JP3040937B2 - Stopper device in drawer suspension - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stopper device for a drawer suspension provided on furniture such as a file cabinet.

[0002]

2. Description of the Related Art Conventionally, a longitudinal main body rail is fixed in a furniture main body, an intermediate rail is mounted on the main body rail so as to be movable back and forth, and a drawer is mounted on the intermediate rail. 2. Description of the Related Art A drawer suspension having a configuration in which a drawer rail protruding from a side surface is mounted so as to be movable back and forth is known.

According to Japanese Utility Model Publication No. Sho 59-2113, a rotator at an upper rear end of an intermediate rail rolls in an upper fitting groove of a main body rail having a U-shaped cross section, and is provided in a middle of the intermediate rail. The trochanter rolls into the lower fitting groove of the main body rail, and the drawer rail is sandwiched between the upper surface of the front trochanter provided below the front end of the intermediate rail and the lower surface of the floating rotator of the intermediate rail. A suspension configured to roll to support the load of the drawer during the longitudinal movement of the drawer is disclosed. In this type of drawer suspension, as a configuration for restricting the drawer from being pulled out more than necessary from the furniture main body, in the prior art, a front and rear longitudinal fitting hole is formed in a body plate portion of a main body rail having a U-shaped cross section. And an abutment piece provided at the front end thereof is brought into contact with a rear stopper piece formed by bending outwardly on the back plate portion of the intermediate rail, and is pivoted up and down on the front end of the back plate portion of the intermediate rail. There has been proposed a configuration in which a front stopper is provided, and when the rear end side of the front stopper is in a downward state due to its own weight, it comes into contact with an engagement piece projecting outward on the side surface of the drawer.

[0004]

However, in such a configuration, it is necessary to separately fix the engaging piece to the drawer, which increases the number of manufacturing steps and the number of parts and increases the cost. There's a problem. In addition, since the engaging piece projects outward from the side surface of the drawer, when the drawer is pulled out largely from the furniture body, the engaging piece is visible and the appearance of the drawer side surface is not good.

Further, when extracting the drawer from the furniture body, or conversely, when incorporating the extracted drawer into the suspension, it is necessary to pass the engaging piece so as not to collide with the lower surface of the front stopper. For this purpose, the front stopper must be kept substantially horizontal. On the other hand, in order to prevent the drawer from twisting left and right, it is normal that the front stopper and the engagement piece are arranged on both left and right sides of the drawer, and the intermediate rail is easy to move back and forth, so one person's work The work of inserting the drawer rails on the left and right sides of the drawer between the upper surface of the front trochanter in the intermediate rail and the floating rotator of the intermediate rail while holding the front stoppers on the left and right sides horizontally by only the user is extremely possible. There was a problem that it was difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve these problems of the prior art, and provides a stopper device for a drawer suspension which is improved in appearance, has a simple structure, and is easy to handle. The purpose is to do so.

[0007]

According to one aspect of the present invention, there is provided an intermediate rail between a main body rail and a drawer rail fixed to a side surface of a drawer, the intermediate rail being movable in the front-rear direction. In the drawer suspension, the intermediate rail is provided with at least a front trochanter and a lower support piece behind the front trochanter, and a lower support piece and a horizontal plate portion of the drawer rail are provided at a position rearward of the front trochanter. A front stopper body is rotatably provided in between, and a kick claw provided on the drawer rail during the forward movement interferes with an engagement protrusion projecting sideways on the front stopper body, so that the front stopper body is lowered. It is configured to stand up against the support piece and fit into a stopper hole formed in the horizontal plate of the drawer rail.

According to a second aspect of the present invention, in the stopper device for the drawer suspension according to the first aspect,
The front stopper body is formed in a substantially triangular shape when viewed from the side, and is mounted rotatably so that its long side faces the lower surface side of the horizontal plate part of the drawer rail and its two short sides face the lower support piece. And
The kicking claw provided on the drawer rail during the forward movement interferes with the engaging protrusion protruding laterally from the front stopper body, and the rear short side of the front stopper body rises and is drilled in the horizontal plate part of the drawer rail. It is configured to fit into the stopper hole.

According to a third aspect of the present invention, in the stopper device of the drawer suspension according to the first or second aspect, when the drawer rail is inserted into the intermediate rail with its rear end inclined downward. A vertical gap is formed between the engagement projection of the partial stopper body and the kick nail on the drawer rail side.

[0010]

Next, embodiments of the present invention will be described. FIG. 1 is a partially cutaway side view of the drawer suspension of the present invention in which the intermediate rail and the drawer rail are fully drawn out with respect to the main body rail, FIG. 2 is a perspective view of an idler and its guiding means, and FIG. FIG. 4 is a perspective view of a main part of the front stopper body and the intermediate rail, respectively.

The drawer suspension is a box-shaped main body (not shown) having an open front surface of a file cabinet made of a thin metal plate.
And a drawer rail 3 fixed to the outer surface of the side plate 4 of the drawer, and an intermediate rail 5 movably inserted between the main body rail 1 and the drawer rail 3. Have been. The main body rail 1 having a U-shaped cross section is configured by bending a laterally L-shaped upper guide plate 1b at an upper end of a longitudinal plate 1a extending in the front-rear direction and a substantially horizontal lower guide plate 1c at a lower end of the vertical plate 1a. ing. In addition, a protruding rib 1d having a substantially mountain-shaped cross section in a longitudinal direction is formed on a free end edge of the lower guide plate 1c.

The intermediate rail 5 has a substantially U-shaped cross section.
The back plate 5a is close to and opposes the vertical plate 1a on the main body rail 1. At the upper end and the lower end of the back plate 5, a laterally L-shaped upper support piece 5b and a lower support piece 5c are provided to be bent. A rear trochanter 6 that rolls by contacting the lower surface of the upper guide plate 1b of the main body rail 1 is supported on the upper rear end of the back plate 5a of the intermediate rail 5, and is supported by the front end of the intermediate rail 5. The front trochanter 7 and the plurality of intermediate trochanters 8 pivotally supported at an intermediate position can rollably contact the lower guide plate 1c of the main body rail 1 as the intermediate rail 5 moves back and forth. .

A locking member 9 made of synthetic resin fixed to the rear portion of the upper support piece 5b of the intermediate rail 5 abuts on a stopper portion 10 which is formed to bulge downward in the front and rear halfway of the upper guide plate 1b of the main body rail 1. In this state, the intermediate rail 5 is positioned such that its rear half is located within the front half of the main body rail 1, and excessive pulling-out is restricted. Further, when the locking member 11 made of synthetic resin fixed to the rear end of the lower support piece 5c of the intermediate rail 5 abuts on the upward locking portion 12 of the rear end of the lower guide plate 1c of the main rail 1, As described above, the intermediate rail 5 is restricted so as not to be pushed into the body rail 1 in the depth direction.

On the inner surface side of the back plate 5a of the intermediate rail 5, a pair of front and rear cut-and-raised support pieces 13, 13 is provided in the middle of the front and rear thereof.
The front and rear end portions of a rod-shaped guide rod 15 also made of synthetic resin or the like are inserted and arranged in the concave holes of the connection bodies 14 made of synthetic resin or the like which are detachably fitted into the mounting holes 3 and 13 (FIG. 2). On the upper surface of the guide rod 15, a shaft portion 17 of the floating rotator 16 that protrudes horizontally on one side is rotatably guided. The floating roller 16 rolls while being in contact with and sandwiched between a horizontal plate portion 3a of the drawer rail 3 and an upper support piece 5b of the intermediate rail 5, which will be described later. Can be transmitted to the main body rail 1 via the

The guide rod 15 may be made of synthetic resin such as nylon, glass fiber reinforced plastics, or steel wire such as piano wire. Guide rod 1
A known configuration disclosed in Japanese Utility Model Publication No. 4-5991 can be adopted as a connection configuration between the connector 5 and the connector 14. Next, the configuration of a stopper device that regulates the front movement of the drawer rail 3 with respect to the intermediate rail 5 will be described with reference to FIGS.

As shown in FIG. 4, the drawer rail 3 includes a front and rear longitudinal plate portion 3a, an upward vertical plate portion 3b fixed to the outer surface of the side plate 4 of the drawer by spot welding or the like, and a back plate 5a of the intermediate rail 5. And the downward vertical plate portion 3c close to
The cross section is formed in a substantially S-shape. The lower support piece 5c and the drawer rail 3 of the intermediate rail 5 are located behind the front trochanter 7 on the intermediate rail 5 and forward of the front end support piece 13 of the guide rod 15 with respect to the floating trochanter 16.
The front stopper body 18, which is rotatable so that the posture can be changed between a prone position with a low vertical height and a standing position with a high height, between the horizontal plate portion 3 a and the back plate 5 a. The support piece 5 is provided via a pin shaft 19 fixed to the rising piece 5d.

The specific shape of the front stopper body 18 is, as shown in FIGS. 4 and 5, a substantially isosceles triangle or a right triangle in which the included angle of two short sides is substantially a right angle in a side view. In a state where the long side 18a is substantially parallel to the lower surface of the horizontal plate portion 3a of the drawer rail 3, the front stopper body 18 is in the prone position with a low height, and the rear short side 18b is in the drawer. When the vehicle stands in a posture that rises substantially at right angles to the horizontal plate portion 3a of the rail 3, the vehicle stands in a high standing posture. In this standing posture, the other (front side) short side 18c of the front stopper body 18 is in contact with the upper surface of the lower support piece 5c.

On one side surface of the front stopper 18, an engagement protrusion 20 is provided laterally so as to protrude from the outer surface of the rising piece 5 d of the intermediate rail 5. In the upright posture, it fits into the groove 21 formed by notching the rising piece 5d. Further, when the front stopper body 18 is in the prone position, the notch portion 22 with which the long side 18a contacts is formed in the rising piece 5d,
A substantially arc-shaped guide portion 2 is provided on the base side of the front stopper body 18.
3 is recessed. In addition, the front stopper body 1 in the standing posture
The base 18e on the other side of the base plate 8 is set to a height such that the horizontal plate 3a of the drawer rail 3 can pass through the upper surface thereof. Further, the front stopper 18 may be formed of a rigid synthetic resin material or a metal material.

On the other hand, the horizontal plate portion 3a of the drawer rail 3
A stopper hole 24 is formed so as to be deviated to the side close to the upward vertical plate portion 3b, and the kick claw 25 protrudes downward adjacent to the stopper hole 24. In the drawer suspension configured as described above, with the drawer pushed into the furniture main body, the intermediate rail 5 has the front trochanter 7 and the intermediate trochanters 8, 8 fixed to the side plate 2 of the furniture main body. The horizontal plate portion 3a of the drawer rail 3 is supported by the front trochanter 7 and the intermediate trochanters 8, 8 of the intermediate rail 5 in contact with the lower guide plate 1c of the main body rail 1.

As the end plate 4a of the drawer is pulled out from this state in the forward direction (in the direction of arrow A), even if the center of gravity is applied to the front side of the drawer, the floating rotator 16 is supported by the upper support piece 5b of the intermediate rail 5.
And the horizontal plate portion 3a of the drawer rail 3 is sandwiched at the rear side of the drawer rail 3, so that the horizontal plate portion 3a of the drawer rail 3 is maintained in a substantially horizontal state, and Each child 16 rotates and the drawer rail 3 becomes the intermediate rail 5
, And the intermediate rail 5 moves forward with respect to the main body rail 1.

Then, as shown in FIG.
While the kicking claw 25 moves forward (in the direction of the arrow A in FIG. 8), the front stopper body 18 is raised by interfering with the engagement protrusion 20 of the front stopper body 18 in the prone posture. Rotate to stand up. When the upper portion of the rear short side 18b of the front stopper body 18 that rises and pivots in this manner projects above the stopper hole 24 of the drawer rail 3 and collides with the rear edge 24a of the stopper hole 24, FIG. As shown, the drawer rail 3 is further restricted from moving forward. In this state, the kick claw 25 is located forward of the front stopper 18.

Conversely, when the drawer is pushed in the furniture body inward direction (arrow B direction), the long side 18a of the front stopper body 18 which can be placed in the upright posture is pushed by the front edge of the stopper hole 24 (FIG. 8-2). (Refer to the dotted chain line) Falling backward, prone posture with low height (long side 18a is almost parallel to horizontal plate portion 18a)
As a result, the front stopper body 18 comes out of the stopper hole 24, so that the drawer rail 3 can be pushed backward.

In order to completely pull out the drawer from the furniture body, that is, to pull out the rear end of the drawer rail 3 completely from the front end of the intermediate rail 5, the end plate 4a side of the drawer is raised and the drawer is raised. The drawer rail 3 may be pulled upward with its front part inclined upward so that the front stopper body 18 of the drawer rail comes out of the stopper hole 24. Conversely, when inserting the rear edge portion of the horizontal plate portion 3a of the drawer rail 3 into the front end portion of the intermediate rail 5, the lower support piece 5c is placed so that the rear edge portion of the horizontal plate portion 3a faces downward. When the front stopper 18 is in the upright position, even if the front stopper body 18 is in the upright state, the front long side 18a is pushed by the rear edge portion of the horizontal plate portion 3a so that the front stopper 18 is in a prone posture with a low height. The body 18 rotates backward. When the drawer rail 3 is inserted into the intermediate rail 5 with its rear end inclined downward, an appropriate vertical clearance is provided between the engagement projection 20 of the front stopper body 18 in the prone position and the kick claw 25 of the drawer rail 3. Is formed, the drawer rail 3 can be smoothly inserted into the intermediate rail 5.

In the present invention, the guide structure for the forward and backward movement of the intermediate rail with respect to the main rail and the guide structure for the forward and backward movement of the drawer rail with respect to the intermediate rail are not limited to the above-described embodiments unless departing from the gist of the invention. Never.

[0025]

As described in detail above, according to the first aspect of the present invention, an intermediate rail movable in the front-rear direction is inserted between a main body rail and a drawer rail fixed to a side surface of the drawer. In the drawer suspension, the intermediate rail is provided with at least a front trochanter and a lower support piece behind the front trochanter, and a front supporter is provided between the lower support piece and the horizontal plate part of the drawer rail at a position behind the front trochanter. The stopper member is provided rotatably, and the kick claw provided on the drawer rail moving forward interferes with the engaging protrusion protruding laterally on the front stopper member, so that the front stopper member is attached to the lower support piece. The drawer rail is configured to be brought into contact with the stand and to be fitted into a stopper hole formed in the horizontal plate portion of the drawer rail.

According to this structure, the drawer rail is fixed to the outer surface of the side plate of the drawer in the front and rear direction, and there is no need to provide a separate locking part as in the prior art. , The production cost can be greatly reduced, and the appearance of the side surface in a state where the drawer is largely drawn can be improved.

[0027] The invention described in claim 2 is the same as that in claim 1.
In the stopper device in the drawer suspension according to the above, the front stopper body is formed in a substantially triangular shape in side view,
The kick claw provided on the drawer rail being moved forward is mounted so that its long side faces the lower surface side of the horizontal plate portion of the drawer rail and the two short sides face the lower support piece. The rear short side of the front stopper body rises by interfering with the engagement protrusion projecting laterally from the front stopper body, and is fitted to a stopper hole formed in the horizontal plate portion of the drawer rail. is there.

If the front stopper body is formed in a substantially triangular shape when viewed from the side, it is possible to achieve a high standing posture and a low prone posture while the rotation angle of the front stopper body is small. And the height difference can be increased, so that the kick claw and the engagement protrusion of the front stopper body can be interfered with each other in a state where the distance of the front movement of the drawer rail is shortened. The effect that the selection of non-interference can be easily set can be obtained in addition to the effect obtained by the first aspect of the present invention.

Further, there is an effect that the height of the intermediate rail and, consequently, the height of the drawer suspension as a whole can be reduced so that it can be made compact. Further, the invention according to claim 3 is the stopper device in the drawer suspension according to claim 1 or 2, wherein when the drawer rail is inserted into the intermediate rail with its rear end inclined downward. A vertical gap is formed between the engagement projection of the stopper body and the kick claw on the drawer rail side.

With this configuration, even if the drawer rail is pushed in a slightly downward state, interference between the kick claw on the drawer rail and the engagement protrusion of the front stopper body on the intermediate rail is eliminated, and the drawer rail is extremely easily constructed. As a result, the operation of inserting the drawer rail into the front end side of the intermediate rail can be performed.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a drawer suspension.

FIG. 2 is a partially cutaway perspective view of an idler and its guide rod.

FIG. 3 is an enlarged side view of the rear part of the drawer suspension.

FIG. 4 is a perspective view of a main part of a front stopper body and a drawer rail.

FIG. 5 is a perspective view clearly showing a main part of one side surface of a front stopper body.

FIG. 6 is an enlarged side view of a front portion of the intermediate rail.

FIG. 7 is an enlarged sectional view taken along line VII-VII of FIG. 6;

FIG. 8 is a side view showing the operation of the front stopper body.

FIG. 9 is an enlarged sectional view taken on line IX-IX of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body rail 3 Drawer rail 5 Intermediate rail 5c Lower support piece 6 Rear trochanter 7 Front trochanter 8 Intermediate trowel 16 Floating trochanter 18 Front stopper body 18a Long side 18b, 18c Short side 20 Engagement projection 24 Stopper hole 25 kicking claws

Claims (3)

(57) [Claims] 1. A drawer suspension in which an intermediate rail movable in the front-rear direction is inserted between a main body rail and a drawer rail fixed to a side surface of the drawer, wherein the intermediate rail has at least a front trochanter and A rear stopper is provided at the rear of the front trochanter, and a front stopper body is rotatably provided between the lower support and the horizontal plate portion of the drawer rail. A stopper provided in the horizontal plate portion of the drawer rail stands by the kicking claw provided interfering with an engagement protrusion protruding laterally from the front stopper body, the front stopper body abutting on the lower support piece and standing upright. A stopper device for a drawer suspension, wherein the stopper device is configured to be fitted in a hole. 2. The front stopper body is formed in a substantially triangular shape in a side view, with its long side facing the lower surface side of the horizontal plate portion of the drawer rail, and two short sides facing the lower support piece. The kick claw provided on the drawer rail moving forward is interfered with the engaging protrusion protruding laterally on the front stopper body, and the rear short side of the front stopper body rises to draw the drawer rail. The stopper device for a drawer suspension according to claim 1, wherein the stopper device is configured to fit into a stopper hole formed in the horizontal plate portion. 3. When the drawer rail is inserted into the intermediate rail with its rear end inclined downward, a vertical gap is formed between the engaging projection of the front stopper body and the kick claw on the drawer rail side. The stopper device in the drawer suspension according to claim 1, wherein the stopper device is configured as described above.