JP4430556B2 - Rotary switch device - Google Patents

Description

  The present invention provides a first switch and a second switch each configured by a movable contact that rotates in accordance with the rotation of the rotation shaft and a fixed contact that contacts the movable contact at a set rotation position of the rotation shaft. The present invention relates to a rotary switch device provided with a mechanism, and more particularly, to a rotary switch device suitably used for a vehicle ignition switch.

Since the vehicle ignition switch is disposed in a limited space, it is required to be miniaturized. However, as disclosed in Patent Document 1, the general ignition switch rotates together with the rotation shaft. Since the movable contact is arranged along two large and small virtual circles having different diameters on one surface of the rotor, and the movable contact is slidably contacted with the fixed contact, the rotor tends to be enlarged in the radial direction. On the other hand, an ignition switch having a configuration in which movable contacts having the same diameter are disposed at two positions spaced apart in the axial direction of the rotating shaft is disclosed in Patent Document 2, and according to this ignition switch, the radial direction Can be miniaturized.
JP-A-11-238438 JP 2002-124156 A

  However, in the one disclosed in Patent Document 2, the axial length of the ignition switch increases in the axial direction, and the number of components increases.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a rotary switch device that can be reduced in size while being able to reduce the number of parts.

In order to achieve the above object, the invention according to claim 1 is a movable contact that rotates according to the rotation of the rotation shaft, and a fixed contact that contacts the movable contact at a set rotation position of the rotation shaft. And a movable contact disposed on one surface of a single rotor that is coaxially connected to the rotating shaft so as not to rotate relative to the rotary shaft. The first switch mechanism includes a fixed setting provided on an inner surface corresponding to one surface of the rotor of a pair of case halves that are coupled to each other with the rotor sandwiched from both sides to form a switch case that accommodates the rotor. It is configured, and the movable contact disposed on the other surface of the rotor, the second switch mechanism and the fixed contact provided on the inner surface of the other case half which faces the other surface of the rotor is constructed, the first and First Conductive metal terminal plates forming fixed contacts connected to the power source among the fixed contacts provided in the switch mechanism are respectively provided in the case halves, and the joint formed by a part of the terminal plates is the the Rukoto to be joined together externally of both the case halves, wherein.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention, the fixed contacts are respectively connected to a plurality of conductive metal terminal plates which are insert-bonded to the two case halves made of synthetic resin. is formed, you wherein a portion of at least a portion of the terminal plate is projected so as to form an external connection terminal from the case half.

According to the configuration of the first aspect of the present invention, the movable contacts are respectively disposed on both surfaces of the single rotor that rotates together with the rotation shaft, and the fixed contacts are provided on the inner surfaces of the pair of case halves constituting the switch case. Since they are respectively provided, the rotary switch device can be downsized in the radial direction and the axial direction, and the number of parts can be reduced. Moreover, since the terminal plates that form the fixed contacts connected to the power source are joined to each other outside the case halves, the power connection terminals can be shared by the case halves.

According to the second aspect of the present invention, since the fixed contacts are respectively formed on the plurality of conductive metal terminal plates that are insert-bonded to the synthetic resin case half, the fixed contacts can be fixed to the case half. It becomes rigid, and since a portion of at least a portion of the terminal plate so as to form an external connection terminal is projected from the case halves, that Do facilitates external connection of the fixed contact.

  Hereinafter, embodiments of the present invention will be described based on examples of the present invention shown in the accompanying drawings.

  1 to 21 show a first embodiment of the present invention. FIG. 1 is a side view of a steering lock device and an ignition switch, FIG. 2 is an enlarged view taken along arrow 2 in FIG. 1, and FIG. FIG. 4 is an exploded perspective view of the ignition switch, FIG. 5 is a sectional view taken along line 5-5 in FIG. 3, and FIG. 6 is a sectional view of the first case half taken along line 6-6 in FIG. FIG. 7 is a view of the first case half as seen from the side opposite to FIG. 6, FIG. 8 is a view of the second case half as seen from the direction of arrows 8-8 in FIG. 9 is a view of the second case half viewed from the opposite side of FIG. 8, FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. 5, FIG. 11 is a cross-sectional view taken along line 11-11 in FIG. FIG. 13 is a view of the rotor as viewed from the first case half, FIG. 14 is a view of the rotor as viewed from the second case half, and FIG. 15 is the first switch mechanism. The figure which shows the connection state of the terminal board which forms a fixed contact, FIG. 16 is the figure which shows the connection state of the terminal board which forms the fixed contact of a 2nd switch mechanism, FIG. 17 is the movable contact and fixed contact in a 1st switch mechanism FIG. 18 is a diagram showing the relative arrangement of the movable contact and the fixed contact in the second switch mechanism, FIG. 19 is an enlarged view taken along arrow 19 in FIG. 1, and FIG. 20 is a guide on the first switch mechanism side. FIG. 21 is a circumferential development view of the guide portion on the second switch mechanism side.

  First, in FIG. 1 and FIG. 2, a metal body 23 provided in the steering lock device 22 is attached to the steering column 21, and a key (not shown) is placed at each of the LOCK position, the ACC position, the ON position, and the START position. An ignition switch 24 is attached to the rear portion of the body 23 as a rotary switch device that controls the start / stop of the vehicle engine and electrical components by changing the switching mode according to the operation.

  In FIG. 3, a rotating shaft 25 that rotates according to a key operation is rotatably supported on the body 23, and the ignition switch 24 changes a switching mode according to the rotation of the rotating shaft 25. First and second switch mechanisms 26 and 27 are provided.

  A rotor 28 made of a single synthetic resin is connected to the rotation shaft 25 so as not to be relatively rotatable. The rotor 28 is coupled to each other with the rotor 28 sandwiched from both sides. The switch case 29 is housed in a switch case 29 including two case halves 30 and 31, and the switch case 29 is attached to the rear portion of the body 23.

  4-9, in the 1st case half 30 arrange | positioned at the body 23 side among the 1st and 2nd case half bodies 30 and 31, the circular recessed part 32 opened to the 2nd case half 31 side is provided. The second case half 31 is provided with a circular recess 33 that opens to the first case half 30 side. The first case half 30 is integrally provided with a ring-shaped fitting protrusion 30a that forms a part of a circular recess 32 and protrudes toward the second case half 31. The protrusion 30 a is fitted into a fitting recess 33 a provided at the opening end of the recess 33 in the second case half 31.

  Thus, when the first and second case halves 30 and 31 are connected to each other to form the switch case 29, the recesses 32 and 33 cooperate to form a circular working chamber 34, and the rotor 28 is accommodated in the working chamber 34.

  Referring to FIG. 10 and FIG. 11 together, the peripheral portions of the first case half 30 that are spaced apart in the circumferential direction are extended to the second case half 31 side and the tip is bowl-shaped outward. The engaging claws 37, 38, 39 that are bent at the same time are integrally connected to the second case half 31, and the engaging holes 40, 41, 41, through which the engaging claws 37, 38, 39 are inserted, respectively. 42 is provided. Thus, the first and second case halves 30 and 31 are mutually engaged by elastically engaging the engagement claws 37 to 39 inserted into the respective engagement holes 40 to 42 to the second case half 31. The switch case 29 is configured by being coupled.

  A flat support surface 43 (see FIG. 3) for contacting the switch case 29 is formed at the rear part of the body 23. As shown in FIGS. A pair of left and right support walls 44 and 45 that sandwich a part of the first case half 30 from both sides are provided.

  On the other hand, on the upper portions of the first and second case halves 30 and 31, support collar portions 46 and 47 that are superposed on each other and protrude outward are integrally provided. In addition, the second case half 31 of the switch case 29 is covered with a synthetic resin cover member 48. As shown in FIG. The body 47 is provided with a support flange 49 that contacts from the outside, and the body 23 is integrally provided with a cylindrical boss 50 that protrudes from the support surface 43 and contacts the support flange 46 of the first case half 30. It is done. Further, a screw member 51 inserted through the support collars 49, 47, 46 is screwed into the boss 50, and abuts the support surface 43 and is restricted from moving in the left-right direction by the support walls 44, 45. The switch case 29 is attached to the body 23 together with the cover member 48 by tightening the screw member 51.

  13 and 14, the rotor 28 is integrally provided with a shaft portion 55 whose axis is coaxial and protrudes from both surfaces of the rotor 28. In addition, a cylindrical support cylinder 52 having both ends of the shaft portion 55 rotatably fitted and opened at both ends is provided at the center of the first case half 30. At the center portion, a bottomed cylindrical support tube portion 53 is provided for fitting the other end of the shaft portion 55 in a rotatable manner. In addition, the shaft portion 55 is provided with a bottomed engagement hole 54 opened at one end thereof so as to have a non-circular cross-sectional shape, and is coaxially and integrally connected to the end portion of the rotating shaft 25. The provided engaging shaft portion 25 a is inserted into the engaging hole 54. Moreover, the engagement shaft portion 25a has a cross-sectional shape corresponding to the cross-sectional shape of the engagement hole 54, and the rotation shaft 25 is connected to the shaft portion 55, that is, the rotor 28 so as not to be relatively rotatable. Become.

  The rotor 28 has a cylindrical sliding tube portion 56 that coaxially surrounds the shaft portion 55, and a flange portion 57 that protrudes radially outward from the sliding tube portion 56 and is partially cut off in the circumferential direction. Are integrally provided, and the first and second case halves 30 and 31 are slidably fitted with the sliding cylindrical portion 56 and the base end portion of the flange portion 57 is sandwiched from both sides. Cylindrical inner tube portions 58 and 59 are provided.

  A coiled torsion spring 60 is accommodated between the inner periphery of the recess 32 and the outer periphery of the inner cylinder part 58 in the first case half 30, and an engaging part 60 a provided at one end of the torsion spring 60 is the first. Engaged with the case half 30. In addition, a regulation recess 61 formed in an arc shape centering on the axis of the recess 32 is provided in the joint surface of the first case half 30 with the second case half 31. The restriction pin portion 60 b provided at the other end portion of the torsion spring 60 can be moved in the restriction recess portion 61 so as to communicate with the opening end of the recess portion 32 through the portion 62. Placed inside.

  The torsion spring 60 is provided with a locking portion 60c near the restriction pin portion 60b, and the rotating shaft 25, that is, the rotor 28 is locked to the LOCK at one end in the circumferential direction of the flange portion 57 of the rotor 28. An engaging portion 63 is provided that engages with the locking portion 60c when it is turned from the position to the ON position via the ACC position. Thus, when the rotor 28 is rotated from the ON position to the START position, the rotor 28 is rotated against the spring force of the torsion spring 60 when the engaging portion 63 is engaged with the locking portion 60c. Since the spring force from the torsion spring 60 acts on the rotor 28 when the operating force to the rotor 28 is released, the rotor 28 is automatically returned from the START position to the ON position.

  The first switch mechanism 26 is provided between one surface of the rotor 28 and the first case half 30, and includes movable contacts 65, 66, 67, 68 disposed on one surface of the rotor 28, and the first case half. Power supply fixed contacts 69, 70, IG2 fixed contact 71 and ACC fixed contact 72 provided on the body 30 are provided. Here, the power supply fixed contacts 69 and 70, the IG2 fixed contact 71, and the ACC fixed contact 72 are subjected to a shading process in FIG. 6 for easy understanding.

  The movable contacts 65 and 66 are formed in a conical shape protruding from both ends of the contact plate 73 disposed around the shaft portion 55 toward the first case half 30, and the movable contacts 67 and 68 are formed around the shaft portion 55. Both contact plates 73 and 74 including the movable contacts 65 and 66; 67 and 68 are formed in a conical shape by projecting from the both ends of the contact plate 74 to the first case half 30 side. The movable contacts 65 to 68 are formed on one surface of the rotor 28 with an interval of 90 degrees around the axis of the shaft portion 55.

  Moreover, the contact plates 73 and 74 are urged toward the first case half 30 by the springs 75..., And the relative position in the circumferential direction with respect to the rotor 28 is regulated and the axial direction is regulated. Are supported by the rotor 28 so as to be allowed to move relative to each other. That is, the movable contacts 65 to 68 are floatingly supported by the rotor 28 while being spring-biased toward the first case half 30 side.

  The fixed contacts for power 69 and 70 are formed so as to protrude a part of the terminal plate 76 made of conductive metal, and the fixed contacts 71 for IG2 and the fixed contact 72 for ACC are terminal plates 77 and 78 made of conductive metal. Formed by a part of. In addition, the terminal plates 76, 77, 78 are insert-bonded when the first case half 30 made of synthetic resin is molded, and before the insert connection, as shown in FIG. 78 is integrally connected by bridging portions 79, 80, 81, and the bridging portions 79-81 are punched after the first case half 30 is molded. That is, immediately after each terminal plate 76-78 is insert-bonded and the first case half 30 is molded, both front and back surfaces of the bridging portions 79-81 are exposed to both sides of the first case half 30. Concave portions are formed so as to face each other, and a part of each bridging portion 79 to 81 is punched out at a portion facing the concave portion to form the punched holes 82, 83, and 84, thereby forming the bridging portions 79 to 81. 81 is cut. Thus, after the molding of the first case half 30 is completed, the bridging portions 79 to 81 are punched out so that the terminal plates 76 to 78 are electrically disconnected from each other. It will be arranged.

  The fixed contact 71 for IG2 and the fixed contact 72 for ACC are flush with the sliding surface 112 formed around the support cylinder portion 52 so as to slide the movable contacts 65 to 68 on the rotor 28 side. The power supply fixed contacts 69 and 70 are arranged with a space between the sliding surface 112 and with a space between them. Moreover, the power fixed contacts 69 and 70, the IG2 fixed contact 71, and the ACC fixed contact 72 are orthogonal to the rotation axis of the rotor 28 on the locus C1 drawn by the movable contacts 65 to 68 as the rotor 28 rotates. Between the fixed contact for power supply 69 and the fixed contact for ACC 72, between the fixed contacts for power supply 69 and 70, and between the fixed contact for power supply 70 and the fixed contact for IG2 71. It is formed to be recessed on the side farther from the rotor 28 than the surface 112.

  The second switch mechanism 27 is provided between the other surface of the rotor 28 and the second case half 31, and includes movable contacts 85, 86, 87, 88 disposed on the other surface of the rotor 28, Power supply fixed contacts 89 and 90, an IG1 fixed contact 91, and a START fixed contact 92 provided on the case half 31 are provided. Here, the power supply fixed contacts 89 and 90, the IG1 fixed contact 91 and the START fixed contact 92 are shaded in FIG. 8 for easy understanding.

  The movable contacts 85 and 86 are formed in a conical shape projecting from both ends of the contact plate 93 disposed around the shaft portion 55 toward the second case half 31, and the movable contacts 87 and 88 are formed around the shaft portion 55. The contact plate 94 is formed in a conical shape protruding from both ends of the contact plate 94 toward the second case half 31, and both contact plates 93 and 94 are formed point-symmetrically with respect to the axis of the shaft portion 55. The movable contacts 85 to 88 are disposed on the other surface of the rotor 28 with an interval of 90 degrees around the axis of the shaft portion 55. Moreover, the movable contacts 85 to 88 are arranged at positions that are 90 degrees out of phase with the movable contacts 65 to 68 in the first switch mechanism 26.

  Both contact plates 93 and 94 are urged toward the second case half 31 by the springs 95..., And the relative position in the circumferential direction with respect to the rotor 28 is restricted, and in the range restricted in the axial direction. The rotor 28 is supported in a floating manner so as to allow relative movement. That is, the movable contacts 85 to 88 are floatingly supported by the rotor 28 while being spring-biased toward the second case half 31 side.

  The fixed contacts for power supply 89 and 90 are formed so that a part of the terminal plate 96 made of conductive metal is raised, and the fixed contact for IG1 91 and the fixed contact for START 92 are made of terminal plates 97 and 98 made of conductive metal. Formed by a part of. Moreover, the terminal plates 96 to 98 are insert-bonded when the second case half 31 made of synthetic resin is molded, and before the terminal connection, as shown in FIG. The bridge portions 99, 100, and 101 are integrally connected to each other, and the bridge portions 99 to 101 are punched after the second case half 31 is molded. That is, immediately after each terminal plate 96 to 98 is insert-bonded and the second case half 31 is molded, both front and back surfaces of the bridging portions 99 to 101 are exposed to both sides of the second case half 31. Recesses are formed so as to face each other, and by punching out part of each bridging part 99 to 101 at the part facing the concave part to form the punched holes 102, 103, 104, the bridging parts 96 to 98 is cut off. Thus, after the molding of the second case half 31 is completed, the bridging portions 96 to 98 are punched out, so that the terminal plates 96 to 98 are electrically disconnected from each other. It will be arranged.

  The fixed contact 91 for IG1 and the fixed contact 92 for START are flush with and spaced from the sliding surface 113 formed around the support cylinder portion 53 so as to slide the movable contacts 85 to 88 on the rotor 28 side. The power supply fixed contacts 89 and 90 are spaced apart from the sliding surface 113 and spaced from each other. In addition, the fixed contacts for power supply 89 and 90, the fixed contact for IG1 91, and the fixed contact for START 92 are the rotor 28 on the locus C2 (same as the locus C1) drawn by the movable contacts 85 to 88 as the rotor 28 rotates. Are arranged on a plane perpendicular to the rotation axis of the power supply, between the power supply fixed contact 89 and the START fixed contact 92, between the power supply fixed contacts 89 and 90, and between the power supply fixed contact 90 and the IG1 fixed contact 91. The gap is formed so as to be recessed toward the side farther from the rotor 28 than the sliding surface 113.

  By the way, in the first switch mechanism 26, the movable contacts 65 to 68 when the rotor 28 is sequentially rotated to the LOCK position, the ACC position, the ON position, and the START position, the power supply fixed contacts 69 and 70, and the IG2 fixed contact. The relative arrangement of 71 and ACC fixed contact 72 is as shown in FIG.

  According to FIG. 17, at the LOCK position, the movable contacts 65 and 66 are in contact with the power supply fixed contacts 69 and 70 and the movable contacts 67 and 68 are in contact with the IG2 fixed contact 71 and the ACC fixed contact 72. While the movable contacts 65 and 66 are not in contact with any fixed contact at the ACC position, the movable contacts 67 and 68 are in contact with the ACC fixed contact 72 and the power supply fixed contact 69, and are movable at the ON position. The contacts 65 and 66 are in contact with the power supply fixed contact 70 and the IG2 fixed contact 71, and the movable contacts 67 and 68 are in contact with the ACC fixed contact 72 and the power supply fixed contact 69. The movable contact 66 is in the START position. , 66; 67, 68 are not in contact with any fixed contact. That is, in the first switch mechanism 26, the ACC fixed contact 72 is electrically connected to the power fixed contact 69 at the ACC position, and the ACC fixed contact 72 is electrically connected to the power fixed contact 69 at the ON position and the IG2 fixed contact 71 is The power supply fixed contact 70 becomes conductive.

  In the second switch mechanism 27, the movable contacts 85 to 88 when the rotor 28 is sequentially rotated to the LOCK position, the ACC position, the ON position, and the START position, the power supply fixed contacts 89 and 90, and the IG1 fixed contact. FIG. 18 shows the relative arrangement between the reference numeral 91 and the fixed contact 92 for START.

  According to FIG. 18, at the LOCK position, the movable contacts 85 and 88 do not contact any of the fixed contacts, the movable contact 86 contacts the power source fixed terminal 90, and the movable contact 87 contacts the IG1 fixed contact 91. In the ACC position, the movable contacts 85, 86; 87, 88 are not in contact with any fixed contact, and in the ON position, the movable contacts 85, 86 are the power fixed contact 90 and the IG1 fixed contact 91. And the movable contacts 87 and 88 are not in contact with any of the fixed contacts. At the START position, the movable contacts 85 and 86 are in contact with the power supply fixed contact 90 and the IG1 fixed contact 91 and the movable contact. 87 and 88 are in contact with the START fixed contact 92 and the power fixed contact 89. That is, in the second switch mechanism 27, the IG1 fixed contact 91 is conducted to the power fixed contact 90 at the ON position, the START fixed contact 92 is conducted to the power fixed contact 89 at the START position, and the IG1 fixed contact 91 is The power supply fixed contact 90 is brought into conduction.

  By the way, a part of terminal plates 77 and 78 used as the fixed contact 71 for IG2 and the fixed contact 72 for ACC among the terminal plates 76 to 78 insert-coupled to the first case half 30 are fixed to the fixed contact 71 for IG2. The IG2 external connection terminal 106 and the ACC external connection terminal 107 connected to the ACC fixed contact 72 are projected from one surface of the first case half 30. Part of the terminal plates 96 to 98 that are insert-coupled to the second case half 31 includes a power supply external connection terminal 108 that is connected to the power supply fixed contacts 89 and 90, and an IG1 external connection terminal that is connected to the IG1 fixed contact 91. 109, and a START external connection terminal 110 connected to the START fixed contact 92, which protrudes from one surface of the second case half 31.

  Moreover, a part of the terminal plate 76 that is insert-coupled to the first case half 30 and a part of the terminal plate 96 that is insert-coupled to the second case half 31 are the first and second portions 76a and 96a. It protrudes outside from the case halves 30 and 31, and both joint portions 76a and 96a are joined to each other.

  Referring also to FIG. 19, the IG2 external connection terminal 106, the ACC external connection terminal 107, and the power supply projecting from one surface of the switch case 29 formed by joining the first and second case halves 30 and 31 together. The external connection terminal 108, the external connection terminal 109 for IG1 and the external connection terminal 110 for START are surrounded by a coupler 114 having a quadrangular cross section. This coupler 114 is a first coupler half 115 provided on the body 23. And a second coupler half 116 formed integrally with the cover member 48.

  The first coupler half 115 includes a pair of IG2 external connection terminal 106, ACC external connection terminal 107, power supply external connection terminal 108, IG1 external connection terminal 109, and START external connection terminal 110. IG2 external connection terminal 106, ACC external connection terminal 107, power supply external connection terminal 108, IG1 external connection terminal wall 115a, 115b and a connecting wall portion 115c connecting the side wall portions 115a, 115b. The connection terminal 109 and the START external connection terminal 110 are formed so as to surround from three sides, and the side wall portions 115a and 115b are integrally provided at the rear portion of the body 23 so as to sandwich the switch case 29 from both sides. , 45 have the same cross-sectional shape as those supporting walls 44, 45, and below It provided continuously and integrally so as to extend, also the connecting wall portion 115c is protruded from the body 23 downwardly with its inner surface so as to Ren'nara the rear of the support surface 43 dihedral one body 23.

  The second coupler half 116 is formed integrally with the cover member 48 so as to be detachably fitted to the both side wall portions 115a and 115b of the first coupler half 115. A pair of fitting wall portions 116a and 116b that can be fitted to the pair of side wall portions 115a and 115b included in the portion 115 and a connecting wall portion 116c that connects the fitting wall portions 116a and 116b are integrally provided. .

  Moreover, the outer surfaces of the front end portions of the fitting wall portions 116a and 116b of the second coupler half portion 116 can be elastically engaged with the side wall portions 115a and 115b of the first coupler half portion 115 from the inner side. The claws 117 and 118 are respectively projected. That is, a single engagement groove 119, 120 is provided on the inner surface of each of the side wall portions 115a, 115b, and the engagement claws at the distal ends of the fitting wall portions 116a, 116b are provided in the engagement grooves 119, 110, respectively. 117 and 118 are each elastically engaged.

  Thus, when the mating coupler 121 is fitted into the coupler 114 with the first and second coupler halves 115 and 116 constituting the coupler 114, the outer surface of the mating coupler 121 is the second coupler. It will contact | abut to the inner surface of the fitting wall part 116a, 116b in the half part 116. FIG.

  The coupling wall portion 116c of the second coupler half 116 is provided with an engagement hole 122 for elastically engaging the engagement claw 121a included in the counterpart coupler 121.

  In FIG. 20, the rotation of the rotation shaft 25 and the rotor 28 in the first switch mechanism 26 is given a sense of moderation by the click mechanism 124, and the click mechanism 124 moves the axis of the rotation shaft 25. A pair of guide portions 125 formed in the first case half 30 of the switch case 29 at least in the shape of an arc as a center, and a pair of contact plates 73 and 74 that can contact the guide portions 125. It is comprised with the rolling elements 126 ... as a contact engagement part provided.

  In the first case half 30, a cylindrical portion 127 surrounding a portion where the power supply fixed contacts 69 and 70, the IG2 fixed contact 71 and the ACC fixed contact 72 are provided, is float-supported at the tip of the rotor 28. It is provided coaxially with the rotating shaft 25 and the support cylinder part 52 so as to face the outer peripheral parts of the contact plates 73 and 74, and is point-symmetric with respect to the axis of the support cylinder part 52 at the tip of the cylinder part 127. Thus, a pair of guide portions 125 formed at least in an arc shape is provided.

  On the other hand, the contact plates 73 and 74 are provided with holding portions 128 swelled in a semicircular shape toward the rotor 28 at the central portion between the movable contacts 65 and 66; 67 and 68, and these holding portions 128 are provided. ... the rolling elements 126 are held rotatably.

  The guide portion 125 includes a LOCK positioning portion 130 that positions and holds the rolling element 126 at the LOCK position of the rotor 28, an ACC positioning portion 131 that positions and holds the rolling element 126 at the ACC position of the rotor 28, and the ON state of the rotor 28. An ON positioning portion 132 that positions and holds the rolling element 126 at a position is provided at a distance from each other.

  Two cam ridges 133 and 134 are provided between the LOCK positioning portion 130 and the ON positioning portion 132 in the guide portion 125, and the cam ridge 133 between the LOCK positioning portion 130 and the ACC positioning portion 131 is a movable contact. Ascending slope 133a for ascending rolling element 126 and descending slope 133b for descending rolling element 126 are formed in a continuous mountain shape along the moving direction of rotor 28 toward the side where rotor 68 contacts power source fixed contact 69. The cam crest 134 between the positioning portion 131 and the ON positioning portion 132 is a rolling element 126 along the moving direction of the rotor 28 toward the side where the movable contacts 65 and 66 are brought into contact with the power fixed contact 70 and the IG2 fixed contact 71. The mountain where the uphill part 134a for climbing the hill and the downhill part 134b for descending the rolling element 126 are successively connected. It is formed on. Since the START position does not need to be positioned and held, the positioning portion is not set. However, when the rotor 28 is rotated from the ON positioning portion 132 to the START position, the rolling element 126 is gently lifted. An uphill portion 135 is formed in the guide portion 125.

  By the way, the first switch mechanism 26 makes the ACC fixed contact 72 conduct to the power supply fixed contact 69 at the ACC position of the rotor 28, and conducts the ACC fixed contact 72 to the power supply fixed contact 69 at the ON position. The fixed contact 71 is conducted to the power supply fixed contact 70, and the conduction angle at which the ACC fixed contact 72 is conducted to the power supply fixed contact 69 is ascending from the intermediate part of the uphill part 133a of the cam mountain 133 through the cam mountain 134. The conduction angle at which the IG2 fixed contact 71 is electrically connected to the power supply fixed contact 70 is set as between the middle part of the climbing part 134a and the middle of the climbing part 135 in the cam mountain 134. Is done. That is, the cam crest 133 starts to contact the ACC fixed contact 72 and the power supply fixed contact 69 of the movable contacts 67 and 68 while the rolling element 126 climbs the climbing portion 133a and moves while descending the climbing portion 133a. The contacts 67 and 68 are formed so as to be separated from the ACC fixed contact 72 and the power supply fixed contact 69, and the cam crest 134 has movable contacts 65 and 66 in the middle of the rolling element 126 climbing the uphill portion 134a. Contact with the fixed power supply contact 70 and the fixed contact for IG2 71 is started, and the rolling element 126 comes from the fixed power supply contact 70 for the movable contacts 65 and 66 and the fixed contact for IG2 71 on the way down the climbing portion 134a. It is formed so that separation is started.

  In FIG. 21, the rotation of the rotation shaft 25 and the rotor 28 by the second switch mechanism 27 is given a sense of moderation by the click mechanism 138, and the click mechanism 138 uses the axis of the rotation shaft 25 as an axis. A pair of guide portions 139 formed at least in a circular arc shape at the center and provided in the second case half 31 of the switch case 29, and a pair of contact plates 93 and 94 that can contact the guide portions 139, respectively. It is comprised with the rolling elements 140 ... as a contact engagement part provided.

  The second case half 31 has a cylindrical portion 141 surrounding a portion where the power supply fixed contacts 89 and 90, the IG1 fixed contact 91 and the START fixed contact 92 are provided, and the tip portion is supported by the rotor 28 in a floating manner. It is provided coaxially with the rotation shaft 25 and the support cylinder part 53 so as to face the outer peripheral parts of the contact plates 93 and 94, and is point-symmetric with respect to the axis of the support cylinder part 53 at the tip of the cylinder part 141. Thus, a pair of guide portions 139... Is provided.

  On the other hand, the contact plates 93 and 94 are provided with holding portions 142... Swelled in a semicircular shape toward the rotor 28 at the center between the movable contacts 85 and 86; 87 and 88. ... the rolling elements 140 are held rotatably.

  The guide part 139 includes a LOCK positioning part 143 for positioning and holding the rolling element 140 at the LOCK position of the rotor 28, an ACC positioning part 144 for positioning and holding the rolling element 126 at the ACC position of the rotor 28, and the rotor 28 being turned on. An ON positioning portion 145 that positions and holds the rolling element 140 at a position is provided at an interval.

  In the guide portion 139, two cam peaks 146, 147 are provided between the LOCK positioning portion 143 and the ON positioning portion 144, and the cam peaks 147 between the ACC positioning portion 144 and the ON positioning portion 145 are movable contacts. An uphill portion 147a for ascending the rolling element 140 along the direction of movement of the rotor 28 toward the side where the power contacts 85 and 86 are brought into contact with the power fixed contact 90 and the IG1 fixed contact 91 and a downhill portion 147b for descending the rolling element 140 are sequentially provided. It is formed in a continuous mountain shape. In addition, a gentle climbing portion 148 that gently climbs the rolling element 140 when the rotor 28 is rotated from the ON positioning portion 144 to the START position is formed in the guide portion 125. The positioning portions 143 to 145, the cam peaks 146 and 147, and the climbing portion 148 in the guide portion 139 are the positioning portions 130 to 132, the cam peaks 133 and 134, and the climbing portion 135 of the guide portion 125 in the first switch mechanism 26, respectively. They are formed with the same phase.

  By the way, the second switch mechanism 26 causes the fixed contact 91 for IG1 to conduct to the power fixed contact 90 at the ON position of the rotor 28, and conducts the fixed contact 91 for IG1 to the fixed contact 90 for power supply at the STARAT position of the rotor 28. In addition, the START fixed contact 92 is conducted to the power fixed contact 89, and the conduction angle at which the IG1 fixed contact 91 is conducted to the power fixed contact 90 is from the intermediate part of the uphill part 147a in the cam mountain 147 to the uphill part 148. Further, the conduction angle at which the START fixed contact 92 conducts to the power fixed contact 89 is set to a predetermined range in the intermediate portion of the climbing portion 148. In other words, the cam crest 147 starts to contact the movable contact 85 and 86 to the power fixed contact 90 and the IG1 fixed contact 91 while the rolling element 140 climbs the climbing portion 147a and moves while descending the climbing portion 147a. The contacts 85 and 86 are formed so as to be separated from the power fixed contact 90 and the IG1 fixed contact 91.

  In the first switch mechanism 26, the back of the sliding surface 112 provided in the first case half 30 faces the back of the IG2 fixed contact 71 and the ACC fixed contact 72 as clearly shown in FIG. A recess 149 is provided, and the recess 149 is closed by a lid member 150 fitted to the first case half 30 so as to be detachable from the body 23 side. Thus, between the lid member 150 and the first case half 30, a grease reservoir 151 disposed on the back of the sliding surface 112 is formed, and the gap between the sliding surface 112 and the grease reservoir 151 is formed. The movable contacts 65 to 68 are connected to each other via a communication hole 152 located on the locus C1 of the sliding contact portion with the sliding surface 112. The connecting hole 152 is provided in the fixed contact 71 for IG2, for example.

  In the second switch mechanism 27, the back surface of the sliding surface 113 provided in the second case half 31 faces the back of the fixed contact 91 for IG1 and the fixed contact 92 for START as clearly shown in FIG. A recess 153 is provided, and the recess 153 is closed by a cover member 48 that covers the second case half 31 from the side opposite to the body 23. Thus, between the cover member 48 and the second case half 31, a grease storage portion 154 disposed at the back of the sliding surface 113 is formed, and between the sliding surface 113 and the grease storage portion 154 is formed. The movable contacts 85 to 88 are connected via a connecting hole 155 located on the locus C2 of the sliding contact portion with the sliding surface 113. The connecting hole 155 is provided in the second case half 31, for example.

  Next, the operation of the first embodiment will be described. A movable member disposed on one surface of a single rotor 28 that is coaxially connected to a rotation shaft 25 that is rotatably supported by the body 23 so as not to be relatively rotatable. The first and second case halves 30 and 31 that are connected to each other with the rotor 28 sandwiched from both sides to form the contacts 65 to 68 and the switch case 29 that accommodates the rotor 28 are disposed on the body 23 side. The first switch mechanism 26 is composed of fixed contacts 69 to 72 provided on the inner surface corresponding to one surface of the rotor 28 of the first case half 30, and movable contacts 85 to 88 disposed on the other surface of the rotor 28. And the fixed contacts 89 to 92 provided on the inner surface of the second case half 31 facing the other surface of the rotor 28, the second switch mechanism 27 is configured, so that the ignition switch is radially and axially switched. It is possible to reduce the number of components it is possible to reduce the size of the 24.

  The fixed contacts 69 to 72; 89 to 92 are respectively connected to a plurality of conductive metal terminal plates 76 to 78 and 96 to 97 which are insert-bonded to the first and second case halves 30 and 31 made of synthetic resin. Since it is formed, the fixed contacts 69 to 72; 89 to 92 are firmly fixed to the first and second case halves 30 and 31. In addition, the first and second case halves are such that at least a part of the terminal plates 77, 78, 96-99 among the terminal plates 76-78; 96-97 form the external connection terminals 106-110. Since it protrudes from 30,31, the external connection of the stationary contacts 69-72; 89-92 becomes easy.

  Further, among the fixed contacts 69 to 72; 89 to 92 included in the first and second switch mechanisms 26 and 27, terminal plates 76 and 96 forming the power fixed contacts 69 and 70; Since the first and second case halves 30 and 31 are joined to each other outside, the first and second case halves 30 and 31 can share the power supply external connection terminal 108.

  By the way, a synthetic resin cover member 48 that covers at least a part of the switch case 29 is attached to the body 23, and a plurality of external connection terminals 106 to 110 protruding from one surface of the switch case 29 are sandwiched therebetween. A first coupler half 115 having a pair of side wall portions 115a and 115b and a connecting wall portion 115c connecting the side wall portions 115a and 115b and surrounding each of the external connection terminals 106 to 110 from three sides is integrated with the body 23. A second coupler half 116 formed in cooperation with the first coupler half 115 includes a coupler 114 that is formed and has a rectangular cross section that surrounds the external connection terminals 106 to 110. The cover member 48 is formed integrally with the side wall portions 115a and 115b of the portion 115 so as to be detachably fitted.

  That is, the half of the coupler 114 having a quadrangular cross section is constituted by the first coupler half 115 formed integrally with the metal body 23, and the remaining half of the coupler 114 is at least one of the switch case 29. Since the second coupler half portion 116 is formed integrally with the cover member 48 made of synthetic resin to cover the switch portion, the coupler 114 can be configured while reducing the size of the switch case 29, and the first coupler. Since the half portion 115 is made of metal, the strength of the coupler 114 can be increased.

  Further, when the mating coupler 121 is fitted to the coupler 114, the mating coupler 121 can be fitted with the pair of mating walls 116 a and 116 b that can be fitted to the pair of side walls 115 a and 115 b included in the first coupler half 115. Are provided in the second coupler half 116 so that the inner surface is in contact with the outer surface of each of the two wall portions 115a and 116b, and is elastically engaged with the both side wall portions 115a and 115b from the inner side. Since the engaging claws 117 and 118 to be obtained are projected, the assembly of the second coupler half 116 to the first coupler half 115 is facilitated, and when the mating coupler 121 is fitted to the coupler 114, Since the outer surface of the mating coupler 121 comes into contact with the inner surfaces of the pair of fitting wall portions 116a and 116b provided in the second coupler half portion 116, both side wall portions of both the fitting wall portions 116 and 116b. 15a, fitted wearing state is to be maintained rigidly to 115b.

  The first and second case halves 30 and 31 constituting the switch case 29 are provided with sliding surfaces 112 and 113 for sliding the movable contacts 65 to 68; 85 to 88, and the fixed contact 71 for IG2 and The ACC fixed contact 72 is provided flush with the sliding surface 112, and the IG1 fixed contact 91 and the START fixed contact 92 are provided flush with the sliding surface 113. Grease storage portions 151 and 154 are formed on the back portion of 113. In addition, a communication hole 152 provided in the fixed contact 71 for IG2 is provided so that the space between the sliding surface 112 and the grease storage portion 151 is located on the locus C1 of the sliding contact portion of the movable contacts 65 to 68 with respect to the sliding surface 112. And is provided in the second case half 31 so that the sliding surface 113 and the grease storage portion 154 are located on the locus C2 of the sliding contact portion of the movable contacts 85 to 88 with the sliding surface 113. Connected through a connecting hole 155.

  Therefore, each time the movable contacts 65 to 68; 85 to 88 slide on the sliding surfaces 112 and 113, the oil content of the grease stored in the grease reservoirs 151 and 154 is transferred from the connecting holes 152 and 155 to the movable contacts 65 to 68. 85 to 88 and the sliding contact portions of the sliding surfaces 112 and 113, and the oil is spread on the sliding locus of the movable contacts 65 to 68; 85 to 88. At this time, the thickness of the oil film on the sliding track is almost constant due to the effect of surface tension, and the amount of grease supplied automatically depends on the amount of grease consumed by self-heating due to dissociation arcs and Joule heat. Adjusted to. Therefore, the amount of grease on the sliding locus is always maintained at an appropriate level regardless of the magnitude of the electrical load and the number of repetitions, and the movable contacts 65-68; 85-85 are not required to increase the distance between the contacts. 88 and the fixed contacts 69 to 72; 89 to 92 can be maintained in an appropriate amount of grease, and the insulation and durability can be maintained over a long period of time, so that the ignition switch 24 can be downsized.

  In the first and second switch mechanisms 26, 27, the click mechanisms 124, 138 that give a sense of moderation to the rotation of the rotation shaft 25 and the rotor 28 are formed at least in an arc shape around the axis of the rotation shaft 25. In addition, the guide portions 125 and 139 provided with positioning portions 130, 131, and 132; 143, 144, and 145 at a plurality of locations, and the positioning portions 130, 131, and 132; 143, 144, and 145 are detachably engaged. The rolling elements 126 serving as contact engagement portions provided on the contact plates 73 and 74; 93 and 94 that are floatingly supported by the rotor 28 so that they can be brought into contact with the guide portions 125 and 139. ..., 140 ....

  Therefore, it is possible to accurately position the contact plates 73, 74; 93, 94, that is, the movable contacts 65-68; 85-88, at a predetermined rotational position, and therefore the contact plates 73, 74; 93, 94 with respect to the rotor 28. The size of the contact plates 73, 74; 93, 94 does not need to be supplemented, and it is not necessary to make the contact plates 73, 74; 93, 94 large, thereby avoiding an increase in the size of the ignition switch 24. be able to.

  Moreover, the rolling elements 126... 140 are separately assembled from the contact plates 73, 74; 93, 94 so as to be rotatable on the contact plates 73, 74; 93, 94. Friction loss when moving while abutting 139 can be reduced.

  Further, in the guide portion 125 of the first switch mechanism 26, two cam peaks 133 and 134 are provided between the LOCK positioning portion 130 and the ON positioning portion 132. The cam mountain 133 includes a rolling element 126 and a climbing portion 133a. The contact of the movable contact 68 to the fixed contact for power 69 is started while climbing up and the separation of the movable contact 68 from the fixed contact for power 69 is started while descending the climbing portion 133a. In the cam mountain 134, the contact of the movable contacts 65 and 66 with the power fixed contact 70 and the IG2 fixed contact 71 is started while the rolling element 126 climbs the climbing part 134a, and the rolling element 126 descends the climbing part 134a. In the middle, the movable contacts 65 and 66 are formed so as to be separated from the power source fixed contact 70 and the IG2 fixed contact 71.

  That is, by applying a certain operating force, the rotor 28 is moved to the side where the movable contact 68 contacts the power source fixed contact 69 and the side where the movable contacts 65 and 66 contact the power source fixed contact 70 and the IG2 fixed contact 71. When the rolling element 126 climbs the climbing portions 133a and 134a of the cam hills 133 and 134, the spring force that biases the rolling element 126 to the side that makes contact with the cam 133 gradually increases. When the contact of the fixed contacts 69, 70, 71 of the 68, 65, 66 is started, the speed becomes relatively slow, the side where the movable contact 68 is separated from the fixed contact 69 for power supply, and the movable contacts 65, 66 Is moving the rotor 28 to the side away from the power supply fixed contact 70 and the IG2 fixed contact 71, the rolling element 126 has the uphill portion 133 of the cam peaks 133, 134. , 134a, the spring force that urges the rolling element 126 to abut the cam crest 133, 134 gradually decreases, so that the movable contacts 68, 65, 66 can be opened from the fixed contacts 69, 70, 71. The speed at which separation begins is relatively fast. That is, the speed at the start of contact of the movable contacts 68, 65, 66 to the fixed contacts 69, 70, 71 is decreased, and the opening speed of the movable contacts 68, 65, 66 from the fixed contacts 69, 70, 71 is increased. It is possible to prevent the contact performance from being adversely affected by the opening and closing of the movable contacts 68, 65, 66 and the fixed contacts 70, 71, 72.

  Further, in the guide portion 139 of the second switch mechanism 27, two cam peaks 146, 147 are provided between the LOCK positioning portion 143 and the ON positioning portion 144. The cam mountain 147 has the rolling element 140 as the uphill portion 147a. In the middle of climbing, the contact of the movable contacts 85 and 86 to the power fixed contact 90 and the IG1 fixed contact 91 is started, and while the climbing portion 147a is descended, the power fixed contacts 90 and IG1 of the movable contacts 85 and 86 are started. It is formed so that the separation from the fixed contact 91 is started.

  In other words, when the rotor 28 is moved to the side where the movable contacts 85 and 86 are in contact with the power supply fixed contact 90 and the IG1 fixed contact 91 by applying a certain operating force, the rolling element 140 climbs the cam mountain 147. Since the spring force that urges the rolling element 140 to abut the cam 147 when climbing the portion 147a gradually increases, the speed at which the contact of the movable contacts 85 and 86 with the fixed contacts 90 and 91 is started. When the rotor 28 is moved to the side where the movable contacts 85 and 86 are separated from the power supply fixed contact 90 and the IG1 fixed contact 91, the rolling element 140 is the climbing portion of the cam mountain 147. Since the spring force that urges the rolling element 140 to abut the cam crest 147 when descending 147a gradually decreases, the movable contacts 85 and 86 are separated from the fixed contacts 90 and 91. Speed at which the is relatively fast. That is, the speed of the movable contacts 85 and 86 at the start of contact with the fixed contacts 90 and 91 can be reduced, and the speed of opening the movable contacts 85 and 86 from the fixed contacts 90 and 91 can be increased. It is possible to prevent the contact performance from being adversely affected by the opening and closing of the 86 and the fixed contacts 90 and 91.

  As a second embodiment of the present invention, as shown in FIG. 22, a part of the click mechanism is formed on contact plates 73 ', 74'; 93 ', 94' provided with movable contacts 65-68, 85-88. The abutting engagement portions 157... To be integrally provided may be provided.

  According to the second embodiment, the contact engagement portions 157... Are integrated with the contact plates 73 ′, 74 ′; 93 ′, 94 ′, so that the number of parts can be reduced.

  As a third embodiment of the present invention, as shown in FIG. 23, the back portions of the movable contacts 65 to 68 and 85 to 88 formed in a conical shape so as to be in sliding contact with the sliding surfaces 112 and 113 are covered with a lid member 159. Is closed at the back of each movable contact 65-68, 85-88, and the tip of each movable contact 65-68, 85-88, that is, the sliding contact portion with the sliding surface. A communication hole 160 that opens the outer end and communicates the inner end with the grease reservoirs 158 may be provided.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the present invention described in the claims. It is.

It is a side view of the steering lock device and the ignition switch of the first embodiment. FIG. 2 is an enlarged view taken along arrow 2 in FIG. 1. FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 2. It is a disassembled perspective view of an ignition switch. FIG. 5 is a sectional view taken along line 5-5 of FIG. It is the figure which looked at the 1st case half from the 6-6 line arrow direction of FIG. It is the figure which looked at the 1st case half from the opposite side to Drawing 6. It is the figure which looked at the 2nd case half from the 8-8 line arrow direction of FIG. It is the figure which looked at the 2nd case half from the opposite side to Drawing 8. FIG. 10 is a sectional view taken along line 10-10 in FIG. FIG. 11 is a cross-sectional view taken along line 11-11 in FIG. 5. FIG. 12 is a sectional view taken along line 12-12 of FIG. These are the figures which looked at the rotor from the 1st case half body side. It is the figure which looked at the rotor from the 2nd case half body side. It is a figure which shows the connection state of the terminal board which forms the fixed contact of a 1st switch mechanism. It is a figure which shows the connection state of the terminal board which forms the fixed contact of a 2nd switch mechanism. It is a figure which shows the relative arrangement | positioning of the movable contact and fixed contact in a 1st switch mechanism. It is a figure which shows the relative arrangement | positioning of the movable contact and fixed contact in a 2nd switch mechanism. FIG. 19 is an enlarged view taken along arrow 19 in FIG. 1. FIG. 6 is a circumferential development view of a guide portion on the first switch mechanism side. It is a circumferential direction developed view of the guide portion on the second switch mechanism side. It is a principal part perspective view of 2nd Example. It is principal part sectional drawing of 3rd Example.

25 ... rotating shaft 26 ... first switch mechanism 27 ... second switch mechanism 28 ... rotor 29 ... switch case 30 ... first case half 31 ... second case Half bodies 65, 66, 67, 68, 85, 86, 87, 88 ... movable contacts 69, 70, 71, 72, 89, 90, 91, 92 ... fixed contacts 76, 77, 78; 96, 97, 98 ... Terminal board
76a, 96a ... joints 106, 107, 108, 109, 110 ... external connection terminals

Claims (2)

The movable contact (65, 66, 67, 68; 85, 86, 87, 88) that rotates according to the rotation of the rotation shaft (25), and the set rotation position of the rotation shaft (25) First and second switch mechanisms (26, 27) each composed of fixed contacts (69, 70, 71, 72; 89, 90, 91, 92) that contact the movable contacts (65-68, 85-88). A movable contact (65-68) disposed on one surface of a single rotor (28) that is coaxially connected to the rotating shaft (25) so as not to rotate relative thereto, and the rotor The rotor (28) of one (30) of a pair of case halves (30, 31) that are coupled to each other with the rotor (28) sandwiched from both sides to form a switch case (29) that houses (28). ) Provided on the inner surface corresponding to one surface A first switch mechanism (26) is constituted by the constant contacts (69 to 72), and the movable contact (85 to 88) disposed on the other surface of the rotor (28) and the other surface of the rotor (28). The second switch mechanism (27) is composed of the fixed contacts (89 to 92) provided on the inner surface of the other case half (31) facing each other, and the first and second switch mechanisms (26, 27) are respectively Of the fixed contacts (69-72, 89-92) provided, the terminal plates (76, 96) made of conductive metal forming the fixed contacts (69, 70; 89, 90) connected to the power supply are the case halves (30 , 31) and joint portions (76a, 96a) formed by a part of the terminal plates (76, 96) are joined to each other outside the case halves (30, 31). rotary switch device, characterized in that that. The fixed contacts (69 to 72, 89 to 92) are a plurality of conductive metal terminal plates (76, 77, 78; 96, 96) which are insert-bonded to the case halves (30, 31) made of synthetic resin. 97, 98), and at least some of the terminal plates (77, 78; 96-98) form the external connection terminals (106, 107, 108, 109, 110). rotary switch equipment according to claim 1, wherein the protruded from half (30, 31).

Images