JPS6346284Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a steering lock device for locking a steering shaft to prevent theft of a vehicle.

[Prior art]

Conventionally, in a steering lock device, a lock member that engages with an engagement groove of a steering shaft to lock the steering shaft, and a key device that controls movement of this lock member are integrally attached to a die-cast body. This main body is fixed to a mounting end plate fixed to the steering pipe.

However, in the above configuration, if the steering shaft in the locked state is forcibly rotated, this rotational force is received by the main body via the locking member and the rotation of the steering shaft is prevented, so there is a risk of damage to the main body. The main body must be made of a material with high strength to be robust, which causes problems in that it is expensive and heavy.

[Purpose of invention]

This invention was made in view of the above points,
The purpose is to eliminate the need to make the entire device robust;
To provide a steering lock device that is lightweight and can reduce costs.

[Summary of the idea]

In the present invention, a guide groove oriented toward the outer circumferential direction of the steering shaft is integrally provided on a mounting end plate fixed to a steering pipe that rotatably supports the steering shaft, and the outer circumferential portion of the steering shaft is disposed within the guide groove. The steering shaft is characterized in that a rod-shaped locking member is provided to lock the rotation of the steering shaft by fitting into an engagement groove provided in the steering shaft, and the rotational force acting on the locking member is directly received by the mounting end plate.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a steering pipe which rotatably supports a steering shaft 2 therein, and a mounting end plate 3 is integrally fixed by welding or the like to the outer periphery of the steering pipe in the vehicle interior. Reference numeral 4 denotes a guide groove formed into a U-shaped cross section by press working on the mounting end plate 3, and an opening 1a communicating with the guide groove 4 is formed in the steering pipe 1. Reference numeral 5 denotes a collar fixed to the outer periphery of the steering shaft 2 by welding or the like, and an engagement groove 6 facing the guide groove 4 through an opening 1a is formed on the outer periphery of the collar. 7 is a plastic switch base attached to the mounting end plate 3, and the mounting hole 7a of this switch base 7 is
A well-known rotary key device 8 is attached so as to penetrate through it. A key 9 is inserted into one end of the key device 8, and when the key 9 is rotated, an actuator 10 at the other end is rotated. Reference numeral 11 denotes a body fixed to the lower end of the switch base 7 shown in FIG. It is installed. Reference numeral 14 denotes a sliding portion extending laterally from the body 11. This sliding portion has a substantially U-shaped cross section with an open top and is housed in the guide groove 4, with the upper opening opening at the lower end surface of the switch base 7. 7
It is occluded by b. Reference numeral 15 denotes a rod-shaped locking member that slides in the direction of arrow A and the direction opposite to arrow A within the sliding portion 14, and a short diameter portion 16a formed in the actuator 10 and An eccentric shaft portion 16 having a long diameter portion 16b is passed through, and the tip portion 15b at the other end can be fitted into the engagement groove 6 of the steering shaft 1. 17
is housed in the body 11 and the locking member 15 is shown by arrow A.
This is a spring that biases the direction.

Next, the operation of the above configuration will be explained. When the key device 8 is operated to the "off" state as shown in FIG.
When the steering shaft 2 is rotated in this state and the tip end 15b of the locking member 15 matches the engagement groove 6 of the collar 5, the spring 17 The distal end portion 15b is biased in the direction of arrow A and is fitted into the engagement groove 6, thereby locking the rotation of the steering shaft 2 (see the solid line in FIG. 1). When an attempt is made to rotate the steering shaft 2 by turning the steering handle (not shown) from this state, this rotational force is blocked by the guide groove 4 via the engagement groove 6, the locking member 14, and the sliding part 13, and the steering shaft 2 is rotated. Shaft 2 is held locked.

Next, when the key 9 is inserted into the key device 8 and rotated, the actuator 10 rotates, the long diameter portion 16b of the eccentric shaft portion 16 comes into contact with the sliding hole 15b of the lock member 15, and the spring 17 is activated. The locking member 15 is moved in the opposite direction of arrow A to the position shown by the two-dot chain line in FIG. 1 against the applied force. As a result, the tip end 15b of the locking member 15 is separated from the engagement groove 6, and the steering shaft 2 is brought into the unlocked state.

According to the above embodiment, the steering shaft 2
When the steering wheel is rotated in the locked state, this rotational force is transferred to the mounting end plate 3, which is integrally fixed to the steering pipe 1 by welding or the like, through the engagement groove 6, the locking member 15, and the sliding part 14. Since the steering wheel, that is, the steering shaft 2, is directly supported by the guide groove 4 and prevented from rotating, the rotational force of the steering shaft 2 does not act on the switch base 7 to which the key device 8 is attached at all, thus making the switch base 7 more robust. For example, even if it is made of plastic or the like, there is no risk of damage and it can be made lightweight, resulting in cost reduction.

It should be noted that the present invention is not limited to the above-mentioned embodiment; for example, the sliding part 14 may be omitted and the locking member 1 may be omitted.
5 may be moved directly within the guide groove 4, and various other modifications are possible without departing from the gist.

[Effect of idea]

As is clear from the above description, the present invention has a guide groove integrally provided on the mounting end plate fixed to the steering pipe, and the guide groove is fitted into the engagement groove provided on the outer periphery of the steering shaft. A rod-shaped locking member for locking the rotation of the steering shaft is provided, and the rotational force acting on the locking member is directly received by the mounting end plate, so that it is lightweight and the manufacturing cost can be reduced.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with FIG. 1 being a longitudinal sectional side view, and FIGS. 2 and 3 being perspective views of the main parts. In the drawing, 1 is a steering pipe, 2 is a steering shaft, 3 is a mounting end plate, 4 is a guide groove, and 6
8 is an engagement groove, 8 is a key device, 9 is a key, 15 is a lock member, and 15b is a tip.

Claims (1)

[Scope of utility model registration request] A mounting end plate fixed to a steering pipe that rotatably supports a steering shaft, a guide groove oriented toward the outer circumference of the steering shaft formed integrally with the mounting end plate, and a guide groove facing the guide groove. an engagement groove formed on the outer periphery of the steering shaft; and a rod-shaped locking member that is movably provided in the guide groove and that locks rotation of the steering shaft by fitting its tip into the engagement groove. and a key device for locking and unlocking the steering shaft by controlling the movement of the lock member by key operation.