CN213028005U - Digital broadcasting equipment is used in teaching - Google Patents

Digital broadcasting equipment is used in teaching Download PDF

Info

Publication number
CN213028005U
CN213028005U CN202022531418.9U CN202022531418U CN213028005U CN 213028005 U CN213028005 U CN 213028005U CN 202022531418 U CN202022531418 U CN 202022531418U CN 213028005 U CN213028005 U CN 213028005U
Authority
CN
China
Prior art keywords
plate
movable plate
clamping jaw
plate body
folding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN202022531418.9U
Other languages
Chinese (zh)
Inventor
王源
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yuncheng University
Original Assignee
Yuncheng University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yuncheng University filed Critical Yuncheng University
Priority to CN202022531418.9U priority Critical patent/CN213028005U/en
Application granted granted Critical
Publication of CN213028005U publication Critical patent/CN213028005U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Electrically Operated Instructional Devices (AREA)

Abstract

The utility model discloses a digital broadcasting device for teaching, which belongs to the technical field of digital teaching and is used for solving the technical problems that the portable broadcasting device used in the prior art does not have the damping function, is easy to damage and has poor protection capability when being vibrated or collided by external force; the utility model is provided with a clamping jaw which is used for clamping the equipment main machine; the supporting plate comprises a movable plate and a base sleeved at the lower part of the movable plate; and a cover removably covering over the movable plate; the lower surface of the movable plate is provided with at least one buffer piece of an elastic structure for supporting the movable plate to be far away from the base; the upper surface of the movable plate is movably connected with a folding plate which can be unfolded in a straight line shape or folded in a V shape; the utility model discloses a folding plate, including the folded sheet, the folded sheet is folded to the fly leaf, the folded sheet is connected with the clamping jaw on the folded sheet, be connected with on the folded sheet the clamping jaw so that when the folded sheet is the V font folding the clamping jaw with the fly leaf upper surface forms the slope contained angle, the utility model discloses novel structure, stability is good, uses comfortable, convenient beneficial effect.

Description

Digital broadcasting equipment is used in teaching
Technical Field
The utility model relates to a digital teaching technical field especially relates to a digital broadcasting equipment is used in teaching.
Background
Along with the development of science and technology, digital teaching is gradually started, so that the young shoulders of students are not carrying heavy schoolbag, the digital teaching refers to that teachers and learners follow the modern education theory and rule in the digital teaching environment, digital teaching resources are applied, the teaching activities of compound talents with innovation consciousness and innovation capability, which are suitable for the needs of the new century, are cultivated in a digital teaching mode, and portable broadcasting equipment is needed in the digital teaching;
the portable broadcasting equipment used in the prior art does not have a shock absorption function, is easy to damage when being vibrated or collided by external force, and has poor protection capability, so that the digital broadcasting equipment for teaching needs to be provided to solve the technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defect that prior art exists, providing a novel structure, stability is good, uses comfortable, convenient a digital broadcasting equipment for teaching.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model discloses a digital broadcasting equipment is used in teaching, include:
the clamping jaw is used for clamping the equipment main machine;
the supporting plate comprises a movable plate and a base sleeved at the lower part of the movable plate; and
a cover removably covering over the movable plate;
the lower surface of the movable plate is provided with at least one buffer piece of an elastic structure for supporting the movable plate to be far away from the base;
the upper surface of the movable plate is movably connected with a folding plate which can be unfolded in a straight line shape or folded in a V shape;
the folding plate is fixedly connected with the clamping jaw, so that when the folding plate is folded in a V shape, the clamping jaw and the upper surface of the movable plate form an inclined included angle.
Furthermore, the outer wall of the base is connected with the box cover through a horizontal guide rail in a sliding manner, so that the box cover is covered above the movable plate or the box cover is arranged on the lower portion of the base.
Furthermore, the inner wall of the base is provided with a limiting component for blocking the movable plate from separating from the base.
Furthermore, the limiting component comprises a limiting part fixedly connected with the base and an avoidance groove formed in the movable plate;
the avoidance groove comprises a first limit position and a second limit position, and the limiting part can move between the first limit position and the second limit position.
Furthermore, a containing groove is formed in the upper surface of the movable plate, and the folding plate is distributed in the containing groove;
the accommodating groove extends along the width direction of the movable plate.
Furthermore, the folding plate is in a long strip plate structure, one end of the folding plate is rotatably connected with the movable plate, and the other end of the folding plate is slidably connected with the movable plate;
the folding plate is also provided with a locking component for locking the folding plate and the movable plate.
Further, the folding plate comprises a first plate body rotationally connected with the movable plate and a second plate body rotationally connected to the tail end of the first plate body; and
a third plate body rotatably connected to the end of the second plate body;
the clamping jaw is fixedly connected to the second plate body;
the second plate body is connected with the movable plate in a sliding mode, and the end, far away from the first plate body, of the second plate body is capable of being unfolded in a straight line shape or folded in a V shape;
the locking part is arranged on the third plate body.
Furthermore, the locking component comprises a locking rod which penetrates through the third plate body and is in threaded connection with the third plate body and a plurality of locking holes which are formed in the movable plate;
the lock rod is in threaded connection with the locking hole at any position,
when the lock rod is in threaded connection with the locking hole, the sliding position of the second plate body is locked, the lock rod is separated from the locking hole, and the second plate body can slide freely relative to the movable plate.
Further, the clamping jaw can telescopically clamp the equipment main machine in a tensioning state.
Further, the clamping jaws comprise an upper clamping jaw and a lower clamping jaw;
the lower clamping jaw is sleeved outside the upper clamping jaw, the upper clamping jaw passes through the elastic part inside the lower clamping jaw and can be flexibly connected with the lower clamping jaw, and the upper clamping jaw and a cantilever oppositely arranged on the side part of the lower clamping jaw form a clamping space of the clamping equipment host.
In the technical scheme, the utility model provides a pair of digital broadcasting equipment is used in teaching, beneficial effect:
1. the utility model relates to a supporting plate comprises a movable plate and a base, the middle part of the lower surface of the movable plate is in contact with the upper surface of the base through a buffer piece, the upper surface of the movable plate is fixedly connected with a folding plate, the upper part of the folding plate is fixedly connected with a clamping jaw of a clamping equipment host, the clamping jaw is flexibly supported by the movable plate, when the base is vibrated, the vibration can be timely absorbed, the vibration is effectively prevented from being transmitted to the clamping jaw, the effective protection effect on the equipment host on the clamping jaw is achieved, the service life of the equipment host is further prolonged, in addition, a box cover is covered above the movable plate, when the equipment host is not used, the box cover can be covered above the movable plate, the damage of the;
2. the utility model discloses a folded sheet, folded sheet can be that a style of calligraphy expandes or the V font is folding, and when needs use, the folded sheet is the V font and folds, and the clamping jaw forms the slope contained angle with the fly leaf upper surface, conveniently uses the equipment host computer aslope, and the improve equipment host computer uses travelling comfort and convenience.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is an axonometric view of a digital broadcasting apparatus for teaching of the present invention;
fig. 2 is a front view of a digital broadcasting apparatus for teaching according to the present invention;
fig. 3 is a cross-sectional view of a digital broadcasting apparatus for teaching according to the present invention;
fig. 4 is a cross-sectional view of another embodiment of a digital broadcasting apparatus for teaching according to the present invention;
fig. 5 is a cross-sectional view of a digital broadcasting apparatus clamping jaw for teaching of the utility model;
fig. 6 is an axonometric view of another embodiment of the digital broadcasting equipment for teaching of the utility model.
Description of reference numerals:
10. a clamping jaw; 11. an upper clamping jaw; 12. a lower jaw; 13. an elastic member;
20. a movable plate; 21. a containing groove; 22. a buffer member;
30. a base; 31. a horizontal guide rail;
40. a box cover;
50. folding the board; 51. a first plate body; 52. a second plate body; 53. a third plate body;
60. a limiting component; 61. a limiting member; 62. an avoidance groove;
70. a locking member; 71. a lock lever; 72. and a locking hole.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1;
the utility model relates to a digital broadcasting equipment is used in teaching, include:
a clamping jaw 10 for clamping the equipment main machine;
the supporting plate comprises a movable plate 20 and a base 30 sleeved at the lower part of the movable plate 20; and
a cover 40 removably covering the movable plate 20;
at least one elastic buffer 22 for supporting the movable plate 20 away from the base 30 is distributed on the lower surface of the movable plate 20;
the upper surface of the movable plate 20 is movably connected with a folding plate 50 which can be unfolded in a straight line shape or folded in a V shape;
the folding plate 50 is fixedly connected with the clamping jaw 10, so that when the folding plate 50 is folded in a V shape, the clamping jaw 10 forms an inclined included angle with the upper surface of the movable plate.
Specifically, in the structure, the base 30 is a rectangular parallelepiped structure, the movable plate 20 is sleeved on the upper portion of the base 30, the middle portion of the lower surface of the movable plate 20 is in contact with the upper surface of the base 30 through the buffering members 22, in order to ensure the stability of the movable plate 20, the number of the buffering members 22 may be four, the four buffering members 22 are distributed at four corners of the base 30, and the buffering members 22 may be compression springs or rubber members in the prior art or other elastic members capable of playing a damping role;
the movable plate 20 can be made of a rubber plate with vibration absorption performance, the upper surface of the movable plate 20 is fixedly connected with a folding plate 50, the upper part of the folding plate 50 is fixedly connected with a clamping jaw 10 for clamping the equipment host, the clamping jaw 10 is flexibly supported by the movable plate 20, when the base 30 is vibrated, the vibration can be timely absorbed, the vibration is effectively prevented from being transmitted to the clamping jaw 10, the equipment host on the clamping jaw 10 is effectively protected, the service life of the equipment host is further prolonged, in addition, a box cover 40 is covered above the movable plate 20, when the equipment host is not used, the box cover 40 can be covered above the movable plate 20, the equipment host is prevented from being damaged due to impact of external force, and the service life of the equipment host is further prolonged;
the folding plate 50 can be unfolded in a straight line shape or folded in a V shape, when the cervical vertebra rehabilitation training device is needed to be used, the folding plate 50 is folded in the V shape, the clamping jaw 10 and the upper surface of the movable plate form an inclined included angle, the main machine of the device can be conveniently used in an inclined mode, the use comfort of the main machine of the device is improved, and the cervical vertebra injury caused by long-term head lowering of a user is avoided;
as shown in fig. 1;
preferably, the outer wall of the base 30 is slidably connected to the cover 40 by the horizontal guide rail 31, so that the cover 40 covers the movable plate 20 or the cover 40 is mounted on the lower portion of the base 30. By arranging the horizontal guide rails 31 on the two opposite outer walls of the base 30, the case cover 40 can be covered above the movable plate 20 in a drawing manner, as shown in fig. 6, when the main machine of the device needs to be used, the case cover 40 is removed, and the case cover 40 can be further accommodated at the lower part of the base 30, so that the occupied space is reduced, and the use is convenient;
see fig. 2 and 3;
preferably, the inner wall of the base 30 is provided with a stopper 60 for stopping the movable plate 20 from being separated from the base 30. The base 30 is provided with a limiting component 60 on the four side walls. Preferably, the limiting component 60 includes a limiting member 61 fixedly connected to the base 30 and an avoiding groove 62 opened on the movable plate 20; the avoiding groove 62 comprises a first extreme position and a second extreme position between which the limiting member 61 is displaceable. When the base 30 is vibrated, the buffer body 22 supports the movable plate 20 to move up and down, and the limiting member 61 moves between the first limit position and the second limit position of the avoiding groove 62, so that the movable plate 20 and the base 30 are effectively connected, and the reliability is high;
as shown in fig. 1;
preferably, the movable plate 20 has a receiving groove 21 formed on the upper surface thereof, and the folding plate 50 is disposed in the receiving groove 21; the receiving groove 21 extends in the width direction of the movable plate 20. The folding plate 50 is embedded on the upper surface of the movable plate 20 through the containing groove, as shown in fig. 4, when the main machine of the device is not used, the folding plate 50 is unfolded in a straight line shape, the upper surface of the clamping jaw 10 is coplanar with the movable plate 20, the structure is compact, meanwhile, the main machine of the device is prevented from being suspended on the movable plate 20, and the structural stability is improved;
as shown in fig. 3;
preferably, the folding plate 50 is a long strip plate structure, one end of the folding plate 50 is rotatably connected with the movable plate 20, and the other end is slidably connected with the movable plate 20; the folding plate 50 is further provided with a locking member 70 for locking the folding plate 50 and the movable plate 20. In the structure, the folding plate 50 is fixedly connected with the movable plate 20 through the locking component, and when the folding plate is used, the folding plate 50 can be unfolded at any angle, so that the use comfort of the main machine of the equipment is further improved;
preferably, the folding plate 50 includes a first plate 51 rotatably coupled to the movable plate 20, a second plate 52 rotatably coupled to an end of the first plate 51; and a third plate 53 rotatably coupled to an end of the second plate 52; the second plate body 52 is fixedly connected with the clamping jaw 10; the end of the second plate 52 far away from the first plate 51 is slidably connected with the movable plate 20, and the first plate 51 and the second plate 52 can be unfolded in a straight shape or folded in a V shape; the third plate 53 is provided with a locking member 70. In the structure, the folding plate 50 comprises three plate bodies, a first plate body 51, a second plate body 52 and a third plate body 53 are sequentially and rotatably connected, the second plate body 52 is fixedly connected with the clamping jaw 10, when the folding plate is used, the clamping jaw 10 is driven by the second plate body 52 to be folded in a V shape with the first plate body 51, a locking part 70 is arranged on the third plate body 53, and when the first plate body 51 and the second plate body 52 are folded, the third plate body 53 is kept parallel to the surface of the movable plate 20 and is fixedly connected with the movable plate 20 through the locking part 70;
as shown in fig. 3;
preferably, the locking member 70 includes a locking bar 71 penetrating through the third plate 53 and screwed to the third plate 53, and a plurality of locking holes 72 opened on the movable plate 20; the lock lever 71 is screwed with the locking hole 72 at an arbitrary position, wherein when the lock lever 71 is screwed with the locking hole 72, the sliding position of the second plate 52 is locked, the lock lever 71 is disengaged from the locking hole 72, and the second plate 52 can arbitrarily slide with respect to the movable plate 20. In this structure, the locking member 70 controls the first plate 51 and the second plate 52 to be folded or unfolded, so that the clamping jaw 10 can stably clamp the host machine equipment, and the reliability is high;
as shown in fig. 5;
preferably, the clamping jaw 10 can telescopically clamp the equipment main body in a tensioning state. The clamping jaw 10 can be used for clamping the equipment host machine in a telescopic mode, so that the clamping jaw 10 can be conveniently used for clamping equipment host machines of different models, and the universality of the clamping jaw is improved; preferably, the jaw 10 comprises an upper jaw 11 and a lower jaw 12; the lower clamping jaw 12 is sleeved outside the upper clamping jaw 11, the upper clamping jaw 11 can be flexibly and movably connected with the lower clamping jaw 12 through an elastic part 13 inside the lower clamping jaw 12, and a cantilever oppositely arranged at the side parts of the upper clamping jaw 11 and the lower clamping jaw 12 forms a clamping space of the clamping equipment host. In the structure, the lower clamping jaw 12 is fixedly connected with the second plate body 52, when the structure is used, the upper clamping jaw 11 is stretched, the equipment main machine is placed in the clamping space, the upper clamping jaw 11 is loosened, and the equipment main machine is fixedly connected with the clamping jaw 10, so that the structure is convenient to use and reliable in connection;
in the above technical solution, the utility model provides a digital broadcasting equipment for teaching;
a method of use; when the device host needs to be used, the box cover 40 is pulled, the box cover 40 is removed, the box cover is stored at the lower part of the base 30, the movable plate 20 is exposed outside, the lock rod 71 is rotated to separate the lock rod 71 from the locking hole 72, the upper clamping jaw 11 is moved to fold the first plate body 51 and the second plate body 52 in a V shape, after the folding angles of the first plate body 51 and the second plate body 52 are adjusted, the lock rod 71 is in threaded connection with the locking hole 72 to fix the folding angles of the first plate body 51 and the second plate body 52, and the device host is obliquely arranged above the movable plate 20;
has the advantages that:
1. the utility model relates to a supporting plate comprises a movable plate and a base, the middle part of the lower surface of the movable plate is in contact with the upper surface of the base through a buffer piece, the upper surface of the movable plate is fixedly connected with a folding plate, the upper part of the folding plate is fixedly connected with a clamping jaw of a clamping equipment host, the clamping jaw is flexibly supported by the movable plate, when the base is vibrated, the vibration can be timely absorbed, the vibration is effectively prevented from being transmitted to the clamping jaw, the effective protection effect on the equipment host on the clamping jaw is achieved, the service life of the equipment host is further prolonged, in addition, a box cover is covered above the movable plate, when the equipment host is not used, the box cover can be covered above the movable plate, the damage of the;
2. the utility model discloses a folded sheet, folded sheet can be that a style of calligraphy expandes or the V font is folding, and when needs use, the folded sheet is the V font and folds, and the clamping jaw forms the slope contained angle with the fly leaf upper surface, conveniently uses the equipment host computer aslope, and the improve equipment host computer uses travelling comfort and convenience.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims (10)

1. A digital broadcasting apparatus for teaching, comprising:
a clamping jaw (10) used for clamping the equipment main machine;
the supporting plate comprises a movable plate (20) and a base (30) sleeved at the lower part of the movable plate (20); and
a cover (40) removably coverable over the movable plate (20);
at least one buffer piece (22) of an elastic structure for supporting the movable plate (20) to be far away from the base (30) is distributed on the lower surface of the movable plate (20);
the upper surface of the movable plate (20) is movably connected with a folding plate (50) which can be unfolded in a straight line shape or folded in a V shape;
the clamping jaw (10) is fixedly connected to the folding plate (50), so that when the folding plate (50) is folded in a V shape, an inclined included angle is formed between the clamping jaw (10) and the upper surface of the movable plate.
2. A digital broadcasting apparatus for teaching according to claim 1, wherein;
the outer wall of the base (30) is connected with the box cover (40) in a sliding mode through a horizontal guide rail (31), so that the box cover (40) covers the movable plate (20) or the box cover (40) is installed on the lower portion of the base (30).
3. A digital broadcasting apparatus for teaching according to claim 2, wherein;
the inner wall of the base (30) is provided with a limiting component (60) for blocking the movable plate (20) from separating from the base (30).
4. A digital broadcasting apparatus for teaching according to claim 3, wherein;
the limiting component (60) comprises a limiting piece (61) fixedly connected with the base (30) and an avoiding groove (62) arranged on the movable plate (20);
the avoidance groove (62) comprises a first extreme position and a second extreme position, and the limiting member (61) can displace between the first extreme position and the second extreme position.
5. A digital broadcasting apparatus for teaching according to claim 1, wherein;
an accommodating groove (21) is formed in the upper surface of the movable plate (20), and the folding plate (50) is arranged in the accommodating groove (21);
the accommodating groove (21) extends along the width direction of the movable plate (20).
6. An educational digital broadcasting apparatus according to any one of claims 1 to 5, wherein;
the folding plate (50) is of a long strip plate structure, one end of the folding plate (50) is rotatably connected with the movable plate (20), and the other end of the folding plate (50) is slidably connected with the movable plate (20);
wherein, the folding plate (50) is also provided with a locking component (70) for locking the folding plate (50) and the movable plate (20).
7. A digital broadcasting apparatus for teaching according to claim 6, wherein;
the folding plate (50) comprises a first plate body (51) rotatably connected with the movable plate (20) and a second plate body (52) rotatably connected with the tail end of the first plate body (51); and
a third plate body (53) rotatably connected to the end of the second plate body (52);
the clamping jaw (10) is fixedly connected to the second plate body (52);
the end, far away from the first plate body (51), of the second plate body (52) is connected with the movable plate (20) in a sliding mode, and the first plate body (51) and the second plate body (52) can be unfolded in a straight shape or folded in a V shape;
the locking component (70) is arranged on the third plate body (53).
8. A digital broadcasting apparatus for teaching according to claim 7, wherein;
the locking component (70) comprises a locking rod (71) which penetrates through the third plate body (53) and is in threaded connection with the third plate body (53) and a plurality of locking holes (72) which are formed in the movable plate (20);
the lock rod (71) is in threaded connection with the locking hole (72) at any position;
when the lock rod (71) is in threaded connection with the locking hole (72), the sliding position of the second plate body (52) is locked, the lock rod (71) is separated from the locking hole (72), and the second plate body (52) can slide randomly relative to the movable plate (20).
9. A digital broadcasting apparatus for teaching according to claim 7, wherein;
the clamping jaw (10) can telescopically clamp the equipment main machine in a tensioning state.
10. A digital broadcasting apparatus for teaching according to claim 9, wherein;
the clamping jaw (10) comprises an upper clamping jaw (11) and a lower clamping jaw (12);
lower clamping jaw (12) cover is established it is outside to go up clamping jaw (11), go up clamping jaw (11) and pass through down inside elastic component (13) of clamping jaw (12) can stretch out and draw back with lower clamping jaw (12) swing joint, go up clamping jaw (11) with the relative cantilever that sets up of lower clamping jaw (12) lateral part forms the centre gripping space of centre gripping equipment host computer.
CN202022531418.9U 2020-11-05 2020-11-05 Digital broadcasting equipment is used in teaching Expired - Fee Related CN213028005U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022531418.9U CN213028005U (en) 2020-11-05 2020-11-05 Digital broadcasting equipment is used in teaching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022531418.9U CN213028005U (en) 2020-11-05 2020-11-05 Digital broadcasting equipment is used in teaching

Publications (1)

Publication Number Publication Date
CN213028005U true CN213028005U (en) 2021-04-20

Family

ID=75482114

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022531418.9U Expired - Fee Related CN213028005U (en) 2020-11-05 2020-11-05 Digital broadcasting equipment is used in teaching

Country Status (1)

Country Link
CN (1) CN213028005U (en)

Similar Documents

Publication Publication Date Title
CN213028005U (en) Digital broadcasting equipment is used in teaching
CN205405931U (en) English translation explanation display device
CN107695547B (en) A kind of man-pack laser unit storage device
CN204472289U (en) Primary school's multi-functional blackboard
CN209928629U (en) English teaching aid convenient to carry
CN209962490U (en) A appurtenance for business english teaching
CN206516142U (en) A kind of dust-proof Portable English class support frame
CN109215453A (en) A kind of higher mathematics Function Teaching demonstrator
CN208673567U (en) A kind of English teaching foldable display board
CN214152157U (en) Pronunciation contrast mirror for English teaching
CN108732323B (en) Portable water toxicity detection device with receive and release platform
CN221730028U (en) Exploration drawing device
CN212088515U (en) Be applied to breakage-proof no dust chalk storage device of classroom teaching
CN214341120U (en) Teaching material collection device for teaching
CN214432650U (en) Multimedia teaching platform
CN214541199U (en) Teaching aid is led to portable movie & TV
CN203290440U (en) Book supporting machine for teaching blackboard writing
CN209928933U (en) Tour guide explaining device for tourism
CN210574545U (en) Multifunctional teaching aid for physical teaching
CN110341774A (en) A kind of physical education equipment transport device
CN214295244U (en) English teaching board structure convenient to operation demonstration
CN215450563U (en) English teaching display device
CN211827611U (en) Multimedia business administration teaching equipment
CN208469402U (en) A kind of novel portable English teaching aid
CN220855897U (en) Contrast teaching training equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20210420

Termination date: 20211105

CF01 Termination of patent right due to non-payment of annual fee