CN210643261U

CN210643261U - Three-section linkage sliding rail device of drawer

Info

Publication number: CN210643261U
Application number: CN201921183427.4U
Authority: CN
Inventors: 詹玉亮
Original assignee: Foshan Shunde Audrey Metal Products Co ltd
Current assignee: Foshan Shunde Audrey Metal Products Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-06-02
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses a three section interlock slide rail device of drawer, including last rail, well rail, fixed rail, go up interlock rack and lower interlock rack, well rail is through interlock rack sliding connection down on fixed rail, it is on well rail through last interlock rack sliding connection to go up the rail, it is split type structure to go up interlock rack, lower interlock rack, it installs between well rail and last rail to go up interlock rack equipment back, install between fixed rail and well rail after the equipment of lower interlock rack. The utility model discloses in, to go up the interlock rack and set up to split type structure with lower interlock rack, can simplify the preparation process on making to reduce the cost of manufacture, the components of a whole that can function independently structure can assemble into integrated configuration fast moreover, and the components of a whole that can function independently structure can share in the slide rail of different length, has reduced the production and has assembled the degree of difficulty, makes this slide rail device's assembly simple, easy dismounting, slip effectual, can install fast or dismantle, improves production efficiency greatly.

Description

Three-section linkage sliding rail device of drawer

Technical Field

The utility model relates to a drawer technical field, in particular to three section interlock slide rail device of drawer.

Background

Drawer slide rail is the hardware fitting who is used on the furniture cabinet body, and current drawer slide rail generally has two sections slide rails and three section slide rail, and two sections slide rails are compared to the three section slide rail, and it is more nimble to slide, and the resistance is littleer when sliding. The existing three-section sliding rail generally comprises an upper rail, a middle rail, a fixed rail and other components, wherein the fixed rail is connected with a cabinet body of a drawer and is fixed on the cabinet body by screws. The upper rail is connected with a handle locked on the drawer. The drawer is opened and closed by the operation of the sliding rail during pushing and pulling. Because the spare part is more, consequently the equipment degree of difficulty is high, and the production degree of difficulty is high, greatly increased manufacturing cost, production efficiency is low moreover.

In the patent document with application number 201821064824.5, a three-section drawer slide rail assembly is disclosed, which comprises a movable rail, a middle rail and a fixed rail, wherein the movable rail is provided with a horizontal upper flat plate part I, two ends of the upper flat plate part I are downwards and vertically bent to form a left vertical part I and a right vertical part I, and the left vertical part I and the right vertical part I are inwards extended to form bending parts; the middle rail is provided with an upper flat plate part II parallel to the upper flat plate part I, one end of the upper flat plate part II is connected with a right vertical part II through an outer convex arc transition and an inner concave arc groove, the right vertical part II is vertically bent inwards to form a lower flat plate part II, the other end of the upper flat plate part II is connected with a left vertical part II through an outer convex arc transition and an inner concave arc groove, and the lower end of the left vertical part II is bent inwards in an arc shape; an upper retainer is arranged between the movable rail and the middle rail, and a lower retainer is arranged between the middle rail and the fixed rail.

But the assembly precision requirement of above-mentioned three section drawer slide rail set spares is higher, consequently the equipment degree of difficulty is high, leads to the manufacturing degree of difficulty to be high, greatly increased manufacturing cost, production efficiency is low moreover.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a three-section linkage slide rail device of a drawer, which is easy to assemble and can reduce the manufacturing cost.

Another object of the utility model is to provide a three section interlock slide rail device of drawer, the device assembly is simple, easy dismounting, slip are effectual, can install fast or dismantle, improve production efficiency greatly.

In order to achieve the above object, the technical solution of the present invention is as follows.

The utility model provides a three section interlock slide rail device of drawer, including last rail, well rail, fixed rail, go up interlock rack and lower interlock rack, well rail is through interlock rack sliding connection down on fixed rail, go up the rail through last interlock rack sliding connection on well rail, its characterized in that it is split type structure to go up interlock rack, lower interlock rack, it installs between well rail and last rail to go up the interlock rack equipment back, install between fixed rail and well rail down the interlock rack equipment back. The utility model discloses in, to go up the interlock rack and set up to split type structure with lower interlock rack, can simplify the preparation process on making to reduce the cost of manufacture, the components of a whole that can function independently structure can assemble into integrated configuration fast moreover, and the components of a whole that can function independently structure can share in the slide rail of different length, has reduced the production and has assembled the degree of difficulty, makes this slide rail device's assembly simple, easy dismounting, slip effectual, can install fast or dismantle, improves production efficiency greatly.

Furthermore, the upper linkage rack comprises a first upper wheel frame, a second upper wheel frame and an upper linkage rack main body, the first upper wheel frame and the second upper wheel frame are respectively detachably connected to the front end and the rear end of the upper linkage rack main body, upper wheels are respectively mounted on the upper portions of the first upper wheel frame and the second upper wheel frame, spherical wheels are respectively mounted on the left side and the right side of the first upper wheel frame and the second upper wheel frame, and the upper wheels and the spherical wheels are located between the upper rail and the middle rail. The utility model discloses in, go up the interlock rack including first upper wheel frame, second upper wheel frame and upper interlock rack main part, through the setting of the split type structure of upper interlock rack, can simplify the manufacturing procedure on manufacturing, thereby reduce the cost of manufacture, and the split type structure can be assembled into integrated configuration fast, first upper wheel frame, second upper wheel frame can share in the slide rail of different length, have reduced production and assembled the degree of difficulty, make the assembly of this slide rail device simple, easy dismounting, the slip is effectual, can install or dismantle fast, greatly improve production efficiency; the upper wheel and the spherical wheel are arranged between the upper rail and the middle rail, and can be used for mutual supporting, rolling and orienting functions of the middle rail and the upper rail in the running process of the sliding rail.

Furthermore, the front end and the rear end of the upper linkage rack main body are respectively provided with a clamping groove and a limiting block arranged at the opening of the clamping groove, one end of the first upper wheel carrier and one end of the second upper wheel carrier, which face the upper linkage rack main body, are respectively provided with a limiting bulge matched with the clamping groove, and when the first upper wheel carrier and the second upper wheel carrier are respectively connected to the front end and the rear end of the upper linkage rack main body, the limiting bulge of the first upper wheel carrier and the limiting bulge of the second upper wheel carrier respectively slide into the clamping grooves through the limiting blocks at the two ends of the upper linkage rack main body to be fixed. The utility model discloses in, can make things convenient for first last wheel carrier through the draw-in groove, stopper and spacing bellied setting, the wheel carrier is gone up to the second and the installation between the interlock rack main part, make first last wheel carrier and second go up the wheel carrier can assemble integrated configuration with last interlock rack main part fast, and wheel carrier can share in the slide rail of different length on first last wheel carrier and the second, the production and the equipment degree of difficulty have been reduced, make this slide rail device's assembly simple, easy dismounting, it is effectual to slide, can install fast or dismantle, the production efficiency is greatly improved.

Further, the lower linkage rack comprises a first lower wheel frame, a second lower wheel frame and an upper linkage rack main body, the first lower wheel frame and the second lower wheel frame are respectively detachably connected at two end positions of the left side portion of the lower linkage rack main body, large wheels are installed on the side portions, facing the lower linkage rack main body, of the first lower wheel frame and the second lower wheel frame, middle wheels are installed on the upper portions and the bottoms of the first lower wheel frame and the second lower wheel frame, small wheels are installed on the right side portion of the lower linkage rack main body and two end positions, opposite to the first lower wheel frame and the second lower wheel frame, of the right side portion of the lower linkage rack main body, and the large wheels, the middle wheels and the small wheels are located between the fixed rail and the middle rail. The utility model discloses in, upper and lower interlock rack is including first lower wheel carrier, second lower wheel carrier and upper interlock rack main part, through the setting of the split type structure of lower interlock rack, can simplify the preparation process on manufacturing, thereby reduce the cost of manufacture, and the split type structure can assemble into integrated configuration fast, first lower wheel carrier, second lower wheel carrier can share in the slide rail of different length, have reduced production and assembled the degree of difficulty, make the assembly of this slide rail device simple, easy dismounting, the slip is effectual, can install or dismantle fast, greatly improve production efficiency; the large wheel, the middle wheel and the small wheel are positioned between the fixed rail and the middle rail, and can be used for mutual supporting, rolling and orienting actions of the middle rail and the fixed rail in the running process of the sliding rail.

Further, the two end positions of the left side portion of the lower linkage rack main body are both provided with fixing protrusions, the first lower wheel frame and the second lower wheel frame are provided with fixing grooves matched with the fixing protrusions towards the side portion of the upper linkage rack main body, and when the first lower wheel frame and the second lower wheel frame are respectively connected to the two end positions of the left side portion of the lower linkage rack main body, the fixing protrusions at the two ends of the left side portion of the lower linkage rack main body are respectively clamped into the fixing grooves to be fixed. The utility model discloses in, can make things convenient for first wheel carrier through setting up of fixed arch and fixed recess, the second is wheel carrier and last interlock rack installation between the main part, make under first wheel carrier and the second wheel carrier can assemble into integrated configuration with last interlock rack main part fast, and the wheel carrier can share in the slide rail of different length under first wheel carrier and the second, the production and the equipment degree of difficulty have been reduced, make this slide rail device's assembly simple, easy dismounting, it is effectual to slide, can install or dismantle fast, the production efficiency is greatly improved.

Further, still install the gear assembly on the well rail, the gear assembly is including mount pad and gear, the fixed orifices has been seted up on the well rail, the mount pad is fixed in the fixed orifices, the gear sets up on the mount pad, just the upper and lower both ends of gear are stretched out the back and are connected with last interlock rack, lower interlock rack respectively, all be provided with the rack with gear looks adaptation on last interlock rack and the lower interlock rack, when the last rail slides on the well rail, the gear is at the transmission between the rack of last interlock rack and lower interlock rack. The utility model discloses in, through the aforesaid setting, make the gear install the back on the mount pad, can be quick card go into in the rail, after having assembled this slide rail device, the gear with last interlock rack, lower interlock rack can interact, link together and realize mutual transmission, when slide rail device is carrying out the push-and-pull action, go up the interlock rack and under the drive of gear with the interlock rack, can carry out relative motion to make this slide rail device realize the function of three section interlock.

Furthermore, racks are arranged on the first upper wheel frame, the second upper wheel frame and the upper linkage rack main body along the length direction of the first upper wheel frame, the second upper wheel frame and the upper linkage rack main body, the positions of the racks of the first upper wheel frame, the second upper wheel frame and the upper linkage rack main body are opposite, the racks are arranged on the same straight line after being connected, and the racks are arranged on the side edge of the connecting position of the limiting protrusion and the clamping groove; the rack of the lower linkage rack is arranged on the upper linkage rack main body and is arranged along the length direction of the upper linkage rack main body. The utility model discloses in, through the aforesaid setting, make on the first wheel carrier, the second wheel carrier can assemble with the interlock rack main part of different length, do not influence the gear after the equipment and transmit between the rack of last interlock rack and lower interlock rack, reduced the production and the equipment degree of difficulty, quick installation or dismantlement improve production efficiency greatly.

Further, the mounting base comprises a base, a through groove for mounting the gear is formed in the base, a limiting shaft is arranged on the inner wall of the through groove, a shaft hole matched with the limiting shaft is formed in the center of the gear, and when the gear is mounted in the through groove, the limiting shaft extends into the shaft hole to enable the gear to rotate in the through groove, so that transmission is achieved between the upper linkage rack and the lower linkage rack. The utility model discloses in, through the aforesaid setting, make the gear assembly can be better between the rack of last interlock rack and lower interlock rack carry out the transmission to make the interlock rack and lower interlock rack under the drive of gear, can carry out relative motion, thereby make this slide rail device realize the function of three section interlock.

Further, the both ends of base still integrated into one piece are connected with elastic construction, elastic construction is U font structure, elastic construction's tip is provided with spacing step, epaxial fixed orifices including with the mesopore of base looks adaptation and set up in mesopore both sides with the square hole of the spacing step looks adaptation of the elastic construction at base both ends, when the mount pad is installed in epaxially, the base inserts downthehole, and the spacing step card of the elastic construction at base both ends is gone into the square hole simultaneously and is realized fixedly. In the utility model, the base is arranged in the middle hole of the middle rail through the arrangement of the middle hole and the square hole, thereby effectively fixing the horizontal front and back and left and right positions of the gear; in the square hole of well rail also packed into simultaneously of the both ends elastic construction of base spacing step, spacing step set up the effectual upper and lower direction of having fixed the gear to the position of gear assembly and well rail has been fixed, above-mentioned project organization is reasonable, can quick card income well rail after messenger's gear and base installation, simple to operate.

Furthermore, well rail and last rail all include last flat board portion and both sides portion of bending, well rail and the last flat board portion of last rail all are connected through strengthening rib structure with both sides portion of bending, strengthening rib structure is including first point of bending, second point of bending and inclined plane, the both ends on inclined plane are connected with first point of bending and second point of bending integrated into one piece respectively, first point of bending and second point of bending are the arc structure. The utility model discloses in, through the setting on first bending point, second bending point and inclined plane, the last flat plate portion that makes well rail or last rail all bends twice with the connection position of the portion of bending of both sides, forms strengthening rib structure, has consolidated bearing capacity and stationarity, and the atress that makes well rail and last rail can be better, and the structure is more stable.

Compared with the prior art, the utility model discloses to go up the interlock rack and set up to split type structure with lower interlock rack, can simplify the preparation process on making to reduce the cost of manufacture, the components of a whole that can function independently structure can assemble into integrated configuration fast moreover, and the components of a whole that can function independently structure can share in the slide rail of different length, has reduced the production and has assembled the degree of difficulty, makes this slide rail device's assembly simple, easy dismounting, slip effectual, can install fast or dismantle, improves production efficiency greatly.

Drawings

Fig. 1 is an exploded view of a three-section interlocking slide rail device of a drawer according to the present invention.

Fig. 2 is a partially enlarged view of an explosion diagram of a three-section interlocking slide rail device of a drawer according to the present invention.

Fig. 3 is a schematic structural view showing the structure of the gear assembly of the three-section interlocking slide rail device of the drawer of the present invention mounted on the middle rail.

Fig. 4 is a schematic structural view of a gear assembly of a three-section interlocking slide rail device of a drawer according to the present invention.

Fig. 5 is an exploded view of a gear assembly of a three-section interlocking slide rail device of a drawer according to the present invention.

Fig. 6 is a partial plan view of the gear assembly of the three-section interlocking slide rail device of the drawer according to the present invention mounted on the middle rail.

Fig. 7 is a partial cross-sectional view of a gear assembly of a three-section interlocking slide rail device of a drawer according to the present invention mounted on a middle rail.

Fig. 8 is a schematic structural view of a gear of a three-section interlocking slide rail device of a drawer between an upper interlocking rack and a lower interlocking rack according to the present invention.

Fig. 9 is a partial enlarged view of a schematic structural view of a gear of a three-section interlocking slide rail device of a drawer between an upper interlocking rack and a lower interlocking rack according to the present invention.

Fig. 10 is a cross-sectional view of a gear of a three-section interlocking slide rail device of a drawer implemented by the present invention between an upper interlocking rack and a lower interlocking rack.

Fig. 11 is a schematic view of the first explosion mode of the upper interlocking rack of the three-section interlocking slide rail device of the drawer according to the present invention.

Fig. 12 is a schematic diagram of a second explosion mode of an upper interlocking rack of a three-section interlocking slide rail device of a drawer according to the present invention.

Fig. 13 is a schematic view of an assembled upper interlocking rack of a three-section interlocking slide rail device of a drawer according to the present invention.

Fig. 14 is a schematic view of a first explosion mode of a lower interlocking rack of a three-section interlocking slide rail device of a drawer according to the present invention.

Fig. 15 is a schematic view of a second explosion mode of the lower interlocking rack of the three-section interlocking slide rail device of the drawer according to the present invention.

Fig. 16 is a schematic view of the assembled lower interlocking rack of the three-section interlocking slide rail device of the drawer according to the present invention.

Fig. 17 is a schematic view of an assembled first angle structure of a three-section interlocking slide rail device of a drawer according to the present invention.

Fig. 18 is a second angular configuration diagram of the assembled three-section interlocking slide rail device of the drawer according to the present invention.

Fig. 19 is a second angular cross-sectional view of the assembled three-section interlocking slide rail device of the drawer according to the present invention.

Fig. 20 is a partially enlarged view of a second assembled angular cross-sectional view of a three-section interlocking slide rail device for a drawer according to the present invention.

Fig. 21 is a schematic view showing an embodiment of a three-section interlocking slide rail device for a drawer according to the present invention mounted on the drawer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-21, the utility model provides a three section interlock slide rail device of drawer, including last rail 1, well rail 2, fixed rail 3, go up interlock rack 4 and lower interlock rack 5, well rail 2 is through linkage rack 5 sliding connection down on fixed rail 3, go up rail 1 through last interlock rack 4 sliding connection on well rail 2, interlock rack 4 on its characterized in that, lower interlock rack 5 is split type structure, it installs between well rail 2 and last rail 1 to go up interlock rack 4 equipment back, install between fixed rail 3 and well rail 2 after lower interlock rack 5 assembles. The utility model discloses in, to go up interlock rack 4 and set up to split type structure with lower interlock rack 5, can simplify the preparation process on making to reduce the cost of manufacture, the components of a whole that can function independently structure can assemble into integrated configuration fast moreover, and the components of a whole that can function independently structure can share in the slide rail of different length, has reduced the production and has assembled the degree of difficulty, makes this slide rail device's assembly simple, easy dismounting, slip effectual, can install fast or dismantle, improves production efficiency greatly.

In this embodiment, the upper interlocking rack 4 includes a first upper wheel frame 41, a second upper wheel frame 42 and an upper interlocking rack main body 43, the first upper wheel frame 41 and the second upper wheel frame 42 are detachably connected to the front and rear ends of the upper interlocking rack main body 43, the upper wheels 10 are mounted on the upper portions of the first upper wheel frame 41 and the second upper wheel frame 42, the spherical wheels 20 are mounted on the left and right sides of the first upper wheel frame 41 and the second upper wheel frame 42, and the upper wheels 10 and the spherical wheels 20 are located between the upper rail 1 and the middle rail 2. In the utility model, the upper linkage rack 4 comprises a first upper wheel frame 41, a second upper wheel frame 42 and an upper linkage rack main body 43, through the arrangement of the split structure of the upper linkage rack 4, the manufacturing process can be simplified in manufacturing, thereby reducing the manufacturing cost, and the split structure can be quickly assembled into an integrated structure, the first upper wheel frame 41 and the second upper wheel frame 42 can be shared in slide rails with different lengths, thereby reducing the difficulty in production and assembly, and ensuring that the slide rail device has simple assembly, convenient assembly and disassembly, good sliding effect, quick assembly or disassembly and greatly improving the production efficiency; the upper wheel 10 and the spherical wheel 20 are arranged between the upper rail 1 and the middle rail 2, and can be used for mutual supporting, rolling and orienting actions of the middle rail 2 and the upper rail 1 in the running process of the sliding rail.

In this embodiment, the front and rear ends of the upper interlocking rack body 43 are both provided with a slot 431 and a stopper 432 disposed at an opening of the slot 431, one ends of the first upper wheel frame 41 and the second upper wheel frame 42 facing the upper interlocking rack body 43 are both provided with a stopper 410 adapted to the slot 431, and when the first upper wheel frame 41 and the second upper wheel frame 42 are respectively connected to the front and rear ends of the upper interlocking rack body 43, the stopper 410 of the first upper wheel frame 41 and the stopper 410 of the second upper wheel frame 42 respectively slide into the slot 431 through the stoppers 432 at the two ends of the upper interlocking rack body 43 to be fixed. The utility model discloses in, through draw-in groove 431, setting up of stopper 432 and spacing arch 410 can make things convenient for first last wheel carrier 41, wheel carrier 42 and the installation between the last interlock rack main part 43 on the second, make first last wheel carrier 41 and second go up the wheel carrier 42 can assemble into integrated configuration with last interlock rack main part 43 fast, and first last wheel carrier 41 and second go up wheel carrier 42 can share in the slide rail of different length, the production and the equipment degree of difficulty have been reduced, make this slide rail device's assembly simple, easy dismounting, sliding effect is good, can install fast or dismantle, and the production efficiency is greatly improved.

In the present embodiment, the lower interlocking rack 5 includes a first lower wheel frame 51, a second lower wheel frame 52 and a lower interlocking rack main body 53, the first lower wheel frame 51 and the second lower wheel frame 52 are respectively detachably connected to two end positions of a left side portion of the lower interlocking rack main body 53, the side portions of the first lower wheel frame 51 and the second lower wheel frame 52 facing the lower interlocking rack main body 53 are mounted with large wheels 30, the upper portions and the bottom portions of the first lower wheel frame 51 and the second lower wheel frame 52 are mounted with middle wheels 40, the right side portion of the lower interlocking rack main body 53 is mounted with small wheels 50 at two end positions opposite to the first lower wheel frame 51 and the second lower wheel frame 52, and the large wheels 30, the middle wheels 40 and the small wheels 50 are located between the fixed rail 3 and the middle rail 2. In the utility model, the upper and lower linkage rack 5 comprises a first lower wheel frame 51, a second lower wheel frame 52 and a lower linkage rack main body 53, through the arrangement of the split structure of the lower linkage rack 5, the manufacturing process can be simplified in manufacturing, thereby reducing the manufacturing cost, and the split structure can be quickly assembled into an integrated structure, the first lower wheel frame 51 and the second lower wheel frame 52 can be shared in slide rails with different lengths, the production and assembly difficulty is reduced, the slide rail device is simple in assembly, convenient to disassemble and assemble, good in sliding effect, and capable of being quickly assembled or disassembled, and the production efficiency is greatly improved; the large wheel 30, the middle wheel 40 and the small wheel 50 are positioned between the fixed rail 3 and the middle rail 2, and can be used for mutual supporting, rolling and orienting functions of the middle rail 2 and the fixed rail 3 in the running process of the sliding rail.

In this embodiment, the fixing protrusions 531 are disposed at both ends of the left side portion of the lower interlocking rack main body 53, the fixing grooves 510 adapted to the fixing protrusions 531 are disposed at the side portions of the first lower wheel frame 51 and the second lower wheel frame 52 facing the lower interlocking rack main body 53, and when the first lower wheel frame 51 and the second lower wheel frame 52 are respectively connected to both ends of the left side portion of the lower interlocking rack main body 53, the fixing protrusions 531 at both ends of the left side portion of the lower interlocking rack main body 53 are respectively clamped into the fixing grooves 510 to be fixed. The utility model discloses in, setting through fixed protrusion 531 and fixed recess 510 can make things convenient for first wheel carrier 51, the second wheel carrier 52 and the installation between the interlock rack main part 53 down, make first wheel carrier 51 and second wheel carrier 52 can assemble into integrated configuration with interlock rack main part 53 down fast, and first wheel carrier 51 can share in the slide rail of different length with second wheel carrier 52 down, the production and the equipment degree of difficulty have been reduced, make this slide rail device's assembly simple, easy dismounting, it is effectual to slide, can install or dismantle fast, the production efficiency is greatly improved.

In this embodiment, the gear assembly 6 is further installed on the middle rail 2, the gear assembly 6 includes an installation seat 61 and a gear 62, a fixing hole 21 is formed in the middle rail 2, the installation seat 61 is fixed in the fixing hole 21, the gear 62 is arranged on the installation seat 61, and the upper end and the lower end of the gear 62 are connected with the upper linkage rack 4 and the lower linkage rack 5 respectively after extending out, racks 60 matched with the gear 62 are arranged on the upper linkage rack 4 and the lower linkage rack 5, and when the upper rail 1 slides on the middle rail 2, the gear 62 transmits between the racks 60 of the upper linkage rack 4 and the lower linkage rack 5. The utility model discloses in, through the aforesaid setting, make gear 62 install the back on mount pad 61, the card that can be quick goes into in the well rail 2, after having assembled this slide rail device, gear 62 and last interlock rack 4, lower interlock rack 5 can interact, link together and realize mutual transmission, when slide rail device is carrying out the push-and-pull action, go up interlock rack 4 and lower interlock rack 5 under gear 62's drive, can carry out relative motion, thereby make this slide rail device realize the function of three section interlocks.

In this embodiment, the first upper wheel frame 41, the second upper wheel frame 42 and the upper linkage rack main body 43 are all provided with racks 60 along the length direction thereof, the positions of the racks 60 of the first upper wheel frame 41, the second upper wheel frame 42 and the upper linkage rack main body 43 are opposite, are on a straight line after being connected, and are located at the side of the connecting position of the limiting protrusion 410 and the clamping groove 431; the rack 60 of the lower interlocking rack 5 is provided on the lower interlocking rack main body 53 and is provided along the longitudinal direction thereof. The utility model discloses in, through the aforesaid setting, make on the first wheel carrier 41, the second wheel carrier 42 can be assembled with the interlock rack main part of different length, do not influence the gear 62 after the equipment and transmit between the rack 60 of last interlock rack 4 and lower interlock rack 5, reduced the production and the equipment degree of difficulty, fast speed installation or dismantlement improve production efficiency greatly.

In this embodiment, the mounting base 61 includes a base 611, a through groove 6111 for mounting the gear 62 is provided on the base 611, a limit shaft 6112 is provided on an inner wall of the through groove 6111, a shaft hole 621 adapted to the limit shaft 6112 is provided at a central position of the gear 62, and when the gear 62 is mounted in the through groove 6111, the limit shaft 6112 extends into the shaft hole 621, so that the gear 62 can rotate in the through groove 6111, thereby transmitting between the upper interlocking rack 4 and the rack of the lower interlocking rack 5. The utility model discloses in, through the aforesaid setting, make gear assembly 6 can be better carry out the transmission between the rack of last interlock rack 4 and lower interlock rack 5 to make interlock rack 4 and lower interlock rack 5 under the drive of gear 62, can carry out relative motion, thereby make this slide rail device realize the function of three section interlock.

In this embodiment, the two ends of the base 611 are further integrally connected with an elastic structure 612, the elastic structure 612 is a U-shaped structure, the end of the elastic structure 612 is provided with a limit step 6121, the fixing hole 21 on the central shaft includes a central hole 211 adapted to the base 611 and square holes 212 arranged at two sides of the central hole 211 and adapted to the limit step 6121 of the elastic structure 612 at two ends of the base 611, when the mounting base 61 is mounted on the central shaft, the base 611 is inserted into the central hole 211, and simultaneously the limit steps 6121 of the elastic structure 612 at two ends of the base 611 are clamped into the square holes 212 to be fixed. In the utility model, through the arrangement of the middle hole 211 and the square hole 212, the base 611 is arranged in the middle hole 211 of the middle rail 2, and the horizontal front-back and left-right positions of the gear 62 are effectively fixed; the limit steps 6121 of the elastic structures 612 at the two ends of the base 611 are also arranged in the square hole 212 of the middle rail 2, the limit steps 6121 are arranged to effectively fix the up-and-down direction of the gear 62, so that the positions of the gear assembly 6 and the middle rail 2 are fixed, the design structure is reasonable, the gear 62 and the base 611 can be rapidly clamped into the middle rail 2 after being installed, and the installation is convenient.

In the present embodiment, the bending angles of the two sides of the middle rail 2 and the upper rail 1 are both rib structures 70. The utility model discloses in, setting up of strengthening rib structure 70 makes the atress that well rail 2 and upper rail 1 can be better, and the structure is more stable. The middle rail 2 and the upper rail 1 respectively comprise an upper flat plate part 100 and two side bending parts 200, the upper flat plate part 100 and the two side bending parts 200 of the middle rail 2 and the upper rail 1 are connected through a reinforcing rib structure 70, the reinforcing rib structure 70 comprises a first bending point 701, a second bending point 702 and an inclined plane 703, two ends of the inclined plane 703 are respectively connected with the first bending point 701 and the second bending point 702 in an integrated forming mode, and the first bending point 701 and the second bending point 702 are both arc-shaped structures. The utility model discloses in, through the setting of first bending point 701, second bending point 702 and inclined plane 703, make the last plat plate portion 100 of well rail 2 or upper rail 1 and the both sides portion of bending 200's of being connected position all bend twice, form strengthening rib structure 70, consolidated bearing capacity and stationarity, make the atress that well rail 2 and upper rail 1 can be better, the structure is more stable.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a three section interlock slide rail device of drawer, is including last rail, well rail, fixed rail, last interlock rack and lower interlock rack, well rail is through interlock rack sliding connection down on fixed rail, go up the rail through last interlock rack sliding connection on well rail, its characterized in that go up interlock rack, lower interlock rack and be split type structure, it installs between well rail and last rail to go up the interlock rack equipment back, install between fixed rail and well rail after the interlock rack equipment down.

2. The three-section linkage sliding rail device of a drawer according to claim 1, wherein the upper linkage rack comprises a first upper wheel frame, a second upper wheel frame and an upper linkage rack main body, the first upper wheel frame and the second upper wheel frame are detachably connected to the front end and the rear end of the upper linkage rack main body respectively, upper wheels are mounted on the upper portions of the first upper wheel frame and the second upper wheel frame, spherical wheels are mounted on the left side and the right side of the first upper wheel frame and the second upper wheel frame, and the upper wheels and the spherical wheels are located between the upper rail and the middle rail.

3. The three-section linkage sliding rail device of the drawer according to claim 2, wherein the front and rear ends of the upper linkage rack body are provided with a slot and a stopper disposed at an opening of the slot, the ends of the first upper wheel frame and the second upper wheel frame facing the upper linkage rack body are provided with a stopper protrusion adapted to the slot, and when the first upper wheel frame and the second upper wheel frame are connected to the front and rear ends of the upper linkage rack body, the stopper protrusion of the first upper wheel frame and the stopper protrusion of the second upper wheel frame slide into the slot through the stoppers at the two ends of the upper linkage rack body to be fixed.

4. The three-section linkage sliding rail device of the drawer according to claim 3, wherein the lower linkage rack comprises a first lower wheel frame, a second lower wheel frame and an upper linkage rack main body, the first lower wheel frame and the second lower wheel frame are respectively detachably connected to two end positions of a left side portion of the lower linkage rack main body, a large wheel is installed on a side portion of the first lower wheel frame and the second lower wheel frame facing the lower linkage rack main body, middle wheels are installed on upper portions and bottoms of the first lower wheel frame and the second lower wheel frame, small wheels are installed on two end positions of a right side portion of the lower linkage rack main body, which are opposite to the first lower wheel frame and the second lower wheel frame, and the large wheel, the middle wheels and the small wheels are located between the fixed rail and the middle rail.

5. The three-section linkage sliding rail device of the drawer according to claim 4, wherein the lower linkage rack main body has fixing protrusions at two ends of the left side portion, the first lower wheel frame and the second lower wheel frame have fixing grooves adapted to the fixing protrusions at the side portions facing the upper linkage rack main body, and when the first lower wheel frame and the second lower wheel frame are respectively connected to two ends of the left side portion of the lower linkage rack main body, the fixing protrusions at two ends of the left side portion of the lower linkage rack main body are respectively clamped into the fixing grooves to be fixed.

6. The three-section linkage sliding rail device of the drawer according to claim 5, wherein the middle rail is further provided with a gear assembly, the gear assembly comprises a mounting seat and a gear, the middle rail is provided with a fixing hole, the mounting seat is fixed in the fixing hole, the gear is arranged on the mounting seat, the upper end and the lower end of the gear extend out and then are respectively connected with the upper linkage rack and the lower linkage rack, the upper linkage rack and the lower linkage rack are respectively provided with a rack matched with the gear, and when the upper rail slides on the middle rail, the gear is driven between the racks of the upper linkage rack and the lower linkage rack.

7. The three-section linkage sliding rail device of the drawer according to claim 6, wherein the first upper wheel frame, the second upper wheel frame and the upper linkage rack main body are all provided with racks along the length direction thereof, the first upper wheel frame, the second upper wheel frame and the racks of the upper linkage rack main body are opposite in position, are on a straight line after being connected and are positioned at the side of the connecting position of the limiting protrusion and the clamping groove; the rack of the lower linkage rack is arranged on the upper linkage rack main body and is arranged along the length direction of the upper linkage rack main body.

8. The three-section linkage slide rail device of the drawer according to claim 6, wherein the mounting base comprises a base, a through groove for mounting the gear is arranged on the base, a limiting shaft is arranged on the inner wall of the through groove, a shaft hole matched with the limiting shaft is arranged at the center of the gear, and when the gear is mounted in the through groove, the limiting shaft extends into the shaft hole to enable the gear to rotate in the through groove, so that transmission is performed between the upper linkage rack and the rack of the lower linkage rack.

9. The three-section linkage sliding rail device of the drawer according to claim 8, wherein the two ends of the base are further integrally connected with an elastic structure, the elastic structure is a U-shaped structure, the end of the elastic structure is provided with a limit step, the fixing hole on the middle rail comprises a middle hole matched with the base and square holes arranged on the two sides of the middle hole and matched with the limit steps of the elastic structure at the two ends of the base, when the mounting base is mounted on the middle rail, the base is inserted into the middle hole, and meanwhile, the limit steps of the elastic structure at the two ends of the base are clamped into the square holes to be fixed.

10. The three-section linkage sliding rail device of a drawer according to claim 1, wherein the bending angles at both sides of the middle rail and the upper rail are both of a reinforcing rib structure.