JP2587384B2 - Latch mechanism for doors, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a latch mechanism for doors and the like which can be widely applied to drawers and doors for office furniture, general furniture, partitioning devices and the like.

[0002]

2. Description of the Related Art Steel office furniture and the like are provided with drawers and doors (hereinafter simply referred to as doors). The same applies to a partition device for partitioning an indoor space, a built-in storage space called storage furniture, and the like.

[0003] As a conventional latch mechanism for a door or the like, a tongue piece for detaching a catch portion is provided inside a handle portion of a door or the like, and when a finger is put on the handle portion to perform a pulling operation, at the same time, a pulling operation is performed. It is known that a tongue piece can be operated, and a one-handed operation can perform a tripping operation of a catch portion and an opening operation of a door or the like by one behavior.

[0004]

According to the prior art, the pulling portion must be formed so as to be depressed low from the front surface of the drawer or the like or to protrude high from the front surface. It is necessary to make a depressed portion or a protruding portion corresponding to the handle, and the tongue for operation must be attached to the position inside the handle where the fingers can be hooked. In other words, at least four fingers except for the thumb must be applied, and the disadvantage that the surface design of the door and the like is markedly restricted is inevitable.

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an operation lever having an operation portion capable of being pushed by being fitted into an operation window of a frame attached to a door or the like. It is an object of the present invention to provide a latch mechanism such as a door which can greatly expand the flexibility of a surface design such as a door.

[0006]

Means for Solving the Problems A first invention according to this application for achieving this object is provided with a door or the like,
It has a frame that opens an operation window on a part of the front, a rotating shaft that can be freely rotated in the vertical direction such as a door, and a push-operable operation unit that fits the operation window. An operation lever fixed to the rotation shaft by being fitted therein, and a spring member holding the operation lever so that the operation portion is in a standby position parallel to the front surface of the frame body, the rotation shaft being located on the immediate inside side of the operation window. In addition, the gist of the invention is to provide a latch hook that is disposed on the front side of the frame body and protrudes from the back side of the door or the like.

According to a second aspect of the present invention, there is provided a frame which is attached to a door or the like and has an operation window at a part of the front surface, a rotation shaft which is rotatably mounted on the door or the like in a vertical direction, and which is compatible with the operation window. An operating lever having a push-operable operating portion, the operating lever being fixed to the rotating shaft by fitting the operating portion into the operating window, a latch hook member interlocked with the rotating shaft, and biasing the hook member to the engaging position A spring member, and the rotation shaft is disposed on the front side of the frame near the inside of the operation window, and the operation member is parallel to the front surface of the frame through the hook member and the rotation shaft. The gist of the present invention is to hold the operation lever so as to be in a proper standby posture.

The rotating shaft can be divided into upper and lower parts via an operation lever, and a name plate holder can be attached to the operation part.

[0009]

According to the first aspect of the present invention, the operating lever is fixed to the rotating shaft such that the operating portion is fitted into the operating window of the frame, and is held in the standby position by the spring member. By pushing the operation unit inward with the tip of the finger and tilting the operation lever, the rotation shaft can be rotated and the latch hook can be released. At this time, the finger is on the back side (the side where the nail is
By pressing the operation unit with the same hereinafter, the abdomen of the finger (the side with the fingerprint, the same applies hereinafter) can be hung on the side edge of the operation window at the same time as the completion of the pressing operation. A door or the like can be opened by adding a pull operation. Also, since the fingers used for the pushing operation can be only the index finger or about one to three fingers including the index finger and the middle finger, the operation part and the operation window for accommodating the operation part are extremely small. And the surface design of the door and the like can be neatly finished.

[0010] The rotating shaft is the center of rotation of the operating lever when the operating portion of the operating lever is pushed to tilt the operating lever. On the other hand, since this rotation axis is disposed on the front side of the frame body immediately inside and inside the operation window,
When the operating portion of the operating lever is pushed and operated, the trajectory of the rotating tip (the tip on the free end side which does not correspond to the rotating axis, the same applies hereinafter) does not enter the inside of the side of the operating window greatly. Even when the rotating tip of the operating unit is pushed by the back of the finger, the tip of the fingernail does not come off the tip of the operating unit. The side can be smoothly hung on the side edge of the operation window. Further, even when the finger is removed from the operation window after the door or the like is opened, there is no possibility that the finger is too deeply hanged on the side edge of the operation window, thereby making it difficult for the finger to be pulled out. That is, by appropriately setting the position of the rotating shaft, the overall operability can be extremely smooth.

According to the structure of the second invention, the hook member operates in conjunction with the rotation shaft, and the rotation shaft is rotated by pushing the operation portion of the operation lever similarly to that of the first invention. As a whole, the first
It can work in the same way as the invention. Note that the hook member at this time is a member separate from the rotating shaft and can be easily manufactured with any strength, so that it is easy to strongly lock the door and the like.

If the rotating shaft is divided into upper and lower parts, the rotating shaft at this time can be formed by combining two members having a length of about 1/2 of the height of the door or the like. And so on can be more easily dealt with.

If a name plate holder is attached to the operation portion of the operation lever, it is not necessary to make an independent name plate holder in addition to the handle portion, so that the surface design can be made smarter.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

A latch mechanism such as a door includes an operation lever 11 and
A rotating shaft 12 and a frame F (FIGS. 1 and 2);
As a whole, it is assembled on the door T of the filing cabinet B. In addition, filing cabinet B
On each of the ceiling and bottom inner surfaces of the
3, 13 are protruded.

The frame F is a horizontally elongated member having the same length as the width of the door T. The frame F is attached to the front of the door T at an intermediate portion in the vertical direction of the door T. An operation window F1 is provided on a part of the front of the frame F.
Is opened, and a lock L is attached near the operation window F1.

The operation lever 11 is provided with support portions 11b, 1b on the back side of a rectangular operation portion 11a which fits the operation window F1.
1b, and the rotating shaft 12 is
b, 11b, and are assembled integrally with the operation lever 11 through the base ends thereof.

The operating lever 11 is fixed to the rotating shaft 12 such that the operating portion 11a is fitted into the operating window F1 of the frame F. The rotating shaft 12 is attached to the door T via an arbitrary number of brackets 12c so as to be rotatable in the vertical direction. The rotating shaft 12 is disposed sufficiently close to the front side of the frame F immediately inside the operation window F1 (FIGS. 2 and 3). A spring member 14 is mounted on the rotating shaft 12 in correspondence with the operation lever 11.
The spring member 14 holds the operation lever 11 so that the operation unit 11a is in a standby posture parallel to the front surface of the frame F.

Both ends of the rotating shaft 12 are bent at a right angle to make the door T
(FIGS. 1 and 2), and latching hooks 12a, 12a bent at an asymmetric mountain
Are formed. When the operation lever 11 is in the standby posture, the fixing pins 13 and 13
The top of 2a is arranged at a position where it can be engaged.

The lock L is rotated by inserting the key L2 into the keyhole L1 so that the tongue La is engaged with the operation lever 11 and the operation position of the operation lever 11 is depressed. It is possible to switch between a two-dot chain line) and an unlocking position (the solid line in the figure) that allows the pressing operation of the operation lever 11. However, when the lock L is in the unlocked position, the operation lever 11 is pushed in the horizontal direction through the operation window F1 to rotate about the rotation shaft 12 (in the direction of the arrow K1 in the figure),
It can be inclined inside the operation window F1.

The latch mechanism such as the door having the above structure operates as follows.

When the door T in the open state is closed with respect to the filing cabinet B, the tip of each hook 12a of the rotating shaft 12 engages with the corresponding fixing pin 13 (FIG. 2), and the rotating shaft 12 , In the direction of arrow K2 in FIG. Therefore, the operation lever 11 at this time is
4 inward (in the direction of arrow K1 in the figure). However, it is assumed that the lock L is switched to the unlock position in advance. When the door T is further closed and the door T is fully closed, each fixing pin 13 gets over the top of the corresponding hook 12a (FIG. 1), and the operation lever 11 is returned to the original standby posture by the spring member 14. That is, the catch portion including the operation lever 11, the rotating shaft 12, and the fixing pins 13, 13 is in an automatic lock state, and the door T can be held in a fully closed state with respect to the filing cabinet B.

After the door T is fully closed in this way, if the lock L is moved to the locked position, the door T can be locked in the fully closed state.

When the door T is opened, the lock L is set to the unlocked position, and then the finger H is first inserted into the operation window F1 (FIG. 3).
By pushing the rotating tip of the operating portion 11a of the operating lever 11, the operating portion 11a is pushed inward and the operating lever 11 is tilted. As a result, each hook 12a of the rotating shaft 12 moves in the direction of arrow K3 in the figure to disengage from the corresponding fixing pin 13, and the catch portion can be unlocked. If the finger H used to push the operating lever 11 is used on the back side, the abdominal side of the finger H can be pushed on the operating lever 11 and simultaneously hang on the side edge F1a of the operating window F1. , Frame F as it is
Can be opened to the fully open position by pulling toward the front side. Note that the finger H when pushing the operating lever 11 is operated.
It is convenient to use only one index finger or two or three fingers including the index finger and the middle finger.

[0025]

[Other Embodiments] The rotating shafts 12, 12 may be connected to the operating lever 11 in the vertical direction (FIG. 4). That is, the rotating shafts 12, 12 can be vertically divided via the operation lever 11.

Each rotating shaft 12 has a bent portion 12 at the tip.
The latch hook member 16 may be actuated via b (FIG. 3). However, each hook member 16
It has a hook 16a and is swingably attached to a bracket 12d via a shaft 17. A spring member 18 is mounted on the shaft 17, and the hook member 16 is
8, it is constantly urged in the direction of the arrow K4 in the figure and is held at the engagement position (solid line in the figure).

An operation lever 1 is provided through an operation window F1 of the frame F.
When the push button 1 is pressed (in the direction of the arrow K5 in the figure), the rotating shaft 1
2 and 12 rotate in the direction of arrow K6 in FIG.
Can be swung in the direction opposite to the direction of arrow K4 against the spring member 18. Therefore, if an engaging hole C1 is provided for the structural member C of the filing cabinet B so as to correspond to the hook portion 16a of each hook member 16 (FIG. 5), the hook portion 16a is provided in the engaging hole C1. By engaging and disengaging, the catch portion can be locked and unlocked (solid line and two-dot chain line in FIGS. 4 and 5). Each hook member 16
It is possible to easily improve the latch strength of the catch portion by making the and the structural member C firmly.

4 and 5, each rotating shaft 1
2. Each hook member 16 is attached to the door T via a common bracket 12d. The bracket 12d has a tongue piece 12 for regulating the rotation position of the rotation shaft 12.
d1 and 12d2 are formed. On the other hand, hook member 1
6 engages with the bent portion 12b to form the rotating shaft 12
The spring member 18 urges the hook member 16 to the engagement position, thereby holding the operation lever 11 in the standby posture via the rotation shaft 12 by interlocking with the rotation of.

In the above description, the operation lever 11
The size of the operation window F1 of the frame F that accommodates this can be set to an arbitrary size equal to or more than one, according to the number of fingers H used during the pushing operation. The side edge F1a of the operation window F1 on the side where the finger H is to be hung should be smoothly rounded on the back side or formed with a finger-hung protrusion having an appropriate cross-sectional shape (FIG. 4, FIG. 2).

The operating lever 11 may be provided with an optional type of name plate holder on the operating portion 11a. The operation lever 11 is parallel to the front surface of the door T in the standby position, and the entire operation lever 11 is visible through the operation window F1 of the frame F. Therefore, the entire name plate holder is easily visible. Thus, the contents of the filing cabinet B can be confirmed, and furthermore, it can be effectively used as a display of the position of the operation lever 11 itself, that is, a display of a position where a pressing operation should be performed by the finger H, and the like.

The present invention can be widely applied not only to the door T of the filing cabinet B but also to drawers and doors of office furniture, partitioning devices, storage spaces, and the like.

[0032]

As described above, according to the first invention of the present application, a frame having an operation window on a part of a front surface,
By providing a rotating shaft having a latch hook, an operating lever for fixing the operating portion to the rotating shaft by fitting the operating portion into the operating window, and a spring member, the operating lever is made extremely small together with the operating window, and Because it is possible to take a standby posture parallel to the front, the surface design of the door etc.
Compared to the conventional one that requires a large handle, it can be significantly improved, the flexibility can be expanded, the position of the rotating shaft is set appropriately, and the operating part at the time of pushing operation By appropriately setting the trajectory of the rotating tip, there is an excellent effect that the overall operability can be extremely smooth.

According to the second aspect of the present invention, the hook member can be formed separately from the rotating shaft by providing the hook member for the latch that is interlocked with the rotating shaft, so that an arbitrary latch strength can be easily realized. And the door and the like can be strongly locked.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view of the overall configuration.

FIG. 2 is an explanatory perspective view of a main part configuration.

FIG. 3 is an enlarged cross-sectional explanatory view corresponding to the line YY in FIG. 2;

FIG. 4 is a diagram corresponding to FIG. 2, showing another embodiment.

FIG. 5 is an explanatory cross-sectional view corresponding to the line ZZ in FIG. 4;

[Explanation of symbols]

 T: Door F: Frame body F1: Operation window 11: Operation lever 11a: Operation part 12: Rotary shaft 12a: Hook 14, 18: Spring member 16: Hook member

Claims (4)

(57) [Claims] 1. A frame attached to a door or the like and opening an operation window on a part of a front surface, a rotating shaft rotatably mounted on a door or the like in a vertical direction, and a push operation suitable for the operation window. An operation unit having an operation unit, the operation lever being fixed to the rotating shaft by fitting the operation unit into the operation window, and the operation lever being held such that the operation unit is in a standby posture parallel to the front surface of the frame body. The rotating shaft is disposed on the front side of the frame body immediately inside the operation window and has a latch hook protruding on the back side of a door or the like. Latch mechanism for doors and other features. 2. A frame attached to a door or the like and opening an operation window on a part of the front surface, a rotating shaft rotatably mounted on the door or the like in a vertical direction, and a push-operable fitting to the operation window. An operating lever having an operating portion, the operating portion being fitted into the operating window and being fixed to the rotating shaft, a latch hook member interlocked with the rotating shaft, and biasing the hook member to the engaging position; The rotation shaft is disposed on the front side of the frame body immediately inside the operation window on the front side of the frame, and the spring member is connected to the operation unit via the hook member and the rotation shaft. A latch mechanism for a door or the like, wherein the operation lever is held so that the operation lever is in a standby posture parallel to a front surface of the frame. 3. The latch mechanism for a door or the like according to claim 1, wherein the rotation shaft is vertically divided via the operation lever. 4. The latch mechanism for a door or the like according to claim 1, wherein a name plate holder is attached to the operation unit.