JPH10225333A - Suspension device for drawer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To support a drawer so that it can move smoothly and easily without applying strong braking force on the drawer rails. SOLUTION: An upper roller 14 is mounted on a slidable middle rail 9 inserted between a fixed rail 7 fixed on the wall of a drawer box and drawer rails fixed on the outer surfaces of the right and left sides of the drawer. The upper roller 14 is to support the upper surface of the rear end side of a horizontal rail part 12 of the drawer rails when the drawer is largely drawn out. A clasping roller 15 to support the rear surface of the horizontal rail part 12 under the upper roller 14 and a support roller 16 behind the clasping roller 15 supported by the front end of the rear surface of the fixed rail 7 are rotatably attached to a support lever 17. Slanting grooves 21 and 22 are formed at the front and rear ends of the support lever 17 so that the height of the grooves is lower at the front of the drawer and higher toward the rear. The support lever 17 can be moved up/down almost levelly by means of pins 23 and 24 attached in the middle rail 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a drawer suspension device for enabling a drawer to be drawn out largely to a cabinet body or the like.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Publication No. Sho 42-14659 discloses a suspension device for supporting a drawer so that the rear end thereof can be slid forward and backward so that the rear end thereof can be pulled forward from the front surface of the cabinet body. A drawer suspension device comprising a fixed rail fixed to the inner surfaces of the left and right side walls, a drawer rail fixed to the left and right outer surfaces of the drawer, and an intermediate rail slidable between the fixed rail and the drawer rail. In the middle rail, the rear end of the drawer projects forward from the front surface of the cabinet body, and contacts the upper fixed roller and the upper rail of the fixed rail, which contact the upper surface of the horizontal portion of the drawer rail. And a rear fixed roller.

[0003] Then, the rear guide wheel abutting on the lower rail portion side of the fixed rail and the front guide wheel abutting on the lower surface of the horizontal portion of the drawer rail are vertically bent at an intermediate position in the front-rear direction. The pair of front and rear links are rotatably supported on a pair of front and rear links, and front and rear ends of the pair of front and rear links are provided with longitudinal guide grooves in the front and rear horizontal direction, and intermediate through the respective guide grooves. A configuration in which a rail is connected to a pin is disclosed.

Further, there is disclosed a synchronous drive mechanism in which the side surfaces of a pair of front and rear guide cars are connected to each other by a crank, and the rotational force of one guide car is transmitted to the other guide car.

[0005]

According to these configurations, when the rear end of the drawer is pulled out from the front of the cabinet body to the front, the horizontal portion of the drawer rail is supported by the support roller provided at the front end of the intermediate rail. Support the lower surface in the middle of the front and back. On the other hand, the fixed roller at the rear end of the intermediate rail abuts on the upper rail portion of the fixed rail, while the rear guide wheel on the intermediate rail abuts on the front end side of the lower rail portion of the fixed rail. It is moving forward from the end of the fixed rail.

In this state, an upward reaction force is applied to the rear guide vehicle from the fixed rail side by the moment due to the load of the drawer, and the front side of the rear link rotates upward about the pin at the rear end. The front link, which is flexibly connected to the rear link, pivots upward about the pin at the front end thereof, so that the front guide wheel pivotally supported by the front link pushes up the horizontal portion of the drawer rail. , With a fixed pressure.

Therefore, the greater the amount of forward movement of the drawer, the greater the clamping force. Then, the pinching force is too strong, and the drawer rail is stopped so that it cannot move back and forth, so that there is a problem that the drawer rail cannot be moved back and forth lightly. Also,
With the configuration in which the side surfaces of the front and rear guide wheels are connected by a crank, in order to synchronously drive the two guide wheels, it is necessary to prevent the deflection such that the pair of front and rear links bend, and There was also a problem that it was inconsistent with the mechanism of pinching force generation. Furthermore, there were many components, and there was also a problem that assembly and manufacturing costs became high.

It is an object of the present invention to provide a drawer suspension apparatus which solves the above-mentioned problems of the prior art.

[0009]

According to one aspect of the present invention, there is provided a suspension apparatus for a drawer, comprising: a fixed rail fixed to a fixed wall of a box body such as a cabinet; A drawer rail fixed to the drawer rail and an intermediate rail slidable between the fixed rail and the drawer rail, wherein the intermediate rail has a fixed rail at a position where the drawer is largely drawn out. A rear roller contacting the upper side of the drawer rail, a front end roller supporting a lower surface of a front side portion of the horizontal rail portion in the drawer rail, and an upper roller supporting an upper surface of a rear end side of the horizontal rail portion. A support lever that supports a holding roller that supports the lower surface of the horizontal rail portion on the lower surface side of the roller and a support roller that is supported on the lower side of the fixed rail behind the holding roller. Rotatably mounted, the support lever, via the inclined guide means capable of changing the height position in the longitudinal direction of the drawer relative to the middle rail, in which a structure linked to the intermediate rail.

[0010] The invention described in claim 2 is the same as the claim 1.
In the suspension device for a drawer described in the above, the inclined guide means is constituted by at least a pair of front and rear inclined grooves of front upward inclination or rear upward inclination of the drawer, and a pin connected to the intermediate rail through both front and rear inclined grooves. Each of the inclined slots is formed at one of the front and rear ends of the support lever or at one of the intermediate rails, and the pin is provided at the other end.

According to a third aspect of the present invention, in the suspension device for a drawer according to the first or second aspect, the supporting lever is provided with an idle gear between the holding roller and the supporting roller. It is rotatably mounted, and the holding roller and the supporting roller are provided with gear portions that respectively mesh with the idle gear. And the invention according to claim 4 is:
In the suspension device for a drawer according to claim 1 or 2, the holding roller and the supporting roller are configured to rotate in conjunction with each other via an endless belt.

[0012]

Next, embodiments of the present invention will be described. FIG. 1 is a partially cutaway perspective view of a cabinet, and FIG. 2 is a schematic front view of a right suspension device. As shown in FIG. 1, a drawer 3 with a mirror plate 4 is disposed so as to be movable back and forth through a pair of left and right suspension devices 5 with respect to a box 1 made of a thin metal plate and having an open front surface in a cabinet. .

Since the suspension device 5 has a symmetrical shape, as shown in FIG. 2, the suspension device 5 is disposed between the right outer surface of the box-shaped storage section 6 of the drawer 3 and the right side of the box 1. The description will be made with representative portions. The right suspension device 5 has a U-shaped fixed rail 7 fixed to the side wall (fixed wall) of the box 2 and a substantially L-shaped cross section fixed to the right outer surface of the storage part 6 of the drawer 3 by spot welding or the like. A drawer rail 8 having a substantially U-shaped cross section, which is slidable by being inserted between the fixed rail 7 and the drawer rail 8. Fixed rail 7, drawer rail 8, and intermediate rail 9
Have approximately the same length.

At the rear end on the upper side of the intermediate rail 9, there is provided a rear roller 10 which can rotate while being in contact with an upper surface plate 7 a as an upper side of the fixed rail 7. An intermediate roller 1 that can rotate while contacting a lower surface plate 7b as a lower side of the fixed rail 7 is provided in the intermediate portion.
One. The front end of the intermediate rail 9 is provided with a front end roller 13 that supports the lower surface of the horizontal rail portion 12 of the drawer rail 8, while the front and rear halfway of the intermediate rail 9 (at a position forward of the arrangement position of the intermediate roller 11). , At a position rearward of the front end roller 13), an upper roller 14 for supporting the upper surface of the horizontal rail portion 12 is provided.

Therefore, at the position where the drawer 3 is largely pulled out, the lower surface of the front side of the horizontal rail portion 12 of the drawer rail 8 is supported by the front end roller 13 and the upper roller 14 is supported.
Supports the upper surface on the rear end side of the horizontal rail portion 12. Also, a holding roller 15 for supporting the lower surface of the horizontal rail portion 12 on the lower surface side of the upper roller 14, and a lower plate 7 b of the fixed rail 7 behind the holding roller 15.
The supporting roller 16 supported on the front end side of the
To be rotatable.

A configuration is adopted in which the support lever 17 is connected to the intermediate rail 9 via inclined guide means 19 capable of changing the height position of the drawer 3 in the front-rear direction with respect to the intermediate rail 9. The first embodiment is shown in FIGS. 5 and 6 and has a configuration in which the front and rear ends of the support lever 17 are connected via inclined guide means 19 which becomes lower at the front side of the drawer 3 and becomes higher toward the rear side. It is.

The structure of the tilt guide means 19 will be described in more detail. In the embodiment shown in FIGS. 5 and 6, the front and rear end portions of the support lever 17 are provided with a tilt guide slot 21 at a front position and a rear position at a rear position. Is formed. The two inclined guide slots 21 and 22 are formed so as to be inclined so as to become higher toward the rear at a lower position on the front side of the drawer 3 with respect to the horizontal line. Each of the guide slots 21 and 22 is slidably supported by round shaft-like pins 23 and 24 protruding laterally from the vertical plate 9a of the intermediate rail 9. At this time, the distal ends of the pins 23 and 24 are made large in diameter so that the support lever 17 does not fall off, and the base ends of the pins 23 and 24 are caulked and fixed to the vertical plate portion 9a (FIG. 6).

On the other hand, a round shaft-shaped pin is projected laterally from the front and rear ends of the support lever 17, while the vertical plate 9a of the intermediate rail 9 has an inclined guide on which the pins can slide. A slot may be provided. The inclination angle θ1 of the inclined groove 21 at the front position with respect to the horizontal is set to be equal to the inclination angle θ2 of the inclined groove 22 at the rear position with respect to the horizontal, or θ2> θ1. Therefore, the setting is made so that the relationship of 90 °> θ2 ≧ θ1> 0 ° is established. Preferably, θ2 = θ1
(= 16 ° to 20 °). Therefore, the support lever 17
Can move up and down obliquely in the front-rear direction while being substantially parallel to the intermediate rail 9.

Further, in this embodiment, an idle gear 25 is rotatably mounted on the support lever 17 between the holding roller 15 and the supporting roller 16, and each of the holding roller 15 and the supporting roller 16 is rotatable. On the side surface, gear portions 26 and 27 that mesh with the idle gear 25 are provided. When the holding roller 15 and the supporting roller 16 are formed of nylon resin or the like, it is preferable that the gear portions 26 and 27 are also integrally formed. When the diameter and the number of teeth of the gear portions 26 and 27 are set to be the same, the holding roller 15 and the supporting roller 1
6 and a synchronous interlocking mechanism (synchro mechanism) having the same rotation speed and rotation direction.

Further, the lower end of the holding roller 15 mounted on the support lever 17 is set to be higher than the lower end of the support roller 16 by H1 (about 2.5 mm in the embodiment). Next, the operation of the above configuration will be described.
As shown in FIG. 2, when the drawer 3 starts to be pulled out of the box 1, the horizontal rail portion 12 of the drawer rail 8 fixed to the outside of the side surface of the drawer 3 includes the front end roller 13, the sandwiching roller 15, and the middle of the intermediate rail 9. While being in contact with the roller 11, it is pulled out in the forward direction (the direction of the arrow P in FIG. 5). At that time, the rotation direction of the holding roller 15 is clockwise in FIG. Since this rotational force is transmitted from the gear portion 26 on the side surface to the gear portion 27 of the support roller 16 via the idle gear 25, the support roller 16 is similarly rotated clockwise in FIG. Will be. Since the support roller 16 rotates while abutting on the lower surface plate 7b of the fixed rail 7, the moving distance of the drawer rail 8 and the moving distance of the intermediate rail 9 are the same. In other words, the drawer rail 8 moves forward at twice the speed at which the intermediate rail 9 moves.

When the number of teeth of the gear portion 27 of the support roller 16 is made larger than the number of teeth of the gear portion 26 of the holding roller 15 (therefore, the gear diameter is also made larger), the number of teeth of the holding roller 15 increases. Since the roller 16 rotates less, the amount of forward and backward movement of the intermediate rail 9 is smaller than the amount of work of the forward and backward movement of the drawer 3, and the drawer 3 having a large storage load can be moved back and forth with a light force. .

As the drawer 3 is pulled out of the box 1, due to the weight of the drawer 3 and the items stored therein,
Since the forward downward moment acts, the moment load pushes the front end roller 13 of the intermediate rail 9 downward through the horizontal rail portion 12 of the drawer rail 8 and the upper roller 14
Press upward. With this force, the intermediate rail 9 moves forward with respect to the fixed rail 7 while receiving a downward moment.

Accordingly, the rear end of the intermediate rail 9 receives a downward reaction force from the upper plate 7a side of the fixed rail 7 via the rear roller 10, and the supporting roller 16 located in the middle of the intermediate rail 9 in the front-rear direction is fixed. 7 receives an upward reaction force from the lower surface plate 7b side. The reaction lever 17
Moves obliquely upward rearward in a substantially parallel manner through the inclined guide slots 21 and 22 at the front and rear positions. Then, the upper end of the holding roller 15 pivotally supported on the front side of the support lever 17 presses the lower surface of the horizontal rail portion 12 upward.

However, as in the prior art, the supporting lever 17 is rotated about the center of rotation of the base end, and the supporting lever 17 is not moved as far as the nipping roller at the free end thereof rises. The ascending distance is shorter when the ascending force is raised in a substantially parallel state. When the inclined guide slots 21 and 22 are set to be lower at the front side of the drawer and higher at the rear side, when the drawer rail 8 is pulled out, the upper end of the sandwiching roller 15 is positioned on the horizontal rail portion. Since the support lever 17 rises so as to press the lower surface of the wedge 12, the wedge function is opposite to the wedge function. Therefore, from this point, the pressure for holding the horizontal rail portion 12 between the upper roller 14 and the holding roller 15 is reduced. It works.

Therefore, the braking force acting on the moving horizontal rail portion 12 is smaller than that of the conventional one, and the holding roller 15 and the supporting roller 16 are connected to the gear portions 26 and 27.
And the idle rotation gear 25, so that the drawer 3 can be pulled out with a light force. Moreover, the clamping roller 15
Since the lower end of the support roller 16 is located at a lower position than the lower end of the support roller 16, the support roller 16 always contacts the intermediate rail 9 and rolls. Only the upper end of 15 is horizontal rail 1
2, the horizontal rail 12 is held between the upper roller 14 and the holding roller 15, so that neither the intermediate rail 9 nor the horizontal rail 12 rattles up and down.

As shown in FIG. 5, when the support roller 16 of the intermediate rail 9 is positioned at the front end of the lower plate 7b of the fixed rail 7, the front side of the support lever 17 is located forward of the front end of the fixed rail 7. In this state, the rear end 12a of the horizontal rail portion 12 of the drawer rail 8 is located slightly behind the upper end of the holding roller 15, and the horizontal rail portion 12 is sandwiched by the upper roller 14 in front thereof. Can be. Therefore, as shown in FIG. 1, the drawer 3 can be pulled out (overhanging) greatly until the rear end of the storage portion 6 of the drawer 3 is slightly forward of the front surface of the box 1.

Further, at the maximum drawing position of the drawer rail 8 with respect to the intermediate rail 9, as shown in FIGS. 2 and 4 (f), a substantially triangular side view pivotally supported at the front side of the intermediate rail 9 so as to be rotatable. The tip of the stopper piece 28 rises and is locked in the locking hole 12b formed in the horizontal rail portion 12, so that further forward movement can be prevented. As shown in FIGS. 3 (c), 4 (d), 4 (e), 5 and 6, the holding roller 15 provided on the support lever 17 which is substantially parallel and moves up and down in an oblique direction. , Support roller 1
6 and the base of the support shaft of the idler gear 25 (usually fixed by caulking) do not interfere with the vertical plate portion 9a of the intermediate rail 9 so that the vertical plate portion 9a and the inclined guide groove holes 21 and 22 are substantially formed. Preferably, a parallel interference avoiding hole 29 is formed.

Then, the front and rear ends of the support lever 17 are
Pins 23 and 2 caulked to vertical plate 9a of intermediate rail 9
4, the support lever 17 as a separate member is attached to the side surface of the vertical plate portion 9a, and the support lever 17 (the holding roller 15 and the support roller 16) is provided.
Therefore, the rigidity of the portion of the intermediate rail 9 where there is no horizontal portion at the lower end can be reinforced.

As shown in FIG. 7, one or both of the sandwiching rollers 15 and the supporting rollers 16 are
By winding the rubber O-ring 30 or coating it with a soft material having a large friction coefficient, the contact force with the metal drawer rail 8 and the intermediate rail 9 increases, and the occurrence of collision noise is reduced. It has the effect of being able to do it. FIG. 8 shows a second embodiment, and shows an inclined guide means 19 ′ that can change the height position of the support lever 17 in the front-rear direction of the drawer 3 with respect to the intermediate rail 9. Both ends of the support lever 17 are connected via inclined guide means 19 'which is lower at the rear side of the drawer 3 and becomes higher toward the front side.

The structure of the inclined guide means 19 'will be described in more detail.
The inclined guide slot 21 'at the front position and the inclined guide slot 2 at the rear position
2 '. The two inclined guide slots 21 ', 22'
Is inclined at a lower position on the rear side of the drawer 3 with respect to the horizontal line so as to become higher as going forward. For each of the guide slots 21 and 22, the vertical plate 9a of the intermediate rail 9 is provided.
And slidably supported by round shaft-shaped pins 23 and 24 which project laterally. At this time, the distal ends of the pins 23 and 24 are made large in diameter so that the support lever 17 does not fall off, and the base ends of the pins 23 and 24 are caulked and fixed to the vertical plate portion 9a. In this embodiment,
Nipping roller 15, supporting roller 16, and idler gear 2 provided on a supporting lever 17 that is substantially parallel and that moves up and down in an oblique direction
5 so that the base of the support shaft 5 (usually fixed by caulking) does not interfere with the vertical plate 9 a of the intermediate rail 9.
It is preferable to form an interference avoiding hole 29 'substantially parallel to the inclined guide groove holes 21' and 22 '.

Also in this embodiment, when the support roller 16 of the intermediate rail 9 is located at the front end of the lower plate 7b of the fixed rail 7, the front side of the support lever 17 projects forward from the front end of the fixed rail 7. In this state, the rear end 12a of the horizontal rail portion 12 of the drawer rail 8 is located at a position slightly behind the upper end of the sandwiching roller 15, and the horizontal rail portion 12 is sandwiched by the upper roller 14 in front of the rear end 12a. This allows overhanging in which the rear end of the storage section 6 moves forward from the front of the box 1.

Further, similarly to the embodiment of FIG.
The rear end of the intermediate rail 9 receives a downward reaction force from the upper plate 7 a side of the fixed rail 7 via the rear roller 10, and the support roller 16 positioned halfway between the front and rear of the intermediate rail 9 is moved to the lower plate 7 b of the fixed rail 7. It will receive an upward reaction force from the side. Due to this reaction force, the support lever 17 moves obliquely upward and substantially parallel to the rear through the inclined guide slots 21 and 22 at the front and rear positions, and the holding roller 15 and the upper roller 14 in front of the holding roller 15 move in the horizontal rail section. 12 can be clamped.

The synchronous interlocking mechanism (synchro mechanism)
In place of the gear mechanism that meshes with the planetary gears, the holding roller 15 and the supporting roller 16 are synchronously linked via an endless belt. For example, as shown in FIGS. 9 and 10, the toothed pulley portion 3 is provided on each side of the holding roller 15 and the support roller 16.
2 and 33 are integrally formed, and the toothed pulley portions 32 and 3 are integrally formed.
The endless belt 3 may be wound around the timing belt 31 so that the holding roller 15 and the supporting roller 16 rotate in conjunction with each other in the same direction. According to this configuration, the holding roller 6 and the supporting roller 16 can be interlocked and rotated via the timing belt 31 in a state in which the arrangement distance of the intermediate rail 9 in the front-rear direction is long, so that the storage portion 6 of the drawer 3 can be rotated.
The amount of overhanging in which the rear end projects forward from the front surface of the box 1 can be increased, and the pinching roller 15
By making the number of teeth and the diameter of the toothed pulley portion 32 of the support roller 16 larger than the number of teeth and the diameter of the toothed pulley portion 32 in FIG.

[0034]

As described in detail above, the drawer suspension device according to the first aspect of the present invention has a fixed rail fixed to a fixed wall of a box body such as a cabinet, and fixed to both left and right outer surfaces of the drawer. In a drawer suspension device comprising a drawer rail and an intermediate rail interposed and slidable between the fixed rail and the drawer rail, the intermediate rail includes a drawer at a position where the drawer is largely drawn out and an upper side of the fixed rail. A lower roller that supports the lower surface of the front side of the horizontal rail portion of the drawer rail, and an upper roller that supports the upper surface of the rear end side of the horizontal rail portion. The supporting roller that supports the lower surface of the horizontal rail on the side and the supporting roller that is supported on the lower side of the fixed rail behind the holding roller are rotatably mounted on the support lever. , Wherein the support lever, via the inclined guide means capable of changing the height position in the longitudinal direction of the drawer relative to the middle rail, in which a structure linked to the intermediate rail.

Therefore, as in the prior art, the support lever is rotated about the center of rotation of the base end, and the inclination guide means, as in the present invention, is longer than the distance at which the pinching roller on the free end rises. As a result, the ascending distance is shorter when the support lever is raised in a substantially parallel state. In addition, the tilt guide means is provided so as to move upward in front of the drawer or upward in the rear of the drawer, and the support lever is raised in a substantially parallel state in any case. The pressure pinched by the rollers and the pinching rollers is reduced.

Accordingly, the braking force acting on the moving horizontal rail portion is smaller than that of the conventional one, and the drawer can be pulled out with a light force. In addition, since the horizontal rail is held between the upper roller and the holding roller with a small force, the horizontal rail does not rattle up and down. According to a second aspect of the present invention, in the suspension device for the drawer according to the first aspect, the inclined guide means includes at least a pair of front and rear inclined slots having a front upward inclination or a rear upward inclination of the drawer. A pin connected to the intermediate rail through an inclined groove, wherein each of the inclined grooves is formed at one of the front and rear ends of the support lever or at one of the intermediate rails, and the pin is provided at the other end. Things.

By connecting the front and rear ends of the support lever to the vertical plate portion of the intermediate rail via pins, a support lever as a separate member is attached to the side surface of the vertical plate portion. Therefore, the rigidity of the intermediate rail at the portion where there is no lower end horizontal portion can be reinforced for mounting the holding roller and the supporting roller. And, as the inclined guide means, the inclined slot is formed at either one of the front and rear ends of the support lever or at the intermediate rail, and the pin is provided at the other side, so that the configuration is extremely simple.

According to a third aspect of the present invention, in the suspension device for a drawer according to the first or second aspect, the supporting lever is provided with an idle gear between the holding roller and the supporting roller. It is rotatably mounted, and the holding roller and the supporting roller are provided with gear portions that respectively mesh with the idle gear. As described above, since the sandwiching roller and the supporting roller rotate synchronously via the gear portion and the idle gear,
When the holding roller rotates as the drawer rail moves, the supporting roller is always in contact with the intermediate rail and rolls, and the horizontal rail part is held between the upper roller and the holding roller. This has the effect that the drawer can be moved back and forth lightly without any trouble.

According to a fourth aspect of the present invention, in the drawer suspension device according to the first or second aspect, the holding roller and the supporting roller are interlockingly rotated via an endless belt. It is composed. According to this configuration, it is possible to interlock and rotate via the endless band in a state where the arrangement distance of the intermediate rail between the sandwiching roller and the supporting roller in the front-rear direction is long, so that the rear end of the drawer storage section is a box body. It is possible to increase the amount of overhanging that protrudes forward from the front surface of the fixed part, etc., and make the diameter of the endless belt wrapped part of the support roller larger than the diameter of the endless band wrapped part of the holding roller. As a result, it is possible to move a heavy drawer with a light force.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a cabinet and a drawer.

FIG. 2 is a partially cutaway side view of the right suspension device.

3A is a sectional view taken along line AA of FIG. 2, FIG. 3B is a sectional view taken along line BB of FIG. 2, and FIG. 3C is a sectional view taken along line CC of FIG. FIG.

4D is a cross-sectional view taken along a line DD in FIG. 2, FIG. 4E is a cross-sectional view taken along a line EE in FIG. 2, and FIG. 4F is a cross-sectional view taken along a line FF in FIG. FIG. 3G is a sectional view taken along line GG of FIG. 2.

FIG. 5 is a main part side view of the inclined guide means of the first embodiment in a state where a drawer rail is pulled out to a maximum position.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

FIG. 7 is a partially cutaway sectional view of another embodiment of the holding roller and the supporting roller.

FIG. 8 is a side view of a main part of the inclined guide unit according to the second embodiment in a state where a drawer rail is pulled out to a maximum position.

FIG. 9 is a side view showing another embodiment of the synchronous interlocking mechanism between the holding roller and the supporting roller.

FIG. 10 is a sectional view taken along line XX of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Box 3 Drawer 5 Suspension device 7 Fixed rail 8 Drawer rail 9 Intermediate rail 10 Rear roller 11 Midway roller 12 Horizontal rail portion 13 Front end roller 14 Upper roller 15 Nipping roller 16 Supporting roller 17 Supporting lever 19, 19 'Incline guide means 21 , 22, 21 ', 22' Slant guide slot 23, 24 Pin 25 Idler gear 26, 27 Gear part 31 Timing belt

Claims (4)

[Claims] 1. A fixed rail fixed to a fixed wall of a box such as a cabinet, a drawer rail fixed to both left and right outer surfaces of a drawer, and an intermediate rail interposed and slidable between the fixed rail and the drawer rail. In the drawer suspension device comprising: a middle roller, a rear roller abutting on the upper side of the fixed rail at a position where the drawer is largely drawn out, and a front end supporting the lower surface of the front side of the horizontal rail portion in the drawer rail. A roller, and an upper roller that supports an upper surface on a rear end side of the horizontal rail portion; a holding roller that supports a lower surface of the horizontal rail portion on a lower surface side of the upper roller; and a rear side than the holding roller. The support roller supported on the lower side of the fixed rail is rotatably mounted on the support lever, and the height of the support lever can be changed in the front-rear direction of the drawer with respect to the intermediate rail. A drawer suspension device connected to an intermediate rail via inclined guide means. 2. The inclining guide means is constituted by at least a pair of front and rear inclined slots of a drawer with a forward upward inclination or a rear upward inclination, and a pin connected to an intermediate rail through both the front and rear inclined slots. 2. The drawer suspension device according to claim 1, wherein the inclined slot is formed at one of the front and rear ends of the support lever and at one of the intermediate rails, and the pin is provided at the other end. 3. An idle gear is rotatably mounted between the holding roller and the supporting roller on the supporting lever, and the holding roller and the supporting roller each have a gear portion that meshes with the idle gear. 3. The method according to claim 1, wherein
4. The suspension device for a drawer according to claim 1. 4. The drawer suspension device according to claim 1, wherein the holding roller and the supporting roller are configured to rotate in conjunction with each other via an endless belt.