CN106724190B

CN106724190B - Full-extension drawer slide rail

Info

Publication number: CN106724190B
Application number: CN201710157310.8A
Authority: CN
Inventors: 董旭晖
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-03-16
Filing date: 2017-03-16
Publication date: 2022-10-18
Anticipated expiration: 2037-03-16
Also published as: CN106724190A

Abstract

The invention discloses a fully-extended drawer slide rail which comprises a bottom rail fixedly connected with the inner side surface of a cabinet body side plate, a surface rail slidably mounted on the bottom rail, a roller slide bearing assembly positioned between the bottom rail and the surface rail, a cladding shell covering the upper part and two side surfaces of the surface rail and fixedly connected with a drawer box, and a supporting wheel mounted between the surface rail and the cladding shell and rolling to support the cladding shell, wherein a limiting wheel and a side protruding strip arranged along the length direction of the surface rail are arranged between the surface rail and the inner side surface of the cladding shell, and the limiting wheel rolls to abut against the side protruding strip to prevent the inner end of the cladding shell from tilting. The supporting wheels are arranged between the surface rail and the cladding shell, so that the cladding shell can further slide for a distance on the basis of the sliding of the surface rail, and meanwhile, the surface rail is provided with the limiting wheels to prevent the lateral deviation from keeping a stable supporting state between the surface rail and the cladding shell, so that the drawer can be unfolded completely, articles can be taken and placed conveniently, and the drawer can be kept to have the largest space and be in a stable non-inclined article containing state.

Description

Full-expansion drawer slide rail

Technical Field

The invention relates to a drawer slide rail, in particular to a full-extension drawer slide rail.

Background

The existing drawer installation is mostly in two forms, one is that the drawer is directly slid and rubbed to be pushed into a drawer frame of a cabinet or a desk, the drawer and the frame rub with each other in the process of pulling and pushing the drawer to be closed, abrasion is generated in the long term, certain noise is generated in normal use, the drawer is not suitable for being used in large-area offices, the requirement on drawer materials is higher, and the drawer is inclined after being pulled out, so that the drawer is not beneficial to orderly placing of articles; the other type is that the sliding rails are arranged on two sides of the drawer and are installed with the drawer frame, the drawer can be stable and not inclined, noise is low, and friction and abrasion are low.

The rail drawer has a simple form, slides by engaging and engaging the wheel rails with each other, and is removable, but its light and thin and weak structure is not durable. Therefore, the sliding rail drawer with two sliding rails sliding mutually and with a more stable structure due to the precise matching of the roller assemblies appears, however, the two sliding rails of the drawer cannot be completely staggered, the drawer box cannot be completely drawn out, only 2/3 or a little more than the drawer box can be pulled out, the drawer cannot be completely unfolded, and the drawer has difficulty in taking the innermost articles of the drawer. The solving method is only to shorten the drawer box to make the length of the drawer box smaller than the length of the corresponding slide rail and drawer frame, thus causing the waste of space.

Then, a sliding rail structure with three rails appears, and the drawer box connected with the drawer box can be as long as the sliding rail, even longer than the sliding rail. However, the material and processing cost of the three rails are high, the resources are wasted, and the product competitiveness is insufficient.

Along with the improvement of the market on the product function and the market segment requirement, an integrated product of a track and a coating shell appears. The product is mainly characterized in that: (1) the two side plates of the drawer can be replaced by the coating shell according to the requirement of market individual change, and the drawer has the advantages that; the surface color and the section shape can be different according to the style of the furniture. (2) The standardization degree is improved, the installation is convenient and quick, and a brand-new solution is provided for DIY.

As described above, in the market, the rail in the rail + cladding shell generally uses three sections for full extension, and in order to save cost, a small part uses two sections, and then, a two-section and half-section slide rail is provided, and a section of half-section auxiliary rail is welded and fixed at the inner end of the surface rail, and the drawer can further slide out for a small distance by arranging the roller clamping auxiliary rail on the cladding shell, so that full extension of the drawer in a horizontal stable state is realized, and articles can be conveniently taken and placed. However, the slide rail is still not the simplest, and has the problems of resource saving and high cost.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a fully-extended drawer slide rail which uses two sections of rails to fully extend a drawer, thereby simplifying the drawer, saving materials and reducing the processing cost.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a full exhibition drawer slide rail, its include with cabinet body curb plate medial surface fixed connection's end rail, slidable mounting in the face rail of end rail, be located the smooth support subassembly of gyro wheel between end rail and the face rail, buckle closure in face rail top and both sides face and with drawer case fixed connection's cladding shell, install and roll the top between face rail and cladding shell and hold in the palm the supporting wheel of cladding shell, the face rail with the side sand grip that is equipped with spacing round and sets up along face rail length direction between the medial surface of cladding shell, spacing round of rolling conflict side sand grip prevents the inner perk of cladding shell, the side sand grip is located the face rail and spacing round is installed in the cladding shell, perhaps, the cladding shell is located to the side sand grip and spacing round is installed in the face rail.

As an improvement of the technical scheme of the fully-extended drawer slide rail, the inner top surface of the coating shell is provided with a wheel groove for the supporting wheel to roll along the length direction, and the bottom surface of the wheel groove is in contact with the top of the peripheral surface of the wheel.

As an improvement of the technical scheme of the fully-extended drawer slide rail, the face rail is provided with a blocking piece which is fixedly connected with the face rail and protrudes out of the periphery of the face rail, and the middle part of the covering shell is provided with a brake arm which corresponds to the blocking piece in position and prevents the covering shell from excessively sliding out.

As an improvement of the technical scheme of the fully-extended drawer slide rail, the coating shell is provided with a vertical baffle plate which is suspended and extends to push the surface rail to return.

As an improvement of the technical scheme of the fully-extended drawer slide rail, the side surface of the face rail is provided with a transverse hourglass-shaped guide groove, and the side convex strip is positioned in the guide groove.

As an improvement of the technical scheme of the fully-extended drawer slide rail, the surface rail is provided with a synchronous frame, the synchronous frame is provided with a synchronous wheel set, the synchronous wheel set comprises an inner synchronous wheel positioned on the inner side of the surface rail and an outer synchronous wheel positioned on the outer side of the surface rail, the inner synchronous wheel and the outer synchronous wheel synchronously rotate, the roller slide supporting assembly comprises a wheel frame, the wheel frame is provided with a rolling groove for the inner synchronous wheel to roll in and roll, and the lateral convex strip is provided with a resistance surface and presses against the outer synchronous wheel.

As an improvement of the technical scheme of the fully-extended drawer slide rail, the limiting wheel is transversely arranged in the middle of the face rail, is partially suspended on the side and can be abutted against the inner side surface of the cladding shell so as to prevent the cladding shell from being laterally deviated, and the suspended part of the limiting wheel is positioned on the upper side of the side convex strip and can rotate along with the movement of the side convex strip so as to press the side convex strip and prevent the inner end of the cladding shell from tilting.

As an improvement of the technical scheme of the fully-extended drawer slide rail, the covering shell is provided with a bayonet, the face rail is provided with a synchronous pull buckle corresponding to the bayonet, the synchronous pull buckle is provided with a pull handle which can be partially upwards inserted into the bayonet to enable the covering shell and the face rail to synchronously move, and a support arm which is partially in sliding contact with the bottom rail to enable the pull handle to extend into the bayonet.

As an improvement of the technical scheme of the fully-extended drawer slide rail, the face rail is provided with a push-pull seat, the synchronous pull buckle is provided with a connecting arm, one end of the connecting arm is fixedly connected with the pull-push handle and forms an L-shaped handle body, and the other end of the connecting arm is hinged to the push-pull seat so as to swing to enable the pull-push handle to leave the bayonet.

As an improvement of the technical scheme of the fully-extended drawer slide rail, the bracket arm is connected with the connecting arm to form a V-shaped body, so that the synchronous pull buckle is in a bent hook shape or a three-fork shape.

The invention has the beneficial effects that: the supporting wheels are arranged between the surface rail and the coating shell, so that the coating shell can further slide for a distance on the basis of the sliding of the surface rail, meanwhile, the surface rail is provided with the limiting wheels and matched with the side convex strips, the inner end of the coating shell can be prevented from tilting, the drawer is guaranteed to be pulled out and can maintain a horizontal stable supporting state, the drawer can be unfolded completely, articles can be taken and placed conveniently, and the drawer can be kept to have the largest space and be in a stable and non-inclined article containing state.

Drawings

Fig. 1 is a schematic view of a first three-dimensional structure of a fully-extended linkage drawer slide according to an embodiment of the present invention.

FIG. 2 is a second perspective view of an embodiment of a fully extended linkage drawer slide.

FIG. 3 is a perspective view of the bottom rail and roller slide bearing assembly combination of the drawer slide.

FIG. 4 is a schematic perspective view of the outer end of the drawer slide at an oblique elevation angle.

Fig. 5 is a schematic perspective view of a top-down view of the outer end of the drawer slide.

FIG. 6 is a side view of the outer end of the drawer slide.

Fig. 7 is a schematic perspective view of a drawer slide with a tilted bottom view in the middle.

FIG. 8 is a partial oblique top view perspective view of a timing wheel position of the drawer slide.

FIG. 9 is a perspective view of a partial tilt angle of the timing wheel position of the drawer slide.

FIG. 10 is a perspective view of an embodiment of a drawer slide with a combination of a support wheel and a synchronous buckle.

FIG. 11 is a schematic side view of an embodiment of a drawer slide with a combination of a support wheel and a synchronization tab.

Fig. 12 is a schematic perspective view of a synchronous buckle in an embodiment of a drawer slide.

Fig. 13 is a first perspective view of a synchronizing wheel set in an embodiment of a drawer slide.

Fig. 14 is a second perspective view of a synchronizing wheel set in an embodiment of a drawer slide.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1 to fig. 6, the present invention relates to a fully-extended drawer slide rail, which includes a bottom rail 11 fixedly connected to an inner side surface of a side plate of a cabinet, a face rail 21 slidably mounted on the bottom rail, a roller slide support assembly 12 located between the bottom rail 11 and the face rail 21, a covering shell 31 covering and fixedly connected to a drawer box above and on both side surfaces of the face rail 21, and a support wheel 66 vertically or obliquely mounted between the face rail 21 and the covering shell 31 for rolling and supporting the covering shell, wherein a highest point of the support wheel 66 should be higher than a top surface of the face rail 21 to separate the covering shell 31 from the face rail 21, a limit wheel 86 and a side protrusion 38 disposed along a length direction of the face rail are disposed between a middle section of the face rail 21 and the inner side surface of the covering shell 31, the limit wheel 86 rolls against the side protrusion 38 to prevent an inner end of the covering shell 31 from tilting, the side protrusion 38 is disposed on the face rail and the limit wheel 86 is mounted on the covering shell 31, or the side protrusion 38 is disposed on the covering shell 31 and the limit wheel 86 is disposed on the face rail 21. The supporting wheels 66 are arranged between the surface rails 21 and the coating shell 31, so that the coating shell can further slide for a distance on the basis of the sliding of the surface rails 21, meanwhile, the surface rails 21 are provided with the limiting wheels 86 and the side convex strips 38 to be matched, the inner ends of the coating shell 31 and the drawer box can be prevented from being tilted, the coating shell 31 and the surface rails 21 can be stably and accurately matched, the drawer is guaranteed to be pulled out and can be maintained in a horizontal stable supporting state, the drawer is prevented from being fully unfolded, articles can be conveniently taken and placed, and the drawer can be kept in a maximum space and a stable and non-inclined article containing state. At least one limiting wheel 86 can be arranged on one set of slide rail, one set of slide rail is respectively arranged on each of two sides of the drawer, and at least one limiting wheel 86 is arranged on each of two sides of the drawer to limit the transverse positions of the drawer and the cladding shell 31, so that the stability of pushing and pulling the drawer is ensured, the installation is convenient, and the requirement on the assembly precision is reduced. If the two sides of the surface rail 21 are provided with the limiting wheels 86, the mounting precision of the cladding shell 31 and the drawer can be improved, and the mounting and the use of the cladding shell 31 and the drawer are more stable and reliable.

Wherein the limiting wheels 86 are arranged vertically or transversely or obliquely. A specific combined structure is that the inner side surface of the covering shell 31 is provided with side convex strips 38 along the length direction, the middle part of the surface rail 21 is provided with a limiting wheel 86 which is lower than the supporting wheel 66 so as to be in rolling contact with the side convex strips 38 to prevent the inner end of the covering shell 31 from tilting, the wheel groove 36 and the side convex strips 38 are respectively positioned at the upper side and the lower side of the supporting wheel 66 and the limiting wheel 86, the high-level supporting wheel 66 is positioned in the wheel groove 36 to support the covering shell 31, and the low-level limiting wheel 86 presses the side convex strips 38, so that the covering shell 31 is limited to prevent the covering shell 31 from moving up and down, and the matching stability is further improved.

The side protruding strips 38 and the limiting wheels 86 may be oppositely arranged, the side protruding strips 38 are arranged on the surface rails 21, the limiting wheels 86 are mounted on the covering shell 31, and the limiting wheels 86 are positioned below the side protruding strips 38 and are staggered from the horizontal position of the supporting wheels 66, so as to prevent the inner end of the covering shell 31 from tilting.

The sliding rail comprises a covering shell, a sliding rail and a side baffle assembly, wherein the covering shell and the decorative shell form the sliding rail, the side baffle assembly is spliced with a bottom plate, a front plate and a rear plate of a drawer to form a drawer box, and the decorative shell plays a role of a side baffle. The slide rail and the side stop component can be used for assembling a high-quality self-assembly drawer.

More preferably, the inner top surface of the covering shell 31 is provided with a wheel groove 36 along the length direction thereof for the support wheel 66 to roll, and the bottom surface of the wheel groove 36 is in contact with the top of the wheel periphery. The wheel groove 36 is arranged to limit the movable range of the supporting wheel 66 arranged on the surface rail, so that the supporting wheel 66 can only roll in the wheel groove 36, the assembling precision of the supporting wheel 66 and the coating shell 31 is improved, and the matching stability is improved. A supporting wheel extending downwards can be mounted at the position, close to the inner end, of the wrapping shell 31, the supporting wheel abuts against the top surface rail 21 to support the rear portion, an upward supporting wheel is mounted on the surface rail 21, the wrapping shell 31 is supported by the two supporting wheels in the front and back direction, so that the supporting wheels are arranged between the wrapping shell and the surface rail 21 in the front and back direction, and the supporting wheels are close to each other in the sliding process of the sliding rail, so that two wheels are supported in a balanced rolling mode all the time.

Preferably, referring to fig. 7, the face rail 21 is provided with a stopper 22 fixedly connected to the face rail 21 and protruding from the periphery of the face rail 21, and the middle of the covering shell 31 is provided with a stopper arm 33 corresponding to the stopper 22 to prevent the covering shell 31 from sliding out excessively. The blocking member 22 is disposed to block the stopper arm 33 from passing over the blocking member 22, so that the relative sliding movement between the covering case 31 and the face rail 21 is stopped, and the drawer is prevented from sliding out and falling.

Preferably, the covering shell 31 is provided with a vertical stop piece 37 which overhangs and pushes the face rail 21 to return, and under the condition of no action of other linkage mechanisms, the covering shell 31 is pushed synchronously in during the process of pushing the drawer to retract, and the vertical stop piece 37 can drive the face rail 21 to retract backwards. In the case where the covering case 31 is linked with the face rail 21 at the entire stroke, the vertical stopper 37 functions as a stopper for stopping the return stroke when the return stroke reaches the end. In addition, the surface rail 21 can also be provided with a buffer elastic sheet 63 corresponding to the position of the vertical baffle sheet 37 to abut against the vertical baffle sheet 37, so that direct rigid impact of the vertical baffle sheet 37 on the surface rail 21 and a corresponding component is avoided, and the vibration and noise are reduced, and the integrity of the component can be buffered and protected.

Preferably, as shown in fig. 8 and 9, the lateral surface of the surface rail 21 is provided with a guide groove 93 having a shape of a horizontal hourglass, the side protruding strip 38 is located in the guide groove 93, and the side protruding strip 38 and the guide groove 93 cooperate with each other in a guiding direction to improve the stability of the cooperating movement of the covering shell 31 and the surface rail during the relative sliding movement of the covering shell 31 and the surface rail 21. The transverse hourglass shape of the guide groove 93 is a flat dumbbell shape, openings at two ends are wider, so that the guide is convenient to guide, the middle of the guide groove is narrowed to limit the height position of the side raised line, and the sliding guide and correction are realized.

More preferably, referring to fig. 13 and 14, the surface rail 21 is provided with a synchronizing frame 91, the synchronizing frame 91 is provided with a synchronizing wheel set 92, the synchronizing wheel set 92 comprises an inner synchronizing wheel 98 located inside the surface rail 21 and an outer synchronizing wheel 96 located outside the surface rail 21, the inner synchronizing wheel 98 and the outer synchronizing wheel 96 rotate synchronously, the roller wheel slide bearing assembly 12 comprises a wheel frame 15, the wheel frame 15 is provided with a rolling groove 18 for the inner synchronizing wheel 98 to roll in, and the side protruding strip 38 is provided with a resistance surface 39 and presses against the outer synchronizing wheel. The surface rail 21 and the bottom rail 11 of the drawer are generally square pipes with half-surface openings and are groove-shaped, three and half surfaces are arranged on four sides of the whole circumference, and half surfaces are provided with slits, so that the surface rail 21 and the bottom rail 11 can be mutually buckled and sleeved. The roller support assembly 12 is disposed between the buckled (overlapped) portions of the face rail 21 and the bottom rail 11, and the roller support assembly 12 includes a wheel frame 15 and a plurality of rollers 16 mounted to the wheel frame 15, so that the bottom rail 11 can support the face rail 21 and can flexibly slide relative to each other. The bottom rail 11 is fixed during sliding, and the face rail 21 slides twice as far as the wheel frame 15. The inner and outer synchronizing wheels of the synchronizing wheel set 92 mounted on the surface rail 21 push the wheel carrier 15 and the covering shell 31 in opposite directions, so that the moving directions of the surface rail 21 opposite to the covering shell 31 and the wheel carrier 15 are opposite, the sliding speed of the covering shell 31 is greater than that of the surface rail 21, the sliding distance between the covering shell 31 and the drawer is greater than that of the surface rail 21, full extension is realized, and articles can be taken and placed conveniently.

Preferably, the limiting wheel 86 is transversely installed in the middle of the face rail 21 and partially suspended to the side and can abut against the inner side of the covering shell 31 to prevent the covering shell 31 from deviating laterally and abut against the inner side of the covering shell 31 to prevent the covering shell 31 from deviating laterally, so as to maintain the stable supporting state and the stable pushing and pulling state of the drawer. The suspended part of the limiting wheel 86 is located on the upper side of the side protruding strip 93 and can rotate along with the movement of the side protruding strip 93, so that the side protruding strip 93 is pressed to prevent the inner end of the covering shell 31 from tilting, the limiting wheel 86 simultaneously plays roles of lateral limiting and upper and lower limiting, and the matching stability is further improved.

More preferably, referring to fig. 10, 11 and 12, the covering shell 31 is provided with a bayonet 35, the face rail 21 is provided with a synchronous pull buckle 51 corresponding to the bayonet 35, the synchronous pull buckle 51 is provided with a pull handle 52 capable of being partially inserted upwards into the bayonet 35 to enable the covering shell 31 and the face rail to move synchronously, and a support arm 55 partially in sliding contact with the bottom rail 11 to enable the pull handle 52 to extend into the bayonet. The bottom rail 11 supports the supporting arm 55, so that the bayonet 35 and the pull-push handle 52 upwards inserted into the bayonet 35 are blocked mutually, and the surface rail 21 and the cladding shell 31 are kept moving synchronously; when the synchronous pull buckle 51 slides out of the bottom rail 11 and the supporting arm 55 is released from the supporting of the bottom rail 11, the pull-out handle 52 falls off under the action of gravity and leaves the bayonet, the blocking of the bayonet 35 and the pull-out handle 52 is released, and the cladding shell 31 and the surface rail 21 can move relatively.

Preferably, the surface rail 21 is provided with a push-pull seat 61, the synchronous pull buckle 51 is provided with a connecting arm 53, one end of the connecting arm is fixedly connected with the pull-pull handle 52 and forms an L-shaped handle body, and the other end of the connecting arm 53 is hinged to the push-pull seat 61 so as to swing to enable the pull-pull handle 52 to leave the bayonet 35. The pull handle 52 and the connecting arm 53 form an L-shaped handle body, so that the hinged position deviates from the center of gravity, and the pull handle 52 can fall to release the constraint.

Preferably, the supporting arm 55 is connected with the connecting arm 53 to form a V-shaped body, so that the synchronous pull buckle 51 is in a bent hook shape or a three-fork shape, the sliding supporting positions of the supporting arm 55 and the bottom rail 11 are also far away from the hinge shaft and the top end of the pull handle, the elasticity of the component is increased, the buffering effect is improved, the component is softer, and the component can be compressed and not damaged when the return stroke is not in time.

The above disclosure is only for the preferred embodiment of the present invention, and it should be understood that the present invention is not limited thereto, and the invention is not limited to the above disclosure.

Claims

1. A full-extension drawer slide rail is characterized in that: the rolling type counter-rotating wardrobe comprises a bottom rail fixedly connected with the inner side surface of a side plate of a wardrobe body, a surface rail slidably mounted on the bottom rail, a roller sliding support assembly positioned between the bottom rail and the surface rail, a coating shell covered above the surface rail and two side surfaces and fixedly connected with a drawer box, and supporting wheels mounted between the surface rail and the coating shell and used for rolling and supporting the coating shell, wherein a limiting wheel and a side raised line arranged along the length direction of the surface rail are arranged between the surface rail and the inner side surface of the coating shell, and the limiting wheel rolls and abuts against the side raised line to prevent the inner end of the coating shell from tilting; the side convex strips are arranged on the surface rails and the limiting wheels are arranged on the covering shell, or the side convex strips are arranged on the covering shell and the limiting wheels are arranged on the surface rails;

the wrapping shell is provided with a bayonet, the face rail is provided with a synchronous pull buckle corresponding to the bayonet, the synchronous pull buckle is provided with a pull handle which can be partially upwards inserted into the bayonet to enable the wrapping shell and the face rail to synchronously move, and a supporting arm which is partially in sliding butt joint with the bottom rail to enable the pull handle to extend into the bayonet;

the surface rail is provided with a push-pull seat, and the synchronous pull buckle is provided with a connecting arm of which one end is fixedly connected with the pull-push handle; the other end of the connecting arm is hinged with the push-pull seat and is connected with the supporting arm;

the vertical surface where the connecting arm is hinged with the push-pull seat is used as a boundary, the position where the supporting arm is abutted with the bottom rail and the pull-push handle are arranged on the same side, so that when the synchronous pull buckle slides out of the bottom rail, the supporting of the supporting arm by the bottom rail is released, and the pull-push handle is separated from the bayonet under the action of gravity so as to release the synchronous movement;

the inner top surface of the coating shell is provided with a wheel groove for the supporting wheel to roll along the length direction, and the bottom surface of the wheel groove is contacted with the top of the wheel periphery.

2. The fully extended drawer slide of claim 1, wherein: the face rail is provided with a blocking piece fixedly connected to the face rail and protruding out of the periphery of the face rail, and the middle of the wrapping shell is provided with a brake arm corresponding to the blocking piece in position and preventing the wrapping shell from excessively sliding out.

3. The fully extended drawer slide of claim 1, wherein: the wrapping shell is provided with a vertical blocking piece which is suspended and extended to push the surface rail to return.

4. The fully extended drawer slide of claim 1, wherein: the lateral surface of the surface rail is provided with a transverse hourglass-shaped guide groove, and the lateral convex strip is positioned in the guide groove.

5. The fully extended drawer slide of claim 1, wherein: the face rail is equipped with the synchronizing frame, the synchronizing frame is installed synchronous wheelset, and synchronous wheelset is including the interior synchronizing wheel that is located the face rail inboard and the outer synchronizing wheel that is located the face rail outside, and interior synchronizing wheel rotates with outer synchronizing wheel synchronization, gyro wheel sliding support subassembly includes the wheel carrier, the wheel carrier is equipped with and supplies interior synchronizing wheel to roll into and rolling groove, the side gib block is equipped with the resistance face and presses and supports outer synchronizing wheel.

6. The fully extended drawer slide of claim 4, wherein: the limiting wheels are transversely installed in the middle of the face rail, are partially suspended on the side and can be abutted against the inner side face of the cladding shell, so that the cladding shell is prevented from being laterally deviated, and the suspended floating parts of the limiting wheels are located on the upper sides of the side convex strips and can rotate along with the movement of the side convex strips so as to press the side convex strips and prevent the inner end of the cladding shell from tilting.

7. The fully extended drawer slide of claim 1, wherein: the pull handle and the connecting arm form an L-shaped handle body.

8. The fully extended drawer slide of claim 7, wherein: the bracket arm is connected with the connecting arm to form a V-shaped body, so that the synchronous pull buckle is in a bent hook shape or a trident shape.