KR100589451B1 - Push button switch - Google Patents

Abstract

An object of this invention is to provide the push button switch which is easy to acquire a material, and is cheap and easy to manufacture.

In order to solve the said subject, in the pushbutton switch of this invention, in the 1st fixed contact 2, the 1st contact part 2a is arrange | positioned near the outer periphery of the opening part 1f, and the 1st contact part 2a When the first connecting portion 2b and the first terminal portion 2c connected to the first connecting portion 2b are formed extending in a linear direction (straight line S2 direction), the first and second fixed contacts 2, 3 Since the first and second contact portions 2a and 3a can be disposed on a straight line S1 orthogonal to the straight line S2 direction, the first contact portion 2a of the first fixed contact 2 is a metal plate 11 as compared with the prior art. The longitudinal dimension of can be made small, the acquisition of material is easy, and a cheap thing is obtained.

Description

Push Button Switches {PUSH BUTTON SWITCH}

1 is a front view according to a first embodiment of a push button switch of the present invention.

Fig. 2 is a side view related to the first embodiment of the push button switch of the present invention.

Fig. 3 is a top view related to the first embodiment of the push button switch of the present invention.

4 is a bottom view relating to the first embodiment of the push button switch of the present invention.

5 is a sectional view showing the principal parts of a first embodiment of a push button switch of the present invention.

FIG. 6 is an enlarged cross-sectional view of part A of FIG. 5.

7 is an explanatory diagram showing a mounting state according to the first embodiment of the push button switch of the present invention.

8 is an explanatory view showing a first step of manufacturing a fixed contact and a housing according to the first embodiment of the push button switch of the present invention.

9 is an explanatory diagram showing a second process of manufacturing the fixed contact and the housing according to the first embodiment of the push button switch of the present invention.

10 is an explanatory diagram showing a first step of manufacturing a fixed contact and a housing according to the second embodiment of the push button switch of the present invention.

It is explanatory drawing which shows the 2nd process of manufacturing a fixed contact and housing which concerns on the 2nd Example of the pushbutton switch of this invention.

12 is a front view related to the third embodiment of the push button switch of the present invention.

Fig. 13 is a side view related to the third embodiment of the push button switch of the present invention.

Fig. 14 is a top view related to the third embodiment of the push button switch of the present invention.

Fig. 15 is a bottom view related to the third embodiment of the push button switch of the present invention.

Fig. 16 is a rear view related to the third embodiment of the push button switch of the present invention.

Fig. 17 is an explanatory diagram showing a mounting state according to the third embodiment of the push button switch of the present invention.

18 is a side view of a conventional push button switch.

19 is a sectional view of principal parts of a conventional push button switch.

20 is an explanatory diagram showing a first process of manufacturing a fixed contact and a housing related to a conventional push button switch.

Fig. 21 is an explanatory view showing a second process of manufacturing a fixed contact and a housing related to a conventional push button switch.

* Explanation of symbols on the main parts of the drawing

1: housing 1a: front

1b: bottom wall 1c: side wall

1d: top wall 1e: back wall

1f: opening 1g: recess

1h: projection 1j: short circuit

2: first fixed contact 2a: first contact portion

2b: first connection portion 2c: first terminal portion

3: second fixed contact 3a: second contact portion

3b: second connection portion 3c: second terminal portion

4: third fixed contact 4a: third contact portion

4b: third connection part 4c: third terminal part

R1: 4th connection part 5: movable contact

6: cover 6a: hole

6b: front panel 6c: side panel

6d: protrusion piece 6e: bending piece

6f: cutout 6g: small hole

7: operating member 7a: operating unit

7b: shading part 7c: pressurizing part

8: printed board 8a: hole

9: solder 11: metal plate

11a: through hole 12: connection portion

12a: cutout 13: feed hole

S1 to S4: straight line

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a push button switch suitable for use in mounting on a printed board of various electronic devices by surface mounting.

Referring to the drawings of a conventional push button switch, FIG. 18 is a side view of a conventional push button switch, FIG. 19 is a sectional view of main parts of a conventional push button switch, and FIG. 20 is a view of manufacturing a fixed contact and housing related to a conventional push button switch. Explanatory drawing which showed 1st process. FIG. 21: is explanatory drawing which shows the 2nd process of the stationary contact and housing manufacture which concern on the conventional pushbutton switch.

Next, when the structure of the conventional push button switch is demonstrated based on FIG. 18, FIG. 19, the housing 51 which consists of molded articles of synthetic resin forms a box shape, and the bottom wall 51a and the bottom wall 51a from all sides are shown. The side wall 51b extended upward and the opening part 51c formed in the upper center part are provided.

The first fixed contact 52 made of a metal plate is, in particular, a pair of contact portions 52a arranged at intervals as shown in FIG. 20, and a pair of connecting portions 52b connected to the pair of contact portions 52a. And a pair of terminal portions 52c extending to both sides from the pair of contact portions 52b.

Moreover, the 2nd fixed contact 53 which consists of metal plates is the contact part 53a located between a pair of contact part 52a especially as shown in FIG. 20, and the connection part 53b connected to this contact part 53a. And a pair of terminal portions 53c extending to both sides from the connecting portion 53b.

The contact portions 52a and 53a of the first and second fixed contacts 52 and 53 are located between the terminal portions 52c and 53c and the straight lines S5 and S6 in the direction in which the terminal portions 52c and 53c extend. It is arrange | positioned on the straight line S7 which is the same direction as this.

Moreover, the connection part 52b which connects the contact part 52a and the terminal part 52c is comprised from the part extended in the direction orthogonal to the straight line S5 from the contact part 52a, and the part extended in the straight line S5 direction, The connection part 53b which connects the contact part 53a and the terminal part 53c is comprised from the part extended in the direction orthogonal to the straight line S6 from the contact part 53a, and the part extended in the straight line S6 direction.

The first and second fixed contacts 52 and 53 are connected with the connecting portions 52b and 53b embedded in the housing 51, and the contact portions 53a and 53a are provided with the opening 51c on the bottom wall 51a. While exposed to the inside, the terminal portions 52c and 53c protrude out of the housing 1 and are bent downward.

In addition, although not shown here, the movable contact is accommodated in the opening part 51c, and the movable contact is operated by the operation member mounted so that the movable contact can move with respect to the housing 1, and the 1st, 2nd fixed contact 52, 53 ) ON and OFF.

Next, the manufacturing method of the fixed contact and housing which concerns on the conventional pushbutton switch which has such a structure is demonstrated based on FIG. 20, 21. First, the hoop-shaped metal plate 55 in the 1st process shown in FIG. Silver punching process is performed.

Then, as shown in FIG. 20, the first fixed contact 52 is formed at one side of the metal plate 55, and the second fixed contact 53 is formed at the other side of the metal plate 55.

And the 1st, 2nd fixed contact 52 and 53 are formed in the state in which the contact part 52a, 53a is arrange | positioned in a line in the longitudinal direction (straight line S7) of the metal plate 55 center part.

Moreover, the connection parts 52b and 53b extend in the width direction and the longitudinal direction orthogonal to the straight line S7, and are connected to the pair of terminal parts 52c and 53c.

That is, the pair of terminal portions 52c and 53c extend in the longitudinal direction of the metal plate 55 and are disposed to face each other, while the contact portions 52a and 53a are arranged in the longitudinal direction (straight line S7) at the center of the metal plate 55. Extending in parallel to the pair of terminal portions 52c and 53c.

In addition, both ends of the terminal portions 52c and 53c are connected to the metal plate 55. Next, the metal plate 55 having such a configuration is sequentially formed in a molding die (not shown) by using the transfer hole 56. It transfers and forms the housing | casing 51 by shaping | molding process with respect to the metal plate 55 in the 2nd process shown in FIG.

At this time, the side surface and the upper surface of the contact portion 52a are surrounded by a molding die to prevent resin from flowing into the contact surface.

Then, the connecting portions 52b and 53b of the first and second fixed contacts 52 and 53 are embedded in the bottom wall 51a, and the contact portion 53a is exposed to the center portion of the opening 51c, and a pair of The contact portion 52a is exposed near the outer circumference of the opening portion 51c with the contact portion 53a interposed therebetween, and the terminal portions 52c and 53c protrude out of the housing 51.

In addition, in order to prevent the resin from flowing onto the contact surface in the above-mentioned molding die, it is necessary to provide the metal plate 55 in the longitudinal direction on the side surface of the contact portion 52a by the width for the mold to be pressed.

Next, the first and second fixed contacts 52 and 53 are cut off from the metal plate 55 by cutting at the double-dotted line Z1 position shown in FIG. 21, and then the terminal parts 52c and 53c are bent to complete the manufacture. (See, for example, Patent Document 1 (Japanese Patent Publication No. 2798814)).

The conventional push button switch has a straight line S7 parallel to the direction (straight line S6) in which the pair of contact portions 52a of the first fixed contact 52 extends the terminal portion 52c with the contact portion 53a interposed therebetween. Since it forms in the phase, there exists a problem that the metal plate 55 becomes long in a longitudinal direction, and acquisition of a material is difficult and costs are high.

Moreover, the connection part 52b which connects a pair of contact part 52a and the terminal part 52c of the 1st fixed contact 52 is a part extended from the contact part 52a in the direction orthogonal to the straight line S5, and Since it is comprised by the part extended in the straight line S5 direction, the connection part 52b becomes long, the acquisition of material becomes difficult and expensive, and there exists a problem that the structure is complicated and manufacture of a molding die becomes difficult.

Therefore, an object of the present invention is to provide a push button switch which is easy to obtain a material and which is cheap and easy to manufacture.

Means to solve the problem

As a first solution for solving the above problems, a housing made of an insulating material having an opening, first and second fixed contacts embedded and mounted in the housing, movable contacts housed in the opening, and movably mounted in the opening And a manipulation part for manipulating the movable contact, wherein the first fixed contact is connected to the first contact part exposed in the opening, the first contact part, and the first connection part embedded in the housing and the first connection part. And a first terminal portion protruding out of the housing, wherein the second fixed contact is a second contact portion exposed in the opening, a second connection portion connected to the second contact portion and embedded in the housing; A second terminal portion which is connected to a second connection portion and protrudes out of the housing, wherein the first fixed contact includes the first contact portion having a peripheral circumference of the opening; The first contact portion and the first terminal portion connected to the first connection portion are formed to extend in a linear direction from the first contact portion, and the second contact portion of the second fixed contact portion is disposed at the center of the opening portion. It was made into the configuration.

As a second solution means, the second fixed contact is formed by extending the second connecting portion and the second terminal portion connected to the second connecting portion in a linear direction from the second contact portion, and the second connecting portion and the second Each of the terminal portions was arranged in parallel with each of the first connecting portion and the first terminal portion.

As a third solution, said third fixed contact is provided, said third fixed contact being a third contact portion exposed near the outer periphery of said opening, a third connecting portion connected to said third contact portion and embedded in said housing. And a third terminal portion which is connected to the third connecting portion and protrudes out of the housing, wherein the third fixed contact is disposed at a position facing the first fixed contact with the second fixed contact therebetween, Each of the three connecting portions and the third terminal portion was arranged in parallel with each of the first connecting portion and the first terminal portion.

As a 4th solution, the said 1st, 3rd fixed contact was comprised by the 4th connection part.

As a 5th solution means, the said 2nd terminal part of the said 2nd fixed contact was set as the structure arrange | positioned in parallel with the said 1st terminal part through the said 2nd contact part.

As a sixth solution means, the terminal portion was configured to be bent along the terminal portion lead-out surface of the housing.

Embodiment of the invention

1 is a front view related to the first embodiment of the push button switch of the present invention, and FIG. 2 is a side view related to the first embodiment of the push button switch of the present invention. 3 is a top view related to the first embodiment of the push button switch of the present invention, and FIG. 4 is a bottom view related to the first embodiment of the push button switch of the present invention.

5 is a sectional view of principal parts of a first embodiment of a push button switch of the present invention, FIG. 6 is an enlarged sectional view of part A of FIG. 5, and FIG. 7 is a mounting of a first embodiment of a push button switch of the present invention. It is explanatory drawing which showed the state.

8 is an explanatory view showing a fixed contact according to the first embodiment of the push button switch of the present invention and a first step of manufacturing the housing, and FIG. 9 is a fixed contact according to the first embodiment of the push button switch of the present invention. And FIG. 10 is an explanatory view showing a second step of manufacturing the housing, FIG. 10 is an explanatory view showing a first step of manufacturing the housing and the fixed contact according to the second embodiment of the push button switch of the present invention, and FIG. It is explanatory drawing which showed the 2nd process of manufacturing a fixed contact and housing which concern on 2nd Example of a switch.

Next, the configuration of the first embodiment of the push button switch of the present invention will be described with reference to Figs. 1 to 7, wherein the housing 1 made of a molded article made of synthetic resin forms a box shape and has a front face 1a located on the side, A bottom wall 1b extending from the front face 1a to the rear side, a pair of side walls 1c extending upward from an end of the bottom wall 1b, an upper wall 1d formed between the pair of side walls 1c, The rear wall 1e which blocks a back side, the opening part 1f formed in the center part of the front surface 1a, the recessed part 1g formed in the front lower surface of the bottom wall 1b, and the protrusion 1h formed in the front surface 1a are provided.

In addition, notched short-circuited portions 1j are formed in the corner portions facing the front face 1a, the bottom wall 1b, and the side wall 1c.

Each of the first, second, and third fixed contacts 2, 3, and 4 made of a metal plate has a first contact portion 2a and a second contact portion 3a, which project toward the front side, in particular, as shown in FIG. , The first contact portion 2b, the second connection portion 3b, the third connection portion 4b connected to each of the third contact portion 4a and the first, second and third contact portions 2a, 3a, and 4a. ) And a first terminal portion 2c, a second terminal portion 3c, and a third terminal portion 4c connected to each of the first, second and third connecting portions 2b, 3b, and 4b.

And the 1st, 2nd, 3rd contact part 2a, 3a, 4a of the 1st, 2nd, 3rd fixed contact 2, 3, 4 is arrange | positioned on the straight line S1 as shown in FIG. At the same time, the first, second, third connecting portions 2b, 3b, 4b and the first, second, third terminal portions (from each of the first, second, third contact portions 2a, 3a, 4a) 2c, 3c, and 4c are extended and arrange | positioned in the straight line S2, S3, S4 direction orthogonal to the straight line S1.

As a result, the 1st, 2nd, 3rd connection parts 2b, 3b, 4b and the 1st, 2nd, 3rd terminal parts 2c, 3c, 4c are arrange | positioned in parallel with each other.

In the present embodiment, the first and third fixed contacts 2, 4 are connected by the fourth connection part R1 and each uses a common contact, thereby improving reliability as a switch, but the fourth connection part R1 You can get rid of

Moreover, as for the 1st, 2nd, 3rd fixed contact 2, 3, 4, the 1st, 2nd, 3rd connection part 2b, 3b, 4b and the 4th connection part R1 are attached to the back wall 1e. Buried and mounted, the second contact portion 3a is exposed to the center portion of the opening portion 1f (center portion of the rear wall 1e), and the first and third contact portions 2a and 4a form the second contact portion ( It is exposed by the outer periphery vicinity of the opening part 1f (outer periphery of the back wall 1e) through 3a).

Moreover, the 1st, 2nd, 3rd terminal parts 2c, 3c, and 4c protrude outward from the bottom wall 1b of the housing | casing 1, and are respectively rearward along the lower surface of the bottom wall 1b which is a terminal part lead-out surface. The lower surfaces of the bent and bent first, second, and third terminal portions 2c, 3c, and 4c are located below the lower surface of the bottom wall 1b (see, in particular, FIG. 6).

In the present embodiment, three first, second, and third fixed contacts 2, 3, and 4 have been described, but two first, second fixed contacts 2, 3, or second, You may comprise with the 3rd fixed contact 3,4.

The movable contact 5 made of a spring-like or metal plate having a dome shape is accommodated in the opening 1f of the housing 1, and as shown in FIG. 5, the center portion faces the second contact portion 3a and the outer peripheral portion is formed. It is arrange | positioned in the state contacted with the 1st, 3rd contact parts 2a and 4a.

The cover 6, which is entirely c-shaped, made of a metal plate, has a plate-shaped front plate 6b having a hole 6a at its center, and a pair bent backward at right angles from both ends of the front plate 6b. Side plate 6c, a projecting piece 6d protruding downward from the lower end of the pair of side plates 6c, and a pair of bent pieces bent rearward at opposite lower corners of the front plate 6b ( 6e), a notch 6f formed in the pair of side plates 6c at a position opposite to the bent piece 6e, and a small hole 6g formed in the corner portion of the front plate 6b.

The cover 6 has a front plate 6b disposed at the front face 1a of the housing 1 so as to close the opening 1f with the front plate 6b, and the small hole 6g of the housing 1. The projection 1h is inserted through and is attached to the housing 1 by thermal caulking the tip of the projection 1h.

And when the cover 6 is attached to the housing 1, the bending piece 6e is arrange | positioned in the recessed part 1g, and the lower surface of the bending piece 6e is located below the lower surface of the bottom wall 1b. At the same time, the surfaces of the first, second, and third terminal portions 2c, 3c, and 4c are flush with the lower surface.

In addition, since the short part 1j is formed in the both edge parts of the housing 1 which the back surface of the bending piece 6e and the protrusion piece 6d oppose at this time, the cover 6 and the housing on the mounting surface side A gap is formed in the fitting portion of the front face 1a of (1).

Moreover, when the cover 6 is attached to the housing 1, a pair of side plates 6c are arrange | positioned so that the outer periphery of the side wall 1c may be covered, and the protrusion 6d may be the lower surface of the bending piece 6e. It becomes the state which protruded below and beyond, and it is possible to visually see the bending piece 6e from the side surface through the notch 6f.

In addition, in this embodiment, although the bending piece 6e was described as having a pair formed in the lower corner part of the front plate 6b, one bending piece 6e may be provided in the arbitrary part of the lower part of the front plate 6b, or You may form two or more.

The operation member 7, which is a push button made of a molded product of synthetic resin, has an operation portion 7a, a shading portion 7b formed at the rear side of the operation portion 7a and a pressing portion protruding rearward from the center portion of the operation portion 7a. 7c), the operation member 7 includes the housing 7b and the pressing portion 7c in the opening 1f, and the operation portion 7a protrudes outward from the hole 6a. 1) It is mounted to move back and forth with respect to.

And the push button switch of this invention which has such a structure is formed with the extremely small thing of the transverse dimension about 4.5 mm and the height dimension about 3.5 mm, for example.

In the push button switch of the present invention having such a configuration, as shown in FIG. 7, the lower surface side of the bottom wall 1b of the housing 1 is opposed to the printed board 8, and the first, second, and third terminal portions are provided. (2c, 3c, 4c) and the bent piece 6e are mounted on the printed board 8, and the 1st, 2nd, 3rd terminal parts 2c, 3c, 4c and the bent piece 6e are a printed board ( 8 is soldered to and mounted on a conductive pattern (not shown) formed on 8) so that the push button switch is surface mounted on the printed board 8.

At this time, the bent piece 6e is formed by soldering using an outer bent edge portion that does not face the front face 1a of the housing 1 so that only the surface side of the bent piece 6e is soldered.

Then, when soldering 9 to the bent piece 6e, the front piece 1a of the housing 1 is covered with the bent piece 6e, so that flux is difficult to penetrate into the opening 1f. .

Further, since the gap is formed in the fitting portion of the cover 6 and the housing 1 on the mounting surface by the notch 6f and the shorting portion 1j of the housing 1, the creepage distance of the flux is largely secured. can do.

When mounting the push button switch, the lower end of the bending piece 6e and the lower surface of the first, second and third terminal portions 2c, 3c, and 4c are lower than the lower surface of the housing 1 (bottom wall 1b). Since the lower surface (bottom wall 1b) of the housing 1 protrudes and floats away from the printed board 8, it is difficult to transmit the flux to the outer circumferential surface of the housing 1 so that the flux penetrates into the opening 1f. At the same time, the switch does not incline around the lower surface of the housing 1 due to the difference in the melting time of the solder when passing through the reflow furnace.

In addition, at the time of surface mounting of the push button switch, the projection piece 6d is inserted through the hole 8a of the printed board 8, so that positioning of the push button switch with respect to the printed board 8 can be surely performed. .

And when the operation part 7a of the operation member 7 is pressed in the direction parallel to the printed board 8, the dome-shaped movable contact 5 will be pressed, and the center part of the movable contact 5 will reverse operation.

As a result, in the state where the outer peripheral part of the movable contact 5 is in contact with the first and third contact parts 2a and 4a, the center part is moved to be in contact with the second contact part 3a and the first and third contact parts ( Between 2a, 4a and the 2nd contact part 3a is turned ON.

Moreover, when the pressurization of the operation part 7a is released, the movable contact 5 will return to an original state by its spring property, and the operation member 7 will also be returned to an original state, and the 1st, 3rd contact part ( The state between 2a and 4a and the second contact portion 3a is turned off.

Next, a method of manufacturing the fixed contact and the housing according to the first embodiment of the push button switch of the present invention will be described with reference to FIGS. 8 and 9. First, the hoop-shaped metal plate 11 in the first step shown in FIG. 8 is described. ) Is punched and extruded.

Then, as shown in Fig. 8, the first, second and third fixed contacts 2, 3 and 4 are the first, second and third contact portions 2a, 3a and 4a protruding immediately in front of the ground. It is formed in parallel with each other in the width direction in the state arrange | positioned in a line in the width direction (straight line S1) orthogonal to the longitudinal direction of the temporary metal plate 11. As shown in FIG.

As a result, the first, second, third connecting portions 2b, 3b, 4b and the first, second, third terminal portions (1) from each of the first, second, third contact portions 2a, 3a, 4a ( 2c, 3c, and 4c are extended and arrange | positioned in parallel with the longitudinal direction (straight line S2, S3, S4 direction) of the metal plate 11, and are arrange | positioned.

That is, when the 1st, 2nd, 3rd contact parts 2a, 3a, 4a are arrange | positioned in a line in the width direction (straight line S1) orthogonal to the longitudinal direction of the metal plate 11, 1st, 2nd, 3rd Compared with the contact portions arranged in the longitudinal direction of the metal plate 11, the metal plate 11 can be shortened in the longitudinal direction, and the acquisition of materials is easy, resulting in an inexpensive fixed contact structure.

In addition, the ends of the first, second, and third terminal portions 2c, 3c, and 4c are connected to the metal plate 11, and the other ends of the first and third contact portions 2a and 4a are formed of the metal plate 11, respectively. It is connected to the metal plate 11 by the pair of connection part 12 extended in the longitudinal direction, and the 1st, 3rd contact parts 2a and 4a are connected by the 4th connection part R1.

Next, the metal plate 11 having such a configuration is sequentially transferred to a molding die (not shown) using the transfer hole 13, and is formed by forming the metal plate 11 on the metal plate 11 in the second step shown in FIG. 9. A housing 1 having the configuration shown in Figs. 1 to 7 is formed.

At this time, it is necessary to surround the upper and side surfaces of the contact portions 2a and 4a with a mold to be molded, and to prevent resin from flowing onto the contact surface. A mold dam space for this purpose is formed in the longitudinal direction of the metal plate 11. It can form in the direction orthogonal to it, the width of the housing 1 of a longitudinal direction can be made small, and the material yield of the metal plate 11 can be improved.

Then, the first, second and third connecting portions 2b, 3b and 4b of the first, second and third fixed contacts 2, 3 and 4 and the fourth connecting portion R1 and a part of the connecting portion 12 Is embedded in the rear wall 1e, the second contact portion 3a is exposed to the center portion of the opening 1f (center portion of the rear wall 1e), and the first and third contact portions 2a and 4a Exposed to the outer periphery of the opening 1f (the outer periphery of the rear wall 1e) with the two contact portions 3a interposed therebetween, and also the first, second and third terminal portions 2c, 3c, 4c and the connecting portion 12. Is in a state protruding out of the housing 1.

In the insert molding step, the first, second, and third connecting portions 2b, 3b, and 4b are formed with through holes 11a punched in the plate thickness direction by the metal plate 11, and the through holes 11a. Since the resin flows into and solidifies in the inside), even if a large force is applied in the drawing direction of the terminal during operation, the cross-push strength can be increased without dropping the switch.

Next, the first, second and third fixed contacts 2, 3 and 4 are cut off from the metal plate 11 by cutting at the double-dotted line Z1 position shown in FIG. 9, and then the first, second and third If the terminal portions 2c, 3c, 4c are bent along the bottom wall 1b of the housing 1, the manufacture is completed.

In addition, when the connection part 12 is cut | disconnected, the cutting part 12a is in the state exposed from the upper wall 1d as shown in FIG.

10 and 11 show a manufacturing method of the fixed contact and the housing according to the second embodiment of the push button switch of the present invention, and the manufacturing method will be described with reference to FIGS. In the 1st process shown to the hoop-shaped metal plate 11, punching and protrusion processing are performed.

Then, as shown in FIG. 10, the 1st, 2nd fixed contact 2, 3 has the width direction (linear which the 1st, 2nd contact part 2a, 3a which protruded is orthogonal to the longitudinal direction of the metal plate 11). It is formed in parallel with each other in the width direction in the state arrange | positioned in a line by S1).

In the first fixed contact 2 formed on one side of the metal plate 11, the first connecting portion 2b and the first terminal portion 2c are arranged in the longitudinal direction (straight line) of the metal plate 11 from the first contact portion 2a. It is extended and arrange | positioned in the state parallel to S2 direction).

 Moreover, as for the 2nd fixed contact 3 formed in the other side part of the metal plate 11, the 2nd contact part 3a is located in the center part of the width direction of the metal plate 11, and the 2nd terminal part 3c is a metal plate ( 11) extending in a state parallel to the longitudinal direction (straight line S4 direction), the second connecting portion 3b is connected to the second contact portion 3a and the second terminal portion 3c. .

That is, when the 1st, 2nd contact part 2a, 3a is arrange | positioned in a line in the width direction (straight line S1) orthogonal to the longitudinal direction of the metal plate 11, the 1st, 2nd contact part is the length of the metal plate 11 Compared with the arrangement in the direction, the metal plate 11 can be shortened in the longitudinal direction, the material can be easily obtained, and a cheap fixed contact structure can be obtained.

The ends of the first and second terminal portions 2c and 3c are connected to the metal plate 11, and the other ends of the first contact portion 2a and the second terminal portion 3c are aligned in the longitudinal direction of the metal plate 11. It is connected to the metal plate 11 by the connection part 12 extended to the.

Next, the metal plate 11 having such a configuration is sequentially transferred to a molding die (not shown) using the transfer hole 13, and is formed by the forming process with respect to the metal plate 11 in the second step shown in FIG. 11. A housing 1 having the configuration shown in Figs. 1 to 7 is formed.

Then, the 1st, 2nd connection part 2b, 3b and the some connection part 12 of the 1st, 2nd fixed contact 2, 3 are embedded in the back wall 1e, and the 2nd contact part 3a is The first contact portion 2a is exposed to the outer periphery of the opening 1f (center portion of the rear wall 1e) while being exposed to the center portion of the opening portion 1f (center portion of the rear wall 1e). The two terminal parts 2c and 3c and the connection part 12 are in the state which protruded out of the housing 1. As shown in FIG.

Next, the first and second fixed contacts 2 and 3 are cut off from the metal plate 11 by cutting at the double-dotted line Z1 position shown in FIG. 11, and then the first and second terminal portions 2c and 3c are housed. When bending along the bottom wall 1b of (1), manufacture is completed.

In addition, when the connection part 12 is cut | disconnected, the cutting part 12a is in the state exposed from the upper wall 1d as shown in FIG.

In addition, in the second embodiment, the configuration of the push button switch is the same as that of the first embodiment except for the two first and second fixed contacts 2 and 3, and therefore, the same components are given the same reference numbers. Omit.

12 is a front view related to the third embodiment of the push button switch of the present invention, FIG. 13 is a side view related to the third embodiment of the push button switch of the present invention, and FIG. 14 is a third embodiment of the push button switch of the present invention. 15 is a bottom view according to a third embodiment of a push button switch of the present invention.

Fig. 16 is a back view of the third embodiment of the push button switch of the present invention, and Fig. 17 is an explanatory view showing the mounting state of the third embodiment of the push button switch of the present invention. In addition, about the same structure as 1st Example, the same number is attached | subjected to the same component, and detailed description is abbreviate | omitted.

In the cover 6 according to the third embodiment, the front plate 6b is arranged in the front face 1a of the housing 1 so as to close the opening 1f by the front plate 6b, and in the small hole 6g. The projections 1h of the housing 1 are inserted and can be engaged with each other by these wall surfaces, while the tongues formed on the rear side of the pair of side plates 6c are fitted to the recesses 1k. A bent portion 6h that is bent and hooked to the recessed portion 1k is formed integrally with the rear side up and down of the side plate 6c and is attached to the housing 1.

That is, the cover 6 sandwiches the housing 1 from the front and rear with the front plate 6b and the bent portion 6h, and is attached to the housing 1. Moreover, instead of the bending piece 6e, the linear protrusion 6e is formed in the lower end of the front plate 6b.

In addition, in this embodiment, although the protrusion 6e was formed as a pair formed in the lower corner part of the front plate 6b, one or two protrusion pieces 6e were made in arbitrary parts below the front plate 6b. You may form more than one.

In addition, in this embodiment, although the protrusion 1h and the small hole 6g were formed in the cover 6 in the housing | casing 1, the small hole in the housing 1 and the cover ( 6) projections may be formed to form an engagement relationship by the uneven portion, and one or more of these uneven portions may be formed, and if the position is also located above the central portion of the hole 6a, It can also select and arrange | position to an appropriate part in the range of the front surface 1a and the front plate 6b. Moreover, the small hole 6g may not necessarily be a through hole, and may be formed so that it may have a bottom.

In addition, the engagement by the uneven part does not need to be engaged from the initial state in the assembled state of the cover 6 and the housing 1, and when the housing 1 is inclined with the mounting surface side as a supporting point. It can also be inserted through with a slight gap to engage it.

In this case, the maximum gap of the uneven portion is set smaller than the gap between the hole 6a of the cover 6 and the external diameter of the operation member 7, that is, even when the housing 1 moves, the operation member 7 and the hole 6a. Before these bumps, it is necessary to set the concave-convex portions to be engaged.

Moreover, the uneven part may be formed in an indentation state from an initial state.

The operation member 7, which is a push button made of a molded product of synthetic resin, has an operation portion 7a, a shading portion 7b formed at the rear side of the operation portion 7a and a pressing portion protruding rearward from the center portion of the operation portion 7a. 7c), the operation member 7 includes the housing 7b and the pressing portion 7c in the opening 1f, and the operation portion 7a protrudes outward from the hole 6a. 1) It is mounted to move back and forth with respect to.

At this time, the uneven part (the convex part 1h and the recessed part 6g) is located above the axis line G (refer FIG. 17) of the operation member 7. As shown in FIG.

The push button switch of this invention which has such a structure has the lower surface side of the bottom wall 1b of the housing 1 facing the printed circuit board 8, as shown in FIG. 17, and the 1st, 2nd, 3rd terminal part (2c, 3c, 4c) and the projection 6e are mounted on the printed board 8, and the first, second, third terminal portions 2c, 3c, 4c and the projection 6e are printed substrate 8 It is soldered (9) to the conductive pattern (not shown) formed on it, and it is mounted, and a push button switch is mounted on the printed board 8 surface.

Then, the push button switch of the present invention, when the operating member 7 is pressed in the state where the cover 6 is soldered and fixed to the printed circuit board 8, the pressing direction thereof is the P1 direction at the time of the arrow as shown in FIG. In this case, the front face 1a side of the housing 1 moves upward with the supporting point as the support point as the operation member 7 moves upward.

Moreover, in the front surface 1a which is a moving side, the recessed part 6g of the front plate 6b and the convex part 1h of the front surface 1a are the movement to the upper side of the front surface 1a side of the housing | casing 1 Due to the engagement relationship, the movement to the upper side is small, because of this, the operability is good, and since it is a small repetition of the movement to the upper side on the front face 1a side, the terminal portions 2c, 3c, 4c and the printed board 8 The peeling of the solder 9 between) becomes small.

Moreover, since the convex part 1h is formed in the front surface 1a of the housing | casing 1, and this convex part 1h was made to fit in the recessed part 6g of the front plate 6b, the dimension of a horizontal direction Can be made small.

The push button switch according to the present invention includes a housing made of an insulating material having an opening, first and second fixed contacts embedded and mounted in the housing, movable contacts housed in the opening, and movable to operate the movable contact. And a first fixing contact exposed in the opening, a first contact portion connected to the first contact portion and embedded in the housing, and a first terminal portion protruding out of the housing. A second contact portion exposed in the opening, a second connection portion connected to the second contact portion and embedded in the housing, and a second connection portion protruding out of the housing; A first end having a terminal portion, the first fixed contact portion being disposed near the outer periphery of the opening portion and having a first end connected to the first connection portion and the first connection portion from the first contact portion; Portion is formed extending in a straight line as was the structure disposed on a central portion of the opening portion second contact of the second fixed contact.

As described above, when the first fixed contact portion is disposed near the outer circumference of the opening portion, and the first contact portion and the first terminal portion connected to the first connection portion extend from the first contact portion in a linear direction (straight line S2 direction), , The first and second contact portions of the first and second fixed contacts can be disposed on a straight line S1 orthogonal to the straight line S2 direction, so that the first contact portion of the first fixed contact can reduce the longitudinal dimension of the metal plate as compared with the conventional art. It is possible to obtain a material easily and inexpensive.

In addition, since the first connection portion of the first fixed contact 2 is linear and connects the first contact portion and the first terminal portion, the first connection portion is shorter than the conventional one, making it easy to acquire materials and inexpensive. It is simple and manufacture of a molding die becomes easy.

The second fixed contact is formed by extending the second connection portion and the second terminal portion connected to the second connection portion in a linear direction from the second contact portion, and each of the second connection portion and the second terminal portion is formed of the first connection portion and the first terminal portion. Since it was arrange | positioned in parallel with each other, it can be shortened in the width direction, material cost can be reduced, and an inexpensive thing is obtained.

A third fixed contact, the third fixed contact being connected to the third contact portion exposed in the vicinity of the outer periphery of the opening, the third contact portion being connected to the third connection portion embedded in the housing and the third connecting portion, A third terminal portion protruding outward, wherein the third fixed contact is disposed at a position facing the first fixed contact with the second fixed contact therebetween, each of the third connecting portion and the third terminal portion being the first connecting portion and the first connecting portion; Since it is arrange | positioned in parallel with respect to each of 1st terminal part, a 2nd, 3rd connection part is short, the acquisition of material is easy and inexpensive, the structure is simple, and manufacture of a molding die is easy.

Since the 1st, 3rd fixed contact was connected by the 4th connection part, the 4th connection part becomes a support part at the time of the shaping | molding process of a housing, and can process with high precision.

Since the second terminal portion of the second fixed contact is disposed in parallel with the first terminal portion with the second contact portion interposed therebetween, it is possible to widen the space between the first and second terminal portions, and to obtain materials easily and inexpensively. .

Since the terminal portion is bent along the terminal portion lead-out surface of the housing, one corresponding to the surface mounting is obtained.

Claims (6)

A housing made of an insulating material having an opening, first and second fixed contacts embedded in the housing, a movable contact housed in the opening, and movably mounted in the opening, And a first contact portion exposed in the opening, a first connection portion connected to the first contact portion and embedded in the housing, and connected to the first connection portion. A first terminal portion protruding out of the housing, wherein the second fixed contact is connected to the second contact portion exposed in the opening, the second contact portion is connected to the second contact portion, and is embedded in the housing; And a second terminal portion protruding out of the housing, wherein the first fixed contact includes the first contact portion disposed near an outer circumference of the opening and is connected to the first contact portion. The first connection part and the first terminal part connected to the first connection part extending in a linear direction, and the second contact part of the second fixed contact part is disposed at the center of the opening part. . The second fixed contact of claim 1, wherein the second fixed contact is formed by extending the second connecting portion and the second terminal portion connected to the second connecting portion in a linear direction, and the second connecting portion and the Each of the second terminal portion is disposed in parallel with respect to the first connecting portion and the first terminal portion. 3. A housing according to any one of claims 1 to 4, wherein the third fixed contact is provided, and the third fixed contact is connected to the third contact portion exposed near the outer circumference of the opening, and is connected to the third contact portion. And a third connecting portion embedded in the third connecting portion, the third connecting portion projecting out of the housing, wherein the third fixed contact faces the first fixed contact with the second fixed contact therebetween. And the third connecting portion and the third terminal portion are disposed in parallel with respect to the first connecting portion and the first terminal portion, respectively. The push button switch as claimed in claim 3, wherein the first and third fixed contacts are connected by a fourth connection part. The push button switch according to claim 1, wherein the second terminal portion of the second fixed contact is disposed in parallel with the first terminal portion with the second contact portion therebetween. The push button switch according to claim 1, wherein the terminal part is bent along the terminal part lead surface of the housing.

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