JP2681124B2 - Lock cap device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protective cap for various exterior locks.

[0002]

2. Description of the Related Art In a conventional locking cap device, a first locking projection provided on an inner peripheral surface of a peripheral wall portion of a short cylindrical cap and a second locking projection provided on a front end outer peripheral surface of a main body are engaged with each other. By doing so, the cap is attached to the lock body,
Since the front surface of the first locking projection and the rear surface of the second locking projection that are engaged with each other are both configured to be parallel to the circumferential direction, it is not possible to perform a close attracting engagement, and the cap is subject to vibration or the like. May loosen and fall off naturally.

Further, since there is no means for holding the cap in the detached position, it is necessary to operate the locking device while pressing the cap, and the operability of the locking device is not good.

[0004]

Therefore, an object of the present invention is to prevent the cap from loosening and falling off due to vibration or the like.
It is an object of the present invention to provide a lock cap device in which the sealed state of the lock main body is firmly held, and the cap can be accurately held in the removal position.

[0005]

The lock cap device of the present invention comprises a short cylindrical cap 1, a short cylindrical lock base 2 and an annular cap base 3, which will be described below with reference to the accompanying drawings. It is composed of an annular packing 4. Several first locking protrusions 5 are provided on the inner peripheral surface of the peripheral wall portion of the cap 1 at equal intervals in the circumferential direction, and a pivot portion 13 is provided on the outer surface portion of the peripheral wall portion so as to project. The second locking protrusions 6 are provided on the outer peripheral surface of the peripheral wall portion on the front side of the lock base 2 at equal intervals in the circumferential direction, and the cutout circular ridge portions 7 are provided on the rear surface side, and the cutout portions of the ridge portions 7 are provided. A click projection 9 is provided at one end of the inner bottom surface of the through hole 8, and a through hole 16 into which the lock head 12 is fitted is provided at the center.

The cap base 3 pivotally attached to the pivot portion 13 of the cap 1 and abutting on the back side of the lock base 2 includes:
A stopper projection 10 that is rotatably inserted into the cutout portion 8 of the lock base 2 is provided on the inner peripheral surface, and a click recess 11 that engages with and disengages from the click projection 9 is provided at the tip of the stopper projection 10. The packing 4 is fixed to the back side of the cap 1, and the front surface 5a of the first locking projection 5 of the cap 1 and the rear surface 6a of the second locking projection 6 of the cap 1 which are engaged with each other are sequentially raised along the closing rotation direction of the cap 1. It is formed on an inclined surface where the height increases.

[Action]

As shown in FIG. 1, when the front surface 5a of the first locking projection 5 on the cap 1 side and the rear surface 6a of the second locking projection 6 on the lock base 2 are engaged with each other, The cap 1 is attracted to the lock base 2 side, and the annular packing 4 is closely attached to the front surface of the lock head 12,
Prevents dust and rainwater from entering through the keyhole, and protects the internal mechanism of the lock from clogging and corrosion.

In order to release the engagement between the first locking projection 5 of the cap 1 and the second locking projection 6 of the lock base 2, the click recess 11 of the cap base 3 has the click projection of the lock base 2. The cap base 3 is rotated in a predetermined direction until it is engaged with 9. The rotation range of the cap base 3 is
The opening angle between the inner end faces of the cutout portion 8 and the stopper protrusion 1
It is determined by the width dimension of zero.

At the stage where the cap base 3 is rotated until the stopper projection 10 comes into contact with one inner end surface of the cutout portion 8, the first locking projection 5 of the cap 1 comes into contact with the second locking projection 6 of the lock base 2. I ’m in a position where I ’m not, and I ’m cap 1
Is rotated about the pivot 13 by pulling it toward you,
It is removed from the lock base 2. The cap base 3 is held at the cap removal position by the engagement between the click recess 11 and the click projection 9.

[0010]

In the illustrated embodiment, the cap 1 and the cap base 3 are assembled by elastically engaging a pivot shaft portion 13 of the cap 1 with a bearing groove 14 provided in the cap base 3. The height of the notched circular protrusion 7 on the back side of the lock base 2 is set to be slightly higher than the thickness of the cap base 3. Therefore, the front end collar portion 1 of the lock head 12
Even when 7 is brought into contact with the front surface of the peripheral wall portion of the lock base 2 and the lock body is inserted into the mounting hole 18 of the door 15 and is fixed to the door 15 with the tightening nut 19, the cap base 3 is not attached to the lock base 2. Can be rotated.

[0011]

As described above, in the lock cap device of the present invention, several first engaging projections 5 are provided on the inner peripheral surface of the peripheral wall portion of the cap 1 at equal intervals in the circumferential direction. , A plurality of second locking projections 6 are provided on the outer peripheral surface of the peripheral wall portion of the lock base 2 at equal intervals in the circumferential direction, and the second locking projections 6 and the front surface 5a of the first locking projection 5 are engaged with each other. Since the rear surface 6a of the locking projection 6 is formed as an inclined surface whose height gradually increases along the closing rotation direction of the cap 1, the cap 1 and the lock base 2 are firmly coupled, and the cap 1 is loosened. Fall off and lock head 12
A sufficient sealed state can be obtained by the annular packing 4 on the back surface of the cap without exposing the above.

Further, a click projection 9 is provided on the inner bottom surface of the cutout portion 8 of the cutout-shaped raised portion 7 of the lock base 2 and is inserted into the cutout portion 8 of the lock base 2 on the inner peripheral surface of the cap base 3. By providing a stopper protrusion 10 and a click recess 11 at the tip of the stopper protrusion 10, the click protrusion 9 and the click recess 11 are elastically engaged with each other when the cap 1 is rotated to a removable position. Since the cap base 3 is fixed at the rotation position, the cap 1 pivotally attached to the cap base 3 is stably held at the removal position, and the cap does not interfere with the operation of the lock body. , Excellent in operability.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view of a lock cap device according to an embodiment of the present invention in a state where a cap is attached.

FIG. 2 is a vertical cross-sectional view of the lock cap device with a cap removed.

FIG. 3 is a front view of a cap base of the lock cap device.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a front view of a lock base of the lock cap device.

FIG. 6 is a rear view of the lock base.

FIG. 7 is a sectional view taken along line BB of FIG. 5;

FIG. 8 is a bottom view of the lock base.

FIG. 9 is a front view of a cap of the lock cap device.

FIG. 10 is a rear view of the cap.

FIG. 11 is a sectional view taken along line CC of FIG. 9;

FIG. 12 is a sectional view taken along line DD of FIG. 10;

[Explanation of symbols]

 1 Cap 2 Lock Base 3 Cap Base 4 Cap Packing 5 1st Locking Protrusion 6 2nd Locking Protrusion 7 Notched Circular Ridge 8 Notch on Ridge 9 Click Prot 10 Stopper Protrusion 11 Click Recess 12 Lockhead Part 13 pivot part 14 bearing groove part 15 door 16 through hole 17 front end flange part of lock head 18 mounting hole 19 tightening nut

Claims (1)

(57) [Claims] 1. A plurality of first locking projections 5 on the inner peripheral surface of the peripheral wall portion.
And a plurality of second locking projections 6 on the outer peripheral surface of the peripheral wall portion on the front side. Are provided at equal intervals in the circumferential direction, and the notched circular ridges 7 are provided on the back side.
A click projection 9 is provided at one end of the inner bottom surface of the cutout portion 8 of the raised portion 7, and a through hole 16 into which a lock head 12 is fitted at the center thereof.
A short cylindrical lock base 2 provided with; and abutment on the back side of the lock base 2 by being pivotally attached to the pivot portion 13 of the cap 1.
A stopper protrusion 10 that is rotatably inserted into the cutout portion 8 of the lock base 2 is provided on the inner peripheral surface, and a click recess 11 that engages with and disengages from the click protrusion 9 is provided at the tip of the stopper protrusion 10. An annular cap base 3 and an annular packing 4 fixed to the back side of the cap 1,
The front surface 5a of the first locking projection 5 and the second locking projection 6 which are engaged with each other
A locking cap device in which the rear surface 6a is formed as an inclined surface whose height increases sequentially along the closing rotation direction of the cap 1.