CN111941372A

CN111941372A - Storing cabinet

Info

Publication number: CN111941372A
Application number: CN202010852811.XA
Authority: CN
Inventors: 顾国兴
Original assignee: Changzhou Shuan Vehicle Co ltd
Current assignee: Changzhou Shuan Vehicle Co ltd
Priority date: 2020-08-22
Filing date: 2020-08-22
Publication date: 2020-11-17

Abstract

The invention relates to a storage cabinet, which comprises a cabinet body and a movable supporting device, wherein the movable supporting device comprises a movable supporting wheel, a supporting wheel frame, a locking device, an unlocking pull rope, a stringing piece and a driving device, the supporting wheel frame is telescopically arranged on the cabinet body, the extended supporting wheel frame movably supports the cabinet body through the supporting wheel, the supporting wheel frame is locked at a recovery position through the locking device, the unlocking pull rope is erected in the cabinet body through the stringing piece and is positioned at the rear part of a drawer, the telescopic control locking device at the telescopic end of the unlocking pull rope is in a lockable state or an unlocking state, and the rear part of the drawer is provided with a top line piece which is used for changing the bending degree of the unlocking pull rope in a mode of being propped against the erected unlocking pull rope so as to control the. The beneficial effects are that: the structure is safe and reliable, and is economical and practical. When any drawer is opened and the telescopic end of the unlocking pull rope extends to a preset length, the supporting wheel frame is automatically popped out, so that the aim of preventing the locker from inclining is fulfilled.

Description

Storing cabinet

Technical Field

The invention relates to a storage cabinet.

Background

The locker, especially the workshop toolbox of machinery trade, generally is used for depositing some heavier instrument of quality, such as hammer, spanner, tool tong etc. workman in the use, because careless or careless reason such as etc. does not carry out the return processing to opening the drawer, can have the phenomenon that a plurality of drawers were opened simultaneously like this, because the instrument quality in the drawer is generally heavier, the drawer is opened more, causes the toolbox to overturn easily, can produce harm to workman's personal safety and operational environment.

In order to solve the technical problem, an existing solution is to limit the number of drawers to be opened, for example, chinese patent CN210714195U discloses a slide rail interlocking mechanism for preventing multiple drawers from being opened simultaneously, the chinese patent discloses that the number of drawers to be opened is limited by the slide rail interlocking mechanism, after a drawer is taken out, other drawers cannot be taken out, so that multiple drawers are prevented from being taken out simultaneously, the center of gravity of the storage cabinet is ensured, and the drawer cannot be toppled over to cause damage or injury to people due to the fact that all drawers are taken out.

The disadvantages of this prior art are: only one drawer can be opened at a time, the taking of articles is inconvenient, and the slide rail interlocking mechanism is complex in structure, high in cost and high in failure rate.

Another existing solution is that the supporting point at the bottom of the cabinet body changes along with the center of gravity of the cabinet body, for example, chinese patent CN203919017U anti-toppling toolbox, which discloses that a fixed roller and a movable roller are arranged at the bottom of the cabinet body as a fixed supporting point and a movable supporting point, and the movable roller as the movable supporting point is mounted on a linkage device, and the linkage device and the drawer move synchronously, so as to prevent the toppling of the cabinet body due to the shift of the center of gravity of the cabinet body caused by the movement of the drawer.

The disadvantages of this prior art are: the drawer is hard to open, any drawer opening linkage device can be synchronously opened, and the fixed roller can be retracted after the drawer is closed.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the utility model provides a locker, can unblock the activity supporting wheel as required after the drawer is opened, prevent that the cabinet body from toppling over.

The technical scheme adopted by the invention for solving the technical problems is as follows: a storage cabinet comprises a cabinet body and a movable supporting device for preventing the cabinet body from toppling over, wherein the cabinet body is provided with 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 stringing piece and a driving device, the supporting wheel frame is telescopically arranged on the cabinet body, the movable supporting wheel is arranged on the supporting wheel frame, the extending 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 drawers, the driving device is arranged on the cabinet body and is used for driving the supporting wheel frame to extend out, the supporting wheel frame is locked at a recovery position through the locking device, the stringing piece is arranged on the cabinet body, the unlocking pull rope is erected in the cabinet body through the stringing piece and is positioned at the rear part of the drawers, one end of the unlocking pull rope is fixed and the other end is, meanwhile, the telescopic end of the unlocking stay rope is matched with the locking device, the locking device is controlled to be in a lockable state or an unlocked state through the expansion and contraction of the telescopic end of the unlocking stay rope, the tightening force for tightening the unlocking stay rope comes from the locking device or from an independent tightener, the rear part of the drawer is provided with a top line piece which is used for changing the bending degree of the unlocking stay rope in a mode of propping against the overhead unlocking stay rope so as to control the expansion and contraction of the telescopic end of the unlocking stay rope, when the drawers on the cabinet body are in a closed state, the top line piece drives the unlocking stay rope to overcome the maximum bending degree of the tightening force, the telescopic end of the unlocking stay rope retracts to the initial position, the telescopic end of the unlocking stay rope controls the locking device to be in a lockable state, and the locking device; when the drawer is opened, the top line piece is gradually separated from the unlocking stay cord, the bending degree of the unlocking stay cord is gradually reduced under the action of the tensioning force, the telescopic end of the unlocking stay cord gradually extends out, when the telescopic end of the unlocking stay cord extends out to the preset length, the telescopic end of the unlocking stay cord controls the locking device to be in the unlocking state, the locking device unlocks the supporting wheel frame in the recovery position, the supporting wheel frame extends out under the driving of the driving device, and the cabinet body is movably supported through the supporting wheel.

Further, the driving device is a power storage type driving device, the driving device stores power under the driving of the supporting wheel frame when the supporting wheel frame is retracted, and releases the power to drive the supporting wheel frame to extend when the supporting wheel frame is unlocked.

Further limited, the force storage driving device is a driving spring, one end of the driving spring is mounted on the cabinet body, the other end of the driving spring is in driving fit with the supporting wheel frame, and the supporting wheel frame drives the driving spring to elastically deform to store force when being retracted.

The supporting wheel carrier recovery device comprises a pedal mechanism, a recovery pull rope and a recovery lever, wherein the pedal mechanism is installed on the cabinet body, the recovery lever is installed on the cabinet body through a fulcrum shaft, the long arm end of the recovery lever is in driving fit with the supporting wheel carrier, the pedal mechanism is in driving fit with the short arm end of the recovery lever through the pull rope, the force storage type driving device is also in driving fit with the short arm end of the recovery lever, when the locking device unlocks the supporting wheel carrier, the force storage type driving device drives the supporting wheel carrier to extend out through the recovery lever by utilizing the lever principle, when the supporting wheel carrier needs to be recovered, the pedal mechanism drives the recovery lever through the recovery pull rope, and the recovery lever stores force on the force storage type driving device while driving the supporting wheel carrier to recover until the supporting wheel carrier is locked by the locking device.

Further limited, the pedal mechanism comprises a pedal and a rotating shaft, and the pedal is arranged on the cabinet body through the rotating shaft.

Further inject, the support wheel carrier passes through the bearing frame and telescopically installs in the bottom of the cabinet body, two around stir the fulcrum have on the support wheel carrier for form insert the stir mouth of retrieving the lever, the long arm end of retrieving the lever inserts stir the mouth, realize retrieving the long arm end of lever and the drive fit of support wheel carrier, built on stilts unblock stay cord is divided into a plurality of built on stilts sections by built on stilts, every drawer corresponds an built on stilts section, drawer lock has between drawer and the cabinet body, be used for fixing a position the drawer in the closed position.

Further inject, stir the fulcrum for fixing the pulley on supporting the wheel carrier, the drawer lock is including installing the drawer magnet on the drawer and installing the cabinet body magnet on the cabinet body, when the drawer pushed away to the closed position, drawer magnet and cabinet body magnet adsorb, and the drawer passes through the magnetic force location of drawer magnet and cabinet body magnet at the closed position, and the bottom of the cabinet body still has fixed support point for support the cabinet body.

The locking device comprises a male buckle and a female buckle, the male buckle is arranged on the supporting wheel carrier, the female buckle is arranged on the cabinet body in a swinging mode, the female buckle and the cabinet body reset through a female buckle reset spring, the telescopic end of the unlocking pull rope is connected with the female buckle, the female buckle reset spring provides tightening force for the unlocking pull rope through the female buckle, when drawers on the cabinet body are all in a closed state, the telescopic end of the unlocking pull rope drives the female buckle to swing to a lockable position by overcoming the spring force of the female buckle reset spring, and when the supporting wheel carrier is recovered to a recovery position, the male buckle is buckled with the female buckle to lock the supporting wheel carrier; when the drawer is opened, the telescopic end of the unlocking pull rope gradually extends out, the female buckle reset spring drives the female buckle to swing and reset, when the telescopic end of the unlocking pull rope extends out to a preset length, the female buckle swings and resets to an unlocking position, the female buckle and the male buckle are separated, the unlocking support wheel carrier is used, the buckle head of the female buckle is arranged on the female buckle body in a swinging and abdicating mode and is reset through 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 swings and abdications under the push of the buckle head of the male buckle and swings and resets under the action of the buckle head spring after the buckle head of the male buckle is buckled in place, and the buckling of the male buckle and the female buckle is realized; or the buckle head of the male buckle can be arranged on the male buckle body in a swinging and abdicating mode and reset through 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 swings and abdications under the push of the buckle head of the female buckle and swings and resets under the action of the buckle head spring after the buckle head of the female buckle is buckled in place, and therefore buckling of the male buckle and the female buckle is achieved.

Further defined, the wire ejection member is a roller having a V-shaped groove.

The invention has the beneficial effects that: the structure is safe and reliable, and is economical and practical. The cabinet body is movably supported by the cabinet body through the telescopic unlocking movable supporting device at the telescopic end of the unlocking stay cord, the telescopic end of the unlocking stay cord gradually extends out after any drawer is opened, the supporting wheel carrier is automatically popped out when the telescopic end of the unlocking stay cord extends out to a preset length, so that the aim of preventing the cabinet body from inclining is fulfilled, and the supporting wheel carrier can be conveniently recovered by a pedal mechanism of the supporting wheel carrier recovery device on the side surface when the supporting wheel carrier is required to be recovered after the drawer is closed.

Drawings

The invention is further explained below with reference to the figures and examples;

FIG. 1 is a schematic view of a support wheel carrier recovery apparatus of the present invention;

FIG. 2 is a schematic view of the drive spring driven unlocked support wheel carriage of the present invention;

FIG. 3 is a schematic view of the recovery support wheel carriage of the support wheel carriage recovery unit of the present invention after the pedals are in place;

FIG. 4 is a schematic view of the recovery support wheel carriage of the support wheel carriage recovery unit of the present invention after the pedals are in place;

FIG. 5 is a side view of the drawer of the present invention illustrating the unlocking of the movable support;

FIG. 6 is a side view of the locking mechanism of the drawer of the present invention;

FIG. 7 is a side view of the drawer of the present invention;

FIG. 8 is a front view of the drawer according to the present invention;

FIG. 9 is a front view of a drawer (not shown) of the present invention.

In the figure, 1, a cabinet body, 2, a drawer, 3, a movable supporting wheel, 4, a supporting wheel frame, 5, an unlocking pull rope, 6, a stringing piece, 7, a driving spring, 8, a pedal mechanism, 8-1, a pedal, 8-2, a rotating shaft, 9, a recovery pull rope, 10, a recovery lever, 11, a fulcrum shaft, 12, a bearing seat, 13, a toggle fulcrum, 14-1, a drawer magnet, 14-2, a cabinet body magnet, 15, a stringing piece, 16, a male buckle, 17, a female buckle, 17-1, a female buckle reset spring and 18, a fixed supporting roller.

Detailed Description

As shown in figures 1-9, embodiment 1 is a storage cabinet, which comprises a cabinet body 1 and a movable supporting device for preventing the cabinet body 1 from toppling over, wherein the cabinet body 1 is provided with a plurality of drawers 2. The bottom of the cabinet 1 is also provided with fixed supporting rollers 18 as fixed supporting points of the cabinet itself.

The movable supporting device comprises a movable supporting wheel 3, a supporting wheel frame 4, a locking device, an unlocking pull rope 5, a stringing piece 6 and a driving device. The supporting wheel frame 4 is telescopically arranged on the cabinet body 1, the movable supporting wheel 3 is arranged on the supporting wheel frame 4, and the extended supporting wheel frame 4 movably supports the cabinet body 1 through the supporting wheel. The driving device is arranged on the cabinet body 1 and used for driving the supporting wheel frame 4 to extend out. The supporting wheel carrier 4 is locked in the retracted position by the locking means. The stringing piece 6 is installed on the cabinet body 1, and the unblock stay cord 5 is built on stilts at the internal rear that lies in drawer 2 of cabinet through stringing piece 6, and the one end of unblock stay cord 5 is fixed, for the stiff end, and the other end is flexible end, and flexible end tightens unblock stay cord 5 under the traction of tightening force, and the flexible end and the locking device cooperation of unblock stay cord 5 are simultaneously unlocked, and flexible control locking device through the flexible end of unblock stay cord 5 is in lockable state or unblock state. The tightening force with which the unlocking cord 5 is tightened originates from the locking device. The drawer 2 has a wire pushing member 15 at the rear thereof for changing the degree of bending of the unlocking cord 5 by pushing it against the overhead unlocking cord 5, thereby operating the expansion and contraction of the expansion end of the unlocking cord 5.

As shown in fig. 6, when the drawers 2 on the cabinet 1 are all in a closed state, the top line member 15 drives the unlocking pulling rope 5 to overcome the tightening force and to be in a maximum bending degree, the telescopic end of the unlocking pulling rope 5 retracts to an initial position, and the telescopic end of the unlocking pulling rope 5 controls the locking device to be in a lockable state, so that the locking device can lock the supporting wheel carrier 4 in the retraction position; as shown in fig. 5, when the drawer 2 is opened, the top line member 15 is gradually separated from the unlocking pulling rope 5, the bending degree of the unlocking pulling rope 5 under the action of the tensioning force is gradually reduced, the telescopic end of the unlocking pulling rope 5 is gradually extended, the telescopic end of the unlocking pulling rope 5 is extended to a preset length, the telescopic end of the unlocking pulling rope 5 controls the locking device to be in an unlocking state, the locking device unlocks the supporting wheel carrier 4 in the recovery position, the supporting wheel carrier 4 is extended under the driving of the driving device, and the cabinet body 1 is movably supported through the supporting wheel.

The wire-pushing member 15 is a roller having a V-groove. When the top line piece 15 contacts the unlocking pulling rope 5, the unlocking pulling rope 5 is clamped into the V-shaped groove of the roller of the V-shaped groove.

The driving device is a force accumulation type driving device which accumulates force under the driving of the supporting wheel frame 4 when the supporting wheel frame 4 is recovered and releases the accumulated force to drive the supporting wheel frame 4 to extend when the supporting wheel frame is unlocked. The force storage driving device is specifically a driving spring 7, one end of the driving spring 7 is installed on the cabinet body 1, the other end of the driving spring is in driving fit with the supporting wheel frame 4, and the supporting wheel frame 4 drives the driving spring 7 to elastically deform to store force during recovery. In the drawings, the drive spring 7 is a tension spring.

The storage cabinet also comprises a supporting wheel carrier recovery device, the supporting wheel carrier recovery device comprises a pedal mechanism 8, a recovery pull rope 9 and a recovery lever 10, the pedal mechanism 8 is arranged on the cabinet body 1, the recovery lever 10 is arranged on the cabinet body 1 through a fulcrum shaft 11, the long arm end of the recovery lever 10 is in driving fit with the supporting wheel carrier 4, the pedal mechanism 8 is in driving fit with the short arm end of the recovery lever 10 through the pull rope, the force storage driving device is also in driving fit with the short arm end of the recovery lever 10, when the locking device unlocks the wheel carrier of the supporting frame, the force storage type driving device drives the supporting wheel carrier 4 to extend out by utilizing the lever principle through the recovery lever 10, when the supporting 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 stores the force on the force storage type driving device while driving the supporting wheel frame 4 to recover until the supporting wheel frame 4 is locked by the locking device.

The pedal mechanism 8 comprises a pedal 8-1 and a rotating shaft 8-2, and the pedal 8-1 is arranged on the cabinet body 1 through the rotating shaft 8-2.

The supporting wheel frame 4 is telescopically mounted at the bottom of the cabinet 1 through a bearing seat 12.

The supporting wheel frame 4 is provided with a front toggle fulcrum 13 and a rear toggle fulcrum 13, which are used for forming a toggle opening for inserting the recovery lever 10, and the long arm end of the recovery lever 10 is inserted into the toggle opening, so that the long arm end of the recovery lever 10 is in driving fit with the supporting wheel frame 4. The toggle fulcrum 13 is a pulley fixed on the support wheel frame 4.

The overhead unlocking stay cord 5 is divided into a plurality of overhead sections by the overhead member, and each drawer 2 corresponds to one overhead section, as shown in detail in fig. 3 and 4.

Between the drawer 2 and the cabinet 1 there is a drawer lock for positioning the drawer in the closed position. The drawer lock comprises a drawer magnet 14-1 arranged on the drawer 2 and a cabinet magnet 14-2 arranged 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 adsorbed, and the drawer 2 is positioned at the closed position through the magnetic force of the drawer magnet 14-1 and the cabinet magnet 14-2.

As shown in fig. 5 and 6, the locking device includes a male buckle 16 and a female buckle 17, the male buckle 16 is arranged on the supporting wheel carrier 4, the female buckle 17 is swingably mounted on the cabinet body 1, the female buckle 17 and the cabinet body 1 are reset through a female buckle reset spring 17-1, the telescopic end of the unlocking pull rope 5 is connected with the female buckle 17, the female buckle reset spring 17-1 provides a tightening force for the unlocking pull rope 5 through the female buckle 17, when the drawers 2 on the cabinet body 1 are all in a closed state, the telescopic end of the unlocking pull rope 5 drives the female buckle 17 to swing to a lockable position against the spring force of the female buckle reset spring 17-1, when the supporting wheel carrier 4 is retracted to the retraction position, the male buckle 16 is buckled with the female buckle 17, and the supporting wheel carrier 4 is locked; when the drawer 2 is opened, the telescopic end of the unlocking pull rope 5 gradually extends out, the female buckle reset spring 17-1 drives the female buckle 17 to swing and reset, when the telescopic end of the unlocking pull rope 5 extends out to a preset length, the female buckle 17 swings and resets to an unlocking position, the female buckle 17 and the male buckle 16 are separated, the unlocking support wheel frame 4 is formed, the buckle head of the female buckle 17 can be arranged on the female buckle body in a swinging and abdicating mode and reset through 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 abdicating under the push of the buckle head of the male buckle 16 and swings and resets under the action of the buckle head spring after the buckle head of the male buckle 16 is buckled in place, and buckling of the male buckle 16 and the female buckle 17 is achieved.

In addition to the male-female locking device of the embodiment 1, the present invention may adopt other locking devices of the prior art as long as the locking device can be switched between the lockable state and the unlocked state by the driving of the telescopic end of the unlocking cord 5.

The unlocking pulling ropes 5 are vertically arranged in the cabinet body, so that the distances between the unlocking pulling ropes and the rear parts of the drawers in all layers are equal, and the lengths of the top line pieces 15 are the same.

The working procedure of this example 1 is as follows:

when the drawer is opened, the top line piece 15 breaks away from the unlocking stay cord 5 gradually, the bending degree of the unlocking stay cord 5 under the effect of the tensioning force becomes small gradually, the telescopic end of the unlocking stay cord 5 stretches out to the preset length, the female buckle 17 swings to reset to the unlocking position, the female buckle 17 and the male buckle 16 break away from, and the unlocking support wheel carrier 4. The elastic deformation of the driving spring 7 is recovered, the recovery lever 10 is pulled to swing anticlockwise, the recovery lever 10 drives the supporting wheel frame 4 to extend out by utilizing the lever principle, the cabinet body 1 is movably supported by the supporting wheel, and the storage cabinet is prevented from toppling over due to the opening of the drawer.

When the drawer that opens is closed, the terminal line piece 15 removes to cabinet body 1 along with the drawer together, until beginning to contact unblock stay cord 5, after contacting unblock stay cord 5, terminal line piece 15 begins to order about unblock stay cord 5 and overcomes the tension and take place the bending, and the flexible end of unblock stay cord 5 withdraws gradually, and the pulling box 17 is gradually to the swing of lockable position.

When the opened drawer is closed, the telescopic end of the unlocking pull rope 5 retracts to the initial position, and the female buckle 17 is pulled to swing to the lockable position.

When the male-and-female-buckle type locking device is in a lockable state, a foot 8-1 is stepped on, the pedal mechanism 8 drives the recovery lever 10 through the recovery pull rope 9, and the recovery lever 10 stores force on the force storage type driving device while driving the supporting wheel frame 4 to recover until the supporting wheel frame 4 is locked by the locking device.

Example 2: in embodiment 1, the drawer of lower floor is the same to the influence of unblock stay cord on the cabinet body, but the influence that the drawer of lower floor changes the cabinet body focus on the cabinet body is different, and the drawer of upper floor changes the focus of the cabinet body more easily, so on embodiment 1's basis, this embodiment 2 design unblock stay cord 5 sets up perpendicularly in the cabinet body, makes the distance between unblock stay cord and each layer drawer rear portion equal, and the length of top line spare 15 is different, and the length of top line spare 15 of upper drawer is greater than the length of top line spare 15 of lower floor's drawer. The design of this embodiment 2 makes the upper drawer influence the unblock stay cord more greatly when the switch, and the support wheel carrier is changeed in unblock of upper drawer, makes the support wheel carrier 4 that stretches out carry out the activity support through supporting wheel pair cabinet body 1. Meanwhile, when the lower drawer is opened, the supporting wheel frame cannot be extended too early.

Example 3, which differs from example 2 in that: the top line pieces 15 are the same in length, the unlocking pull ropes are obliquely arranged in the cabinet body, so that the distances between the unlocking pull ropes and the rear parts of the drawers on each layer are different, the distance between the unlocking pull ropes and the rear parts of the drawers on the upper layer is short, and the distance between the unlocking pull ropes and the rear parts of the drawers on the lower layer is long. The design of the embodiment 3 also enables the upper drawer to have larger influence on the unlocking pull rope during opening and closing, and the supporting wheel frame is easier to unlock when the upper drawer is opened, so that the extended supporting wheel frame 4 movably supports the cabinet body 1 through the supporting wheel. Meanwhile, when the lower drawer is opened, the supporting wheel frame cannot be extended too early.

Certainly, the drawer unlocking device can also be designed in such a way that when any layer of drawer is opened, the unlocking pull rope can unlock the supporting wheel frame to enable the supporting wheel frame to extend out.

Example 4, the difference from example 1 is that: the buckle head of the male buckle 16 is arranged on the body of the male buckle 16 in a swinging abdicating mode and is reset through the 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 abdicating under the push of the buckle head of the female buckle 17 and swings for resetting under the action of the buckle head spring after the buckle head of the female buckle 17 is buckled in place, and therefore buckling of the male buckle 16 and the female buckle 17 is achieved.

In embodiment 5, the tightening force for tightening the unlocking cord 5 may also be derived from a single tensioner, and the simplest tensioner is a tension spring, one end of which is connected to the cabinet and the other end of which is connected to the telescopic end of the unlocking cord 5.

Claims

1. A storage cabinet is characterized in that: comprises a cabinet body (1) and a movable supporting device for preventing the cabinet body (1) from toppling over, wherein the cabinet body (1) is provided with a plurality of drawers (2),

the movable supporting device comprises a movable supporting wheel (3), a supporting wheel carrier (4), a locking device, an unlocking pull rope (5), a stringing piece (6) and a driving device,

the supporting wheel frame (4) is telescopically arranged on the cabinet body (1), the movable supporting wheel (3) is arranged on the supporting wheel frame (4), the extended supporting wheel frame (4) movably supports the cabinet body (1) through the supporting wheel, the extending direction of the supporting wheel frame (4) is consistent with the opening direction of the drawer (2),

the driving device is arranged on the cabinet body (1) and is used for driving the supporting wheel carrier (4) to extend out,

the supporting wheel frame (4) is locked at the recovery position by a locking device,

the stringing piece (6) is arranged on the cabinet body (1), the unlocking stay cord (5) is erected in the cabinet body (1) through the stringing piece (6) and is positioned at the rear part of the drawer (2), one end of the unlocking stay cord (5) is fixed and is a fixed end, the other end of the unlocking stay cord is a telescopic end, the telescopic end stretches the unlocking stay cord (5) under the traction of stretching force, meanwhile, the telescopic end of the unlocking stay cord (5) is matched with the locking device, the locking device is controlled to be in a lockable state or an unlocking state through the stretching of the telescopic end of the unlocking stay cord (5),

the tightening force for tightening the unlocking cord (5) originates from the locking device or from a separate tensioner,

the rear part of the drawer (2) is provided with a top line piece (15) which is used for changing the bending degree of the unlocking stay rope (5) in a mode of being propped against the overhead unlocking stay rope (5) so as to control the expansion and contraction of the expansion end of the unlocking stay rope (5),

when the drawers (2) on the cabinet body (1) are all in a closed state, the top wire piece (15) drives the unlocking pull rope (5) to overcome the tightening force and be in the maximum bending degree, the telescopic end of the unlocking pull rope (5) retracts to the initial position, the telescopic end of the unlocking pull rope (5) controls the locking device to be in a lockable state, and the locking device can lock the supporting wheel carrier (4) in the retracting position;

when drawer (2) are opened, terminal line spare (15) break away from unblock stay cord (5) gradually, unblock stay cord (5) bending degree diminishes gradually under the effect of the tension force, the flexible end of unblock stay cord (5) stretches out gradually, the flexible end of unblock stay cord (5) stretches out when predetermineeing length, the flexible end control locking device of unblock stay cord (5) is in the unblock state, the locking device unblock is in support wheel carrier (4) of retrieving the position, make support wheel carrier (4) stretch out under drive arrangement's drive, carry out the activity through supporting wheel to the cabinet body (1) and support.

2. The storage cabinet of claim 1, wherein: the driving device is a force accumulation type driving device, the driving device accumulates force under the driving of the supporting wheel frame (4) when the supporting wheel frame (4) is recovered, and releases the force accumulation to drive the supporting wheel frame (4) to extend when the supporting wheel frame is unlocked.

3. The storage cabinet of claim 2, wherein: the force storage type driving device is specifically a driving spring (7), one end of the driving spring (7) is installed on the cabinet body (1), the other end of the driving spring is in driving fit with the supporting wheel carrier (4), and the supporting wheel carrier (4) drives the driving spring (7) to elastically deform to store force during recovery.

4. The storage cabinet of claim 2, wherein: also comprises a supporting wheel carrier recovery device, the supporting wheel carrier recovery device comprises a pedal mechanism (8), a recovery pull rope (9) and a recovery lever (10),

the pedal mechanism (8) is arranged on the cabinet body (1), the recovery lever (10) is arranged on the cabinet body (1) through the fulcrum shaft (11), the long arm end of the recovery lever (10) is in driving fit with the supporting wheel carrier (4),

the pedal mechanism (8) is in driving fit with the short arm end of the recovery lever (10) through a pull rope, the force storage driving device is also in driving fit with the short arm end of the recovery lever (10),

when the locking device unlocks the wheel carrier of the supporting frame, the force storage type driving device drives the supporting wheel carrier (4) to extend out by utilizing the lever principle through the recovery lever (10),

when the supporting wheel carrier (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) stores the force on the force storage type driving device while driving the supporting wheel carrier (4) to recover until the supporting wheel carrier (4) is locked by the locking device.

5. The storage cabinet of claim 4, wherein: the pedal mechanism (8) comprises a pedal (8-1) and a rotating shaft (8-2), and the pedal (8-1) is arranged on the cabinet body (1) through the rotating shaft (8-2).

6. The storage cabinet of claim 4, wherein: the supporting wheel carrier (4) is telescopically arranged at the bottom of the cabinet body (1) through a bearing seat (12),

a front toggle fulcrum and a rear toggle fulcrum (13) are arranged on the supporting wheel carrier (4) and are used for forming a toggle opening for inserting the recovery lever (10), the long arm end of the recovery lever (10) is inserted into the toggle opening to realize the driving matching of the long arm end of the recovery lever (10) and the supporting wheel carrier (4),

the overhead unlocking pull rope (5) is divided into a plurality of overhead sections by overhead parts, each drawer (2) corresponds to one overhead section,

a drawer lock is provided between the drawer (2) and the cabinet (1) for positioning the drawer in a closed position.

7. The storage cabinet of claim 6, wherein: the toggle fulcrum (13) is a pulley fixed on the support wheel frame (4),

the drawer lock comprises a drawer magnet (14-1) arranged on the drawer (2) and a cabinet body magnet (14-2) arranged on the cabinet body (1), when the drawer (2) is pushed to the closing position, the drawer magnet (14-1) and the cabinet body magnet (14-2) are adsorbed, the drawer (2) is positioned at the closing position through the magnetic force of the drawer magnet (14-1) and the cabinet body magnet (14-2),

the bottom of the cabinet body is also provided with a fixed supporting point for supporting the cabinet body.

8. The storage cabinet of claim 1, wherein: the locking device comprises a male buckle (16) and a female buckle (17), the male buckle (16) is arranged on the supporting wheel carrier (4), the female buckle (17) is arranged on the cabinet body (1) in a swinging way, the female buckle (17) and the cabinet body (1) are reset through a female buckle reset spring (17-1), the telescopic end of the unlocking pull rope (5) is connected with the female buckle (17), the female buckle reset spring (17-1) provides tightening force of the unlocking pull rope (5) through the female buckle (17),

when the drawers (2) on the cabinet body (1) are all in a closed state, the telescopic end of the unlocking pull rope (5) drives the female buckle (17) to swing to a lockable position by overcoming the spring force of the female buckle return spring (17-1), and the male buckle (16) is buckled with the female buckle (17) when the supporting wheel carrier (4) is recovered to the recovery position, so that the supporting wheel carrier (4) is locked;

when the drawer (2) is opened, the telescopic end of the unlocking pull rope (5) gradually extends out, the female buckle reset spring (17-1) drives the female buckle (17) to swing and reset, when the telescopic end of the unlocking pull rope (5) extends out to a preset length, the female buckle (17) swings and resets to an unlocking position, the female buckle (17) and the male buckle (16) are separated, the supporting wheel carrier (4) is unlocked,

the buckle head of the female buckle (17) is arranged on the female buckle body in a swinging abdicating way and is reset through 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 abdicating under the push of the buckle head of the male buckle (16) and swings for resetting under the action of the buckle head spring after the buckle head of the male buckle (16) is buckled in place, and the buckling of the male buckle (16) and the female buckle (17) is realized;

or the buckle head of the male buckle (16) can be arranged on the body of the male buckle (16) in a swinging abdicating mode and reset through the 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 abdicating under the push of the buckle head of the female buckle (17) and swings and resets under the action of the buckle head spring after the buckle head of the female buckle (17) is buckled in place, and the buckling of the male buckle (16) and the female buckle (17) is realized.

9. The storage cabinet of claim 1, wherein: the top line piece (15) is a roller with a V-shaped groove.