CN112971381B - Multilayer bookshelf convenient to get and put - Google Patents
Multilayer bookshelf convenient to get and put Download PDFInfo
- Publication number
- CN112971381B CN112971381B CN202110194344.0A CN202110194344A CN112971381B CN 112971381 B CN112971381 B CN 112971381B CN 202110194344 A CN202110194344 A CN 202110194344A CN 112971381 B CN112971381 B CN 112971381B
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- Prior art keywords
- bookshelf
- frame
- rod
- supporting plate
- contact
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B63/00—Cabinets, racks or shelf units, specially adapted for storing books, documents, forms, or the like
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B46/00—Cabinets, racks or shelf units, having one or more surfaces adapted to be brought into position for use by extending or pivoting
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B96/00—Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B96/00—Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
- A47B96/02—Shelves
- A47B96/025—Shelves with moving elements, e.g. movable extensions or link elements
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
- A47B96/00—Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
- A47B96/06—Brackets or similar supporting means for cabinets, racks or shelves
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- Warehouses Or Storage Devices (AREA)
Abstract
The invention relates to a multilayer bookshelf, in particular to a multilayer bookshelf convenient to take and place. The technical problems to be solved by the invention are as follows: the multi-layer bookshelf convenient to take and place is convenient to take and place, can conveniently take and place upper-layer books and can prevent the books from falling. A multi-layer bookshelf convenient for taking and placing comprises: a bookshelf; the supporting plate is slidably positioned on the bookshelf; the handles are positioned on two sides of the supporting plate; the driving assembly is positioned on the bookshelf; the descending assembly is positioned between the bookshelf and the driving assembly; the drawing-out component is positioned on the bookshelf. The book clamping device is provided with the clamping plates, so that books can be clamped, and the books on the supporting plate are prevented from falling off when the supporting plate moves; according to the invention, the second contact rod is matched with the special-shaped plate, so that the clamping plate can automatically move to clamp and release books; when the supporting plate moves, the baffle plate can automatically rotate, so that the baffle plate can block the front side of the supporting plate, and books can be more effectively protected from falling.
Description
Technical Field
The invention relates to a multilayer bookshelf, in particular to a multilayer bookshelf convenient to take and place.
Background
The bookshelf is a common tool in our life and is a tool specially used for people to put books. As the bookshelf has different shapes and different structures, the bookshelf has different names such as a bookcase, a book partition and the like.
The bookshelf generally has multilayer structure, consequently is comparatively difficult when getting to put upper books, and people that the height is shorter need get with the help of instruments such as stool and stair and put upper books, consequently need take instruments such as stool and stair to increase people's burden, when getting to put books simultaneously, fall from stool and stair easily, and then cause people to be injured.
Therefore, a multilayer bookshelf which is convenient to take and place and can prevent books from falling needs to be designed.
Disclosure of Invention
In order to overcome the defects that tools such as a stool and a stair are required to be moved when books on the upper layer are taken and placed, so that the burden of people is increased, and people are easily injured due to the fact that the tools are easy to fall from the stool and the stair when the books are taken and placed, the invention has the technical problems that: the multi-layer bookshelf convenient to take and place is convenient to take and place, can conveniently take and place upper-layer books and can prevent the books from falling.
The technical implementation scheme of the invention is as follows: a multi-layer bookshelf convenient for taking and placing comprises:
a bookshelf;
the supporting plate is slidably positioned on the bookshelf;
the handles are positioned on two sides of the supporting plate;
the driving component is positioned on the bookshelf;
the descending assembly is positioned between the bookshelf and the driving assembly;
the drawing-out component is positioned on the bookshelf.
Optionally, the driving assembly comprises:
the mounting plate is positioned on the bookshelf;
the motor is positioned on the mounting plate;
the screw rod is positioned on an output shaft of the motor;
the nut is positioned on the screw rod through threads;
and the fixing frame is positioned at two sides of the nut.
Optionally, the descending assembly comprises:
the guide frames are positioned at two sides of the bookshelf;
the first sliding block is positioned on the guide frame in a sliding manner and is correspondingly connected with the fixed frame;
the first spring is positioned between the first sliding block and the guide frame;
the connecting rod is positioned on the first sliding block;
the first guide rod is positioned on the connecting rod.
Optionally, the extraction assembly comprises:
the first connecting frame is slidably positioned on the first guide rod, and elastic parts are connected between the first connecting frame and the first guide rod;
the first contact rod is positioned on the first connecting frame;
the fixing plates are positioned on two sides of the bookshelf;
the second guide rod is positioned on the fixed plate;
the contact frame is slidably positioned on the second guide rod and correspondingly matched with the first contact rod;
and the second spring is positioned between the contact frame and the second guide rod.
Optionally, the method further includes:
the third guide rod is positioned on the supporting plate;
the second sliding blocks are slidably positioned on two sides of the third guide rod;
the second connecting frame is positioned on the second sliding block;
the clamping plate is positioned on the second connecting frame;
and the third spring is positioned between the second sliding block and the supporting plate.
Optionally, the method further includes:
the fixed block is positioned on the second connecting frame;
the second contact rod is positioned on the fixed block;
and the special-shaped plates are positioned at two sides of the bookshelf and are correspondingly matched with the second contact rods.
Optionally, the method further includes:
the rotating shaft is rotatably positioned between the handles;
the connecting plates are positioned on two sides of the rotating shaft;
the baffle is positioned on the connecting plate;
the gear is positioned on the rotating shaft;
the sliding rod is slidably positioned on the supporting plate;
the rack is positioned on the sliding rod and meshed with the gear;
the mounting block is positioned on the sliding rod;
the third connecting frame is positioned on the second sliding block;
and the connecting rod is rotatably positioned between the third connecting frame and the mounting block.
Optionally, the baffle is made of wood.
The invention has the following advantages: 1. the book clamping device is provided with the clamping plates, so that a book can be clamped, and the book on the supporting plate is prevented from falling off when the supporting plate moves.
2. The invention can make the clamping plate automatically move to clamp and release books by matching the second contact rod with the special-shaped plate.
3. When the supporting plate moves, the baffle plate can automatically rotate, so that the baffle plate can block the front side of the supporting plate, and books can be more effectively protected from falling.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of the driving assembly of the present invention.
Fig. 3 is a schematic perspective view of a descending assembly of the present invention.
Fig. 4 is a perspective view of the drawing assembly of the present invention.
Fig. 5 is a schematic perspective view of a first part of the present invention.
Fig. 6 is a perspective view of a second part of the present invention.
Fig. 7 is a perspective view of a third part of the present invention.
The meaning of the reference symbols in the figures: 1: a bookshelf, 2: pallet, 21: handle, 3: drive assembly, 31: mounting plate, 32: motor, 33: screw rod, 34: nut, 35: mount, 4: descending component, 41: guide frame, 42: first slider, 43: first spring, 44: connecting rod, 45: first guide bar, 5: extraction assembly, 51: first link frame, 53: first contact bar, 54: fixing plate, 55: second guide bar, 56: contact frame, 57: second spring, 6: third guide bar, 7: second slider, 8: second link, 9: splint, 10: third spring, 11: fixed block, 12: second contact lever, 13: shaped plate, 14: rotating shaft, 15: connecting plate, 16: baffle, 17: gear, 18: slide bar, 19: rack, 110: mounting block, 111: third link, 112: a connecting rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings. It is only noted that the invention is intended to be limited to the specific forms set forth herein, including any reference to the drawings, as well as any other specific forms of embodiments of the invention.
Example 1
A multi-layer bookshelf convenient to take and place is shown in figures 1-4 and comprises a bookshelf 1, a supporting plate 2, handles 21, a driving assembly 3, a descending assembly 4 and a drawing assembly 5, wherein the supporting plate 2 is arranged on the bookshelf 1 in a sliding mode, the handles 21 are arranged on the left side and the right side of the supporting plate 2, the driving assembly 3 is arranged on the rear side of the bookshelf 1, the descending assembly 4 is arranged between the bookshelf 1 and the driving assembly 3, and the drawing assembly 5 is arranged on the bookshelf 1.
When books need to be placed, can place on bookshelf 1 and layer board 2, when needs are got and is put books on the bracket, control handle 21 moves to the front side, and then make and take out subassembly 5 and operate, thereby make layer board 2 take out, control drive assembly 3 operates afterwards, and then can make descending assembly 4 operate, thereby make layer board 2 move down, thereby make things convenient for people to get and put books on the bracket, get when books and put the completion back, control drive assembly 3 reverse function, and then make descending assembly 4 reverse function, thereby make layer board 2 rebound reset, control handle 21 makes layer board 2 move to the back side with taking out subassembly 5 afterwards and resets can.
The driving assembly 3 comprises a mounting plate 31, a motor 32, a lead screw 33, a nut 34 and a fixing frame 35, the mounting plate 31 is arranged at the rear side of the bookshelf 1, the motor 32 is arranged at the upper side of the mounting plate 31, the lead screw 33 is connected to an output shaft of the motor 32, the nut 34 is connected to the lead screw 33 through threads, and the fixing frame 35 is connected to the left side and the right side of the nut 34.
When books need to be taken and placed on the bracket, the motor 32 is started, the motor 32 can drive the screw rod 33 to rotate, the nut 34 can move downwards, the fixing frame 35 can move downwards, the descending assembly 4 can be operated, the supporting plate 2 can move downwards by drawing the assembly 5 out, books can be taken and placed on the bracket conveniently by people, after the books are taken and placed, the motor 32 is controlled to rotate reversely, and then all the parts are reversely operated to reset, and the supporting plate 2 can move upwards to reset.
Descending assembly 4 is including leading truck 41, first slider 42, first spring 43, connecting rod 44 and first guide arm 45, leading truck 41 has all been welded to bookshelf 1's the left and right sides, all the slidingtype is equipped with first slider 42 on leading truck 41, first slider 42 corresponds with mount 35 and is connected, all be connected with first spring 43 between first slider 42 and the leading truck 41, connecting rod 44 has all been welded to first slider 42's the inboard, the front side of connecting rod 44 all is connected with first guide arm 45.
Starting motor 32, can make mount 35 remove downwards, and then make first slider 42 remove downwards, first spring 43 is compressed, thereby make connecting rod 44 and first guide arm 45 remove downwards, and then can drive handle 21 and remove downwards through taking out subassembly 5, and then need not manual control handle 21 and make layer board 2 remove downwards, thereby make things convenient for people to get on the bracket and put books, get when books and put the completion after, control motor 32 reversal, and then above-mentioned each part reverse operation resets, thereby make layer board 2 remove upwards reset.
Withdrawing subassembly 5 including first link 51, first contact lever 53, fixed plate 54, second guide arm 55, contact frame 56 and second spring 57, all slidingly be connected with first link 51 on the first guide arm 45, first link 51 corresponds with handle 21 and is connected, all be connected with the elastic component between first link 51 and the first guide arm 45, first contact lever 53 has all been welded to the downside of first link 51, the left and right sides of bookshelf 1 all is equipped with fixed plate 54, second guide arm 55 has all been welded to the upside of fixed plate 54, all slidingly be equipped with contact frame 56 on the second guide arm 55, contact frame 56 corresponds the cooperation with first contact lever 53, all be connected with second spring 57 between contact frame 56 and the second guide arm 55.
When the first guide rod 45 moves downwards, the supporting plate 2 moves downwards through the first connecting frame 51, and when the supporting plate 2 needs to be pulled out, the control handle 21 moves forwards, so that the first connecting frame 51 moves forwards, the elastic piece deforms, so that the first contact rod 53 moves forwards, when the first contact rod 53 moves to be in contact with the contact frame 56, the contact frame 56 moves downwards, the second spring 57 is compressed, when the first contact rod 53 moves to be matched with the contact frame 56, the second spring 57 rebounds to drive the contact frame 56 to move upwards, so that the contact frame 56 blocks the first contact rod 53, the supporting plate 2 keeps a pulled-out state all the time, and further, people can conveniently take and place books on the supporting plate, after the book taking and placing are completed, the contact frame 56 moves downwards, the second spring 57 is compressed, so that the contact frame 56 is not matched with the first contact rod 53, at this time, the elastic member is restored to drive the first connecting frame 51, the first contact rod 53, the handle 21 and the supporting plate 2 to move backward and reset, and then the contact frame 56 is not controlled any more, and the second spring 57 rebounds to drive the contact frame 56 to move upward and reset.
Example 2
On the basis of embodiment 1, as shown in fig. 5, 6 and 7, the portable electronic device further comprises a third guide rod 6, a second slider 7, a second connecting frame 8, a clamping plate 9 and a third spring 10, wherein the third guide rod 6 is connected to the upper side of the rear portion of the supporting plate 2, the second slider 7 is arranged on the left side and the right side of the third guide rod 6 in a sliding manner, the second connecting frame 8 is welded to the upper side of the second slider 7, the clamping plate 9 is arranged on the front side of the upper portion of the second connecting frame 8, and the third spring 10 is connected between the second slider 7 and the supporting plate 2.
The device is in when the normality, third spring 10 is in compression state, when needs remove books layer board 2 and get and put books, no longer control second slider 7, third spring 10 kick-backs and drives second slider 7, second link 8 and splint 9 move to the inboard, and then make splint 9 clip books, and then when preventing that layer board 2 from removing, books on the layer board 2 drop, after the books of taking are accomplished, layer board 2 moves and resets, control second slider 7 and move to the outside afterwards, third spring 10 is compressed, and then make second link 8 and splint 9 move to the outside and reset.
Still including fixed block 11, second contact bar 12 and sketch plate 13, the upside of second link 8 all is connected with fixed block 11, and second contact bar 12 has all been welded to the upside of fixed block 11, and the upper portion left and right sides of bookshelf 1 all is equipped with sketch plate 13, and sketch plate 13 corresponds the cooperation with second contact bar 12.
When the supporting plate 2 moves forward, the second connecting frame 8 can move forward, and then the second contact rod 12 moves to the front side, when the second contact rod 12 is no longer in contact with the special-shaped plate 13, the third spring 10 rebounds to drive the second connecting frame 8 and the second contact rod 12 to move to the inner side, and then the clamping plate 9 moves to the inner side to automatically clamp books, when the supporting plate 2 moves backward and resets, the second connecting frame 8 and the second contact rod 12 can move to the rear side, so that the second contact rod 12 can again be in contact with the special-shaped plate 13, and then the second contact rod 12 moves to the outer side, and thus the second connecting frame 8 and the clamping plate 9 automatically move to the outer side to reset.
Still including pivot 14, connecting plate 15, baffle 16, gear 17, slide bar 18, rack 19, installation piece 110, third link 111 and connecting rod 112, the rotary type is connected with pivot 14 between the handle 21, the left and right sides of pivot 14 all is equipped with connecting plate 15, all install baffle 16 on the connecting plate 15, the middle part key connection of pivot 14 has gear 17, the downside slidingtype of layer board 2 is equipped with slide bar 18, slide bar 18's front side welded rack 19, rack 19 and gear 17 meshing, slide bar 18's rear side welded installation piece 110, the downside of second slider 7 all is connected with third link 111, all be connected with connecting rod 112 of rotary type between third link 111 and the installation piece 110.
When the second slider 7 moves to the inner side, the third connecting frame 111 can move to the inner side, and then the mounting block 110 moves to the front side through the connecting rod 112, and then the rack 19 moves to the front side, so as to drive the gear 17 to rotate, and further to rotate the rotating shaft 14, so as to rotate the connecting plate 15 and the baffle 16, so that the baffle 16 can block the front side of the supporting plate 2, and further to effectively protect the book from dropping, and when the second slider 7 moves to the outer side, the reverse operation of the above parts can be reset.
Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made herein without departing from the principles and spirit of the invention as defined by the appended claims. Therefore, the detailed description of the embodiments of the present disclosure is to be construed as merely illustrative, and not limitative of the remainder of the disclosure, but rather to limit the scope of the disclosure to the full extent set forth in the appended claims.
Claims (3)
1. The utility model provides a multilayer bookshelf convenient to get and put, characterized by, including:
a bookshelf (1);
the supporting plate (2) is slidably positioned on the bookshelf (1);
the handles (21) are positioned on two sides of the supporting plate (2);
the driving assembly (3) is positioned on the bookshelf (1);
the descending assembly (4) is positioned between the bookshelf (1) and the driving assembly (3);
the drawing-out component (5) is positioned on the bookshelf (1);
the drive assembly (3) comprises:
the mounting plate (31) is positioned on the bookshelf (1);
a motor (32) located on the mounting plate (31);
a screw (33) located on an output shaft of the motor (32);
a nut (34) which is positioned on the screw rod (33) through threads;
the fixing frame (35) is positioned on two sides of the nut (34);
the descending assembly (4) comprises:
the guide frames (41) are positioned on two sides of the bookshelf (1);
the first sliding block (42) is slidably positioned on the guide frame (41), and the first sliding block (42) is correspondingly connected with the fixed frame (35);
a first spring (43) located between the first slider (42) and the guide frame (41);
a connecting rod (44) positioned on the first slider (42);
a first guide rod (45) located on the connecting rod (44);
the extraction assembly (5) comprises:
the first connecting frame (51) is slidably positioned on the first guide rod (45), elastic pieces are connected between the first connecting frame (51) and the first guide rod (45), and when the supporting plate (2) needs to be pulled out, the control handle (21) moves forwards to drive the first connecting frame (51) to move forwards;
a first contact lever (53) located on the first link frame (51);
the fixing plates (54) are positioned at two sides of the bookshelf (1);
a second guide rod (55) located on the fixing plate (54);
the contact frame (56) is slidably positioned on the second guide rod (55), and the contact frame (56) is correspondingly matched with the first contact rod (53);
a second spring (57) located between the contact frame (56) and the second guide bar (55);
the multilayer bookshelf convenient for taking and placing further comprises:
the fixed block (11) is positioned on the second connecting frame (8);
the second contact rod (12) is positioned on the fixed block (11);
the special-shaped plates (13) are positioned on two sides of the bookshelf (1), the special-shaped plates (13) are correspondingly matched with the second contact rods (12), the supporting plate (2) moves forwards and can drive the second contact rods (12) to be separated from the special-shaped plates (13) through the second connecting frame (8), and the third spring (10) rebounds to drive the clamping plate (9) to move inwards to automatically clamp the book through the second sliding block (7) and the second connecting frame (8);
the multilayer bookshelf convenient for taking and placing further comprises:
a rotating shaft (14) rotatably positioned between the handles (21);
the connecting plates (15) are positioned on two sides of the rotating shaft (14);
the baffle (16) is positioned on the connecting plate (15);
a gear (17) located on the shaft (14);
the sliding rod (18) is positioned on the supporting plate (2) in a sliding manner;
the rack (19) is positioned on the sliding rod (18), and the rack (19) is meshed with the gear (17);
a mounting block (110) located on the slide bar (18);
the third connecting frame (111) is positioned on the second sliding block (7);
and the connecting rod (112) is rotatably positioned between the third connecting frame (111) and the mounting block (110), the second slider (7) drives the third connecting frame (111) to move inwards, and the third connecting frame (111) drives the mounting block (110) to move forwards through the connecting rod (112).
2. The multi-layered bookrack convenient to pick and place as claimed in claim 1, further comprising:
the third guide rod (6) is positioned on the supporting plate (2);
the second sliding blocks (7) are positioned on two sides of the third guide rod (6) in a sliding manner;
the second connecting frame (8) is positioned on the second sliding block (7);
the clamping plate (9) is positioned on the second connecting frame (8);
and the third spring (10) is positioned between the second sliding block (7) and the supporting plate (2).
3. A multi-layered bookshelf as claimed in claim 1 wherein the baffle (16) is made of wood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110194344.0A CN112971381B (en) | 2021-02-20 | 2021-02-20 | Multilayer bookshelf convenient to get and put |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110194344.0A CN112971381B (en) | 2021-02-20 | 2021-02-20 | Multilayer bookshelf convenient to get and put |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112971381A CN112971381A (en) | 2021-06-18 |
| CN112971381B true CN112971381B (en) | 2022-09-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110194344.0A Active CN112971381B (en) | 2021-02-20 | 2021-02-20 | Multilayer bookshelf convenient to get and put |
Country Status (1)
| Country | Link |
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| CN (1) | CN112971381B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113697273B (en) * | 2021-08-05 | 2023-03-24 | 江西远大保险设备实业集团有限公司 | Convenient intensive of size adjustable |
| CN114176333B (en) * | 2021-12-09 | 2023-04-07 | 江西远大保险设备实业集团有限公司 | Aluminum alloy side plate bookshelf convenient for adjusting distance between supporting plates |
| CN114424869B (en) * | 2022-01-17 | 2024-02-27 | 郭旗英 | Book shelf position number coding type book management shelf |
| CN114468590A (en) * | 2022-01-21 | 2022-05-13 | 钟飞 | Book shelf for junior middle school Chinese |
| CN114468594B (en) * | 2022-02-11 | 2023-08-18 | 江西光正金属设备集团有限公司 | Multifunctional intelligent bookshelf |
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| CN208988002U (en) * | 2018-07-24 | 2019-06-18 | 印象空间(深圳)室内设计工程有限公司 | A kind of Intelligent clothes cabinet |
| CN210018404U (en) * | 2019-01-28 | 2020-02-07 | 世塑有限公司 | Novel electric storage rack structure |
| CN209789034U (en) * | 2019-03-06 | 2019-12-17 | 西京学院 | Device for taking articles at high position of wardrobe |
| CN211408169U (en) * | 2019-09-12 | 2020-09-04 | 上杭县旺源工业设计有限公司 | File fixed establishment of enterprise management consultation file storing compartment |
| CN211882842U (en) * | 2020-01-15 | 2020-11-10 | 广东玛格家居有限公司 | Height-adjustable's locker |
| CN112089213A (en) * | 2020-08-17 | 2020-12-18 | 杭州焱非智能科技有限公司 | Bookcase with adjustable |
| CN112205763A (en) * | 2020-11-17 | 2021-01-12 | 江西珍材实业有限公司 | Kindergarten desk convenient for storage and preventing school tools from falling |
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