JP2001032601A - Door closing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door closing apparatus for closing a door of a box body, coping with either case of right side opening or left side opening of the door. SOLUTION: This door closing apparatus 1 is formed of a case 70 having a storage part S formed communicating from the front face side to the back face side, and fitted in the state of piercing a door 2; an operating body 10 having a cylindrical front face side end part and disposed in the storage part S of the case 70 rotatably with the communicating direction of the storage part S as a center axis; and a movable locking plate 61 for closing and opening the door 2 by projecting and retreating interlocked with the rotating operation of the operating body 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door closing device capable of closing and opening a door of a box by rotating an operating body.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 15, an operation body 103 projecting from the surface of a door 110 is rotated on a door 110 of a box body such as a distribution board, so that a lock plate 104 is provided.
The door closing tool 101 is used for closing and opening the door 110 in a box body by causing the door 110 to protrude and retract from the door 110. In this conventional door closing tool 101, the operating body 1 supported by the door 110 is
The lock plate 104 is fixed to the base of the operating body 103.
It rotates around the fixed part with the 03. Therefore, the lock plate 10
The leading end of the door 4 slides in and out of the end face of the door 110 by sliding along an arc-shaped trajectory centered on the fixed portion. The operating body 103 of the conventional door closing tool 101 includes a shaft portion 103a and a handle portion 103b as shown in the figure.

[0003]

However, in the above-mentioned prior art, the operating body 103 is provided with the shaft 103a.
And a handle portion 103b connected thereto and extending to one side
When the opening direction of the door 110 is changed, if the door closing tool 101 shown in the figure is attached as it is, the handle 103b of the operation unit 103 is turned in the opposite direction, and the usability is poor. Can not do it.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a door closing device for closing a door of a box, which is applicable to both cases where the door is opened rightward or leftward. It is an object of the present invention to provide a door closure which can be operated.

[0005]

In order to achieve the above object, in the door closing device of the present invention, a storage portion communicating from the front side to the rear side is formed, and is attached while penetrating the door. A case, a cylindrical operating body disposed in the housing of the case and rotatable around the communicating direction of the housing as a center axis, and a cylindrical operating body, and protruding in conjunction with the rotating operation of the operating body. And a movable lock plate that retracts to close and open the door to form a door closing tool.

According to this door closing device, the front end of the operating body is formed in a cylindrical shape, so that the case and the operating body can be turned upside down when mounted on either the right or left side of the door. Can be.

The front surface of the operating body is provided with a locking hole for a key for preventing a turning operation of the operating body when the lock plate is in the protruding position, and a rotatable locking portion is formed. May be.

According to this door closing device, the operating body can be fixed by locking by turning the key.

The operating body includes an operating body disposed in the storage section for driving a locking plate, the locking section having a locking hole provided on the front side of the operating body, and A front cover that has an insertion hole through which a key is inserted corresponding to the locking hole of the locking portion, and that holds the locking portion rotatably between the operating body and the insertion hole; A large-diameter portion that allows the tip of the key to be inserted into the insertion hole in the locked position and the unlocked position, and the key tip is inserted in the insertion hole when the locked portion is in a position other than the locked position and the unlocked position. It is also preferable that it is formed in a shape having a small diameter portion that is impossible.

According to this door closing device, when the key is inserted into the locking hole and the locking or unlocking operation is performed, when the locking portion is at a position other than the locking position and the unlocking position, the key is removed from the locking hole. Can not. Therefore, when operating the key, the locked position and the unlocked position can be clearly distinguished.

An identification hole is formed in the front cover, and an identification display is provided on the locking portion to identify when the locking portion faces the identification hole when the locking portion is in the locking position and when the locking portion is in the unlocking position. It is also preferred that

According to this door closing device, the locked position and the unlocked position of the key can be easily determined.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described.
This will be described with reference to FIGS. The door closing tool 1 of the present embodiment forms a storage portion S that communicates from the front side to the rear side, and is attached to the door 7 in a state where the door S penetrates the door 2.
0 and the storage section S disposed in the storage section S of the case 70.
The front end, which is rotatable about the communication direction of the central axis, is a cylindrical operating body 10, and projects in conjunction with the rotating operation of the operating body 10, and moves back and forth to close and open the door 2. And a locking plate 61.

The door closing member 1 is attached to a door 2 of a distribution board as shown in FIG. 5, for example. As shown in FIG. 5B, the surface of the door 2 is formed so as to describe a curved surface, and the door closing member 1 is attached near the end of the door 2. The door 2 is formed by bending a metal plate. As shown in FIG. 3, the side plate 5 of the door 2 is formed by bending the metal plate so as to extend to the side surface of the door 2. Door 2
Is mounted so as to cover the peripheral edge of the opening of the box 6. The locking plate insertion hole 3 and the closing hole 4 through which the locking plate 61 penetrates are respectively provided in the opening peripheral portions of the side plate 5 and the box 6 of the door 2, and the locking plate 61 of the door closing tool 1 is provided. When the lock plate 61 is in the protruding position, the lock plate 61 penetrates the side plate 5 of the door 2 and closes the door 2 by penetrating the closing hole 4 formed in the box 6. As shown in FIGS. 2 and 4, the lock plate 61 slides in a straight line direction.
The lock plate insertion hole 3 and the closing hole 4 have substantially the same shape as the longitudinal section so that the lock plate 61 can penetrate from the lateral direction.

The door closing tool 1 includes an operating body 10 and an operating body 10.
Is stored in the storage section S. The operating body 10 is rotated to operate the lock plate 6.
1 is protruded and retracted, and the operation position in which the front end portion protrudes and substantially the entire operation body 10 are
By pressing the front end of the operation body 10 between the storage position and the storage position stored in the operation body 10, the storage position can be freely switched. The operation body 10 includes an operation body 30, a front cover 11 attached to a front end of the operation body 30, and a locking portion 21 provided inside the front cover 11. These will be described in order.

As shown in FIG. 6, the operating body main body 30 has a pair of ear pieces 35 formed on the outer periphery and a double circular wall 32 formed on the upper surface. A plurality of extending engagement teeth 42 are formed, and are formed of a cylindrical operating body main body front end portion 41.

The operating body main body base 31 has a disk shape with a concave lower surface, and has a lug 35 projecting outward in a substantially rectangular shape at a position symmetrical with respect to the center of the lower surface. I have. The ear piece 35 is formed so as to protrude outward from the storage portion S of the case 70.

The outer diameter of the disc-shaped operating body main body base 31 is substantially equal to the inner diameter of the inner peripheral wall 76 of the storage section S, and when the operating body 10 is pressed, the operating section 10 is guided by the inner peripheral wall 76 to store the storing section S. Slide inside S. As shown in FIG. 6, a double circular wall 32 is provided upright on the upper surface of the operating body main body base 31, and the outer circular wall 32a and the inner circular wall 32b are located at corresponding positions. , A notch 33 is formed. A low height portion 36 is formed on the inner circular wall 32b on the side opposite to the cutout portion 33 over substantially 180 degrees.

The front cover 11 is fitted outside the outer circular wall 32a. As shown in FIG. 8A, elastic engagement pieces 34 are formed at two places on the outer circular wall 32 a, and the elastic engagement pieces 34 are squares formed on the side surface of the front cover 11. With the engaging hole 17 of the first. This allows
The front cover 11 can be easily attached to the operation body 35, and the front cover 11 can be securely fixed.

As shown in FIG. 8, the distal end portion 41 of the operating body main body has a cylindrical shape.
A step portion 44 is formed to abut one end of a coil spring 46 for urging the coil spring 0 toward the front surface of the door 2. In the vicinity of the step 44, a columnar engaging projection 43 as shown in FIG.
Are formed as a pair. Further, at the bottom inside the distal end portion 41 of the cylindrical operating body main body, there are provided four driving teeth 45 of a substantially right-angled triangular shape in a front view for rotating the spindle 51 by being pressed against the end of the spindle 51 inserted therein. Have been. Further, the engagement projection 43 engages with the engagement projection 53 formed on the surface of the spindle 51 to hold the operating body 10 in the storage section S. A plurality of engaging teeth 4 extending in the longitudinal direction are provided on one side of the surface of the operating body main body tip portion 41.
2 are formed.

The locking portion 21 has a disk-shaped front plate 22, a cam 25 formed on the back surface thereof, and a locking hole 24 formed on the surface of the front plate 22 for inserting a tip of a key.
The front plate is rotatably inserted inside the outer circular wall 32a, and at the same time, the cam 25 is inserted into the inner circular wall 32b as shown in FIG. The notch 33 of the circular wall 32 has a locking rod 29 which comes into and out of contact with the cam 25.
Is arranged. A locking rod 29 is provided on the rear side as shown in FIG. 9, and a spring 27 is provided between the forked ends of the locking rod 29. This spring 27
It is provided so as to push the front cover 11 and the base of the locking rod 29 apart, and urges the locking rod 29 in the immersion direction.

The cam 25 has a shape as shown in FIG. 9, and when the locking portion 21 is in the locking position, the cam 25 is in the state shown in FIG.
As shown in FIG. 5, the abutting projection 28 at the rear end of the locking rod 29 abuts on the side where the cam 25 bulges, the locking rod 29 projects, and the locking portion 21 is in the unlocked position. As shown in FIG. 9B, the contact projection 28 at the rear end of the locking rod 29 contacts the side where the cam 25 is depressed, and the locking rod 29 is retracted. At this time,
Since the locking rod 29 is urged in the retracting direction by the spring 27, the locking rod 29 can be reliably immersed by the urging force, and the tip of the contact projection 28 has a U-shape. Since it is formed, the locking rod 29 can be smoothly moved in and out.

An identification mark 23 is formed on the front plate 22 of the locking portion 21 so as to face the identification hole 12 of the front cover 11. In the present embodiment, this is configured by coloring the positions shown by oblique lines in FIG. When the lock portion 21 is rotated to the unlock position, the identification mark 23 is viewed from the identification hole 12 of the front cover 11 and the color is set to a color that calls attention such as red to unlock. The position can be clearly identified. The lock hole 24 is formed in an elongated shape corresponding to the tip shape of the key.

The front cover 11 at the front end of the operation body 10
Is formed in a cylindrical cap shape as shown in FIG. 6, and a front surface thereof is formed with an insertion hole 14 corresponding to the locking hole 24 of the locking portion 21 and through which a key is inserted. Is in the lock position and the unlock position, and the tip of the key is
4 and a small-diameter portion 15 in which the tip of the key cannot be inserted into the insertion hole 14 when the locking portion 21 is at a position other than the locking position and the unlocking position. Is formed. The shape of the insertion hole 14 is as shown in FIG. 10, and when the locking portion 21 is in the locking position or the unlocking position rotated by 180 degrees, the entire locking hole 24 is located in the large-diameter portion 16 and While the locking portion 21 is rotating from the locking position to the unlocking position, one end of an elongated locking hole 24 is covered with the small diameter portion 15 as shown by a broken line in FIG. At this time, a notch is formed at a position corresponding to the small-diameter portion 15 on one side of the key, so that when the key is turning from the locking position to the unlocking position, the notch and the small-diameter portion 15 are engaged. At the same time, it becomes impossible to remove the key, and when the key is operated, the locking position and the unlocking position become clear, and the locking and unlocking can be performed reliably.

FIG. 11 shows an example of the key 18. Where 1
9 is a notch, and the tip side from the notch 19 is enlarged as shown in FIG.
8 cannot be inserted or removed.

The rear surface of the front plate 22 of the locking section 21 has
Is formed, and the stopper 26 moves above the low height portion 36 formed on the inner circular wall 32b. When the locking portion 21 is in the locking position or the unlocking position, the stopper 26 comes into contact with the end surface of the inner circular wall 32b formed at the standard height, and exceeds the locking position or the unlocking position. Is prevented from rotating.

As shown in FIG. 6, a substantially anti-slip portion 13 having a substantially saw-toothed shape is formed on the front end side surface of the front cover 11, as shown in FIG. This makes it difficult for the operation body 10 to slip when the operation body 10 is rotated, so that the rotation operation of the operation body 10 is facilitated, and the closing and opening of the door 2 can be easily performed.

The front cover 11 has an identification hole 12 formed of a circular through-hole, and the identification mark 23 can be confirmed through the identification hole 12. The shape of the identification hole 12 and the identification mark 23 are not limited to this, for example,
Characters such as "locked" and "unlocked" may be described as the identification mark 23, and the square identification hole 12 may be formed so that the identification mark 23 can be confirmed.

As described above, the spindle 51 and the coil spring 46 shown in FIG.
Is interpolated. The coil spring 46 is provided at the distal end portion 4 of the operating body main body.
When the operating body 10 is in the operating state, the coil spring 46 has one end in contact with the step portion 44 inside the operating body main body front end 41 and the other end in the case. 7
The operating body 10 is urged in the protruding direction by contacting the bottom 83 of the “0”. When the operating body 10 is in the housed state, the coil spring 46 is held in a compressed state by the step portion 44 of the operating body 10.

The spindle 51 is attached to the bottom 83 of the case 70.
A spire-shaped tip is fitted into and fixed to a circular fitting hole 89 formed at the bottom. The outer diameter between the engaged protrusions 53 on the surface of the spindle 51 and the inner diameter on the bottom side of the step portion 44 of the distal end portion 41 of the cylindrical operating body main body substantially coincide with each other. The operation body 10 is held by the spindle 51 and does not rattle. At this time, the spindle 51 functions as a rattling prevention unit for preventing rattling of the operation body 10.

At the end of the spindle 51, there is formed a drive slope 52 to which the drive teeth 45 inside the operation body 10 are pressed. When the operating body 10 is pressed in the rear direction, the driving teeth 45
Is pressed against the drive slope 52, the tip of the drive tooth 45 slides on the drive slope 52, and the spindle 51 rotates.

The lock plate 61 has a rectangular external shape in a plan view, and is inserted into a lock plate insertion opening 88 provided in the case 70. An operating body insertion hole 63 is formed at the center of the lock plate 61, and the operating body main body distal end portion 41 penetrates. As shown in FIG. 6, the operating body insertion hole 63 is formed in a long hole shape.
An engagement receiving tooth 62 that engages with the zero engagement tooth 42 is formed. The width of the operation body insertion hole 63 in the short direction substantially matches the outer diameter of the operation body main body front end portion 41, and the operation body main body front end portion 4
No engagement tooth 42 and engagement receiving tooth 62 are separated from each other,
These engagements are reliable.

By rotating the operating body 10, the engagement receiving teeth 62 engaged with the engagement teeth 42 are driven, and the lock plate 61 is rotated.
Slides linearly between the projecting position and the retracted position,
The number of the engagement teeth 42 and the engagement reception teeth 62 is the same, and the engagement teeth 42 and the engagement reception teeth 6 located at the respective end portions are provided.
By assembling such that the lock plate 61 engages with the lock member 61, the position of the operating body 10 when the lock plate 61 is at the protruding position or the retracted position can be kept constant. One end of the lock plate 61 penetrates the closing hole 4 of the box body 6 at the projecting position, and a taper 64 is formed at the end so that the lock plate 61 can penetrate smoothly at that time.

The case 70 includes a case body 71 and a lid 91.
It consists of. Here, the case body 71 forms the back side of the storage section S communicating from the front side to the rear side, and the hook section 8 surrounds the storage section S.
4 is disposed on the rear surface of the door 2 with the front side of the storage unit S and the hook 84 positioned in the through holes 7 formed in the door 2. On the other hand, the lid body 91 forms the front side of the storage section S, and the edge body 92 engaging around the through hole 7 of the door 2 and the case body 71 from the front side of the door 2.
Has a hooked portion 94 hooked on the hooking portion 84, and is attached to the case main body 71 in a state where the operating body 10 is prevented from falling off.

The case body 71 is, as shown in FIG.
A bottom end portion 87 of a cylindrical case body having a bottom and a lock plate insertion opening forming portion 82 which is located above the lower end portion 87 of the case body and forms a periphery of a lock plate insertion opening 88 through which the lock plate 61 penetrates.
And an annular inner peripheral wall 76 located above the lock plate insertion opening forming portion 82, and an annular mounting wall 80 located outside thereof to form a hook portion 84. The inner peripheral wall 76 and the lower end portion 87 of the case main body form the back side of the storage section S in which the operation body 10 is stored.

At the lower end 87 of the cylindrical case body having a bottom,
A pedestal 85 is formed at the bottom, and a fitting hole 89 is formed at the center. The spire-shaped tip of the spindle 51 is fitted into the fitting hole 89 of the pedestal 85.
Hold 1

A reinforcing rib 86 as shown in FIG. 12B is formed between the lower end portion 87 of the case body and the lock plate insertion opening forming portion 82. The lock plate insertion opening forming portion 82 is substantially rectangular in plan view as shown in FIG. 12A, and a lock plate insertion hole 88 having a cross-sectional shape shown in FIG. Is formed. The lock plate 61 is disposed so as to penetrate the lock plate insertion opening 88, is held by the lock plate insertion opening forming portion 82, and is slidable in a linear direction.

The inner peripheral wall 76 is formed in an annular shape with a part cut out, and a tip end of the inner peripheral wall 76 is provided with a lock plate 61.
Are in the protruding position and the retracted position, respectively.
Abuts against the rotation of the operating body 10 by contact
Are formed. Further, one of the rotation preventing portions 73a with which the ear pieces 35 abut in a state where the lock plate 61 is in the protruding position,
One side 79a of a guide groove for guiding the ear piece 35 when the operating body 10 is projected and retracted is continuously provided, and the other rotation that the ear piece 35 abuts while the lock plate 61 is in the retracted position. A rotation guide wall 77 is formed from the blocking portion 73b to the other side 79b of the guide groove to guide the lug 35 and hold the operating body 10 at the protruding position.

The rotation preventing portion 73 has a pair of fixing holes 74 into which the locking rod 29 of the locking portion 21 is inserted. The upper end of the fixing hole 74 is open, but is closed by attaching the lid 91. In the locked position where the locking rod 29 protrudes and is inserted into the fixing hole 74, the locking rod 29 and the fixing hole 74 are engaged to prevent rotation and protrusion of the operating body 10 at the storage position. Can be.

The mounting wall 80 is formed in an annular shape so as to surround the outside of the inner peripheral wall 76 as described above. Mounting wall 80
Is formed with a hook portion 84 formed of a square hole.
The hooked portion 84 is engaged with a hooked portion 94 of the lid 91 described later. In addition, concave portions 81 are formed at four places in the mounting wall 80, and convex portions 93 provided at corresponding positions on the back surface side of the lid 91 are fitted.

The lid 91 is, as shown in FIG.
, A lid body 95 that forms the front side of the door, an edge portion 92 that penetrates through the through hole 7 of the door 2, and a hook portion 8 of the case body 71.
4 is configured by a hooked portion 94 that engages with the hook 4.

The outside of the front surface of the lid body 95 is gradually inclined toward the surface of the door 2. Thereby, the operating tool 10
When the operator rotates the operation body, the finger hardly touches the lid 91, and the operation of rotating the operation body 10 becomes easy. Lid body 95
, A through hole having a step 96 is formed, and forms the front surface side of the storage section S. The end of the inner peripheral wall 76 of the case main body 71 abuts on this step 96.

An annular edge portion 92 is formed on the back surface of the lid 91, and a portion thereof is cut out, and a hooked portion 94 having a wedge-shaped tip is formed there. The edge 92 is externally fitted to the outside of the inner peripheral wall 76 in the assembled state.
The tip of the edge 92 holds the lug 35 between the tip of the rotation guide wall 77 and the tip. At this time, the edge 92
A gap is formed between the rotation guide wall 77 and the ear piece 35 so that the ear piece 35 can slide freely. When the operating body 10 is rotated, the ear piece 35 slides in the gap. . Thus, the operation body 10 can be smoothly rotated.

In the lid 91, the hooked portion 94 is engaged with the hooking portion 84 of the case main body 71 and is integrated with the case main body 71. A U-shaped cut 8 is also formed in the through hole of the door 2 at a position corresponding to the hooked portion 94. Further, on the rear surface of the lid 91, convex portions 93 that fit into the concave portions 81 of the case main body 71 are formed at four places. Convex part 9
3 is fitted into the concave portion 81 and inserted into the recess 9 formed around the through hole of the door 2. This allows
The lid 91 and the case main body 71 can be prevented from rotating with respect to the door 2, and the mounting direction of the door closing tool 1 can be fixed.

The procedure for assembling the door closure 1 will be described. First, the lock plate 61 is inserted into the lock plate insertion opening 88 of the case body 71 from the lateral direction. Next, spindle 5
1 and the coil spring 46 are disposed inside the case body 71. Subsequently, the locking portion 21, the spring 27, the locking rod 2
The operation body 10 having the front cover 9 disposed inside the front cover 11 is disposed inside the case body 71. At this time, the spindle 51
Is inserted into the cylindrical operating body main body distal end portion 41 of the operating body 10, and the distal end of the operating body 10 is thereby pivotally supported to prevent rattling. When inserting the operating body 10, the engaging teeth 42 formed on the operating body 10 and the engaging receiving teeth 62 of the lock plate 61 are engaged. Then, the case body 71 and the operating body 10 are brought into contact with the door 2 from the back side. Subsequently, the lid 91 is mounted from the front side of the door 2 and the mounting of the door closing tool 1 is completed. When attaching the lid 91,
The hooked portion 94 of the lid 91 is connected to the hook 8 of the case body 71.
Since the work is completed only by engaging with 4, the mounting work is easy.

Next, the movement of the operating body 10 will be described with reference to FIG. When the operating body 10 is in the stored state located in the storage section S, the ear piece 35 is positioned in the guide groove 79 and below in this figure. At this time, the lock plate 61 engaged with the operation body 10 is located at the projecting position, and the door 2 is closed. When the operating body 10 is pressed, the spindle 51 rotates, and the spindle 51 rotates.
When the operating body 10 is released, the operating body 10 is pushed out by the compressed coil spring 46. At this time, the lug 35 moves once downward in the guide groove 79, and then moves to the front side. Slide to. FIG. 1 shows the state at that time. At this time, one side of the ear piece 35
The operating body 10 is in contact with one of the rotation preventing portions 73a, and can rotate only clockwise. When the operation body 10 is rotated clockwise, the ear piece 35 slides along the upper end surface of the rotation guide wall 77 and comes into contact with the other rotation prevention portion 73b. At this time, the lock plate 61 engaged with the engagement teeth 42 of the operating body 10 is driven to the retracted position (FIG. 2).
(B)), the door 2 is opened. In the operation, the ear piece 35 projects outward from the inner wall of the storage section S and abuts against the rotation guide wall 77, so that the operation body 10 does not unexpectedly move in the immersion direction. Is easy.

The operating tool 10 according to the present embodiment is
Each time the front end of the front side is pushed in, the front surface is held in the operation position where the front surface protrudes from the storage portion or the storage position where the front surface is stored in the storage portion. The engagement projection 43 is engaged with and disengaged from the engagement projection 53 on the surface of the spindle 51. The movement will be described with reference to FIG.

FIGS. 14A to 14C show the positional relationship between the end face 43a of the engaging projection and the engaged projection 53 of the spindle 51 when the operating body 10 moves from the stored state to the operating state. Is shown. FIG. 14A shows the position of the end face 43 a of the engaging projection when the operating body 10 is at the storage position, and the engaging projection 43 engages with the locking step 54 of the engaged projection 53. (Position A (indicated in each figure, the same applies hereinafter)), the operation body 10 is restricted from moving in the protruding direction. At this time, the coil spring 46 is in a state of being compressed by the step portion 44 of the operating body 10. As shown in FIG. 14B, when the operating body 10 in the storage position is further pressed, the end surface 43a of the engagement projection slides further downward (position B), and the driving teeth 45
Is pressed against the drive slope 52 to rotate the spindle 51, and the end face 43a of the engagement protrusion relatively moves rightward in this figure (position C). Here, when the pressing of the operating body 10 is released, as shown in FIG. 14C, the coil spring 46 pushes the operating body 10 upward by the urging force. At this time, the engaging protrusion 43 comes into contact with the inclined surface 56 of the engaged projection 53 (position D), slides on the inclined surface 56, and rotates the spindle 51 slightly while rotating the spindle 51 slightly. To the position E where the coil spring 46 is substantially opened.
At this time, the operation body 10 is located at the operation position, and the operation body 10 can be rotated. FIG. 7 shows the state.
(B).

FIGS. 14C to 14E show the positional relationship between the end face 43a of the engaging projection and the engaged projection 53 of the spindle 51 when the operating body 10 moves from the operating state to the housed state. Is shown. When the operating body 10 is pressed from the operating state where the operating body 10 protrudes in FIG. 14C, the end face 43a of the engagement protrusion slides downward as shown in FIG. 14D (position F). . When the operating body 10 is further pressed, the drive teeth 45 abut against the drive slope 52, the spindle 51 rotates, and the end surface 43a of the engagement protrusion moves rightward in the figure (position G). Here, when the pressing of the operating body 10 is released, the operating body 10 is pushed upward by the urging force of the coil spring 46, and the engaging projection 43 comes into contact with the inclined guide surface 55 of the engaged projection 53. (Position H), while sliding over the spindle 51, the spindle 51 is slightly rotated to reach Position I (Position A). In this state, the operating tool 1
0 is located at the storage position. FIG. 7A shows this state.

Since the spindle 51 and the engagement projection 43 of the operating body 10 operate in this manner, the operating body 10 protrudes from the storage section S by a simple operation of pushing the front end of the operating body 10. The operation position and the storage position located in the storage section S can be switched. The operation body 10
Need not necessarily appear and disappear, and may be fixed, for example, rotatably at the operation position.

The door closing tool 1 according to the present embodiment is
The front cover 11 forming the front end of the housing is substantially cylindrical, and the operating body 10 rotates in the same manner as the center line of the spindle 51 provided at the center of the storage section S.
Thereby, as shown in FIG. 2, the turning operation of the operating body 10 can be performed within the front surface area of the storage section S of the door closure 1. Therefore, in the rotation operation of the operation body 10, the operation can be performed in the front surface area of the storage section S and a small area around the front. As a result, other devices can be disposed relatively close to the operation body 10 of the door 2, and the door 2 can be made smaller, thereby reducing the size of the box 6 itself. Can contribute.

In the door closing device 1 of the present embodiment, the front cover 11 constituting the front end of the operating body 10 is cylindrical, so that the door closing device 1 is attached to the opposite side of the door 2. In such a case, even if the door closing member 1 is mounted upside down, the front cover 11 is cylindrical, so that the door closing member 1 can be used without any problem.
Both left-opening doors 2 can be accommodated. In addition, since the lid 91 is also formed in a circular shape when viewed from the front, it can be used without discomfort even if it is turned upside down.

Although the chain plate 61 of the present embodiment slides in a linear direction, it goes without saying that the chain plate 61 may be, for example, one with one end pivotally mounted, and protruding and retracting while rotating. .

[0054]

The present invention has been described above.
According to the invention described above, the front end of the operating body is formed in a columnar shape, so that the case and the operating body can be turned upside down when mounted on either the right or left side of the door. Thereby, it can respond to both the right-opening door and the left-opening door.

According to the second aspect of the invention, unnecessary operation of the operating body can be prevented.

According to the third aspect of the invention, the locking and unlocking of the locking portion can be reliably performed.

According to the fourth aspect of the present invention, the locked position and the unlocked position of the key can be easily determined.

[Brief description of the drawings]

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

FIGS. 2A and 2B are plan views showing the door closing device, in which FIG. 2A shows a case where the lock plate is at a protruding position, and FIG. 2B shows a case where the lock plate is at a retracted position.

FIG. 3 is a horizontal sectional view showing a state in which the door is closed by the door closing tool.

FIG. 4 is a perspective view showing a state where the door closing member is attached to a door.

FIG. 5 is a horizontal sectional view showing a state where the door is closed by the door closing tool.

FIG. 6 is a perspective view in which a part of the door closing tool is omitted.

FIGS. 7A and 7B are vertical cross-sectional views showing the door closing tool, in which FIG. 7A shows a case where the operating body is in a storage position, and FIG.

8 (a) is a longitudinal sectional view and FIG. 8 (b) is a bottom view showing the operation body of the door closing device.

FIGS. 9A and 9B show the movement of a cam provided on a locking portion of the door closing device. FIG. 9A shows a case where the locking portion is at a locking position, and FIG. 9B shows a case where the locking portion is at an unlocking position.

FIG. 10 is a plan view showing a rotating state of a locking hole of the door closing device.

FIG. 11 is a front view showing an example of a key used for locking the door closing device.

12 (a) is a plan view, FIG. 12 (b) is a longitudinal sectional view, and FIG. 12 (c) is a partially cutaway front view showing a case body of the door closing device.

FIGS. 13A and 13B are front views of the lid of the door closing device, wherein FIG. 13A is a partially cutaway front view and FIG. 13B is a bottom view.

FIG. 14 is a development view showing a positional relationship between an engaged projection of the spindle and an end surface of an engagement projection of the operating body in each process of rotating the spindle.

FIG. 15 is a perspective view showing a conventional door closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door closing tool 2 Door 10 Operating body 11 Front cover 12 Identification hole 14 Insertion hole 15 Small diameter part 16 Large diameter part 21 Locking part 23 Identification display 61 Lock plate 70 Case S Storage part

Claims (4)

[Claims] 1. A case which is formed so as to communicate from the front side to the rear side and which is attached in a state penetrating a door, and a center axis which is disposed in the case and which communicates with the case. A rotatable front end has a cylindrical operating body, and a movable locking plate that projects and retracts to close and open the door in conjunction with the rotating operation of the operating body. A door closure feature. 2. A front surface of the operation body is provided with a lockable portion which has a lock hole for a key for preventing a rotation operation of the operation body when the lock plate is in a protruding position, and is rotatable. The door closing device according to claim 1, wherein 3. The operating body, wherein the operating body is provided in a storage section and drives a locking plate, the locking section having a locking hole provided on a front side of the operating body, and A front cover that has an insertion hole through which a key is inserted corresponding to the locking hole of the locking portion, and that holds the locking portion rotatably between the operating body and the insertion hole; A large-diameter portion that allows the tip of the key to be inserted into the insertion hole in the locked position and the unlocked position, and the key tip is inserted in the insertion hole when the locked portion is in a position other than the locked position and the unlocked position. 3. The door closing device according to claim 1, wherein the door closing device is formed in a shape having a small diameter portion that is impossible. 4. An identification hole is formed in said front cover, and said lock portion is provided with an identification display for identifying when said lock portion is at a lock position and when said lock portion is at an unlock position facing said identification hole. 4. The door closing device according to claim 3, wherein the door is closed.