JP4213622B2 - Locking device - Google Patents

Description

  The present invention relates to a locking device having two types of unlocking / locking patterns such as a mechanical key and an electronic key.

  For example, a lock device that can use both a mechanical key and an electronic key has been conventionally known. A conventional example in which this type of locking device is applied to a steering lock device is shown in FIG. 6 (see Patent Document 1).

  In FIG. 6, the steering lock device 100 has a casing body 101, and a component housing chamber 101 a is formed in the casing body 101. The component housing chamber 101 a houses a cylinder lock 102, a rotator 103 connected to the cylinder lock 102, and an ignition switch 104 operated by the rotation of the rotator 103. An operation knob 105 is fixed to one end side of the cylinder lock 102, and the cylinder lock 102 can be pressed by this operation knob 105. The cylinder lock 102 is rotatably provided when a lock lever 112 of the solenoid unit 110 described below is in a rotation allowable position. The rotator 103 is provided with a cam portion 103a, and a cam shaft 106 is engaged with the cam portion 103a. When the cam portion 103a rotates, the camshaft 106 changes in the axial direction of the rotator 103 to release a steering lock (not shown) or prevent rotation.

  A solenoid unit 110 is attached to the outer surface of the casing body 101. The solenoid unit 110 includes a solenoid 111 and a lock lever 112 that is displaced by the solenoid 111. The lock lever 112 shifts between a rotation prevention position (position in FIG. 6) that engages with the rear end of the cylinder lock 102 to prevent the rotation of the cylinder lock 102 and a rotation allowable position that allows the rotation of the cylinder lock 102. Is done.

  The key insertion detection switch SW1 is disposed in the vicinity of the cylinder lock 102 and is turned on when the cylinder lock 102 is pressed in a state where an appropriate mechanical key (not shown) is inserted. The output information of the key insertion detection switch SW1 is output to the control unit 120. The knob operation detection switch SW2 is disposed in the vicinity of the distal end surface of the rotator 103 and is turned on when the operation knob 105 is pressed. The output information of the knob operation detection switch SW2 is output to the control unit 120.

  The control unit 120 can perform authentication confirmation communication with the electronic key 121 and controls driving of the solenoid 111 of the solenoid unit 110.

  In the above configuration, when the operator presses the operation knob 105 without inserting a mechanical key (not shown) into the cylinder lock 102, the cylinder lock 102 and the rotator 103 move in the axial direction and the knob operation detection switch SW2 is turned on. . When the knob operation detection switch SW2 is turned on, the control unit 120 communicates with the electronic key 121 to perform authentication confirmation. If the authentication can be confirmed, the control unit 120 turns on the solenoid 111, and the lock lever 112 is shifted to the rotation allowable position. Next, when the operator rotates the operation knob 105, the cylinder lock 102 and the rotator 103 are rotated, the ignition switch 104 is operated, and the camshaft 106 is displaced. As a result, the steering shaft (not shown) is unlocked and can freely rotate.

When the operator inserts a cylinder key (not shown) into the cylinder lock 102 and presses the operation knob 105, the key insertion detection switch SW1 is turned on. When the key insertion detection switch SW1 is turned on, the solenoid 111 is turned on by the control unit 120, and the lock lever 112 is shifted to the rotation allowable position. Next, when the operator rotates the operation knob 105, the cylinder lock 102 and the rotator 103 are rotated, the ignition switch 104 is operated, and the camshaft 106 is displaced. As a result, the steering shaft (not shown) is unlocked and can freely rotate.
JP 2003-34231 A

  By the way, in the steering lock device 100 which is such a locking device, besides the cylinder lock 102 itself being destroyed, there is a possibility of unauthorized key unlocking due to destruction of the solenoid unit 110. Here, since the conventional solenoid unit 110 is generally fixed to the casing body 101 with fastening parts such as bolts, the fastening parts such as bolts are broken, or the casing body 101 and the solenoid unit are broken. The solenoid unit 110 is removed from the casing body 101 by inserting a tool into the gap 110 and prying it open. Then, by pulling the solenoid unit 110 away from the casing body 101, the lock lever 112 can be moved to a position other than the rotation restricting position, so that the rotator 103 can be rotated and unlocked.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a locking device that has a second operation restriction unit attached to the outer surface of a casing body and has excellent anti-theft performance.

  According to a first aspect of the present invention for achieving the above object, a lock body and a motion transmitting member connected to the lock body are housed in a component housing chamber of the casing body, and a second operation restriction unit is attached to the outer surface of the casing body. The second operation restricting unit is engaged between a movement preventing position for preventing movement of the lock body and the motion transmitting member and a movement allowing position for allowing movement of the lock body and the motion transmitting member. Only when the first operation is performed under proper conditions, the second operation restricting unit moves the engagement portion from the blocking position to the allowable position to move the lock body and the motion transmitting member. Is provided, and the unit housing of the second operation restricting unit is provided with a separation preventing block portion protruding into the component housing chamber and having a through hole, and the motion transmitting portion. There is characterized in that housed in the component housing chamber in a state of penetrating into the through hole.

  Invention of Claim 2 is a locking device of Claim 1, Comprising: Between the opening position of the said component storage chamber in which the said lock main body is inserted, and the said engaging part, it protrudes in the said component storage chamber, An intrusion prevention block portion for preventing intrusion of unauthorized unlocking tools is provided.

  The invention of claim 3 is the locking device according to claim 2, wherein the intrusion prevention block portion is provided in at least one of the second operation restriction unit and the motion transmission member. .

  A fourth aspect of the present invention is the locking device according to the second aspect, wherein the intrusion prevention block portion is the separation prevention block portion of the second operation restriction unit.

  The invention of claim 5 is the lock device according to claims 1 to 4, wherein the lock body has a substantially cylindrical shape, and the movement by the first operation is movement of the lock body in the axial direction. The movement by the second operation is a rotation of the lock body in the circumferential direction.

  According to the first aspect of the present invention, the second operation restriction unit is removed from the casing body by removing the fastening parts such as bolts or by prying open the tool by inserting the tool into the gap between the casing body and the second operation restriction unit. Even if the second operation restricting unit is to be separated from the casing body, the motion transmitting member passes through the through hole of the separation preventing block portion of the unit housing. For this reason, the engaging portion cannot be moved to a position other than the movement preventing position without separating the second operation restricting unit from the casing body. As described above, the second operation restriction unit is attached to the outer surface of the casing body, and is excellent in the anti-theft performance.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, even if a long and narrow unauthorized unlocking tool is inserted from the opening side of the component storage chamber, the tool can be inserted deeper than the position of the intrusion prevention block portion. Therefore, the engaging portion located behind the intrusion prevention block portion cannot be operated. Accordingly, it is possible to prevent unauthorized unlocking using the gap in the component storage chamber.

  According to the invention of claim 3, the same effect as that of the invention of claim 2 can be obtained.

  According to the invention of claim 4, in addition to the effect of the invention of claim 2, unauthorized key release due to destruction of the second operation restricting unit and unauthorized key release using a gap in the component housing chamber are prevented with a simple configuration. it can.

  According to the invention of claim 5, in addition to the effects of the inventions of claims 1 to 4, the lock body has a substantially cylindrical shape, the moving direction of the first operation is the axial direction of the lock body, and the second Since the movement direction of the operation is the circumferential direction of the lock body, it is possible to improve the operability while reducing the size of the entire lock device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 to 3 show a first embodiment in which the locking device of the present invention is applied to a steering lock device, FIG. 1 is an exploded perspective view of the steering lock device, FIG. 2 is an overall sectional view of the steering lock device, and FIG. It is the sectional view on the AA line of FIG.

  As shown in FIGS. 1 and 2, the steering lock device 1 </ b> A has a casing main body 2 assembled around a steering shaft (not shown) provided in the vehicle, and the casing main body 2 has an axial direction along the casing. A component storage chamber 2a is formed. In the component storage chamber 2a, a cap 3, a housing case 4, a cylinder lock 5 as a lock body, a rotator 7 as a motion transmission member, a hanger rod 8, one end side of an engagement rod 9, an ignition switch 10, and the like are accommodated. Has been.

  The cap 3 is interposed in a space formed between the inner peripheral surface of the casing main body 2 and the outer peripheral surface of the housing case 4 at a peripheral position of the opening position of the component housing chamber 2 a of the casing main body 2.

  The housing case 4 is fixed to the casing body 2 with pins 11 and the like, and a cylinder housing chamber 12 which is a lock body housing chamber is provided inside.

  The cylinder lock 5 has a substantially cylindrical shape and is accommodated in the cylinder accommodating chamber 12. A keyhole 14 is formed in the axial center position of the cylinder lock 5 along the axial direction. One end side of the cylinder lock 5 protrudes outward from the casing body 2, and an operation knob 15 is fixed to the protruding portion. A keyhole inlet 16 communicating with the keyhole 14 is formed in the operation knob 15. A cylinder key (not shown) as a mechanical key can be inserted into the key hole 14 through the key hole inlet 16 of the operation knob 15. The cylinder lock 5 can be moved in the axial direction with respect to the housing case 4 by a pressing operation which is a first operation, and is a rotation which is a second operation on condition that a lock lever 20a described below is positioned at a lock release position. It is provided so as to be rotatable about the axis with respect to the housing case 4 by operation.

  The rotator 7 is rotatably supported with respect to the casing body 2 and has one end connected to the cylinder lock 5 and the other end connected to the hanger rod 8. The connection between the rotator 7 and the cylinder lock 5 is such that the movement of the cylinder lock 5 in the axial direction A is not transmitted but only the rotation is transmitted. A return spring 17 is interposed between the rotator 7 and the cylinder lock 5, and the cylinder lock 5 is biased toward the initial position by the spring force of the return spring 17. The connection between the rotator 7 and the hanger rod 8 is configured such that the hanger rod 8 changes in the vertical direction by the rotation of the rotator 7. One end of an engagement rod 9 is connected to the hanger rod 8, and the other end side of the engagement rod 9 is provided to be able to engage and disengage from a steering shaft (not shown). That is, the engagement rod 9 moves between an engagement position that engages with a steering shaft (not shown) and an engagement release position according to the rotational position of the rotator 7. A spring 19 is interposed between the hanger rod 8 and the lid 18, and the engagement rod 9 is biased toward the engagement position by the spring force of the spring 19.

  The rotator 7 is provided with a semicircular disk-shaped rotation restricting plate 7a, and two intrusion prevention block portions 20 projecting in the outer circumferential direction are provided at two positions on the cylinder lock 5 side from the rotation restricting plate 7a. Has been. The outer peripheral end surface of the intrusion prevention block 20 is located at a position close to the inner peripheral surface of the component housing chamber 2 a of the casing body 2.

  Further, a switch unit 21 and a solenoid unit 22 as a second operation restriction unit are fixed to the outer peripheral surface of the casing body 2.

  The switch unit 21 includes a key insertion detection switch SW1 and a knob operation detection switch SW2. The key insertion detection switch SW1 is configured to be turned on when a cylinder key (not shown) is completely inserted into the key hole 14 of the cylinder lock 5. The knob operation detection switch SW2 is configured to be turned on when the cylinder lock 5 is displaced in the axial direction by a pressing operation of the operation knob 15. Detection information of the key insertion detection switch SW1 and the knob operation detection switch SW2 is output to a control unit (not shown).

  The solenoid unit 22 includes a unit housing 23, a solenoid 24 accommodated in the unit housing 23, and a lock lever 25 that is an engagement portion that changes depending on on / off of current to the solenoid 24. The unit housing 23 is attached to the casing body 2 by bolts 26. The lock lever 25 protrudes from the opening 27 of the casing body 2 into the component housing chamber 2a. When the solenoid 24 is turned on, the lock lever 25 is at a rotation allowable position (solid line position in FIG. 2) that is a movement allowable position outside the rotation locus of the rotation restriction plate 7a. When turned off, the rotation restricting plate 7a is shifted to a rotation prevention position (a virtual line position in FIG. 2) which is a movement prevention position in the rotation locus. The solenoid 24 is driven based on a control signal from a control unit (not shown). When the key insertion detection switch SW1 and the knob operation detection switch SW2 are both turned on, and when the key insertion detection switch SW1 is off, the knob operation detection switch SW2 is on, Control is performed so that the solenoid 24 is turned on for a predetermined time when the ID authentication is confirmed by communication with (not shown).

  As shown in FIGS. 2 and 3, the unit housing 23 is integrally provided with a separation preventing block 30. The separation preventing block 30 protrudes from the opening 27 of the casing body 2 into the component housing chamber 2a. A through hole 30a is formed in the separation preventing block 30, and the rotator 7 is accommodated in the component accommodating chamber 2a while being penetrated into the through hole 30a. Further, the separation preventing block 30 projects into the component storage chamber 2a at a position between the opening position of the component storage chamber 2a into which the cylinder lock 5 is inserted and the lock lever 25, and the opening of the component storage chamber 2a. It also serves as an intrusion prevention block that prevents intrusion of unauthorized unlocking tools (not shown) inserted from the side.

  The operation of the steering lock device 1A will be described.

  In the initial state of FIG. 2, both the key insertion detection switch SW1 and the knob operation detection switch SW2 are off, and the lock lever 25 of the solenoid 24 is located at the rotation prevention position (the phantom line position in FIG. 2). The engagement rod 9 is positioned at an engagement position of a steering shaft (not shown), and the steering (not shown) is locked. In this initial state, the cylinder lock 5 cannot be rotated even if the operator applies a rotational force to the operation knob 15 to rotate the cylinder lock 5.

  In the initial state, when the operator presses the operation knob 15 without inserting a cylinder key (not shown) into the keyhole 14 (first operation), the cylinder lock 5 moves in the axial direction A in the housing case 4. Then, the operation knob 15 is pressed. In this movement, the key insertion detection switch SW1 maintains the off position, but the knob operation detection switch SW2 changes from the off position to the on position. When the knob operation detection switch SW2 is turned on, the control unit (not shown) communicates with an electronic key (not shown) to perform ID authentication, and when the ID match is confirmed (the first operation has appropriate conditions), the electronic unit Move to key operation mode. And a control part (not shown) controls the solenoid 24 to an ON state, and the lock lever 25 is changed to a rotation permissible position (solid line position of FIG. 2).

  When the operator rotates the operation knob 15 (second operation) following the pressing operation (first operation) described above, the cylinder lock 5 is rotated in the circumferential direction by the rotational force. The rotation of the cylinder lock 5 rotates the rotator 7, and the engagement rod 9 is shifted to the unlocking position. As a result, a steering shaft (not shown) can freely rotate.

  In the initial state, when the operator inserts a cylinder key (not shown) into the key hole 14 and presses the operation knob 15 (first operation), the cylinder lock 5 moves in the housing case 4 in the axial direction A. The operation knob 15 is pressed by moving. By inserting a cylinder key (not shown) into the keyhole 14, the key insertion detection switch SW1 is changed from the off position to the on position. As the cylinder lock 5 moves in the axial direction A, the knob operation detection switch SW2 changes from the off position to the on position. When the key insertion detection switch SW1 and the knob operation detection switch SW2 are both turned on (the first operation has appropriate conditions), the mode shifts to the auxiliary operation mode. And a control part (not shown) controls the solenoid 24 to an ON state, and the lock lever 25 is changed to a rotation permissible position (solid line position of FIG. 2).

  When the operator rotates the operation knob 15 (second operation) following the pressing operation (first operation) described above, the cylinder lock 5 is rotated in the circumferential direction by the rotational force. The rotation of the cylinder lock 5 rotates the rotator 7, and the engagement rod 9 is shifted to the unlocking position. As a result, a steering shaft (not shown) can freely rotate.

  By the way, when the solenoid unit 22 is removed from the casing main body 2 and illegally released, the bolt 26 is broken, or a tool is inserted into the gap between the casing main body 2 and the unit housing 23 of the solenoid unit 22 to open the solenoid. The unit 22 is removed from the casing body 2. Even if the removed solenoid unit 22 is to be separated from the casing body 2, the solenoid unit 22 cannot be separated from the casing body 2 because the rotator 7 passes through the through hole 30 a of the separation preventing block 30 of the unit housing 23. Therefore, the lock lever 25 maintains the rotation prevention position, and the rotator 7 cannot be rotated. As described above, the solenoid unit 22 is attached to the outer surface of the casing body 2 and is excellent in the anti-theft performance.

  In the first embodiment, an intrusion prevention block 20 that protrudes into the component storage chamber 2a is provided between the opening position of the component storage chamber 2a into which the cylinder lock 5 is inserted and the lock lever 25. Even if the cap 3 is removed and a long and narrow unauthorized release tool is inserted from the opening side of the component storage chamber 2a, it cannot be penetrated from the position of the intrusion prevention block 20 of the rotator 7. In the first embodiment, even if the intrusion prevention block portion 20 of the rotator 7 is destroyed, it cannot be penetrated deeper than the position of the separation prevention block portion 30. As described above, the lock lever 25 located behind the intrusion prevention block unit 20 and the separation prevention block unit 30 cannot be operated. As described above, in the first embodiment, it is possible to prevent both the unauthorized key release due to the destruction of the solenoid unit 22 and the unauthorized key release using the gap of the component storage chamber 2a. In addition, since the separation preventing block portion 30 also serves as an intrusion preventing block portion, it is possible to prevent unauthorized key release due to destruction of the solenoid unit 22 and unauthorized key release using the gap in the component storage chamber 2a with a simple configuration. it can.

  In the first embodiment, the cylinder lock 5 has a substantially cylindrical shape, the movement by the first operation is movement in the axial direction A of the cylinder lock 5, and the movement by the second operation is in the circumferential direction of the cylinder lock 5. Since it is rotation, the operability can be improved while downsizing the entire locking device.

  4 and 5 show a second embodiment in which the locking device of the present invention is applied to a steering lock device, FIG. 4 is an overall cross-sectional view of the steering lock device, and FIG. 5 (a) is a cross-sectional view taken along line BB in FIG. FIG. 5B is a cross-sectional view taken along the line CC of FIG.

  The steering lock device 1B according to the second embodiment is different from the steering lock device 1A according to the first embodiment only in the configuration of the unit housing 23 of the solenoid unit 22.

  That is, as shown in FIG. 4 and FIGS. 5A and 5B, the separation preventing block 30 of the unit housing 23 is disposed at a deeper position than the lock lever 25 with respect to the opening position of the component housing chamber 2a. Yes. Since the structure of the separation preventing block 30 is the same as that of the first embodiment, description thereof is omitted.

  In the unit housing 23, an intrusion prevention block portion 31 is provided integrally with the separation prevention block portion 30. The intrusion prevention block 31 protrudes into the component storage chamber 2a from the opening 27 of the casing body 2 at a position between the opening position of the component storage chamber 2a into which the cylinder lock 5 is inserted and the lock lever 25. . The front end surface of the intrusion prevention block portion 31 is formed as an arc surface, and this arc surface is disposed close to the outer peripheral surface of the rotator 7.

  Since other configurations are the same as those of the first embodiment, the description thereof is omitted to avoid redundant description. 4 and 5A and 5B, the same reference numerals are given to the same components for clarification.

  Also in the second embodiment, similarly to the first embodiment, the solenoid 26 is broken by breaking the bolts 26 or by inserting a tool into the gap between the casing body 2 and the unit housing 23 of the solenoid unit 22 to pry it open. Since the rotator 7 passes through the through-hole 30a of the separation preventing block 30 of the unit housing 23 even if the solenoid unit 22 removed from the casing body 2 is to be separated from the casing body 2, the solenoid unit 22 is inserted into the casing body 2. It cannot be pulled apart. Therefore, the lock lever 25 maintains the rotation prevention position, and the rotator 7 cannot be rotated. As described above, the solenoid unit 22 is attached to the outer surface of the casing body 2 and is excellent in the anti-theft performance.

  In the second embodiment, the separation preventing block 30 is provided on the unit housing 23 of the solenoid unit 22, and the intrusion prevention blocks 20 and 31 are provided on both the rotator 7 and the solenoid unit 22. Therefore, similarly to the first embodiment, it is possible to prevent both the unauthorized key release due to the destruction of the solenoid unit 22 and the unauthorized key release using the gap of the component storage chamber 2a.

  In each of the embodiments described above, the second operation restriction unit is configured by the solenoid unit 22, but it is needless to say that it may be configured by a unit using a drive source other than the solenoid 24.

  In each of the above embodiments, the intrusion prevention block portions 20, 30, and 31 are provided in both the rotator 7 and the solenoid unit 22, but they may be provided only in any one of them. However, if the intrusion prevention block portions 20, 30, and 31 are provided in an overlapping arrangement on both members as in the above embodiments, high antitheft performance can be exhibited.

  In each of the above embodiments, the moving direction of the second operation is the circumferential direction of the cylinder lock 5, but the direction in which the cylinder lock 5 slides so that the moving direction is orthogonal to the moving direction of the first operation on the same plane. However, the same effect can be obtained.

  In each of the above-described embodiments, the cylinder lock 5 is used as the auxiliary lock portion. However, the same effect can be obtained even when the immobilizer system lock is used.

  In the above embodiment, the locking device of the present invention is applied to a steering lock device for a vehicle. However, the locking device can also be applied to a door locking device for a house.

1 is an exploded perspective view of a steering lock device according to a first embodiment of the present invention. 1 is a cross-sectional view of an entire steering lock device according to a first embodiment of the present invention. FIG. 3 shows the first embodiment of the present invention and is a cross-sectional view taken along line AA in FIG. 2. FIG. 2 is a cross-sectional view of the entire steering lock device according to a second embodiment of the present invention. FIG. 5 shows a second embodiment of the present invention, in which (a) is a cross-sectional view taken along the line BB of FIG. It is whole sectional drawing of the steering lock apparatus of a prior art example.

Explanation of symbols

1A, 1B Steering lock device (lock device)
2 Casing body 2a Parts storage chamber 5 Cylinder lock (lock body)
7 Rotator (motion transmission member)
20 Intrusion prevention block 22 Solenoid unit (second operation restriction unit)
23 Unit housing 25 Lock lever (engaging part)
30 Pull-off prevention block (intrusion prevention block)
30a Through hole 31 Intrusion prevention block

Claims (5)

A lock body and a motion transmission member connected to the lock body are accommodated in a component housing chamber of the casing body, and a second operation restriction unit is attached to the outer surface of the casing body. And an engaging portion that shifts between a movement preventing position that prevents movement of the motion transmitting member by a second operation and a movement allowable position that allows movement of the lock body and the motion transmitting member by a second operation. Only when the first operation is performed under proper conditions, the second operation restricting unit shifts the engagement portion from the blocking position to the allowable position, and the lock body and the movement transmitting member are moved by the second operation. Is an acceptable locking device,
The unit housing of the second operation restricting unit is provided with a separation preventing block portion that protrudes into the component accommodating chamber and has a through hole, and is accommodated in the component accommodating chamber in a state in which the motion transmission member penetrates the through hole. A locking device characterized by that. The locking device according to claim 1,
Between the opening position of the component storage chamber into which the lock body is inserted and the engaging portion, an intrusion prevention block portion that protrudes into the component storage chamber and prevents entry of unauthorized unlocking tools is provided. A locking device characterized by. The locking device according to claim 2,
The lock device according to claim 1, wherein the intrusion prevention block portion is provided in at least one of the second operation restriction unit and the motion transmission member. The locking device according to claim 2,
The lock device according to claim 1, wherein the intrusion prevention block portion is the separation prevention block portion of the second operation restriction unit. A locking device according to claims 1 to 4,
The lock body has a substantially cylindrical shape, and the movement by the first operation is an axial movement of the lock body, and the movement by the second operation is a rotation of the lock body in the circumferential direction. Locking device.

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