JPS6013708Y2 - Locking rod holder mechanism in automobile steering lock device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a holder mechanism for a locking rod in a steering lock device for an automobile. After the locking rod is assembled into the holder, the entire locking rod is inserted into the frame through an opening on the steering shaft side. By inserting it, ease of assembly and theft prevention are improved.

Examples will be described below with reference to the drawings.

In the drawing, 1 is a frame of a steering lock device, which has a small opening 1a at the front and a large opening 1b at the rear, through which a housing case 2 of a cylinder lock is inserted and fixed. In the case 2, a key cylinder 3 is rotatably provided as is known in the art.

The front end of the key cylinder 3 is provided with a first step 3a in the circumferential direction, which engages with the inner periphery of the front end opening 1a of the frame 1 so as not to be pulled out forward. 1st
A second circumferential step 3a' formed at the rear of the step 3a engages with the annular step 2a of the housing case 2 to be rotatable and supported so as not to move in the axial direction.

An insertion hole 3b for a key 4 is formed in the center of the key cylinder 3, and a plurality of pin tumblers (not shown) driven by the key 4 are provided between the key cylinder 3 and the housing case 2 as is known in the art. .

One end of the spindle 5 is engaged with the locking hole 3c at the rear end of the key cylinder 3, and the other end of the spindle 5 is connected to the frame 7.
The large opening 1 of the frame 7 is fixed by the groove 1c of the frame 7.
It is supported by a hole 6a in plate 6 which closes b.

Thus, the spindle 5 is inserted into the locking hole 3c through the hole 6a.

A hole 6b reaching the hole 6a is formed in the inner side of the plate 6 facing the steering shaft portion, and a pin spindle 7 fitted in the hole 6b is inserted into the annular R5 of the spindle 5.
a to rotatably lock the spindle at a predetermined position, thereby preventing the lock from being broken after the switch case 8 portion is removed.

Reference numeral 11 denotes a locking rod, which is slidably provided on the holder 12 and is always urged toward the locked position by a spring 9 provided between it and the top 12a of the holder 12.

The bottom 12b of the holder 12 closes the opening 1d of the frame 1 facing the steering shaft portion.

The locking rod 11 is formed with a locking groove 11a into which a check lever (to be described later) engages, and the hanger 10 is assembled via a connecting groove 11b at the end.

The hanger 10 is provided with a protruding driven portion 10a that engages with a cam portion 3h at the rear end of the key cylinder 3.

As shown in FIG. 6, the holder 12 in which the locking rod 11 to the hanger 10 are pre-assembled is inserted into the frame 1 through the opening 1d, and then moved toward the key cylinder 3 to lock the driven portion 11a of the hanger 10. is the cam part 3h
Then, as described above, the plate 6 is fitted into the groove IC and fixed.

A support chamber 2b along the axial direction of the key cylinder 3 is formed in the housing case, facing the outer circumferential portion of one side of the key cylinder 3. A check lever 13 is provided so as to be able to rotate slightly in a direction intersecting with the check lever 13.

An annular protrusion 13a that serves as a rotational fulcrum is formed in the middle of the check lever 13, and a spring 14 is provided between the annular protrusion 13a and the holder 12 behind the annular protrusion 13a, so that the check lever 13 is always moved forward. Forced.

The check lever 13 has an engaging protrusion 13b formed at its front end for engaging the key cylinder 3, and an engaging portion 13c for engaging the locking groove 11a of the locking rod 11 at its rear end.

A ball 16 is provided in the hole 2C of the housing case 2 and is urged by a spring 15 to abut against the front half of the check lever 13, so that the engaging protrusion 13b is always pressed against the outer circumference of the key cylinder 3.

A check lever 13 is located on the front outer periphery of the key cylinder 3.
An oblique drive cam 3d is formed for the engagement protrusion 13b, and the terminal end 3d2 of the drive cam 3d is formed deeper than the drive cam 3d with a circumferential locking step 3 perpendicular to the axial direction.
It is continuous with e.

At the rear of the starting end 3d of the oblique drive cam 3d,
A radial hole 3f reaching the key insertion hole 3b is formed, and the control piece 17 for the check lever 13 is formed in the hole 3f.
is slidably provided.

The outer end 17a of the control piece 17 faces the support chamber 2b in the lock position, and a part of the control piece 17 abuts against the housing case 2 by the spring 18, and is supported so that the inner end 17b does not protrude into the key insertion hole 3b. be done.

A tapered guide surface 17c is provided at the rear of the outer end of the control piece 17.
is formed.

A tapered guide portion 3g for the engagement protrusion 13b of the check lever 13 is formed on the rear side of the locking step portion 3e at the rear of the starting end 3d1 of the drive cam, that is, at a portion reaching the rear of the control piece 17.

In the above configuration, before the key 4 is inserted into the steering lock device, the device is in the state shown in FIG. Since the driven part 10a of the hanger 10 is located in the notch 3ht of the cam part 3h of the key cylinder 3, the hanger 10 is pressed by the spring 9 and locked. A rod 11 is inserted into a hole in a steering shaft (not shown) to lock rotation of the steering shaft.

Next, insert key 4 into key cylinder 3 and press key cylinder 3.
When the check lever 13 is rotated, the drive cam 3d causes the check lever 13 to retreat via the engagement protrusion 13b, and the cam portion 3
h, the driven protrusion 10a is positioned at the circumferential portion 3h2, and the hanger 10 to the locking rod 11 are driven to retreat from the steering shaft, and in the accessory position, the engagement protrusion 13b of the check lever 13 is moved to the locking step. 3e, the engaging portion 13c engages with the locking groove 11a of the locking rod 11, and holds the locking rod 11 in the unlocked position (Fig. 8).

If the rotation continues from this state, the key cylinder 3 will rotate from the on position to the start position (Fig. 8 C and 2).
Accordingly, the spindle 5 switches the contacts in the switch case 8.

When the key cylinder 3 is returned to the lock position from this state, the engaging protrusion 13b of the check lever 13 is lifted up by the tapered guide portion 3g while following the locking step 3e, and is positioned at the rear of the control piece 17, as shown in FIG. ) (FIG. 8E) Then, when the key 4 is pulled out, the elasticity of the spring 14 that urges the check lever 13 forward is applied to the spring 1 of the control piece 17.
8, the engaging protrusion 13b pushes down the control piece 17 via the tapered guide part 17e and moves forward to the front end 3dt of the drive cam 3d, and along with this, the engaging part 13c at the rear end Since the hanger 10 is removed from the locking groove 10a of the hanger 10, the hanger 10, which has lost its support by the check lever 13, is driven by the spring 9, and the locking rod 11 moves to the locked position (FIG. 1) (FIG. 8A).

As described above, in the present invention, the locking rod can be assembled into the holder in advance, and the assembled body is then assembled into the frame from the opening on the steering shaft side of the frame, so that assembly performance is improved. This can greatly improve security, and since it can be built inside using the opening that will eventually be closed, theft prevention can also be improved.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the steering lock device, Fig. 2 is an operating state diagram of the same as above, Fig. 3 is a longitudinal sectional view of the same as above, Fig. 4 is a sectional view taken along the line IV-IV of Fig. 1, and Fig. 5 is a cross-sectional view of the steering lock device. is an exploded perspective view of the locking rod part, FIG. 6 is a perspective view showing the process of connecting the locking rod to the frame, FIG. 7 is a perspective view of the main parts of the key cylinder, and FIG. 9 is an explanatory view showing the relationship between the cam part and the hanger in the key cylinder, and FIG. 9 is a perspective view showing the relationship between the cam part and the hanger. 1...Frame, 1d...Opening, 9
... Spring, 11 ... Locking rod, 12 ... Holder, 12a ... Top, 12b ... Bottom.

Claims (1)

[Scope of utility model registration request] It has a top part and a bottom part that closes an opening on the steering shaft side of the frame, and supports a locking rod so as to be slidable forward and backward with respect to the steering shaft with a spring interposed between the top part and the bottom part. A holder mechanism for a locking rod in a steering lock device for an automobile, characterized in that it can be disposed in the frame through the opening.