JPH0620275Y2 - Printed circuit board switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a small switch, and more particularly to a printed circuit board switch mounted on a printed circuit board.

(Prior Art) Conventionally, as a small switch mounted on a printed circuit board of this type, there has been one as shown in FIGS. 5 to 7, for example.

That is, FIG. 5 shows a printed circuit board switch 3 in which the terminal 2 is fixed to the copper foil wiring without using a fixing plate on the printed circuit board 1. Further, in FIG. 6, the terminals 6 are projected in a line from one surface of the switch main body 5, and the fixing plate 7 is attached to the switch main body 5, and the terminals 6 are attached to the copper foil wiring 10 of the printed circuit board 4 and the fixing plate 7. A printed circuit board switch in which the bent piece 8 is fixed to the copper foil portion 9 for fixing the switch body is shown. Furthermore, the seventh
In the figure, the terminals 12 are arranged in two rows on the bottom surface of the switch main body 11 so as to project, and a fixing plate 13 formed in a U-shape is arranged so as to cover the switch main body 11, and its end surface is provided with the terminal 12
There is shown a switch for a printed circuit board, which is provided in the same direction as the above, and the end face of the fixing plate 13 and the terminal 12 are brought into contact with a copper foil portion of a printed circuit board (not shown) and fixed by soldering.

As an example of the structure of the above-mentioned printed circuit board switch, Japanese Utility Model Publication No. 63-47540, which is a prior application of the present applicant, can be cited.

(Problems to be solved by the invention) However, as shown in FIG. 5, the space between the printed circuit board 1 and the printed circuit board switch 2 is widened during long-term operation, as shown in FIG. The stress is applied to the terminal 3, and the terminal 3 is separated from the copper foil wiring.

Further, in the case where the terminals 6 are arranged in a line as shown in FIG. 6, since the movable contact piece is arranged in series to the converter (not shown), the width of the converter (Z dimension in FIG. 3). It is necessary to make the switch main body 5 larger and the size of the switch main body 5 has to be increased accordingly, which is a problem in reducing the size of the switch.

Further, in the device shown in FIG. 7 in which the terminals 12 are arranged in two rows on the bottom surface of the switch body 11, there is a drawback that the height of the switch itself becomes high.

An object of the present invention is to provide a thin printed circuit board switch which eliminates the above-mentioned problems, is inexpensive, and is miniaturized, and particularly suitable for surface mounting of a printed circuit board.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides a handle above the switch body, and provides a fixed contact piece projecting inwardly on the left and right inner side surfaces of the switch body. At the same time, in a switch that opens and closes the electric path by sliding a converter provided with a movable contact piece, the fixed contact piece (23) is arranged in right and left steps and corresponds to the fixed contact piece (23). The movable contact pieces (28) are arranged in different steps on the left and right sides of the converter (26).

(Operation) According to the present invention, as described above, the left and right fixed contact pieces (23)
Are arranged in different steps with respect to the switch body (21), and the movable contact pieces (28) are also arranged in different steps with respect to the converter (26) corresponding to the fixed contact pieces (23). That is, the movable contact piece (2
Since the storage holes (26b) of 8) are provided in parallel in the opposite direction, the width (Z dimension) of the converter (26) can be reduced.

Also, since the terminals (22) are arranged in different steps in the left and right direction of the switch body (21) with respect to the handle (31), a separate fixing plate bent in a U shape like the conventional one is required. In addition, there is no risk of unreasonable force being applied to the switch terminals or the like, or damage due to the force, and the switch body can be made rigid and securely fixed.

Further, the switching element (26) which moves up and down by the operation of the handle (31) does not laterally swing due to the concave-convex relationship for guiding provided on the switch body (21) or the inner side surface of the cover (25), and does not move accurately. Can move up and down.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a side view of a main portion of a printed circuit board switch according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the printed circuit board switch, and FIG. 3 is a cross-sectional view of the printed circuit board switch. FIG. 4 is a perspective view showing a mounting state of the printed circuit board switch on the printed circuit board.

In the figure, reference numeral 21 denotes a switch body, and fixed contact pieces arranged on opposite sides of the switch body 21 in different stages.
23, and a terminal 22 that is formed integrally with the fixed contact piece 23 and extends to the outside of the switch body 21. A guide groove (concave groove) 21a is formed on the inner surface of the switch body 21, and a sleeve 29 is integrally formed on the upper portion thereof. The switch 26 is housed inside the switch body 21. This convertor
A clip-shaped movable contact piece 28 is attached to the 26 in a stepped manner so as to correspond to the fixed contact piece 23, and a grip is provided on the upper part thereof.
A cam surface that engages with the pressing portion 32 of 31 is formed. Further, the ridges 26a are provided on both sides thereof in the direction parallel to the clip-shaped movable contact piece 28. Furthermore, a cover lid (25) is attached to the switch body 21 in which the converter 26 is housed. The cover (25) is provided with a flat plate portion 25a and a bottom plate portion 25b formed at a right angle from the flat plate portion 25a, and the inner surface of the flat plate portion 25a has a guide groove (for engaging with the ridge 26a). A concave groove) 25c is formed. A spring 30 is arranged between the bottom surface of the converter 26 and the bottom plate portion 25b of the cover 25.

As is apparent from FIG. 3, the fixed contact pieces 23 are planted in the switch body 21 in different steps. The terminal 22 is led out from one of the fixed contact pieces 23, and the height between the fixed contact piece 23 and the outer surface of the switch body 21 in that case is X. Also, fixed armature
The other terminal 22 is led out from the other 23, and the height of the fixed contact piece 23 and the outer surface of the switch body 21 in that case is Y. On the other hand, the switching elements 26 are provided with storage holes 26b alternately, that is, in parallel in opposite directions, and clip-shaped movable contact pieces 28 are fitted therein. Therefore, the clip-shaped movable contact piece
Since the 28 are staggered, the width Z dimension of the converter 26 can be reduced. In addition, the ridge 26a of the converter 26
Is the guide groove 21a of the switch body 21 and the guide groove 25c of the cover (25).
Guided by.

Therefore, when the handle 31 is tilted to the right from the state shown in FIG. 1, the pressing portion 32 of the handle 31 slides and presses on the cam surface 27 of the converter 26 to move the converter 26 downward. Then, the clip-shaped movable contact piece 28 slides between the fixed contact pieces 23 to move the fixed contact piece 23.
Switch.

The printed circuit board switch thus configured is
As shown in the figure, it is mounted on the printed circuit board 33. That is, the above-mentioned terminal 22 is brought into contact with the copper foil wiring 34 provided on the printed board 33 and fixed by soldering.

With the above-described structure, as shown in FIG. 8, the width dimension A'in the conventional printed circuit board switch (see FIG. 6) is changed to the width dimension A in the present invention.
In addition, the depth dimension B'is the depth dimension B.
Is reduced to.

FIG. 9 is a perspective view showing a mounting state of a printed circuit board switch according to another embodiment of the present invention on a printed circuit board, and FIG. 10 is a sectional view of the printed circuit board switch.

In this embodiment, the tip of the terminal 40 led out from the switch body 21 does not project. That is, the terminal 40 is led out to the end portion along the side surface of the switch body 21. Therefore, by bringing the tip end portion of the terminal 40 into contact with the copper foil wiring 51 of the printed circuit board 50 and soldering with the solder 41,
The switch body 21 can be fixed to the printed circuit board 50.

In the above embodiment, the swing type lever is shown as the handle, but instead of this, the handle may be configured as a push button switch without a push button.

The present invention is not limited to the above embodiment,
Various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

(Effects of the Invention) As described in detail above, according to the present invention, the following effects can be achieved.

(1) The left and right fixed contact pieces are arranged in different steps with respect to the switch body, and the movable contact pieces are also arranged in different steps with respect to the converter, corresponding to the fixed contact pieces. Since the storage holes for the pieces can be provided in parallel in the opposite direction instead of in series, the width (Z dimension) of the converter can be reduced. For example, the size can be about 1/3 of that of the conventional one.

In this way, the switch main body can be significantly reduced in size.

(2) Since the terminals are provided in different steps on the handle in the left and right direction of the switch body, there is no need for a separate fixing plate bent in a U shape as in the conventional case, and it is possible to force the switch terminals and other parts with unreasonable force. There is no risk of damage or damage due to the force, and the switch body can be made rigid and securely fixed.

(3) The switch that moves up and down by operating the handle is the switch body,
Alternatively, since the guide lid is provided on the inner side surface of the cover to accurately move up and down without lateral swing, it is possible to provide a switch capable of stable contact for a long period of time.

(4) The movable contact piece bent in a clip shape by the elastic plate has its contact surface self-cleaned each time it is opened and closed with the fixed contact piece.

Therefore, it is suitable as a small-sized switch for minute current,
In addition, stable contact can be maintained for a long time.

(5) Since the fixed contact piece linearly arranged in the switch body and the bottom surface in the vertical direction are provided as a cover, and the cover is removable, it is extremely easy to assemble the converter and the spring.

Therefore, the assembling efficiency is good, and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of a main portion of a printed circuit board switch according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the printed circuit board switch, and FIG. 3 is a cross-sectional view of the printed circuit board switch. FIG. 4 is a perspective view showing a mounting state of the printed circuit board switch on the printed circuit board, FIG. 5 is a side view of a conventional printed circuit board switch, and FIG. 6 is a printed circuit board of another conventional printed circuit board switch. FIG. 7 is a perspective view showing a mounting state on a board, FIG. 7 is a bottom view of still another conventional printed circuit board switch, and FIG. 8 is a difference in size between the conventional printed circuit board switch and the printed circuit board switch of the present invention. FIG. 9 is a plan view showing a mounting state of a printed circuit board switch according to another embodiment of the present invention on a printed circuit board, and FIG. 10 is a sectional view of the printed circuit board switch. 21 ... Switch body, 21a, 25c ... Guide groove (concave groove), 22, 40 ...
Terminal, 23 ... Fixed contact piece, 25 ... Cover lid, 25a ... Flat plate part, 25b ... Bottom plate part, 26 ... Converter, 26a ... Convex body, 26b ... Storage hole, 27 ... Cam surface, 28 ... Clip-shaped movable contact piece , 29 ... Sleeve, 30 ... Spring, 31 ... Handle, 32 ... Pressing part, 33, 50 ... Printed circuit board, 34,
51 ... Copper foil wiring.

Claims (3)

[Scope of utility model registration request] 1. A handle is provided above the switch main body, and a fixed contact piece is provided so as to project inwardly on the left and right inner side surfaces of the switch main body, and a converter provided with a movable contact piece is slid. In a switch for opening and closing an electric circuit, the fixed contact pieces are arranged in a left-right step, and the movable contact pieces are arranged in a left-right step corresponding to the fixed contact piece in a step difference. Board switch. 2. The printed circuit board switch according to claim 1, wherein a concavo-convex portion is provided on the facing surface of the converter, the switch body, and the cover, and the converter is guided by the concavo-convex relationship and moves up and down when the handle is operated. . 3. The printed circuit board switch according to claim 1, wherein the movable contact piece is formed in a clip shape.