CN2484832Y

CN2484832Y - Ball style drawer railing

Info

Publication number: CN2484832Y
Application number: CN01242280U
Authority: CN
Inventors: 陈少明
Original assignee: MINGGUANG HARDWARE FITTINGS FACTORY JIUJIANG TOWN NANHAI CITY
Current assignee: MINGGUANG HARDWARE FITTINGS FACTORY JIUJIANG TOWN NANHAI CITY
Priority date: 2001-06-21
Filing date: 2001-06-21
Publication date: 2002-04-10
Anticipated expiration: 2011-06-21

Abstract

The utility model provides a ball-bearing type drawer guide rail and is characterized in that an inner guide rail provided symmetrically with four ball-bearing troughs is arranged along the vertical direction at the top of the other side of a bracket, and the other side of the groove type bracket has a plurality of mounting holes. An outer guide rail is covered on the inner guide rail, a ball-bearing positioning sleeve which both ends are equipped with two ball-bearing positioning holes is arranged between the two guide rails, and the balls bearing are placed inside the ball-bearing positioning holes and contact the inner and outer guide rails. The drawer guide rail has advantages, such as easy glide, good wear resistance, and low operating noise and large supporting capacity, and is in particular used in advanced office buildings.

Description

The ball-type drawer guideway

The utility model relates to furniture part, and particularly a kind of ball-type drawer guideway is fit to desk and adopts.

In prior art, the pulling out and advancing of drawer for convenience all installed guide rail and guide wheel on the lower end, both sides of drawer and corresponding next door.This guide frame is fairly simple, and manufacturing cost is also lower, has obtained general application.Yet the weak point of the guide rail of this structure is that noise is bigger, wearing and tearing easily, and also bearing value is also poor.

The ball-type drawer guideway that the purpose of this utility model is to provide a kind of and slides freely, wearability is good, noise is few and bearing value is high.

Above-mentioned task realizes by this way: this drawer guideway is by support, interior guide rail, ball, ball positioning sleeve and outer guide constitute, support is a grooved, have several installing holes in the one side, the interior guide rail that symmetry has four ball grooves longitudinally is arranged at the top of support another side, outer guide is placed in outside the interior guide rail, the ball positioning sleeve is arranged between interior guide rail and the outer guide, its two ends respectively are provided with two groups of ball locating holes, ball is positioned in the ball locating hole, and contact with the ball grooves of outer guide inwall and interior guide rail respectively, the rear end of the two ends of interior guide rail and outer guide be respectively equipped with anti-drop block and spacing in plush copper.

During use, with about the support of two drawer guideways be installed in respectively on the dividing plate of drawer both sides, again two outer guides are installed in the two ends, the left and right sides of drawer bottom surface, drawer just can free in and out.

The further improvement project of the utility model is also to be provided with a drawer in the bottom surface of grooved support to help return device.This device is made of base plate, shifting block, extension spring and top board, first half has a vertical indent guide groove on base plate, the front end of this guide groove has the knuckle section at one section 90 ° of angle, shifting block has a U type breach that extends the support outside, be provided with two plush coppers that cooperate with guide groove in its bottom surface, be provided with a finger that cooperates with U type breach on outer guide, extension spring is arranged between shifting block and the base plate rear end.It is work like this that this drawer helps return device: when drawer is closed, the finger of outer guide is just in time blocked by U type breach, when drawer was pulled out, finger just drove shifting block by U type breach and moves forward along guide groove, when the last plush copper of finger bottom surface arrives at the guide groove front end, under the eccentric force effect, change knuckle section guide groove over to, when arriving the bottom, shifting block has just rotated certain angle, and U type breach is turned forward, finger is not produced constraint, and drawer can continue to pull out.And, shifting block can't be retracted original position at this moment because the direction of pull of extension spring has gone to certain angle.Drawer when its finger touches U type breach, just promotes U type breach when pushing back backward, makes the shifting block revolution, and its previous plush copper just withdraws from from guide groove knuckle section and gets back to longitudinally in the guide groove.At this moment, under the extension spring pulling force, drive finger and move, very fast drawer is drawn in the desk, keep drawer panel smooth toward interior.

The utility model also can be done following further improvement: for convenience guide rail is installed on the drawer, be convenient to again whole drawer is pulled out cleaning, can adopt the snapping mode that this guide rail is contained on the drawer, its scheme is as follows: direction perpendicular type hook forward is set on the end face of outer guide rear end, on the drawer rear wall of correspondence, have a blind hole that cooperates with hook, establish a wedge shape plush copper in the side of outer guide front end, and auxilliaryly in the drawer bottom surface at corresponding plush copper place establish one and use plastic elastomeric grip, allow it that this plush copper is fastened, drawer and outer guide tightly are buckled together.When needs pulled out cleaning with whole drawer, available two hands extended the drawer below and pull elastomeric grip, and the plush copper that makes its front end break away from outer guide just can.When reinstalling drawer, drawer is pushed into the bottom along two outer guides, the hook of outer guide is inserted in the blind hole of drawer again, and fastening the plush copper of outer guide again, its elastomeric grip just can.

From above-mentioned improvement as can be known, the utility model is compared with rolling wheel guide rails, has following advantage:

1, the drawer turnover is smooth, and noise is few.

2, ball is very wear-resisting, improves the service life of guide rail effectively.

3, support by four groups of balls, significantly improve the bearing capacity of guide rail.

4, install and remove and use very convenient.

Below in conjunction with accompanying drawing structure of the present utility model is further described.

Fig. 1 is office's cutaway view of the utility model one embodiment concrete structure.

Fig. 2 is the partial sectional view of overlooking of Fig. 1.

Fig. 3 is along the cutaway view Amplified image of A-A line among Fig. 1.

Fig. 4 is big for putting figure along analysing and observe of B-B line among Fig. 1.

Fig. 5 is along the partial sectional view of C-C line among Fig. 4.

Fig. 6 is installed in upward view behind the drawer bottom surface for the utility model.

Shown in Fig. 1～figure, support 1 usefulness steel plate rolling forms the grooved of font, respectively has several installing holes 2 in the front and rear part of one side, and longitudinally shuts out a disjunctor on the top of its opposite side and the interior guide rail 4 of four symmetrical ball grooves 3 is arranged.Outer guide 5 usefulness steel plate rollings form, and the side of end face in its back-end and rear end stamps out hook 6 and wedge shape plush copper 7 respectively.Plastic injection-moulded the forming of ball positioning sleeve 8 usefulness respectively is provided with two groups of ball locating holes 9 at its two ends.On the guide rail 4, put into ball 10 in earlier ball positioning sleeve 8 being placed in during assembling, produce and anticreep plush copper 11 is set at the two ends of interior guide rail 4 at ball locating hole 9.And then with outer guide 5 cover thereon, at last outer guide 5 rear ends be provided with spacing in plush copper 12 just can.

The length of outer guide 5 can decide according to the length of drawer, gets final product with the length that is slightly smaller than drawer.The length of interior guide rail 4 (being support 1) is suitable with 60～70% of overcoat rail 5 length.The length of ball positioning sleeve 8 with 80～120 millimeters for well.

Shown in Fig. 4～5, the utility model drawer helps the base plate 14 of return device 13 made of plastic, and the knuckle section 16 of its vertical indent guide groove 15 and 90 ° all forms in injection moulding.Shifting block 17 and U type breach 18 thereof and two plush coppers 19 are all injection molded together.Shifting block 17 places with two plush copper 19 in vertical indent guide groove 15 of base plate 14 and links together with base plate 14, loads onto an extension spring 20 in the rear end and base plate 14 rear ends of shifting block 17.Top at extension spring 20 preferably also adds a grooved cover plate 21, comes off to prevent extension spring 20.For making things convenient for drawer to help return device 13 to be installed on the support 1, the elasticity button 22 of a disjunctor respectively is set at base plate 14 two ends, during installation two elasticity back-offs 22 are pressed in the installing hole of support 1 relevant position and just can.The finger 23 of outside the outer guide 5 of corresponding U type breach 18, burn-oning.

As shown in Figure 6, auxilliary elastomeric grip 24 usefulness of establishing of the utility model have certain flexible plastics to make.25 is drawer among the figure, and 26 is the desk dust panel.

Claims

1, a kind of ball-type drawer guideway, it is characterized in that by support (1), interior guide rail (4), ball (10), ball positioning sleeve (8) and outer guide (5) constitute, support (1) is a grooved, have several installing holes (2) in the one side, the interior guide rail (4) that symmetry has four ball grooves (3) longitudinally is arranged at the top of support (1) another side, outer guide (5) is placed in outside the interior guide rail (4), ball positioning sleeve (8) is provided with between interior guide rail (4) and the outer guide (5), its two ends respectively are provided with two groups of ball locating holes (9), ball (10) is positioned in the ball locating hole (9), and contact with the ball grooves (3) of outer guide (5) inwall and interior guide rail (4) respectively, the rear end of the two ends of interior guide rail (4) and outer guide (5) be respectively equipped with anti-drop block (11) and spacing in plush copper (12).

2, drawer guideway according to claim 1, it is characterized in that being provided with a drawer in the bottom surface of support (1) helps return device (13), this drawer helps return device (13) by base plate (14), shifting block (17) and extension spring (20) constitute, first half has a vertical indent guide groove (15) on base plate (14), the front end of this guide groove (15) has the knuckle section (16) at one section 90 ° of angle, shifting block (17) has a U type breach (18) that extends support (1) outside, be provided with two plush coppers (19) that cooperate with guide groove (15) in its bottom surface, be provided with a finger (23) that cooperates with U type breach (18) on outer guide (5), extension spring (20) is arranged between shifting block (17) and base plate (14) rear end.

3, drawer guideway according to claim 1 is characterized in that being provided with direction perpendicular type hook (6) forward on the end face of outer guide (5) rear end, a wedge shape plush copper (7) also is set on the side of front end.