KR100549028B1 - Switch device - Google Patents

Abstract

An object of the present invention is to provide a switch device having a small number of parts, small size, and excellent reliability and operability.

As a means for solving this, the movable contact 7 of the switch device of the present invention is supported by the lever member 2 so that it can rotate in the cavity 1a of the case 1, and the lever member 2 In the initial state before the rotary motion, the movable contact 7 is in contact with either one of the first and second fixed terminals 4 and 5, and the movable contact is operated when the lever member 2 is rotated. (7) The switch circuit between the first and second fixed terminals 4 and 5 is switched in contact with both of the first and second fixed terminals 4 and 5.

Description

Switch device {SWITCH DEVICE}

1 is an exploded perspective view of a switch device of the present invention.

2 is a cross-sectional view 2-2 of a case according to the present invention.

3 is a sectional perspective view of a main portion of a lever member according to the present invention.

4 is a sectional view of principal parts of the switch device of the present invention.

5 is a sectional view showing the principal parts of the operation of the switch device of the present invention.

6 is a sectional view showing the principal parts of the operation of the switch device of the present invention.

7 is an exploded perspective view of a conventional switch device.

8 is a sectional view of principal parts of a conventional switch device.

9 is a sectional view showing the principal parts of the operation of the conventional switch device.

* Explanation of symbols for the main parts of the drawings *

1: case 1a: cavity

1f: snap hole 1g: through-terminal insertion hole

2: lever member 2a: main body

2b: control panel 2c: stopper wall

3: wafer 3a: support wall

3b: spring support 3c: spring receiving portion

4: first fixed terminal 4a: base

4b: contact portion 4c: connection portion

5: 2nd fixed terminal 5a: base

5b: contact portion 5c: connection portion

6: elastic member 7: movable contact

The present invention relates to a switch device, and relates to a switch device capable of switching a switch circuit between two fixed terminals.

As shown in FIG. 7, the conventional switch device has a case 21 having a substantially rectangular shape, and the case 21 has a lower surface side of the cavity portion 21a formed therein at the side wall 22. It is shielded by.

The lever 23 extends and is supported by the right edge part of the cavity part 21a immediately before shown, and the support part 23a formed in this lever 23 is the support part 22a of the side plate 22. It is supported by the support rod (not shown) etc. which are supported by the lever, and the lever 23 makes the rotational movement free with the support part 23a as a point.

The lever 23 has a pressing portion 23b extending in the left direction from the supporting portion 23a and an operating portion 23c extending in the right direction, and the shape is substantially square. And while the press part 23b is located in the cavity part 21a, the operation part 23c protrudes outward from the cavity part 21a, and is formed.

Moreover, the slider 24 is arrange | positioned at the cavity part 21a inside the case 21, and this slider 24 is the press part 23b of the lever 23 by the elastic support force of the coil spring 25. It is elastically supported by. And the slider 24 is slid in the linear direction of the direction which compresses the coil spring 25 by rotating the lever 23 in the arrow A direction.

In addition, the lever 23 has a long dimension from the support part 23a to the operation part 23c with respect to the dimension from the support part 23a to the front-end | tip of the press part 23b.

For this reason, even if the force applied to the operating part 23c of the lever 23 is small, the slider 24 can be easily slid against the elastic bearing force of the coil spring 25. FIG.

The slider 24 is supported by a movable contact 26 formed by bending a metal plate in a clip shape, and the movable contact 26 is slidable together with the sliding of the slider 24.

The left side of the cavity portion 21a of the case 21 is opened, and the support portion 27a of the wafer 27 can be attached to the open portion.

The wafer 27 is made of a resin material, and the first and second fixed terminals 28, 29 made of a metal plate are insulated and supported by insert molding or the like, respectively.

And the support part 27a of the wafer 27 protrudes toward the cavity part 21a side, and the contact part 28a, 29a of the 1st, 2nd fixed terminal 28, 29 is connected by the insulating part 27b. It is insulated and formed. The insulating portion 27b between the contact portions 28a and 29a is formed to have the same thickness as the contact portions 28a and 29a.

Moreover, the wafer 27 in the state in which the support part 27a is supported by the case 21 has the base 27c located in the outer side of the cavity part 21a of the case 21, and the both ends of this base 27c. It extends and protrudes downward shown from the lower part, and a pair of protection part 27d, 27d is formed.

From the central portion of the base 27 sandwiched between the pair of protection portions 27d and 27d, a terminal lead portion 27e is formed to protrude in the same direction as the protection portion 27d.

Terminal portions 28b and 29b formed on the insert-shaped first and second fixed terminals 28 and 29 are drawn out to the protection portion 27d side and exposed to the terminal lead portion 27e. And each of the exposed terminal portions 28b, 29b can be guarded by the protect portions 27d, 27d.

The terminal portions 28b and 29b are bent into a substantially U-shape so that plugs (not shown) or the like can be connected from the outside.

In the conventional switch device, the slider 24 is shown on the right side by the elastic bearing force of the coil spring 25 in the initial state before the lever 23 is operated in rotation. The movable contact 26 is in contact with the contact portion 28a of the first fixed terminal 28.

In the operation of the conventional switch device having such a configuration, first, the lever 23 in the initial state shown in FIG. 8 is rotated in the arrow A direction.

Then, the slider 24 pressed by the pressing part 23b of the lever member 22 linearly slides in the left direction shown, and the coil spring 25 is compressed.

In addition to sliding of the slider 24, this movable contact 26 also linearly slides in the same direction.

And the movable contact 26 which was in contact with the contact part 28a of the 1st fixed terminal 28 is the contact part 28a and the 2nd fixed terminal of the 1st fixed terminal 28 as shown in FIG. In contact with both of the contact portions 29a of (29), the switch circuit between the first and second terminals 28, 29 is switched.

Moreover, when releasing the operating force of the arrow A direction applied to the operating part 23c of the lever 23, the slider 24 will slide to the right direction shown by the elastic support force of the coil spring 25, and the movable contact ( 26) The switch circuit automatically returns to the initial state apart from the contact portion 29a of the second fixed terminal 29. As shown in FIG.

(Patent Document 1)

Japanese Utility Model Publication No. 63-20335

However, the movable contact 26 of the conventional switch device as described above was supported by the slider 24, and the switch 24 was switched by linearly sliding the slider 24 by rotating the lever 23. Therefore, there was a problem that the number of parts increased.

In addition, when the lever 23 rotates, frictional force is generated by sliding the pressing section 23b and the slider 24, and there is a fear that the operating force of the lever 23 becomes heavy.

Moreover, in order to reduce the operating force of the lever 23, since the length dimension from the support part 23a to the operation part 23c is formed long with respect to the length dimension of the press part 23b from the support part 23a, the conventional There was a problem that the appearance of the switch device is increased.

The present invention has been made in view of the above problems, and an object thereof is to provide a switch device having a small number of parts, small size, and excellent reliability and operability.

As a first solution for solving the above problems, the switch device of the present invention comprises a first and a second fixed terminal arranged insulated from each other in a cavity inside the case, and on both of the first and second fixed terminals. A movable contact capable of contacting and a lever member freely supported by a rotational movement in the case, wherein the movable contact can freely rotate in the case while being supported by the lever member, and the lever member In the initial state before the rotary motion, the movable contact is in contact with either of the first and second fixed terminals. When the lever member is operated to rotate, the movable contact is operated in the first and second directions. The switch circuit between the first and second fixed terminals is switched in contact with both sides of the fixed terminals.

Moreover, as a 2nd solution means for solving the said subject, the said 1st, 2nd fixed terminal is respectively provided with the contact part which the said sliding contact can make sliding contact, and each said contact part rotates of the said movable contact point. It is characterized by being formed in an arc shape along the motion trajectory.

Further, as a third solution for solving the above problem, the movable contact includes a first contact portion capable of sliding contact with the contact portion of the first fixed terminal, and a contact portion of the second fixed terminal. A second contact portion capable of sliding contact is formed, the contact portion of the first fixed terminal is formed longer than the contact portion of the second fixed terminal, the first contact portion of the movable contact is always in contact with,

When the lever member is operated to the rotational movement, the second contact portion of the movable contact is characterized in that the contact with the second fixed terminal.

Moreover, as a 4th solution means for solving the said subject, the said 1st, 2nd fixed terminal consists of a plate-shaped electroconductive member, The said movable contact is a contact part of each of the said 1st, 2nd fixed terminals, respectively. The sliding contact can be performed while sandwiching the plate thickness direction therebetween.

Further, as a fifth solution for solving the problem, the lever member is characterized in that the second contact portion of the movable contact is always elastically supported in a direction away from the contact portion of the second fixed terminal. do.

In addition, as a sixth solution for solving the above problems, the lever member has a main body that can freely support the movable contact in the cavity, the case, the open side of the cavity A shieldable wafer is disposed, and when the lever member is operated in the rotational motion, a part of the main body portion comes into contact with the wafer to stop the rotational motion of the lever member.

Embodiment of the invention

EMBODIMENT OF THE INVENTION Next, embodiment of the switch apparatus of this invention is described based on drawing. 1 is an exploded perspective view of a switch device of the present invention, Figure 2 is a 2-2 cross-sectional view of the case according to the present invention, Figure 3 is a sectional perspective view of the main portion of the lever member according to the present invention, Figure 4 is a switch of the present invention Fig. 5 and Fig. 6 are main sectional views illustrating the operation of the switch device of the present invention.

First, as shown in FIG. 1, as for the switch device 1 of one Embodiment of this invention, the case 1 which consists of a resin material etc. in which the external shape was formed in substantially cube shape is arrange | positioned. As shown in FIG. 2, this case 1 is provided with the cavity part 1a in which the one side of the lower side shown was opened.

The cavity portion 1a of the case 1 is formed surrounded by a first side plate 1b having a large area where the outer circumferential portions face each other and a second side plate 1c having a small area.

In addition, in the case 1, the upper side of the cavity part 1a is shielded by the top plate 1d formed in the upper side shown, and the lever member 2 mentioned later can pass through this top plate 1d. The lever insertion hole and the hole 1e which are provided are formed.

The first side plates 1b facing each other are formed with the vertically long snap holes 1f and 1f formed on the lower side thereof, and the upper side and the outside of the snap holes 1f and 1f such as sockets. Insertion through holes (1g, 1g) through which connecting members (not shown) can be inserted are formed through, and in the cavity 1a of the portion where the insertion holes (1g, 1g) are formed, The terminal portions 4c and 5c of the second fixed terminals 4 and 5 are positioned.

Further, the lever member 2 disposed in the cavity 1a of the case 1 and free of rotational movement is made of a resin material or the like, and a main body portion 2a is formed on the lower side, and the main body portion 2a is provided. It extends obliquely upward from the operation part 2b is formed.

And as shown in FIG. 4, the operation part 2b is made to pass through the lever insertion cylinder and hole 1e formed in the top plate 1d of the case 1 to the upper side shown.

Moreover, the stopper walls 2c and 2c which have predetermined thickness and width dimension protrude in the left-right direction from the main-body part 2a which is the base part of the operation part 2b.

In the illustrated inner side of the main body 2a, a supporting hole 2d through which the supporting rod 3b of the wafer 3 to be described later can be inserted is formed. In addition, as shown in FIG. 3, the lever member 2 is the 1st cavity part which can accommodate the elastic member 6 mentioned later in the main-body part 2a of the part in which the support hole 2d was formed. (2e) is formed.

In addition, a second cavity portion 2f capable of housing and supporting the movable contact 7 described later is formed just before the first cavity portion 2e shown, and the second cavity portion 2f is formed. On the lower side of the side wall of the main-body part 2a which comprises it, a pair of support protrusion 2g, 2g protrudes inward.

In addition, on the upper part of the second cavity 2f, a third cavity 2h in which the first and second fixed terminals 4 and 5 described later can be located is formed.

Moreover, the slit groove 2j is formed in the longitudinal direction shown in the side wall of the main-body part 2a which comprises the 2nd cavity part 2f.

Moreover, the case 1 has one side which is the lower side of the cavity 1a open, and the wafer 3 which can shield this open part is arrange | positioned. The wafer 3 is made of a resin material, and a part of the first fixed terminal 4, which is a common terminal, and the second fixed terminal 5, which is an individual terminal, is embedded, supported, and insulated from each other by insert molding or the like.

Moreover, from the wafer 3, the support wall 3a protrudes upwards, The rod-shaped spring support part 3b which can support the elastic member 6 mentioned later on this support wall 3a is provided. It is formed integrally.

In the lower part of the said spring support part 3b, the spring accommodating part 3c which a cross section protrudes in substantially semicircle shape is formed, and the one end part 6a of the elastic member 6 mentioned later can make elastic contact.

Moreover, the projection part 3d, 3d which can be engaged with the snap hole 1f, 1f of the case 1 is protruded from the side surface of the wafer 3.

The first fixed terminal 4 is disposed with the base 4a embedded in the illustrated inner side of the wafer 3, and the second fixed terminal 5 is provided with the base just in front of the illustrated wafer 3. 5a is embedded and disposed. And the base part 4a of the 1st fixed terminal 4 embedded in the wafer 3 has the contact part 4b which curved in the arc shape which protrudes upwards from the wafer 3 on the front side immediately before shown in predetermined height. It is formed. Further, the base portion 4a of the first fixed terminal 4 is provided with a terminal portion 4c to which a connecting member (not shown) such as a plug can be connected, and the terminal portion 4c is substantially U. As shown in FIG. It is bent in a shape of a child and is exposed to the upper side from the wafer 3.

Further, the base 5a of the second fixed terminal 5 embedded in the wafer 3 is adjacent to the contact portion 4b of the first fixed terminal 4 on the inner side shown in the drawing, so that the first fixed terminal 4 The contact portion 5b, which is curved in an arc shape in the same direction as the contact portion 4b of, is projected upward from the wafer 3.

The height dimension of the contact portion 5b of the second fixed terminal 5 is formed lower than the contact portion 4b of the first fixed terminal 4. That is, the contact portion 4b of the first fixed terminal 4 is formed longer than the contact portion 5b of the second fixed terminal 5.

In addition, the second fixed terminal 5 is a terminal portion 5c to which a connecting member (not shown) such as a plug can be connected to the immediately front side of the illustration, which is a position separated from the contact portion 5b with the base 5a interposed therebetween. ) Is formed, and this terminal portion 5c is formed to be bent in a substantially U-shape to be exposed upward from the wafer 3.

The first and second fixed terminals 4, 5 are sandwiched between the respective base portions 4a, 5a, and the contact portions 4b, 5b and the respective terminal portions 4c, 5c are separated from each other. Since it is formed, it is possible to prevent foreign substances such as sparks generated when connecting connecting members such as plugs to the terminal portions 4c and 5c to scatter on the respective contact portions 4b and 5b.

The contact parts 4b and 5b of the said 1st, 2nd fixed terminal 4, 5 are the rotary motion of the below-mentioned movable contact 7 accommodated and supported by the 2nd cavity part 2f of the lever member 2. As shown in FIG. It is formed in arc shape along the trajectory.

Moreover, the spring support part 3b of the wafer 3 is able to support the elastic member 6 which consists of a twisted coil spring, and this elastic member 6 has one end part 6a and the other end part 6b. ) Is formed to lead outward with a predetermined angle.

And the elastic member 6 in the state supported by the spring support part 3b has the one end part 6a elastically contacting the spring accommodating part 3c of the wafer 3, and the other end part 6b is a lever member ( In contact with the stopper wall 2c on the right side of 2), the lever member 2 is elastically supported upward with the support hole 2d as a point.

In the second cavity 2f of the lever member 2, a movable contact 7 formed by bending an elastic metal plate in a substantially U-shape is accommodated.

The movable contact 7 has connecting portions 7a and 7a at both ends, and plate-shaped first and second contact portions 7b and 7c having clip shapes are formed between the connecting portions 7a and 7a. .

And when the movable contact 7 is accommodated in the 2nd cavity part 2f of the lever member 2, it is supported by the support protrusions 2g and 2g, and movement is restrict | limited.

As for the movable contact 7 supported by the 2nd cavity part 2f of the said lever member 2, by the rotation movement operation of the lever member 2, the 1st, 2nd contact parts 7b and 7c are made into 1st. The plate-shaped contact portions 4b and 5b of the first and second fixed terminals 4 and 5 are sandwiched therebetween, and sliding contact is performed along the arc-shaped contact portions 4b and 5b.

In assembly of the switch device of the first embodiment of the present invention having such a configuration, first, the movable contact 7 is inserted into and supported by the second cavity 2f of the lever member 2.

Next, the elastic member 6 is inserted into and supported by the spring support 3b of the wafer 3 in which the first and second fixed terminals 4 and 5 are embedded by insert molding or the like, and at the same time, a spring having a rod shape. The support portion 3b is inserted into the support hole 2d of the lever member 2 to support the lever member 2 on the wafer 3.

In this case, the movable contact 7 is stored and supported in the second cavity 2f of the lever member 2 in advance.

Next, when the wafer 3 supporting the lever member 2 is inserted into the cavity 1a from the opened lower side of the case 1, the operation portion 2b of the lever member 2 moves through the lever insertion hole. It is inserted upward from (1e).

At the same time, the projection 3d of the wafer 3 is engaged with the snap hole 1f of the case 1, and as shown in FIG. 4, the first contact portion 7b of the movable contact 7 is provided. An initial state is brought into contact with the contact portion 4c of the first fixed terminal 4, and the switch device of the present invention is assembled.

In addition, the respective terminal portions 4c and 5c of the first and second fixed terminals 4 and 5 are located near the insertion passage hole 1g of the case 1, and insert connection members such as plugs from the outside. When inserted into the through hole 1g, it is connected to each terminal part 4c, 5c.

Referring to the operation of the switch device of the present invention assembled as described above, in the initial state before the operation, as shown in Fig. 4, the lever member 2 rotates upward by the elastic support force of the elastic member 6 The stopper wall 2c is in contact with the top plate 2d of the case 1.

The first contact portion 7b of the movable contact 7 in this initial state is in contact with the contact portion 4b of the first fixed terminal 4.

Then, when the lever member 2 in the initial state is rotated in the direction of the arrow B, as shown in FIG. 5, the first contact portion 7b is connected to the contact portion 4b of the first fixed terminal 4. In the contacted state, the second contact portion 7c of the movable contact 7 contacts the contact portion 5b of the second fixed terminal 5 by a small amount of rotational movement. As a result, the first and second fixed terminals 4 and 5 are conducted via the movable contact 7, and the switch circuit between the first and second fixed terminals 4 and 5 is switched.

Since the movement of the movable contact 7 at this time is regulated in the second cavity 2f of the lever member 2, since it faithfully follows the rotational movement operation of the lever member 2, the lever moves. Even if the rotational movement amount of the member 2 is small, the switch circuit can be reliably switched.

Further, as shown in Fig. 6, the lever member 2, which has been operated for rotational movement, is rotated again by an inertial force so that the movable contact 7 has an arc shape of the first and second fixed terminals 4,5. It falls along the contact parts 4b and 5b.

And when the operation part 2b falls by the predetermined stroke amount, the edge part which is a part of the main-body part 2a of the lever member 2 abuts on the inner surface of the wafer 3, and the rotational movement of the lever member 2 will stop. .

Thereafter, when the operation load of the lever member 2 applied in the direction of the arrow B is released, the lever member 2 automatically returns to the initial state shown in FIG. 4 by the elastic support force of the elastic member 6. As a result, the second contact portion 7c of the movable contact 7 is separated from the second fixed terminal 5, and the switch circuit returns to the initial state.

Since the switch device of the present invention as described above supports the movable contact 7 directly to the lever member 2, the slider 24 as described in the prior art becomes unnecessary, so that the number of parts can be reduced. .

Further, following the rotational movement of the lever member 2, the movable contact 7 can also be reliably rotated, so that variation in the switching timing of the switch circuit can be reduced.

In the description of the first embodiment of the present invention, the first contact portion 7b of the movable contact 7 has been described as always in contact with the contact portion 4b of the first fixed terminal 4, but the movable contact ( The second contact portion 7c of 7) may always be in contact with the contact portion 5b of the second fixed terminal 5.

That is, in the present invention, in the initial state before the lever member 2 rotates, the movable contact 7 may be in contact with either of the first and second fixed terminals 4 and 5.

In addition, although the 1st, 2nd fixed terminal 4 and 5 were demonstrated with the metal plate, the 1st, 2nd fixed terminal 4 and 5 may be an electroconductive member which metal-plated the plate-shaped resin material, for example. .

In addition, although the elastic member 6 was demonstrated with the twisted coil spring, the elastic member 6 should just be what supports the lever member 2 elastically freely by the rotational motion.

In the initial state before the lever member of the switch device of the present invention rotates, the movable contact is in contact with either of the first and second fixed terminals. When the lever member is operated to rotate, the movable contact is removed. Since the switch circuits between the first and second fixed terminals are in contact with both the first and second fixed terminals, the movable contact is directly supported by the lever member so that the switch circuit can be switched. It is possible to provide a switch device capable of reducing the cost by reducing the number of parts by eliminating the same slider.

Further, since the lever member is operated to rotate in the state in which the movable contact is directly supported, the lever member can be operated to rotate with a small operating force, so that the operability is good.

Further, the first and second fixed terminals are each provided with contact portions capable of sliding contact with the movable contact, and each of the contact portions is formed in an arc shape along the rotational movement trajectory of the movable contact. Switching operation is possible.

Further, the contact portion of the first fixed terminal is formed longer than the contact portion of the second fixed terminal so that the first contact portion of the movable contact is always in contact with the second contact portion of the movable contact. Since the two fixed terminals are in contact with each other, it is possible to provide a switch device having excellent reliability and operability that can reliably switch the switch circuit with a small amount of rotational movement of the lever member.

In addition, since the movable contact can make sliding contact with the plate | board thickness direction of each contact part of a 1st, 2nd fixed terminal sandwiched between them, a movable contact is a plate of a 1st, 2nd fixed terminal. Both surfaces in the thickness direction are in sliding contact, and the movable contact can be brought into contact with the first and second fixed terminals with reliability.

Further, since the lever member is always elastically supported in the direction in which the second contact portion of the movable contact falls from the contact portion of the second fixed terminal, the lever member can automatically return the lever member after the rotational movement operation, and thus the operability is good.

In addition, when the lever member is operated to rotate, the main body of the lever member is brought into contact with the wafer so that the rotation of the lever member is stopped. Thus, a switch device having good operability can be provided.

Claims (6)

First and second fixed terminals disposed to be insulated from each other in the cavity inside the case; a movable contact capable of contacting both of the first and second fixed terminals; and a lever member freely supported by the rotational movement in the case. And The movable contact can freely rotate inside the case while being supported by the lever member, and in the initial state before the lever member rotates, the movable contact is one of the first and second fixed terminals. Will be in contact with either side, And the movable contact is in contact with both of the first and second fixed terminals so that the switch circuit between the first and second fixed terminals is switched. The said 1st, 2nd fixed terminal is formed with the contact part in which the said movable contact makes sliding contact, respectively, and each said contact part is formed in circular arc shape along the rotational motion trace of the said movable contact. The switch device characterized by the above-mentioned. 3. The movable contact of claim 2, wherein the movable contact includes: a first contact portion capable of sliding contact with the contact portion of the first fixed terminal; and a second sliding contact portion of the second fixed terminal with the contact portion; A contact portion is formed, the contact portion of the first fixed terminal is formed longer than the contact portion of the second fixed terminal, and the first contact portion of the movable contact is always in contact; And the second contact portion of the movable contact makes contact with the second fixed terminal when the lever member is operated by the rotational movement. The said 1st, 2nd fixed terminal is a plate-shaped electroconductive member, The said movable contact is a plate | board thickness direction of each contact part of the said 1st, 2nd fixed terminal sandwiched in between. And the sliding device can perform the sliding contact in a state. 4. The switch device according to claim 3, wherein the lever member is always elastically supported in a direction in which the second contact portion of the movable contact is separated from the contact portion of the second fixed terminal. The method of claim 1, wherein the lever member has a main body portion capable of freely supporting the movable contact in the cavity of the movable portion, the case, the wafer is disposed to shield the open side of the cavity portion And switching the lever member to the rotational movement so that a part of the main body portion comes into contact with the wafer to stop the rotational movement of the lever member.

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