JP4599180B2 - Door lock device - Google Patents

Description

  The present invention relates to a door locking device that locks a door such as a cupboard so that it is not inadvertently opened by an impact such as an earthquake, and more particularly, to be installed later on a ready-made cupboard. The present invention relates to a unit type door lock device.

2. Description of the Related Art Conventionally, as this type of door locking device, a configuration as shown in FIGS. 8 and 9 is known. The lock device 1 includes an open / close door 3 provided on a door frame 2, a base 4 attached to the open / close door 3, lock arms 5 and 5 held by the base 4, and tips of the lock arms 5 and 5. Lock groove members 7, 7 into which strikers 6, 6 provided in the section are fitted, an operation knob 8 connected to the base 4, and a link mechanism for projecting and retracting the lock arms 5, 5 in accordance with the operation of the operation knob 8 9 (see Patent Document 1).
Japanese Patent Laid-Open No. 8-312226

  In this conventional locking device, since it has a link mechanism and various members, the structure is complicated, the number of parts is large, the manufacturing cost is high, the weight is increased, and the possibility of failure is high. Has drawbacks.

  In addition, because of the complexity of the structure of the locking device as described above, there is a drawback that it is practically impossible for a general user to install retrofit on a ready-made cupboard. Yes.

  Therefore, in the lock device in the conventional example, the structure is simplified to reduce the manufacturing cost, the weight is reduced, and the general user can install the retrofit on the ready-made cupboard etc. And have problems that must be solved.

  As a specific means for solving the problems of the conventional example, the present invention includes a storage case of a predetermined size, a pair of gears which are provided in the storage case and mesh with each other, and protrudes or rotates as the gear rotates. A pair of retreating lock rods, a receiving member provided for fitting the tip of the lock rod, a shaft connected to one gear, and a handle attached to the tip of the shaft are configured as one unit. The pair of gears is provided with a door locking device in which an urging means is provided to rotate in the protruding direction of the lock rod.

  Further, the biasing means is configured to be a spring material laid horizontally on the side portions of both gears, and the lock rod is configured to be provided with length adjusting means. In addition, the handle is configured to be appropriately selected and attached in various shapes or designs.

A door locking device according to the present invention includes a storage case of a predetermined size, a pair of gears which are provided in the storage case and mesh with each other, and a pair of lock rods which protrude or retract as the gear rotates. And a receiving member provided for fitting the tip of the lock rod, a shaft connected to one of the gears, and a handle attached to the tip of the shaft. The urging means is provided to rotate in the protruding direction of the lock rod, so that the structure is simpler than the conventional lock device, the manufacturing cost is reduced and the weight is reduced. In addition, the possibility of failure due to vibration or the like is reduced.
Further, since the locking device is unitized, various excellent effects can be achieved that a general user can install retrofit on a ready-made cupboard or the like.

  Further, since the biasing means is a spring material laid horizontally on the side portions of both gears, the gear is always biased in the protruding direction of the lock rod. It will be fitted with the receiving member. In other words, an excellent effect is achieved that the locked state of the door is automatically maintained.

  The lock bar has an excellent effect that it can be used for cupboards of various sizes by providing the length adjusting means.

  Furthermore, the handle is configured so that it can be appropriately selected and attached in various shapes or designs, so that a handle according to the user's preference can be provided, and the tableware as an interior There is an excellent effect that the design of the cupboard etc. is not impaired.

  Next, embodiments of the present invention will be described with reference to the drawings. First, in FIGS. 1 to 3, reference numeral 11 denotes a door locking device. The locking device 11 includes a storage case 12 having a predetermined size and a pair of gears 13 and 14 provided in the storage case 12. A pair of lock rods 15 and 16 that project or retract as the gears 13 and 14 rotate, and receiving members 17 and 17 that are provided to fit the tip portions 15a and 16a of the lock rods 15 and 16; The shaft 18 connected to one gear 14 and the handle 19 attached to the tip of the shaft 18 are configured as one unit.

The storage case 12 is formed in a thin box shape, and one side surface thereof is fixed to the inside of the door 20 such as a cupboard by a predetermined means such as screwing or adhesion. When the storage case 12 is screwed to the inside of the door 20, it is desirable that a small hole for inserting a screw is formed in the side surface of the storage case 12 (not shown).
Further, an insertion hole 21 having a predetermined size through which the lock rod 15 is inserted is formed in the upper part of the storage case 12. Similarly, an insertion hole 22 having a predetermined size through which the lock rod 16 is inserted is formed in the lower portion of the storage case 12.

  The gear 13 and the gear 14 are spur gears of the same shape and are arranged in mesh with each other, and the rotation of one gear is transmitted to the other gear and is rotated. A shaft portion 23 is provided at the center position of the gear 13, and both end portions of the shaft portion 23 are supported inside the storage case 12, so that the gear 13 is formed to be rotatable. Further, a shaft portion 24 is provided at the center position of the gear 14, and both ends of the shaft portion 24 are supported inside the storage case 12, so that the gear 14 is formed to be rotatable.

  Further, a spring material (biasing means) 29 is provided horizontally on the side portions of the gear 13 and the gear 14. That is, one end portion 29 a of the spring material 29 is fixed to the side portion of the gear 13, and the other end portion 29 b is fixed to the side portion of the gear 14. By disposing the spring material 29 in this way, the gear 13 and the gear 14 are always urged in the directions of arrows A and B in FIG.

  One lock rod 15 has a predetermined length, and has an uneven portion 25 that meshes with the gear 13 on the base side. Further, the other lock rod 16 has a predetermined length, and an uneven portion 26 that meshes with the gear 14 is formed on the base side. In other words, one lock rod 15 has the concavo-convex portion 25 meshed with the gear 13, and the other lock rod 16 has the concavo-convex portion 26 meshed with the gear 14, and the rotation of the gear 13 and the gear 14 is transmitted to both. The lock rod 15 and the lock rod 16 are simultaneously moved in the projecting direction (arrow C or D direction) or in the backward direction (the direction opposite to the arrow C or D).

  Further, a step portion 27 a is formed in the middle of the lock rod 15, and this step portion 27 a comes into contact with the edge portion of the insertion hole 21 of the storage case 12 and serves as a stopper. . Similarly, a step portion 27 b is formed in the middle of the lock rod 16, and this step portion 27 b comes into contact with the edge portion of the insertion hole 22 of the storage case 12 and serves as a stopper. Yes.

  Further, the lock bar 15 is inserted through the insertion hole 21 and protrudes outside the storage case 12. Similarly, the lock bar 16 is inserted through the insertion hole 22 and protrudes outside the storage case 12. The lock rod 15 and the lock rod 16 at the portion protruding to the outside are formed in a prismatic or polygonal column shape, and a length adjusting means 28 is provided in the middle thereof.

  The length adjusting means 28 will be described. As shown in FIG. 4, the lock rod 15 (or lock rod 16) is cut in the middle, and a screw 31 having a predetermined length is screwed into one end side 30 thereof. The other end 32 of the lock bar 15 (or lock bar 16) is fixed to the base of the screw 31. Furthermore, a stopper member 33 is provided so as to be movable up and down in close contact with the outer peripheral surface of the lock rod 15 (or lock rod 16). As shown in FIGS. 6 and 7, the stopper member 33 is formed in a prismatic or polygonal column shape that is open at both ends and has a hollow cross section, and serves to regulate the rotation of the lock rod 15 (or the lock rod 16). To fulfill.

The length adjusting means 28 configured as described above appropriately rotates the lock rod 15 (or lock rod 16) on the other end side 32 and screws the screw 31 into the one end side 30 to thereby lock the lock rod 15 (or The length of the lock rod 16) is adjusted. Then, the stopper member 33 is moved at the position of the optimum length and brought into close contact with the outer peripheral surfaces of the one end side 30 and the other end side 32 to restrict the rotation of the lock rod 15 (or the lock rod 16) on the other end side 32. (See FIG. 5). In this way, the length of the lock rod 15 (or lock rod 16) is adjusted.
4 and 5 show the length adjusting means 28 in the lock rod 15, the length adjusting means 28 in the lock rod 16 has a configuration that is vertically symmetrical with that shown in FIGS. Since others are the same, details are omitted.

  The receiving member 17 is formed of a base portion 34 and a concave portion 35, and can be fixed to a predetermined position of a frame portion 36 such as a cupboard by a predetermined means such as screwing or adhesion. And it is comprised so that the front-end | tip part 15a or the front-end | tip part 16a of the lock stick | rod 15 or the lock stick | rod 16 can be fitted in the recessed part 35. FIG.

  The shaft 18 is connected to the shaft portion 24 of the gear 14 and passes through a through-hole 37 provided in the door 20 such as a cupboard so that the tip end portion 18a is positioned outside. Then, by rotating the shaft 18, the shaft portion 24 is rotated, so that the gear 14 can be rotated.

  The handle 19 is attached to the tip 18 a of the shaft 18. Further, the handle 19 is configured so that various shapes or designs can be appropriately selected and attached.

A method of attaching the door lock device 11 as described above to a cupboard or the like will be described.
First, the storage case 12 is fixed to a predetermined position inside the door 20 by a predetermined means such as a screw, and the shaft 18 is passed through a through hole 37 provided in the door 20 in advance. Then, a handle 19 is attached to the tip 18 a of the shaft 18.
Next, the receiving member 17 is fixed to predetermined positions of the upper and lower frame portions 36 by predetermined means such as adhesion.
Further, the lengths of the lock rod 15 and the lock rod 16 are adjusted by the length adjusting means 28, and the lengths are adjusted so that the tip portion 15 a and the tip portion 16 a can be fitted into the recess 35 of the receiving member 17.
In some cases, the support member 38 is attached to the inside of the door 20 to support the lock rod 15 and the lock rod 16 so as to be movable up and down.
Thus, since the locking device 11 is unitized, it can be easily installed on a ready-made cupboard or the like by retrofitting.

Next, the operation of the door lock device 11 will be described. When the door 20 is closed, the gear 13 and the gear 14 are always urged in the directions of arrows A and B in FIG. Then, the rotation of the gear 13 and the gear 14 is transmitted, and the lock rod 15 and the lock rod 16 protrude at the same time (arrow C direction or D direction).
That is, since the lock rod 15 and the lock rod 16 automatically protrude and the tip portion 15a and the tip portion 16a are fitted in the recess 35 of the receiving member 17, the locked state of the door 20 is automatically maintained. .

  When opening the door 20, the handle 19 is gripped and the shaft 18 is rotated, thereby rotating the shaft portion 24 and rotating the gear 14 in the direction opposite to the arrow B in FIG. Simultaneously with the rotation of the gear 14, the gear 13 rotates in the direction opposite to the arrow A. Then, the rotation of the gear 13 and the gear 14 is transmitted, and the lock rod 15 and the lock rod 16 are simultaneously retracted (in the opposite direction to the arrow C or D). At this time, the rear end portion 15b of the lock rod 15 and the rear end portion 16b of the lock rod 16 come into contact with each other to serve as a stopper. Since the distal end portion 15a and the distal end portion 16a are respectively removed from the recesses 35 of the receiving member 17, the door 20 can be opened.

  The door lock device 11 of the present invention is mainly intended for doors with double doors, but is not necessarily limited to this, for example, a single door, a sliding door, or a drawer, You may apply and attach to various opening-and-closing doors, such as a locker door. Moreover, although the locking device 11 shown in FIG. 1 etc. mainly shows the thing for right doors, what is necessary is just to make it a left-right symmetrical structure for this.

It is the front view which fractured | ruptured one part of the locking device 11 of the door which concerns on this invention. It is the side view which fractured | ruptured one part of the state which attached the locking device 11 of the door which concerns on this invention to the door 20. FIG. It is a perspective view of the locking device 11 of the door which concerns on this invention. 4 is a front view of the lock rod 15 for explaining the length adjusting means 28. FIG. 4 is a front view of the lock rod 15 for explaining the length adjusting means 28. FIG. It is the sectional view on the AA line of FIG. 4 is a perspective view of a stopper member 33. FIG. It is a perspective view of the cupboard which attached the locking device concerning a prior art example. It is a disassembled perspective view of the locking device which concerns on a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Locking device 2 Door frame 3 Open / close door 4 Base 5 Lock arm 6 Striker 7 Lock groove member 8 Operation knob 9 Link mechanism 11 Door locking device 12 Storage case 13 Gear 14 Gear 15 Lock rod 15a Tip 15b Rear end 16 Lock Rod 16a tip portion 16b rear end portion 17 receiving member 18 shaft 18a tip portion 19 handle 20 door 21, 22 insertion hole 23, 24 shaft portion 25, 26 uneven portion 27a, 27b step portion 28 length adjusting means 29 spring material (attached) Means)
29a one end part 29b other end part 30 one end side 31 screw 32 other end side 33 stopper member 34 base part 35 recessed part 36 frame part 37 through hole 38 support member

Claims (4)

A storage case of a predetermined size;
A pair of gears provided in the storage case and meshing with each other;
A pair of lock rods that project or retract as the gear rotates;
A receiving member provided for fitting the tip of the lock rod;
A shaft connected to one gear;
A handle attached to the tip of the shaft;
Is configured as one unit,
The door locking device according to claim 1, wherein the pair of gears are provided with urging means so as to rotate in a protruding direction of the lock rod.   The door urging device according to claim 1, wherein the urging means is a spring material horizontally mounted on the side portions of both gears.   The door lock device according to claim 1, wherein the lock bar is provided with a length adjusting means.   2. The door lock device according to claim 1, wherein the handle is configured to be appropriately selected and attached in various shapes or designs.

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