CN202413054U - Rotary chalk sleeve - Google Patents
Rotary chalk sleeve Download PDFInfo
- Publication number
- CN202413054U CN202413054U CN2012200528540U CN201220052854U CN202413054U CN 202413054 U CN202413054 U CN 202413054U CN 2012200528540 U CN2012200528540 U CN 2012200528540U CN 201220052854 U CN201220052854 U CN 201220052854U CN 202413054 U CN202413054 U CN 202413054U
- Authority
- CN
- China
- Prior art keywords
- shell
- rotary
- chalk sleeve
- nut
- rotating disc
- 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 relates to a rotary chalk sleeve and belongs to the field of office supplies. The rotary chalk sleeve comprises a shell; a nut is fixed in the center of the bottom of the shell; the rotary chalk sleeve is characterized in that a rotary plate is arranged below the shell; a screw which is matched with the nut is arranged corresponding to the nut; one end of the screw is fixedly connected with the rotary plate, and the other end of the screw is fixedly connected with a clamp head; and the clamp head is arranged in the shell. The rotary chalk sleeve is simple in structure; finger skin of a user can be protected well under the action of the shell; the condition that the finger skin becomes rough, has cracks and is eroded and cuticles drop due to the using of chalks can be avoided effectively; and the user has good mood.
Description
Technical field
The utility model relates to a kind of rotary chalk sleeve, belongs to the office appliance field.
Background technology
Nowadays teacher's used chalk of giving a lesson all exposes, and this chalk has used many decades, and as you know, the main component of chalk is calcium carbonate (lime stone) and calcium sulfate (gypsum), or contains a spot of calcium oxide.The maximum drawback of this chalk makes lime stone or gypsum stick to the finger when directly contacting with hand exactly easily; After long-time; User's finger skin meeting roughening, crackle, shedding, even can cause the finger skin erosion, have a strong impact on user's physical and mental health.
The utility model content
According to above deficiency of the prior art, the technical problem that the utility model will solve is: a kind of rotary chalk sleeve of protecting finger skin is provided.
The described rotary chalk sleeve of the utility model; Comprise shell, the outer casing bottom center fixation is provided with nut, it is characterized in that: the shell below is provided with rotating disc; Corresponding nut is provided with the screw rod that is complementary with it; Screw rod one end and rotating disc are fixedly connected, its other end chuck that has been fixedly connected, and chuck is arranged on enclosure.
During use, the rotating disc that turns clockwise earlier, rotating disc will drive chuck through screw rod and on nut, rotate; Make chuck be in the top of shell, chalk is clipped in the chuck, then the reverse rotation rotating disc; Let chuck drive in the chalk withdrawal shell, when writing if desired, rotating disc only need turn clockwise; It is a bit of that chalk is stretched out, and can use.
Wherein, said shell lateral wall is provided with tread plate.Prevent the utility model slippage in use.
Compared with prior art, the utlity model has following beneficial effect:
Pass through the utility model; It is simple in structure, under the effect of shell, can well protect user's finger skin; Prevented effectively because of using chalk to make situation such as finger skin roughening, crackle, shedding and erosion, for the user provides a good mood.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Among the figure: 1, chalk 2, shell 3, chuck 4, screw rod 5, tread plate 6, nut 7, rotating disc.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done and to be further described:
As shown in Figure 1, rotary chalk sleeve comprises shell 2; Shell 2 bottom centre are set with nut 6; Shell 2 belows are provided with rotating disc 7, and corresponding nut 6 is provided with the screw rod 4 that is complementary with it, and screw rod 4 one ends and rotating disc 7 are fixedly connected; Its other end chuck 3 that has been fixedly connected, chuck 3 is arranged on shell 2 inside.
During use, the rotating disc 7 that turns clockwise earlier, rotating disc 7 will drive chuck 3 through screw rod 4 and on nut 6, rotate; Make chuck 3 be in the top of shell 2, chalk 1 is clipped in the chuck 3, the reverse rotation rotating disc 7 then; Let chuck 3 drive in the chalk 1 withdrawal shell 2, when writing if desired, rotating disc 7 only need turn clockwise; It is a bit of that chalk 1 is stretched out, and can use.
Claims (2)
1. rotary chalk sleeve; Comprise shell (2), shell (2) bottom centre is set with nut (6), it is characterized in that: shell (2) below is provided with rotating disc (7); Corresponding nut (6) is provided with the screw rod (4) that is complementary with it; Screw rod (4) one ends and rotating disc (7) are fixedly connected, its other end chuck (3) that has been fixedly connected, and chuck (3) is arranged on shell (2) inside.
2. rotary chalk sleeve according to claim 1 is characterized in that: said shell (2) lateral wall is provided with tread plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200528540U CN202413054U (en) | 2012-02-17 | 2012-02-17 | Rotary chalk sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200528540U CN202413054U (en) | 2012-02-17 | 2012-02-17 | Rotary chalk sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202413054U true CN202413054U (en) | 2012-09-05 |
Family
ID=46737842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200528540U Expired - Fee Related CN202413054U (en) | 2012-02-17 | 2012-02-17 | Rotary chalk sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202413054U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773009A (en) * | 2015-05-12 | 2015-07-15 | 罗福仲 | Novel chalk cover |
-
2012
- 2012-02-17 CN CN2012200528540U patent/CN202413054U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104773009A (en) * | 2015-05-12 | 2015-07-15 | 罗福仲 | Novel chalk cover |
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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: 20120905 Termination date: 20130217 |