Patent Publication Number: US-2017372851-A1

Title: Switch

Description:
TECHNICAL FIELD 
     The present invention relates to a switch. 
     BACKGROUND ART 
     Conventionally, for example, a switch disclosed in Patent Document 1 is known. This switch is provided with an operation member; a fixed contact provided with a common contact, a first switching contact and a second switching contact; a movable contact to be in contact with the common contact and provided with a contact part to be in contact with either the first switching contact or the second switching contact; and a snap action mechanism for moving the movable contact to be in contact with the first switching contact or the second switching contact by means of pressing operation of the operation member. 
     PRIOR ART DOCUMENT 
     Patent Document 
     Patent Document 1: Japanese Unexamined Patent Publication No. 2010-73662 
     SUMMARY OF THE INVENTION 
     Problem to be Solved by the Invention 
     In the conventional switch described above, the movable contact is configured to slide and make contact with the switching contact, and thereby a switch having high contact reliability is provided. The present inventors found that a switch having higher contact reliability compared to the conventional switch described above can be obtained. 
     Accordingly, an object of the present invention is to provide a switch having high contact reliability. 
     Means for Solving the Problem 
     A switch according to the present invention is derived to solve the problem described above and is provided with a base, at least one switch part arranged on the base and having a common fixed contact and at least one open and close fixed contact arranged with a predetermined interval between the common fixed contact and the at least one open and close fixed contact, a slide body having a common movable contact configured to be in slidably contact with the common fixed contact and an open and close movable contact electrically connected to the common movable contact and configured to be in slidably contact with or separate from the open and close fixed contact, the slide body being rotatably supported by the base, a cover mounted to the base to cover the switch part and the slide body, an operation body movably supported by the base or the cover, and an elastic body configured to bias the slide body and the operation body to be close to each other. The slide body is supported to rotate by a snap action due to elastic force of the elastic body when the operation body is moved to a predetermined position. The open and close movable contact slides in association with rotation of the slide body so as to be in contact with or separate from the open and close fixed contact. The common movable contact slides in association with the rotation of the slide body while in contact with the common fixed contact. 
     Effects of the Invention 
     According to the switch of the present invention, the slide body rotates by the snap action due to the elastic force of the elastic body when the operation body is moved to the predetermined position, and the open and close movable contact slides in association with the rotation of the slide body such that the open and close movable contact and the open and close fixed contact are in contact with each other or separate from each other, and the common movable contact slides in association with the rotation of the slide body while in contact with the common fixed contact. Thus, a foreign substance or the like formed on each surface of the first movable contact, the second movable contact and the fixed contacts is wiped, and therefore a wiping effect can be obtained. As a result, contact reliability can be improved. 
     Further, the second movable contact slides while in contact with the common fixed contact by the rotation of the slide body. Thus, all switch parts can be switched at substantially the same time in a case in which a plurality of the switch parts is arranged. 
     As one embodiment of the present invention, the operation body may be provided with a rotation part rotatably supported by the base or the cover and an operation part joined to the rotation part, and the slide body and the rotation part may be arranged to have different pivots, respectively. 
     According to this embodiment, the slide body and the rotation part have the different pivots respectively, and thereby pressing force to the operation body necessary to rotate the slide body can be reduced compared to a switch in which the slide body and the rotation part have the same pivot. That is, large driving force to the slide body can be obtained by small pressing force to the operation body. As a result, the switch part can be switched easily. 
     As one embodiment of the present invention, the slide body may be provided with a movable touch piece on which a pair of the open and close movable contacts and a pair of the common contacts are arranged, and each of the pair of the open and close movable contacts and the pair of the common movable contacts is mounted in a rotation axis direction of the slide body and mounted in a movable manner such that the pair of the open and close movable contacts and the pair of the common movable contacts elastically clamp the open and close fixed contact and the common fixed contact respectively. 
     According to this embodiment, even if an error is generated between a position in which the switch part is arranged and a position in which the switch part is designed, the movable touch piece is moved in accordance with the position of the switch part when the slide body is mounted to the base, and thereby a position of the movable touch piece is automatically adjusted. Thus, since it is not necessary to control positional accuracy of the switch part severely, a manufacturing cost can be reduced. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view illustrating one embodiment of a switch according to the present invention. 
         FIG. 2  is a perspective view illustrating a state in which a cover of the switch shown in  FIG. 1  is removed. 
         FIG. 3  is an exploded perspective view of the switch shown in  FIG. 1 . 
         FIG. 4  is an exploded perspective view of the switch shown in  FIG. 1  seen from a different direction against  FIG. 3 . 
         FIG. 5  is a view for describing an assembling method of the switch shown in  FIG. 1 . 
         FIG. 6  is a view for describing the assembling method of the switch shown in  FIG. 1  following  FIG. 5 . 
         FIG. 7  is a view for describing the assembling method of the switch shown in  FIG. 1  following  FIG. 6 . 
         FIG. 8  is a view for describing the assembling method of the switch shown in  FIG. 1  following  FIG. 7 . 
         FIG. 9  is a view for describing operation of the switch shown in  FIG. 1 . 
         FIG. 10  is a view for describing the operation of the switch shown in  FIG. 1  following  FIG. 9 . 
         FIG. 11  is a view for describing the operation of the switch shown in  FIG. 1  following  FIG. 10 . 
         FIG. 12  is a view for describing the operation of the switch shown in  FIG. 1  following  FIG. 11 . 
         FIG. 13  is a view for describing the operation of the switch shown in  FIG. 1  following  FIG. 12 . 
         FIG. 14  is a view for describing the operation of the switch shown in  FIG. 1  following  FIG. 13 . 
         FIG. 15  is a view for describing another embodiment of the switch shown in  FIG. 1 . 
         FIG. 16  is another view for describing another embodiment of the switch shown in  FIG. 1 . 
         FIG. 17  is another view for describing another embodiment of the switch shown in  FIG. 1 . 
     
    
    
     MODE FOR CARRYING OUT THE INVENTION 
     Hereinafter, embodiments of a switch according to the present invention is described with reference to attached drawings. Here, in the description below, terminologies which indicate directions such as “up”, “down”, “left”, “right” and other terminologies including thereof are used for describing a configuration illustrated in the drawings. These terminologies are used for facilitating understanding of the embodiments through the drawings. Accordingly, these terminologies are not always matched with directions when each embodiment of the present invention is actually used, and the scope of the invention described in Claims should not be limited by these terminologies. 
     As shown in  FIG. 1  and  FIG. 2 , a switch  100  according to one embodiment of the present invention is provided with a base  10 , a slide body  50  and an operation lever  70  as one example of an operation body arranged on the base  10 , and a cover  80  arranged on the base  10  to cover the slide body  50 . 
     As shown in  FIG. 3 , two sets of a first fixed contact terminal  20 , a second fixed contact terminal  30  and a common fixed contact terminal  40  are arranged on the base  10 . Two movable touch pieces  60  are mounted to the slide body  50 . Further, a reverse spring  90  as one example of an elastic body joined to the slide body  50  and the operation lever  70 , and two return springs  91  joined to the base  10  and the operation lever  70  are further arranged on the switch  100 . 
     As shown in  FIG. 3  to  FIG. 5 , the base  10  is formed in a rectangular shape, which is defined by a pair of long sides and a pair of short sides, seen from an upper side. A pair of support parts  11  for supporting the slide body  50  and the operation lever  70  is arranged on the base  10 . 
     As shown in  FIG. 3  and  FIG. 5 , the pair of the support parts  11  is arranged at an edge part of one short side of an upper surface of the base  10  so as to be projected from the upper surface of the base  10 . The support parts  11  are arranged along the short side of the base  10  so as to face each other. 
     The support part  11  is provided with a vertical part extended upwardly from the upper surface of the base  10 , and a horizontal part extended in a longitudinal direction of the base  10  from an upper end of the vertical part along the upper surface of the base  10 . As shown in  FIG. 4 , a notch  12  is arranged at a joining part between a lower surface  11   a  of the horizontal part and a side surface  11   b  of the vertical part continued to the lower surface  11   a.  The notch  12  is arranged on an outward surface which does not face another support part  11 . The notch  12  is provided with a rotation receiving part  13  which rotatably supports the slide body  50 , and a slide body mount hole  14  for mounting the slide body  50 . The lower surface  11   a  of the horizontal part of the support part  11  and the side surface  11   b  of the vertical part continued to the lower surface  11   a  are inclined and formed to define a rotation range of the slide body  50 . 
     Further, a base projection  15  projected from the outward surface of the support part  11  is arranged at an upper side of the notch  12  of the support part  11 . A spring mount hole  16  for mounting one end of the return spring  91  is arranged at a base part (lower end) of the vertical part. 
     A recess  10   a  corresponding to a shape of the cover  80  is arranged at an outer peripheral part of the upper surface of the base  10 . A recess  17  formed in a rectangular shape seen from an upper side is arranged at a center potion of the upper surface of the base  10 . Further, two mount projections  18  for mounting the cover  80  are arranged with a predetermined interval on each side surface of the base  10  parallel to the longitudinal direction of the base  10 . 
     As shown in  FIG. 3  to  FIG. 5 , the first fixed contact terminal  20 , the second fixed contact terminal  30  and the common fixed contact terminal  40  are formed as a plate body formed by pressing one conductive plate and arranged on an edge part of the long side of the base  10  by means of insert molding. The first fixed contact terminal  20 , the second fixed contact terminal  30  and the common fixed contact terminal  40  are arranged on one line, with the second fixed contact terminal  30  located between the first fixed contact terminal  20  and the common fixed contact terminal  40 , so as to be apart from each other. Further, the first fixed contact terminal  20 , the second fixed contact terminal  30  and the common fixed contact terminal  40  arranged on one line form switch parts SW 1 , SW 2 . 
     The first fixed contact terminal  20  is provided with a first fixed contact  21  arranged at an upper surface side of the base  10 , and a first fixed terminal  22  arranged at a bottom surface side of the base  10 . The second fixed contact terminal  30  is provided with a second fixed contact  31  arranged at the upper surface side of the base  10 , and a second fixed terminal  32  arranged at the bottom surface side of the base  10 . Further, the common fixed contact terminal  40  is provided with a common fixed contact  41  arranged at the upper surface side of the base  10 , and a common fixed terminal  42  arranged at the bottom surface side of the base  10 . Here, the first and the second fixed contacts  21 ,  31  are one example of the open and close fixed contact. 
     The first fixed contacts  21  are arranged on the upper surface of the base  10  at both ends of the short side at a side opposite to the support part  11  so as to be projected upwardly from the upper surface of the base  10 . The first fixed contact  21  is provided with a vertical part extended upwardly from the upper surface of the base  10 , and a horizontal part extended toward the support part  11  from an upper end part of the vertical part. The vertical part of the first fixed contact  21  is covered with an insulation member  23  and the horizontal part is exposed. The second fixed contact  31  is arranged below the horizontal part of the first fixed contact  21  so as to be projected upwardly from the upper surface of the base  10 . The horizontal part of the first fixed contact  21  and the second fixed contact  31  are integrated via an insulation part  33  to form a single plate body. The plate body is formed to be flat such that a step is not formed between surfaces of the first fixed contact  21 , the insulation part  33  and the second fixed contact  31 . Further, the common fixed contact  41  is arranged to be located between the first and the second fixed contacts  21 ,  31  and the support part  11  and projected upwardly from the upper surface of the base  10 . 
     As shown in  FIG. 4 , the first fixed terminal  22 , the second fixed terminal  32  and the common fixed terminal  42  are arranged with predetermined intervals therebetween, and each of them is projected downwardly from the bottom surface of the base  10 . 
     As shown in  FIG. 3  and  FIG. 4 , the slide body  50  is provided with a main part  51 , and two arms  52  extended in a parallel manner with a gap from both ends of one side surface of the main part  51 . 
     As shown in  FIG. 3 , the main part  51  is formed in a rectangular shape seen from an upper side. Slide body penetration holes  53  are arranged at both ends in a longitudinal direction of the upper surface of the main part  51 . Each of the slide body penetration holes  53  is formed in a rectangular shape having a long side extended in a short direction of the main part  51  and a short side extended in a longitudinal direction of the main part  51 . Projections  54  extended from the upper surface of the main part  51  toward a bottom surface of the main part  51  are arranged on both side surfaces in the longitudinal direction of the main part  51 . Further, as shown in  FIG. 4  and  FIG. 9 , a mount shaft  55  for mounting one end of the reverse spring  90  is arranged on the side surface of the main part  51  on which the arm  52  is arranged. 
     Each of the arms  52  is provided with a slide body rotation shaft  56  at a distal end of each arm  52 . The slide body rotation shaft  56  is formed to be housed in the rotation receiving part  13  of the base  10  and arranged such that a contact part of the slide body rotation shaft  56  with the rotation receiving part  13  forms a pivot of the slide body  50 . Further, a slide body projection  57  is arranged on an inward surface which faces another arm  52  of the slide body rotation shaft  56 . The slide body projection  57  is formed to be fitted with the slide body mount hole  14  of the support part  11  of the base  10 . Further, the slide body mount hole  14  of the base  10  and the slide body projection  57  of the slide body  50  form a temporary fixing mechanism for fixing the slide body  50  to the base  10  temporarily. 
     As shown in  FIG. 3  and  FIG. 4 , the movable touch piece  60  is formed in a rectangular shape seen from an upper side which is formed by pressing and bending a single conductive spring plate. The movable touch piece  60  is provided with a pair of first movable contacts  61  and a pair of second movable contacts  62  arranged at both ends respectively, and a mount mechanism arranged between the first and the second movable contacts  61 ,  62 . The movable touch piece  60  is formed to be movable with play in a short direction when the movable touch piece  60  is mounted to the slide body  50 . Further, the first movable contact  61  is one example of the open and close movable contact, and the second movable contact  62  is one example of the common movable contact. 
     The first movable contact  61  is formed to elastically clamp the first and the second fixed contacts  21 ,  31  along the longitudinal direction of the movable touch piece  60 . Further, the second movable contact  62  is formed to elastically clamp the common fixed contact along the longitudinal direction of the movable touch piece  60 . The first and the second movable contacts  61 ,  62  are arranged to elastically clamp either of the first and the second fixed contacts  21 ,  31 , and the common fixed contact  41  at the same time. 
     The mount mechanism of the movable touch piece  60  is provided with an insertion part  63  to be inserted into the slide body penetration hole  53  of the slide body  50 , and an elastic arm  65  for fixing the movable touch piece  60  to the slide body  50 . The insertion part  63  is formed in a rectangular plate body and extended in a perpendicular direction of the upper surface of the movable touch piece  60  from one side surface in the short direction of the movable touch piece  60 . A latching pawl  64  is arranged at a center of a lower end of the insertion part  63 . Further, the elastic arm  65  is formed in a folk like shape which can clamp the projection  54  of the slide body  50 , and the elastic arm  65  is extended from another side surface in the short direction of the movable touch piece  60  so as to face the insertion part  63 . A latching pawl  66  is arranged at a distal end of the elastic arm  65 . Each of the latching pawls  64 ,  66  is formed to be engaged with the bottom surface of the slide body  50  when the movable touch piece  60  is mounted to the slide body  50 . 
     Further, a projection  67  for enhancing rigidity is arranged between the first and the second movable contacts  61 ,  62  and the mount mechanism on the upper surface of the movable touch piece  60 . 
     As shown in  FIG. 3  and  FIG. 4 , the operation lever  70  is provided with an operation member  71 , and a pair of lever support parts  72  arranged at both ends of one surface of the operation member  71 . 
     The operation member  71  is formed in a rectangular plate body, and one curved surface is arranged in the short direction. Further, as shown in  FIG. 4 , a mount shaft  73  for mounting one end of the reverse spring  90  is arranged between the lever support parts  72  on a surface facing the curved surface. 
     Each of the lever support parts  72  is provided with an operation lever rotation shaft  74 . The operation lever rotation shaft  74  is formed in a cylindrical shape and arranged such that the center of the operation lever rotation shaft  74  forms a pivot of the operation lever  70 . That is, one operation lever rotation shaft  74  and another operation lever rotation shaft  74  are mutually extended in opposite directions along the longitudinal direction of the operation member  71 , and center axes of both of the operation lever rotation shafts  74  are arranged on the same straight line. Temporary fixing holes  75  are arranged at both ends in an axial direction of the operation lever rotation shaft  74 . The temporary fixing hole  75  penetrates the operation lever rotation shaft  74  in the axial direction, and the temporary fixing hole  75  is formed to be fitted with the base projection  15  of the support part  11  of the base  10 . Further, the base projection  15  of the base  10  and the temporary fixing hole  75  of the operation lever  70  form a temporary fixing mechanism for fixing the operation lever  70  to the base  10  temporarily. 
     Further, a part of the operation member  71  forms one example of the operation part, and a part of the operation member  71  and the lever support part  72  and the mount shaft  73  form one example of the rotation part. That is, in the operation lever  70 , the rotation part and the operation part are formed integrally. 
     A stepped part  76  is arranged between the operation member  71  and the lever support part  72 . Further, the operation lever penetration hole  77  for mounting one end of the return spring  91  is arranged on the lever support part  72  at a side of the operation member  71 . 
     As shown in  FIG. 3  and  FIG. 4 , the cover  80  is opened at a bottom surface and formed in a substantially parallelepiped shape to be mounted to the base  10 . In the cover  80 , a cover mount hole  81  for mounting the cover  80  to the base  10 , a support hole  82  for supporting the operation lever  70  in a rotatable manner, and an operation opening  83  to enable operation of the operation lever  70  are arranged. 
     The cover mount hole  81  is arranged at an opening side edge part of both side surfaces in the short direction of the cover  80  and formed to be fitted with the mount projection  18  of the base  10 . The support hole  82  is formed to be fitted with the operation lever rotation shaft  74  of the operation lever  70 . The support hole  82  is arranged at one corner at an upper surface side of the both side surfaces in the short direction of the cover  80 . The support hole  82  supports the operation lever rotation shaft  74  in a rotatable manner. Further, the operation opening  83  is opened at the side surface at a side where the support hole  82  is arranged among the side surfaces in the longitudinal direction of the cover  80  and opened at a part of the upper surface of the cover  80 . 
     Each of the reverse spring  90  and the return spring  91  is formed of, for example, carbon steel or stainless steel. The reverse spring  90  is formed as a coil spring, and both ends of the reverse spring  90  are formed to be mounted to the mount shaft  55  of the slide body  50  and the mount shaft  73  of the operation lever  70  respectively. Further, a spring length of the reverse spring  90  is adjusted such that elastic force is applied to the slide body  50  and the operation lever  70  to be always attracted to each other when the reverse spring  90  is mounted to the slide body  50  and the operation lever  70 . The return spring  91  is formed as a torsion spring, and both ends of the return spring  91  are bent in the same direction, and one end of the return spring  91  is formed to be mounted to the spring mount hole  16  of the base  10 . Further, a ring part  92  having an inner diameter into which the operation lever rotation shaft  74  of the operation lever  70  can be inserted is arranged in the return spring  91 . 
     An assembling method of the switch  100  having the configuration described above is described with reference to  FIG. 1 ,  FIG. 2  and  FIG. 5  to  FIG. 8 . 
     First, as shown in  FIG. 5  and  FIG. 6 , the slide body  50  to which two movable touch pieces  60  are mounted is temporarily fixed to the base  10  on which two switch parts SW 1 , SW 2  are arranged. At this time, as shown in  FIG. 6 , the slide body  50  is temporarily fixed to the base  10  in a state in which the slide body projection  57  is fitted with the slide body mount hole  14  of the base  10  and the first movable contacts  61  of the movable touch piece  60  clamp the first fixed contact  21 , and the second movable contacts  62  clamp the common fixed contact  41 . 
     Further, the movable touch piece  60  is mounted in a movable manner with play in the short direction, namely the rotation axis direction of the slide body  50 , and the pair of the first movable contacts  61  and the pair of the second movable contacts  62  are mounted in the rotation axis direction of the slide body  50 . Thus, even if an error is generated between a position in which the switch parts SW 1 , SW 2  are arranged and a position in which the switch parts SW 1 , SW 2  are designed, the movable touch piece  60  is moved in accordance with the position of the switch parts SW 1 , SW 2  when the slide body  50  is mounted to the base  10 , and thereby a position of the movable touch piece  60  is automatically adjusted. As a result, since it is not necessary to control positional accuracy of the switch parts SW 1 , SW 2  severely, a manufacturing cost can be reduced. 
     Next, as shown in  FIG. 7 , the base projection  15  (see  FIG. 5  and  FIG. 6 ) of the base  10  is fitted with the temporary fixing hole  75  of the operation lever  70 , and thereby the operation lever  70  is temporarily fixed to the base  10 . 
     When the slide body  50  and the operation lever  70  are temporarily fixed to the base  10 , as shown in  FIG. 8 , the slide body  50  and the operation lever  70  are joined via the reverse spring  90  by mounting one end of the reverse spring  90  to the mount shaft  55  of the slide body  50  and by mounting another end of the reverse spring  90  to the mount shaft  73  of the operation lever  70 . When the reverse spring  90  is mounted, the slide body  50  is attracted to the operation lever  70  by the reverse spring  90  and biased to be away from the base  10 . Thus, the slide body  50  is supported on the base  10  in a rotatable manner in a state in which the slide body rotation shaft  56  is in contact with the rotation receiving part  13  of the base  10 , and the slide body  50  is held at a first operation position defined by the lower surface  11   a  of the horizontal part of the support part  11  of the base  10 . 
     Here, the first operation position corresponds to a position of the slide body  50  where the first movable contact  61  is in contact with the first fixed contact  21  and the second movable contact  62  is in contact with the common fixed contact  41  and thereby the first fixed contact  21  and the common fixed contact  41  are electrically connected to each other. 
     Next, as shown in  FIG. 2 , one end of the return spring  91  is mounted to the spring mount hole  16  of the base  10  such that the operation lever rotation shaft  74  is inserted into the ring part  92  of the return spring  91 , and another end of the return spring  91  is mounted to the operation lever penetration hole  77  of the operation lever  70 . After the return spring  91  is mounted, when the operation lever  70  is pressed down, the operation lever  70  is biased by the return spring  91  to be returned toward a return position shown in  FIG. 2 . 
     At last, as shown in  FIG. 1 , the mount projection  18  of the base  10  is fitted with the cover mount hole  81  of the cover  80 , and thereby the cover  80  is mounted to the base  10 , and the assembling process of the switch  100  is ended. At this time, the cover  80  is mounted to the base  10  such that the operation lever rotation shaft  74  of the operation lever  70  is fitted with the support hole  82  and the operation lever  70  is projected through the operation opening  83  of the cover  80  in an operable manner. 
     In this way, when the switch  100  is assembled, the slide body  50  and the operation lever  70  can be fixed temporarily to the base  10 , and therefore temporary fixing can be performed before the product is completely assembled. Thus, this configuration facilitates the assembling of the switch  100 , and therefore the productivity of the switch  100  can be enhanced. 
     Next, operation of the switch  100  having the configuration described above is described with reference to  FIG. 9  to  FIG. 14 . 
     As described above, the switch  100  is provided with two switch parts SW 1 , SW 2 , and the switch parts SW 1 , SW 2  are switched at substantially the same time. 
     As shown in  FIG. 9 , in a state in which the operation lever  70  is located at the return position, the slide body  50  is held at the first operation position and thereby the first fixed contact  21  and the common fixed contact  41  are electrically connected. At this time, torque T 1  in a clockwise direction around the slide body rotation shaft  56  is applied to the slide body  50  by means of the elastic force of the reverse spring  90 . 
     When the operation lever  70  is pressed in an Y 1  direction and moved to a position shown in  FIG. 10 , the slide body rotation shaft  56  of the slide body  50  and an axial center CL of the reverse spring  90  are aligned on one straight line, and the torque T 1  applied to the slide body  50  disappears. Further, at the moment when the operation lever  70  is further pressed in the Y 1  direction and the operation lever  70  is pressed down to be located lower than the position shown in  FIG. 10 , torque T 2  in a counterclockwise direction is applied to the slide body  50 . That is, a direction of the torque applied to the slide body  50  is reversed from the clockwise direction to the counterclockwise direction, and thereby a snap action occurs. 
     When the torque T 2  is applied to the slide body  50 , the slide body  50  is biased toward the base  10  by means of elasticity of the reverse spring  90 , and the slide body  50  is started to rotate in the counterclockwise direction around the slide body rotation shaft  56 . Further, as shown in  FIG. 11 , the slide body  50  rotates toward a second operation position defined by the side surface  11   b  of the vertical part continued from the lower surface  11   a  of the horizontal part of the support part  11  and then stops. 
     Here, the second operation position corresponds to a position of the slide body  50  where the first movable contact  61  is in contact with the second fixed contact  31  and the second movable contact  62  is in contact with the common fixed contact  41  and thereby the second fixed contact  31  and the common fixed contact  41  are electrically connected to each other. 
     At this time, the first movable contact  61  of the movable touch piece  60  slides in the Y 1  direction on a surface of a plate body formed by the first and the second fixed contacts  21 ,  31  while clamping the plate body, and the second movable contact  62  slides in the Y 1  direction on the surface of the common fixed contact  41  while clamping the common fixed contact  41 . That is, with the rotation of the slide body  50 , the first movable contact  61  in contact with the first fixed contact  21  slides from the first fixed contact  21  to the second fixed contact  31  via the insulation part  33 , and the second movable contact  62  slides on the surface of the common fixed contact  41 . 
     After that, the operation lever  70  is pressed down to a position shown in  FIG. 12  so as to make contact with the support part  11  of the base  10  and then stopped. 
     When the pressing to the operation lever  70  is released, the operation lever  70  is pushed back in an Y 2  direction shown in  FIG. 13  by the elastic force of the return spring  91  to be returned to the return position shown in  FIG. 14 . When the operation lever  70  is moved from the position shown in  FIG. 12  to the position shown in  FIG. 13  by releasing the pressing to the operation lever  70 , the slide body rotation shaft  56  of the slide body  50  and the axial center CL of the reverse spring  90  are aligned on one straight line, and the torque T 2  applied to the slide body  50  disappears. Further, at the moment when the operation lever  70  is pushed back to be located upper than the position shown in  FIG. 13 , the torque T 1  in the clockwise direction is applied to the slide body  50 , and the direction of the torque applied to the slide body  50  is reversed from the counterclockwise direction to the clockwise direction, and thereby the snap action occurs. 
     In this way, the slide body  50  and the operation lever  70  rotatably supported on the base  10  are joined by the reverse spring  90 , and when the operation lever  70  is rotated to the predetermined position, the slide body  50  rotates by means of the elastic force of the reverse spring  90  and thereby the first movable contact  61  and the first and the second fixed contacts  21 ,  31  are in contact with or separate from each other. That is, the conductive path is directly switched by outer force applied to the operation lever  70 , and therefore a component such as an actuator is not necessary for transmitting the outer force to the operation lever  70 . Thus, the number of the components and assembling processes of the switch  100  are reduced, and the productivity of the switch  100  can be enhanced. 
     Further, in the switch  100 , when the operation lever  70  is rotated to the predetermined position, the slide body  50  rotates by means of the snap action due to the elastic force of the reverse spring  90 , and thereby the first movable contact  61  slides such that the first movable contact  61  and the first and the second fixed contacts  21 ,  31  are in contact with or separate from each other, and the second movable contact  62  slides while in contact with the common fixed contact  41 . Thus, since a foreign substance or the like generated on each surface of the first and the second movable contacts  61 ,  62  and the fixed contacts  21 ,  31 ,  41  is wiped, a wiping effect can be obtained, and therefore contact liability can be improved. 
     Further, when the switch parts SW 1 , SW 2  are switched, the second movable contact  62  slides by the rotation of the slide body  50  while in contact with the common fixed contact  41 . Thus, even if three or more switch parts are arranged, all switch parts can be switched at substantially the same time. 
     Further, in the switch  100 , the slide body  50  and the operation lever  70  have respective pivots different from each other. That is, the operation lever rotation shaft  74  which forms the pivot of the operation lever  70  is arranged above the slide body rotation shaft  56  which forms the pivot of the slide body  50 . Thus, the pressing force in the Y 1  direction of the operation lever  70  necessary for rotating the slide body  50  can be reduced compared to a switch in which a pivot of the slide body  50  and a pivot the operation lever  70  are arranged at the same position. That is, large driving force to the slide body  50  can be obtained by small pressing force to the operation lever  70 . As a result, even if three or more switch parts are arranged, the switch parts can be switched easily. 
     Further, in the switch  100 , the rotation range of the slide body  50  is defined by the lower surface  11   a  of the horizontal part of the support part  11  and the side surface  11   b  of the vertical part continued from the lower surface  11   a . Thus, the slide body  50  rotated by switching the switch parts SW 1 , SW 2  stops when the slide body  50  collides with the horizontal part and the vertical part of the support part  11  located adjacent to the slide body rotation shaft  56  which forms the pivot of the slide body  50 . In this way, since the horizontal part and the vertical part of the support part  11  are arranged adjacent to the slide body rotation shaft  56  which forms the pivot of the slide body  50 , the slide body  50  collides with the horizontal part and the vertical part of the support part  11  at a low collision speed when the slide body  50  is rotated. Thus, a noise generated when the slide body  50  collides with the horizontal part and the vertical part of the support part  11  can be reduced. 
     Other Embodiment 
     The number of the switch parts is not limited to two, and the number of the switch parts may be one (SW 1 ) as shown in  FIG. 15 , or the number of the switch parts may be three (SW 1  to SW 3 ) as shown in  FIG. 16 , and although it is not illustrated, the number of the switch parts may be four or more. Further, the switch parts are not limited to be arranged in one line; however the switch parts may be arranged such that the fixed contacts are not arranged in one straight line. 
     In the switch  100  described above, the slide body  50  and the operation lever  70  are joined by the reverse spring  90  and the conductive path is directly switched by means of the outer force applied to the operation lever  70 , however it is not limited to such a configuration. That is, the present invention can be applied to any switch as long as the switch has a configuration in which the open and close movable contact slides by means of the rotation of the slide body such that the open and close movable contact and at least one open and close fixed contact are in contact with or separate from each other and the common movable contact slides while in contact with the common fixed contact. 
     The assembling method of the switch is not limited to the embodiment described above. The base, the slide body and the operation lever may be assembled in any order as long as the reverse spring is mounted in a state in which the base, the slide body and the operation lever are assembled. 
     A metal material may be inserted into the rotation receiving part  13  of the base  10 . With this, strength of the rotation receiving part  13  can be enhanced. Further, a bearing structure may be adopted instead of the rotation receiving part  13 . 
     The plate body formed by the first and the second fixed contacts  21 ,  31  and the common fixed contact  41  may be formed in any size and in any shape as long as the first and the second movable contacts  61 ,  62  can slide by means of the rotation of the slide body  50  while in contact with the plate body formed by the first and the second fixed contacts  21 ,  31  and the common fixed contact  41 , respectively. 
     In the slide body  50 , the slide body penetration hole into which the movable touch piece is inserted, the slide body rotation shaft, and the mount shaft to which one end of the reverse spring is fixed may be formed integrally with each other, or alternatively may be formed separately from each other so as to be joined by an adhesive or the like to form the slide body. Further, the mount shaft  55  to which one end of the reverse spring  90  is fixed may be formed of metal material. With this, strength of the mount shaft  55  can be enhanced. 
     The movable touch piece  60  is fixed by inserting the insertion part  63  into the slide body penetration hole  53  of the slide body  50 , however it is not limited to this. For example, the movable touch piece  60  may be formed integrally with the slide body  50  by means of insert molding, or alternatively may be fixed to the slide body  50  by means of thermal caulking. With this, fixing strength of the movable touch piece  60  to the slide body  50  can be enhanced. 
     In the operation lever  70 , the operation member and the lever support part may be formed integrally, or alternatively may be formed separately from each other so as to be joined by an adhesive or the like to form the operation lever. Further, the mount shaft  73  to which one end of the reverse spring  90  may be formed of metal material. With this, strength of the mount shaft  73  can be enhanced. 
     Further, the operation body is not limited to the operation lever  70  as long as it can rotate the slide body  50 , and therefore a shape, a size, and the number of components or the like may be set in any manner in accordance with design or the like of the switch. For example, the operation body is not limited to a configuration in which the operation body is supported in a rotatable manner, and the operation body may be supported in a linearly movable manner. Further, the operation lever  70  is not limited to a configuration in which the operation part and the rotation part are formed integrally, and the operation part and the rotation part may be formed separately and joined to each other, or alternatively the operation part may be provided with a plurality of components, for example, an actuator which transmits the outer force to the rotation part and the operation member for operating the actuator. 
     The reverse spring  90  may be formed of any material as long as it can show elastic force in accordance with the design of the switch  100 . Further, the reverse spring  90  is not limited to the coil spring, and therefore a leaf spring, a torsion spring, a rubber or the like may be adopted. 
     The return spring  91  may be formed of any material as long as it can show elastic force to return the operation lever  70  to the return position against the elastic force of the reverse spring  90  when the operation lever  70  is pressed down. Further, the return spring  91  is not limited to the torsion spring, and therefore a coil spring, a leaf spring or the like may be adopted. 
     The temporary fixing mechanism for temporarily fixing the slide body  50  and the operation lever  70  to the base  10  is not limited to the configuration in the embodiment described above as long as the slide body  50  and the operation lever  70  can be temporarily fixed in a state in which the slide body  50  and the operation lever  70  are mounted to the base  10 . For example, a projecting portion may be formed on the base and a recessed portion which can be fitted with the projecting portion may be formed on the slide body. Further, a recessed portion may be formed on the base and a projecting portion which can be fitted with the recessed portion may be formed on the operation lever. 
     The components described in the embodiment described above may be assembled as needed, and any of the components may be selected, replaced or deleted as needed. 
     INDUSTRIAL APPLICABILITY 
     The switch according to the present invention can be used in, for example, an electric controlled parking brake for vehicles or the like. 
     DESCRIPTION OF SYMBOLS 
     
         
           10  base 
           11  support part 
           12  notch 
           13  rotation receiving part 
           14  slide body mount hole 
           15  base projection 
           16  spring mount hole 
           17  recess 
           18  mount projection 
           20  first fixed contact terminal 
           21  first fixed contact 
           22  first fixed terminal 
           30  second fixed contact terminal 
           31  second fixed contact 
           32  second fixed terminal 
           40  common fixed contact terminal 
           41  common fixed contact 
           42  common fixed terminal 
           50  slide body 
           51  main part 
           52  arm 
           53  slide body penetration hole 
           54  projection 
           55  mount shaft 
           56  slide body rotation shaft 
           57  slide body projection 
           60  movable touch piece 
           61  first movable contact 
           62  second movable contact 
           63  insertion part 
           64  latching pawl 
           65  elastic arm 
           66  latching pawl 
           67  projection 
           70  operation lever 
           71  operation member 
           72  lever support part 
           73  mount shaft 
           74  operation lever rotation shaft 
           75  temporary fixing hole 
           76  stepped part 
           77  operation lever penetration hole 
           80  cover 
           81  cover mount hole 
           82  support hole 
           83  operation opening 
           90  reverse spring 
           91  return spring 
           100  switch 
           161  movable contact