CN102283520A

CN102283520A - guide rail structure of drawer

Info

Publication number: CN102283520A
Application number: CN2010102066109A
Authority: CN
Inventors: 李绍汉
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-21
Filing date: 2010-06-21
Publication date: 2011-12-21

Abstract

The invention provides a guide rail structure of a drawer, belonging to hardware products. The guide rail structure of the drawer provided by the invention comprises an outer rail, a middle rail and an inner rail, wherein the sections of the outer rail and the inner rail are substantially of inverted U shapes; the inner rail is provided with an inverted triangular section; a first roller horizontally placed in an axial direction is arranged between a horizontal edge of the outer rail and a horizontal edge of the middle rail; a second roller horizontally placed in an axial direction is arranged between the horizontal edge of the middle rail and a horizontal edge of the inner rail; first bending parts are arranged on the tail ends of two erect edges of the outer rail; second bending parts and third bending parts are arranged on the two erect edges of the middle rail; the second bending parts are positioned above the erect edges of the middle rail and opposite to the first bending parts of the outer rail; the third bending parts are positioned below the second bending parts and opposite to inclined edges of the inner rail; first balls are embedded between the first bending parts and the second bending parts; and second balls are embedded between the third bending parts and the inclined edges of the inner rail. The guide rail structure of the drawer provided by the invention has the advantages of less parts, thin material, lower production cost and suitability for being mounted on all furniture.

Description

The drawer guideway structure

Technical field

The present invention relates to hardware, particularly a kind of furniture guide rail.

Background technology

Three common joint drawer guideways are made up of retaining rail, mid-rail and movable rail (outer rail, middle rail and interior rail), and for the bearing capacity and the smoothness that improve guide rail, manufacturer constantly improves guide rail structure.

The utility model patent (applying date 2007-11-28, publication number CN201127427Y) that name is called " rectangular guideway " discloses a kind of three joint drawer guideways, its third rail and first rail cross section are all rectangular, the cross section of second rail is T-shaped, the first rail is enclosed in outside third rail, third rail is enclosed in outside the first rail, has a pad rail to be fixed in above the first rail; 4 interior angles of first rail have the arc ditch, between 4 interior angles of first rail and the second rail ball are arranged, and the crossbeam both ends in " T " cross section of second rail have the arc ditch to contact with ball, and the both sides waist in " T " cross section of second rail has the arc ditch to contact with ball; There is the arc ditch interior angle of third rail and two inboards, and there is the arc ditch in two outsides of first rail, and the pad rail has the arc ditch on two corners, between the third rail inwall and the pad rail ball are arranged, and between the third rail inwall and the first trackside wall ball are arranged, and between the third rail inwall and the pad rail change gear are arranged.This guide rail has all disposed 4 or 4 above ball/roller between the rails as support at adjacent two joints, has eliminated inherent bad gap effectively.But the part of this guide rail is more, causes production technology complicated, and cost is higher, therefore need improve.

Summary of the invention

The object of the present invention is to provide a kind of simple in structure, smooth operation along the drawer guideway structure sliding, that load capacity is big.

The present invention includes outer rail, middle rail and interior rail, the cross section of outer rail and middle rail roughly is ∏ shape, and interior rail has the del cross section, between outer rail and the middle rail first retainer is arranged, and between middle rail and the interior rail second retainer is arranged; It is characterized in that between the horizontal sides of the horizontal sides of outer rail and middle rail the axially first horizontally disposed roller being arranged, the axial second horizontally disposed roller is arranged between the horizontal sides of middle rail and the horizontal sides of interior rail; The end of outer rail two upstanding edges all has first bending part; In two upstanding edges of rail second bending part and three bending parts are all arranged, second bending part is in the top of middle rail upstanding edge and relative with first bending part of outer rail, the 3rd bending part is in the below of second bending part and relative with the hypotenuse of interior rail; Assembly has first ball between first bending part and second bending part, and assembly has second ball between the hypotenuse of the 3rd bending part and interior rail; First roller and first ball are all retrained by first retainer, and second roller and second ball are all retrained by second retainer.

As a further improvement on the present invention, one or more among the hypotenuse of first bending part, second bending part, the 3rd bending part and interior rail have the arc ditch.

As another improvement of the present invention, first bending part is two-fold bending.

Guide rail structure compared with prior art, the present invention by outer, in, horizontal sides and two rollers of interior rail transmit pressure at right angles, utilize four balls keep outer, in, the horizontal connection between the interior rail, such structure is more reasonable, weight capacity is stronger, and the thickness of outer rail and middle rail can reduce under the constant prerequisite of properties of product keeping; Number of spare parts is few and materials are thin makes its production cost lower; Its suitable being installed on all furniture is used.

Description of drawings

Fig. 1 is the cutaway view of certain guide rail of prior art;

Fig. 2 is the cutaway view that the embodiment of the invention 1 does not contain roller and ball;

Fig. 3 is the cutaway view of embodiment 1;

Fig. 4 is the cutaway view that embodiment 2 does not contain roller and ball.

The specific embodiment

Further specify the present invention below in conjunction with drawings and Examples.

Referring to Fig. 1, as a representative structure of existing guide rail product, its outer rail 1 and middle rail 2 cross sections are all rectangular, and the cross section of interior rail 3 is T-shaped; There is a pad rail 14 to be welded on above the middle rail 2.The end top is shaped on arc ditch 13 about pad rail 14, and the end below is shaped on flat face about pad rail 14; In 4 interior angles of rail 2 arc ditch 13 is arranged, corresponding with it, the both sides waist in interior rail 3 " T " cross section and two shoulders also are shaped on arc ditch 13, common assembly has four balls 4 between 4 interior angles of middle rail 2 and the interior rail 3; There is arc ditch 13 interior angle of outer rail 1 and two inboards, corresponding with it, also there is arc ditch 13 in two outsides of middle rail, be total to assembly between outer rail 1 inwall and the pad rail 14 two balls 4 are arranged, two

change gears

5 and 4, two change gears 5 of two balls are installed between outer rail 1 inwall and the pad rail 14 altogether to be contacted simultaneously with the inboard on the base of outer rail 1 and the flat face of pad rail 14.

The structure of Fig. 1 has disposed eight balls and two change gears altogether, above the middle rail also attaching a pad rail, obvious structure more complicated; And when outer rail was subjected to vertical weight, two balls can outwards open their attempts to last rail left and right sides upstanding edge generation lateral thrust about the top, for preventing this from occurring, have adopted thicker steel plate to make guide rail.

Referring to Fig. 2 and Fig. 3, embodiments of the invention 1 have outer rail 1, middle rail 2 and interior rail 3; The cross section of outer rail 1 and middle rail 2 roughly is ∏ shape, they all have respectively horizontal sides and about two upstanding edges; The same inverted isosceles triangle of the cross section shape of interior rail 3 and extend out by the summit of isosceles triangle

Shape installation portion, isosceles triangle partly comprise horizontal sides and about two hypotenuses; The first retainer (not shown) is arranged between outer rail 1 and the middle rail 2, the second retainer (not shown) is arranged between middle rail 2 and the interior rail 3.

Axial first a horizontally disposed roller 6 is arranged between the horizontal sides of the horizontal sides of outer rail 1 and middle rail 2, axial second a horizontally disposed roller 7 is arranged between the horizontal sides of the horizontal sides of middle rail and interior rail 3; The end of 1 liang of upstanding edge of outer rail all respectively has one first bending part 8; Two upstanding edges of middle rail 2 all respectively have one second bending part 9 and one the 3rd bending part 10, second bending part 9 is arranged in the top of rail 2 upstanding edges and relative with first bending part 8 of outer rail 1, and the 3rd bending part 10 is positioned at the below of second bending part 9 and relative with the hypotenuse of rail 3; Assembly has first ball 11 between first bending part 8 and second bending part 9, and assembly has second ball 12 between the hypotenuse 15 of the 3rd bending part 10 and interior rail 3; First roller 6 and two first balls 11 are all retrained by first retainer, and second roller 7 and two second balls 12 are all retrained by second retainer.

In order to improve the contact between ball and each bending part, the hypotenuse of all first bending parts 8, second bending part 9, the 3rd bending part 10 and interior rail 3 can suppress arc ditch 13, the curvature of arc ditch 13 is suitable with the diameter of first ball 11 or second ball 12, helps lowering the pressure of contact position.

Referring to Fig. 4, embodiment 2 is that with the difference of embodiment 1 its first bending part 8 is two-fold bendings, makes this place that better mechanical strength be arranged, and also is shaped on arc ditch 13 on first bending part 8 simultaneously.

Guide rail structure compared with prior art, two embodiment of the present invention by outer, in, horizontal sides and two rollers of interior rail transmit pressure at right angles, utilize four balls keep outer, in, the horizontal connection between the interior rail, such structure makes that bad deformation was minimum when guide rail bore weight, the weight capacity of guide rail is stronger, and the thickness of outer rail and middle rail can reduce under the constant prerequisite of properties of product keeping; Number of spare parts is few and materials are thin makes its production cost lower.

Claims

1. drawer guideway structure, comprise outer rail (1), middle rail (2) and interior rail (3), the cross section of outer rail (1) and middle rail (2) roughly is ∏ shape, interior rail (3) has the del cross section, between outer rail (1) and the middle rail (2) first retainer is arranged, between middle rail (2) and the interior rail (3) second retainer is arranged; It is characterized in that: axially horizontally disposed first roller (6) is arranged between the horizontal sides of the horizontal sides of outer rail (1) and middle rail (2), axially horizontally disposed second roller (7) is arranged between the horizontal sides of the horizontal sides of middle rail (2) and interior rail (3); The end of outer rail (1) two upstanding edge all has first bending part (8); Two upstanding edges of middle rail (2) all have second bending part (9) and three bending parts (10), second bending part (9) is arranged in the top of rail (2) upstanding edge and relative with first bending part (8) of described outer rail (1), and the 3rd bending part (10) is positioned at the below of second bending part (9) and relative with the hypotenuse of described rail (3); Assembly has first ball (11) between first bending part (8) and second bending part (9), and assembly has second ball (12) between the hypotenuse of the 3rd bending part (10) and interior rail (3); First roller (6) and first ball (11) are all retrained by described first retainer, and second roller (7) and second ball (12) are all retrained by described second retainer.

2. according to the described drawer guideway structure of claim 1, it is characterized in that: one or more among the hypotenuse of described first bending part (8), second bending part (9), the 3rd bending part (10) and interior rail (3) have arc ditch (13).

3. according to the described drawer guideway structure of claim 1, it is characterized in that: described first bending part (8) is two-fold bending.