JPH01235112A - Switch - Google Patents

Abstract

PURPOSE:To allow a single switch to have both switching functions for transferring the polarity and for turning a power source on or off by independently and selectively reciprocating two sliders for transferring contacts. CONSTITUTION:Coil springs 15a and 15b are inserted between a driving body 10 and sliders 8a and 8b, when the driving body 10 is moved against the coil springs 15a and 15b, both sliders 8a and 8b are moved, movable contact pieces 9a and 9b are slid to perform a switching action. When a selection stopper 16 is rotated to the chain line position (a) or (b), for example, the slider 8b or 8a is made unmovable, respective switching is performed only by the reciprocating motion of the movable contact piece 9a or 9b of the other slider 8a or 8b. The number of switches can be thereby reduced and the operability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a switch used for turning on/off a power source, switching polarity, etc.

[Conventional technology]

Conventionally, a circuit as shown in FIG. 7 has been used as a switch for switching between forward and reverse rotation of a motor. In other words, the movable bodies 1a and lb that see-saw are replaced by supports 2a and 2b! ! Straight skin holder, each movable body 1a
, 1b can be operated simultaneously using a common operating member. Therefore, when the operating member is pressed to one side, the movable bodies 1a and lb come into contact with one of the fixed contacts 3a and 3b, and
When the operating member is pressed to the other side, the movable bodies 1a, lb come into contact with the other fixed contacts 4a, 4b.

Since the fixed contacts 3a and 4b and the fixed contacts 3b and 4a are connected by the conductor 5.6, the movable bodies 1a and lb are in contact with the fixed contacts 3a and 3b on the right side as shown in the figure. In this case, the positive side of power supply E → fixed contact 3a → movable body 1a
→ Support body 2a → Motor M → Support body 2b → Movable body 2a → Fixed contact 3b → On/off switch 7 → Power is supplied to motor M through the path on the negative side of power supply E, and motor M rotates forward. .

Conversely, when the movable bodies 1a and 1b are operated so as to come into contact with the left fixed contacts 4a and 4b, the positive electrode side of the power supply E→fixed contact 3a→conductor 5→fixed contact 4b→movable body 1b→motor M→
Power is supplied to the motor M through the path from the support body 2a to the movable body 2a to the fixed contact 4a to the conductor 6 to the fixed contact 3b to the on/off switch 7 to the negative electrode side of the power source E, and the motor M rotates in reverse.

[Problem to be Solved by the Invention] However, in the conventional switch, the conductor 5.
6, it is necessary to cross-connect them, and in particular, in addition to polarity switching, a TL source switch 7 is required, which poses problems such as an increase in the number of parts and an increase in ground space. this is,
This is due to the structure in which the two movable bodies 1a and 1b move together in the same direction. Additionally, if you have a speed control circuit and connect the power supply directly after the speed control operation, you will need another switch, which will increase the number of switches.
Problems such as decreased operability arise.

The technical problem of the present invention is to solve such problems with conventional switches and to enable the two movable bodies 1a and lb to move independently, so that a single switch can be used for polarity switching and power supply. The object is to be able to have both on and off switching functions.

[Means to solve the problem]

As shown in FIG. 1, sliders 8a and 8b, which are moved by the driver 10, are disposed on both sides of a driver IO that reciprocates in response to an external operation.

Movable contact pieces 9a, 9b for switching are attached to at least both sliders 8a, 8b.

The movable contact piece 11 may also be attached to the drive body 10.

A movable selection stopper 16 for regulating the stroke is provided at one end of both sliders.

That is, depending on the position of the selection stopper 16, the strokes of the two sliders 8a and 8b can be selectively regulated.

[Function] Coil springs 15a, 15b, etc. are interposed between the driver 10 and the sliders 8a, 8b, and the driver lO
moves against the coil springs 15a and 15b,
Both sliders 8a, 8b move, movable contact pieces 9a, 9
b slides, and a switching operation is performed.

At this time, when the selection stopper 16 is rotated, for example, to the chain line position indicated by a, the slider 8b becomes immovable, and switching is performed only by reciprocating the movable contact piece 9a of the other slider 8a. On the contrary, selection stopper 16
When the slider 8a is rotated, for example, to the position indicated by the broken line b, the slider 8a becomes immovable, and switching is performed only by the reciprocating movement of the movable contact piece 9b of the other slider 8b.

The driving body 10 is also equipped with a movable contact piece 11, and when the driving body 10 is further moved against the coil springs 15a and 15b, switching is also performed by the movable contact piece 11 of the driving body 10. This switching operation may be performed after a certain time delay with respect to the switching operation of the slider 8a or 8b, or may be performed simultaneously with the switching operation of the movable contact pieces 9a, 9b.

(Example) Next, how the switch according to the present invention is actually embodied will be explained using an example. Fig. 1 is a perspective view showing the main parts of the switch according to the present invention, and Fig. 2 (a) -(1) are diagrams showing the operation of the switch of the present invention, and the upper row shows the movement state of the contacts.
The middle row shows the slider movement status, and the bottom row shows the stopper position.

In FIG. 1, sliders 8a and 8b have movable contact pieces 9a and 9h. This slider 8a,
The driver 10 is placed on the slider 8b, and the sliders 8a, 8
can be moved parallel to sliders 8a and 8b on b.
It also has a movable contact piece 11.

One of the sliders 8a, 8b has drive body receivers 12a, 12b for positioning the drive body 10, and the other has spring receivers 13a, 13b. A compression coil spring 1 is installed between the spring receivers 14a, 14b of the driver IO and the spring receivers 13a, 13b of the slider.
5a and 15b are inserted.

Reference numeral 16 denotes a selection stopper, which allows selection of a neutral position indicated by a solid line n, a position indicated by a chain line, and a position b indicated by a broken line by an external operation.

Next, the operation of this switch will be explained. Assume that the selection stopper 16 is now located at position a, as shown by the chain line a. The driving body 10 is constantly moved in the direction of an arrow 17 by a spring or the like.

In this position, when the driver IO is pressed in the direction of arrow 18 against arrow 17, compression coil springs 15a, 15
The sliders 8a and 8b are connected to the selection stopper 1 via b.
Pressed in 6 directions. However, since the selection stopper 16 is at position a, making the left slider 8b immovable, only the right slider 8a moves without being obstructed by the selection stopper 16. Drive body 10
When the drive body 10 is further moved in the direction of the arrow 18, only the drive body 10 moves against the compression coil spring 15a.

By moving one of the sliders 8a in this way,
The switching operation is performed by the movable contact piece 9a, and then the driving body 10 moves, so that the switching operation is performed by the movable contact piece 11 after some delay.

When the drive body 10 is returned in the direction of the arrow 17, the movable contact piece 11 first
As a result, switching is performed by the movable contact piece 9a with a delay, and the state returns to the original state.

With the selection stopper 16 moved to the position indicated by the broken line,
As described above, when the driving body 10 is moved in the direction of the arrow 18, the slider 8a is blocked by the selection stopper 16,
Unable to move. Then, the other slider 8b moves and switching is performed by the movable contact piece 9b, and with a delay, the driving body 10 further moves and switching is performed by the movable contact piece 11.

Further, with the selection stopper 16 moved to the neutral position indicated by the solid line n, the driving body 10 is moved in the direction of the arrow 18. However, even when pressed in the direction of arrow 18, slider 8a
, 8b are in contact with the selection stopper 16 and cannot be moved, so no switching operation is performed.

FIG. 2 is a diagram showing each state in the above operation, (a
) to (C) are states in which the driving body 10 has returned in the direction of the arrow 17. In this state, the movable contact piece 9a connects between the fixed contacts 19a and 20a, and the movable contact piece 9b connects the fixed contacts 1 to 1.
9b-20b are connected. The movable contact piece 11 of the driver 10 is located on the common contact 21.

Next, as shown in (d)...(f), the selection stopper 16
When the driver 10 is moved in the direction of the arrow 18 with the slider 8a movable by rotating the slider 8b toward the slider 8b, only the slider 8a moves toward the selection stopper 16 via the coil spring 15a, as shown in (e). By moving to , the movable contact piece 9a moves to the common contact 21 side and connects between the fixed contact 19a and the common contact 21.

As shown in (g)...(i), when the driving body 10 is further moved, the movable contact piece 11 connects between the power supply fixed contact 22 and the common contact 21, and the power is turned on.

When the driving body 10 is returned to its original position, the movable contact piece 11 first separates from the power supply fixed contact 22 and becomes the states (d) to (f), then the movable contact piece 9a separates from the common contact 21 and becomes the state shown in (a).
) returns to the contact position.

Next, as shown in U) to (1), when the selection stopper 16 is rotated toward the slider 8a and the driver 10 is moved in the direction of the arrow 18 with the slider 8b movable,
As shown in (b), only the slider 8b has a coil spring 15b.
By moving to the selection stopper 16 side via
- Connect common contact 21.

As in the case of (2)...0), when the driving body 10 is further moved, the movable contact piece 11 connects between the power supply fixed contact 22 and the common contact 21, and the power is turned on.

In this way, depending on whether the selection stopper 16 is turned to the position (f) or the position (1), the movable contact pieces 9a and 9
b can be selectively driven and connected to the common contact 21.

FIG. 3 shows an example of a motor rotation direction switching circuit using this switch mechanism. Fixed contact 20a,
20b is connected to the positive side of the power source E, and the fixed contact 19a
, 19b are connected to both poles of the motor M. Further, the common contact 21 is connected to the speed control circuit 23, and the fixed contact 22 is connected to the speed control circuit 23 and the negative electrode side of the power source E.

As shown by the solid lines, the movable contact pieces 9a and 9b are located on the side of the fixed contacts 20a and 20b, respectively, and as shown in FIG. Fixed contact 20b is connected, and both poles of motor M are short-circuited. Therefore, the motor M cannot rotate, and the power switch of the motor M (between the common contact 21 and the fixed contact 22) is also in an OFF state.

Next, as shown in FIG. 2(d), when the movable contact piece 9a moves to the common contact 21 side and turns on the connection between the two, in FIG. Power is supplied to the motor M through the path of contact 19a→movable contact piece 9a→common contact 21→rotation control circuit 23→negative electrode of electric current aE, and the motor M starts to rotate, for example, in the forward direction.

At this time, the rotation speed of the motor M is gradually increased by the rotation speed control circuit 23.

Next, as shown in FIG. 2(g), when the driver 10 is further moved and the movable contact piece 11 connects the common contact 21 and the fixed contact 22, the common contact 21 passes through the speed control circuit 23. Instead, it is directly connected to the negative pole of the power source E via the fixed contact 22, and rotates at maximum speed.

Further, as shown in FIG. 2(j), when the movable contact piece 9b is moved to the common contact 21 side and the connection between the two is turned on, the positive electrode of the power source E → the fixed contact 20b → 20q → the motor M
Power is supplied through the following path: -> fixed contact 19b -> movable contact piece 9b -> common contact 21 -> speed control circuit 23 -> negative pole of power supply E, and motor M begins to rotate in reverse and gradually speeds up.

The driving body IO is further moved, and the movable contact piece 11
When the common contact 21 and the fixed contact 22 are connected, the common contact 21 is directly connected to the negative electrode of the power source E via the fixed contact 22 without passing through the speed control circuit 23, and rotates at the maximum speed.

In this way, by selecting the position of the selection stopper 16, the sliders 8a and 8b are selectively moved, and by moving only one movable contact piece 9a or 9b, the polarity of the motor M can be changed. be able to. Then, while the driving body 10 is further moved, a delay time is provided, during which time the speed of the motor M is increased by the speed control circuit 23, and then the movable contact piece 11 is turned on to directly control the motor M.
By supplying power to the motor M, the speed of the motor M can be effectively controlled.

4 and 5 are diagrams showing the specific structure of the switch of the present invention. FIG. 4 is a sectional view at the position of the slider 8a or 8b, and FIG. 5 is a sectional view at the center position of the driver 10. . The sliders 8a, 8b and the drive body 10 shown in FIG. 1 are built into a case-like main body 24, and a knob 25 integral with the selection stopper 16 projects outward from the main body 24. Between the knob 25 and the main body 24, there is a moderation mechanism consisting of a compression coil spring and a ball 26, which allows the selection stopper 16 to be locked at each of the n, a, and b positions.

A lever 28 is built into a flat portion 27 that is integral with the main body 24, and is rotatably supported by a support shaft 29.

One end of the lever 28 engages with the driver IO, and the other end projects outward from the handle 27 by a compression coil spring 30. When the trigger 31 rotatably supported on the main body 24 is pulled, the lever 28 is activated by the compression coil spring 3.
0, the driver 10 rotates counterclockwise, and the drive body 10 moves in the direction of arrow 1.
It is driven in eight directions and the switching operation is performed as explained in FIGS. 1 and 2.

FIG. 6 is an exploded perspective view of the switch shown in FIGS. 4 and 5, showing each component. A common contact 21 and fixed contacts 19a and 19b are provided in a case-like main body 24.

20a, 20b, and the common contact 22 are built in, and the sliders 8a, 8b, and the driving body 10 are mounted on top of these! ! 2, the compression coil spring 15a is inserted between the driver receiver 12a and the spring receiver 13a, and the compression coil spring 15b is inserted between the driver receiver 12b and the spring receiver 13b. Then, the sliding piece 32 of the sliding resistor is placed on the driving body 10,
With the compression coil spring and ball 26 for the moderation mechanism inserted into the selection stopper 16, the cover 33 is covered and fixed.

In addition, a return spring 30 and a lever 28 are included in the handle 27.
The upper end of the lever 28 is engaged with the driver 10, and the support shaft 29 is inserted therethrough. The support shaft 3 of the main body 24 is inserted into the support holes 34a and 34b at the upper end of the trigger 31.
5a and 35b are inserted.

In this embodiment, the lever 280 rotating force operated by the trigger 31 is used to reciprocate the driving body 10, but the driving body 10 can also be driven by a push button type or a slide switch type.

Further, the selection stopper 16 is also an example, and the slider 8
Any other structure may be used as long as it can selectively restrict the movement range of a and 8b.

[Effects of the Invention] As described above, according to the present invention, the polarity can be switched by independently and selectively reciprocating the sliders 8a and 8b for switching the contacts, so that the power can be turned on with a single switch.・It can also be equipped with an off switch function, which is highly effective in terms of reducing the number of parts and downsizing. Further, after the speed control circuit is turned on by the movable contacts 9a and 9b of the sliders 8a and 8b, the common contact 21 closes with a delay.
Since the power supply is directly connected, it is extremely effective in reducing the number of switches and improving operability in devices that require speed control.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the main parts of the switch according to the present invention, FIG. 2 is a diagram showing the switching operation, FIG. 3 is a diagram showing an example of the circuit configuration, and FIGS. 4 and 5 are the entire details of the embodiment. 6 is an exploded perspective view of the embodiment switch, and FIG. 7 is a diagram showing a polarity switching circuit using a conventional switch. In the figure, 8a, 8b are sliders, 9a, 9b,
11 is a movable contact piece, 10 is a driving body, 15a, 15b are coil springs, 16 is a selection stopper, 19a, 19
b indicates a fixed contact, 20a and 20b indicate fixed contacts, and 21 indicates a common contact. Patent applicant Satori Switch Industry Co., Ltd. agent Patent attorney Yasushi Fukushima No change in the content of the drawing) Engraving of the first drawing of the first drawing of Izumo from Izumo (no change in the content) 3) The complete picture of the situation 4A Fig. 5 Fig. 7 July 27, 1988 Director General of the Patent Office Yoshi 1) Moon Yi 1, Indication of case: Patent application 1983-630152, title of invention: Switch name: Satori Switch Industry Co., Ltd. 5, date of amendment order: June 8, 1988 6, subject of amendment: Drawing No. 1
．． 3.6 Figure 7, Contents of the amendment As shown in the engraving attached to the drawing originally attached to the application (no change in content)

Claims (1)

[Scope of Claims] Sliders (8a) (8b) moved by the drive body (10) are disposed on both sides of the drive body (10) that reciprocates by an external operation, and at least both sliders (8a) are moved by the drive body (10). ) (8b), a movable contact piece for switching (9a
) (9b) is attached, and a movable selection stopper (16) is provided at one end of both sliders (8a) and (8b) for independently and selectively regulating each stroke. switch.