JP2862841B2 - Lock handle device for non-rubbing engagement type door - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock handle device used for a door of an electric equipment storage box and the like, in which a key handle is withdrawn from a lock shaft when locked.

[0002]

2. Description of the Related Art A conventional lock handle device for a door includes a fixed body fixed to a door and provided with a key hole through which a key handle can be inserted and removed; and a rotatable and axially immovable bearing tube portion of the fixed body. A lock shaft provided at a front end thereof with a passive concave portion which is fitted and into which a driving projection of a key handle is inserted;
The lock shaft is fixed to the rear end of the lock shaft, and includes a catch on the fixed frame side and a stopper plate that is engaged and disengaged. In this conventional device, when the lock shaft is rotationally driven by the drive projection of the key handle, the stopper plate rotates in a plane parallel to the rear surface of the door, and the front end portion of the stopper plate rubs against the catch on the fixed frame side. To engage.

However, in the conventional device in which the stopper plate and the catch are engaged while rubbing each other, it is necessary to accurately adjust the position of the catch plate with respect to the catch.
Installation work is troublesome. In addition, if the installation of the door to the fixed frame deteriorates due to aging, the positional relationship between the stopper plate and the receiver will also be out of order, so the stopper plate may hit the side of the receiver and lock it. May not be established.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an engagement between a stopper plate and a receiving metal even when there is an error in the initial installation of a door or when the door is erroneously assembled due to aging. The present invention provides a non-rubbing engagement type door lock handle device in which the locking of the door by the method is always properly established.

[0005]

A lock handle device for a door according to the present invention will be described with reference to the reference numerals in the accompanying drawings. A fixed body 1 provided with a helical surface 18 on the back surface centered on the keyhole 10; and a key handle 9 A lock shaft 4 having a passive concave portion 13 at the front end into which the driving projection 12 is inserted; and a metal holder 1 fixed to the rear end of the lock shaft 4 and on the fixed frame body 14 side.
A stopper plate 3 which is engaged with and disengaged from the shaft 5; a shaft hole 16 fixedly provided in a rear end portion of the bearing cylinder portion 11 and a central portion into which the lock shaft 4 is inserted; A guide tube 6 provided with a spiral surface 17 on the lock shaft 4 and movable in a spiral groove 19 formed by the spiral surface 18 of the fixed body 1 and the spiral surface 17 of the guide tube 6. It comprises a cam pin 7 to be inserted; and a spring 5 which is fitted between the spring receiving portion 24 of the lock shaft 4 and the spring receiving portion 25 of the guide cylinder 6 and urges the lock shaft 4 to move forward.

When the key handle 9 is inserted into the key hole 10 of the fixed main body 1 and the drive projection 12 of the key handle 9 is engaged with the passive recess 13 of the lock shaft 4 and then the key handle 9 is turned, the cam pin 7 is turned. By moving backward along the spiral groove 19, the lock shaft 4 moves rearward while rotating against the bias of the spring 5. Therefore, the stopper plate 3 rotates while separating backward from the metal receiving 15 on the fixed frame body 14 side, and reaches the unlocking position. When the stopper plate 3 comes to the unlocking position in this way, the drive projection 12 of the key handle 9 is engaged with the hole edge back surface 10a of the key hole 10 of the fixed main body 1, so that the door 8 is not attached to the key handle. 9 is released by pulling it toward you.

When the key handle 9 is turned in the opposite direction after the door 8 is closed, the cam pin 7 moves forward along the spiral groove 19, so that the lock shaft 4 receives the bias of the spring 5 properly. Move forward while rotating. For this reason, the stopper plate 3 approaches from the rear of the receiver 15 while rotating, and engages with the receiver 15 at the end of rotation.

The base surfaces of the helical surfaces 17, 18 are formed on flat surfaces 17a, 18a perpendicular to the axis of the lock shaft 4 so that the cam pin 7 stops at the unlocking position. In the above locking position, the cam pin 7
The top surfaces of the helical surfaces 17 and 18 are flat surfaces 17 perpendicular to the axis of the lock shaft 4 so that the
b, 18b.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, a fixed body 1 is shown.
Is provided with a waterproof cover 2 on the front side. The waterproof cover 2 has a guide protrusion 21 on the rear surface side for engaging with the guide protrusion 20 on the left and right side surfaces of the fixed body 1, and slides in parallel with the front surface of the door 8. At the center of the front surface of the fixed body 1, a guide groove 36 having one end opened in the key hole 10 is provided in a vertical direction, and a guide projection 37 on the back surface side of the waterproof cover 2 is fitted. A guide slot 3 is provided on the front of the fixed body 1.
6 are provided with two upper and lower locking concave portions 31 and 32.

A leaf spring 33 is fixed to the back side of the waterproof cover 2, and the keyhole 1 of the fixed body 1 is fixed by the waterproof cover 2.
0 is closed, the leaf spring 3 is
3 engages and stably holds the waterproof cover 2 at the closed position. In the open state in which the guide projection 37 is in contact with the stopper pin 38 fixed to the fixed body 2, the leaf spring 33 is engaged with the lower locking recess 32, and stably holds the waterproof cover 2 at the open position. .

A stop ring plate 23 is fitted and fixed in an annular groove 22 on the inner surface of the rear end portion of the bearing cylinder 11 of the fixed body 1.
The guide tube 6 is prevented from being pulled out rearward. Guide tube 6
An O-ring 34 for waterproofing is fitted in the annular groove 35 on the peripheral surface. Two screw holes 4 are provided on the back side of the fixed body 1.
The screw 39 is screwed into the screw hole 40 by pressing the washer 41 against the back surface of the door 8 to thereby fix the fixed body 1.
Is fixedly fastened to the door 8.

[0012]

As described above, in the door lock handle device of the present invention, the lock handle device is fixed to the lock shaft 4 along the spiral groove 19 formed by the spiral surface 17 of the guide cylinder 6 and the spiral surface 18 of the fixed body 1. When the cam pin 7 moves, the lock shaft 4 moves in the axial direction while rotating, so that the stopper plate 3 approaches the catch 15 from behind the catch 15 in the locking operation. The engagement between the stopper plate 3 and the receiving member 15 is of an engagement type that does not rub against each other. Therefore, even if there is some error in the initial attachment of the door 8 to the fixed frame 14, the door 8 may
Even if there is a deviation in the installation of the metal, the stopper plate 3 does not collide with the side surface of the receiver 15 and the stopper plate 3 and the receiver 1
The locking of the door 8 by the engagement of the lock 5 is always established reliably.

[Brief description of the drawings]

FIG. 1 is a front view showing a locked state of a lock handle device for a non-rubbing engagement type door according to an embodiment of the present invention.

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

FIG. 3 is a sectional view taken along line BB of FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 fixed body 2 waterproof cover 3 stopper plate 4 lock shaft 5 biasing spring 6 guide cylinder 7 cam pin 8 door 9 key handle 10 fixed body key hole 11 fixed body bearing cylinder 12 key handle drive projection 13 lock shaft Passive recess 14 fixed frame body 15 receiving socket 16 shaft hole of guide cylinder 17 spiral surface on guide cylinder side 18 spiral surface on fixed body side 19 spiral groove

Claims (1)

(57) [Claims] A fixed body fixed to a door, provided with a keyhole through which a key handle is inserted and withdrawn, and a spiral surface provided on a back surface centered on the keyhole; and a bearing of the fixed body. A lock shaft 4 provided at a front end thereof with a passive recess 13 into which a drive projection 12 of a key handle 9 is inserted so as to be rotatable and movable in the front-rear axial direction in the cylindrical portion 11; A stopper plate 3 fixed to the rear end of the bearing cylinder 11 and fitted with a lock shaft 4 at the center thereof. And a guide cylinder 6 provided with a spiral surface 17 on the front surface centered on the shaft hole 16; a spiral tube 18 fixed to the lock shaft 4 in the transverse direction,
A cam pin 7 movably inserted into a spiral groove 19 formed by a spiral surface 17 of the lock shaft 4; a cam pin 7 fitted between a spring receiving portion 24 of the lock shaft 4 and a spring receiving portion 25 of the guide cylinder 6; A lock handle device for a non-rubbing type door, comprising a spring 5 which biases the door to move.