Lockers

Abstract

The present invention relates to a storage cabinet, which comprises a cabinet body and a movable support device, wherein the movable support device comprises a movable support wheel, a support wheel frame, a locking device, an unlocking pull rope, a wire rack and a driving device, wherein the support wheel frame is telescopically mounted on the cabinet body, the extended support wheel frame movably supports the cabinet body through the support wheel, the support wheel frame is locked in a recovery position through the locking device, the unlocking pull rope is suspended in the cabinet body through the wire rack and is located behind the drawer, the telescopic end of the unlocking pull rope is telescopically controlled to control the locking device to be in a lockable state or an unlocked state, and a top wire member is provided at the rear of the drawer, which is used to change the bending degree of the unlocking pull rope by pressing on the suspended unlocking pull rope, thereby manipulating the telescopic end of the unlocking pull rope. The beneficial effects are: the structure is safe and reliable, and it is economical and practical. When any drawer of the storage cabinet is opened and the telescopic end of the unlocking pull rope is extended to a preset length, the support wheel frame automatically pops out, thereby achieving the purpose of preventing the storage cabinet from tilting.

Description

Technical Field

[0001] The invention relates to a storage cabinet. Background Art

[0002] Lockers, especially tool boxes in workshops in the machinery industry, are generally used to store heavy tools, such as hammers, wrenches, pliers, etc. During use, workers, due to inattention or negligence, do not return the opened drawers, which may result in multiple drawers being opened at the same time. As the tools in the drawers are generally heavy and more drawers are opened, the tool box may easily tip over, posing a hazard to the workers' personal safety and the working environment.

[0003] To solve this technical problem, an existing solution is to limit the number of drawers that can be opened, such as Chinese patent CN210714195U, which discloses a slide rail interlocking mechanism that prevents multiple layers of drawers from being opened at the same time. The Chinese patent discloses limiting the number of drawers that can be opened through a slide rail interlocking mechanism. When one drawer is pulled out, other drawers cannot be pulled out, thereby avoiding pulling out multiple drawers at the same time and ensuring the center of gravity of the locker, so that the drawers will not tip over and cause damage or injury when all drawers are pulled out.

[0004] The disadvantages of the prior art are that only one drawer can be opened at a time, which makes it inconvenient to take out items, and the slide rail interlocking mechanism has a complex structure, high cost and high failure rate.

[0005] Another existing solution is that the support point at the bottom of the cabinet changes with the center of gravity of the cabinet, such as Chinese patent CN203919017U anti-dumping tool box. The Chinese patent discloses that fixed rollers and movable rollers are set at the bottom of the cabinet as fixed support points and movable support points. The movable roller as the movable support point is installed on a linkage device, and the linkage device moves synchronously with the drawer to prevent the cabinet from tipping over due to the deviation of the center of gravity of the cabinet caused by the movement of the drawer.

[0006] The disadvantage of the prior art is that it is laborious to open the drawers, and the linkage device will open synchronously when any drawer is opened, and the fixed roller can be retracted only after all the drawers are closed. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a storage cabinet, wherein movable supporting wheels can be unlocked as needed after a drawer is opened to prevent the cabinet from tipping over.

[0008] The technical solution adopted by the present invention to solve its technical problems is: a storage cabinet comprises a cabinet body and a movable supporting device for preventing the cabinet body from tipping over, the cabinet body has a plurality of drawers, the movable supporting device comprises a movable supporting wheel, a supporting wheel frame, a locking device, an unlocking pull rope, a wire rack and a driving device, the supporting wheel frame is telescopically mounted on the cabinet body, the movable supporting wheel is mounted on the supporting wheel frame, the extended supporting wheel frame movably supports the cabinet body through the supporting wheel, the extending direction of the supporting wheel frame is consistent with the opening direction of the drawer, the driving device is mounted on the cabinet body, and is used to drive the supporting wheel frame to extend, the supporting wheel frame is locked in the recovery position through the locking device, the wire rack is mounted on the cabinet body, the unlocking pull rope is suspended in the cabinet body through the wire rack and is located at the rear of the drawer, one end of the unlocking pull rope is fixed as the fixed end, and the other end is the telescopic end, the telescopic end tightens the unlocking pull rope under the traction of the tensioning force, and at the same time the telescopic end of the unlocking pull rope cooperates with the locking device, and the locking device is controlled to be in a lockable state or unlocked by the telescopic end of the unlocking pull rope. In the locked state, the tensioning force of the tightened unlocking rope comes from the locking device or from a separate tensioner. A top wire piece is provided at the rear of the drawer, which is used to change the bending degree of the unlocking rope by pressing on the overhead unlocking rope, thereby manipulating the extension and retraction of the telescopic end of the unlocking rope. When the drawers on the cabinet are in the closed state, the top wire piece drives the unlocking rope to overcome the tensioning force and to be at the maximum bending degree, and the telescopic end of the unlocking rope is retracted to the initial position, and the telescopic end of the unlocking rope controls the locking device to be in a lockable state, so that the locking device can lock the supporting wheel frame in the recovery position; when the drawer is opened, the top wire piece gradually separates from the unlocking rope, and the bending degree of the unlocking rope gradually decreases under the action of the tensioning force, and the telescopic end of the unlocking rope gradually extends. When the telescopic end of the unlocking rope extends to a preset length, the telescopic end of the unlocking rope controls the locking device to be in an unlocked state, and the locking device unlocks the supporting wheel frame in the recovery position, so that the supporting wheel frame extends under the drive of the driving device, and the cabinet is movably supported by the support wheel.

[0009] It is further defined that the driving device is a force storage type driving device, which stores force under the drive of the supporting wheel frame when the supporting wheel frame is recovered, and releases the stored force to drive the supporting wheel frame to extend when the supporting wheel frame is unlocked.

[0010] It is further defined that the force storage type driving device is specifically a driving spring, one end of which is mounted on the cabinet body, and the other end is driven and cooperated with the supporting wheel frame, and the supporting wheel frame drives the driving spring to elastically deform and store force when it is recovered.

[0011] It is further defined that it also includes a supporting wheel frame recovery device, which includes a foot pedal mechanism, a recovery pull rope and a recovery lever. The foot pedal mechanism is installed on the cabinet body, and the recovery lever is installed on the cabinet body through a fulcrum shaft. The long arm end of the recovery lever is driven and cooperated with the supporting wheel frame, and the foot pedal mechanism is driven and cooperated with the short arm end of the recovery lever through the pull rope. The power storage drive device is also driven and cooperated with the short arm end of the recovery lever. When the locking device unlocks the supporting wheel frame, the power storage drive device drives the supporting wheel frame to extend through the recovery lever using the lever principle. When the supporting wheel frame needs to be recovered, the foot pedal mechanism drives the recovery lever through the recovery pull rope. The recovery lever accumulates power for the power storage drive device while driving the supporting wheel frame to retract until the support wheel frame is locked by the locking device.

[0012] It is further defined that the pedal mechanism includes a pedal and a rotating shaft, and the pedal is mounted on the cabinet through the rotating shaft.

[0013] It is further defined that the supporting wheel frame is telescopically mounted on the bottom of the cabinet body through a bearing seat, and two front and rear toggle fulcrums are provided on the supporting wheel frame for forming a toggle opening for inserting the recovery lever, and the long arm end of the recovery lever is inserted into the toggle opening to achieve driving cooperation between the long arm end of the recovery lever and the supporting wheel frame, and the overhead unlocking rope is divided into multiple overhead sections by the overhead parts, and each drawer corresponds to an overhead section. A drawer lock is provided between the drawer and the cabinet body for positioning the drawer in a closed position.

[0014] It is further defined that the toggle fulcrum is a pulley fixed on a supporting wheel frame, and the drawer lock includes a drawer magnet installed on the drawer and a cabinet magnet installed on the cabinet body. When the drawer is pushed to a closed position, the drawer magnet and the cabinet magnet are attracted, and the drawer is positioned in the closed position by the magnetic force of the drawer magnet and the cabinet magnet. The bottom of the cabinet body also has a fixed support point for supporting the cabinet body.

[0015] It is further defined that the locking device includes a male buckle and a female buckle, the male buckle is arranged on the supporting wheel frame, and the female buckle is swingably installed on the cabinet body. The female buckle and the cabinet body are reset by a female buckle reset spring, and the telescopic end of the unlocking pull rope is connected to the female buckle, and the female buckle reset spring provides the tensioning force of the unlocking pull rope through the female buckle. When the drawers on the cabinet body are in a closed state, the telescopic end of the unlocking pull rope drives the female buckle to overcome the spring force of the female buckle reset spring and swing to a lockable position. When the supporting wheel frame is retracted to the retracted position, the male buckle and the female buckle are buckled to lock the supporting wheel frame; when the drawer is opened, the telescopic end of the unlocking pull rope gradually extends, and the female buckle reset spring drives the female buckle to swing and reset, and when the telescopic end of the unlocking pull rope is extended to a preset length , the female buckle is swung and reset to the unlocked position, the female buckle and the male buckle are separated, the supporting wheel frame is unlocked, the buckle head of the female buckle is swung to give way and is set on the female buckle body, and is reset by the buckle head spring. When the buckle head of the male buckle is buckled into the buckle head of the female buckle, the buckle head of the female buckle is pushed by the buckle head of the male buckle to give way and after the buckle head of the male buckle is buckled into place, it is swung and reset under the action of the buckle head spring, thereby realizing the buckling of the male buckle and the female buckle; or the buckle head of the male buckle is swung and reset and is set on the male buckle body, and is reset by the buckle head spring. When the buckle head of the female buckle is buckled into the buckle head of the male buckle, the buckle head of the male buckle is pushed by the buckle head of the female buckle to give way and after the buckle head of the female buckle is buckled into place, it is swung and reset under the action of the buckle head spring, thereby realizing the buckling of the male buckle and the female buckle.

[0016] It is further defined that the top line member is a roller with a V-shaped groove.

[0017] The beneficial effects of the present invention are: the structure is safe and reliable, and the cost is economical. The locker supports the locker body movably through the telescopic unlocking movable support device of the telescopic end of the unlocking pull rope. After opening any drawer, the telescopic end of the unlocking pull rope gradually extends. When the telescopic end of the unlocking pull rope extends to a preset length, the support wheel frame automatically pops out to prevent the locker from tilting. After the drawer is closed, when the support wheel frame is to be retracted, the support wheel frame can be easily retracted by lightly stepping on the pedal mechanism of the support wheel frame retracting device on the side. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0019] Figure 1 A schematic diagram of a recovery support wheel frame of the support wheel frame recovery device of the present invention;

[0020] Figure 2 Schematic diagram of the supporting wheel frame unlocked by the driving spring of the present invention;

[0021] Figure 3 A schematic diagram of a recovery support wheel frame of the support wheel frame recovery device after the pedal of the present invention is installed in place;

[0022] Figure 4A schematic diagram of a recovery support wheel frame of the support wheel frame recovery device after the pedal of the present invention is installed in place;

[0023] Figure 5 A schematic diagram of the movable support unlocking principle of the locker of the present invention in a side view;

[0024] Figure 6 A schematic diagram of the movable support locking principle of the locker of the present invention in a side view;

[0025] Figure 7 It is a schematic diagram of the structure of the drawer of the present invention in a side view;

[0026] Figure 8 It is a structural schematic diagram of the drawer of the present invention in a front view;

[0027] Fig. 9 It is a schematic diagram of the structure of the storage cabinet (without showing the drawer) of the present invention in a front view.

[0028] In the figure, 1. cabinet, 2. drawer, 3. movable support wheel, 4. support wheel frame, 5. unlocking rope, 6. wire rack, 7. driving spring, 8. pedal mechanism, 8-1. pedal, 8-2. rotating shaft, 9. recovery rope, 10. recovery lever, 11. fulcrum shaft, 12. bearing seat, 13. toggle fulcrum, 14-1. drawer magnet, 14-2. cabinet magnet, 15. top wire member, 16. male buckle, 17. female buckle, 17-1. female buckle reset spring, 18. fixed support roller. DETAILED DESCRIPTION

[0029] like Figures 1 to 9 As shown, embodiment 1: a storage cabinet comprises a cabinet body 1 and a movable supporting device for preventing the cabinet body 1 from tipping over, and the cabinet body 1 has a plurality of drawers 2. The bottom of the cabinet body 1 also has a fixed supporting roller 18 as a fixed supporting point of the cabinet body itself.

[0030] The movable support device includes a movable support wheel 3, a support wheel frame 4, a locking device, an unlocking pull rope 5, a wire-hanging member 6 and a driving device. The support wheel frame 4 is telescopically mounted on the cabinet 1, and the movable support wheel 3 is mounted on the support wheel frame 4. The extended support wheel frame 4 supports the cabinet 1 movably through the support wheel. The driving device is mounted on the cabinet 1 and is used to drive the support wheel frame 4 to extend. The support wheel frame 4 is locked in the retracted position by the locking device. The wire-hanging member 6 is mounted on the cabinet 1, and the unlocking pull rope 5 is suspended in the cabinet 1 and located behind the drawer 2 through the wire-hanging member 6. One end of the unlocking pull rope 5 is fixed as a fixed end, and the other end is a telescopic end. The telescopic end tightens the unlocking pull rope 5 under the traction of the tensioning force, and at the same time, the telescopic end of the unlocking pull rope 5 cooperates with the locking device, and the locking device is controlled to be in a lockable state or an unlocked state by the telescopic end of the unlocking pull rope 5. The tensioning force of tightening the unlocking pull rope 5 comes from the locking device. A top wire member 15 is provided at the rear of the drawer 2 for changing the bending degree of the unlocking pull rope 5 by pressing on the overhead unlocking pull rope 5 , thereby manipulating the extension and retraction of the telescopic end of the unlocking pull rope 5 .

[0031] like Figure 6 As shown, when the drawers 2 on the cabinet 1 are all in the closed state, the top line member 15 drives the unlocking pull rope 5 to overcome the tension force and bend to the maximum extent, and the telescopic end of the unlocking pull rope 5 is retracted to the initial position, and the telescopic end of the unlocking pull rope 5 controls the locking device to be in a lockable state, so that the locking device can lock the supporting wheel frame 4 in the retracted position; Figure 5 As shown, when the drawer 2 is opened, the top line member 15 gradually separates from the unlocking pull rope 5, and the bending degree of the unlocking pull rope 5 gradually decreases under the action of the tension force, and the telescopic end of the unlocking pull rope 5 gradually extends. When the telescopic end of the unlocking pull rope 5 extends to a preset length, the telescopic end of the unlocking pull rope 5 controls the locking device to be in an unlocked state, and the locking device unlocks the supporting wheel frame 4 in the recovery position, so that the supporting wheel frame 4 extends out under the drive of the driving device, and the cabinet body 1 is movably supported by the supporting wheels.

[0032] The top line member 15 is a roller with a V-shaped groove. When the top line member 15 contacts the unlocking pull rope 5, the unlocking pull rope 5 is inserted into the V-shaped groove of the roller with the V-shaped groove.

[0033] The driving device is a force storage type driving device, which stores force under the drive of the supporting wheel frame 4 when the supporting wheel frame 4 is being recovered, and releases the stored force to drive the supporting wheel frame 4 to extend when the supporting wheel frame is unlocked. The force storage type driving device is specifically a driving spring 7, one end of which is mounted on the cabinet 1, and the other end is driven by the supporting wheel frame 4. When the supporting wheel frame 4 is recovered, the driving spring 7 is elastically deformed to store force. In the attached drawings, the driving spring 7 is a tension spring.

[0034] The locker also includes a support wheel frame recovery device, which includes a pedal mechanism 8, a recovery pull rope 9 and a recovery lever 10. The pedal mechanism 8 is installed on the cabinet body 1, and the recovery lever 10 is installed on the cabinet body 1 through a fulcrum shaft 11. The long arm end of the recovery lever 10 is driven and cooperated with the support wheel frame 4, and the pedal mechanism 8 is driven and cooperated with the short arm end of the recovery lever 10 through a pull rope. The power storage drive device is also driven and cooperated with the short arm end of the recovery lever 10. When the locking device unlocks the support wheel frame, the power storage drive device drives the support wheel frame 4 to extend through the recovery lever 10 using the lever principle. When the support wheel frame 4 needs to be recovered, the pedal mechanism 8 drives the recovery lever 10 through the recovery pull rope 9. The recovery lever 10 accumulates power for the power storage drive device while driving the support wheel frame 4 to retract until the support wheel frame 4 is locked by the locking device.

[0035] The pedal mechanism 8 includes a pedal 8 - 1 and a rotating shaft 8 - 2 , and the pedal 8 - 1 is installed on the cabinet 1 via the rotating shaft 8 - 2 .

[0036] The supporting wheel frame 4 is telescopically mounted on the bottom of the cabinet 1 through a bearing seat 12 .

[0037] The support wheel frame 4 is provided with two front and rear toggle fulcrums 13, which are used to form an toggle opening for inserting the recovery lever 10. The long arm end of the recovery lever 10 is inserted into the toggle opening to achieve driving cooperation between the long arm end of the recovery lever 10 and the support wheel frame 4. The toggle fulcrum 13 is a pulley fixed on the support wheel frame 4.

[0038] The overhead unlocking pull rope 5 is divided into a plurality of overhead sections by overhead parts, and each drawer 2 corresponds to an overhead section, as shown in 3 and 4 .

[0039] A drawer lock is provided between the drawer 2 and the cabinet 1 for positioning the drawer in a closed position. The drawer lock comprises a drawer magnet 14-1 mounted on the drawer 2 and a cabinet magnet 14-2 mounted on the cabinet 1. When the drawer 2 is pushed to the closed position, the drawer magnet 14-1 and the cabinet magnet 14-2 are attracted to each other, and the drawer 2 is positioned in the closed position by the magnetic force of the drawer magnet 14-1 and the cabinet magnet 14-2.

[0040] like Figure 5 and 6As shown, the locking device includes a male buckle 16 and a female buckle 17, the male buckle 16 is arranged on the supporting wheel frame 4, and the female buckle 17 is swingably installed on the cabinet body 1. The female buckle 17 and the cabinet body 1 are reset by a female buckle reset spring 17-1, and the telescopic end of the unlocking pull rope 5 is connected to the female buckle 17, and the female buckle reset spring 17-1 provides the tensioning force of the unlocking pull rope 5 through the female buckle 17. When the drawers 2 on the cabinet body 1 are all in the closed state, the telescopic end of the unlocking pull rope 5 drives the female buckle 17 to overcome the spring force of the female buckle reset spring 17-1 and swing to a lockable position. When the supporting wheel frame 4 is recovered to the recovery position, the male buckle 16 is buckled with the female buckle 17 to lock the supporting wheel frame 4. When the drawer 2 is opened, the telescopic end of the unlocking rope 5 is gradually extended, and the female buckle reset spring 17-1 drives the female buckle 17 to swing and reset. When the telescopic end of the unlocking rope 5 is extended to a preset length, the female buckle 17 is swung and reset to the unlocking position, and the female buckle 17 and the male buckle 16 are separated, unlocking the support wheel frame 4. The buckle head of the female buckle 17 is swingably arranged on the female buckle body and reset by the buckle head spring. When the buckle head of the male buckle 16 is buckled into the buckle head of the female buckle 17, the buckle head of the female buckle 17 swings and makes way under the push of the buckle head of the male buckle 16, and after the buckle head of the male buckle 16 is buckled into place, it swings and resets under the action of the buckle head spring, thereby realizing the buckling of the male buckle 16 and the female buckle 17.

[0041] In addition to the male and female buckle locking device of this embodiment 1, the present invention can of course also adopt locking devices of other structural forms in the prior art, as long as the locking device can be switched between a lockable state and an unlocked state under the drive of the telescopic end of the unlocking rope 5.

[0042] The unlocking pull rope 5 is vertically arranged in the cabinet body so that the distance between the unlocking pull rope and the rear of each layer of drawers is equal and the length of the top line member 15 is the same.

[0043] The working process of this embodiment 1 is as follows:

[0044] When the drawer is opened, the top wire member 15 gradually separates from the unlocking pull rope 5, and the bending degree of the unlocking pull rope 5 gradually decreases under the action of the tension force, and the telescopic end of the unlocking pull rope 5 gradually extends. When the telescopic end of the unlocking pull rope 5 extends to a preset length, the female buckle 17 swings back to the unlocking position, and the female buckle 17 and the male buckle 16 are separated, unlocking the support wheel frame 4. The driving spring 7 elastically deforms and recovers, pulling the recovery lever 10 to swing counterclockwise, and the recovery lever 10 drives the support wheel frame 4 to extend by using the lever principle, and the cabinet body 1 is movably supported by the support wheel to prevent the locker from tipping over due to the opening of the drawer.

[0045] When the opened drawer is closed, the top line member 15 moves into the cabinet 1 together with the drawer until it begins to contact the unlocking pull rope 5. After contacting the unlocking pull rope 5, the top line member 15 begins to drive the unlocking pull rope 5 to overcome the tension force and bend. The telescopic end of the unlocking pull rope 5 is gradually retracted, pulling the female buckle 17 to gradually swing to the lockable position.

[0046] When all the opened drawers are closed, the telescopic end of the unlocking pull rope 5 is retracted to the initial position, pulling the female buckle 17 to swing to the lockable position.

[0047] When the male-and-female-buckle locking device is in a lockable state, the foot is stepped on the pedal 8-1, and the pedal mechanism 8 drives the recovery lever 10 through the recovery rope 9. The recovery lever 10 accumulates power in the power storage drive device while driving the support wheel frame 4 to be retracted until the support wheel frame 4 is locked by the locking device.

[0048] Embodiment 2: In embodiment 1, the drawers of the upper and lower layers of the cabinet have the same influence on the unlocking pull cord, but the drawers of the upper and lower layers of the cabinet have different influences on the change of the center of gravity of the cabinet. The drawers of the upper layer are more likely to change the center of gravity of the cabinet. Therefore, based on embodiment 1, this embodiment 2 is designed to vertically arrange the unlocking pull cord 5 in the cabinet so that the distance between the unlocking pull cord and the rear of each layer of drawers is equal, while the length of the top line member 15 is different. The length of the top line member 15 of the upper drawer is greater than that of the top line member 15 of the lower drawer. The design of embodiment 2 makes the upper drawer have a greater influence on the unlocking pull cord when opening and closing, and the opening of the upper drawer is easier to unlock the support wheel frame, so that the extended support wheel frame 4 can movably support the cabinet 1 through the support wheel. At the same time, when the lower drawer is opened, the support wheel frame will not extend too early.

[0049] Embodiment 3 is different from Embodiment 2 in that: the length of the top line member 15 is the same, and the unlocking pull rope is tilted in the cabinet body, so that the distance between the unlocking pull rope and the rear of each layer of drawers is different, the distance between the unlocking pull rope and the rear of the upper drawer is close, and the distance between the unlocking pull rope and the rear of the lower drawer is far. The design of Embodiment 3 also makes the upper drawer have a greater impact on the unlocking pull rope when opening and closing, and the opening of the upper drawer is easier to unlock the support wheel frame, so that the extended support wheel frame 4 can movably support the cabinet body 1 through the support wheel. At the same time, when the lower drawer is opened, the support wheel frame will not be extended prematurely.

[0050] Of course, it can also be designed that when any layer of drawers is opened, the unlocking pull rope will unlock the supporting wheel frame, so that the supporting wheel frame is extended.

[0051] Embodiment 4 differs from Embodiment 1 in that: the buckle head of the male buckle 16 is swingably arranged on the body of the male buckle 16 and is reset by a buckle head spring. When the buckle head of the female buckle 17 is buckled into the buckle head of the male buckle 16, the buckle head of the male buckle 16 swings out of position under the push of the buckle head of the female buckle 17 and swings back to its position under the action of the buckle head spring after the buckle head of the female buckle 17 is buckled into place, thereby realizing the buckling of the male buckle 16 and the female buckle 17.

[0052] In Example 5, the tensioning force of the unlocking rope 5 can also come from a separate tensioner. The simplest tensioner is a tension spring. One end of the tension spring serving as the tensioner is connected to the cabinet, and the other end is connected to the telescopic end of the unlocking rope 5.

Claims

1. A locker, characterized by: The cabinet comprises a cabinet body (1) and a movable supporting device for preventing the cabinet body (1) from tipping over. The cabinet body (1) has a plurality of drawers (2). The movable support device comprises a movable support wheel (3), a support wheel frame (4), a locking device, an unlocking pull rope (5), a wire rack (6) and a driving device. The support wheel frame (4) is telescopically mounted on the cabinet body (1), and the movable support wheel (3) is mounted on the support wheel frame (4). The extended support wheel frame (4) movably supports the cabinet body (1) through the support wheel. The extension direction of the support wheel frame (4) is consistent with the opening direction of the drawer (2). The driving device is mounted on the cabinet (1) and is used to drive the supporting wheel frame (4) to extend. The support wheel frame (4) is locked in the retracted position by a locking device. The wire rack (6) is mounted on the cabinet (1), and the unlocking pull rope (5) is suspended in the cabinet (1) through the wire rack (6) and is located behind the drawer (2). One end of the unlocking pull rope (5) is fixed and is a fixed end, and the other end is a telescopic end. The telescopic end tightens the unlocking pull rope (5) under the traction of the tensioning force. At the same time, the telescopic end of the unlocking pull rope (5) cooperates with the locking device. The locking device is controlled to be in a lockable state or an unlocked state by the telescopic end of the unlocking pull rope (5). The tensioning force for tightening the unlocking pull rope (5) comes from the locking device or from a separate tensioner. A top wire member (15) is provided at the rear of the drawer (2) for changing the bending degree of the unlocking pull cord (5) by pressing on the overhead unlocking pull cord (5), thereby manipulating the extension and retraction of the telescopic end of the unlocking pull cord (5). When the drawers (2) on the cabinet body (1) are all in a closed state, the top wire member (15) drives the unlocking pull rope (5) to overcome the tension force and bend to the maximum extent, and the telescopic end of the unlocking pull rope (5) is retracted to the initial position, and the telescopic end of the unlocking pull rope (5) controls the locking device to be in a lockable state, so that the locking device can lock the support wheel frame (4) in the retracted position; When the drawer (2) is opened, the top line member (15) gradually separates from the unlocking pull rope (5), the degree of bending of the unlocking pull rope (5) gradually decreases under the action of the tensioning force, and the telescopic end of the unlocking pull rope (5) gradually extends. When the telescopic end of the unlocking pull rope (5) extends to a preset length, the telescopic end of the unlocking pull rope (5) controls the locking device to be in an unlocking state, and the locking device unlocks the support wheel frame (4) in the retracted position, so that the support wheel frame (4) extends under the drive of the driving device, and the cabinet body (1) is movably supported by the support wheels; The driving device is a force storage type driving device, which stores force under the drive of the supporting wheel frame (4) when the supporting wheel frame (4) is being retracted, and releases the stored force to drive the supporting wheel frame (4) to extend when the supporting wheel frame is unlocked; The force storage type driving device is specifically a driving spring (7), one end of which is mounted on the cabinet (1), and the other end of which is driven by the supporting wheel frame (4). When the supporting wheel frame (4) is recovered, it drives the driving spring (7) to elastically deform and store force; It also includes a support wheel frame recovery device, which includes a pedal mechanism (8), a recovery pull rope (9) and a recovery lever (10). The pedal mechanism (8) is mounted on the cabinet (1), the recovery lever (10) is mounted on the cabinet (1) via a fulcrum shaft (11), and the long arm end of the recovery lever (10) is driven and matched with the supporting wheel frame (4). The pedal mechanism (8) is driven in cooperation with the short arm end of the recovery lever (10) through a pull rope, and the power storage drive device is also driven in cooperation with the short arm end of the recovery lever (10). When the locking device unlocks the support wheel frame, the power storage drive device drives the support wheel frame (4) to extend by utilizing the lever principle through the recovery lever (10). When the support wheel frame (4) needs to be recovered, the pedal mechanism (8) drives the recovery lever (10) through the recovery pull rope (9), and the recovery lever (10) accumulates power in the power storage drive device while driving the support wheel frame (4) to be recovered, until the support wheel frame (4) is locked by the locking device; The pedal mechanism (8) comprises a pedal (8-1) and a rotating shaft (8-2); the pedal (8-1) is mounted on the cabinet (1) via the rotating shaft (8-2); The supporting wheel frame (4) is telescopically mounted on the bottom of the cabinet (1) via a bearing seat (12). The support wheel frame (4) is provided with two front and rear toggle fulcrums (13) for forming an toggle opening for inserting the recovery lever (10). The long arm end of the recovery lever (10) is inserted into the toggle opening to achieve driving cooperation between the long arm end of the recovery lever (10) and the support wheel frame (4). The overhead unlocking pull rope (5) is divided into a plurality of overhead sections by the overhead member, and each drawer (2) corresponds to an overhead section. A drawer lock is provided between the drawer (2) and the cabinet (1) for positioning the drawer in a closed position; The locking device comprises a male buckle (16) and a female buckle (17), wherein the male buckle (16) is arranged on the supporting wheel frame (4), and the female buckle (17) is swingably mounted on the cabinet body (1). The female buckle (17) and the cabinet body (1) are reset via a female buckle reset spring (17-1), and the telescopic end of the unlocking pull rope (5) is connected to the female buckle (17). The female buckle reset spring (17-1) provides a tensioning force for the unlocking pull rope (5) via the female buckle (17). When the drawers (2) on the cabinet (1) are all in a closed state, the telescopic end of the unlocking pull rope (5) drives the female buckle (17) to overcome the spring force of the female buckle return spring (17-1) and swing to a lockable position, and when the support wheel frame (4) is retracted to the retracted position, the male buckle (16) and the female buckle (17) are engaged to lock the support wheel frame (4); When the drawer (2) is opened, the telescopic end of the unlocking pull rope (5) gradually extends, and the female buckle return spring (17-1) drives the female buckle (17) to swing and return to its original position. When the telescopic end of the unlocking pull rope (5) extends to a preset length, the female buckle (17) swings and returns to its unlocking position, and the female buckle (17) and the male buckle (16) are disengaged, thereby unlocking the support wheel frame (4). The buckle head of the female buckle (17) is swingably arranged on the female buckle body and is reset by a buckle head spring. When the buckle head of the male buckle (16) is buckled into the buckle head of the female buckle (17), the buckle head of the female buckle (17) swings out of position under the push of the buckle head of the male buckle (16) and swings back to position under the action of the buckle head spring after the buckle head of the male buckle (16) is buckled into place, thereby realizing the buckling of the male buckle (16) and the female buckle (17); Or the buckle head of the male buckle (16) is swingably arranged on the male buckle (16) body and reset by a buckle head spring. When the buckle head of the female buckle (17) is buckled into the buckle head of the male buckle (16), the buckle head of the male buckle (16) is pushed by the buckle head of the female buckle (17) to swing out of position and after the buckle head of the female buckle (17) is buckled into place, it is swingably reset under the action of the buckle head spring, thereby realizing the buckling of the male buckle (16) and the female buckle (17).

2. The locker according to claim 1, characterized in that: The said shifting fulcrum (13) is a pulley fixed on the supporting wheel frame (4). The drawer lock comprises a drawer magnet (14-1) mounted on the drawer (2) and a cabinet magnet (14-2) mounted on the cabinet (1); when the drawer (2) is pushed to a closed position, the drawer magnet (14-1) and the cabinet magnet (14-2) are attracted to each other, and the drawer (2) is positioned in the closed position by the magnetic force of the drawer magnet (14-1) and the cabinet magnet (14-2). The bottom of the cabinet body also has a fixed support point for supporting the cabinet body.

3. The locker according to claim 1, characterized in that: The top line member (15) is a roller with a V-shaped groove.

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