A drawer and a cabinet comprising the same

Abstract

The present application relates to the technical field of furniture, and discloses a drawer, which comprises a drawer body and a slide rail assembly, the drawer body is connected with an upper rail of the slide rail assembly through a first limiting piece, a second limiting piece and a lock catch, when the lock catch is rotated to below the upper rail, the drawer body and the upper rail are locked by the lock catch and cannot be separated, when the lock catch is rotated to not below the upper rail, the drawer body and the upper rail are not locked by the lock catch and can be separated. Based on the above structure, the connection between the drawer body and the slide rail assembly is not only firm, safe and reliable, but also convenient to disassemble and assemble, which is beneficial to production and maintenance. In addition, the present application also discloses a cabinet, since the cabinet adopts the above-mentioned drawer, the cabinet has the advantages of convenient production and maintenance, large storage capacity, small noise and good quality.

Description

Technical Field

[0001] This invention relates to the field of furniture technology, and in particular to a drawer and a cabinet including the same. Background Technology

[0002] A drawer is a storage compartment in furniture such as a table or cabinet. It is installed inside the furniture via a sliding rail assembly and can be pulled out and pushed in to retrieve items. Current drawers and sliding rail assemblies are typically connected using screws, which, while sturdy and reliable, are inconvenient to disassemble and assemble, hindering production and maintenance. Summary of the Invention

[0003] The purpose of this invention is to provide a drawer that is convenient for production and maintenance, has a large storage capacity, slides stably, and is quiet and smooth.

[0004] To achieve the above objectives, the present invention provides a drawer, which includes a drawer body and a slide rail assembly disposed at the bottom of the drawer body, the slide rail assembly including an upper rail, a middle rail and a bottom rail arranged sequentially from top to bottom;

[0005] The front end of the upper rail is provided with a first limiting member, which includes an upwardly extending insert plate. The bottom surface of the front end of the drawer body is provided with an insertion hole, into which the insert plate is inserted. The rear end of the upper rail is provided with a second limiting member, which includes a hook. The side of the rear end of the drawer body is provided with a hanging hole, into which the hook extends. The bottom surface of the front end of the drawer body is also provided with a latch that is rotatably connected to it. The latch can be rotated to below the upper rail.

[0006] The upper rail defines a first cavity and has a first opening that communicates with the first cavity. The bottom rail defines a second cavity and has a second opening that communicates with the second cavity. The first opening and the second opening are arranged opposite to each other. The middle rail includes a first bent portion, a transition portion and a second bent portion connected in sequence. The first bent portion is inserted into the first cavity from the first opening and the second bent portion is inserted into the second cavity from the second opening.

[0007] A first bracket is provided between the first bent portion and the upper rail to separate the two. The first bracket has a first hole, and a first rolling element that contacts the first bent portion and the upper rail is provided in the first hole. A second bracket is provided between the second bent portion and the bottom rail to separate the two. The second bracket has a second hole, and a second rolling element that contacts the second bent portion and the bottom rail is provided in the second hole.

[0008] The first bracket has a first toothed edge extending along its length direction, and the second bracket has a second toothed edge extending along its length direction. A gear is provided between the first toothed edge and the second toothed edge to mesh with both of them, and the gear is connected to the transition portion via a rotating shaft.

[0009] In some embodiments of this application, the first limiting member further includes a first connecting plate portion and a second connecting plate portion. The first connecting plate portion is connected to the upper rail and is 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 is parallel to the top surface of the upper rail. The insert plate portion is disposed at the end of the second connecting plate portion away from the first connecting plate portion.

[0010] In some embodiments of this application, the top end of the insert plate portion is provided with a first deflection portion, and a first included angle α is defined between the first deflection portion and the insert plate portion, where 90° < α < 180°.

[0011] In some embodiments of this application, the second limiting member 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 disposed at the bottom end of the fourth connecting plate portion and connected to the upper rail. 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.

[0012] In some embodiments of this application, the end of the hook is provided with a second deflection portion, and a second included angle β is defined between the second deflection portion and the hook portion, where 90° < β < 180°.

[0013] In some embodiments of this application, the latch includes a latch plate and a lever portion. The latch plate is used to rotate to the underside of the upper rail and is rotatably connected to the drawer body by a pin. The lever portion is located on the edge of the latch plate away from the upper rail.

[0014] In some embodiments of this application, the latch is made of plastic or rubber.

[0015] In some embodiments of this application, the first support is provided with three sets of first rolling units. The first rolling unit is composed of several first rolling elements arranged along the length direction of the first support. The three sets of first rolling units are distributed in an inverted triangular shape in the cross-sectional direction of the first support. Two sets of first rolling units are located above the first bend, and the other set of first rolling units is located below the first bend.

[0016] The second support is provided with three sets of second rolling units. The second rolling unit is composed of several second rolling elements arranged along the length direction of the second support. The three sets of second rolling units are arranged in an upright triangular shape in the cross-sectional direction of the second support. Two sets of second rolling units are located below the second bend, and the other set of second rolling units is located above the second bend.

[0017] In some embodiments of this application, the first bend, the transition portion, and the second bend together form a sliding cavity;

[0018] The first bend has two first guide grooves extending along its length on the side facing away from the sliding cavity. The two guide grooves are used to accommodate the first rolling elements of the two sets of the first rolling units located above the first bend. The first bend has a first guide groove extending along its length on the side facing the sliding cavity. This groove is used to accommodate the first rolling elements of the set of the first rolling units located below the first bend.

[0019] The second bend has two second guide grooves extending along its length on the side facing away from the sliding cavity. These two grooves are used to accommodate the second rolling elements of the two sets of the second rolling units located below the second bend. The second bend has a second guide groove extending along its length on the side facing the sliding cavity. This groove is used to accommodate the second rolling elements of the set of the second rolling units located above the second bend.

[0020] Another object of the present invention is to provide a cabinet comprising a cabinet body and the aforementioned drawer, wherein the drawer is disposed inside the cabinet body and the bottom rail is fixed to the inner side of the cabinet body.

[0021] This invention provides a drawer, which has the following advantages compared with the prior art:

[0022] The drawer body is connected to the upper rail of the slide rail assembly via a first limiting member, a second limiting member, and a latch. When the latch rotates to below the upper rail, the drawer body and the upper rail are locked together and cannot be separated. When the latch rotates to a position not below the upper rail, the drawer body and the upper rail are not locked together and can be separated. Therefore, the connection between the drawer body and the slide rail assembly is not only secure and reliable but also easy to assemble and disassemble, facilitating production and maintenance. Simultaneously, because the upper rail defines a first cavity and the bottom rail defines a second cavity, the first bend of the middle rail inserts into the... Within the first cavity, the second bend of the middle rail is inserted into the second cavity, thereby reducing the overall height of the slide rail assembly and minimizing its impact on the space beneath the drawer body. This increases the installation space for the drawer body, allowing for a larger drawer size and the storage of more items to meet higher storage requirements. Furthermore, the presence of gears meshing between the first toothed edge of the first bracket and the second toothed edge of the second bracket enables the upper, middle, and bottom rails to move in tandem, resulting in a more stable, quieter, and smoother operation of the slide rail assembly.

[0023] In addition, the present invention also provides a cabinet that, due to the use of the above-mentioned drawers, has the advantages of convenient production and maintenance, large storage capacity, low noise, and high quality. Attached Figure Description

[0024] Figure 1 This is an overall schematic diagram of the drawer according to an embodiment of the present invention;

[0025] Figure 2 This is an overall schematic diagram of the slide rail assembly according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the slide rail assembly according to an embodiment of the present invention;

[0027] Figure 4 yes Figure 1 Enlarged schematic diagram of region I in the middle;

[0028] Figure 5 This is a schematic diagram of the end face of the upper rail according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the end face of the bottom rail according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the end face of the middle rail in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the end face of the slide rail assembly according to an embodiment of the present invention;

[0032] Figure 9This is an assembly diagram of the first bracket, the second bracket, the first rolling element, the second rolling element, the gear, and the middle rail according to an embodiment of the present invention.

[0033] Figure 10 This is a schematic diagram of the structure of the upper rail front end in an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of the structure of the first limiting member according to an embodiment of the present invention;

[0035] Figure 12 This is a schematic diagram of the structure and installation of the second limiting member according to an embodiment of the present invention;

[0036] Figure 13 This is a schematic diagram of the latch structure according to an embodiment of the present invention;

[0037] Figure 14 This is a schematic diagram of the structure of the rear end of the upper rail according to an embodiment of the present invention;

[0038] Figure 15 This is a schematic diagram of the bottom rail structure according to an embodiment of the present invention.

[0039] In the diagram, 100 is the slide rail assembly; 1 is the upper rail; 101 is the first cavity; 102 is the first opening; 103 is the fifth protrusion; 2 is the middle rail; 201 is the first bend; 2011 is the first guide groove; 2012 is the first protrusion; 2013 is the second protrusion; 202 is the transition section; 203 is the second bend; 2031 is the second guide groove; 2032 is the third protrusion; 2033 is the fourth protrusion; 204 is the sliding cavity; 3 is the bottom rail; 301 is the second cavity; 302 is the second opening; 303 is the sixth protrusion; 304 is the seventh protrusion; 4 is the first limiting member; 40 is the bottom rail. 1. Insert plate; 402. First connecting plate; 403. Second connecting plate; 404. First deflection part; 5. Second limiting member; 501. Hook; 502. Third connecting plate; 503. Fourth connecting plate; 504. Second deflection part; 6. First bracket; 601. First toothed edge; 7. First rolling element; 8. Second bracket; 801. Second toothed edge; 9. Second rolling element; 10. Gear; 11. Rotating shaft; 12. Adjusting screw; 200. Drawer body; 300. Lock; 3001. Snap plate; 3002. Actuating part; 400. Pin; 500. Cabinet body. Detailed Implementation

[0040] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] It should be understood that the terms "first," "second," etc., are used in this invention to describe various types of information, but these terms are not limited to them; they are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the directional terms such as "upper," "lower," "inner," and "outer" in this application are all descriptions based on the orientation of the drawer installed on the cabinet.

[0043] like Figures 1 to 3 As shown, an embodiment of the present invention provides a drawer, which includes a drawer body 200 and a slide rail assembly 100 disposed at the bottom of the drawer body 200. The slide rail assembly 100 includes an upper rail 1, a middle rail 2 and a bottom rail 3 arranged sequentially from top to bottom.

[0044] Furthermore, the front end of the upper rail 1 is provided with a first limiting member 4, which includes an upwardly extending insert plate 401. The bottom surface of the front end of the drawer body 200 is provided with an insertion hole, and the insert plate 401 is inserted into the insertion hole. The rear end of the upper rail 1 is provided with a second limiting member 5, which includes a hook 501. The side of the rear end of the drawer body 200 is provided with a hanging hole, and the hook 501 extends into the hanging hole. The bottom surface of the front end of the drawer body 200 is also provided with a latch 300 that is rotatably connected to it. The latch 300 can be rotated to the bottom of the upper rail 1.

[0045] Furthermore, such as Figures 5 to 9As shown, the upper rail 1 defines a first cavity 101, and the upper rail 1 has a first opening 102 that communicates with the first cavity 101; the bottom rail 3 defines a second cavity 301, and the bottom rail 3 has a second opening 302 that communicates with the second cavity 301; the first opening 102 and the second opening 302 are arranged opposite to each other; the middle rail 2 includes a first bent portion 201, a transition portion 202 and a second bent portion 203 connected in sequence, which together form a sliding cavity 204; 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.

[0046] Furthermore, a first bracket 6 is provided between the first bent portion 201 and the upper rail 1 to separate the two. The first bracket 6 has a first hole, and a first rolling element 7 that contacts the first bent portion 201 and the upper rail 1 is provided in the first hole. A second bracket 8 is provided between the second bent portion 203 and the bottom rail 3 to separate the two. The second bracket 8 has a second hole, and a second rolling element 9 that contacts the second bent portion 203 and the bottom rail 3 is provided in the second hole. The first bracket 6 has a first toothed edge 601 extending along its length direction, and the second bracket 8 has a second toothed edge 801 extending along its length direction. A gear 10 that meshes with the first toothed edge 601 and the second toothed edge 801 is provided between the two. The gear 10 is connected to the transition portion 202 through a rotating shaft 11.

[0047] Based on the above structure, the drawer body 200 is connected to the upper rail 1 of the slide rail assembly 100 via the first limiting member 4, the second limiting member 5, and the latch 300. When the latch 300 rotates to below the upper rail 1, the drawer body 200 and the upper rail 1 are locked by the latch 300 and cannot be separated. When the latch 300 rotates to a position not below the upper rail 1, the drawer body 200 and the upper rail 1 are not locked by the latch 300 and can be separated. Therefore, the connection between the drawer body 200 and the slide rail assembly 100 is not only firm and reliable, but also easy to assemble and disassemble, which is beneficial for production and maintenance. Meanwhile, since the upper rail 1 defines the first cavity 101, the bottom rail 3 defines the second cavity 301, and the middle rail 2 defines the first cavity 101... The bent portion 201 is inserted into the first cavity 101, and the second bent portion 203 of the middle rail 2 is inserted into the second cavity 301, thereby reducing the height of the entire slide rail assembly 100 and reducing the space occupied by the slide rail assembly 100 under the drawer body 200. This increases the installation space of the drawer body 200, allowing the drawer body 200 to be larger and able to store more items, meeting higher storage requirements. In addition, since a gear 10 is provided between the first toothed edge 601 of the first bracket 6 and the second toothed edge 801 of the second bracket 8, the upper rail 1, the middle rail 2, and the bottom rail 3 can be linked, making the slide rail assembly 100 run more stably, quietly, and smoothly.

[0048] Optional, such as Figure 10 and Figure 11 As shown, 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 is 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 is parallel to the top surface of the upper rail 1. The insert plate portion 401 is disposed at the end of the second connecting plate portion 403 away from the first connecting plate portion 402.

[0049] Furthermore, in order to increase the connection capability of the first limiting member 4 and prevent the insert plate part 401 from easily coming out of the insertion hole, the top end of the insert plate part 401 is provided with a first deflection part 404, and a first included angle α is defined between the first deflection part 404 and the insert plate part 401, 90°<α<180°.

[0050] Optional, such as Figure 12 As shown, in this embodiment, the second limiting member 5 also includes a third connecting plate portion 502 and a fourth connecting plate portion 503 that are 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. 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.

[0051] Furthermore, in order to increase the connection capability of the second limiting member 5 and prevent the hook 501 from easily coming out of the hanging hole, the end of the hook 501 is provided with a second deflection portion 504, and a second included angle β is defined between the second deflection portion 504 and the hook 501, 90°<β<180°.

[0052] Optional, such as Figure 4 and Figure 13 As shown, in this embodiment, the latch 300 includes a latch plate 3001 and a toggle part 3002. The latch plate 3001 is used to rotate to the lower part of the upper rail 1 and is rotatably connected to the drawer body 200 by a pin 400. The toggle part 3002 is located on the edge of the latch plate 3001 away from the upper rail 1, so that the operator can toggle the latch 300 with their fingers.

[0053] Optionally, in this embodiment, the material of the latch 300 is preferably plastic or rubber with low hardness and strong deformation ability. On the one hand, it can reduce the impact damage to the drawer body 200, and on the other hand, it can reduce noise and improve the quality of the drawer.

[0054] Optional, such as Figure 8As shown, in this embodiment, the first support 6 is provided with three sets of first rolling units, each consisting of several first rolling elements 7 arranged along the length of the first support 6. The three sets of first rolling units are arranged in an inverted triangular shape in the transverse direction of the first support 6, with two sets of first rolling units located above the first bend 201 and the other set located below the first bend 201. Similarly, the second support 8 is provided with three sets of second rolling units, each consisting of several second rolling elements 9 arranged along the length of the second support 8. The three sets of second rolling units are arranged in an upright triangular shape in the transverse direction of the second support 8, with two sets of second rolling units located below the second bend 203 and the other set located above the second bend 203. Thus, the triangular arrangement of the first and second rolling units ensures that the slide rail assembly 100 is subjected to uniform force, thereby improving the working condition of the slide rail assembly 100, extending its service life, and also improving the stability of the slide rail assembly 100 during operation.

[0055] Optional, such as Figure 7 and Figure 8 As shown, in this embodiment, to further improve the stability of the slide rail assembly 100 during operation, the first bending portion 201 has two first guide grooves extending along its length on the side facing away from the sliding cavity 204. These two grooves are used to accommodate the first rolling elements 7 of the two sets of first rolling units disposed above the first bending portion 201. The first bending portion 201 has one first guide groove extending along its length on the side facing the sliding cavity 204, which is used to accommodate the first rolling elements 7 of the set of first rolling units disposed below the first bending portion 201. The second bending portion 203 has two second guide grooves extending along its length on the side facing away from the sliding cavity 204. These two grooves are used to accommodate the second rolling elements 9 of the two sets of second rolling units disposed below the second bending portion 203. The second bending portion 203 has one second guide groove extending along its length on the side facing the sliding cavity 204, which is used to accommodate the second rolling elements 9 of the set of second rolling units disposed above the second bending portion 203.

[0056] Optionally, in this embodiment, the first rolling element 7 and the second rolling element 9 are preferably steel balls with good rolling performance and high load-bearing capacity. Of course, in other embodiments, the steel balls can be replaced by cylindrical steel columns or other rolling parts.

[0057] Optional, such as Figure 9As shown, in this embodiment, the first bending portion 201 has a first protrusion 2012 and a second protrusion 2013 protruding away from the sliding cavity 204 at both ends, and the first bracket 6 is constrained between the first protrusion 2012 and the second protrusion 2013. The second bending portion 203 has a third protrusion 2032 and a fourth protrusion 2033 protruding away from the sliding cavity 204 at both ends, and the second bracket 8 is constrained between the third protrusion 2032 and the fourth protrusion 2033. In this way, the first bracket 6 and the second bracket 8 will not fall off the middle rail 2, improving the reliability of the slide rail assembly 100.

[0058] Optional, such as Figure 10 , Figure 14 as well as Figure 15 As shown, in this embodiment, the rear end of the upper rail 1 has a fifth protrusion 103 protruding towards the first cavity 101, and the front end of the upper rail 1 is provided with an adjusting screw 12 that can move up and down. The first bracket 6 is constrained between the fifth protrusion 103 and the adjusting screw 12. The two ends of the bottom rail 3 have a sixth protrusion 303 and a seventh protrusion 304 protruding towards the second cavity 301, respectively, and the second bracket 8 is constrained between the sixth protrusion 303 and the seventh protrusion 304. In this way, the first bracket 6 will not slide out of the first cavity 101, and the second bracket 8 will not slide out of the second cavity 301, further improving the reliability of the slide rail assembly 100; in addition, the adjusting screw 12 can also be used to adjust the installation height of the drawer body 200.

[0059] In summary, the embodiments of the present invention provide a drawer, which includes a drawer body 200 and a slide rail assembly 100 disposed at the bottom of the drawer body 200. The slide rail assembly 100 includes an upper rail 1, a middle rail 2, and a bottom rail 3 arranged sequentially from top to bottom. Compared with the prior art, this drawer has the following beneficial effects:

[0060] 1. The connection between the drawer body 200 and the slide rail assembly 100 is not only firm and safe, but also easy to disassemble and assemble, which is beneficial to production and maintenance.

[0061] 2. The low height of the slide rail assembly 100 reduces the space occupied under the drawer body 200, increases the installation space of the drawer body 200, and allows the drawer body 200 to be larger, storing more items and meeting higher storage requirements.

[0062] 3. The upper rail 1, middle rail 2 and bottom rail 3 can be linked together, making the slide rail assembly 100 run more stably, quietly and smoothly;

[0063] 4. The slide rail assembly has uniform force distribution, long service life, good stability during operation, and high reliability.

[0064] In addition, such as Figure 1 As shown, this embodiment of the invention also provides a cabinet, which includes a cabinet body 500 and the aforementioned drawers. The drawers are disposed inside the cabinet body 500, and the bottom rail 3 of the slide rail assembly 100 is fixed to the inner side of the cabinet body 500. Compared with the prior art, this cabinet has advantages such as convenient production and maintenance, large storage capacity, low noise, and high quality.

[0065] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0066] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A drawer, characterized in that, The drawer includes a drawer body and a slide rail assembly located at the bottom of the drawer body. The slide rail assembly includes an upper rail, a middle rail, and a bottom rail arranged sequentially from top to bottom. The front end of the upper rail is provided with a first limiting member, which includes an upwardly extending insert portion, a first connecting plate portion, and a second connecting plate portion. The first connecting plate portion is connected to the upper rail and is perpendicular to the top surface of the upper rail. The second connecting plate portion is located at the bottom end of the first connecting plate portion and is parallel to the top surface of the upper rail. The insert portion is located at the end of the second connecting plate portion away from the first connecting plate portion. The bottom surface of the front end of the drawer body is provided with an insertion hole, into which the insert portion is inserted. The rear end of the upper rail is provided with... The second limiting member includes a hook portion, and also 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 at the bottom end of the fourth connecting plate portion and is connected to the upper rail. The hook portion is located at the top end of the fourth connecting plate portion and extends along the length direction of the upper rail. The side of the rear end of the drawer body is provided with a hanging hole, and the hook portion extends into the hanging hole. The bottom surface of the front end of the drawer body is also provided with a latch that is rotatably connected to it. The latch can be rotated to below the upper rail. The upper rail defines a first cavity and has a first opening that communicates with the first cavity. The bottom rail defines a second cavity and has a second opening that communicates with the second cavity. The first opening and the second opening are arranged opposite to each other. The middle rail includes a first bent portion, a transition portion and a second bent portion connected in sequence. The first bent portion is inserted into the first cavity from the first opening and the second bent portion is inserted into the second cavity from the second opening. A first bracket is provided between the first bent portion and the upper rail to separate the two. The first bracket has a first hole, and a first rolling element that contacts the first bent portion and the upper rail is provided in the first hole. A second bracket is provided between the second bent portion and the bottom rail to separate the two. The second bracket has a second hole, and a second rolling element that contacts the second bent portion and the bottom rail is provided in the second hole. The first bracket has a first toothed edge extending along its length direction, and the second bracket has a second toothed edge extending along its length direction. A gear is provided between the first toothed edge and the second toothed edge to mesh with both of them. The gear is connected to the transition portion via a rotating shaft. The first bend, the transition section, and the second bend together form a sliding cavity; The first bent portion has a first protrusion and a second protrusion protruding away from the sliding cavity at both ends, and the first bracket is constrained between the first protrusion and the second protrusion. The second bent portion has a third protrusion and a fourth protrusion protruding away from the sliding cavity at both ends, and the second bracket is constrained between the third protrusion and the fourth protrusion. The upper rail has a fifth protrusion at its rear end that protrudes toward the first cavity, and an adjusting screw at its front end. The first bracket is constrained between the fifth protrusion and the adjusting screw. The bottom rail has a sixth protrusion and a seventh protrusion at its two ends that protrude toward the second cavity, and the second bracket is constrained between the sixth protrusion and the seventh protrusion.

2. The drawer according to claim 1, characterized in that, The top of the insert plate is provided with a first deflection portion, and a first included angle α is defined between the first deflection portion and the insert plate, where 90° < α < 180°.

3. The drawer according to claim 1, characterized in that, The end of the hook is provided with a second deflection portion, and a second included angle β is defined between the second deflection portion and the hook portion, where 90° < β < 180°.

4. The drawer according to claim 1, characterized in that, The latch includes a latch plate and a lever. The latch plate is used to rotate to the underside of the upper rail and is rotatably connected to the drawer body by a pin. The lever is located on the edge of the latch plate away from the upper rail.

5. The drawer according to claim 1, characterized in that, The latch is made of plastic or rubber.

6. The drawer according to claim 1, characterized in that, The first support is provided with three sets of first rolling units. Each first rolling unit is composed of several first rolling elements arranged along the length of the first support. The three sets of first rolling units are arranged in an inverted triangular shape in the cross-sectional direction of the first support. Two sets of first rolling units are located above the first bend, and the other set of first rolling units is located below the first bend. The second support is provided with three sets of second rolling units. The second rolling unit is composed of several second rolling elements arranged along the length direction of the second support. The three sets of second rolling units are arranged in an upright triangular shape in the cross-sectional direction of the second support. Two sets of second rolling units are located below the second bend, and the other set of second rolling units is located above the second bend.

7. The drawer according to claim 6, characterized in that, The first bend has two first guide grooves extending along its length on the side facing away from the sliding cavity. The two guide grooves are used to accommodate the first rolling elements of the two sets of the first rolling units located above the first bend. The first bend has a first guide groove extending along its length on the side facing the sliding cavity. This groove is used to accommodate the first rolling elements of the set of the first rolling units located below the first bend. The second bend has two second guide grooves extending along its length on the side facing away from the sliding cavity. These two grooves are used to accommodate the second rolling elements of the two sets of the second rolling units located below the second bend. The second bend has a second guide groove extending along its length on the side facing the sliding cavity. This groove is used to accommodate the second rolling elements of the set of the second rolling units located above the second bend.

8. A cabinet, characterized in that, The cabinet includes a cabinet body and a drawer as described in any one of claims 1-7, wherein the drawer is disposed inside the cabinet body and the bottom rail is fixed to the inner side of the cabinet body.

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