WO2008038472A1 - Slide rail unit - Google Patents

Slide rail unit Download PDF

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Publication number
WO2008038472A1
WO2008038472A1 PCT/JP2007/065944 JP2007065944W WO2008038472A1 WO 2008038472 A1 WO2008038472 A1 WO 2008038472A1 JP 2007065944 W JP2007065944 W JP 2007065944W WO 2008038472 A1 WO2008038472 A1 WO 2008038472A1
Authority
WO
WIPO (PCT)
Prior art keywords
rail
ball
balls
cross
moving
Prior art date
Application number
PCT/JP2007/065944
Other languages
French (fr)
Japanese (ja)
Inventor
Kaoru Hoshide
Soichi Sasaki
Original Assignee
Thk Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thk Co., Ltd. filed Critical Thk Co., Ltd.
Priority to JP2008536303A priority Critical patent/JPWO2008038472A1/en
Publication of WO2008038472A1 publication Critical patent/WO2008038472A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B88/00—Drawers for tables, cabinets or like furniture; Guides for drawers
    • A47B88/40—Sliding drawers; Slides or guides therefor
    • A47B88/49—Sliding drawers; Slides or guides therefor with double extensible guides or parts
    • A47B88/493—Sliding drawers; Slides or guides therefor with double extensible guides or parts with rollers, ball bearings, wheels, or the like

Definitions

  • the present invention includes a fixed rail, an intermediate rail, and a moving rail, and in the longitudinal direction, the intermediate rail is slidable with respect to the fixed rail, and the moving rail is slidable with respect to the intermediate rail.
  • the present invention relates to a slide rail unit configured as described above.
  • Patent Document 1 proposes one having the following configuration.
  • the fixed rail and the moving rail are substantially flat, and the rolling grooves of the ball are formed by bending the upper and lower ends of the fixed rail and the moving rail along the longitudinal direction.
  • the intermediate rail has a substantially I-shaped cross section orthogonal to the longitudinal direction, and ball rolling grooves are formed by bending the upper and lower ends toward both side surfaces. Then, a fixed rail and a moving rail are respectively disposed so as to face the side surface of the intermediate rail, and a ball is disposed between the rolling groove and the rolling groove that are opposed to each other.
  • the fixed rail and the moving rail are shaped so that the upper and lower ends thereof are bent so as to hold the ball.
  • a bending moment or twisting moment is applied by a load that has a small second moment, deformation is likely to occur.
  • the slide rail units installed on both sides of the drawer are misaligned, there is a risk of bending and twisting moments acting on these fixed and moving rails. .
  • the moving rail and the intermediate rail By deforming in this way, the moving rail and the intermediate rail However, there is a problem in that the rolling of the ball arranged between the intermediate rail and the fixed rail is hindered and the sliding movement cannot be performed smoothly.
  • Patent Document 2 proposes an arrangement in which a moving rail and a fixed rail are stacked in the vertical direction on the upper and lower ends of an intermediate rail having a substantially I-shaped cross section perpendicular to the longitudinal direction. Yes.
  • the moving rail and the fixed rail are each configured to be wide, and the secondary moment of the section is increased, so that deformation due to bending moment or torsional moment can be suppressed.
  • Patent Document 1 JP 2004-113512 A
  • Patent Document 2 Japanese Patent Laid-Open No. 62-215120
  • the intermediate rail has a substantially I-shaped cross section, and is deformed by a bending moment or a torsional moment with a narrow width and a small secondary moment. It has an easy shape.
  • the intermediate rail is deformed, the rolling of the ball placed between the moving rail and the intermediate rail and between the intermediate rail and the fixed rail is hindered, and the sliding movement cannot be smoothly performed. was there.
  • the refrigerator body is a resin molded product and is arranged on both sides of the storage that easily deforms when fixing the fixed rail.
  • the intermediate rail is formed in a substantially I-shaped cross section, and a fixed rail and a moving rail are respectively provided on the upper and lower ends thereof, and three balls in the cross section. It is assembled through.
  • one ball is arranged on the upper and lower end surfaces of the intermediate rail, and it is necessary to form a rolling groove for this ball on the upper surface of the moving rail.
  • the upper surface of the moving rail has a shape protruding upward, and it is difficult to attach a member such as a drawer to the moving rail.
  • the present invention has been made in view of the above-described circumstances, and suppresses deformation such as torsion and deflection of the intermediate rail, the moving rail, and the fixed rail, so that even if there is an attachment error, the smoothness is achieved. It is an object of the present invention to provide a slide rail unit that can be slid and can be easily attached to a moving rail.
  • a slide rail unit includes a fixed rail, an intermediate rail assembled to the fixed rail via a plurality of balls, and a plurality of balls on the intermediate rail.
  • a slide rail configured to be slidable relative to the fixed rail in the longitudinal direction, and the movable rail is slidable relative to the intermediate rail in the longitudinal direction.
  • the upper and lower ends of the intermediate rail are provided with an upper support portion and a lower support portion that extend in a direction intersecting with the upper and lower directions in a cross section perpendicular to the longitudinal direction.
  • the lower support portion has a substantially isosceles triangle shape whose cross section is arranged with the base on the upper side, and a rolling groove for the ball is formed on each side ridge portion of the triangle.
  • a ball guide portion is provided, and the upper support portion has an approximately isosceles triangular shape with a bottom disposed at the bottom, and a ball rolling groove is formed on each side ridge portion of the triangle.
  • the lower support portion is assembled with the fixed rail having a substantially C-shaped cross section and formed with a rolling groove for the ball on the inner surface, and is attached to the upper support portion.
  • the cross section is substantially C-shaped, the ball rolling groove is formed on the inner surface, the moving rail having a flat upper surface is assembled, and the moving rail is stacked on the fixed rail. Arranged to be! /
  • the intermediate rail has an upper support portion and a lower support portion that extend in a direction intersecting with the vertical direction, so the intermediate rail also has a wide shape.
  • the moment of inertia of the cross section increases, and it is possible to suppress the deformation S such as torsion and deflection.
  • the movable rail and fixed rail are also roughly C-shaped in cross section, and are difficult to deform such as torsion and deflection with a large secondary moment.
  • the upper support portion and the lower support portion to which the moving rail and the fixed rail are assembled have an upper bow having a cross-sectional isosceles triangle shape and provided with a rolling groove on each side ridge portion. Since the guide rail and the lower ball guide are formed, the movable rail and the fixed rail are supported by the intermediate rail via the three balls arranged in the rolling groove on the cross section orthogonal to the longitudinal direction. Yes.
  • the moving rail and fixed rail will rotate and tilt around these ball guides along the ball. The torsional deformation of the fixed rail, moving rail and intermediate rail can be prevented.
  • the upper ball guide portion has a substantially isosceles triangular shape with the bottom arranged downward, the two balls are arranged upward in the cross section. This makes it possible to form the upper surface flat by forming the ball rolling grooves on both ends of the upper surface of the moving rail. Therefore, a member such as a drawer can be easily attached to the upper surface of the moving rail.
  • the intermediate rail may be formed such that a cross section perpendicular to the longitudinal direction is substantially C-shaped.
  • the intermediate rail since the intermediate rail has a C-shape opening in one direction, it can be formed by roll forming or the like, and this slide rail unit can be immediately manufactured at low cost.
  • the intermediate rail may be formed so that a cross section orthogonal to the longitudinal direction has a substantially S-shape.
  • the moving rail and the fixed rail are assembled to the intermediate rail from opposite sides, and the ball rolling groove is not exposed on the side surface when the rail is pulled out. It becomes possible.
  • an attachment portion for attaching a member may be formed on the moving rail between the two balls arranged on the upper surface side of the moving rail.
  • the storage member such as the drawer can be Can be easily attached to a surface.
  • the radius of curvature of the rolling groove is set to be larger than the radius of the ball so that the ball and the rolling groove are in point contact, and the ball has a cross section perpendicular to the longitudinal direction.
  • the upper ball guide portion or the lower portion The ball guides may be arranged so that they intersect at the approximate center of the triangle.
  • the moving rail and the fixed rail force are more easily rotated around the center of the triangle formed by the upper ball guide portion or the lower ball guide portion, and the torsional moment is applied to the moving rail and the fixed rail due to an attachment error or a load. Even if it acts, the deformation of the fixed rail, the moving rail and the intermediate rail can be prevented, and the sliding movement of these rails can be performed smoothly.
  • FIG. 1 is a perspective view of a slide rail unit according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of the slide rail unit shown in FIG.
  • FIG. 3 is a cross-sectional view showing an example in which the slide unit shown in FIG. 1 is applied to a slide-type storage for a refrigerator.
  • FIG. 4 is a cross-sectional view of a slide rail unit that is Modification 1 of the present embodiment.
  • FIG. 5 is a cross-sectional view of a slide rail unit that is Modification 2 of the present embodiment.
  • FIG. 6 is a cross-sectional view of a slide rail unit that is a third modification of the present embodiment.
  • FIG. 7 is a cross-sectional view of a slide rail unit that is a fourth modification of the present embodiment.
  • FIG. 8 is a cross-sectional view of a slide rail unit that is Modification 5 of the present embodiment.
  • FIG. 9 is a cross-sectional view of a slide rail unit that is Modification 6 of the present embodiment. Explanation of symbols
  • the slide rail unit 10 includes a fixed rail 20, an intermediate rail 30 that is assembled to the fixed rail 20 via a plurality of balls 11, and a movable rail 40 that is assembled to the intermediate rail 30 via a plurality of balls 11.
  • a fixed rail 20 an intermediate rail 30 that is assembled to the fixed rail 20 via a plurality of balls 11
  • a movable rail 40 that is assembled to the intermediate rail 30 via a plurality of balls 11.
  • the intermediate rail 30 has a substantially C-shaped cross section perpendicular to the longitudinal direction, and a main body 31 extending in the vertical direction and one side from the upper end of the main body 31 ( An upper support portion 32A protruding toward the right side in FIG. 2 and a lower support portion 32B protruding from the lower end of the main body portion 31 toward one side are provided. That is, the intermediate rail 30 is provided with an upper support portion 32A and a lower support portion 32B extending in a direction intersecting the vertical direction.
  • the upper support portion 32A is formed with an upper ball guide portion 33A having a substantially isosceles triangle shape whose cross section is arranged with the bottom side downward.
  • Each side ridge portion of the triangle formed by the upper ball guide portion 33A is recessed toward the inside of the triangle, and serves as a rolling groove 34 on which the ball 11 rolls.
  • the upper ball guide portion 33A has two balls 11 disposed above and one ball 11 disposed below.
  • the upper ball guide portion 33A has a substantially regular triangular cross section, and the three balls 11 are 120 in the circumferential direction around the center of the triangle formed by the upper ball guide portion 33A. ° Arranged at intervals.
  • the lower support portion 32B is formed with a lower ball guide portion 33B having a substantially isosceles triangular shape whose cross section is arranged with the base on the upper side.
  • This lower ball guide part 33 Each side ridge portion of the triangle formed by B is recessed toward the inside of the triangle, and serves as a rolling groove 34 on which the ball 11 rolls.
  • the lower ball guide portion 33B has two balls 11 disposed below and one ball 11 disposed above.
  • the lower ball guide portion 33B has a substantially equilateral triangular cross section, and the three balls 11 are arranged in the circumferential direction around the center of the triangle formed by the lower ball guide portion 33B. They are arranged at 120 ° intervals.
  • the force is opposed to the rolling groove 34 provided on the lower side of the upper ball guide portion 33A and the rolling groove 34 provided on the upper side of the lower ball guide portion 33B.
  • the balls 11 and 11 accommodated in the rolling grooves 34 are arranged so that the positions in the width direction coincide with each other.
  • the intermediate rail 30 has a symmetrical shape with respect to a reference plane that is divided in the vertical direction.
  • the radius of curvature of the rolling groove 34 is set to be larger than the radius of the ball 11, and the ball 11 and the rolling groove 34 are configured to make point contact.
  • the three centers of the three balls 11 and the three straight lines (three straight lines) connecting the three Bonoles 11 and the three rolling grooves 34 force S and the three contact points respectively contacting each other. Is a straight line connecting the center of any one of the three balls 11 and the contact point of this one ball 1 and one rolling groove 34 that contacts this one ball 1)
  • the upper ball guide portion 33A or the lower ball guide portion 33B are arranged so as to intersect at the center of the triangle.
  • the fixed rail 20 has a substantially C-shaped cross section orthogonal to the longitudinal direction, and wraps around the lower ball guide portion 33B so that the opening faces the other side (left side in FIG. 2). It is assembled.
  • Three rolling grooves 21 extending in the longitudinal direction are provided on the inner surface of the fixed rail 20, and these rolling grooves 21 are assembled to the intermediate rail 30 in the lower ball guide portion.
  • the three rolling grooves 34 of 33B are arranged so as to face each other.
  • the rolling groove 21 is formed by bending the fixed rail 20 along the longitudinal direction, and the radius of curvature of the rolling groove 21 is set to be larger than the radius of the ball 11, so It is configured to make point contact with the running groove 21.
  • the ball 11 rolls between the rolling groove 34 of the lower ball guide portion 33B and the rolling groove 21 of the fixed rail 20, and slides the intermediate rail 30 in the longitudinal direction relative to the fixed rail 20.
  • the other side wall portion of the fixed rail 20 is provided with a mounting portion 22 that extends toward the other side and extends further upward, for example, to be mounted on the side wall of the refrigerator main body 55 described later. It has been.
  • the mounting portion 22 is provided with a through hole 23 for passing a fixing bolt 57 described later!
  • the movable rail 40 has a substantially C-shaped cross section perpendicular to the longitudinal direction, and the upper ball is oriented so that the opening faces the other side (left side in FIG. 2). It is assembled to wrap around the guide part 33A.
  • the inner surface of the moving rail 40 is provided with three rolling grooves 41 extending in the longitudinal direction, and these rolling grooves 41 are assembled to the intermediate rail 30 in the upper ball guide portion 33A 3.
  • the two rolling grooves 34 are arranged so as to face each other.
  • the rolling groove 41 is formed by bending the moving rail 40 along the longitudinal direction, and the radius of curvature of the rolling groove 41 is set to be larger than the radius of the ball 11, and the rolling groove 41 and the ball 11 are rolled. It is configured to make point contact with the running groove 4 1.
  • the ball 11 rolls between the rolling groove 34 of the upper ball guide portion 33A and the rolling groove 41 of the moving rail 40, and slides the moving rail 40 in the longitudinal direction relative to the intermediate rail 30.
  • the upper surface 42 of the moving rail 40 is formed in a planar shape extending so as to be orthogonal to the vertical direction, and both ends of the upper surface 42 are bent toward the upper side of the upper ball guide portion 33A.
  • Two rolling grooves 41 41 are formed respectively opposite to the two rolling grooves 34 34 formed.
  • An attachment hole 43 for attaching a storage member such as a storage 50 described later is formed on the upper surface 42 of the moving rail 40.
  • a protruding portion 44 that protrudes toward one side of the fixed rail 20 is formed on the side wall surface on one side of the moving rail 40.
  • the intermediate rail 30, the moving rail 40, and the fixed rail 20 can be formed by roll forming a metal plate. Also, bending and drawing using a press machine It can also be formed by punching or extrusion.
  • the balls 11 A retainer (not shown) is arranged for alignment at a predetermined position in the longitudinal direction.
  • the retainer is provided with a ball holding hole (not shown) having a diameter slightly larger than the diameter of the ball 11, and the ball 11 rolls while being accommodated in the ball holding hole. It is configured as follows.
  • the retainer is made of a synthetic resin.
  • FIG. 3 shows a cross-sectional view orthogonal to the sliding direction of the storage case 50 to which the slide rail unit 10 according to the present embodiment is applied.
  • the slide rail units 10A and 10B according to the present embodiment are arranged on both side surfaces of the storage case 50, respectively.
  • a fixing bolt 57 is passed through a through hole 23 formed in the mounting portion 22 of the fixed rail 20, and this fixing bolt 57 is screwed into a bolt hole 56 provided on the side wall of the refrigerator main body 55.
  • the fixed rail 20 is fixed to the side wall of the refrigerator body 5. In the present embodiment, as shown in FIG. 3, when the fixed rail 20 is attached, there is a vertical displacement h between the one slide rail unit 10A and the other slide rail unit 10B.
  • the storage case 50 is provided with mounting groove portions 51 that are open downward on both side surfaces and have a width that is one step larger than the width of the moving rail 40.
  • the mounting groove 51 is disposed so as to cover it, the bottom surface 52 of the mounting groove 51 is brought into contact with the top surface 42 of the moving rail 40, and the mounting bolt 53 is fastened and fixed to the mounting hole 43.
  • the slide rail units 10A and 10B, the moving rail 40 and the storage 50 are integrally slid relative to the intermediate rail 30.
  • the intermediate rail 30 slides with respect to the fixed rail 20 fixed to the refrigerator main body 55, and the storage 50 is configured to be greatly opened.
  • the intermediate rail 30 is arranged in the vertical direction. It has an upper support part 32A and a lower support part 32B extending in the direction intersecting with each other, and has a substantially C-shaped cross section. Etc. can be suppressed.
  • the moving rail 40 and the fixed rail 20 have a substantially C-shaped cross section, and are difficult to deform such as torsion and deflection with a large second moment of section.
  • the fixed rail 20 and the moving rail 40 have rolling grooves 21 and 41 formed on the inner surface and rolling grooves 34 of the upper ball guide portion 33A and the lower ball guide portion 33B in the cross section orthogonal to the longitudinal direction.
  • the straight lines are arranged so as to intersect at the center of the triangle formed by the upper ball guide portion 33A and the lower ball guide portion 33B.
  • the ball 11 is interposed between the intermediate rail 30 and the sliding movement can be performed smoothly.
  • the radius of curvature of the rolling grooves 21, 41 and the rolling grooves 34 is set to be larger than the radius of the ball 11, and the balls 11, the rolling grooves 21, 41, and the rolling grooves 34 are dotted. Since they are configured to come into contact with each other, even when the fixed rail 20 and the moving rail 40 are inclined, the sliding movement that does not hinder the rolling of the bow 11 can be performed smoothly.
  • the upper surface 42 of the moving rail 40 is formed flat, and a mounting hole 43 is formed between the two balls 11 and 11 positioned above the upper support portion 32A in the cross section orthogonal to the longitudinal direction.
  • the storage 50 can be easily attached to the upper surface 42 of the moving rail 40. wear.
  • the mounting groove portions 51 are formed on both side surfaces of the storage case 50, the storage case 50 is formed by bringing the bottom surface 52 of the mounting groove portion 51 into close contact with the upper surface 42 of the moving rail 40. Supported by moving rail 40.
  • the intermediate rail 30 has a substantially C-shaped cross section and the upper ball guide portion 33A and the lower ball guide portion 33B are bent into a substantially equilateral triangular shape, the metal plate is
  • the intermediate rail 30 can be formed by bending, and can be manufactured at low cost by roll forming or the like.
  • the moving rail 40 and the fixed rail 20 also have a substantially C-shaped cross section, and the rolling grooves 21 and 41 of the ball 11 are formed by bending, so that it can be manufactured at low cost by roll forming, etc. .
  • the protruding portion 44 that protrudes to one side of the fixed rail 20 is formed on one side surface of the moving rail 40, the container 50 attached to the moving rail 40 and The contact with the fixed rail 20 can be prevented, and the container 50 can be smoothly slid.
  • Modification 1 shown in FIG. 4 is formed by bending the upper ball guide portion 33A and the lower ball guide portion 33B of the intermediate rail 30 toward the inside of the C-shape formed by the cross section of the intermediate rail 30.
  • a rib 61 is formed on the main body 31 of the intermediate rail 30 to improve the rigidity.
  • the intermediate rail 30 is formed in an S-shaped cross section.
  • the moving rail 40 and the fixed rail 20 are assembled with respect to the intermediate rail 30 from opposite sides.
  • the ball 11 is viewed from the other side (left side in FIG. 6).
  • the upper ball guide portion 33A is formed so as to be shifted to one side of the lower ball guide portion 33B, and the moving rail 40 is located on one side of the fixed rail 20. It is configured.
  • the intermediate rail 30 is formed in an S-shaped cross section and the upper ball
  • the width direction positions of the guide portion 33A and the lower ball guide portion 33B are matched!
  • One side (right side in FIG. 7) end of the assembled moving rail 40 protrudes toward the one side of the fixed rail 20 toward the one side. 62 is provided. This prevents contact between the housing member attached to the moving rail 40 and the fixed rail 20.
  • Modification 5 shown in Fig. 8 is formed by reversing the bending directions of the upper ball guide portion 33A and the lower ball guide portion 33B of the intermediate rail 30 shown in Fig. 6.
  • the intermediate rail 30 is formed in an S-shaped cross section, and the bending angle is made gentle to facilitate forming by roll forming or the like.
  • the force S described for the slide rail unit according to the embodiment of the present invention is not limited to this, and can be appropriately changed without departing from the technical idea of the present invention.
  • the force described as the slide rail unit applied to the slide-type storage of the refrigerator may be applied to furniture drawers and paper trays of copying machines.
  • the slide rail unit of the present invention when fixing the fixed rail to the refrigerator main body of a resin molded product such as a refrigerator, it is particularly effective to apply the slide rail unit of the present invention because an attachment error is likely to occur due to deformation of the refrigerator main body. It is.
  • a mounting bolt is used as a method of attaching a storage (accommodating member) to the moving rail, other mounting methods may be applied without being limited thereto.
  • the shape of the intermediate rail may be set as appropriate in accordance with the required performance with a high degree of design freedom, as shown in the embodiments and modifications.

Landscapes

  • Bearings For Parts Moving Linearly (AREA)
  • Drawers Of Furniture (AREA)

Abstract

Provided is a slide rail unit including a stationary rail, an intermediate rail to be assembled with the stationary rail through a plurality of balls, and a moving rail to be assembled with the intermediate rail through a plurality of balls. In the longitudinal direction, the intermediate rail can slide relative to the stationary rail, and the moving rail can slide relative to the intermediate rail. The intermediate rail is equipped, at its upper and lower ends, with an upper supporting portion and a lower supporting portion extending in the direction intersecting with the vertical directions in a section normal to the longitudinal direction. The lower supporting portion is equipped with a lower ball guide portion which is sectionally formed into a generally isosceles triangle shape having a bottom side arranged above and which has rolling grooves formed in the individual side portions for the balls. The upper supporting portion is equipped with an upper ball guide portion which is sectionally formed into a generally isosceles triangle shape having a bottom side arranged below and which has rolling grooves formed in the individual side portions for the balls. With the lower supporting portion, there is assembled the stationary rail, which is formed into the generally C-shaped section having the rolling grooves for the balls. With the upper supporting portion, there is assembled the moving rail, which is formed into the generally C-shaped section having the rolling grooves for the balls and which has a flattened upper face. The moving rail is so arranged that it is stacked on the stationary rail.

Description

明 細 書  Specification
スライドレーノレユニット  Slide Lenore unit
技術分野  Technical field
[0001] 本発明は、固定レール、中間レール、移動レールを備え、長手方向において、前記 中間レールが前記固定レールに対しスライド可能であり、前記移動レールが前記中 間レールに対しスライド可能であるように構成とされたスライドレールユニットに関する ものである。  [0001] The present invention includes a fixed rail, an intermediate rail, and a moving rail, and in the longitudinal direction, the intermediate rail is slidable with respect to the fixed rail, and the moving rail is slidable with respect to the intermediate rail. The present invention relates to a slide rail unit configured as described above.
本願 (ま、 2006年 9月 28曰 ίこ出願された特願 2006— 265118号 ίこ対し優先権を 主張し、その内容をここに援用する。  This application (September 2006, patent application No. 2006-265118 filed on September 28, 2006) Priority is claimed, and the contents thereof are incorporated herein.
背景技術  Background art
[0002] 従来、家具やシステムキッチンの引き出し等の両側面には、スライド移動をスムース に行うために、それぞれスライドレールユニットが配設されたものが提供されている。 前述のスライドレールユニットとしては、例えば特許文献 1には、以下の構成のもの が提案されている。  Conventionally, there are provided slide rail units provided on both sides of furniture and system kitchen drawers for smooth sliding movement. As the slide rail unit described above, for example, Patent Document 1 proposes one having the following configuration.
固定レール及び移動レールは、概略平板状とされ、それぞれの上下端を長手方向 に沿って折り曲げることによりボールの転走溝を形成している。中間レールは、長手 方向に直交する断面が概略 I字状とされ、その上下端をそれぞれ両側面に向けて曲 げ起こすことによりボールの転動溝が形成されている。そして、中間レールの側面に 対向するように、それぞれ固定レール及び移動レールが配設され、対向配置された 転動溝と転走溝との間にボールが配置されている。  The fixed rail and the moving rail are substantially flat, and the rolling grooves of the ball are formed by bending the upper and lower ends of the fixed rail and the moving rail along the longitudinal direction. The intermediate rail has a substantially I-shaped cross section orthogonal to the longitudinal direction, and ball rolling grooves are formed by bending the upper and lower ends toward both side surfaces. Then, a fixed rail and a moving rail are respectively disposed so as to face the side surface of the intermediate rail, and a ball is disposed between the rolling groove and the rolling groove that are opposed to each other.
[0003] この構成のスライドレールユニットにおいては、固定レール及び移動レールは、その 上下端がボールを保持可能な程度に曲げ起こしただけの形状であり、これら固定レ ール及び移動レールの断面 2次モーメントが小さぐ荷重等により曲げモーメントやね じれモーメントが作用した場合に、変形を起こし易いものであった。また、引き出しの 両側面に配設されるスライドレールユニット同士の取り付け位置がずれた場合にも、 これら固定レール及び移動レールに曲げモーメントやねじれモーメントが作用して変 形してしまうおそれがあった。このように変形することにより、移動レールと中間レール 、中間レールと固定レールとの間に配置されたボールの転動が阻害され、スライド移 動をスムーズにできなくなってしまうといった問題があった。 [0003] In the slide rail unit having this configuration, the fixed rail and the moving rail are shaped so that the upper and lower ends thereof are bent so as to hold the ball. When a bending moment or twisting moment is applied by a load that has a small second moment, deformation is likely to occur. In addition, even when the slide rail units installed on both sides of the drawer are misaligned, there is a risk of bending and twisting moments acting on these fixed and moving rails. . By deforming in this way, the moving rail and the intermediate rail However, there is a problem in that the rolling of the ball arranged between the intermediate rail and the fixed rail is hindered and the sliding movement cannot be performed smoothly.
[0004] 一方、特許文献 2には、長手方向に直交する断面を概略 I字状とした中間レールの 上下端に、移動レール及び固定レールを上下方向に積み重ねるように配置したもの が提案されている。この構成のスライドレールユニットにおいては、移動レール及び固 定レールがそれぞれ幅広に構成されて断面 2次モーメントが大きくなり、曲げモーメン トゃねじれモーメントによる変形を抑制することが可能となる。 [0004] On the other hand, Patent Document 2 proposes an arrangement in which a moving rail and a fixed rail are stacked in the vertical direction on the upper and lower ends of an intermediate rail having a substantially I-shaped cross section perpendicular to the longitudinal direction. Yes. In the slide rail unit of this configuration, the moving rail and the fixed rail are each configured to be wide, and the secondary moment of the section is increased, so that deformation due to bending moment or torsional moment can be suppressed.
特許文献 1 :特開 2004— 113512号公報  Patent Document 1: JP 2004-113512 A
特許文献 2：特開昭 62— 215120号公報  Patent Document 2: Japanese Patent Laid-Open No. 62-215120
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0005] しかしながら、特許文献 2に記載されたスライドレールユニットでは、中間レールは、 その断面が概略 I字状とされ、幅が狭くて断面 2次モーメントが小さぐ曲げモーメント やねじれモーメントによって変形し易い形状とされている。中間レールが変形すること により、やはり、移動レールと中間レール、中間レールと固定レールとの間に配置さ れたボールの転動が阻害され、スライド移動をスムーズにできなくなってしまうといつ た問題があった。 [0005] However, in the slide rail unit described in Patent Document 2, the intermediate rail has a substantially I-shaped cross section, and is deformed by a bending moment or a torsional moment with a narrow width and a small secondary moment. It has an easy shape. When the intermediate rail is deformed, the rolling of the ball placed between the moving rail and the intermediate rail and between the intermediate rail and the fixed rail is hindered, and the sliding movement cannot be smoothly performed. was there.
[0006] 特に、冷蔵庫等のスライド式収容庫にスライドレールユニットを適用する場合には、 冷蔵庫本体が樹脂成形品であって固定レールを固定する際に変形し易ぐ収容庫 の両側面に配置されたスライドレールユニット同士を精度良く取り付けることができな い場合がある。この取付け誤差によって、固定レール、移動レール及び中間レール にねじれが生じてスライド移動をスムーズにできなくなるおそれがある。  [0006] In particular, when a slide rail unit is applied to a slide-type storage such as a refrigerator, the refrigerator body is a resin molded product and is arranged on both sides of the storage that easily deforms when fixing the fixed rail. In some cases, it is not possible to attach the slide rail units accurately. Due to this mounting error, the fixed rail, moving rail, and intermediate rail may be twisted and the sliding movement may not be smooth.
[0007] また、特許文献 2に記載のスライドレールユニットにおいては、中間レールが断面概 略 I字状に形成されていて、その上下端にそれぞれ固定レール及び移動レールが、 前記断面において 3つのボールを介して組み付けられている。ここで、一つのボール が中間レールの上下端面に配置されることになり、移動レールの上面にこのボール の転走溝を形成する必要がある。このため、移動レールの上面が上方に突出した形 状とされており、移動レールに引き出し等の部材を取り付けることが困難であった。 課題を解決するための手段 [0007] In addition, in the slide rail unit described in Patent Document 2, the intermediate rail is formed in a substantially I-shaped cross section, and a fixed rail and a moving rail are respectively provided on the upper and lower ends thereof, and three balls in the cross section. It is assembled through. Here, one ball is arranged on the upper and lower end surfaces of the intermediate rail, and it is necessary to form a rolling groove for this ball on the upper surface of the moving rail. For this reason, the upper surface of the moving rail has a shape protruding upward, and it is difficult to attach a member such as a drawer to the moving rail. Means for solving the problem
[0008] 本発明は、前述の事情に鑑みてなされたものであって、中間レール、移動レール及 び固定レールのねじれやたわみ等の変形を抑制して、取り付け誤差があってもスム ーズにスライド移動させることが可能であるとともに、移動レールに引き出し等の部材 を取り付けることが容易なスライドレールユニットを提供することを目的とする。 [0008] The present invention has been made in view of the above-described circumstances, and suppresses deformation such as torsion and deflection of the intermediate rail, the moving rail, and the fixed rail, so that even if there is an attachment error, the smoothness is achieved. It is an object of the present invention to provide a slide rail unit that can be slid and can be easily attached to a moving rail.
[0009] この課題を解決するために、本発明に係るスライドレールユニットは、固定レールと 、この固定レールに複数のボールを介して組み付けられる中間レールと、この中間レ ールに複数のボールを介して組み付けられる移動レールとを有し、長手方向におい て、前記中間レールが前記固定レールに対しスライド可能であり、前記移動レールが 前記中間レールに対しスライド可能であるように構成とされたスライドレールユニットで あって、前記中間レールの上下端には、長手方向に直交する断面において、上下方 向に対して交差する方向に延設された上方支持部及び下方支持部が設けられてお り、前記下方支持部には、断面が底辺を上方に配置した概略二等辺三角形状とされ 、この三角形の各辺稜部に前記ボールの転動溝が形成された下方ボールガイド部 が設けられ、前記上方支持部には、断面が底辺を下方に配置した概略二等辺三角 形状とされ、三角形の各辺稜部に前記ボールの転動溝が形成された上方ボールガ イド部が設けられ、前記下方支持部に、前記断面が概略 C字状をなして内面に前記 ボールの転走溝が形成された前記固定レールが組み付けられ、前記上方支持部に[0009] In order to solve this problem, a slide rail unit according to the present invention includes a fixed rail, an intermediate rail assembled to the fixed rail via a plurality of balls, and a plurality of balls on the intermediate rail. A slide rail configured to be slidable relative to the fixed rail in the longitudinal direction, and the movable rail is slidable relative to the intermediate rail in the longitudinal direction. The upper and lower ends of the intermediate rail are provided with an upper support portion and a lower support portion that extend in a direction intersecting with the upper and lower directions in a cross section perpendicular to the longitudinal direction. The lower support portion has a substantially isosceles triangle shape whose cross section is arranged with the base on the upper side, and a rolling groove for the ball is formed on each side ridge portion of the triangle. A ball guide portion is provided, and the upper support portion has an approximately isosceles triangular shape with a bottom disposed at the bottom, and a ball rolling groove is formed on each side ridge portion of the triangle. The lower support portion is assembled with the fixed rail having a substantially C-shaped cross section and formed with a rolling groove for the ball on the inner surface, and is attached to the upper support portion.
、前記断面が概略 C字状をなして内面に前記ボールの転走溝が形成されるとともに、 上面が平坦に形成された前記移動レールが組み付けられ、前記固定レールの上に 前記移動レールが積み重ねられるように配置されて!/、る。 The cross section is substantially C-shaped, the ball rolling groove is formed on the inner surface, the moving rail having a flat upper surface is assembled, and the moving rail is stacked on the fixed rail. Arranged to be! /
[0010] この構成のスライドレールユニットにおいては、中間レールが上下方向に対して交 差する方向に延設された上方支持部、下方支持部を有しているので、中間レールも 幅広な形状とされて断面 2次モーメントが大きくなり、ねじれ、たわみ等の変形を抑制 すること力 Sできる。また、移動レール及び固定レールも断面概略 C字状をなしていて 断面 2次モーメントが大きぐねじれ、たわみ等の変形しにくい形状とされている。 [0010] In the slide rail unit having this configuration, the intermediate rail has an upper support portion and a lower support portion that extend in a direction intersecting with the vertical direction, so the intermediate rail also has a wide shape. As a result, the moment of inertia of the cross section increases, and it is possible to suppress the deformation S such as torsion and deflection. In addition, the movable rail and fixed rail are also roughly C-shaped in cross section, and are difficult to deform such as torsion and deflection with a large secondary moment.
[0011] また、移動レール及び固定レールが組み付けられる上方支持部及び下方支持部 には、断面概略二等辺三角形状をなして各辺稜部に転動溝が設けられた上方ボー ルガイド部及び下方ボールガイド部が形成されているので、長手方向に直交する断 面において、移動レール及び固定レールは、前記転動溝に配置された 3つのボール を介して中間レールに支持されている。ここで、取り付け誤差や荷重等により移動レ ール及び固定レールにねじれモーメントが作用した場合には、移動レール及び固定 レールが、ボールに沿ってこれらボールガイド部回りに回転して傾くことになり、固定 レール、移動レール及び中間レールのねじれ変形を防止できる。 [0011] Further, the upper support portion and the lower support portion to which the moving rail and the fixed rail are assembled have an upper bow having a cross-sectional isosceles triangle shape and provided with a rolling groove on each side ridge portion. Since the guide rail and the lower ball guide are formed, the movable rail and the fixed rail are supported by the intermediate rail via the three balls arranged in the rolling groove on the cross section orthogonal to the longitudinal direction. Yes. Here, if a torsional moment is applied to the moving rail and fixed rail due to mounting errors, loads, etc., the moving rail and fixed rail will rotate and tilt around these ball guides along the ball. The torsional deformation of the fixed rail, moving rail and intermediate rail can be prevented.
さらに、移動レール及び固定レールが回転して傾いても、これらが前記断面におい て 3つのボールを介して中間レールに組み付けられているので、スライド移動をスム ーズに行うことができる。  Furthermore, even if the moving rail and the fixed rail are rotated and tilted, they are assembled to the intermediate rail via the three balls in the cross section, so that the sliding movement can be performed smoothly.
[0012] また、上方ボールガイド部は、断面が底辺を下方に配置した概略二等辺三角形状 とされているので、前記断面において 2つのボールが上方に配置されることになる。こ れにより、移動レールの上面の両端に前記ボールの転走溝を形成すればよぐ前記 上面を平坦に形成することが可能となる。よって、移動レールの上面に引き出し等の 部材を容易に取り付けることができる。  [0012] In addition, since the upper ball guide portion has a substantially isosceles triangular shape with the bottom arranged downward, the two balls are arranged upward in the cross section. This makes it possible to form the upper surface flat by forming the ball rolling grooves on both ends of the upper surface of the moving rail. Therefore, a member such as a drawer can be easily attached to the upper surface of the moving rail.
[0013] ここで、中間レールを、長手方向に直交する断面が概略 C字状をなすように形成し てもよい。  [0013] Here, the intermediate rail may be formed such that a cross section perpendicular to the longitudinal direction is substantially C-shaped.
この場合には、中間レールが一方向に開口する C字状とされているので、ロールフ ォーミング等によって成形しやすぐこのスライドレールユニットを低コストで製作する こと力 Sでさる。  In this case, since the intermediate rail has a C-shape opening in one direction, it can be formed by roll forming or the like, and this slide rail unit can be immediately manufactured at low cost.
[0014] また、中間レールを、長手方向に直交する断面が概略 S字状をなすように形成して あよい。  [0014] Further, the intermediate rail may be formed so that a cross section orthogonal to the longitudinal direction has a substantially S-shape.
この場合には、中間レールに対して移動レールと固定レールとが互いに反対側か ら組み付けられることになり、レールを引き出した状態において側面にボールの転動 溝が露出しないように構成することが可能となる。  In this case, the moving rail and the fixed rail are assembled to the intermediate rail from opposite sides, and the ball rolling groove is not exposed on the side surface when the rail is pulled out. It becomes possible.
[0015] また、長手方向に直交する断面において、前記移動レールの上面側に配置される 2つの前記ボールの間に、部材を取り付けるための取付部を前記移動レールに形成 しても良い。 [0015] Further, in the cross section orthogonal to the longitudinal direction, an attachment portion for attaching a member may be formed on the moving rail between the two balls arranged on the upper surface side of the moving rail.
この場合には、取付部を利用することで、引き出し等の収容部材を移動レールの上 面に容易に取り付けることができる。 In this case, by using the mounting part, the storage member such as the drawer can be Can be easily attached to a surface.
[0016] また、前記転動溝の曲率半径を、ボールの半径よりも大きく設定して前記ボールと 前記転動溝とが点接触するように構成し、前記ボールを、長手方向に直交する断面 において、 3つの前記ボールのそれぞれの中心、及び、前記 3つのボールと前記 3つ の転動溝がそれぞれ接触する 3つの接触点のそれぞれを結んだ 3つの直線力 前記 上方ボールガイド部あるいは前記下方ボールガイド部がなす三角形の略中心で交差 するように配置しても良い。 [0016] Further, the radius of curvature of the rolling groove is set to be larger than the radius of the ball so that the ball and the rolling groove are in point contact, and the ball has a cross section perpendicular to the longitudinal direction. In each of the above three balls, and the three linear forces connecting the three contact points where the three balls and the three rolling grooves contact each other, the upper ball guide portion or the lower portion The ball guides may be arranged so that they intersect at the approximate center of the triangle.
この場合、移動レール及び固定レール力 前記上方ボールガイド部あるいは前記 下方ボールガイド部がなす三角形の中心を回転中心としてさらに回転しやすくなり、 取り付け誤差や荷重等により移動レール及び固定レールにねじれモーメントが作用 した場合でも、固定レール、移動レール及び中間レールの変形を防止できるともに、 これらのレールのスライド移動をスムーズに行うことができる。  In this case, the moving rail and the fixed rail force are more easily rotated around the center of the triangle formed by the upper ball guide portion or the lower ball guide portion, and the torsional moment is applied to the moving rail and the fixed rail due to an attachment error or a load. Even if it acts, the deformation of the fixed rail, the moving rail and the intermediate rail can be prevented, and the sliding movement of these rails can be performed smoothly.
発明の効果  The invention's effect
[0017] 本発明によれば、中間レール、固定レール及び移動レールのねじれやたわみ等の 変形を抑制して、取り付け誤差があってもスムーズにスライド移動させることが可能で あるとともに、移動レールに引き出し等の部材を取り付けることが容易なスライドレー ルユニットを提供することができる。  [0017] According to the present invention, deformation such as twisting and deflection of the intermediate rail, the fixed rail, and the moving rail can be suppressed, and the slide rail can be smoothly moved even if there is an attachment error. It is possible to provide a slide rail unit in which a member such as a drawer can be easily attached.
図面の簡単な説明  Brief Description of Drawings
[0018] [図 1]図 1は、本発明の実施形態であるスライドレールユニットの斜視図である。  [0018] FIG. 1 is a perspective view of a slide rail unit according to an embodiment of the present invention.
[図 2]図 2は、図 1に示すスライドレールユニットの断面図である。  FIG. 2 is a cross-sectional view of the slide rail unit shown in FIG.
[図 3]図 3は、図 1に示すスライドユニットを冷蔵庫のスライド式収容庫に適用した例を 示す断面図である。  FIG. 3 is a cross-sectional view showing an example in which the slide unit shown in FIG. 1 is applied to a slide-type storage for a refrigerator.
[図 4]図 4は、本実施形態の変形例 1であるスライドレールユニットの断面図である。  FIG. 4 is a cross-sectional view of a slide rail unit that is Modification 1 of the present embodiment.
[図 5]図 5は、本実施形態の変形例 2であるスライドレールユニットの断面図である。  FIG. 5 is a cross-sectional view of a slide rail unit that is Modification 2 of the present embodiment.
[図 6]図 6は、本実施形態の変形例 3であるスライドレールユニットの断面図である。  FIG. 6 is a cross-sectional view of a slide rail unit that is a third modification of the present embodiment.
[図 7]図 7は、本実施形態の変形例 4であるスライドレールユニットの断面図である。  FIG. 7 is a cross-sectional view of a slide rail unit that is a fourth modification of the present embodiment.
[図 8]図 8は、本実施形態の変形例 5であるスライドレールユニットの断面図である。  FIG. 8 is a cross-sectional view of a slide rail unit that is Modification 5 of the present embodiment.
[図 9]図 9は、本実施形態の変形例 6であるスライドレールユニットの断面図である。 符号の説明 FIG. 9 is a cross-sectional view of a slide rail unit that is Modification 6 of the present embodiment. Explanation of symbols
[0019] 10 スライドレールユニット、 11 ボール、 20 固定レール、  [0019] 10 slide rail units, 11 balls, 20 fixed rails,
21 転走溝、 30 中間レール、 32A 上方支持部、 32B 下方支持部、 33A 上方 ボールガイド部、 33B 下方ボールガイド部、 34 転動溝、 40 移動レール、 41 転 走溝、 42 上面、 43 取付孔（取付部）  21 Rolling groove, 30 Intermediate rail, 32A Upper support, 32B Lower support, 33A Upper ball guide, 33B Lower ball guide, 34 Rolling groove, 40 Moving rail, 41 Rolling groove, 42 Upper surface, 43 Mounting Hole (mounting part)
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0020] 以下に、本発明の実施形態であるスライドレールユニットについて添付した図面を 参照して説明する。 Hereinafter, a slide rail unit according to an embodiment of the present invention will be described with reference to the accompanying drawings.
図 1及び図 2に、本発明の実施形態であるスライドレールユニット 10を示す。このス ライドレールユニット 10は、固定レール 20と、この固定レール 20に複数のボール 11 を介して組み付けられる中間レール 30と、この中間レール 30に複数のボール 11を 介して組み付けられる移動レール 40とを有して!/、る。  1 and 2 show a slide rail unit 10 according to an embodiment of the present invention. The slide rail unit 10 includes a fixed rail 20, an intermediate rail 30 that is assembled to the fixed rail 20 via a plurality of balls 11, and a movable rail 40 that is assembled to the intermediate rail 30 via a plurality of balls 11. Have! /
[0021] 中間レール 30は、図 2に示すように、長手方向に直交する断面が概略 C字状をなし ており、上下方向に延びる本体部 31と、この本体部 31の上端から一方側（図 2にお いて右側）に向けて突出する上方支持部 32Aと、本体部 31の下端から一方側に向 けて突出する下方支持部 32Bとを備えている。つまり、中間レール 30には上下方向 に対して交差する方向に延設された上方支持部 32A及び下方支持部 32Bが設けら れているのである。 As shown in FIG. 2, the intermediate rail 30 has a substantially C-shaped cross section perpendicular to the longitudinal direction, and a main body 31 extending in the vertical direction and one side from the upper end of the main body 31 ( An upper support portion 32A protruding toward the right side in FIG. 2 and a lower support portion 32B protruding from the lower end of the main body portion 31 toward one side are provided. That is, the intermediate rail 30 is provided with an upper support portion 32A and a lower support portion 32B extending in a direction intersecting the vertical direction.
[0022] 上方支持部 32Aには、前記断面が底辺を下方に配置した概略二等辺三角形状と された上方ボールガイド部 33Aが形成されて!/、る。この上方ボールガイド部 33Aがな す三角形の各辺稜部は、三角形の内側に向けて凹んでいて、ボール 11が転動する 転動溝 34とされている。これにより、前記断面において、上方ボールガイド部 33Aに は、上方に 2つのボール 11が配置され、下方に 1つのボール 11が配置されることに なる。なお、本実施形態においては、上方ボールガイド部 33Aの断面は概略正三角 形状をなしており、前記 3つのボール 11は、上方ボールガイド部 33Aがなす三角形 の中心を中心として、周方向に 120° 間隔に配置されている。  [0022] The upper support portion 32A is formed with an upper ball guide portion 33A having a substantially isosceles triangle shape whose cross section is arranged with the bottom side downward. Each side ridge portion of the triangle formed by the upper ball guide portion 33A is recessed toward the inside of the triangle, and serves as a rolling groove 34 on which the ball 11 rolls. As a result, in the cross section, the upper ball guide portion 33A has two balls 11 disposed above and one ball 11 disposed below. In the present embodiment, the upper ball guide portion 33A has a substantially regular triangular cross section, and the three balls 11 are 120 in the circumferential direction around the center of the triangle formed by the upper ball guide portion 33A. ° Arranged at intervals.
[0023] また、下方支持部 32Bには、前記断面が底辺を上方に配置した概略二等辺三角 形状とされた下方ボールガイド部 33Bが形成されて!/、る。この下方ボールガイド部 33 Bがなす三角形の各辺稜部は、三角形の内側に向けて凹んでいて、ボール 11が転 動する転動溝 34とされている。これにより、前記断面において、下方ボールガイド部 3 3Bには、下方に 2つのボール 11が配置され、上方に 1つのボール 11が配置されるこ とになる。なお、本実施形態においては、下方ボールガイド部 33Bの断面は概略正 三角形状をなしており、前記 3つのボール 11は、下方ボールガイド部 33Bがなす三 角形の中心を中心として、周方向に 120° 間隔に配置されている。 [0023] Further, the lower support portion 32B is formed with a lower ball guide portion 33B having a substantially isosceles triangular shape whose cross section is arranged with the base on the upper side. This lower ball guide part 33 Each side ridge portion of the triangle formed by B is recessed toward the inside of the triangle, and serves as a rolling groove 34 on which the ball 11 rolls. Thus, in the cross section, the lower ball guide portion 33B has two balls 11 disposed below and one ball 11 disposed above. In the present embodiment, the lower ball guide portion 33B has a substantially equilateral triangular cross section, and the three balls 11 are arranged in the circumferential direction around the center of the triangle formed by the lower ball guide portion 33B. They are arranged at 120 ° intervals.
[0024] また、本実施形態においては、上方ボールガイド部 33Aの下側に設けられた転動 溝 34と下方ボールガイド部 33Bの上側に設けられた転動溝 34と力 互いに対向する ように配置されており、これらの転動溝 34にそれぞれ収容されるボール 11、 11の幅 方向位置が一致するように構成されている。また、中間レール 30は、上下方向に 2分 割する基準面に対して対称な形状とされている。  [0024] In the present embodiment, the force is opposed to the rolling groove 34 provided on the lower side of the upper ball guide portion 33A and the rolling groove 34 provided on the upper side of the lower ball guide portion 33B. The balls 11 and 11 accommodated in the rolling grooves 34 are arranged so that the positions in the width direction coincide with each other. The intermediate rail 30 has a symmetrical shape with respect to a reference plane that is divided in the vertical direction.
[0025] さらに、転動溝 34の曲率半径は、ボール 11の半径よりも大きく設定されており、ボ ール 11と転動溝 34とが点接触するように構成されている。そして、前記断面におい て、 3つのボール 11のそれぞれの中心、及び、 3つのボーノレ 11と 3つの転動溝 34力 S それぞれ接触する 3つの接触点のそれぞれを結んだ 3つの直線（3つの直線の各々 は、 3つのボール 11の内の何れか 1つの中心、及び、この 1つのボール 1およびこの 1つのボール 1と接触する 1つの転動溝 34の接触点を結んだ直線である）は、上方ボ 一ルガイド部 33Aあるいは下方ボールガイド部 33Bがなす三角形の中心で交差する ように配置されている。  Furthermore, the radius of curvature of the rolling groove 34 is set to be larger than the radius of the ball 11, and the ball 11 and the rolling groove 34 are configured to make point contact. In the cross section, the three centers of the three balls 11 and the three straight lines (three straight lines) connecting the three Bonoles 11 and the three rolling grooves 34 force S and the three contact points respectively contacting each other. Is a straight line connecting the center of any one of the three balls 11 and the contact point of this one ball 1 and one rolling groove 34 that contacts this one ball 1) The upper ball guide portion 33A or the lower ball guide portion 33B are arranged so as to intersect at the center of the triangle.
[0026] 固定レール 20は、長手方向に直交する断面が概略 C字状をなしており、開口部が 他方側（図 2において左側）を向くようにして、下方ボールガイド部 33Bを包み込むよ うに組み付けられている。  [0026] The fixed rail 20 has a substantially C-shaped cross section orthogonal to the longitudinal direction, and wraps around the lower ball guide portion 33B so that the opening faces the other side (left side in FIG. 2). It is assembled.
[0027] 固定レール 20の内面には、長手方向に延びる 3条の転走溝 21が設けられており、 これらの転走溝 21は、中間レール 30に組み付けられた状態で、下方ボールガイド部 33Bの 3つの転動溝 34とそれぞれ対向するように配置されている。ここで、転走溝 21 は、固定レール 20が長手方向に沿って折り曲げられることにより形成されており、転 走溝 21の曲率半径は、ボール 11の半径よりも大きく設定され、ボール 11と転走溝 2 1とが点接触するように構成されている。 ボール 11は、下方ボールガイド部 33Bの転動溝 34と固定レール 20の転走溝 21と の間を転動し、固定レール 20に対し中間レール 30を長手方向にスライド移動させる [0027] Three rolling grooves 21 extending in the longitudinal direction are provided on the inner surface of the fixed rail 20, and these rolling grooves 21 are assembled to the intermediate rail 30 in the lower ball guide portion. The three rolling grooves 34 of 33B are arranged so as to face each other. Here, the rolling groove 21 is formed by bending the fixed rail 20 along the longitudinal direction, and the radius of curvature of the rolling groove 21 is set to be larger than the radius of the ball 11, so It is configured to make point contact with the running groove 21. The ball 11 rolls between the rolling groove 34 of the lower ball guide portion 33B and the rolling groove 21 of the fixed rail 20, and slides the intermediate rail 30 in the longitudinal direction relative to the fixed rail 20.
[0028] また、固定レール 20の他方側の側壁部には、他方側に向けて延びるとともにさらに 上方に向けて延設され、例えば後述する冷蔵庫本体 55の側壁に装着される装着部 22が設けられている。この装着部 22には、後述する固定ボルト 57を揷通するための 揷通孔 23が設けられて!/、る。 [0028] In addition, the other side wall portion of the fixed rail 20 is provided with a mounting portion 22 that extends toward the other side and extends further upward, for example, to be mounted on the side wall of the refrigerator main body 55 described later. It has been. The mounting portion 22 is provided with a through hole 23 for passing a fixing bolt 57 described later!
[0029] 移動レール 40は、固定レール 20と同様に、長手方向に直交する断面が概略 C字 状をなしており、開口部が他方側（図 2において左側）を向くようにして、上方ボール ガイド部 33Aの周囲を包み込むように組み付けられている。  [0029] Similar to the fixed rail 20, the movable rail 40 has a substantially C-shaped cross section perpendicular to the longitudinal direction, and the upper ball is oriented so that the opening faces the other side (left side in FIG. 2). It is assembled to wrap around the guide part 33A.
移動レール 40の内面には、長手方向に延びる 3条の転走溝 41が設けられており、 これらの転走溝 41は、中間レール 30に組み付けられた状態で、上方ボールガイド部 33Aの 3つの転動溝 34とそれぞれ対向するように配置されている。ここで、転走溝 41 は、移動レール 40が長手方向に沿って折り曲げられることにより形成されており、転 走溝 41の曲率半径は、ボール 11の半径よりも大きく設定され、ボール 11と転走溝 4 1とが点接触するように構成されている。  The inner surface of the moving rail 40 is provided with three rolling grooves 41 extending in the longitudinal direction, and these rolling grooves 41 are assembled to the intermediate rail 30 in the upper ball guide portion 33A 3. The two rolling grooves 34 are arranged so as to face each other. Here, the rolling groove 41 is formed by bending the moving rail 40 along the longitudinal direction, and the radius of curvature of the rolling groove 41 is set to be larger than the radius of the ball 11, and the rolling groove 41 and the ball 11 are rolled. It is configured to make point contact with the running groove 4 1.
ボール 11は、上方ボールガイド部 33Aの転動溝 34と移動レール 40の転走溝 41と の間を転動し、移動レール 40を中間レール 30に対し長手方向にスライド移動させる  The ball 11 rolls between the rolling groove 34 of the upper ball guide portion 33A and the rolling groove 41 of the moving rail 40, and slides the moving rail 40 in the longitudinal direction relative to the intermediate rail 30.
[0030] 移動レール 40の上面 42は、上下方向に対して直交するように延びる平面状に形 成されており、この上面 42の両端が折り曲げられて、上方ボールガイド部 33Aの上 方に向けられた 2つの転動溝 34 34にそれぞれ対向する 2つの転走溝 41 41が形 成されている。また、この移動レール 40の上面 42には、後述する収容庫 50等の収容 部材を取り付けるための取付孔 43が形成されている。 [0030] The upper surface 42 of the moving rail 40 is formed in a planar shape extending so as to be orthogonal to the vertical direction, and both ends of the upper surface 42 are bent toward the upper side of the upper ball guide portion 33A. Two rolling grooves 41 41 are formed respectively opposite to the two rolling grooves 34 34 formed. An attachment hole 43 for attaching a storage member such as a storage 50 described later is formed on the upper surface 42 of the moving rail 40.
さらに、移動レール 40の一方側の側壁面には、前記固定レール 20よりも一方側に 向けて突出した突出部 44が形成されている。  Further, a protruding portion 44 that protrudes toward one side of the fixed rail 20 is formed on the side wall surface on one side of the moving rail 40.
[0031] これら中間レール 30、移動レール 40及び固定レール 20は、金属板をロールフォー ミングすることで成形することが可能である。また、プレス機を用いた曲げ加工や引き 抜き、押出加工によっても成形することができる。 [0031] The intermediate rail 30, the moving rail 40, and the fixed rail 20 can be formed by roll forming a metal plate. Also, bending and drawing using a press machine It can also be formed by punching or extrusion.
[0032] また、中間レール 30の下方ボールガイド部 33Bと固定レール 20との間の隙間、中 間レール 30の上方ボールガイド部 33Aと移動レール 40との間の隙間には、ボール 1 1を長手方向の所定の位置に整列させるためのリテーナ（図示なし）が介装されてい る。リテーナには、ボール 11の直径よりも僅かに大径とされたボール保持孔（図示な し）が穿設されており、ボール 11は、これらボール保持孔内に収容された状態で転動 するように構成されている。なお、本実施形態においては、リテーナは合成樹脂によ り構成されている。 [0032] Further, in the gap between the lower ball guide portion 33B of the intermediate rail 30 and the fixed rail 20, and the gap between the upper ball guide portion 33A of the intermediate rail 30 and the moving rail 40, the balls 11 A retainer (not shown) is arranged for alignment at a predetermined position in the longitudinal direction. The retainer is provided with a ball holding hole (not shown) having a diameter slightly larger than the diameter of the ball 11, and the ball 11 rolls while being accommodated in the ball holding hole. It is configured as follows. In this embodiment, the retainer is made of a synthetic resin.
[0033] このような構成とされたスライドレールユニット 10は、例えば冷蔵庫のスライド式収容 庫 50に取り付けられて使用される。図 3に、本実施形態であるスライドレールユニット 10が適用された収容庫 50のスライド方向に直交する断面図を示す。  [0033] The slide rail unit 10 having such a configuration is used by being attached to a slide-type storage 50 of a refrigerator, for example. FIG. 3 shows a cross-sectional view orthogonal to the sliding direction of the storage case 50 to which the slide rail unit 10 according to the present embodiment is applied.
[0034] 収容庫 50の両側面に、本実施形態であるスライドレールユニット 10A、 10Bがそれ ぞれ配置されている。  [0034] The slide rail units 10A and 10B according to the present embodiment are arranged on both side surfaces of the storage case 50, respectively.
固定レール 20の装着部 22に形成された揷通孔 23に固定ボルト 57が揷通され、こ の固定ボルト 57が冷蔵庫本体 55の側壁に設けられたボルト孔 56に螺着されることに より、固定レール 20が冷蔵庫本体 5の側壁に固定されている。なお、本実施形態に おいては、図 3に示すように、固定レール 20の取り付けにおいて、一のスライドレール ユニット 10Aと他のスライドレールユニット 10Bとで、上下方向にずれ hが生じている。  A fixing bolt 57 is passed through a through hole 23 formed in the mounting portion 22 of the fixed rail 20, and this fixing bolt 57 is screwed into a bolt hole 56 provided on the side wall of the refrigerator main body 55. The fixed rail 20 is fixed to the side wall of the refrigerator body 5. In the present embodiment, as shown in FIG. 3, when the fixed rail 20 is attached, there is a vertical displacement h between the one slide rail unit 10A and the other slide rail unit 10B.
[0035] 収容庫 50は、その両側面に、下側に向けて開口するとともに幅が前記移動レール 40の幅よりも一段大きくされた取付溝部 51が設けられており、移動レール 40の上に この取付溝部 51を被せるようにして配置され、取付溝部 51の底面 52が移動レール 4 0の上面 42に当接され、取付孔 43に取付ボルト 53が締結されて固定されている。  The storage case 50 is provided with mounting groove portions 51 that are open downward on both side surfaces and have a width that is one step larger than the width of the moving rail 40. The mounting groove 51 is disposed so as to cover it, the bottom surface 52 of the mounting groove 51 is brought into contact with the top surface 42 of the moving rail 40, and the mounting bolt 53 is fastened and fixed to the mounting hole 43.
[0036] このスライド式の収容庫 50を冷蔵庫本体 55から引き出す際には、スライドレールュ ニット 10A、 10Bの移動レール 40と収容庫 50とが一体となって中間レール 30に対し てスライド移動するとともに、中間レール 30が冷蔵庫本体 55に固定された固定レー ル 20に対してスライド移動することになり、収容庫 50が大きく開口させられる構成とさ れている。  [0036] When the slide-type storage 50 is pulled out of the refrigerator main body 55, the slide rail units 10A and 10B, the moving rail 40 and the storage 50, are integrally slid relative to the intermediate rail 30. At the same time, the intermediate rail 30 slides with respect to the fixed rail 20 fixed to the refrigerator main body 55, and the storage 50 is configured to be greatly opened.
[0037] 本実施形態であるスライドレールユニット 10によれば、中間レール 30が上下方向に 対して交差する方向に延設された上方支持部 32A及び下方支持部 32Bを有してお り、断面概略 C字状をなしているので、断面 2次モーメントが大きくなり、ねじれ、たわ み等の変形を抑制することができる。同様に、移動レール 40及び固定レール 20も断 面概略 C字状をなしていて断面 2次モーメントが大きぐねじれ、たわみ等の変形しに くい形状とされている。 [0037] According to the slide rail unit 10 of the present embodiment, the intermediate rail 30 is arranged in the vertical direction. It has an upper support part 32A and a lower support part 32B extending in the direction intersecting with each other, and has a substantially C-shaped cross section. Etc. can be suppressed. Similarly, the moving rail 40 and the fixed rail 20 have a substantially C-shaped cross section, and are difficult to deform such as torsion and deflection with a large second moment of section.
[0038] また、固定レール 20及び移動レール 40は、長手方向に直交する断面において、 内面に形成された転走溝 21、 41と上方ボールガイド部 33A及び下方ボールガイド 部 33Bの転動溝 34との間に配置された 3つのボール 11を介して中間レール 30に支 持されており、これら 3つのボール 11のそれぞれの中心と転動溝 34とのぞれぞれの 接触点とを結んだ直線は、上方ボールガイド部 33A及び下方ボールガイド部 33Bが なす三角形の中心で交差するように配置されている。  [0038] Further, the fixed rail 20 and the moving rail 40 have rolling grooves 21 and 41 formed on the inner surface and rolling grooves 34 of the upper ball guide portion 33A and the lower ball guide portion 33B in the cross section orthogonal to the longitudinal direction. Are supported by the intermediate rail 30 via three balls 11 arranged between them and the center of each of these three balls 11 and the contact point of each of the rolling grooves 34. The straight lines are arranged so as to intersect at the center of the triangle formed by the upper ball guide portion 33A and the lower ball guide portion 33B.
したがって、例えば図 3に示すように取り付け時のずれ hにより、中間レール 30にね じれモーメントが作用した場合でも、固定レール 20と中間レール 30と力 ボール 11 に沿って下方ボールガイド部 33Bの三角形の中心を回転中心として矢印 X方向に相 対的に回転することになり、固定レール 20及び中間レール 30の変形を防止できる。 同様に、収容庫 50に荷重が作用して移動レール 40にねじれモーメントが作用する 場合でも、移動レール 40が、ボール 11に沿って上方ボールガイド部 33Aの三角形 の中心を回転中心として回転し、移動レール 40及び中間レール 30の変形を防止で きる。  Therefore, for example, as shown in FIG. 3, even when a twisting moment is applied to the intermediate rail 30 due to the displacement h at the time of mounting, the triangular shape of the lower ball guide portion 33B along the fixed rail 20, the intermediate rail 30, and the force ball 11 As a result, the fixed rail 20 and the intermediate rail 30 can be prevented from being deformed. Similarly, even when a load acts on the storage 50 and a torsional moment acts on the moving rail 40, the moving rail 40 rotates along the ball 11 around the center of the triangle of the upper ball guide portion 33A, The deformation of the moving rail 40 and the intermediate rail 30 can be prevented.
[0039] さらに、固定レール 20及び移動レール 40が回転して傾いても、中間レール 30との 間にボール 11が介在することになり、スライド移動をスムーズに行うことができる。また 、本実施形態では、転走溝 21、 41及び転動溝 34の曲率半径は、ボール 11の半径 よりも大きく設定され、ボール 11と転走溝 21、 41及び転動溝 34とが点接触するよう に構成されているので、固定レール 20及び移動レール 40が傾いた場合でも、ボー ノレ 11の転動を妨げることがなぐスライド移動をスムーズに行うことができる。  [0039] Further, even if the fixed rail 20 and the moving rail 40 are rotated and inclined, the ball 11 is interposed between the intermediate rail 30 and the sliding movement can be performed smoothly. In this embodiment, the radius of curvature of the rolling grooves 21, 41 and the rolling grooves 34 is set to be larger than the radius of the ball 11, and the balls 11, the rolling grooves 21, 41, and the rolling grooves 34 are dotted. Since they are configured to come into contact with each other, even when the fixed rail 20 and the moving rail 40 are inclined, the sliding movement that does not hinder the rolling of the bow 11 can be performed smoothly.
[0040] また、移動レール 40の上面 42が平坦に形成され、長手方向に直交する断面にお V、て上方支持部 32Aの上方に位置する 2つのボール 11、 11の間に取付孔 43が形 成されているので、移動レール 40の上面 42に収容庫 50を容易に取り付けることがで きる。なお、本実施形態においては、収容庫 50の両側面に取付溝部 51が形成され ているので、この取付溝部 51の底面 52と移動レール 40の上面 42とを密着させること で、収容庫 50が移動レール 40に支持される。 [0040] Further, the upper surface 42 of the moving rail 40 is formed flat, and a mounting hole 43 is formed between the two balls 11 and 11 positioned above the upper support portion 32A in the cross section orthogonal to the longitudinal direction. The storage 50 can be easily attached to the upper surface 42 of the moving rail 40. wear. In the present embodiment, since the mounting groove portions 51 are formed on both side surfaces of the storage case 50, the storage case 50 is formed by bringing the bottom surface 52 of the mounting groove portion 51 into close contact with the upper surface 42 of the moving rail 40. Supported by moving rail 40.
[0041] また、中間レール 30が断面概略 C字状をなすとともに、上方ボールガイド部 33A及 び下方ボールガイド部 33Bが断面概略正三角形状に折り曲げられた構成とされてい るので、金属板を折り曲げることでこの中間レール 30を成形することができ、ロールフ ォーミング等により低コストで製作することができる。 [0041] Further, since the intermediate rail 30 has a substantially C-shaped cross section and the upper ball guide portion 33A and the lower ball guide portion 33B are bent into a substantially equilateral triangular shape, the metal plate is The intermediate rail 30 can be formed by bending, and can be manufactured at low cost by roll forming or the like.
移動レール 40、固定レール 20も断面概略 C字状をなすとともに、ボール 11の転走 溝 21、 41が折り曲げて形成されているので、ロールフォーミング等により低コストで製 作すること力 Sでさる。  The moving rail 40 and the fixed rail 20 also have a substantially C-shaped cross section, and the rolling grooves 21 and 41 of the ball 11 are formed by bending, so that it can be manufactured at low cost by roll forming, etc. .
[0042] さらに、本実施形態においては、移動レール 40の一方側の側面に固定レール 20 よりも一方側に突出する突出部 44が形成されているので、移動レール 40に取り付け た収容庫 50と固定レール 20との接触を防止でき、収容庫 50のスライド移動をスムー ズに行うことができる。  Furthermore, in the present embodiment, since the protruding portion 44 that protrudes to one side of the fixed rail 20 is formed on one side surface of the moving rail 40, the container 50 attached to the moving rail 40 and The contact with the fixed rail 20 can be prevented, and the container 50 can be smoothly slid.
[0043] 次に、本実施形態の変形例について説明する。  Next, a modification of the present embodiment will be described.
図 4に示す変形例 1は、中間レール 30の上方ボールガイド部 33A及び下方ボール ガイド部 33B力 中間レール 30の断面がなす C字の内側に向かって折り曲げられる ことで形成されている。  Modification 1 shown in FIG. 4 is formed by bending the upper ball guide portion 33A and the lower ball guide portion 33B of the intermediate rail 30 toward the inside of the C-shape formed by the cross section of the intermediate rail 30.
図 5に示す変形例 2は、中間レール 30の本体部 31にリブ 61を形成して剛性を向上 させたものである。  In Modification 2 shown in FIG. 5, a rib 61 is formed on the main body 31 of the intermediate rail 30 to improve the rigidity.
[0044] 図 6に示す変形例 3は、中間レール 30が断面 S字状に形成されたものである。この 場合、中間レール 30に対して移動レール 40と固定レール 20とが互いに反対側から 組み付けられることになり、これらのレールを引き出した状態において、他方側（図 6 において左側）から見てボール 11が露出しないように構成することができる。なお、変 形例 3にお!/、ては、上方ボールガイド部 33Aが下方ボールガイド部 33Bよりも一方側 にずれて形成され、固定レール 20よりも一方側に移動レール 40が位置するように構 成されている。  [0044] In Modification 3 shown in Fig. 6, the intermediate rail 30 is formed in an S-shaped cross section. In this case, the moving rail 40 and the fixed rail 20 are assembled with respect to the intermediate rail 30 from opposite sides. When these rails are pulled out, the ball 11 is viewed from the other side (left side in FIG. 6). Can be configured not to be exposed. In the third modification, the upper ball guide portion 33A is formed so as to be shifted to one side of the lower ball guide portion 33B, and the moving rail 40 is located on one side of the fixed rail 20. It is configured.
[0045] 図 7に示す変形例 4は、中間レール 30を断面 S字状に形成するとともに上方ボール ガイド部 33Aと下方ボールガイド部 33Bの幅方向位置が一致させられて!/、る。ただし 、他方側（図 7にお!/、て左側）力 組み付けられた移動レール 40の一方側（図 7にお いて右側）端部に固定レール 20よりも一方側に向けて突出したツバ部 62が設けられ ている。これにより、移動レール 40に取り付けられた収容部材と固定レール 20との接 触を防止している。 [0045] In Modification 4 shown in Fig. 7, the intermediate rail 30 is formed in an S-shaped cross section and the upper ball The width direction positions of the guide portion 33A and the lower ball guide portion 33B are matched! However, the other side (FIG. 7! /, Left side) force One side (right side in FIG. 7) end of the assembled moving rail 40 protrudes toward the one side of the fixed rail 20 toward the one side. 62 is provided. This prevents contact between the housing member attached to the moving rail 40 and the fixed rail 20.
[0046] 図 8に示す変形例 5は、図 6に示す中間レール 30の上方ボールガイド部 33A及び 下方ボールガイド部 33Bの折り曲げ方向を逆にして成形したものである。  [0046] Modification 5 shown in Fig. 8 is formed by reversing the bending directions of the upper ball guide portion 33A and the lower ball guide portion 33B of the intermediate rail 30 shown in Fig. 6.
図 9に示す変形例 6は、中間レール 30を断面 S字状に形成するとともに、折り曲げ 角度を緩やかにしてロールフォーミング等による成形を容易にしたものである。  In Modification 6 shown in FIG. 9, the intermediate rail 30 is formed in an S-shaped cross section, and the bending angle is made gentle to facilitate forming by roll forming or the like.
[0047] 以上、本発明の実施形態であるスライドレールユニットについて説明した力 S、本発 明はこれに限定されることはなぐその発明の技術的思想を逸脱しない範囲で適宜 変更可能である。 As described above, the force S described for the slide rail unit according to the embodiment of the present invention, the present invention is not limited to this, and can be appropriately changed without departing from the technical idea of the present invention.
例えば、冷蔵庫のスライド式収容庫に適用されるスライドレールユニットとして説明し た力 これに限定されることはなぐ家具の引き出しや複写機のペーパートレイに適用 するものであってもよい。ただし、冷蔵庫等のように樹脂成形品の冷蔵庫本体に固定 レールを固定する場合には、冷蔵庫本体の変形等により取り付け誤差が生じやすい ので、本発明のスライドレールユニットを適用することが特に効果的である。  For example, the force described as the slide rail unit applied to the slide-type storage of the refrigerator may be applied to furniture drawers and paper trays of copying machines. However, when fixing the fixed rail to the refrigerator main body of a resin molded product such as a refrigerator, it is particularly effective to apply the slide rail unit of the present invention because an attachment error is likely to occur due to deformation of the refrigerator main body. It is.
[0048] また、移動レールに収容庫 (収容部材）を取り付ける方式として取付ボルトを利用し たものとして説明したが、これに限定されることはなぐ他の取付方法を適用しても良 い。 [0048] In addition, although it has been described that a mounting bolt is used as a method of attaching a storage (accommodating member) to the moving rail, other mounting methods may be applied without being limited thereto.
さらに、中間レールの形状については、実施形態及び変形例に示すように、設計の 自由度が高ぐ要求される性能に併せて適宜設定してもよい。  Furthermore, the shape of the intermediate rail may be set as appropriate in accordance with the required performance with a high degree of design freedom, as shown in the embodiments and modifications.

Claims

請求の範囲 The scope of the claims
[1] 固定レールと、この固定レールに複数のボールを介して組み付けられる中間レー ルと、この中間レールに複数のボールを介して組み付けられる移動レールとを有し、 長手方向において、前記中間レールが前記固定レールに対しスライド可能であり、 前記移動レールが前記中間レールに対しスライド可能であるように構成とされたスラ イドレールユニットであって、  [1] A fixed rail, an intermediate rail that is assembled to the fixed rail via a plurality of balls, and a moving rail that is assembled to the intermediate rail via a plurality of balls. Is a slide rail unit configured to be slidable with respect to the fixed rail, and the movable rail is slidable with respect to the intermediate rail,
前記中間レールの上下端には、長手方向に直交する断面において、上下方向に 対して交差する方向に延設された上方支持部及び下方支持部が設けられており、 前記下方支持部には、断面が底辺を上方に配置した概略二等辺三角形状とされ、 この三角形の各辺稜部に前記ボールの転動溝が形成された下方ボールガイド部が 設けられ、  The upper and lower ends of the intermediate rail are provided with an upper support portion and a lower support portion that extend in a direction intersecting with the vertical direction in a cross section perpendicular to the longitudinal direction. The cross-section is a substantially isosceles triangle shape with the base positioned upward, and a lower ball guide portion in which a rolling groove of the ball is formed on each side ridge portion of the triangle is provided,
前記上方支持部には、断面が底辺を下方に配置した概略二等辺三角形状とされ、 三角形の各辺稜部に前記ボールの転動溝が形成された上方ボールガイド部が設け られ、  The upper support portion is provided with an upper ball guide portion in which the cross-section is a substantially isosceles triangle shape with the bottom arranged downward, and a ball rolling groove is formed on each side ridge portion of the triangle,
前記下方支持部に、前記断面が概略 C字状をなして内面に前記ボールの転走溝 が形成された前記固定レールが組み付けられ、  The lower support part is assembled with the fixed rail in which the cross section is substantially C-shaped and the ball rolling groove is formed on the inner surface,
前記上方支持部に、前記断面が概略 C字状をなして内面に前記ボールの転走溝 が形成されるとともに、上面が平坦に形成された前記移動レールが組み付けられ、 前記固定レールの上に前記移動レールが積み重ねられるように配置されて!/、るス ライドレーノレユニット。  The upper support portion is assembled with the moving rail having a flat upper surface and a rolling groove for the ball formed on the inner surface of the upper support portion. The slide rail unit is arranged so that the moving rails are stacked! /.
[2] 前記中間レールは、長手方向に直交する断面が概略 C字状をなしている請求項 1 に記載のスライドレールユニット。  [2] The slide rail unit according to claim 1, wherein the intermediate rail has a substantially C-shaped cross section orthogonal to the longitudinal direction.
[3] 前記中間レールは、長手方向に直交する断面が概略 S字状をなしている請求項 1 に記載のスライドレールユニット。 [3] The slide rail unit according to claim 1, wherein the intermediate rail has a substantially S-shaped cross section orthogonal to the longitudinal direction.
[4] 長手方向に直交する断面において、前記移動レールの上面側に配置される 2つの 前記ボールの間に、部材を取り付けるための取付部が前記移動レールに形成されて[4] In the cross section orthogonal to the longitudinal direction, an attachment portion for attaching a member is formed on the moving rail between the two balls arranged on the upper surface side of the moving rail.
V、る請求項 1に記載のスライドレールユニット。 The slide rail unit according to claim 1, wherein the slide rail unit is V.
[5] 前記転動溝の曲率半径は、前記ボールの半径よりも大きく設定され、前記ボールと 前記転動溝とが点接触するように構成されており、 [5] The radius of curvature of the rolling groove is set larger than the radius of the ball, The rolling groove is configured to make point contact,
前記ボールは、長手方向に直交する断面において、 3つの前記ボールのそれぞれ の中心、及び、前記 3つのボールと前記 3つの転動溝がそれぞれ接触する 3つの接 触点のそれぞれを結んだ 3つの直線が、前記上方ボールガイド部あるいは前記下方 ボールガイド部がなす三角形の略中心で交差するように配置されている請求項 1に 記載のスライドレールユニット。  In the cross-section perpendicular to the longitudinal direction, the ball is connected to the center of each of the three balls and the three contact points where the three balls and the three rolling grooves contact each other. 2. The slide rail unit according to claim 1, wherein the straight rails are arranged so as to intersect at an approximate center of a triangle formed by the upper ball guide portion or the lower ball guide portion.
PCT/JP2007/065944 2006-09-28 2007-08-16 Slide rail unit WO2008038472A1 (en)

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WO2021024826A1 (en) * 2019-08-05 2021-02-11 マレリ株式会社 Drawer type storage box
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EP3981291A4 (en) * 2020-08-25 2022-04-13 Dongguan Dige Hardware Products Co., Ltd. Sliding rail assembly and cabinet comprising same

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