FIG. 1, the basic configuration of the present invention is as follows. As shown in FIG. 2, a knob 4 is protruded from a long hole 3 connected to a recess 2 of an insulating base 1 formed of a plastic rectangular parallelepiped as shown in FIG. Then, a sliding body 5 made of plastic or the like is movably provided in the recess 2 of the insulating base 1.

The movable contact piece 7 is resiliently provided in a recess 5a opened on the outer surface of the sliding body 5 with a resilient spring 6 such as a coil spring interposed therebetween. As shown in FIG. 2, the locking projection of the temporarily fixed resilient piece 7 a for preventing the jumping out which is protrudingly opposed to the movable contact piece 7 in advance as shown in FIG.
a, the elastic contact of the spring 6 prevents the movable contact piece 7 from jumping out of the recess.
Can be easily assembled by polymerization.

Further, a plurality of metal band fixing contacts 8, 8 which are elastically slidably contacting the outer surface of the movable contact piece 7, are cut into the upper edge of the insulating base recess 2, and fixed contact piece positioning grooves 2 a and pins. 2
b, and are arranged in parallel as shown in FIG.
3 and 5 with an insulating plate 9 screwed with a screw hole n to form a slide switch.

In the present invention, as shown in FIG. 1, the latter half of each of the fixed contact pieces 8, 8 or at least one of the fixed contact pieces 8 is bent upward in a U-shape in advance. 3 and 4, the side edge protrusion of the rising support piece 8a is inserted into a substantially T-shaped locking groove 1a formed in the protrusion 1A of the base 1 vertically. It is fixed and supported, and the periphery of the plug portion 8b at the end thereof is protected by being surrounded by a plug-in jack attaching / detaching guide frame 10 integrally formed with a hole 9a penetrating through the insulating plate 9 as shown in FIGS. By doing so, the slide switch according to the present invention can be configured.

The position of each fixing contact piece 8, 8 may be regulated in the inner groove 9b of the insulating plate 9, and the means for fixing the insulating plate 9 to the base 1 is indicated by a dashed line in FIG. The hook-shaped elastic piece 9c shown can be fixed to the upper edge of the side wall recess 1b of the base 1 with its elasticity and fixed by any known fixing means.

Note that the entire outer surfaces of the fixed contact pieces 8, 8 are
As shown in FIGS. 6 and 7, a projecting portion 1c is protruded from the side of the insulating base 1 and the fixing piece 8 is attached to this portion.
The extension portion at the rear portion is placed near the U-shaped rising portion, and a slightly wide insulating plate 9 is placed over the fixed contact piece 8 as shown in FIG. 7 to surround the plug portion 8b with the guide frame 10. In addition to being able to protect, the entire outer surface of the fixing piece 8 is
Can be concealed.

One of the fixed contacts 8, 8 is directly or directly connected via a lamp to an automobile chassis or the like at a short distance, and only the other fixed contact 8 has a U-shaped rising support 8a. The plug portion 8b is formed through
The circuit may be connected by a well-known plug-in jack J (see FIG. 3), and the other fixed contact piece 8 may be dropped to the body earth at a short distance as described above.

Further, as shown in FIG. 8, the shape of the rising support piece 8a of the fixed contact piece 8 is formed as a one-sided projecting side edge projection, and this rising support piece 8a is formed as shown in FIG. The base of the plug portion 8b can be reinforced by inserting it into the locking groove 1a of the base protrusion 1A and supporting the rising portion.

Furthermore, if three or more fixed contact pieces 8 and 8 are arranged in parallel, two adjacent fixed contact pieces 8 and 8
Can be sequentially turned on and off, and can be used as a switching slide switch.

The portion indicated by reference numeral 8c in FIG. 1 is a V-shaped notch or hole, which can be engaged with the pin 1b of the base 1 to ensure the positioning and localization of the fixing contact piece 8.

Next, the operation of the slide switch will be described. First, as shown in FIG. 10, when the movable contact piece 7 is moved to the left, the fixed contact pieces 8, 8 can be electrically connected across the two contact portions of the movable contact piece 7.

Next, when the knob 4 is moved to the right as shown in FIG. 11, the right contact of one of the movable contacts comes into contact with the inner surface of the insulating plate 9 to cut off the conduction between the fixed contacts 8 and 8 so that the switch is turned off. Can be turned off.

For example, one plug piece 8b is connected to a positive power supply pole, and the other plug piece 8b is connected to a negative power supply pole through, for example, a door switch and a load such as a lamp in series. Moving the movable contact 7 to the fixed contact 8,
By controlling the conduction between the eight, for example, the in-vehicle lamp can be manually turned off or turned on when the door is opened.

The guide leg 7a of the movable contact piece 7 is shown in FIG.
If the length is shortened together with the resilient spring 6, the slide switch can be made flat as a whole. Also, the sliding body 5 is formed with a forming pin hole 5b for expanding the depth of the recess 2 as shown in FIGS. 2 and 3, as shown in FIGS.

[0033]

As described above, the present invention has the following advantages. As a fixed contact piece of the slide switch, a narrow conductive plate called a bus bar as a power distribution band is bent into a U-shaped vertical cross section to form a fixed contact piece and a plug portion, and a plurality of these are formed and solidified insulating base 1 is provided in parallel with the opening edge in the longitudinal direction, and an insulating plate 9 is placed on the outer surface of the opening to eliminate the need for injection molding of the fixed contact piece into the resin plate. 8b can be assembled by inserting the side edge projections of the rising support pieces 8a into the locking grooves 1a of the molded and solidified base projecting pieces 1A and temporarily positioning them and temporarily fixing them. It can be localized at a position on the positioning grooves 2a of the inner grooved 9 b or substrate opening edge of the insulating plate 9 is in addition to the switch cover of the positioning temporary fixing.

Therefore, according to the present invention, the resin plate of the fixing piece required in the above-mentioned JP-A-2-276117, JP-A-61-57431 and JP-A-3-29221 is required. Injection molding is not required during injection molding, so that the accuracy of parallel positioning of fixed conductors can be improved, and defective products due to burrs, sink marks and sagging of insert molded products can be eliminated in the present invention. There is an effect of 1.

Further, according to the present invention, all members such as the sliding member 5, the resilient spring 6, the movable contact piece 7, the plurality of fixed contact pieces 8, and the insulating plate 9 are attached to the insulating base 1 from one direction. A slide switch can be assembled by successively superimposing and joining the members in a random manner, which is compared to a structure in which a large number of members are joined to an insulating plate from two directions as in the above-mentioned Japanese Patent Application Laid-Open No. 5-221264. However, in the present invention, since the one-way joint assembly is performed, the assembling efficiency can be greatly improved as compared with the above-described conventional example. Therefore, the present invention has an excellent second effect that the present invention is significantly more advantageous in terms of assembly cost and space than the above-described conventional example because the cost and the occupied space can be reduced. Also there.

According to the present invention, in particular, the fixing contact piece 8 and the plug piece 8b in the middle of assembling are formed with the locking groove 1a of the base projecting piece 1A whose side edge protruding part of the rising protruding piece 8a is formed and solidified. Into the insulating base 1
Since the insulating plate 9 serving as a switch cover can be attached from above, the plurality of fixed contact pieces 8 and plug pieces 8b are in a temporarily fixed state during assembly, so that they do not move sloppyly and can be automatically assembled. In addition, there is a third effect that the so-called "mis-assembly" accident was eliminated and the assembling workability was greatly improved as compared with the above-described conventional examples.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

FIG. 2 is an exploded sectional view of the embodiment of the present invention.

FIG. 3 is a cross-sectional view of FIG. 2 after assembly.

FIG. 4 is a cross-sectional view taken along a broken line in FIG. 3;

FIG. 5 is a cutaway perspective view of a main part after the assembly of FIG. 1;

FIG. 6 is an exploded sectional view showing another example of the present invention.

FIG. 7 is a sectional view showing another example of the present invention.

FIG. 8 is a perspective view showing another example of the rising support piece according to the present invention.

FIG. 9 is a perspective view showing another example of the protruding groove according to the present invention.

FIG. 10 is a longitudinal sectional view showing an example of use of the product of the present invention.

FIG. 11 is a longitudinal sectional view showing a state different from that shown in FIG. 10;

FIG. 12 is a sectional view of an assembling example in which the temporary fixing legs of the movable contact piece are shortened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulating base 1A Base projecting piece 1a Locking groove 2 Recess 3 Slot 4 Knob 5 Sliding body 6 Resilient spring 7 Movable contact piece 8 Fixed contact piece 8a Rising support piece 8b Plug piece 9 Insulating plate 9a Through hole 9b Fixed contact One buried groove 10 Guide frame for plug-in jack attachment / detachment J Plug-in jack

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-29221 (JP, A) JP-A-2-276117 (JP, A) JP-A 5-221264 (JP, A) 57278 (JP, U) Fully open 1986-169922 (JP, U) Fully open 1986-57431 (JP, U)

Claims (1)

(57) [Claims] 1. A toward the long hole 3 formed in the bottom of the recess 2 of the insulating base 1 the knob 4 to the outside thereon in said recess 2
With loosely inserted the sliding body 5 from the side, of the plurality of strip-shaped fixed contact piece 8 the upper portion of the movable contact piece 7 having vertically movable via Tamabachi spring 6 in this sliding member is in elastic contact, at least one of
The rear part of the fixed contact piece 8 is erected in the thickness direction to make it wider.
The rising support piece 8a is made, and an upper part of the rising support piece 8a is formed.
The narrow portion is bent further forward to form a plug portion 8b,
The side edge projection of the rising support piece 8a is provided at the rear of the base 1.
While temporarily fixed in the longitudinal direction of the fixed contact piece 8 a base opening edge crowded differentially <br/> from above the locking groove 1a of standing the projecting piece 1A, the plug interpolating fitted to the plug portion 8b A hole 9a provided in an insulating plate 9 having a guide piece 10 for attaching / detaching the in-jack J is provided.
The insulating plate 9 is passed through the plug portion 8b from above and the
The fixing contact piece 8 is cut off by covering and fixing the opening edge of the base.
Inner surface groove 9b of edge plate 9 or positioning groove 2a at the base opening edge
A slide switch that is localized with .