JPH0629858Y2 - Pushbutton switch with frame - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a push-button switch provided with a frame for self-standing on a printed circuit board, and in particular, a large number of radial taping frames prior to automatic mounting. Push button switch.

[Conventional technology]

A conventional example of this type of pressure switch is shown in FIG. In the figure, a push button switch 1 includes a switch main body 2 formed by projecting an operation button 4 above a box-shaped housing 3 in which contacts, springs, etc. are incorporated, and a fixed contact inside the housing 3 to extend the housing 3 and Pair of terminals 5 projecting to the side of the
And a frame 6 made of a metal plate which is fixed to the upper surface of the housing 3 and is bent at substantially right angles at both end portions, and both end portions of the frame 6 extending along the side surface of the housing 3 are The push button switch 1 functions as a leg portion 7 for allowing the push button switch 1 to stand on a printed circuit board (not shown).

Since the push-button switch 1 described above is automatically mounted by using an automatic mounter, it is radially taped in a state as shown in FIG. 5 before mounting. That is, by fixing the extending portion of each terminal 5 to one end of a long strip 10 made of thick paper or the like with an adhesive tape 11, a large number of push button switches 1 are arranged at predetermined intervals. Pushbutton switch 1 which is held in a cantilevered manner and taped in this way
When feeding to the automatic Umanto machine, the band-shaped body 10 is intermittently fed using the feed holes 12, and the push-button switches 1 from which the extended portions of the terminals 5 are cut off are sequentially checked and mounted on a printed circuit board.

[Problems to be solved by the device]

By the way, the frame 6 of the push-button switch 1 described above is fixed to the upper surface of the housing 3 and then bent at both end portions to form the leg portion 7. At this time, in order to prevent the entry of the flux due to the capillary phenomenon, A clearance d (see FIG. 5) of about 0.2 mm is defined between the leg portion 7 and the side surface of the housing 3. However, since the strip 10 holding the pushbutton switches 1 in a cantilevered state before mounting is folded in a zigzag manner as shown in FIG. 6, the leg portions of one pushbutton switch 1 where the bottom faces of the housing 3 face each other. The push button switch 1 cannot be automatically extended because the folded strip 10 cannot be extended because the folded strip 10 cannot fit in the clearance d of the other push button switch 1.

The present invention has been made in view of such circumstances, and an object thereof is to securely prevent an accidental fitting of a leg portion of a frame, which may be a concern in a taping state, and to always perform good automatic mounting. It is to provide a push button switch.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides, among the facing surfaces of the leg portion of the frame and the leg portion of the housing,
The projections are formed on at least one of the surfaces.

[Action]

With the above configuration, the leg portion of one push button switch where the bottom surfaces of the housings face each other in the taping state,
Even if it is located near the clearance between the side of the housing and the leg of the other pushbutton switch, the protrusion on the inner surface of the leg and the protrusion on the side of the housing of the latter will regulate the position of the former leg to prevent it from fitting into the clearance. Therefore, there is no risk that the two push-button switches will fit together.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a bottom view of a push button switch with a frame according to an embodiment of the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, FIG. 3 is a view taken in the direction of arrow B in FIG. Parts corresponding to those in FIGS. 6 to 6 are designated by the same reference numerals.

The push-button switch 1 shown in FIGS. 1 to 3 has a leg portion 7 for self-standing which is formed by bending both ends of a frame 6 made of a metal plate at a substantially right angle.
A projection 7a is formed on the inner surface of the, and large and small projections 3a, 3b are formed on the surface of the housing 3 facing the leg portion 7. Here, the protrusion 7a is formed by pressing when the frame 6 is removed by pressing, and the protrusion 3a
Reference characters a and 3b are integrally formed when the housing 3 is molded in a mold. The structure of the parts not particularly described is the same as that of the conventional product already described.

The protrusions 3a, 3b, 7a of the push button switch 1 described above are for preventing the leg portions of other push button switches from being fitted into the clearance d between the housing 3 and the leg portion 7. That is, the push-button switch 1 is radially taped by a strip made of cardboard or the like before mounting, and the strip is folded, so that the bottoms 7 of the housings 3 face each other and the leg portion 7 of the push-button switch 1 faces each other. Although it may be located near the clearance d of the switch 1, it is difficult for the former leg 7 to be located directly in front of the clearance d due to being restricted by the latter projection 7a. Even if the regulation is insufficient, it is impossible to enter the clearance d because it is regulated by the projections 3a and 3b. Therefore, there is no risk that the leg portion 7 of the one push button switch 1 will fit into the clearance d of the other push button switch 1 in the taping state, that is, the push button switches, which have been a problem in the past, will not fit together. It can be avoided without fail, and automatic mounting can always be performed in good condition. Moreover, the protrusions 3a, 3b, 7a
Can be easily formed, and there is no fear of increasing the material cost and the number of steps.

Although the above embodiment describes the case where the protrusion is provided on the side surface of the housing and the inner surface of the leg portion 7, the effect of preventing the fitting of the leg portion 7 by providing the protrusion on only one of them is effective. There is.

[Effect of device]

As described above, according to the present invention, since the projection is formed on the inner surface of the leg portion of the frame and the side surface of the housing, another push button switch is provided in the clearance between the housing and the leg portion in the taping state. Therefore, it is possible to provide a push button switch with a frame that does not cause an accident that the leg portion of the device is fitted, and therefore can always perform good automatic mounting.

[Brief description of drawings]

FIG. 1 is a bottom view of a push button switch with a frame according to an embodiment of the present invention, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, FIG. 3 is a view taken in the direction of arrow B in FIG. 1, and FIG. FIG. 5 is a perspective view of a push button switch with a frame according to a conventional example, FIG. 5 is an explanatory view showing a state in which the push button switch is taped, and FIG. 6 is an explanatory view showing problems of the conventional product. 1 ... Pushbutton switch, 2 ... Switch main body, 3 ... Housing, 3a, 3b ... Protrusion, 4 ... Operation button, 5 ... Terminal, 6 ... Frame, 7 ... Leg part, 7a ... Protrusion 10,
…… Strips.

Claims (1)

[Scope of utility model registration request] 1. A switch main body formed by projecting an operation button above a housing, and fixed to an upper surface of the housing,
Further, it is provided with a metal plate frame whose both end portions extend along the side surface of the housing and serve as legs for self-standing, and terminals protruding from the side of the housing. In a pushbutton switch in which a large number of parts are radially taped at a predetermined interval by fixing the portions to a strip, at least one of the inner surface of the leg portion and the facing surface of the leg portion of the housing. A push button switch with a frame, characterized in that it has a protrusion formed on the bottom.