External drawer of medical cart

Abstract

The invention relates to the technical field of medical equipment accessories, in particular to a medical cart externally-hung drawer which comprises a drawer frame, a drawer body and a locking module. The drawer frame body is used for being connected with a medical trolley; the drawer body is arranged on the drawer frame body in a sliding manner; the locking module comprises a first locking assembly, a second locking assembly and a linkage assembly, the linkage assembly is arranged on the drawer frame body, the first locking assembly is arranged between the drawer frame body and the medical cart, the first locking assembly is connected with the linkage assembly, and the second locking assembly is connected with the linkage assembly. The second locking assembly is arranged between the linkage assembly and the drawer body, and the linkage assembly is used for enabling the first locking assembly and the second locking assembly to be synchronously locked. And the first locking assembly and the second locking assembly are respectively unlocked or synchronously unlocked. The device has the effects of being convenient to install and safe to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment accessories, and in particular to a medical cart externally-hung drawer. BACKGROUND

[0002] At present, in the modern medical environment, as a kind of movable multifunctional platform, the functional modularization of the medical cart is an important development trend. Medical staff needs to frequently install, replace or remove various functional accessories such as medicine drawers and monitoring equipment modules on the cart according to the task requirements of different departments. Therefore, it is crucial to improve medical efficiency and ensure operation safety to realize the quick, safe and convenient mounting and dismounting of these modules.

[0003] In the related art, the existing technologies for fixing externally-hung modules on medical carts mainly fall into two categories. The first category is to use traditional fasteners such as screws and nuts for connection. The second category is quick-release structures designed to improve the mounting and dismounting efficiency, such as using some simple buckles or hooks for fixation.

[0004] For the above-mentioned related technologies, when using fasteners such as screws and nuts for connection, the installation and dismounting process is tedious and requires special tools, which not only consumes time and effort, but also cannot meet the high-frequency and quick-response use scenarios. Although the simple buckle type or hook type connection is faster to install, the structure is simple and the locking is unreliable. When the cart is moving, colliding or vibrating, there is a risk of accidental loosening and falling of the entire module, which may cause equipment damage or medical accidents, seriously affecting the safety of medical work. Therefore, there is a problem of being difficult to balance the installation convenience and use safety. SUMMARY

[0005] In order to balance the installation convenience and use safety, the present application provides a medical cart externally-hung drawer.

[0006] The medical cart externally-hung drawer provided by the present application adopts the following technical solution: A medical cart externally-hung drawer, comprising: a drawer frame body for connecting with a medical cart; a drawer body slidingly arranged on the drawer frame body; a locking module comprising a first locking assembly, a second locking assembly and a linkage assembly, the linkage assembly being arranged on the drawer frame body, the first locking assembly being arranged between the drawer frame body and the medical cart, the first locking assembly being connected with the linkage assembly, the second locking assembly being arranged between the linkage assembly and the drawer body, the linkage assembly being used for synchronously locking the first locking assembly and the second locking assembly, and enabling the first locking assembly and the second locking assembly to be unlocked respectively.

[0007] By adopting the technical scheme, when the drawer body and the drawer frame body need to be installed, the drawer body and the drawer frame body can be locked synchronously in one operation, thereby ensuring the convenience of installation and the stability of connection. When being unlocked, the linkage assembly can be unlocked only for the drawer body according to a preset mode for daily use, or the drawer body and the drawer frame body can be unlocked synchronously under specific authorization for overall disassembly, thereby effectively distinguishing the regular operation and the disassembly operation through the double and selectable unlocking mechanism, and thereby facilitating the avoidance of safety accidents caused by accidental touch, and improving the safety of use.

[0008] Optionally, the first locking assembly comprises a boss and a locking piece, the boss is arranged on the medical cart, the boss is provided with a locking groove, the top of the drawer frame body is provided with a slot, the boss is slidably inserted into the slot, the locking piece is slidably arranged on the drawer frame body, the linkage assembly comprises a transmission slider, the transmission slider is slidably arranged on the drawer frame body, one end of the transmission slider is connected with the second locking assembly, the other end of the transmission slider is connected with the locking piece, when the transmission slider moves, the transmission slider can drive the second locking assembly to lock or unlock the drawer body, and can drive the locking piece to lock or unlock the drawer frame body and the boss.

[0009] By adopting the technical scheme, the slot at the top of the drawer frame body and the boss on the medical cart are slidably inserted, one end of the transmission slider is connected with the second locking assembly, and the other end of the transmission slider is connected with the locking piece, when the transmission slider moves, the second locking assembly can be driven to lock the drawer body, and the locking piece can be driven to engage or disengage with the locking groove on the boss, thereby realizing the locking or unlocking of the drawer frame body and the boss, and realizing the synchronous locking, separate unlocking or synchronous unlocking of the drawer body and the drawer frame body, thereby meeting the locking and unlocking requirements of the medical cart externally hung drawer in different use scenarios, and improving the convenience and safety of use.

[0010] Optionally, the drawer frame body is provided with a sliding groove, the locking piece is slidably arranged in the sliding groove, the first locking assembly comprises a first elastic piece, the first elastic piece is arranged in the sliding groove and connected with the locking piece, and the first elastic piece is used to make the locking piece disengage from the locking groove. The transmission slider is provided with a guide groove along the sliding direction of the transmission slider, a guide slope is arranged on the inner wall of the guide groove, one end of the locking piece is inserted into the guide groove and in sliding contact with the guide slope, and the transmission slider can drive the locking piece to be inserted into the locking groove through the guide slope.

[0011] By adopting the technical scheme, the first elastic member is arranged in the sliding groove and connected with the locking member, so that the locking member is in a state of being separated from the locking groove by default, thereby providing a basis for unlocking the drawer frame body and the boss. The inner wall of the guide groove on the transmission sliding block is provided with a guide slope, and one end of the locking member is in sliding contact with the guide slope. When the transmission sliding block moves, the guide slope interacts with the locking member. Due to the fact that one end of the guide slope is high and the other end is low, the movement of the transmission sliding block will make the locking member move in the vertical direction under the action of the guide slope and overcome the elastic force of the first elastic member, thereby driving the locking member to be inserted into the locking groove, realizing the locking of the drawer frame body and the boss, and enabling the connection between the drawer frame body and the medical cart to be flexibly locked and unlocked according to the movement of the transmission sliding block, thereby ensuring the stability of the medical cart with the externally-hung drawer and the convenience of operation.

[0012] Optionally, the transmission sliding block is provided with an accommodating groove, the accommodating groove is communicated with the guide groove, the accommodating groove is provided with a shielding block and a reset member respectively, the reset member can drive the shielding block to be inserted into or extracted from the guide groove, and when the shielding block is inserted into the guide groove, the shielding block can shield the guide slope and separate a horizontal groove from the guide groove, and at this time, the locking member is arranged in the horizontal groove in a sliding mode.

[0013] By adopting the technical scheme, when the shielding block is inserted into the guide groove, the guide slope is shielded and a horizontal groove is separated, so that the locking member slides in the horizontal groove. When the drawer body is unlocked normally, due to the shielding of the shielding block, the locking member can only slide horizontally in the horizontal groove, and the vertical height does not change, thereby ensuring that the drawer frame body and the boss of the medical cart are locked, which helps to avoid the entire module from being disassembled due to misoperation, physically eliminates the risk of misdisassembly, and improves the safety of use. When the entire module needs to be disassembled, the shielding block is extracted from the guide groove by controlling the reset member, and the guide slope is exposed, at this time, the first locking assembly and the second locking assembly can be unlocked synchronously, thereby completing the disassembly of the module, realizing the strict distinction between “normal unlocking (only opening the drawer)” and “authorized unlocking (disassembling the module)”, and the operation process is more reliable and convenient.

[0014] Optionally, the reset member includes a memory alloy wire, the memory alloy wire is connected with the inner wall of the accommodating groove and the shielding block respectively, the drawer frame body is provided with a micro switch, the micro switch is electrically connected with the memory alloy wire, the micro switch is used for controlling the power supply to the memory alloy wire, and the memory alloy wire shrinks when heated by the power supply to drive the shielding block to be extracted from the guide groove.

[0015] By adopting the technical scheme, when the whole module needs to be disassembled, the operator presses the micro switch, the micro switch controls the power supply of the memory alloy wire, the memory alloy wire shrinks after being heated to drive the shielding block to be extracted from the guide slot, so that the complete guide slope is completely exposed. At this time, the operator moves the transmission slider, so that the locking part smoothly slides from the high place to the low place of the guide slope under the pulling force of the first elastic part, so that the locking part is completely shrunk downward, completely separates from the locking groove of the boss, and the frame is unlocked, thereby realizing the disassembly of the whole external drawer module. The authorized operation of disassembling the module is upgraded to "electronic instruction". Compared with the external mechanical lever, the built-in electric control mode is not easy to be found and operated by irrelevant personnel, the safety of authorized unlocking is improved, the external components are avoided to be cumbersome and potential damage risk, and the two operations of "normal unlocking (only opening the drawer)" and "authorized unlocking (disassembling the module)" are strictly distinguished, so that safety accidents caused by misoperation are prevented.

[0016] Optionally, the reset part comprises a reset spring, the reset spring is arranged between the inner wall of the accommodating groove and the shielding block, and the reset spring is used to drive the shielding block to be inserted into the guide slot.

[0017] By adopting the technical scheme, the reset spring is arranged between the inner wall of the accommodating groove and the shielding block, and the elastic restoring force of the spring can reliably drive the shielding block to be inserted into the guide slot. When the shielding block is inserted into the guide slot, the guide slope can be shielded and a horizontal groove can be separated, so that when the drawer body is normally operated and unlocked, the locking part can only slide in the horizontal groove, the locking state of the drawer frame and the medical cart is maintained, misdisassembly is prevented, and the safety of use is improved. After the authorized disassembly operation is completed, the reset spring can drive the shielding block to be automatically reset, so that the next installation is prepared, and the operation of the whole system is more convenient and efficient.

[0018] Optionally, the second locking assembly comprises a clamping hook and a limiting block, the clamping hook is arranged on the transmission slider, the limiting block is arranged on the drawer body, a limiting groove is arranged on the limiting block, and the clamping hook can be inserted into the limiting groove.

[0019] By adopting the technical scheme, when the drawer body is pushed into the drawer frame, the clamping hook arranged on the transmission slider approaches the limiting block arranged on the drawer body along with the movement of the transmission slider. Since the limiting groove is arranged on the limiting block, the clamping hook can be inserted into the limiting groove, so that the drawer body is locked, the position of the drawer body in the drawer frame is stabilized, the drawer body is prevented from sliding out of the drawer frame under non-human operation, and the safety and stability of the drawer are improved.

[0020] Optionally, the second locking assembly comprises a first magnet and a second magnet, the first magnet is arranged on the transmission slider and close to the hook, and the second magnet is arranged on the limiting block, when the drawer body is pushed into the drawer frame, the first magnet and the second magnet attract each other to drive the transmission slider to move close to the limiting block.

[0021] By adopting the above technical scheme, when the drawer body is pushed into the drawer frame, the first magnet arranged on the transmission slider close to the hook and the second magnet arranged on the limiting block attract each other, thereby driving the transmission slider to move, so that the hook is inserted into the limiting groove of the limiting block, and automatic locking of the drawer body is realized, without the need for additional manual operation, thereby improving the convenience and efficiency of locking, and the locking process is stable and reliable by using the attraction between the magnets.

[0022] Optionally, a lifting rod is arranged on the medical cart, the boss is arranged on the lifting rod, and a gap slot is arranged on the drawer frame along the height direction of the drawer frame, the lifting rod passes through the gap slot and is attached to the inner wall of the gap slot.

[0023] By adopting the above technical scheme, the external drawer can be conveniently installed on the common lifting rod of the medical cart, and the gap slot is attached to the lifting rod, thereby increasing the stability and anti-torsion ability of the installation, and further improving the reliability of the connection.

[0024] Optionally, the medical cart further comprises a pop-out module, the pop-out module is arranged in the drawer frame and connected with the drawer body, and the pop-out module is used for popping out the drawer body outward after the drawer body is unlocked.

[0025] By adopting the above technical scheme, when the drawer body is unlocked, the pop-out module can provide an initial pop-out power to push the drawer body out by a small distance, so as to facilitate the user to grasp and pull out, and the operation is more labor-saving and smooth.

[0026] In summary, the present application has at least one of the following beneficial technical effects: 1. By the linkage locking module, synchronous locking of the drawer body and the drawer frame is realized, and by arranging the shielding block, the two modes of normal unlocking and authorized disassembly are strictly distinguished, thereby physically eliminating the risk of accidental falling of the entire module caused by misoperation, and the safety is high. 2. When installing, the magnetic attraction self-locking can be triggered by a simple pushing action, and the double locking is completed without any tool; when disassembling, the authorization is performed by using the memory alloy wire and the like electric control mode, the operation is intelligent, convenient and reliable, and the efficiency of assembly and maintenance is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic view of the overall structure of an external drawer of a medical cart according to Embodiment 1 of the present application.

[0028] Figure 2 is a schematic view of the partial structure of a medical cart and a locking module according to Embodiment 1 of the present application.

[0029] Figure 3 is a schematic view of the partial structure of an external drawer of a medical cart according to Embodiment 1 of the present application.

[0030] Figure 4 is a schematic view of the overall structure of an external drawer of a medical cart according to Embodiment 2 of the present application.

[0031] Figure 5 is a partial structural sectional view along the line A-A in Figure 4

[0032] Figure 6 is a partial structural sectional view along the line B-B in Figure 4

[0033] Figure 7 is a side view of an external drawer of a medical cart according to Embodiment 2 of the present application.

[0034] Figure 8 is a partial structural sectional view along the line D-D in Figure 7

[0035] Figure 9 is an enlarged view of the portion C in Figure 5

[0036] BRIEF DESCRIPTION OF THE DRAWINGS 1, drawer frame; 11, slot; 12, clearance slot; 13, hole site; 14, sliding slot; 15, micro switch; 2, drawer body; 3, locking module; 31, first locking assembly; 311, boss; 3111, locking slot; 312, locking piece; 313, first elastic piece; 32, second locking assembly; 321, hook; 322, limiting block; 3221, limiting slot; 323, first magnet; 324, second magnet; 33, linkage assembly; 331, transmission sliding block; 3311, guide slot; 3312, guide inclined surface; 3313, accommodating slot; 3314, horizontal slot; 332, shielding block; 333, reset piece; 3331, memory alloy wire; 3332, reset spring; 4, medical cart; 41, lifting rod; 42, equipment compartment; 5, ejection module. DETAILED DESCRIPTION

[0037] The present application is described in further detail below. Figures 1-9 The present application is described in further detail below.

[0038] ​​​​The embodiment of the application discloses a medical cart external drawer.

[0039] It should be noted that in the description of the application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the application.

[0040] Embodiment 1: Reference Figure 1 and Figure 2 A medical cart external drawer includes a drawer frame 1, a drawer body 2 and a locking module 3, wherein the drawer frame 1 is used to be connected with a medical cart 4, the drawer body 2 is slidably arranged on the drawer frame 1 through a slide rail, and the locking module 3 is used to lock and fix the drawer frame 1 with the medical cart 4 and to lock the drawer body 2 in the drawer frame 1, thereby achieving double locking and flexible unlocking of the drawer body 2 and the drawer frame 1, avoiding accidental loosening and falling of the module caused by misoperation, ensuring use safety, and improving loading and unloading efficiency.

[0041] The medical cart 4 is provided with a lifting rod 41, the lifting rod 41 is vertically arranged, and the top of the lifting rod 41 is provided with an equipment compartment 42. The locking module 3 includes a first locking assembly 31, and the first locking assembly 31 is used to lock the drawer frame 1 on the medical cart 4.

[0042] Reference Figure 2 and Figure 3 The first locking assembly 31 includes a boss 311 and a locking piece 312. The boss 311 is fixedly connected to the lifting rod 41 and located below the equipment compartment 42 (refer to Figure 1 In the embodiment, the boss 311 can be a structure extending from the lifting rod 41.

[0043] The boss 311 is provided with a locking groove 3111, and the top of the drawer frame 1 is provided with a slot 11. In the embodiment, the slot 11 is designed in a U shape, and the shape of the boss 311 matches that of the slot 11, so that the boss 311 can be slidably inserted into the slot 11, so as to mount the drawer frame 1 at a corresponding position of the medical cart 4. In other embodiments, the boss 311 can also be replaced by a similar guide rail structure, as long as the mounting and sliding of the drawer frame 1 can be realized.

[0044] In this embodiment, the locking member 312 can adopt a butterfly screw, and the locking groove 3111 is adapted to the design of the butterfly screw. The butterfly screw can pass through the drawer frame body 1 and be inserted into the locking groove 3111, and the fixing of the drawer frame body 1 and the boss 311 is realized through the threaded connection.

[0045] The drawer frame body 1 is provided with a clearance groove 12 along the height direction thereof, and the lifting rod 41 passes through the clearance groove 12 and is attached to the inner wall of the clearance groove 12, so that when the drawer frame body 1 is installed on the medical cart 4, it will not be hindered by the lifting rod 41, and can better cooperate with the structure of the medical cart 4.

[0046] Referring to Figure 1 , a plurality of hole positions 13 are formed in the side wall of the drawer frame body 1, and the external hanging member can be installed through the hole positions 13. The specific external hanging member can be a hand sanitizer rack, a glove box, a sharp tool box, a tourniquet box, a small garbage can rack, etc.

[0047] The implementation principle of the medical cart external hanging drawer of the embodiment of the present application is as follows: when it is necessary to install the external hanging drawer, first, the drawer frame body 1 is inserted towards the lifting rod 41, so that the lifting rod 41 is inserted into the clearance groove 12, and the boss 311 is inserted into the insertion groove 11. Then, the locking member 312 is inserted into the locking groove 3111 through the drawer frame body 1, so as to fix the drawer frame body 1. Then, the drawer body 2 is inserted into the drawer frame body 1, thereby completing the installation of the external hanging drawer.

[0048] Embodiment 2: referring to Figure 4 and Figure 5 The difference between this embodiment and embodiment 1 is that the locking module 3 further comprises a second locking assembly 32 and a linkage assembly 33, and in this embodiment, the locking module 3 is provided in two groups, and the two groups of locking modules 3 are symmetrically arranged along the clearance groove 12, so as to improve the stability of locking. In other embodiments, the locking module 3 can be provided in only one group, so as to improve the convenience of operation.

[0049] Referring to Figure 5 and Figure 6 In this embodiment, the locking member 312 is a positioning pin. The drawer frame body 1 is provided with a sliding groove 14, and the locking member 312 is slidingly arranged in the sliding groove 14. The first locking assembly 31 further comprises a first elastic member 313, which is arranged in the sliding groove 14 and connected with the locking member 312. In this embodiment, the first elastic member 313 is a spring, so as to facilitate the locking member 312 to be in a state of being separated from the locking groove 3111 by using the first elastic member 313.

[0050] A linkage component 33 is disposed on the drawer frame 1, and a second locking component 32 is disposed between the linkage component 33 and the drawer body 2. The linkage component 33 includes a transmission slider 331, which is slidably disposed on the drawer frame 1 and is capable of sliding on the drawer frame 1 in a direction perpendicular to the sliding direction of the drawer body 2. In this embodiment, the transmission slider 331 is slidably connected to the drawer frame 1 via a slide rail (not shown in the figure).

[0051] Reference Figure 7 and Figure 8 The transmission slider 331 has a guide groove 3311 along its sliding direction, and a guide slope 3312 is provided on the inner wall of the guide groove 3311, with one end of the guide slope 3312 being higher than the other end. One end of the locking member 312 is inserted into the guide groove 3311 and slides in contact with the guide slope 3312.

[0052] Reference Figure 6 and Figure 8 When the transmission slider 331 moves, it can drive the locking member 312 to be inserted into the locking groove 3111 through the guide inclined surface 3312, thereby realizing the locking of the drawer frame 1 and the boss 311.

[0053] A receiving groove 3313 is formed inside the transmission slider 331, and the receiving groove 3313 communicates with the guide groove 3311. A blocking block 332 and a reset member 333 are respectively disposed inside the receiving groove 3313. In this embodiment, the reset member 333 includes a shape memory alloy wire 3331 and a reset spring 3332. The shape memory alloy wire 3331 is connected to the inner wall of the receiving groove 3313 and the blocking block 332, respectively. The reset spring 3332 is disposed between the inner wall of the receiving groove 3313 and the blocking block 332, and is used to drive the blocking block 332 to be inserted into the guide groove 3311.

[0054] Reference Figure 6 and Figure 7 A microswitch 15 is provided on the drawer frame 1. The microswitch 15 is electrically connected to the shape memory alloy wire 3331 and is used to control the energization of the shape memory alloy wire 3331. In this embodiment, the shape memory alloy wire 3331 is configured to contract when heated by electricity to drive the blocking block 332 to be pulled out of the guide groove 3311.

[0055] Reference Figure 6 and Figure 8 When the blocking block 332 is inserted into the guide groove 3311, the blocking block 332 can block the guide ramp 3312 and separate the horizontal groove 3314 from the guide groove 3311. At this time, the locking member 312 is slidably disposed in the horizontal groove 3314. At this time, the movement of the transmission slider 331 will not drive the locking member 312 to move vertically, so that the drawer frame 1 remains locked.

[0056] When the drawer frame 1 needs to be disassembled, the micro switch 15 (see Figure 7 ) is pressed, the memory alloy wire 3331 is retracted, the blocking block 332 is extracted, and the guide slope 3312 is exposed. At this time, the operator moves the transmission slider 331, so that the locking piece 312 is smoothly slid from the high place to the low place of the guide slope 3312 under the action of the pulling force of the first elastic piece 313, so that the locking piece 312 is retracted downward as a whole, completely separates from the locking groove 3111 of the boss 311, and unlocks the drawer frame 1, thereby facilitating the disassembly of the drawer frame 1 from the boss 311.

[0057] Referring to Figure 6 and Figure 7 , it should be noted that the power source for energizing the memory alloy wire 3331 in this embodiment can be a small battery installed in the micro switch 15, or a built-in power supply on the medical cart 4, and then the micro switch 15 is connected with the power supply through the wire to supply power to the memory alloy wire 3331.

[0058] In other embodiments, the memory alloy wire 3331 can not be provided, but a push piece can be used. The push piece is connected with the blocking block 332, and one end of the push piece extends out of the transmission slider 331 and extends to the outside of the drawer frame 1, so as to facilitate the manual movement of the push piece by the operator, thereby driving the blocking block 332 to be extracted from the guide groove 3311.

[0059] Referring to Figure 5 and Figure 9 , the second locking assembly 32 includes a hook 321, a limiting block 322, a first magnet 323, and a second magnet 324. The hook 321 is fixedly connected to the transmission slider 331, and the limiting block 322 is fixedly connected to the drawer body 2 and located at the end of the drawer body 2. A limiting groove 3221 is formed in the limiting block 322, and the hook 321 can be inserted into the limiting groove 3221.

[0060] The first magnet 323 is installed on the transmission slider 331 and arranged close to the hook 321, and the second magnet 324 is installed on the limiting block 322. In this embodiment, the first magnet 323 and the second magnet 324 are both permanent magnets, so that when the drawer body 2 is pushed into the drawer frame 1, the first magnet 323 and the second magnet 324 attract each other, and the transmission slider 331 is driven to move close to the limiting block 322 by magnetic force, so that the hook 321 is inserted into the limiting groove 3221, and the locking of the drawer body 2 is completed.

[0061] In the embodiment, when the clamping hook 321 is inserted into the limiting groove 3221, one end of the transmission sliding block 331 extends out of the drawer frame body 1, so as to facilitate the operator to judge whether it is locked. When the drawer body 2 needs to be unlocked, the part of the transmission sliding block 331 extending out of the drawer frame body 1 is pressed, the transmission sliding block 331 is pushed to reset, the clamping hook 321 is separated from the limiting groove 3221, and thus the unlocking of the drawer body 2 is realized.

[0062] The drawer frame body 1 is provided with a pop-up module 5, and the pop-up module 5 is connected with the drawer body 2. In the embodiment, the pop-up module 5 is a gas spring, so that after the drawer body 2 is unlocked, the pop-up module 5 can pop out the drawer body 2 by a distance, facilitating the user to pull the drawer. In other embodiments, the pop-up module 5 can also be provided as a compression spring.

[0063] It should be noted that in the embodiment, the number of the drawer body 2 can be set according to actual needs, such as two or three, and the number of the second locking member 312 and the linkage assembly 33 is equal to and corresponds to the number of the drawer body 2, and the locking member 312 is connected with only one linkage assembly 33 closest to it.

[0064] The implementation principle of the embodiment 2 is that when the external drawer needs to be installed, the insertion slot 11 of the drawer frame body 1 is aligned with the boss 311 on the medical cart 4, is pushed to the bottom, and then the drawer body 2 is pushed in, the first magnet 323 and the second magnet 324 attract each other to drive the transmission sliding block 331 to move towards the limiting block 322, so that the clamping hook 321 is inserted into the limiting groove 3221, and the locking of the drawer body 2 is completed. In this process, the locking member 312 is inserted into the locking slot 3111 through the guide slope 3312, so as to realize the locking of the drawer frame body 1 and the boss 311. At this time, the shielding block 332 is inserted into the guide slot 3311 under the action of the reset spring 3332.

[0065] When the drawer body 2 needs to be pulled out of the drawer frame body 1, the transmission sliding block 331 is pushed in the opposite direction, the magnetic force is overcome, the clamping hook 321 is separated from the limiting groove 3221, the unlocking of the drawer body 2 is realized, the pop-up module 5 pops out the drawer body 2 by a distance, and the user can pull the drawer. In this process, the locking member 312 slides in the horizontal slot 3314 and does not move vertically, so as to keep the drawer frame body 1 locked.

[0066] When the drawer frame 1 needs to be disassembled, the micro switch 15 is pressed, the memory alloy wire 3331 is electrified, the memory alloy wire 3331 is contracted, the shielding block 332 is driven to be extracted from the guide groove 3311. The transmission sliding block 331 is pushed to reset, the locking piece 312 is smoothly slid from the high part of the guide inclined surface 3312 to the low part under the pulling force of the first elastic piece 313, so that the locking piece 312 is contracted downward as a whole, completely separates from the locking groove 3111, and unlocks the drawer frame 1, so that the drawer frame 1 is conveniently disassembled from the boss 311.

[0067] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An external drawer for a medical trolley, characterized in that, include: Drawer frame (1) for connection with medical trolley (4); The drawer body (2) is slidably mounted on the drawer frame (1); The locking module (3) includes a first locking component (31), a second locking component (32), and a linkage component (33). The linkage component (33) is disposed on the drawer frame (1). The first locking component (31) is disposed between the drawer frame (1) and the medical trolley (4). The first locking component (31) is connected to the linkage component (33). The second locking component (32) is disposed between the linkage component (33) and the drawer body (2). The linkage component (33) is used to lock the first locking component (31) and the second locking component (32) synchronously and to unlock the first locking component (31) and the second locking component (32) respectively.

2. The external drawer of the medical cart according to claim 1, characterized in that: The first locking assembly (31) includes a boss (311) and a locking member (312). The boss (311) is disposed on the medical trolley (4), and a locking groove (3111) is provided on the boss (311). A slot (11) is provided on the top of the drawer frame (1). The boss (311) is slidably inserted into the slot (11). The locking member (312) is slidably disposed on the drawer frame (1). The linkage assembly (33) includes a transmission slider (331). (331) The sliding block (331) is slidably disposed on the drawer frame (1). One end of the sliding block (331) is connected to the second locking assembly (32), and the other end of the sliding block (331) is connected to the locking member (312). When the sliding block (331) moves, the sliding block (331) can drive the second locking assembly (32) to lock or unlock the drawer body (2), and can drive the locking member (312) to lock or unlock the drawer frame (1) and the boss (311).

3. The external drawer of the medical cart according to claim 2, characterized in that: The drawer frame (1) is provided with a slide groove (14), and the locking member (312) is slidably disposed in the slide groove (14). The first locking component (31) includes a first elastic member (313), which is disposed in the slide groove (14) and connected to the locking member (312). The first elastic member (313) is used to disengage the locking member (312) from the locking groove (3111). The transmission slider (331) has a guide groove (3311) along its sliding direction. The inner wall of the guide groove (3311) is provided with a guide slope (3312). One end of the locking member (312) is inserted into the guide groove (3311) and slides in contact with the guide slope (3312). The transmission slider (331) can drive the locking member (312) to be inserted into the locking groove (3111) through the guide slope (3312).

4. The external drawer of the medical cart according to claim 3, characterized in that: The transmission slider (331) has a receiving groove (3313) inside, which is connected to the guide groove (3311). The receiving groove (3313) is provided with a blocking block (332) and a resetting member (333). The resetting member (333) can drive the blocking block (332) to insert or withdraw from the guide groove (3311). When the blocking block (332) is inserted into the guide groove (3311), the blocking block (332) can block the guide slope (3312) and separate a horizontal groove (3314) from the guide groove (3311). At this time, the locking member (312) is slidably disposed in the horizontal groove (3314).

5. The external drawer of the medical cart according to claim 4, characterized in that: The reset component (333) includes a shape memory alloy wire (3331), which is connected to the inner wall of the receiving groove (3313) and the blocking block (332) respectively. A micro switch (15) is provided on the drawer frame (1), which is electrically connected to the shape memory alloy wire (3331). The micro switch (15) is used to control the energization of the shape memory alloy wire (3331). When the shape memory alloy wire (3331) is energized and heated, it contracts to drive the blocking block (332) to be pulled out of the guide groove (3311).

6. The external drawer of the medical cart according to claim 4, characterized in that: The reset component (333) includes a reset spring (3332), which is disposed between the inner wall of the receiving groove (3313) and the blocking block (332). The reset spring (3332) is used to drive the blocking block (332) to be inserted into the guide groove (3311).

7. The external drawer of the medical cart according to claim 2, characterized in that: The second locking assembly (32) includes a hook (321) and a limiting block (322). The hook (321) is disposed on the transmission slider (331), and the limiting block (322) is disposed on the drawer body (2). A limiting groove (3221) is provided on the limiting block (322), and the hook (321) can be inserted into the limiting groove (3221).

8. The external drawer of the medical cart according to claim 7, characterized in that: The second locking assembly (32) includes a first magnet (323) and a second magnet (324). The first magnet (323) is disposed on the transmission slider (331) and close to the hook (321). The second magnet (324) is disposed on the limiting block (322). When the drawer body (2) is pushed into the drawer frame (1), the first magnet (323) and the second magnet (324) attract each other to drive the transmission slider (331) to approach the limiting block (322).

9. The external drawer of the medical trolley according to claim 2, characterized in that: The medical trolley (4) is provided with a lifting rod (41), the boss (311) is provided on the lifting rod (41), and the drawer frame (1) is provided with a clearance groove (12) along its own height direction. The lifting rod (41) passes through the clearance groove (12) and fits against the inner wall of the clearance groove (12).

10. The external drawer of the medical cart according to claim 1, characterized in that: It also includes a pop-out module (5), which is disposed inside the drawer frame (1) and connected to the drawer body (2). The pop-out module (5) is used to pop the drawer body (2) outward after the drawer body (2) is unlocked.

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