KR970006437B1 - Switch - Google Patents

Abstract

None.

Description

switch

1 is a partially broken perspective view showing an embodiment of a switch according to the present invention.

2 is a partial front cross-sectional view in the vicinity of the contact point of the switch of the embodiment.

3 is a partial front sectional view in the vicinity of the center of the switch of the embodiment.

4 is a front view of the vicinity of the cam portion of the switch of the embodiment;

Figure 5 is a perspective view showing another embodiment of the carburizing means.

* Explanation of symbols for main parts of the drawings

10, 10: switch 12: main body

14a, 14b: terminal 16: inner end

18a, 18b: contact 20: switch rod

22: push button 26: connecting member

28: terminal pressing movement portion 30: blood pressing movement portion

32: receiving part 34: extension part

36: coil spring 38: camp follower

42: cam portion 44: cam body

46: groove 46: rail guide

48: drive means (solenoid device) 50: amateur

52a, 52b, 52c, 52d: stepped portion 54: rotary motion axis

56: torsion spring A, B, C, D: position

The present invention relates to a switch, and more particularly, to a switch that opens and closes a contact by a cam mechanism.

The switch which opens and closes a contact by the conventional cam mechanism is used as a push button switch of a washing machine, for example. This push button switch has a box-shaped body portion formed with a space inside. In the main body portion, there is provided a switch rod which is movable in the thickness direction of the main body portion between the openable contact and the main body portion in the thickness direction and between the first position of opening the contact point and the second position of closing the contact point.

The contact is opened and closed by moving the switch rod in the longitudinal direction.

The follower is provided with a cam follower in series. When the switch rod is moved in the longitudinal direction, the cam follower also moves along the cam portion described later, and according to this movement, the contacts continuously connected to the follower are opened and closed.

The switch rod is shot in the first position direction by the shot mechanism. Moreover, the cam part is provided in the inner end part of a switch rod. The cam portion is disposed at a position facing and abuts the cam follower, the first contact position at which the cam follower moves the switch rod to the first position, and the cam follower moves the switch rod to the second position. It has a second abutment position and is movable between a first moving position where the cam follower abuts to the first abutting position and a second moving position where the cam follower abuts to the second abutting position.

However, the switch has the following problems. Recently, electrical appliances are required to be miniaturized and thinned. Therefore, the switch is required to be thinner in relation to the attachment location in electrical appliances. By the way, in the said conventional switch, since the cam part is provided in the inner end part of a switch rod, the thickness (height) of the main body part accommodating a switch rod and a cam part must naturally be formed thick. Therefore, there is a problem that the thickness of the switch is difficult.

Therefore, an object of the present invention is to provide a switch that can be thinned.

In order to achieve the above object, the present invention includes the following configuration.

The first configuration includes a box-shaped main body portion formed with a space inside, a first contact position provided in the main body portion, which can be opened and closed, fits in the thickness direction of the main body portion, and opens the contact point. A switch rod that is extended between the second position for closing the contact and is movable in the thickness direction of the main body portion, elastic means for blowing the switch rod in the first position direction, and one end of the switch rod in the main body portion. A cam follower installed in the main body and extending in a direction perpendicular to the switch rod, the cam follower being installed at a position facing and contacting the cam follower in the main body portion. A first abutment position for moving to a first position, a second follower position for the cam follower to move the switch rod to the second position, and a cam follower to the first abutting position; And a cam portion movable between the first moving position in contact with the second moving position in which the cam follower abuts in the second contacting position.

In addition, the second configuration includes a box-shaped main body portion having an interior space formed therein, a first contact portion which is provided in the main body portion, which is fitted in the thickness direction of the main body portion and opens and closes, and simultaneously opens the contact. A switch rod between the position and the second position for closing the contact and movable in the thickness direction of the body portion, elastic means for blowing the switch rod in the second position direction, and the switch rod in the body portion. A cam follower installed at one end and extending in a direction perpendicular to the switch rod, the cam follower being installed at a position facing and abutting the cam follower in the main body, and the cam follower A first abutment position for moving to a first position and a second abutment position for the cam follower to move a switch rod to the second position, and a cam follower for the first abutment And the movable cam portion between a first moving position in contact with the position and a second moving position in which the cam follower abuts on the second engaging position.

Next, the operation will be described.

In the first and second configurations, the cam section is provided at a position facing and abutting the cam follower provided at one end of the switch section. Therefore, since the switch rod cannot be as long as the cam portion, the switch portion and the cam portion can be accommodated in the thin body portion.

EXAMPLE

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

In this embodiment, the push button switch of the washing machine is described as an example.

First, the configuration will be described.

12 is a main body part, and is formed in the box shape in which the inside was formed in space.

The main body portion is divided up and down.

14a is a terminal, and protrudes from the side surface of the main body 12. The terminal 14a is connected to a connection socket (not shown) in the washing machine when the switch 10 is assembled to a washing machine (not shown).

14b is also a terminal and protrudes horizontally from the bottom of the main body part 12. The terminal 14b is also connected to a combustion socket (not shown) when assembling the switch. The terminal 14b is formed by bending a metal plate having elasticity in a V shape. As for the terminal 14b, the inner end 16 is spun upwards by its own elastic force. In addition, the switch 10 of the present embodiment opens and closes the circuit between the terminal 14a and the terminal 14b.

18a is a contact and is provided in the inner end of the terminal 14a in the main body 12. As shown in FIG. 18b is a contact, and is provided in the inner end 16 of the terminal 14b in the main body 12. As shown in FIG. The contact 18a and the contact 18b can be opened and closed by elastic deformation of the terminal 14b. That is, in the state where external force is not applied to the terminal 14b (state of FIG. 1), the contact 18a and the contact 18b are separated, and the circuit between the terminal 14a and the terminal 14b is opened. On the other hand, in the state where the external force for pushing the terminal 14a downward is applied (state of FIG. 2), the contact 18a and the contact 18b are in contact with each other and the circuit between the terminal 14a and the terminal 14b is closed. Close and turn on.

20 is a switch rod, and is inserted in the cylindrical guide part 24 set up on the upper surface of the main body part 12. As shown in FIG. The switch rod 20 is movable in the vertical direction, which is the thickness direction of the main body 12. The movement range of the switch rod 20 is a first position (upper position shown in FIG. 1) for opening the contact 18a and the contact 18b, and a second position for closing the contact 18a and the contact 18b. (The lower position shown in FIG. 2).

22 is a push button, is fitted to the upper portion of the switch rod 20, and is fixed. The push button 22 is exposed to the outside when the switch 10 is attached to the washing machine, and the user can push the switch. That is, when the user presses the push button 22, the progressive 18a and the contact 18b are opened, and the circuit between the terminal 14a and the terminal 14b is opened and closed.

Reference numeral 26 denotes a connecting member, which enables rotational movement about an axis in the main body. Both ends of the connecting member 26 are axially attached to the inner wall surface of the main body 12. On the outer surface of the connecting member 26, two sets of terminal pressing motion portions 28, two blood pressing movement portions 30, and a receiving portion 32 extend radially outward.

The two sets of terminal pushing motions 28 abut on the upper surface of the terminal 14b having its tip bent. When the connecting member 26 rotates in the state where the contact 18a and the contact 18b shown in FIG. 1 are separated, the terminal pressing movement part 28 moves down by pressing the terminal 14b.

When the terminal 14b elastically deforms downward, the inner end of the terminal 14b moves downward to contact the contact 18a and the contact 18b, and the circuit between the terminal 14a and the terminal 14b is closed.

In the two pushing members 30, the terminal pressing members 28 are arranged on the inner shaft. As shown in FIG. 2, the to-be-pressed movement part 30 is in contact with the lower surface of the extended part 34 which extended from the both side surface of the switch rod 20. As shown in FIG. Accordingly, when the switch rod 20 moves downward in the state of FIG. 1, the extension part 34 moves downward by pressing the tip of the blood pushing portion 30. As a result, the connecting portion 26 is rotated, and the terminal pressing movement portion 28 pushes the terminal 14b downward to close the circuit between the terminal 14a and the terminal 14b as described above. The state is shown in FIG.

36 is a coil spring which is an example of the carburizing means, and is provided for improving carburizing of the switch rod 20 in the first position direction. In this embodiment, the coil spring 36 is mounted between the receiving portion 32 of the connecting member 26 and the inner wall surface of the main body portion 12. Accordingly, the coil spring 36 is in the first position direction of the switch rod 20 through the connecting member 26.

38 is a cam follower and is provided in the lower end part of the switch rod 20 in the main-body part 12 as shown in FIG. The camp follower 38 extends in a direction perpendicular to the switch rod 20. The cam follower 38 is shot outward by the spring 40 disposed in the switch rod 20.

Although 42 is a cam part and is mentioned later in detail, it is arrange | positioned in the main body part 12 in the position which opposes and contacts the cam follower 38. As shown in FIG. The cam part 42 is provided in the cam part 42 formed in the heart shape (♡) below. At least around the cam body 44, a second contact position at which the cam follower 38 moves the switch rod 20 to the second position is provided. The cam part 42 is slidable in the horizontal direction in the main body part 12. The cam part 12 moves along the rail guide 46 fixed in the main body part 12. The cam portion 42 is configured to move between a first moving position where the cam follower 38 abuts on the first abutting position and a second moving position where the cam follower 38 abuts on the second abutting position. have.

48 is a solenoid device as an example of the driving means, and is provided to forcibly move the cam portion 42 in the second moving position to the first moving position.

The solenoid device 48 is provided with an L-shaped armature 50, and when the solenoid device 48 is energized, the armature 50 attracts the inside. The tip end of the armature 50 is hung on the side of the cam portion 42. The energization of the solenoid device 48 can realize the switch which turns off automatically, for example, when energizing automatically when the predetermined | prescribed operation | movement of a washing machine is complete | finished.

Next, with reference to FIG. 4 (front view of the vicinity of the cam part 42) again, the operation | movement of the switch 10 of a present Example is demonstrated.

First, the detailed structure of the cam part 42 is demonstrated.

Grooves 46 are formed around the cam body 44. The sundan of the cam follower 38 shot by the spring 40 is always in contact with the inner surface of the groove 46. The inner surface of the groove portion 46 is composed of several inclined surfaces divided into step portions 52a, 52b, 52c, and 52d around the cam body 44. As shown in FIG.

Since the cam follower 38 is always in contact with the inner surface of the groove 46, it is possible to move the circumference of the cam body 44 in the counterclockwise direction, but if the circumference of the cam body 44 moves clockwise, the step The movement is prevented in contact with the portions 52a, 52b, 52c, and 52d. Therefore, the cam follower 38 can move only around the cam body 44 in the counterclockwise direction.

Next, the operation of the switch 10 will be described together with the operation of the cam portion 42 and the cam follower 38.

First, when the switch rod 20 is in the uppermost position, the tip of the cam follower 38 is in position A (first contact position). In this state, the cam part 42 is in a 1st moving position (position of FIG. 4). The contact 18a is separated from the contact 18b, and the switch 10 is in an OFF state.

Press the push button 22 to move down the switch rod 20. At that time, the cam follower 38 moves the groove portion 46 and moves to the position B via the step portion 52a. At this time, even if the cam follower 38 tries to move clockwise with respect to the cam body 44, movement is prevented by the stepped portion 52d, so that the cam follower 38 can be reliably moved in the B direction. In the position B, since the switch rod 20 is always shot upward by the coil spring 36, when the push down of the push button 22 is released, the switch rod 20 and the cam follower are released. 38 moves upwards. However, the cam follower 38 moved through the stepped portion 52b abuts on the lower edge of the cam body 44 at the position C, and upward movement is prevented at this position C. In addition, retrograde to the position B of the cam follower 38 is prevented by the step portion 52b. Therefore, the upward movement of the switch rod 20 is prevented, and the switch rod 20 is maintained in this position. The position of this switch rod 20 is a 2nd position, and the position C is a 2nd engagement position.

In addition, when the contact position of the cam follower 38 moves from the position B to the position C, since the position of the switch rod 20 does not move in a horizontal plane, the cam part 42 is a rail guide. Move to right along 46.

This moved position is the second moving position of the cam portion 42.

In this state, the contact 18a and the contact 18b are in contact, and the switch 10 is in an ON state.

When the switch 10 is in the ON state and the push button 22 is pressed again, the switch rod 20 moves down. At this time, the cam follower 38 moves the groove portion 46 and moves to the position D via the step portion 52c.

However, since the switch rod 20 is always shot upward by the coil spring 36, when the push button 22 is released, the switch rod 20 and the cam follower 38 move upward.

At this time, since the backing to the position C of the cam follower 38 is prevented by the step portion 52c, the contact portion D of the cam follower 38 passes through the step portion 52d again. Return to position A.

When the cam follower 38 moves from the position D to the position A, the cam portion 42 moves along the rail guide 46 to the left and returns to the first moving position.

At the same time, since the switch rod 20 also returns to the first position, the contact 18a and the contact 18b are dropped again, and the switch 10 is turned off.

In this embodiment, the switch 10 once turned ON can be automatically turned OFF again. For example, when the switch rod 20 is in the second position and the switch 10 is turned on during washing, a control device (not shown) energizes the solenoid device 48 for a short time when the washing operation is finished. . Then, the solenoid device 48 is excited and the armature 50 hanging on the side of the cam portion 42 in the second moving position is attracted to the left side. Therefore, the cam part 42 moves to the left along the rail guide 46, and returns to the first moving position again. At the same time, since the switch rod 20 also returns to the first position, the contact 18a and the contact 18b are dropped again, and the switch 10 is turned off.

Next, with reference to FIG. 5, another example of the firing means will be described.

As shown in Figs. 1 and 3, in the above-described embodiment, the coil spring 36 is used as the carcass. The coil spring 36 always shot the switch rod 20 in the first position direction through the connecting member 26. In the example shown in FIG. 5, the toe-spring spring 56 is wound around the rotating shaft 54 formed in the at least one edge part of the connection member 26. As shown in FIG. One end portion 58 of the earthenware spring 56 is caught by a locking portion 60 that extends from the connecting member 26. The other end 62 of the earthenware spring 56 is caught by a suitable member provided on the inner wall surface of the main body part (not shown). With the elastic force accumulated in the earth wire spring 56, the switch rod 20 is always shot in the first position direction through the connecting member 26.

In the embodiment described so far, the elastic means (coil spring 36 or the torsion spring 56) always spuns the switch rod 20 in the first position direction, and the cam portion 42 in the second movement position is , By means of manual or drive means (solenoid device 48), to move to the first moving position.

However, the bulleting means (coil spring 36 or the torsion spring 56) always pushes the switch rod 20 in the second position direction, and the cam portion 42 in the first moving position is manually or driven ( The solenoid device 48 may be moved to the second moving position.

The basic configuration of this second embodiment will be described.

First, the main body portion is formed in a box shape having an interior space formed therein.

The contact is provided in the main body, and can be opened and closed. The switch rod is inserted in the thickness direction of the main body portion and passes therethrough, and is movable in the thickness direction of the main body portion between the first position of opening the contact point and the second position of closing the contact point.

The carburizing means always carburizes the switch rod in the second position direction.

The cam follower is provided at an inner end of the switch rod in the main body portion and extends in a direction perpendicular to the switch rod.

The cam portion is disposed in a position opposite to and in contact with the cam follower in the main body portion, and at the same time the cam follower moves the switch rod to the first position, and the cam follower removes the switch rod. It has a 2nd engagement position which moves to a 2nd position, and is movable between the 1st movement position which a cam follower abuts to a 1st engagement position, and the 2nd movement position which a cam follower abuts to a 2nd engagement position.

Also in the second embodiment, like the first embodiment, a connection member for opening and closing the contact is arranged between the switch rod and the contact point in accordance with the movement of the switch rod, and the carbureting means connects the switch rod to the second position via the connection member. You may make it shot in a positional direction.

The cam portion in the first moving position may be moved to the second moving position by driving means such as the solenoid device 48 or manually.

As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to the above-mentioned embodiment, For example, it does not deviate from the spirit of this invention, for example, a connection base does not need to be arrange | positioned between a switch rod and a contact. Many more changes can be made without doing so.

When the switch according to the present invention is used, the cam portion is provided at a position facing and abutting the cam follower provided at one end of the switch portion. Therefore, since the switch rod does not become as long as the cam portion, the switch portion and the cam portion can be accommodated in the thin body portion. Therefore, the whole switch can be made thin, and it can be attached in a narrow space and a space, and the outstanding effect of providing a switch with universal use is exhibited.

Claims (5)

A box-shaped body portion 12 having an interior space formed therein, which is provided in the body portion 12, is fitted in the thickness direction of the contacts 18a and 18b that can be opened and closed, and the body portion 12. At the same time, it moves in the thickness direction of the main body part 12 between the first position which opens the said contact 18a, 18b, and the 2nd position which closes the contact 18a, 18b. A switch rod 20 capable of being mounted, an ejection means 36 for ejecting the switch rod 20 in the first position direction, and one end of the switch rod 20 in the main body 12; The cam follower 38 extends in a direction perpendicular to the switch rod 20, and the cam follower 38 moves the switch rod 20 to the first position in the body portion 12. A first contact position for moving and a second contact position for the cam follower 38 to move the switch rod 20 to the second position, and the cam follower 38 for the first contact. Between values abuts the first movement position, and a cam follower 38 is in contact with the second contact position a second movement position, the switch comprising: a movable cam (42). A box-shaped body portion 12 having an interior space formed therein, which is provided in the body portion 12, is fitted in the thickness direction of the contact openings 18a, 18b and the body portion 12 that can be opened and closed. And a switch movable in the thickness direction of the main body part 12 between the first position to open the contacts 18a and 18b and the second position to close the contacts 18a and 18b. A rod 20, an elastic means 36 for ejecting the switch rod 20 in the second position direction, and a general portion of the switch rod 20 in the main body 12; The cam follower 38 extends in a direction perpendicular to the 20 and the cam follower 38 is installed at a position opposite to and abuts the cam follower 38 in the main body 12. A first engagement position for moving the switch rod 20 to the first position, and a second alignment for the cam follower 38 to move the switch rod 20 to the second position. It has a negative position and is movable between a first moving position where the cam follower 38 abuts on the first abutting position and a second moving position where the cam follower 38 abuts on the second abutting position. And a cam portion (42). The contactor according to claim 1 or 2, wherein the contacts 18a and 18b are opened and closed between the switch rods 20 and the contacts 18a and 18b in accordance with the movement of the switch rods 20. A connecting member (26) is arranged, and the carbureting means (36) is characterized in that the switch bark (20) through the connecting member (26) in the first position or the second position direction. 4. The driving means (48) according to claim 1, 2 or 3, wherein the cam portion (42) in the second moving position or the first moving position is moved to the first moving position or the second moving position. Switch comprising a. 5. The switch according to claim 4, wherein said drive means is a solenoid device (48).