JP2002295099A - Locking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lock a plurality of drawers having no locking mechanisms by making it possible to provide a mechanism for easily individually locking them. SOLUTION: This locking device 1 for preventing opening of the drawer which can be opened and closed in the forward direction of a desk body includes: an engagement element 7 fixed to the desk body at a position near the edge of the drawer where it does not interfere with the opening and closing movements of the drawer; a locking means 9 having an engagement part 29c to be fitted into the engagement element 7 and located on the front surface of the drawer for regulating the opening movement of the drawer by means of a back plate; a latch 27 provided at the engagement part 29c of the locking means 9 for engaging the engagement element 7 when the engagement part 29c is fitted into the engagement element 7 to preclude removal of the engagement part 29c from the engagement element 7; a disengaging means 25 provided at the locking means 9 for disengaging the latch 27; and a key 32 for operating the disengaging means 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking device for locking an opening / closing body such as a drawer of a housing such as a desk or a sleeve desk so that it cannot be opened.

[0002]

2. Description of the Related Art Drawers are provided in such furniture and fixtures as office desks in offices, desks and sleeve desks in homes and the like, and side desks for hospitalized patients in hospitals. Generally, a plurality of drawers are provided to store personal items of each person who owns or uses a desk or the like.

[0003]

In the above-mentioned desks and side desks, for example, a side desk for an inpatient is always replaced by a user, so that a side desk without a locking mechanism is arranged. There is also a problem of privacy, and there is also a problem of security when storing money or the like in a drawer.

[0004] Some desks and side desks as described above are provided with a simple locking mechanism. The drawer is locked so that a private item stored in the drawer cannot be taken out by another person. This locking mechanism, for example, is arranged such that the keyhole is located in front of one of the drawers, and extends between all the drawers and the housing of the desk inside. It has a structure in which the bar member is actuated to prevent the opening of all drawers to the housing, that is, a locking mechanism main body is arranged in the drawer, and a key for locking and unlocking the locking mechanism is separately provided. It is configured to lock all drawers of each drawer, in order to lock each drawer, it is necessary to arrange a locking mechanism in each drawer, for example, when using multiple drawers by multiple people ,
Such a locking mechanism is not easy to manage and is inconvenient to use.

Accordingly, the present invention has been made to solve the above-mentioned drawbacks, and it has been made possible to provide a mechanism that can easily lock a drawer that does not have a locking mechanism,
It is another object of the present invention to provide a locking device capable of locking a plurality of drawers individually.

[0006]

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. The locking device 1 according to claim 1 according to the present invention.
Is a locking device 1 for preventing the opening / closing body 5 that can be opened and closed in the front direction with respect to the housing 3 from opening.
An engaging member 7 fixed to the housing 3 at a position not interfering with the opening and closing operation of the opening member 5 and near the edge of the opening and closing member 5, and an engaging portion 29 c inserted into the engaging member 7. A locking means 9 positioned on the front surface of the opening / closing body 5 for regulating the opening operation of the opening / closing body 5 with a back plate; and an engaging portion 29c of the locking means 9 provided with the engaging portion 29c. A latch 27 that engages with the engaging member 7 when the member is inserted into the united member 7 and prevents the engaging portion 29c from being detached from the engaging member 7; Release means 25 for releasing the engagement state of the latch 27, and a key 32 for operating the release means 25
And the following.

In the locking device 1, the locking member 7 is fixed near the edge of the opening / closing member 5 in the housing 3, and the locking portion 29 c of the locking means 9 is engaged with the locking member 7 to lock the locking device 9. The back plate of the means 9 is arranged on the front surface of the opening / closing body 5, and the opening / closing body 5 is in a locked state where it cannot be opened. That is, it is possible to lock one opening / closing body 5 provided in the housing 3, which is effective when a plurality of opening / closing bodies 5, for example, drawers 5 are to be locked for each drawer 5. That is, this is effective when a plurality of drawers 5 are used individually by a plurality of persons.

The locking device 1 according to the second aspect is provided on the back surface of the locking means 9 and is rotated about a rotation shaft 41 parallel to the back surface to project vertically from the back surface. A stopper 31 is provided on the front surface of the opening / closing body 5 to regulate the opening operation of the opening / closing body 5.

In this locking device 1, the stopper 31 vertically projects from the back surface of the locking means 9, that is, the stopper 31 has a substantially L-shape. Therefore, for example, in the case where the front plate of the opening / closing body 5 is the housing 3 having a structure that covers the front end surfaces of the left and right pillars 3a, that is, even when the pillar 3a is not exposed, the fastening member fixed to the side surface 3b of the housing 3 is provided. When the locking means 9 with the stopper 31 protruding from the united member 7 is engaged, the stopper 31 is arranged on the front surface of the opening / closing body 5 and the opening of the opening / closing body 5 is regulated. That is, the locking means 9
Can be used in both the vertical and horizontal directions.

According to a third aspect of the present invention, in the locking device 1, the engaging member 7 with respect to the locking means 9 is arranged such that the back plate 29 of the locking means 9 is located at a position for regulating the opening operation of the opening / closing body 5. The relative position of the housing 3 is determined by the positioning bracket 19.
It is characterized by being positioned.

In this locking device 1, the locking means 1 is arranged at a predetermined position by attaching the engaging body 7 to the housing 3 via the positioning metal 19, and the back plate 29 of the locking means 9 is provided.
Regulates the opening operation of the opening / closing body 5. The positioning bracket 19 itself has, for example, an insertion piece 19b inserted between the front plate of the opening / closing body 5 and the column 3a, and inserts this insertion piece 19b between the opening / closing body 5 and the column 3a. By inserting and attaching, the positioning of the engagement body 7 with respect to the opening / closing body 5 can be easily performed.

The locking device 1 according to a fourth aspect is characterized in that the releasing means is a cylinder lock 25.

In the locking device 1, the cylinder lock 25 is used as the releasing means, and a locking structure for engaging or releasing the latch 27 using a general-purpose member can be easily obtained.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the locking device of the present invention will be described below in detail. The locking device 1 is used for furniture and furniture such as office desks, sleeve desks, and side desks, and locks a drawer provided in these desks and the like.

FIG. 1 is an exploded perspective view showing an embodiment of the locking device according to the present invention, FIG. 2 is an exploded perspective view of the locking device of the embodiment viewed from the back, and FIG. FIG. 4 is a perspective view of the engaging body used in the locking device as viewed from the back, and FIG. 5 is a perspective view of a housing to which the locking device is attached.

The locking device 1 of this embodiment is attached to a corner of a desk body 3 such as an office desk or a sleeve desk as a housing as shown in FIG. This locks the drawer 5 as a sliding opening / closing body. As shown in FIG. 3, the locking device 1 is roughly divided into an engaging body 7 and a locking means 9.

The engaging body 7 is fixed to the desk body 3 at a position not interfering with the opening and closing operation of the drawer 5 and near the edge of the desk body 3. As shown in FIG. 4, the engaging body 7 has a flange 13 in which the surface side of the base 11 protrudes from the left and right side surfaces.
have.

On both sides of the engagement body 7, a pair of engagement recesses 15 formed by cutting off the base 11 and the flange 13 are formed. A latch 27 described later is engaged with the engagement recess 15. Two mounting holes 17 are formed in the engaging body 7 of this embodiment, which are located vertically above and below. The engaging body 7 is fixed to the column 3a of the desk body 3 via an L-shaped fitting 19 shown in FIG. 1 which is an L-shaped positioning fitting.

As shown in FIG. 1, the L bracket 19 includes a mounting piece 19a and an insertion piece 19b. The L fitting 19 is inserted into the gap between the drawer 5 and the pillar 3a by inserting the insertion piece 19b, and is fixed to the pillar 3a by inserting a screw (not shown) into a through hole 19c formed in the mounting piece 19a. At this time, the screw is inserted into the mounting hole 17 of the engagement body 7, and the engagement body 7 and the L bracket 19 are inserted.
Are fixed to the pillar 3a. In addition, by adopting a configuration in which a double-sided adhesive tape or the like is attached to the back surface of the L bracket 19,
The L fitting 19 is first adhered and fixed to the pillar 3a to determine the attachment position of the engagement body 7, and then the attachment hole 1 is inserted into the through hole 19c.
It is also possible to fix with a screw so that 7 is put together.

FIG. 6 is a perspective view of a back plate used in the locking device as viewed from the back, FIG. 7 is a perspective view of a cylinder lock used in the locking device as viewed from the back, and FIG. 8 is used in the locking device. FIG. 9 is a perspective view of the latch as viewed from the surface, and FIG. 9A shows the latch engagement state of the locking device, and FIG.
FIG. 10 is a rear view of the locking device, and FIG.
FIG. 4 is a plan view showing a state where the locking device is used in a vertical direction.

The locking means 9 includes a front cover 21, an intermediate member 23, a cylinder lock 25, a latch 27, and a back plate 29.
And a stopper 31.

The front cover 21 shown in FIG. 1 has a cylindrical portion 21a at the lower part of the surface to expose the cylinder lock 25. Above the cylinder portion 21a, an upward insertion mark 21b
Is provided. An insertion opening 21c is formed in the upper end surface of the front cover 21, and the above-described engaging body 7 is inserted into the insertion opening 21c. That is, the insertion mark 21b indicates the insertion direction of the locking means 9.

The intermediate member 23 is attached to the inside of the front cover 21 and has a cylindrical body 23a inserted into the cylindrical portion 21a;
It has a notch 23b that matches the above-mentioned insertion opening 21c. Further, as shown in FIG. 2, a support shaft 23c for supporting a latch 27 described later is provided. Cylindrical body 23a
A non-rotatable cylinder lock 25 described later is inserted into the inside. That is, the cylinder lock 25 is inserted into the cylinder 23a, and the cylinder 23a is further inserted into the cylinder 21a to be exposed from the cylinder 21a of the front cover 21.

The intermediate member 23 has a fixing hole 23d
And a screw (not shown) is inserted into the fixing hole 23d from the back surface, and is fixed to the back surface of the front cover 21.
On the left and right sides of the back surface of the intermediate member 23,
Three caulking projections 23e are protruded. The caulking projection 23e is used for fixing the back plate 29.

As shown in FIG. 6, the back plate 29 is
On the left and right of 9a, there is a vertically long flange 29b. This flange portion 29b is parallel to the substrate portion 29a,
It protrudes from the substrate part 29a to the back side. An engaging portion 29c formed by a gap is formed between the left and right flange portions 29b and the left and right sides of the substrate portion 29a, and the flange 13 of the above-described engaging body 7 is inserted into the engaging portion 29c.

The backing plate 29 is provided with the
, Is disposed in front of the drawer 5 and the flange 29
When the back surface of b comes into contact with the drawer 5, the opening of the drawer 5 is regulated. In the back plate 29, the mounting holes 29d of the flange 29b are swaged to the swaging projections 23e.

The latch 27 is provided on the support shaft 23 of the intermediate member 23.
It is swingably supported by c. As shown in FIG. 8, a pawl 27a is formed at the swinging tip of the latch 27, and the pawl 27a engages with the engaging recess 15 of the engaging body 7 engaged with the engaging portion 29c. Thereby, the sliding of the locking means 9 and the engagement body 7 in the insertion direction is restricted. That is, the engaging portion 29c cannot be removed from the engaging body 7. The end opposite to the claw 27a serves as an operating portion 27b that swings the claw 27a. The latch 27 is provided with a hole 27c in the middle of the support shaft 2.
3c, it is swingable.

The cylinder lock 25 serving as the release means is inserted into the intermediate member 23. As shown in FIG. 7, a lock claw 25a and a release claw 2
5b are provided integrally. The lock claw 25a and the release claw 25b are connected to the key insertion port 25c of the cylinder lock 25.
Is rotated by a specific key 32 inserted into the.

As shown in FIG. 9A, the claw 27a of the latch 27 is normally pressed by the urging spring incorporated in the cylinder lock 25 so that the operating portion 27b is pressed by the lock claw 25a. It is in a state of protruding from the engaging portion 29c by the urging force of the urging spring (not shown) to be mounted. As a result, the engagement body 7 inserted into the engagement portion 29c is locked by the claw 27a when the engagement recess 15 matches the claw 27a. Further, when a specific key is inserted into the cylinder lock 25 and the key is operated in the unlocking direction, as shown in FIG. 9B, the release claw 25b presses the operating portion 27b, and the claw 27a is pressed. It is designed to be moved from the engagement recess 15 in the direction of releasing the engagement.

Further, the locking means 9 according to this embodiment
Has a stopper 31 on the back side of the back plate 29. As shown in FIG. 13, the stopper 31 is rotated about a rotation axis 41 parallel to the back surface of the back plate 29 and vertically protrudes from the back plate 29, that is, approximately L is formed between the back plate 29 and the stopper 31.
It has a character-like shape. When the locking means 9 is used in a lateral direction, which will be described later, the stopper 31 is located on the front surface of the drawer 5 in a protruding state and functions to regulate the opening operation of the drawer 5.

Next, the operation of the locking device 1 will be described. In the description of this operation, first, when the locking device 1 is used in the vertical direction (when the insertion direction is the vertical direction along the boundary between the column 3a and the drawer 5 shown in FIG. 3). Will be described as an example. As shown in FIG. 3, a pillar 3a which is a corner portion of the desk body 3 which is near the edge of the drawer 5 in advance.
Is fixed to the engaging member 7. This fixation is made with the drawer 5 and the pillar 3a.
The insertion piece 19b of the L bracket 19 is inserted between the two, and the screw 49 inserted through the engagement body 7 and the mounting piece 19a is fixed to the front surface of the pillar 3a. The fixed engaging body 7 is L
It is positioned at a predetermined position by the metal fitting 19 and
It does not interfere with the opening and closing of the vehicle.

To perform locking, the drawer 5 is closed, the locking means 9 is arranged below the engaging body 7, and the locking means 9 is moved upward, so that the engaging body 7 is inserted into the insertion opening 21 c of the front cover 21. And insert it. The flange 13 of the engagement body 7 inserted into the insertion opening 21c enters the engagement portion 29c. The flange 13 enters while retracting the claw 27a of the latch 27 protruding from the engaging portion 29c from the engaging portion 29c, and when the claw 27a coincides with the engaging concave portion 15, the latch 27 and the engaging body 7 are engaged. In this case, the slide cannot be performed. Thereby, as shown in FIGS. 10 and 11, the locking means 9 cannot be removed from the engagement body 7.

Then, the back plate 29 of the locking means 9 is
Of the drawer 5 extends from the front of the drawer 5 and comes into contact with the front of the drawer 5, and even if an attempt is made to open the drawer 5, the drawer 5 cannot be opened because the back plate 29 abuts.
That is, it is locked (see FIG. 11).

Next, the unlocking operation will be described. To release the lock, the specific key 32 is inserted into the key slot 25c of the cylinder lock 25, and the key 32 is rotated. In the present embodiment, the key 32 is in the clockwise direction in FIG. The rotation of the key 32 causes the cylinder lock 25 to rotate, and accordingly, the release claw 25b rotates.

The release claw 25b is connected to the operating portion 27 of the latch 27.
b, the latch 27 is rotated clockwise in FIG. Then, the pawl 27a is disengaged from the engagement recess 15 of the engagement body 7, and the engagement between the latch 27 and the engagement body 7 is released. As a result, the locking means 9 can be removed from the engagement body 7, and when the locking means 9 is removed from the engagement body 7, the drawer 5 can be opened.

Next, a case where the locking device 1 is used in a horizontal direction will be described. FIG. 12 is a perspective view showing a positioning fitting and an engaging body used when the locking device is used in a lateral direction,
13 is a longitudinal sectional view of the locking device in a state where a stopper is projected from the side, FIG. 14 is a perspective view showing a horizontal insertion direction of the locking device, and FIG. It is a top view which shows the state used.

When the locking device 1 is used in a horizontal direction,
An L fitting 51 shown in FIG. 12 is used. This L bracket 51
Unlike the L bracket 19 shown in FIG. 1, two mounting holes 51b are formed in the lateral direction of the mounting piece 51a. This L
As the engagement body attached to the metal fitting 51, the same one as the above-described engagement body 7 can be used. In addition, as shown in FIG. 12B, the engagement body 7 may use an engagement body 53 having a long insertion direction.

In this case, as shown in FIG. 12 (b), the engaging body 53 has the engaging recesses 15 formed on the flanges 13 on both sides, so that the engaging body 53 can be used on any of the left and right side surfaces of the desk body 3. Has become. As described above, according to the engagement body 53 having a longer overall length in the insertion direction, the engagement strength between the engagement body 53 and the locking means 9 can be increased. In this case, as shown in FIG. 12B, as the L fitting, an L fitting 55 having a length corresponding to the mounting piece 55a is used.

As shown in FIG. 14, the L fitting 19 inserts the insertion piece 19b between the front plate 5a of the drawer 5 and the column 3a. Then, the engaging member 7 is attached to the mounting piece 51 of the L bracket 51.
Together with a, it is fixed to the side surface 3b of the desk body 3.

Next, as shown in FIG. 13, the locking means 9 rotates the stopper 31 to project perpendicularly to the back plate 29. As shown in FIG. 14, the locking means 9 moves the insertion port 21 c toward the engaging body 7 and moves it in the direction of the arrow (the same direction as the movement direction of the drawer 5), so that the engaging body 7 and the locking means 9 are moved.
And are engaged. The locking means 9 inserted into the engagement body 7
In the same manner as the above operation, the claw 27a of the latch 27 engages with the engagement recess 15 of the engagement body 7, and the removal is restricted.

As a result, the stopper 31 protruding from the back plate 29 comes into contact with the front surface of the drawer 5, as shown in FIG. 15, and the opening of the drawer 5 is regulated by the stopper 31 and locked. Will be. The lock of the locking device 1 is released by inserting the key 32 into the cylinder lock 25 and rotating the key 32 to release the engagement between the latch 27 and the engaging body 7 in the same manner as described above. From the engagement body 7.

Therefore, according to the locking device 1 described above, the engaging member 7 fixed near the edge of the drawer 5 of the desk body 3
Then, by inserting and engaging the engaging portion 29c of the locking means 9, the drawer 5 can be brought into a locked state in which the drawer 5 cannot be opened. That is, one drawer 5 provided on the desk body 3
Can be locked, and this is effective, for example, when it is desired to lock a plurality of drawers 5 for each drawer. That is, this is effective when a plurality of drawers 5 are used individually by a plurality of persons.

According to the locking device 1, the engagement member 7
Is fixed to the desk body 3 using the column 3a of the desk body 3 without using a large process on the desk body side, and using the gap that is a play portion between the desk body 3 and the drawer 5,
The locking device 1 can be easily configured with respect to the desk body 3, and a locking structure can be easily added to an existing desk or the like.

Since the stopper 31 is provided so as to be able to protrude vertically from the back surface of the locking means 9, the drawer 5 is
In the case of the desk body 3 having a structure covering the a, the locking means 9 with the stopper 31 protruding is engaged with the engagement body 7 fixed to the side surface of the desk body 3, so that the stopper 31 is pulled out of the drawer 5. The drawer 5 can be disposed on the front surface, and the opening of the drawer 5 can be restricted. That is, the locking means 9 can be used in both the vertical direction and the horizontal direction.

Further, according to the locking device 1, in the above-described example, the right side shown in FIG. 5, which is one edge of the desk body 3, is shown. Since the shape is left-right symmetrical, the fixing position of the engagement body 7 can be configured to the left in FIG. 5 (the dotted circle in the figure). However, the structure can be attached even if it is not attached, that is, it is a structure without right and left.

The engaging member 7 is positioned by an L bracket 19, and the L bracket 19 is positioned by inserting the insertion piece 19b between the drawer 5 and the column 3a. Therefore, when the engaging body 7 is attached to the desk body 3 via the L bracket 19, the locking means 9 is arranged at a predetermined position, and the back plate 29 of the locking means 9 regulates the opening operation of the drawer 5. Become.

In the above-described embodiment, an example has been described in which the object to be locked is the drawer 5 provided on the desk. However, the locking device according to the present invention has a housing that can be opened and closed in the front direction. For example, the present invention is also effective as a locking device for a main body such as furniture or furniture and a door that opens and closes the main body via a hinge or the like.

[0048]

As described above, according to the locking device of the present invention, the locking member is engaged with the engaging member fixed to the vicinity of the edge of the opening / closing body in the housing, so that the locking device is locked. By disposing the back plate of the means on the front surface of the opening / closing body, the opening / closing body can be brought into a locked state that cannot be opened. That is, it is possible to lock one opening / closing body provided in the housing, and this is effective when a plurality of opening / closing bodies, for example, drawers are to be locked for each drawer. This allows each person to use each drawer individually.

Further, since a stopper is provided which can project vertically from the back surface of the locking means, for example, even in the case of a case where the front plate of the opening / closing body covers the left and right pillars of the case, the side surface of the case is also provided. By engaging the locking means with the stopper projecting with the fixed engaging body, the stopper can be arranged on the front surface of the opening / closing body, and the opening of the opening / closing body can be restricted. That is, the locking means can be used in both the vertical and horizontal directions.

Further, since it can be obtained with a simple structure of the engagement body and the locking means, the existing housing without a locking mechanism,
For example, it can be easily adopted for a desk or a sleeve desk. In particular, according to this locking device, the structure for fixing the engaging body to the housing uses a gap that is a play portion between the housing and the opening / closing body without performing a large process on the housing side, and uses the edge of the housing. Since it is configured to be fixed to the column constituting the part, the locking device can be easily configured to the housing, and the locking structure can be easily added to an existing desk or the like.

For this reason, for example, when the user constantly changes, such as a side table for an inpatient in a hospital, the drawback provided on the side desk can be used by the inpatient himself / herself to lock the drawer. By using the device, management can be performed, money can be managed during hospitalization, etc.In addition, when a desk in the office is temporarily lent to another person, the desk is drawn out to that person Can be managed. Furthermore, when it is desired to lock an opening / closing body such as a drawer provided in furniture or a desk in a home, it is possible to add an additional configuration. , Furniture and the like.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a locking device according to the present invention.

FIG. 2 is an exploded perspective view of the locking device according to the embodiment as viewed from the back.

FIG. 3 is a perspective view of the locking device as viewed from the surface.

FIG. 4 is a perspective view of the engagement body used in the locking device as viewed from the back.

FIG. 5 is a perspective view of a housing to which the locking device is attached.

FIG. 6 is a perspective view of a back plate used in the locking device as viewed from the back.

FIG. 7 is a perspective view of the cylinder lock used in the locking device as viewed from the back.

FIG. 8 is a perspective view of a latch used in the locking device as viewed from the surface.

FIG. 9 is a rear view showing the latch engagement state of the locking device in (a) and the latch engagement release state in (b).

FIG. 10 is a rear view of the locking device.

FIG. 11 is a plan view showing a state where the locking device is used in a vertical direction.

FIG. 12 is a perspective view showing a positioning fitting and an engagement body used when the locking device is used in a lateral direction.

FIG. 13 is a vertical cross-sectional view of the locking device in a state where a stopper is projected from the side.

FIG. 14 is a perspective view showing a lateral insertion direction of the locking device.

FIG. 15 is a plan view showing a state where the locking device is used in a horizontal direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Locking device 3 ... Housing (desk body) 5 ... Opening / closing body (drawer) 7 ... Engaging body 9 ... Locking means 19, 51, 55 ... Positioning fitting (L fitting) 25 ... Release means (cylinder lock) 27 ... Latch 29: Back plate 29c: Engagement part 31: Stopper 32: Key 41: Rotating shaft

Claims (4)

[Claims] 1. A locking device for preventing an opening / closing body which can be opened and closed in a forward direction with respect to a housing, wherein the opening / closing body does not interfere with the opening / closing operation of the opening / closing body and an edge of the opening / closing body. An engagement member positioned in the vicinity and fixed to the housing; and an engagement portion fitted into the engagement member, wherein the opening operation of the opening / closing member is regulated by a back plate located on the front surface of the opening / closing member. Locking means to be provided, the locking means being provided on an engaging portion of the locking means, wherein the engaging portion is engaged with the engaging member when the engaging portion is inserted into the engaging member, and the engaging portion is engaged with the engaging member. A locking device, comprising: a latch that is more immovable; a releasing unit that is provided on the locking unit and releases an engaged state of the latch; and a key that operates the releasing unit. 2. The lock means is provided on a back surface of the locking means, is rotated about a rotation axis parallel to the back surface, and vertically protrudes from the back surface. The locking device according to claim 1, further comprising a stopper that regulates an opening operation of the opening / closing body. 3. A relative position of the engaging body with respect to the locking means is positioned on the housing by a positioning metal so that a back plate of the locking means is disposed at a position for restricting an opening operation of the opening / closing body. The locking device according to claim 1, wherein: 4. The locking device according to claim 1, wherein said releasing means is a cylinder lock.