JP2010036844A - Theft preventative device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a rotative operational force from being transmitted to a theft preventative operational means even in cases where a tumbler is unjustly operated aiming at trouble making or theft-committing in a theft preventative device for vehicles whose operational knob can be rotatably operated so that a rotative operational force is transmitted to a theft preventative working means in response to the insertion of a regular mechanical key into the keyhole of the inner cylinder. <P>SOLUTION: Into an outer cylinder 17 to be connected to a theft preventative working means 13 and rotatably supported by a body 15, an inner cylinder is coaxially inserted for switching between states for allowing the outer cylinder 17 to rotate or blocking it from rotating in response to the insertion/non-insertion of the regular mechanical key 58 into the keyhole 19. A connection changeover means 59 for connecting an operational knob 18 and the outer cylinder 17 relatively unrotatably at the time of the insertion of the regular mechanical key 58 into the keyhole 19, is installed, between the inner cylinder 16 and the operational knob 18 with the outer cylinder 17 in between. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention includes a body that is fixed to a support, an inner cylinder that has a key hole and is non-rotatably supported by the body and on which a plurality of tumblers are mounted, and is disposed coaxially with the inner cylinder. A vehicle theft comprising an operation knob and capable of rotating the operation knob so as to transmit a rotation operation force to the anti-theft actuating means in response to insertion of a regular mechanical key into the key hole The present invention relates to a prevention device.

  As a vehicle anti-theft device, a regular mechanical key is inserted into the key hole of the inner cylinder where the tumbler is mounted, and the inner cylinder is rotated by holding the grip of the mechanical key. Conventionally, a pin or an ignition switch is operated.

  However, in the conventional ones as described above, the entire mechanical key is enlarged from the viewpoint of operability when grasping the grip portion and the viewpoint of operation strength, leading to an increase in the size of the inner cylinder, and the portability of the mechanical key is reduced. It gets worse. In particular, when a mechanical key is operated with a hand fitted with a glove such as a motorcycle, such a problem occurs more remarkably.

Therefore, there is a patent that separates the mechanical key and the operating knob, switches the permission and prohibition of operation of the operating knob by operating the mechanical key, and bears the rotational load of operating the lock pin and ignition switch by the operating knob It is disclosed in Document 1 and Patent Document 2.
Japanese Patent No. 3616279 Japanese Patent No. 3616298

  In the technique disclosed in Patent Document 1, an operation knob that surrounds an inner cylinder that is non-rotatably supported by a fixed body is pivoted and supported by the body. When the key is not inserted, the tumbler attached to the inner cylinder engages with the operation knob, thereby preventing the operation knob from rotating. When the regular mechanical key is inserted into the key hole, the tumbler is engaged with the operation knob. The operation knob is allowed to rotate by releasing the connection.

  Moreover, in what is disclosed by the said patent document 2, the inner cylinder connected to the movable contact board which comprises a part of ignition switch so that relative rotation is impossible is rotatably inserted in the cylindrical part with which a fixed body is provided. An operation knob that is connected to the movable contact plate so as not to rotate relative to the cylindrical portion and is supported by the body so that the operation knob is rotatable, and an inner mechanical key is not inserted into the key hole of the inner cylinder. When the tumbler mounted on the cylinder engages with the cylindrical portion of the body, the inner cylinder and the movable contact panel are prevented from rotating, that is, the operation knob connected to the movable contact panel is prevented from rotating. When the mechanical key is inserted, the inner cylinder and the movable contact panel are rotated by releasing the engagement of the tumbler with the cylindrical portion. Rotation of the operation knob is connected to ie movable contact point board is to be allowed.

  However, in the one disclosed in Patent Document 1 and Patent Document 2 described above, consideration is given to picking in which the operation knob is illegally rotated by operating the tumbler by an unauthorized operation without using a regular mechanical key. Not. In addition, since the operation knob can be easily rotated, no consideration is given to the mischief of rotating the operation knob without inserting the mechanical key into the key hole, or the destruction caused by the forcible turning due to an operation error.

  The present invention has been made in view of such circumstances, and a vehicle in which the turning operation force of the operation knob is not transmitted to the anti-theft operation means even if the tumbler is illegally operated for the purpose of mischief or theft. An object of the present invention is to provide an anti-theft device.

  In order to achieve the above object, a first aspect of the present invention includes a body fixed to a support, an inner having a key hole and non-rotatably supported by the body and having a plurality of tumblers attached thereto. A cylinder and an operation knob disposed coaxially with the inner cylinder, and the operation knob is transmitted so as to transmit a rotation operation force to the anti-theft operation means in response to insertion of a regular mechanical key into the key hole. In the vehicle anti-theft device capable of rotating, an outer cylinder connected to the anti-theft actuating means and rotatably supported by the body is connected to a non-regular mechanical key to the key hole. When the tumbler is engaged with the outer cylinder during insertion to prevent the outer cylinder from rotating, and when the regular mechanical key is inserted into the key hole, The inner cylinder is inserted coaxially so as to switch the state of allowing the outer cylinder to rotate by releasing the engagement of the tumbler with the cylinder, and when inserting a regular mechanical key into the key hole, Although the operation knob and the outer cylinder are connected in a relatively non-rotatable manner, a connection switching means for releasing the connection between the operation knob and the outer cylinder interposes the outer cylinder when a normal mechanical key is not inserted into the key hole. Further, the operation knob is provided between the inner cylinder and the operation knob, and the operation knob is supported by the outer cylinder so as to be relatively rotatable so as to cover a protruding portion of the outer cylinder from the body.

  According to a second aspect of the present invention, in addition to the configuration of the first aspect of the present invention, one end of a pin that penetrates the side wall of the outer cylinder so as to allow the outer cylinder to rotate is provided on the body. Of these, the first support hole is opened in the side surface close to and opposite to the support body, and the other end of the pin is inserted into the second support hole provided in the inner cylinder.

  In addition to the configuration of the invention described in claim 1 or 2, the invention described in claim 3 defines the relative positions of the outer cylinder and the operation knob at a position where the connection switching means can be connected. A positioning / torque limiter mechanism is provided between the outer cylinder and the operation knob for rotating the operation knob around the outer cylinder when a rotational operation force is input to the operation knob when the connection switching means is in a non-connected state. It is characterized by.

  The head pipe 11 of the embodiment corresponds to the support body of the present invention, and the steering lock mechanism 13 of the embodiment corresponds to the anti-theft operation means of the present invention.

  According to the first aspect of the invention, unless the proper mechanical key is inserted into the inner cylinder, the connection switching means does not connect the operation knob and the outer cylinder so as not to be relatively rotatable. Even if the tumbler can be tampered with and the outer cylinder can be rotated, the operating knob only rotates idlely around the outer cylinder, and the operating force of the operating knob is transmitted to the anti-theft actuating means via the outer cylinder. There is no. When a proper mechanical key is inserted into the inner cylinder, the operation knob and the outer cylinder are connected so as not to rotate relative to each other by the connection switching means, and the outer cylinder can rotate around the inner cylinder. The operating force is transmitted to the anti-theft actuating means via the outer cylinder.

  According to the second aspect of the present invention, it is easy to connect the body and the inner cylinder with the pin while allowing the outer cylinder to rotate, and make the inner cylinder non-rotatable and support it on the body. Since the first support hole through which the part is inserted opens in the side surface of the body that is close to and faces the support body, one end of the pin is hidden by the support body when the body is attached to the support body. Thus, the pin is not removed by mischief, and the inner cylinder cannot be turned undesirably.

  Further, according to the third aspect of the present invention, the relative position between the outer cylinder and the operation knob can be determined by the positioning / torque limiter mechanism at the position where the coupling switching means can be connected, and the connection switching means. When the rotational operating force is input to the operation knob when the is in a disconnected state, the operation knob can be idled around the outer cylinder by the positioning / torque limiter mechanism. The operating force is not transmitted to the outer cylinder, and it is possible to avoid the anti-theft operating means from being undesirably released.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on one embodiment of the present invention shown in the accompanying drawings.

  1 to 10 show an embodiment of the present invention, FIG. 1 is a front view of an anti-theft device, and FIG. 2 is a state where an operation knob is in a LOCK position and no mechanical key is inserted into a key hole. Fig. 3 is a cross-sectional view taken along line 2-2 in Fig. 1, Fig. 3 is a cross-sectional view corresponding to Fig. 2 in a state in which a normal mechanical key is inserted into the key hole and the operation knob is turned to the ON position, and Fig. 4 is theft. 5 is an exploded perspective view of the prevention device, FIG. 5 is a view taken in the direction of the arrow 5 in FIG. 3 with the body cover removed, FIG. 6 is a sectional development view taken along the line 6-6 in FIG. FIGS. 8 and 8 are cross-sectional views taken along the line 8-8 in FIG. 3. FIG. 8A shows a state in which the operation knob is in the OFF position and the mechanical key is not inserted, and FIG. FIG. 9 is a sectional view taken along the line 9-9 in FIG. 2, and FIG. It is a sectional view corresponding to FIG. 9 in ON state.

  1 to 4, an antitheft device according to the present invention is attached to a head pipe 11 in a vehicle body frame of a vehicle such as a motorcycle. This anti-theft device includes a steering lock mechanism 13 as an anti-theft actuating means that can be engaged with a steering shaft 12 supported so as to be steerable by the head pipe 11, and an ignition switch. The switching operation of 14 switching modes is enabled, and it has a body 15 attached to the head pipe 11 and a bottomed key hole 19 and is supported non-rotatably by the body 15 and has a plurality of rotations. The inner cylinder 16 to which the tumblers 20, 20... Are mounted, and the steering lock mechanism 13 and the ignition switch 14 are connected to the body 15 so as to be pivotally supported, and the inner cylinder 16 is inserted coaxially. Outer cylinder 17 and coaxial with inner cylinder 16 Wherein so as to be over the protrusion from the body 15 of the outer cylinder 17 and an operation knob 18 supported relatively rotatably on the outer cylinder 17.

  The body 15 has a cylinder hole 21 that opens at the front end (the left end in FIGS. 2 and 3) of the body 15, and a switch housing hole 22 that opens at the rear end of the body 15 (the right end in FIGS. 2 and 3). A partition wall 23 that separates the cylinder hole 21 and the switch housing hole 22 and an opening 25 that opens in front of the partition wall 23 and on the side opposite to the head pipe 11 and communicates with the rear end of the cylinder hole 21 are provided. .

  A body cover 26 is attached to the body 15, and the body cover 26 is a front part having a gap between a short cylindrical portion 26 a that coaxially surrounds the front end of the body 15 and the front end of the body 15. The inward flange portion 26b projecting inward in the radial direction from the front end of the short cylindrical portion 26a and the short cylinder formed in an arc shape in cross section so as to cover a half circumference of the body 15 A cover plate portion 26c connected to the portion 26a is integrally formed, and the opening 25 is closed by the cover plate portion 26c in a state where the body cover 26 is attached to the body 15.

  An ignition switch 14 is disposed in the switch housing hole 22, and a contact holder 27 provided in the ignition switch 14 is rotatably fitted in the switch housing hole 22, and the cylinder 23 is inserted into the cylinder 23. A through hole 24 that is coaxial with the hole 21 and the switch accommodation hole 22 is provided.

  The outer cylinder 17 integrally has a cylinder main portion 17a formed in a bottomed cylindrical shape with an open front end and a connecting shaft portion 17b coaxially connected to the rear portion of the cylinder main portion 17a. It is formed in a non-circular cross section. The cylinder main portion 17a is inserted into the cylinder hole 21 so that a part of the cylinder main portion 17a protrudes forward from the body 15 so as to be axially slidable and rotatable around the axis. On the outer periphery of the rear portion of the main portion 17a, a flange portion 17c projecting radially outward so as to be in sliding contact with the inner periphery of the cylinder hole 21 is integrally provided.

  A joint member 28 is accommodated in the rear portion of the cylinder hole 21, and the joint member 28 allows sliding in the axial direction, but disables relative rotation, and connects the outer cylinder 17. A connecting portion 28a that forms a connecting recess 29 into which the shaft portion 17b is fitted, a cam portion 28b that is formed in a crank shape connected to the connecting portion 28a, and is rotatable in the through hole 24 of the partition wall 23 in the axial direction. The shaft portion 28c connected to the cam portion so as to be inserted through the cam portion and the switch connecting shaft portion 28d having a non-circular shape and connected to the shaft portion 28c are integrally provided, and the switch connecting shaft portion 28d is fitted and connected to the contact holder 27 of the ignition switch 14 so as to prevent relative rotation around the axis while allowing relative movement in the axial direction.

  The steering lock mechanism 13 includes a lock pin 31 supported on the body 15 so as to be able to engage with the steering shaft 12 by sliding operation in a plane orthogonal to the axis of the cylinder hole 21, and a cam portion of the joint member 28. A connecting member 32 that is fixed to the lock pin 31 by passing through 28b, and is contracted between the connecting member 32 and the body 15 so as to urge the lock pin 31 to the side where the engagement with the steering shaft 12 is released. The spring 33 is provided.

  A mounting protrusion 15 a that protrudes outward on the opposite side of the opening 25 and is attached to the head pipe 11 is integrally formed on the body 15, and is orthogonal to the axis of the cylinder hole 21. The lock pin 31 is slidably fitted in a slide hole 34 provided in the mounting projection 15a and the cam portion 28b of the joint member 28 is connected to the connection member 32 in the cylinder hole 21. The That is, the connecting member 32 is provided with a connecting hole 35 through which the cam portion 28b is inserted, and the cam portion 28b is formed in a crank shape so that the joint member 28 is locked as the joint member 28 rotates. The pin 31 is driven to slide.

  On the other hand, the side wall of the head pipe 11 is provided with a through hole 36 that communicates with the sliding hole 34. The through hole 36 and the sliding hole 34 of the steering shaft 12 that are supported to be steerable by the head pipe 11. Locking recesses 37 are provided at corresponding axial positions, and the lock pin 31 engages with the locking recesses 37 to prevent the steering shaft 12 from rotating as shown in FIG. A state in which the steering operation is blocked, and a state in which the steering shaft 12 is allowed to rotate by being pulled into the body 15 to be released from the locking recess 37 as shown in FIG. Can be switched.

  By the way, the outer cylinder 17 is connected to the joint member 28 so as not to be relatively rotatable. Since the joint member 28 is connected to the steering lock mechanism 13 and the ignition switch 14, the outer cylinder 17 is connected via the joint member 28. The steering lock mechanism 13 and the ignition switch 14 are connected.

  A return spring 39 is contracted between a spring receiving plate 38 and a contact holder 27 that are in contact with a step portion 28e formed between the shaft portion 28c of the joint member 28 and the switch connecting shaft portion 28d. The joint member 28 is elastically biased toward the front side (the left side in FIGS. 2 and 3) by the spring force of the return spring 39. However, the forward limit of the joint member 28 is restricted when the receiving plate 38 abuts against the partition wall 23 of the body 15. A spring 40 that is contracted between the joint member 28 and the outer cylinder 17 is accommodated in the connecting recess 29 at the front end of the joint member 28, and the outer cylinder 17 is moved forward by the spring force exerted by the spring 40. The bullet is energized towards.

  Referring also to FIG. 5, the operation knob 18 has a flange 18 a that protrudes inward in the radial direction so that its rear end faces the flange 17 c of the outer cylinder 17 and abuts against the front end of the outer cylinder 17. Is formed in a cylindrical shape that coaxially surrounds the outer cylinder 17 in front of the flange portion 17c of the outer cylinder 17, and the rear portion of the operation knob 18 is the front portion of the cylinder hole 21 in the body 15. Fitted. Further, on the outer periphery of the operation knob 18, an arc-shaped first protrusion 41 that extends approximately half a circumference and a second protrusion 42 that is disposed at the center between both ends of the first protrusion 41 are provided at the front end of the body cover 26. The inwardly extending flange portion 26b and the front end of the body 15 are integrally protruded.

  Thus, the outer cylinder 17 is elastically biased forward by the spring force of the spring 40 contracted between the joint member 28 and the outer cylinder 17, but the flange portion 17c of the outer cylinder 17 is operated by the operation knob. 18, the first and second protrusions 41, 42 included in the operation knob 18 come into contact with the inward flange 26 b at the front end of the body cover 26, so that the outer cylinder 17 and the operation knob 18 are moved forward. Be blocked. Further, the operation knob 18 and the outer cylinder 17 can be retracted to the retreat limit where the first and second protrusions 41 and 42 of the operation knob 18 abut against the front end of the body 15.

  Referring to FIG. 1, the operation knob 18 can be rotated from the LOCK position to the ON position through the OFF position. When the operation knob 18 is in the LOCK position together with the outer cylinder 17, the steering lock is performed. The lock pin 31 of the mechanism 13 engages with the locking recess 37 to prevent the steering shaft 12 from rotating, that is, to prevent the steering operation, and the operation knob 18 rotates to the OFF position together with the outer cylinder 17. When this occurs, the lock pin 31 of the steering lock mechanism 13 is disengaged from the engaging recess 37 to allow the steering shaft 12 to rotate, that is, to permit the turning operation, and the operation knob 18 is in the outer state. When the cylinder 17 is rotated to the ON position, the ignition switch 14 is not shown. It will change the switching mode so as to start the engine.

  Referring also to FIG. 6, the operation knob 18 is required to be pushed when it is rotated from the OFF position to the LOCK position, and the operation knob 18 is provided on the inwardly facing flange portion 26 b at the front end of the body cover 26. The guide protrusion 43 has a restricting surface 44 extending in the axial direction of the operation knob 18 so that the second protrusion 42 of the operation knob 18 is brought into contact with the operation knob 18 from the ON position side when the operation knob 18 is in the OFF position. Is protruded rearward, and when the operation knob 18 is in the OFF position, the second protrusion 42 of the operation knob 18 abuts against the restriction surface 44 to prevent the rotation toward the LOCK position. Therefore, the operation knob 18 can be turned to the LOCK position by pushing the operation knob 18 until the second protrusion 42 passes over the guide protrusion 43. On the other hand, the surface of the guide projection 43 facing the OFF position is formed as an inclined surface 45 that is inclined so as to gradually become the rear position toward the OFF position, and the operation knob 18 is moved from the LOCK position to the OFF position. When the second projecting portion 42 is guided by the inclined surface 45, the operation knob 18 is automatically pushed so as to get over the guide projecting portion 43.

  Referring also to FIG. 7, the cylinder main portion 17 a of the outer cylinder 17 forms a housing recess 46 opened forward, and the inner cylinder 16 is inserted into the housing recess 46. The inner cylinder 16 is provided with a bottomed key hole 19 whose front end is opened, and a cap 48 having an insertion hole 47 communicating with the key hole 19 is attached to the front end of the inner cylinder 16. A spring 49 that biases the inner cylinder 16 forward is provided between the cylinder main portion 17 a and the inner cylinder 16.

  Moreover, a first support in which one end portion of the pin 51 penetrating the side wall of the outer cylinder 17 so as to allow the rotation of the outer cylinder 17 opens on the side surface of the body 15 that is close to and faces the head pipe 11. The other end of the pin 51 is inserted into the bottomed second support hole 53 provided at the inner end of the inner cylinder 16 through the hole 52, and biased forward by the spring 49. The inner cylinder 16 is supported by the body 15 so as to be fixedly disposed in the housing recess 46.

  An insertion hole 54 through which the pin 51 is inserted is provided at a rear portion of the cylinder main portion 17a of the outer cylinder 17 so as to cut out a part of the flange portion 17c provided on the outer periphery of the cylinder main portion 17a. The insertion hole 54 is formed so as to extend long in the circumferential direction of the cylinder main portion 17 a so as to allow the outer cylinder 17 to be rotated between the LOCK position and the ON position, and is connected to the outer cylinder 17. In order to enable the axial movement between the OFF position and the LOCK position of the operation knob 18 located in the cylinder main body 17a, it is formed long in the axial direction.

  8, a plurality of, for example, four locations spaced in the circumferential direction of the inner periphery of the accommodating recess 46 in the cylinder main portion 17a are provided with engaging grooves 55, 55... Extending in the axial direction. Are mounted so as to be able to engage with one of the engaging grooves 55, 55..., Which are arranged at positions spaced apart in the axial direction. , 20... And the inner cylinder 16 are respectively provided with springs 56 for urging the tumblers 20, 20.

  Thus, the tumblers 20, 20... Engage with one of the engagement grooves 55, 55... As shown in FIG. 8A when the mechanical key 58 is not inserted into the key hole 19. The outer cylinder 17 is prevented from rotating when the tumblers 20, 20... Of the inner cylinder 16 fixedly supported by the body 15 are engaged with the engagement grooves 55. When the regular mechanical key 58 is inserted into the key hole 19, each tumbler 20, 20,... Is disengaged from the engagement groove 55 as shown in FIG. 16 is moved against the spring force of the springs 56... The outer cylinder 17 is rotated by rotating the operation knob 18 in this state.

  That is, the inner cylinder 16 is connected to the steering lock mechanism 13 and the ignition switch 14, and is supported on the body 15 so as to be rotatable. When the regular mechanical key 58 is not inserted into the key hole 19, the outer cylinder 17 To prevent the outer cylinder 17 from rotating, and when the regular mechanical key 58 is inserted into the key hole 19, the tumblers 20, 20,. Is released, and the outer cylinder 17 is inserted into the cylinder main portion 17a of the outer cylinder 17 in a coaxial manner so as to be switched to a state in which the rotation of the outer cylinder 17 is allowed.

  Between the inner cylinder 16 and the operation knob 18 with the outer cylinder 17 interposed, the operation knob 18 and the outer cylinder 17 are connected so as not to rotate relative to each other when the regular mechanical key 58 is inserted into the key hole 19. However, when the regular mechanical key 58 is not inserted into the key hole 19, connection switching means 59 for releasing the connection between the operation knob 18 and the outer cylinder 17 is provided.

  Referring also to FIG. 9, the connection switching means 59 is arranged behind the portion where the tumblers 20, 20... Are arranged and slides in a direction parallel to the tumblers 20, 20. A first swirler 60 that is attached to the inner cylinder 16 and a second swirler 61 that is spring-biased in a direction to contact the first swirler 60 and is slidably supported by the outer cylinder 17. The second swider 61 can be engaged with the operation knob 18.

  The first swirler 60 has an insertion hole 62 through which the tip of a regular mechanical key 58 inserted into the key hole 19 is inserted. When the mechanical key 58 is not inserted, as shown in FIG. When one of the plurality of engaging grooves 55, 55... Is in a non-actuated position with one end projecting and a regular mechanical key 58 is inserted into the insertion hole 62, as shown in FIG. The swirler 60 is driven to an operating position in which one end thereof is detached from the engagement groove 55 and is drawn into the inner cylinder 16.

  Thus, at the other end of the first swirler 60, when the first swirler 60 is moved to the operating position, an arcuate pressure that overlaps the outer periphery of the inner cylinder 16 when viewed from the axial direction of the inner cylinder 16. A surface 63 is formed.

  The second swider 61 has ears 61 a, 61 a projecting on both sides along the circumferential direction of the outer cylinder 17 on one end side along the radial direction of the outer cylinder 17. Is formed with an arc-shaped pressure receiving surface 64 which is in contact with the pressing surface 63 of the first swirler 60. The outer cylinder 17 is provided with an insertion hole 65 for allowing the second swirler 61 to be slid in a direction obliquely intersecting the sliding direction of the first swirler 60. A corresponding engagement hole 66 is provided in the operation knob 18.

  An arc-shaped recess 67 is formed on the outer periphery of the outer cylinder 17 at a portion where the insertion hole 65 is provided, and a slider cover 68 attached to the outer periphery of the outer cylinder 17 so as to be accommodated in the recess 67. An opening 69 through which the other end of the second swider 61 is inserted is provided. In addition, the second swirler 61 is placed in a direction in which the pressure receiving surface 64 of the second swider 61 is brought into contact with the pressing surface 63 of the first swider 60 between the both ears 61a of the second swider 61 and the slider cover 68. A pair of springs 70 and 70 to be urged are contracted.

  Thus, when the first swirler 60 is in the non-operating position, as shown in FIG. 9, the other end of the second swirler 61 is in a position where it is detached inward from the engagement hole 66 of the operation knob 18. In this state, the outer cylinder 17 and the operation knob 18 are not connected. When the second swider 61 is in the operating position, the other end of the second swider 61 is engaged with the engagement hole 66 of the operation knob 18 as shown in FIG. 17 and the operation knob 18 are connected, and the outer cylinder 17 rotates together with the operation knob 18 in accordance with the rotation operation of the operation knob 18. At this time, the pressing surface 63 of the first swirler 60 and the pressure receiving surface 64 of the second swirler 61 are formed so as to be in sliding contact with each other within the rotation range of the outer cylinder 17.

  By the way, in order to connect the outer cylinder 17 and the operation knob 18 by the connection switching means 59, the relative positions of the outer cylinder 17 and the operation knob 18 are directed to the insertion hole 65 provided in the outer cylinder 17 and the operation knob 18. It is necessary for the joint hole 66 to be in a position corresponding to each other, so that the relative positions of the outer cylinder 17 and the operation knob 18 are determined, and the operation knob 18 when the connection switching means 59 is in the non-connected state. A positioning / torque limiter mechanism 71 is provided between the outer cylinder 17 and the operation knob 18 so as to idle the operation knob 18 around the outer cylinder 17 when the rotational movement power is input to.

  As clearly shown in FIG. 5, the positioning / torque limiter mechanism 71 is fitted with the protrusion 72 and an angular protrusion 72 that is provided integrally with the flange 17 c of the outer cylinder 17 and protrudes forward. The fitting recess 73 is provided at the rear end of the operation knob 18 so that the protrusion 72 is fitted in the fitting recess 73. The relative position is a position that can be connected by the connection switching means 59. In addition, when the rotational operating force is input to the operation knob 18 in a state where the outer cylinder 17 and the operation knob 18 are not connected by the connection switching means 59, the operation knob 18 is configured to disengage the fitting recess 73 from the protrusion 72. The outer cylinder 17 rotates backward while being retracted, and the rotational force is not transmitted from the operation knob 18 to the outer cylinder 17.

  Next, the operation of this embodiment will be described. An inner cylinder 16 having a key hole 19 and a plurality of tumblers 20, 20... Mounted to be non-rotatably supported by the body 15 includes a steering lock mechanism 13 and an ignition switch. 14 is coaxially inserted into the outer cylinder 17 that is rotatably supported by the body 15 and is engaged with the outer cylinder 17 when the regular mechanical key 58 is not inserted into the key hole 19. Thus, the rotation of the outer cylinder 17 is prevented, and when the regular mechanical key 58 is inserted into the key hole 19, the engagement of the tumblers 20, 20,. The outer casing 17 is covered with the outer cylinder 17 so as to cover the protruding portion from the body 15. The operation knob 18 supported so as to be relatively rotatable with respect to the rotor 17 is connected to the outer cylinder 17 so as not to be rotatable relative to the key hole 19 by the connection switching means 59 when the regular mechanical key 58 is inserted into the key hole 19. When the regular mechanical key 58 is not inserted, the connection of the operation knob 18 and the outer cylinder 17 by the connection switching means 59 is released.

  Therefore, unless the regular mechanical key 58 is inserted into the key hole 19 of the inner cylinder 16, the connection switching means 59 does not connect the operation knob 18 and the outer cylinder 17 so that they cannot be rotated relative to each other. Even if the outer cylinder 17 can be turned by improperly operating 20, 20,..., The operation knob 18 only rotates idly around the outer cylinder 17, and the turning operation force of the operation knob 18 is steered via the outer cylinder 17. There is no transmission to the lock mechanism 13 and the ignition switch 14. When a regular mechanical key 58 is inserted into the key hole 19 of the inner cylinder 16, the operation switch 18 and the outer cylinder 17 are connected so as not to rotate relative to each other by the connection switching means 59, and the outer cylinder 17 rotates around the inner cylinder 16. Therefore, the turning operation force of the operation knob 18 is transmitted to the steering lock mechanism 13 and the ignition switch 14 via the outer cylinder 17.

  In addition, a first support hole 52 that opens at a side face of the body 15 that is close to and faces the head pipe 11 of the pin 51 that penetrates the side wall of the outer cylinder 17 so as to allow the outer cylinder 17 to rotate. The other end of the pin 51 is inserted into the second support hole 53 provided in the inner cylinder 16, so that the body 15 and the inner cylinder 16 are connected to the pin 51 while allowing the outer cylinder 17 to rotate. The first support hole 52 into which one end of the pin 51 is inserted is close to the head pipe 11 and is opposed to the head pipe 11. Since it opens to the side, one end of the pin 51 is hidden by the head pipe 11 when the body 15 is attached to the head pipe 11. Will be put away, will be removed by the pin 51 Gaitazura never inner cylinder 16 becomes rotatable undesirably.

  Furthermore, between the outer cylinder 17 and the operation knob 18, the relative position of the outer cylinder 17 and the operation knob 18 is determined at a position where the connection switching means 59 can be connected, and the connection switching means 59 is in a non-connected state. Since a positioning / torque limiter mechanism 71 is provided to rotate the operating knob 18 around the outer cylinder 17 when a rotational operating force is input to the operating knob 18 at that time, the positioning / torque limiter mechanism 71 causes the outer cylinder 17 and the operating knob 18 to move. The relative position can be set to a position where the connection switching means 59 can be connected, and at the time of inputting the rotational operation force due to the mischief to the operation knob 18 when the connection switching means 59 is in the non-connected state. The operation knob 18 is moved by the positioning / torque limiter mechanism 71. So as to idle around the coater cylinder 17, it is possible to prevent the steering lock mechanism 13 will unlock state undesirably.

  Note that after the operation knob 18 is idle due to mischief or the like, the operation knob 18 may be rotated to fit the protrusion 72 into the fitting recess 73. This can be confirmed by a change in rotational load and vibration.

  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.

  For example, although the case where the present invention is applied to a motorcycle has been described in the above embodiment, the present invention can be widely applied to vehicles including four-wheeled vehicles and ships in addition to motorcycles.

It is a front view of an antitheft device. FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1 in a state where an operation knob is in a LOCK position and a mechanical key is not inserted into a key hole. It is sectional drawing corresponding to FIG. 2 in the state which inserted the regular mechanical key in the key hole, and rotated the operation knob to the ON position. It is a disassembled perspective view of an antitheft device. FIG. 5 is a view taken in the direction of arrow 5 in FIG. 3 with the body cover removed. FIG. 6 is a sectional view taken along line 6-6 of FIG. FIG. 7 is a sectional view taken along line 7-7 in FIG. 3. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 3, where (a) shows the non-inserted state of the mechanical key with the operating knob in the OFF position, and (b) shows the operating knob in the ON position with the mechanical key inserted. FIG. FIG. 9 is a sectional view taken along line 9-9 in FIG. 2. FIG. 10 is a cross-sectional view corresponding to FIG. 9 with a regular mechanical key inserted.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Head pipe 13 which is support body ... Steering lock mechanism 15 which is anti-theft operation means ... Body 16 ... Inner cylinder 17 ... Outer cylinder 18 ... Operation knob 19 ... Key hole 20 ... Tumbler 51 ... Pin 52 ... First support hole 53 ... Second support hole 58 ... Mechanical key 59 ... Connection switching means 71 ... Positioning / torque limiter mechanism

Claims (3)

  A body (15) fixed to the support (11), an inner cylinder having a key hole (19) and being non-rotatably supported by the body (15) and mounted with a plurality of tumblers (20) (16) and an operation knob (18) arranged coaxially with the inner cylinder (16), and an anti-theft actuating means in accordance with insertion of a regular mechanical key (58) into the key hole (19). In the vehicle anti-theft device capable of rotating the operation knob (18) so as to transmit the rotating operation force to (13), the body is connected to the anti-theft actuating means (13) and connected to the body. When the regular mechanical key (58) is not inserted into the key hole (19), the tumbler (20) is attached to the outer cylinder (17). A state in which the outer cylinder (17) is prevented from rotating, and the tumbler (20) is engaged with the outer cylinder (17) when the regular mechanical key (58) is inserted into the key hole (19). The inner cylinder (16) is coaxially inserted so as to switch the state of allowing the outer cylinder (17) to rotate, and the normal mechanical key (58) is inserted into the key hole (19). Although the operation knob (18) and the outer cylinder (17) are connected so as not to be relatively rotatable at the time of insertion, the operation knob (18) and the operation knob (18) at the time of non-insertion of the regular mechanical key (58) into the key hole (19) The inner cylinder in which the connection switching means (59) for releasing the connection of the outer cylinder (17) interposes the outer cylinder (17). 16) and the operation knob (18), and the operation knob (18) covers the protrusion of the outer cylinder (17) from the body (15) and rotates relative to the outer cylinder (17). A vehicle antitheft device characterized by being movably supported.   One end of a pin (51) penetrating the side wall of the outer cylinder (17) so as to allow the outer cylinder (17) to rotate is close to the support (11) in the body (15). The second support hole (53) provided in the inner cylinder (16) is inserted into the first support hole (52) opened on the opposite side surface, and the other end of the pin (51) is inserted into the second support hole (53). The vehicle antitheft device according to claim 1.   The relative position of the outer cylinder (17) and the operation knob (18) is determined to be a position where the connection switching means (59) can be connected, and the connection switching means (59) is in a non-connected state. A positioning / torque limiter mechanism (71) that idles the operation knob (18) around the outer cylinder (17) when a rotational operating force is input to the operation knob (18) is provided to the outer cylinder (17) and the operation knob. (18) The vehicle antitheft device according to claim 1 or 2, wherein the antitheft device for vehicles is provided.

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