JPS5850046Y2 - Drawer latching device in filing cabinet - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a drawer latching device in a filing cabinet.

Conventionally, in a drawer latch device for a filing cabinet, an engaging protrusion provided on the inner surface of the cabinet is used to operate an operating lever provided on the drawer and located in a finger insertion recess on the front panel of the drawer. A latch that can swing is engaged when the operating rod is not operated to prevent the drawer from popping out, but the center of swing of this latch is located closer to the front plate than the retaining protrusion. Since the drawer is located in the lower position, it has the disadvantage that, for example, when the drawer is pulled with strong force when the operating lever is not operated, the engagement may be disengaged.

This invention improves the drawbacks of the conventional ones as described above.This invention will be explained based on the embodiment shown in the drawings below.1 is a drawer, and the front plate 2 of this drawer 1 is A finger insertion recess 3 is formed in the upper center,
The hole 10 of the mounting piece 7 is L-shaped, and the part of the horizontal part 4 near the L-shaped bent part is fixed to the back surface of the front plate 2.
The horizontal portion 4 of the operating rod 6, which penetrates through and can swing up and down using this as a fulcrum, extends through the notches 9, 9' provided in the side plates 8, 8' of the finger insertion recess 3. The vertical part 5 of the operating rod 6 is placed in one U-shaped part 11 formed by bending the side end of the front plate 2. hanging down.

Of the pair of left and right side plates 12, 12' extending in the depth direction and facing each other on the back surface of the plate 2, the side plate 12 on the vertical portion 5 side of the operating rod 6 has an outward U-shape near the front side of the outer surface thereof. A mounting plate 13 extending in the length direction of the blank side plate 12 is fixed horizontally via screws 14.

Inside the mounting plate 13 is a long latch piece 15 with its rear part protruding from the rear of the mounting plate 13 and its middle part pivoted by a shaft 16 that vertically passes through the mounting plate 13. The tip of the latch piece 15 is held rotatably in the horizontal direction from the center of the mounting plate 13, and the tip of the latch piece 15 is always attached to the mounting plate 1 between the mounting plate 13 and the latch 15.
A push spring 17 is interposed to maintain the opening in a protruding state from the outer surface of the opening.

Further, a longitudinally long interlocking rod 20 is provided on the front part of the upper surface of the mounting plate 13, the central part of which is pivotally supported via a screw 18 and a collar 19, and which is swingable in a direction parallel to the upper surface. Inserting the hanging part 21 provided at the rear end of the interlocking rod 20 into the hole 22 bored at the rear end of the latch 15,
A flat part 24 is formed at the tip of the interlocking rod 20, which is located inside the U-shaped part 11 of the front plate 2 through a hole 23 bored therein. It is engaged with a forked portion 26 provided at the lower end of the vertical portion 5 of the operating rod 6.

On the other hand, a reinforcing vertical frame member 25 that protrudes closer to the side plate 12 than the tip of the latch piece 15 is provided on the inner surface of the cabinet at a position in front of the tip of the latch piece 15.

Note that 27 is a cover plate provided on the upper part of the front plate 2.

When a finger is inserted into the finger insertion recess 3 formed on the front plate 2 and the horizontal part 4 of the operating rod 6 positioned there is pushed up, the operating rod 6 tilts on a vertical plane using the mounting piece 7 as a fulcrum. As a result, the interlocking rod 20 horizontally rotates clockwise in FIG. 2 using the screw 18 as a fulcrum, and the rear end of the interlocking rod 20 moves in the direction of arrow a.

Then, the latch piece 15 uses the shaft 16 as a support shaft and presses the spring 1.
7 in the clockwise direction in FIG.
The tip of the drawer 1 is removed from facing the vertical frame member 25 and recessed into the mounting plate 13, allowing the drawer 1 to be pulled out.

Furthermore, when pushing in the drawer 1 that has been pulled out, when the front face of the drawer 1 is pushed in, the latch piece 15 is kept in a state of protruding outward by the push spring 17, but while its outer surface is in contact with the vertical frame member 25, It swings toward the side plate 12 against the biasing force of the push spring 17, and after passing through the vertical frame member 25, it is restored to the state shown in FIG. 2, and the drawer 1 is housed in the cabinet and held in a locked state. It is something that will be done.

As mentioned above, this device is constructed so that the latch piece swings in the horizontal direction when the operating lever is operated, and is released from the vertical frame member provided on the inner surface of the cabinet. By configuring the center of swing of the latch piece to be located behind the vertical frame member, when the drawer is forcibly pulled out without operating the operating lever, the tip of the latch piece will move away from the side plate, in other words. This has the advantage that it moves in a direction that strengthens the state of engagement with the vertical bar member, thereby reliably preventing the drawer from being pulled out.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; Fig. 1 is a schematic perspective view of the drawer, Fig. 2 is a cross-sectional view of the main parts, Fig. 3 is a diagram showing the relationship between the mounting plate, latch, and interlocking rod, and Fig. 4 is a diagram showing the relationship between the mounting plate, latch, and interlocking rod. The figure is an enlarged view showing the connecting portion between the operating rod and the interlocking rod. In the drawing, 1 is a drawer, 2 is a front plate, 3 is a recess for finger insertion, 6 is an operating lever, 13 is a mounting plate, 15 is a latch piece, 1
7 is an extrusion spring, 20 is an interlocking rod, and 25 is a vertical frame member.

Claims (1)

[Scope of utility model registration request] On the back of the front panel of the drawer that can be accessed into and out of the cabinet, there is provided an L-shaped operating rod that is supported near the bent portion of the horizontal portion and tilts, and the horizontal portion of the operating rod is tilted toward the front. It is horizontally suspended in a finger insertion recess provided in the face plate, and the lower end of the vertical part is pivoted to one side plate of the drawer via a mounting plate, making it possible to swing in the horizontal direction. The interlocking rod is connected to the tip of the interlocking rod, and the mounting plate is capable of horizontally swinging about the middle part as a fulcrum, and the tip part normally projects outward from the mounting plate when biased by a biasing member. A drawer in the cabinet is provided with a latch piece that is held in engagement with a vertical frame member provided on the inner surface of the cabinet, and the rear end of the latch piece is connected to the rear end of the interlocking rod. latch device.