CN2070249U - Convenient chalk holder - Google Patents
Convenient chalk holder Download PDFInfo
- Publication number
- CN2070249U CN2070249U CN 90208099 CN90208099U CN2070249U CN 2070249 U CN2070249 U CN 2070249U CN 90208099 CN90208099 CN 90208099 CN 90208099 U CN90208099 U CN 90208099U CN 2070249 U CN2070249 U CN 2070249U
- Authority
- CN
- China
- Prior art keywords
- chalk
- cylinder
- screw rod
- convenient
- gland
- 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.)
- Pending
Links
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model relates to a novel convenient chalk holder, comprising a gland, a spring, a screw bolt, an elastic piece and a cylinder. With the advantages of novel appearance, low cost, convenient installation and operation, reduced chalk damage, sanitation and cleanness, etc., the utility model can be widely used for writing and demonstration on a blackboard for teaching in a class.
Description
The utility model belongs to teaching aid, belongs to the anchor clamps of teaching with chalk more precisely.
At present, teaching classroom generally is that the teacher writes demonstration with hand-held chalk on blackboard, the damage rate higher (comprising the chalk head) of general chalk, and also the teacher makes full hand powder ash very unhygienic after class.
The purpose of this utility model is for overcoming the above-mentioned defective that exists, the convenient folder of a utility model chalk of design.Chalk during it was both capable of reducing using is lost, and can dwindle the chalk head again, more needn't make the teacher expire hand powder ash.
Design concept of the present utility model is: the screw rod that can slide up and down along cylinder is housed in the lower end of a cylinder is the cylinder of splayed angle, four lonely shape elastic steel sheets of its screw rod bottom band, in the middle of screw rod top and the cylinder top spring is housed, and screws with gland nut and to bind.Thumb is pushed down gland during use, and all the other four fingers clamp cylinder.Thumb is pressed lower cover compression spring, lead-screw along cylinder inner wall to lower slider.Four flexure strips on the screw rod just open, and at this moment chalk are put into; The flexure strip that spring is about on the screw rod when unclamping thumb is regained the clamping chalk along cylinder inner wall.In use, along with the wearing and tearing of chalk, successively pressing cover makes chalk stretch out gradually for the teacher along cylindrical direction and uses.
The utlity model has better economic and social benefit, it can reduce losing of chalk in the use, has guaranteed that again the teacher do not stain chalk dust on hand.
Embodiment of the present utility model draws in conjunction with the accompanying drawings:
Fig. 1, be the convenient folder of chalk cut-away view:
Fig. 2, be the convenient folder of chalk side view
Among the figure: (1) is gland, and (2) are spring, and (3) are screw rod, and (4) are flexure strip, and (5) are cylinder.
Cylinder (5) is by the rigid plastics casting, and its lower opening is splayed, and its top center drilling is exposed at the cylinder upper screw and is loaded onto spring (2) by the lower end screw rod (3) of packing into, has in screwing on and screw rod coupling nut gland (1).Its screw rod (3) is put into cylinder (5) part and is fixed with four elastic steel sheets (4) with screw or strand notes.Its four elastic steel sheets are that lonely shape foot is wedge, and the inboard has sawtooth.Its wedge and cylinder (5) lower end splayed opening is complementary, and four lonely shape spring steel plates realize clamping the function of chalk when cylinder slides.
Claims (4)
1, the convenient folder of a kind of novel chalk, it is made up of gland, spring, screw rod, flexure strip and cylinder, it is characterized in that screw rod has four arc flexure strips and can slide to clamp and flexible chalk with the cylinder inner wall coupling.
2, the convenient folder of chalk according to claim 1 is characterized in that four flexure strip bottoms on the screw rod are wedge, and in have sawtooth.
3, chalk is convenient according to claim 1 presss from both sides, and it is characterized in that the cylinder opening place is splayed.
4, chalk is convenient according to claim 1 presss from both sides, and it is characterized in that cylinder, screw rod and gland by the plastics casting, and flexure strip can be made with the stronger stalloy material of elasticity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90208099 CN2070249U (en) | 1990-06-01 | 1990-06-01 | Convenient chalk holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90208099 CN2070249U (en) | 1990-06-01 | 1990-06-01 | Convenient chalk holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2070249U true CN2070249U (en) | 1991-01-30 |
Family
ID=4888418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90208099 Pending CN2070249U (en) | 1990-06-01 | 1990-06-01 | Convenient chalk holder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2070249U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105365449A (en) * | 2015-11-19 | 2016-03-02 | 华蓥市阳和镇小学 | Adjustable chalk sleeve with hand protection function |
| CN105365448A (en) * | 2015-11-19 | 2016-03-02 | 华蓥市阳和镇小学 | Multifunctional chalk sleeve |
| CN105415930A (en) * | 2015-11-27 | 2016-03-23 | 沈晶晶 | Novel chalk sleeve |
| CN105459677A (en) * | 2015-11-19 | 2016-04-06 | 华蓥市阳和镇小学 | Heating type hand guard chalk sleeve |
| CN107009784A (en) * | 2015-11-27 | 2017-08-04 | 盐城麦知汇科技有限公司 | A kind of application method of chalk sleeve |
| CN108898920A (en) * | 2018-08-29 | 2018-11-27 | 倪凡 | A kind of multi-modal translation apparatus for demonstrating of visualization based on teaching platform |
| CN112405578A (en) * | 2020-11-23 | 2021-02-26 | 哈工大机器人（合肥）国际创新研究院 | Pen-shaped workpiece clamping mechanism at tail end of manipulator |
-
1990
- 1990-06-01 CN CN 90208099 patent/CN2070249U/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105365449A (en) * | 2015-11-19 | 2016-03-02 | 华蓥市阳和镇小学 | Adjustable chalk sleeve with hand protection function |
| CN105365448A (en) * | 2015-11-19 | 2016-03-02 | 华蓥市阳和镇小学 | Multifunctional chalk sleeve |
| CN105459677A (en) * | 2015-11-19 | 2016-04-06 | 华蓥市阳和镇小学 | Heating type hand guard chalk sleeve |
| CN105415930A (en) * | 2015-11-27 | 2016-03-23 | 沈晶晶 | Novel chalk sleeve |
| CN107009784A (en) * | 2015-11-27 | 2017-08-04 | 盐城麦知汇科技有限公司 | A kind of application method of chalk sleeve |
| CN108898920A (en) * | 2018-08-29 | 2018-11-27 | 倪凡 | A kind of multi-modal translation apparatus for demonstrating of visualization based on teaching platform |
| CN112405578A (en) * | 2020-11-23 | 2021-02-26 | 哈工大机器人（合肥）国际创新研究院 | Pen-shaped workpiece clamping mechanism at tail end of manipulator |
| CN112405578B (en) * | 2020-11-23 | 2022-07-26 | 哈工大机器人（合肥）国际创新研究院 | Pen-shaped workpiece clamping mechanism at tail end of manipulator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2070249U (en) | Convenient chalk holder | |
| CN210234473U (en) | Chalk clamping device is used in teaching of mr of Japanese university | |
| CN2293451Y (en) | Automatic clamping cover for chalk | |
| CN210113120U (en) | Chalk sleeve with eraser | |
| CN2155309Y (en) | Chalk holder | |
| CN2344186Y (en) | Magnetic black-white dual-purpose writing board | |
| CN214688727U (en) | Chalk sleeve for humanistic teacher | |
| CN216695409U (en) | Multifunctional gas inspection auxiliary tool plate | |
| CN2188489Y (en) | Writing chalk on blackboard | |
| CN210148998U (en) | Chalk cylinder device capable of being pushed for use | |
| CN213150083U (en) | Blank is used in basic course teaching | |
| CN212555611U (en) | High-efficient wear-resisting blackboard | |
| CN212256645U (en) | Novel multifunctional pointer | |
| CN218056802U (en) | Support arrangement convenient to paper is recycled | |
| CN2032551U (en) | Rotary dust-free blackboard | |
| CN2192464Y (en) | Book clip for desk | |
| CN211617193U (en) | Chalk holder for teaching | |
| CN2526185Y (en) | Multifunctional simple blackboard erazer | |
| CN2158788Y (en) | Simple chalk cover | |
| CN2225357Y (en) | Multifunction teaching material clamp | |
| CN2076928U (en) | Multi-functional eraser with handle | |
| CN2206726Y (en) | Chalk cover | |
| CN2189336Y (en) | Multi-function teacher's pointer box | |
| CN2636345Y (en) | Teaching stick with chalk clamp | |
| CN2428300Y (en) | Prepelling type chalk |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |