JPH05327007A - Interrupter with terminal - Google Patents

Abstract

(57) [Abstract] [Purpose] Aim to reduce costs and improve yield, and to provide a large number of rationalized and inexpensive interrupters with terminals. [Structure] A light emitting element, a light receiving element, etc. are arranged on a flat conductive member, and a method is adopted in which they are inserted and fixed in a housing case so as to be opposed to each other by lead forming, and external terminals are attached to the housing case. In addition to reducing the cost, the rationalization has been made possible by reducing the manual process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of an interrupter with a terminal used for a position detecting sensor of an office automation equipment or the like.

[0002]

2. Description of the Related Art An interrupter with a terminal used for a position detecting sensor of an office automation equipment has a structure as shown in FIG. In other words, the housing case 1 is provided with the hollow portions 2 that project in opposition to each other, and the light emitting element 3 and the light receiving element 4 are arranged in this member 2 so that the optical axes of the two are aligned. ..

In order to arrange the light emitting element 3 and the light receiving element 4 in the housing case 1 having the hollow portions 2 facing each other, the light emitting element 3 and the light receiving element 4 are mounted in an upright state by a printed circuit board 5 on which a predetermined conductive pattern (not shown) is formed. Then, a method of inserting and fixing the printed circuit board 5 into the housing case 1 having a special shape is adopted.

A light emitting element 3 and a light receiving element 4 are arranged in a symmetrical hollow portion 5 formed in the housing case 1 so that their optical axes are the same.

A light emitting element 3 and a light receiving element 4 are provided on a printed circuit board 5.
In order to mount the device upright, the external terminals 7 of the respective elements are inserted into the through holes 6, and the portions protruding outside the printed circuit board 5 are fixed by soldering or the like. An external terminal 9 is arranged at the contact portion A between the end 8 of the housing case 1 and the printed circuit board 5 to electrically connect the elements 3 and 4 to an external electronic device.

The light-emitting element 3 and the light-receiving element 4, which are arranged in the hollow portion 2 of the housing case 1 and face each other, have their optical axes aligned with each other, and the hollow portion 2 portions facing each other so that light can pass therethrough. Is naturally light transmissive. Such an assembly protects both elements by press fitting a protective resin as shown in FIG. 1 and increases mechanical strength.

Such an interrupter with a terminal composed of the light emitting element 3 and the light receiving element 4 uses a so-called SMD for mounting a chip resistor, a chip capacitor or the like, and both elements use not only a single combination but also a plurality of combinations. In some cases.

[0008]

The interrupter with a terminal having such a structure requires one light receiving element, a light emitting element, a printed circuit board, a terminal, a housing case, and the like, so that the number of parts is large, and thus the number of processing points is large and 3 Manufacturing costs for jigs and tools are high. That is, as the jigs and tools, since they are used as position detection sensors, various kinds of jigs and jigs such as light emitting elements, optical axis alignment of the light emitting elements, and terminal alignment are required.

Further, defects in the step of soldering to the printed circuit board and defects in the appearance such as the inclination of the terminals also increase the cost of the product. Furthermore, since the light emitting element and the step of inserting the light emitting element into the printed circuit board and the step of cutting the leads are indispensable, automation is difficult and mass productivity is not high.

The present invention has been made under such circumstances, and it is an object of the present invention to provide an inexpensive interrupter with a terminal which improves the production unit cost and yield.

[0011]

A light emitting element fixed to a flat conductive member, an optical axis of the light emitting element, another position of the conductive member which coincides with the optical axis of the light emitting element, and A light-receiving element fixed to another position of the conductive member, a terminal electrode portion installed on the conductive member, the light-emitting element and the light-receiving element, and extending along a flat surface of the conductive member. And a hollow housing case for assembling the conductive member and a facing portion of the light emitting element and the light receiving element, which is formed by erecting the lead portion, and a hollow housing case provided in the housing case. The interrupter with a terminal according to the present invention is characterized in that the protruding portion that accommodates the facing portion and the terminal that is electrically connected to the terminal electrode portion and is led out to the outside of the housing case.

Another feature is that the housing case and a flat conductive member portion that covers the opening are fixed, and the resin case that covers the opening of the housing case is also characteristic.

[0013]

A light emitting element, a light receiving element, and an external terminal are mounted on a so-called lead frame, that is, a conductive member, so that they are arranged on the same plane, inserted into and fixed to a housing case, and then the housing of the external terminal is press-fitted. There is.

Therefore, the material cost, processing cost, jig cost, and the like can be reduced, and the product cost can be reduced.
In addition, the product structure can be rationalized compared to the conventional product, and mass production becomes possible.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an interrupter with terminals according to the present invention will be described with reference to FIGS. 2 is a cross-sectional view of the interrupter with a terminal after an intermediate step, FIGS. 3 and 4 are assembly drawings, and FIG. 5 is a completed cross-sectional view of a main part.

That is, in the interrupter with a terminal according to the present invention, a method is adopted in which the light emitting element 3 and the light receiving element 4 are arranged so that their optical axes coincide with each other in the hollow portion 2 projecting opposite to the housing case 1. Has been.

When arranging the light emitting element 3 and the light receiving element 4, the light emitting element 3 and the light receiving element 4 are placed in a flat state on a lead frame, that is, a conductive member 5 on which a predetermined conductive pattern (not shown) is formed. First, after mounting, a method is adopted in which the flat conductive member 5 is placed in an upright state by a lead forming process, and then inserted and fixed in the housing case 1 having a special shape.

The housing case 1 having a special shape accommodates the light emitting element 3 and the light receiving element 4 in the upright state, and the light emitting element 3 and the light receiving element 4 are arranged in the hollow portion 2 formed so as to project symmetrically. Then, both optical axes are made the same. The hollow part 2 is
Naturally, the light emitted from both elements is transparent.

FIG. 3 shows a state in which the light emitting element 3 and the light receiving element 4 are mounted on the conductive member 5, and the hatched portion is unnecessary and will be omitted later. FIG. 4 shows the light emitting element 3 and the light receiving element 4 in the upright state by the lead forming process, and the state in which the unnecessary conductive member 5 portion is removed is clarified.

Upright light emitting element 3 as shown in FIG.
The housing case 1 on which the light receiving element 4 is mounted and the conductive member 5 are fixed by a heat treatment or a caulking process after the conductive member 5 is inserted, and then the external terminal 6 is press-fitted as shown in FIG. 2 is a sectional view of FIG. In addition, the caulking step in fixing the housing case 1 and the conductive member 5 is
As shown in FIG. 2, the protrusion 7 provided on the housing case 1 is used.

The external terminal 6 is electrically connected to the terminal electrode portion 8 provided on the conductive member 5 and is electrically connected to the light emitting element 3 and the light receiving element 4 which are mounted, and can be connected to an external electronic device. To

Next, another embodiment shown in FIG. 5 will be described. In this embodiment, the method of inserting the light emitting element 3 and the light receiving element 4 mounted on the flat conductive member 5 by the lead forming process and the light receiving element 4 upright and then inserting and fixing the light emitting element 3 and the light receiving element 4 in the housing case 1 having the hollow portion 2 is not changed. ,
There is a difference in the installation method of the external terminal 6 for connection with an external electronic device.

That is, the lid 9 made of resin or the like is press-fitted into the bottom of the housing case 1 in which the hollow portion 2 is provided, and the outer terminals 6 use outer leads formed on the conductive member 5. .. The lid 9 and the housing case 1 are integrated with each other by, for example, fitting the male and female projections and recesses together or by a caulking process.

Such an interrupter with a terminal composed of the light emitting element 3 and the light receiving element 4 is a so-called SMD (Surface) on which a chip resistor, a chip capacitor and the like are mounted.
Mount Device Besides applying to mounting device,
The combination of the light emitting element 3 and the light receiving element 4 is not limited to a single combination, but a plurality of combinations may be used in some cases.

[0025]

According to the conventional method, the light receiving element, the light emitting element, and the terminal are soldered to the printed circuit board provided with the conductive pattern, and then inserted and fixed in the housing case. In addition to a large number of tools, many kinds of jigs and tools are required, rationalization is difficult, and mass productivity is poor.

On the other hand, in the present invention, since the wiring connection of each component uses the conductive member, the printed circuit board and unnecessary terminals can be eliminated, so that the material cost, the processing cost, and the cost of the interrupter with terminals can be reduced. Will be possible. In addition, the reduction of manual processes enables rationalization, which improves mass productivity. Also, the yield is improved, which contributes to cost reduction.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a conventional interrupter with a terminal.

FIG. 2 is a sectional view of an interrupter with terminals according to the present invention.

FIG. 3 is a perspective view showing an assembling process of the interrupter with terminals according to the present invention.

FIG. 4 is a perspective view showing an assembly process of the interrupter with terminals according to the present invention, which is subsequent to FIG.

FIG. 5 is a sectional view showing another embodiment of the interrupter with terminals according to the present invention.

[Explanation of symbols]

 1: Housing case, 2: Hollow part, 3: Light emitting element, 4: Light receiving element, 5: Conductive member, 6: External terminal, 7: Protrusion, 8: Terminal electrode part, 9: Lid part.

Claims (3)

[Claims] 1. A light emitting element fixed to a flat conductive member, an optical axis of the light emitting element, another position of the conductive member which coincides with the optical axis of the light emitting element, and another position of the conductive member. A light-receiving element fixed to the position, a terminal electrode portion provided on the conductive member, and a lead portion electrically connected to the light-emitting element and the light-receiving element and extending along a flat surface of the conductive member. , A facing portion of the light emitting element and the light receiving element, which is formed by erecting the lead portion, a hollow housing case for assembling the conductive member, and a housing case provided to accommodate the facing portion of the light emitting element and the light receiving element And a terminal electrically connected to the terminal electrode portion and led out to the outside of the housing case. 2. An interrupter with a terminal, wherein said housing case and a flat conductive member portion covering said opening are fixed. 3. An interrupter with a terminal, comprising a resin case for covering an opening of the housing case.