JPH0516370Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to the structure of a latch device for a drawer in furniture such as a desk or a cabinet.

[Conventional technology]

Conventionally, various latch devices have been devised for locking a drawer in its stored position to prevent it from accidentally popping out, and for automatically releasing the locking state when the drawer is pulled out using the drawer handle. There is. As one of the prior technologies,
In Publication No. 23412, a vertically long latch shaft is rotatably supported on one side of the drawer, a latch attached to the latch shaft is biased toward a locking part of the cabinet, and the latch is placed on the back side of the end plate of the drawer. A latch actuator that slides vertically is connected to the tip of the horizontally long lever rod provided, and the bent end of the latch shaft is brought into sliding contact with the inclined surface of the latch actuator, and the intermediate portion of the lever rod is The crank part of the is placed horizontally in the handle and fitted into the latch lever that is pivotally connected, and by rotating the latch lever upward with your fingers, the lever rod is rotated around its axis, and the latch actuator is moved in the vertical direction. It is proposed that the latch be configured such that movement causes the latch to disengage from the locking part of the cabinet.

[Problem that the invention attempts to solve]

In this design, the latch lever is installed in the upper storage space inside the pull hole, and when the drawer is pulled out, the latch lever must be rotated upward with the finger inserted into the handle, otherwise the latch will come off. Therefore, when the height of the drawer is low, the bending direction of the finger inserted into the handle will be upward, so by pushing up the latch lever with the tip of the finger pointing upward, the latch of the drawer can be released. It can be easily removed.

However, when a drawer is located at a high position in a cabinet, etc. (especially when the drawer is located at a position higher than the worker's shoulder height), the direction in which the fingers are bent when the drawer is pulled out is usually downward.
In the above-mentioned prior art, the posture of the hand that rotates the latch lever is strained, and from an ergonomic point of view, there is a drawback in the operability of the drawer.

Furthermore, in the prior art, even if the design is changed so that the latch is released when the latch lever is rotated downward in the opposite direction, the latch cannot be released when the latch lever is rotated upward. Different types of latch levers and the like must be installed depending on the height position of the drawer, which increases the process of manufacturing the drawer and the number of parts to be prepared, leading to an increase in cost.

Moreover, because the operator is forced to change the direction in which the user's fingers should be placed just because the height of the cabinet is different, this also poses a problem in the operability of the drawer.

The present invention aims to solve the problems of the prior art by configuring the latch so that it can be released by rotating the pull body in any direction, up or down.

[Means for solving problems]

Therefore, in the present invention, a vertically long latch shaft is rotatably supported on one side of the drawer, the latch attached to the latch shaft is biased toward the locking part of the cabinet, and the latch is attached to the back side of the end plate of the drawer. At the tip of a horizontally elongated operating rod which is pivotably mounted to be vertically movable, an operating body is provided having an inclined surface that comes into contact with the horizontal contact portion of the latch shaft,
In a latch device configured such that the latch is disengaged from the locking portion of the cabinet by upward or downward movement of the actuating body, a pull main body provided in a pull hole in a drawer head plate is moved upwardly or downwardly. The moving axis is arranged so as to be substantially parallel to the longitudinal direction of the operating rod, and the pull body is formed into a forward open shape such as a horizontal V-shape or a horizontal U-shape in cross section so as to have finger hooks at the top and bottom, While the spring is biased so as to return the pull body and the operating rod to the neutral position of their vertical movement, the pair of abutting portions of the swinging rod that are pivotally connected with the pin are connected to the pivoting portion of the operating rod and the operating body. The handle is configured such that the latch is brought into contact with the operating rod between the handle body and the latch is released by vertical swinging of the swinging lever, and one end is engaged with a protrusion protruding from the back surface of the pull body, and the handle is freely swingable up and down. The other end of the intermediate swinging rod, which is pivotally connected to the swinging rod, is connected to the swinging rod by a pin.

[Functions and effects of the invention]

In this way, in the present invention, the pull body is disposed in the pull hole of the end plate of the drawer so that it can be moved up and down, and the pull body has a horizontal V-shaped cross section or a horizontal U-shaped cross section so that the finger hooks are provided at the top and bottom. Since the pull body is formed in a forward open shape such as a shape, and is biased by a spring so as to return the pull body to the neutral position of its vertical movement, the pull body can be moved upwardly regardless of the height of the installation position of the drawer. It can be rotated in any downward direction, and the pull body can be returned to its neutral state simply by releasing the inserted finger from the pull body.

The pair of abutting portions of the swinging rod, which are pivotally connected to each other so as to be vertically swingable, are configured to abut on the operating rod between the pivoting portion of the operating rod and the operating body. Therefore, when the swinging rod swings in any direction, the operating rod itself is rotated in the direction in which it is pressed by the abutting portion of the swinging rod, centering on its pivot point.
That is, the lateral abutting portion of the latch shaft is rotated on the inclined surface of the actuating body in a direction to release the latch.

One end of an intermediate swinging rod pivotally attached to the back side of the head plate is engaged with a protrusion projecting backward from the back side of the pull body, and the other end of the intermediate swinging rod is connected to the swinging rod with a pin. Therefore, the intermediate swinging rod swings up and down in response to the upward or downward rotation of the pull main body, and this vertical swinging movement can be transmitted to the swinging rod to move the operating rod.

In this way, the vertical movement of the pull body can be controlled in one direction only through the protrusion on the back side, the intermediate swinging lever that engages with the protrusion, and the swinging lever connected to this. Since the rotation is converted into rotation, only one type of latch device parts such as the pull body need be prepared, and the assembly work of the latch device is also simplified.

Moreover, the latch can be released by rotating the pull body in either the upward or downward direction from any part of the drawer on furniture such as a cabinet, providing great flexibility and improving the drawer work. This has a remarkable effect.

〔Example〕

Next, an embodiment of the present invention will be described. FIG. 1 shows a drawer 1 in a desk or cabinet, and a head plate 2 of the drawer 1 is equipped with a latching device 3 of the present invention.

On the back side of the mirror plate 2 of the drawer 1, a front plate 2a and a rear plate 2b made by bending thin steel plates are overlapped at their peripheral edge plates with an appropriate gap between them, and are fixed by welding or the like as appropriate. It is something. Reference numeral 5 designates a top-open tray that is attached to the rear plate 2b of the mirror plate 2 via the cover plate 4.

The latch device 3 includes a pull main body 10 facing the pull hole 9 of the end plate 2, an actuating rod 20 disposed on the back side of the end plate 2 substantially parallel to the pull main body 10, and an actuating body 21 attached to the tip of the actuating rod 20. , the operating rod 20 and the pull body 1
0 and a latch shaft 24 with a latch 23 attached thereto.

The pull main body 10 has a mounting hole 8 in the rear plate 2a of the mirror plate 2.
A frame 7 that fits into the frame 7, a pull main body 10 that faces the front through the pull hole 9 of the front plate 2a, and a pair of left and right supports 11, 1.
The mounting hole 8 and the handle hole 9 are both formed in a horizontally long oval shape, but the horizontal dimension of the handle hole 9 is shorter than that of the mounting hole 8.

The pull main body 10 extends from the rear surface of the mirror plate 2 to the rear plate 2a.
The handle main body 10 is formed into a cylindrical shape with a substantially semicircular cross section, and both longitudinal ends of the substantially semicylindrical portion are shaped like hemispherical shells. to form. A pair of upper and lower opening edges along the longitudinal axis of the substantially semi-cylindrical portion of the pull main body 10 have an inward protrusion formed on the inner diameter side thereof to form a longitudinal finger rest portion 10a,
10a.

A pair of upper and lower finger hooks 1 of the pull main body 10 are provided.
0a and 10a are arranged so as to face the front from the pull hole 9 of the front plate 2a. The mounting hole 8 and the handle hole 9 are both formed in a horizontally long oval shape, but the horizontal dimension of the handle hole 9 is shorter than that of the mounting hole 8.

Fin portions 13 having an inverted V-shaped cross section are integrally provided at both ends of the pull main body 10, and the fin portions 1
A pair of left and right rotating shaft portions 12, 12 are integrally molded to protrude from the base of the V-shaped surface of No. 3.

A pair of supports 11, 11 that rotatably support each rotation shaft 12 are formed in a substantially U-shape in cross section, and both legs 11a, 11a of each support 11 are connected to both left and right ends of the frame 7. The substrate 11b of the support body 11 is configured so that it can be removably inserted into the guide grooves 14, 14 formed along the longitudinal direction of the support body 11.
The free edge of the handle body 10 has a rotating shaft portion 1.
A notch support groove 15 into which the holder 2 fits is formed.

Further, a pull main body 10 is provided on both supports 11.
A spring means is provided for returning the pivot shaft to the neutral position when swinging about the 12 pivot shafts.

In one embodiment, each support 11 has the support groove 1 extending from the rising portion 11c of the substrate 11b.
The plate-shaped spring piece 16 is made to protrude like a cantilever toward the free end with the base plate 11.
The fin portion 13 of the pull main body 10 is sandwiched between the rear surface side of the pull handle body 10 and the rear surface side of the pull handle body 10.

Each of the supports 11 is an injection molded product made of synthetic resin, and at this time, the spring pieces 16 are formed so as to be inclined toward the back side of the substrate 11b as they go toward the free end side (the fifth (See the dashed line in the figure), the spring force is made to act sufficiently on each of the fin portions 13.

Further, the inverted V-shaped fin portion 13 is such that when the pull main body 10 rotates around the rotation shaft portion 12, one surface of the fin portion 13 contacts the back surface of the substrate 11b of the support body 11. By touching,
It also serves as a stopper that prevents further rotation.

The outer peripheral surface of the frame 7 that fits into the mounting hole 8 of the rear plate 2b of the end plate 2 in the drawer 1 is provided with protruding claws 17 at appropriate positions in the longitudinal direction, and each of the protruding claws 17 is attached to the rear plate 2.
It engages with the engagement hole 18 of b.

The latch device 3 includes a pull main body 10 facing the pull hole 9 of the end plate 2, an actuating rod 20 disposed on the back side of the end plate 2 substantially parallel to the pull main body 10, and an actuating body 21 attached to the tip of the actuating rod 20. , the operating rod 20 and the pull body 1
The swinging rod 22 and the intermediate swinging rod 2 disposed between the
8 and a latch shaft 24 with a latch 23 attached thereto, and a torsion spring 38 or the like biases the latch 23 toward a locking portion 37 in the main body of the cabinet or the like.

The operating rod 20 having an inverted L-shaped cross section is attached to the pull body 10.
It is disposed horizontally substantially parallel to the rotation axis of the lever, and is pivotally connected to the cover plate 4 via a shaft 25 so as to be movable up and down, and the actuating body 21 at the tip of the actuating rod moves upward by a spring 26. bias in the direction.

The swinging rod 22 disposed between the upper surface of the operating rod 20 and the back surface of the pull main body 10 is formed in a horizontal U-shape in cross section, and the pin 27 is pivoted at a midway point in the left-right direction of the swinging rod 22. is the middle part in the left-right direction between the pivot point of the shaft 25 of the operating rod 20 and the operating body 21 at the tip, and the pair of left and right abutting portions 22a, 22b at the lower end of the swinging rod 22 with the pin 27 in between, The upper surface of the operating rod 20, the shaft 25 and the operating body 2
1 at the middle position between the left and right.

The pin 29 pivot point of the intermediate swinging rod 28 is the operating rod 2.
A notched groove-shaped engagement part 40 is formed at one end of the intermediate swinging rod 28, and the engagement part 40 is connected to the back surface of the pull body 10 near the middle part. The intermediate swinging rod 28 is engaged with a horizontal plate-shaped protrusion 30 that projects rearward from a hole in the frame 7 so as to be clamped from above and below, while the other end of the intermediate swinging rod 28 is connected to the swinging rod 22 with a pin 41. Reference numeral 42 is an elongated engagement groove into which the pin 41 is fitted.

As shown in FIGS. 2 and 3, the actuating body 21 is
It has a block shape made of synthetic resin with a vertical piece 31 at the bottom and an inclined surface 32 next to it, and an operating rod 20.
A screw 33 is fixed to the operating body 21 at the tip thereof. In this embodiment, the inclined surface 32 faces the rear plate 2b of the mirror plate 2, and has a cross-sectional shape that approaches the rear plate 2b as it goes upward, and the latch 23 facing the rear of the drawer 1 is located at the lower end. The upper end of the vertically long rod-shaped latch shaft 24 that is attached to the actuating body 2
The latch shaft is disposed so as to be in contact with the front surface of the vertical piece 31 and the inclined surface 32 of 1, and as the actuating body 21 moves downward, the contact portion 34 slides into contact with the inclined surface 32 and rotates horizontally. 24 and latch 23 are associated for rotation in the direction of arrow A in FIG.

Note that reference numeral 35 is a stopper that restricts the upward position of the actuating body 21, and when the top surface of the actuating body 21 comes into contact with the stopper 35 cut up from the cover plate 4,
The operating rod 20 is in a substantially horizontal state, and the pull body 1
0 is set to be at the neutral position of vertical movement.

In this configuration, since the length of the pull hole 9 is shorter than the mounting hole 8 of the rear plate 2b, the frame body 7 can be attached to the rear plate 2b.
When inserted from the side, the pair of left and right supports 11, 11 attached to both left and right ends of the frame 7 are not exposed to the surface side of the front plate 2a, and The pull main body 10 is supported so as to be able to move vertically, and its opening edge extends from the pull hole 9 to the front plate 2.
It will be faced so that it slightly protrudes toward the surface side of a.

To open the drawer 1, insert your finger into the opening edge from the inner diameter side of the approximately semi-cylindrical pull main body 10, hook your finger on one of the finger hooks 10a, and pull it forward.

At this time, depending on the bend of the fingertip, the handle body 1
0 moves up and down appropriately around the rotating shaft portions 12, 12, and the spring pieces 16, 16 on the left and right supports 11, 11 elastically support each fin portion 13 of the pull main body 10. become.

For example, when opening drawer 1 with the palm facing downward, the fingertips should be bent downward and the pull body 1
Since the finger hook 10a at the lower position of 0 is pulled forward, the opening of the pull body 10 faces diagonally upward, and the protrusion 30 on the back side of the pull body 10 faces downward, as shown by the two-dot chain line in FIG. Because it swings, the protrusion 3
The intermediate swinging rod 28, whose one end is engaged with the pin 29, swings around the pin 29, and through this, the swinging rod 22 swings around the pin 27 at one contact portion 2 of the swinging rod 22.
Rotate so that 2a faces downward.

Since the abutting portion 22a presses the operating rod 20 downward, the operating member 21 at the tip of the operating rod 20 descends around the shaft 25, and the inclined surface 32 of the operating member 21 moves toward the latch shaft 25. By rotating the lateral abutment 34 of the drawer 1 forward, the latch 23 attached to the latch shaft 24 is released from the hole-like locking part 37 in the main body of the cabinet and the drawer 1 can be pulled out.

On the other hand, when opening the drawer 1 with the palm facing upward, the opening of the pull main body 10 will face diagonally downward, and the protrusion 30 on the back side of the pull main body 10 will swing upward, so that one end of the drawer 1 will be attached to the protrusion 33. The swinging rod 22 is connected to the pin 2 via the intermediate swinging rod 28 that is engaged with the pin 2.
7 as the center, the other contact portion 22b of the swinging rod 22
Rotate so that it points downward.

Even in this state, the contact portion 22b is connected to the operating rod 2.
0 is pressed downward, the actuating body 21 at the tip of the actuating rod 20 descends around the axis 25, as described above, and the inclined surface 32 of the actuating body 21 descends.
The latch 23 is attached to the latch shaft 24 by rotating the horizontal contact portion 34 on the latch shaft 24 forward.
This allows the drawer 1 to be pulled out against the force of the torsion spring 38 and away from the hole-shaped locking part 37 in the body of the cabinet.

In any case, regardless of the bending direction of the fingertip inserted into the inner diameter of the opening of the pull main body 10, and regardless of the direction of the palm, the state in which the finger is deeply and reliably hooked onto the finger hook 10a can be maintained.
When you release your finger from the pull body 10, the spring piece 16
Due to the elastic restoring force and the biasing force of the spring 26, the pull main body 10 is restored to the neutral position so that its opening is substantially perpendicular to the end plate 2 of the drawer 1.

In addition, since the outside of the fingertip does not collide with the finger hook 10a on the opposite side, a smooth drawer operation is possible, so the drawer work performance is improved regardless of the installation height of the drawer 1.

Note that if the spring pieces 16 in the support body 11 become fatigued or break due to long-term use,
It is sufficient to replace only the defective support 11 without replacing other parts such as the pull main body 10.

In the present invention, the spring piece 16 is omitted, and the operating rod 2 is supported by the spring 26 and the stopper 35.
0 and the vertical rotation neutral position of the pull handle body 10.

In the embodiment described above, the operating rod 20 is disposed below the pull body 10 so as to be in contact with the lower surface of the swinging rod 22, but it may also be disposed upside down. That is, the lower surface of the operating rod 20 is arranged so as to come into contact with the other end, which is the upper surface of the swing rod 22,
As the pull body 10 moves up and down, the tip side of the actuating rod 20, that is, the actuating body 21, rises, while the latch 23 moves the inclined surface 32 of the actuating body 21 into engagement with the cabinet as the actuating body 21 rises. In order to rotate in the direction away from the stop, it is sufficient to make the slope opposite to that of the illustrated embodiment.

Further, as shown in FIG. 7, the cross-sectional shape of the pull main body 10 may be formed into a horizontal V-shape, or may be formed into a horizontal U-shape, although not shown. Moreover, it goes without saying that the mirror plate may be made of wood.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and Fig. 1 is a perspective view of the drawer, Fig. 2 is a front view of the main parts of the drawer, Fig. 3 is a perspective view of each part, and Fig. 4 is a perspective view of Fig. 1. Main part sectional view, Fig. 5 is a - line sectional view of Fig. 4, Fig. 6 is a sectional view of main parts.
The figure is a cross-sectional view taken along the line -- in FIG. 5, and FIG. 7 is a cross-sectional view of another embodiment. 1... Drawer, 2... Mirror plate, 2a... Front plate, 2b
... Rear plate, 3 ... Pull device, 4 ... Cover plate, 7
...Frame body, 8...Mounting hole, 9...Handle hole, 10...
...Handle body, 10a...Finger hook part, 11...Support body, 12...Rotation shaft part, 13...Fin part, 15
... Support groove, 16 ... Spring piece, 20 ... Operating rod,
21... Operating body, 22... Swinging rod, 23... Latch, 24... Latch shaft, 25... Shaft, 26... Spring, 27, 29, 41... Pin, 28... Intermediate swinging rod , 40... engaging portion, 30... protrusion, 32...
... Sloped surface, 34 ... Contact portion, 37 ... Locking portion.

Claims (1)

[Scope of utility model registration request] A vertically long latch shaft is rotatably supported on one side of the drawer, and the latch attached to the latch shaft is biased toward the locking part of the cabinet, so that it can freely move up and down on the back side of the end plate of the drawer. An operating body having an inclined surface that comes into contact with the horizontal contact portion of the latch shaft is provided at the tip of the pivotably mounted horizontally elongated operating rod, and the latch is activated by moving the operating body upward or downward. In a latch device configured to be detached from a locking portion of a cabinet, the pull body is provided in the pull hole in the end plate of the drawer so that its vertical axis of movement is approximately parallel to the longitudinal direction of the operating rod. The cross section is horizontally V so that the handle body has finger hooks above and below.
It is formed into a forward-opening shape such as a letter shape or a sideways U-shape, and is biased by a spring so as to return the pull body and the operating rod to the neutral position of vertical movement, while a pair of swinging rods pivotally connected with a pin. The abutting portion is configured to abut the operating rod between the pivot attachment portion of the operating rod and the operating body and to be unlatched by vertical swinging of the swinging rod, and A latch device for a drawer, characterized in that one end of an intermediate swinging rod is engaged with a protruding protrusion and the other end of an intermediate swinging rod is connected to the swinging rod with a pin, the other end of which is pivotally connected to the swinging rod so as to be able to swing up and down.