JPH08246738A - Locking device for door - Google Patents

Abstract

PURPOSE: To prevent stored objects from being thrown out when a piece of furniture is overturned at the time of an earthquake by rotatably fitting a hook body to one of hand holds of double-leafed hinged doors screwed to the storage furniture, and hooking it on the other hand hold for locking. CONSTITUTION: Hand holds 7A, 7B of the same shape are fitted to opening/ closing end sections of a pair of doors 2A, 2B, and a bolt-like hook body 8 is rotatably fitted to one hand hold 7A after a piece of furniture is installed. The tip portion 19a of the hook body 8 is formed into a circular arc slightly exceeding a quarter of a circle, and it is hooked on the shaft section 12 of the other hand hold 7B via the utilization of elastic deformation. The hook body 8 is rotated to lock the doors 2A, 2B so that the doors 2A, 2B are not opened and the stored objects are not thrown out even when the furniture is tilted or overturned by an earthquake. This locking device can be fitted without requiring a special process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door locking device which is preferably used for various furniture having a pair of doors and the like.

[0002]

2. Description of the Related Art In many cases, storage furniture, built-in cabinets, etc. are provided with so-called double doors. This kind of thing is equipped with a pair of doors having a suspension base on both left and right sides of the opening, and each of these doors is adapted to open to the front. Therefore, in the event of an earthquake or the like, the door may open without permission, and the stored items are likely to be thrown outside and scattered.

In order to solve such a problem, various devices having a lock device provided between both doors have been developed.

[0004]

However, in the conventional locking device, a latch provided on one door is engaged with a receiving metal fitting provided on the other door by a sliding operation or a rotating operation. . Therefore, it is necessary to attach a latch or a metal fitting to the door separately from the handle, which causes an increase in the number of parts and a complicated structure. Moreover, with such a configuration, there is a relatively large difference in the manufacturing process when assembling the parts to the door body between the specification with the locking device and the specification without the locking device. However, this leads to complicated facilities and complicated work procedures. In particular, in the case of steel furniture that requires welding or the like for attachment of metal fittings, since a lock device is added, it may be necessary to add special welding equipment to the production line, which is difficult to handle.

An object of the present invention is to eliminate all such problems.

[0006]

The present invention takes the following means in order to achieve such an object.
That is, the door locking device according to the present invention includes a handle provided at each opening / closing end of a pair of doors, and a handle provided on one of the handles from a standby position that does not hinder the opening / closing of the door from the other handle. It is characterized by comprising a locking body which is rotatable up to a lock position which prohibits opening and closing of the door.

In order to prevent the handle from being required to be attached with high accuracy, each handle is provided with a tip handle portion and a shaft portion arranged on the door side of the tip handle portion. In addition, the locking body is rotatably fitted onto the shaft of one of the handles, and the distal end extended from the base is engaged with the outer periphery of the shaft of the other handle. Therefore, it is preferable to have an extension rod curved in a partial arc shape.

In order to carry out the present invention without sacrificing the appearance and the ease of use of the handle, the contour of the base end portion of the locking body and the contour of the tip end portion of the extending rod are made to correspond to each other. It is better to set it smaller than the contour of the pull tab.

In order to prevent the lock state from being unreasonably released by vibration or unexpected external force, the tip end portion of the extending rod in the locking body is curved so as to slightly exceed a quarter arc. It is desirable that the tip portion of the handle is engaged with the outer circumference of the shaft portion of the other handle by utilizing the elastic deformation of the member.

When the entire handle is fixed to the door, the locking body may be rotatably provided with respect to the handle, but at least one of the handles is provided with a rotatable tip handle portion. In this case, the locking body may be provided so as to be rotatable integrally with the handle of the handle.

The front handle portion of the handle may be circular or polygonal in a front view so that it can be pinched by a finger, or may be vertically long so that it can be pulled by a finger.

[0012]

With such a structure, the opening and closing ends of both doors are engaged with each other by rotating the locking body provided on one handle to engage the other locking handle. Will be connected through. Therefore, even if a large vibration is applied due to a disaster such as an earthquake, the contents stored inside collapse and the door is pressed from the inside, or the furniture tilts or falls, the both doors can maintain the closed state. It will be. Moreover, in the present invention, since the locking body is provided only in association with the handles of both doors, it is not necessary to assemble any special parts other than the handles to the doors.

Further, the locking body is provided with a base end portion rotatably fitted on the shaft portion and an extending portion having a curved tip end portion engageable with the outer circumference of the shaft portion. If so, both handles can be made to have exactly the same shape, and the number of types of parts can be reduced. Moreover, even if there is some error in the mounting position of the handle, it is possible to use the deformation of the member to engage the tip part of the locking body with the outer periphery of the shaft part of the handle. Assembly work becomes easy.

Further, if the contour of the base end portion of the locking body and the contour of the tip end portion of the extending rod are set smaller than the contours of the corresponding tip pull tab portions, the protrusion on the outer periphery of the handle is eliminated. The door opening / closing operation can be performed in substantially the same manner as the case of operating a normal handle without such a locking body.

Further, if the tip portion of the extending portion of the locking body can be engaged with the shaft portion of the hand by utilizing the temporary elastic deformation of the member, when the locking body is removed from the hand. Therefore, it becomes necessary to apply a rotation operation force of a certain level or more. Therefore, it is possible to easily and reliably reduce the possibility that the locking body will come off due to vibration or unexpected external force.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, the lock device 3 according to the present invention is provided on the pair of doors 2A and 2B of the storage furniture 1.

The doors 2A, 2B have the outer edge 4 of the furniture main body 5
It is a double-door type that is hinged on and is configured so that it can be opened to the front while being divided into left and right, as shown by the imaginary line in FIG.

As shown in FIGS. 2 to 7, the lock device 3 includes handles 7A and 7B provided on the open / close ends 6 of both doors 2A and 2B, and a door 2A provided on one handle 7A.
Locking body rotatable from a standby position (see FIG. 3) that does not hinder opening and closing of 2B to a lock position (see FIG. 2) that engages with the other handle 7B and prohibits opening and closing of the doors 2A and 2B. And 8.

Both handles 7A and 7B are the same, and are provided with a tip handle portion 11 and a shaft portion 12 arranged on the door 2A, 2B side of the tip handle portion 11. Specifically, the tip pulling portion 11 is a thick disk-like member and has a screw hole 13 in the center of the back surface. The shaft portion 12 has a cylindrical shape with a diameter smaller than that of the tip pull portion 11, and a front bolt portion 14 is provided at the center of the front end surface of the shaft portion 12. Then, the front bolt portion 14 is screwed into the screw hole 13 so that the tip pull portion 11 and the shaft portion 12 are coupled to each other. A flange portion 15 having substantially the same diameter as that of the tip pull portion 11 is integrally formed on the rear surface side of the shaft portion 12, and a rear bolt portion 16 is projectingly provided at a central portion of the rear surface of the flange portion 15. Then, after that, the bolt portion 16 is penetrated through the doors 2A and 2B, and the nut 17 is screwed to the penetrating end, so that the handles 7A and 7B are attached to the door 2A.
It is attached to A and 2B.

The locking body 8 has a base end portion 18 rotatably fitted on the shaft portion 12 of one handle 7A, and a tip end portion 19a extending from the base end portion 18 and a shaft of the other handle 7B. The extension rod 19 is curved in a partial arc shape so as to engage with the outer periphery of the portion 12, and the contour of the base end portion 18 and the contour of the tip end portion 19a of the extension rod 19 correspond to each other. Tip pull part 1
It is set smaller than the contour of 1. Specifically, the base end portion 18 is a circular ring-shaped member that is rotatably fitted to the outer periphery of the shaft portion 12, and the outer diameter thereof is the tip end pulling portion 11.
It is set to be slightly smaller than the outer diameter of. In addition, extension rod 1
Reference numeral 9 indicates a rectangular cross section, and an inner edge 19b thereof is chamfered. A tip portion 19a thereof is curved so as to slightly exceed a quarter arc, and an outer diameter of the tip portion 19a is a handle. It is set to be slightly smaller than the outer diameter of the tip pulling portions 11 of 7A and 7B.

With such a construction, the locking body 8 provided on one handle 7A is rotated to engage with the other handle 7B, whereby the open / close end portions 6 of the two doors 2A, 2B.
The two are connected to each other via the locking body 8. Specifically, for example, the engagement body 8 is moved to the standby position as shown in FIG.
In the state of waiting for, each handle 7A,
The corresponding doors 2A and 2B can be freely opened and closed by pinching and pushing or pressing 7B.
From this state, when the locking body 8 is rotated in the clockwise direction in the drawing, the locking body 8 passes through an intermediate stage as shown in FIG.
The tip end portion 19a of the extending portion 19 of the second engaging portion engages with the shaft portion 12 of the other handle 7B. Both doors 2A, 2 by it
Opening of B is prohibited. Further, in this embodiment, the tip end portion 19a is curved in a shape slightly exceeding a quarter arc, and the tip end 19c of the tip end portion 19a of the locking body 8 is provided on the outer periphery of the shaft portion 12 of the handle 7B. When sliding over and overcoming, mainly the extending portion 19 of the locking body 8 is temporarily elastically deformed by a dimension substantially corresponding to the distance S. Therefore, once the locking body 8 is engaged with the handle 7B, the locked state cannot be released unless the locking body 8 is applied with an upward operation force of a certain amount or more. Therefore, a large vibration is applied due to an earthquake or other disaster,
Even if the stored items collapse and the doors 2A, 2B are pressed from the inside, or the storage furniture 1 tilts or falls,
Both doors 2A and 2B can maintain the closed state. Therefore, it is possible to solve the problem that the stored items are thrown out and scattered to the outside. Although the distance S is exaggerated in the drawing, it is actually 0.
About 3 mm is preferable.

Moreover, in this lock device 3, since the locking body 8 is supported by the handle 7A of the one door 2A and the tip portion 19a thereof is engaged with the handle 7B of the other door 2B. In addition to the handles 7A and 7B, it is not necessary to assemble special parts for locking the doors 2A and 2B on the doors 2A and 2B. Therefore, an increase in the number of parts can be effectively suppressed, and the manufacturing process for assembling various parts to the doors 2A and 2B can be made substantially the same as that having no lock function. That is, instead of attaching a normal handle to the doors 2A and 2B, a handle 7A for holding the locking body 8 and a handle 7 for engaging the locking body 8 are provided.
By simply attaching B to the doors 2A and 2B, the lock function can be provided to the doors 2A and 2B, and there is no other factor that increases the number of assembling steps.

Further, since the outer diameter of the base end portion 18 of the locking body 8 and the outer diameter of the tip end portion 19a of the extension rod 19 are set to be smaller than the outer diameter of the corresponding tip puller portion 11, There is no protrusion on the outer circumference of the handles 7A and 7B. Therefore, it is possible to open and close the doors 2A and 2B in substantially the same manner as when operating a normal handle that does not have the locking body 8.

Further, if the locking body 8 is constructed as described above, the handles 7A, 7 provided on the left and right doors 2A, 2B.
It is possible to make B the exact same form, and it is possible to reduce the types of parts.

The door is not limited to that shown in the illustrated embodiment, but may be used for built-in furniture or the like. The direction of opening and closing is not limited to the left and right, and may be up and down. Various materials such as steel, wood, synthetic resin, etc. can be considered as the material of the door, and any of the materials can obtain the above-described effects.
In particular, when the door is made of steel, it is possible to solve the problem that a special welding process is required for assembling the locking device, and it is possible to simplify the manufacturing equipment, which is a particularly beneficial effect. can get.

The structure of the handle is not limited to the one described above, but various modifications are possible. For example, the structure shown in FIG. 8 may be used. Each of the handles 107A and 107B shown in FIG. 8 is provided with a vertically long front end pull tab portion 111 on which a finger can be hooked, and a shaft portion 112 is arranged on the rear surface side of the upper end portion of the front pull tab portion 111.
Also in this case, the base end portion 118 of the locking body 108 similar to that of the above-described embodiment is rotatably fitted onto the shaft portion 112 of the one handle 107A, and the extension rod 119 of the locking body 108 is fixed. The tip portion 119a is adapted to be engaged with the shaft portion 112 of the other handle 107B. The shape of the tip pull portion is not limited to that shown in the figure, and various modifications are possible. Further, the position of the shaft portion is not limited to that shown in the figure, and for example, the shaft portion may be arranged on the rear surface of the lower end of the tip pull tab 111 shown in FIG.

Further, the structure of the locking body is not limited to that described above, but may be as shown in FIGS. 9 and 10. That is, this locking body 208
As shown in FIG. 9 which is a front view and FIG. 10 which is a bottom view, is a plate-shaped member having a circular hole 220 at the base end portion 218 to be fitted on the shaft portion of one handle. At the same time, a concave portion 221 that engages with the shaft portion of the other handle is provided on the tip side. A partially arcuate tip portion 219a formed by the recessed portion 221 is curved so as to slightly exceed a quarter arc as in the above-described embodiment.

In the embodiment described above, the case where the entire handle is fixed to the door has been described.
You may use the handle which was able to rotate at least a front-end handle part. In this case, the locking body may be configured so as to be rotatable integrally with the distal end pulling portion. With this configuration, the locking body can be engaged with and disengaged from the other handle by pinching the front handle portion of the one handle and rotating the handle forward and backward.

Besides, various modifications can be made without departing from the spirit of the present invention.

[0031]

As described in detail above, according to the present invention,
Both doors can be locked in the closed position by rotating the locking body provided on one handle to engage the other handle. Therefore, even if a large vibration is applied due to a disaster such as an earthquake, the contents stored inside collapse and the door is pressed from the inside, or the furniture tilts or falls, the both doors can maintain the closed state. It will be. Therefore,
It is possible to solve the problem that the stored items are thrown out and scattered to the outside.

Moreover, in the present invention, since the locking body is provided only in association with the handles of both doors, the locking function can be exerted without assembling special parts other than the handles to the doors. Therefore, not only is it easy to reduce the number of parts and simplify the structure, but regardless of the type and material of the door,
It is possible to assemble a specification with a lock function and a specification without a lock function in substantially the same procedure. Therefore, it is possible to effectively prevent the manufacturing facility from becoming complicated and the work procedure from becoming complicated.

Further, as in the invention described in claim 2, the locking body has a base end portion rotatably fitted on the shaft portion and a curved tip end portion engageable with the outer circumference of the shaft portion. If it is provided with the extension part, both handles can be made to have the same shape, and it is possible to reduce the number of types of parts and the number of manufacturing steps. . Also,
If the locking body is engaged with the outer periphery of the shaft portion, for example, the dimensional accuracy required when the hook-shaped tip portion of the locking body is engaged with the engagement hole formed in the other protrusion is obtained. In comparison, it is possible to exert a sufficient function with lower accuracy. Therefore, the work of parts and the attachment work of the handle are relatively easy.

Further, according to the third aspect of the present invention, since there is no protrusion on the outer periphery of the handle, the door opening / closing operation is performed in substantially the same manner as the case of operating a normal handle without such a locking body. It becomes possible and the usability becomes good.

According to the invention of claim 4, it is possible to reasonably reduce the possibility that the locking body will be disengaged due to vibration or unexpected external force, and more reliably prevent the improper opening of the door due to an earthquake or the like. It becomes possible to do.

Further, according to the fifth aspect of the invention, since the locking body can be engaged with and disengaged from the other handle by rotating one of the handles, the handles of both doors approach each other. Therefore, in the case of a structure in which it is difficult to directly operate the locking body, it is effective in improving the operability.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a front view showing a main part of the embodiment.

FIG. 3 is a front view showing a main part of the embodiment.

FIG. 4 is a cross-sectional view taken along the line AA in FIG.

5 is a sectional view taken along line BB in FIG.

FIG. 6 is a perspective view showing a main part of the embodiment.

FIG. 7 is an exploded perspective view showing a main part of the embodiment.

FIG. 8 is a perspective view showing another embodiment of the present invention.

FIG. 9 is a front view showing still another embodiment of the present invention.

FIG. 10 is a bottom view showing the embodiment.

[Explanation of symbols]

 2A, 2B ... Door 3 ... Locking device 6 ... Opening / closing end 7A, 7B ... Handle 8 ... Locking body 11 ... Tip pull part 12 ... Shaft part 18 ... Base end 19 ... Extending rod 19a ... Tip part 107A, 107B ... Handle 108 ... Locking body 111 ... Tip pull part 112 ... Shaft part 118 ... Base end part 119 ... Extension rod 119a ... Tip part 208 ... Locking body 218 ... Base end part 219a ... Tip part

Claims (5)

[Claims] Claims: 1. Handles respectively provided at the opening and closing ends of a pair of doors, and a lock that engages with the other handle from a standby position provided on one handle so as not to prevent the door from opening and closing. A lock device for a door, comprising a locking body rotatable up to a position. 2. Each handle is provided with a tip handle portion and a shaft portion disposed closer to the door than the tip handle portion, and the locking body is provided on the shaft portion of one handle. A rotatably fitted base end portion and an extending rod extending from the base end portion and curved in a partial arc shape so that the tip end portion engages with the outer periphery of the shaft portion of the other handle. The door locking device according to claim 1, wherein: 3. The door according to claim 2, wherein the contour of the base end portion of the locking body and the contour of the tip end portion of the extending rod are set smaller than the contours of the corresponding tip pull tab portions. Locking device. 4. A tip portion of the extending rod of the engaging body is curved to an angular position slightly exceeding a quarter arc, and the tip portion is made to utilize the elastic deformation of the member to make the shaft portion of the other handle. The door locking device according to claim 2, wherein the door locking device is engaged with the outer periphery. 5. At least one of the handles is provided with a rotatable front end pulling portion, and the locking body is provided so as to be rotatable integrally with the front end pulling portion of the handle. The door locking device according to item 1, 2, 3 or 4.