CN112497957A - Chalk storage device for intelligent blackboard - Google Patents
Chalk storage device for intelligent blackboard Download PDFInfo
- Publication number
- CN112497957A CN112497957A CN202011438789.0A CN202011438789A CN112497957A CN 112497957 A CN112497957 A CN 112497957A CN 202011438789 A CN202011438789 A CN 202011438789A CN 112497957 A CN112497957 A CN 112497957A
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- CN
- China
- Prior art keywords
- chalk
- intelligent blackboard
- pressing rod
- hopper
- chute
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K31/00—Writing implement receptacles functioning as, or combined with, writing implements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a chalk containing device for a smart blackboard, and relates to the technical field of smart blackboards. The intelligent blackboard comprises an intelligent blackboard body, a containing hopper and a chalk taking device; the intelligent blackboard body is provided with a chalk taking device and a containing hopper; a discharge chute is arranged at the bottom of the rectangular pipe; the chalk taking device comprises a discharge pipe, a pressing rod and a material pushing block; the upper part of the discharge pipe is provided with a feed chute; the feed chute is communicated with the discharge chute of the receiving hopper; a pressing plate and a material pushing block are respectively fixed at two ends of the pressing rod; the side surface of the discharge pipe is provided with a limiting sliding chute; the inner side of the limiting sliding chute is in sliding fit with a pressing rod; the peripheral side surface of the pressing rod is matched with a spring. The invention achieves the function effect of taking the chalk immediately after use and the advantage of simple use through the functions of the storage hopper and the chalk taking device, and the invention can avoid occupying the desktop space required by teachers by storing the chalk in the storage hopper at the back of the intelligent blackboard, and has the advantages that the desktop is easier to clean and more orderly to place.
Description
Technical Field
The invention belongs to the technical field of intelligent blackboards, and particularly relates to a chalk containing device for an intelligent blackboard.
Background
In the teaching process, the using amount of chalk is more one of the chalk. And for the chalk with larger consumption, the chalk needs to be placed on a teacher's desk. Especially, in the period of heavy teaching task, a row of chalk boxes are arranged on the teacher's desk. The large desktop space is occupied, and when the chalk needs to be used, the operation of turning the body, disassembling the chalk box and the like is needed; the problems of insufficient convenience and more occupied space exist.
Disclosure of Invention
The invention aims to provide a chalk containing device for a smart blackboard, which achieves the functions of instant taking and the advantages of simple use through the functions of a containing hopper and a chalk taking device, can avoid occupying the desktop space required by teachers by containing the chalk containing device in the containing hopper at the back of the smart blackboard, has the advantages of easier arrangement and cleaning of the desktop and more ordered arrangement, and solves the problems of inconvenience and more occupied space.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a chalk containing device for an intelligent blackboard, which comprises an intelligent blackboard body, a containing hopper and a chalk taking device, wherein the containing hopper is arranged on the intelligent blackboard body; the back of the edge of the bottom of the intelligent blackboard body is fixedly provided with a chalk taking device and a containing hopper; a discharge chute is arranged at the bottom of the rectangular pipe; the powder taking pen device comprises a discharge pipe, a pressing rod and a material pushing block; a feeding groove is formed in the upper part of the discharge pipe; the feeding chute is communicated with the discharging chute of the containing hopper; a pressing plate and a material pushing block are respectively fixed at two ends of the pressing rod; the side surface of the discharge pipe is provided with a limiting sliding chute; the inner side of the limiting sliding chute is in sliding fit with a pressing rod; the peripheral side surface of the pressing rod is matched with a spring; the spring is located between the pressing plate and the limiting sliding groove.
The chalk storage device comprises a containing hopper, a discharge chute, a plurality of chalk storage boxes and a plurality of chalk storage boxes, wherein relatively more chalks are contained in the containing hopper, a certain amount of chalks are also stored in the discharge chute, and the storage amount in the discharge chute is about 0.5-1 box; the chalk in the containing hopper slides into the discharging groove; the chalk in the discharge chute slides into the discharge pipe through the feed chute; when the chalk needs to be taken out, the pressing plate on the pressing rod is pressed, the pushing block moves inwards, the chalk falls off, the pressing plate is loosened, the pressing rod returns under the action of the tensile force of the spring, and the pushing block pushes the fallen chalk outwards for a short distance so that the chalk can be taken out conveniently by hand; therefore, the multifunctional table can achieve the advantages of being capable of being used and taken immediately and being used simply and conveniently, and can be stored in the storage hopper on the back of the intelligent blackboard, so that the multifunctional table can not occupy the space of a table top required by a teacher any more, and the multifunctional table has the advantages that the table top can be sorted and cleaned more easily and can be placed more orderly.
Furthermore, the chalk taking device is positioned on the back of the two side edges of the bottom of the intelligent blackboard body; it aims to provide the function of convenient taking.
Furthermore, the chalk taking device is positioned on the back of the center of the bottom of the intelligent blackboard body; it aims to provide the function of convenient taking.
Further, the pressing rod is of a J-shaped structure.
Furthermore, the intelligent blackboard body is provided with a through hole A matched with the pipe orifice of the discharge pipe; the pipe orifice of the discharge pipe is matched with the inner surface of the through hole A; the intelligent blackboard body is matched with the chalk taking device, so that chalk taking operation can be performed on the front of the two side edges of the bottom of the intelligent blackboard body or the front of the center of the bottom.
Furthermore, the intelligent blackboard body is provided with a through hole B matched with the pressing plate on the pressing rod; the pressing plate on the pressing rod is matched with the inner surface of the through hole B.
Furthermore, a separation layer is fixed in the containing hopper; the separating layer has the function that the separating layer enables the containing hopper to be divided into a material discharging layer and a material discharging layer; the discharge layer is positioned above the separation layer, and has the advantages of large storage space and relatively more storage quantity; the discharging layer is directly communicated with the feeding groove and the discharging groove, namely, chalk in the discharging layer slides into the discharging groove; the chalk in the discharge chute slides into the discharge pipe through the feed chute; when the chalk in the discharging layer is used up, the chalk in the discharging layer can be manually supplemented into the discharging layer.
Furthermore, the inner wall of the containing hopper is uniformly provided with flow blocking blocks; the flow blocking block has the effects of reducing the speed of the chalk in sliding and slowing down the sliding acceleration to a certain extent; the chalk holding device can also play a certain supporting role on the chalk in the containing hopper, so that the phenomenon that a large amount of chalk is extruded to the chalk below the chalk to cause the chalk to be clamped due to large extrusion is avoided; meanwhile, when the chalk in the discharge pipe is taken by hands, the chalk is relatively easy to take, the pressure of the chalk above the chalk is relatively small, and the friction force generated by the chalk is relatively small; when the mutual extrusion is small, the acting force on the chalk is relatively small, so that the chalk is not easy to break; the chalk has the advantage of ensuring the integrity of the chalk to a certain degree.
Furthermore, the flow blocking block is of a semi-cylindrical structure, so that chalks positioned at various positions of the flow blocking block can be guaranteed to be relatively stable in contact surface, and the chalks cannot be broken due to uneven stress.
Furthermore, the containing hopper, the flow choking block and the chalk taking device are made of soft rubber materials; the rubber material is comparatively soft, has the cushioning effect, reaches the advantage of the integrality of certain degree guarantee chalk.
The invention has the following beneficial effects:
1. the invention achieves the function effect of taking the chalk immediately after use and the advantage of simple use through the functions of the storage hopper and the chalk taking device, and the invention can avoid occupying the desktop space required by teachers by storing the chalk in the storage hopper at the back of the intelligent blackboard, and has the advantages that the desktop is easier to clean and more orderly to place.
2. The separating layer has the effect that the separating layer enables the containing hopper to be divided into the discharging layer and the blanking layer; the discharge layer is positioned above the separation layer, and has the advantages of large storage space and relatively more storage quantity; the discharging layer is directly communicated with the feeding groove and the discharging groove, namely, chalk in the discharging layer slides into the discharging groove; the chalk in the discharge chute slides into the discharge pipe through the feed chute; the chalk storage hopper has the advantages that the chalk storage hopper can be used for setting larger storage capacity, so that the number of stored chalks is increased; the times of replenishing chalk are reduced.
3. The inner wall of the containing hopper is uniformly provided with the flow choking blocks; the flow blocking block has the effects of reducing the speed of the chalk in sliding and slowing down the sliding acceleration to a certain extent; the chalk holding device can also play a certain supporting role on the chalk in the containing hopper, so that the phenomenon that a large amount of chalk is extruded to the chalk below the chalk to cause the chalk to be clamped due to large extrusion is avoided; meanwhile, when the chalk in the discharge pipe is taken by hands, the chalk is relatively easy to take, the pressure of the chalk above the chalk is relatively small, and the friction force generated by the chalk is relatively small; when the mutual extrusion is small, the acting force on the chalk is relatively small, so that the chalk is not easy to break; the chalk has the advantage of ensuring the integrity of the chalk to a certain degree.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a front view of a chalk containing device for an intelligent blackboard according to the present invention;
FIG. 2 is a schematic structural view of the receiving hopper and the chalk taking device in an unpressed state;
FIG. 3 is a schematic structural view of the receiving hopper and the chalk taking device in a pressing state;
FIG. 4 is a schematic view of the pressing rod;
FIG. 5 is a schematic view of the internal structure of the receiving hopper and the chalk taking device;
FIG. 6 is a schematic view showing the distribution of the chalk and the storage hopper and the chalk taking device;
in the drawings, the components represented by the respective reference numerals are listed below:
1-intelligent blackboard body, 2-containing hopper, 3-chalk taking device, 4-chalk, 101-through hole A, 102-through hole B, 201-discharging groove, 202-choke block, 203-separating layer, 301-discharging pipe, 302-pressing rod, 303-pushing block, 304-limiting sliding groove, 305-spring and 306-feeding groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1-6, the present invention relates to a chalk storage device for a smart blackboard, which comprises a smart blackboard body 1, a storage hopper 2 and a chalk taking device 3; the back of the edge of the bottom of the intelligent blackboard body 1 is fixedly provided with a chalk taking device 3 and a containing hopper 2; a discharge chute 201 is arranged at the bottom of the rectangular pipe; the chalk taking device 3 comprises a discharge pipe 301, a pressing rod 302 and a material pushing block 303; the upper part of the discharge pipe 301 is provided with a feed chute 306; the feed chute 306 is communicated with the discharge chute 201 of the receiving hopper 2; a pressing plate and a material pushing block 303 are respectively fixed at two ends of the pressing rod 302; the peripheral side surface of the discharge pipe 301 is provided with a limiting sliding chute 304; a pressing rod 302 is in sliding fit with the inner side of the limiting sliding chute 304; a spring 305 is fitted on the peripheral side surface of the pressing rod 302; the spring 305 is located between the pressing plate and the limiting chute 304.
Relatively more chalks 4 are stored in the storage hopper 2, a certain amount of chalks 4 are stored in the discharge chute 201, and the storage amount in the discharge chute 201 is about 0.5-1 box; the chalk 4 in the containing hopper 2 slides into the discharging groove 201; the chalk 4 in the discharging groove 201 slides into the discharging pipe 301 through the feeding groove 306; when the chalk 4 needs to be taken out, the pressing plate on the pressing rod 302 is pressed, the pushing block 303 moves inwards, the chalk 4 falls down, the pressing plate is loosened, the pressing rod 302 returns under the action of the pulling force of the spring 305, and the dropped chalk 4 is pushed outwards by the pushing block 303 for a short distance so as to be taken out conveniently by hand; therefore, can reach function effect and the simple and convenient advantage of using of getting promptly to and accomodate it and fight 2 in to accomodating at wisdom blackboard back, alright in order not to occupy the desktop space that the teacher needs, have the desktop clean and put more orderly advantage of arranging easily more.
Preferably, the chalk taking device 3 is positioned on the back of the two side edges of the bottom of the intelligent blackboard body 1; it aims to provide the function of convenient taking.
Preferably, the chalk taking device 3 is positioned on the back of the center of the bottom of the intelligent blackboard body 1; it aims to provide the function of convenient taking.
Preferably, the pressing rod 302 has a J-shaped structure.
Preferably, the intelligent blackboard body 1 is provided with a through hole A101 matched with the pipe orifice of the discharge pipe 301; the pipe orifice of the discharge pipe 301 is matched with the inner surface of the through hole A101; the intelligent blackboard body 1 is matched with the chalk taking device 3, so that chalk taking operation can be carried out on the front surfaces of the two side edges of the bottom of the intelligent blackboard body 1 or the front surface of the center of the bottom.
Preferably, the intelligent blackboard body 1 is provided with a through hole B102 matched with the pressing plate on the pressing rod 302; the pressing plate on the pressing lever 302 engages with the inner surface of the through hole B102.
Preferably, a partition layer 203 is fixed in the storage bucket 2; the function of the separation layer 203 is that the separation layer 203 divides the receiving hopper 2 into a discharging layer and a blanking layer; the discharge layer is located above the separation layer 203, and has the advantages of large storage space and relatively more storage quantity; the blanking layer is directly communicated with the feeding groove 306 and the discharging groove 201, namely, the chalks 4 in the blanking layer slide into the discharging groove 201; the chalk 4 in the discharging groove 201 slides into the discharging pipe 301 through the feeding groove 306; when the chalk 4 in the lower material layer is used up, the chalk 4 in the material outlet layer can be manually supplemented into the lower material layer.
Preferably, the inner wall of the receiving hopper 2 is uniformly provided with flow blocking blocks 202; the flow blocking block 202 has the function of reducing the speed of the chalk 4 during sliding and playing a role in slowing down the sliding acceleration to a certain extent; the chalk 4 in the containing hopper 2 can be supported to a certain extent, so that the phenomenon that a large amount of chalk is extruded to the chalk 4 below the chalk to cause the chalk to be clamped due to large extrusion is avoided; meanwhile, when the chalk 4 in the discharge pipe 301 is taken by hand, the chalk is relatively easy, the pressure of the chalk 4 on the root chalk 4 is relatively small, and the friction force generated by the chalk is relatively small; when the mutual extrusion is small, the acting force on the chalk 4 is relatively small, so that the situation of breakage is not easy to occur; has the advantage of ensuring the integrity of the chalk 4 to a certain degree.
Preferably, the flow blocking block 202 is a semi-cylindrical structure, so that the chalk 4 positioned at each position of the flow blocking block 202 can ensure that the contact surface is stable, and the chalk cannot be broken due to uneven stress.
Preferably, the receiving hopper 2, the choke block 202 and the chalk taking device 3 are made of soft rubber; the rubber material is relatively soft, has a buffering effect, and achieves the advantage of ensuring the integrity of the chalk 4 to a certain degree.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (10)
1. A chalk containing device for a smart blackboard comprises a smart blackboard body (1); the method is characterized in that: the chalk box also comprises a containing hopper (2) and a chalk taking device (3);
the back of the edge of the bottom of the intelligent blackboard body (1) is fixedly provided with a chalk taking device (3) and a containing hopper (2); a discharge chute (201) is arranged at the bottom of the rectangular pipe;
the chalk taking device (3) comprises a discharge pipe (301), a pressing rod (302) and a material pushing block (303); a feeding groove (306) is formed in the upper part of the discharge pipe (301); the feeding chute (306) is communicated with the discharging chute (201) of the containing hopper (2); a pressing plate and a material pushing block (303) are respectively fixed at two ends of the pressing rod (302); the side surface of the discharge pipe (301) is provided with a limiting sliding chute (304); a pressing rod (302) is in sliding fit with the inner side of the limiting sliding groove (304); a spring (305) is matched with the peripheral side surface of the pressing rod (302); the spring (305) is positioned between the pressing plate and the limiting sliding groove (304).
2. The chalk containing device for the intelligent blackboard according to claim 1, wherein the chalk taking device (3) is located on the back of the two side edges of the bottom of the intelligent blackboard body (1).
3. The chalk containing device for the intelligent blackboard according to claim 1, wherein the chalk taking device (3) is located on the back of the center of the bottom of the intelligent blackboard body (1).
4. The chalk containing device for the intelligent blackboard according to claim 1, wherein the pressing rod (302) is of a J-shaped structure.
5. The chalk containing device for the intelligent blackboard according to claim 1, wherein the intelligent blackboard body (1) is provided with a through hole A (101) matched with the nozzle of the discharge pipe (301); the pipe orifice of the discharge pipe (301) is matched with the inner surface of the through hole A (101).
6. The chalk containing device for the intelligent blackboard according to claim 1, wherein the intelligent blackboard body (1) is provided with a through hole B (102) matched with the pressing plate on the pressing rod (302); the pressing plate on the pressing rod (302) is matched with the inner surface of the through hole B (102).
7. The chalk containing device for the intelligent blackboard according to claim 1, wherein a separating layer (203) is fixed in the containing hopper (2).
8. The chalk containing device for the intelligent blackboard according to claim 7, wherein the inner wall of the containing hopper (2) is uniformly provided with flow blocking blocks (202).
9. The chalk containing device for the intelligent blackboard according to claim 8, wherein the choke block (202) is a semi-cylindrical structure.
10. The chalk containing device for the intelligent blackboard according to claim 9, wherein the containing hopper (2), the choke block (202) and the chalk taking device (3) are made of soft rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438789.0A CN112497957A (en) | 2020-12-07 | 2020-12-07 | Chalk storage device for intelligent blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438789.0A CN112497957A (en) | 2020-12-07 | 2020-12-07 | Chalk storage device for intelligent blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112497957A true CN112497957A (en) | 2021-03-16 |
Family
ID=74970771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011438789.0A Withdrawn CN112497957A (en) | 2020-12-07 | 2020-12-07 | Chalk storage device for intelligent blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112497957A (en) |
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| EP0719535A2 (en) * | 1994-12-30 | 1996-07-03 | ROEKO GmbH + Co. Dentalerzeugnisse | Dispenser for cotton-wool rolls or similar |
| CN201536743U (en) * | 2009-11-30 | 2010-08-04 | 李玉新 | Suspended multifunctional chalk box |
| CN201668081U (en) * | 2010-05-27 | 2010-12-15 | 黄传友 | Automatic chalk box |
| CN201958013U (en) * | 2011-01-17 | 2011-09-07 | 许瑞光 | Automatic chalk box |
| CN203732151U (en) * | 2014-03-25 | 2014-07-23 | 济钢集团有限公司 | Anti-blocking apparatus of belt weigher |
| CN204250636U (en) * | 2014-10-29 | 2015-04-08 | 吴昊 | A kind of cotton swab box |
| CN204635360U (en) * | 2015-05-22 | 2015-09-16 | 中国矿业大学 | A kind of multifunctional chalk box |
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| CN206507491U (en) * | 2016-12-19 | 2017-09-22 | 闵凡银 | A kind of primary school Chinese teacher chalk box for teaching |
| CN206612346U (en) * | 2017-04-13 | 2017-11-07 | 张金宇 | Chalk holder and box-packed chalk |
| CN107549965A (en) * | 2017-08-01 | 2018-01-09 | 安徽卓特信息技术有限公司 | It is a kind of to facilitate chalk holder |
| CN107825904A (en) * | 2017-12-25 | 2018-03-23 | 宿迁百事达教学设备有限公司 | A kind of packaged type blackboard for education |
| CN108689009A (en) * | 2018-06-25 | 2018-10-23 | 朱璇 | A kind of chalk storage device |
| CN208064695U (en) * | 2017-11-25 | 2018-11-09 | 郭思玲 | A kind of chalk holder |
| CN110254968A (en) * | 2019-07-15 | 2019-09-20 | 陈巧佩 | A kind of medical blood taking pipe intelligence dispensing apparatus |
| CN209711903U (en) * | 2019-02-27 | 2019-12-03 | 吉林省神州教育科技有限公司 | A kind of chalk holder |
| CN209883312U (en) * | 2019-03-15 | 2020-01-03 | 陕西职业技术学院 | Chalk box |
| CN210503978U (en) * | 2019-09-02 | 2020-05-12 | 赖伟骏 | Chopstick box |
| CN111361336A (en) * | 2020-04-03 | 2020-07-03 | 重庆工业职业技术学院 | Chalk box convenient to take |
-
2020
- 2020-12-07 CN CN202011438789.0A patent/CN112497957A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0719535A2 (en) * | 1994-12-30 | 1996-07-03 | ROEKO GmbH + Co. Dentalerzeugnisse | Dispenser for cotton-wool rolls or similar |
| CN201536743U (en) * | 2009-11-30 | 2010-08-04 | 李玉新 | Suspended multifunctional chalk box |
| CN201668081U (en) * | 2010-05-27 | 2010-12-15 | 黄传友 | Automatic chalk box |
| CN201958013U (en) * | 2011-01-17 | 2011-09-07 | 许瑞光 | Automatic chalk box |
| CN203732151U (en) * | 2014-03-25 | 2014-07-23 | 济钢集团有限公司 | Anti-blocking apparatus of belt weigher |
| CN204250636U (en) * | 2014-10-29 | 2015-04-08 | 吴昊 | A kind of cotton swab box |
| CN204635360U (en) * | 2015-05-22 | 2015-09-16 | 中国矿业大学 | A kind of multifunctional chalk box |
| CN106240196A (en) * | 2016-08-25 | 2016-12-21 | 叶芳 | A kind of blackboard with portable chalk box |
| CN206507491U (en) * | 2016-12-19 | 2017-09-22 | 闵凡银 | A kind of primary school Chinese teacher chalk box for teaching |
| CN206612346U (en) * | 2017-04-13 | 2017-11-07 | 张金宇 | Chalk holder and box-packed chalk |
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| CN108689009A (en) * | 2018-06-25 | 2018-10-23 | 朱璇 | A kind of chalk storage device |
| CN209711903U (en) * | 2019-02-27 | 2019-12-03 | 吉林省神州教育科技有限公司 | A kind of chalk holder |
| CN209883312U (en) * | 2019-03-15 | 2020-01-03 | 陕西职业技术学院 | Chalk box |
| CN110254968A (en) * | 2019-07-15 | 2019-09-20 | 陈巧佩 | A kind of medical blood taking pipe intelligence dispensing apparatus |
| CN210503978U (en) * | 2019-09-02 | 2020-05-12 | 赖伟骏 | Chopstick box |
| CN111361336A (en) * | 2020-04-03 | 2020-07-03 | 重庆工业职业技术学院 | Chalk box convenient to take |
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