JP2000173398A - Slide switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the generation of electrical trouble such as operation failure of a sliding body and contact failure of a contact due to the intrusion of flux. SOLUTION: One end of a fixed terminal 6 is projected outside through a side wall 13, and the other end thereof is formed into a contact part 50 exposed in a guide groove 10 and connected to a movable contact piece 5. The movable contact piece 5 is fitted to a sliding body 4, and the movable contact piece 5 is slid on the contact part 50 with the slide of the sliding body 4. A recessed part 16 is formed between the contact part 50 and a side wall of an insulating case 2. At the time of soldering, even if the flux intrudes from a clearance between the insulating case 2 and a case 3, since the flux stays in the recessed part 16, movement of the sliding body 4 is not hindered. Since intrusion of the flux into the contact part 50 is prevented, adhesion of the flux to the fixed terminal 6 is thereby prevented, and the generation of electrical trouble such as contact failure can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide switch, and more particularly, to a slide switch for preventing flux or the like from entering a contact portion.

[0002]

2. Description of the Related Art A conventional slide switch 100 is shown in FIG.
0, as shown in FIG.
02, cover 103, fixed terminal 104, movable terminal 105
Consists of The insulating case 101 is generally box-shaped.
The sliding body 102 is provided with an engagement recess 111 for engaging and holding the operation portion 110 protruding from the insulating case 101 and the movable terminal 105.
And is slidably housed in the insulating case 101. Further, on the upper surface of the sliding body 102, an engagement uneven portion 112 with which the elastic moderating portion 114 is engaged is formed. Cover 1
Numeral 03 is formed so as to cover the entire top surface of the insulating case 101, and is formed integrally with the cover 103 so that the elastic moderation portion 114 has a downwardly convex shape. The elastic moderation portion 114 is formed with slits 113 on both sides, so that the elastic moderation portion 114 can be elastically deformed in the vertical direction. One end of the fixed terminal 104 has an insulating case 101.
Is exposed to the inner bottom surface to form a contact portion, and the other end protrudes from the insulating case 101 to the outside. The movable terminal 105
The sliding member 102 is engaged with the engaging concave portion 111, and slides on the fixed terminal 104 by sliding of the sliding member 102.

[0003] By operating the operation unit 110, the slide switch 100 can move the sliding body 102 as shown in FIG.
The terminal slides in the middle and left and right directions, whereby the movable terminal 105 slides on the contact portion of the fixed terminal 104 to switch the switch, and a predetermined signal is output from one of the plurality of fixed terminals 104. During sliding, the elastic moderating portion 114 is elastically deformed when it gets over the convex portion of the engaging concave and convex portion 112 and returns to the initial state when it falls into the concave portion.
When the user slides No. 2, a sense of moderation is obtained.

[0004]

However, in such a conventional slide switch 100, the flux penetrates through the insulating case 101 and enters the insulating case 101 from the gap between the insulating case 101 and the cover 103 during soldering. As a result, there is a problem that the operation of the sliding body 102 becomes heavy, or the sliding body 102 adheres to the fixed terminal 104 to cause poor contact. Particularly, in recent years, since the height of components has been reduced, the thickness of the insulating case 101 has become thinner, so that flux easily penetrates, and the problem of operation failure and electric trouble due to the penetration of the flux is serious.

An object of the present invention is to provide a slide switch for preventing malfunction and electrical trouble.

[0006]

According to the present invention, there is provided a fixed terminal having a contact portion exposed in an insulating case, penetrating a side wall of the insulating case, and having one end protruding outside, and protruding from the insulating case. In a slide switch including a sliding body having an operation portion, a movable contact piece that comes into contact with and separates from the contact portion by sliding of the sliding body, and a cover that covers the insulating case, the side wall of the insulating case and the contact A recess is formed between the portions.

[0007] By operation of the operation unit, the sliding body slides, and the movable contact piece slides on the fixed terminal to switch the switch, and a predetermined signal is sent from the fixed terminal to the outside. On the other hand, at the time of soldering, the flux that has entered along the side wall from between the cover and the insulating case accumulates in the recess, and does not enter the contact portion.

Further, a moderating portion having an uneven shape is formed on a side surface of the sliding body, and the cover is engaged with the moderating portion and elastically deforms in the insulating case by sliding of the sliding body. A detent spring portion is formed, and the recess is formed substantially below the detent spring portion.

The sliding of the sliding body causes the moderation spring portion to engage with the moderation portion while being elastically deformed, thereby providing a moderation feeling.

Further, the recess is formed continuously across the plurality of fixed terminals.

The flux that has entered the gap between the cover and the insulating case along the side wall spreads and accumulates in the recess, and does not enter the contact portion.

Further, the side wall is erected up to substantially the same height as the upper surface of the cover.

The flux that has penetrated into the insulating case beyond the side wall accumulates in the recess, thereby preventing the flux from entering the contact portion.

[0014]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 8 show one embodiment of the slide switch 1 of the present invention.
FIG. 1 is a plan view of the slide switch 1, and FIG.
FIG. 3 is a cross-sectional view taken along the line A, FIG. 3 is a view showing a state where a cover 3, a slide body 4 and a movable contact piece 5 of the slide switch 1 are removed, and FIG.
FIG. 5 is a sectional view taken along line BB of FIG. 3, FIG.
7 is a plan view of the cover 3, FIG. 7 is a plan view of the sliding body 4, and FIG.

The slide switch 1 comprises an insulating case 2, a cover 3, a sliding member 4, a movable contact piece 5, and a fixed terminal 6.

The insulating case 2 is box-shaped and has fixed terminals 6.
Are formed, and a protruding wall 15 is formed.
Are formed to protrude. A groove 18 is provided between the protrusions 15.
It has become. A guide groove 10 is formed on the inner bottom surface of the insulating case 2 along the longitudinal direction of the insulating case 2 (the left-right direction in FIG. 1). The contact portion 50 of the fixed terminal 6 is exposed on the surface of the guide groove 10. A recess 16 is formed adjacent to the side wall 13. The recess 16 is formed continuously along the longitudinal direction of the insulating case 2 across the plurality of fixed terminals 6. The recess 16 and the guide groove 10
Between them, a stopper wall 17 is formed continuously across the plurality of fixed terminals 6 along the longitudinal direction of the insulating case 2. The stopper wall 17 is formed lower than the side wall 13. Further, five fixed terminal protruding holes 12 are formed in the side wall 13, and an operation portion protruding window hole 11 is formed in the side wall opposite to the side wall 13. A boss 14 for fixing is formed on the bottom surface.

The cover 3 is formed to have a size substantially covering the insulating case 2, has a substantially L-shaped cross section, and has a detent spring portion 20 formed so as to be elastically deformable in the vertical direction in FIG. . The detent spring portion 20 is located above the width H by using the width H generated by forming the recess 16, so that the space can be effectively used and the whole can be reduced in size. In addition, projecting portions 15 are provided on both sides of the cover 3.
And a substantially T-shaped fixing piece 21 for engaging the cover 3 with the insulating case.

An operating portion 30 projecting from the insulating case 2 is formed on the sliding body 4, and an engaging recess 31 for engaging and holding the movable terminal 5 is formed on the bottom surface. In addition, a moderating portion 32 having a concave-convex shape to be engaged with the moderating spring portion 20 is formed on a side surface of the sliding body 4.

The movable contact piece 5 has a substantially V-shaped cross section, and FIG.
As shown in FIG. 4, the tip is forked and four contact portions 40 are formed. The movable contact piece 5 is pressed downward by the cover 3 so that the contact portion 40 is pressed against the contact portion 50 of the fixed terminal 6 to obtain a good electrical connection. The width of the movable terminal 5 in the short direction is substantially the same as the width of the guide groove 10 in the short direction, so that the movable terminal 5 is guided by the guide groove 10 and can slide without rattling.

A plurality of the fixed terminals 6 are partially fixed to the insulating case 2 by integral molding, and one end of the fixed terminal 6 is exposed to the guide groove 10 connected to the movable contact piece 5.
The other end is a terminal portion 51 that penetrates the side wall 13 and protrudes outside from the insulating case 2. The terminal portion 51 is soldered to a conductive pattern on a circuit board (not shown).

Incidentally, it is also conceivable to form the detent mechanism on the upper surface of the cover 3 like the conventional slide switch 100. However, when the moderation mechanism is formed on the upper surface of the cover 3, the moderation mechanism portion is provided in FIG.
Therefore, it is necessary to urge the fixing piece 21 'of the cover 3 downward as shown by the arrow b, and an upward force is applied to the fixing piece 21' of the cover 3 as shown by the arrow a in FIG. On the other hand, when the insulating case 2 is conveyed to the constant temperature layer during soldering, the insulating case 2 warps so as to project downward by heat. As a result, the insulating case 2
The warp of 'is promoted by the forces in the directions of the arrows a and b applied to the respective portions of the cover 3', and the fixed terminals are lifted up, making it impossible to solder.
Further, the cover 3 'is disengaged from the insulating case 2', and the cover 3 'rises. Therefore, it is desirable to form the moderation mechanism on the side surface.

Next, a method of assembling the slide switch 1 will be described below. First, the movable contact piece 5 is loosely fitted into the guide groove 10 of the insulating case 2 to which the fixed terminal 6 is fixed by integral molding. Next, the engagement concave portion 31 and the movable contact piece 5
, And the operation unit 30 is further projected from the operation-portion projecting window hole 11, and the sliding body 4 is incorporated into the insulating case 2. Next, the cover 3 is placed so as to cover the upper surface of the insulating case 2, and the cover 3 is fixed to the insulating case 2 by engaging the fixing pieces 21 and the protrusions 15. In this state, since the movable contact piece 5 is pressed downward, the contact portion 40 of the movable contact piece 5 comes into pressure contact with the contact portion 50 of the fixed terminal 6. The moderation spring portion 20 is located substantially above the recess 16. The upper end of the side wall 13 is formed so as to have substantially the same height as the upper surface of the cover 3.

In the slide switch 1 thus assembled, when the operating member 30 is operated to slide the sliding member 4 in the left and right direction in FIG. 1, the movable contact piece 5 slides in the same direction together with the sliding member 4. I do. Due to the sliding of the movable contact piece 5, the movable contact piece 5 slides on the plurality of contact portions 50, and the movable contact piece 5 short-circuits any two fixed contacts 6 to output a predetermined electric signal.

Also, the sliding of the sliding member 4 causes the moderation spring portion 20 to elastically deform downward in FIG. 1 when it climbs over the convex portion of the moderation portion 32, and returns upward when it falls into the concave portion, thereby providing a sense of moderation. Is obtained.

When soldering, the flux is applied to the side wall 1.
When the flux enters through the gap between the cover 3 and the insulating case 2 along the path 3, the flux accumulates in the recess 16 and the contact portion 50.
No intrusion into.

Such a slide switch 1 has a side wall 1
Since the recess 16 is formed adjacent to the contact 3, even if the flux enters during the soldering, the flux accumulates in the recess 16, so that the operation of the slide body 4 does not become heavy and adheres to the contact portion 50. Since there is no electrical trouble, electrical troubles such as poor contact can be prevented. Further, the moderation spring portion 20 is positioned within the width H of the recess 16 and the width H is used, so that the size can be reduced.
Further, since the recesses 16 are formed continuously across the plurality of fixed terminals 6, flux entering from any of the side walls 13 can be accumulated in the recesses 16 and the depth of the recesses 16 is reduced. Even so, the flux that has penetrated can spread in the lateral direction, so that the height can be reduced. Further, since the side wall 13 is formed at substantially the same height as the upper surface of the cover 3, it is difficult for the flux to enter. In addition, since the moderation portion 32 and the moderation spring portion 20 are formed on the side surfaces, it is possible to prevent the cover 3 from floating due to warpage of the cover 3 due to heat during soldering.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention. For example, in the present invention, the moderation portion 32 and the moderation spring portion 20 are formed on the side surface, but are not necessarily formed on the side surface, and may be formed on the upper surface. In the present invention, the recess 16 is formed along the side wall 13 adjacent to the side wall 13, but it is not always necessary to form the recess 16 along the side wall 13, and the contact portion 50 is not necessarily formed.
May be formed so as to surround.

[0028]

According to the first aspect of the present invention, even if the flux enters the insulating case, the flux accumulates in the recess and does not enter the contact portion, so that the operation of the sliding body is prevented from becoming heavy. And electrical troubles such as poor contact can be prevented.

According to the second aspect of the present invention, the moderating spring portion is located by utilizing the space above the recess, so that the size can be reduced.

According to the third aspect of the present invention, the depth of the recess can be reduced, so that the height can be reduced.

According to the fourth aspect of the present invention, it is possible to make it difficult for the flux to enter.

[0032]

[Brief description of the drawings]

FIG. 1 is a plan view of a slide switch 1 according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 shows a cover 3 of the slide switch 1 according to the present invention;
Plan view with sliding body 4 removed

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a sectional view taken along line CC of FIG. 3;

FIG. 6 is a plan view of the cover 3.

FIG. 7 is a plan view of the sliding body 4.

FIG. 8 is a side view of the slide 4;

FIG. 9 is a view for explaining a force applied to a cover 3 ′.

FIG. 10 is a plan view of a conventional slide switch 100.

11 is a sectional view taken along line DD of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slide switch 2 Insulating case 3 Cover 4 Sliding body 5 Movable contact piece 6 Fixed terminal 10 Guide groove 11 Window part for operating part projection 12 Fixed terminal projection hole 13 Side wall 14 Boss 15 Projection part 16 Concave part 17 Stopper wall 18 Groove 20 Moderation Spring part 21 Fixing piece 30 Operation part 31 Engagement concave part 32 Moderation part 50 Contact part 51 Terminal part

Claims (4)

[Claims] A contact portion exposed in the insulating case;
A fixed terminal that penetrates the side wall of the insulating case and has one end protruding outside; a sliding body having an operating portion protruding from the insulating case; And a cover that covers the insulating case, wherein a recess is formed between the side wall and the contact portion of the insulating case. 2. A moderating portion having an uneven shape is formed on a side surface of the sliding body, and the cover is engaged with the moderating portion, and is elastically deformed in the insulating case by sliding of the sliding body. The slide switch according to claim 1, wherein a moderation spring portion is formed, and the recess is formed substantially below the moderation spring portion. 3. The slide switch according to claim 1, wherein the recess is formed continuously across the plurality of fixed terminals. 4. The apparatus according to claim 1, wherein said side wall is erected to a height substantially equal to an upper surface of said cover.
The slide switch according to 2 or 3.