JP2007305482A - Switching device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switching device capable of setting the shape of a control lever small, even with an enough stroke of the lever secured. <P>SOLUTION: The switching device is made provided with a fixed contact 5a with which a first arm part 3a of a torsion coil spring 3 is in constant contact, and a change-over contact 6a with which a second arm part gets in and out of contact. An overhung part 1e is formed overhanging inward from a side wall 1d of a case 1, an opening 1h allowing pushing-in of a control part 2a of the control lever 2 into the case 1 is formed on an extension line of the overhung part 1e of the case 1, an overhung part 2e capable of opposing the overhung part 1e of the case 1 is fitted to the control lever 2, and spring container parts 1e2, 2c in which a wound-around part 3a of the torsion coil spring 3 is contained are provided toward inside of the overhung part 1e of the case 1 and toward inside of the overhung part 2e of the control lever 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a switch device that has a movable contact made of a torsion coil spring and can be switched ON / OFF by bending and deforming the torsion coil spring as the operating lever rotates.

  There exists a thing shown by patent document 1 as this type of prior art. This prior art includes a case and a rotatable operation lever having an operation unit housed in the case and operated to be pressed. In addition, a winding part that forms a movable contact and is attached to a spring accommodating part formed on the operation lever, a first arm part that is drawn from one end of the winding part, and an operation that is drawn from the other end of the winding part A torsion coil spring having a second arm portion that bends and deforms as the lever rotates is provided.

  Moreover, the fixed contact with which the 1st arm part of a torsion coil spring contacts always, and the switching contact which can contact / separate the 2nd arm part of a torsion coil spring are provided. The switching contact has a lower contact portion and an upper contact portion capable of holding and holding the second arm portion of the torsion coil spring, and the second arm portion is deformed by the bending deformation of the second arm portion as the operation lever rotates. Is inserted between the lower contact portion and the upper contact portion. Each of the lower contact portion and the upper contact portion is formed in a shape that is cantilevered.

  The winding portion of the torsion coil spring described above and the spring storage portion of the operation lever in which the winding portion is stored are arranged at a substantially central position near the end portion of the case on the side facing the switching contact of the case. .

In the prior art configured as above, the first arm portion of the torsion coil spring forming the movable contact contacts the fixed contact in the initial state where no pressing force is applied to the operation portion of the operation lever. Since the second arm portion is kept away from the switching contact, the fixed contact and the switching contact are cut off and turned off. When a pressing force is applied to the operation portion of the operation lever from this state, the torsion coil spring is bent and deformed, and the second arm portion is inserted between the lower contact portion and the upper contact portion of the switching contact, and the second arm portion is The state is sandwiched between the lower contact portion and the upper contact portion. That is, the switching contact and the fixed contact are conducted through the torsion coil spring and turned ON. When the operation lever is rotated to the full stroke, the operation portion of the operation lever hits the end of the outer wall of the case, and the rotation stops. That is, in this prior art, the operation part of the operation lever is configured not to be pushed into the case.
JP 2003-331690 A

  In the above-described prior art, since the operating lever has a spring accommodating portion that accommodates the winding portion of the torsion coil spring, the thickness of the wall portion that forms the spring accommodating portion cannot be reduced. As a result, the shape of the spring storage portion has increased, and the shape of the operation lever has tended to increase accordingly. As a result, it has been difficult to reduce the size of the entire apparatus.

  In addition, when the operating lever is rotated to the full stroke, the operating portion of the operating lever stops against the end of the outer wall of the case, so that the operating lever for bending and deforming the torsion coil spring The stroke was limited. Therefore, in order to ensure a desired stroke, the shape of the operation lever must be set relatively large. This also makes it difficult to achieve downsizing of the entire apparatus.

  The present invention has been made from the actual state of the above-described prior art, and an object thereof is to provide a switch device capable of setting the shape of the operation lever small while ensuring a sufficient stroke of the operation lever. It is in.

  In order to achieve the above object, the present invention provides a case, a rotatable operation lever having an operation part that is housed in the case and operated to be pressed, a movable contact, a winding part, and the winding part. A torsion coil spring having a first arm portion that is pulled out from one end of the portion, and a second arm portion that is pulled out from the other end of the winding portion and bends and deforms as the operation lever rotates. A fixed contact that always contacts the first arm portion of the spring; and a switching contact that contacts and separates the second arm portion of the torsion coil spring, the corner of the case from the side wall of the case to the case An overhang is formed to extend toward the inside of the case, and an opening is formed on the extension line of the overhang of the case to allow the operation lever to be pushed into the case. lever A projecting portion that can be opposed to the projecting portion of the case, and a spring housing portion that houses the winding portion of the torsion coil spring inside the projecting portion of the case and the inner side of the operation lever. It is characterized by that.

  In the present invention configured as described above, a spring accommodating portion in which the winding portion of the torsion coil spring is accommodated is formed by the protruding portion of the case provided at the corner portion of the case and the protruding portion of the operation lever. The corner of the case, which was a dead space, can be used effectively for installing the winding part of the torsion coil spring, and the operation lever part for storing the winding part of the torsion coil spring is set to a small shape it can. Thereby, an operation lever can be made into a small shape. Even if the operating lever is made small in this way, the operating portion of the operating lever can be pushed into the case from the opening of the case as the operating lever rotates, so that a desired stroke of the operating lever is ensured. can do. That is, according to the present invention, the shape of the operation lever can be set small while ensuring a sufficient stroke of the operation lever. Accordingly, the shape of the case can be reduced.

  Moreover, the present invention is characterized in that, in the above-mentioned invention, the operation lever has a shaft support portion to which the winding portion of the torsion coil spring is mounted. The present invention configured as described above can realize stable holding of the torsion coil spring by attaching the winding portion of the torsion coil spring to the shaft support portion of the operation lever.

  Moreover, the present invention is characterized in that, in the above invention, the fixed contact is held in the case. The present invention configured as described above can realize stable holding of the fixed contact.

  According to the present invention, in the above invention, a first stopper surface is provided on an end surface of the projecting portion of the case, and the end surface of the projecting portion of the operation lever is engaged with the first stopper surface when the operation lever is released. A first stopper portion to be stopped is provided. In the present invention configured as described above, when the operation lever is pressed and released, the first stopper portion of the projecting portion of the operation lever is engaged with the first stopper surface of the projecting portion of the case, so that the operation lever can be rotated. Stop. As a result, the operation lever can be stably held at the initial position.

  According to the present invention, in the above invention, when the first stopper portion is locked to the first stopper surface, the outer surface of the projecting portion of the case and the outer surface of the operation lever are flush with each other. As described above, the shape of the projecting portion of the case and the shape of the projecting portion of the operation lever are respectively set. According to the present invention configured as described above, when the operating lever is held at the initial position, no step is generated between the protruding portion of the operating lever and the protruding portion of the case, and the aesthetic appearance can be maintained.

  Further, according to the present invention, in the above invention, a second stopper surface is provided on the side wall of the case opposite to the side wall on which the protruding portion of the case is provided, and the second stopper surface is provided on the operation portion of the operation lever. A second stopper portion that is locked to the second stopper portion is provided. In the present invention configured as described above, when the operation portion of the operation lever is pressed, the operation portion is placed in the case until the second stopper portion of the operation portion of the operation lever comes into contact with the second stopper surface of the side wall of the case. Since the operating lever can be rotated as if it is pushed in, a large stroke of this operating lever can be secured. In addition, it is possible to secure a stable stroke of the operation lever during the pressing operation.

  Further, the present invention is characterized in that, in the above-mentioned invention, a third stopper surface is provided inside the case, and a third stopper portion that is locked to the third stopper surface is provided on the operation lever. According to the present invention configured as described above, when the operation portion of the operation lever is pressed, the operation lever is also rotated by the third stopper portion of the operation lever being locked to the third stopper surface of the case. Can be stopped. That is, the operation lever can be stopped by both the locking of the second stopper portion on the second stopper surface and the locking of the third stopper portion on the third stopper surface, and the operation lever of the operation lever can be stopped. It is possible to realize a stable stop function of the operating lever when pushed into the case and a highly accurate stroke of the operating lever.

  According to the present invention, while ensuring a sufficient stroke of the operation lever, the shape of the operation lever can be set small, and the case can be reduced accordingly. As a result, it is possible to reduce the size of the entire apparatus, which was difficult in the past.

  Hereinafter, the best mode for carrying out a switch device according to the present invention will be described with reference to the drawings.

[Configuration of this embodiment]
FIG. 1 is an external view of an embodiment of a switch device according to the present invention, FIG. 2 is an exploded perspective view of the embodiment, and FIG. 3 is a perspective view showing a state in which the cover is removed in the embodiment. 4 is a plan view of a case provided in the present embodiment, FIG. 5 is a rear view of an operation lever provided in the present embodiment, and FIG. 6 is a perspective view showing a fixed contact and a switching contact provided in the present embodiment. .

  As shown in FIGS. 1 to 3, the switch device according to the present embodiment includes a case 1 made of an insulating material such as a resin material, a fixed contact 5 a that is insert-molded in the case 1 and held in the case 1, and And a switching contact 6a. A torsion coil spring 3 that forms a movable contact is disposed in the case 1. In addition, an operation lever 2 is provided that has an operation portion 2a that is operated to be pressed, and that can be rotated so as to bend and deform the torsion coil spring 3. Further, a cover 4 made of a metal plate covering the upper surface of the case 1 is provided.

  Locking portions 1 a and 1 b are formed on the side wall of the case 1. The cover 4 is engaged with a locking claw 4 a that engages with the locking portion 1 a of the case 1 and a locking portion 1 b of the case 1. The side plate 4b is formed. The cover 4 is fixed to the case 1 through the locking portions 1a and 1b, the locking claws 4a, and the side plates 4b.

  As shown in FIG. 4, the corner portion of the case 1, that is, the corner portion connected to the side wall 1 d of the case 1 where the fixed contact 5 a is disposed, is formed to project from the side wall 1 d toward the inside of the case 1. An overhang portion 1e is provided. An end surface of the projecting portion 1e forms a first stopper surface 1e1. A shaft 1c is provided on the inner side of the overhanging portion 1e, and a spring housing portion 1e2 in which a winding portion 3a of a torsion coil spring 3 described later is housed in a region between the shaft 1c and the overhanging portion 1e. It is formed.

  An opening 1 h that allows the operation portion 2 a of the operation lever 2 to be pushed into the case 1 is formed on an extension line of the projecting portion 1 e of the case 1. For example, the shape and size of the operation lever 2 and the size of the opening 1h of the case 1 are set so that almost the entire operation portion 2a of the operation lever 2 can be accommodated in the case 1 from the opening 1h.

  Further, a second stopper surface 1f is formed on the side wall 1d1 of the case 1 on the side facing the side wall 1d where the protruding portion 1e of the case 1 is provided. Further, a third stopper surface 1g is also formed inside the case 1.

  As shown in FIGS. 2 and 3, the operation lever 2 described above includes a cylindrical shaft support portion 2 b inserted into the shaft 1 c of the case 1 in addition to the operation portion 2 a described above. In addition, an overhang portion 2e that can face the above-described overhang portion 1e of the case 1 is provided, and an end surface of the overhang portion 2e is engaged with a first stopper surface 1e1 that forms an end surface of the overhang portion 1e of the case 1. The first stopper portion 2e1.

  A spring accommodating portion 2c that accommodates a winding portion 3a of a torsion coil spring 3 to be described later is formed in a region between the projecting portion 2e of the operation lever 2 and the shaft support portion 2b. That is, spring accommodating portions 1e2 and 2c are formed on the inner side of the protruding portion 1e of the case 1 and the inner side of the protruding portion 2e of the operation lever 2, respectively. These spring accommodating portions 1e2 and 2c are in communication with each other and serve as a spring accommodating portion that accommodates a winding portion 3a of a torsion coil spring 3 described later.

  Further, the operating lever 2 is provided with a locking portion 2d that is connected to the spring housing portion 2c and that holds a second arm portion 3c of a torsion coil spring 3 described later.

  As shown in FIGS. 2 and 3, the end surface of the operation portion 2a of the operation lever 2 located on the side wall 1d1 side of the case 1 is engaged with the second stopper surface 1f of the case 1 described above. Part 2a1. Further, as shown in FIG. 5 which is a rear view of the operation lever 2, a third stopper portion 2a2 to be engaged with the third stopper surface 1g of the case 1 is formed on the rear surface of the operation lever 2. is there.

  As shown in FIG. 3, when the first stopper surface 2e1 of the protruding portion 2e of the operating lever 2 is locked to the first stopper surface 1e1 of the protruding portion 1e of the case 1, the outer surface of the protruding portion 1e of the case 1 The shape of the projecting portion 1e of the case 1 and the shape of the projecting portion 2e of the operation lever 2 are set so that the outer surface of the projecting portion 2e of the operation lever 2 is flush with each other.

  2 and 3, the torsion coil spring 3 forming the movable contact described above is mounted on the shaft support portion 2b of the operation lever 2 and is housed in the inside of the overhanging portion 1e of the case 1. The winding portion 3a housed in the spring housing portion 2c formed inside the portion 1e2 and the overhanging portion 2e of the operation lever 2, and is drawn from one end of the winding portion 3a, and is always connected to the fixed contact 5a. A first arm portion 3b that comes into contact with the second arm portion 3c that is drawn out from the other end of the winding portion 3a and that contacts and separates from the switching contact 6a is provided. As described above, the second arm portion 3c is locked to the locking portion 2d of the operation lever 2.

  In the present embodiment, the second arm portion 3c of the torsion coil spring 3 is configured to contact the switching contact 6a in the initial state shown in FIG. 3 where no pressing force is applied to the operation portion 2a of the operation lever 2. It is.

  As shown in FIG. 6, the fixed contact 5a and the switching contact 6a which are insert-molded in the case 1 are formed by processing bases 5a and 6a made of metal, for example, copper titanium.

  In other words, the fixed contact 5a is formed at a portion formed by rising from the base 5 by, for example, a protrusion process. The base 5 is also formed with external terminals 5b soldered to a substrate (not shown) to which the switch device according to this embodiment is attached. Therefore, the fixed contact 5a and the external terminal 5b are kept in a conductive state.

  The switching contact 6a includes, for example, a protrusion 6a1 that forms a lower contact portion by cutting and bending the base portion 6, and an upper contact portion 6a2 that is raised from the base portion 6 and further bent. The protrusion 6a1 has a double-sided support shape and forms a rigid body. The upper contact portion 6a2 located on the protrusion 6a1 has a cantilever support shape, and an arcuate guide portion 6a21 that guides insertion of the second arm portion 3c of the torsion coil spring 3 is formed at the end portion. The base 6 is also formed with external terminals 6b soldered to a substrate (not shown) to which the switch device is attached. Therefore, the switching contact 6a and the external terminal 6b are kept in a conductive state.

  In manufacturing the switching contact 6a described above, after the protrusion 6a1 is cut and bent on the base 6, the protrusion 6a1 made of this rigid body is used as a reference for the boundary height position with the upper contact 6a2 and cantilever having elasticity. The support-shaped upper contact portion 6a2 is formed so as to abut on the protrusion 6a1.

[Operation of this embodiment]
7 and 8 are views showing the operation of the present embodiment, FIG. 7 is a perspective view showing a state in the middle of pushing operation of the operation lever, and FIG. 8 is a perspective view showing a state where the operation lever is pushed to full stalk. is there. 9 to 11 are diagrams showing the operation of this embodiment. FIG. 9 is a cross-sectional view corresponding to FIG. 3 showing a state in which the operation lever is held at the initial position. FIG. FIG. 11 is a perspective view corresponding to FIG. 7 showing the state, and FIG. 11 is a perspective view corresponding to FIG. 8 showing the state where the operating lever is pushed to the full stroke.

  3 and 9 described above show an initial state in which no pressing force is applied to the operation portion 2a of the operation lever 2. At this time, the first stopper portion 2e1 of the overhanging portion 2e of the operation lever 2 is the case 1 Is locked to the first stopper surface 1e1 of the overhang portion 1e. Further, the first arm portion 3b of the torsion coil spring 3 contacts the fixed contact 5a, and the second arm portion 3c is inserted between the protrusion 6a1 and the upper contact portion 6a2, and the protrusion 6a1 and the upper The contact portion 6a2 holds the pressure. That is, the second arm 3c is kept in contact with the switching contact 6a. Therefore, in this initial state, the fixed contact 5a and the switching contact 6a are conducted through the torsion coil spring 3 and are ON.

  From this state, when a pressing force is applied to the operating portion 2a of the operating lever 2, the operating lever 2 rotates, and the operating portion 2a of the operating lever 2 opens the case 1 as shown in FIGS. The first stopper portion 2e1 of the protruding portion 2e of the operation lever 2 is separated from the first stopper surface 1e1 of the protruding portion 1e of the case 1 by being pushed into the case 1 from the portion 1h. At the same time, the second arm portion 3c of the torsion coil spring 3 is bent according to the rotation of the operation lever 2, and tends to be detached from between the protruding portion 6a1 and the upper contact portion 6a2 of the switching contact 6a.

  When the operation lever 2 is rotated to the full stroke, the second stopper portion 2a1 formed on the operation portion 2a of the operation lever 2 is formed on the side wall 1d1 of the case 1 as shown in FIGS. At the same time, the third stopper portion 2 a 2 formed on the back surface of the operation lever 2 is locked against the third stopper surface 1 g formed inside the case 1. Thereby, the rotation of the operation lever 2 is stopped. At this time, as shown in FIG. 8, almost the entire operation portion 2 a of the operation lever 2 is accommodated in the case 1. Further, the second arm portion 3c of the torsion coil spring 3 is completely separated from the switching contact 6a, whereby the fixed contact 5a and the switching contact 6a are cut off and turned off.

  In addition, when the pressing force applied to the operation portion 2a of the operation lever 2 is weakened from the state in which the operation lever 2 is maintained in this way, the operation lever 2 is moved in the direction opposite to the above by the restoring force of the torsion coil spring 2. In other words, the operation portion 2 a rotates in a direction protruding from the opening 1 h of the case 1. Along with this, the second arm portion 3c of the torsion coil spring 3 is guided by the guide portion 6a21 of the upper contact portion 6a2, and is inserted between the protruding portion 6a1 and the upper contact portion 6a2. Further, the first stopper portion 2e1 of the protruding portion 2e of the operation lever 2 is engaged with the first stopper surface 1e1 of the protruding portion 1e of the case 1 and is returned to the initial state. In this initial state, as described above, the fixed contact 5a and the switching contact 6a are brought into conduction via the torsion coil spring 3 and turned ON.

[Effect of this embodiment]
In this embodiment configured as described above, the inner spring accommodating portion 1e2 of the protruding portion 1e of the case 1 provided at the corner portion of the case 1 and the inner spring accommodating portion 2c of the protruding portion 2e of the operating lever 2 are provided. Since the spring housing portion in which the winding portion 3a of the torsion coil spring 3 is housed is formed, the corner portion of the case 1 which was a dead space is installed in order to install the winding portion 3a of the torsion coil spring 3. Can be used effectively. Moreover, the part of the operation lever 2 for accommodating the winding part 3a of the torsion coil spring 3 can be set to a small shape. Thereby, the operation lever 2 can be made into a small shape.

  Even if the operation lever 2 is made small in this way, the operation portion 2a of the operation lever 2 can be pushed into the case 1 from the opening 1h of the case 1 as the operation lever 2 rotates. A desired stroke of the lever 2 can be ensured.

  That is, according to the present embodiment, it is possible to set the shape of the operation lever 2 small while securing a sufficient stroke of the operation lever 2. As a result, the case 1 can be made smaller, and the overall size of the switch device according to the present embodiment can be reduced.

  Further, by attaching the winding portion 3a of the torsion coil spring 3 to the shaft support portion 2b of the operating lever 2, stable holding of the torsion coil spring 3 can be realized, and a highly reliable device can be obtained. .

  Further, since the fixed contact 5a is held in the case 1 by insert molding, stable holding of the fixed contact 5a can be realized, and this can also provide a highly reliable device.

  Further, when the operation lever 2 is pressed and released, the first stopper portion 2e1 of the protruding portion 2e of the operation lever 2 is brought into contact with the first stopper surface 1e1 of the protruding portion 1e of the case 1 to be locked. Stops rotating. As a result, the operation lever 2 can be stably held at the initial position, and this can also provide a highly reliable device.

  Further, when the operation lever 2 is held at the initial position, the outer surface of the overhanging portion 1e of the case 1 and the outer surface of the overhanging portion 2e of the operation lever 2 are flush with each other, and these overhanging portion 1e and the overhanging portion 2e. No difference in level can be created between them, and the aesthetics can be maintained. Thereby, excellent design properties can be ensured.

  Further, when the operation portion 2a of the operation lever 2 is pressed, the operation portion 2a is kept until the second stopper portion 2a1 of the operation portion 2a of the operation lever 2 contacts the second stopper surface 1f of the side wall 1d1 of the case 1. Can be pushed into the case 1 and the operation lever 2 can be rotated, so that a large stroke of the operation lever 2 can be ensured and a stable stroke of the operation lever 2 during the pressing operation can be realized. Also by this, it can be set as a reliable apparatus.

  Further, when the operation portion 2 a of the operation lever 2 is pressed, the operation lever 2 is also rotated by the third stopper portion 2 a 2 of the operation lever 2 being locked to the third stopper surface 1 g of the case 1. Can be stopped. That is, the operation lever 2 can be stopped by both the locking of the second stopper portion 2a1 on the second stopper surface 1f and the locking of the third stopper portion 2a2 on the third stopper surface 1g. Thus, it is possible to realize a stable stop function of the operation lever 2 when the operation portion 2a is pushed into the case 1 and to secure a highly accurate stroke of the operation lever 2. This also makes it possible to obtain a highly reliable device.

  Further, in the present embodiment, the lower contact portion of the switching contact 6a is composed of the projecting portion 6a1 having a both-end supporting shape, and thus the projecting portion 6a1 can be formed in a rigid body. Thus, when the switching contact 6a is manufactured, after the projection 6a1 is formed, the projection 6a1 made of a rigid body is used as a reference for the boundary height position with the upper contact 6a2. What is necessary is just to form so that 6a2 may contact | abut to projection part 6a1. At this time, since the projection 6a1 is made of a rigid body, the projection 6a1 does not move, and accordingly, variation in the boundary height position between the projection 6a1 and the upper contact 6a2 forming the lower contact can be suppressed. Therefore, the shift of the contact timing between the second arm portion 3c of the torsion coil spring 3 forming the movable contact and the switching contact 6a can be reduced, and a highly accurate ON / OFF switching performance can be ensured.

  In addition, since the lower contact portion of the switching contact 6a is composed of a protrusion 6a1 that forms a rigid body having a both-end support shape, the protrusion 6a1 and the upper contact can be formed even if the shape dimensions of the protrusion 6a1 and the upper contact 6a2 are set small. Variations in the height of the boundary with the portion 6a2 can be suppressed. Therefore, the shape of the switching contact 6a can be made small, which also contributes to the realization of downsizing of the entire apparatus.

  Further, the protrusion 6a1 can be easily formed by cutting and bending the base 6, thereby reducing the manufacturing cost.

  In addition, the fixed contact 5a can be easily formed by subjecting the base portion 5 to a protruding process, which can also reduce the manufacturing cost.

  Further, the second arm 3c of the torsion coil spring 3 can be smoothly inserted between the protrusion 6a1 and the upper contact 6a2 via the guide 6a21 of the upper contact 6a2, and the stable switching contact 6a The contact / separation operation of the second arm portion 3c of the torsion coil spring 3 can be realized.

  Even when reflow soldering is applied to each of the external terminals 5b and 6b, the fixed contact 5a and the switching contact 6a are made of copper titanium, so that the fixed contact 5a and the switching contact 6a are sag by heat during reflow soldering. Can be prevented. Therefore, the external terminals 5b and 6b can be efficiently attached to a predetermined substrate (not shown) by reflow soldering, and the efficiency of work when attaching this embodiment to the substrate can be improved.

[Other Embodiments]
FIG. 12 is a perspective view showing a fixed contact and a switching contact forming the main part of another embodiment of the present invention.

  In another embodiment shown in FIG. 12, the fixed contact 5 c is formed by cutting and bending at a portion formed upright from the base 5. About another structure, it is equivalent to embodiment shown in FIGS. 1-11 mentioned above, for example. Even in such a configuration, the fixed contact 5 c can be easily formed by cutting and bending the base portion 5. This can reduce production costs.

  In each of the above-described embodiments, the protrusion 6a1 that is the lower contact portion included in the switching contact 6a is formed by cutting and bending. However, in the present invention, the protrusion 6a1 is thus formed by cutting and bending. It is not limited to forming. The base 6 may be formed by being extruded. Also in this configuration, the protruding portion 6a1 can be easily formed, and this can also reduce the manufacturing cost.

1 is an external view of an embodiment of a switch device according to the present invention. It is a disassembled perspective view of this embodiment. In this embodiment, it is a perspective view which shows the state except the cover. It is a top view of the case with which this embodiment is equipped. It is a reverse view of the operation lever with which this embodiment is equipped. It is a perspective view which shows the stationary contact with which this embodiment is provided, and a switching contact. It is a figure which shows operation | movement of this embodiment, and is a perspective view which shows the state in the middle of pushing operation | movement of an operation lever especially. It is a figure which shows operation | movement of this embodiment, and is a perspective view which shows the state by which the operation lever was pushed in especially to full Stoke. It is a figure which shows the operation | movement of this embodiment, and is sectional drawing corresponding to FIG. 3 which shows the state by which the operation lever was hold | maintained in the initial position especially. It is a figure which shows operation | movement of this embodiment, and is a perspective view corresponding to FIG. 7 which shows the state in the middle of pushing operation | movement of an operation lever especially. It is a figure which shows operation | movement of this embodiment, and is a perspective view corresponding to FIG. 8 which shows the state by which the operation lever was pushed in to full stroke especially. It is a perspective view which shows the stationary contact which forms the principal part of other embodiment of this invention, and a switching contact.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Case 1c Shaft 1d Side wall 1d1 Side wall 1e Overhang | projection part 1e1 1st stopper surface 1e2 Spring accommodating part 1f 2nd stopper surface 1g 3rd stopper surface 1h Opening part 2 Operation lever 2a Operation part 2a1 2nd stopper part 2a2 3rd stopper part 2b Shaft support portion 2c Spring storage portion 2d Locking portion 2e Overhang portion 2e1 First stopper portion 3 Torsion coil spring (movable contact)
3a Winding portion 3b First arm portion 3c Second arm portion 5a Fixed contact 5b External terminal 5c Fixed contact 6a Switching contact 6a1 Projection (lower contact)
6a2 Upper contact portion 6a21 Guide portion 6b External terminal

Claims (7)

A case, and a rotatable operation lever having an operation part housed in the case and operated to be pressed;
A movable contact is formed, and a winding portion, a first arm portion that is pulled out from one end of the winding portion, and a second arm that is pulled out from the other end of the winding portion and bends and deforms as the operation lever rotates. A torsion coil spring having two arms,
A fixed contact that always contacts the first arm of the torsion coil spring; and a switching contact that contacts and separates the second arm of the torsion coil spring;
In the corner portion of the case, provided with a protruding portion formed to protrude from the side wall of the case toward the inside of the case,
On the extension line of the projecting portion of the case, an opening that allows the operation portion of the operation lever to be pushed into the case is formed,
The operating lever is provided with an overhanging portion that can face the overhanging portion of the case,
A switch device characterized in that a spring accommodating portion for accommodating the winding portion of the torsion coil spring is provided on the inner side of the projecting portion of the case and the inner side of the operation lever. In the invention of claim 1,
The switch device, wherein the operating lever has a shaft support portion to which the winding portion of the torsion coil spring is mounted. In the invention of claim 1,
A switch device characterized in that the fixed contact is held in the case. In the invention of claim 1,
A first stopper surface is provided on the end surface of the projecting portion of the case, and a first stopper portion that is engaged with the first stopper surface when the operation lever is released is provided on the end surface of the operation lever. A switch device characterized by that. In the invention of claim 4,
The shape of the protruding portion of the case is such that the outer surface of the protruding portion of the case and the outer surface of the operation lever are flush with each other when the first stopper portion is locked to the first stopper surface. And a switch device in which the shape of the protruding portion of the operation lever is set. In the invention according to claim 4 or 5,
A second stopper surface is provided on the side wall of the case opposite to the side wall on which the projecting portion of the case is provided, and a second stopper portion that is locked to the second stopper surface on the operation portion of the operation lever is provided. A switch device provided. In the invention of claim 6 above,
A switch device characterized in that a third stopper surface is provided inside the case, and a third stopper portion is provided on the operation lever so as to be locked to the third stopper surface.

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