CN203093436U - Teaching chalk propeller - Google Patents
Teaching chalk propeller Download PDFInfo
- Publication number
- CN203093436U CN203093436U CN 201320091100 CN201320091100U CN203093436U CN 203093436 U CN203093436 U CN 203093436U CN 201320091100 CN201320091100 CN 201320091100 CN 201320091100 U CN201320091100 U CN 201320091100U CN 203093436 U CN203093436 U CN 203093436U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- inner sleeve
- chalk
- outer sleeve
- teaching
- 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
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Abstract
The utility model discloses a teaching chalk propeller. The teaching chalk propeller comprises a cylindrical outer sleeve opened at one end and an inner sleeve sleeved in the outer sleeve. The inner sleeve is opened at one end, the length of the outer sleeve is larger than that of the inner sleeve, a threaded rod is vertically and fixedly arranged in the center of the bottom of the outer sleeve, the top of the threaded rod penetrates through the centre of the bottom of the inner sleeve, a rim is fixedly arranged on the outer ring of the top of the inner sleeve, and a limit block is fixedly arranged at the top end of the threaded rod. A sleeve cover is arranged on one side of the top of the outer sleeve, a small magnet is fixedly arranged at the edge of the sleeve cover, the diameter of the sleeve cover is equal to that of the outer sleeve, and the rim is made of ferrous material. Compared with the prior art, the teaching chalk propeller has the advantages that a piece of chalk can be placed in the inner sleeve, and the chalk can be ejected out when the inner sleeve is clockwise rotated till the chalk is used up; and an opening of the inner sleeve can be covered by the sleeve cover when the chalk is used up. The teaching chalk propeller is simple in structure, and convenient and sanitary to use.
Description
Technical field
The utility model relates to a kind of realia, particularly a kind of teaching chalk propeller.
Background technology
All the time, chalk all is one of writing implement the most basic in the teaching process.But chalk is made by the chemical powder material, and self has corrosivity, in use directly contacts dangerously with hand, and permanent use more can influence hand hygiene and skin health.
Summary of the invention
The purpose of this utility model is to provide a kind of simple in structure, the teaching chalk propeller of health easy to use.
For achieving the above object, the utility model is implemented according to following technical scheme:
A kind of teaching chalk propeller, comprise an end opening circular cylindrical outer sleeve, be placed in the inner sleeve in the outer sleeve, inner sleeve is an end opening, described outer sleeve length is greater than the length of inner sleeve, outer sleeve inner bottom part center vertical fixing is provided with screw rod, the bottom centre place of inner sleeve is passed at the top of screw rod, and outer ring, described inner sleeve top fixedly installs the edge, and described screw tip fixedly installs limited block; Described outer sleeve top one side is provided with socket cover, and the socket cover edge fixedly installs a small magnet.
As preferably, the diameter of described socket cover equals the diameter of outer sleeve.
As preferably, described edge is that ferrous material is made.
Compared with prior art, the utility model can be contained in chalk in the inner sleeve, and the inner sleeve that turns clockwise can eject chalk, uses up up to chalk; After chalk uses up, can cover the opening of inner sleeve by socket cover.The utility model is simple in structure, health easy to use.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described, is used for explaining the utility model in the illustrative examples and the explanation of this utility model, but not as to qualification of the present utility model.
Teaching chalk propeller as shown in Figure 1, comprise an end opening circular cylindrical outer sleeve 1, be placed in the inner sleeve 4 in the outer sleeve 1, inner sleeve 4 is an end opening, outer sleeve 1 length is greater than the length of inner sleeve 4, outer sleeve 1 inner bottom part center vertical fixing is provided with screw rod 2, the bottom centre place of inner sleeve 4 is passed at the top of screw rod 2, and outer ring, inner sleeve 4 top fixedly installs edge 5, and screw rod 2 tops fixedly install limited block 3; Outer sleeve 1 top one side is provided with socket cover 6, and socket cover 6 edges fixedly install a small magnet 7.After being contained in chalk 8 in the inner sleeve 4, the inner sleeve 4 that turns clockwise can eject chalk 8, uses up up to chalk 8; After chalk 8 used up, at this moment, inner sleeve 4 had only edge 5 to be in outside the outer sleeve 1, can cover the opening of inner sleeve 4 by socket cover 6.
The diameter of its socket cover 6 equals the diameter of outer sleeve 1, and is more tight after socket cover 6 covers, and increases attractive in appearance.
Its edge 5 is made for ferrous material, and the edge 5 of small magnet 7 adhesive ironys prevents that effectively socket cover 6 from opening.
The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion of making according to the technical solution of the utility model all falls within the protection domain of the present utility model.
Claims (3)
1. teaching chalk propeller, comprise an end opening circular cylindrical outer sleeve (1), be placed in the inner sleeve (4) in the outer sleeve (1), inner sleeve (4) is an end opening, it is characterized in that: described outer sleeve (1) length is greater than the length of inner sleeve (4), outer sleeve (1) inner bottom part center vertical fixing is provided with screw rod (2), the bottom centre place of inner sleeve (4) is passed at the top of screw rod (2), described inner sleeve (4) outer ring, top fixedly installs edge (5), and described screw rod (2) top fixedly installs limited block (3); Described outer sleeve (1) top one side is provided with socket cover (6), and socket cover (6) edge fixedly installs a small magnet (7).
2. teaching chalk propeller according to claim 1 is characterized in that: the diameter of described socket cover (6) equals the diameter of outer sleeve (1).
3. teaching chalk propeller according to claim 1 is characterized in that: make for ferrous material described edge (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091100 CN203093436U (en) | 2013-02-28 | 2013-02-28 | Teaching chalk propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091100 CN203093436U (en) | 2013-02-28 | 2013-02-28 | Teaching chalk propeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203093436U true CN203093436U (en) | 2013-07-31 |
Family
ID=48844867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320091100 Expired - Fee Related CN203093436U (en) | 2013-02-28 | 2013-02-28 | Teaching chalk propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203093436U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427300A (en) * | 2016-10-22 | 2017-02-22 | 钟贵洪 | Automatic chalk sleeve capable of keeping chalk unbroken |
-
2013
- 2013-02-28 CN CN 201320091100 patent/CN203093436U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106427300A (en) * | 2016-10-22 | 2017-02-22 | 钟贵洪 | Automatic chalk sleeve capable of keeping chalk unbroken |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20140228 |