JP5472701B2 - Slide switch - Google Patents

Description

The present invention relates to a slide switch, and more particularly to a structure in which individual items are stably arranged during assembly to reduce the number of assembling steps and achieve a stable yield.

FIG. 7 shows a conventional slide switch 100. A conventional slide switch includes a case 101, a slider 102, a coil spring 103, a contact 104 (not shown), and a cover 105 (not shown). One side of the case 101 is opened, and a plurality of electrode terminals 106 made of a conductive metal are integrally formed on the bottom surface of the opening portion on the same surface as the bottom surface. One end of the electrode terminal 106 is a substrate on which the slide switch 100 is mounted (not shown). )) By soldering.

The case 101 is provided with a convex rib at the center, divided into two in the short direction, and a slider incorporating a contact 104 (not shown) made of a conductive metal that elastically contacts the electrode terminal 106 on one side. A projecting knob 102, which is an operating portion of the slide switch 100, is incorporated by projecting to the outside. One end of the case 101 is in contact with the side wall of the case, and the other end is in contact with the side wall portion protruding from the slider 102. A coil spring 103 is incorporated so as to be positioned. The cover 105 is fitted to the case 101 so as to cover the cover 105 in a state where the slider 102 and the coil spring 103 are incorporated in the case 101.

The slide switch 100 assembled in this way contacts the contact 104 fitted to the slider 102 by moving the knob formed on the slider 102 in the left direction in FIG. The electrode terminal 106 is switched so that the switch signal can be switched.

Japanese Patent No. 2795477

However, in recent years, the slide switch 100 has been required to be small and have a large switching stroke in accordance with the miniaturization of each electric device, and as a result, a coil spring having a longer overall length than the diameter has been adopted. 100, when incorporating the coil spring 103 into the opening of the case 101, it is usually necessary to reduce the free length and incorporate it into the opening of the case 101 in order to obtain an initial operating force for switching. Further, as shown in FIG. 7B, the coil spring 103 buckles and protrudes from the case 101 and the slider 102 and the cover 105 are not securely fitted to the case 101. As a result, the number of assembly steps increased and the yield deteriorated.

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a switch structure that prevents buckling and popping-out of a coil spring at the time of assembly and enables stable assembly and improvement in yield. To do.

The invention according to claim 1 is a slide switch, which is a substantially rectangular parallelepiped opening in one direction, and a central rib that bisects the first opening and the second opening in the short direction in the opening. An insulating case that is formed and has a plurality of fixed terminals in the first opening and a knob that protrudes outside the case and is slidable in the opening and is incorporated in the first opening A first sliding portion that is continuous with the first sliding portion and is located at one end portion in the longitudinal direction of the second opening portion and is slidable in the longitudinal direction of the second opening portion by filling the one end portion A slider having a second sliding portion, having a first sliding portion and a covering portion continuous to the second sliding portion, a coil spring incorporated in the second opening, and sliding with the slider; A contactor that contacts the fixed terminal with an elastic force; and Consists of a cover for covering the mouth portion, the coil spring is capable of full length used be one large much regardless of the diameter of the coil spring, the coil spring urging said slider to said sliding direction The cover surface portion of the slider covers one half or more of the entire length of the coil spring incorporated in the second opening portion except for a part of the second opening portion.

A slide switch fitted with a coil spring and a contact is incorporated into the opening of the case, and in the slide switch covered with the cover, the slider is provided with a cover surface that covers the coil spring, thereby energizing the coil spring in the compressing direction. Even when incorporated in the case, the coil spring is prevented from buckling or popping out by the covering surface portion, and the assemblability is improved. Further, since the buckling of the coil spring is eliminated, it is possible to use a coil spring having a smaller diameter with respect to the entire length of the coil spring, thereby making it possible to further reduce the height of the slide switch.

In addition, one end of the coil spring contacts the side of the opening of the case, the other end contacts the side wall of the slider, and a part of the coil spring is not covered by the cover surface of the slider. By incorporating a slider in the case, it becomes possible to insert a coil spring from a portion not covered by the covering surface portion, and it is possible to further prevent the buckling or jumping out of the coil spring.

Plan view of a slide switch according to the present invention The top view of the state which removed the cover of the slide switch concerning this invention Sectional drawing in the AA line of FIG. State diagram when incorporating a spring in the cross-sectional view taken along the line AA in FIG. Sectional drawing in the BB line of FIG. The top view of the state which removed the cover in 2nd Example in this invention (A) is the state figure which removed the cover of the conventional slide switch, (b) is sectional drawing in the CC line of (a).

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 to 6 show an embodiment of the present invention. FIG. 1 is a plan view of a slide switch according to the present invention, and FIG. 2 is a plan view of the slide switch according to the present invention with a cover removed. 3 is a cross-sectional view taken along line AA in FIG. 2, FIG. 4 is a state view when a spring is incorporated in the cross-sectional view taken along line AA in FIG. 2, and FIG. 5 is a cross-sectional view taken along line BB in FIG. 6 is a plan view of the second embodiment of the present invention with the cover removed, and FIG. 7 is a state diagram of the conventional slide switch with the cover removed. The slide switch 01 includes a case 10 integrally formed with a fixed terminal 20, a coil spring 30, a contact 40, a slider 50, and a cover 60.

The case 10 is a substantially rectangular parallelepiped having one opening made of an insulating material, and a central rib 11 that bisects the first opening 12 and the second opening 13 in the lateral direction is formed in the opening in the center. The height of the central rib 11 is set to be lower than the height of the four walls forming the opening. The contact portion 21 of the fixed terminal 20 made of a plurality of conductive metals is exposed on the bottom surface of the first opening 12, and its end portion is extended to the outside of the case 10 as an output terminal portion 22. When being mounted, it is soldered and electrically connected to a circuit board of an electric device (not shown). Further, a pinch notch 15 into which a knob 51 of a slider 50 described later is incorporated is formed on the top portion of the first outer wall 14 in the longitudinal direction facing the central rib among the four walls forming the first opening 12. The

The coil spring 30 is made of a stainless material or the like, and is assembled into the case 10 in a state where the entire length is reduced by a certain length when assembled.

The contact 40 has a substantially rectangular flat surface portion 41 formed of a thin plate of conductive metal having elasticity and formed in the center portion. From both sides of the flat surface portion 41, the contact elastic portion 43 is folded in the same direction almost symmetrically. The tip of each contact elastic part 43 is formed in a smooth U shape so that the contact part 21 of the fixed terminal 20 can slide smoothly.

The slider 50 is made of an insulating material, is incorporated in the first opening 12 of the case 10, and has a first sliding portion 52 that is substantially the same shape as the first opening 12 that can be slidably moved by the switching stroke amount of the slide switch 01. The knob 51 is continuous from the first sliding portion 52 and protrudes from the knob 15 to the outside of the case 10. The first sliding portion 52 has a protruding boss 57 for fitting the contact 40 on the bottom surface side, that is, the side facing the fixed terminal formed on the case 10 when assembled. The second sliding portion 53 is continuous from the first sliding portion 52 and is located at one end portion in the longitudinal direction of the second opening portion 13 and fills the one end portion and is slidable in the longitudinal direction of the second opening portion 13. Have The first sliding portion 52 and the second sliding portion 53 are connected to the first sliding portion 52 and the second sliding portion 53, and the second opening in which the slider 50 is slidable by the switching stroke amount of the slide switch 01. A covering surface portion 54 that covers a portion of the portion 13 except for a part thereof is formed.

The cover 60 is made of a thin metal plate, has a flat portion 61 that is substantially the same shape as the opening that covers the opening of the case 10, is bent at a substantially right angle from the end of the flat portion 61, and is formed on the side wall of the case 10. A plurality of locking portions 62 that are locked to the locking protrusions are provided.

The slide switch 01 is completed by assembling these members as follows. First, the slider 50 is incorporated in the case 10. At this time, the slider 50 is assembled in a direction facing the fixed terminal 20 formed in the case 10 with the contact 40 fitted by the protruding boss 16 and the fitting hole 42 assembled.

The slider 50 incorporated in this way is disposed at a position where the second sliding portion one end 55 of the second sliding portion 53 contacts the second opening one end 17, and the second opening other end 18 side is It is not covered by the cover surface portion 54 of the slider 50. As a result, as shown in FIG. 4, the coil spring 30 can be inserted from the second opening other end 18 side with the slider 50 incorporated into the case 10. One end of the coil spring 30 is brought into contact with the other end 56 of the second sliding portion of the slider 50 after the insertion, and then the other end of the coil spring 30 is connected to the other end of the second opening in a state where the coil spring 30 is contracted by a certain amount. It is pressed against the part 18 and incorporated. In this way, the coil spring 30 is housed in the case 10 in a state of being covered by the cover surface portion 54 of the slider 50 except for a part. Thus, most of the coil spring 30 is housed in the case 10 with at least one-half of the entire length of the coil spring being housed covered by the cover surface portion 54, so that the entire length of the coil spring is the diameter of the coil spring. Regardless of the size, it can be assembled without buckling during assembly or after storage, or without jumping out of the case 10 due to buckling. Further, in this state, it becomes easy to fit the engaging portion 62 of the cover 60 to the engaging convex portion of the case 10 so that the flat portion 61 of the cover 60 covers the case opening, and all assembly is performed smoothly. Will be able to.

The slide switch assembled in this way operates as follows. First, when the knob 51 protruding outward is operated against the coil spring 30 in the longitudinal direction of the case 10, the contact 40 fitted to the slider 50 moves, whereby each contact elastic portion 43 is different. The contact portions 21 of the two fixed terminals 20 are brought into contact with each other, whereby electrical switching is performed. Then, by opening the knob 51, the slider 50 returns to the initial state due to the load of the coil spring 30, and electrical switching is performed again to return to the initial state.

Thus, by covering the coil spring 30 with the cover surface portion 54 provided on the slider 50, the coil spring 30 can be prevented from buckling or popping out during assembly, and a smooth assembly is possible.

The present embodiment is a slide switch in which the slider 50 can operate only on one side, but the present invention is not limited to this, and the present invention can also be implemented for a slide switch in which the slider moves in both the left and right directions. Further, in this embodiment, the slider knob portion is continuous with the first sliding portion, but the present invention is not limited to this, and even if it is continuous with the second sliding portion or the cover surface portion as shown in FIG. Good.

The present invention is used in a slide switch that performs electrical switching by sliding a slider using a coil spring, and prevents the coil spring from buckling and popping out by covering the coil spring with a cover portion from the slider. Is available for slide switches that require The present invention can also be used for a switch having an operation on both the left and right sides instead of an operation on only one side.

01 Slide switch 10 Case 11 Central rib 12 First opening 13 Second opening 14 First outer wall 15 Knob notch 17 Second opening one end 18 Second opening other end 20 Fixed terminal 21 Contact 22 Output Terminal part 30 Coil spring 40 Contact 41 Flat part 42 Fitting hole 43 Contact elastic part 50 Slider 51 Knob part 52 First sliding part 53 Second sliding part 54 Cover surface part 55 Second sliding part one end part 56 Second Sliding part other end part 57 Protruding boss 60 Cover 61 Plane part 62 Locking part

Claims (1)

It is a substantially rectangular parallelepiped opening in one direction, and a central rib that bisects the first opening and the second opening in the short direction is formed at the center in the opening, and a plurality of fixings are made in the first opening. An insulating case having a terminal; a knob portion protruding outside the case; and a slidable portion within the opening portion; the first sliding portion incorporated in the first opening portion; and the first sliding portion. A second sliding portion that is continuous from the moving portion and is located at one end portion in the longitudinal direction of the second opening portion, fills the one end portion, and is slidable in the longitudinal direction of the second opening portion; A slider having a sliding portion and a cover portion continuous to the second sliding portion; a coil spring incorporated in the second opening; and a contactor that slides with the slider and contacts the fixed terminal with an elastic force. consists of a cover that covers the opening, the coil scan purine Has an overall length can be used even those large much regardless of the diameter of the coil spring, the coil spring biasing the slider in the sliding direction, the masked portion of the slider is the first A slide switch characterized by covering at least one-half of the total length of the coil spring incorporated in the second opening except for a part of the two openings.

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