JPH11127997A - Suspension apparatus for moving object such as funnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suspension device compact along with a limited degree of defection. SOLUTION: The vertical dimension of one intermediate rail 6 is set larger than those of a fixed rail 4 and a mobile rail 4 while a pair of first rail grooves 10 and 10, upper and lower, formed as opposed to each other are arranged at upper and lower points in a recessed part 8 which is made in the vertical course of the intermediate rail 6 and ball trains 9 and 9 are interposed respectively between the pair of second rail grooves 10 and 10, upper and lower, formed at the upper end of the mobile rail 5 and the first rail grooves 10 and 10 while ball trains 9 and 9 between a pair of third rail grooves 12 and 12, upper and lower, formed as opposed to each other at upper and lower ends of the intermediate rail 6 and fourth rail grooves 13 and 13 which are formed at upper and lower ends of the fixed rail 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a suspension device which allows a movable body such as a drawer to be drawn out of a box such as a cabinet.

[0002]

2. Description of the Related Art A suspension apparatus of this type is disclosed, for example, in US Pat. No. 4,025,138. In the invention disclosed in this publication, the fixed rail fixed to the side wall of the box has upper and lower ends having rail grooves having a C-shaped cross section facing each other, and the drawer rail mounted on the outer surface of the drawer has upper and lower ends thereof. Have rail grooves having a C-shaped cross section facing each other, and are opened in a direction opposite to the fixed rail. An upper intermediate rail which can be moved back and forth by fitting in a vertical rail groove of the drawer rail via a ball row, and a lower intermediate rail which can be moved forward and rearward by being fitted in a vertical rail groove of a fixed rail via a ball row. Are connected at the front and rear portions thereof through a pair of front and rear connection pieces, and the front end of the front connection piece and the rear end of the rear connection piece are wound around the gap between the drawer rail and the fixed rail in the vertical direction. Attach each roller,
When the loop-shaped wire wound around the front and rear winding rollers is fixed to the lower front portion of the drawer rail and the upper rear portion of the fixed rail, respectively, and the drawer rail is moved back and forth. The pair of upper and lower intermediate rails is configured to be a synchronous interlocking mechanism that moves back and forth by half the amount of movement with respect to the fixed rail.

[0003] In other words, in the synchronous interlocking mechanism, the drawer rail can move back and forth by twice the amount of front and rear movement of the intermediate rail. In the case where such an intermediate rail is interposed between the fixed rail and the drawer rail, the latter half of the intermediate rail is located in the first half of the fixed rail, and the latter half of the drawer rail is located in the first half of the intermediate rail. Until is located, can be pulled out greatly.

[0004]

In this type of suspension apparatus, when analyzing a state in which the drawer rail supporting the drawer containing the articles is pulled out greatly, a distributed load acts on the drawer rail in the front-rear direction of the drawer. However, assuming that the fixed rail is supported by the cabinet body at both ends in the longitudinal direction, the largest downward bending moment acts on the middle part in the front-rear direction of the intermediate rail. If the section modulus (or the second moment of area) with respect to the horizontal line at the centroid is small, if the front part of the intermediate rail is elastically deformed so as to hang down greatly, the front end of the drawn-out drawer is greatly lowered forward. In severe cases, permanent deformation occurs in which the front side of the intermediate rail hangs down, Also occurs a problem that the back-and-forth movement of the Doo can not be smoothly performed.

In the above-mentioned conventional technique, the intermediate rail is made up of two upper and lower rails to maintain a large section modulus. However, the size of the entire suspension in the vertical direction becomes too large, and the suspension becomes bulky. was there. SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the related art, and provides a suspension device that is compact and does not cause drooping in front of the suspension or permanent deformation in the direction thereof. It is intended for.

[0006]

In order to achieve the above-mentioned object, the invention according to claim 1 comprises a fixed rail fixed to a fixed wall of a box such as a cabinet, and a left and right outer surface of a moving body such as a drawer. In a suspension device for a moving body such as a drawer comprising a moving rail to be fixed and an intermediate rail slidably interposed between the two rails via slider means, the vertical dimension of the intermediate rail is adjusted by the two rails. Formed to be larger than the vertical dimension,
The upper and lower ends of the moving rail are guided in the front-rear direction via slider means in a longitudinal recess formed in the middle part of the intermediate rail in the vertical direction, while the side surface opposite to the moving rail is configured. The upper end of the fixed rail, which is disposed at the center, is guided in the front-rear direction between the upper and lower ends of the intermediate rail via slider means.

[0007] The invention described in claim 2 is the first invention.
In the suspension device for a moving body such as a drawer described in the above, a pair of upper and lower first rail grooves formed opposite to each other are formed in the recess in the intermediate rail, and a pair of upper and lower A pair of upper and lower third rail grooves are formed opposite to each other at upper and lower ends of the intermediate rail while a ball row as a slider means is interposed between the second rail groove and the pair of upper and lower first rail grooves. And a fourth rail groove formed at the upper and lower ends of the fixed rail.

According to a third aspect of the present invention, there is provided a suspension device for a moving body such as a drawer according to the first or second aspect, wherein the moving rail has a length twice as long as a front-rear moving amount of the intermediate rail with respect to the fixed rail. It has a synchronous interlocking mechanism that moves back and forth.

[0009]

Next, embodiments of the present invention will be described. 1 is a perspective view of a suspension device, FIG. 2 is an enlarged perspective view of a main part, FIG. 3 is an enlarged sectional view, and FIG. 4 is a side view and a sectional view of an intermediate rail. The suspension apparatus 1 of the present invention is arranged between left and right side plates 2 (only one is shown in FIG. 3) as fixed walls in a cabinet and outer surfaces on both left and right sides of the drawer, and supports the drawer so as to be able to move back and forth. A fixed rail 4 is fixed to the side plate 2;
The moving rail 5 is fixed to the outer surface of the left and right side plates 3 (only one is shown in FIG. 3) of the drawer, and the intermediate rail 6 is interposed therebetween. In the embodiment, the suspension device 1
Are protected by a cover body 7 having a U-shaped cross section fixed to the side plate 3 on the drawer side and having a longitudinal front and rear.

As shown in FIG. 1, FIG. 2 and FIG. 6, a ball row 9 as a slider means, which will be described later, is inserted into a longitudinally long recess 8 formed at an intermediate portion of the intermediate rail 6 in the vertical direction. To guide the upper and lower ends of the moving rail 5 in the front-rear direction. For this reason, the first inside and the bottom of the recess 8 are opposed to each other so as to face each other.
The rail grooves 10, 10 are formed in a concave groove shape. On the other hand, the upper and lower ends of the moving rail 5 having a U-shaped cross section are also provided in the second rail groove 1 having a concave shape so as to face the first rail grooves 10, 10.
1 and 11 are formed (see FIG. 8).

As shown in FIG. 6, the upper and lower portions of the intermediate rail 6 are bent in a direction opposite to the direction in which the recess 8 is opened, and the upper end of the intermediate rail 6 is provided with a third downwardly grooved third rail groove 12. Are formed. Similarly, an upper concave groove-shaped third rail groove 12 is formed at the lower end of the intermediate rail. As shown in FIG. 1 to FIG. 3 and FIG. 7, a ball row 9 is inserted into the upper and lower ends of a vertically long flat plate on the fixed rail 4 disposed on the opposite side to the moving rail 5 with the intermediate rail 6 interposed therebetween. Groove rails 13, 13 are formed. These first rail groove 10 to fourth rail groove 13 are formed over the entire length of each rail 4, 5, 6, respectively.

Thus, when the fixed rail 4, the intermediate rail 6, and the moving rail 5 of the suspension device 1 are each formed by one member, the vertical dimension H of the intermediate rail 6 is obtained.
Numeral 1 is formed so as to be larger than the vertical dimension of either the moving rail 5 or the fixed rail 4, and the second moment of area with respect to a horizontal line passing through the center of the cross section (see FIG. 6) of the intermediate rail 6 is obtained. Therefore, even when the moving rail 5 is pulled out largely, the amount of downward bending generated at the intermediate rail 6 can be reduced.

As shown in FIGS. 2, 9 (a), 9 (b), and 11, a ball array 9 as a slider means for moving the rails lightly with less resistance to forward and backward movement between the rails. In addition, mounting holes 14 a for balls 15 are formed at appropriate intervals in a long and thin plate-shaped retainer (retainer) 14, and a plurality of holes such as slidingly in contact with the surface of the ball 15 are provided on both front and back surfaces of the retainer (retainer) 14. The holding piece 14b is formed integrally.

The projection 16 at the front end of the fourth rail groove 13 of the fixed rail 4 and the projection 17 at the rear end of the third rail groove 12 of the intermediate rail 6 are inserted between the two rail grooves 12, 13. The protrusion 18 at the front end of the first rail groove 10 on the intermediate rail 6 and the protrusion 19 at the rear end of the second rail groove 11 on the moving rail 5 are provided to prevent the ball row 9 from falling off. This is for preventing the ball row 9 inserted between the rail grooves 10 and 11 from falling off.

Next, a description will be given of a structure of a synchronous interlocking mechanism in which the movable rail 5 moves back and forth by twice the amount of moving the intermediate rail 6 back and forth with respect to the fixed rail 4. As shown in FIG. 1, FIG. 4 (a) and FIG. 4 (b), a notch groove 20 is formed in the front and rear end portions in the longitudinal direction in the recess in the intermediate rail 6, and the inside of each notch groove 20 is formed. Has a support block 2 for rotatably mounting the wire support roller 21.
2 is fixed to the vertical plate 6 a of the intermediate rail 6 with screws 23.
Further, the first locking block 24 is screwed to a position near the rear of the moving rail 5, and the second locking block 25 is screwed to a position near the front of the fixed rail 4. In the front locking slot 24a of the first locking block 24,
After the metal fitting 27a of the first wire 27 is locked and the middle part of the first wire 27 is wound around the wire support roller 21 at the front end, the front locking slot 2 of the second locking block 25 is formed.
The other end fitting 27b of the first wire 27 is locked to 5a. Further, a rear locking slot 24b of the first locking block 24 is provided.
Is connected to the one end fitting 28a of the second wire 28 by an urging spring 29.
After the intermediate portion of the second wire 28 is wound around the wire support roller 21 at the rear end, the second locking block 2
5, the other end fitting 28b is locked in the rear locking slot 25b. The urging spring 29 has a function of preventing the wires 27 and 28 from loosening.

With this configuration, as shown schematically in FIG. 11 (a), when the movable rail 5 attached to the drawer is pushed into the main body of the cabinet, the fixed rail 4, the intermediate rail 6, and the movable rail 5 are moved. The front ends of the rails 5 are located substantially at the same position, and the ball row 9 is located halfway in the front-rear direction of each rail. Then, as shown in FIG. 11B, when the drawer is pulled forward, the second locking block 25 is connected to the intermediate rail 6 via the first locking block 24 and the second wire 28 connected thereto. Pull to come to the rear part.

Thus, the intermediate rail 6 moves forward by half the distance the moving rail 5 has moved forward with respect to the fixed rail 4. Contrary to the above, when the drawer is pushed into the cabinet body, the moving rail 5 retreats largely with respect to the fixed rail 4, and the intermediate rail 6 retreats by half the amount. In other words, the moving rails 5 move synchronously so that the moving rails 5 move forward and backward by a distance twice as long as the intermediate rail 6 moves forward and backward with respect to the fixed rail 4.

As another embodiment of the synchronous interlocking mechanism, as shown in FIGS. 12 (a) and 12 (c), three rollers meshing with gears are provided at intermediate positions in the longitudinal direction of the vertical plate of the intermediate rail 6. 31, 32, 33 are arranged in a row, one roller 33 is slid in contact with the vertical plate portion of the moving rail 5 arranged on one surface of the intermediate rail 6, and the other roller 31 is interposed between the other rails with the intermediate rail 6 interposed therebetween. It is brought into sliding contact with a vertical plate of a fixed rail (not shown) arranged on the surface side. Reference numeral 34 denotes a retainer in which the upper and lower ball rows 9 are connected by a vertical plate. According to this configuration, the rollers 31 and 33 rotate in the same direction in conjunction with the forward and backward movement of the moving rail 5, and the intermediate rail 6 is moved by half the distance that the moving rail 5 has moved back and forth with respect to the fixed rail 4. Moves back and forth.

The embodiment shown in FIG. 12B is a synchronous interlocking mechanism for rotating the two rollers 35 and 36 in the same direction by synchronizing with the belt 37. As still another embodiment of the synchronous interlocking mechanism, a pinion gear is rotatably provided at a portion formed in a middle part of the vertical plate of the intermediate rail 6 in the front and rear direction, and a rack portion meshing with the pinion gear is provided with a fixed rail and a moving rail. May be provided along the longitudinal direction.

The slider means may be a roller row having a retainer instead of the ball row 9, or a synthetic resin sliding member having a small friction coefficient may be interposed between the rail grooves, or one or both of them. The sliding member may be fixed to the surface of the rail groove by attaching the sliding member. FIG.
As shown in (a), instead of connecting the pair of upper and lower ball rows 9, 9 with vertical plates, the upper and lower ball rows are separated, and a slider such as a ball row and a roller row in each rail groove is provided. The work of incorporating the means becomes easier.

Further, the support block 2 shown in FIG.
2, the first locking block 24 or the second locking block 25 is brought into direct contact with the cassette locking block 2.
Instead of restricting the forward and backward movement of the 4, 25, a part of the vertical plate 6a of the intermediate rail 6 is cut and raised at the base end of the support block 22 (on the side where the locking block 24 (25) collides). If a rubber piece as a cushioning member is attached to the cut-and-raised piece, a direct collision between the support block and the locking block is avoided, and damage to the component can be prevented.

It is preferable to attach a rubber piece 40 for cushioning to the cut-and-raised piece 38 at the rear end of the fixed rail 4 and the cut-and-raised piece 39 at the front end of the movable rail 5 shown in FIG.

[0023]

As described above in detail, the first aspect of the present invention provides a fixed rail fixed to a fixed wall of a box body such as a cabinet and a movable rail fixed to both left and right outer surfaces of a moving body such as a drawer. In a suspension device for a moving body such as a drawer comprising a rail and an intermediate rail slidably interposed between the two rails via respective slider means, the vertical dimension of the intermediate rail is adjusted in the vertical direction of the two rails. The upper and lower ends of the moving rail are guided in the front and rear direction via slider means in a front and rear longitudinal recess formed in a middle part of the intermediate rail in the vertical direction. The upper end of the fixed rail disposed on the side opposite to the moving rail is guided in the front-rear direction between the upper and lower ends of the intermediate rail via slider means.

As described above, the vertical dimension of one intermediate rail is set to be larger than the vertical dimension of the two rails, and a recess is formed in a middle part of the intermediate rail in the vertical direction. The section modulus of the intermediate rail and thus the rigidity are increased, and when the movable rail is pulled out largely, the amount of bending due to the bending moment acting on the intermediate rail can be reduced. And, since the fixed rail and the movable rail are arranged so as to move back and forth within the vertical dimension of the intermediate rail, the vertical dimension of the suspension device is reduced while the vertical dimension of the intermediate rail is large. This has the effect of being compact.

The invention described in claim 2 is the first invention.
In the suspension device for a moving body such as a drawer described in the above, a pair of upper and lower first rail grooves formed opposite to each other are formed in the recess in the intermediate rail, and a pair of upper and lower A pair of upper and lower third rail grooves are formed opposite to each other at upper and lower ends of the intermediate rail while a ball row as a slider means is interposed between the second rail groove and the pair of upper and lower first rail grooves. And a fourth rail groove formed at the upper and lower ends of the fixed rail.

As described above, since the rail groove is formed at each of the upper and lower portions and the upper and lower ends of the recess in one intermediate rail, the rigidity of the intermediate rail can be further increased and the intermediate rail can be hardly bent. This has the effect. Further, the invention according to claim 3 is a suspension device for a moving body such as a drawer according to claim 1 or 2,
A synchronous interlocking mechanism is provided in which the moving rail moves back and forth by twice the amount of front and rear movement of the intermediate rail with respect to the fixed rail.

With this configuration, the front-rear movement amount between the moving rail and the intermediate rail is set at a predetermined ratio when the moving body such as the drawer moves back and forth, so that the movement of the suspension device can be made extremely smooth. It is.

[Brief description of the drawings]

FIG. 1 is a perspective view of a suspension device.

FIG. 2 is an enlarged perspective view of a main part of the suspension device.

FIG. 3 is a sectional view taken along line III-III in FIGS. 1 and 2;

4A is a side view of an intermediate rail, and FIG.
FIG. 4 is a sectional view taken along line IVa-IVa in FIG.

FIG. 5 is a front view of the suspension device.

FIG. 6 is a sectional view of an intermediate rail.

FIG. 7 is a sectional view of a fixed rail.

FIG. 8 is a sectional view of a moving rail.

9A is an enlarged plan view of a retainer, and FIG. 9B is a cross-sectional view.

FIG. 10 is an enlarged perspective view of a locking block.

11A is an explanatory diagram showing the position of each component when the moving rail is pushed in, and FIG. 11B is an explanatory diagram showing the position of each component when the moving rail is pulled out.

12A is a perspective view of another embodiment of the synchronous interlocking mechanism, FIG. 12B is a perspective view of a belt interlocking roller, and FIG. 12C is a perspective view of a geared roller.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suspension device 4 Fixed rail 5 Moving rail 6 Intermediate rail 8 Depression 9 Ball row 10 First rail groove 11 Second rail groove 12 Third rail groove 13 Fourth rail groove 21 Wire support roller 27 First wire 28 Second wire

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Katsunori Hama 1-4-1 Imafuku Higashi, Joto-ku, Osaka

Claims (3)

[Claims] 1. A fixed rail fixed to a fixed wall of a box body such as a cabinet, a moving rail fixed to both left and right outer surfaces of a moving body such as a drawer, and slidable between the both rails via slider means. A suspension device for a moving body such as a drawer including an intermediate rail interposed therein, wherein the vertical dimension of the intermediate rail is formed to be larger than the vertical dimension of the two rails, and the intermediate part of the intermediate rail in the vertical direction The upper and lower ends of the moving rail are guided in the front-rear direction via slider means in the front and rear longitudinal recess formed on the other side, while the upper ends of the fixed rails arranged on the side surface opposite to the moving rail are arranged. A suspension device for a moving object such as a drawer, which is configured to be guided in the front-rear direction between upper and lower ends of an intermediate rail via slider means. 2. A pair of upper and lower first rail grooves formed opposite each other in a recess in the intermediate rail, and a pair of upper and lower second rail grooves formed at an upper end of a moving rail. A ball row as a slider means is interposed between the first rail groove and a pair of upper and lower third rail grooves formed opposite to the upper and lower ends of the intermediate rail and the upper and lower ends of the fixed rail. The suspension device for a moving body such as a drawer according to claim 1, wherein a ball row as a slider means is interposed between said fourth rail groove and said fourth rail groove. 3. A moving body such as a drawer according to claim 1, further comprising a synchronous interlocking mechanism in which the moving rail moves back and forth by an amount twice as long as the moving distance of the intermediate rail with respect to the fixed rail. Suspension device against.