CN210169337U - Music stand for piano teaching - Google Patents
Music stand for piano teaching Download PDFInfo
- Publication number
- CN210169337U CN210169337U CN201920759923.3U CN201920759923U CN210169337U CN 210169337 U CN210169337 U CN 210169337U CN 201920759923 U CN201920759923 U CN 201920759923U CN 210169337 U CN210169337 U CN 210169337U
- Authority
- CN
- China
- Prior art keywords
- bearing box
- locking
- music stand
- winding shafts
- bearing
- 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
Links
Images
Landscapes
- Toys (AREA)
Abstract
The utility model discloses a music stand for piano teaching, which comprises a base and a conveyer belt, wherein a height-adjusting rod is arranged on the surface of the base, a bearing box is arranged at the upper end of the height-adjusting rod, the front side surface of the bearing box is provided with an opening, a sealing plate is arranged at the bottom of the inner wall of the bearing box, and the surface of the sealing plate is provided with a horizontal perspective groove in a penetrating way; winding shafts are rotatably arranged on two inner side walls of the bearing box, the two winding shafts are symmetrically distributed, a transmission assembly is arranged between the two winding shafts, and a forward and reverse rotating motor is arranged on the outer side of the bearing box; two ends of the conveying belt are wound and wound on the outer sides of the two winding shafts respectively, and a bearing bag is arranged on the surface of the conveying belt. Has the advantages that: synchronous rotation of the two winding shafts is realized through a forward and reverse rotating motor and a transmission assembly, so that the winding shafts drive the conveying belt to move, and automatic browsing of the music score is realized; the spectrum line played currently is exposed through the perspective groove on the surface of the sealing plate, so that a beginner can be prevented from mistaking the line.
Description
Technical Field
The utility model relates to a music stand technical field, concretely relates to music stand is used in piano teaching.
Background
The piano is a keyboard instrument in Western classical music and is known as the king of the instrument. With the development of society, more and more parents are beginning to let children learn to play pianos. The music stand is an important tool in the piano learning process, is used for placing music scores and is convenient for learners to watch the music scores to perform. However, the existing music stand can not automatically turn pages, needs manual page turning, and has undesirable use effect; meanwhile, in the process of watching the music score, a beginner easily misreads the line number, normal playing practice is influenced, and the use effect is not ideal.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provide a music stand for piano teaching, which solves the problems that the prior music stand in the prior art can not automatically turn pages, needs manual page turning and has undesirable use effect; simultaneously watching the music score, the beginner easily sees the line number of missing, influences normal playing exercise, not ideal scheduling technical problem of result of use. The preferred technical scheme among the technical schemes provided by the utility model realizes the synchronous rotation of two winding shafts through the positive and negative rotation motor and the transmission assembly, so that the winding shafts drive the conveyer belt to move, the automatic browsing of the music score is realized, and the manual page turning is not needed; the perspective groove on the surface of the sealing plate enables the music score line played currently to be exposed, so that a beginner can be prevented from mistakenly seeing the music score line, the normal playing practice is ensured, the using effect is good, and the like, and the technical effects are elaborated below.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a piano teaching is with music stand, including base and conveyer belt, the base surface mounting has the height-adjusting pole, height-adjusting pole upper end is installed and is born the box, bear the box leading flank for the opening, bear the box inner wall bottom and install the rotatory closing plate of vertical direction through the pivot, be used for realizing bear the box open-ended sealing and opening, the closing plate surface runs through and is provided with horizontal perspective groove, bear the box upper surface mounting and be used for locking the locking Assembly fixed to the closing plate;
horizontal winding shafts are rotatably mounted on two inner side walls of the bearing box, the two winding shafts are symmetrically distributed according to the height central line of the bearing box, a transmission assembly for driving the two winding shafts to synchronously rotate is arranged between the two winding shafts, a forward and reverse rotating motor is mounted on the outer side of the bearing box, and the forward and reverse rotating motor is connected with any one winding shaft; the winding rolling is in two respectively at the both ends of conveyer belt the rolling axle outside, the conveyer belt surface is provided with the bearing bag that is used for placing the musical instrument register for easy reference, bearing bag is provided with a plurality ofly, and along the length direction evenly distributed of conveyer belt.
By adopting the music stand for piano teaching, when the device is used, the length of the height-adjusting rod is adjusted, so that the height adjustment of the bearing box is realized, the use requirements of users with different heights can be met, and the application range is wide; the locking and fixing of the sealing plate by the locking assembly are released, the sealing plate is rotated to realize the opening of the bearing box, music score pages for playing are respectively placed in the bearing bag, after the music score pages are placed, the sealing plate is screwed into the bearing box, and the sealing plate is locked and fixed at the opening end of the bearing box through the locking assembly; the forward and reverse rotating motor is started, the forward and reverse rotating motor drives the rolling shafts to rotate, the two rolling shafts synchronously rotate through the transmission assembly, the rolling shafts drive the conveying belt to move, the conveying belt drives the bearing bag to move, automatic browsing of music scores is realized, and a user can watch the music scores through the perspective groove; the device can realize automatic browsing of music scores, does not need manual page turning of a user, reduces the operation difficulty of the user, and is convenient for the user to concentrate on playing practice; through sealing plate surface perspective groove can make the music book of playing at present bare, can avoid the user to watch the music book when seeing the wrong line, ensures the normal clear of the exercise of playing, excellent in use effect.
As preferred, the pole of increaseing is including fixed pipe, fixed pipe is vertical to be installed the base surface, fixed outer of tubes wall runs through and is provided with the guide way, the guide way along fixed pipe axial extension, fixed intraduct is installed through the bearing and is born the cover, bear the cover upper end and wear out fixed pipe, and install adjusting nut, adjusting nut installs elevating screw through the screw thread is inside, elevating screw upper end with it is connected to bear the box, the elevating screw bottom stretches into fixed intraduct, and installs the guide block, the guide block is followed the inside wearing out of guide way.
Preferably, the side surface of the sealing plate far away from the fixed end of the sealing plate is provided with a locking hole, the upper surface of the bearing box is provided with a positioning hole in a penetrating way, the positioning hole corresponds to the locking hole, the locking assembly comprises a fixing frame which is in an n-shaped structure, the port of the fixed frame is arranged on the upper surface of the bearing box, the upper surface of the fixed frame is provided with a guide hole in a penetrating way, the guide hole is coaxial with the positioning hole, the inside of the guide hole is slidably provided with a locking column, the upper end of the locking column penetrates out of the guide hole and is provided with a pulling plate, the bottom end of the locking column extends into the positioning hole and extends towards the interior of the bearing box, a pressing plate is arranged on the outer side of the locking column, the pressing plate is located inside the fixing frame, a locking spring is sleeved on the outer side of the locking column and located between the pressing plate and the top in the fixing frame.
Preferably, the locking post is in clearance fit with the locking hole.
Preferably, the pulling plate is provided with a pulling ring on the surface.
Preferably, the transmission assembly comprises two transmission belt wheels and two transmission belts, the two transmission belt wheels are respectively arranged on the outer sides of the winding shafts, and the outer sides of the two transmission belt wheels are in transmission connection with the transmission belts.
Preferably, the end of any one of the winding shafts penetrates out of the bearing box, and a manual handle is installed on the winding shaft.
Preferably, the surface of the carrying bag is provided with a taking and placing groove in a penetrating way.
Preferably, the bottom surface of the base is provided with a self-locking universal wheel.
Has the advantages that: 1. synchronous rotation of the two winding shafts is realized through a forward and reverse rotating motor and a transmission assembly, so that the winding shafts drive the conveying belt to move, automatic browsing of the music score is realized, and manual page turning is not needed;
2. the perspective groove on the surface of the sealing plate enables the music score line played currently to be exposed, so that a beginner can be prevented from mistakenly seeing the music score line, normal playing practice is guaranteed, and the using effect is good.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is an enlarged schematic view of the three-dimensional structure of the carrying box of the present invention;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2;
FIG. 4 is a right side cross-sectional view of the locking assembly of the present invention when locked;
fig. 5 is an enlarged schematic view of the structure of the height adjusting rod of the present invention.
The reference numerals are explained below:
1. a self-locking universal wheel; 2. a base; 3. a height adjusting rod; 301. a fixed tube; 302. a guide groove; 303. a guide block; 304. lifting a screw rod; 305. a bearing sleeve; 306. adjusting the nut; 4. a sealing plate; 401. a locking hole; 402. a perspective slot; 5. a transmission assembly; 501. a drive pulley; 502. a drive belt; 6. a conveyor belt; 7. a locking assembly; 701. pressing a plate; 702. a fixed mount; 703. a locking spring; 704. pulling a plate; 705. a pull ring; 706. a guide hole; 707. a locking post; 8. a carrying bag; 801. a taking and placing groove; 9. a manual handle; 10. a winding shaft; 11. a positive and negative rotation motor; 12. a carrying box; 1201. and (7) positioning the holes.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-5, the utility model provides a music stand for piano teaching, including base 2 and conveyer belt 6, base 2 surface mounting has heightening pole 3, heightening pole 3 upper end is installed and is born box 12, bear box 12 leading flank for the opening, bear box 12 inner wall bottom through the pivot install the rotatory closing plate 4 of vertical direction, be used for realizing bearing box 12 open-ended sealed and open, closing plate 4 surface runs through and is provided with horizontal perspective groove 402, preferably, perspective groove 402 can spill triplex row musical note, the musical note row that links up from top to bottom is convenient for the user to observe in this way, bear box 12 upper surface mounting and be used for locking fixed locking Assembly 7 to closing plate 4;
horizontal winding shafts 10 are rotatably arranged on two inner side walls of a bearing box 12, the two winding shafts 10 are symmetrically distributed according to a height central line of the bearing box 12, a transmission assembly 5 used for driving the two winding shafts 10 to synchronously rotate is arranged between the two winding shafts 10, a forward and reverse rotating motor 11 is arranged on the outer side of the bearing box 12, the forward and reverse rotating motor 11 is connected with any winding shaft 10, preferably, a storage battery used for supplying power to the forward and reverse rotating motor 11 and a switch group used for controlling the forward and reverse rotating motor 11 are arranged on the back side of the bearing box 12, and the switch group, the storage battery and the forward and reverse rotating motor 11 form a circuit loop; the winding rolling is in two rolling axle 10 outsides respectively at the both ends of conveyer belt 6, and is preferred, and the both ends of conveyer belt 6 are riveted respectively in two rolling axle 10 outsides, sets up like this and can prevent that conveyer belt 6 and rolling axle 10 from breaking away from, and conveyer belt 6 surface is provided with the bearing bag 8 that is used for placing the musical instrument table, and bearing bag 8 is provided with a plurality ofly, and along the length direction evenly distributed of conveyer belt 6.
As an alternative embodiment, the height-adjusting rod 3 includes a fixed tube 301, the fixed tube 301 is vertically installed on the surface of the base 2, a guide groove 302 is penetratingly disposed on the outer wall of the fixed tube 301, the guide groove 302 extends along the axial direction of the fixed tube 301, a bearing sleeve 305 is installed inside the fixed tube 301 through a bearing, the upper end of the bearing sleeve 305 penetrates through the fixed tube 301 and is installed with an adjusting nut 306, a lifting screw 304 is installed inside the adjusting nut 306 through a thread, the upper end of the lifting screw 304 is connected with the bearing box 12, the bottom end of the lifting screw 304 extends into the fixed tube 301 and is installed with a guide block 303, the guide block 303 penetrates out from the inside of the guide groove 302, so that the adjusting nut 306 is screwed, the lifting screw 304 is limited and guided by the guide block 303 and the guide groove 302, the lifting screw 304 is lifted inside the fixed tube 301 by thread transmission, the lifting screw, the height adjustment of the carrying case 12 is achieved.
The side of the sealing plate 4 far away from the fixed end is provided with a locking hole 401, the upper surface of the bearing box 12 is provided with a positioning hole 1201 in a penetrating way, the positioning hole 1201 corresponds to the locking hole 401, the locking component 7 comprises a fixing frame 702, the fixing frame 702 is of an n-shaped structure, the port of the fixing frame 702 is arranged on the upper surface of the bearing box 12, the upper surface of the fixing frame 702 is provided with a guide hole 706 in a penetrating way, the guide hole 706 is coaxial with the positioning hole 1201, a locking column 707 is slidably arranged in the guide hole 706, the upper end of the locking column 707 penetrates out of the guide hole 706 and is provided with a pulling plate 704, the bottom end of the locking column 707 extends into the positioning hole 1201 and extends towards the inside of the bearing box 12, the outer side of the locking column 707 is provided with a pressing plate 701, the pressing plate 701 is positioned in the fixing frame 702, overcoming the elasticity of the locking spring 703, pulling the locking column 707 through the pulling plate 704 to separate the bottom end of the locking column 707 from the locking hole 401, thereby releasing the locking fixation of the sealing plate 4; when the sealing plate 4 needs to be locked and fastened, the above process is repeated, the sealing plate 4 is screwed into the bearing box 12, the locking hole 401 is coaxial with the positioning hole 1201, the pulling plate 704 is slowly loosened, the pressing plate 701 is pressed down by the elasticity of the locking spring 703, the pressing plate 701 drives the locking column 707 to move, the bottom end of the locking column 707 is inserted into the locking hole 401, and the sealing plate 4 is locked and fixed at the opening of the bearing box 12.
The locking columns 707 are in clearance fit with the locking holes 401, so that the locking columns 707 can be fully contacted with the locking holes 401, and the locking and fixing stability of the sealing plate 4 is guaranteed.
The pull plate 704 is provided with a pull ring 705 on the surface thereof, so that the pull plate 704 can be pulled by the pull ring 705.
Drive assembly 5 includes driving pulley 501 and driving belt 502, and driving pulley 501 is total two and install respectively in two rolling axle 10 outsides, and two driving pulley 501 outside transmissions are connected with driving belt 502, sets up like this and carries out the belt drive through two driving pulley 501 and driving belt 502 to supplementary synchronous revolution who realizes two rolling axles 10.
Preferably, driving pulley 501 is a synchronous pulley, and driving belt 502 is a synchronous belt, so that the driving accuracy of driving pulley 501 and driving belt 502 can be ensured.
The end of any one winding shaft 10 penetrates out of the bearing box 12 and is provided with the manual handle 9, and the winding shaft 10 can be manually driven to rotate through the manual handle 9, so that the conveying belt 6 can be moved, and music scores can be conveniently put into the bearing bag 8 or the music scores in the bearing bag 8 can be conveniently taken out.
The carrying bag 8 is provided with a taking and placing groove 801 in a penetrating manner, so that the music score can be conveniently put into the carrying bag 8 or taken out from the carrying bag 8 through the taking and placing groove 801.
Auto-lock universal wheel 1 is installed to 2 bottom surfaces of base, sets up like this, can realize the removal and the fixing of device through auto-lock universal wheel 1, helps improving the use flexibility ratio of device.
By adopting the structure, when the device is used, the length of the height adjusting rod 3 is adjusted, so that the height of the bearing box 12 is adjusted, the use requirements of users with different heights can be met, and the application range is wide; the locking and fixing of the sealing plate 4 by the locking component 7 are released, the sealing plate 4 is rotated to realize the opening of the bearing box 12, the music sheet for playing is respectively placed in the bearing bags 8, after the music sheet is placed, the sealing plate 4 is screwed into the bearing box 12, and the sealing plate 4 is locked and fixed at the opening end of the bearing box 12 through the locking component 7; the forward and reverse rotation motor 11 is started, the forward and reverse rotation motor 11 drives the rolling shafts 10 to rotate, the two rolling shafts 10 are synchronously rotated through the transmission assembly 5, the rolling shafts 10 drive the conveying belt 6 to move, the conveying belt 6 drives the bearing bag 8 to move, automatic browsing of music scores is realized, and a user can watch the music scores through the perspective groove 402; the device can realize automatic browsing of music scores, does not need manual page turning of a user, reduces the operation difficulty of the user, and is convenient for the user to concentrate on playing practice; through the perspective groove 402 on the surface of the sealing plate 4, the music score played at present can be exposed, the user can be prevented from seeing the music score in a wrong way, the normal playing practice is ensured, and the using effect is good.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The utility model provides a piano teaching is with music stand which characterized in that: the device comprises a base (2) and a conveying belt (6), wherein a height-adjusting rod (3) is installed on the surface of the base (2), a bearing box (12) is installed at the upper end of the height-adjusting rod (3), the front side surface of the bearing box (12) is an opening, a sealing plate (4) which rotates in the vertical direction is installed at the bottom of the inner wall of the bearing box (12) through a rotating shaft and used for sealing and opening the opening of the bearing box (12), a horizontal perspective groove (402) penetrates through the surface of the sealing plate (4), and a locking assembly (7) used for locking and fixing the sealing plate (4) is installed on the upper surface of the bearing box (12);
horizontal winding shafts (10) are rotatably mounted on two inner side walls of the bearing box (12), the two winding shafts (10) are symmetrically distributed according to the height central line of the bearing box (12), a transmission assembly (5) for driving the two winding shafts (10) to synchronously rotate is arranged between the two winding shafts (10), a forward and reverse rotating motor (11) is mounted on the outer side of the bearing box (12), and the forward and reverse rotating motor (11) is connected with any one winding shaft (10); the winding rolling is in two respectively at the both ends of conveyer belt (6) the rolling axle (10) outside, conveyer belt (6) surface is provided with and is used for placing the bearing bag (8) of musical instrument table, bearing bag (8) are provided with a plurality ofly, and along the length direction evenly distributed of conveyer belt (6).
2. The music stand for piano teaching of claim 1, wherein: heightening pole (3) are including fixed pipe (301), fixed pipe (301) are vertical to be installed base (2) surface, fixed pipe (301) outer wall runs through and is provided with guide way (302), guide way (302) along fixed pipe (301) axial extension, fixed pipe (301) are inside to be installed through the bearing and to bear cover (305), bear cover (305) upper end and wear out fixed pipe (301), and install adjusting nut (306), adjusting nut (306) are inside to install lift lead screw (304) through the screw thread, lift lead screw (304) upper end with it is connected to bear box (12), lift lead screw (304) bottom is stretched into fixed pipe (301) are inside, and install guide block (303), guide block (303) are followed guide way (302) are inside to be worn out.
3. The music stand for piano teaching of claim 1, wherein: the side face, far away from the fixed end, of the sealing plate (4) is provided with a locking hole (401), the upper surface of the bearing box (12) is provided with a positioning hole (1201) in a penetrating mode, the positioning hole (1201) corresponds to the locking hole (401), the locking assembly (7) comprises a fixing frame (702), the fixing frame (702) is of an n-shaped structure, a port of the fixing frame (702) is installed on the upper surface of the bearing box (12), the upper surface of the fixing frame (702) is provided with a guide hole (706) in a penetrating mode, the guide hole (706) is coaxial with the positioning hole (1201), a locking column (707) is installed inside the guide hole (706) in a sliding mode, the upper end of the locking column (707) penetrates out of the guide hole (706) and is provided with a pulling plate (704), and the bottom end of the locking column (707) extends into the positioning hole (1201) and extends towards the, the outer side of the locking column (707) is provided with a pressing plate (701), the pressing plate (701) is located inside the fixing frame (702), the outer side of the locking column (707) is sleeved with a locking spring (703), and the locking spring (703) is located between the pressing plate (701) and the inner top of the fixing frame (702).
4. The music stand for piano teaching of claim 3, wherein: the locking column (707) is in clearance fit with the locking hole (401).
5. The music stand for piano teaching of claim 3, wherein: the pull plate (704) is provided with a pull ring (705) on the surface.
6. The music stand for piano teaching of claim 1, wherein: drive assembly (5) include driving pulley (501) and driving belt (502), driving pulley (501) are total two and install respectively two wind-up shaft (10) outside, two driving pulley (501) outside transmission is connected with driving belt (502).
7. The music stand for piano teaching of claim 1, wherein: the end part of any one of the winding shafts (10) penetrates out of the bearing box (12) and is provided with a manual handle (9).
8. The music stand for piano teaching of claim 1, wherein: the surface of the bearing bag (8) is provided with a taking and placing groove (801) in a penetrating way.
9. The music stand for piano teaching of claim 1, wherein: the bottom surface of the base (2) is provided with a self-locking universal wheel (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920759923.3U CN210169337U (en) | 2019-05-24 | 2019-05-24 | Music stand for piano teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920759923.3U CN210169337U (en) | 2019-05-24 | 2019-05-24 | Music stand for piano teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210169337U true CN210169337U (en) | 2020-03-24 |
Family
ID=69834754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920759923.3U Expired - Fee Related CN210169337U (en) | 2019-05-24 | 2019-05-24 | Music stand for piano teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210169337U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111543803A (en) * | 2020-05-16 | 2020-08-18 | 杨立强 | Garden design project construction drawing display device |
| CN112269000A (en) * | 2020-10-20 | 2021-01-26 | 山东蓝帆化工有限公司 | Sewage total nitrogen analysis equipment and use method thereof |
-
2019
- 2019-05-24 CN CN201920759923.3U patent/CN210169337U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111543803A (en) * | 2020-05-16 | 2020-08-18 | 杨立强 | Garden design project construction drawing display device |
| CN112269000A (en) * | 2020-10-20 | 2021-01-26 | 山东蓝帆化工有限公司 | Sewage total nitrogen analysis equipment and use method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210169337U (en) | Music stand for piano teaching | |
| CN110120162B (en) | Korean teaching shows teaching aid that uses | |
| CN112396927A (en) | Economics is with having economic change curve display device who rotates show structure | |
| CN108538148A (en) | A kind of Ideological and Political Theoretical Course intelligence interactive teaching displaying device | |
| CN110701445A (en) | VR projection arrangement suitable for education and training | |
| CN111497499A (en) | Be applied to mathematical education's multi-functional teaching aid pole | |
| CN211000641U (en) | High school geography teaching auxiliary device | |
| CN215111856U (en) | Auxiliary demonstration device | |
| CN214098858U (en) | All-round display device of mathematics three-dimensional model | |
| CN215068658U (en) | Intelligent teaching auxiliary assembly | |
| CN210670523U (en) | Stage scene rendering sound production equipment | |
| CN213987945U (en) | University student's ideological and political education show board | |
| CN220396957U (en) | High interesting word filling device for primary school Chinese | |
| CN220962741U (en) | Display device with adjusting structure | |
| CN213555195U (en) | Leg pressing device for training of shape courses of colleges and universities | |
| CN212061642U (en) | Automobile engine teaching equipment | |
| CN214175398U (en) | Article reading speed training equipment for Chinese | |
| CN219629068U (en) | Music score display device with rolling structure | |
| CN212256651U (en) | Presentation device of angularly adjustable for preschool education | |
| CN211124411U (en) | Education training system | |
| CN216928010U (en) | A multi-functional intelligent piano device for music treatment and music education | |
| CN220109360U (en) | Building block spliced sand table | |
| CN109847305A (en) | A kind of table tennis practice AID | |
| CN213877144U (en) | Rack is used in music teaching | |
| CN109118897B (en) | Memory exercise device for English teaching |
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: 20200324 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |