JPH09320391A - Switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a switch which hardly generates a poor contact, and facilitates the change in the switch specification. SOLUTION: A pair of fixed contacts 18a and 18b are installed to a body 12 by separating each other. A lever member 36 has the first lever body 42 provided rotatable by making a support shaft 30 as the center. A brush member 58 is installed to the first lever body 42, and it can move between the ON position to make the pair of fixed contacts 18a and 18b in the connecting condition electrically following the rotation of the first lever body 42, and the OFF position to make them in the nonconnecting condition. While the pair of fixed contacts 18a and 18b are formed on a printed circuit board 16 by conductive patterns 20a and 20b, they are installed on the body 12 through the printed circuit board 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open / close switch for electrically connecting or disconnecting a pair of fixed contacts by rotating a lever member.

[0002]

2. Description of the Related Art A conventional open / close switch 100 is shown in FIG.
This will be described with reference to FIG. Reference numeral 102 denotes a body portion, which is formed in a box shape using a synthetic resin material. The body portion 102 is a base 104 shown in FIGS. 11 and 12.
And a cover (not shown) attached to the base 104 from above the base 104 to form a box shape. Reference numeral 106 denotes a pair of fixed contacts, which are formed in a rod shape using a conductive metal material. Each fixed contact 106 is
The base 104 is press-fitted into the inside of the base 104 from the outside of the base 104 in parallel with each other along the inner bottom surface of the base 104 at a predetermined distance, and is fixed so that the surface of the inner bottom surface of the base 104 is exposed.

Reference numeral 108 denotes a lever member mounted on the base 104 so as to be rotatable about the first rotation axis A. The first rotation axis A is orthogonal to the inner bottom surface of the base 104. The first rotation axis A is located between virtual extension lines of the fixed contacts 106. The lever member 108 is provided with a first fulcrum 110 projecting to both upper and lower sides along the first rotation axis A, and the first fulcrum 110 is provided in a recess 112 provided in the base 104 and the cover. It has a structure in which the lever member 108 is rotatably attached by being inserted. Reference numeral 114 is a brush member attached to one end of a lever member 108 that is rotatable inside the body portion 102. The brush member 114 is formed in one tongue shape using an elastic conductive metal material, and one end side thereof is the lever member 108.
Is attached to the lower surface of one end (the surface facing the inner bottom surface of the base 104), and the other end has a pair of fixed contacts 1 having a width in the rotation direction.
It is formed wider than the distance between 06. The brush member 114 has one end side, and the other end side is obliquely bent toward the inner bottom surface of the base 104.

The brush member 114 is the lever member 1.
When the 08 is rotatably attached between the base 104 and the cover, the length of the rotation track of the wide end formed on the other end side (hereinafter, the wide portion 116) traverses the fixed contact 106. The brush member 114 itself is elastically deformed in the direction of the lever member 108, and the wide portion 116 is in contact with the fixed contact 106. That is, the wide portion 116 is always biased toward the fixed contact 106 side by the elastic force of the brush member 114 itself. Then, when the lever member 108 is rotated,
Along with that, the brush member 114 also rotates, and the brush member 1
The wide portion 116 of 14 moves while sliding between the fixed contacts 106. Then, at the ON position where the wide portion 116 is located between the two fixed contacts 106, the two fixed contacts 106 are electrically connected to each other, and the wide portion 116 has one fixed contact 1
In the off position where only the contact point 06 is contacted, both fixed contacts 106 are electrically disconnected.

[0005]

However, the conventional open / close switch described above has the following problems. When the wide portion 116 of the brush member 114 traverses the fixed contact 106, the wide portion 116 crosses over the fixed contact 106 which is projected and exposed from the inner bottom surface of the base 104, so that the brush member 114 has a direction substantially orthogonal to the longitudinal direction. External force acts from. Therefore, when the switch is repeatedly turned on and off, the brush member 114 bends, and the wide portion 116 is moved to the both fixed contacts 10.
6 is not evenly contacted, resulting in one-sided contact, resulting in contact failure. Further, the fixed contact 106 is fixed to the base 104 by press fitting, but at this time, the amount of protrusion from the inner bottom surface of the base 104 tends to vary, which also causes a contact failure. Further, since the fixed contact 106 is fixed by press fitting, the position of the fixed contact 106 is designed according to the shape of the base 104. Therefore, once the shape of the base 104 has been determined, the arrangement and number of the fixed contacts 106 cannot be changed at all. For example, in this conventional example, the contacts are in the ON state at the midpoint position of the lever member 108. However, in order to change the specification to the off state, it is necessary to redesign the structure of the base 104 from the beginning, and it is difficult to change the specification. Further, the moving distance of the wide portion 116 is the same as that of the first rotation axis A of the lever member 108 and the wide portion 11.
6 or the amount of rotation of the lever member 108 itself. Therefore, if the lever member 108 and the brush member are lengthened in order to increase the moving distance of the wide portion 116 due to the arrangement of the fixed contacts 106, the size of the open / close switch becomes large. Further, if the amount of rotation of the lever member 108 is increased, there is a problem that the stroke required for switching the contacts on and off increases and the operability deteriorates.

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide an open / close switch in which contact failure is unlikely to occur and the switch specifications can be easily changed.

[0007]

The present invention has the following constitution in order to achieve the above object. That is, at least a pair of fixed contacts attached to the body portion so as to be separated from each other, a lever member rotatably provided on the body portion about a first rotation axis, and attached to the lever member, An opening / closing switch having a brush member movable between an on position that electrically connects the pair of fixed contacts and an off position that electrically disconnects the pair of fixed contacts in accordance with the rotation of the lever member. The fixed contact is formed on the printed circuit board with a conductor pattern and is attached to the body through the printed circuit board. If this configuration is adopted, the fixed contact can be easily changed in specifications only by changing the conductor pattern. In addition, the fixed contacts can be arranged with higher accuracy than the case where the rod-shaped fixed contacts are press-fitted, the height variation between the fixed contacts can be reduced, and the thickness of the fixed contacts can be reduced. The external force applied to the brush member is reduced when is connected to the fixed contact, the deformation of the brush member is suppressed, and the contact failure is eliminated.

Further, the lever member has a first lever body rotatable about the first rotating shaft and a second rotating shaft parallel to the first rotating shaft. A second member that is rotatably provided on the body portion and that is engaged with an action point of the first lever body and rotates with the rotation of the first lever body.
And a pair of brush pieces that are attached to the second lever body and are in contact with each of the pair of fixed contacts. If the contact portion of the first lever body is arranged at a distance from the point of action of the first lever body with respect to the second rotation axis, the brush piece is moved from the movement distance of the point of action of the first lever body. It is possible to increase the moving distance of the switch and it is possible to realize switches of various specifications in combination with the fixed contact formed of the conductor pattern. Further, even if the stroke amount of the lever member (first lever body) is small, the switch can be reliably switched.

The lever member includes a first lever body rotatable about the first rotation shaft, the lever member extending from the first lever body, and the first rotation shaft. Has a circular arc-shaped hole extending along the same circumference with the center as the center, and the restriction shaft provided in the body portion is inserted into the circular arc-shaped hole to
A lever body that is rotatable about a first rotation axis within a predetermined angle range, and the lever member is a central plane orthogonal to the first rotation axis. Is formed in a symmetrical shape with respect to the front and back sides, and the brush member is attachable to both the front and back sides of the first lever body, and a pair of brush pieces contacting each of the pair of fixed contacts is provided. With this configuration, the lever member can be mounted even if the lever member is turned upside down with respect to the body portion, and the fixed contact is formed on the printed circuit board by a conductor pattern, so that the position and shape can be easily changed. It is possible to manufacture left and right swing open / close switches without making major changes such as changing the mold.

Further, if the pair of brush pieces are configured to extend in an arc shape along the same circumference with the second rotation axis as a center, they are added to the brush pieces when the fixed contacts are crossed over. The direction of external force can be the extension direction of the brush piece,
The bending of the brush piece can be reduced as compared with the case where an external force is applied from the lateral direction. Further, the number of parts can be reduced by using a part of the wall surface of the body portion, for example, the base instead of the printed circuit board.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the open / close switch according to the present invention will be described in detail below with reference to the accompanying drawings. First, the structure of the open / close switch 10 will be described with reference to FIGS.
This will be described with reference to FIG. Reference numeral 12 denotes a box-shaped body portion, which has a cover 14 made of a synthetic resin material, and a printed board 16 which is connected to the cover 14 and constitutes one wall surface of the body portion 12. And printed circuit board 1
On the surface of the cover 6 on the cover 14 side, the conductor pattern 2 whose one end forms one of the pair of fixed contacts 18a and 18b, respectively.
Two 0a and 20b are formed. The other end of each conductor pattern 20a, 20b is an external lead wire (not shown).
Land 22 for attaching by soldering or the like
Is formed. Although a glass epoxy material is used for the printed circuit board 16 in consideration of the small warpage and strength, other materials may be used depending on the application.
May be used for.

The structure of the cover 14 will be described in detail. The cover 14 is formed in a thin box shape (a hexagonal cylindrical body having a bottom as an example in the present embodiment) using a synthetic resin material, and is printed. The structure is such that one surface (upper surface in FIG. 1) in the thickness direction (vertical direction) to which the substrate 16 is connected is open. In addition, a part of the side wall 24 is cut out,
A pair of columnar bodies 28 a and 28 b protruding toward the opening side along the thickness direction is formed in a part of the notch portion 26 and the side wall 24. In addition, on the inner surface of the cover 14, the pair of columnar bodies 2
A support shaft 30 projecting toward the opening side is formed in an intermediate portion between 8a and 28b in parallel with the columnar bodies 28a and 28b. The height of the support shaft 30 is formed to be the same as the height of the side wall 24, and when the printed circuit board 16 is connected to the cover 14, the tip thereof comes into contact with the printed circuit board 16 without pressing the printed circuit board 16. ing.

Reference numeral 32 designates a pair of elastic locking pieces 32 for fixing the body portion 12 to a device (not shown), which extends so as to face the side wall 24 of the cover 14 at a distance. The extending direction is parallel to the protruding direction of the columnar bodies 28a and 28b, and the mutual interval is formed to be slightly longer than the width of the printed board 16. The printed circuit board 16 is formed in a rectangular shape having an area capable of covering the opening portion of the cover 14 as an example.
A through hole 34 through which a and 28b can be inserted is provided corresponding to the columnar body. The conductor patterns 20a and 20b formed on the printed circuit board 16 are formed in a shape as shown in FIG. 3 as an example, and the fixed contacts 18a and 18b and the land 22 are formed.
And a pair are formed respectively.

Reference numeral 36 denotes a lever member, which is rotatable about a first lever body 42 rotatable about a first rotating shaft and a second rotating shaft parallel to the first rotating shaft. Freely move the body 12
Is provided on the first lever body 42, and has an action point 40 that engages with the first lever body 42.
A second lever body 3 capable of rotating 2 around the first rotation axis
8 is provided. Each lever body 38, 42 will be described in detail. First, from the second lever body 38,
The second lever body 38 is formed of a long length using a synthetic resin material, and the second insertion hole 44 into which the columnar body 28a provided in the cutout portion 26 of the cover 14 as the second rotation shaft can be inserted. Is provided, and the point of action 4 is projected on one end side.
The columnar body 28a is inserted into the second insertion hole 44 so that the other end of the columnar member 28a is located inside the cover 14 and the other end side of the columnar member 28a is rotatably attached to the cover 14.

The second insertion hole 4 of the second lever body 38
4 and the point of action 40, a contact protrusion 48 that contacts both ends of a coil spring 46 fitted on the columnar body 28a so as to be located between the second lever body 38 and the cover 14. A pair is provided. When the second lever body 38 is rotated by an external force, the contact protrusion 48 comes into contact with the coil spring 46 to elastically deform the coil spring 46, and when the external force is released, the coil spring 46 is attached. The second lever body 38 is rotated to the original position by the urging force via the contact protrusion 48. In this way, in the state where the external force is not applied to the second lever body 38,
It will be located on the straight line connecting the pair of columnar bodies 28a and 28b.

Subsequently, the first lever body 42 is formed in a disk shape using a synthetic resin material in accordance with the shape of a brush member described later as an example, and the cover 14 is formed in the central portion of both surfaces.
The cylindrical body portion 52 is provided with the first insertion hole 50 through which the support shaft 30 as the first rotation shaft provided in the first insertion hole 50 can be inserted. The length of the tubular portion 52 is the same as the length of the support shaft 30. Further, a pair of welding protrusions 54 is formed on one surface of the first lever body 42 in the same circumferential shape with the first insertion hole 50 as the center and at point symmetrical positions. An engagement groove 56 that engages with the action point 40 of the second lever body 38 is formed on the other surface along the radial direction.

Reference numeral 58 is a brush member, which is formed in a substantially disk shape using a conductive metal material formed in a thin plate shape. A detailed structure will be described with reference to FIG. 3. The brush member 58 has a disk-shaped part cut away to form a pair of arc-shaped brush pieces 60 extending in the circumferential direction. ing. This brush piece 60 has a first
The cylindrical body portion 52 of the lever body 42 is formed so as to be point-symmetrical about the third insertion hole 62 through which it can be inserted, and the tip portion comes into contact with a pair of fixed contacts formed on the printed circuit board 16. Two contact protrusions 64 are formed as an example. Each brush piece 60 is bent from its root portion in the surface direction in which the contact protrusion 64 is provided, as shown in FIG.

Further, in this embodiment, each brush piece 60
Further, a notch groove 66 is provided along the circumferential direction from the tip to the root portion direction, and each contact protrusion 64 is located at the tip of the independent extending piece 68. With this structure, even if the contact protrusions 64 of the brush piece 60 cannot simultaneously ride over the edge portions of the conductor patterns 20a and 20b formed on the printed circuit board 16 in view of the mechanism and the manufacturing precision of the conductor patterns, the contact protrusions 64a and 60b are not formed. It is possible for 64 to swing independently of the root portion and to ride over the edges of the conductor patterns 20a and 20b, so that two contact protrusions 64 are formed on the same brush piece 60. The force in the twisting direction does not act on 60, and the contact performance as well as the durability of the brush piece 60 can be improved. Further, in the brush member 58, the attachment holes 7 through which the welding protrusions 54 of the first lever body 42 can be inserted are formed at the root portions of the pair of brush pieces 60.
A pair of 0s are provided corresponding to the welding protrusions 54.

Next, the assembly structure of the open / close switch 10 will be described with reference to FIG. First, the brush member 58
In the first lever body 42, the welding projection 54 is inserted into the mounting hole 70 and mounted, and then the tip portion of the welding projection 54 protruding from the mounting hole 70 is melted to have its diameter increased and fixed. Next, a procedure for assembling each component will be described. First, the columnar body 28a protruding from the notch 26 of the cover 14
The coil spring 46 is externally fitted on. At this time, both ends of the coil spring 46 are attached so as to engage with the inner surface of the side wall 24 of the cover 14. Next, the second lever body 38 is rotatably attached to the cover 14 by inserting the columnar body 28 a into the second insertion hole 44. At this time, the operating point 40 is the cover 1
4 and the pair of abutting protrusions 48 are mounted so as to sandwich both ends of the coil spring 46.

Next, with the brush member 58 oriented in the opposite direction to the cover 14, the first lever body 42 is inserted into the first insertion hole 50 so that the support shaft 30 can pass therethrough, so that the cover 14 can rotate. Installing. At this time, the action point 40 of the second lever body 38 is engaged with the engagement groove 56. Next, the columnar bodies 28a and 28b are inserted into the through holes 34 so that the conductor patterns 20a and 20b face toward the cover 14 side, and the printed circuit board 16 is connected to the rim of the opening portion of the cover 14. The cover 14 is attached so as to abut. Finally,
The fixed bush 72 is pressed into the tips of the columnar bodies 28a and 28b protruding from the through holes 34 of the printed circuit board 16. As a result, the coil spring 46, the first lever body 42, the second lever body 38, and the printed circuit board 16 can be attached to the cover 14 in a non-removable manner.

The brush member 58 attached to the first lever body 42 is bent when the brush member 58 is attached to the cover 14 integrally with other members as described above.
0, that is, the contact protrusion 64 is the printed circuit board 16
4 is brought into contact with the surface of the cover 14 side, and as shown in FIG. 4, it is mounted in the compressed state shown by the solid line from the original state shown by the one-dot chain line against its own elastic force. As a result, the contact protrusion 64 at the tip of the brush piece 60 is not
The elastic force of 0 itself constantly contacts the printed circuit board 16 while being urged toward the printed circuit board 16.

Next, the operation of the open / close switch 10 will be described. Second lever body 38 protruding from the cover 14
When the tip end side of the columnar body 28a is rotated about the columnar body 28a as the second rotation axis as shown in FIG.
Rotate the same angle about 8a. As a result, the action point 4
The first lever body 42 in which 0 engages with the engaging groove 56 provided in itself also rotates about the support shaft 30 as the first rotation shaft, and the brush attached to the first lever body 42. The member 58 also rotates. Therefore, the contact protrusion 64 at the tip of the brush piece 60 formed on the brush member 58 also rotates about the support shaft 30 while sliding on the printed circuit board 16, and the ON position B (fixed contact 18a, fixed contact 18a in FIG. 3). 18b) and an off position C (a position separated from the fixed contacts 18a, 18b).

Further, in this embodiment, as shown in FIGS. 3 and 5, the fixed contact 18 provided on the brush piece 60 is fixed.
The positions of the contact protrusions 64 that come into contact with a and 18b are arranged at a distance from the action point 40 of the second lever body 38 with the support shaft 30 serving as the second rotation shaft as a reference. Therefore,
As shown in FIG. 6, the moving distance E of the contact protrusion 64 is longer than the moving distance D of the action point 40. by this,
Even when the rotation stroke (rotation angle) of the second lever body 38 is small, the moving distance E of the contact protrusion 64 can be long, so that reliable on / off operation of the switch can be performed.

Since the brush piece 60 extends in the circumferential direction around the support shaft 30, the fixed contact 18
By forming the shapes of a and 18b into a fan shape centering on the support shaft 30 as shown in FIG.
The contact protrusion 64 of the brush piece 60 can abut the edge portion of 18b at a substantially right angle, and the direction of the external force applied to the brush piece 60 coincides with the extending direction of the brush piece 60. Therefore, as compared with the conventional case where an external force is applied to the brush member 58 laterally with respect to the extending direction, it is possible to reduce the occurrence rate of defects such as bending of the brush piece 60. Further, as in the present embodiment, the fixed contact 18
The printed circuit board 16 on which a and 18b are formed is attached to the body portion 1.
By using it as a part of No. 2, it is possible to reduce the number of parts and reduce the manufacturing cost as well as the product cost.

Further, since the fixed contact is formed by the conductor pattern formed on the printed circuit board 16, the conductor patterns are formed as 20a, 20b, 2 as shown in FIG. 7, for example.
There is also an advantage that it is possible to easily change from an on / off circuit type opening / closing switch to an on / off / on circuit type opening / closing switch without changing the other components simply by changing to 0c. The positions F and G are turned on, and the position H intermediate between these two positions is turned off. Further, in the above embodiment, the one contact protrusion 64 is always positioned on the one fixed contact 18a, 18b, but similarly, although not shown, the fixed contact 18b.
By shortening the conductor pattern of, it is possible to easily form a double-cut switch circuit configuration. Further, since the printed circuit board 16 is used as a part of the body portion 12, it is easy to mount an electronic component on the printed circuit board 16 and output ON / OFF information at a predetermined voltage level. Can be changed to Specifically, if a TTL element is mounted as an electronic component, it is possible to output the on / off information of the contact at the TTL level.

Next, another embodiment will be described with reference to FIGS.
It will be described using 0. The same components as those in the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.
The open / close switch 74 of the present embodiment is characterized in that the first lever body 42 and the second lever body 38 forming the lever member 76 are integrally connected, and the second lever body 38 is the first lever body 38.
Of the lever body 42 and the second insertion hole 44 provided in the second lever body 38 extend along the same circumference with the first insertion hole 50 as the center. Front and back symmetry with respect to a point formed as an arcuate hole and a central plane I orthogonal to the central axis of the first insertion hole 50 (parallel to the support shaft 30 as the first rotation axis) of the lever member 76 The brush member 58 is formed in such a shape that it can be attached to the body portion 12 (specifically, the cover 14) as shown in FIG. The point is that it can be attached to both the front and back.

Specifically, the shape of the second insertion hole 44 is an arc shape extending only to one side (upper side in FIG. 8) with respect to the center line J of the second lever body 38 as shown in FIG. It is formed in the hole. Further, the lever member 76 has the center line J
As shown in FIG. 9, when it is rotated and turned upside down, as shown in FIG.
Is formed in a mirror image relationship (plane symmetry with reference to the central plane I). Therefore, even in the state of FIG.
In addition, the state of FIG.
The second insertion hole 44 as shown in FIG.
It can be attached to the cover 14 by inserting it into the cover b and inserting the first insertion hole 50 into the support shaft 30.

When the second lever body 38 in the state shown in FIG. 8 is operated, the lever member 36 is moved to the first insertion hole 50.
The support shaft 30 inserted in the center of the second insertion hole 44 is rotatable about a center line J in a lower region in a direction opposite to the extending direction of the second insertion hole 44. From the position of the solid line in FIG. 8 where the center line J of the second lever body 38 coincides with the straight line connecting the support shaft 30 and the columnar body 28a, the columnar body 28a has the other inner end surface in the longitudinal direction of the second insertion hole 44. (Upper end surface in FIG. 8) up to a position (a position indicated by an alternate long and short dash line in FIG. 8) in contact with. In the present embodiment, the columnar body 28a thus functions as a regulation shaft that regulates the rotation angle of the lever member 76. When the cover 14 is mounted in the state shown in FIG. 9, the rotation area of the second lever body 38 is
Contrary to the case of FIG. 8, it becomes an upper region with respect to the center line J as shown in FIG. 9, and its rotation angle is the same angle K as in FIG.

When the lever member 76 has the above-described shape, the same lever member 76 is inverted and attached to the cover 14, so that the lever member 76 can be swung right or left with respect to the cover 14. Since the fixed contacts 18a and 18b are formed on the printed circuit board 16 by a conductor pattern which can be easily changed and whose specifications can be easily changed as compared with a die change or the like, the conductor pattern can also be formed on the lever member 76. By changing the switch according to the mounting direction, you can easily swing the switch to the right or left.
4 can be manufactured and divided.

Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and the first lever body is not necessarily formed in a disc shape. Needless to say, many modifications can be made without departing from the spirit of the invention, such as a rectangular shape that matches the shape of the brush member.

[0031]

When the open / close switch according to the present invention is used,
Since the fixed contact is formed of a conductor pattern that can be easily changed, the circuit specifications of the switch can be easily changed. Further, since the formation accuracy of the conductor pattern by the etching process is generally good, it becomes possible to arrange the fixed contacts with high accuracy as compared with the case where the rod-shaped fixed contact is press-fitted as in the conventional example, and the thickness of the conductor pattern is also increased. Since it can be formed uniformly, the variation in height between the fixed contacts can be reduced, and the thickness of the fixed contacts can be reduced, so that the external force applied to the brush member when the brush member is connected with the fixed contact is reduced, and the brush member can be reduced. Is suppressed and the contact failure is eliminated. Further, the lever member is composed of a first lever body to which a brush member is attached and a second lever body, and a contact portion with a fixed contact of a brush piece of the brush member is based on the first rotating shaft. By arranging the second lever body at a distance from the point of action, even if the stroke of the second lever body is small, it is possible to increase the moving distance of the contact portion, and to reliably switch the switch. In addition to the fixed contacts formed of a conductor pattern, switches of various specifications can be realized. Further, the lever member is formed in a symmetrical shape on the front and back sides, and the brush member can be mounted on both the front and back sides of the first lever body, so that the lever member can be turned upside down with respect to the body portion. It can be mounted and fixed contacts are formed on the printed circuit board with a conductor pattern to easily change the position and shape. In addition, the left and right swing open / close switches can be used without making major changes such as changing the mold. Can be manufactured. In addition, if the pair of brush pieces is configured to extend in an arc shape along the same circumference centered on the second rotation axis,
The direction of the external force applied to the brush piece when riding over the fixed contact can be made to match the extension direction of the brush piece, and the bending of the brush piece can be reduced compared to the case where an external force is applied laterally to the extension direction. . Moreover, since the printed circuit board is used as a part of the wall surface of the body portion, the number of parts can be reduced, and the cost can be reduced, which is a remarkable effect.

[Brief description of drawings]

FIG. 1 is an exploded assembly view for explaining the configuration of an embodiment of an open / close switch according to the present invention.

FIG. 2 is a side sectional view showing the internal structure of the open / close switch of FIG.

FIG. 3 is a plan view showing a configuration of a brush member and a configuration of a printed circuit board shown in FIG.

FIG. 4 is a side view showing the structure of the brush member of FIG.

FIG. 5 is an explanatory view showing the operation of the open / close switch of FIG.

FIG. 6 is an explanatory diagram showing a point of action of a first lever body and a moving distance of a brush piece of a brush member.

FIG. 7 is a plan view showing another embodiment of a fixed contact formed on a printed board.

FIG. 8 is a plan view showing the structure of a lever member used in another embodiment of the open / close switch.

9 is a plan view of the lever member shown in FIG. 8 when it is inverted about the center line.

FIG. 10 is a side sectional view showing the internal structure when the lever member of FIG. 8 or 9 is attached to a cover to form an open / close switch.

FIG. 11 is a plan view showing a configuration of a conventional open / close switch.

FIG. 12 is an exploded side view of FIG.

[Explanation of symbols]

 10 Open / close switch 12 Body part 14 Cover 16 Printed circuit boards 18a, 18b Fixed contacts 20a, 20b Conductor pattern 36 Lever member 38 Second lever body 42 First lever body 58 Brush member

Claims (5)

[Claims] 1. A pair of fixed contacts mounted on a body portion so as to be spaced apart from each other, a lever member rotatably provided on the body portion about a first rotation axis, and a lever member on the lever member. An open / close switch having a brush member that is attached and is movable between an on position for electrically connecting the pair of fixed contacts and an off position for disconnecting the pair of fixed contacts according to rotation of a lever member, An open / close switch, wherein the pair of fixed contacts are formed in a conductor pattern on a printed circuit board and are attached to the body through the printed circuit board. 2. The lever member includes a first lever body rotatable about the first rotation shaft, and a second rotation shaft parallel to the first rotation shaft. It is rotatably provided on the body portion and has an action point for engaging with the first lever body, and the first lever body is centered on the first rotation axis through the action point. A rotatable second lever body, wherein the brush member is attached to the first lever body and has a pair of brush pieces that come into contact with each of the pair of fixed contacts. The opening / closing switch according to claim 1, wherein a contact portion of the piece with the fixed contact is arranged at a distance from the point of action of the second lever body with respect to the first rotation axis. . 3. The lever member includes a first lever body rotatable about the first rotation shaft, the lever member extending from the first lever body, and the first rotation shaft. Has a circular arc-shaped hole extending along the same circumference with the center as the center, and the regulation shaft provided in the body portion is inserted into the circular-arc hole to move the first lever body to the first rotation shaft. A second lever body that is rotatable in a predetermined angle range is provided at the center, and the lever member is formed in a front-back symmetrical shape with respect to a center plane orthogonal to the first rotation axis. The opening / closing switch according to claim 1, wherein the brush member is attachable to both the front and the back of the first lever body and has a pair of brush pieces that come into contact with each of the pair of fixed contacts. . 4. The open / close switch according to claim 2, wherein the pair of brush pieces extend in an arc shape along the same circumference centered on the first rotation axis. 5. The printed circuit board constitutes a part of a wall surface of the body portion.
Or the open / close switch described in 4.