JP6076188B2 - Steering lock device - Google Patents

Description

  The present invention relates to a steering lock device for a vehicle provided with an ignition switch.

As a steering lock device for a vehicle, the following configuration is widely known. (First conventional example)
A cylindrical holder is fixed near the front of the hollow body, and a cylindrical key cylinder that can be rotated by inserting a key is provided in the holder.
A cam shaft that rotates integrally with the key cylinder is extended between the middle and rear of the body, and a cam provided on the cam shaft serves as a rotation shaft for the key cylinder. The lock bolt that operates orthogonally is moved forward and backward.

Therefore, the lock bolt moves forward and backward in accordance with the rotation of the key cylinder, engages and disengages with the concave groove of the steering shaft, and locks or unlocks the rotation of the steering shaft.
An ignition switch is provided at the rear end of the body.
The ignition switch is an engine start switch that performs a switch operation by transmitting the turning force of the key cylinder through the camshaft.

On the other hand, the steering lock device according to the first conventional example is disposed on the lower surface side of the steering shaft extending in the front-rear direction of the vehicle.
That is, the driver is not disposed on the upper surface side of the steering shaft so that the driver can easily see the meter and the like through the steering wheel.
However, when the steering lock device is arranged on the lower surface side of the steering shaft, the driver's knee or the like may hit the steering lock device and be damaged when the vehicle collides. It is necessary to provide a safety countermeasure structure against such an injury, which is a factor that increases costs.

Therefore, in order to solve the above-described injury problem, a steering lock device has been proposed in which an ignition switch is arranged on one side of the steering shaft. (Second conventional example)
That is, this steering lock device has a cylinder outer fixed to the front of the body, a key cylinder that can be moved by inserting a key in the cylinder outer is provided, and the rear end of the body is integrated with the key cylinder. And a steer lock mechanism that moves forward and backward along the rotational axis direction of the key cylinder by the cam, moves forward and backward by being driven by the rod, and locks or unlocks the steering shaft. An ignition switch is provided on the rear side of the body.

Since the steering lock device of the second conventional example configured as described above is arranged on one side of the steering shaft, the driver's knee or the like does not hit the steering lock device even when the vehicle collides.
Therefore, it becomes a steering lock device which does not need to provide the above-mentioned safety measures structure against injury.

Japanese Patent Laid-Open No. 7-32773 JP 2006-111124 A

The above-described steering lock device of the second conventional example can prevent a collision such as a driver's knee, which may occur when a vehicle collides, but has another problem as follows.
That is, around the steering shaft, a column adjustment device having a tilt mechanism for adjusting the vertical position of the steering wheel according to the physique and driving posture of the driver and a telescopic mechanism for adjusting the front and back position thereof is arranged. Further, a combination switch device for operating a direction indicator, a wiper, a light and the like is further arranged on the steering handle side of the column adjusting device.

  Since the steering lock device is mounted between the column adjustment device and the combination switch device, when the distance between the column adjustment device and the combination switch device is close and the space is small, the steering lock device is arranged in the axial direction of the steering shaft. In some cases, the steering lock device of the second conventional example having a large width of the device main body cannot be mounted.

In addition, when a driver's body collides with the steering wheel due to an accident or the like, there is an impact absorption type steering device in which the steering wheel is displaced forward in order to reduce the impact applied to the body.
This includes a first steering column equipped with a steering wheel, a combination switch device, and the like, and a second steering column equipped with a column adjusting device, etc., and the first steering column and the second steering column are relative to each other upon impact. The steering wheel is configured to displace to the front side by moving automatically.

  In this device, in order to sufficiently protect the driver in the event of an impact, the collapse stroke (the distance between the combination switch device and the column adjustment device), which is the length that the steering wheel can be displaced forward, is made as long as possible. If it is necessary, but the steering lock device mounted between the combination switch device and the column adjusting device requires a large arrangement space as in the second conventional example, the steering wheel and the combination switch The movement amount of the device is restricted, and the collapse stroke cannot be lengthened.

  Therefore, an object of the present invention is to propose a steering lock device that can ensure the safety of the driver at the time of a vehicle collision and can be mounted even in a small space around the steering shaft.

  In order to achieve the above-described object, in the present invention, as a first invention, a hollow body, a key cylinder that is provided in front of the body and is rotatable by inserting a key, and the key cylinder The steering lock device includes: a lock bolt that locks or unlocks the rotation of the steering shaft in response to the rotation of the steering shaft; and an ignition switch that performs a switch operation in response to the rotation of the key cylinder. The rear side of the body is provided so as to be capable of moving forward and backward along the body side direction orthogonal to the rotational axis of the key cylinder, and the ignition switch has a side portion of the body that is different from the moving direction of the lock bolt. Furthermore, the rotational driving force of the key cylinder is transmitted to the ignition switch. Suggest steering lock apparatus characterized in that a gear mechanism.

As a second invention, in the steering lock device of the first invention described above,
Proposed is a steering lock device in which the ignition switch is arranged on the body in such a manner that a rotation operation shaft to be switched is orthogonal to a rotation axis of the key cylinder.

  As a third invention, in the steering lock device according to the first invention or the second invention described above, the gear mechanism is provided on a first bevel gear that rotates coaxially with the key cylinder, and a rotary operation shaft of the ignition switch, A steering lock device comprising a second bevel gear connected to the first bevel gear is proposed.

  As a fourth invention, in the steering lock device according to any one of the first to third inventions described above, the ignition switch is opposite to a moving direction of the lock bolt across the rotation axis of the key cylinder. A steering lock device characterized by being disposed on the side of the body is proposed.

  As a fifth invention, in the steering lock device according to any one of the first to fourth inventions described above, a gear mechanism described above is provided on a side portion of the body that is perpendicular to the advancing / retreating direction of the lock bottle. A steering lock device characterized in that an opening for assembling the mounting parts is provided.

  As a sixth invention, in the steering lock device according to any one of the first to fifth inventions described above, the rotation operation shaft of the ignition switch is advanced by the lock bolt across the rotation axis of the key cylinder. Proposed a steering lock device characterized in that the ignition switch is arranged in the body portion between a position extending in a direction opposite to the moving direction and a position orthogonal to the moving direction of the lock bolt. To do.

The steering lock device according to the first aspect of the present invention includes the lock bolt that can move forward and backward along the body side direction orthogonal to the rotational axis of the key cylinder at the rear of the body. Since the ignition switch is arranged on the side of the body different from the moving direction of the lock bolt, the ignition switch does not protrude from the rear end of the apparatus.
Therefore, the steering lock device can be mounted even in a narrow mounting space on the side portion of the steering shaft.
As a result, the safety of the driver can be ensured, and the steering lock device can be mounted even in a narrow space around the steering shaft.

  The steering lock device according to the second aspect of the present invention is configured such that the rotational operation shaft of the ignition switch is orthogonal to the rotational axis of the key cylinder, so that the rotational force of the key cylinder can be transmitted to the ignition switch by a simple gear mechanism. it can.

In the steering lock device according to the third aspect of the present invention, the rotation conversion mechanism for transmitting the turning force of the key cylinder to the ignition switch is constituted by a simple gear mechanism including first and second bevel gears.
Further, when the arrangement position of the ignition switch is shifted in the direction around the rotation axis of the key cylinder at the time of designing the device, if the second bevel gear is configured to be shifted in the direction around the rotation axis, It can be configured without changing the internal configuration too much.
Therefore, the degree of freedom in design is improved and the layout is improved.

According to the steering lock device of the fourth aspect of the invention, the ignition switch is arranged on the side of the body opposite to the advancing movement direction of the lock bolt across the rotation axis of the key cylinder. The arrangement position of the ignition switch corresponding to the rotation axis of the cylinder and the forward / backward direction position of the lock bolt corresponding to the rotation axis of the key cylinder can be made as close as possible. It becomes a steering lock device which shortened the shape used as the direction of a rotation axis.
That is, the steering lock device can be reduced in size, and the layout can be further improved.

  According to the steering lock device of the fifth invention, the opening formed in the body side portion also in the steering lock device having a configuration in which the ignition switch is disposed in the body side portion that wraps with the body side direction in which the lock bolt advances and retreats From the part, a part for operating the lock bolt and a gear mechanism can be assembled.

  According to a sixth aspect of the present invention, the position at which the rotation operation shaft of the ignition switch extends in the direction opposite to the advancing movement direction of the lock bolt across the rotation axis of the key cylinder is orthogonal to the advancing movement direction of the lock bolt. This is a configuration of a steering lock device in which an ignition switch is arranged up to the body part.

1 is a cross-sectional view of a steering lock device according to an embodiment of the present invention, cut along a direction of a rotation axis of a key cylinder. It is the disassembled perspective view which abbreviate | omitted the body and showed the internal component of the said steering lock apparatus. It is a rear view of the above-mentioned steering lock device showing the opening for incorporation, such as a lock bolt and a gear mechanism. It is sectional drawing similar to FIG. 1 which shows the operation state which inserted the key. FIG. 5 is an enlarged partial view showing a key detection switch portion indicated by a two-dot chain line Q in FIG. It is sectional drawing similar to FIG. 1 which shows operation | movement when rotating a key. It is a top view of the said steering lock device which shows the state attached to the steering shaft. It is a front view of the steering lock device showing an embodiment in which an ignition switch is provided on the right side of the body. It is a front view of the steering lock device similar to FIG. 8 showing an embodiment in which an ignition switch is provided on the lower side of the body. FIG. 9 is a front view of a steering lock device similar to FIG. 8 showing an embodiment in which an ignition switch is provided on the body.

Next, an embodiment of a vehicle steering lock device according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the steering lock device 100 of the present embodiment includes a cylinder lock 11, a camshaft 12, a lock bolt 13, and the like in a hollow body 10 integrally formed of a metal material such as zinc. Further, in FIG. 1, an ignition switch 14 is fixed to the lower portion of the body 10.

The cylinder lock 11 is formed by a holder 15 fixed to the front side in the body 10 (right side in FIG. 1) and a key cylinder 16 that can be rotated in the holder 15 by inserting a key.
Specifically, the tumbler provided on the key cylinder 16 is removed from the concave groove of the holder 15 by inserting the key, and the key cylinder 16 can be rotated.

A camshaft 12 provided in the middle of the body 10 is connected to the rear end of the key cylinder 16 and rotates integrally with the key cylinder 16.
A first bevel gear 17 for transmitting a driving force to the ignition switch 14 is pivotally supported on the camshaft 12 so that the first bevel gear 17 can slide integrally. The first cam 19 for operating the key detection switch 18 provided along with the ignition switch 14 and the second cam 20 for moving the lock bolt 13 forward and backward are integrally formed.
Note that the key cylinder 16 and the camshaft 12 described above are given a pushing force in the forward direction (right direction in FIG. 1) by a spring 21 provided at the rear end (left end in FIG. 1) in the body 10.

On the other hand, the lock bolt 13 is slidably provided in the connecting cylinder portion 10a formed integrally with the body 10, and forms a steering shaft locking mechanism together with the second cam 20, the hanger 22, the spring 23, and the like.
Specifically, the lock bolt 13 is provided so as to be movable back and forth along the body side direction orthogonal to the rotational axis of the key cylinder 16.
When the second cam 20 of the camshaft 12 rotates, the lock bolt 13 moves down against the spring force of the spring 23, so that the lock bolt 13 moves downward and the steering shaft It escapes from a ditch | groove (illustration omitted), and becomes unlocked.

In addition, an arcuate mounting portion 10b is provided at the tip of the connecting cylinder portion 10a.
As will be described later, the mounting portion 10b uses a bracket to hold the steering column and mount the steering lock device 100 thereon.
Note that the hanger 22 of the lock mechanism is provided with a pin 24 and a spring 25 that hold the unlocked state, but this prevents the risk of the steering shaft being locked during operation.

  On the other hand, the ignition switch 14 has a rotational operation axis orthogonal to the rotation axis of the key cylinder 16 on the side of the body opposite to the advancing movement direction of the lock bolt 13 across the rotation axis of the key cylinder 16. The locking claws 26a provided on both sides of the switch case 26 are locked to the locking receiving portions 14b provided on the body 10 and fixed.

  The ignition switch 14 is turned on by turning on the power of accessories such as radio, turning on various indicator lamps, and operating the cell motor as the key cylinder 16 is rotated from the locked position to the ACC position, on position, and start position by the key. A known main switch 27 for starting the engine and the key detection switch 18 described above are provided.

That is, the main switch 27 is composed of a second bevel gear 28 that forms a gear mechanism that meshes with the first bevel gear 17 and converts a driving force, and a resin material that is integrally connected to the second bevel gear 28. A rotor 29, and disk-shaped contact plates 30, 31 provided on the rotor 29, and fixed contacts 32, 33 provided on the switch case 26.
The second bevel gear 28 can be rotated in the body 10 so that the rotation axis of the second bevel gear 28 that coincides with the rotation operation axis of the ignition switch 14 is orthogonal to the rotation axis of the key cylinder 16. Is arranged.

  Further, the key detection switch 18 includes a drive shaft 34 slidably provided in the shaft tube portion of the second bevel gear 28, and the drive shaft 34 is driven downward by the first cam 19 of the camshaft 12 (in FIG. 1). The slide pin 35 made of a resin material is pushed by the drive shaft 34 and moves downward in FIG. 1, and is attached to the slide pin 35 as can be seen from the enlarged partial view shown in FIG. When the movable contact 36 is in contact with the first fixed contact 37, the switch is turned on.

Although the movable contact 36 is movably connected to the slide pin 35, a downward spring force is applied by a spring, and the movement of the spring force is blocked by a locking portion provided on the slide pin 35. As a configuration.
When the movable contact 36 contacts the first fixed contact 37, the movable contact 36 is electrically connected to the second fixed contact 39 via a conductive spring 38 provided between the movable contact 36 and the second fixed contact 39. Are connected, and the first fixed contact 37 and the second fixed contact 39 are electrically connected, so that the switch is turned on. (Refer to the partially enlarged view shown in FIG. 5)
Further, the first fixed contact 37 and the second fixed contact 39 are integrally formed with terminals 37a and 39a provided on the connector portion 26b of the switch case 26, and these terminals 37a and 39a are connected to the key detection switch circuit. is there.

Further, as shown in FIG. 3, the steering lock device 100 configured as described above has an opening 46 formed on the side surface of the body 10 where the connecting cylinder portion 10 a and the ignition switch 14 are not provided. The hanger 22, the camshaft 12, the first and second bevel gears 17, 18 and the like are incorporated.
The lock bolt 13 is inserted into the connecting cylinder portion 10a of the body 10 from the outside rather than from the opening 46, and the hanger 22 is assembled later in the body 10.
And this opening part 46 fixes the cover body 47 by screwing etc., after incorporating a predetermined component.

Next, the operation of the steering lock device 100 configured as described above will be described.
In the state of FIG. 1 in which the key is not inserted into the key cylinder 16, the lock cylinder 13 receives the spring force of the spring 23 because the key cylinder 16 and the camshaft 12 are moved to the front end side by the spring force of the spring 21. The tip moves into the recessed groove of the steering shaft and is locked.

When the key is not inserted into the key cylinder 16, the first bevel gear 17 does not rotate, so the main switch 27 of the ignition switch 14 does not operate.
Further, as shown in FIG. 1, in the key detection switch 18 provided along with the ignition switch 14, the drive shaft 34 does not receive the cam action of the first cam 19, so that the slide pin 35 is moved upward in FIG. The movable contact 36 is not in contact with the first fixed contact 37 and is switched off.

When the key 40 is inserted into the key cylinder 16, as shown in FIG. 4, the shutter 16 a (see FIG. 6) disposed on the front end side of the key cylinder 16 is opened, and the tumbler is immersed in the key cylinder 16. The key cylinder 16 can be rotated.
Further, when the key 40 is inserted into the key cylinder 16, the shutter 16 a rotates, and one end thereof abuts against the front end portion inside the holder 15, so that the key cylinder 16 and the camshaft 12 resist the spring force of the spring 21. In order to move toward the rear end in the body 10, the tip end of the drive shaft 34 of the ignition switch 14 rides on the high portion of the first cam 19.

That is, the drive shaft 34 receives the cam action of the first cam 19 and moves backward (downward movement in FIG. 1) to move the slide pin 35 in the same direction.
Accordingly, since the movable contact 36 contacts the first fixed contact 37 by the spring force of the spring, the first fixed contact 37 and the second fixed contact 39 are electrically connected via the movable contact 36 and the conductive spring 38.
As a result, the key detection circuit operates according to the switch-on of the key detection switch 18, and notifies the key insertion state.

  Note that the first bevel gear 17 and the second cam 20 are not rotated only by inserting the key 40, so that the lock bolt 13 remains in the locked state, and the main switch 27 of the ignition switch 14 is also non-rotated. It remains in operation.

When the key 40 is rotated in the state of FIG. 4, the camshaft 12 interlocked with the rotation of the key cylinder 16 is rotated, so that the operation state shown in FIG. 6 is obtained.
That is, if the key 40 is rotated from the key insertion position to the ACC position, the hanger 22 descends according to the rotation of the second cam 20, so that the lock bolt 13 moves backward, and the tip of the hanger 22 moves backward. Escape from the ditch and unlock.

As the hanger 22 is lowered, the pin 24 protrudes from the pin housing hole, and the tip end portion of the pin 24 is positioned below the second cam 20.
Therefore, while the key 40 is being inserted, that is, while the key cylinder 16 and the camshaft 12 are moving in the rear end direction, the protruding pin 24 contacts the periphery of the disc-shaped second cam 20. Since the hanger 22 is prevented from returning, the unlocked state of the lock bolt 13 is reliably maintained.

Further, since the rotor 29 is rotated via the second bevel gear 28 by the rotation of the first bevel gear 17, the contact plates 30, 31 are rotated, the switch contacts are switched, and accessories such as radios are provided. Is turned on.
Even when the key 40 is turned to the ON position or the start position, the main switch 17 operates in the same manner, so that the engine is started by turning on various indicator lamps and operating the cell motor.

  On the other hand, when the key 40 is turned back and rotated from the ACC position to the lock position (key insertion position), the camshaft 12 is also reversed to the original position, but the pin 24 is the disk-shaped second cam 20. Since the state in contact with the surroundings does not change, the lock bolt 13 remains in the unlocked state.

Further, since the first bevel gear 17 rotates in the opposite direction to the above, the rotor 29 rotates in the reverse direction via the second bevel gear 28, and the main switch 27 is switched off.
In this operation state, since the tip end portion of the drive shaft 34 rides on the high portion of the first cam 19, the key detection switch 18 is switched on, and the key detection circuit notifies the key insertion state. Has been.

When the key 40 is removed from the key cylinder 16, it returns to the operating state of FIG.
That is, in addition to the lock bolt 13 being locked and the main switch 17 being switched off, the key detection switch 18 is switched off.
That is, when the key 40 is removed from the key cylinder 16, the rotation of the shutter 16 a is released, and the key cylinder 16 and the camshaft 12 are moved forward by the spring force of the spring 21.

As a result, the engagement between the pin 24 and the periphery of the second cam 20 is released, and the lock bolt 13 and the hanger 22 are lifted by the spring force of the spring 23, so that the lock bolt 13 is advanced and locked. It becomes.
Further, because the camshaft 12 moves forward, the tip end of the drive shaft 34 slides down from the high portion of the first cam 19 to the bottom portion, and the drive shaft 34 moves upward by the spring force of the spring 38. As the slide pin 35 moves upward, the movable contact 36 is separated from the first fixed contact 37.
As a result, the electrical connection between the first fixed contact 37 and the second fixed contact 39 is cut off, the switch is turned off, and the notification of the key insertion state of the key detection circuit is stopped.

Next, attachment of the steering lock device 100 described above will be described.
As shown in FIG. 7, the steering lock device 100 according to the present embodiment surrounds the steering column 42 with the mounting portion 10 b and the arcuate bracket 41, and screw fastening portions 10 c provided on the mounting portion 10 b and the bracket 41. , 41a are fixed by screwing.

Further, in this steering lock device 100, the arrangement position of the ignition switch 14 corresponding to the rotation axis of the key cylinder 16 and the position of the lock bolt 13 corresponding to the rotation axis of the key cylinder 16 are moved as close as possible. Since it can be provided on the side of the body 10 as described above, it becomes a steering lock device that can shorten the device shape of the key cylinder 16 in the rotational axis direction.
That is, the steering lock device can be reduced in size, and the layout can be further improved.

  As shown in the drawing, in the present embodiment, a connecting cylinder portion 10a provided with a lock bolt 13 so as to be able to advance and retreat is provided on a side portion of the body that is orthogonal to the rotational axis of the key cylinder 12 at the rear of the body 10 and ignition. Since the switch 14 is arranged on the side of the body opposite to the connecting cylinder portion 10a, the switch 14 is mounted even if the distance D between the combination switch device 43 and the column adjustment device 44 is small. Since the steering lock device 100 is mounted not on the lower side of the steering shaft 45 but on the side of the steering shaft 45, the driver's knee is not hit by a collision of the vehicle. It becomes the lock device 100,

Further, since the steering lock device of the present embodiment can be mounted even when the distance D is small, when the steering lock device of the present embodiment is mounted on the shock absorbing steering device, the impact is reduced. The steering wheel at the time, and the amount of movement to the front side of the combination switch device can be taken long,
It is possible to set a longer collapse stroke.
Thereby, the safety of the driver can be improved.

Note that the steering lock device 100 of the above-described embodiment has a configuration in which the connecting cylinder portion 10a in which the lock bolt 13 is inserted is disposed on one side portion of the body 10 and the ignition switch 14 is disposed on the other side portion of the body 10. However, the present invention is not limited to this embodiment, and the drive shaft 34 is positioned within the range of the angle θ indicated by the dotted line shown in FIG. 8 with respect to the axis 48 orthogonal to the advancing / retreating direction of the lock bolt 13. In this case, the same effect can be obtained even when the ignition switch 14 is arranged at any position.
Therefore, for example, as shown in FIGS. 9 and 10, the ignition switch 14 is disposed on the side of the body whose angle is changed by 90 degrees with respect to the protruding direction of the connecting cylinder portion 10 a (the forward and backward movement direction of the rod bolt 13). You can also.

  The present invention can be applied as a steering lock device for a vehicle having an ignition switch.

DESCRIPTION OF SYMBOLS 10 Body 10a Connecting cylinder part 10b Mounting part 12 Camshaft 13 Lock bolt 14 Ignition switch 15 Holder 16 Key cylinder 17 1st bevel gear 19 1st cam 20 2nd cam 22 Hanger 26 Switch case 27 Main switch
28 Second bevel gear 29 Rotor 30, 31 Contact plate 32, 33 Fixed contact 34 Drive shaft 35 Slide pin 36 Movable contact 37 First fixed contact 38 Conductive spring 39 Second fixed contact

Claims (6)

A hollow body,
A key cylinder provided near the front of the body and rotatable by inserting a key;
A lock bolt that locks or unlocks the rotation of the steering shaft in response to the rotation of the key cylinder;
In a steering lock device comprising an ignition switch that switches in response to the rotation of the key cylinder,
The lock bolt is provided so as to be movable back and forth along the body side direction orthogonal to the rotational axis of the key cylinder at the rear of the body, and the ignition switch is different from the advance movement direction of the lock bolt. A steering lock device comprising: a gear mechanism disposed on a side portion of the body, and further transmitting a rotational driving force of the key cylinder to the ignition switch. The steering lock device according to claim 1, wherein
The steering lock device according to claim 1, wherein the ignition switch is arranged on the body in a form in which a rotation operation shaft to be switched is orthogonal to a rotation axis of the key cylinder. In the steering lock device according to claim 1 or 2,
The gear mechanism includes a feature in that the key cylinder and the first bevel gear to rotate coaxially, provided rotating movement axis of the ignition switch, and more structure and a second bevel gear which is connected to the first bevel gear Steering lock device. The steering lock device according to any one of claims 1 to 3,
The steering lock device according to claim 1, wherein the ignition switch is disposed on a side of the body that is opposite to an advancing movement direction of the lock bolt across a rotation axis of the key cylinder. The steering lock device according to any one of claims 1 to 4,
Wherein the side of Rokkubo belt the body as a direction perpendicular to the moving direction of the steering lock device characterized in that an opening is provided for the assembly of fittings, such as the above-mentioned gear mechanism. The steering lock device according to any one of claims 1 to 5,
From the position where the rotation operation shaft of the ignition switch extends in the direction opposite to the advance movement direction of the lock bolt across the rotation axis of the key cylinder to the position orthogonal to the advance movement direction of the lock bolt. the Bode I which is between a steering lock device being characterized in that arranging the ignition switch.

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