A telescopic shelf

Abstract

The invention discloses a telescopic layer shelf, comprising a frame body, a bracket, a layer shelf and a locking mechanism; the bracket is arranged on the frame body; the layer shelf is arranged on the bracket through a front and rear sliding mechanism; the layer shelf is positioned at a front and rear position on the bracket through the locking mechanism, the upper end of a pressing plate of the locking mechanism can be rotatably connected to the front end of the layer shelf, the pressing plate can rotate around the left and right directions, a lever arm is provided on the pressing plate, a rocker can be rotatably arranged below the layer shelf, the front and rear ends of the rocker are respectively provided with a clamping head and a rocker arm, the front and rear ends of the bracket are respectively provided with a front positioning notch and a rear positioning notch, the lower end of the pressing plate is pressed backwards, the lever arm pushes up one end of the rocker arm away from the rocker, the rocker rotates and lifts the clamping head, and the clamping head can be alternately lifted from the front positioning notch and the rear positioning notch, so that the layer shelf can be moved and fixed on the bracket, and the operation method is simple and easy to operate.

Description

Technical Field

[0001] The invention relates to the technical field of storage devices, and in particular to a telescopic shelf. Background Art

[0002] Shelves or display racks are used to store various items and are suitable for exhibition halls, shopping malls and other occasions. In order to increase the number of items stored, multi-layer racks are generally set up. In order to facilitate the storage and retrieval of items, the racks are generally set to be slidable, that is, a telescopic shelf structure. At present, in order to achieve the telescopic and fixed shelves, a simple buckle structure is set up. Either the operating end of the buckle structure is set at the rear end (inner end) of the shelf, which is not convenient for reaching out and requires a large force to operate, or the buckle structure is exposed and has low reliability. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a telescopic shelf, which is easy to operate and has high reliability.

[0004] A telescopic shelf according to an embodiment of the present invention comprises a frame body, a plurality of brackets, a plurality of shelves and a plurality of locking mechanisms; the heights of the plurality of brackets can be adjusted and arranged on the frame body; the plurality of shelves are arranged on the plurality of brackets through a front and rear sliding mechanism, so that the shelves can be telescoped in the front and rear directions on the brackets; the shelves are positioned at the front and rear positions on the brackets through the locking mechanism, and the locking mechanism comprises a pressing plate, a rocker and an elastic reset member, the upper end of the pressing plate can be rotatably connected to the front end of the shelf, the pressing plate can be rotated around the left and right directions, the middle section or the lower end of the pressing plate is provided with a lever arm, the rocker can be rotatably arranged below the shelf, the front and rear ends of the rocker are respectively provided with a clamp and a rocker arm, The clamping head and the rocker arm are parallel to each other and are perpendicular to the rocker arm, and the end of the rocker arm away from the rocker arm is above the rocker arm, and the front and rear ends of the bracket are respectively provided with a front positioning notch and a rear positioning notch, and the lower end of the pressing plate is pressed backward, and the pushing arm pushes up the end of the rocker arm away from the rocker arm, and the rocker arm rotates and lifts the clamping head, and the clamping head can be alternately lifted from the front positioning notch and the rear positioning notch to enable the shelf to move on the bracket, and the elastic reset member is arranged between the shelf and the pressing plate, and the elastic reset member is used to drive the lower end of the pressing plate to reset, and the clamping head can be alternately clamped into the front positioning notch and the rear positioning notch to fix the position of the shelf on the bracket.

[0005] At least the following beneficial effects are provided: when the shelf needs to be extended forward, the lower end of the pressing plate is pressed backward, the clamp head is lifted from the rear positioning notch, the shelf is pulled forward, the shelf and the rocker move forward until the clamp head is above the front positioning notch, the pressing plate is released, and the clamp head is clamped into the front positioning notch; when the shelf needs to be restored to the retracted state, the lower end of the pressing plate is pressed backward, the clamp head is lifted from the front positioning notch, the shelf is pushed backward, the shelf and the rocker move backward until the clamp head is above the rear positioning notch, the pressing plate is released, and the clamp head is clamped into the rear positioning notch again. The above operation can be easily performed with one hand, the thumb of the hand is buckled on the shelf, the other four fingers of the hand are pressed backward on the lower end of the front side of the pressing plate, the other four fingers of the hand are pressed backward on the lower end of the pressing plate, the lower end of the pressing plate carries the lever arm and swings backward, at this time the whole hand pulls forward or pushes the shelf backward, the operation method is simple and easy to operate. The operation method is fixed to avoid pulling the shelf due to accidental operation.

[0006] According to some embodiments of the present invention, the shelf is connected to a limit plate extending to the bottom of the shelf, the limit plate is provided with a limit slot, and the lever arm is provided with a limit column extending into the limit slot to limit the rotation range of the pressing plate.

[0007] According to some embodiments of the present invention, a hook block is provided at the front end of the lever arm, and the two side surfaces of the hook block face left and right directions respectively. The front end of the hook block has an upward hook portion, and a notch is formed between the lever arm and the hook block. One end of the rocker arm away from the rocker rod is inserted into the notch, and an adjustment plate that can rotate around the left and right directions is provided on the lever arm, one end of the adjustment plate can support the rocker arm inserted into the notch, and one end of the adjustment plate can adjust the initial position of the rocker arm.

[0008] According to some embodiments of the present invention, an advertising information board is provided on the front side of the pressing plate.

[0009] According to some embodiments of the present invention, the lower surface of the front end of the shelf is connected to the upper end surface of the pressing plate through a hinge, the elastic reset member is a torsion spring, the elastic reset member is sleeved on the axis of the hinge, and the elastic reset member drives the lower end of the pressing plate to face.

[0010] According to some embodiments of the present invention, the lower surface of the shelf is provided with a front support plate and a rear support plate along the front-to-back direction, and the front support plate and the rear support plate are both provided with limiting holes axially in the front-to-back direction, and the front end and the rear end of the rocker arm are respectively passed through the limiting hole of the front support plate and the limiting hole of the rear support plate.

[0011] According to some embodiments of the present invention, the bracket includes a left side plate, a right side plate and a front connecting plate, the rear ends of the left side plate and the rear end of the right side plate are connected to the frame body via a hook mechanism, the left and right ends of the front connecting plate are respectively connected to the front end of the left side plate and the front end of the right side plate, and the front and rear ends of the left side plate and / or the right side plate are respectively provided with the front positioning notch and the rear positioning notch.

[0012] According to some embodiments of the present invention, the frame includes a front left support column, a front right support column, a rear left support column and a rear right support column distributed in a rectangular shape, the rear end of the left side panel and the rear end of the right side panel are respectively connected to the rear left support column and the rear right support column through two hook structures, and the left and right ends of the front connecting plate are respectively connected to the front left support column and the front right support column through two side bolt mechanisms.

[0013] According to some embodiments of the present invention, the front left support column and the front right support column are each provided with a plurality of sockets distributed in the up-and-down directions, the side bolt mechanism comprises a mounting block and a latch, the mounting block is connected to the front connecting plate, the left and right ends of the mounting block are each provided with an ear plate, the two ear plates are each provided with a through hole, the axial direction of the through hole is the left-and-right direction, one end of the latch is passed through the two through holes and can be inserted into the socket to connect the front connecting plate with the front left support column / the front right support column.

[0014] According to some embodiments of the present invention, the side bolt mechanism also includes an elastic member, a convex stop is provided in the area where the pin is located between the two ear plates, and the elastic member is disposed between the convex stop and one of the ear plates, and the elastic member drives the pin toward the direction of the socket so that one end of the pin remains inserted into the socket.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0018] Figure 2 It is a schematic diagram of the structure of the bracket, shelf and locking mechanism of an embodiment of the present invention;

[0019] Figure 3 It is a schematic structural diagram of a bracket, a front-rear sliding mechanism and a side bolt mechanism according to an embodiment of the present invention;

[0020] Figure 4It is a schematic structural diagram of a shelf and a locking mechanism according to an embodiment of the present invention;

[0021] Figure 5 for Figure 4 A local enlarged schematic diagram of the middle A;

[0022] Figure 6 A schematic diagram of the structure of a locking mechanism and a hinge according to an embodiment of the present invention;

[0023] Figure 7 It is a schematic structural diagram of a bracket, a front-rear sliding mechanism and a side bolt mechanism according to an embodiment of the present invention;

[0024] Figure 8 for Figure 7 A partial enlarged schematic diagram of point B in the middle;

[0025] Figure Number:

[0026] Frame 100; front left support column 110; front right support column 120; rear left support column 130; rear right support column 140; socket 150;

[0027] Bracket 200; front positioning notch 210; rear positioning notch 220; left side plate 230; right side plate 240; front connecting plate 250; rear connecting plate 260;

[0028] Shelf 300; limiting plate 310; limiting groove 311; front support plate 320; rear support plate 330;

[0029] Front and rear sliding mechanism 400;

[0030] Locking mechanism 500; pressing plate 510; advertising information plate 511; rocker 520; clamp 521; rocker arm 522; counterweight 523; elastic reset member 530; lever arm 540; limiting column 541; hook block 542; adjustment plate 543;

[0031] Hinge 600;

[0032] Side bolt mechanism 700; mounting block 710; ear plate 711; blocking column 712; latch 720; plug-in portion 721; operating portion 722; elastic member 730; convex stop 740. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 should not be understood as a limitation on the present invention.

[0035] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] See also Figures 1 to 5 The present invention discloses a telescopic shelf, including a frame body 100, a plurality of brackets 200, a plurality of shelves 300 and a plurality of locking mechanisms 500; the heights of the plurality of brackets 200 are adjustable on the frame body 100; the plurality of shelves 300 are separately arranged on the plurality of brackets 200 through a front and rear sliding mechanism 400, so that the shelves 300 can be telescoped on the brackets 200 in a front and rear direction; the shelves 300 are positioned at front and rear positions on the brackets 200 through the locking mechanism 500.

[0038] The bracket 200 is arranged on the frame 100, and the shelf 300 is arranged on the bracket 200. The shelf 300 is used to store articles, and the frame 100 supports the bracket 200, the shelf 300, and the articles on the shelf 300. Since the height positions of all the brackets 200 on the frame 100 can be adjusted, the number of the brackets 200 and the positions of the brackets 200 on each layer can be set as needed, and then the distance between the upper and lower adjacent layers of the brackets 200 can be set according to the height of the stored articles, so that as many brackets 200 and shelves 300 as possible can be arranged on the frame 100, and the upper and lower spaces can be fully utilized to store as many articles as possible.

[0039] The front-to-back sliding mechanism 400 can move the shelf 300 on the bracket 200 in the front-to-back direction to realize the extension and retraction of the shelf 300. When the shelf 300 moves forward on the bracket 200 to a set front stop point, the shelf 300 is in an extended state. At this time, the locking mechanism 500 locks the shelf 300 and the bracket 200 together, and the shelf 300 will remain in the extended state, which is convenient for placing items on the shelf 300 or removing items from the shelf 300; when the shelf 300 moves backward on the bracket 200 to a set rear stop point, the shelf 300 is in a retracted state. At this time, the locking mechanism 500 locks the shelf 300 and the bracket 200 together, and the shelf 300 will remain in the retracted state. At this time, the shelf 300 is in a normal state for storing items.

[0040] The number of shelves 300 on the bracket 200 is equal, the number of locking mechanisms 500 can be twice that of the shelves 300, the length direction of the shelves 300 on the bracket 200 is the left-right direction, the left and right ends of the bracket 200 are respectively detachably connected to the left and right ends of the frame 100, and the left and right ends of the shelves 300 are positioned on the bracket 200 through the locking mechanism 500.

[0041] See also Figure 5 and Figure 6 The locking mechanism 500 includes a pressing plate 510, a rocking arm 520 and an elastic reset member 530. The upper end of the pressing plate 510 can be rotatably connected to the front end of the shelf 300. The pressing plate 510 can rotate around the left and right directions. A lever arm 540 is provided at the middle section or the lower end of the pressing plate 510. The rocking arm 520 can be rotatably arranged below the shelf 300. The front and rear ends of the rocking arm 520 are respectively provided with a clamping head 521 and a rocking arm 522. The clamping head 521 and the rocking arm 522 are parallel to each other and are perpendicular to the rocking arm 520. The end of the rocking arm 522 away from the rocking arm 520 is above the rocking arm 520. The front and rear ends of the bracket 200 are respectively provided with a front positioning The notch 210 and the rear positioning notch 220 are used to press the lower end of the pressing plate 510 backwards, and the lever arm 540 pushes the rocking arm 522 away from one end of the rocking arm 520. The rocking arm 520 rotates and lifts the clamping head 521. The clamping head 521 can be alternately lifted from the front positioning notch 210 and the rear positioning notch 220 so that the shelf 300 can move on the bracket 200. The elastic reset member 530 is arranged between the shelf 300 and the pressing plate 510. The elastic reset member 530 is used to drive the lower end of the pressing plate 510 to reset. The clamping head 521 can be alternately clamped into the front positioning notch 210 and the rear positioning notch 220 to fix the position of the shelf 300 on the bracket 200.

[0042] The rear positioning notch 220 is at the rear stop point, and the shelf 300 is in a retracted state. At this time, the rear positioning notch 220 limits the forward and backward movement of the clamping head 521, thereby locking the rocker 520 and the shelf 300 on the bracket 200. Then, the lower end of the pressing plate 510 is pressed backward, and the pressing plate 510 swings backward. The lever arm 540 swings backward with the pressing plate 510, and the lever arm 540 pulls up one end of the rocker arm 522 away from the rocker arm 520. The rocker arm 522 drives the rocker arm 520 to rotate, and the rocker arm 520 drives the clamping head 521 to rotate, so that the clamping head 521 is lifted from the rear positioning notch 220. At this time, the rear positioning notch 220 cannot 21 forms a limit; then pull the shelf 300 forward, the shelf 300 and the rocker 520 move forward until the clamping head 521 is above the front positioning notch 210, release the pressing plate 510, and under the action of the elastic reset member 530, the lower end of the pressing plate 510 is reset, and the lever arm 540 disengages from the end of the rocker arm 522 away from the rocker arm 520. Under the action of gravity, the end of the rocker arm 522 away from the rocker arm 520 descends, and the rocker arm 520 rotates in the opposite direction, and the clamping head 521 is clamped into the front positioning notch 210. The front positioning notch 210 limits the forward and backward movement of the clamping head 521, thereby locking the rocker arm 520 and the shelf 300 on the bracket 200. At this time, the shelf 300 is at the front stop point position, and the shelf 300 is in a forward extended state.

[0043] On the contrary, when the shelf 300 needs to be restored to the retracted state, the lower end of the pressing plate 510 is pressed backwards, the clamping head 521 is lifted from the front positioning notch 210, and the shelf 300 is pushed backwards. The shelf 300 and the rocker 520 move backwards until the clamping head 521 is above the rear positioning notch 220, and the pressing plate 510 is released, and the clamping head 521 will be re-engaged in the rear positioning notch 220.

[0044] The front positioning notch 210 and the rear positioning notch 220 are provided on the upper end surface of the bracket 200. When pulling or pushing the shelf 300, the lower end of the pressing plate 510 is pressed backward manually, and the clamping head 521 will move above the bracket 200. If the lower end of the pressing plate 510 is not pressed backward manually, the clamping head 521 will slide against the upper end surface of the bracket 200.

[0045] The above operation can be easily performed with one hand. The thumb of the hand is buckled on the shelf 300, and the other four fingers of the hand are pressed backward on the lower end of the front side of the pressing plate 510. The other four fingers of the hand are pressed backward on the lower end of the pressing plate 510. The lower end of the pressing plate 510 carries the lever arm 540 and swings backward. At this time, the whole hand pulls forward or pushes backward the shelf 300. The operation method is simple and easy to operate. The operation method is fixed to avoid pulling the shelf 300 by mistake.

[0046] Of course, the thumb and the other four fingers of the hand operate in reverse, with the other four fingers of the hand buckled on the shelf 300 and the thumb of the hand pressed backwards on the lower end of the front side of the pressing plate 510.

[0047] The shelf 300 is located above the bracket 200. The shelf 300 shields the bracket 200 and the rocker 520. The pressing plate 510 shields the rocker 520 and the elastic reset member 530, so that only the pressing plate 510 is exposed in the entire locking mechanism 500, thereby improving safety and aesthetics. Compared with a hard-connected buckle structure, the pressing plate 510, the lever arm 540, the rocker 520, the clamp 521, the rocker arm 522, the front positioning notch 210, and the rear positioning notch 220 have higher structural reliability.

[0048] It can be understood that the front positioning notch 210 and the rear positioning notch 220 are both arranged on the upper end surface of the bracket 200. The upper end surface of the bracket 200 is an inclined guide surface in the front and rear areas corresponding to the front positioning notch 210, which is conducive to the positioning of the clamping head 521 into the front positioning notch 210. The upper end surface of the bracket 200 is an inclined guide surface in the front and rear areas corresponding to the rear positioning notch 220, which is conducive to the positioning of the clamping head 521 into the rear positioning notch 220.

[0049] See also Figure 6 The clamping head 521, the rocking rod 520 and the rocking arm 522 are U-shaped, and the lever arm 540 and the rocking rod 520 are at different left and right positions.

[0050] In this embodiment, the number of the brackets 200 and the number of the shelves 300 are both four, and the number of the locking mechanisms 500 is also four. The number of the pressing plate 510 of the locking mechanism 500 is one, and the left and right ends of the pressing plate 510 are each provided with a lever arm 540, the number of the rocking rod 520 is two, and the two rocking rods 520 are distributed on the left and right sides below the shelf 300, the front end and the rear end of the left end of the bracket 200 are respectively provided with a front positioning notch 210 and a rear positioning notch 220, the front end of the right end of the bracket 200 and the rear end of the right end of the bracket 200 are also respectively provided with a front positioning notch 210 and a rear positioning notch 220, the left lever arm 540 is arranged correspondingly to the left rocking rod 520, the clamping head 521 of the left rocking rod 520 is arranged correspondingly to the front positioning notch 210 on the left and the rear positioning notch 220 on the left, the right lever arm 540 is arranged correspondingly to the right rocking rod 520, the clamping head 521 of the right rocking rod 520 is arranged correspondingly to the front positioning notch 210 on the right and the rear positioning notch 220 on the right, and the same pressing plate 510 is used to drive the two clamping heads 521.

[0051] See also Figure 5In some embodiments, the shelf 300 is connected to a limit plate 310 extending to the bottom of the shelf 300, and a limit slot 311 is provided on the limit plate 310. The lever arm 540 is provided with a limit column 541 extending into the limit slot 311. The limit column 541 can only move within the limit slot 311, so that the limit plate 310 plays a role in limiting the rotation range of the pressing plate 510, which can prevent the height of the end of the rocker arm 522 away from the rocker 520 from being too high. When the lower end of the pressing plate 510 is pulled backward, the travel aisle of the lower end of the pressing plate 510 swinging downward and forward can also be avoided.

[0052] The setting of the limiting plate 310 and the limiting groove 311 can ensure that when the lever arm 540 swings, the lever arm 540 can drive the clamping head 521 to be completely clamped into the front positioning notch 210 / rear positioning notch 220 and lifted to a level higher than the front positioning notch 210 / rear positioning notch 220.

[0053] The limiting groove 311 is arc-shaped, and the arc is centered on the rotation axis of the pressing plate 510. The lever arm 540 is U-shaped, and the lever arm 540 includes two side walls, and the limiting column 541 is arranged on one side wall. The limiting column 541 is a screw or a bolt, and one end of the screw or the bolt is threadedly connected to a side wall. When the limiting groove 311 does not penetrate the left and right sides of the limiting plate 310, the other end of the screw or the bolt extends into the limiting groove 311; and when the limiting groove 311 penetrates the left and right sides of the limiting plate 310, the other end of the screw or the bolt is penetrated into the limiting groove 311.

[0054] It can be imagined that there are two limit plates 310, which are connected to the left and right ends of the lower surface of the shelf 300, and are parallel to each other and vertically arranged. Limit grooves 311 are provided on the two limit plates 310, and the two limit grooves 311 are coaxially arranged. The axial directions of the two limit grooves 311 and the screws are all left and right directions.

[0055] See also Figure 5 and Figure 6 In some of the embodiments, a hook block 542 is provided at the front end of the lever arm 540, and the two side surfaces of the hook block 542 face left and right directions respectively. The front end of the hook block 542 has an upward hook portion, and a notch is formed between the lever arm 540 and the hook block 542. The end of the rocker arm 522 away from the rocker 520 is inserted into the notch. When the lever arm 540 swings backward, the inner wall of the notch acts as a limit to the rocker arm 522, preventing the rocker arm 522 from escaping from the notch, thereby ensuring that the lever arm 540 and the hook block 542 can reach the rocker arm 522.

[0056] The lever arm 540 is provided with an adjustment plate 543 that can rotate in the left and right directions. One end of the adjustment plate 543 can lift the rocker arm 522 that is inserted into the notch groove, and one end of the adjustment plate 543 can adjust the initial position of the rocker arm 522. By rotating and adjusting the position of the adjustment plate 543, one end of the adjustment plate 543 can be made to just butt against the lower surface of the rocker arm 522, so that when the lever arm 540 just starts to swing, the lever arm 540 can lift the rocker arm 522 through the adjustment plate 543, avoiding the need for the pressing plate 510 and the lever arm 540 to swing a certain angle before the rocker arm 522 can be lifted, thereby avoiding the idle travel of the pressing plate 510 and the lever arm 540.

[0057] Moreover, during the initial installation, the inner wall of the notch groove does not abut against the rocker arm 522. When the pressing plate 510 is pressed, the left and right clamping heads 521 are not lifted up from the front positioning notch 210 / rear positioning notch 220 synchronously (disengaged from the front positioning notch 210 / rear positioning notch 220), or the clamping head 521 on one side is not completely lifted up to the top of the front positioning notch 210 / rear positioning notch 220 (the clamping head 521 is stuck in the front positioning notch 210 / rear positioning notch 220), and the layer plate 300 cannot be extended or retracted. At this time, it is necessary to adjust the height of one end of the adjustment plate 543 on the corresponding side so that the two clamping heads 521 can be synchronously disengaged from the front positioning notch 210 / rear positioning notch 220.

[0058] In addition, after a long period of use, the left and right adjustment plates 543 may wear out asynchronously, resulting in the clamping head 521 on one side not being completely separated from the front positioning notch 210 / rear positioning notch 220 at the same time. At this time, it is necessary to adjust the height of one end of the adjustment plate 543 accordingly to ensure that the clamping heads 521 on the left and right sides are synchronously and completely separated from the front positioning notch 210 / rear positioning notch 220.

[0059] The adjusting plate 543 serves as a backup. Whenever it is found that the clamping head 521 is stuck in the front positioning notch 210 / the rear positioning notch 220 , the problem can be solved by adjusting the adjusting plate 543 .

[0060] It can be understood that the hook block 542 is disposed on the other side wall of the limiting column 541. The adjusting plate 543 is connected to the hook block 542 or the lever arm 540 through a fastener, and the axial direction of the fastener is the left-right direction. When the fastener is loosened, the adjusting plate 543 can rotate on the hook block 542 or the lever arm 540 in the left-right direction, so that one end of the adjusting plate 543 swings up or down.

[0061] The fasteners may be bolts and nuts that fit together.

[0062] In some embodiments, an advertisement information board 511 is provided on the front side of the pressing plate 510. The advertisement information board 511 is located in front of the pressing plate 510 and is used to display advertisement information, making full use of the pressing plate 510. The pressing plate 510 is pressed by pressing the advertisement information board 511.

[0063] The advertising information board 511 and the pressing plate 510 are connected in a detachable manner, so that the advertising information board 511 can be replaced quickly and conveniently, that is, it is convenient to replace different advertising information.

[0064] See also Figures 4 to 6 In some embodiments, the lower surface of the front end of the shelf 300 is connected to the upper end surface of the pressing plate 510 through the hinge 600, and the shelf 300 supports or pulls the pressing plate 510 to roughly limit the position of the pressing plate 510, so that the pressing plate 510 can rotate on the shelf 300. The elastic reset member 530 is a torsion spring, and the elastic reset member 530 is sleeved on the axis of the hinge 600. The axis of the hinge 600 activates the limit elastic reset member 530, and the elastic reset member 530 drives the lower end of the pressing plate 510 to face.

[0065] It is understandable that the number of hinges 600 and elastic reset members 530 is multiple and equal. The two ends of the elastic reset member 530 can be respectively against the two connecting parts of the hinge 600, and the two connecting parts are respectively connected to the lower surface of the shelf 300 and the rear side of the pressing plate 510, or the two ends of the elastic reset member 530 can be respectively against the lower surface of the shelf 300 and the rear side of the pressing plate 510. The hinge 600 and the elastic reset member 530 have a compact structure and a small volume.

[0066] See also Figure 5 and Figure 6 In some embodiments, the lower surface of the shelf 300 is provided with a front support plate 320 and a rear support plate 330 along the front-to-back direction, and the front support plate 320 and the rear support plate 330 are provided with a limiting hole with an axial direction in the front-to-back direction, and the front end and the rear end of the rocker 520 are respectively penetrated through the limiting hole of the front support plate 320 and the limiting hole of the rear support plate 330. The front support plate 320 and the rear support plate 330 play the role of stably connecting the rocker 520 to the shelf 300, so that the rocker 520 can move forward and backward with the shelf 300, and can also rotate around its own axis.

[0067] The front support plate 320 and the rear support plate 330 have the same structure. The front support plate 320 includes a first horizontal portion, a vertical portion and a second horizontal portion connected in sequence. The first horizontal portion is higher than the second horizontal portion. The first horizontal portion is connected to the lower surface of the shelf 300. An opening is provided at the lower end of the vertical portion. A detachable stopper is provided on the second horizontal portion. The stopper closes the opening. A limiting hole is formed between the side wall of the opening and the stopper. The rocker 520 can be inserted into the limiting hole by removing the stopper. The stopper is then connected to the second horizontal portion to complete the connection between the rocker 520 and the front support plate 320. When the rocker 520 needs to be removed, the stopper can be removed from the second horizontal portion to remove the rocker 520 from the front support plate 320.

[0068] Specifically, a hanging hole is provided at one end of the second horizontal part, a hook is provided at one end of the stopper, the hook passes through the hanging hole from bottom to top and hooks on one end of the second horizontal part, and the other end of the stopper is connected to the other end of the second horizontal part by a screw.

[0069] See also Figure 6 In some embodiments, a swing arm is provided at the rear end of the rocker 520, and the rocker arm 522, the rocker 520 and the swing arm are in a U shape. One end of the clamp 521 is connected to the end of the swing arm away from the rocker 520, and a counterweight 523 is connected to one end of the clamp 521. The other end of the clamp 521 is used to clamp into the front positioning notch 210 and the rear positioning notch 220. The counterweight 523 can make the rocker 520 reverse faster. When the pressing plate 510 is released, the rocker 520 can be reversed in time, so that the clamp 521 can be clamped into the front positioning notch 210 / rear positioning notch 220 in time.

[0070] See also Figure 3 and Figure 7 In some embodiments, the bracket 200 includes a left side plate 230, a right side plate 240 and a front connecting plate 250. The rear ends of the left side plate 230 and the rear ends of the right side plate 240 are connected to the frame 100 through a hook mechanism, so that the frame 100 supports the left side plate 230 and the right side plate 240. The left and right ends of the front connecting plate 250 are respectively connected to the front ends of the left side plate 230 and the right side plate 240. The front and rear ends of the left side plate 230 and / or the right side plate 240 are respectively provided with a front positioning notch 210 and a rear positioning notch 220.

[0071] The bracket 200 also includes a rear connecting plate 260, the left and right ends of which are respectively connected to the rear ends of the left plate 230 and the right plate 240. The left plate 230, the rear connecting plate 260, the right plate 240 and the front connecting plate 250 are connected to form a frame to ensure the structural strength and stability of the bracket 200.

[0072] See also Figure 1In some embodiments, the frame 100 includes a front left support column 110, a front right support column 120, a rear left support column 130 and a rear right support column 140 distributed in a rectangular shape, the rear end of the left plate 230 and the rear end of the right plate 240 are respectively connected to the rear left support column 130 and the rear right support column 140 through two hook structures, and the left and right ends of the front connecting plate 250 are respectively connected to the front left support column 110 and the front right support column 120 through two side bolt mechanisms 700.

[0073] The rear left support column 130 and the rear right support column 140 support the rear ends of the left plate 230 and the rear ends of the right plate 240 respectively, and the front left support column 110 and the front right support column 120 support the left and right ends of the front connecting plate 250 respectively through two side bolt mechanisms 700, and the left and right ends of the front connecting plate 250 support the front ends of the left plate 230 and the right plate 240 respectively, so that the four corners of the bracket 200 can be supported, thereby improving the bearing capacity of the bracket 200 and the shelf 300, reducing the force and torque of the hook structure, and avoiding deformation and damage of the hook structure.

[0074] See also Figure 1 , Figure 7 and Figure 8 In some embodiments, the front left support column 110 and the front right support column 120 are each provided with a plurality of sockets 150 distributed in the up-down direction, and the side bolt mechanism 700 includes a mounting block 710 and a latch 720, the mounting block 710 is connected to the front connecting plate 250, and ear plates 711 are provided at both left and right ends of the mounting block 710, and both ear plates 711 are provided with through holes, and the axial direction of the through holes is the left-right direction, and one end of the latch 720 is passed through the two through holes to realize the connection between the latch 720 and the mounting block 710.

[0075] The latch 720 is pushed to move along its axial direction, and the latch 720 can be inserted into or out of the insertion hole 150. When the latch 720 is inserted into the insertion hole 150, the front connecting plate 250 is connected with the front left support column 110 / front right support column 120. The front left support column 110 and the front right support column 120 can both support the latch 720, thereby supporting the front end of the left plate 230 and the front end of the right plate 240.

[0076] See also Figure 8 In some embodiments, the side bolt mechanism 700 further includes an elastic member 730, a convex stop 740 is provided in the area where the latch 720 is located between the two ear plates 711, and the elastic member 730 is provided between the convex stop 740 and one of the ear plates 711. The elastic member 730 drives the latch 720 toward the direction of the socket 150. In a natural state, one end of the latch 720 remains inserted into the socket 150, thereby preventing the latch 720 from accidentally exiting the socket 150, thereby preventing the front end of the left plate 230 and the front end of the right plate 240 from accidentally losing support.

[0077] It can be understood that the pin 720 includes a connected plug-in portion 721 and an operating portion 722, the plug-in portion 721 and the operating portion 722 are L-shaped, the plug-in portion 721 passes through two through holes, and the mounting block 710 is provided with two blocking columns 712 in the area between the two ear plates 711, the two blocking columns 712 are distributed front and back and both extend downward, the plug-in portion 721 is passed through the two blocking columns 712, the number of the convex blocks 740 is two, the two convex blocks 740 are coaxially arranged, an L-shaped groove is provided on the front connecting plate 250, the notch of the L-shaped groove faces downward, and a blocking hook portion is provided on the side wall of the L-shaped groove close to the plug-in portion 721, and the operating portion 722 can be hung on the blocking hook portion.

[0078] When the operation portion 722 is hung on the blocking hook portion, the plug-in portion 721 is inserted into the insertion hole 150, and the two protruding stops 740 are located between the blocking column 712 and the other ear plate 711; when the operation portion 722 is not hung on the blocking hook portion, the operation portion 722 can be driven to move in the direction away from the insertion hole 150, and the two protruding stops 740 will respectively abut against the two blocking columns 712, resulting in the operation portion 722 and the plug-in portion 721 being unable to continue to move in the direction away from the insertion hole 150. The operation portion 722 needs to be swung downward, and the two protruding stops 740 can pass through the gap between the two blocking columns 712, thereby continuing to drive the operation portion 722 and the plug-in portion 721 to move in the direction away from the insertion hole 150, and the plug-in portion 721 withdraws from the insertion hole 150, entering to unlock the side bolt mechanism 700; the operation portion 722 can be operated in reverse to insert the plug-in portion 721 into the insertion hole 150, thereby locking the side bolt mechanism 700.

[0079] The arrangement of the L-shaped groove, the blocking hook portion, the two blocking columns 712 and the two convex blocks 740 enables the side bolt mechanism 700 to have an anti-foolproof function. The unlocking and locking of the side bolt mechanism 700 both require the rotation of the operating portion 722 .

[0080] Specifically, the elastic member 730 is a spring, and the elastic member 730 is sleeved on the plug-in portion 721 . Two ends of the elastic member 730 respectively abut against the convex stop 740 and one of the ear plates 711 .

[0081] The front-rear sliding mechanism 400 is a slide rail. There are two front-rear sliding mechanisms 400. The left side plate 230 is connected to the left end of the shelf 300 through one front-rear sliding mechanism 400, and the right side plate 240 is connected to the right end of the shelf 300 through another front-rear sliding mechanism 400.

[0082] Specifically, the limiting plate 310 at the left end of the shelf 300 is connected to the left side plate 230 via a front-to-back sliding mechanism 400 , and the limiting plate 310 at the right end of the shelf 300 is connected to the right side plate 240 via another front-to-back sliding mechanism 400 .

[0083] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above 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.

[0084] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A telescopic shelf, characterized in that: include: Frame (100); a plurality of brackets (200), wherein the heights of the plurality of brackets (200) are adjustable and arranged on the frame (100); A plurality of shelves (300), wherein the plurality of shelves (300) are separately arranged on the plurality of brackets (200) via a front-to-back sliding mechanism (400), so that the shelves (300) can be extended and retracted along the front-to-back direction on the brackets (200); A plurality of locking mechanisms (500), wherein the shelf (300) is positioned at a front-rear position on the bracket (200) by means of the locking mechanisms (500), wherein the locking mechanisms (500) comprise a pressing plate (510), a rocker (520) and an elastic reset member (530), wherein the upper end of the pressing plate (510) is rotatably connected to the front end of the shelf (300), and the pressing plate (510) is rotatable in a left-right direction. A lever arm (540) is provided at the middle section or the lower end, the rocker (520) is rotatably provided below the shelf (300), a clamping head (521) and a rocker arm (522) are provided at the front and rear ends of the rocker (520), the clamping head (521) and the rocker arm (522) are parallel to each other and perpendicular to the rocker (520), one end of the rocker arm (522) away from the rocker arm (520) is located above the rocker arm (520), and the bracket The front end and rear end of the pressing plate (510) are respectively provided with a front positioning notch (210) and a rear positioning notch (220). When the lower end of the pressing plate (510) is pressed backward, the lever arm (540) lifts one end of the rocker arm (522) away from the rocker (520). The rocker (520) rotates and lifts the clamping head (521). The clamping head (521) can be lifted alternately from the front positioning notch (210) and the rear positioning notch (220) so that the The shelf (300) is movable on the support (200); the elastic reset member (530) is disposed between the shelf (300) and the pressing plate (510); the elastic reset member (530) is used to drive the lower end of the pressing plate (510) to reset; and the clamping head (521) is capable of alternately clamping into the front positioning notch (210) and the rear positioning notch (220) to fix the position of the shelf (300) on the support (200).

2. The telescopic shelf according to claim 1, characterized in that: The shelf (300) is connected to a limiting plate (310) extending below the shelf (300), the limiting plate (310) is provided with a limiting groove (311), and the lever arm (540) is provided with a limiting column (541) extending into the limiting groove (311) to limit the rotation range of the pressing plate (510).

3. A telescopic shelf according to claim 1 or 2, characterized in that: A hook block (542) is provided at the front end of the lever arm (540), and two side surfaces of the hook block (542) face left and right directions respectively. The front end of the hook block (542) has an upwardly facing hook portion. A notch groove is formed between the lever arm (540) and the hook block (542), and one end of the rocker arm (522) away from the rocker bar (520) is inserted into the notch groove. An adjustment plate (543) capable of rotating in left and right directions is provided on the lever arm (540), and one end of the adjustment plate (543) can lift the rocker arm (522) inserted into the notch groove, and one end of the adjustment plate (543) can adjust the initial position of the rocker arm (522).

4. The telescopic shelf according to claim 1, characterized in that: An advertising information board (511) is provided on the front side of the pressing plate (510).

5. The telescopic shelf according to claim 1, characterized in that: The lower surface of the front end of the shelf (300) is connected to the upper end surface of the pressing plate (510) via a hinge (600); the elastic return member (530) is a torsion spring; and the elastic return member (530) is sleeved on the axis of the hinge (600).

6. The telescopic shelf according to claim 1, characterized in that: The lower surface of the shelf (300) is provided with a front support plate (320) and a rear support plate (330) along the front-to-back direction, and the front support plate (320) and the rear support plate (330) are both provided with limiting holes with the axial direction in the front-to-back direction, and the front end and the rear end of the rocker (520) are respectively penetrated through the limiting hole of the front support plate (320) and the limiting hole of the rear support plate (330).

7. The telescopic shelf according to claim 1, characterized in that: The bracket (200) comprises a left side plate (230), a right side plate (240) and a front connecting plate (250); the rear ends of the left side plate (230) and the rear ends of the right side plate (240) are connected to the frame body (100) via a hook mechanism; the left and right ends of the front connecting plate (250) are respectively connected to the front ends of the left side plate (230) and the front ends of the right side plate (240); the front positioning notch (210) and the rear positioning notch (220) are respectively provided at the front and rear ends of the left side plate (230) and / or the right side plate (240).

8. The telescopic shelf according to claim 7, characterized in that: The frame (100) comprises a front left support column (110), a front right support column (120), a rear left support column (130) and a rear right support column (140) which are arranged in a rectangular shape; the rear end of the left side plate (230) and the rear end of the right side plate (240) are respectively connected to the rear left support column (130) and the rear right support column (140) via two hook structures; the left and right ends of the front connecting plate (250) are respectively connected to the front left support column (110) and the front right support column (120) via two side bolt mechanisms (700).

9. The telescopic shelf according to claim 8, characterized in that: The front left support column (110) and the front right support column (120) are both provided with a plurality of sockets (150) distributed in the up-down direction. The side bolt mechanism (700) comprises a mounting block (710) and a latch (720). The mounting block (710) is connected to the front connecting plate (250). The left and right ends of the mounting block (710) are both provided with ear plates (711). Both ear plates (711) are provided with through holes. The axial direction of the through holes is the left-right direction. One end of the latch (720) is passed through the two through holes and can be inserted into the socket (150) to connect the front connecting plate (250) with the front left support column (110) or the front right support column (120).

10. The telescopic shelf according to claim 9, characterized in that: The side bolt mechanism (700) further comprises an elastic member (730); a convex stop (740) is provided in the area where the latch pin (720) is located between the two ear plates (711); the elastic member (730) is arranged between the convex stop (740) and one of the ear plates (711); the elastic member (730) drives the latch pin (720) toward the insertion hole (150) so that one end of the latch pin (720) remains inserted into the insertion hole (150).

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