JP3311220B2 - Door latch device in furniture - Google Patents

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, this type of door latch device is disclosed, for example, in Japanese Utility Model Publication No. 62-27649 and Japanese Utility Model Publication No. 1-187772.

The latch device disclosed in Japanese Utility Model Publication No. 62-27649 will be described with reference to FIG. 6. Reference numeral 01 denotes a metal locker or a door of a clothes storage, and the like. A frame 03 is mounted near the end of the door 01. A handle member 05 whose base end is fixed to a rotating shaft 04 is provided in the handle frame 03, and by rotating the handle member 05, the upper and lower ends are connected to the engaging portions of the furniture body. A latch rod 06 having a latch claw (not shown) that can be engaged and disengaged is turned via a lever 07.

[0004]

However, the pull member 05 of such a latch device is provided with the door 0 in the normal position.
In addition to being provided in parallel with the puller 4, the puller hole 05 for inserting the user's hand must be provided on the side of the tip of the puller member 05.

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

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and an object of the present invention is to provide a door latch device for furniture with good operability, which can be easily attached without impairing the beauty of the door. It is assumed that.

[0007]

In order to achieve the above-mentioned object, a door latch device for furniture according to the present invention comprises a latch rod having latch claws at both ends which can be engaged with engaging portions of a furniture main body. A back surface of a door pivotally attached to the furniture body is pivotally supported in a direction of engagement with a pressing piece protruding from a turning cylinder of the latch rod in an engaging direction, and a predetermined surface of the door is provided. At the point, a handle with a recess formed on one side faces forward
Projecting Te, a through hole is provided that penetrates the back surface of the door communicates with the recess of the hand該把, the direction abuts lever back and forth the pushing piece to the through-hole impart rotation to the latch rod At least a front portion of the lever extends from the front surface of the door into the recess of the handle, and the front portion of the lever is a pressing portion that forms a part of a side surface of the handle.
In the state where the latch claw is engaged with the engaging portion, the pressing portion is
Is fixed so that the front surface of the handle slightly protrudes from the recess of the handle ,
In addition, one side of both sides of the handle vertically protruding from the front of the door
Lever constituting one side of the handle by being sandwiched between
Is pressed, and the engagement between the latch claw and the engaging part is released.
As a further configuration, as a further configuration, a projection as a shaft is protruded opposite to the upper and lower pieces sandwiching the through hole in the rear portion of the handle, and the upper and lower portions are vertically moved above and below the intermediate portion of the lever. A locking piece elastically deformed in the direction is formed, and by inserting the lever from the rear of the door, the pressing piece and the tip of the lever come into contact with each other, and engagement holes provided in the locking piece are provided. Are respectively engaged with the protrusions to rotatably support the lever. According to this feature, by sandwiching both sides of the handle protruding from the front of the door with one hand, the front part of the lever constituting one side of the handle is pressed, and the rear part of the lever rotates the latch rod. Since the engagement between the latch claw and the engaging portion of the furniture main body is released, the operability of opening and closing the door is improved. Also, there is no need to provide a handle hole for lever operation, etc., and the handle is made compact, so that the appearance of the door is not impaired,
Not only can it be easily mounted, but also the lever can be easily mounted on the handle without using any tools.

[0008]

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. First, FIG. 1 shows a locker 1 as an embodiment of the present invention. 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 its rear surface are brought into contact with a step 4 provided in the opening 2. An engaging piece is provided as an engaging portion capable of engaging with a latch claw to be engaged.

Reference numeral 5 denotes a handle protruding forward at the front end of the door 3, and a lower part 6 is a lock keyhole.

As shown in FIGS. 2 to 4, a mounting plate 7 is mounted on the back surface of the door 3 via screws 8, and is provided between upper and lower support pieces 9 projecting rearward from the mounting plate 7. A pivoting cylinder 10 is pivotally supported, and a latching rod 11 penetrates the rotating cylinder 10 and the support pieces 9 and 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 on the rear surface of the door 4, and latch claws 12 are fixed to both upper and lower ends thereof. As shown in FIG. 5, the latch claw 12 can be inserted into a window 4 a formed on the front surface of the step 4 provided in the opening 2 of the locker 1. It is provided detachably with respect to the engagement piece 13 as the fixed engagement portion. The vicinity of the upper and lower ends of the latch rod 11 is rotatably supported by a support member 14.

[0013] From the rotating cylinder 10, a stopper piece 15 for regulating the rotation range of the rotating cylinder 10, a locking piece 18 locked by a slide member 17 of a locking device 16, and a fixed piece at one end. A fixing piece 21 for locking the other end of the spring 20 locked to 19, and a pressing piece 23 pressed by a distal end of a lever 22, which will be described later, are protrudingly provided.

The lock device 16 has a mechanism in which a key (not shown) is inserted into the keyhole 6 in FIG. 1 and turned to cause the slide member 17 to slide up and down. The description is omitted here. Also, 2
Reference numeral 4 denotes a cover body that covers these mechanisms.

Next, as shown in FIGS. 3A and 3B,
Through hole 26 penetrating through recess 25 formed on the back surface of door 3
The mounting portion 5a of the handle 5 is fitted into the through hole 26 as shown in FIG. 4, and a screw is inserted into the mounting plate 25a inserted into the concave portion 25 from the back side of the door 3. 27 is fixed. 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 a substantially middle portion of the lever 22 passes through a hole 30 of a locking piece 29 formed at the upper and lower ends thereof so as to be elastically deformable. Is pivoted 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 in front of the lever 22 is provided to protrude forward of the door 3 so as to face a recess 31 formed on one side surface of the handle 5, and the rear portion extends 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 thus constructed latch device will be described with reference to the drawings. First, in a normal state, the lever 22 is fixed to the fixing piece of the rotating cylinder 10 as shown in FIG. Since the spring 21 is urged by the spring 20 in a slight pulling direction, the distal end portion 22 b is pressed by the pressing piece 23, and the front surface of the pressing portion 22 a is fixed to slightly protrude from the concave portion 31 of the handle 5. Here, the door 3 is in a closed state, and the latch claws 12 are engaged with the engagement pieces 13 in the step portion 4.
(See FIG. 5).

In order 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.

The rotation of the rotary cylinder 10 causes the latch rod 1
1 is similarly rotated, so that the latch claw 12 is
(See FIG. 5), and 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).

Thus, by sandwiching both sides of the handle 5 projecting forward of the door 3 with one hand, the pressing portion 22a of the lever 22 provided in the recess 31 formed on one side of the handle 5 is provided.
Is released, the engagement between the latch claw 12 and the engagement piece 13 is released, the door 3 can be opened, and the latch claw 12 is released by stopping the pressing of the pressing portion 22a. Automatically return 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 constituting one side surface of the handle 3 is sandwiched by one hand on both sides of the handle 5 projecting vertically from the front surface of the door 3. 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 and closing operation of the door 3 is easily and reliably performed. .

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

Further, since it is not necessary to provide a handle hole or the like for operating the lever 22, the handle 5 and the like are made compact and the aesthetic 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, by sandwiching both sides of the handle protruding from the front surface of the door with one hand, the front part of the lever constituting one side of the handle is pressed, Since the rear portion of the lever rotates the latch rod to release the engagement between the latch claw and the engaging portion of the furniture body, the operability of opening and closing the door is improved. Also, there is no need to provide a handle hole or the like for lever operation, and the handle is compact, so that the door can be easily attached without spoiling the aesthetics of the door, and the lever is attached to the handle using a tool. Easy to use without using.

[0027]

[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 sectional view showing a conventional door latch device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Locker 2 Opening 3 Door 4 Step 4a Window 5 Handle 5a Attachment 6 Keyhole 7 Attachment plate 7a Hole 8 Screw 9 Supporting piece 10 Rotating cylinder 11 Latch rod 12 Latch claw 13 Engaging piece (engaging part) 14 Supporting member 15 Stopper piece 16 Lock device 17 Slide member 18 Locking piece 19, 21 Fixed piece 20 Spring 22 Lever 22a Pressing portion 22b Tip portion 23 Pressing piece 24 Cover body 25 Depression 25a Mounting plate 26 Through hole 27 Screw 28 Projection 29 Locking piece 30 hole 31 recess

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E05C 9/08 E05B 65/02 E05C 3/16

Claims (1)

(57) [Claims] 1. A latch rod having latch claws at both ends thereof which can be engaged with an engaging portion of a furniture main body. It is pivotally supported in a rotationally biased state in the engagement direction together with the protruding pressing piece,
Also, at a predetermined location on the front surface of the door, a handle having a recess formed on one side is provided to protrude forward, and a through-hole is provided to communicate with the recess of the handle and penetrate the back surface of the door. In the through hole, a lever abutting on the pressing piece is pivotally attached in the front-rear direction so as to rotate the latch rod, and at least a front portion of the lever is extended from a front surface of the door into a recess of the handle, The front portion of the lever is a pressing portion that forms a part of the side surface of the handle , and the latch claw is engaged with the engaging portion.
In this state, the front surface of the pressing portion is slightly
It is fixed to protrude and protrudes vertically to the front of the door
By gripping both sides of the handle with one hand, the handle
The pressing part of the lever that constitutes one side of the
Structure in which the engagement between the claw and the engagement portion is released
As a further configuration, a locking piece that projects elastically in the vertical direction above and below a middle part of the lever, while projecting as a shaft is projected opposite to the upper and lower pieces sandwiching the through hole at the rear part of the handle. Is formed, by inserting the lever from the rear of the door, the pressing piece and the tip of the lever are brought into contact with each other, and the engaging holes provided in the locking piece are respectively engaged with the projections. A door latch device for furniture, wherein the lever is pivotally supported so as to be rotatable.