JP2581130Y2 - Steering lock device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION This invention relates to a steering lock device in which a locking rod is held in an unlocked position until a key is removed from a key cylinder.

[0002]

2. Description of the Related Art As shown in, for example, Japanese Patent Publication No. 62-11690, a steering lock device in which a locking rod is held at an unlock position until a key is removed from a key cylinder is known. This steering lock device is provided with a check lever for detecting a key inserted into the key cylinder, and when the key is inserted into the key cylinder and rotated to the unlock position, the check lever locks the end portion locked in the groove of the locking rod. Have. When the key cylinder is rotated to the lock position and the key is removed from the key cylinder, the engagement of the check lever with the locking rod is released. Thereby, the locking rod is moved from the unlocked position to the locked position by the spring.

[0003]

In a conventional steering lock device, one end of a check lever which abuts on a dog is engaged with a periphery of an opening of a dog or a key cylinder in which the dog is housed, so that the key cylinder can be smoothly moved. Rotation may not be possible.

Therefore, an object of the present invention is to provide a steering lock device that can smoothly rotate a key cylinder in which a key is inserted.

[0005]

The steering lock device according to the present invention comprises a frame (11) and a frame (1).
Key cylinder (12) rotatably arranged in 1)
A locking rod provided in the frame (11) and moved from a locked position to an unlocked position by rotation of the key cylinder (12); and a check lever (16) provided swingably in the frame (11). ) And a dog (17) slidably disposed in an opening (12b) formed in the key cylinder (12). The opening (12b) of the key cylinder (12) has a projection (12c) projecting inward in the circumferential direction of the key cylinder (12), and one end (16a) of the check lever (16) is connected to the dog (17). An arc surface (17a) formed on the outer surface and a circumferentially inclined surface (12) formed on the outer surface of the projection (12c).
g) and at the same time can be contacted. When the key (30) is inserted into the key hole (12a) of the key cylinder (12), the check lever is moved by the dog (17) moved radially outward of the key cylinder (12) by the key (30). One end (16a) of (16) is moved radially outward, and the arc surface (17a) of the dog (17).
Is a continuous sliding surface on which one end (16a) of the check lever (16) slides together with the inclined surface (12g) of the projection (12c). Key cylinder (12) with key (30)
When the lock rod is moved from the lock position to the unlock position by rotating the lock lever to the unlock position, the other end (16b) of the check lever (16) rotates the key (30) from the unlock position to the lock position. Further, the locking rod is held at the unlock position until the locking rod is removed from the key cylinder (12). In this steering lock device, the end (12g) of the inclined surface (12g) of the projection (12c)
e) is smoothly continuous with the peripheral surface (12f) of the key cylinder (12), and when the key (30) is inserted into the key hole (12a) of the key cylinder (12), the thickness of the key (30) is reduced. Only the dog (17) moves outward in the radial direction and the inclined surface (12
g) has an arc surface (17d) of the dog (17).
a) is located radially inward, and the arc surface (17a) of the dog (17) is formed on the peripheral surface (12) of the key cylinder (12).
f) It is located radially inward. In an embodiment of the invention, a spring is provided which presses one end (16a) of the check lever (16) against the outer surface of the dog (17).

[0006]

When the key (30) is inserted into the key cylinder (12), the dog (17) moves only radially outward by the thickness of the key (30), and the moving stroke of the dog (17) is small. The resistance at the time of inserting (30) can be reduced. Also, the key (3) is attached to the key cylinder (12).
Since the outer surface of the dog (17) does not protrude from the peripheral surface (12f) of the key cylinder (12) even when the dog (0) is inserted, a recess for receiving the end of the dog (17) must be formed in the housing (20). And the peripheral surface of the key cylinder (12) (12
f) closely contacts the inner surface of the housing (20) to prevent backlash of the key cylinder (12) and allow the key cylinder 12 to rotate smoothly.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a steering lock device according to the present invention will be described below with reference to FIGS.

As shown in FIG. 1, a steering lock device 10 of the present invention has a housing 20 disposed in a frame 11, a sleeve 21 rotatably disposed in the housing 20, and a rotatable sleeve 21. And a key cylinder 12 having a key hole 12a for inserting a key. An opening 12b formed at a right angle to the key hole 12a is provided at a front portion of the key cylinder 12, and a dog 17 for detecting insertion of a key into the key hole 12a is slidably disposed in the opening 12b. Is done. A first rotor 18 provided adjacent to the key cylinder 12 is connected to a second rotor 22 via a connector 19. A cam (not shown) operatively connected to the key cylinder 12 is formed on the second rotor 22. Although not shown because it is well known, a hanger that forms a part of a locking rod is operatively connected to the cam, and the hanger is moved from the locked position to the unlocked position together with the locking rod when the cam rotates. A hanger spring is arranged between the lid fixed to the frame and the hanger, and the hanger and the locking rod are constantly biased toward the locked position. Further, the check lever 16 is arranged in parallel with the key cylinder 12, the first rotor 18, the connector 19 and the second rotor 22. The check lever 16 is pivotally disposed within the housing 20 by a pin 23,
One end 16 a of 6 contacts the outer end of dog 17. As is known, the key 30 is inserted into the key hole 12a of the key cylinder 12.
As the dog 17 is moved radially outward in the opening 12b by the insertion, the one end 16a of the check lever 16 also moves radially outward. Therefore, the other end 16b of the check lever 16 is pressed against the locking rod. When the key cylinder 12 is rotated together with the key 30 from the locked position to the unlocked position, the rotation of the cam causes the hanger and the locking rod to move from the locked position to the unlocked position against the elasticity of the hanger spring.
The other end 16b of 6 is locked by a locking rod. For this reason, the hanger and the locking rod are connected to the check lever 1
6 keeps it in the unlocked position. When the key 30 is removed from the key cylinder 12 after rotating the key cylinder 12 from the unlock position to the lock position together with the key 30, the dog 17 moves radially inward within the opening 12b.
One end 16a of the check lever 16 also moves radially inward. For this reason, the engagement between the other end 16b of the check lever 16 and the locking rod is released, and the check lever 16
The locking rod held at the unlocked position by this is moved to the locked position by the elasticity of the hanger spring.

As shown in FIG. 3, a projection 12c is formed in the opening 12b of the key cylinder 12 so as to protrude inward and in the circumferential direction of the key cylinder 12. The inclined surface 12g formed on the outer surface of the projection 12c is
It has a starting end 12d located further inward in the radial direction, and an end 12e that smoothly continues to the peripheral surface 12f of the key cylinder 12. The start end 12d of the inclined surface 12g is located inside the peripheral surface 12f of the key cylinder 12, and the end 12e is located on the same peripheral surface as the peripheral surface 12f of the key cylinder 12. As shown in FIG. 4, an arc surface 17 a is formed on an outer surface of the dog 17, and a projection 12 c of the key cylinder 12 is formed on a side portion of the dog 17.
A notch 17b into which is fitted is formed. Dog 1
The bottom of 7 has an inclined portion 17c that contacts the key 30 inserted into the key hole 12a. As shown in FIG. 2, when the key 30 is inserted into the key hole 12 a of the key cylinder 12, the arc surface 17 a of the dog 17 abutting on the one end 16 a of the check lever 16 becomes as shown in FIG. The notch 17b of the dog 17 projects outward from the starting end 12d of the projection 12c of the key cylinder 12, as shown in FIG.
The arcuate surface 17a of the dog 17 extending in the circumferential direction along the inclined surface 12g of 2c forms a continuous guide surface on which one end 16a of the check lever 16 slides together with the inclined surface 12g of the projection 12c.

In the above configuration, when the key 30 is inserted into the key hole of the key cylinder 12, the dog 17 is slid radially outward in the opening 12b of the key cylinder 12 by the key as shown in FIG. As shown in FIG. 5, the arcuate surface 17 a of the dog 17 does not project from the peripheral surface 12 f of the key cylinder 12 and the inclined surface 12 formed on the key cylinder 12.
Form a continuous sliding surface with g. At this time, one end 16a of the check lever 16 shown in FIG.
6b is in contact with the locking rod. When the key cylinder 12 is rotated together with the key 30 from the lock position to the unlock position, one end 16a of the check lever 16
The check lever 16 has a width that allows the arc surface 17a and the inclined surface 12g of the projection 12c to be simultaneously in contact with each other.
2 smoothly slides along the second inclined surface 12g. When the key cylinder 12 is rotated together with the key 30 to the unlock position and the locking rod is moved from the lock position to the unlock position, the other end 16b of the check lever 16
Lock to the locking rod. Therefore, the check lever 16 holds the locking rod in the unlocked position until the key 30 is rotated from the unlocked position to the locked position and pulled out from the key cylinder 12. When rotating the key cylinder 12 together with the key 30 from the unlock position to the lock position, one end 16a of the check lever 16 slides smoothly from the inclined surface 12g of the key cylinder 12 to the arc surface 17a of the dog 17 along the sliding surface. . When the key 30 is removed from the key cylinder 12, the check lever 16 shown in FIG.
The dog 17 is pushed down by one end 16a of the key cylinder 12, and as shown in FIG.
The inside slides inward, and the inclined portion 17c of the dog 17 comes into contact with the key hole 12a of the key cylinder 12.

In this invention, the key cylinder 12 has the key 3
When 0 is inserted, the dog 17 moves outward in the radial direction only by the thickness of the key 30, so that the movement stroke of the dog 17 is small, and the resistance when the key 30 is inserted can be reduced. When the key 30 is inserted, the circular arc surface 17a of the dog 17 is inserted.
Does not protrude from the peripheral surface 12f of the key cylinder 12,
It is not necessary to form a recess for receiving the end of the dog 17 in the housing 20, and the peripheral surface 12 f of the key cylinder 12 is in close contact with the inner surface of the housing 20, so that play of the key cylinder 12 can be prevented. Further, one end 16a of the check lever 16 which contacts the arcuate surface 17a of the dog 17 is connected to the dog 17 or the opening 12 of the key cylinder 12 in which the dog 17 is housed.
The key cylinder 12 can be smoothly rotated without engaging with the periphery of the key cylinder b.

The embodiment of the present invention is not limited to the above embodiment, but can be modified. For example, check lever 16
A spring may be provided for pressing one end 16a of the dog against the arc surface 17a of the dog 17. Obviously, the present invention can be applied to other types of steering lock devices.

[0013]

As described above, according to the present invention, it is possible to obtain a steering lock device which can rotate the key cylinder smoothly and has good operability.

[Brief description of the drawings]

FIG. 1 is a sectional view of a steering lock device according to the present invention.

FIG. 2 is a perspective view showing a main part of the steering lock device according to the present invention.

FIG. 3 is a perspective view showing the shape of a key cylinder used in the present invention.

FIG. 4 is a perspective view showing the shape of a dog used in the present invention.

FIG. 5 is a sectional view taken along line AA of FIG. 2;

FIG. 6 is a sectional view taken along the line BB of FIG. 2;

FIG. 7 is a sectional view taken along the line CC of FIG. 2 when a key is inserted;

FIG. 8 is a sectional view taken along the line CC of FIG. 2 at the time of key extraction;

[Explanation of symbols]

10. . 10. steering lock device, . Frame, 12. . Key cylinder, 12b. . Aperture,
12c. . Protrusions, 12f. . Peripheral surface, 12g. . 15. inclined surface; . Check lever, 16a. . one end,
16b. . The other end, 17. . Dog, 17a. . Arc surface,

Claims (2)

(57) [Scope of request for utility model registration] A frame (11) and a frame (11)
A key cylinder (12) rotatably disposed in the frame, and a key cylinder (12) provided in the frame (11).
The locking rod is moved from the locked position to the unlocked position by the rotation of the lock lever, a check lever (16) swingably provided in the frame (11), and an opening (12b) formed in the key cylinder (12). ) And a dog (17) slidably disposed in the key cylinder (1).
The opening (12b) of (2) has a projection (12c) projecting inward in the circumferential direction of the key cylinder (12), and one end (16a) of the check lever (16) is formed on the outer surface of the dog (17). The key hole (1) of the key cylinder (12) has a width capable of simultaneously contacting the formed arc surface (17a) and the circumferential inclined surface (12g) formed on the outer surface of the projection (12c).
When key (30) is inserted into 2a), key (30)
The check lever (16) is moved by the dog (17) moved radially outward of the key cylinder (12) by the
Is moved radially outward, and the arc surface (17a) of the dog (17) slides along with the inclined surface (12g) of the projection (12c) along with one end (16a) of the check lever (16). It becomes a continuous sliding surface that moves, and the key (3
0), the key cylinder (12) is rotated to the unlock position, and when the locking rod is moved from the lock position to the unlock position, the other end (16b) of the check lever (16) unlocks the key (30). In the steering lock device for holding the locking rod in the unlock position until the lock rod is rotated from the lock position to the lock position and pulled out of the key cylinder (12), the end (12e) of the inclined surface (12g) of the projection (12c) is connected to the key cylinder. The key (3) is smoothly connected to the peripheral surface (12f) of the key cylinder (12), and is inserted into the key hole (12a) of the key cylinder (12).
When the key (30) is inserted, the dog (17) moves radially outward by an amount corresponding to the thickness of the key (30), and the starting end (12d) of the inclined surface (12g) is moved from the arc surface (17a) of the dog (17). It is located radially inward and has an arc surface (1) of the dog (17).
7a) A steering lock device characterized in that it is located radially inward of the peripheral surface (12f) of the key cylinder (12). 2. An end (16) of a check lever (16).
2. The steering lock device according to claim 1, further comprising a spring for pressing a) against an outer surface of the dog (17).