An integrated and optimized drawer adjustment structure

Abstract

An integrated and optimized drawer adjustment structure includes a movable slide and a side panel. The side panel is made of a metal material and is provided with a flat side surface. The side surface extends downward and is integrally bent or separately provided with a support portion. A front connection device is provided below the support portion. The front connection device includes a bracket. The bracket is located below the support portion and is provided with a front buckle and an up and down adjustment component. A notch portion is provided at the front of the movable slide, and its front end abuts against the bracket. The front buckle is elastically movable on the bracket, and is mutually buckled or separated with the notch portion when elastically movable, so as to realize a detachable mating connection between the movable slide and the side panel. The up and down adjustment component is movably arranged on the bracket, and drives the side panel to move up and down relative to the movable slide when movable, so as to realize the up and down position adjustment between the movable slide and the side panel. The present invention has strong practicality through the improvement of the above structure.

Description

Technical Field

[0001] The invention relates to an integrated and optimized drawer adjustment structure. Background Art

[0002] Chinese patent document No. CN103479101A discloses a drawer side panel structure, which includes a side panel, a bottom panel and a slide rail assembly for opening and closing the drawer. The side panel is provided with a front connecting piece connected to the front panel and a rear connecting piece connected to the back panel. The side panel is formed of metal in one piece or at least two metal profiles are separately arranged and then fixed together to form a cavity inside. The front connecting piece and / or the rear connecting piece are fixedly arranged in the cavity; a fixing part is laterally arranged inwardly of the side panel, and the bottom panel is arranged on the fixing part, and acts on the movable slide rail of the slide rail assembly through the fixing part at least when the drawer is in a loaded state. It is said that the side panels of the above structure are at least composed of two steel profiles, the side panel shell and the supporting upper rail. The thickness of the side panel shell is less than the width of the movable slide rail, and the inner wall is at least partially vertical, and at least one bending portion is arranged outward to connect with the supporting upper rail; the supporting upper rail is laterally arranged inwardly with a fixing portion, and the bottom plate is arranged on the fixing portion, which effectively reduces the length of the bottom plate, thereby reducing the production cost; however, in order to enable the side panels to be connected to the front panel and the back panel respectively, a cavity is formed inside the side panel shell, and then a front connecting member and a rear connecting member connected to the front panel and the back panel are arranged in the cavity respectively. The arrangement of the cavity will increase the volume of the side panel, resulting in less internal storage space of the drawer, affecting the user's storage of objects, and at the same time, the upper and lower positions of the drawer cannot be adjusted, which cannot meet the user's usage needs. Therefore, it is necessary to make further improvements. Summary of the invention

[0003] The purpose of the present invention is to provide an integrated and optimized drawer adjustment structure to overcome the shortcomings of the prior art, such as large side panels, small drawer storage space, and inability to adjust the upper and lower positions of the drawers.

[0004] An integrated and optimized drawer adjustment structure designed for this purpose includes a movable slide rail and a side panel, characterized in that: the side panel is made of a metal material and is provided with a planar side portion, the side portion extends downward, and is integrally bent or separately provided with a supporting portion, a front connecting device is provided below the supporting portion, the front connecting device includes a bracket, the bracket is located below the supporting portion, and is provided with a front buckle and an up and down adjustment component; a notch portion is provided at the front portion of the movable slide rail, and its front end abuts against the bracket; the front buckle component is elastically movable on the bracket, and is mutually buckled or separated from the notch portion when elastically movable, so as to realize a detachable and mating connection between the movable slide rail and the side panel; the up and down adjustment component is movably arranged on the bracket, and drives the side panel to move up and down relative to the movable slide rail when moving, so as to realize the up and down position adjustment between the movable slide rail and the side panel.

[0005] The inner side of the supporting part is bent downward as a whole or separately to form a supporting part, and a notch is formed between the outer side of the supporting part and the bottom and / or outer side of the supporting part; the bracket is fixedly arranged on the notch, and a built-in groove is arranged on the bracket or between the bracket and the supporting part; the movable slide rail rests on the inner side of the supporting part, and its front end is located in the built-in groove and abuts against the bracket.

[0006] The bracket is provided with an extension portion toward the rear end of the movable slide rail, the extension portion is located outside the notch, and an internal groove is provided between the extension portion and the supporting portion, and an elastic soft plastic portion is also provided at the end of the internal groove; the movable slide rail relies on the inner side of the supporting portion, and is mutually buckled or separated with the front buckle part through the notch portion, and when the movable slide rail is buckled, its front end is located in the internal groove and is positioned against the elastic soft plastic portion.

[0007] The bracket is provided with a transition part, and the transition part is located in the notch; the front buckle (5) is provided with a buckle guide part, and at least one buckle platform part (14) is provided at the rear end of the buckle guide part; the front buckle part elastically moves on the transition part, and when elastically moving, it is guided by the buckle guide part and the notch part, and when guided to a certain position, it is buckled with the notch part to realize the matching connection between the movable slide rail and the side plate.

[0008] The transition part is provided with an elastic member, one end of which elastically acts on the front buckle member, and the other end of which elastically acts on the transition part; an avoidance position is provided on the supporting part; the front buckle member elastically moves on the transition part through the elastic member, and is retracted and contracted on the avoidance position during the elastic movement, and is buckled or disengaged with each other through the buckling platform part and the notch part during the elastic retractive movement.

[0009] The longitudinal dimension of the notch is greater than the longitudinal dimension of the front buckle; the front buckle moves longitudinally on the notch when the side plate moves up and down relative to the movable slide rail.

[0010] The bracket is provided with a sliding portion, which is located outside the notch; the up and down adjustment assembly includes an up and down adjustment piece, a screw and a gear, wherein one side of the gear is threadedly connected to the screw, and the other side is meshed with the up and down adjustment piece; the up and down adjustment piece is anti-retrogressively slidably forward and backward on the sliding portion through the cooperation of the screw and the gear, and its upper surface moves up and down relative to the movable slide rail when sliding forward and backward.

[0011] A guiding inclined portion is provided between the up-down adjusting member and the movable slide rail; when the up-down adjusting member slides, the guiding inclined portion guides and acts on the movable slide rail, and its upper surface moves up and down relative to the upper surface of the movable slide rail.

[0012] The supporting portion is located at the lower part of the side portion and is integrally bent toward the inner side of the side portion, or one supporting portion is provided and is separately provided at the inner side of the lower part of the side portion, or a plurality of supporting portions are provided, a spacing is formed between the plurality of supporting portions, and the plurality of supporting portions are separately provided at the inner side of the lower part of the side portion.

[0013] The structure also includes a bottom plate; the up and down adjustment assembly is located below the bottom plate and includes at least up and down adjustment pieces; the bottom of the bottom plate is supported on the support portion, the movable slide rail and the upper surface of the up and down adjustment pieces.

[0014] The up and down adjustment member slides forward and backward on the bracket in an anti-retraction manner, and when sliding forward and backward, the upper surface of the member drives the bottom plate to move up and down relative to the movable slide rail, so as to achieve the up and down position adjustment between the movable slide rail and the side plate.

[0015] The rear end of the movable slide rail is also provided with a rear buckle portion, and is buckled on the bottom plate or the side plate through the rear buckle portion.

[0016] The side part is a planar sheet metal part, the inner side and / or outer side of which is substantially vertical, and the inner sides of the front and rear ends of the side part are integrally bent to form a front connecting part and a rear connecting part for connecting the front panel and the rear back panel.

[0017] The present invention improves the above structure and makes the side panels of metal materials, thereby simplifying the production process of the side panels, making the production of the side panels more convenient and reducing the production cost. Subsequently, a support portion is integrally bent or separately provided at the lower portion of the planar side portion, and a front connecting device is provided below the support portion. The front connecting device is respectively provided with a front buckling piece that can be detachably buckled with the movable slide rail and an up and down adjustment component that can adjust the upper and lower positions of the side panels relative to the movable slide rail. This not only simplifies the assembly process of the side panels and the movable slide rail, making the assembly between the two faster and improving the assembly efficiency, but also facilitates the user to adjust the upper and lower positions between the side panels and the movable slide rail to improve the overall aesthetics of the drawer. Moreover, since the front connecting device is located below the support portion and the front buckling piece and the up and down adjustment component are provided at the same time, not only can the integration between the front buckling piece and the up and down adjustment component be improved The arrangement reduces the problem of the front connecting device occupying the internal space of the drawer, thereby increasing the storage capacity inside the drawer and allowing users to store more objects. It can also prevent users from accidentally touching the front buckle and the up and down adjustment components when opening and closing the drawer, causing unstable use of the drawer and easy injury to the user, thereby improving the stability and safety of the drawer. At the same time, the front end of the movable slide rail will abut against the bracket of the front connecting device during assembly, thereby improving the assembly stability of the movable slide rail and avoiding problems such as loose assembly and / or adjustment failure due to unstable assembly during assembly and / or up and down adjustment. In addition, the planar side portion can also avoid the problem of the prior art that a cavity is formed inside the side panel shell, resulting in less storage space inside the drawer, thereby further increasing the storage capacity inside the drawer, allowing users to store more objects and improving the user experience.

[0018] In general, it has the characteristics of simple and reasonable structure, excellent performance, low manufacturing cost, quick assembly, large holding space, neat and exquisite appearance, and strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic diagram of the exploded structure of the first embodiment of the present invention.

[0020] Figure 2 It is a schematic diagram of the assembly structure of the front connecting device, the side panels and the movable slide rails according to the first embodiment of the present invention.

[0021] Figure 3 It is a schematic diagram of the assembly structure of the side panels and movable slide rails of the first embodiment of the present invention.

[0022] Figure 4 , Figure 5 It is a schematic diagram of the exploded structure of the front connecting device and the side panels of the first embodiment of the present invention.

[0023] Figure 6-Figure 8 It is a schematic diagram of the front connecting device and the side panel assembly structure of the first embodiment of the present invention.

[0024] Fig. 9 It is a schematic diagram of the exploded structure of the front connection device of the first embodiment of the present invention.

[0025] Fig.10 It is a schematic diagram of the assembly structure of the front connecting device of the first embodiment of the present invention.

[0026] Fig.11 It is a schematic diagram of the adjustment of the movable slide rail and the side plate according to the first embodiment of the present invention.

[0027] Fig.12 It is a schematic diagram of the exploded structure of the side panel of the first embodiment of the present invention.

[0028] Fig.13 It is a schematic diagram of the exploded structure of the side panel of the second embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] First embodiment

[0031] See also Figure 1-Figure 12 The integrated optimized drawer adjustment structure comprises a movable slide rail 1 and a side panel. The side panel is made of a metal material and is provided with a planar side portion 2 thereon. The side portion 2 extends downward and is integrally bent or separately provided with a supporting portion 3. A front connecting device is provided below the supporting portion 3. The front connecting device comprises a bracket 4. The bracket 4 is located below the supporting portion 3 and is provided with a front buckle 5 and an up and down adjusting component thereon; a notch portion 6 is provided at the front portion of the movable slide rail 1, and its front end abuts against the bracket 4; the front buckle 5 is elastically movable on the bracket 4, and is buckled or separated from the notch portion 6 when elastically movable, so as to realize a detachable mating connection between the movable slide rail 1 and the side panel; the up and down adjusting component is movably arranged on the bracket 4, and drives the side panel to move up and down relative to the movable slide rail 1 when movable, so as to realize the up and down position adjustment between the movable slide rail 1 and the side panel.

[0032] The side panels are made of metal materials, thereby simplifying the production process of the side panels, making the production of the side panels more convenient and reducing the production cost. Subsequently, a support portion 3 is integrally bent or separately provided at the lower portion of the planar side portion 2, and a front connecting device is provided below the support portion 3. The front connecting device is respectively provided with a front buckling piece 5 that is detachably connected to the movable slide rail 1 and an up and down adjustment component that can adjust the up and down position of the side panel relative to the movable slide rail 1. This not only simplifies the assembly process of the side panel and the movable slide rail 1, making the assembly between the two faster and improving the assembly efficiency, but also facilitates the user to adjust the up and down position between the side panel and the movable slide rail 1, so as to improve the overall aesthetics of the drawer.

[0033] Since the front connecting device is located below the supporting portion 3 and is provided with a front buckle 5 and an up-and-down adjusting assembly at the same time, it can not only improve the integrated setting between the front buckle 5 and the up-and-down adjusting assembly, thereby reducing the problem of the front connecting device occupying the internal space of the drawer, thereby increasing the storage capacity inside the drawer and allowing users to store more objects, but also prevent users from accidentally touching the front buckle 5 and the up-and-down adjusting assembly when opening and closing the drawer, causing the drawer to be unstable and the user to be easily injured, thereby improving the stability and safety of the drawer.

[0034] During assembly, the front end of the movable slide rail 1 will abut against the bracket 4 of the front connecting device, which can effectively improve the assembly stability of the movable slide rail 1 and avoid problems such as loose assembly and / or adjustment failure due to unstable assembly during assembly and / or up and down adjustment.

[0035] Specifically, a supporting portion 7 is integrally bent downward or separately provided on the inner side of the supporting portion 3, and a notch 8 is formed between the outer side of the supporting portion 7 and the bottom of the supporting portion 3 and / or the outer side of the side portion 2; the bracket 4 is fixedly arranged on the notch 8, and a built-in groove 9 is provided on the bracket 4 or between the bracket 4 and the supporting portion 7; the movable slide rail 1 relies on the inner side of the supporting portion 7, and its front end is located in the built-in groove 9 and abuts against the bracket 4.

[0036] In order to improve the assembly stability of the movable slide 1, the bracket 4 is provided with an extension portion 10 toward the rear end of the movable slide 1. The extension portion 10 is located outside the notch 8 and is provided with a built-in groove 9 between the extension portion 10 and the supporting portion 7. An elastic soft plastic portion 11 is also provided at the end of the built-in groove 9. The movable slide 1 is supported on the inner side of the supporting portion 7 and is mutually buckled or separated with the front buckle 5 through the notch 6. When the movable slide 1 is buckled, its front end is located in the built-in groove 9 and is positioned against the elastic soft plastic portion 11. The provision of the elastic soft plastic portion 11 can not only reduce the collision and noise caused by the movable slide 1 during assembly, but also perform elastic or plastic positioning on the front end of the movable slide 1, making the assembly of the movable slide 1 more secure.

[0037] The bracket 4 is provided with an adapter portion 12, and the adapter portion 12 is located in the notch 8; the front buckle 5 is provided with a buckle guide portion 13, and at least one buckle platform portion 14 is provided at the rear end of the buckle guide portion 13; the front buckle 5 elastically moves on the adapter portion 12, and when elastically moving, it is guided by the buckle guide portion 13 and the notch portion 6, and when guided to a certain position, it is buckled with the notch portion 6 by the buckle platform portion 14, so as to realize the matching connection between the movable slide rail 1 and the side panel.

[0038] In order to enable the front buckle 5 to reasonably elastically move on the adapter 12, an elastic member 15 is provided on the adapter 12, one end of the elastic member 15 elastically acts on the front buckle 5, and the other end elastically acts on the adapter 12; an avoidance position 16 is provided on the supporting portion 7; the front buckle 5 elastically moves on the adapter 12 through the elastic member 15, and is telescoped on the avoidance position 16 during the elastic movement, and is mutually buckled or disengaged with the notch portion 6 through the buckling platform portion 14 during the elastic telescopic movement.

[0039] The longitudinal dimension of the notch portion 6 is larger than that of the front buckle 5. Due to the difference in the longitudinal dimensions of the two, the front buckle 5 is longitudinally limited on the notch portion 6 when the side panel moves up and down relative to the movable slide rail 1. This not only avoids the jamming problem between the movable slide rail 1 and the side panel when adjusting up and down, but also limits the adjustment position of the two to improve the user experience.

[0040] In order to enable the front buckle 5 and the up and down adjustment assembly to be integrated on the bracket 4, a sliding portion 17 is provided on the bracket 4, and the sliding portion 17 is located outside the notch 8; the up and down adjustment assembly includes an up and down adjustment member 18, a screw rod 19 and a gear 20, wherein one side of the gear 20 is threadedly connected to the screw rod 19, and the other side is meshedly connected to the up and down adjustment member 18; the up and down adjustment member 18 is on the anti-retraction front and back sliding sliding portion 17 through the cooperation of the screw rod 19 and the gear 20, and its upper surface moves up and down relative to the movable slide rail 1 when sliding back and forth.

[0041] Due to the meshing action between the upper and lower adjusting parts 18, the screw rod 19 and the gear 20, the upper and lower adjusting parts 18 can slide forward and backward on the sliding part 17 in an anti-retreat manner. Since the upper and lower adjusting parts 18 can slide in an anti-retreat manner, it can ensure that there will be no displacement problem between the movable slide rail 1 and the side plate after the up and down adjustment, thereby ensuring the stability of the up and down position adjustment of the two.

[0042] In order to make the up and down position adjustment between the movable slide rail 1 and the side plate more reasonable and smooth, a guiding inclined portion 21 is provided between the up and down adjusting member 18 and the movable slide rail 1; when sliding, the up and down adjusting member 18 is guided and inclined on the movable slide rail 1 by the guiding inclined portion 21, and its upper surface moves up and down relative to the upper surface of the movable slide rail 1.

[0043] There are a plurality of support parts 3, with intervals formed between the support parts 3, and the support parts 3 are separately arranged on the inner side of the lower part of the side part 2. The arrangement of the plurality of support parts 3 can effectively reduce the production cost.

[0044] The structure further comprises a bottom plate 22 ; the bottom of the bottom plate 22 is supported on the upper surfaces of the supporting portion 3 , the movable slide rail 1 and the upper and lower adjusting members 18 .

[0045] The up-and-down adjustment member 18 slides forward and backward on the bracket 4 in an anti-retraction manner, and when sliding forward and backward, drives the bottom plate 22 to move up and down relative to the movable slide rail 1 through its upper surface to achieve the up-and-down position adjustment between the movable slide rail 1 and the side plate.

[0046] A rear buckle portion 23 is also provided at the rear end of the movable slide rail 1 , and is buckled to the bottom plate 22 or the side plate through the rear buckle portion 23 .

[0047] The side portion 2 is a planar sheet metal part, and its inner side and / or outer side are basically vertical. The inner side and outer side of the side portion 2 of this embodiment are basically vertical. Since the inner side and outer side of the side portion 2 are vertical, it can avoid the problem of forming a cavity inside the side panel shell in the prior art, resulting in less storage space inside the drawer, thereby further increasing the storage capacity inside the drawer, allowing users to store more objects, thereby greatly improving the user experience.

[0048] A front connecting portion 24 and a rear connecting portion 25 are integrally bent at the inner sides of the front and rear ends of the side portion 2, respectively, and the front connecting portion 24 and the rear connecting portion 25 can be used to connect the front panel and the back panel, thereby further simplifying the assembly process of the drawer.

[0049] Second embodiment

[0050] See also Fig.13 The integrated optimized drawer adjustment structure is different from the first embodiment in that: the support portion 3 is provided with one and is separately provided on the lower inner side of the side portion 2. Since a single support portion 3 is provided, the bottom plate 22 can be better supported, thereby improving the assembly stability of the drawer.

[0051] Other parts not described are the same as those in the first embodiment.

[0052] The above is a preferred embodiment of the present invention, which shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of the present invention to be protected is defined by the attached claims and their equivalents.

Claims

1. An integrated and optimized drawer adjustment structure, comprising a movable slide rail (1) and a side panel, characterized in that: The side plate is made of metal material and is provided with a flat side surface (2). The side surface (2) extends downward and is integrally bent or separately provided with a supporting portion (3). A front connecting device is provided below the supporting portion (3). The front connecting device includes a bracket (4). The bracket (4) is located below the supporting portion (3) and is provided with a front buckle (5) and an up and down adjustment component. The front portion of the movable slide rail (1) is provided with a notch (6) and its front end abuts against the bracket (4). The front buckle (5) is elastically movable on the bracket (4) and is mutually buckled or separated from the notch (6) when elastically movable, so as to realize a detachable and mating connection between the movable slide rail (1) and the side plate. The up-and-down adjustment component is movably arranged on the bracket (4), and when moving, drives the side plate to move up and down relative to the movable slide rail (1), so as to achieve up-and-down position adjustment between the movable slide rail (1) and the side plate; The inner side of the supporting part (3) is integrally bent downward or separately provided with a supporting part (7), and a notch (8) is formed between the outer side of the supporting part (7) and the bottom of the supporting part (3) and / or the outer side of the side part (2); the bracket (4) is fixedly arranged on the notch (8), and a built-in groove (9) is arranged on the bracket (4) or between the bracket (4) and the supporting part (7); the movable slide rail (1) is supported on the inner side of the supporting part (7), and its front end is located in the built-in groove (9) and abuts against the bracket (4); The longitudinal dimension of the notch portion (6) is greater than the longitudinal dimension of the front buckle member (5); the front buckle member (5) moves longitudinally on the notch portion (6) when the side plate moves up and down relative to the movable slide rail (1); The bracket (4) is provided with a sliding portion (17), and the sliding portion (17) is located outside the notch (8); the up-and-down adjustment assembly comprises an up-and-down adjustment member (18), a screw rod (19) and a gear (20), wherein one side of the gear (20) is threadedly connected to the screw rod (19), and the other side is meshedly connected to the up-and-down adjustment member (18); the up-and-down adjustment member (18) is mounted on the anti-retraction front-and-back sliding portion (17) through the cooperation of the screw rod (19) and the gear (20), and its upper surface moves up and down relative to the movable slide rail (1) when sliding back and forth; A guiding inclined portion (21) is provided between the upper and lower adjusting member (18) and the movable slide rail (1); when the upper and lower adjusting member (18) slides, the guiding inclined portion (21) guides and acts on the movable slide rail (1), and its upper surface moves up and down relative to the upper surface of the movable slide rail (1).

2. The integrated and optimized drawer adjustment structure according to claim 1 is characterized in that: The bracket (4) is provided with an extension portion (10) toward the rear end of the movable slide rail (1); the extension portion (10) is located outside the notch (8) and is provided with an internal groove (9) between the extension portion (10) and the supporting portion (7); an elastic soft plastic portion (11) is also provided at the end of the internal groove (9); the movable slide rail (1) is supported on the inner side of the supporting portion (7) and is mutually connected or separated with the front buckle (5) through the notch (6); when the movable slide rail (1) is buckled, its front end is located in the internal groove (9) and is positioned against the elastic soft plastic portion (11).

3. The integrated and optimized drawer adjustment structure according to claim 1 is characterized in that: The bracket (4) is provided with a transition part (12), and the transition part (12) is located in the notch (8); the front buckle (5) is provided with a buckle guide part (13), and at least one buckle platform part (14) is provided at the rear end of the buckle guide part (13); the front buckle (5) elastically moves on the transition part (12), and when elastically moving, the buckle guide part (13) and the notch part (6) are mutually guided, and when guided to a certain position, the buckle platform part (14) and the notch part (6) are mutually buckled to realize the matching connection between the movable slide rail (1) and the side plate.

4. The integrated and optimized drawer adjustment structure according to claim 3 is characterized in that: The transition part (12) is provided with an elastic member (15), one end of which elastically acts on the front buckle member (5), and the other end of which elastically acts on the transition part (12); the supporting part (7) is provided with an avoidance position (16); the front buckle member (5) elastically moves on the transition part (12) through the elastic member (15), and is telescoped on the avoidance position (16) during the elastic movement, and is mutually engaged or disengaged with the notch part (6) through the buckle platform part (14) during the elastic telescopic movement.

5. The integrated and optimized drawer adjustment structure according to claim 1 is characterized in that: The supporting portion (3) is located at the lower part of the side portion (2) and is integrally bent toward the inner side of the side portion (2), or one supporting portion (3) is provided and is separately provided at the inner side of the lower part of the side portion (2), or a plurality of supporting portions (3) are provided, a spacing is formed between the plurality of supporting portions (3), and the plurality of supporting portions (3) are separately provided at the inner side of the lower part of the side portion (2).

6. The integrated and optimized drawer adjustment structure according to claim 1 is characterized in that: The invention also comprises a bottom plate (22); the up-down adjustment assembly is located below the bottom plate (22) and comprises at least an up-down adjustment member (18); the bottom of the bottom plate (22) is supported on the support portion (3), the movable slide rail (1) and the upper surface of the up-down adjustment member (18); the up-down adjustment member (18) slides forward and backward on the bracket (4) in an anti-retraction manner, and drives the bottom plate (22) to move up and down relative to the movable slide rail (1) through its upper surface when sliding forward and backward, so as to achieve the up-down position adjustment between the movable slide rail (1) and the side plate; the rear end of the movable slide rail (1) is also provided with a rear buckle (23), and is buckled to the bottom plate (22) or the side plate through the rear buckle (23); the side portion (2) is a planar sheet metal part, the inner side and / or the outer side of which is basically vertical, and the inner sides of the front and rear ends of the side portion (2) are respectively integrally bent with a front connecting portion (24) and a rear connecting portion (25) for connecting the front panel and the rear back plate.

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