JP4418298B2 - Locking device - Google Patents

Description

  The present invention relates to a lock device in which a lock body and a cam mechanism are accommodated in a casing body.

  FIG. 5 shows a conventional example in which this type of lock device is applied to a steering lock device (see Patent Document 1).

  In FIG. 5, 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 storage chamber 101 a includes a cylinder lock 102, a cam member 103 connected to the cylinder lock 102, a slider 104 as a cam follower member connected to the cam member 103, and a lock member connected to the slider 104. The one end side of 105 and the spring 106 which urges the slider 104 to the lock position side are accommodated. A cam mechanism is configured by the cam member 103 and the slider 104, and the rotation of the cylinder lock 102 is converted into a linear motion by the cam mechanism and transmitted to the lock member 105.

  Further, the casing body 101 is provided with an opening 107 of the component housing chamber 101 a at a position facing the cam member 103 and the slider 104. The opening 107 is closed by a lid 108, and the other end side of the spring 106 is hung on the lid 108. The lid 108 is fixed to the casing body 101 by pins 110 and is also fixed by a caulking portion 111 of the casing body 101.

That is, the lid 108 is fixed to the casing body 101 by the pin 110 and the caulking portion 111, thereby preventing unauthorized key unlocking by operating the slider 104 of the cam mechanism from the opening 107.
Japanese Utility Model Publication No. 5-44209

  However, in the steering lock device 100 which is a conventional locking device, in order to attach the lid 108 to the casing body 101, the pin 110 is fitted into a pin press-fitting hole (not shown), and the outer peripheral edge of the opening 107 of the casing body 101. Since it is necessary to create the crimping part 111 by crimping the part, the work of preventing theft is troublesome.

  Therefore, an object of the present invention is to provide a lock device that is not troublesome for theft prevention, can prevent unauthorized key release using the opening of the casing body, and is excellent in theft prevention.

The invention according to claim 1, which achieves the above object, houses a lock body and a lock member that shifts between a lock position and an unlock position by the movement of the lock body in a component housing chamber of the casing body, and the casing body. Is provided with an opening of the component housing chamber and a unit attached to the outer surface of the casing body, and the unit is inserted into the component housing chamber from an opening different from the opening. A projecting through-hole through which a component disposed in the component housing chamber and a shielding portion that is disposed outside the opening and shields the opening are integrally provided. Yes.

  A second aspect of the present invention is the locking device according to the first aspect, wherein a lid for closing the opening is attached to the casing body via a lid fixing means so as to cover an outer position of the lid. The shielding portion is arranged.

  The invention of claim 3 is the locking device according to claim 1, wherein the shielding portion directly covers the opening, and the shielding portion is fixed to the casing body via a fixing means. Features.

  A fourth aspect of the present invention is the locking device according to the first aspect, wherein a lid for closing the opening is attached to the casing body via a lid fixing means so as to cover an outer position of the lid. The shielding portion is disposed, and a fitting portion is provided in the shielding portion and the casing main body, and the fitting portion is installed at a position to hide the lid fixing means.

  A fifth aspect of the present invention is the locking device according to any one of the first to fourth aspects, wherein a cam mechanism that converts the displacement of the cylinder lock into a predetermined motion and transmits it to the lock member is provided in the component housing chamber. The opening is provided at a position where the cam mechanism is accommodated.

  The invention according to claim 6 is the locking device according to any one of claims 1 to 5, wherein the unit is based on a movement preventing position for preventing movement of the lock body by a second operation and a second operation of the lock body. An engaging portion that shifts between a movement-permitted position that allows movement, and the engagement portion is moved from the movement-preventing position to the movement-permitted position only when the first operation is performed under appropriate conditions. It is a 2 operation control unit.

According to the first aspect of the present invention, when the unit is attached by a normal operation, the shielding portion of the unit shields the outside position of the opening of the casing body, so that it is not necessary to separately perform a troublesome operation for theft prevention. . Since the internal components cannot be operated from the opening unless the unit is forcibly removed from the casing body, unauthorized key release using the opening of the casing body can be prevented, and the anti-theft performance is excellent.
In addition, even if you remove the unit from the casing body and try to separate the detached unit from the casing body, the parts cannot penetrate from the casing body because the parts penetrate the through hole of the unit, so the anti-theft performance is further improved. Are better.

  According to the invention of claim 2, in addition to the effect of the invention of claim 1, it is necessary to forcibly remove both the shielding part and the lid of the unit in order to perform the unauthorized key release using the opening of the casing body. Therefore, the anti-theft property can be improved.

  According to the invention of claim 3, in addition to the effect of the invention of claim 1, since the lid can be deleted, the number of parts is reduced.

  According to the invention of claim 4, in addition to the effect of the invention of claim 1, it is necessary to forcibly remove both the lid and the shielding part of the unit in order to perform unauthorized key release using the opening of the casing body. In addition, since the shielding part and the lid are fitted by the fitting part and the lid fixing means is shielded by the fitting part, the antitheft can be further improved.

  According to the fifth aspect of the present invention, it is possible to prevent unauthorized key release by operating the cam mechanism using the opening.

  According to the invention of claim 6, the lock body is set to the unlocked position by the first operation and the second operation, and the same effects as those of the inventions of claims 1 to 5 are obtained.

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

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

  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 extends along the axial direction. A component storage chamber 2a is formed. In the component housing chamber 2a, a cap 3, a housing case 4, a cylinder lock 5 as a lock body, a rotator 7 having a cam portion 7b at the other end, a hanger rod 8 as a cam follow-up member, and an engagement as a lock member One end side of the rod 9, an ignition switch 10 and the like are accommodated.

  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 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 one end side thereof is connected to the cylinder lock 5. 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.

  A cam portion 7b is integrally provided on the other end side of the rotator 7, and the cam portion 7b is connected to a hanger rod 8 that is a cam follow-up member. That is, the cam mechanism CM is configured by the cam portion 7b and the hanger rod 8 of the rotator 7, and the rotation of the rotator 7 is converted into a linear motion by the cam mechanism CM and transmitted to the engagement rod 9. 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 a lock position and a lock release position that engage with a steering shaft (not shown) according to the rotational position of the rotator 7. One end of a spring 19 is hung on the hanger rod 8, and the engagement rod 9 is biased toward the engagement position by this spring force.

  Moreover, the opening part 40 of the components storage chamber 2a is formed in the position which the hanger rod 8 of the casing main body 2 faces. The opening 40 is closed by a lid 18 fixed to the casing body 2 by a fixing pin 41 which is a lid fixing means. Then, the other end side of the spring 19 is hung on the lid 18.

  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 locations on the cylinder lock 5 side from the rotation restricting plate 7a. Has been. The outer peripheral end surface of the intrusion prevention block portion 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 (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).

  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. Intrusion of unauthorized unlocking tools (not shown) inserted from the side is also prevented.

  Further, the unit housing 23 is integrally provided with a shielding portion 31. The shielding portion 31 is disposed outside the opening 40 of the casing body 2 and shields the opening 40 from the upper position of the lid 18.

  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 (first operation) without inserting a cylinder key (not shown) into the keyhole 14, 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. When the ID match is confirmed, the control unit shifts to an electronic 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 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.

  In the steering lock device 1A, when the solenoid unit 22 is attached to the casing body 2 by a normal bolting operation, the shielding portion 31 of the solenoid unit 22 shields the outer position of the opening 40 of the casing body 2, There is no need to perform troublesome work to prevent theft. In order to perform the unauthorized key unlocking using the opening 40, first, the solenoid unit 22 must be forcibly removed from the casing body 2, so the opening 40 facing the cam mechanism CM of the casing body 2 is used. It is possible to prevent unauthorized key release and has excellent anti-theft performance.

  In particular, in the first embodiment, if the lid 18 is not forcibly removed together with the solenoid unit 22, the unauthorized key cannot be unlocked using the opening 40 facing the cam mechanism CM of the casing body 2. The prevention can be improved.

  Further, since the solenoid unit 22 is removed from the casing body 2 and the removed solenoid unit 22 is separated from the casing body 2, the rotator 7 passes through the through hole 30 a of the separation preventing block portion 30 of the unit housing 23. The unit 22 cannot be separated from the casing body 2. As described above, the anti-theft performance is very good.

  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.

  FIG. 3 shows a second embodiment in which the locking device of the present invention is applied to a steering lock device, and FIG. 3 is an overall sectional view of the steering lock device.

  Compared with the steering lock device 1A of the first embodiment, the steering lock device 1B of the second embodiment has the opening 40 of the casing body 2 directly covered by the shielding portion 31 of the solenoid unit 22 instead of the lid. It is. Then, the other end side of the spring 19 is hung on the inner surface of the shielding portion 31. The shield 31 is fixed to the casing body 2 by a fixing pin 42 that is a fixing means.

  Since other configurations are the same as those of the first embodiment, the description thereof is omitted to avoid redundant description. In FIG. 3, the same components are denoted by the same reference numerals for clarification.

  Also in the second embodiment, similarly to the first embodiment, when the solenoid unit 22 is attached by a normal operation, the shielding part 31 of the solenoid unit 22 shields the outer position of the opening 40 of the casing body 2. This eliminates the need for troublesome work to prevent theft. In addition, since the lid 18 can be deleted, the number of parts is reduced.

  In this second embodiment, the fixing means for fixing the shielding part 31 to the casing body 2 is the fixing pin 42, but any means that can fix the shielding part 31 to the casing body 2 may be used. good.

  FIG. 4 shows a third embodiment in which the locking device of the present invention is applied to a steering lock device, and FIG. 4 is an overall sectional view of the steering lock device.

  In the steering lock device 1C of the third embodiment, compared with the steering lock device 1A of the first embodiment, the casing main body 2 is fitted with one side having a recess as a surface into which the fixing pin 41 of the lid 18 is inserted. The fitting recessed part 43 which is a part is provided. The shield 31 of the solenoid unit 22 is provided with a fitting projection 44 which is the other fitting portion, and the fitting projection 44 is fitted into the fitting recess 43 by fitting. The fixing pin 41 is shielded by the fitting protrusion 44.

  Since other configurations are the same as those of the first embodiment, the description thereof is omitted to avoid redundant description. In FIG. 4, the same components are denoted by the same reference numerals for clarification.

  Also in the third embodiment, similarly to the first embodiment, when the solenoid unit 22 is attached by a normal operation with the fitting protrusion 44 of the shielding portion 31 fitted in the fitting recess 43, the solenoid Since the shielding part 31 of the unit 22 shields the outside position of the opening part 40 of the casing body 2, it is not necessary to separately perform a troublesome work for preventing theft. In addition, since the shielding portion 31 and the lid 18 are fitted by the fitting recess 43 and the fitting projection 44 and the fixing pin 41 is shielded by the fitting recess 43 and the fitting projection 44, the shielding portion 31. It is very difficult to remove the lid 18, and the antitheft can be further improved.

  In each of the above embodiments, the cam housing CM that converts the change of the cylinder lock 5 into a predetermined motion and transmits it to the lock member 9 is housed in the component housing chamber 2a, and the opening 40 is provided at a position facing the cam mechanism CM. However, the present invention can be similarly applied even when the opening 40 is provided at other positions.

  In each of the above embodiments, the second operation restricting unit, which is a 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 embodiments described above, the lid fixing means is the fixing pin 41. However, it is sufficient that the lid 18 can be fixed to the casing body 2, for example, a caulking portion.

  In each of the above embodiments, the present invention is applied to the steering lock devices 1A, 1B, and 1C that can be released by two types of keys, that is, a cylinder key that is a mechanical key and an electronic key. Of course, it can be applied to.

  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. 2 is a cross-sectional view of the entire steering lock device according to a second embodiment of the present invention. FIG. 6 is a general sectional view of a steering lock device according to a third embodiment of the present invention. It is a partially broken side view of the steering lock device of the conventional example.

Explanation of symbols

1A, 1B, 1C Steering lock device (lock device)
2 Casing body 2a Parts storage chamber 5 Cylinder lock (lock body)
7b Cam part (cam mechanism)
8 Hanger rod (cam mechanism)
9 Engagement rod (locking member)
18 Lid 22 Solenoid unit (unit, second operation restriction unit)
25 Lock lever (engaging part)
31 shielding part 40 opening part 41 fixing pin (pin fixing means)
42 Fixing pin (fixing means)
43 Fitting recess (fitting part)
44 Fitting protrusion (fitting part)
CM cam mechanism

Claims (6)

A lock main body and a lock member that shifts between a lock position and an unlock position by movement of the lock main body are accommodated in a component accommodating chamber of the casing main body, and an opening of the component accommodating chamber is provided in the casing main body. , A locking device having a unit attached to the outer surface of the casing body,
The unit includes
A through-hole projecting into the component housing chamber from another opening different from the opening, and through which a component disposed in the component housing chamber passes,
A shielding part that is disposed outside the opening and shields the opening ;
A locking device characterized in that is integrally provided. The locking device according to claim 1,
A locking device characterized in that a lid for closing the opening is attached to the casing body via a lid fixing means, and the shielding portion is disposed so as to cover an outer position of the lid. The locking device according to claim 1,
The locking device characterized in that the shielding portion directly covers the opening, and the shielding portion is fixed to the casing body via a fixing means. The locking device according to claim 1,
A lid that closes the opening is attached to the casing body via a lid fixing means, the shielding portion is disposed so as to cover an outer position of the lid, and the shielding portion and the casing body are disposed on the casing body. A locking device characterized in that a fitting portion is provided, and the fitting portion is installed at a position to hide the lid fixing means. A locking device according to claims 1 to 4,
A cam mechanism that converts the change of the cylinder lock into a predetermined motion and transmits it to the lock member is housed in the component housing chamber, and the opening is provided at a position facing the cam mechanism. Locking device. The locking device according to claim 1, wherein
The unit includes an engaging portion that shifts between a movement preventing position that prevents movement of the lock body by a second operation and a movement allowable position that allows movement of the lock body by the second operation. A locking device that is a second operation restricting unit that shifts the engaging portion from a movement-preventing position to a movement-permitted position only when an operation is performed under appropriate conditions.

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