JPH084545Y2 - Door locking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a door locking device that releasably locks a door with respect to an upper structure and a lower structure.

(Prior Art) Conventionally, this type of door locking device has a hinge in which one end side in the width direction is supported by a hinge, and the other end side in the width direction can be pivotally opened and closed. There is a structure provided with a locking device that releasably locks an upper structure such as a plate and a lower structure such as a bottom plate.

The lock device used for such a door is equipped with a lock unit having a rotating body which is normally and reversely rotated within a predetermined angle range by a lock handle at an intermediate position in the vertical direction of the door, and the lock unit of the door is vertically positioned. An upper lock shaft and a lower lock shaft are attached to each other so as to be vertically movable, and are coupled so that the upper lock shaft and the lower lock shaft are vertically moved relative to each other in association with forward and reverse rotation of the rotating body.

Then, by rotating the lock handle in the locking direction, the upper lock shaft and the lower lock shaft are integrally moved in the vertical direction, and the respective tip portions thereof are provided in the upper structure and the lower structure. The doors are locked by entering the lock holes. Also,
By rotating the lock handle in the unlocking direction, the upper lock shaft and the lower lock shaft are integrally moved downward and upward, respectively, and the tips of the lock shafts are pulled out from the lock holes and retracted into the door. Then, the door is unlocked.

(Problems to be solved by the invention) However, in the conventional door locking device, a balance relationship in which the weights of the upper lock shaft and the lower lock shaft act in opposite directions on the rotating body in both the locked state and the unlocked state, etc. For example, when the door is opened, the lock device is in the unlocked state and the tip ends of the upper lock shaft and the lower lock shaft are retracted into the door. vibration,
Due to the impact of the door or the lock handle hitting something, the tip ends of the upper lock shaft and the lower lock shaft may project outward in the vertical direction of the door. When attempting to close the door in this state, the tips of the upper lock shaft and the lower lock shaft hit the front edges of the upper structure and the lower structure, so that the door is not blocked and the upper structure and the lower structure are not closed. Has a problem of damaging the front edge of the.

In addition, the tips of the upper lock shaft and the lower lock shaft have a structure in which they are locked by entering into the lock holes provided in the upper structure and the lower structure having a hole diameter larger than their diameters. The door rattles even in the state. Therefore, the door can be locked without rattling by, for example, tapering the tip portions of the upper lock shaft and the lower lock shaft with the lock holes, but the upper surface of the door and the lower surface of the upper structure and the door can be locked. If the gap with the lower structure is different, rattling will still occur even if one lock shaft is taper-fitted and the other lock shaft is not yet mated. Since the rotation of the lock handle in the locking direction stops, it is difficult to determine the rotation position of the lock handle when locked.

The present invention has been made in view of the above points,
Provided with a door locking device capable of reliably holding a locked state and an unlocked state, and capable of locking the door without rattling regardless of whether the door is installed on the upper structure or the lower structure. The purpose is to do.

(Means for Solving the Problem) A door locking device of the present invention is a door locking device that locks a door 1 to an upper structure 2 and a lower structure 3 in a disengageable manner. Lock unit 13 having a rotating body 23 fixed to an intermediate portion in the vertical direction and being normally and reversely rotated in the vertical direction within a predetermined angle range by a lock operation and a lock release operation, and a lock unit 13 positioned above and below the lock unit 13. Then, the upper lock shaft 14 and the lower lock shaft 15 are mounted on the door 1 so as to be vertically movable, and are vertically moved relative to each other in association with forward and reverse rotations of the rotating body 23.
Of the upper lock shaft 14 and the lower lock shaft 15 are slidably fitted in the tip portions of the upper lock shaft 14 and the lower lock shaft 15, respectively, and engageable with the upper structure 2 and the lower structure 3, respectively. An upper lock body 52 and a lower lock body 72, which are respectively retractable inside, and a turning point provided in the lock unit 13 for turning the turning body 23 in a turning direction during a locking operation and a turning direction in a unlocking operation are separated from each other by a neutral point. And springs for reversing and pushing the rotary body 23 to hold it in the locked state and the unlocked state, and the lock bodies 52 and 72 attached to the upper lock shaft 14 and the lower lock shaft 15, respectively, by pressing and biasing the lock bodies 52 and 72. The lock bodies 52 and 72 are projected from the tips of the upper lock shaft 14 and the lower lock shaft 15 and engaged with the upper structure 2 and the lower structure 3, respectively, in the locked state. And that spring 61,83,
Upper lock shaft 14 and lower lock shaft 15 above
Locking members 58 and 79 which are respectively provided at the tip ends of the doors and which retract the upper lock body 52 and the lower lock body 72 into the interior of the door 1 in the unlocked state.

(Operation) In the door locking device of the present invention, the upper lock shaft 14 and the lower lock shaft 15 are vertically moved relative to each other in association with the rotating body 23 that is normally and reversely rotated in the vertical direction by the lock operation and the unlock operation. The upper lock body 52 and the lower lock shaft 15 of the upper lock shaft 14 are moved.
The lower lock body 72 is engaged with and disengaged from the upper structure 2 and the lower structure 3, respectively, and the upper lock body 52 and the lower lock body 72 lock the door 1 and unlock the door 1. When the door 1 is unlocked, the locking bodies 58, 79
As a result, the upper lock body 52 and the lower lock body 72 are retracted inside the door 1, respectively.

Further, when the rotating body 23 is rotated in the rotating direction during the lock operation and in the rotating direction during the unlock operation, the spring 26 reverses and extends from the neutral point to hold the rotating body 23 in the locked state and the unlocked state. Therefore, the door 1 is held in the locked state and the unlocked state.

Further, the upper lock body 52 and the lower lock body 72 of the upper lock shaft 14 and the lower lock shaft 15 are attached to the upper structure 2 and the lower structure 3 by the springs 61, 8 respectively.
It is elastically engaged by the pressing force of 3.

(Embodiment) Hereinafter, a configuration of an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a closet, and a plurality of pairs of doors 1 are arranged between an upper structure 2 such as a top plate and a lower structure 3 such as a bottom plate with one pair of doors 1 as one set. , Upper and lower guide rails 6 and 7 provided along the front edges of the upper structure 2 and the lower structure 3 with the upper support 4 and the lower support 5 provided at the upper and lower portions of the widthwise end portions which are opposite to each other. Is rotatably supported by being fitted to. Further, the pair of doors 1 of each set are releasably locked to the upper and lower guide rails 6 and 7 of the upper structure 2 and the lower structure 3 by the locking device 8 provided at the opposite end portions in the width direction.

As shown in FIGS. 2 to 7, a recessed groove 11 is provided along the vertical direction on the end surface of the door 1 where the lock device 8 is provided. A lock unit 13 of the lock device 8 fitted in a recess 12 provided at an intermediate portion in the vertical direction of the recess groove 11 is mounted in the recess groove 11, and an upper portion of the lock unit 13 and An upper lock shaft 14 and a lower lock shaft 15 are attached to the door 1 at the lower part so as to be vertically movable.

Further, a housing recess 62 into which an upper lock body described later can enter is formed at the upper end of the door 1, and the housing recess 62 is formed to communicate with the recess groove 11. The lower end of the groove 11 is a receiving recess into which a lower lock body, which will be described later, can enter.

As shown in FIGS. 2 and 3, the lock unit 13 includes a pair of bases 21 and 22 having a substantially symmetrical structure, a rotating body 23 arranged between the bases 21 and 22, and a guide block 24.
It is composed of a and 24b, links 25a and 25b, and a spring 26.

The bases 21 and 22 are joined to each other by a caulking piece 27 and a caulking shaft 28 so as to face each other at a predetermined interval, and the upper and lower parts of the guide piece 2 are bent from the bases 21 and 22.
A guide portion 31 that fits the guide blocks 24a and 24b in a vertically slidable manner between 9a and 30a and between the guide pieces 29b and 30b.
a and 31b are provided.

Further, the guide pieces 29a, 30b facing the door outer end surfaces of the upper and lower guide portions 31a, 31b are provided with vertical elongated holes 32, respectively, and the guide pieces 30a, 29b facing the door inner side are provided with mounting holes. 33 are provided respectively, and the bases 21 and 22 can be fixed to the door 1 by screwing a mounting screw (not shown) into the door 1 through the elongated hole 32 and the mounting hole 33.
Further, the rotating body 23 is provided substantially at the center of the bases 21 and 22.
A support hole 34 for rotatably supporting is provided, and a large diameter hole portion 35 is provided in a range of about 90 ° of the support hole 34.

The rotating body 23 has cam plates 37a and 37b projectingly provided on the outer peripheral surface of a disk portion 36 that is rotatably fitted between the bases 21 and 22, and both side surfaces of the disk portion 36. Base 21,2
A shaft portion 38 that is rotatably fitted into the second support hole 34 is provided in a protruding manner, and a stopper 39 that is provided in a protruding manner on the outer peripheral surface of each shaft portion 38.
Is fitted into the large diameter hole portion 35 of the support hole 34 so that both cam plates 37a,
Up and down direction within a range of about 90 ° between the rotation position where 37b is substantially horizontal (the unlock position shown by the solid line in Fig. 2) and the rotation position where it is almost vertical (the lock position shown by the dashed line in Fig. 2). It can be rotated forward and backward. The shaft portion 38 of the rotating body 23 is
Is a mounting hole for attaching the handle 40 that is mounted on the front of the door 1.
41 are provided.

The guide blocks 24a, 24b are fitted in the guide portions 31a, 31b of the bases 21, 22 so as to be slidable in the vertical direction, and the vertical connection holes 42 opened to the outer end face are provided in the upper and lower portions thereof, respectively. A screw hole 43 is provided so as to communicate with the side portions of the upper and lower connecting holes 42, and the end portions of the upper lock shaft 14 and the lower lock shaft 15 are inserted into the connecting hole 42, respectively. .

The set screws 44 screwed into the upper and lower screw holes 43 are fitted into the groove portions 14a and 15b of the lock shafts 14 and 15, respectively, and the lock shafts 14 and 15 are pulled out through the upper and lower screw holes 43. It is fixedly connected. It should be noted that the upper and lower guide blocks 24a, 24b are provided with through holes 45 for communicating the elongated holes 32 of the guide pieces 29a, 30b with the mounting holes 33 of the guide pieces 30a, 29b.

Both ends of the upper link 25a are rotatably attached to the cam plate 37a and the guide block 24a of the rotating body 23, and the lower link 25b is the cam plate 37b of the rotating body 23. Both end portions are rotatably attached to the guide block 24b and the guide block 24b, respectively.

The spring 26 is a spiral spring, one end of which is pivotally attached to the base 21 and the other end of which is pivotally attached to the cam plate 37b of the rotating body 23.
Rotate and bias 3 in the counterclockwise direction (lock release direction),
In the two-dot chain line state of FIG. 2, the rotating body 23 is rotationally biased in the clockwise direction (locking direction), and the rotating body 23 is rotated at a substantially intermediate rotational position between the solid line state and the two-dot chain line state. The force direction is switched, that is, the turning body 23 is held in the locked state and the unlocked state by reversing and extending at the neutral point as a boundary.

On the other hand, the upper lock shaft 14 is a bearing whose lower end is connected to the guide block 24a and whose upper end is screwed into the groove 11 of the door 1 as shown in FIGS. 4 and 5. It is supported by 51 so that it can move up and down.
An upper lock body 52 housed in the housing recess 62 is vertically movably bonded to an upper end portion (tip portion) of the upper lock shaft 14. The upper lock body 52 is a sliding hole that is fitted on the outer periphery of the upper lock shaft 14 so as to be vertically slidable.
A cylindrical portion 54 having 53 and a tapered surface 55 having a diameter larger than that of the cylindrical portion 54 and having an outer peripheral surface that is reduced in diameter upward, and communicates with the sliding hole 53 and has a diameter larger than that of the sliding hole 53. The head 57 is provided with a recess 56, and the head 57 is located inside the recess 56 and is prevented from coming off by an E ring 58 as a locking body fitted to the upper end of the upper lock shaft 14.

The upper lock body 52 is the upper lock shaft.
The washer 59 is slidably fitted to the upper end of the cylinder 14 and abuts the lower surface of the cylindrical portion 54, and the washer 59 is bonded between the washer 59 and the E ring 60 fitted at a position spaced downward from the upper end of the upper lock shaft 14. The spring 61 is constantly urged upward, and is projected from the upper end portion of the upper lock shaft 14 in a state of abutting the E ring 58 on the bottom surface of the recess 56 of the head portion 57 thereof. In addition, the upper lock body 52 has a concave portion of the head 57 thereof.
The bottom of 56 is retracted by being interlocked with the lowering of the upper lock shaft 14 while being in contact with the E ring 58, and the recessed portion 62 of the door 1 is accommodated.
It is supposed to be housed inside. Reference numeral 63 in the drawing denotes a bracket for attaching packing (not shown) which is adhered to the end surface of the door 1.

Further, the lower guide shaft 15 has its upper end coupled to the guide block 24b, and as shown in FIGS. 6 and 7, the lower end is vertically moved by a bearing 71 screwed into the groove 11 of the door 1. It is movably supported. At the lower end (tip part) of the lower lock shaft 15, a lower lock body is
72 is glued so that it can move up and down. This lower lock body 72
Is composed of a roller 73 and a holder 74 to which the roller 73 is horizontally rotatable. Then, the roller 73
Has tapered portions 75 at both ends.

Further, the holder 74 has a pair of leg portions 76 that pivotally supports the roller 73 in a horizontally rotatable manner and a connecting portion 77, and is bent in a substantially U-shape. A supporting piece 78 having a substantially L-shape is bent upward from above, and the connecting portion 77 and the supporting piece 78 are fitted to the lower lock shaft 15 so as to be slidable in the vertical direction.

Further, the holder 74 has an E-ring 7 as a locking body on the lower end portion of the lower lock shaft 15 with the connecting portion 77 interposed therebetween.
Collars that are fitted to the support piece 78 and that prevent slipping out and upward movement are restricted by a predetermined width by fitting 9,80 respectively.
A spring 83 mounted between 81 and an E-ring 82 fitted at a position separated upward from the lower end of the lower lock shaft 15 constantly urges downward pressure.

The roller 73 of the lower lock body 72 is projected from the lower end portion (tip portion) of the lower lock shaft 15 in a state where the connecting portion 77 is in contact with the E ring 79. Also,
The lower lock body 72 is raised (retracted) in conjunction with the rise of the lower lock shaft 15 in a state where the connecting portion 77 is in contact with the E ring 79, and inside the lower portion of the concave groove 11 as the housing concave portion of the door 1. It is supposed to be housed in. Reference numeral 84 in the drawing denotes a bracket for attaching packing (not shown) to be attached to the end surface of the door 1.

The guide rails 6 and 7 attached to the upper structure 2 and the lower structure 3, respectively, are provided with a pair of rail pieces 6a and 7a separated from each other, as shown in FIGS. 5 and 7. There is a door 1 on this guide rail 6,7.
The upper lock body 52 and the lower lock body 72 at one end in the width direction of the door 1 are engaged with each other in a disengageable manner, and are movable along the rails 6 and 7 in the fitted state. The upper support 4 and the lower support 5 at the other end in the width direction are always fitted, and the rails 6, 7
It is possible to move along.

Then, first, when the door 1 is locked, the handle 40 on the front surface of the door 1 is rotated in the locking direction to move the rotating body 23 of the lock unit 13 from the rotating position shown by the solid line in FIG. The upper guide block 24a is moved upward and the lower guide block 24b is moved downward via the upper and lower links 25a and 25b by rotating the guide block 24a about 90 ° to the rotation position shown by the dotted line.

The upper lock body 52 is retracted and accommodated inside the door 1, that is, in the accommodation recess 62 because the upper lock shaft 14 is lowered when the lock is released. As described above, the upper lock body 52 and the guide block 24a are accommodated. When is pushed up, its head 57 enters the inside of the guide rail 6 and is taper-fitted. This taper fitting restricts the upward movement of the upper lock body 52, and thereafter, only the upper lock shaft 14 moves upward against the elasticity of the spring 61, that is, while compressing the spring 61.

On the other hand, in the lower lock body 72, when the lock is released, the lower lock shaft 15 is raised, so
Inside, that is, inside the lower portion of the groove 11, the roller 73 is pushed from the lower portion of the groove 11 to the inside of the guide rail 7 when the lower lock shaft 15 is pushed down together with the guide block 24b. And the taper portion 75 of the roller 73 is taper fitted inside the guide rail 7. By this taper fitting, the descending of the roller 73 etc. is restricted,
After that, only the lower lock shaft 15 descends against the elasticity of the spring 83, that is, while compressing the spring 83.

In this locked state, the rotating body 23 is urged to rotate in the locking direction by the spring 26, so that the door 1 and the handle
Even if vibration or impact is applied to 40, the rotating body 23 is held without rotating in the unlocking direction, that is, the lock is not released without the releasing operation, and the upper lock body is not released.
Since 52 is taper-fitted to the guide rail 6 and the fitted state is held by the pressing force of the spring 61, there is no rattling between the upper lock body 52 and the guide rail 6, and the door 1 is securely attached. Locked. Furthermore, the lower lock body
The roller 73 of 72 is taper-fitted to the guide rail 7 and the fitted state is held by the pressing force of the spring 83, so that there is no rattling between the roller 73 and the guide rail 7, and the door 1 is secured. Locked in.

On the other hand, when the door 1 is unlocked, the handle 40 on the front surface of the door 1 is rotated in the unlocking direction, and the rotating body 23 of the lock unit 13 is moved from the rotating position shown by the dashed line in FIG. By rotating about 90 ° to the rotation position shown by, the upper guide block 24a is moved downward and the lower guide block 24b is moved upward via the upper and lower links 25a, 25b.

In the upper lock body 52, the upper lock shaft 14 is moved downward together with the guide block 24a, so that
Only the upper lock shaft 14 is moved downward by the expansion of the spring 61 that was compressed during locking, and the E ring 58 at the upper end of the upper lock shaft 14 abuts the bottom surface of the recess 56 of the upper lock body 52 so that The lock body 52 is also lowered together with the lock body 52 and retracted into the accommodation recess 62 of the door 1.

Further, the lower lock body 72, by moving the lower lock shaft 15 together with the guide block 24b,
First, only the lower lock shaft 15 is moved upward by the expansion of the spring 83 that is compressed when locked, and the E ring 79 at the lower end of this lower lock shaft 15 is held by the holder.
By contacting the lower surface of the connecting portion 77 of the 74, the holder 74 and the roller 73 are moved upward together and retracted into the lower end portion of the recessed groove 11 of the door 1.

In this unlocked state, the door 1 can be rotated and opened / closed with the upper support 4 and the lower support 5 as fulcrums, and the rotating body 23 is biased by the spring 26 in the unlocking direction. Therefore, even if vibration or impact is applied to the door 1 or the handle 40, the rotating body 23 is held without rotating in the locking direction, that is, the upper lock body 52 without the locking operation.
Also, the lower lock body 72 does not project from the upper and lower portions of the door 1.

In addition, in the closet shown in this embodiment, the support members 4,5
With the fulcrum as a fulcrum, the end portion provided with the lock device 8 can be opened and closed, and the supports 4 and 5, the upper lock body 52, and the lower lock body 7 are also provided.
Since the 2 can be moved along the respective guide rails 6 and 7, it is possible to move the door body 1 in the locked closed state or the unlocked open state, so that the plurality of doors 1 can be moved to one side or both sides. The closet front surface can be largely opened by bringing it to the open state.

Further, in the above embodiment, the lower lock body 72 is provided with the roller 73 to correspond to the door 1 which can move along the guide rails 6 and 7 together with the upper lock body 52.
72 has the same structure as the upper lock body 52, and the guide rails 6,
Instead of 7, the upper structure 2 and the lower structure 3 may each be provided with a lock hole so as to have a structure corresponding to the door 1 which is opened and closed with the supports 4 and 5 as fulcrums, or the upper lock 52 Alternatively, a roller may be applied to smoothen the movement with respect to the guide rail 6.

Further, although the case where the door locking device is used for the closet has been described in the above embodiment, the present invention can be applied to doors for various uses such as a door for partitioning a room.

(Effect of the Invention) According to the present invention, the rotating body is locked and unlocked by reversing and pushing the rotating body in the rotating direction during the lock operation and the rotating direction during the lock releasing operation with the neutral point as a boundary. Since the spring for holding is provided, it is possible to reliably hold the locked state and the unlocked state of the door by the reversing and extending action of this spring, and it is possible to prevent the rotating body from rotating due to vibration or impact on the door. The situation can be prevented.

In addition, the upper lock body and the lower lock body are slidably fitted in the tip portions of the upper lock shaft and the lower lock shaft, respectively, and the respective lock bodies are pressed and urged by springs to press the upper portions of the respective upper and lower lock bodies. Since it protrudes from the tips of the lock shaft and the lower lock shaft, the lock bodies of the upper lock shaft and the lower lock shaft can be elastically engaged and held with the upper structure and the lower structure, respectively, and the upper part of the door can be retained. A large absorption range of the standing dimension for the structure and the lower structure can be obtained, and the door can be securely locked without rattling.

Further, since a locking body for retracting the upper locking body and the lower locking body into the interior of the door in the unlocked state is provided at the tips of the upper locking shaft and the lower locking shaft, the locking body is The lower lock body can be retracted to be securely housed inside the door, and it is possible to prevent the upper lock body and the lower lock body from projecting to the upper and lower parts of the door, so that the upper lock body and the lower lock body are closed when the door is closed. It is possible to prevent damage to the front edges of the upper structure and the lower structure at the tip of the body.

[Brief description of drawings]

FIG. 1 is a front view of a closet showing an embodiment of a door locking device of the present invention, FIGS. 2 and 3 are sectional views showing the lock unit, and FIGS. FIG. 6 is a sectional view showing the body, and FIGS. 6 and 7 are sectional views showing the lock body under the body. 1 ... Door, 2 ... Upper structure, 3 ... Lower structure, 13 Lock unit, 14 ... Upper lock shaft, 15 ... Lower lock shaft, 23 ... Rotating body, 26 ... Spring, 52 ... … Upper lock body, 58 …… Locking body, 61 …… Spring, 72 ……
Lower lock body, 79 …… Locking body, 83 …… Spring.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiyuki Masaki 5-6-5 Midoricho, Koganei-shi, Tokyo Murakoshi Seiko Co., Ltd. (56) References: 58-148157 (JP, U) -7298 (JP, U) Actual opening Sho 59-78466 (JP, U) Actual opening Sho 62-54161 (JP, U) Actual opening Sho 50-26711 (JP, Y1)

Claims (1)

[Scope of utility model registration request] 1. A door locking device for releasably locking a door to an upper structure and a lower structure, wherein the door is fixed to an intermediate portion in the vertical direction of the door and a predetermined angle range is obtained by a locking operation and an unlocking operation. And a lock unit having a rotating body that is vertically and backwardly rotated in the inside, and forward and reverse rotations of the rotating body that are respectively mounted above and below the lock unit so as to be vertically movable. An upper lock shaft and a lower lock shaft which are vertically moved relative to each other, and the upper structure and the lower structure which are slidably fitted in the distal ends of the upper lock shaft and the lower lock shaft, respectively. Can be engaged with each other, and
An upper lock body and a lower lock body, which are respectively retractable inside the door, and a rotating body provided in the lock unit, which has a neutral point as a boundary in a rotating direction during a lock operation and a rotating direction during an unlock operation. And springs for reversing and pushing to hold the rotating body in the locked state and the unlocked state, and the springs attached to the upper lock shaft and the lower lock shaft, respectively, to press and bias the lock bodies to move the lock bodies to the upper lock shaft and the upper lock shaft. A spring that protrudes from the tip of the lower lock shaft and engages the upper structure and the lower structure in the locked state, and the spring that is provided at the tip of the upper lock shaft and the lower lock shaft in the unlocked state. Locking body for retracting the upper lock body and the lower lock body inside the door , The locking device of the door, characterized by comprising a.