JP2671815B2 - Drawer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drawer device applied to storage furniture having a plurality of drawers.

[0002]

2. Description of the Related Art Conventionally, in a storage furniture having a plurality of drawers for storing documents and the like, a latch mechanism for preventing a drawer supported by a support body of a furniture body from self-propelled and A lock mechanism is provided for locking the drawer on the support. Also, especially in the case of drawers with shallow depth of furniture, it is prohibited to pull out more than one drawer at a time, because the weight of the drawer may cause the furniture body to lean forward when pulling out more than one drawer at a time. A safety mechanism is also provided.

The latch mechanism is composed of, for example, a latch claw pivotally attached to the side surface of the drawer and an engagement element provided at a portion of the support member corresponding to each drawer. Then, when the drawer approaches the most retracted position, the engaging element temporarily retracts in a certain direction, and when the drawer reaches the most retracted position, the engaging element engages with the latch claw to hold the drawer. It is like this.

The lock mechanism is composed of, for example, an engaging hole provided on the side surface of the drawer and the like, and an engaging claw provided on the support at a portion corresponding to each engaging hole. . Then, when a locking operation is performed, each engaging claw can be inserted into each engaging hole by the action of a link mechanism or the like, and the drawer can be locked to the support body.

The safety mechanism has, for example, a guide member having an inclined surface that descends forward in the front-rear direction of the drawer, a pin that is guided by the guide member when the drawer is pulled out, and a pin that is raised. It is composed of a holding mechanism that holds it in the position and an element that restricts the pulling out of other drawers only while the pin is held in the raised position. And while one drawer is being pulled out, the movement of other drawers is restricted,
You can't pull out more than one drawer at a time.

[0006]

By the way, in such a structure, since the latch mechanism, the lock mechanism, and the safety mechanism are separately provided, it takes a lot of time to dispose the respective parts and the assembly is required. It took time and effort. Also, the number of parts was increased.

An object of the present invention is to eliminate such a problem.

[0008]

In order to achieve the above object, the present invention takes the following measures. That is, in the drawer device according to the present invention, the latch mechanism is provided between the housing and the plurality of drawers, and the desired drawer can be pulled out forward by manually operating the latch claws to the unlatched position. In the drawer device capable of performing the above-mentioned operation, an elevating member arranged to be able to ascend and descend inside a housing, a holding mechanism for holding the elevating member at that position when the elevating member is raised to a predetermined rising position, and a drawer A safety mechanism for raising the elevating member to a predetermined elevated position by using the forward movement of the same and releasing and lowering the elevating member from the holding state by the holding mechanism by using the retracting movement of the drawer; A locking member that engages with the latch claw of each drawer pushed into the retracted position to prohibit the latch claw from operating to the latch release position, and a locking / unlocking operation. Response was characterized by comprising; and a locking mechanism for elevating the elevating member.

As a desirable mode of the lock mechanism, a lock main body in which the operating rod is pushed and retracted in a predetermined direction by locking / unlocking operation, and utilizing the projecting action of the operating rod, the elevating member is brought to a position just before the predetermined raised position. In the case where the lifting force is deenergized by the immersing operation of the operating rod, the operating rod is provided with a movement transmitting element for transmitting the movement of the operating rod to the lifting member in order to engage the latch member with each latch claw. Another example is a structure in which the lifting member can be lowered by its own weight.

[0010]

With this structure, when the latch pawls constituting the latch mechanism are manually operated to the latch release position and the desired drawer is pulled out forward, the safety mechanism moves the lifting member to the predetermined raised position. Move up. The elevating member raised to the predetermined elevated position is held at that position by the holding mechanism. Then, when the lifting member rises, the latch claws are engaged by the latch claws of the drawers pushed into the retracted position to prevent the latch claws from operating to the latch release position. It is prohibited to operate up to. Therefore, the drawers pushed into the retracted position cannot be pulled out.

When the drawer pulled out forward is pushed into the housing, the holding of the lifting member held at the predetermined rising position is released by the safety mechanism, and the lifting member is lowered. Then, the latch claw, which has been prohibited from being operated to the latch release position by the locking member, is released from the prohibition, and the latch is in a releaseable state.

Further, when locking, the operating rod of the lock body constituting the lock mechanism is projected in a predetermined direction. The elevating member is lifted up to the position before the predetermined rising position by the motion transmitting element, and the locking member engages with each latch claw. Therefore, the drawer cannot be pulled out and is locked. Further, in order to unlock the lock, the operating rod of the lock body is immersed. Then, the raising / lowering member held in front of the predetermined raised position is released from the holding by the motion transmitting element and is lowered by its own weight. Then, the engagement between the locking member and each latch claw is released. Therefore, the latch is ready to be released.

As described above, since the safety mechanism and the lock mechanism are configured so that the elevating member and the latch mechanism are commonly used, the number of parts is far greater than that in the case where each mechanism is provided independently. Less.

[0014]

An embodiment of the present invention will be described below with reference to the drawings.

The storage furniture 1 shown in FIGS. 1 to 3 comprises a furniture main body 2 which is a housing and a plurality of, for example, three drawers 3, and one side plate of the furniture main body 2, for example, the left side plate 4. An elevating member 6 arranged to be able to ascend and descend in the inner portion 5, and an elevating member 6 when the elevating member 6 rises to a predetermined rising position.
Holding mechanism 7 for holding the elevating member 6 at that position, and raising and lowering member 6 to a predetermined rising position by utilizing the forward movement of drawer 3 and raising and lowering member 6 by utilizing the backward movement of drawer 3.
Is released from the holding state by the holding mechanism 7 and is lowered, and when the elevating member 6 is raised, the latch claw 9 of each drawer 3 pushed into the retracted position is engaged and the latch claw 9 is latched. A lock member 20 for inhibiting the operation to the release position and a lock mechanism 11 for moving the elevating member 6 up and down in response to a locking / unlocking operation are provided. The external dimensions of this storage furniture 1 are, for example, a height of 105 cm,
The drawer 3 has a width of 90 cm and a depth of 45 cm and has a wide width, whereas the shape has a small depth dimension.

More specifically, the furniture main body 2 has a box shape including a bottom plate 12, left and right side plates 4 and 13, a back plate 14 and a top plate 15, and a suspension rail 16 is provided on an inner portion 5 of the side plates 4 and 13. The drawers 3 are supported so as to be able to be drawn out forward through. A single cylinder lock 17 is arranged on the front surface, and the cylinder lock 17 can lock all drawers 3 at once.

In the inner part 5 near the front end face of the left side plate 4 of the furniture main body 2, an elevating member 6 composed of a channel material made of sheet metal is arranged, with its longitudinal direction aligned with the vertical direction of the furniture main body 2. As shown in FIG. 2, it is arranged so as to be vertically movable so as to be flush with the inner portion 5 of the side plate 4. A pin 19 made of a synthetic resin, which constitutes a safety mechanism 8 that protrudes perpendicularly to the side plate 4 of the drawer 3, is provided at a portion of one side surface of the elevating member 6 corresponding to each drawer 3. A composite member integrally formed with a plate-like locking member 20 made of synthetic resin, which is erected so as to be positioned perpendicularly to the side plate 4 of the drawer 3, is attached. An engaging member 21 made of synthetic resin is fixed to the upper end of the elevating member 6 and has a substantially Ω shape in front view forming the holding mechanism 7, that is, a shape in which the upper end and the lower end are thin and the central part is thick. . The pin 19
Forms a safety mechanism 8 with a guide member 23 of the drawer 3 which will be described later, and moves up and down by the guide member 23. As shown in FIG. 2, the locking member 20 formed at a position separated from the pin 19 by a predetermined distance is formed on the front and rear side surfaces facing the elevating member 6 in a plan view in accordance with the thickness of the latch claw 9. It has a notch 24 that is cut out in a quarter arc shape. The engaging member 21 includes a horizontal plate 25, an engaging piece 26 projecting from a central portion of an upper surface of the horizontal plate 25, and a side wall 28 extending upward from one side surface of the horizontal plate 25 and having a long hole 27 in the central portion thereof. Horizontal plate 2
5 is made of a synthetic resin integrally formed with the hanging pieces 29 formed at the front end and the rear end of 5, and is fixed to the upper end of the elevating member 6 with the outer surface of the hanging piece 29 being in close contact with the inner wall of the elevating member 6. ing.

A holding member 30 forming a holding mechanism 7 is fixedly installed above the elevating member 6 arranged in the furniture main body 2. The holding member 30, which is a box made of synthetic resin and has an opening on the lower side, has the engaging piece 2 of the engaging member 21 at the opening on the lower surface.
When 6 is inserted over a predetermined length, the engaging member 21 is held by the side wall 31, and as a result, the elevating member 6 is held at a predetermined raised position. The holding member 30 is formed so that an elastic force is generated in the central portion of the side wall 31 by providing a slit 32 in the side wall 31, and the engaging piece 26 is held by the elastic force. .

The lock mechanism 11 utilizes a lock main body 34 in which the operating rod 33 is projected and retracted in a predetermined direction by locking / unlocking operations, and utilizing the projecting action of the operating rod 33, the elevating member 6 is in front of a predetermined raised position. And a motion transmitting element 35 for transmitting the motion of the operating rod 33 to the elevating member 6 so as to engage the locking member 20 with each latch claw 9, and The lifting member 6 can be lowered by its own weight when the lifting force is deenergized. More specifically, as shown in FIG. 4, the lock main body 34 includes a cylinder lock 17 having a key hole 36, and an operating rod which is vertically retracted by inserting and locking a lock (not shown) in the key hole 36. And 34. The motion transmission element 35 is
A rod 38 having a crank portion 37, and a part of the lower edge supported by the rod 38, one end of which is inserted into the slot 27 of the engaging member 21 so that the top edge of the slot 27 abuts on the upper surface of the slot 27. Arm 39. One end of the rod 38 extends horizontally to above the operating rod 34, the other end thereof extends upward, and is lightly biased downward by a spring 40 to project the operating rod 34. When one end is urged upward by the operation, the crank portion 37 rotates about an axis,
The arm 39 is moved upward.

As shown in FIG. 3, each drawer 3 is provided with a bottom plate 41, left and right side plates 42, a back plate (not shown) and a mirror plate 43. The furniture main body 2 and the drawer 3 are provided.
A latch mechanism 10 is provided between the two side plates, and a latch claw 9 that swings in the left-right direction is attached to one of the side plates 42 by a manual operation with the back side of the end plate 43 as a fulcrum. Further, as shown in FIGS. 3 and 5, a first inclined surface 44 that rises rearward and then descends is provided on one outer side portion 47 of the side plate 42 of each drawer 3 and faces the upper side of the first inclined surface 44. The guide member 23 having a second inclined surface 45 that is formed as a surface and that rises rearward is fixed. Further, when the drawer 3 is at the most retracted position, the latch engagement members 46 are fixed to the portions of the furniture main body 2 that are engaged with the latch claws 9, respectively. Further, the end plate 43 is formed with a recess 48 so that a hand can be put from below, and a handle (not shown) is provided inside thereof. This handle swings in the front-rear direction, and normally the latch claw 9 is urged in a direction to engage with the latch engagement member 46. It is configured to move the latch claw 9 in a direction to release the engagement with the latch engagement member 46 via the motion conversion means.

The latch mechanism 10 is composed of a latch claw 9 pivotally attached to each drawer 3 and a latch engagement member 46 provided at a predetermined portion of the furniture main body 2. The latch claw 9 is a plate body having a window 49 capable of engaging with the latch engagement member 46 in the center, and one end of the latch claw 9 is pivotally attached to the rear surface of the end plate 43 of the drawer 3 to draw out the drawer 3.
Is urged away from the side plate 42. The latch engagement member 46 has an inclined surface 50 that gradually approaches the drawer 3 toward the rear, and an engagement surface 51 that is formed vertically from the highest position of the inclined surface 50 toward the left side plate 4 of the furniture body 2. As shown in FIG. 2, it is made of a synthetic resin and is arranged near the front of the elevating member 6 arranged on the inner side portion 5 of the left side plate 4 of the furniture main body 2. Then, when the drawer 3 approaches the most retracted position, the latch claw 9 moves the latch engagement member 46.
Of the latch claw 9 is engaged with the engaging surface 51 of the latch engaging member 46 when the drawer 3 reaches the final retracted position by being guided by the inclined surface 50 of the latch 3 and temporarily retracted to the drawer 3 side. Then, the drawer 3 is held at the most retracted position.

With such a structure, in order to pull out the drawer 3 to the front, the handle of the desired drawer 3 is rotated manually. Then, the motion transmitting means causes the latch claw 9 to rotate in the direction away from the left side plate 4 of the furniture main body 2 to release the engagement between the window 49 and the engagement surface 51, and in that state, the desired drawer 3 Pull forward. By this forward movement of the drawer, the pin 19 provided on the elevating member 6 arranged to be able to ascend and descend on the inner side portion 5 of the furniture body 2 is shown in FIG.
As shown in, the guide member 23 slides on the first inclined surface 44 that rises in the rearward direction and moves upward. Along with that, the elevating member 6 moves upward. The moving distance of the elevating member 6 at this time is equal to the height difference from the upper end to the lower end of the first inclined surface 44 of the guide member 23, and when the elevating member 6 rises by this distance, it is fixed to the upper end of the elevating member 6. The engaging piece 26 of the engaging member 21 is held by the side wall 31 of the holding member 30 and engages with the holding member 30, so that the elevating member 6 is held at a predetermined raised position. At this time, as shown in FIG. 7, the locking member 20 attached to the elevating member 6 also moves upward, and the locking member 20 is respectively attached to the latch claws 9 of the drawer 3 pushed into the retracted position. Engage. Therefore, the notch 24 of the locking member 20 comes into contact with the latch claw 9, and the latch claw 9 is prohibited from rotating in the direction away from the left side plate 4 of the furniture main body 2. You will not be able to pull out the other drawer 3 in.

Further, when the drawer 3 being pulled out is pushed into the furniture main body 2, the pin 19 provided on the elevating member 6 is pushed by the force of pushing the drawer 3 into place.
As shown in (b), the guide member 23 arranged on the outer side portion 47 of the drawer 3 slides on the second inclined surface 45 and moves downward, so that the lifting member 6 held at the predetermined rising position is moved. The hold is released. Therefore, the elevating member 6 descends, and the latch claw 9 that has been prohibited from being operated to the latch release position by the locking member 20 attached to the elevating member 6 is released from the inhibition, as shown in FIG. The latch is ready for release, as shown in FIG.

Further, when locking, the key hole 36 of the cylinder lock 16 is rotated to cause the operating rod 33 to project upward. Then, due to this projecting operation, the rod body 38 of the motion transmitting element 35 rotates in the urging direction and lifts the arm 39, and the arm 39 lifts the elevating member 6 to the position before the predetermined rising position. As a result, the locking member 20 engages with each latch claw 9, as shown in FIG. Therefore, the drawer 3 cannot be pulled out and is locked. In addition, to unlock, 1 cylinder lock
The key hole 36 of 6 is rotated to immerse the operating rod 33. When the operating rod 33 is retracted in this way, the lifting force thereof is depressed, the lifting member 6 descends by its own weight, and the locking member 20 attached to the lifting member 6 operates to the latch release position. The latch claw 9 which has been prohibited is released from the prohibition, and the latch is in a releasable state, that is, unlocked, as shown in FIG.

With such a structure, the drawer 3
When the drawer 3 is pulled out, the safety mechanism 8 operates the elevating member 6 and the holding mechanism 7 to cause the latch mechanism 10 to function, prohibiting the movement of the drawer 3 in the furniture main body 2, and similarly when locked. The lock mechanism 11 operates the elevating member 6 to cause the latch mechanism 10 to function and prohibit the opening of the drawer 3. Therefore, the number of parts is much smaller than in the case where each mechanism is provided independently. It becomes possible. Further, since the number of parts is small, the labor and time required for manufacturing and assembling the parts can be reduced, and therefore the manufacturing cost can be reduced.

The present invention is not limited to the illustrated embodiments described above, and may be applied to, for example, a sleeve part of a desk or a wagon, within a range not departing from the gist of the present invention. Various modifications are possible.

[0027]

As described in detail above, according to the present invention, since the safety mechanism and the lock mechanism are configured so that the lifting member and the latch mechanism are used in common, the respective mechanisms are provided independently. The number of parts can be far reduced compared to the case where Further, since the number of parts is small, the labor and time required for manufacturing and assembling parts can be reduced, and the manufacturing cost can be reduced accordingly.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view showing the furniture body of the embodiment.

FIG. 3 is a perspective view showing a state in which the drawer of the embodiment is pulled out.

FIG. 4 is an explanatory view of the operation of the lock mechanism in the same embodiment.

FIG. 5 is a schematic diagram for explaining the operation of the safety mechanism in the embodiment.

FIG. 6 is an operation explanatory view of the embodiment.

FIG. 7 is an operation explanatory view of the embodiment.

FIG. 8 is an operation explanatory view of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Storage furniture 2 ... Furniture body 3 ... Drawer 4 ... Side plate 5 ... Inner part 6 ... Elevating member 7 ... Holding mechanism 8 ... Safety mechanism 9 ... Latch claw 10 ... Latch mechanism 11 ... Lock mechanism 33 ... Operating rod 34 ... Lock body 35 ... Motion transmission element

Claims (2)

(57) [Claims] 1. A drawer in which a latch mechanism is provided between a housing and a plurality of drawers, and a desired drawer can be pulled out forward by manually operating a latch claw to a latch release position. In the apparatus, an elevating member arranged to be able to ascend and descend inside a housing, a holding mechanism that holds the elevating member at that position when the elevating member is raised to a predetermined rising position, and a forward movement of a drawer are used. Then, the elevating member is raised to a predetermined elevated position and the retracting action of the drawer is utilized to release the elevating member from the holding state by the holding mechanism and lower it, and when the elevating member is raised, it is pushed into the retracted position. A locking member that engages with the latch claw of each drawer and prohibits the latch claw from operating to the latch release position; and the elevating member in response to a locking / unlocking operation. Extraction apparatus characterized by comprising; and a locking mechanism for lifting a. 2. A lock mechanism, a lock main body in which an operating rod is projected and retracted in a predetermined direction by locking and unlocking operations, and a lifting operation of the operating rod is used to lift an elevating member to a position before a predetermined rising position. And a motion transmitting element for transmitting the motion of the operating rod to the elevating member in order to engage the locking member with each latch claw, and when the lifting force of the operating rod is canceled by the retracting action of the operating rod, The drawer device according to claim 1, wherein the elevating member is configured to be able to descend by its own weight.