CN113747727A - Rack plywood structure capable of realizing tool-free installation and quick disassembly - Google Patents
Rack plywood structure capable of realizing tool-free installation and quick disassembly Download PDFInfo
- Publication number
- CN113747727A CN113747727A CN202010466330.5A CN202010466330A CN113747727A CN 113747727 A CN113747727 A CN 113747727A CN 202010466330 A CN202010466330 A CN 202010466330A CN 113747727 A CN113747727 A CN 113747727A
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- cabinet body
- fixedly connected
- cabinet
- sleeve
- hole
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1485—Servers; Data center rooms, e.g. 19-inch computer racks
- H05K7/1488—Cabinets therefor, e.g. chassis or racks or mechanical interfaces between blades and support structures
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1485—Servers; Data center rooms, e.g. 19-inch computer racks
- H05K7/1488—Cabinets therefor, e.g. chassis or racks or mechanical interfaces between blades and support structures
- H05K7/1489—Cabinets therefor, e.g. chassis or racks or mechanical interfaces between blades and support structures characterized by the mounting of blades therein, e.g. brackets, rails, trays
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Assembled Shelves (AREA)
Abstract
The invention discloses a cabinet laminate structure capable of realizing tool-free installation and quick disassembly, which comprises a cabinet body, wherein the side surface of the cabinet body is fixedly connected with supporting legs, the front side of the cabinet body is provided with a through groove and is rotatably connected with a cabinet door through a pin shaft, the rear side of the cabinet body is provided with a through hole and is rotatably limited by the through hole, a screw rod I is arranged in the cabinet body, the front side of the transmission plate is provided with a screw hole and is in threaded connection with the surface of the screw rod I through the screw hole, two sides of the transmission plate are limited and slide on the inner wall of the cabinet body, the front side of the transmission plate is fixedly connected with two symmetrical toothed plates, and the upper surfaces of the toothed plates are engaged with gears. According to the invention, through the matching use of the structures, the problems that the disassembly and assembly of the traditional plate layer are carried out only by matching the adaptive disassembly and assembly tools in the actual use process, the operation is time-consuming and labor-consuming, the working efficiency is reduced, and the use is inconvenient are solved.
Description
Technical Field
The invention relates to the technical field of data cabinet equipment, in particular to a cabinet layer plate structure capable of realizing tool-free installation and quick disassembly.
Background
The laminated plate structure is used in a huge amount in an IDC data center machine room, network exchange equipment and a data server are required to be placed on the surface of a laminated plate provided with a bent arm, in order to ensure the strength of the laminated plate after installation, manufacturers or suppliers adopt a method for increasing the material thickness, or after traditional fastening screws and clamp spring nuts are welded on the bottom surface of the laminated plate and fastened, the bearing conversion of the laminated plate is converted into shearing force and then transmitted to a stress area, and the stress area bears all equipment load, so the thickness or the material of only a reinforcing plate is useless, for this reason, a machine cabinet plate layer structure is proposed, for example, a quick laminated plate assembly for a network data machine cabinet disclosed by 5U of a CN20849 sleeve (8) is integrally connected and formed by a bearing panel and a positioning panel which are vertical to each other, a plurality of screw holes are reserved on the bearing panel, threaded holes and via holes are reserved on the positioning panel, the back of the positioning panel is a positioning surface used for being abutted against an inner mounting surface, a cylinder coaxially stretched with a threaded hole and a concave table concentric with a reserved through hole are respectively formed on the positioning surface, the surface of the cylinder is further coaxially and outwards overlapped and stretched to form a quadrangular frustum with gradually contracted taper, a cross groove is formed in the surface of the quadrangular frustum, and the cross groove enables the quadrangular frustum to be equally divided. The utility model has simple structure and convenient use, the utility model can complete the functions of locking, anti-loosening and positioning only by one screw and one rotation action, the utility model greatly reduces the labor intensity of the installation personnel, improves the assembly efficiency, satisfies various assembly modes and effectively adapts to the requirements of customers;
however, in the actual use process, the disassembly and assembly of the board layer are carried out only by matching the disassembly and assembly tools which need to be matched, the operation is time-consuming and labor-consuming, the working efficiency is reduced, and the inconvenience is brought to the use.
Disclosure of Invention
The invention aims to provide a cabinet layer plate structure capable of realizing tool-free installation and quick disassembly, which has the advantage of tool-free disassembly, is more convenient and quick to operate and improves the working efficiency.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a can realize exempting from rack plywood structure of instrument installation and quick detach, includes the cabinet body, the side fixedly connected with supporting leg of the cabinet body, open to be equipped with logical groove and rotate through the round pin axle and be connected with the cabinet door in the front side of the cabinet body, open to be equipped with the through-hole and have screw rod one through the spacing rotation of through-hole in the rear side of the cabinet body, the internal driving plate that is equipped with of cabinet, open to be equipped with the screw and pass through the screw and the surface spiro union of screw rod one in the front side of driving plate.
The both sides of driving plate are spacing slip on the inner wall of the cabinet body, the pinion rack of two symmetries of front side fixedly connected with of driving plate, the last surface toothing of pinion rack has the gear, the inner wall fixedly connected with sleeve of gear, telescopic surface runs through the cabinet body and is spacing to rotate on the cabinet body, the rectangular hole has been seted up to telescopic left end, the inner wall sliding connection in rectangular hole has the rectangular pole, the one end fixedly connected with clamp plate of rectangular pole, the other end fixedly connected with screw rod two of rectangular pole, the one end swing joint who keeps away from the rectangular pole on the clamp plate has the plywood, the surperficial spiro union of screw rod two has the thread bush, the right side of thread bush is spacing to rotate on telescopic left end.
Preferably, the number of the first screws in the cabinet body is not less than three.
Preferably, the side of the cabinet body is provided with a through hole and is fixedly connected with a filter screen through the through hole.
Preferably, the rear end of the first screw rod is fixedly connected with a handle, and anti-skid grains are formed in the surface of the handle.
Preferably, the front side of driving plate is opened and is equipped with two through-holes and has spacing guide bar through-hole sliding connection, the rear end of spacing guide bar and the inner wall fixed connection of the cabinet body.
Preferably, the surface of the sleeve is fixedly connected with two limiting rings, and the opposite sides of the two limiting rings are respectively connected with the side face of the cabinet body and the inner wall of the cabinet body in a rotating manner.
Preferably, the surface of the rectangular rod is sleeved with a damping spring, and two ends of the damping spring are fixedly connected with the opposite sides of the sleeve and the pressure plate.
Compared with the prior art, the invention has the following beneficial effects: the cabinet body is used for providing support for the whole device, the cabinet body is supported through the support legs, the cabinet body is prevented from being in direct contact with a support surface, and the cabinet door is opened, so that the articles can be increased or decreased in the cabinet body;
the first screw rod is driven to rotate on the cabinet body in a limiting mode through a hand, the transmission plate can only slide on the inner wall of the cabinet body in a limiting mode in a front-back limiting mode, relative rotation is further generated between the first screw rod and the transmission plate, and the transmission plate can move on the first screw rod back and forth by changing the rotating direction of the first screw rod;
the toothed plate is driven to move back and forth by the transmission plate, when the toothed plate moves back and forth, the gears meshed with the toothed plate can drive the sleeve to perform limiting and pressing on the cabinet body, and the laminates fixed on the opposite surfaces of the two pressing plates can also synchronously rotate, so that the rotation adjustment of the laminates is realized, and the requirements in practical use are met conveniently;
the sleeve is fixed in the gear through manually driving the limiting rotation of the thread sleeve on the sleeve, so that the gear and the sleeve cannot rotate when the toothed plate does not move back and forth;
due to the fact that the rectangular hole in the sleeve is formed, the rectangular rod can only move left and right in the sleeve, when the threaded sleeve rotates, the screw rod II on the rectangular rod and the threaded sleeve can rotate relatively, the screw rod II is sleeved in the sleeve relatively through the threads and drives the rectangular rod to move left and right, and the pressing plate on the rectangular rod also moves synchronously;
the two pressing plates can move oppositely through driving, the fixing of the laminate is completed through opposite clamping on the side surfaces, and the disassembly of the laminate can be completed through reverse driving in the same way; the whole process does not need dismounting tools, the operation can be carried out at any time and any place, and the use is more convenient and faster.
Through the cooperation between the above-mentioned structure use, solved in the in-service use because the dismouting of traditional sheet layer needs the assembly and disassembly tools cooperation of adaptation just can go on, the operation is got up and is wasted time and energy, has reduced work efficiency, gives the problem of inconvenience of using.
Drawings
FIG. 1 is a top cross-sectional view of a structure of the present invention;
FIG. 2 is a cross-sectional view of the threaded sleeve of FIG. 1 according to the present invention;
fig. 3 is a cross-sectional view of the case of fig. 1 taken along direction AA of the present invention.
In the figure: 1. a cabinet body; 2. supporting legs; 3. a cabinet door; 4. a first screw rod; 5. a drive plate; 6. a toothed plate; 7. a gear; 8. a sleeve; 9. a rectangular hole; 10. a rectangular bar; 11. pressing a plate; 12. a second screw; 13. laminating the board; 14. a threaded sleeve; 15. a handle; 16. a limiting guide rod; 17. a limiting ring; 18. a shock absorbing spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a technical solution: a cabinet laminate structure capable of realizing tool-free installation and quick disassembly comprises a cabinet body 1, wherein the cabinet body 1 is used for providing support for the whole device; the side surface of the cabinet body 1 is provided with a through hole and is fixedly connected with a filter screen through the through hole, the air exchange inside and outside the cabinet body 1 can be accelerated through the arrangement of the through hole on the side surface of the cabinet body 1, so that the heat in the cabinet body 1 is transferred out, and the filter screen is arranged, so that the heat dissipation efficiency is not influenced, and meanwhile, the external dust is prevented from entering;
the side surface of the cabinet body 1 is fixedly connected with supporting legs 2, the cabinet body 1 is supported through the supporting legs 2, the cabinet body 1 is prevented from being in direct contact with a supporting surface, a through groove is formed in the front side of the cabinet body 1, a cabinet door 3 is rotatably connected through a pin shaft, the cabinet door 3 is opened, and increase and decrease of equipment objects can be carried out in the cabinet body 1;
the rear side of the cabinet body 1 is provided with a through hole, a first screw rod 4 is limited and rotated through the through hole, the number of the first screw rods 4 in the cabinet body 1 is not less than three, and the number of the inner layer plates 13 in the cabinet body 1 is not less than three through the one-to-one correspondence relationship between the number of the first screw rods 4 and the number of the layer plates 13, so that loading of more equipment can be realized;
the handle 15 is fixedly connected to the rear end of the first screw rod 4, the anti-skid grains are formed in the surface of the handle 15, the first screw rod 4 is conveniently driven to rotate through the arrangement of the handle 15 on the first screw rod 4, and the anti-skid grains are formed in the anti-skid grains, so that the rotation is more labor-saving;
a transmission plate 5 is arranged in the cabinet body 1, a screw hole is formed in the front side of the transmission plate 5 and is in threaded connection with the surface of the first screw rod 4 through the screw hole, two sides of the transmission plate 5 slide on the inner wall of the cabinet body 1 in a limiting manner, the first screw rod 4 is driven to rotate on the cabinet body 1 in a limiting manner by hand, the transmission plate 5 can only slide on the inner wall of the cabinet body 1 in a front-back limiting manner, relative rotation is further generated between the first screw rod 4 and the transmission plate 5, and the transmission plate 5 can move back and forth on the first screw rod 4 by changing the rotating direction of the first screw rod 4;
two through holes are formed in the front side of the transmission plate 5, the limiting guide rods 16 are connected with the through holes in a sliding mode, the rear ends of the limiting guide rods 16 are fixedly connected with the inner wall of the cabinet body 1, and the movement track of the transmission plate 5 in the cabinet body 1 can be further limited through the arrangement of the two limiting guide rods 16 on the transmission plate 5, so that the stability of the movement of the transmission plate 5 in the cabinet body 1 is guaranteed;
the front side of the transmission plate 5 is fixedly connected with two symmetrical toothed plates 6, the upper surfaces of the toothed plates 6 are meshed with a gear 7, the inner wall of the gear 7 is fixedly connected with a sleeve 8, and the threaded sleeve 14 is manually driven to rotate in a limiting manner on the sleeve 8, so that the sleeve 8 is fixed in the gear 7, and when the toothed plates 6 do not move back and forth, the gear 7 and the sleeve 8 cannot rotate;
the surface of the sleeve 8 penetrates through the cabinet body 1 and is limited to rotate on the cabinet body 1, the surface of the sleeve 8 is fixedly connected with two limiting rings 17, the opposite sides of the two limiting rings 17 are respectively connected with the side surface of the cabinet body 1 and the inner wall of the cabinet body 1 in a rotating mode, and the limiting rotation of the sleeve 8 on the cabinet body 1 can be further guaranteed by the arrangement of the two limiting rings 17 on the sleeve 8, so that the sleeve is prevented from moving left and right in the horizontal direction in the rotating process;
the left end of the sleeve 8 is provided with a rectangular hole 9, the inner wall of the rectangular hole 9 is connected with a rectangular rod 10 in a sliding mode, one end of the rectangular rod 10 is fixedly connected with a pressing plate 11, the other end of the rectangular rod 10 is fixedly connected with a screw rod II 12, a damping spring 18 is sleeved on the surface of the rectangular rod 10, two ends of the damping spring 18 are fixedly connected with the opposite sides of the sleeve 8 and the pressing plate 11, and through the arrangement of the damping spring 18 on the surface of the rectangular rod 10, fine vibration generated in the moving process of the rectangular rod 10 can be filtered and absorbed, the laminated plate 13 is guaranteed to have a strong anti-seismic effect in the using process, and equipment mounted on the laminated plate 13 is also protected;
one end of the pressing plate 11, which is far away from the rectangular rod 10, is movably connected with a laminate 13, the toothed plate 6 is driven to move back and forth through the transmission plate 5, when the toothed plate 6 moves back and forth, the gear 7 meshed with the toothed plate can drive the sleeve 8 to perform limiting and follow-up pressing on the cabinet body 1, the laminates 13 fixed on the opposite surfaces of the two pressing plates 11 can also synchronously rotate, and further, the rotation adjustment of the laminates 13 is realized, so that the requirements in practical use are met; the surface of the screw rod II 12 is in threaded connection with a threaded sleeve 14, the right side of the threaded sleeve 14 is in limited rotation on the left end of the sleeve 8, due to the fact that the rectangular hole 9 in the sleeve 8 is formed, the rectangular rod 10 can only move left and right in the sleeve 8, after the threaded sleeve 14 rotates, the screw rod II 12 on the rectangular rod 10 and the threaded sleeve 14 can rotate relatively, the screw rod II 12 can move left and right in the sleeve 8 relative to the threaded sleeve 14 with the rectangular rod 10, the pressing plates 11 on the rectangular rod 10 can also move synchronously, the two pressing plates 11 can move oppositely through driving, fixing of the laminate 13 is completed through opposite clamping on the side faces, and similarly, the laminate 13 can be dismounted through reverse driving; the whole process does not need a dismounting tool, the operation can be carried out at any time and any place, and the use is more convenient and faster;
the working principle is as follows: when the cabinet laminate structure capable of realizing tool-free installation and quick disassembly is used, the cabinet body 1 is used for providing support for the whole device, the cabinet body 1 is supported through the support legs 2, the cabinet body 1 is prevented from being in direct contact with a support surface, and the cabinet door 3 is opened, so that the objects can be increased or decreased in the cabinet body 1; the first screw rod 4 is driven to rotate on the cabinet body 1 in a limiting manner manually, and the transmission plate 5 can only slide on the inner wall of the cabinet body 1 in a limiting manner in a front-back direction, so that the first screw rod 4 and the transmission plate 5 rotate relatively, and the transmission plate 5 can move on the first screw rod 4 in a front-back direction by changing the rotating direction of the first screw rod 4; the toothed plate 6 is driven to move back and forth through the transmission plate 5, when the toothed plate 6 moves back and forth, the gear 7 meshed with the toothed plate can drive the sleeve 8 to perform limiting and pressing on the cabinet body 1, the laminate 13 fixed on the opposite surfaces of the two pressing plates 11 can also synchronously rotate, and therefore the rotating adjustment of the laminate 13 is realized, and the requirements in practical use are met conveniently; the threaded sleeve 14 is manually driven to rotate on the sleeve 8 in a limiting manner, and the sleeve 8 is fixed in the gear 7, so that the gear 7 and the sleeve 8 cannot rotate when the toothed plate 6 does not move back and forth; due to the fact that the rectangular hole 9 in the sleeve 8 is formed, the rectangular rod 10 can only move left and right in the sleeve 8, when the threaded sleeve 14 rotates, the screw rod II 12 on the rectangular rod 10 and the threaded sleeve 14 can rotate relatively, the screw rod II 12 drives the rectangular rod 10 to move left and right in the sleeve 8 relative to the threaded sleeve 14, and the pressing plate 11 on the rectangular rod 10 also moves synchronously; the two pressing plates 11 can move oppositely through driving, the fixing of the laminate 13 is completed through opposite clamping on the side surfaces, and similarly, the laminate 13 can be detached through reverse driving; the whole process does not need a dismounting tool, the operation can be carried out at any time and any place, and the use is more convenient and faster; through the cooperation between the above-mentioned structure use, solved in the in-service use because the dismouting of traditional sheet layer needs the assembly and disassembly tools cooperation of adaptation just can go on, the operation is got up and is wasted time and energy, has reduced work efficiency, gives the problem of inconvenience of using.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a can realize exempting from rack plywood structure of instrument installation and quick detach which characterized in that: the cabinet comprises a cabinet body (1), wherein supporting legs (2) are fixedly connected to the side face of the cabinet body (1), a through groove is formed in the front side of the cabinet body (1), a cabinet door (3) is connected through a pin shaft in a rotating mode, a through hole is formed in the rear side of the cabinet body (1), a screw rod I (4) is rotatably limited through the through hole, a transmission plate (5) is arranged in the cabinet body (1), and a screw hole is formed in the front side of the transmission plate (5) and is in threaded connection with the surface of the screw rod I (4) through the screw hole;
the two sides of the transmission plate (5) slide on the inner wall of the cabinet body (1) in a limiting manner, the front side of the transmission plate (5) is fixedly connected with two symmetrical toothed plates (6), the upper surface of each toothed plate (6) is meshed with a gear (7), the inner wall of each gear (7) is fixedly connected with a sleeve (8), the surface of each sleeve (8) penetrates through the cabinet body (1) and rotates on the cabinet body (1) in a limiting manner, the left end of each sleeve (8) is provided with a rectangular hole (9), the inner wall of each rectangular hole (9) is slidably connected with a rectangular rod (10), one end of each rectangular rod (10) is fixedly connected with a pressing plate (11), the other end of each rectangular rod (10) is fixedly connected with a screw rod II (12), one end of each pressing plate (11) far away from the rectangular rod (10) is movably connected with a laminated plate (13), and the surface of each screw rod II (12) is screwed with a threaded sleeve (14), the right side of the threaded sleeve (14) is limited and rotated on the left end of the sleeve (8).
2. The cabinet shelf structure capable of realizing tool-free installation and quick release according to claim 1, wherein: the number of the first screw rods (4) in the cabinet body (1) is not less than three.
3. The cabinet shelf structure capable of realizing tool-free installation and quick release according to claim 1, wherein: the side of the cabinet body (1) is provided with a through hole and is fixedly connected with a filter screen through the through hole.
4. The cabinet shelf structure capable of realizing tool-free installation and quick release according to claim 1, wherein: the rear end of the first screw rod (4) is fixedly connected with a handle (15), and anti-skid grains are formed in the surface of the handle (15).
5. The cabinet shelf structure capable of realizing tool-free installation and quick release according to claim 1, wherein: two through holes are formed in the front side of the transmission plate (5), a limiting guide rod (16) is connected to the front side of the transmission plate in a sliding mode through the through holes, and the rear end of the limiting guide rod (16) is fixedly connected with the inner wall of the cabinet body (1).
6. The cabinet shelf structure capable of realizing tool-free installation and quick release according to claim 1, wherein: the surface of the sleeve (8) is fixedly connected with two limiting rings (17), and the opposite sides of the two limiting rings (17) are respectively connected with the side surface of the cabinet body (1) and the inner wall of the cabinet body (1) in a rotating manner.
7. The cabinet shelf structure capable of realizing tool-free installation and quick release according to claim 1, wherein: the surface of the rectangular rod (10) is sleeved with a damping spring (18), and two ends of the damping spring (18) are fixedly connected with the opposite sides of the sleeve (8) and the pressing plate (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466330.5A CN113747727B (en) | 2020-05-28 | 2020-05-28 | Rack plywood structure capable of realizing tool-free installation and quick disassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466330.5A CN113747727B (en) | 2020-05-28 | 2020-05-28 | Rack plywood structure capable of realizing tool-free installation and quick disassembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113747727A true CN113747727A (en) | 2021-12-03 |
| CN113747727B CN113747727B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010466330.5A Active CN113747727B (en) | 2020-05-28 | 2020-05-28 | Rack plywood structure capable of realizing tool-free installation and quick disassembly |
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| CN (1) | CN113747727B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525235A (en) * | 2018-04-04 | 2018-09-14 | 山东女子学院 | A kind of basketball high-efficiency washing device |
| CN208490085U (en) * | 2018-06-15 | 2019-02-12 | 无锡康贝电子设备有限公司 | Network data cabinet laminate quick assembling coupling |
| CN209708400U (en) * | 2019-03-10 | 2019-11-29 | 马光玉 | A kind of bioconversion medium device |
| CN110785031A (en) * | 2019-11-10 | 2020-02-11 | 互联互想(杭州)教育科技有限公司 | Split formula 5G communication rack |
| CN111136468A (en) * | 2019-12-31 | 2020-05-12 | 宁波青缇工业设计有限公司 | Equipment to automobile parts panel beating |
-
2020
- 2020-05-28 CN CN202010466330.5A patent/CN113747727B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525235A (en) * | 2018-04-04 | 2018-09-14 | 山东女子学院 | A kind of basketball high-efficiency washing device |
| CN208490085U (en) * | 2018-06-15 | 2019-02-12 | 无锡康贝电子设备有限公司 | Network data cabinet laminate quick assembling coupling |
| CN209708400U (en) * | 2019-03-10 | 2019-11-29 | 马光玉 | A kind of bioconversion medium device |
| CN110785031A (en) * | 2019-11-10 | 2020-02-11 | 互联互想(杭州)教育科技有限公司 | Split formula 5G communication rack |
| CN111136468A (en) * | 2019-12-31 | 2020-05-12 | 宁波青缇工业设计有限公司 | Equipment to automobile parts panel beating |
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| Publication number | Publication date |
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| CN113747727B (en) | 2023-03-21 |
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