CN213720375U - Storage device is used in english teaching - Google Patents
Storage device is used in english teaching Download PDFInfo
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- CN213720375U CN213720375U CN202022411962.XU CN202022411962U CN213720375U CN 213720375 U CN213720375 U CN 213720375U CN 202022411962 U CN202022411962 U CN 202022411962U CN 213720375 U CN213720375 U CN 213720375U
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Abstract
The utility model discloses an english teaching is with storage device, including top storage device, bottom storage device, lighting device, operation control box and accomodate empty box. The utility model belongs to the technical field of teaching material storage facility, specifically indicate an english teaching is with storage device, be equipped with top storage device and can accomodate large-scale paper material to classify to the important degree of material according to the height difference that goes up and down, small-size article can be collected to bottom storage device, avoids losing of small-size material, and lighting device confirms the utility model discloses whether the error on the position appears in the device, whether verifying attachment produces the damage, the utility model discloses effectively solved current teaching material storage device low in service efficiency on the existing market, and self structure is complicated, maintains comparatively inconvenient problem.
Description
Technical Field
The utility model belongs to the technical field of teaching material storage device, specifically indicate an english teaching is with storage device.
Background
In english teaching process, the teaching aid that needs is except the textbook, and the teaching aid in kind such as english CD is also necessary, and existing conditions are very much just directly press from both sides the CD in the book, drop when carrying very easily like this, and then damage, and data can't be resumeed during the serious, and then cause the teaching accident. In addition english teacher still needs teaching aids such as microphone, need all bring together all teaching aids at the teaching in-process, but some teaching aids are very scattered, and difficult arrangement, collection and deposit consequently have and lose or forget the problem of carrying, in case forget and take a certain teaching aid, can influence normal teaching work.
SUMMERY OF THE UTILITY MODEL
To the above situation, for overcoming prior art's defect, the utility model provides an english teaching is with storage device is equipped with top storage device and can accomodate large-scale paper material to classify to the important degree of material according to the difference in height of going up and down, small-size article can be collected to bottom storage device, avoids losing of small-size material, and lighting device confirms the utility model discloses whether error in the position appears in the device, whether verifying attachment produces the damage, the utility model discloses effectively solved current teaching material storage device low in utilization efficiency on the existing market, and self structure is complicated, maintains comparatively inconvenient problem.
The utility model adopts the following technical scheme: the utility model relates to an english teaching is with storage device, including top storage device, bottom storage device, lighting device, operation control box and accomodate empty box, operation control box locates on the outer wall of accomodating empty box, bottom storage device locates on the diapire of accomodating empty box, top storage device locates the top of bottom storage device, lighting device locates on the top storage device; the upper containing device comprises an upper baffle, an upper rotating shaft, a side wall clamping groove, a rear end side edge material placing box, a rear end eccentric center placing box, a middle placing box, a front end eccentric center placing box, a front end side edge material placing box, a rear end side edge clamping block, a rear end eccentric center clamping groove, a rear end eccentric center clamping block, a center clamping groove, a front end eccentric center clamping block, a front end eccentric center clamping groove, a front end side edge clamping block, an electric cylinder lifting groove and a bottom electric cylinder, wherein the side wall clamping groove is formed in the side wall of the operation control box, the upper rotating shaft is clamped and rotatably arranged on the side wall clamping groove, the upper baffle is arranged on the upper rotating shaft, the rear end side edge material placing box is arranged below the upper baffle, the rear end eccentric center placing box is connected with the rear end side edge material placing box, the middle placing box is connected with the rear end eccentric center placing box, and the front end eccentric center placing box is connected with the middle placing box, the front end side edge material placing box is connected with the front end side eccentric placing box, the rear end side edge clamping block is arranged on the side wall of the rear end side edge material placing box, the rear end eccentric clamping groove is arranged on the rear end eccentric placing box, the rear end side edge clamping block is clamped and slidably arranged on the rear end eccentric clamping groove, the rear end eccentric clamping block is arranged on the side wall of the rear end eccentric placing box, the central clamping groove is arranged on the side wall of the middle placing box, the rear end eccentric clamping block is clamped and slidably arranged on the central clamping groove, the front end eccentric clamping block is arranged on the front end eccentric placing box, the front end eccentric clamping groove is arranged on the front end eccentric placing box, the front end side edge clamping block is arranged on the front end side edge material placing box, the front end side edge clamping block is clamped and slidably arranged on the front end eccentric clamping groove, and the electric cylinder lifting groove is arranged on the bottom wall of the operation control box, the bottom end electric cylinder is arranged on the electric cylinder lifting groove.
Further, the bottom containing device comprises a bottom containing groove, a bottom opening, a bottom outer support, a bottom rotating shaft, a bottom outer baffle, a bottom containing box, a lead screw rotating motor, a small lead screw, a clamping nut, a lead screw front end limiting plate, a lead screw rear end limiting plate and a linear bearing, wherein the bottom containing groove is arranged on the bottom wall of the operation control box, the bottom opening is arranged on the outer wall of the operation control box, the bottom containing groove is connected with the bottom opening, the bottom outer support is arranged on the outer wall of the operation control box, the bottom rotating shaft is clamped and rotatably arranged on the bottom outer support, the bottom outer baffle is arranged on the bottom rotating shaft, the lead screw rotating motor is arranged on the bottom containing groove, the lead screw front end limiting plate is arranged on the bottom containing groove, the lead screw rear end limiting plate is arranged on the bottom containing groove, one end of the small lead screw is clamped and rotatably arranged on the lead screw front end limiting plate, the other end block of small-size lead screw rotates and locates on the lead screw rear end limiting plate, the lead screw rotates the motor and links to each other with small-size lead screw, block nut block slides and locates on the small-size lead screw, linear bearing runs through block nut, linear bearing's one end is located on the lead screw front end limiting plate, linear bearing's the other end is located on the lead screw rear end limiting plate, block nut block slides and locates on the linear bearing, the bottom receiver is located on the block nut.
Furthermore, the lighting device comprises an internal power supply battery, a rear end side conducting wire, a middle conducting wire, a front end side conducting wire and a signal indicator lamp, wherein the internal power supply battery is arranged on the side wall of one side of the operation control box, the signal indicator lamp is arranged on the side wall of the other side of the operation control box, the rear end side conducting wire is arranged on the bottom wall of the rear end side material placing box, the middle conducting wire is arranged on the bottom wall of the middle placing box, the front end side conducting wire is arranged on the bottom wall of the front end side material placing box, the internal power supply battery is in contact connection with the rear end side conducting wire, and the rear end side conducting wire is in contact connection with the rear end side conducting wire, the middle conducting wire is in contact connection with the rear end eccentric conducting wire, the front end eccentric conducting wire is in contact connection with the middle conducting wire, the front end side conducting wire is in contact connection with the front end eccentric conducting wire, and the signal indicator lamp is in contact connection with the front end side conducting wire.
Furthermore, the operation control box is respectively electrically connected with the bottom end electric cylinder, the lead screw rotating motor and the internal power supply battery, the internal power supply battery is electrically connected with the rear end side electric lead, the rear end eccentric electric lead is electrically connected with the rear end side electric lead, the middle electric lead is electrically connected with the rear end eccentric electric lead, the front end eccentric electric lead is electrically connected with the middle electric lead, the front end side electric lead is electrically connected with the front end eccentric electric lead, and the signal indicator lamp is electrically connected with the front end side electric lead.
Further, the operation control box is made of wood.
Further, the output end of the bottom end electric cylinder is connected with the bottom wall of the middle placing box.
Furthermore, two groups of central clamping grooves are arranged.
Adopt above-mentioned structure the utility model discloses the beneficial effect who gains as follows: this scheme is storage device for english teaching is equipped with top storage device and can accomodate large-scale paper material to classify to the important degree of material according to the difference in height that goes up and down, small-size article can be collected to bottom storage device, avoids losing of small-size material, and lighting device confirms the utility model discloses whether the error on the position appears in the device, whether verifying attachment produces the damage, the utility model discloses effectively solved current teaching material storage device availability factor in the existing market low, and self structure is complicated, maintains comparatively inconvenient problem.
Drawings
Fig. 1 is a front sectional view of an english teaching storage device of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1.
Wherein, 1, an upper receiving device, 2, a bottom receiving device, 3, a lighting device, 4, an operation control box, 5, a receiving empty box, 6, an upper baffle, 7, an upper rotating shaft, 8, a side wall clamping groove, 9, a rear end side material placing box, 10, a rear end side eccentric placing box, 11, a middle placing box, 12, a front end eccentric placing box, 13, a front end side material placing box, 14, a rear end side clamping block, 15, a rear end eccentric clamping groove, 16, a rear end eccentric clamping block, 17, a center clamping groove, 18, a front end eccentric clamping block, 19, a front end eccentric clamping groove, 20, a front end side clamping block, 21, an electric cylinder lifting groove, 22, a bottom end electric cylinder, 23, a bottom layer receiving groove, 24, a bottom layer opening, 25, a bottom layer outer support, 26, a bottom wall rotating shaft, 27, a bottom layer outer baffle, 28, a bottom receiving box, 29, a lead screw rotating motor, 30. the small lead screw comprises a small lead screw body 31, a clamping nut 32, a lead screw front end limiting plate 33, a lead screw rear end limiting plate 34, a linear bearing 35, an internal power supply battery 36, a rear end side conducting wire 37, a rear end eccentric conducting wire 38, a middle conducting wire 39, a front end eccentric conducting wire 40, a front end side conducting wire 41 and a signal indicating lamp.
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-2, the storage device for english teaching of the present invention comprises an upper storage device 1, a bottom storage device 2, a lighting device 3, an operation control box 4 and a storage empty box 5, wherein the operation control box 4 is arranged on the outer wall of the storage empty box 5, the bottom storage device 2 is arranged on the bottom wall of the storage empty box 5, the upper storage device 1 is arranged above the bottom storage device 2, and the lighting device 3 is arranged on the upper storage device 1; the upper storage device 1 includes an upper baffle 6, an upper rotating shaft 7, a side wall clamping groove 8, a rear end side edge material storage box 9, a rear end eccentric center storage box 10, a middle storage box 11, a front end eccentric center storage box 12, a front end side edge material storage box 13, a rear end side edge clamping block 14, a rear end eccentric center clamping groove 15, a rear end eccentric center clamping block 16, a center clamping groove 17, a front end eccentric center clamping block 18, a front end eccentric center clamping groove 19, a front end side edge clamping block 20, an electric cylinder lifting groove 21 and a bottom electric cylinder 22, the side wall clamping groove 8 is arranged on the side wall of the operation control box 4, the upper rotating shaft 7 is clamped and rotatably arranged on the side wall clamping groove 8, the upper baffle 6 is arranged on the upper rotating shaft 7, the rear end side edge material storage box 9 is arranged below the upper baffle 6, the rear end eccentric center storage box 10 is connected with the rear end side edge material storage box 9, the middle placing box 11 is connected with the rear end eccentric placing box 10, the front end eccentric placing box 12 is connected with the middle placing box 11, the front end side edge material placing box 13 is connected with the front end eccentric placing box 12, the rear end side edge engaging block 14 is arranged on the side wall of the rear end side edge material placing box 9, the rear end eccentric engaging groove 15 is arranged on the rear end eccentric placing box 10, the rear end side edge engaging block 14 is slidably engaged with the rear end eccentric engaging groove 15, the rear end eccentric engaging block 16 is arranged on the side wall of the rear end eccentric placing box 10, the central engaging groove 17 is arranged on the side wall of the middle placing box 11, the rear end eccentric engaging block 16 is slidably engaged with the central engaging groove 17, the front end eccentric engaging block 18 is arranged on the front end eccentric placing box 12, and the front end eccentric engaging groove 19 is arranged on the front end eccentric placing box 12, the front end side clamping block 20 is arranged on the front end side material placing box 13, the front end side clamping block 20 is arranged on the front end eccentric clamping groove 19 in a clamping and sliding mode, the electric cylinder lifting groove 21 is arranged on the bottom wall of the operation control box 4, and the bottom electric cylinder 22 is arranged on the electric cylinder lifting groove 21.
The bottom storage device 2 comprises a bottom storage groove 23, a bottom opening 24, a bottom outer support 25, a bottom rotary shaft 26, a bottom outer baffle 27, a bottom storage box 28, a lead screw rotating motor 29, a small lead screw 30, a clamping nut 31, a lead screw front end limiting plate 32, a lead screw rear end limiting plate 33 and a linear bearing 34, wherein the bottom storage groove 23 is arranged on the bottom wall of the operation control box 4, the bottom opening 24 is arranged on the outer wall of the operation control box 4, the bottom storage groove 23 is connected with the bottom opening 24, the bottom outer support 25 is arranged on the outer wall of the operation control box 4, the bottom rotary shaft 26 is clamped and rotated on the bottom outer support 25, the bottom outer baffle 27 is arranged on the bottom rotary shaft 26, the lead screw rotating motor 29 is arranged on the bottom storage groove 23, the lead screw front end limiting plate 32 is arranged on the bottom storage groove 23, and the lead screw rear end limiting plate 33 is arranged on the bottom storage groove 23, the one end block of small-size lead screw 30 is rotated and is located on lead screw front end limiting plate 32, the other end block of small-size lead screw 30 is rotated and is located on lead screw rear end limiting plate 33, lead screw rotation motor 29 links to each other with small-size lead screw 30, block nut 31 block is slided and is located on small-size lead screw 30, linear bearing 34 runs through block nut 31, the one end of linear bearing 34 is located on lead screw front end limiting plate 32, the other end of linear bearing 34 is located on lead screw rear end limiting plate 33, block nut 31 block is slided and is located on linear bearing 34, bottom receiver 28 is located on block nut 31.
The lighting device 3 comprises an internal power supply battery 35, a rear end side conductive wire 36, a rear end side conductive wire 37, a middle conductive wire 38, a front end side conductive wire 39, a front end side conductive wire 40 and a signal indicator lamp 41, wherein the internal power supply battery 35 is arranged on the side wall of one side of the operation control box 4, the signal indicator lamp 41 is arranged on the side wall of the other side of the operation control box 4, the rear end side conductive wire 36 is arranged on the bottom wall of the rear end side material placing box 9, the rear end side conductive wire 37 is arranged on the bottom wall of the rear end side material placing box 10, the middle conductive wire 38 is arranged on the bottom wall of the middle placing box 11, the front end side conductive wire 39 is arranged on the bottom wall of the front end side material placing box 12, the front end side conductive wire 40 is arranged on the bottom wall of the front end side material placing box 13, and the internal power supply battery 35 is in contact connection with the rear end side conductive wire 36, the rear end eccentric conductive wire 37 is connected with the rear end side conductive wire 36 in a contact manner, the middle conductive wire 38 is connected with the rear end eccentric conductive wire 37 in a contact manner, the front end eccentric conductive wire 39 is connected with the middle conductive wire 38 in a contact manner, the front end side conductive wire 40 is connected with the front end eccentric conductive wire 39 in a contact manner, and the signal indicator lamp 41 is connected with the front end side conductive wire 40 in a contact manner.
The operation control box 4 is respectively electrically connected with the bottom end electric cylinder 22, the lead screw rotating motor 29 and the internal power supply battery 35, the internal power supply battery 35 is electrically connected with the rear end side electric lead 36, the rear end eccentric electric lead 37 is electrically connected with the rear end side electric lead 36, the middle electric lead 38 is electrically connected with the rear end eccentric electric lead 37, the front end eccentric electric lead 39 is electrically connected with the middle electric lead 38, the front end side electric lead 40 is electrically connected with the front end eccentric electric lead 39, and the signal indicator lamp 41 is electrically connected with the front end side electric lead 40.
The operation control box 4 is made of wood.
The output end of the bottom electric cylinder 22 is connected with the bottom wall of the middle placing box 11.
Two groups of central clamping grooves 17 are arranged.
In use, the user controls the operation control box 4 to extend the bottom end electric cylinder 22, raise the middle storage case 11 upward, slide the rear end off-center engaging block 16 and the front end off-center engaging block 18 along the center engaging groove 17, raise the rear end off-center storage case 10 and the front end off-center storage case 12 upward when the rear end off-center engaging block 16 and the front end off-center engaging block 18 reach the end of the center engaging groove 17, slide the rear end side edge engaging block 14 along the rear end off-center engaging groove 15, slide the front end side edge engaging block 20 along the front end off-center engaging groove 19, move the rear end side edge engaging block 14 upward when the rear end side edge engaging block 14 contacts the bottom end of the rear end off-center engaging groove 15, move the front end side edge engaging block 20 upward when the front end side edge engaging block 20 contacts the bottom end of the front end off-center engaging groove 19, and move the rear end side edge wire 36 upward during this period, Rear end off-center conductor wire 37, middle conductor wire 38, contact disconnection between front end off-center conductor wire 39 and the lateral edge conductor wire 40 of front end, internal power supply battery 35 can't supply power for signal indicator 41, signal indicator 41 stop work, when the user need put some little materials, user control lead screw rotates motor 29 work, small-size lead screw 30 rotates, block nut 31 moves along linear bearing 34's direction, bottom receiver 28 removes to bottom opening 24 direction, diapire external baffle 27 is backed down by bottom receiver 28, the user puts into after the small-size material in bottom receiver 28, the reversal of small-size lead screw 30 of control, bottom receiver 28 gets back to in the bottom holds the groove 23, above just, the utility model discloses holistic work flow, repeat this step when using next time can.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.
Claims (7)
1. The utility model provides an english teaching storage device, its characterized in that: the automatic storage device comprises an upper storage device, a bottom storage device, a lighting device, an operation control box and a storage empty box, wherein the operation control box is arranged on the outer wall of the storage empty box; the upper containing device comprises an upper baffle, an upper rotating shaft, a side wall clamping groove, a rear end side edge material placing box, a rear end eccentric center placing box, a middle placing box, a front end eccentric center placing box, a front end side edge material placing box, a rear end side edge clamping block, a rear end eccentric center clamping groove, a rear end eccentric center clamping block, a center clamping groove, a front end eccentric center clamping block, a front end eccentric center clamping groove, a front end side edge clamping block, an electric cylinder lifting groove and a bottom electric cylinder, wherein the side wall clamping groove is formed in the side wall of the operation control box, the upper rotating shaft is clamped and rotatably arranged on the side wall clamping groove, the upper baffle is arranged on the upper rotating shaft, the rear end side edge material placing box is arranged below the upper baffle, the rear end eccentric center placing box is connected with the rear end side edge material placing box, the middle placing box is connected with the rear end eccentric center placing box, and the front end eccentric center placing box is connected with the middle placing box, the front end side edge material placing box is connected with the front end side eccentric placing box, the rear end side edge clamping block is arranged on the side wall of the rear end side edge material placing box, the rear end eccentric clamping groove is arranged on the rear end eccentric placing box, the rear end side edge clamping block is clamped and slidably arranged on the rear end eccentric clamping groove, the rear end eccentric clamping block is arranged on the side wall of the rear end eccentric placing box, the central clamping groove is arranged on the side wall of the middle placing box, the rear end eccentric clamping block is clamped and slidably arranged on the central clamping groove, the front end eccentric clamping block is arranged on the front end eccentric placing box, the front end eccentric clamping groove is arranged on the front end eccentric placing box, the front end side edge clamping block is arranged on the front end side edge material placing box, the front end side edge clamping block is clamped and slidably arranged on the front end eccentric clamping groove, and the electric cylinder lifting groove is arranged on the bottom wall of the operation control box, the bottom end electric cylinder is arranged on the electric cylinder lifting groove.
2. The storage device is used in english teaching of claim 1, its characterized in that: the bottom storage device comprises a bottom storage groove, a bottom opening, a bottom wall external support, a bottom wall rotating shaft, a bottom wall external baffle, a bottom storage box, a lead screw rotating motor, a small lead screw, a clamping nut, a lead screw front end limiting plate, a lead screw rear end limiting plate and a linear bearing, wherein the bottom storage groove is arranged on the bottom wall of the operation control box, the bottom opening is arranged on the outer wall of the operation control box, the bottom storage groove is connected with the bottom opening, the bottom wall external support is arranged on the outer wall of the operation control box, the bottom wall rotating shaft is clamped and rotatably arranged on the bottom wall external support, the bottom wall external baffle is arranged on the bottom wall rotating shaft, the lead screw rotating motor is arranged on the bottom storage groove, the lead screw front end limiting plate is arranged on the bottom storage groove, the lead screw rear end limiting plate is arranged on the bottom storage groove, and one end of the small lead screw is clamped and rotatably arranged on the lead screw front end limiting plate, the other end block of small-size lead screw rotates and locates on the lead screw rear end limiting plate, the lead screw rotates the motor and links to each other with small-size lead screw, block nut block slides and locates on the small-size lead screw, linear bearing runs through block nut, linear bearing's one end is located on the lead screw front end limiting plate, linear bearing's the other end is located on the lead screw rear end limiting plate, block nut block slides and locates on the linear bearing, the bottom receiver is located on the block nut.
3. The storage device is used in english teaching of claim 2, its characterized in that: the lighting device comprises an internal power supply battery, a rear end side conductive wire, a middle conductive wire, a front end side conductive wire and a signal indicator lamp, wherein the internal power supply battery is arranged on the side wall of one side of the operation control box, the signal indicator lamp is arranged on the side wall of the other side of the operation control box, the rear end side conductive wire is arranged on the bottom wall of the rear end side material placing box, the middle conductive wire is arranged on the bottom wall of the middle placing box, the front end side conductive wire is arranged on the bottom wall of the front end side material placing box, the internal power supply battery is in contact connection with the rear end side conductive wire, and the rear end side conductive wire is in contact connection with the rear end side conductive wire, the middle conducting wire is in contact connection with the rear end eccentric conducting wire, the front end eccentric conducting wire is in contact connection with the middle conducting wire, the front end side conducting wire is in contact connection with the front end eccentric conducting wire, and the signal indicator lamp is in contact connection with the front end side conducting wire.
4. The storage device is used in english teaching of claim 3, its characterized in that: the operation control box is respectively electrically connected with the bottom end electric cylinder, the lead screw rotating motor and the internal power supply battery, the internal power supply battery is electrically connected with the side electric lead of the rear end, the side electric lead of the rear end is electrically connected with the side electric lead of the rear end, the middle electric lead is electrically connected with the side electric lead of the rear end, the side electric lead of the front end is electrically connected with the middle electric lead, the side electric lead of the front end is electrically connected with the side electric lead of the front end, and the signal indicator lamp is electrically connected with the side electric lead of the front end.
5. The storage device is used in english teaching of claim 4, characterized in that: the operation control box is made of wood.
6. The storage device is used in english teaching of claim 5, characterized in that: the output end of the bottom electric cylinder is connected with the bottom wall of the middle placing box.
7. The storage device is used in english teaching of claim 6, characterized in that: two groups of central clamping grooves are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022411962.XU CN213720375U (en) | 2020-10-27 | 2020-10-27 | Storage device is used in english teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022411962.XU CN213720375U (en) | 2020-10-27 | 2020-10-27 | Storage device is used in english teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213720375U true CN213720375U (en) | 2021-07-20 |
Family
ID=76854434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022411962.XU Active CN213720375U (en) | 2020-10-27 | 2020-10-27 | Storage device is used in english teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213720375U (en) |
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2020
- 2020-10-27 CN CN202022411962.XU patent/CN213720375U/en active Active
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