CN112167860A

CN112167860A - Long stroke synchronous rail

Info

Publication number: CN112167860A
Application number: CN202011074003.1A
Authority: CN
Inventors: 邹莲; 许兴隆; 戴凯; 季强; 豆志河
Original assignee: Wuxi Haidaer Precision Slides Co ltd
Current assignee: Wuxi Haidaer Precision Slides Co ltd
Priority date: 2020-10-10
Filing date: 2020-10-10
Publication date: 2021-01-05

Abstract

The invention provides a long-stroke synchronizing rail, which can maximize the moving distance of the movable rail, so that the drawer can be completely pulled out, which is convenient for disassembly and maintenance, and convenient for taking and placing items; it includes two sets of slide rail assemblies arranged oppositely, each Each group of slide rail assemblies includes a fixed rail, a movable rail, and a middle rail bridging the fixed rail and the movable rail. A rack housing is sleeved on the outer side of the fixed rail, and the rack of the rack housing is engaged with a gear. The gears in the two sets of slide rail assemblies They are connected by a synchronizing rod, the gear is installed on the middle rail, the middle rail is installed with a traction transmission mechanism, and the movable rail is connected with the traction transmission mechanism. action.

Description

Long-stroke synchronous rail

Technical Field

The invention relates to the technical field of sliding rails, in particular to a long-stroke synchronous rail.

Background

The sliding rail is a common hardware connecting component in drawers of furniture, household appliances, cabinets and the like, drawers with different sizes can be smoothly pushed and pulled through the sliding rails arranged on two sides of the drawers or at the bottom of the drawers to pick and place articles, in order to improve the synchronism of the sliding rails on two sides and the pushing and pulling smoothness of the drawers, the existing sliding rail generally adopts a rack gear and synchronous rod structure, for example, a synchronous drawer sliding rail system with a silencing and rebounding function disclosed as CN106037297B, a synchronous sliding rail integrated with a damping closing and locking mechanism disclosed as CN110916390A and a hidden synchronous sliding rail capable of realizing quick assembly disclosed as CN210114208U, racks of the hidden synchronous sliding rail system are respectively and fixedly arranged through a shell component, an external fixed seat or a guide rail bracket, gears meshed with the racks are arranged on a movable rail in a sliding rail component, and then two gears on two sides of the drawers are connected through the synchronous rod, realize the synchronous motion of slide rail and the steady push-and-pull of drawer, because the gear is installed on the movable rail, be subject to the length of rack, the tip that the gear of meshing removed the rack can't advance again promptly, leads to the pull-out distance of movable rail limited, even three section rails also can't pull out the drawer is whole, both influenced getting of article and put, also be convenient for drawer dismouting and maintenance.

Disclosure of Invention

Aiming at the defects that the stroke of the existing synchronous rail is limited and the taking, the dismounting and the maintenance of articles are affected are inconvenient, the invention provides the long-stroke synchronous rail which can maximize the moving distance of the movable rail, so that the drawer is completely pulled out, and the synchronous rail is convenient to dismount, mount and maintain and take articles.

The invention adopts the following technical scheme: it includes two sets of slide rail set spares of mutual disposition, every group slide rail set spare all includes fixed rail, movable rail and bridging the fixed rail with the well rail of movable rail, the fixed rail outside cover is equipped with the rack shell, the rack toothing of rack shell has the gear, and is two sets of among the slide rail set spare connect its characterized in that through the synchronizing bar between the gear: the gear is arranged on the middle rail, the middle rail is provided with a traction transmission mechanism, the movable rail is connected with the traction transmission mechanism, and the movable rail and the middle rail can perform synchronous and equidirectional push-pull translation motion under the traction action of the traction transmission mechanism.

It is further characterized in that:

the gear is arranged at the rear end of the middle rail through a base;

the base comprises a circular block, supporting blocks are uniformly arranged along the circumferential direction of the circular block, two opposite supporting blocks are mounting feet, and a first step hole is formed in the center of the circular block;

the traction transmission mechanism comprises an annular transmission belt, synchronous wheels are respectively arranged at the front end and the rear end close to the middle rail and on the middle rail, and the annular transmission belt is wound on the periphery of the synchronous wheels;

a second step hole is formed in the center of the synchronous wheel, and the synchronous wheel comprises a top plate, a bottom plate and a rotating wheel which is positioned between the top plate and the bottom plate and matched with the annular transmission belt;

the synchronizing wheel positioned at the rear end of the middle rail is embedded in the base;

the second stepped hole of the synchronizing wheel positioned at the rear end of the middle rail is a two-stage stepped hole, and the stepped surface is opposite to the stepped surface of the first stepped hole of the base;

the movable rail is connected with the annular transmission belt through a connecting block;

every group the slide rail set spare still is equipped with slide rail resilience mechanism respectively, slide rail resilience mechanism includes resilience main part, slider, dials the piece, damping device and spring, the resilience main part is adorned admittedly in the recess of rack housing bottom, dial the piece install in the movable rail, the rear end of damping device and spring all adorn admittedly in on the resilience main part and damping device with spring parallel arrangement, damping device's damping rod front end, the front end of spring respectively with the slider is connected, the slider install in on the guide structure of resilience main part and can follow the guide structure removes, dial the piece can with thereby the slider forms the cooperation and drives the slider is followed the guide structure removes.

After the structure is adopted, the middle rail is provided with the traction transmission mechanism, the gear meshed with the rack is arranged on the middle rail, the movable rail is connected with the traction transmission mechanism, when the drawer is pushed and pulled, the traction transmission mechanism is similar to a movable pulley block, the movable rail and the middle rail can be synchronously pushed, pulled and translated in the same direction, therefore, when the drawer is pulled, the moving distance of the movable rail can reach twice of the moving distance of the gear, and because the gear is fixedly arranged on the middle rail, when the middle rail is pulled out relative to the fixed rail, the bridging effect of the middle rail is maximized, the movable rail can realize the maximum moving distance of the movable rail which is completely pulled out, so that the drawer is completely pulled out and integrally positioned outside the cabinet body, the article taking and the article taking are convenient, and the assembly, the disassembly and the maintenance of the drawer and the slide rail are.

Drawings

Fig. 1 is a schematic structural diagram of a closed state of a long-stroke synchronous rail according to the present invention.

Fig. 2 is a schematic structural diagram of a stretched state according to a first embodiment of the present invention.

Fig. 3 is an exploded view of the first embodiment of the present invention.

Fig. 4 is a schematic structural diagram of one set of slide rail assemblies with the movable rail and the toggle block removed according to the first embodiment of the present invention.

Fig. 5 is a schematic structural diagram of one set of slide rail assemblies with the movable rail and the toggle block removed according to the second embodiment of the present invention.

FIG. 6 is a schematic view of the front and back side structures of the base of the present invention.

Fig. 7 is an exploded structural schematic view of the slide rail rebounding mechanism of the present invention.

FIG. 8 is a schematic view of the front and back side structures of the gear of the present invention.

Fig. 9 is a schematic front and back side view of a synchronizing wheel at the rear end of a middle rail according to a first embodiment of the present invention.

Fig. 10 is a schematic front and back side view of a synchronizing wheel at the front end of a middle rail according to a first embodiment of the present invention.

Fig. 11 is a schematic front and back side view of a connecting block according to a first embodiment of the present invention.

Fig. 12 is a schematic front and back side view of a synchronizing wheel at the rear end of a middle rail according to a second embodiment of the present invention.

Fig. 13 is a schematic front and back side view of a connecting block according to a second embodiment of the present invention.

Detailed Description

The invention is further described with reference to the accompanying drawings in which:

as shown in fig. 1 to 13, the present invention provides a long-stroke synchronous rail, which comprises two sets of sliding rail assemblies 1 (2) arranged oppositely, each set of sliding rail assembly comprises a fixed rail 102 (202), a movable rail 105 (205), and a middle rail 103 (203) bridging the fixed rail and the movable rail, a rack housing 101 (201) is sleeved outside the fixed rail, a rack 118 (218) of the rack housing is engaged with a gear 106 (206), the

gears

106 and 206 in the two sets of sliding rail assemblies are connected by a synchronous rod 3, the gear 106 (206) is mounted on the middle rail 103 (203), as shown in fig. 3 to 6, the gear 106 (206) is mounted on the rear end of the middle rail 103 (203) by a base 107 (207); the base 107 (207) comprises a circular block 4, wherein supporting blocks 5 are uniformly arranged along the circumferential direction of the circular block 4, two opposite supporting blocks 5 are mounting feet 6, and the center of the circular block 4 is provided with a first stepped hole 7; the middle rail 103 (203) is provided with a traction transmission mechanism, the movable rail 105 (205) is connected with the traction transmission mechanism, when the drawer is pushed and pulled, the traction transmission mechanism is similar to a movable pulley block, and the movable rail and the middle rail can synchronously and synchronously push, pull and translate, so that when the drawer is pulled, the moving distance of the movable rail can reach twice of the moving distance of the gear, and because the gear is fixedly arranged on the middle rail, when the middle rail is pulled out relative to the fixed rail, the bridging effect of the middle rail is maximized, the movable rail can realize the maximum moving distance of complete pulling, and the drawer is completely pulled out and integrally positioned outside the cabinet body, thereby facilitating the taking and placing of articles, and being convenient for the disassembly, assembly and maintenance of the drawer and the slide rail assembly.

The first embodiment:

as shown in fig. 3 to 4, 6 and 9 to 11, the traction transmission mechanism includes an annular transmission belt, the annular transmission belt is a synchronous belt 109 (209) with a toothed inner surface, the front end and the rear end of the middle rail 103 (203) and the middle rail 103 (203) are respectively provided with a synchronous wheel 110 (210) and a synchronous wheel 108 (208), and the annular transmission belt is wound on the outer periphery of the synchronous wheels 110 (210) and 108 (208); the center of the synchronous wheel is provided with second stepped

holes

13 and 25, the synchronous wheel comprises a top plate 12, a bottom plate 14 and a rotating wheel which is positioned between the top plate 12 and the bottom plate 14 and is matched with a synchronous belt, as shown in fig. 9 and fig. 10, the rotating wheel is a toothed wheel 15, and meshing transmission is formed between the toothed wheel 15 and the synchronous belt 109 (209) with the toothed inner surface; a synchronizing wheel 108 (208) positioned at the rear end of the middle rail is embedded in a base 107 (207); the second stepped hole 13 of the timing pulley 108 (208) located at the rear end of the center rail is a two-step stepped hole, and the stepped surface 16 faces the stepped surface 8 of the first stepped hole 7 of the base 107 (207).

As shown in fig. 4 and 11, the movable rail 105 (205) is connected with the timing belt 109 (209) through a connecting block; the connecting block is a snap-on connecting block 112 (212), the snap-on connecting block 112 (212) is respectively provided with a tooth block 18 meshed with the synchronous belt 109 (209) and a mounting hole 17 matched with the movable rail 105 (205), a pressing plate 19 is arranged above the tooth block 18 and the snap-on connecting block 112 (212), an arch-shaped groove 20 is formed at one end part of the mounting hole 17 and the snap-on connecting block 112 (212), the snap-on connecting block is detachably mounted by meshing the tooth block and the synchronous belt, and the mounting position of the movable rail is convenient to mount, dismount, maintain and replace; the arch-shaped groove is convenient for fixing and installing the movable rail by adopting rivets, thereby not only improving the stability of the slide rail, but also avoiding the friction between the rivet bulge and the middle rail and prolonging the service life of the slide rail.

The second embodiment:

as shown in fig. 5, 12 and 13, the traction drive mechanism includes an endless drive belt, which is a flexible belt 109 '(not shown) (209') provided with synchronizing wheels 110 '(not shown) (210') and 108 '(208') respectively installed near the front and rear ends of the middle rail 103 (203) and the middle rail 103 (203), and is wound around the outer peripheries of the synchronizing wheels 110 '(210'), 108 '(208'); a second step hole 13 is formed in the center of the synchronous wheel, the synchronous wheel comprises a top plate 12, a bottom plate 14 and a rotating wheel which is positioned between the top plate 12 and the bottom plate 14 and matched with the synchronous belt, as shown in fig. 12, the rotating wheel is a V-shaped grooved wheel 22, and the V-shaped grooved wheel 22 and a flexible belt 109 '(not shown) (209') form friction transmission; a synchronizing wheel 108 '(208') positioned at the rear end of the middle rail is embedded in the base 107 (207); the second stepped hole 13 of the timing wheel 108 '(208') located at the rear end of the center rail is a two-step stepped hole, and the stepped surface 16 faces the stepped surface 8 of the first stepped hole 7 of the base 107 (207).

As shown in fig. 5 and 13, the movable rail 105 (205) is connected with the timing belt 109 (209) through a connecting block; the connecting block is a serial connecting block 112 '(212'), the serial connecting block 112 '(212') is respectively provided with a serial block 23 connected with a flexible belt 109 '(not shown) (209'), a mounting hole 17 matched with the movable rail 105 (205) for mounting, the serial block 23 is provided with a through hole 24, a pressing plate 19 is arranged above the serial block 23 and on the serial connecting block 112 '(212'), one end part of the mounting hole 17 and the serial connecting block 112 '(212') are provided with an arch-shaped groove 20, and the serial connecting block 112 '(212') is connected with the flexible belt through the through hole 24 on the serial block 23, so that the smoothness of pushing and pulling can be improved.

In the first and second embodiments, each set of sliding rail assemblies 1 (2) is further provided with a sliding rail rebounding mechanism, as shown in fig. 1 to 5 and 7, each sliding rail rebounding mechanism includes a rebounding main body 114 (214), a sliding block 117 (217), a shifting block 113 (213), a damping device 116 (216), and a spring 115 (215), the rebounding main body 114 (214) is fixedly installed in the groove 21 at the bottom of the rack housing 101 (201), the shifting block 113 (213) is installed on the movable rail 105 (205), the damping device 116 (216), and the rear end of the spring 115 (215) are fixedly installed on the rebounding main body 114 (214), the damping device 116 (216) and the spring 115 (215) are arranged in parallel, the front end of the damping rod of the damping device and the front end of the spring are respectively connected with the sliding block 117 (217), the sliding block 117 (217) is installed on the guiding structure of the rebounding main body 114 (214) and can move along the guiding structure, and the shifting block 113 (213) can cooperate with the sliding block (117) to drive the sliding block (217) to move along the guiding structure The slide rail rebounding mechanism can buffer the push-pull speed of the slide rail, prevent the drawer from excessively colliding with the cabinet body, and improve the service life of the drawer and the silencing effect of the slide rail; the detailed structure and installation manner of the slide rail rebounding mechanism can be referred to in patent CN106037297B "synchronous drawer slide rail system with noise reduction rebounding function".

The first embodiment is taken as an example to illustrate the working principle as follows: as shown in fig. 1 to 4 and fig. 6 to 11, two sets of slide rail assemblies, namely, a left slide rail assembly 1 and a right slide rail assembly 2, are oppositely arranged, the left slide rail assembly 1 includes a fixed rail 102, a movable rail 105 and a middle rail 103, a rack housing 101 is sleeved outside the fixed rail 102, and a gear 106 is engaged with a rack 118 of the rack housing 101; the middle rail 103 is provided with a traction transmission mechanism, the traction transmission mechanism comprises an annular transmission belt, the annular transmission belt is a synchronous belt 109,

synchronous wheels

110 and 108 are respectively arranged at the front end and the rear end close to the middle rail 103 and the middle rail 103, and the synchronous belt 109 is wound on the peripheries of the

synchronous wheels

110 and 108; the synchronizing wheel 108 positioned at the rear end of the middle rail is embedded in the stepped surface 8 of the first stepped hole 7 of the base 107 through the top plate 12, the stepped surface 8 of the first stepped hole 7 of the base 107 is opposite to the stepped surface 16 of the two-stage stepped hole 13 of the synchronizing wheel 108, so that an installation cavity is formed, the central shaft 11 of the gear 106 passes through the first stepped hole 7 of the base 107 and is inserted in the first-stage stepped surface of the two-stage stepped hole 13 of the synchronizing wheel 108, then the central shaft is installed on the middle rail 103 through the installation foot 6 and the gear 106 of the base 107, and the gear 106 and the synchronizing wheel 108 are concentrically connected, so that the mounting and dismounting are convenient, the coaxial rotation effect can be achieved, and the synchronism is further; the traction transmission mechanism is fixedly arranged on the middle rail 103 through a second-stage step section of the two-stage step hole 13 of the synchronizing wheel 108 and a second step hole 25 of the synchronizing wheel 110, and the stability and the transmission effect of the traction transmission mechanism can be enhanced by the synchronizing wheel 108, the top plate 12 and the bottom plate 14 of the synchronizing wheel 110 and a rotating wheel structure which is positioned between the top plate 12 and the bottom plate 14 and matched with a synchronous belt, so that the sliding smoothness of the sliding rail in pushing and pulling is further ensured; the movable rail 105 is fixedly connected with a clamping type connecting block 112 through a rivet and a mounting hole 17, and the clamping type connecting block 112 is clamped on the synchronous belt 109 through a tooth block 18 and a pressing plate 19; a toggle block 113 of the slide rail rebounding mechanism is arranged on the movable rail 105, and a slide block 117, a damping device 116 and a spring 115 of the slide rail rebounding mechanism are arranged in a groove 21 of the rack shell 101 through a rebounding main body 114; a ball retainer 104 is arranged between the movable rail 105 and the middle rail 103 to increase the push-pull smoothness; the buffer block 111 is clamped at the end part of the movable rail 105, so that the attractiveness and the safety can be improved.

The right slide rail component 2 comprises a fixed rail 202, a movable rail 205 and a middle rail 203, a rack shell 201 is sleeved outside the fixed rail 202, a gear 206 is meshed with a rack 218 of the rack shell 201, a traction transmission mechanism is installed on the middle rail 203, the traction transmission mechanism comprises an annular transmission belt, the annular transmission belt is a synchronous belt 209,

synchronous wheels

210 and 208 are respectively installed at the front end and the rear end close to the middle rail 203 and on the middle rail 203, and the synchronous belt 109 is wound on the peripheries of the

synchronous wheels

210 and 208; the synchronizing wheel 208 positioned at the rear end of the middle rail is embedded in the step surface 8 of the first step hole 7 of the base 207 through the top plate 12, the step surface 8 of the first step hole 7 of the base 207 is opposite to the step surface 16 of the two-step hole 13 of the synchronizing wheel 208, so that an installation cavity is formed, the central shaft 11 of the gear 106 passes through the first step hole 7 of the base 107 and is inserted in the first step surface of the two-step hole 13 of the synchronizing wheel 208, and then is installed on the middle rail 203 through the installation foot 6 and the gear 206 of the base 207, and the gear 206 and the synchronizing wheel 208 are concentrically connected; the traction transmission mechanism is fixedly arranged on the middle rail 203 through the second step section of the two-stage step hole 13 of the synchronizing wheel 208 and the second step hole 25 of the synchronizing wheel 210; the movable rail 205 is fixedly connected with a clamping type connecting block 212 through a rivet and a mounting hole 17, and the clamping type connecting block 212 is clamped on the synchronous belt 209 through a tooth block 18 and a pressing plate 19; a toggle block 213 of the slide rail rebound mechanism is arranged on the movable rail 205, and a slide block 217, a damping device 216 and a spring 215 of the slide rail rebound mechanism are arranged in a groove 21 of the rack shell 201 through a rebound main body 214; a ball retainer 2042 is arranged between the movable rail 205 and the middle rail 203; the end of the movable rail 205 is clamped with a buffer block 211.

As shown in fig. 3 to 5 and 8, the

gears

106 and 206 are respectively clamped at two ends of the synchronization rod 3 through the square shaft sleeve 10 and the T-shaped clamping plate 9, so as to connect the left slide rail assembly 1 and the right slide rail assembly 2 through the synchronization rod 3; the connection mode of the gear and the synchronous rod can also be referred to in CN106037297B "synchronous drawer slide rail system with noise reduction and resilience function".

The left sliding rail assembly 1 and the right sliding rail assembly 2 are respectively arranged at two sides of the drawer through

movable rails

105 and 205, and are arranged in the cabinet body through

rack housings

101 and 201, when the drawer is pushed and pulled, an annular transmission belt and a synchronizing wheel in the traction transmission mechanism are similar to a movable pulley block, so that the movable rails and the middle rails can perform synchronous and equidirectional push-pull translation movement, namely the movable rails and the middle rails synchronously perform linear movement along the closing or stretching direction of the sliding rails, and meanwhile, the traction transmission mechanism pulls a gear fixedly arranged on the middle rails to perform equidirectional linear movement along the racks through the middle rails; therefore when the drawer is pulled open, it is spacing through the connecting block on the hold-in range, during gear stop motion, the displacement of movable rail reaches the twice of gear displacement, and because gear fixed mounting is on well rail, when so well rail is pulled out for fixed rail, the bridging effect maximize of well rail, the movable rail realizes the biggest displacement who pulls out completely to pull out the drawer completely, wholly be located outside the cabinet body.

Particularly, in the two embodiments, the synchronizing wheel positioned at the rear end of the middle rail is embedded in the base for mounting the gear, so that the synchronizing wheel and the gear form concentric connection, and the synchronism of the gear pulled by the traction transmission mechanism to translate in the same direction is better.

Claims

1. long-stroke synchronous rail, it comprises two sets of slide rail assemblies arranged oppositely, each group of described slide rail assemblies comprises fixed rail, movable rail, and the middle rail bridging described fixed rail and described movable rail, described A rack housing is sleeved on the outer side of the fixed rail, the rack of the rack housing is meshed with a gear, and the gears in the two sets of the slide rail assemblies are connected by a synchronizing rod. It is characterized in that: the gears are installed on the The middle rail is installed with a traction transmission mechanism, the movable rail is connected with the traction transmission mechanism, and the movable rail and the middle rail can be synchronized and in the same direction under the traction action of the traction transmission mechanism. push-pull panning action.

2 . The long-stroke synchronous rail according to claim 1 , wherein the gear is mounted on the rear end of the middle rail through a base. 3 .

3. The long-stroke synchronous rail according to claim 2, wherein the base comprises a circular block, and supporting blocks are evenly arranged along the circumference of the circular block, wherein two opposite supporting blocks For mounting feet, a first stepped hole is opened in the center of the circular block.

4 . The long-stroke synchronous rail according to claim 3 , wherein the traction transmission mechanism comprises an endless transmission belt, and a synchronous wheel is installed near the front and rear ends of the middle rail and the middle rail, and the An endless transmission belt is wound around the outer circumference of the synchronous wheel.

5 . The long-stroke synchronous rail according to claim 4 , wherein a second stepped hole is formed in the center of the synchronous wheel, and the synchronous wheel comprises a top plate, a bottom plate, and is located between the top plate and the bottom plate. 6 . and a runner that cooperates with the endless transmission belt.

6 . The long-stroke synchronizing rail according to claim 5 , wherein the synchronizing wheel located at the rear end of the middle rail is embedded in the base. 7 .

7 . The long-stroke synchronizing rail according to claim 5 , wherein the second stepped hole of the synchronizing wheel at the rear end of the middle rail is a two-stage stepped hole, and the stepped surface and the first step of the base are 7 . The stepped faces of the stepped holes are opposite.

8 . The long-stroke synchronous rail according to claim 4 , wherein the movable rail is connected with the endless transmission belt through a connecting block. 9 .

9 . The long-stroke synchronous rail according to claim 1 , wherein each group of the slide rail assemblies is further provided with a slide rail rebound mechanism, and the slide rail rebound mechanism comprises a rebound main body, a slider, a A toggle block, a damping device and a spring, the resilient body is fixed in the groove at the bottom of the rack housing, the toggle block is mounted on the movable rail, the damping device, and the rear end of the spring are fixedly mounted on the rebound body and the damping device is arranged in parallel with the spring, the front end of the damping rod of the damping device and the front end of the spring are respectively connected with the slider, the The resilient main body can move along the guide structure, and the toggle block can cooperate with the slider to drive the slider to move along the guide structure.