Drawer tail height adjusting device

Abstract

The utility model relates to a drawer tail height adjusting device. The drawer tail height adjusting device comprises a moving part, a tail hook, an adjusting assembly and a locking assembly, the moving part comprises an adjusting plate, and the adjusting plate is installed on the side face of a guide rail at the bottom of a drawer and faces the guide rail on the other side; the tail hook is mounted above the guide rail, the first end is fixedly connected with the adjusting plate, and the second end is fixedly connected with the drawer tail plate; the adjusting assembly and the locking assembly are installed on the side face of the adjusting plate, and the adjusting assembly is used for driving the adjusting plate to move up and down so as to adjust the height of the tail of the drawer. The locking assembly is used for locking the position of the adjusting plate. According to the drawer tail height adjusting device, the height of the drawer tail can be conveniently adjusted, and therefore the gap between the drawer panel and the cabinet body is adjusted to be uniform.

Description

Technical Field

[0001] The present application relates to the technical field of furniture installation, and in particular to a drawer tail height adjustment device. Background Art

[0002] Prefabricated drawers are typically assembled on-site after their individual components are manufactured separately. Accumulated errors during the production and assembly processes can lead to uneven gaps between the drawer front and the cabinet, causing the drawer front to tilt forward or backward.

[0003] In traditional technology, the gap between the drawer panel and the drawer side panels is adjusted to make the gap between the drawer panel and the cabinet body uniform up and down, but the adjustment range between the drawer panel and the side panels is small and the adjustment is inconvenient. Utility Model Content

[0004] Based on this, it is necessary to provide a drawer tail height adjustment device to address the problem of uneven gap between the assembled drawer panel and the cabinet body, so as to adjust the gap between the drawer panel and the cabinet body by adjusting the height of the drawer tail.

[0005] The present application is implemented in the following manner: The present application provides a drawer tail height adjustment device, comprising:

[0006] A moving member, comprising an adjusting plate, wherein the adjusting plate is mounted on a side of the guide rail at the bottom of the drawer and faces the guide rail on the other side;

[0007] A tail hook is installed above the guide rail, a first end of the tail hook is fixedly connected to the adjustment plate, and a second end of the tail hook is fixedly connected to the drawer tail plate;

[0008] An adjustment component is installed on the side of the adjustment plate, and drives the adjustment plate to move up and down, thereby driving the tail hook to adjust the height of the drawer tail up and down;

[0009] A locking assembly is installed on the side of the adjustment plate and is used to lock the position of the adjustment plate after the adjustment plate is adjusted to a predetermined height.

[0010] In one embodiment, the device further includes a fixing member, wherein the fixing member includes a fixing plate disposed outside the adjustment plate and fixedly connected to the guide rail;

[0011] One of the fixing plate and the adjusting plate is provided with a guide groove extending in the up-down direction, and the other is provided with a limiting protrusion which is matched with the guide groove.

[0012] In one embodiment, the adjustment assembly includes a rotary adjustment member and a guide column, a mounting cavity for accommodating the rotary adjustment member is defined between the fixed plate and the adjustment plate, and a spiral groove is provided on a side of the rotary adjustment member facing the adjustment plate;

[0013] The guide post is arranged on the adjustment plate and extends into the spiral groove to cooperate with the rotation of the rotary adjustment member to realize the up and down movement of the adjustment plate.

[0014] In one embodiment, the rotary adjustment member includes a rotating portion located in the mounting cavity, and the spiral groove is provided on a side of the rotating portion facing the adjustment plate;

[0015] The fixing plate is provided with an operating hole at a position corresponding to the mounting cavity, and the rotary adjustment member further includes a first operating portion provided on the outside of the rotating portion and extending out of the operating hole, and the diameter of the rotating portion is larger than the operating hole; and / or, an adjustment port is provided on the circumferential side of the mounting cavity, and a second operating portion is provided on the circumferential side of the rotating portion, and the second operating portion extends out of the adjustment port.

[0016] In one embodiment, the first operating portion is a slot or a cross slot, and the second operating portion is a gear-shaped structure.

[0017] In one embodiment, the locking assembly includes a first locking piece and a first locking hole located on the adjustment plate, and the fixed plate is provided with a first strip hole extending up and down corresponding to the first locking hole. The first locking piece passes through the first strip hole and cooperates with the first locking hole to lock the fixed plate and the adjustment plate.

[0018] In one embodiment, at least one of the fixed plate and the adjustment plate is provided with a plurality of first arc-surface protrusions facing the other, and the fixed plate and the adjustment plate are in contact with each other through the first arc-surface protrusions;

[0019] and / or,

[0020] At least one of the adjustment plate and the guide rail is provided with a plurality of second arc-surface protrusions facing the other, and the adjustment plate and the guide rail are in contact with each other through the second arc-surface protrusions.

[0021] In one embodiment, the fixing member further comprises a guide plate mounted above the guide rail, wherein the guide plate is connected to the fixing plate;

[0022] The moving member further includes a connecting plate mounted above the guide rail, the connecting plate being fixedly connected to the adjusting plate and the first end of the tail hook respectively;

[0023] At least one of the guide plate and the connecting plate is provided with a plurality of third arc-surface protrusions facing the other, and the guide plate and the connecting plate are in contact with each other through the third arc-surface protrusions.

[0024] In one embodiment, the guide plate is L-shaped, and a fourth arc-surface protrusion facing the top surface of the guide rail is provided at the bottom of the guide plate, and the bottom of the guide plate contacts the top surface of the guide rail through the fourth arc-surface protrusion;

[0025] The guide plate is located at the rear side of the fixing plate along the guide rail, the connecting plate is located at the rear side of the adjusting plate along the guide rail, and the connecting plate is located at the front side of the guide plate;

[0026] A second locking hole is provided on the connecting plate, and a second strip hole extending up and down corresponding to the second locking hole is provided on the guide plate. A second locking piece passes through the second strip hole and cooperates with the second locking hole to lock the guide plate and the connecting plate.

[0027] In one embodiment, a clamping portion with an opening toward the tail of the guide rail is provided on the side of the guide rail, and the fixing plate includes a connecting portion formed by bending toward the guide rail, and a avoidance groove is formed at the front end of the connecting portion, and the clamping portion clamps the connecting portion after passing through the avoidance groove.

[0028] The above-mentioned drawer tail height device is respectively installed on the left and right side guide rails at the bottom of the drawer, connected to the drawer tail plate through the tail hook, and the height of the movable part is adjusted by the adjustment component, so that the movable part moves up and down, and the drawer tail is driven up and down by the tail hook to adjust the height of the drawer tail, and thereby adjust the gap between the drawer panel and the cabinet body, so that the gap between the drawer panel and the cabinet body is uniform; the present application also locks the position of the adjustment plate through the locking component to keep the drawer in the adjusted state. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of a drawer tail height adjustment device installed on a guide rail in one embodiment of the present application;

[0030] Figure 2 for Figure 1 Schematic diagram of the local structure;

[0031] Figure 3 This is an exploded view of a drawer tail height adjustment device in one embodiment of the present application;

[0032] Figure 4 This is a structural diagram of a fixing member in an embodiment of the present application;

[0033] Figure 5 This is a structural diagram of an adjusting member in one embodiment of the present application;

[0034] Figure 6 and Figure 7 Schematic diagram of the structure of a rotary adjustment member in one embodiment of the present application.

[0035] Description of Figure Numbers:

[0036] 100. Drawer tail height adjustment device;

[0037] 110, moving part; 111, adjusting plate; 1111, second arc-surface protrusion; 1112, limiting protrusion; 112, connecting plate; 1121, second locking hole;

[0038] 120, tail hook;

[0039] 130, fixing member; 131, fixing plate; 1311, mounting cavity; 1312, operating hole; 1313, adjustment port; 1314, guide groove; 1315, connecting portion; 1316, avoidance groove; 1317, first strip hole; 132, guide plate; 1321, third arc-surface raised portion; 1322, fourth arc-surface raised portion; 1323, second strip hole;

[0040] 140. Adjustment assembly; 141. Rotational adjustment member; 1411. Rotating portion; 1412. Spiral groove; 1413. First operating portion; 1414. Second operating portion; 142. Guide column;

[0041] 150. Locking assembly; 151. First locking member; 152. First locking hole;

[0042] 200, guide rail; 210, fixed rail; 220, sliding rail; 221, clamping part. DETAILED DESCRIPTION

[0043] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0045] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0046] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0048] See Figure 1 A drawer tail height adjustment device 100 provided in one embodiment of the present application is used to be installed at the tail of a guide rail 200 for installing a drawer, and to adjust the height of the drawer tail relative to the guide rail 200.

[0049] The guide rail 200 includes a fixed rail 210 and a movable rail 220. The fixed rail 210 is relatively fixed in the cabinet body, and the drawer is installed on the movable rail 220. The push-pull operation is achieved by the relative movement between the movable rail 220 and the fixed rail 210. In this embodiment, the drawer is fixed on the movable rail 220. Figure 1 The guide rail 200 shown is the right guide rail, and the left side of the movable rail 220 is relatively exposed. Correspondingly, when the drawer tail height adjustment device of this embodiment is installed on the left guide rail, the right side of its movable rail is relatively exposed.

[0050] The drawer tail height adjustment device of the embodiment of the present application is used to be installed on the left and right side guide rails of the drawer bottom respectively, and the height of the drawer tail is adjusted as a whole by adjusting the left and right sides respectively.

[0051] like Figure 1-2 As shown, the drawer tail height adjustment device 100 of the embodiment of the present application includes a moving member 110, a tail hook 120, an adjustment assembly 140 and a locking assembly 150, wherein the moving member 110 includes an adjustment plate 111, and the adjustment plate 111 is installed on the side of the guide rail 200 at the bottom of the drawer, facing the guide rail on the other side, that is, the adjustment plate 111 is as shown in FIG. Figure 1 When installed on the right guide rail 200 as shown, it is installed on the left side of the right guide rail 200 and is lower than the upper surface of the guide rail 200. Since the drawer is installed above the guide rail 200, the adjustment plate 111 is also located below the bottom plate of the drawer.

[0052] The tail hook 120 is installed above the guide rail 200. Figure 1 Above the middle moving rail, its first end is fixedly connected to the adjustment plate 111, and its second end is fixedly connected to the drawer tail plate. The tail hook 120 can be fixedly connected to the drawer tail plate by external tools or methods such as screws, adhesives, or by inserting into the drawer tail plate.

[0053] To facilitate adjustment, both the adjustment assembly 140 and the locking assembly 150 are mounted on the side of the adjustment plate 111. The adjustment assembly 140 is used to drive the adjustment plate 111 up and down, thereby driving the tail hook 120 up and down, and thus driving the drawer tail plate up and down, thereby adjusting the height of the drawer tail. The locking assembly 150 is used to lock the adjustment plate 111 in place before and after the adjustment assembly 140 adjusts the height of the adjustment plate 111, allowing it to remain in its current position, thereby maintaining the tail hook 120 and the drawer tail plate at their current height. Specifically, the locking assembly 150 can lock the adjustment plate 111 to the movable rail. This locking method can be direct locking between the adjustment plate 111 and the side of the movable rail, or by providing an auxiliary element on the movable rail to lock the adjustment plate 111 to the locking element, thereby indirectly locking the adjustment plate 111 to the movable rail.

[0054] The drawer tail height adjustment device of the embodiment of the present application is respectively installed on the left and right side guide rails at the bottom of the drawer, connected to the drawer tail plate through the tail hook, and adjusts the height of the movable part through the adjustment component, so that the movable part moves up and down, and drives the drawer tail to move up and down through the tail hook, thereby adjusting the height of the drawer tail, and thereby adjusting the gap between the drawer panel and the cabinet body, so that the gap between the drawer panel and the cabinet body is uniform; the present application also locks the position of the adjustment plate through the locking component to keep the drawer in the adjusted state.

[0055] like Figure 1-3 As shown, in one embodiment, the drawer tail height adjustment device 100 further includes a fixing member 130, which includes a fixing plate 131 disposed outside the adjustment plate 111 and fixedly connected to the guide rail 200. Specifically, the fixing plate 131 is fixedly connected to the movable rail. The fixing plate 131 defines the adjustment plate 111 between the fixing plate 131 and the side of the guide rail 200.

[0056] like Figure 1-5 As shown, the fixed plate 131 is provided with a guide groove 1314 extending in the up and down directions, and the adjusting plate 111 is correspondingly provided with a limiting protrusion 1112 that cooperates with the guide groove 1314, so that the adjusting plate 111 can be limited when the adjusting plate 111 moves up and down relative to the fixed plate 131.

[0057] In other embodiments, the guide groove 1314 and the limiting protrusion 1112 may be multiple, or the limiting protrusion 1112 may be provided on the fixing plate 131 and the guide groove 1314 may be provided on the adjusting plate 111 .

[0058] like Figure 1-7 As shown, in one embodiment, the adjustment assembly 140 includes a rotary adjustment member 141 and a guide column 142. A mounting cavity 1311 for accommodating the rotary adjustment member 141 is defined between the fixed plate 131 and the adjustment plate 111. A spiral groove 1412 is provided on the side of the rotary adjustment member 141 facing the adjustment plate 111. The guide column 142 is provided on the adjustment plate 111 and extends into the spiral groove 1412 to cooperate with the rotation of the rotary adjustment member 141 to realize the up and down movement of the adjustment plate 111.

[0059] Specifically, the installation cavity 1311 can be formed by the part of the fixed plate 131 protruding outward and enclosing it with the adjustment plate 111. The spiral groove 1412 is eccentrically arranged with the center of the rotating adjustment member 141. Therefore, when the rotating adjustment member 141 rotates, under the limiting action of the guide groove 1314 and the limiting protrusion 1112, the guide column 142 is driven to move up and down, thereby driving the adjustment plate 111 to move up and down, thereby realizing the adjustment of the height of the tail of the drawer.

[0060] To realize the rotation adjustment operation of the rotation adjustment part, as Figure 2-7As shown, the rotary adjustment member 141 includes a rotating portion 1411 located within the mounting cavity 1311, with a spiral groove 1412 provided on the side of the rotating portion 1411 facing the adjustment plate 111. The fixed plate 131 has an operating hole 1312 provided at a position corresponding to the mounting cavity 1311. The rotary adjustment member 141 also includes a first operating portion 1413 located outside the rotating portion 1411, having a smaller diameter than the operating hole 1312 and extending out of the operating hole 1312. The diameter of the rotating portion 1411 is larger than the operating hole 1312. In this embodiment, the first operating portion 1413 extends outside the operating hole 1312, allowing it to be operated manually or with a tool to rotate the rotating portion 1411 and move the guide post 142 up and down.

[0061] like Figure 2-7 As shown, in this embodiment, an adjustment port 1313 may be provided at the bottom of the installation cavity 1311, and a second operating portion 1414 may be provided on the peripheral side of the rotating portion 1411. The second operating portion 1414 extends out of the adjustment port 1313, so that the first operating portion 1413 can be operated manually or by a tool to drive the rotating portion 1411 to rotate and drive the guide column 142 to move up and down.

[0062] Specifically, such as Figure 2-7 As shown, the first operating portion 1413 is a cross groove, and the second operating portion 1414 is a gear-shaped structure. Figure 2-7 As shown, in order to lock the upper and lower positions of the adjustment plate 111, this embodiment locks the adjustment plate 111 and the fixed plate 131. Specifically, the locking assembly 150 includes a first locking piece 151 and a first locking hole 152 located on the adjustment plate 111. The fixed plate 131 is provided with a first strip hole 1317 extending up and down corresponding to the first locking hole 152. The first locking piece 151 passes through the first strip hole 1317 and cooperates with the first locking hole 152 to lock the fixed plate 131 and the adjustment plate 111.

[0063] Preferably, the first locking piece 151 , the first locking hole 152 and the first strip-shaped hole 1317 may be multiple groups.

[0064] Specifically, the first locking hole 152 can be a threaded hole, and the first locking member 151 can be a screw. The screw passes through the first bar hole 1317 and cooperates with the threaded hole, which can adjust the distance between the fixing plate 131 and the adjustment plate 111, so that the adjustment plate 111 is close to the fixing plate 131 or the two are separated, so that the height of the adjustment plate 111 can be adjusted or the adjustment plate 111 can be locked.

[0065] Preferably, at least one of the fixed plate 131 and the adjustment plate 111 is provided with a plurality of first curved protrusions (not shown) facing the other. The fixed plate 131 and the adjustment plate 111 are in contact via the first curved protrusions, thereby reducing friction between the two when the adjustment plate 111 moves relative to the fixed plate 131. The first curved protrusions are preferably hemispherical in shape.

[0066] In order to make the adjustment plate 111 move up and down more smoothly relative to the side of the guide rail 200, as shown in FIG. Figure 5 As shown, in a preferred embodiment, the adjustment plate 111 is provided with a plurality of second curved surface protrusions 1111 on the side facing the guide rail 200, and the adjustment plate 111 and the guide rail 200 are in contact with each other through the second curved surface protrusions 1111. In other embodiments, the second curved surface protrusions 1111 may also be provided on the side of the guide rail 200.

[0067] In one embodiment, if Figure 2-5 As shown, the fixing member 130 further includes a guide plate 132 mounted above the guide rail 200, and the guide plate 132 is connected to the fixing plate 131; the moving member 110 further includes a connecting plate 112 mounted above the guide rail 200, and the connecting plate 112 is fixedly connected to the adjustment plate 111 and the first end of the tail hook 120 respectively; a third curved surface protrusion 1321 is provided on the side of the connecting plate 112 facing the guide plate 132, and the guide plate 132 and the connecting plate 112 are in contact via the third curved surface protrusion 1321. In other embodiments, the third curved surface protrusion 1321 can also be provided on the side of the guide plate 132 facing the connecting plate 112.

[0068] In this embodiment, since the tail hook 120 is arranged above the guide rail 200 and away from the adjustment plate 111, by further arranging a guide plate 132 above the guide rail 200 and arranging a connecting plate 112 connected to the fixed plate 131, the connection between the guide plate 132 and the tail hook 120 can be strengthened, so that the up and down movement of the tail hook 120 is more stable and no deviation will occur during the movement. At the same time, the connecting plate 112 can further stabilize the moving direction of the guide plate 132, thereby stabilizing the moving direction of the tail hook 120.

[0069] In a preferred embodiment, if Figure 2-4 As shown, the guide plate 132 is L-shaped, and the bottom surface of the guide plate 132 parallel to the guide rail 200 is provided with a fourth arc-shaped protrusion 1322 facing the top surface of the guide rail 200. The bottom surface of the guide plate 132 contacts the top surface of the guide rail 200 through the fourth arc-shaped protrusion 1322.

[0070] Preferably, Figure 1-5As shown, the guide plate 132 is located on the rear side of the fixed plate 131 along the guide rail 200, the connecting plate 112 is located on the rear side of the adjustment plate 111 along the guide rail 200, and the connecting plate 112 is located on the front side of the guide plate 132; thereby, the drawer can be installed to the rear side of the fixed plate 131 and the adjustment plate 111, reducing the installation space of the drawer tail height adjustment device 100 of the embodiment of the present application in the drawer installation cavity 1311.

[0071] To achieve locking between the guide plate 132 and the connecting plate 112, as shown in FIG. Figure 4-5 As shown, a second locking hole 1121 is provided on the connecting plate 112, and a second strip hole 1323 extending up and down corresponding to the second locking hole 1121 is provided on the guide plate 132. The second locking piece passes through the second strip hole 1323 and cooperates with the second locking hole 1121 to lock the guide plate 132 and the connecting plate 112.

[0072] To achieve fixed connection between the fixing plate 131 and the guide rail 200, as shown in FIG. Figure 2-4 As shown, the side of the movable rail is provided with a clamping portion with an opening facing the rear end of the guide rail 200. The fixed plate 131 includes a connecting portion 1315 formed by bending toward the guide rail 200. The front end of the connecting portion 1315 forms a relief groove 1316. The clamping portion passes through the relief groove 1316 and clamps the connecting portion 1315. In this embodiment, the fixing plate 131 can be inserted into the clamping portion from the rear side of the guide rail 200 through the connecting portion 1315 to achieve a fixed connection between the fixing plate 131 and the guide rail 200, and the relief groove 1316 can provide guidance during the connection process.

[0073] In the embodiment of the present application, the movable part 110 can be a metal part or a plastic part, which is preferably processed as an integral part, or it can be processed in two parts and connected by other connection methods. The fixed part 130 can also be a metal part or a plastic part, which is preferably processed as an integral part, or it can be processed in two parts and connected by other connection methods.

[0074] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A drawer tail height adjustment device, characterized in that: include: A moving member, comprising an adjusting plate, wherein the adjusting plate is mounted on a side of the guide rail at the bottom of the drawer and faces the guide rail on the other side; A tail hook is installed above the guide rail, a first end of the tail hook is fixedly connected to the adjustment plate, and a second end of the tail hook is fixedly connected to the drawer tail plate; An adjustment component is installed on the side of the adjustment plate, and drives the adjustment plate to move up and down, thereby driving the tail hook to adjust the height of the drawer tail up and down; A locking assembly is installed on the side of the adjustment plate and is used to lock the position of the adjustment plate after the adjustment plate is adjusted to a predetermined height.

2. The drawer tail height adjustment device according to claim 1, characterized in that: The device further includes a fixing member, wherein the fixing member includes a fixing plate disposed outside the adjustment plate and fixedly connected to the guide rail; One of the fixing plate and the adjusting plate is provided with a guide groove extending in the up-down direction, and the other is provided with a limiting protrusion which is matched with the guide groove.

3. The drawer tail height adjustment device according to claim 2, characterized in that: The adjustment assembly includes a rotary adjustment member and a guide column, a mounting cavity for accommodating the rotary adjustment member is defined between the fixed plate and the adjustment plate, and a spiral groove is provided on a side of the rotary adjustment member facing the adjustment plate; The guide post is arranged on the adjustment plate and extends into the spiral groove to cooperate with the rotation of the rotary adjustment member to realize the up and down movement of the adjustment plate.

4. The drawer tail height adjustment device according to claim 3, characterized in that: The rotary adjustment member includes a rotating portion located in the mounting cavity, and the spiral groove is provided on a side of the rotating portion facing the adjustment plate; The fixing plate is provided with an operating hole at a position corresponding to the mounting cavity, and the rotary adjustment member further includes a first operating portion provided on the outside of the rotating portion and extending out of the operating hole, and the diameter of the rotating portion is larger than the operating hole; and / or, an adjustment port is provided on the circumferential side of the mounting cavity, and a second operating portion is provided on the circumferential side of the rotating portion, and the second operating portion extends out of the adjustment port.

5. The drawer tail height adjustment device according to claim 4, characterized in that: The first operating portion is a straight slot or a cross slot, and the second operating portion is a gear-shaped structure.

6. The drawer tail height adjustment device according to claim 2, characterized in that: The locking assembly includes a first locking piece and a first locking hole located on the adjustment plate. The fixed plate is provided with a first strip hole extending up and down corresponding to the first locking hole. The first locking piece passes through the first strip hole and cooperates with the first locking hole to lock the fixed plate and the adjustment plate.

7. The drawer tail height adjustment device according to claim 2, characterized in that: At least one of the fixed plate and the adjustment plate is provided with a plurality of first arc-surface protrusions facing the other, and the fixed plate and the adjustment plate are in contact with each other through the first arc-surface protrusions; and / or, At least one of the adjustment plate and the guide rail is provided with a plurality of second arc-surface protrusions facing the other, and the adjustment plate and the guide rail are in contact with each other through the second arc-surface protrusions.

8. The drawer tail height adjustment device according to claim 2, characterized in that: The fixing member further comprises a guide plate mounted above the guide rail, wherein the guide plate is connected to the fixing plate; The moving member further includes a connecting plate mounted above the guide rail, the connecting plate being fixedly connected to the adjusting plate and the first end of the tail hook respectively; At least one of the guide plate and the connecting plate is provided with a plurality of third arc-surface protrusions facing the other, and the guide plate and the connecting plate are in contact with each other through the third arc-surface protrusions.

9. The drawer tail height adjustment device according to claim 8, characterized in that: The guide plate is L-shaped, and a fourth arc-surface protrusion is provided at the bottom of the guide plate toward the top surface of the guide rail, and the bottom of the guide plate contacts the top surface of the guide rail through the fourth arc-surface protrusion; The guide plate is located at the rear side of the fixing plate along the guide rail, the connecting plate is located at the rear side of the adjusting plate along the guide rail, and the connecting plate is located at the front side of the guide plate; A second locking hole is provided on the connecting plate, and a second strip hole extending up and down corresponding to the second locking hole is provided on the guide plate. A second locking piece passes through the second strip hole and cooperates with the second locking hole to lock the guide plate and the connecting plate.

10. The drawer tail height adjustment device according to any one of claims 2 to 9, characterized in that: The side of the guide rail is provided with a clamping portion with an opening toward the tail of the guide rail. The fixing plate includes a connecting portion formed by bending toward the guide rail. The front end of the connecting portion forms a avoidance groove. The clamping portion passes through the avoidance groove and clamps the connecting portion.

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