JPS6269415A - Switch - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Overview] The present invention relates to a switch for a wiring board installed in an electric device such as a hair dryer.

[Background technology]

Conventionally, switches used in electrical equipment such as hair dryers include a fixed contact plate and a movable contact plate in a switch housing, as described in Japanese Patent Application Laid-Open No. 55-113409. The terminals of the switch, which are made up of the base of the daughter board, are exposed by protruding from the switch housing.

However, when assembling electrical equipment, such switches must be connected to their terminals via lead wires, etc. in order to connect them to electrical components, so there is a problem in that it takes time and effort to wire the electrical equipment. was there. In addition, since lead wires and the like are often connected by soldering, there is a problem that there is a risk that the connection part will be disconnected during wiring work, resulting in poor connection reliability [Purpose of the Invention] ] This invention was made in view of the above circumstances, and an object of the present invention is to provide a switch that not only simplifies wiring work when assembling electrical equipment but also increases the reliability of connection with electrical components. The purpose is

[Disclosure of the invention]

In order to achieve the above object, the present invention provides a switch used in a wiring board equipped with a conductor plate for electrical wiring, wherein the conductor plate has a spring property and extends from the switch. The gist of the switch is a switch that includes a contact plate made up of at least a pair of extensions, and an operating section that opens and closes the pair of contact plates.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 show embodiments of the switch according to the present invention. As shown in the figure, two switches, seven switches A and B, are provided on a wiring board 2 having a conductor plate 1 for wiring therein. As the conductor plate 1, for example, one made of a material having spring properties such as phosphor bronze is used. Switch A includes fixed contact plates 3, 4, movable contact plates 5, 6, a switch housing 7, and an operating section (slide button) 8, and switch B includes fixed contact plates 9. Movable contact plate 1
0, a switch housing 11, and an operation section 12. The front and rear portions of the conductor plate 2 have openings 13a,
13b, horizontally elongated protrusions 14 and 15 are provided before and after the opening 13a, and U-shaped protrusions 16 and 17 are provided before and after the opening 13b. The upper surface of the protrusion 14 is provided with one recess (hook engagement recess) 14a on both sides of the opening 13a, and the upper surface of the projection 15 is provided with a recess (hook engagement recess) on the opening 13a side. )1
5a, guide ribs L5b are provided on both sides. Recesses (hook engagement recesses) 16a and 17a are provided on the upper surface of the protrusion 16.17, respectively, on the opening 13b side.
6 and both sides of the protrusion 17 are provided with guide ribs 16b.
, 17b are provided, respectively. Fixed contact plate 3, 4
, 9 and movable contact plates 5, 6.10 are all conductor plate 1.
It consists of an extension that extends from. As shown in FIG. 4, the movable contact plate 5 is bent vertically with respect to the conductor plate 1, and its width direction is perpendicular to the wiring board 2. The same applies to the fixed contact plates 3.4.9 and the movable contact plates 6, 10. The fixed contact plates 3 and 4 are
Protrusions 18a protrude from both sides of the protrusion 14 toward the rear end of the opening 13a, and are provided on both sides of the opening 13a;
The tip portion is fixed to 18b. Re-fixing contact plate 3゜4
Contact points 3a and 4a are provided on the inner surface of the intermediate portion of. The movable contact plates 5.6 are lined up and protrude from the protrusion 15 toward the front end of the opening 13a, and their tips are located inside the fixed contact plate 3.4. Double rotating contact plate 5,
Contact 3 of fixed contact plates 3 and 4 on the outer surface of the tip of 6
Contacts 5a and 6a are provided at positions corresponding to a and 4a. In addition, protrusions 5b and 6b that protrude inward are provided by bending at the intermediate portions of both rotary contact plates 5 and 6. The fixed contact plate 9 protrudes from one side of the protrusion 16 toward the rear end of the opening 13b.
The distal end portion is fixed to a protrusion 19 provided on one side of the holder. A contact 9a is provided on the inner surface of the intermediate portion of the fixed contact plate 9. The movable contact plate 10 has an opening 13 from a protrusion 17.
It protrudes toward the front end of b, and the tip end is connected to the fixed contact plate 9.
It is located inside. A contact 10a is provided on the outer surface of the tip of the movable contact plate 10 at a position corresponding to the contact 9a of the fixed contact plate 9. Furthermore, a protrusion 10b that protrudes in a direction opposite to that of the fixed contact plate 9 is provided at the intermediate portion of the movable contact plate 10 by bending.

The housing 7 has hooks 2 on both sides of the front end of the upper surface of the base 7a.
0 are provided one by one, and one hook 20 is provided at the rear end. One protrusion 21 is provided on each side of the intermediate portion, and a horizontally long hook receiver portion 21a with a piece-shaped upper end is provided at the intermediate portion of both protrusions 21. One guide rib 22 is provided in front of both protrusions 21 in a protruding manner. The housing 7 is inserted into the opening 13a from the back side of the wiring board 2, and each hook 20 is hooked and fixed in the recesses 14a and 15a. The guide rib 22 of the housing 7 is inserted into the opening 13a from the outer side of the fixed contacts 3 and 4, and its upper end protrudes beyond the protrusion 14. Since the front and rear ends of the housing 7 are brought into contact with the front and rear ends of the opening 13a, the strength of the opening 13a of the wiring board 2 is improved, and the degree of sealing inside the switch A is improved. Further, since the protrusions 21 are provided on both sides of the housing 7, the degree of sealing inside the switch A is improved. In the housing 11, one hook 20 is provided at the front and rear ends of the upper surface of the base 11a, and one protrusion 23 is provided at each side of the intermediate portion. A horizontally long hook receiving portion 23a having a hook-shaped upper end is provided at the front portion of both protrusions 23. A guide rib 24 is provided in front of one protrusion 23.
is installed protrudingly. The housing 11 is inserted into the opening 13b from the back side of the wiring board 2, and each hook 20 is inserted into the recess 1.
6a and 17a to be fixed. The guide rib 24 of the housing 1 is located at the opening 13.
It is inserted from the outer side of the fixed contact plate 9 of b, so that the upper end protrudes beyond the protrusion 16. Housing 1
Since the front and rear ends of switch 1 are brought into contact with the front and rear ends of opening 13b, the strength of opening 13b of wiring board 2 is improved, and the degree of sealing inside switch B is improved. There is. Also, since the protrusions 23 are provided on both sides of the housing 11, the switch B
The degree of internal sealing has been improved. The operation unit 8 is a base 8a.
A protrusion 25a is provided on the upper surface, and as shown in FIG. 5, hooks 26 are provided on each side of the lower surface. A protrusion 27 extending in the length direction is provided at the center of the lower surface. This protrusion 27 is provided with protrusions 27a and 27b that protrude laterally on both rear sides, and the protrusion 27a on the side facing the movable contact plate 5 is the protrusion 27b on the side facing the movable contact plate 6. The front end protrudes further forward. The operation part 8 is installed in the housing 7 so that the hooks 26 on both sides thereof can be slid back and forth in the housing 7, with the hooks 26 hooked onto the hook receivers 21a of the housing 7.

The sliding movement of the operating portion 8 is guided by a guide 22.15b. In the operating section 12, a protrusion 25b is provided on the upper surface of the base 12a, and one hook 28 is provided on both sides of the lower surface. A protrusion 29 is provided at the center of the lower surface along the length direction. The operation unit 12 is
The hooks 28 on both sides are connected to the hook receiver portion 23 of the housing 11.
a and is installed in the housing 11 so as to be slidable back and forth. The operating section 12 is connected to the guide 24.1.
The sliding movement is guided by 6b and 17b.

The switch A operates as shown in (al to (C)) in FIG. In this case, the combination of the contact 3a of the fixed contact plate 3 and the contact 5a of the movable contact plate 5 and the combination of the contact 4a of the fixed contact plate 4 and the contact 6a of the movable contact plate 6 are both in the OFF state.Next, As shown in (b) of the figure, when the protrusion 27 is advanced to the middle, the protrusion 27a of the protrusion 27
pushes the protrusion 5b of the movable contact plate 5 outward, so the contact 5a
is pressed against contact 3a, and the combination of contacts 3a and 5a is turned on. As shown in (C1) of the same figure,
When the protrusion 27 is further advanced, the protrusion 27b of the protrusion 27
pushes the protrusion 6b of the movable contact plate 6 outward, so the contact 6a
is pressed against contact 4a, and the combination of contacts 4a and 5a is also turned on. In this state, the protrusion 2
7 is retracted, the movable contact plate 5.6 returns to its original shape due to its spring properties, as shown in Figure (a), and the combination of contacts 3a, 5a and contacts 4a, 6a
Both of the combinations are OFF.

In the switch B, when the operating portion 12 is retracted, the contact 9a of the fixed contact plate 9 and the contact 10a of the movable contact plate 10 are in an OFF state. When the operation part 12 is moved forward, the protrusion 2
9 pushes the protrusion 10b of the movable contact plate 10 outward, so the contact 10a is pressed against the contact 9a, and both contacts are turned on. In this state, when the operating portion 12 is moved backward, the movable contact plate returns to its original shape due to its spring property, and the contacts 9a and 10a are turned off.

As described above, the switch according to the present invention is constructed by the contact plate extending from the conductor plate of the wiring board, so that the connection between the switch and the electric device is made by connecting the conductor plate to the electric device. All you have to do is do it. Therefore, when assembling electrical equipment, wiring work is simplified and the reliability of connection with electrical components is also increased.

In the switches A and B of the above embodiments, each contact is covered below and on the sides with a housing, and the upper part is covered with the operating section, so the internal contacts are not exposed and the dustproof effect is high. There is. However, a housing is not necessarily required.

Next, FIG. 7 shows an example in which switches A and B are installed in a hair dryer.

As shown in the figure, this hair dryer has a wiring board 2 provided with switches A and B disposed in an upper portion inside a main body 30. The lower part of the wiring board 2 of the main body 30 is an air passage 31, with the front end opening serving as a discharge port 31a, and the rear end opening serving as a suction port 31b. A heater 32 is provided in the passage 31. Motor 33. Rectifier blade 34. A fan 35 is provided respectively. Switch A on the top surface of the main body 30
, B are provided with openings 36, 37 in the portions located above them. Openings 36, 37 contain switch drive phase 3.
8.39 is provided. Recesses 38a and 39a are provided on the back surfaces of the drive phases 38 and 39, respectively, and these four parts 38a and 39a have protrusions 25a and 25a of the operating parts 8 and 12, respectively.
25b is inserted. And drive 6038, 39
When the user slides back and forth, the operating section 8.12 also slides back and forth. In the figure, ■ is a conductor plate, and 7 and 11 are switch housings.

The electric circuit of the hair dryer is configured as shown in FIG. 8, for example. In the figure, A.

B is a switch according to the present invention, C+, Cz are capacitors, D is a full-wave rectifier circuit, E is a thermoswitch, 3, 4
．． 9 is a fixed contact plate, 5, 6.10 is a movable contact plate, 32a
32b is a main heater, 32b is a sub-heater, 33 is a motor, 40 is a voltage dividing resistor, 41- is a fuse, and 42 is a power source.

This hair dryer works as follows. switch B
When the movable contact plate 5 and fixed contact plate 3 of switch A are connected with the movable contact plate 10 and fixed contact plate 9 of switch A connected, current flows to the motor 33 via the full-wave rectifier circuit. Supplied. When the motor 33 rotates, the fan 35
(See FIG. 7) rotates, so air flows in from the suction port 31b, passes through the passage 31, and exits as wind from the discharge port 31a. If the movable contact plate 6 and the fixed contact plate 4 in the switch A are not connected, no current flows to the main heater 32a and no heat is generated, so the air coming out of the outlet 31a is cold air. When the movable contact plate 6 is also connected to the fixed contact plate 4, current flows through the main heater 32a and the main heater 32a generates heat, so that the air coming out from the discharge port 31a becomes hot air.

Next, when the movable contact plate 10 and fixed contact plate 9 of switch B are disconnected, the secondary heater 32b will generate heat together with the main heater 32a.
Since a and the slave heater 32b are connected in series,
The total amount of heat generated is smaller than when heat is generated only by the main heater 32a. However, since the rotational speed of the motor 33 decreases at the same time, the air volume also decreases, so that the temperature of the air exiting from the discharge port 31a does not change.

Although the switch in the above embodiment is a slide switch, it is not limited to this, and may be a bush switch, for example.

Furthermore, in the combination of a pair of contact plates in the embodiment, one is a fixed contact plate and the other is a movable contact plate, but both may be movable contact plates.

The switch according to the present invention is not limited to being provided in a hair dryer.

〔Effect of the invention〕

The switch according to the present invention is a switch used in a wiring board equipped with a conductor plate for electrical wiring, wherein the conductor plate has spring properties and includes at least a pair of extension parts extending from the conductor plate. Since a contact plate is provided and an operation section for opening and closing the pair of contact plates is provided, wiring work is simplified when assembling an electrical device, and connection reliability with electrical components is increased.

[Brief explanation of drawings]

Fig. 1 is a perspective view of one embodiment of the switch according to the present invention, Fig. 2 is a perspective view of each component of switch 7 A and B and the wiring board according to the invention, and Fig. 3 is a perspective view of the wiring board. 4 is an explanatory diagram of the folded state of the movable contact plate, FIG. 5 is a perspective view of the operating section of switch A seen from the back side, and (a) to (C) of FIG. 6 are explanatory diagrams of the operation of switch A. 7 is a structural explanatory diagram of a hair dryer using switches A and B, and FIG. 8 is an electrical circuit diagram of the same hair dryer. l...Conductor plate 2...Wiring board 3,4.9...
Fixed contact plate 5, 6.10...Movable contact plate 8.12
...Operation section A, B...Switch agent Patent attorney Takehiko Matsumoto Figure 3 Figure 4 Figure 6 (c) Figure 8 2b

Claims (4)

[Claims] (1) A switch used in a wiring board equipped with a conductor plate for electrical wiring, the conductor plate having spring properties,
A switch comprising a contact plate consisting of at least a pair of extensions extending from the contact plate, and an operating section for opening and closing the pair of contact plates. (2) One of the pair of contact plates is a movable contact plate that extends horizontally on the wiring board with its width direction perpendicular to the wiring board, and the other is attached to the side of the tip of this movable contact plate. 2. The switch according to claim 1, wherein the fixed contact plate is installed, and the operating unit presses or releases the tip of the movable contact plate against the fixed contact plate. (3) The movable contact plate has a protrusion in the middle part that protrudes on the opposite side from the fixed contact plate, and the operating part is designed to slide forward and backward parallel to the movable contact plate, and the operating part can be moved in one direction. When the movable contact plate slides in the opposite direction, the protruding part of the movable contact plate is pushed by the operating part and its tip is pressed against the fixed contact plate, and when the operating part slides in the opposite direction, the pressing of the protruding part is released. A switch according to claim 2. (4) A movable contact plate and a fixed contact plate are provided to protrude into an opening provided in the wiring board, and both contact plates are covered on the sides and bottom by a housing inserted from the back side of the opening. 4. The switch according to claim 3, wherein the operating section is slidably installed on the housing so as to cover the upper surface of the housing.