JPH09268828A - Door locking device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] An inexpensive cupboard with a simple mechanism that locks and unlocks all manually without using batteries.
Provide a door locking device for bookcases. A door locking device for a cupboard, bookcase, etc.
It is composed of a push button device attached to the door side and a receiving opening / closing device attached to the furniture body side. The push button device includes a receiving metal fitting that is projected and fixed to the rear surface side of the door, a push button that is projected to the front surface side of the door and is capable of advancing and retracting, and is fixed to this push button and penetrates through the receiving metal fitting. A push rod formed so as to project rearward and a spring member for urging the push button toward the front side of the door are provided. The receiving opening / closing device includes a slide shaft that is engaged with a push rod and is capable of advancing and retreating, an intermediate gear that rotates as the sliding shaft advances and retreats, and opens and closes as the intermediate gear rotates, and A hooking member formed to be detachable and a spring member for urging the slide shaft forward are provided.

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 for cupboards, bookcases and the like.

[0002]

2. Description of the Related Art Generally, a locking device such as a roller catch or a magnetic catch is used as a locking device for a door of a cupboard, a bookcase or the like. This kind of opening prevention metal fitting is usually attached to the top and bottom of the door to prevent it from opening unintentionally, but it is designed to be easily opened by children and the elderly who have weak power, so it can be easily opened by the earthquake. There is a danger that open dishes and books will pop out.
In addition, in order to prevent the furniture from falling over in the event of a large earthquake, L-shaped metal fittings or the like may be used to fix the cupboards and bookcases to the wall. Even if the door is opened easily, it is impossible to avoid the danger of dishes and books popping out.

[0003]

For the purpose of eliminating such a conventional danger, a door lock system has been developed in which the door of furniture is automatically locked when an earthquake is detected. It was published in the Nikkei Sangyo Shimbun, published on 28th March This is a set of metal box and L-shaped metal fittings, the box is attached to the cabinet body, the metal fittings are screwed to the door, and the pendulum built in the box detects an earthquake with seismic intensity 3 to 4, The pin protrudes from the side surface and engages with the metal fitting to lock it, so that unlocking can be done easily by hand. However, in this case the lock is operated with dry batteries,
Since it is not normally energized, it is said that the battery can be replaced once a year. However, there is a problem that the battery runs out when it is important, or the structure is complicated and the price is high. is there.

The present invention provides an inexpensive door lock device for cupboards, bookcases, etc. with a simple mechanism that does not use batteries at all and locks and unlocks manually each time. It tries to solve the problem.

[0005]

As means for technically solving the above-mentioned problems, the present invention is a door locking device for cupboards, bookcases, etc., and a push button device attached to the door side, The push button device comprises a receiving opening / closing device attached to the furniture main body side, and the push button device includes a receiving metal member protruding and fixed to the rear surface side of the door, and a push button provided so as to project forward and backward on the front surface side of the door. And a push rod fixed to the push button and penetrating the receiving fitting so as to project rearward, and a spring member for urging the push button toward the front side of the door, the receiving opening / closing device A slide shaft that is engaged with the push rod and is movable back and forth; an intermediate gear that rotates as the slide shaft advances and retracts; Hooks made possible And ingredients, and summarized in that the slide shaft and a spring member for urging the front. When closing the door, the receiving metal fitting is locked while pushing the hanging metal fitting against the spring member, and when opening the door, push the push button to move the slide shaft backwards against the spring member and push the intermediate gear. It is unlocked by opening the hanging metal fitting.

[0006]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 (a) is a plan sectional view showing a state in which a push button device 2 is attached to a lower portion of a door 1 of furniture, and a cylindrical frame 21 is inserted into the door 1 and formed at the rear part thereof. Both ends of the rear plate 21a are doors 1
The rear surface 1b side is fixed with a screw 22.

The frame 21 has a rear plate 21a to which a receiving member 23 is fixed so as to project rearward, and locking portions 23a are provided at both ends thereof. Further, inside the frame 21, a push button 24 is provided so as to slightly advance toward the front surface 1a of the door 1 so as to be able to move forward and backward, and a push rod 25 formed of iron or the like is provided on a flange 24a at the rear portion of the push button 24. It is fixed. Further, the rear end portion of the push rod 25 penetrates the rear plate 21a and the receiving metal fitting 23 and is slightly projected to the rear surface 1b side of the door 1, and a spiral spring or the like is provided between the flange 24a and the rear plate 21a. The spring member 26 is contracted.

The spring member 26 pushes the push button 24 into the door 1
The flange 24a of the push button 24 is pressed against the stepped portion 21b of the frame 21 by this urging force and acts as a stopper.

FIG. 1B is a plan sectional view showing a receiving opening / closing device 3 which engages with the push button device 2.
Is fixed to the furniture body 4 side such as a cupboard or a bookcase with a screw 32. A slide shaft 33 is attached to the frame 31 such that the slide shaft 33 can move back and forth, and the diameter-reduced tip portion 33a of the frame 31 has a frame 3
The push rod 25 is exposed through a hole 31a formed in the front surface of the first No. 1, and a rack-shaped tooth portion 33b is provided on the outer surface.

Reference numeral 34 designates a pair of intermediate gears, which are vertically supported by the upper and lower plates of the frame 31 as shown in FIG.
The rack shaft teeth 33b of the slide shaft 33 are engaged with the slide shaft 33 and are arranged on both sides of the slide shaft 33. Therefore, as shown in FIG. 6, as the slide shaft 33 moves back and forth,
The intermediate gears 34 are adapted to rotate in opposite directions.

Reference numeral 35 denotes a pair of metal fittings, which is a frame 3
1 is supported by the upper and lower plates and protrudes forward from a square hole 31b (see FIG. 3B) formed in the front plate of the frame 31, and a tooth portion 35a is provided on the outer surface of the substantially semicylindrical rear part. Claws 35 that mesh with the intermediate gears 34 and that are engaged with and disengaged from the locking portions 23a of the receiving metal fittings 23 at the tips.
b are provided facing each other. Therefore,
The pair of metal fittings 35 are opened and closed with the rotation of the intermediate gear 34 due to the forward and backward movement of the slide shaft 33.

Reference numeral 36 denotes a spring member such as a spiral spring, which is contracted between the rear end surface of the slide shaft 33 and the rear plate of the frame 31 and urges the slide shaft 33 forward. That is, the biasing force of the spring member 36 holds the pair of hooks 35 in a closed state.

The door locking device according to the present invention is constructed as described above, and all its operations are performed manually. First,
The operation of locking the door will be described. When the door 1 is closed as shown in FIG. 4 (a), the hanging metal fitting 35 is in the closed state, and as the door is closed, the receiving metal fitting 23 is moved as shown in (b). While touching the metal fitting 35, as shown in (c), the metal fitting 35
When the locking portion 23a passes through the claw portion 35b, the hanging metal fitting 35 closes and the claw portion 35b enters as shown in (d).
Is locked to the locking portion 23a, and the door 1 is locked.

That is, when the door 1 is closed, the receiving fitting 23
4 pushes the hanging metal fitting 35 open to lock it.
When the receiving metal fitting 23 pushes open the hanging metal fitting 35 as shown in (c), the slide shaft 33 is retracted against the spring member 36 via the intermediate gear 34, and then the locking portion 23a of the receiving metal fitting 23 is formed. At the time point when the hook passes through the claw portion 35b of the hanging bracket 35, the slide shaft 33 is advanced by the repulsive force of the spring member 36, and the hanging bracket 35 is closed via the intermediate gear 34.

Thus, when the door 1 is closed, the door 1
Since the receiving metal fitting 23 on the side is completely locked by the hanging metal fitting 35 on the furniture body 4 side, it does not easily unlock even when shaken by a relatively strong earthquake, and tableware stored in the furniture body 4 It is possible to prevent jumping out of books and the like.

Next, the unlocking operation of the door will be described.
When opening the door 1 as shown in FIG.
Is closed and push button 24 before opening door 1.
When pushing with a finger against the spring member 26, the push rod 25 pops out rearward as shown in (b) and the tip portion 33 of the slide shaft 33 is pushed.
Push in a. Then, the slide shaft 33 moves to the spring member 36.
The hook 35b of the hook 35 is disengaged from the locking portion 23a when the hook 35 is opened through the intermediate gear 34 and the push rod 25 is completely pushed in as shown in (c). If the door 1 is pulled a little while keeping that state, it can be completely unlocked like (d).

That is, when the push button 24 of the door 1 is pushed and opened toward the front, the hanging metal fitting 35 is disengaged from the receiving metal fitting 23 and unlocked. When the receiving metal fitting 23 is disengaged from the hanging metal fitting 35, the spring member 36 of the spring member 36 is released. Slide shaft 3 by repulsive force
3 is moved forward, and the metal fitting 35 is passed through the intermediate gear 34.
Back to the closed state. Further, when the finger is released from the push button 24 after opening the door 1 or immediately after unlocking, the push button 24 is pushed forward by the repulsive force of the spring member 26 and returns to the original position together with the push rod 25. Of.

The locking device according to the present invention may be used alone or in combination with the opening stopper fittings for the roller catch and the magnetic catch mounted on the upper and lower sides of the door, and may be retrofitted to existing furniture. It is also possible.

[0019]

As described above, according to the present invention,
In the door lock device of cupboards, bookcases, etc., the battery is not used at all, and the locking and unlocking operations are done manually each time, so the locked state is maintained at the time of earthquake and the tableware and books are prevented from popping out. Therefore, it is possible to secure safety and to provide an excellent effect that it can be provided at a low cost with a simple mechanism.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, in which (a) is a horizontal cross-sectional view of a push button device attached to the lower part of a furniture door, and (b) is a receptacle opening / closing attached to the furniture body side. It is a plane sectional view of an apparatus.

FIG. 2A is a vertical sectional view of a push button device, and FIG. 2B is a vertical sectional view of a receiving opening / closing device.

FIG. 3A is an elevation view of a push button device, and FIG. 3B is an elevation view of a receiving opening / closing device.

[Fig. 4] (a) is a horizontal cross-sectional view of the main part showing a state when the door is closed, (b) is a state diagram when the receiving metal fitting and the hanging metal fitting are in contact, and (c) is when the hanging metal fitting is opened. (D) is a state diagram when the hanging metal fitting is closed and locked.

[FIG. 5] (A) is a horizontal cross-sectional view of the main part showing the state when the door is opened, (B) is a state diagram when pushed by a push rod, and (C) is a state diagram when the hanging metal fitting is opened. , (D) are state diagrams when unlocked.

FIG. 6 is an explanatory diagram showing a rotation direction of a member of the receiving and opening / closing device.

[Explanation of Codes] 1 ... Door 1a ... Front face 1b ... Rear face 2 ... Push button device 21 ... Frame 21a ... Rear plate 21b ... Step 22 ... Screw 23 ... Receiving metal fitting 23a ... Locking part 24 ... Push button 24a ... Flange 25 ... push rod 26 ... spring member 3 ... receiving and opening / closing device 31 ... frame 31a ... hole 31b ... square hole 32 ... screw 33 ... slide shaft 33a ... tip part 33b ... tooth part 34 ... intermediate gear 35 ... hanging metal fitting 35a ... tooth part 35b. … Claws 36… Spring members 4… Furniture body

Claims (1)

[Claims] 1. A door locking device for a cupboard, a bookcase, etc., comprising:
The push button device is attached to the door side, and the receiving opening / closing device is attached to the furniture body side. The push button device is a receiving metal member that is fixed to the rear side of the door and is fixed to the front side of the door. A push button provided so as to move forward and backward, a push rod fixed to the push button and formed so as to project rearward through the receiving metal fitting, and a spring for urging the push button toward the front side of the door. The receiving and opening / closing device includes a slide shaft that is engaged with the push rod and is capable of moving forward and backward, an intermediate gear that rotates as the slide shaft moves forward and backward, and a rotation of the intermediate gear. And a spring member for biasing the slide shaft forward, and a door locking device.