阅读说明：本技术 一种抽屉及包括其的柜子 (Drawer and cabinet comprising same ) 是由 何铨芳 胡胜从 于 2020-08-25 设计创作，主要内容包括：本发明涉及家具技术领域,公开了一种抽屉,其包括抽屉本体和滑轨组件,抽屉本体通过第一限位件、第二限位件以及锁扣与滑轨组件的上轨相连接,当锁扣转动至上轨的下方时,抽屉本体与上轨被锁扣锁定,二者无法拆分,当锁扣转动至不在上轨的下方时,抽屉本体与上轨不被锁扣锁定,二者能够拆分。基于上述结构,抽屉本体与滑轨组件之间不仅连接牢固,安全可靠,同时拆装方便,有利于生产和检修维护。另外,本发明还公开了一种柜子,由于其采用了上述的抽屉,因而具有生产检修方便、储存量大、噪音小、品质好等优点。(The invention relates to the technical field of furniture and discloses a drawer, which comprises a drawer body and a sliding rail assembly, wherein the drawer body is connected with an upper rail of the sliding rail assembly through a first limiting piece, a second limiting piece and a lock catch. Based on above-mentioned structure, not only firm in connection, safe and reliable, easy dismounting is favorable to production and maintenance simultaneously between drawer body and the slide rail set spare. In addition, the invention also discloses a cabinet, which has the advantages of convenient production and maintenance, large storage capacity, low noise, good quality and the like due to the adoption of the drawer.)

1. A drawer is characterized by comprising a drawer body and a sliding rail assembly arranged at the bottom of the drawer body, wherein the sliding rail assembly comprises an upper rail, a middle rail and a bottom rail which are sequentially arranged from top to bottom;

the drawer comprises an upper rail and a lower rail, and is characterized in that a first limiting part is arranged at the front end of the upper rail, the first limiting part comprises an upwards extending insertion plate part, an insertion hole is formed in the bottom surface of the front end of a drawer body, the insertion plate part is inserted into the insertion hole, a second limiting part is arranged at the rear end of the upper rail, the second limiting part comprises a hook part, a hanging hole is formed in the side surface of the rear end of the drawer body, the hook part extends into the hanging hole, a lock catch rotationally connected with the bottom surface of the front end of the drawer body is further arranged on the bottom surface of the front end of the drawer body, and the;

the upper rail is limited with a first cavity, the upper rail is provided with a first opening communicated with the first cavity, the bottom rail is limited with a second cavity, the bottom rail is provided with a second opening communicated with the second cavity, the first opening and the second opening are oppositely arranged, the middle rail comprises a first bending part, a transition part and a second bending part which are sequentially connected, the first bending part is inserted into the first cavity from the first opening, and the second bending part is inserted into the second cavity from the second opening;

a first support for separating the first bent part and the upper rail is arranged between the first bent part and the upper rail, a first hole position is formed in the first support, a first rolling piece which is in contact with the first bent part and the upper rail is arranged in the first hole position, a second support for separating the first bent part and the lower rail is arranged between the second bent part and the lower rail, a second hole position is formed in the second support, and a second rolling piece which is in contact with the second bent part and the lower rail is arranged in the second hole position;

the first support is provided with a first tooth-shaped edge extending along the length direction of the first support, the second support is provided with a second tooth-shaped edge extending along the length direction of the second support, a gear meshed with the first tooth-shaped edge and the second tooth-shaped edge is arranged between the first tooth-shaped edge and the second tooth-shaped edge, and the gear is connected to the transition part through a rotating shaft.

2. The drawer according to claim 1, wherein the first position limiting member further comprises a first connecting plate portion and a second connecting plate portion, the first connecting plate portion is connected to the upper rail and perpendicular to the top surface of the upper rail, the second connecting plate portion is disposed at the bottom end of the first connecting plate portion and parallel to the top surface of the upper rail, and the insertion plate portion is disposed at one end of the second connecting plate portion away from the first connecting plate portion.

3. The drawer of claim 2, wherein the top end of the insertion plate portion is provided with a first offset portion, the first offset portion and the insertion plate portion define a first included angle α, and the first included angle α is greater than 90 ° < α < 180 °.

4. The drawer according to claim 1, wherein the second position-limiting member further comprises a third connecting plate portion and a fourth connecting plate portion perpendicular to the top surface of the upper rail, the third connecting plate portion is disposed at the bottom end of the fourth connecting plate portion and connected to the upper rail, and the hook portion is disposed at the top end of the fourth connecting plate portion and extends along the length direction of the upper rail.

5. The drawer according to claim 1, wherein the hook portion is provided at a distal end thereof with a second offset portion defining a second included angle β with the hook portion, 90 ° < β < 180 °.

6. The drawer of claim 1, wherein the lock catch comprises a buckle part and a shifting part, the buckle part is used for rotating to the lower part of the upper rail and is rotationally connected with the drawer body through a pin, and the shifting part is arranged on one side edge of the buckle part far away from the upper rail.

7. The drawer of claim 1, wherein the latch is made of plastic or rubber.

8. The drawer according to claim 1, wherein three sets of first rolling units are disposed on the first bracket, the first rolling units are composed of a plurality of first rolling members arranged along a length direction of the first bracket, the three sets of first rolling units are distributed in an inverted delta shape in a transverse direction of the first bracket, two sets of first rolling units are disposed above the first bending portion, and the other set of first rolling units are disposed below the first bending portion;

the second support is provided with three groups of second rolling units, the second rolling units are composed of a plurality of second rolling pieces which are arranged along the length direction of the second support, the three groups of second rolling units are distributed in a vertical triangular shape in the transverse direction of the second support, the two groups of second rolling units are arranged below the second bending part, and the other group of second rolling units is arranged above the second bending part.

9. The drawer according to claim 8, wherein the first bent portion, the transition portion and the second bent portion together define a sliding cavity;

one side of the first bending part, which is back to the sliding cavity, is provided with two first guide grooves extending along the length direction of the first bending part, the two first guide grooves are respectively used for accommodating first rolling pieces of two groups of first rolling units arranged above the first bending part, one side of the first bending part, which faces the sliding cavity, is provided with a first guide groove extending along the length direction of the first bending part, and the first guide groove is used for accommodating first rolling pieces of one group of first rolling units arranged below the first bending part;

and one side of the second bending part facing the sliding cavity is provided with a second guide groove extending along the length direction of the second bending part, the second guide groove and the second bending part are respectively used for accommodating two groups of second rolling pieces of the second rolling units arranged below the second bending part, and one side of the second bending part facing the sliding cavity is provided with a second guide groove extending along the length direction of the second bending part, and the second guide groove is used for accommodating one group of second rolling pieces of the second rolling units arranged above the second bending part.

10. A cabinet comprising a cabinet body and a drawer according to any of claims 1 to 9, wherein the drawer is disposed inside the cabinet body and the bottom rail is fixed to an inner side of the cabinet body.

Technical Field

The invention relates to the technical field of furniture, in particular to a drawer and a cabinet comprising the same.

Background

The drawer is a box for accommodating articles in furniture such as tables and cabinets, and is mounted in the furniture through a slide rail assembly and can be drawn out and pushed in so as to take and place the articles. The existing drawer and the sliding rail assembly are usually connected by screws, and although the firmness is high, the drawer is safe and reliable, the disassembly and the assembly are inconvenient, and the production, the overhaul and the maintenance are not facilitated.

Disclosure of Invention

The invention aims to provide a drawer which is convenient to produce and maintain, large in storage capacity, stable in sliding and smooth in silence.

In order to achieve the purpose, the invention provides a drawer, which comprises a drawer body and a slide rail assembly arranged at the bottom of the drawer body, wherein the slide rail assembly comprises an upper rail, a middle rail and a bottom rail which are sequentially arranged from top to bottom;

the drawer comprises an upper rail and a lower rail, and is characterized in that a first limiting part is arranged at the front end of the upper rail, the first limiting part comprises an upwards extending insertion plate part, an insertion hole is formed in the bottom surface of the front end of a drawer body, the insertion plate part is inserted into the insertion hole, a second limiting part is arranged at the rear end of the upper rail, the second limiting part comprises a hook part, a hanging hole is formed in the side surface of the rear end of the drawer body, the hook part extends into the hanging hole, a lock catch rotationally connected with the bottom surface of the front end of the drawer body is further arranged on the bottom surface of the front end of the drawer body, and the;

the upper rail is limited with a first cavity, the upper rail is provided with a first opening communicated with the first cavity, the bottom rail is limited with a second cavity, the bottom rail is provided with a second opening communicated with the second cavity, the first opening and the second opening are oppositely arranged, the middle rail comprises a first bending part, a transition part and a second bending part which are sequentially connected, the first bending part is inserted into the first cavity from the first opening, and the second bending part is inserted into the second cavity from the second opening;

a first support for separating the first bent part and the upper rail is arranged between the first bent part and the upper rail, a first hole position is formed in the first support, a first rolling piece which is in contact with the first bent part and the upper rail is arranged in the first hole position, a second support for separating the first bent part and the lower rail is arranged between the second bent part and the lower rail, a second hole position is formed in the second support, and a second rolling piece which is in contact with the second bent part and the lower rail is arranged in the second hole position;

the first support is provided with a first tooth-shaped edge extending along the length direction of the first support, the second support is provided with a second tooth-shaped edge extending along the length direction of the second support, a gear meshed with the first tooth-shaped edge and the second tooth-shaped edge is arranged between the first tooth-shaped edge and the second tooth-shaped edge, and the gear is connected to the transition part through a rotating shaft.

In some embodiments of the present application, the first locating part further includes a first connecting plate portion and a second connecting plate portion, the first connecting plate portion is connected with the upper rail and perpendicular to the top surface of the upper rail, the second connecting plate portion is located the bottom of the first connecting plate portion and parallel to the top surface of the upper rail, the insertion plate portion is located the second connecting plate portion is kept away from one end of the first connecting plate portion.

In some embodiments of the present application, a first offset portion is disposed at a top end of the insertion plate portion, and a first included angle α is defined between the first offset portion and the insertion plate portion, where α is greater than 90 ° and less than 180 °.

In some embodiments of the present application, the second locating part further includes a third connecting plate portion and a fourth connecting plate portion perpendicular to the top surface of the upper rail, the third connecting plate portion is located the bottom of the fourth connecting plate portion and is connected with the upper rail, and the hook portion is located the top of the fourth connecting plate portion and follows the length direction of the upper rail extends.

In some embodiments of the present application, a second offset portion is disposed at a distal end of the hook portion, and a second included angle β is defined between the second offset portion and the hook portion, where β is greater than 90 ° and less than 180 °.

In some embodiments of this application, the hasp includes buckle portion and stirring portion, buckle portion be used for rotating extremely the below of going up the rail, it through the pin with the drawer body rotates to be connected, the stirring portion is located buckle portion is kept away from the edge of one side of going up the rail.

In some embodiments of the present application, the lock is made of plastic or rubber.

In some embodiments of the present application, three sets of first rolling units are disposed on the first support, each of the first rolling units is composed of a plurality of first rolling members arranged along a length direction of the first support, and the three sets of first rolling units are distributed in an inverted delta shape in a cross-sectional direction of the first support, wherein two sets of the first rolling units are disposed above the first bending portion, and the other set of the first rolling units is disposed below the first bending portion;

the second support is provided with three groups of second rolling units, the second rolling units are composed of a plurality of second rolling pieces which are arranged along the length direction of the second support, the three groups of second rolling units are distributed in a vertical triangular shape in the transverse direction of the second support, the two groups of second rolling units are arranged below the second bending part, and the other group of second rolling units is arranged above the second bending part.

In some embodiments of the present application, the first bending portion, the transition portion, and the second bending portion together enclose a sliding cavity;

one side of the first bending part, which is back to the sliding cavity, is provided with two first guide grooves extending along the length direction of the first bending part, the two first guide grooves are respectively used for accommodating first rolling pieces of two groups of first rolling units arranged above the first bending part, one side of the first bending part, which faces the sliding cavity, is provided with a first guide groove extending along the length direction of the first bending part, and the first guide groove is used for accommodating first rolling pieces of one group of first rolling units arranged below the first bending part;

and one side of the second bending part facing the sliding cavity is provided with a second guide groove extending along the length direction of the second bending part, the second guide groove and the second bending part are respectively used for accommodating two groups of second rolling pieces of the second rolling units arranged below the second bending part, and one side of the second bending part facing the sliding cavity is provided with a second guide groove extending along the length direction of the second bending part, and the second guide groove is used for accommodating one group of second rolling pieces of the second rolling units arranged above the second bending part.

Another objective of the present invention is to provide a cabinet, which includes a cabinet body and the drawer, wherein the drawer is disposed inside the cabinet body, and the bottom rail is fixed on an inner side surface of the cabinet body.

The invention provides a drawer, compared with the prior art, the drawer has the beneficial effects that:

the drawer body is connected with the upper rail of the sliding rail assembly through the first limiting part, the second limiting part and the lock catch, when the lock catch rotates to the position below the upper rail, the drawer body and the upper rail are locked through the lock catch and cannot be separated, and when the lock catch rotates to a position not below the upper rail, the drawer body and the upper rail are not locked through the lock catch and can be separated; meanwhile, the upper rail is limited with the first cavity, the bottom rail is limited with the second cavity, the first bent part of the middle rail is inserted into the first cavity, and the second bent part of the middle rail is inserted into the second cavity, so that the height of the whole sliding rail assembly is reduced, the occupation of the sliding rail assembly on the space below the drawer body is reduced, the installation space of the drawer body is further increased, the size of the drawer body can be larger, more articles can be stored, and higher storage requirements are met; in addition, because be equipped with between the first profile of tooth limit of first support and the second profile of tooth limit of second support with the gear of the two looks meshing to make upper rail, well rail and bottom rail can link, the slide rail subassembly moves more stably, silence more, more in the same direction as smooth.

In addition, the invention also provides a cabinet, which has the advantages of convenient production and maintenance, large storage capacity, low noise, good quality and the like due to the adoption of the drawer.

Drawings

FIG. 1 is an overall schematic view of a drawer according to an embodiment of the present invention;

FIG. 2 is an overall schematic view of a slide rail assembly according to an embodiment of the invention;

FIG. 3 is a schematic, fragmentary view of a slide rail assembly according to an embodiment of the invention;

FIG. 4 is an enlarged schematic view of region I of FIG. 1;

FIG. 5 is an end view of an upper rail of an embodiment of the present invention;

FIG. 6 is an end view of a bottom rail of an embodiment of the present invention;

FIG. 7 is an end view of a center rail of an embodiment of the present invention;

FIG. 8 is an end view of a slide rail assembly according to an embodiment of the present invention;

FIG. 9 is an assembly schematic of the first bracket, the second bracket, the first roller, the second roller, the gear, and the center rail of an embodiment of the present invention;

FIG. 10 is a schematic structural view of the head end of the headrail according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a first limiting member according to an embodiment of the invention;

FIG. 12 is a schematic view illustrating a structure and an installation of a second position-limiting member according to an embodiment of the invention;

FIG. 13 is a schematic structural view of a latch according to an embodiment of the present invention;

FIG. 14 is a schematic structural view of the rear end of the headrail according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a bottom rail according to an embodiment of the present invention.

In the figure, 100, a slide rail assembly; 1. rail mounting; 101. a first cavity; 102. a first opening; 103. a fifth boss; 2. a middle rail; 201. a first bent portion; 2011. a first guide groove; 2012. a first boss portion; 2013. a second boss portion; 202. a transition section; 203. a second bent portion; 2031. a second guide groove; 2032. a third boss portion; 2033. a fourth boss; 204. a sliding cavity; 3. a bottom rail; 301. a second cavity; 302. a second opening; 303. a sixth boss; 304. a seventh boss; 4. a first limit piece; 401. a board insertion part; 402. a first connecting plate portion; 403. a second web portion; 404. a first deflection portion; 5. a second limiting member; 501. a hook portion; 502. a third connecting plate portion; 503. a fourth web portion; 504. a second deflection portion; 6. a first bracket; 601. a first toothed edge; 7. a first rolling member; 8. a second bracket; 801. a second toothed edge; 9. a second rolling member; 10. a gear; 11. a rotating shaft; 12. adjusting screws; 200. a drawer body; 300. locking; 3001. a buckle part; 3002. a toggle part; 400. a pin; 500. a cabinet body.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

In the description of the present invention, it is to be noted that the terms "connected" and "connected," unless otherwise expressly specified or limited, are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to both elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, the terms of the upper, lower, inner and outer directions in the present application are all described based on the direction in which the drawer is mounted on the cabinet.

As shown in fig. 1 to 3, an embodiment of the present invention provides a drawer, which includes a drawer body 200 and a sliding rail assembly 100 disposed at the bottom of the drawer body 200, wherein the sliding rail assembly 100 includes an upper rail 1, a middle rail 2 and a bottom rail 3, which are sequentially disposed from top to bottom.

Further, a first limiting member 4 is arranged at the front end of the upper rail 1, the first limiting member 4 comprises an inserting plate portion 401 extending upwards, an inserting hole is formed in the bottom surface of the front end of the drawer body 200, and the inserting plate portion 401 is inserted into the inserting hole; a second limiting piece 5 is arranged at the rear end of the upper rail 1, the second limiting piece 5 comprises a hook portion 501, a hanging hole is formed in the side face of the rear end of the drawer body 200, and the hook portion 501 extends into the hanging hole; the bottom surface of the front end of the drawer body 200 is further provided with a lock catch 300 rotatably connected thereto, and the lock catch 300 can be rotated to the lower side of the upper rail 1.

Still further, as shown in fig. 5 to 9, the upper rail 1 defines a first cavity 101, and the upper rail 1 is provided with a first opening 102 communicated with the first cavity 101; the bottom rail 3 is limited with a second cavity 301, and the bottom rail 3 is provided with a second opening 302 communicated with the second cavity 301; the first opening 102 and the second opening 302 are oppositely arranged; the middle rail 2 comprises a first bending part 201, a transition part 202 and a second bending part 203 which are connected in sequence, and a sliding cavity 204 is enclosed by the first bending part 201, the transition part 202 and the second bending part 203; the first bent portion 201 is inserted into the first cavity 101 from the first opening 102, and the second bent portion 203 is inserted into the second cavity 301 from the second opening 302.

Furthermore, a first bracket 6 for separating the first bent part 201 and the upper rail 1 is arranged between the first bent part 201 and the upper rail 1, the first bracket 6 is provided with a first hole position, and a first rolling piece 7 which is contacted with the first bent part 201 and the upper rail 1 is arranged in the first hole position; a second bracket 8 for separating the second bent part 203 from the bottom rail 3 is arranged between the second bent part 203 and the bottom rail 3, a second hole position is arranged on the second bracket 8, and a second rolling piece 9 which is contacted with the second bent part 203 and the bottom rail 3 is arranged in the second hole position; the first bracket 6 is provided with a first toothed edge 601 extending along the length direction thereof, the second bracket 8 is provided with a second toothed edge 801 extending along the length direction thereof, a gear 10 engaged with the first toothed edge 601 and the second toothed edge 801 is arranged between the two toothed edges, and the gear 10 is connected to the transition part 202 through a rotating shaft 11.

Based on the structure, the drawer body 200 is connected with the upper rail 1 of the sliding rail assembly 100 through the first limiting piece 4, the second limiting piece 5 and the lock catch 300, when the lock catch 300 rotates to the position below the upper rail 1, the drawer body 200 and the upper rail 1 are locked by the lock catch 300, the drawer body 200 and the upper rail 1 cannot be separated, and when the lock catch 300 rotates to the position not below the upper rail 1, the drawer body 200 and the upper rail 1 are not locked by the lock catch 300 and can be separated from each other, so that the drawer body 200 and the sliding rail assembly 100 are not only firm in connection, safe and reliable, but also convenient to disassemble and assemble, and beneficial to production, overhaul and maintenance; meanwhile, the upper rail 1 is limited with the first cavity 101, the bottom rail 3 is limited with the second cavity 301, the first bent part 201 of the middle rail 2 is inserted into the first cavity 101, and the second bent part 203 of the middle rail 2 is inserted into the second cavity 301, so that the height of the whole sliding rail assembly 100 is reduced, the occupation of the sliding rail assembly 100 on the space below the drawer body 200 is reduced, the installation space of the drawer body 200 is increased, the size of the drawer body 200 can be larger, more articles can be stored, and higher storage requirements are met; in addition, because the gear 10 meshed with the first toothed edge 601 of the first bracket 6 and the second toothed edge 801 of the second bracket 8 is arranged between the two, the upper rail 1, the middle rail 2 and the bottom rail 3 can be linked, and the sliding rail assembly 100 runs more stably, quietly and smoothly.

Optionally, as shown in fig. 10 and fig. 11, in this embodiment, the first limiting member 4 further includes a first connecting plate portion 402 and a second connecting plate portion 403, the first connecting plate portion 402 is connected to the upper rail 1 and perpendicular to the top surface of the upper rail 1, the second connecting plate portion 403 is disposed at the bottom end of the first connecting plate portion 402 and parallel to the top surface of the upper rail 1, and the inserting plate portion 401 is disposed at one end of the second connecting plate portion 403 away from the first connecting plate portion 402.

Further, in order to increase the connection capability of the first limiting member 4 and prevent the insertion board portion 401 from easily coming off from the insertion hole, the top end of the insertion board portion 401 is provided with a first offset portion 404, a first included angle α is defined between the first offset portion 404 and the insertion board portion 401, and α is greater than 90 ° and less than 180 °.

Optionally, as shown in fig. 12, in this embodiment, the second limiting member 5 further includes a third connecting plate portion 502 and a fourth connecting plate portion 503 perpendicular to the top surface of the upper rail 1, the third connecting plate portion 502 is disposed at the bottom end of the fourth connecting plate portion 503 and connected to the upper rail 1, and the hook portion 501 is disposed at the top end of the fourth connecting plate portion 503 and extends along the length direction of the upper rail 1.

Further, in order to increase the connection capability of the second limiting member 5 and prevent the hook portion 501 from easily coming off from the hanging hole, the end of the hook portion 501 is provided with a second offset portion 504, a second included angle β is defined between the second offset portion 504 and the hook portion 501, and β is greater than 90 ° and less than 180 °.

Alternatively, as shown in fig. 4 and 13, in the present embodiment, the lock catch 300 includes a buckle portion 3001 and a toggle portion 3002, the buckle portion 3001 is used for rotating to the lower side of the upper rail 1, and is rotatably connected with the drawer body 200 through a pin 400; the toggle portion 3002 is disposed on an edge of the buckle portion 3001 away from the upper rail 1, so that an operator can toggle the buckle 300 with fingers.

Optionally, in this embodiment, the material of the lock catch 300 is preferably plastic or rubber with small hardness and strong deformability, so that on one hand, the impact damage to the drawer body 200 can be reduced, on the other hand, the noise can be reduced, and the quality of the drawer can be improved.

Optionally, as shown in fig. 8, in this embodiment, three groups of first rolling units are disposed on the first support 6, and each first rolling unit is composed of a plurality of first rolling members 7 arranged along the length direction of the first support 6; the three sets of first rolling units are distributed in an inverted triangle shape in the transverse direction of the first bracket 6, wherein the two sets of first rolling units are arranged above the first bending portion 201, and the other set of first rolling units are arranged below the first bending portion 201. Similarly, three groups of second rolling units are arranged on the second support 8, and each second rolling unit consists of a plurality of second rolling pieces 9 arranged along the length direction of the second support 8; the three sets of second rolling units are distributed in a vertical delta shape in the transverse direction of the second bracket 8, wherein the two sets of second rolling units are arranged below the second bending portion 203, and the other set of second rolling units are arranged above the second bending portion 203. Therefore, the first rolling unit and the second rolling unit which are distributed in a triangular shape can enable the sliding rail assembly 100 to be stressed uniformly, so that the working condition of the sliding rail assembly 100 is improved, the service life of the sliding rail assembly 100 is prolonged, and meanwhile, the stability of the sliding rail assembly 100 during operation is also improved.

Optionally, as shown in fig. 7 and fig. 8, in this embodiment, in order to further improve the stability of the sliding rail assembly 100 during operation, two first guide grooves extending along the length direction are disposed on a side of the first bending portion 201 away from the sliding cavity 204, and are respectively used for accommodating the first rolling members 7 of the two sets of first rolling units disposed above the first bending portion 201; one side of the first bending portion 201 facing the sliding cavity 204 is provided with a first guiding groove extending along the length direction thereof, and the first guiding groove is used for accommodating the first rolling members 7 of the group of first rolling units arranged below the first bending portion 201. One side of the second bending portion 203, which faces away from the sliding cavity 204, is provided with two second guide grooves extending along the length direction thereof, where the two second guide grooves are respectively used for accommodating the second rolling elements 9 of the two sets of second rolling units disposed below the second bending portion 203, and one side of the second bending portion 203, which faces the sliding cavity 204, is provided with one second guide groove extending along the length direction thereof, and the second guide groove is used for accommodating the second rolling elements 9 of the one set of second rolling units disposed above the second bending portion 203.

Alternatively, in this embodiment, the first rolling member 7 and the second rolling member 9 are preferably steel balls with good rolling performance and high bearing capacity, and of course, in other embodiments, the steel balls may be replaced by cylindrical steel columns or other rollable parts.

Optionally, as shown in fig. 9, in the present embodiment, two ends of the first bent portion 201 respectively have a first protruding portion 2012 and a second protruding portion 2013 protruding away from the sliding cavity 204, and the first bracket 6 is limited between the first protruding portion 2012 and the second protruding portion 2013. Both ends of the second bent portion 203 have a third protrusion 2032 and a fourth protrusion 2033 protruding away from the sliding cavity 204, respectively, and the second bracket 8 is confined between the third protrusion 2032 and the fourth protrusion 2033. Therefore, the first bracket 6 and the second bracket 8 cannot fall off from the middle rail 2, and the reliability of the sliding rail assembly 100 is improved.

Alternatively, as shown in fig. 10, 14 and 15, in the present embodiment, the rear end of the upper rail 1 has a fifth boss 103 protruding toward the first cavity 101, the front end of the upper rail 1 is provided with an adjusting screw 12 capable of moving up and down, and the first bracket 6 is limited between the fifth boss 103 and the adjusting screw 12. Both ends of the bottom rail 3 have a sixth boss 303 and a seventh boss 304, respectively, which protrude toward the second cavity 301, and the second bracket 8 is confined between the sixth boss 303 and the seventh boss 304. Therefore, the first bracket 6 cannot slide out of the first cavity 101, and the second bracket 8 cannot slide out of the second cavity 301, so that the reliability of the slide rail assembly 100 is further improved; in addition, the adjusting screw 12 can also be used to adjust the installation height of the drawer body 200.

To sum up, the embodiment of the present invention provides a drawer, which includes a drawer body 200 and a sliding rail assembly 100 disposed at the bottom of the drawer body 200, wherein the sliding rail assembly 100 includes an upper rail 1, a middle rail 2 and a bottom rail 3, which are sequentially disposed from top to bottom. Compared with the prior art, the drawer has the following beneficial effects:

1. the drawer body 200 and the sliding rail assembly 100 are firmly connected, safe and reliable, and are convenient to disassemble and assemble, so that the production, the overhaul and the maintenance are facilitated;

2. the height of the sliding rail assembly 100 is low, so that the occupation of the space below the drawer body 200 is reduced, the installation space of the drawer body 200 is increased, the size of the drawer body 200 can be larger, more articles can be stored, and higher storage requirements are met;

3. the upper rail 1, the middle rail 2 and the bottom rail 3 can be linked, so that the sliding rail assembly 100 runs more stably, quietly and smoothly;

4. the slide rail assembly 100 has the advantages of uniform stress, long service life, good stability during operation and high reliability.

In addition, as shown in fig. 1, an embodiment of the present invention further provides a cabinet, which includes a cabinet body 500 and the drawer, where the drawer is disposed inside the cabinet body 500, and the bottom rail 3 of the sliding rail assembly 100 is fixed to an inner side surface of the cabinet body 500. Compared with the prior art, the cabinet has the advantages of convenient production and maintenance, large storage capacity, low noise, good quality and the like.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.