CN112767785A - Multi-functional teaching device of thing networking of portable magnetism adsorption - Google Patents
Multi-functional teaching device of thing networking of portable magnetism adsorption Download PDFInfo
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- CN112767785A CN112767785A CN202110041353.6A CN202110041353A CN112767785A CN 112767785 A CN112767785 A CN 112767785A CN 202110041353 A CN202110041353 A CN 202110041353A CN 112767785 A CN112767785 A CN 112767785A
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- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
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Abstract
The invention provides a portable magnetic adsorption multifunctional teaching device for the Internet of things, relates to the technical field of teaching equipment, and solves the problems that on one hand, dust prevention of jacks in a non-use state cannot be realized, and on the other hand, a dust prevention structure cannot realize auxiliary fixation of plugs at the same time; the vibration type ash removal of the plate body can not be realized while the suspension is realized through structural improvement. A portable magnetic adsorption Internet of things multifunctional teaching device comprises a demonstration board main body; the demonstration board main body is provided with two suspension seats, and the demonstration board main body is inserted with a plug. The jack is in a shielding state when the elastic telescopic box is extended, and the elastic telescopic box forms a dustproof structure of the jack; the plug is matched with the jack, the plug is provided with a clamping groove A, and the clamping groove A is matched with the head end of the elastic telescopic box; when the plug is plugged in the jack, the head end of the elastic telescopic box is in a plugging state with the clamping groove A, so that the auxiliary fixation of the plug can be realized.
Description
Technical Field
The invention belongs to the technical field of teaching equipment, and particularly relates to a portable magnetic-adsorption multifunctional teaching device for the Internet of things.
Background
With the rapid development of the internet of things technology, relevant professions of the internet of things are also successively set up in all schools and middle-position schools, and an electronic teaching board is needed to be used for teaching during teaching.
As in application No.: CN201920812077.7, a multi-functional teaching device of portable magnetism absorption thing networking, including portable base, magnetism absorption bottom plate, touch-sensitive screen, sensor acquisition module, actuating mechanism control module, central intelligent gateway and power module, the magnetism adsorbs the bottom plate to set up on portable base, touch-sensitive screen, sensor acquisition module, actuating mechanism control module and central intelligent gateway set up on the magnetism adsorbs the bottom plate, power module and the power interface connection of magnetism absorption bottom plate. Portable magnetism adsorb multi-functional teaching device of thing networking, simple structure, reasonable, convenient to use, the application is with low costs, adaptability is good, provides a modern design, rational in infrastructure, conveniently carries, experiment module independent assortment, the multi-functional teaching device of thing networking that data communication mode freely switches has very high spreading value.
The electronic teaching board for the internet of things similar to the above application has the following defects at present:
one is that the existing device generally needs to be plugged with a USB, but the existing device cannot realize the dustproof of the jack in a non-use state when in use, and on the other hand, the dustproof structure cannot realize the auxiliary fixation of the plug at the same time; moreover, the existing device has a single suspension structure, and vibration type ash removal of the plate body cannot be realized while suspension is realized through structural improvement.
Therefore, in view of the above, research and improvement are performed on the existing structure and defects, and a portable magnetic-adsorption multifunctional teaching device for the internet of things is provided, so as to achieve the purpose of higher practical value.
Disclosure of Invention
In order to solve the technical problems, the invention provides a portable magnetic-adsorption multifunctional teaching device for the internet of things, which aims to solve the problems that the existing device generally needs to be plugged with a USB (universal serial bus) when in use, but the existing device cannot realize the dustproof of jacks in a non-use state when in use, and cannot realize the auxiliary fixation of plugs simultaneously due to a dustproof structure; moreover, the existing device has a single suspension structure, and cannot realize vibration type ash removal of the plate body while realizing suspension through structural improvement.
The invention relates to a portable magnetic adsorption multifunctional teaching device of an internet of things, which is realized by the following specific technical means:
a portable magnetic adsorption Internet of things multifunctional teaching device comprises a demonstration board main body; the demonstration board main body is provided with two suspension seats, a plug is inserted into the demonstration board main body, and the demonstration board main body is provided with a clamping structure; the demonstration board main body comprises jacks and elastic telescopic boxes, the jacks are arranged on the demonstration board main body, and the elastic telescopic boxes are fixedly connected to the demonstration board main body through bolts; the jack is in a shielding state when the elastic telescopic box is extended, and the elastic telescopic box forms a dustproof structure of the jack; the plug comprises a clamping groove A, the plug is matched with the jack, the plug is provided with the clamping groove A, and the clamping groove A is matched with the head end of the elastic telescopic box; when the plug is inserted in the jack, the head end of the elastic telescopic box is in an inserted state with the clamping groove A.
Furthermore, the demonstration board main body comprises supporting blocks and magnets, the demonstration board main body is of a rectangular plate-shaped structure, and the bottom end face of the demonstration board main body is symmetrically and fixedly connected with the two supporting blocks through bolts; two magnets are embedded in each supporting block, and the two supporting blocks jointly form a supporting type heat dissipation structure at the bottom of the demonstration board main body.
Furthermore, the demonstration board main body also comprises a baffle, the bottom end face of the demonstration board main body is welded with a baffle, and the baffle is of a rectangular plate-shaped structure; the head end and the tail end of baffle link to each other with two supporting shoe weldings respectively, and the baffle has constituteed the palirrhea formula heat radiation structure in demonstration board main part bottom.
Furthermore, the demonstration board main body also comprises a baffle seat and a slag discharge hole, the front end face of the demonstration board main body is welded with the baffle seat, the baffle seat is of a reversed-square structure, and the baffle seat forms a protection structure on the front side of the demonstration board main body; the bottom end face of the baffle seat is in a rectangular array shape and is provided with slag discharge holes, and the slag discharge holes in the rectangular array shape jointly form a cleaning structure for residues on the inner wall of the baffle seat.
Furthermore, the suspension seat comprises an elastic telescopic rod and a protrusion, the bottom end face of the suspension seat is welded with the elastic telescopic rod, and the head end of the elastic telescopic rod is of a hemispherical structure; the bulges are welded on the bottom end surface of the demonstration board main body in a rectangular array shape and are of semi-cylindrical structures; elastic telescopic link and protruding elastic contact, and elastic telescopic link and protruding vibrations formula structure that has constituteed the demonstration board main part jointly.
Furthermore, the clamping structure comprises an adjusting rod and a rotating seat, the adjusting rod is rotatably connected to the baffle, the head end and the tail end of the adjusting rod are respectively in threaded connection with the rotating seat, and the front end face of the rotating seat is in contact with the rear end face of the demonstration board main body; the screw thread opposite direction of adjusting rod head end and tail end, and the adjusting rod has constituteed the synchronous reverse regulation formula structure of two seats that rotate.
Furthermore, the clamping structure also comprises two clamping blocks, two elastic clamping pins and a clamping groove B, wherein the two clamping blocks are respectively and rotatably connected to the two rotating seats, and the rotating seats form a rotary hidden structure of the clamping blocks; two clamping grooves B are formed in the rotating seat, and the included angle between the two clamping grooves B is 90 degrees; install elasticity bayonet lock on the grip block, and elasticity bayonet lock and joint groove B phase-match to elasticity bayonet lock and joint groove B have constituteed the assistance-localization real-time structure of grip block jointly.
Furthermore, the clamping structure still includes the draw-in groove, the draw-in groove is equipped with two altogether, and two draw-in grooves set up respectively on two grip blocks to two draw-in grooves are the V column structure.
Compared with the prior art, the invention has the following beneficial effects:
through the arrangement of the elastic telescopic box and the plug, firstly, the demonstration board main body is provided with the jack, and the demonstration board main body is fixedly connected with the elastic telescopic box through the bolt; the jack is in a shielding state when the elastic telescopic box is extended, and the elastic telescopic box forms a dustproof structure of the jack; secondly, the plug is matched with the jack, the plug is provided with a clamping groove A, and the clamping groove A is matched with the head end of the elastic telescopic box; when the plug is plugged in the jack, the head end of the elastic telescopic box is in a plugging state with the clamping groove A, so that the auxiliary fixation of the plug can be realized.
The fixing structure is improved, firstly, an elastic telescopic rod is welded on the bottom end face of the suspension seat, and the head end of the elastic telescopic rod is of a hemispherical structure; the bulges are welded on the bottom end surface of the demonstration board main body in a rectangular array shape and are of semi-cylindrical structures; the elastic telescopic rod is in elastic contact with the protrusion, and the elastic telescopic rod and the protrusion form a vibration type structure of the demonstration board main body together, so that the vibration and the falling of residues on the demonstration board main body can be realized; secondly, the adjusting rod is rotatably connected to the baffle, the head end and the tail end of the adjusting rod are respectively in threaded connection with a rotating seat, and the front end face of the rotating seat is in contact with the rear end face of the demonstration board main body; the thread directions of the head end and the tail end of the adjusting rod are opposite, and the adjusting rod forms a synchronous reverse adjusting structure of the two rotating seats, so that the quick adjustment of the two rotating seats can be realized; thirdly, two clamping blocks are arranged, the two clamping blocks are respectively and rotatably connected to the two rotating seats, and the rotating seats form a rotary hidden structure of the clamping blocks; two clamping grooves B are formed in the rotating seat, and the included angle between the two clamping grooves B is 90 degrees; the clamping block is provided with an elastic clamping pin, the elastic clamping pin is matched with the clamping groove B, and the elastic clamping pin and the clamping groove B jointly form an auxiliary positioning structure of the clamping block; fourthly, two clamping grooves are arranged on the two clamping blocks respectively, and the two clamping grooves are of V-shaped structures, so that the clamping of cylindrical objects can be realized.
Drawings
Fig. 1 is a schematic axial view of the present invention.
Fig. 2 is an enlarged schematic view of fig. 1 at a.
Fig. 3 is a schematic axial view of the present invention in another direction of fig. 1.
Fig. 4 is an enlarged view of the structure of fig. 3B according to the present invention.
Fig. 5 is an enlarged view of the structure of fig. 3 according to the present invention.
Fig. 6 is a schematic view of the present invention in an axially disassembled configuration as shown in fig. 3.
Fig. 7 is an enlarged view of fig. 6D according to the present invention.
Fig. 8 is an enlarged view of fig. 6E according to the present invention.
Fig. 9 is an enlarged view of the structure of fig. 6 according to the present invention.
In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:
1. a demonstration board main body; 101. a support block; 102. a magnet; 103. a baffle plate; 104. a jack; 105. an elastic telescopic box; 106. a blocking seat; 107. a slag discharge hole; 2. a suspension seat; 201. an elastic telescopic rod; 202. a protrusion; 3. a plug; 301. a clamping groove A; 4. a clamping structure; 401. an adjusting lever; 402. a rotating seat; 403. a clamping block; 404. an elastic bayonet lock; 405. a clamping groove B; 406. a clamping groove.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example (b):
as shown in figures 1 to 9:
the invention provides a portable magnetic adsorption multifunctional teaching device for the Internet of things, which comprises a demonstration board main body 1; the demonstration board main body 1 is provided with two suspension seats 2, the demonstration board main body 1 is inserted with a plug 3, and the demonstration board main body 1 is provided with a clamping structure 4; referring to fig. 9, the demonstration board main body 1 includes a jack 104 and an elastic telescopic box 105, the jack 104 is disposed on the demonstration board main body 1, and the elastic telescopic box 105 is fixedly connected to the demonstration board main body 1 through a bolt; when the elastic telescopic box 105 is extended, the jack 104 is in a shielding state, and the elastic telescopic box 105 forms a dustproof structure of the jack 104; referring to fig. 5 and 9, the plug 3 includes a clamping groove a301, the plug 3 is matched with the jack 104, the plug 3 is provided with a clamping groove a301, and the clamping groove a301 is matched with the head end of the elastic telescopic box 105; when the plug 3 is plugged in the jack 104, the head end of the elastic telescopic box 105 is in a plugging state with the clamping groove A301, so that the auxiliary fixation of the plug 3 can be realized.
Referring to fig. 3, the demonstration board body 1 includes supporting blocks 101 and magnets 102, the demonstration board body 1 is a rectangular plate-shaped structure, and two supporting blocks 101 are fixedly connected to the bottom end surface of the demonstration board body 1 symmetrically through bolts; two magnets 102 are embedded in each supporting block 101, and the two supporting blocks 101 jointly form a supporting type heat dissipation structure at the bottom of the demonstration board main body 1.
Referring to fig. 3, the demonstration board main body 1 further includes a baffle 103, the bottom end face of the demonstration board main body 1 is welded with a baffle 103, and the baffle 103 is a rectangular plate-shaped structure; the head end and the tail end of baffle 103 link to each other with two supporting shoe 101 butt fusion respectively, and baffle 103 has constituteed the palirrhea formula heat radiation structure in demonstration board main part 1 bottom, and the interception through baffle 103 can realize palirrhea when wind-force enters into demonstration board main part 1 bottom, and then has strengthened the radiating effect.
Referring to fig. 1 and fig. 2, the demonstration board main body 1 further includes a blocking seat 106 and a slag discharge hole 107, the blocking seat 106 is welded to the front end face of the demonstration board main body 1, the blocking seat 106 is a rectangular-shaped structure, and the blocking seat 106 constitutes a protective structure on the front side of the demonstration board main body 1; the bottom end surface of the baffle seat 106 is provided with slag discharge holes 107 in a rectangular array shape, and the slag discharge holes 107 in the rectangular array shape jointly form a cleaning structure for residues on the inner wall of the baffle seat 106.
Referring to fig. 3 and 4, the suspension base 2 includes an elastic telescopic rod 201 and a protrusion 202, the bottom end surface of the suspension base 2 is welded with the elastic telescopic rod 201, and the head end of the elastic telescopic rod 201 is of a hemispherical structure; the bulges 202 are welded on the bottom end surface of the demonstration board main body 1 in a rectangular array shape, and the bulges 202 are in a semi-cylindrical structure; elastic telescopic rod 201 and protruding 202 elastic contact, and elastic telescopic rod 201 and protruding 202 have constituteed the vibrations formula structure of demonstration board main part 1 jointly to can realize the vibrations of the residue on the demonstration board main part 1 and fall.
Referring to fig. 6, the clamping structure 4 comprises an adjusting rod 401 and a rotating seat 402, the adjusting rod 401 is rotatably connected to the baffle plate 103, the head end and the tail end of the adjusting rod 401 are respectively in threaded connection with one rotating seat 402, and the front end surface of the rotating seat 402 is in contact with the rear end surface of the demonstration board main body 1; the thread directions of the head end and the tail end of the adjusting rod 401 are opposite, and the adjusting rod 401 forms a synchronous reverse adjusting structure of the two rotating seats 402, so that the quick adjustment of the two rotating seats 402 can be realized.
Referring to fig. 6, fig. 7 and fig. 8, the clamping structure 4 further includes two clamping blocks 403, two elastic clamping pins 404 and a clamping groove B405, the two clamping blocks 403 are respectively rotatably connected to the two rotating bases 402, and the rotating bases 402 constitute a rotary hidden structure of the clamping blocks 403; two clamping grooves B405 are formed in the rotating base 402, and the included angle between the two clamping grooves B405 is 90 degrees; the clamping block 403 is provided with an elastic clamping pin 404, the elastic clamping pin 404 is matched with the clamping groove B405, and the elastic clamping pin 404 and the clamping groove B405 jointly form an auxiliary positioning structure of the clamping block 403.
Referring to fig. 7, the clamping structure 4 further includes two clamping slots 406, two clamping slots 406 are respectively formed on the two clamping blocks 403, and the two clamping slots 406 are both V-shaped structures, so that the cylindrical object can be clamped.
The specific use mode and function of the embodiment are as follows:
when in suspension, an elastic telescopic rod 201 is welded on the bottom end face of the suspension seat 2, and the head end of the elastic telescopic rod 201 is of a hemispherical structure; the bulges 202 are welded on the bottom end surface of the demonstration board main body 1 in a rectangular array shape, and the bulges 202 are in a semi-cylindrical structure; the elastic telescopic rod 201 is in elastic contact with the protrusion 202, and the elastic telescopic rod 201 and the protrusion 202 jointly form a vibration type structure of the demonstration board main body 1, so that the vibration and the falling of residues on the demonstration board main body 1 can be realized;
when the demonstration board is clamped and fixed, firstly, the adjusting rod 401 is rotatably connected to the baffle plate 103, the head end and the tail end of the adjusting rod 401 are respectively in threaded connection with a rotating seat 402, and the front end face of the rotating seat 402 is in contact with the rear end face of the demonstration board main body 1; the thread directions of the head end and the tail end of the adjusting rod 401 are opposite, and the adjusting rod 401 forms a synchronous reverse adjusting structure of the two rotating seats 402, so that the two rotating seats 402 can be quickly adjusted; secondly, two clamping blocks 403 are arranged, the two clamping blocks 403 are respectively connected to the two rotating seats 402 in a rotating manner, and the rotating seats 402 form a rotating hidden structure of the clamping blocks 403; two clamping grooves B405 are formed in the rotating base 402, and the included angle between the two clamping grooves B405 is 90 degrees; an elastic clamping pin 404 is arranged on the clamping block 403, the elastic clamping pin 404 is matched with the clamping groove B405, and the elastic clamping pin 404 and the clamping groove B405 jointly form an auxiliary positioning structure of the clamping block 403; thirdly, two clamping grooves 406 are arranged, the two clamping grooves 406 are respectively arranged on the two clamping blocks 403, and the two clamping grooves 406 are both in a V-shaped structure, so that the clamping of a cylindrical object can be realized;
when the plug 3 is plugged, firstly, the demonstration board main body 1 is provided with the jack 104, and the demonstration board main body 1 is fixedly connected with an elastic telescopic box 105 through a bolt; when the elastic telescopic box 105 is extended, the jack 104 is in a shielding state, and the elastic telescopic box 105 forms a dustproof structure of the jack 104; secondly, the plug 3 is matched with the jack 104, the plug 3 is provided with a clamping groove A301, and the clamping groove A301 is matched with the head end of the elastic telescopic box 105; when the plug 3 is plugged in the jack 104, the head end of the elastic telescopic box 105 is in a plugging state with the clamping groove A301, so that the auxiliary fixation of the plug 3 can be realized.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (8)
1. The utility model provides a multi-functional teaching device of thing networking of portable magnetism absorption which characterized in that: comprises a demonstration board main body (1); the demonstration board comprises a demonstration board main body (1), two hanging seats (2) are mounted on the demonstration board main body (1), a plug (3) is inserted into the demonstration board main body (1), and a clamping structure (4) is mounted on the demonstration board main body (1); the demonstration board main body (1) comprises jacks (104) and elastic telescopic boxes (105), the jacks (104) are arranged on the demonstration board main body (1), and the elastic telescopic boxes (105) are fixedly connected to the demonstration board main body (1) through bolts; when the elastic telescopic box (105) is extended, the jack (104) is in a shielding state, and the elastic telescopic box (105) forms a dustproof structure of the jack (104); the plug (3) comprises a clamping groove A (301), the plug (3) is matched with the jack (104), the plug (3) is provided with the clamping groove A (301), and the clamping groove A (301) is matched with the head end of the elastic telescopic box (105); when the plug (3) is plugged in the jack (104), the head end of the elastic telescopic box (105) is in a plugging state with the clamping groove A (301).
2. The multifunctional teaching device of the internet of things with portable magnetic adsorption of claim 1, characterized in that: the demonstration board main body (1) comprises supporting blocks (101) and magnets (102), the demonstration board main body (1) is of a rectangular plate-shaped structure, and the bottom end face of the demonstration board main body (1) is symmetrically and fixedly connected with the two supporting blocks (101) through bolts; two magnets (102) are inlaid on each supporting block (101), and the two supporting blocks (101) jointly form a supporting type heat dissipation structure at the bottom of the demonstration board main body (1).
3. The multifunctional teaching device of the internet of things with portable magnetic adsorption of claim 1, characterized in that: the demonstration board main body (1) further comprises a baffle (103), the bottom end face of the demonstration board main body (1) is welded with the baffle (103), and the baffle (103) is of a rectangular plate-shaped structure; the head end and the tail end of baffle (103) link to each other with two supporting shoe (101) butt fusion respectively, and baffle (103) have constituteed demonstration board main part (1) bottom counter current formula heat radiation structure.
4. The multifunctional teaching device of the internet of things with portable magnetic adsorption of claim 1, characterized in that: the demonstration board main body (1) further comprises a blocking seat (106) and a slag discharge hole (107), the blocking seat (106) is welded on the front end face of the demonstration board main body (1), the blocking seat (106) is of a reversed-square structure, and the blocking seat (106) forms a protection structure on the front side of the demonstration board main body (1); the bottom end surface of the baffle seat (106) is in a rectangular array shape and is provided with slag discharge holes (107), and the slag discharge holes (107) in the rectangular array shape jointly form a cleaning structure for residues on the inner wall of the baffle seat (106).
5. The multifunctional teaching device of the internet of things with portable magnetic adsorption of claim 1, characterized in that: the suspension seat (2) comprises an elastic telescopic rod (201) and a protrusion (202), the bottom end face of the suspension seat (2) is welded with the elastic telescopic rod (201), and the head end of the elastic telescopic rod (201) is of a hemispherical structure; the bulges (202) are welded on the bottom end surface of the demonstration plate main body (1) in a rectangular array shape, and the bulges (202) are of a semi-cylindrical structure; elastic telescopic rod (201) and protruding (202) elastic contact, and elastic telescopic rod (201) and protruding (202) have constituteed the vibrations formula structure of demonstration board main part (1) jointly.
6. The multifunctional teaching device of the internet of things with portable magnetic adsorption of claim 1, characterized in that: the clamping structure (4) comprises an adjusting rod (401) and a rotating seat (402), the adjusting rod (401) is rotatably connected to the baffle (103), the head end and the tail end of the adjusting rod (401) are respectively in threaded connection with the rotating seat (402), and the front end face of the rotating seat (402) is in contact with the rear end face of the demonstration board main body (1); the thread directions of the head end and the tail end of the adjusting rod (401) are opposite, and the adjusting rod (401) forms a synchronous reverse adjusting structure of the two rotating seats (402).
7. The multifunctional teaching device of the internet of things with portable magnetic adsorption of claim 1, characterized in that: the clamping structure (4) further comprises two clamping blocks (403), elastic clamping pins (404) and clamping grooves B (405), the two clamping blocks (403) are respectively and rotatably connected to the two rotating seats (402), and the rotating seats (402) form a rotary hidden structure of the clamping blocks (403); two clamping grooves B (405) are formed in the rotating seat (402), and the included angle between the two clamping grooves B (405) is 90 degrees; the clamping block (403) is provided with an elastic clamping pin (404), the elastic clamping pin (404) is matched with the clamping groove B (405), and the elastic clamping pin (404) and the clamping groove B (405) jointly form an auxiliary positioning structure of the clamping block (403).
8. The multifunctional teaching device of the internet of things with portable magnetic adsorption of claim 1, characterized in that: the clamping structure (4) further comprises two clamping grooves (406), the two clamping grooves (406) are arranged on the two clamping blocks (403) respectively, and the two clamping grooves (406) are both V-shaped structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110041353.6A CN112767785A (en) | 2021-01-13 | 2021-01-13 | Multi-functional teaching device of thing networking of portable magnetism adsorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110041353.6A CN112767785A (en) | 2021-01-13 | 2021-01-13 | Multi-functional teaching device of thing networking of portable magnetism adsorption |
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| Publication Number | Publication Date |
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| CN112767785A true CN112767785A (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110041353.6A Withdrawn CN112767785A (en) | 2021-01-13 | 2021-01-13 | Multi-functional teaching device of thing networking of portable magnetism adsorption |
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| CN (1) | CN112767785A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017642A (en) * | 2021-11-26 | 2022-02-08 | 明庭果 | Based on building engineering cost presentation device |
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2021
- 2021-01-13 CN CN202110041353.6A patent/CN112767785A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017642A (en) * | 2021-11-26 | 2022-02-08 | 明庭果 | Based on building engineering cost presentation device |
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Application publication date: 20210507 |