JP2000320197A - Locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking device making it difficult for a detachable handle for locking, to be inserted into a handle insert passage. SOLUTION: A locking device is formed so that a first rotating member 3 is rotated to engage or disengage a claw fitting 10 from a fixed frame when a handle is inserted and rotated. A covering member 4 is fixed to a front end part 3a of the first rotating member 3 so as to form a space covering the front end part 3a and extending circumferentially between the covering member and the front end. A second insert port 4a leading to a first insert port 3c in which the handle of the rotating member is inserted is formed in the covering member 4. Then, a blocking member 6 capable of blocking the insertion of the handle is installed between the first insert port 3c and the second insert port 4a, and the blocking member 6 is released by the second rotating member 5 capable of being rotated by a key, thus enabling the handle to be inserted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a locking device.

[0002]

2. Description of the Related Art A locking device disclosed in Japanese Utility Model Laid-Open Publication No. 6-67741 includes a locking member attached to a door and a handle that can be inserted into and removed from the locking member. The locking member is
It is formed by a fixing member fixed to the door and a turning member rotatably mounted inside the fixing member. A handle insertion port through which a handle is attachable to a rear end portion of the rotating member that is exposed to the inside of the door, and a handle that can be inserted into and pulled out of the front end portion of the door that is exposed to the outside of the door in parallel with a front surface of the door. And a handle insertion path extending radially inward of the rotation member from the handle. The fixed member and the rotating member can be disengaged from each other by a lock mechanism interposed between the members.

[0003] When the handle is inserted into the lock member, the lock mechanism is released by release means such as a key groove or a key ridge formed in the handle. When the inserted handle is turned, the turning member turns in both the forward and reverse directions, so that the locking and unlocking operations can be performed.

[0004]

In the locking device, the locking mechanism may be released by imitating the release means of the handle. Further, when foreign matter such as paper dust and gum enters the handle insertion path, the handle cannot be inserted unless the foreign matter is removed. Removal of the foreign matter is troublesome and may cause a failure of the device.

[0005] It is an object of the present invention to provide a locking device which makes it difficult to unlock and enter a foreign substance into an insertion path.

[0006]

In order to solve the above-mentioned problems, the present invention is premised on a locking member attached to a door and a handle for locking and unlocking the locking member. A locking member fixed to the door, and a first member rotatably mounted on the fixing member.
A rotating member, the first rotating member having a front end located outside the door, and a rear end located inside the door and capable of attaching a claw fitting, A first insertion port through which the handle can be inserted and withdrawn in parallel with the front surface of the door, and an insertion path extending radially inward of the first rotating member from the first insertion port are formed at the front end, The handle in the insertion path is engaged with the first turning member, and the turning of the handle causes the first turning member to turn clockwise and counterclockwise. This is a locking device that can be disengaged from a fixed frame to which a door can be opened and closed.

[0007] On this premise, the present invention is characterized in that a front end of the first rotating member has a gap covering the front end and extending in a direction around the front end between the front end and the front end. The cover member is fixed so as to form a second insertion port outside the first insertion port, the second insertion port communicating with the first insertion port, and the first rotation member is rotated. A second rotating member capable of rotating clockwise and counterclockwise around the rotating shaft from the outside of the covering member is mounted on a shaft, and the second rotating member extends inward of the covering member. At the inner end of the second pivoting member, extends radially outward of the second pivoting member, and pivots in the gap clockwise and counterclockwise with the rotation of the second pivoting member, By the turning, the space between the first insertion port and the second insertion port can be openably blocked. In the blocking member is mounted.

[0008] In one embodiment of the present invention, the blocking member has a base end attached to an inner end of the second pivoting member, and a second end of the second pivoting member from the base end. An arm portion extending radially outward, and a tip portion having a tip of the extended arm portion bent at about 90 °, wherein the tip portion is pivotable between the first and second insertion ports. is there.

As another example of the embodiment of the present invention,
The outer shape of the covering member is hemispherical.

[0010] As another example of the embodiment of the present invention,
The second rotating member has a keyhole extending from the outside of the covering member in the direction of the rotating shaft, and when the key is inserted into the keyhole, the covering member and the second member are released by releasing means formed in the key.
The lock mechanism interposed between the rotation member and the rotation member is released, and the second rotation member can be rotated by the rotation of the key. When the key is removed, the lock mechanism operates to activate the lock mechanism. The second rotation member cannot rotate.

As another example of the embodiment of the present invention,
The fixing member and the first rotating member are detachable from each other by a lock mechanism interposed between the members, and are formed at an insertion portion of the handle when the handle is inserted into the first insertion path. The lock mechanism is released by the released release means, and the first rotating member can rotate with respect to the fixed member.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the locking device according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view of a door 11 that opens and closes.
FIG. 4 is a perspective view of the locking device that is attached by being penetrated from the outside to the inside of the door, in which a door 11 and a fixing frame 12 are shown in a cutaway view. The locking device includes a locking member 1 attached to the door 11.
And a handle 7 that can be inserted into and removed from the locking member 1 and is used for locking and unlocking the locking device, and a key 8 that can be inserted into and removed from the locking member 1. In the figure, the handle 7
And the key 8 are removed from the locking member 1, the claw fitting 10 of the locking member 1 is engaged with the fixed frame 12 from the inside, and the door 11 closed with respect to the fixed frame 12 is locked. It is in. When the handle 7 is inserted into the locking member 1 from the arrow Y direction in parallel with the outer surface of the door 11 and turned in the arrow X direction,
The claw fitting 10 also turns in the direction of the arrow X to disengage with the fixed frame 12, and the door 11 is unlocked.

The handle 7 has an insertion portion 7a for the locking member 1. The insertion portion 7a has a concave groove 7b (release means) extending in the width direction of the handle 7 on a surface facing the outer surface of the door 11. Is formed. On the side of the key 8, a recess 8a (release means) is formed which is recessed in the thickness direction of the key 8.

FIG. 2 is a sectional view taken along the line AA of FIG. 1 and shows a state in which the washer 14 and the bolt 15 located behind the claw fitting 10 and the second rotating member 5 are not cut.
The locking member 1 includes a fixing member 2 to be fixed to the door 11, a first turning member 3 rotatably mounted on the fixing member 2,
A coating member 4 rotatable with the rotation member 3 and covering the front end 3a of the first rotation member 3; and a rotation member mounted coaxially with the first rotation member 3 and rotatable inside the coating member 4. The second
Rotating member 5 and shielding member 6 attached to second rotating member 5
And formed.

The fixing member 2 has a front end 2a located outside the door 11, a rear end 2b located inside the door 11, and a hollow portion 2c penetrating between the front and rear ends 2a, 2b.
A protruding portion 2 d that regulates the rotation range of the first rotation member 3 extends axially rearward from the end surface of the fixed member 2 at the rear end 2 b. The fixing member 2 is attached such that a nut 13 is screwed onto a screw formed on a peripheral surface of a rear end portion 2b of the fixing member 2, and the door 11 is sandwiched between the nut 2 and the flange 2e formed on the front end portion 2a. ing.

The first rotating member 3 is provided in the hollow portion 2 of the fixed member 2.
c, which is rotatably inserted through the door 11 and is located outside the door 11 and extends forward from the front end 2a of the fixed member 2; And a rear end 3b exposed from the end 2b. A first insertion port 3c through which the handle 7 can be inserted and removed is formed in the front end 3a in parallel with the outer surface of the door 11, and an insertion path extends radially inward of the first rotating member 3 from the first insertion port 3c. 3d is extended. A stopper (not shown) is provided at the rear end 3b so as to abut against the protrusion 2d of the fixed member 2 from the circumferential direction at the rotation start point and the rotation end point when the first rotation member 3 rotates. And a claw fitting 1 located behind the ring 16
0 is attached to the rear end 3b by a bolt 15 screwed through a washer 14 in a state where the first rotating member 3 does not rotate in the circumferential direction.

The fixed member 2 and the first rotating member 3 can be disengaged from each other by a locking mechanism described below interposed between the members 2 and 3, and when the locking mechanism is released, the first rotating member 3 is rotated. The member 3 is configured such that the outer peripheral surface of the first rotating member 3 is the hollow portion 2 of the fixed member 2.
In a state in which it is in sliding contact with the peripheral surface of FIG. A part of the pin tumbler 20 is exposed in the insertion path 3d of the first rotating member 3.

The covering member 4 has a hemispherical outer shape,
The handle 7 can be inserted and withdrawn, and the first rotating member 3
There is a second insertion port 4a located outside the insertion port 3c and communicating with the first insertion port 3c. The covering member 4 and the first rotating member 3 are integrally assembled at a position where they come into contact with each other from the front-rear direction, and the covering member 4 is rotated with the rotation of the first rotating member 3.
Also rotates. A gap 9 is formed between the covering member 4 and the first rotating member 3.

The second pivoting member 5 has an end 5a exposed from the covering member 4 and an inner end located near the front end 3a of the first pivoting member 3 and extending from the end 5a to the inside of the covering member 4. End 5b
And A key hole 5c (see FIG. 1) through which the key 8 can be inserted and withdrawn axially rearward of the second rotating member 5 is formed at the end 5a, and the second rotating member 5 is formed at the inner end 5b. And a C-shaped retaining ring 17 for preventing the shielding member 6 from being pulled out.
A C-shaped retaining ring 18 for preventing the second rotating member 5 from being pulled out of the covering member 4 is attached to the peripheral surface of the second rotating member 5.

The covering member 4 and the second rotating member 5 can be disengaged from each other by a known cylinder lock mechanism (not shown) interposed between the members 4 and 5. Second rotating member 5
When the key 8 is inserted into the key hole 5c, the concave portion 8a formed in the key 8 pushes each of the pins mounted in the hole of the second rotating member 5, and the hole of the covering member 4 and the second rotation are performed. The contact portion between the driver and the pin that straddles the hole of the member 5 moves to the sliding surface between the covering member 4 and the second rotating member 5. The driver is housed in the hole of the covering member 4, and the engagement between the covering member 4 and the second rotating member 5 is released. When the lock mechanism is released by the key 8, the second rotation member 5 can rotate with respect to the covering member 4 with the rotation of the key 8.

The shielding member 6 is provided at the inner end 5 of the second rotating member 5.
b, and a second end from the base end 6a.
It has an arm portion 6b extending radially outward of the rotating member 5 and a tip portion 6c located in the gap 9 and bent toward the door 11 by about 90 °. When the second rotating member 5 rotates, the distal end 6c of the shielding member 6 rotates in the XX 'direction (see FIG. 3). In the figure, the tip 6 c of the shielding member 6 is
Between the first insertion opening 3c and the second insertion opening 4a of the covering member 4.

FIG. 3 is a sectional view taken along the line BB of FIG. 2 and 90 degrees in the direction of the arrow X to open the first insertion slot 3c.
The imaginary line shows the shielding member 6 when turned and the handle 7 inserted into the insertion path 3d of the first rotating member 3. The gap 9 extends between the first rotating member 3 and the covering member 4 in an arc shape in a direction around the members 3 and 4. The distal end portion 6a of the shielding member 6 extends in an arc shape along the gap 9 and can turn the gap 9 in both forward and reverse directions indicated by arrows XX 'in a range of about 90 degrees. The dimension of the distal end portion 6a extending in the circumferential direction around the gap 9 is slightly larger than that of the insertion opening 3c of the first rotating member 3, and the distal end portion 6a is connected to the insertion opening 3c of the first rotating member 3 and the covering member 4. The entire insertion opening 3c can be shut off when it is located between the first insertion opening 3a and the second insertion opening 4a.

FIG. 4 is a view showing a cross section of the lock mechanism interposed between the fixing member 2 and the first rotating member 3. In the figure, the insertion portion 7a of the handle 7 indicated by a virtual line is inserted into the insertion path 3d. The fixed member 2 and the first rotating member 3
Holes 20 and 21 extending in the axial direction of the rotating member 3 are formed, and a compression spring 22 is loaded in the hole 20 of the fixing member 2. At the end of the compression spring 22, a driver 23 capable of straddling each of the holes 20 and 21 of the fixed member 2 and the first rotating member 3 is mounted.
, A pin tumbler 24 is loaded. Driver 2
When the third member 3 straddles the fixed member 2 and the first rotating member 3, the rotation of the first rotating member 3 with respect to the fixed member 2 is prevented.

In the figure, the concave groove 7b of the handle 7 inserted into the insertion path 3d pushes the pin tumbler 24 rearward in the axial direction of the first rotating member 3. The contact surface between the driver 23 and the pin tumbler 24 moves to the sliding contact surface between the fixed member 2 and the first rotating member 3 so that the first rotating member 3 can rotate with respect to the fixed member 2. is there. In FIG. 1, when the handle 7 is turned clockwise to turn the first turning member 3, the claw fitting 10 is disengaged from the fixed frame 12, and the door 11 can be unlocked from the fixed frame 12.

In the intermediate portion between the rotation start point and the rotation end point, the pin tumbler 24 straddling the concave groove 7b and the hole 21 of the first rotation member 3 does not move leftward in the drawing.
The handle 7 cannot be pulled out. When the handle 7 is rotated to the end point, the positions of the hole 21 formed in the fixing member 2 and the pin tumbler 24 coincide with each other again as shown in FIG.
The pin tumbler 24 so as to separate from the first rotating member 3.
Of the handle 7
Can be removed from the insertion path 3d.

The turning range of the handle 7 is the turning range of the first turning member 3, and is restricted by the protrusion 2 d of the fixed member 2 inside the door 11 and the stopper of the rotation restricting ring 16. I have.

In such a locking device, the lock cannot be unlocked unless a handle 7 suitable for the device is inserted. In addition, the handle 7 uses the key 8 to
Is turned and the shielding member 6 is turned, and the insertion port 3 is rotated.
Unless c is released, it cannot be inserted. Since this locking device can be double locked in this way,
High safety.

In the locking member 1, since the outer shape of the covering member 4 located outside the door 11 as shown in the illustrated example has a hemispherical shape, it is difficult to sandwich the covering member 4 with a tool.
An accident in which the covering member 4 is damaged by using such a tool can be prevented.

[0030]

According to the locking device of the present invention, the locking mechanism interposed between the covering member and the second rotating member is released to turn the shielding member so that the handle can be inserted into the insertion path. Must be compared with a locking device having only a locking mechanism interposed between the fixed member and the first rotating member,
Its unlocking is difficult. In the locking device according to the present invention, if the shielding member blocks the first insertion port of the first rotating member and the second insertion port of the covering member, dust and other foreign matter enter the insertion path. Can be prevented. In the locking device, by making the outer shape of the covering member located outside the door into a hemispherical shape, it becomes difficult to sandwich it with a tool.

[Brief description of the drawings]

FIG. 1 is a perspective view of a locking device.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a diagram showing a cross section of a lock mechanism interposed between a fixing member and a first rotating member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Locking member 2 Fixing member 3 1st rotation member 3a Front end 3b Rear end 3c 1st insertion opening 3d Insertion path 4 Covering member 4a 2nd insertion opening 5 2nd rotation member 5b Inner end 5c Keyhole 6 Shielding member 6a Base end 6b Arm 6c Tip 7 Handle 7a Insertion section 7b Groove (release means) 8 Key 8a Recess (release means) 9 Void 10 Claw fitting 11 Door 12 Fixed frame

Claims (5)

[Claims] 1. A locking member attached to a door, and a handle for locking and unlocking the locking member, the locking member being fixed to the door, and being rotated by the fixing member. A first rotating member movably mounted, and
The first rotating member has a front end located outside the door, and a rear end located inside the door and to which a claw fitting can be attached, and the front end has a front surface of the door. A first insertion port through which the handle can be inserted and withdrawn, and an insertion path extending radially inward of the first rotating member from the first insertion port. The handle in the insertion path is The claw fitting is attached to the door so that the door can be opened and closed as the first turning member is rotated in the clockwise and counterclockwise directions by the turning of the handle. In the locking device capable of being disengaged from a fixed frame, a front end portion of the first pivoting member covers the front end portion and forms a gap extending between the front end portion and the front end portion in a direction around the front end portion. Fixing the covering member as described above,
A second insertion opening communicating with the first insertion opening is formed outside the first insertion opening, and a clock is formed on the rotation axis of the first rotation member from the outside of the covering member around the rotation axis. A second rotating member that can be rotated in the counterclockwise direction and the counterclockwise direction. The second rotating member is attached to an inner end of the second rotating member that extends inward of the covering member. Extending radially outward of the second pivoting member and pivoting in the gap in the clockwise and counterclockwise directions with the rotation of the second pivoting member. The apparatus is characterized in that a blocking member capable of releasably blocking is mounted. 2. A base end, wherein the blocking member is attached to an inner end of the second rotating member, and an arm extending from the base end radially outward of the second rotating member. A tip of the extended arm portion bent about 90 °,
The apparatus according to claim 1, wherein the tip is pivotable between the first and second insertion ports. 3. The apparatus according to claim 1, wherein the outer shape of the covering member is hemispherical. 4. The second rotating member has a keyhole extending from the outside of the covering member in the direction of the rotating shaft, and when a key is inserted into the keyhole, the covering member is formed by a release means formed on the key. The lock mechanism interposed between the second rotation member and the second rotation member is released, the second rotation member can be rotated by the rotation of the key, and when the key is removed, the lock mechanism is released. The device according to any one of claims 1 to 3, wherein the second rotation member is operated so as not to rotate. 5. The fixing member and the first rotating member,
When the handle is inserted into the first insertion path, the lock mechanism is released by release means formed in an insertion portion of the handle, and the lock mechanism is released. The apparatus according to claim 1, wherein the first rotation member is rotatable with respect to the member.