JP2758874B2 - Door latch lock device and lock fitting used therefor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can prevent the door from being opened even when furniture falls down in the event of an earthquake or the like, prevent scattering of stored items, and open the door with good operability simply by pulling a handle. In addition, a latching lock device for a door and a lock used for the door can be formed by using the same component to form a linkage lock and a latch lock provided with a latch that are linked to a handle. About metal fittings.

[0002]

2. Description of the Related Art A storage device such as furniture whose door opening is closed by an opening door can relatively easily open the door when it falls down in the event of an earthquake or the like, and scatters internal storage items to the outside. It may be destroyed.

[0003] For this reason, various hardware for preventing inadvertent opening of the door is commercially available separately from the above-mentioned storage tool.

[0004]

However, when a commercially available hardware is attached to the storage device, it is necessary to release the lock of the hardware and pull the handle to open the door, and two operations are required when the door is opened. It is inconvenient, and usually,
Since the hardware is attached to the outer surface of the storage device, the appearance tends to deteriorate.

Further, since the handle and door closing means of the storage device such as furniture are separate from commercially available hardware, different members are used as means for preventing the door from being inadvertently opened. But it is not economical.

According to the present invention, there is provided a latch base for a latch provided with a latch, which can be disengaged by pulling a handle, and a retractable piece which can be moved together with the latch in conjunction with the handle. The latch is locked to the latch receiver when the door is closed, based on the same shape as the base of the provided locking metal fitting, so that even when the furniture falls down, the door is prevented from opening and the handle is pulled. It is an object of the present invention to provide a door latch lock device which can easily open a door and can unify components, and a lock used therefor.

[0007]

According to a first aspect of the present invention, there is provided a door latch lock device, comprising: a lock body provided on a door; and a latch receiver provided on a door opening for pivotally supporting the door. The lock body is provided with a handle provided on the outer surface of the door, the handle portion being capable of being pulled away from the outer surface of the door, and a handle provided on the inner surface of the door opposite to the handle with the handle interposed therebetween. A linking metal fitting provided on the base body with an advancing / retreating piece that moves substantially parallel to the door surface by the pulling movement; and a latching metal fitting provided on the base body with a latch that moves substantially parallel to the door surface, and The latch and the reciprocating piece are linked to each other via a rod so that the latch can be disengaged from the latch receiver by pulling the handle, and the latch can be locked to the latch receiver when the door is closed. And the reciprocating piece and the latch are substantially the same. And the base of the lock fittings for lock fittings and latch for the linkage are the same shape.

The handle may be provided at a plurality of different positions on the door, and may be linked to a lock or latch for lock located on the inner surface of the door opposite to the handle with the door interposed therebetween. It is desirable that a handle can be provided at a position where it can be easily gripped, thereby improving usability.

Further, in the lock according to the present invention, a mounting member for mounting the rod is provided on a middle member having the reciprocating piece or a middle member having a latch.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 6, a door latch lock device 1 according to the present invention includes a lock body 2 provided on an open door-like door D.
And a latch receiver 3 provided at a door opening for pivotally supporting the door D.

As shown in FIG. 2, the latch receiver 3 has a vertical portion other than an L-shaped bracket 21 whose one piece is attached to the vicinity of the door opening of the storage furniture A and to the lower surface of the top plate 20 using a fixing tool such as a screw. Formed by pieces. The latch receiver 3 may be provided on the side plate 22, bottom plate, fixed shelf, or the like of the storage furniture A.

The lock body 2 includes a handle 5 provided on the outer surface of the door D and having a handle 4 that can be pulled away from the outer surface of the door D, and a door opposite to the handle 5 with the handle D interposed therebetween. A linking metal fitting 9 provided on the base body 7 with an advancing / retreating piece 6 provided on the inner surface of the base D and moved substantially in parallel with the door surface by the pulling movement of the handle 5, and a door D above the locking metal fitting 9 for this linking. A latch 10 provided on a base 11 and having a latch 10 provided on an inner surface thereof and moving substantially parallel to a door surface;
The latch 10 can be detached from the latch receiver 3 by the pulling operation of the handle 5 by linking the 0 and the reciprocating piece 6 via the rod 40 so as to be able to move.

Therefore, in this embodiment, the latch 10
Is operated by the pulling operation of the handle 5.
From the latch receiver 3 via.

The reciprocating piece 6 and the latch 10 have substantially the same shape.
Further, the bases 7 and 11 of the linking lock 9 and the latching lock 12 have the same shape, and the linking lock 9 and the latching lock 12 have the same configuration. The configuration of the lock 9 will be described as a representative.

An outer surface portion of the door D to which the handle 5 is attached;
In this embodiment, the outer surface of the door D is a flat surface 17 that is vertical over the entire area.

As shown in FIGS. 1 and 3, the lock 9 for linking has a rectangular flat outer piece 23 fixed to the inner surface of the door D using a fixing tool such as a screw. A base 7 having a base frame 27 composed of a horizontal upper piece 24, vertical side pieces 25 and 25, and a horizontal lower piece 26 protruding inwardly from the inner surface of the piece 23 in a rectangular box shape. One middle member 29 (hereinafter, referred to as “the inside”) that is disposed inside the base
, And an inner member 30 disposed inside the middle member 29.

The outer piece 23 of the base 7 is
The door D is provided with two ear pieces 31, 31 extending laterally from 5, 25, and through two vertically extending long holes 31 a provided two at a time on each of the ear pieces 31, 31. The base 7 is fixed to the inner surface of the door D in such a manner that the position of the base 7 can be adjusted in the vertical direction by the length of the long hole 31a using a fixing tool such as the screw screwed to the inner surface.

The outer piece 23 surrounded by the base frame 27
In the center portion of the base frame 27, a long hole 23A extending in the vertical direction is formed, and the upper piece 24 of the base frame 27 has a hole 24A.
And a rectangular latch hole 24B located inward of the hole 24B, and a hole 26A having a diameter substantially the same as that of the hole 24A, which is located immediately below the hole 24A, is formed in the lower piece 26. Is provided.

Further, on each of the faces of the side pieces 25, 25 of the base frame 27, a horizontal groove portion 32, which is perpendicular to the outer piece 23, is provided at two upper and lower positions with the same height between the respective faces. In addition, the side piece 25 is continuously recessed between the inner and outer ends without interruption.

The middle member 29 has a vertical and rectangular base 33 along the inner surface of the outer piece 23, projects inward from four sides of the base 33, and is slightly outside the inner end of the base frame 27. A base 39 having a horizontal top piece 34, a bottom piece 35, and a rectangular box-shaped peripheral portion 37 including vertical side frame pieces 36, 36, and the upper piece 34 of the base 39.
The reciprocating piece 6 which is inserted into the latch hole 24B and rises is integrally provided on the upper surface.

On the upper surface of the upper piece 34 and outside the advancing / retreating piece 6, a screw portion 4 provided at the lower end of the rod 40 inserted into the hole 24A and substantially parallel to the direction of the door surface is provided.
A screw hole 34A into which 0A is screwed is formed. Further, as the middle member 29, in addition to the box-shaped member described above, any member having the reciprocating piece 6 may be used, and various shapes may be employed.

Further, the lower surface of the bottom piece 35 and the screw hole 3
A screw hole 35A into which a screw portion 40B provided at the upper end of the rod 40 that can be inserted into the hole portion 26A can be screwed is formed directly below the screw hole 4A. In the present embodiment, the screw hole 35A and the screw hole 35A are formed. 34A, the intermediate member 29 having the reciprocating piece 6
Mounting portion 13, which is provided on the
13, and at the center of the base piece 33,
An elongated hole 33A extending in the vertical direction is formed. In addition to the screw holes, various attachment members 13 may be used, such as a hole through which the screw portion of the rod 40 passes and a nut which is screwed to the screw portion. sell.

The side frame pieces 36, 36 are provided with oblong holes 36A extending obliquely upward from the inside to the outside at two upper and lower positions, respectively.

The inner member 30 is connected to the middle member 29.
A rectangular substrate 41 of a size that can be accommodated therein and parallel to the base piece 33, and a small-sized extending piece 42 extending outward from four sides thereof. , Through the elongated holes 36A, 36A and the groove 3
A total of four pins 43 are slidably inserted into the pins 2 and 32 at two upper and lower positions.

In the center of the substrate 41, a long hole 41A extending vertically is formed. Also, the middle member 2
9 is an upper piece 34 inside and outside the reciprocating piece 6 by a spring 44 bridged between the upper face of the lower piece 26 and the lower face of the bottom piece 35.
The upper surface is in contact with the lower surface of the upper piece 24, and is urged upward so that the reciprocating piece 6 protrudes to the maximum from the latch hole 24B.

Linking lock 9 having such a configuration
Is fixed to the inner surface of the door D with the handle 5 interposed therebetween. The handle 5 includes an inner portion 47 extending inward from the central substantially circular constricted portion 46 while increasing in diameter, and an outer portion extending from the constricted portion 46 to increase in diameter outward and having an elliptical outer end surface 49A. And a handle part (4) comprising a part (49). Therefore, a valley-shaped portion 8 is formed at the inward position of the handle portion 4 by the constricted portion 46 so that the handle portion 4 can be easily grasped.

The inner end surface 47 of the inner portion 47 of the handle 4
A is formed flat so as to directly contact the flat outer surface (flat surface 17) of the door D. A screw hole 50 is formed in the center of the inner end surface 47A.

The handle 5 passes through the elongated hole 41A provided in the inner member 30 of the lock member 9 for linkage fixed to the inner surface of the door D, and passes through the elongated hole 33 of the middle member 29.
A, and a shaft having a rectangular cross-section that is inserted while being prevented from rotating in a rectangular hole 51A drilled at the center of a guide nut 51 shaped like a bar nut through a long hole 23A of the base 7 and embedded in a door D. A horizontal pivot 15 having a body 52 and a screw portion 16 abutting on the outer end thereof and being screwed into the screw hole 50 and having a smaller diameter than the shaft body 52, allows the inner end surface to be formed on the outer surface of the door D. 47A is attached by directly abutting the 47A. Therefore, for example, a washer does not enter between the outer surface of the door D and the inner end surface 47A of the handle 5, and the danger of damaging the door D due to the inclination of the washer or the like is eliminated.

The pivot 1 for attaching the handle 5 through the door D
5 is provided with a screw portion 16 which is screwed into the screw hole 50 at an outer end near the position protruding from the door D,
By changing the length of the screw portion, the mounting position of the handle 5 can be changed, and it is possible to cope with a change in the thickness of the door D. In addition, since the screw portion 16 does not hit the door D, Smooth 15 movements. Further, at least the outer surface portion of the door D to which the handle 5 is attached is flat, and the flat inner end surface 47A of the handle 5 directly contacts the outer surface portion forming the flat surface 17, so that the handle 5 is mounted in a stable state. The handle 5 can be stably brought into contact with the door D even when the handle portion 4 of the handle 5 is pulled and released.

The screw portion 1 screwed into the screw hole 50
The end of a stop screw 54 screwed into the handle 6 from the side surface of the handle 5 is locked to prevent the screw portion 16 from being loosened.

Further, the handle 5 is moved horizontally by the pivot 15 perpendicular to the outer surface of the door D.
Link to That is, when the user grips the handle 4 of the handle 5 and pulls the handle 4 away from the outer surface of the door D, the inner member 30 is pushed by the head 15A of the pivot 15 that moves outward. 1 from the state shown in FIG. 1 to the state shown in FIG.
2 by means of the pins 43 inserted into
9 descends against the urging force of the spring 44 to sink the advance / retreat piece 6. Here, when the hand is released from the handle portion 4, the middle member 29 is raised by the urging force of the spring 44, and accordingly, the inner end surface 47A of the handle portion 4 is directly on the outer surface of the door D.
The handle 5 automatically moves inward until it comes into contact.

As described above, since the pin 34 moves while being guided by the groove 32, the intermediate member 29 can be operated stably, and the operation reliability of the apparatus can be improved.

The elongated holes 41A and 33 through which the pivot 15 passes.
Since A and 23A extend in the vertical direction, the long holes 41A and
The position of the pivot 15 can be changed by the shorter one of the lengths 33A and 23A, and in this embodiment, the mounting position of the handle 5 can be changed in the vertical direction. It can be set to an easy position.

As shown in FIGS. 5 and 6, the handle 4 is provided with a horizontal plane F1 or a vertical plane F2 passing through the center of the pivot 15.
Bulge portion 14 extending in the direction of the vertical plane F2 in this embodiment.
In the outer portion 49, and is plane-symmetric with respect to the horizontal plane F1 or the vertical plane F2, in this embodiment, both the horizontal plane F1 and the vertical plane F2.

Therefore, when the handle 4 is gripped and pulled, the force is not eccentric with respect to the pivot 15, so that the door D can be opened smoothly, and damage to the pivot 15 and the like due to the eccentric force is prevented, and the durability is improved. Can improve.

The latch lock 12 has the same structure as the linkage lock 9, and therefore, in this specification, only the name of the base 7 is changed to the base 11, and the reciprocating piece 6 is changed to the latch 10, and the remaining parts are changed. The names and symbols of the members used are the same as those used for the lock member 9 for linking (the other middle members are also simply referred to as “medium members 29”).
Say) .

In this embodiment, the latch 12 is shown in FIG.
As shown in FIG. 2, the lock member 9 for linkage is fixed directly above the inner surface of the door D and the middle member 29 of the lock member 12 for latching and the middle member 29 of the lock member 9 for linkage are A lower screw portion 40A is screwed into the screw hole 34A (attachment portion 13) through the hole 24A of the upper piece 24 of the link lock 9, and the lower piece 26 of the latch 12 is latched. Hole 2
The upper screw portion 40B passing through 6A is connected by the rod 40 screwed into the screw hole 35A (the mounting portion 13).

The rod 40 is provided with a length adjusting means 56 such as a tie rod capable of adjusting the length.

Accordingly, the latch 10 is moved down substantially in parallel with the door surface together with the reciprocating piece 6 which moves down by the pulling movement of the handle 5 via the rod 40, and furthermore, the hand is released from the handle portion 4. And the latch 10 and the reciprocating piece 6 can simultaneously move upward.

As described above, the latch 10 and the reciprocating piece 6 are linked to each other via the rod 40, that is, are linked so as to be simultaneously movable in the same direction and the same distance. 1 can be shifted from a state in which the door D is closed and the latch 10 is locked to the latch receiver 3 to a state in which the latch 10 shown in FIG.

Therefore, in this embodiment, the latch 10
It is linked to the handle 5 via the pivot 15, the link 9 and the rod 40.

The linking lock 9 linked to the handle 5 through the pivot 15 and the latch lock 12 having the latch 10 locked by the latch receiver 3 are connected to the reciprocating piece 6, the latch Since the base 10 and the base 11 have the same shape, that is, have the same configuration, that is, the base 10 and the base 11 have the same configuration, the lock 9 for the linkage and the lock 12 for the latch can be formed of the same component.
The parts can be unified, resulting in manufacturing advantages.

Further, since the rod 40 is arranged inside the door D at a distance from the door D and substantially in parallel with the door surface, the door D is required more than the rod D is built in the door D. It is not necessary to make the handle 5 thicker, maintenance can be easily performed, and the mounting position of the linking lock 9 linked to the latch 12 can be selected at any position on the inner surface of the door D. The mounting position can be changed freely.

Also, the latch 10 locked by the latch receiver 3 can be disengaged from the latch receiver 3 and the door D can be opened by only a simple operation of grasping and pulling the handle portion 4, thereby improving operability. When the door D is closed, the latch 10 is moved downward by the spring 44 when the curved surface portion 10A on the inner surface of the upper end of the latch hits the lower end of the latch receiver 3 and passes through the latch receiver 3 so as to be raised by the spring 44. Because the door is automatically locked, the door D does not open even if the storage furniture A falls down in the event of an earthquake or the like, and scattering of the stored items can be prevented.

It should be noted that the latch receiver 3 is attached to the side plate 2 of the storage furniture A.
Attach to 2 etc., lock 9 for linkage, lock 1 for latch
It is also possible to use the rod 40 horizontally by turning the rod 2 sideways.

FIGS. 7 and 8 show another embodiment of the present invention. In this embodiment, the handles 5 are provided at a plurality of, for example, two, vertically different positions of the door D, and the handles 5, 5 are located on the inner surface of the door D at positions opposite to the door D with the handles 5 and 5 interposed therebetween. Lock 9 for latching and the latch 12 for latching.

The lock 9 for the linkage and the lock 1 for the latch
As shown in FIG. 8, the handle 5 is connected to the locks 9 and 12 for linkage and latch via the pivots 15 and 15, respectively. The door D can be opened by releasing the latch 10 from the latch receiver 3 by one of the pulling movements.

As described above, the handles 5, 5 are provided on the outer surface of the door D at a plurality of positions in the vertical direction, so that it is possible to improve the usability for persons with different heights such as adults and children.

Also, handles 5... Which can be pulled and moved at a plurality of positions in the horizontal direction can be provided on the outer surface of the door D. In this case, even if the door D is a horizontally long type, the usability can be improved. , The degree of freedom of design can be expanded.

Further, as shown in FIGS. 9 and 10, the linkage lock 9 or the latch lock 12 can be used alone, and is effective when the rod 40 is not required. .

[0051]

As described above, the latch device for a door according to the first aspect of the present invention provides a handle provided on the outer surface of the door, the handle portion of which can be pulled, and a position opposite to the handle with the door interposed therebetween. A pulling member provided on the inner surface of the door, which is provided on the base body with an advancing / removing piece that moves by the pulling movement of the handle, and a pulling movement of the handle by being movably linked to the advancing / removing piece via a rod; And a lock for the latch that allows the latch to be detached from the latch receiver, and the latch can be locked to the latch receiver when the door is closed. Therefore, when the door is closed, the latch is locked by the latch receiver, so that even if furniture or the like falls down in the event of an earthquake or the like, the door can be reliably prevented from being opened, and scattering or damage to stored items may occur. The latch can be disengaged from the latch receiver by pulling the handle, so that when the door is opened, only one operation of pulling the handle is required, and even the elderly, the physically handicapped, and infants can easily operate the latch. And operability can be improved.

Further, since the advancing / retreating piece and the latch have substantially the same shape, and the bases of the linking lock and the latch lock have the same shape, the linking lock and the latch lock are connected. Since the components can be constituted by the same components and the components can be unified, manufacturing and management costs can be reduced.

According to the second aspect of the present invention, when the handles are provided at a plurality of different positions on the door, and the handles are respectively linked to a linking lock or a latching lock, for example, when the handles have different heights. A handle can be provided at the position to accommodate people with different heights, such as for adults and children, and can also be deployed horizontally, for example, it is possible to use a handle that is easy to hold with unoccupied left and right hands etc. In addition, the usability can be improved and the degree of freedom in design can be increased.

Further, according to the third aspect of the present invention,
One middle member having the reciprocating piece or the other having a latch
Since the mounting portion for mounting the rod is provided on the middle member, the rod can be easily mounted on the lock,
The use of the locks can be increased and the versatility can be increased, for example, the linkage between the two locks can be performed conveniently, and the rod can be securely fixed in response to the movement of the one or other middle member having the reciprocating piece or the latch. And the reliability of the operation of the door latch lock device can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an example of an embodiment of the present invention.

FIG. 2 is a perspective view illustrating storage furniture to which the door latch lock device of the present invention can be applied;

FIG. 3 is an exploded perspective view showing an example of an embodiment of a linkage lock.

FIG. 4 is a cross-sectional view showing a state where a handle is pulled and moved.

FIG. 5 is a cross-sectional view showing an example of an embodiment of a handle.

FIG. 6 is a rear view showing the outer end surface of the handle.

FIG. 7 is a cross-sectional view showing another embodiment of the present invention.

FIG. 8 is a sectional view showing a state where the handle is pulled and moved.

FIG. 9 is a cross-sectional view showing a case in which a link lock or a latch lock is used alone.

FIG. 10 is a sectional view showing a state where the handle is pulled and moved.

[Explanation of symbols]

 2 Lock body 3 Latch receiver 4 Handle part 5 Handle 6 Reciprocating piece 7 Base 9 Linkage lock 10 Latch 11 Base 12 Latch lock 13 Mounting part 29 Middle member 40 Rod D door

Claims (3)

(57) [Claims] 1. A lock body provided on a door, and a latch receiver provided on a door opening for pivotally supporting the door. The lock body is provided on an outer surface of the door and is pulled in a direction in which a handle is separated from the outer surface of the door. A movable handle, and a link lock provided on the base body, wherein the handle is provided on an inner surface of the door at an opposite position across the door and provided with an advancing / retreating piece that moves substantially parallel to the door surface by the pulling movement of the handle. ,
A latch lock provided on the base body having a latch that moves substantially in parallel with the door surface, and the latch and the reciprocating piece are linked to each other via a rod so as to be able to move together, so that the latch is pulled by the handle. Can be disengaged from the latch receiver, and at the time of closing the door, the latch can be locked to the latch receiver, and the advancing / retreating piece and the latch have substantially the same shape, and a lock fitting for cooperation and a lock fitting for latch are used. A latch latch device for a door, wherein the base has the same shape. 2. The handle is provided at a plurality of different positions on the door, and is linked to a lock for latch or a lock for latch located on the inner surface of the door opposite to the handle with the door interposed therebetween. The door latch lock device according to claim 1, wherein: 3. A door latch lock device according to claim 1.
A lock fitting, wherein the reciprocating piece is substantially parallel to a door surface by the pulling movement of the handle.
The latch is provided on one middle member capable of moving the base, and the latch is movable substantially parallel to the door surface.
A lock used for a door latch lock device provided with an attachment portion for attaching the rod to one middle member having an advancing and retreating piece or another middle member having a latch, which is provided on the base via a material .