JPH09322833A - Latch device for furniture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to release a latch claw of a latch axis from a hook part of a furniture body even if a rotatable grip member, arranged on a door, is rotated in either direction by a simple constitution. SOLUTION: A free end of an operating arm 19, journaled to rotate around a journal 20 of a door 2, is contacted to a lever 21 arranged, as an eccentric part, on a latch axis 4 having a latch claw 7 fixed at the end. Meanwhile, between the latch axis 4 and the operating arm 19, a rotatable grip member 14 is arranged around an axis 16 which is parallel with the journal 20. A pair of pressure applying parts 22 and 23, which selectively contact to a near and far ends of the operating arm 19, are provided, between the axis 16, on the grip member 14. When the grip member rotates either in right or left direction, the operating arm 19 is rotated counterclockwise as shown on the illustration, and the latch axis 4 is rotated clockwise on the illustration, thereby, the latch claw 7 is off from a hook part 8 to release the latch.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a latch device provided on a movable body such as a door or a drawer that can be opened and closed with respect to a furniture body such as a locker or a cabinet.
The present invention relates to a structure in which a handle member provided on the movable body can be rotated in any direction around its pivot line, and the latch device can be released as the handle is rotated.

[0002]

2. Description of the Related Art No matter whether the rotatable handle member provided on the end plate of a drawer is rotated up or down, the latch device that is biased by the furniture body is released. 63-96177, Japanese Utility Model Publication 63-132071.
Japanese Patent Publication No. 6-3923, Japanese Patent Laid-Open Publication No. 7-798.
No. 27 publication.

[0003]

However, in these structures, the interlocking mechanism for transmitting the turning force of the handle member to the latch device is considerably complicated, so that there is a problem that the manufacturing cost becomes high. The present invention has been made to solve this problem.

[0004]

To achieve the above object, a latch device in furniture according to the present invention is provided in a movable body such as a door or a drawer that can be opened and closed with respect to a furniture body, and an engaging portion of the furniture body. A latch shaft having a latch claw that engages and disengages is disposed so as to be rotatable around its axis and biased so that the latch claw engages with the engaging portion, and the base end is rotatable with respect to the moving body. The free end side of the actuating arm pivotally attached is brought into contact with an eccentric portion provided on the latch shaft, while the free end side is provided between the latch shaft and the actuating arm around a pivot axis parallel to the pivot axis of the actuating arm. A rotatable grip member is disposed, and the grip member is provided with a pair of pressing portions that selectively abut on the actuating arm on the side near the base end of the actuating arm and on the side far from the base end of the actuating arm. It is a thing.

[0005]

Next, embodiments of the present invention will be described. FIG. 1 is a perspective view in which a pair of left and right doors 2 and 2 are mounted in a double door type through respective hinges 3 and 3 to a front opening of a furniture main body 1 made of a metal plate of a cabinet. On the free end side of the inner surface of each door 2 as a moving body, the latch plates 4 and 4 having a vertically long longitudinal cross section and a rectangular cross section can be rotated around their longitudinal axes so that the bearing plates 5 and the doors in the middle thereof can be rotated. 2 is pivotally supported by the bearing members 6 at the upper and lower ends (only the lower end side is shown in FIG. 2).

The upper and lower ends of each of the latch shafts 4 are
A latch claw 7 (only one of which is shown in FIG. 3) that engages and disengages with a hole-shaped engaging portion 8 formed or cut out on the front opening side of the furniture body 1 is fitted and fixed, and Bracket 10 fixed with screws or the like in the middle and reinforcing plate 12 on the inner surface of door 2.
In the biasing spring 9 mounted between the locking portion 11 and
The latch claw 7 is biased in a direction in which the latch claw 7 engages with the engaging portion 8.

Next, a first embodiment of the latch device will be described with reference to FIGS. A handle in which a synthetic resin pull hole edge member 13 is fitted along a hole formed in the front surface of each door 2 and the inside diameter of the pull hole hole edge member 13 is exposed from the inner surface (back surface) side of each door 2. The member 14 is formed in a hollow shape so that the front surface of the member 14 is open and a person's finger can enter therein, and the reinforcing brackets 15 and 1 fixed to the upper and lower end surfaces of the handle member 14.
The pivot shafts 16 and 16 (only the pivot shaft at the lower end is shown in FIG. 2) protruding to 5 are pivotally mounted on the bracket 17 of the reinforcing plate 12.

A bracket 18 cut and raised in the vertical plate 12a of the reinforcing plate 12 on the inner surface of the door 2 has a base end of a plate-shaped actuating arm 19 rotatably pivoted by a pivot shaft 20.
The free end side of the actuating arm 19 is brought into contact with the back surface of the tip end side (free end side) of a lever 21 such as a plate-like eccentric portion provided in the middle of the latch shaft 4. The axes of the latch shaft 4, the pivot shaft 20, and the pivot shaft 16 of the handle member 14 are set to be parallel to each other.

The reinforcing brackets 15 and 15 fixed to the upper end surface of the handle member 14 are located on the side near the base end (pivot shaft 20) of the operating arm 19 and on the side far from the base end of the actuating arm 19 with the shaft 16 interposed therebetween. A pair of pressing portions 22 and 23 that selectively come into contact with the back surface of the operating arm 19 are provided by bending a metal plate or the like.
In this case, it is preferable that the tips of the pressing portions 22 and 23 are formed in a convex curved shape such as a semicircular shape.

According to this structure, when each door 2 is closed so as to cover the opening of the furniture main body 1, the latch claw 7 kicks into the engaging portion 8 against the force of the biasing spring 9. . Then, the operator's finger is inserted into the handle member 14 at the inner diameter position of the handle hole edge member 13 in the right door 2, and the front side of the handle member 14 is rotated, for example, in the arrow A direction (clockwise direction) of FIG. When moved, the handle member 14 and the pair of pressing portions 22, 23
Rotates clockwise about the pivot 16 (see the solid line in FIG. 4), and the pressing portion 23 of the operating arm 19 near the pivot 20 presses the back surface of the operating arm 19 in the middle of the longitudinal direction. Then, the free end side of the operating arm 19 pushes and rotates the lever 21 clockwise, and the latch shaft 4 rotates clockwise in FIG. 4 against the biasing force of the biasing spring 9. Is disengaged from the engaging portion 8 and is released from the latch.

In FIG. 4, arrow B direction (counterclockwise direction)
When the front side of the handle member 14 is rotated, the pressing portion 22 of the operating arm 19 on the side farther from the pivot shaft 20 presses the rear surface of the operating arm 19 in the longitudinal direction, and the operating arm 1
Since the free end side of 9 also pushes and rotates the lever 21 in the clockwise direction, the latch claw 7 is disengaged from the engaging portion 8 and unlatched in the same manner as described above.

For the left door 2, the handle member 14 is moved to the left and right (in the direction of arrow A or in the direction of arrow B) in substantially the same manner as described above.
No matter which direction the latch claw 7 is rotated,
It can be rotated so as to come off. As shown in FIGS. 2 and 5, when the lock bolt 25 of the lock 24 for locking / unlocking with the key is projected, the tip of the lock bolt 25 is in the middle of the latch shaft 4. The latch shaft 4 can be locked so as not to rotate in the releasing direction by contacting the protruding restricting piece 26, and when the lock bolt 25 is held in the retracted state,
The latch shaft 4 can be rotated in both locking and unlocking directions. Further, as shown by the chain double-dashed lines in FIGS. 3 and 5, the cover member 27 is provided at the location of the reinforcing plate 12 so that the operating parts such as the handle member 14 and the lock 24 are not exposed on the back surface (inner surface side) of the door 2. Attach to.

In the second embodiment shown in FIG. 6, the reinforcing plate 1
The pivot 16a, which is inserted into a bracket (not shown) projecting from 2, is fixed to a vertically elongated recess 30 formed on the back side of the handle member 14 (the fixing means may be welding, bonding, screwing, or the like. In this case, the work of mounting the handle member 14 becomes easier than in the first embodiment. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and the description of the configuration and the operation / effect are omitted.

FIG. 7 shows a third embodiment in which the latch device of the present invention is applied to a drawer of a cabinet, and an end plate 40 of the drawer.
A hollow handle member 42 having a front opening is made to face the rear side of the end plate 40 into the pull hole 41 formed in the front side of the handle plate 42, and the handle member 42 is rotatably mounted around horizontal pivot shafts 43 at both left and right ends thereof. On the back side of the end plate 40, a vertically long and vertically operating arm 4 is provided.
4 is arranged on the back side of the handle member 42, and the operating arm 4
4 is configured to be rotatable around a horizontal pivot shaft 45 at its base end, and a pair of upper and lower pressing portions 46, 47 projecting rearward from the rear surface of the handle member 42 sandwich the pivot shaft 43. The side closer to the base end (pivotally attached shaft 45) of the operating arm 44 and the side farther from the operating arm 44 are selectively brought into contact with the upper and lower intermediate portions of the operating arm 44. On the other hand, on the rear surface side of the end plate 40 and below the handle member 42, a latch claw 48 having a conventionally known structure is provided.
The upper and lower longitudinal latch shafts 49 fixed to the base ends of the latch claws 48 are fixed via a latch case 50. The latch claw 48 is constantly biased by a spring so as to engage with an engaging portion (not shown) provided on the inner surface of the cabinet body. Further, the back end of the free end side (lower end side) of the operating arm 44 is brought into contact with the free end side of the eccentric portion 49a obtained by bending the upper end of the latch shaft 49 in the horizontal direction.

With this structure, when the handle member 42 is rotated in the direction of arrow C in FIG. 7, the upper pressing portion 46 separates the free end side of the operating arm 44 from the rear surface of the end plate 40 (direction of arrow E). ), The eccentric portion 49a of the latch shaft 49 is rotated on the free end side of the operating arm 44, so that the latch claw 48 is disengaged from the engagement of the cabinet body. When the handle member 42 is rotated in the direction of the arrow D in FIG. 7, the lower pressing portion 47 presses and rotates the free end side of the operating arm 44 in the direction away from the rear surface of the end plate 40. The claw 48 can be moved in the disengagement direction.

As a modified example of this embodiment, a pair of upper and lower pressing portions 46 and 47 are provided on the end plate 4 at the side end of the handle member 44.
0 in the direction of approaching the back surface,
6, 47 and the rear surface of the actuating arm 44 are selectively brought into contact with each other, the free end side of the actuating arm 44 approaches the rear surface of the end plate 40 regardless of whether the handle member 44 is rotated in the up or down direction. The latch claw 48 is rotated in the disengagement direction in accordance with this movement.
The eccentric portion 49a and the eccentric portion 49a may be brought into contact with the free end side of the operating arm 44.

[0017]

As described above, the latch device for furniture according to the present invention is a latch that engages and disengages with a moving body such as a door or a drawer that can be opened and closed with respect to the furniture body. A latch shaft provided with a pawl is disposed so as to be rotatable around its axis and biased so that the latch pawl engages with an engaging portion, and a base end of the movable body is pivotally mounted so as to be rotatable. The free end side of the actuating arm is brought into contact with an eccentric portion provided on the latch shaft, while being rotatable between the latch shaft and the actuating arm around a pivot axis parallel to the pivot axis of the actuating arm. A handle member is arranged, and the handle member is provided with a pair of pressing portions that selectively abut the operating arm on the side near the base end and the side far from the base end of the operating arm with the pivot shaft interposed therebetween.

According to this structure, only by providing the pair of pressing portions that rotate integrally with the handle member that rotates about the pivot and the actuating arm that rotates only on one side, it is known from the prior art. Since the latch shaft can be rotated in the disengagement direction via the eccentric part of the latch shaft, the structure is extremely simple, which is a remarkable effect.

[Brief description of drawings]

FIG. 1 is a perspective view of a furniture body and a door.

FIG. 2 is a diagram of a main part of the first embodiment of the latch device viewed from the back side of the right door.

FIG. 3 is a sectional view taken along line III-III of FIG. 2;

FIG. 4 is an operation explanatory view.

FIG. 5 is a sectional view taken along line VV of FIG. 2;

FIG. 6 is a partially cutaway sectional view of a second embodiment.

FIG. 7 is a side sectional view of a third embodiment.

[Explanation of symbols]

 1 Furniture Main Body 2 Door 4 Latch Shaft 7 Latch Claw 8 Engagement Part 14 Handle Member 16 Axis 19 Actuating Arm 20 Pivoting Axis 21 Lever 22, 23 Pressing Part

Claims (1)

[Claims] 1. A latch shaft provided with a movable body such as a door or a drawer that can be opened and closed with respect to a furniture main body, the latch shaft having a latch claw that engages and disengages with an engaging portion of the furniture main body, and is rotatable around its axis. Arranged so that the latch claw is biased so as to engage with the engaging portion,
The free end side of the actuating arm whose base end is rotatably pivotally attached to the movable body is brought into contact with the eccentric portion provided on the latch shaft, while the actuating arm is provided between the latch shaft and the actuating arm. A handle member rotatable around a pivot parallel to the pivot axis of the arm is arranged, and the handle member is selected between the side closer to the base end of the actuation arm and the side farther from the actuating arm with the pivot axis interposed therebetween. A latch device for furniture such as cabinets, which is provided with a pair of pressing portions that abut against each other.