Storage device and drawer closing method thereof

Abstract

The present invention discloses a storage device and a drawer closing method thereof, wherein the storage device is configured such that one of a motor or a rack driving the drawer is disposed on a mounting seat, and the mounting seat is disposed on an energy storage mechanism. When the drawer is opened, the gear is decoupled from the rack, and the mounting seat is located at a high position. When the gear is meshed with the rack, the mounting seat is located at a low position. A position detection device is used to determine the position of the mounting seat. When the mounting seat is at a low position, the motor is controlled to start and the drawer is automatically closed. When the drawer needs to be closed, a thrust is applied to any position at the front end of the drawer. Compared with pressing a button at a specific position, the storage device is easier to operate and is more suitable for pharmacy applications. At the same time, when a staff member in front of the drawer collides with the open drawer, the drawer can automatically trigger the motor to close the drawer under the action of the thrust, effectively avoiding a hard collision between the drawer and the staff member and fully improving safety.

Description

Technical Field

[0001] The invention relates to the field of medical equipment, in particular to a storage device and a drawer closing method thereof. Background Art

[0002] A drawer is a box used to store things. It has a bottom but no lid, and can be pulled out and pushed in.

[0003] Conventional drawers are opened and closed by manual pulling. In some automated pharmacies, automated drawers are needed to facilitate automatic medication removal. Conventional automated drawers use a drive mechanism to drive the drawers to automatically open and close, such as the structure disclosed in application numbers 201621463222.8 and 201710396978.8.

[0004] In the first structure driven by a motor, when the drawer needs to be closed after being opened, a trigger signal is usually generated by a button to start the motor to drive the drawer to close. This operation method is not very convenient, and the setting of buttons also increases the complexity of the control structure. More importantly, in this structure, when the drawer is open, if there is no closing signal, the drawer cannot be closed automatically. At this time, if the staff in front of the drawer accidentally collides with the drawer, due to the lack of a buffer between the two, it is easy to cause injury to the staff and damage to the drawer, and the safety needs to be improved.

[0005] In the second magnetically driven structure, although this structure can have a certain buffering effect and avoid safety problems caused by abnormal collisions between staff and open drawers, this structure uses magnetic opening and closing, and the impact force when the drawer is opened and closed is relatively large, which can easily cause the items stored in the drawer to vibrate greatly, resulting in confusion and affecting the safety of the items in the drawer. Especially for medicine cabinets that store medicinal materials and medicines, drawers with this structure are difficult to use. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems existing in the prior art and to provide a storage device and a drawer closing method thereof.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] A storage device includes a drawer, a guide rail, a driving mechanism for driving the drawer to open and close, and a controller, wherein the driving mechanism includes a motor, a gear driven by the motor, and a rack matched with the gear.

[0009] One of the motor and the rack is arranged on the drawer, and the other is arranged on a mounting seat, and the mounting seat is arranged on an energy storage mechanism with a fixed position;

[0010] When the drawer is in a fully opened state, the gear is located outside the inner end of the rack, the two are disengaged, and the energy storage mechanism makes the mounting seat at a second height higher than the first height, the first height being the height of the mounting seat when the gear is meshed with the rack;

[0011] When the fully opened drawer is pushed inward, the gear and rack can be switched from a disengaged state to an engaged state;

[0012] The controller is connected to the position detection mechanism, and controls the motor to drive the drawer to close when the position detection mechanism detects that the mounting base is at a first height.

[0013] Preferably, in the storage device, the drawer is fixed to the frame via drawer slide rails located on both sides thereof, the drawer slide rails include a fixed rail fixed to the frame and a telescopic rail that can be extended and retracted relative to the fixed rail, and the telescopic rails connect the drawers.

[0014] Preferably, in the storage device, the drawer comprises a base plate, a weighing sensor is arranged on the base plate, and a storage box is arranged on the weighing sensor.

[0015] Preferably, in the storage device, the drawer comprises a base plate, a weighing sensor is arranged on the base plate, a limiting groove extending in a direction consistent with the opening and closing direction of the drawer is arranged on the weighing sensor, and a storage box is arranged in the limiting groove.

[0016] Preferably, in the storage device, the storage box has a protruding portion near the end, the base plate is provided with a supporting member, a rotating member is pivotally connected to the supporting member, a hook body matching the protruding portion is formed on the side of the rotating member, and the rotating member is normally kept in a position where it can hook the protruding portion under the action of gravity.

[0017] Preferably, in the storage device, a boss is formed on the side of the rotating member and is located below the hook body, and a blocking portion corresponding to the position of the boss is provided on the frame where the drawer is located. When the base plate is in a fully closed position, the boss abuts against the blocking portion to disengage the hook body from the protruding portion.

[0018] Preferably, in the storage device, there are two protruding parts and they are located on both sides of the drawer, each protruding part matches with a rotating member, and the two rotating members are respectively pivoted to the waist-shaped holes formed on a vertical plate, and the hook extends to the outside of the inner side of the vertical plate, and the vertical plate is perpendicular to the opening and closing direction of the drawer.

[0019] Preferably, in the storage device, the drawer is limited to a fully closed state by the cooperation of an automatic lock and a locking groove or a locking hole.

[0020] Preferably, in the storage device, the motor is fixed on the mounting seat, and the mounting seat is movably arranged on a group of guide pillars. The energy storage mechanism is a spring which is sleeved on the guide pillars and located below the mounting seat, one end of the spring is connected to the mounting seat, and the other end is fixed.

[0021] Preferably, in the storage device, the rack is fixed to the bottom of the drawer, and the height of the tooth tops of a group of teeth of the tooth segment at the inner end of the rack decreases linearly from the inner end to the outer end.

[0022] A method for closing a drawer of a storage device comprises the following steps:

[0023] S1, providing any of the above storage devices, and fully opening the drawer;

[0024] S2, applying a thrust to the drawer so that the rack on the drawer applies pressure to the gear until the position detection mechanism detects the mounting seat and the motor starts to drive the drawer to close.

[0025] The advantages of the technical solution of the present invention are mainly reflected in:

[0026] This solution is achieved by setting one of the motor or the rack on the mounting seat, and setting the mounting seat on the energy storage mechanism. When the drawer is opened, the gear is decoupled from the rack and the mounting seat is located in a high position. When the gear is engaged with the rack, the mounting seat is located in a low position. The position of the mounting seat is determined in combination with a position detection device. When it is in the low position, the motor is controlled to start and the drawer is automatically closed. When the drawer needs to be closed, it is only necessary to apply a thrust to any position at the front end of the drawer. Compared with pressing a button at a specific position, it is easier to operate and more suitable for pharmacy applications. At the same time, when the staff in front of the drawer collides with the open drawer, the drawer can automatically trigger the motor under the action of the thrust to close the drawer, effectively avoiding a hard collision between the drawer and the staff and fully improving safety.

[0027] The drawer structure of the present invention separates the storage box from the driving mechanism, and the storage box can be easily removed for replacement.

[0028] The drawer of this solution has a weighing function, which can know the weight of the items in the drawer in real time. When taking out materials, the weight of the taken out items can be effectively known. It is especially suitable for the storage and use of items that need to be weighed, such as medicinal materials.

[0029] The drawer of the present solution is provided with a limiting groove, which can effectively limit the material box in a horizontal direction to avoid its position displacement. At the same time, an extension portion is provided on the storage box, which, combined with a hook body matching the extension portion, can fully limit the storage box on the material box to avoid its relative movement to the limiting groove during the opening and closing process of the drawer, thereby ensuring the effective opening and closing of the drawer.

[0030] Combined with the boss and the limiting portion, the hook body and the extending portion can be effectively unhooked when the drawer is closed, so that the storage box can be conveniently pulled out in the limiting groove to facilitate replacement of the storage box or addition of materials into the storage box.

[0031] The two rotating members are arranged on the same vertical plate, which simplifies the structure. At the same time, the vertical plate can also effectively limit the position of the storage box, so that the extension part on the storage box can quickly correspond to the hook body, which is conducive to improving the use efficiency.

[0032] The locking groove or hole is provided to cooperate with the automatic lock, so that the base plate can be effectively locked in a closed state, thereby preventing the drawer from being pulled open and ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a front view of the storage device of the present invention;

[0034] Figure 2 is a three-dimensional diagram of the storage device of the present invention (the energy storage mechanism is hidden in the diagram);

[0035] Figure 3 This is a side view of the storage device of the present invention (the side panel and the guide rail on one side are hidden in the figure, and the hook is in a state that the extended part can be restricted. The left side of the figure is the outer end of the drawer, and the right side is the inner end of the drawer)

[0036] Figure 4 is a partial exploded view of the storage device of the present invention (a side panel and an energy storage mechanism on one side are hidden in the figure);

[0037] Figure 5 is a rear end view of the storage device of the present invention;

[0038] Figure 6 yes Figure 3 A magnified view of the middle A area (the hook in the figure limits the protruding part);

[0039] Figure 7 It is a partial schematic diagram of a state in which the boss of the rotating member in the storage device of the present invention abuts against the blocking portion to cause the hook body and the extending portion to be unhooked. DETAILED DESCRIPTION

[0040] The purpose, advantages and features of the present invention will be illustrated and explained by the non-limiting description of the following preferred embodiments. These embodiments are only typical examples of the application of the technical solution of the present invention, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0041] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of description and simplified 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 cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0042] The storage device disclosed by the present invention is described below in conjunction with the accompanying drawings. Figure 1 -Attached Figure 3 As shown, it includes a frame 100, a guide rail 200, a drawer 300, a driving mechanism 400, a position detection mechanism 500, a mounting seat 600, an energy storage mechanism 700 and a controller (not shown in the figure).

[0043] As attached Figure 1 As shown, the frame 100 includes at least two side panels 110, and the two side panels 110 are connected by a bottom panel 120 located at the bottom thereof. A guide rail 200 is respectively arranged on the inner side of the two side panels 110, and the two guide rails 200 are of the same height and arranged in parallel. The specific structure of the guide rail 200 is a known technology. In one embodiment, the guide rail 200 can be various known drawer slides, such as the structure disclosed in existing patents with application numbers 200820085449.2, etc. The fixed rail 210 of the drawer slide is fixedly connected to the side panels 110, and the telescopic rail 220 of the drawer slide that can be telescoped relative to the fixed rail 210 is connected to the outer side of the drawer 300, so that the drawer 300 can be pulled out from the frame 100 for taking things.

[0044] Of course, in other embodiments, the guide rail 200 may be replaced by a common guide rail, and the drawer 300 may be slidably arranged on the guide rail by a sliding member such as a slider. At this time, the drawer 300 may be located above the two guide rails, or the two guide rails may be located on both sides of the drawer 300.

[0045] The drawer 300 may be any conventional drawer known in the art, for example, a rectangular trough. Figure 4As shown, the drawer 300 includes a base plate 310 connected to the two telescopic rails 220, the base plate 310 is perpendicular to the two side panels 110 and close to the upper ends of the two side panels 110, and a storage box 320 is detachably provided on the base plate 310. The specific shape of the storage box 320 can be set according to different needs, preferably a rectangular trough body, and the storage box 320 can be connected to the base plate 310 by screws, and can also be connected to the base plate 310 by a snap-on manner.

[0046] As attached Figure 4 , Attachment Figure 5 As shown, in some application scenarios, it is necessary to know the weight of the items in the storage box 320, so in a more optimal structure, a mounting groove 311 is provided on the substrate 310, and a weighing sensor 330 is provided in the mounting groove 311. The specific structure of the weighing sensor 330 is a known technology and is not described here. The top surface 331 of the weighing sensor 330 protrudes above the top surface 312 of the substrate 310, and the storage box 320 can be fixed in the screw hole 332 on the top surface of the weighing sensor 330 by screws, and the weighing sensor 330 is located at the bottom center of the storage box 320, so as to ensure the accuracy of weighing. By setting the weighing sensor, the weight of the items in the storage box and the weight of the materials taken from the storage box each time can be known in real time, which is convenient for accurate control of the amount of material taken. Of course, the weighing sensor 330 is not necessary, and the storage box can also be directly arranged on the substrate 310.

[0047] In a more preferred embodiment, as shown in the attached Figure 4 As shown, the storage box 320 is not directly fixed on the weighing sensor 330. In order to facilitate the replacement of the storage box 320, a limiting groove 340 is provided on the weighing sensor 330. The weighing sensor 330 is located at the bottom center of the limiting groove 340. The center of the bottom plate of the limiting groove 340 is formed with a connecting hole 342 for connecting the weighing sensor 330. The extending direction of the limiting groove 340 is consistent with the opening and closing direction of the drawer 300. The inner end 341 of the limiting groove 340 (here, "inside" is defined as the direction inward of the drawer, and "outside" is defined as the direction outward of the drawer) is flush with the inner end 113 of the side panel 110, and the outer end of the limiting groove 340 extends close to the outer end of the side panel 110 but maintains a certain distance. The storage box 320 is placed in the limiting groove 340. At this time, the storage box 320 can be quickly removed from the limiting groove 340 for replacement by pulling the storage box 320 to slide along the limiting groove 340. At the same time, in order to facilitate the storage box 320 to enter the limiting groove 340, both ends of the limiting groove 340 are bell mouths.

[0048] However, in this structure, the storage box 320 and the limiting groove 340 are not fixed. Therefore, during the movement of the drawer, there is a risk that the storage box 320 slides relative to the limiting groove 340. In order to avoid this risk, a better way is to confine the storage box 320 in the limiting groove 340 through a limiting structure.

[0049] The limiting mechanism may have a variety of feasible modes. For example, in one mode, a locking pin (not shown in the figure) driven by a cylinder (not shown in the figure) is provided on the frame, and a locking hole or slot (not shown in the figure) matching the locking pin is provided on the storage box 320. When the storage box 320 is located in the limiting slot 340, the cylinder shaft of the cylinder extends to drive the locking pin to extend into the locking hole or slot on the storage box 320, thereby limiting the sliding of the storage box 320. When the storage box 320 needs to be pulled out, the cylinder drives the locking pin to be pulled out from the locking slot or hole.

[0050] However, the method of using a cylinder to drive the locking pin has high parts cost and operating cost, and requires a more complex structure. In a better way, it can be achieved through a passive structure, such as the attached Figure 4 As shown, the storage box 320 has an extension 321 located at the outer end and protruding downward, and the base plate 310 is provided with a support member 350, and a rotating member 360 is pivotally connected to the support member 350. A hook 361 matching the extension 321 is formed on the side of the rotating member 360. The rotating member 360 is a plate, and the hook 361 is formed at the upper position of the side, and the hook 361 is arranged upward. Figure 5 As shown, under normal circumstances, the rotating member 360 keeps the hook body 361 at a position where it can hook the protruding portion 321 under the action of gravity, that is, under normal circumstances, the height of the top 3611 of the hook body 361 is higher than the bottom 3211 of the protruding portion 321, and when the protruding portion 321 is located in the hook groove 3612 of the hook body 361, the hook body 361 can limit the protruding portion 321 so that the storage box 320 cannot slide relative to the limiting groove 340.

[0051] The extension portion 321 and the rotating member 360 may be only one. Figure 1 , Attachment Figure 4As shown, there are two extensions 321 located on both sides of the storage box 320, there are two rotating members 360, and one rotating member 360 corresponds to one extension 321, and the support member 350 where the two rotating members 360 are located can be two independent components. More preferably, the support member 350 where the two rotating members 360 are located is a vertical plate, and the vertical plate is perpendicular to the opening and closing direction of the base plate 310 and the drawer 300, and the vertical plate is a certain distance from the front end of the base plate 310. The vertical plate and the base plate 310 are also provided with a cover body (not shown in the figure) that encloses them to form a rectangular space located in front of the vertical plate, and the top of the rectangular space can be open for storing items.

[0052] At this time, the vertical plate can not only be used to install the rotating member 360, but also limit the position of the storage box 320. When the storage box 320 is against the vertical plate, the extension portion 321 on the storage box 320 can be conveniently located in the hook groove 3612 of the hook body 361 to achieve quick positioning.

[0053] As attached Figure 1 , Attachment Figure 6 As shown, two vertically extending waist-shaped holes 351 are formed on both sides of the vertical plate, and the rotating member 360 is pivotally connected in the waist-shaped hole 351. The axis of the rotating shaft 370 pivotally connected to the rotating member 360 and the vertical plate is parallel to the base plate 310 and perpendicular to the opening and closing direction of the drawer 300. The rotating shaft 370 is at a height equivalent to that of the hook body 361 and is close to the hook body 361.

[0054] At this time, since the hook body 361 will continue to restrict the extension portion 321, when the storage box needs to be moved out of the limiting groove 340, the only way is to grab and lift to disengage the extension portion 321 from the hook body 361, and the storage box 320 cannot be pulled out of the limiting groove. Therefore, in order to conveniently pull the storage box 320 out of the limiting groove 340 by pulling when the drawer is in a fully closed state.

[0055] Better, as attached Figure 6 , Attachment Figure 7 As shown, each rotating member 360 has a boss 363 formed on its side below the hook 361, the front end of the boss 363 extends outside the front end of the hook 361, and the front end is arc-shaped, and a blocking portion 111 corresponding to the position of the boss 363 is provided on the side plate 110 of the frame 100. Figure 7As shown, the base plate 310 is in the fully closed position, the boss 363 abuts against the front end surface of the blocking portion 111 to disengage the hook body 361 from the extension portion 321. At this time, the top of the hook body 361 is lower than the bottom surface of the extension portion 321, so that the movement of the storage box 320 is not restricted by the hook body 361, and the storage box 320 can be drawn out of the limiting groove 340. When the drawer is opened, the boss 362 is not in contact with (separated from) the blocking portion 111, and the rotating member 360 rotates under its own gravity until the top 3611 of the hook body 361 is higher than the bottom 3211 of the extension portion 321, so that the hook body 361 that moves with the base plate 310 can hook the extension portion on the storage box and drive the storage box to open together.

[0056] The drive mechanism 400 for driving the drawer 300 to open may be any known feasible structure, such as the structure disclosed in Application No. 201710396978.8 that uses the principle that like poles of magnets repel each other and opposite poles attract each other to realize the opening and closing of the drawer 300. Alternatively, the drive mechanism 400 may also be a structure using a motor and a transmission mechanism as disclosed in Application No. 201621463222.8 or 201711180449.0 or 201720247483.4.

[0057] As attached Figure 2 , Attachment Figure 3 As shown, in a more preferred embodiment, the driving mechanism 400 includes a motor 410, a gear 420 driven by the motor to rotate, and a rack 430 matched with the gear. One of the motor 410 and the rack 430 is arranged on the drawer 300, and the other is arranged on the mounting seat 600. The preferred structure is that the rack 430 is arranged on the drawer 300 and located at the bottom of the drawer 300, and its extension direction is consistent with the opening and closing direction of the drawer, and the tooth top height of a group of teeth of the tooth segment 431 at the inner end of the rack 430 decreases linearly from the inner end to the outer end, that is, the tooth top of a group of teeth of the tooth segment 431 forms an inclined surface, so that the gear 420 on the mounting seat at the second height can smoothly switch from the disengaged state to the meshing state with the rack 430. The maximum opening and closing stroke of the drawer driven by the motor 410 can also be controlled by a proximity switch, etc., which is a known technology and will not be described in detail here.

[0058] As attached Figure 2 , Attachment Figure 3As shown, the motor 410 is fixed on the mounting seat 600, the mounting seat 600 is located at the bottom of the drawer 300 and between the two side panels 110, the mounting seat 600 is movably arranged on a group of guide posts 800, and a cover plate 810 is provided on the top cover of a group of guide posts 800 to prevent the mounting seat 600 from moving out from the top of the guide posts 800, the number of the guide posts 800 is set as required, preferably 4 and vertically fixed on the bottom plate 120 of the frame and close to the outer end of the frame, the energy storage mechanism 700 is a spring sleeved on the guide post 800 and located below the mounting seat 600, one end of the spring is connected to the mounting seat, and the other end is fixed to the bottom plate of the frame, of course, the spring can also be replaced by other elastic materials, such as metal shrapnel or elastic telescopic guide posts disclosed in application number 201720893283.6, etc. Moreover, the guide posts 800 are not necessary.

[0059] When the drawer 300 is in a fully opened state, the gear 420 is located outside the inner end of the rack, the two are disengaged, and the energy storage mechanism 700 makes the mounting seat 600 at a second height higher than the first height, and the first height is the height of the mounting seat 600 when the gear 420 and the rack 430 are engaged; when the drawer 300 in the fully opened state is subjected to an inward thrust, the gear 420 and the rack 430 switch from a disengaged state to an engaged state.

[0060] The controller is connected to the position detection mechanism 500, and the position detection mechanism 500 is used to determine whether the mounting seat 600 is at a first height. When the position detection mechanism detects that the mounting seat is at the first height, the controller controls the motor 410 to drive the drawer 300 to close.

[0061] When the drawer 300 is in a closed state, the rack 430 meshes with the gear 420 and applies downward pressure to the gear 420, which is sequentially transmitted to the energy storage mechanism 700 by the motor 410 and the mounting seat 600. The energy storage mechanism 700 deforms and accumulates energy, and its reaction force causes the mounting seat 600 to be at a first height. When the motor 410 drives the drawer 300 to switch from a closed state to a fully open state, the motor 410 drives the gear 420 to rotate, and the gear meshes with different teeth of the rack 430, so that the rack 430 moves outward to drive the drawer 300 to open. When the inner end of the rack 430 is separated from the gear 420, the accumulated energy of the energy storage mechanism 700 is released to restore the original state, and its reaction force lifts the mounting seat 600 upward to a second height. When the drawer 300 needs to be closed, the drawer 300 is pushed inward so that the rack 430 engages with the gear 420. At this time, the rack 430 presses down the mounting seat 600 again, so that the position detection mechanism 500 detects that the mounting seat 600 is at the first height, and the controller controls the motor 410 to drive the drawer 300 to close.

[0062] When the drawer 300 is in a fully closed state, in order to prevent it from being pulled open from the outside of the drawer 300, as shown in the attached Figure 2 , Attachment Figure 3 As shown, the drawer 300 is limited to a fully closed state by the automatic lock 900 and the locking groove or hole. Specifically, a locking hole 314 is provided on the base plate 310 of the drawer 300, and the locking hole 314 is close to the inner end of the base plate 310. The automatic lock 900 can be various known electronic locks, and its specific structure is a known technology and is not described here. The automatic lock 900 is fixed on the mounting plate 130 at the inner end of the frame 100, and its lock tongue faces upward and directly faces the locking hole 314. Of course, in other embodiments, the automatic lock 900 can also be fixed on the base plate 310, and the locking hole 314 is provided on the frame.

[0063] As attached Figure 3 As shown, the mounting plate 130 is perpendicular to the two side plates 110 and is vertically arranged, and has a protrusion 131, the top surface of the protrusion 131 extends close to the top surface of the base plate 310, and a notch 315 opposite to the protrusion is formed on the base plate 310, so that the protrusion can limit the final closed position of the base plate 310.

[0064] The position detection mechanism 500 can adopt various known feasible methods. For example, in one method, the height of the mounting base 600 can be determined by a distance measuring sensor. In another method, as shown in the attached Figure 2As shown, a trigger 510 is arranged on the mounting seat, and a sensor (not shown in the figure) for sensing the trigger 510 is arranged on the frame. The sensor can be various known proximity switches, through-beam sensors, etc., which are arranged on a mounting frame 520 fixed on the frame 100. When the sensor senses the trigger 510, it is determined that the mounting seat 600 is at a first height, and the controller controls the motor to drive the drawer 300 to close. When the sensor does not sense the trigger, it is determined that the mounting seat 600 is at a second height, and the controller controls the motor to stop.

[0065] The following is a brief description of the method for using the above storage device. The opening of the drawer 300 can be triggered by various existing feasible methods, such as setting a trigger button on the frame to trigger the motor to open, or controlling the motor to start the drawer opening operation through a touch screen or voice control or other triggering methods. The motor starts to open the drawer, and before the motor starts, the controller retracts the lock tongue of the automatic lock to release the restriction on the substrate. When the position detection mechanism cannot detect the mounting seat, the motor is controlled to stop. When the opened drawer needs to be closed, an inward thrust is applied to the drawer so that the rack and gear on the drawer 300 are switched from a disengaged state to an engaged state. At this time, the position detection mechanism 500 detects the mounting seat 600, and the controller controls the motor to start and drive the drawer 300 to close. After the drawer 300 is closed, the controller controls the lock tongue of the automatic lock to extend to lock the substrate.

[0066] There are many implementation methods of the present invention, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A storage device, comprising a frame, a guide rail, a drawer, a driving mechanism for driving the drawer to open and close, and a controller, wherein the driving mechanism comprises a motor, a gear driven by the motor, and a rack matched with the gear, characterized in that: One of the motor and the rack is arranged on the drawer, and the other is arranged on a mounting seat, and the mounting seat is arranged on an energy storage mechanism with a fixed position; When the drawer is in a fully opened state, the gear is located outside the inner end of the rack, the two are disengaged, and the energy storage mechanism makes the mounting seat at a second height higher than the first height, the first height being the height of the mounting seat when the gear is meshed with the rack; When the fully opened drawer is pushed inward, the gear and rack can be switched from a disengaged state to an engaged state; The controller is connected to a position detection mechanism, and when the position detection mechanism detects that the mounting base is at a first height, the controller controls the motor to drive the drawer to close.

2. The storage device according to claim 1, characterized in that: The drawer comprises a base plate, a weighing sensor is arranged on the base plate, a storage box is arranged on the weighing sensor, or a limiting groove whose extending direction is consistent with the opening and closing direction of the drawer is arranged on the weighing sensor, and a storage box is arranged in the limiting groove.

3. The storage device according to claim 1, characterized in that: The drawer includes a base plate, a limiting groove is provided on the base plate, and the extension direction is consistent with the opening and closing direction of the drawer. A storage box is arranged in the limiting groove, and the storage box has a protruding portion close to the end. A supporting member is provided on the base plate, and a rotating member is pivotally connected to the supporting member. A hook body matching the protruding portion is formed on the side of the rotating member, and the rotating member keeps the hook body in a position where it can hook the protruding portion under the action of gravity in a normal state.

4. The storage device according to claim 3, characterized in that: The limiting groove is arranged on the weighing sensor located on the substrate.

5. The storage device according to claim 3, characterized in that: A boss located below the hook body is formed on the side of the rotating member, and a blocking portion corresponding to the position of the boss is provided on the frame where the drawer is located. When the base plate is in a fully closed position, the boss abuts against the blocking portion to disengage the hook body from the protruding portion.

6. The storage device according to claim 5, characterized in that: There are two protruding parts located on both sides of the drawer, each protruding part matches a rotating member, and the two rotating members are respectively pivoted to waist-shaped holes formed on a vertical plate. The hook body extends outward from the inner side of the vertical plate, and the vertical plate is perpendicular to the opening and closing direction of the drawer.

7. The storage device according to any one of claims 1 to 6, characterized in that: The drawer is limited to a fully closed state through the automatic lock and the locking groove or hole.

8. The storage device according to any one of claims 1 to 6, characterized in that: The motor is fixed on the mounting seat, and the mounting seat is movably arranged on a group of guide pillars. The energy storage mechanism is a spring sleeved on the guide pillars and located below the mounting seat. One end of the spring is connected to the mounting seat, and the other end is fixed.

9. The storage device according to any one of claims 1 to 6, characterized in that: The rack is fixed at the bottom of the drawer, and the height of the tooth tops of a group of teeth of the tooth segment at the inner end of the rack decreases linearly from the inner end to the outer end.

10. A method for closing a drawer of a storage device, characterized in that: The steps include: S1, providing a storage device as described in any one of claims 1 to 9, and fully opening the drawer; S2, applying a thrust to the drawer so that the rack on the drawer applies pressure to the gear, until the position detection mechanism detects that the mounting seat is at a first height, the motor starts to drive the drawer to close.

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