JPH09125787A - Latch device for door of furniture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily fit a latch device to a door without damaging the appearance of the door, and to improve the operability. SOLUTION: A handle 5, which is provided for projection in a front surface of a door 3, is pinched by one hand at both sides thereof, then, a front part of a lever 22, which forms one side surface of the handle 5, is pushed, and a rear part of the lever 22 turns a latch rod 11 so as to release the engagement of a latch claw with an engagement part of a furniture main body. Operability for opening and closing the door 3 is thereby improved. Since a pull hole for operating the lever is unnecessary, the handle 5 is miniaturized, and the handle 5 can be easily fitted without damaging the appearance of the door.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door latch device for furniture such as a locker.

[0002]

2. Description of the Related Art Conventionally, a latch device for this type of door has been disclosed in, for example, Japanese Utility Model Publication No. 62-27649 and Japanese Utility Model Publication No. 1-18772.

The latch device disclosed in Japanese Utility Model Publication No. 62-27649 will be described with reference to FIG. 6, in which 01 is a door of a metal locker, a clothes storage or the like, and a pull handle having a pull handle hole 02 opening to the front. The frame 03 is attached near the end of the door 01. In the pull tab frame 03, a pull tab member 05 having a base end fixed to a rotary shaft 04 is provided. By turning the pull tab member 05, the pull tab member 05 is attached to the upper and lower ends of the pull tab frame 03. A latch rod 06 having a latch claw (not shown) that can be engaged and disengaged is rotated via a lever 07.

[0004]

However, the pulling member 05 of such a latch device has the door 0 in the normal position.
In addition to being provided in parallel with No. 4, it is necessary to further provide a pull hole 02 into which the user's hand is inserted at the side of the tip end of the pull member 05, so that it is necessary to provide the door 04 with a wide opening.

Further, since the structure is complicated, it is particularly difficult to attach it to a door such as a wooden locker or a clothes storage, and a pull frame made of synthetic resin or the like is exposed on the front surface of the door over a wide range, which impairs the appearance. There was such a problem.

The present invention has been made in view of the above problems, and an object thereof is to provide a door latching device for furniture which can be easily attached without impairing the aesthetic appearance of the door and which has good operability. It is what

[0007]

In order to achieve the above-mentioned object, a door latch device in furniture according to the present invention comprises a latch rod having latch claws which can engage with an engaging portion of a furniture body at both ends. A handle, which is pivotally attached to the main body of the furniture in a pivotally biased state in the engaging direction, is pivotally supported on the back surface of the door, and a handle having a recess on at least one side surface is provided at a predetermined position on the surface of the door. A through hole is provided which is projected and communicates with the recess of the handle and penetrates through the rear surface of the door, and a lever linked to rotate the latch rod is pivotally mounted in the through hole in the front-back direction. At least the front portion of the lever extends from the front surface of the door to the inside of the recess of the handle, and constitutes a part of the side surface of the handle. According to this feature, by sandwiching both side surfaces of the handle protruding from the front surface of the door with one hand, the front portion of the lever constituting one side surface of the handle is pressed and the rear portion of the lever rotates the latch rod. As a result, the engagement between the latch claw and the engagement portion of the furniture main body is released, so that the operability of opening and closing the door is improved. Further, since it is unnecessary to provide a pull hole for operating the lever and the handle is made compact, the door can be easily attached without spoiling the aesthetic appearance of the door.

The door latch device in the furniture of the present invention is
Projecting portions as shafts are projected to face the upper and lower pieces sandwiching the through hole at the rear part of the handle, and an engaging piece elastically deformed in the vertical direction is formed above and below the intermediate portion of the lever. It is preferable that the lever is pivotally supported by engaging the engaging holes provided in each of the above-mentioned projections with each other. By doing so, the lever can be easily attached to the handle without using a tool.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. First, FIG. 1 shows a rocker 1 as an embodiment of the present invention, and the front surface of the rocker 1 is shown. A door 3 is attached to the opening 2 so as to be rotatable forward. When the door 3 is closed, the upper and lower ends of the back surface of the door 3 are brought into contact with a step 4 provided in the opening 2. The upper and lower steps 4 are described later. An engaging piece serving as an engaging portion that can be engaged with the latch claw is provided.

Numeral 5 is a handle which is provided at the front end of the door 3 so as to project toward the front, and the lower portion 6 is a key hole for locking.

As shown in FIGS. 2 to 4, a mounting plate 7 is mounted on the back surface of the door 3 via a screw 8, and between upper and lower support pieces 9 and 9 projecting rearward from the mounting plate 7. A rotary cylinder 10 is pivotally supported, and a latch rod 11 penetrates the rotary cylinder 10 and the support pieces 9, 9. The latch rod 11 is fitted to the rotary cylinder 10 so as not to rotate relatively.

The latch rod 11 extends in the vertical direction of the back surface of the door 4, and latch claws 12 are fixed to both upper and lower ends thereof. As shown in FIG. 5 in particular, the latch claw 12 can be inserted into a window portion 4 a formed on the front surface of a step portion 4 provided in the opening 2 of the rocker 1, and the latch claw 12 can be inserted into the step portion 4. It is provided so as to be engageable with and disengageable from the engagement piece 13 as a fixed engagement portion. The vicinity of the upper and lower ends of the latch rod 11 is rotatably supported by a support member 14.

From the rotary cylinder 10, a stopper piece 15 for restricting the range of rotation of the rotary cylinder 10, a locking piece 18 locked by a slide member 17 of a lock device 16, and a fixed piece at one end. A fixing piece 21 that locks the other end of the spring 20 that is locked to 19 and a pressing piece 23 that is pressed by the tip end portion of a lever 22 described below are provided so as to project.

The locking device 16 has a mechanism in which a slide member 17 slides in the vertical direction by inserting a key (not shown) into the keyhole 6 in FIG. 1 and rotating the key. The description is omitted here. Also, 2
Reference numeral 4 is a cover body that covers these mechanisms.

Next, as shown in FIGS. 3 (a) and 3 (b),
Through hole 26 penetrating into the recess 25 formed on the back surface of the door 3
The mounting portion 5a of the handle 5 is fitted into the through hole 26 as shown in FIG. 4, and the mounting plate 25a inserted into the recess 25 from the back side of the door 3 is provided with a screw. It is fixed via 27. Further, a protrusion 28 is provided inside the upper and lower mounting portions 5a.

The lever 22 is inserted into the through hole 26 of the door 3, and the protruding portion 28 of the handle 5 is inserted through the hole 30 of the locking piece 29 whose middle portion is elastically deformable at the upper and lower ends. Is pivotally attached to. This pivoting work is performed by pressing the lever 22 into the through hole 26 from behind the door 3 so that the tip of the locking piece 29 rides on the protrusion 28 and then further presses the hole 30 and the protrusion 28. Is achieved by fitting. The pressing portion 22a on the front side of the lever 22 is projectingly provided in front of the door 3 so as to face the recess 31 formed on one side surface of the handle 5, and the rear side is extended rearward from the hole 7a of the mounting plate 7, The tip portion 22b is in contact with the pressing piece 23 of the rotating cylinder 10.

Next, the operation of the latch device constructed as described above will be described with reference to the drawings. First, in a normal state, the lever 22 holds the fixed piece of the rotary cylinder 10 as shown in FIG. Since 21 is biased in the pulling direction of the spring 20 by a slight amount, the tip portion 22b is pressed by the pressing piece 23, and the front surface of the pressing portion 22a is fixed in a state of slightly protruding from the concave portion 31 of the handle 5. Here, the door 3 is in a closed state, and the latch claw 12 has the engagement piece 13 in the step portion 4.
(See FIG. 5).

To open the door 3, first, the handle 5
Between both sides with one hand. Then, as shown in FIG. 3 (b), the pressing portion 22a is pressed in the direction of the arrow in the figure, and the distal end portion 22b of the lever 22 is rotated around the pivot portion in a direction opposite to the pressing portion 22a. Then, the pressing piece 23 is pressed in the direction of the arrow, and the rotating cylinder 10 rotates.

By the rotation of the rotation cylinder 10, the latch rod 1
1 is similarly rotated, so that the latch claw 12 is
(See FIG. 5), the door 3 can be opened.
The rotation range of the rotation cylinder 10 at this time is determined by the stopper piece 15
Is restricted by contact with the mounting plate 7. Then, by removing the thumb from the pressing portion 22a, the rotating cylinder 10 is reversely rotated by the tensile force of the spring 20, so that
The lever 22 automatically returns to a normal state (see FIG. 3A).

Therefore, by sandwiching both side surfaces of the handle 5 projecting in front of the door 3 with one hand, the pressing portion 22a of the lever 22 provided in the recess 31 formed on one side surface of the handle 5 is pressed.
Since the latch claw 12 and the engaging piece 13 are released from each other, the door 3 can be opened, and the latch claw 12 is released by stopping the pressing of the pressing portion 22a. Automatically returns to the original state. Note that the latch claw 12 is automatically engaged with the engagement piece 13 simply by closing the door 3 without using the handle 5.

As described above, in the door latch device of the present invention, the lever which constitutes one side surface of the handle 3 is formed by sandwiching both side surfaces of the handle 5 vertically projecting from the front surface of the door 3 with one hand. Since the pressing portion 22a of 22 is pressed and the engagement between the latch claw 12 and the engaging piece 13 is released, the opening / closing operation of the door 3 can be performed easily and surely. .

Since the handle 5 and the lever 22 can be attached by providing the door 3 with a small through hole, the latch device can be easily attached to a wooden locker or furniture.

Further, since it is not necessary to provide a pull hole or the like for operating the lever 22, the handle 5 and the like are made compact, and the appearance of the door 3 is not spoiled.

The embodiments of the present invention have been described with reference to the drawings. However, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention. Included in the invention.

[0025]

According to the present invention, the following effects can be obtained.

(A) According to the first aspect of the present invention, the front portion of the lever constituting one side surface of the handle is pressed by sandwiching both side surfaces of the handle protruding from the front surface of the door with one hand. The rear portion of the lever rotates the latch rod so that the engagement between the latch claw and the engaging portion of the furniture main body is released, so that the operability of opening and closing the door is improved. Further, since it is unnecessary to provide a pull hole for operating the lever and the handle is made compact, the door can be easily attached without spoiling the aesthetic appearance of the door.

(B) According to the second aspect of the invention, the lever can be easily attached to the handle without using a tool.

[0028]

[Brief description of the drawings]

FIG. 1 is a perspective view of furniture provided with a door latch device according to a first embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of a back surface of the door of FIG.

3A is a cross-sectional view taken along a line II in FIG. 2, and FIG. 3B is a cross-sectional view showing an operation corresponding to FIG.

FIG. 4 is a sectional view taken along line II-II of FIG.

FIG. 5 is an enlarged view of a main part of FIG. 1;

FIG. 6 is a cross-sectional view showing a conventional door latch device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 rocker 2 opening part 3 door 4 step part 4a window part 5 handle 5a mounting part 6 key hole 7 mounting plate 7a hole 8 screw 9 support piece 10 rotating cylinder 11 latch rod 12 latch claw 13 engaging piece (engaging part) 14 Support member 15 Stopper piece 16 Lock device 17 Sliding member 18 Locking piece 19, 21 Fixing piece 20 Spring 22 Lever 22a Pressing part 22b Tip part 23 Pressing piece 24 Cover body 25 Recess 25a Mounting plate 26 Through hole 27 Screw 28 Projecting part 29 Locking piece 30 Hole 31 Recess

Claims (2)

[Claims] 1. A latching rod having latching claws at both ends which can be engaged with an engaging portion of a furniture main body, is biased to rotate in the engaging direction on a back surface of a door pivotally attached to the furniture main body so as to be freely opened and closed. The handle is pivotally supported in a state, and a handle having a recess formed on at least one side surface is provided at a predetermined position on the front surface of the door, and a through hole communicating with the recess of the handle and penetrating the back surface of the door is provided. At the same time, a lever linked to give rotation to the latch rod is pivotally mounted in the through hole in the front-rear direction, and at least the front portion of the lever extends from the front surface of the door into the recess of the handle. A latch device for a door in furniture, characterized in that it constitutes a part of a side surface of the handle. 2. A locking piece that is elastically deformable in the vertical direction is formed above and below the intermediate portion of the lever, while projecting projections as shafts are respectively opposed to the upper and lower pieces that sandwich the through hole in the rear portion of the handle. 2. The door latching device for furniture according to claim 1, wherein the lever is pivotally supported by engaging the protrusions with engaging holes provided in the locking pieces, respectively.