JP2820660B2 - Lock handle device for removable 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 for a removable door that allows a key handle to be pulled out of a fixed body when the door is locked.

[0002]

2. Description of the Related Art In a lock handle device for a removable door proposed in Japanese Patent Application No. 7-22222, a locking shaft is rotatably and axially immovably accommodated in a fixed body fixed to the door. A keyhole into which a key handle for driving the lock shaft is inserted and a notch through which a retaining protrusion on the peripheral surface of the key handle passes are provided on a front wall portion of the lock shaft, and a stopper plate is fixed to a rear end portion of the lock shaft. A locking plate that is pushed back by the handle and moves backward is non-rotatably fitted to the front end of the locking shaft, and a locking claw of the locking plate is provided on the back surface of the front wall of the fixed body with which the retaining projection of the key handle engages. A locking groove is provided for engaging the locking portion, and the locking plate is urged forward by a spring toward the front wall portion of the fixed body.

In this conventional device, the key handle is inserted into the key hole of the fixed body by aligning the retaining projection of the key handle with the insertion / removal cutout of the fixed body, and the locking plate is moved backward by the key handle. When the key handle is turned in a predetermined direction when the locking claw part of the lock board has escaped from the locking groove of the fixed body, the locking shaft rotates together with the key handle, and the stopper plate is received by the metal holder on the fixed frame side. Break away from At this time, since the retaining protrusion of the key handle is engaged with the back surface of the front wall portion of the fixed body, the key handle is connected to the fixed body, and the door is opened by pulling the key handle toward the user. .

However, the connection between the key handle and the fixed body, which is established via the retaining projection, is unstable. When the hand is released from the key handle after the door is opened, the key handle tends to fall off. When you fall out,
Since it is necessary to perform the operation of inserting and rotating again, the operability is not good. Also, after unlocking at the start of work,
In applications where it is necessary to open and close the door while maintaining the unlocked state during normal business hours, the key handle that protrudes greatly from the door surface is not an obstacle as it simply does not work as a means for opening and closing operation It is.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to use a key handle at the time of operation of locking and unlocking a door, and to protrude more from the door surface than the key handle when operating the door in an unlocked state. An object of the present invention is to provide a lock handle device for a removable door, in which the head of the fixed main body with less trouble is used as a handle.

[0006]

In the lock handle device for a removable door according to the present invention, a fixed body 2 fixed to the door 1 is provided.
The lock shaft 3 is rotatably accommodated so as not to move in the axial direction,
A key hole 6 into which a key handle 5 for rotationally driving the locking shaft 3 is inserted is provided in a front wall portion 4 of the fixed main body 2 and an arc-shaped insertion / removal notch 8 through which a retaining projection 7 on the peripheral surface of the key handle passes. A lock plate 9 is fixed to the rear end of the lock shaft 3, and a lock plate 10, which is pushed by the key handle 5 and retreats, is non-rotatably fitted to the front end of the lock shaft 3. A locking groove 12 with which a locking claw portion 11 of a locking board 10 is engaged is formed on the back surface of the front wall portion 4 of the fixed main body 2 with which the retaining projection 7 of the key handle 5 is engaged.
An arc-shaped holding step surface 13 is provided at a position one step backward from the locking groove 12 and in which the locking claw portion 11 of the locking plate 10 abuts, and the locking plate 10 is fixed to the fixed main body 2 by a spring 14. The front wall 4 is urged forward. The first insertion / removal position in which the locking claw 11 of the locking board 10 is engaged with the locking groove 12 of the fixed body 2, and the locking claw 11 of the locking board 10 is
The opening angle of the insertion notch 8 of the fixed main body 2 is set to be larger than the width of the retaining projection 7 so that the key handle 5 can be inserted and removed at any one of the second insertion / removal positions in contact with the holding step surface 13 of FIG. Then, the head 15 of the fixed main body 2 is formed larger than the body 16 that contacts the front surface of the door 1.

As shown in FIGS. 1 to 4, when the stopper plate 9 is engaged with the receiving member 18 on the fixed frame 17, the key handle 5 is pulled out from the key hole 6 of the fixed body 2. As shown in FIGS. 6 and 7, the locking claw 11 of the locking plate 10 is engaged with the locking groove 12 on the fixed body 2 side. On the other hand, it is restrained from rotating. The engagement state between the locking claw portion 11 of the locking plate 10 and the locking groove 12 of the fixed main body 2 is held by the forward bias of the spring 14.

In order to release the lock of the door 1 with respect to the fixing frame 17 and open the door 1, as shown in FIG. 8, the retaining projection 7 is aligned with the insertion notch 8 of the fixing main body 2. The key handle 5 is inserted into the keyhole 6 of the fixed main body 2, and the lock plate 10 is moved backward in the axial direction of the lock shaft 3. As shown in FIGS. 9 and 10, the locking claw 11 of the locking plate 10 comes out of the locking groove 12 of the fixed body 2 by this pushing, so that the rotation constraint of the locking shaft 3 with respect to the fixed body 2 is released. Is done. At this stage, the locking claw portion 11 of the locking board 10 has reached the same plane position as the retaining step surface 13 of the fixing main body or a position slightly behind the same.

Then, the key handle 5 is moved in a predetermined direction (FIG. 1).
0, a clockwise direction in FIG. 11 and a clockwise direction in FIG. 11), the locking claw 11 of the lock plate 10 becomes the holding step surface 13 of the fixed body 2 as shown in FIGS. At the end of rotation of the key handle 5, the locking claw 11 faces the end of the retaining step surface 13. At this stage, the key handle 5 is connected to the fixed body 2 because the retaining projection 7 of the key handle 5 is engaged with the back surface of the front wall portion 4 of the fixed body 2 as shown in FIG. . Therefore, the door 1 is opened by pulling the key handle 5 toward the user.

When the door 1 is locked to the fixed frame 17 after the opening and closing operation of the door 1 is completed, the key handle 5 is turned in the opposite direction by the same angle in the opposite direction, and the locking claw of the locking plate 10 is locked. Part 1
1 returns to the first insertion / removal position facing the locking groove 12 of the fixed body 2. In this position, the retaining protrusion 7 of the key handle 5 is no longer engaged with the back surface of the front wall portion 4 of the fixed main body 2 and comes to the position facing the insertion notch 8 of the fixed main body 2. When the user releases his / her hand or stops pressing, the key handle 5 is ejected from the keyhole 6 of the fixed main body 2 by the bias of the spring 14. The lock plate 10 moves forward in parallel with the pushing of the key handle 5, and FIG.
As shown in FIG.
The locking shaft 3 engages with the locking groove 12 of the fixed body 2 in a state where the stopper plate 9 is engaged with the receiving metal 18 on the fixed frame 17 side.
Is locked again.

When the head 15 of the fixed main body 2 is used instead of the key handle 5 as a handle means, between the unlocked position shown in FIG. 11 and the locked position (first unplugging position) shown in FIG. Reverse rotation to the set second insertion / removal position. In this second insertion / removal position, the retaining projection 7 of the key handle 5 does not engage with the back surface of the front wall 4 of the stationary body 2 as shown in FIG.
17 and 19, the locking claw portion 11 of the lock plate 10 comes into contact with the holding step surface 13 of the fixed main body 2 by the forward bias of the spring 14, as shown in FIGS. I have.

Therefore, the key handle 5 can be pulled out from the key hole 6 of the fixed main body 2, but even if the key handle 5 is pulled out, the lock shaft 3 is kept in the unlocked state, and as shown in FIG. The plate 9 is at a position retracted in the space behind the door 1 so as not to hinder opening and closing of the door 1. After the key handle 5 is pulled out, the door 1 is opened between the head 15 of the fixed body 2 and the front of the door 1 as shown in FIG.
9 and 20 are inserted. That is, the head 15 of the fixed main body 2 is used as a knob.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, a fixed body 2 is shown.
The head part 15 and the body part 16 are formed separately, and as shown in FIG. 12, the positioning protrusion 21 on the front face of the body part 16 is fitted into the positioning recess 21 on the back face of the disk-shaped head 15. Are connected by a hexagon socket head cap screw 23. The back of the intermediate flange portion 24 of the locking shaft 3 is
Of the central shaft hole 25 at the intermediate step surface 26. A short cylindrical shaft holder 27 fitted on the locking shaft 3 through the central through hole 28 and abutting on the front surface of the intermediate flange portion 24.
Abuts against the back of the head 15. The locking shaft 3 is prevented from moving in the axial direction by the intermediate flange 24 and the shaft holder 27. A drain groove 30 for draining water is formed in the front concave portion 29 of the body portion 16 that has received the shaft holder 27.

A detent 32 is provided on the back of the body 16 in a detent hole 31 on the side of the door 1, and a screw cylinder is inserted in a mounting hole 35 of the door 1 in the center of the back of the body 16. The part 33 is provided in a protruding manner. The fixed main body 2 is fixed to the door 1 by tightening the door 1 between the nut 34 fitted in the screw cylinder 33 and the front flange of the body 16. The stopper plate 9 is fitted to the rear end corner shaft portion 37 of the locking shaft 3 at the base end portion square hole 36, and is fixed to the locking shaft 3 by a bolt 38. The urging spring 14 of the lock plate 10 is formed of a compression coil spring, and is inserted between the shaft holder 27 and the lock plate 10 in a state of being fitted to the lock shaft 3.

The insertion end of the key handle 5 has a circular cross section, and two retaining projections 7 are provided on the upper and lower sides in diameter. Correspondingly, the keyhole 6 of the fixed main body 2 is also circular, and two insertion / removal cutouts 8, two locking grooves 12, and two retaining cross sections 13 are provided. The front half 40 of the locking shaft 3 has a triangular cross section, and is fitted in the triangular through hole 39 of the lock plate 10. The insertion end of the key handle 5 is provided with a triangular receiving hole 41 into which the front end of the locking shaft 3 enters. Key handle 5
Has a positioning flange 5 for defining the insertion depth into the keyhole 6.
2 is provided. An annular groove 43 is provided in a middle portion of the locking shaft 3 having a circular cross section, and an O-ring 42 is inserted therein. The lock plate 10 has a larger diameter than the keyhole 6, and also serves as shutter means for closing the keyhole 6 from the back side at the locking position.

In this embodiment, the locking shaft 3 rotates 90 degrees between the locking position (first insertion / removal position) shown in FIG. 1 and the unlocking position (non-removable position) shown in FIG. Of 45
The degree position is set to be the second insertion / removal position. The holding step surface 13 of the fixed main body 2 is formed in an arc shape centering on the locking shaft 3, and the opening angle of the holding step surface 13 is set to be slightly more than 90 degrees. These set angles are not limited to the above, and can be increased or decreased as appropriate according to the target device or the like.

The key handle 5 is divided into a main body portion 44 inserted into the keyhole 6 and a grip portion 45, and both are connected by a transverse pivot 46. The click pin 48 protruded and urged by the compression coil spring 47 is housed in the pin hole 51 on the main body portion 44 side, and the grip portion 45 side is provided with locking concave portions 49 and 50 for engaging and disengaging the click pin 48. The arrangement angle of the locking concave portions 49 and 50 about the transverse pivot 46 is set to 90 degrees, and when the click pin 48 is engaged with the locking concave portion 49, as shown in FIG. It is arranged parallel to the front surface of the door 1. When the click pin 48 is engaged with another locking recess 50, the click pin 48 shown in FIG.
Are arranged at right angles to the front surface of the door 1 as shown by a dashed line in FIG.

[0018]

As described above, in the removable door lock handle device of the present invention, the first insertion / removal in which the locking claw portion 11 of the locking board 10 is engaged with the locking groove 12 of the fixed body 2. The key handle 5 can be inserted and removed at any one of a position and a second insertion / removal position where the locking claw portion 11 of the lock plate 10 is in contact with the holding step surface 13 of the fixed body 2. The opening angle of the insertion notch 8 is set to be larger than the width of the retaining projection 7, and the head 15
Is formed larger than the body portion 16 which is in contact with the front surface of the door 1, and the key handle 5 is used for the operation of locking and unlocking the door 1 while the door 1 is repeatedly opened and closed in the unlocked state. Uses the head 15 of the fixed main body 2, which has a smaller amount of protrusion from the door surface than the key handle 5, as a handle, so that it does not hinder both the locked state and the unlocked state of the door. In addition, the amount of protrusion of the handle means from the door surface can be suppressed to a necessary minimum, and the handle means can be selectively used in an optimal form according to the attached device.

[Brief description of the drawings]

FIG. 1 is a front view of a lock handle device for a removable door according to one embodiment of the present invention in a closed and locked state.

FIG. 2 is a rear view of the lock handle device when the door is locked.

FIG. 3 is a right side view of the lock handle device when the door is closed and locked.

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

FIG. 5 is a sectional view taken along line BB of FIG. 3;

6 is a sectional view taken along line CC of FIG. 4;

FIG. 7 is a sectional view taken along line DD of FIG. 4;

FIG. 8 is a longitudinal sectional view in a state where a key handle is inserted into the lock handle device.

FIG. 9 is a sectional view taken along line EE of FIG. 8;

FIG. 10 is a sectional view taken along line FF of FIG. 8;

FIG. 11 is a front view in a state where a key handle inserted into the lock handle device is rotated to an unlock position.

FIG. 12 is a sectional view taken along line GG of FIG. 11;

13 is a sectional view taken along line HH of FIG.

FIG. 14 is a sectional view taken along line II of FIG. 12;

FIG. 15 is a vertical sectional view of a main part showing a moving process of a locking claw portion of a lock board in the lock handle device.

FIG. 16 is a front view in a state where the key handle inserted into the lock handle device is rotated to a second insertion / removal position.

FIG. 17 is a sectional view taken along line JJ of FIG. 16;

18 is a sectional view taken along line KK of FIG.

19 is a sectional view taken along line LL of FIG. 17;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door 2 Fixed main body 3 Locking shaft 4 Front wall part of fixed main body 5 Key handle 6 Key hole of fixed main body 7 Retaining projection of key handle 8 Notch insertion / removal cutout of fixed main body 9 Stopper plate 10 Locking plate 11 Locking plate Locking claw portion 12 Locking groove of fixed body 13 Retaining step surface of fixed body 14 Spring for urging lock plate 15 Head of fixed body 16 Body of fixed body

Claims (1)

(57) [Claims] A locking shaft attached to a fixed body fixed to the door;
Is fixed so as to be rotatable and immovable in the axial direction.
Handle 5 for rotating the locking shaft 3 on the front wall 4 of the vehicle
A key hole 6 into which the key is inserted, and an arc-shaped insertion / removal notch 8 through which a retaining protrusion 7 on the peripheral surface of the key handle passes, a stopper plate 9 is fixed to the rear end of the locking shaft 3, The locking plate 10 which is retracted and moved is non-rotatably fitted to the front end of the locking shaft 3, and the locking plate is fixed to the rear surface of the front wall portion 4 of the fixed main body 2 with which the retaining projection 7 of the key handle 5 engages. 10
Locking groove 12 with which the locking claw portion 11 is engaged, and the locking groove 12
Locking claw portion 1 of locking plate 10 at a position further retracted by one step
1 is provided with an arcuate holding step surface 13 against which the lock plate 10 is urged forward by a spring 14 toward the front wall portion 4 of the fixed body 2, and the locking claw portion 11 of the lock plate 10 is fixed. The first insertion / removal position in which the locking groove 12 of the main body 2 is engaged and the second insertion / removal position in which the locking claw portion 11 of the locking plate 10 is in contact with the holding step surface 13 of the fixed main body 2 The opening angle of the insertion notch 8 of the fixed main body 2 is set to be larger than the width of the retaining projection 7 so that the key handle 5 can be inserted and removed at any one side, and the head 15 of the fixed main body 2 contacts the front surface of the door 1. A lock handle device for an insertion / removal type door which is formed larger than the body portion 16 in contact therewith.