JPH08105257A - Detachable lock - Google Patents

Abstract

PURPOSE: To solve the problems with a vicious duplication occurring when a key is missed or stolen by providing a detachable type lock capable of removing a whole lock maid body from a door panel. CONSTITUTION: A head part 3 of a lock main body 5 is close-fitted fixedly into an inserting hole 2 of a door panel 1, and a flange part 4 of the lock main body 5 is made in contact with the front surface la of the door panel 1. Also a lock tube body 9 is close-fitted to the body part 8 of the lock main body 5, and fixed to the rear end part of a rotor 7. Then the receiving hole 11 of the lock tube body 9 is installed in the receiving metal plate 12 installed fixedly to a fixed frame body 10, and an inserting hole 2 and the receiving hole 11 are formed in a non-complete round shape in which a difference is set between lengths in short- and long-axis directions crossed at a specified angle. In addition, the cross section external forms of the head part and the lock tube body are formed identical, and the lock tube body 10 is rotated with a key by a specified angle so as to engage the front end surface 9a of the lock tube body 9 with the rear surface 12a of the receiving metal plate 12 by an amount of dimensional difference.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock which is removably provided in a hotel safe or a rocker of a sports club used by many people.

[0002]

2. Description of the Related Art In a conventional lock, a lock body inserted into a receiving hole of a door panel is fastened and fixed to the door panel with a nut, and a stopper plate is attached to a rear end portion of a rotor housed in the lock body with a bolt. It is fixed, inserts a predetermined key into the key hole of the rotor, moves the lock member to the unlocked position, and rotates the rotor with the key, so that the stopper plate is disengaged from the receiving plate on the fixed frame side. , The door panel is locked and unlocked with respect to the fixed frame.

[0003]

However, in such a lock in which the lock body is fixed to the door panel, only a particular key can be used for a particular lock body, and therefore a malicious person who has lost the key or has stolen the key. There is a high risk of unauthorized unlocking due to, and there has always been a risk of unauthorized duplication of keys for unauthorized use.

Therefore, an object of the present invention is to provide a removable lock which can be removed together with a lock body from a door panel, and solve the above-mentioned problems associated with malicious duplication in the case of a lost key or theft.

[0005]

The detachable lock of the present invention will be described below with reference to the reference numerals in the accompanying drawings.
The head 3 is non-rotatably fitted into the insertion hole 2 of the door panel 1, and the outer flange portion 4 connected to the head 3 has a front surface 1 of the door panel 1.
a lock body 5 abutting against a; a rotor 7 rotatably housed in the lock body 5 and locked to the lock body 5 by a lock member 6; fitted to a body portion 8 of the lock body 5; A locking cylinder 9 fixed to the rear end portion so as to rotate integrally; and a receiving plate 12 fixed to the fixed frame body 10 and provided with a receiving hole 11 through which the locking cylinder 9 comes in and out on the back side. A key 14 that is inserted into the key hole 13 of the rotor 7 and moves the lock member 6 to the unlock position.
Consists of

The insertion hole 2 and the receiving hole 11 are formed in a non-round shape in which a difference between the short axis direction and the long axis direction intersecting at a constant angle is set, and the head 3 and the locking cylinder 9 are formed. A locking cylinder 9 having the same outer cross-sectional outer shape and provided with the insertion hole 2 and the receiving hole 11 in the same direction as each other and protruding from the receiving hole 11
Is rotated by the fixed angle by the key 14, and the front end surface 9a of the locking cylinder 9 is moved by the size difference by the rear surface 12 of the receiving plate 12.
engage a.

[0007]

When the door panel 1 is locked to the fixed frame body 10, the head 3 of the lock body 5 and the locking cylinder 9 are aligned with the insertion holes 2 of the door panel 1, that is, the head. 3 and the short axis direction of the lock cylinder 9 and the short axis direction of the insertion hole 2 are aligned, and the long axis direction of the head 3 and the lock cylinder 9 and the insertion hole 2
The lock main body 5 and the lock cylinder 9 are fitted into the insertion holes 2 from the front side with their long axis directions aligned.

After the locking cylinder 9 is projected to the rear surface side of the metal receiving plate 12, the key is inserted into the key hole 13 of the rotor 7 to rotate the rotor 7 at a predetermined angle in a predetermined direction, that is, the locking cylinder 9. The short axis direction and the long axis direction of the insertion hole 2 intersect and the locking cylinder 9
When it is rotated to an angle at which the major axis direction of the and the minor axis direction of the insertion hole 2 intersect, as shown in FIGS.
The front end surface 9a of the above is engaged with the rear surface 12a of the receiving plate 12 by a dimensional difference between the short axis direction and the long axis direction. In this rotation operation, the lock body 5 is prevented from rotating because the head 3 is engaged with the insertion hole 2 of the door panel 1.

In this way, the outer collar portion 4 of the lock body 5 abuts on the front surface 1a of the door panel 1, and the rear surface 12a of the metal plate 12 is received.
Since the front end surface 9a of the lock cylinder 9 comes into contact with the lock body 5, the lock body 5 is fixed to the door panel 1, and at the same time, the fixed frame body 10 is fixed.
The door panel 1 will be locked against.

When the door panel 1 is unlocked, the key 1
4 is rotated in the opposite direction to the above, the short axis direction of the lock cylinder 9 matches the short axis direction of the insertion hole 2, and the long axis direction of the lock cylinder 9 becomes the long axis direction of the insertion hole 2. The lock cylinder 9 is rotated until they match. After that, by pulling the lock body 5 and the lock cylinder 9 forward, they are pulled out from the receiving hole 11 and the insertion hole 2.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In the illustrated embodiment, the rear end portion 15 of the rotor 7 is shown.
Is formed into a so-called oval-shaped cross section in which both sides of the circle are cut off by parallel lines, and an oval-shaped recess 16 is also provided in the inner bottom of the locking cylinder 9. By fitting the concave portion 16 in the rotor rear end portion 15, the locking cylinder 9 is fixed to the rotor 7
The rotor rear end portion 15 is joined so as not to rotate with respect to
The rotor 7 by means of bolts 18 screwed into the screw holes 17 of
Is fixed.

The inner peripheral surface of the locking cylinder 9 is formed in a perfect circle shape, and the outer shape of the body portion 8 of the lock body 5 is also formed in a perfect circle shape. The outer shape of the head 3 of the lock body 5 and the lock cylinder 9 is formed into an oval shape, and the insertion 2 of the door panel 1 and the metal receiving plate 1 are formed.
The second receiving hole 11 is also formed in an oval shape. It is also possible to adopt a rectangle or a rhombus as these shapes. In the above embodiment, the intersection angle between the minor axis direction and the major axis direction is set to 90 degrees, but this can be increased or decreased as appropriate.

With this detachable lock, when there are a plurality of objects to be locked, one lock unique to each object is not always attached and placed, and a plurality of locks are prepared for the user each time locking is required. One of the lock groups is given, and the user attaches it to the door panel of the object such as a rocker he / she uses only when necessary.

In the present embodiment, the cross section of the rear end portion of the rotor has an oval shape in order to mount the locking cylinder 9 in a non-rotatable manner.
A quadrangular or hexagonal cross-section can be adopted as the cross-sectional shape. Further, as a means for preventing the locking cylinder 9 from coming off, a nut, a lock pin or the like can be used in addition to the bolt. In this embodiment, as a mechanism for locking the rotor 7 to the lock body 5, a normal disk tumbler type locking mechanism using a plurality of plate-shaped lock members 6 is adopted, but a pin tumbler type locking mechanism is used. Other locking mechanisms, such as or an axial pin tumbler type locking mechanism can also be used.

[0015]

As described above, in the lock of the present invention, since the lock body 5 can be attached to and detached from the door panel 1 by a simple operation, a plurality of objects to be locked and a plurality of locks have a one-to-one correspondence. Since the lock is handed over at random and the object to be locked is selected at random, even if the key is lost or the key is maliciously copied, it will take a considerably long time to unlock, so it will be a crime prevention. It is safe as a countermeasure.

Further, if the door panel 1 is provided with the insertion hole 2, the lock body 5 can be immediately mounted and used. Therefore, in a rocker or the like which is used by a large number of people on a time shift system, it is not one person but one person. The shift system allows multiple people to use a single lock jointly, reducing the equipment cost of the lock.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a removable lock according to an embodiment of the present invention.

FIG. 2 is a rear view of the lock.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a vertical cross-sectional view of the mounted state of the lock.

FIG. 5 is a horizontal cross-sectional view of the mounted state of the lock.

FIG. 6 is a vertical sectional view of the lock in a detached state.

FIG. 7 is a horizontal cross-sectional view of the unlocked state of the lock.

[Explanation of symbols]

 1 Door Panel 2 Insertion Hole 3 Head of Lock Main Body 4 Collar of Lock Main Body 5 Lock Main Body 6 Lock Member 7 Rotor 8 Body of Lock Main Body 9 Locking Tubular Body 10 Fixing Frame 11 Receiving Hole of Receiving Plate 12 Receiving Gold plate 13 Rotor key hole 14 Key 15 Rear end part of rotor 16 Recessed part on inner bottom of locking cylinder 17 Screw hole at rear end part of rotor 18 Fixing bolt

Claims (1)

[Claims] 1. A lock body 5 in which a head portion 3 is non-rotatably fitted into an insertion hole 2 of a door panel 1, and an outer collar portion 4 connected to the head portion 3 abuts on a front surface 1a of the door panel 1. A rotor 7 rotatably housed in the lock body 5 and locked to the lock body 5 by the lock member 6; fitted to the body portion 8 of the lock body 5 so as to rotate integrally with the rear end portion of the rotor 7. A fixed locking cylinder 9; a receiving plate 12 fixed to the fixed frame 10 and provided with a receiving hole 11 through which the locking cylinder 9 comes in and out;
Of the key 14 inserted into the key hole 13 of the lock member 6 to move the lock member 6 to the unlocking position, and the insertion hole 2 and the receiving hole 11 intersect each other at a constant angle. The head 3 and the lock cylinder 9 are formed in the same non-circular shape, and the outer shape of the cross section of the lock cylinder 9 is similarly formed.
1, the locking cylinders 10 projecting from the receiving holes 11 are rotated by the key 14 at the fixed angle, and the front end surface 9a of the locking cylinder 9 is received by the metal plate 12 by the dimensional difference. A detachable lock adapted to engage with the rear surface 12a.