JPH0452366Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a steering lock device with a switch for locking and unlocking the steering shaft using a key in vehicles such as motorcycles and automobiles to prevent theft.

Prior Art In a motorcycle, a main switch is provided in the handle, and by rotating a key cylinder fitted in the switch body with a key, a switch connecting a battery to an ignition circuit, for example, can be connected or disconnected. However, normally this main switch also serves as a steering lock device for anti-theft purposes, and the lock pin can be made to protrude from the main body by means of the key cylinder. The protruding lock pin engages with a hole in a bracket fixed to the vehicle body, locking the handle portion to the vehicle body and making steering operation impossible.

Conventionally, as one of such main switches, as shown in FIG. There is one in which a retainer spring 05 is inserted between a rotor 04 that is fitted to the key cylinder 03 so as to be slidable and rotate integrally with the key cylinder 03. A switch mechanism that interlocks with the key cylinder 03 is provided on the left side of the illustrated portion, and a lock pin operating mechanism that engages and disengages the rotor 04 is also provided. The key cylinder 03 is pressed rightward by a retainer spring 05, and when the key is inserted into a key hole (not shown) provided at the right end and rotated, the switch mechanism is activated. To make the lock pin protrude, push the key cylinder 03 against the retainer spring 05, and the rotor 0
4 is engaged with the lock pin actuating mechanism by the force of the spring 05, and when the key cylinder 03 is subsequently rotated, the lock pin actuating mechanism is actuated to project the lock pin.

Problems to be Solved by the Invention In the conventional main switch as described above, the retainer spring 05 is simply a coil spring with the same outer diameter from end to end between the key cylinder 03 and the rotor 04. It was just pinched. Therefore, since the terminal portions at both ends of this retainer spring 05 are located at the same radial position as the other portions, the terminal surface 06 is likely to catch on the inner surface of the cylinder hole 02, especially at the terminal portion on the key cylinder 03 side.
This increases the rotational resistance of the key cylinder 03,
A large torque was required to turn the key cylinder 03.

Means and Effect for Solving the Problems Therefore, in the present invention, the switch is moved in and out by rotating the key cylinder, and the retainer spring is inserted between the key cylinder and the rotor. In a switch with a steering lock for a vehicle in which the lock pin is made to protrude from the main body by being pushed in and rotated against a force, the outer diameter of at least the end portion of the retainer spring on the key cylinder side is the outer diameter of the retainer spring. Make it smaller.

According to the present invention, the end portion of the retainer spring does not interfere with the inner wall surface of the cylinder hole in which the key cylinder is fitted, and therefore the rotational resistance of the key cylinder is reduced, making it easier to rotate the key cylinder. Required torque is reduced.

Embodiment FIG. 2 is a front view of a main switch 1 for a motorcycle as an embodiment of the present invention, and FIG. 3 is a longitudinal cross-sectional view of a main part thereof. This main switch 1 is attached to the handle of a motorcycle. The main body 2 of the main switch 1 is a front switch box part 2.
It consists of a cylinder part 2b extending rearward and a cylinder part 2b, and various switches are housed inside the switchbox part 2a. The cylinder portion 2b is provided with a cylinder hole 3 that penetrates from front to back.
A key cylinder 4 is slidably and rotatably fitted into the cylinder hole 3. A key hole 5 is provided at the rear end of the key cylinder 4, and by inserting a key 6 into the key hole 5 and turning it, the key cylinder 4 is rotated within the cylinder hole 3. be able to. The reduced diameter front portion of the key cylinder 4 extends into the switchbox portion 2a;
It is interlocked with a switch actuation mechanism within the section 2a.

A hole 7 perpendicular to the key cylinder 4 is provided between the switchbox portion 2a and the cylinder portion 2b of the main body 2, and a rotor 8,
A cam member 9 and a lock pin 10 are provided. The rotor 8 is fitted onto the key cylinder 4 so as to rotate integrally therewith, but is slidable relative to the key cylinder 4 in the axial direction. The cam member 9 is arranged adjacent to and in front of the rotor 8, and when the rotor 8 is pressed against the cam member 9, the two engage, and rotate integrally with the rotor 8 as it rotates. I come to do it. The lock pin 10 is in sliding contact with the cylindrical portion 7a at the bottom of the hole 7, and is normally engaged with the cam portion 9a of the cam member 9 and held in a retracted state into the main body 2 as shown. 11 is a compression spring, and lock pin 1
0 is biased by this spring 11 in a direction to protrude downward from the main body 2.

A stepped portion 12 is formed in the intermediate portion of the key cylinder 4 by reducing the front diameter, and a retainer spring 13 made of a coil spring is inserted between this stepped portion 12 and the end surface of the rotor 8. ing. Therefore, although the rotor 8 is pressed forward and the key cylinder 4 is pressed backward by the retainer spring 13, this pressing force is not strong enough to cause the rotor 8 and the cam member 9 to be integrally rotatably engaged. To move the key cylinder 4 backward, use the cap 1.
4 to the position shown.

Insert the key 6 into the key hole 5 of the key cylinder 4 and turn it clockwise in Fig. 2 to turn it OFF.
When turned from the "ON" position to the "ON" position, the key cylinder 4
A switch in the switch box portion 2a is turned on via the switch box 2a, and the battery and ignition circuit are connected, for example. To turn the key 6 counterclockwise from the "OFF" position, use the control pin 15 and the control groove 1.
6, the key cylinder 4 cannot be turned until it is pushed forward. key cylinder 4
When pressed, the retainer spring 13 is compressed,
Since a strong pressing force acts on the rotor 8, the rotor 8 and the cam member 9 are engaged with each other due to this pressing force. Then, as the key cylinder 4 continues to rotate, the cam member 9 rotates via the rotor 8, and the cam portion 9a
The support of the lock pin 10 is removed, and the lock pin 10 is pushed out by the spring 11, protrudes from the main body 2, and engages with an engagement hole provided on the vehicle body side. In this way, the handle part to which the main switch 1 is attached is locked to the vehicle body and cannot be operated. However, after turning the key 6 to the "LOCK" position, the key is locked due to the relationship between the control pin 15 and the control groove 16. 6
Even if the key cylinder 4 is pulled out, the key cylinder 4 does not return to its original position and remains in the pushed-in position. When the key 6 is inserted into the key hole 5 again and returned to the "OFF" position while applying a pushing force to the key cylinder 4, the lock pin 10 is pulled into the main body 2 by the cam portion 9a of the cam member 9, and the lock is unlocked. Ru.

Fig. 4 is an enlarged view of part A in Fig. 3, showing only the cylinder part 2b of the main body 2 and the key cylinder 4 in cross section, and Fig. 5 is a similar view taken along the line V-V in Fig. 4. 2 is a cross-sectional view showing only the cylinder portion 2b and the key cylinder 4. As can be seen from these drawings, the end portion 17 of the retainer spring 13 in contact with the stepped portion 12 is bent inward by approximately 90 degrees, and its tip is embedded in a hole 18 provided on the circumferential surface of the key cylinder 4. ing. As described above, in this embodiment, the diameter d ₁ of the tip of the terminal portion 17 is smaller than the outer diameter d ₂ of the main body portion of the retainer spring 13;
Moreover, since it is buried in the hole 18 of the key cylinder 4, when the key cylinder 4 rotates, the terminal part 17 does not catch on the inner surface of the cylinder hole 3 and resist the rotation of the key cylinder 4, which is relatively By easily rotating the key cylinder 4 with a small force, the switch can be moved in and out and the handle can be locked.

In the modification shown in FIGS. 6 and 7, the terminal portion 17 is not bent radially inward at a substantially right angle as described above, but is bent inward at a relatively shallow angle. Then, the terminal portion 1 is attached to the circumferential surface of the key cylinder 4.
A notch 19 having an inclination that matches the angle 7 is provided, and the end portion 17 is inserted and locked into the notch 19. In this modification, the end surface 17 of the terminal portion 17
A is partially exposed from the key cylinder 4, but since its outer diameter _d1 is smaller than the outer diameter _d2 of the retainer spring 13, the end portion 17 interferes with the inner surface of the cylinder hole 3 when the key cylinder 4 rotates. The same effect as that shown in FIGS. 4 and 5 can be obtained.

The end portion of the retainer spring 13 on the rotor 8 side is connected to the terminal portion 2 as shown in FIGS. 8 and 9.
0 may be bent outward in the axial direction, and the terminal portion 20 may be inserted into an engagement hole 21 provided in the end surface of the rotor 8 and locked therein. In this way, the retainer spring 13 has its rear end fixed to the key cylinder 4 by the engagement between the terminal part 17 and the hole 18 or the notch 19, and its front end fixed to the key cylinder 4 by the engagement between the terminal part 20 and the engagement hole 19.
Since it is fixed to the rotor 8 by engagement with the key cylinder 4 and the rotor 8, it rotates integrally with the key cylinder 4 and the rotor 8. Therefore, deformation such as twisting does not occur in the retainer spring 13, so that the key cylinder 4 can be rotated more smoothly.

In the above embodiment, the retainer spring 13
A right cylindrical coil spring was used as a coil spring, and its terminal portion 17 was bent inward to make the outer diameter d ₁ smaller than the outer diameter d ₂ of the main body. If a shaped retainer spring 22 is used, there is no need to particularly bend the end portion. The barrel-shaped retainer spring 22 itself has an outer diameter d ₁ at both ends that gradually decreases from an outer diameter d ₂ at the center. Therefore, by simply placing the terminal portion 23 along the stepped portion 12 of the key cylinder 4, interference between the terminal portion 23 and the inner surface of the cylinder hole 3 can be prevented.

Effects of the Invention As described above, in the present invention, the switch is moved toward and away from the switch by rotating the key cylinder, and the key cylinder is pushed against the force of the retainer spring inserted between the key cylinder and the rotor. In the switch with a steering lock for a vehicle, in which the lock pin is made to protrude from the main body by rotating the lock pin, the outer diameter of at least the end portion of the retainer spring on the key cylinder side is made smaller than the outer diameter of the retainer spring.
The end portion of the retainer spring does not interfere with the inner wall surface of the cylinder hole into which the key cylinder is fitted, thereby reducing rotational resistance of the key cylinder. Therefore, the torque required to rotate the key cylinder is reduced, and the key cylinder can be rotated easily and smoothly.

[Brief explanation of the drawing]

Fig. 1 is a partially cut away sectional view showing the retainer spring portion of a conventional switch with a steering lock, Fig. 2 is a front view of a switch with a steering lock according to the present invention, and Fig. 3 is a partially cut away vertical sectional view thereof. , FIG. 4 is a partially cutaway enlarged sectional view of part A in FIG. 3, FIG. 5 is a partially cutaway cross-sectional view taken along the line V-V in FIG. 4, and FIGS. Drawings similar to FIGS. 4 and 5 showing other modified examples, FIG. 8 being a side view showing the contact portion between the retainer spring and the lock, FIG. 9 being a front view thereof, and FIG. 10 showing other modifications. A perspective view of a retainer spring in an example,
FIG. 11 is a drawing similar to FIG. 4 in the same embodiment. 1... Main switch, 2... Body, 3... Cylinder hole, 4... Key cylinder, 5... Key hole,
6... Key, 7... Hole, 8... Rotor, 9... Cam member, 10... Lock pin, 11... Spring, 12... Step, 13... Retainer spring, 14... Cap, 15... ...control pin, 16
... Control groove, 17 ... Terminal section, 18 ... Hole, 19
...notch part, 20 ... terminal part, 21 ... engagement hole,
22... Retainer spring, 23... Terminal section.

Claims (1)

[Scope of utility model registration request] By rotating the key cylinder, the switch approaches and separates, and by pushing and rotating the key cylinder against the force of a retainer spring inserted between the key cylinder and the rotor, the lock pin is made to protrude from the main body. A switch with a steering lock for a vehicle as described above, wherein the outer diameter of at least the end portion of the retainer spring on the key cylinder side is smaller than the outer diameter of the retainer spring.