JP2002177063A - Door unlock device for lifting cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an door unlock device for a lifting cabinet which enables the opening of a door by unlocking the door kept locked. SOLUTION: The unlock device is arranged for a lifting cabinet. The cabinet is constituted of an inner cabinet freely liftable within an outer cabinet which has a door opening part arranged open at a lower part of a front plate and a door made to flap vertically on the door opening part. The door is opened or closed with a link arm driven following the inner cabinet and a guide shaft is installed protrudingly on the side of the end part contacting the rear of the door of the link arm. A working plate having a roughly L-shaped guide groove formed therein is mounted on the rear side of the door to let the guide shaft be slidably fitted loosely into the groove. When a force works on the door kept closed in the direction of opening it, the movement of the door in the direction of opening it is locked by engaging the guide shaft with the guide groove.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door unlocking device for a lifting cabinet such as a hanging cabinet installed above a sink or the like.

[0002]

2. Description of the Related Art Conventionally, an outer cabinet having a bottom portion opened, an inner cabinet disposed in the outer cabinet so as to be able to move up and down, and a door opening formed at a lower portion of a front plate of the outer cabinet. ,
A door that can flap up and down via a hinge disposed on the upper side of the door opening, and the door is pressed by a link arm that rotates following the lowering of the inner cabinet. 2. Description of the Related Art An elevating cabinet configured to be opened and closed by its own weight by raising an inner cabinet is known.

However, in the above-described conventional lifting cabinet, one end of a link arm that rotates in accordance with the lifting operation of the inner cabinet is merely in contact with the back side of the door. When the door is closed, the link arm that is rotated by the rise of the inner cabinet does not draw the door in the closing direction, but rather closes by its own weight. May not be able to obtain a sufficient weight (hereinafter, referred to as a door closing pressure) to push the door in the door closing direction and retreat.

In such a case, the above closing pressure is obtained by attaching a weight to the door. However, since the type of weight must be selected depending on the material of the door, such an operation is very complicated. In addition, there is a problem that the work of attaching the weight to the door becomes complicated and the cost increases.

Therefore, the applicant of the present invention has proposed a simple structure for raising and lowering a door in a lifting cabinet which can be securely closed at a low cost regardless of the material of the door. We have proposed a door lock structure for a lifting cabinet that can be reliably prevented by using a lock.

[0006] The door lock structure of this elevating cabinet,
An outer cabinet having a bottom surface opened, an inner cabinet disposed in the outer cabinet so as to be able to move up and down, a door opening formed at a lower portion of a front plate of the outer cabinet, and an upper side of the door opening And a door which can be flap up and down via a hinge disposed on the inner cabinet. The door is opened by being pressed by a link arm which rotates following the lowering of the inner cabinet, and the inner cabinet is opened. As a technical premise, a lifting cabinet configured to close its own weight by the rise of the door is provided with a guide shaft protruding at the end of the link arm that comes into contact with the back of the door, and an operating plate is provided on the back of the door. The operating plate has a guide groove in which the guide shaft is freely slidably fitted, and the inner cabinet is located in the outer cabinet. When the door is closed and the door is in the closed state and a force in the opening direction is applied to the door, the guide shaft engages with the short side groove of the guide groove to lock the movement of the door in the opening direction. It is characterized by having comprised in.

According to the present invention, there is provided a door lock structure for a lifting cabinet proposed by the present applicant, wherein when the door is locked, the locked state is released and the door can be opened. It is an object to provide a door unlocking device.

[0008]

In order to achieve the above object, according to the present invention, there is provided an outer cabinet having an open bottom surface, an inner cabinet disposed in the outer cabinet so as to be able to move up and down, and A door opening formed at the lower part of the front plate of the outer cabinet, and a door that can be vertically flapped via a hinge disposed on an upper side of the door opening, the door comprising an inner cabinet The door is opened by being pressed by a link arm that rotates in accordance with the lowering of the door, and the lift cabinet is configured to close the door under its own weight by raising the inner cabinet. A shaft is protruded, and an operation plate is disposed on the back side of the door. The operation plate has a substantially L-shaped guide groove in which the guide shaft is slidably fitted. When the inner cabinet is housed in the outer cabinet and is in the closed state, and when a force in the opening direction is applied to the door, the guide shaft engages with the short side groove of the guide groove. Assuming that the elevator cabinet configured to lock so as to lock the movement of the door in the opening direction is a technical premise, the outer cabinet is provided with a lock release arm that can swing through a shaft, The unlocking arm is characterized in that the lower end operating piece is moved so that the upper end engages with the guide shaft and presses the guide shaft in the unlocking direction. Things.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the accompanying drawings.

As shown in FIGS. 1 and 2, a vertically moving cabinet K to which a door lock structure according to this embodiment is applied includes a rectangular cylindrical outer cabinet 1 having a bottom portion opened.
An inner cabinet 2 disposed in the outer cabinet 1 so as to be movable up and down;
A door opening 4 opened below the front plate 3 and a door 6 that can be vertically flapped via a pair of hinges 5, 5 disposed on the upper side of the door opening 4. Have been.

As shown in FIG. 1, a driving device for raising and lowering the inner cabinet 2 includes a motor 8 disposed on a top plate 7 of the inner cabinet 2 and a shaft supported by a rotating shaft of the motor 8. Pulley 9, and wires 10, 10, one end of which is wound around the pulley 9 and the other end of which is fixed to the upper inside of the outer cabinet 1.
The inner cabinet 2 is configured to move up and down with respect to the outer cabinet 1 by rotating the motor 8 in the normal and reverse directions. Of course, the operation control of the motor 8 is performed via a switch (not shown) arranged on a wall surface, a sink, or the like where the lifting cabinet K is arranged.

Rollers 11 and 11 are rotatably supported on the center line of both side plates of the inner cabinet 2 while being vertically separated from each other, and vertically inside the both side plates of the outer cabinet 1. Extending guide rails 12,
12 are provided, and the rollers 11, 11 are rolling-guided along the guide rails 12, 12, so that
The inner cabinet 2 is configured to smoothly move up and down with respect to the outer cabinet 1 without rattling.

Further, the door 6 is provided with a link arm 13 which rotates following the lowering of the inner cabinet 2,
Although not shown, hinges 5 and 5 which are configured to be opened by being pressed by 13 and to be closed when the inner cabinet 2 is lifted, and to pivotally open and close the door 6, A spring that urges the door 6 in the closing direction in a normal state is wound.

That is, the link arms 13, 13 are formed in a substantially rectangular shape, and a roller 14 is rotatably supported at the center of the bending, and extends bifurcated from the center of the bending. One of the distal ends is rotatably supported on the inner surface of the side plate of the outer cabinet 1 via a shaft 15, and each of the other distal ends extending in a direction abutting inside the door 6 has a guide shaft. 16 are protrudingly provided.

An operating plate 1 is provided on the back side of the door 6.
7 and 17 are fixed, and the operation plates 17 and 17 have
A guide groove 18 into which the guide shaft 16 is freely slidably fitted is provided.

The guide groove 18 is formed in a substantially L-shape by a long side groove portion 18a and a short side groove portion 18b, and the inner cabinet 2 is housed in the outer cabinet 1 and is in a closed state. When a force in the opening direction is applied to the door 6, the guide shaft 16 is engaged with the short side groove portion 18b of the guide groove 18 to restrict the movement of the door 6 in the opening direction. .

That is, as shown in FIG. 3 (A), when the inner cabinet 2 moves up and down and the link arms 13, 13 rotate to open and close the door 6, as shown in FIG. The guide shaft 16 is shorter than the guide groove 18 within a radius locus range connecting the rotation center axis 15 of the link arms 13 and the guide shaft 16 sliding in the guide groove 18 so as not to cause trouble. Side groove 18
It is formed so that it can slide smoothly without engaging with b.

As shown in FIG. 3B, when the inner cabinet 2 is housed in the outer cabinet 1 and the door 6 is closed, as shown in FIG. The guide shaft 16 is formed so as to engage with the short side groove portion 18b of the guide groove 18 within a radius locus range connecting the hinges 5 and 5 that support the shaft and the guide shaft 16 that slides in the guide groove 18. Even if an earthquake or the like occurs in the above state and a force in the door opening direction acts on the door 6, the guide shaft 16 is engaged with the short side groove portion 18 b of the guide groove 18, and the door 6 is closed. Locked to.

Further, as shown in FIG. 4, a lock release device 20 for releasing the locked state swings a lock release arm 22 via a shaft 21 provided on the inner surface of the side plate of the outer cabinet 1. The unlocking arm 22 is freely rotatably supported, the lower end operating piece 23 of the unlocking arm 22 is disposed to protrude downward from the bottom surface of the outer cabinet 1, and the upper end engaging portion 24 of the unlocking device 20 is It is formed in a semicircular shape so as to be engageable with the guide shaft 16.

Therefore, in the unlocking device 20, when the lower end operating piece 23 is pressed in the depth direction, the upper end engaging portion 24 engages with the guide shaft 16 with the shaft 21 as a fulcrum. Pivots in the direction to engage with the guide shaft 16,
Further, when the lower end operation piece 23 is pressed, the upper end engaging portion 24 presses the guide shaft 16 in the unlocking direction, and the guide shaft 16 is engaged with the short side portion 18 b of the guide groove 18. Since the state can be released, the door 6 can be easily opened later by manually lifting the door 6.

On the other hand, on both side plates of the inner cabinet 2, a substantially L-shaped guide 1 against which the roller 14 abuts is provided.
9, 19 are provided.

The guides 19, 19, as shown in FIG.
The roller 14 is positioned below the horizontal side 19c when the door is closed, and the roller 14 is tilted when the inner cabinet 2 is lowered. The vertical side 19a, the inclined side 19b, and the horizontal side 19c are formed. Since the guide shaft 16 rolls along the side portion 19b and pushes the guide shaft 16 toward the opening direction, the guide shaft 16 is moved from the short side groove portion 18b of the guide groove 18 formed in the operation plates 17, 17 of the door 6 above. After gradually raising the door 6 in the horizontal direction while sliding along the long side groove 18a, when the roller 14 reaches the position of the vertical side 19a and the roller 14 is at the position of the vertical side 19a, The guide shaft 16 is pressed so as to protrude most forward of the cabinet, and holds the door 6 in a substantially horizontal state.

Of course, when the inner cabinet 2 is raised, the roller 14 is guided in a procedure opposite to the above procedure, so that the door 6 is automatically closed from the horizontal open state to the closed state. Can be

[0024]

The lifting cabinet according to the present invention is constructed as described above, so that when the door is locked, the locked state can be released and the door can be opened. An excellent effect is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view, partially cut away, showing a configuration of a lifting cabinet to which an unlocking device according to an embodiment of the present invention is applied.

FIG. 2 is an explanatory sectional view of the lifting cabinet.

FIG. 3A is an explanatory view showing a movement trajectory between a rotation center axis of a link arm for opening and closing a door of the lifting cabinet, a guide shaft of the link arm, and a guide groove of the door, and FIG. FIG. 6 is an explanatory diagram of a movement locus relationship between the rotation shaft of FIG.

FIG. 4 is an explanatory diagram showing a configuration example of a lock release device provided in the lifting cabinet.

[Explanation of symbols]

 K Elevating cabinet 1 Outer cabinet 2 Inner cabinet 3 Front panel 4 Opening 5 Hinge 6 Door 13 Link arm 14 Roller 15 Shaft 16 Guide shaft 17 Operating plate 18 Guide groove 18a Long side groove 18b Short side groove 20 Lock release device 21 Shaft 22 Lock release arm 23 Lower end operation piece of lock release arm 24 Upper end engagement part of lock release arm

Claims (1)

[Claims] 1. An outer cabinet having a bottom surface opened, an inner cabinet disposed in the outer cabinet so as to be able to move up and down, a door opening formed at a lower portion of a front plate of the outer cabinet, and the door opening. A door that can be vertically flapped via a hinge disposed on the upper side of the unit, and the door is opened by being pressed by a link arm that rotates following the lowering of the inner cabinet. The door is configured to be closed by its own weight by raising the inner cabinet, a guide shaft is protruded at the end of the link arm that comes into contact with the back surface of the door, and an operation plate is provided on the back surface of the door. A guide groove in which the guide shaft is freely slidably fitted is formed in the plate in a substantially L shape.
When the inner cabinet is housed in the outer cabinet and is in the closed state, and when an opening force is applied to the door, the guide shaft engages with the short side groove of the guide groove to open the door. In the elevating cabinet configured to lock the movement in the direction, a lock release arm that is swingable via a shaft is disposed in the outer cabinet, and the lock release arm has a lower end operating piece. A door unlocking device for an elevator cabinet, wherein the upper end is engaged with the guide shaft and the guide shaft is pressed in the unlocking direction by moving the portion.