CN201309328Y - Environmental protecting type chalk device - Google Patents
Environmental protecting type chalk device Download PDFInfo
- Publication number
- CN201309328Y CN201309328Y CNU2008202262530U CN200820226253U CN201309328Y CN 201309328 Y CN201309328 Y CN 201309328Y CN U2008202262530 U CNU2008202262530 U CN U2008202262530U CN 200820226253 U CN200820226253 U CN 200820226253U CN 201309328 Y CN201309328 Y CN 201309328Y
- Authority
- CN
- China
- Prior art keywords
- chalk
- seat
- guide
- guide block
- cavity
- 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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- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Abstract
The utility model discloses an environmental protecting type chalk device comprising a pen holder provided with an intracavity and a chalk, wherein a chalk seat is arranged in the intracavity in a sliding mode, a chalk mounting cavity is arranged on the chalk seat, one end of the chalk is fixedly arranged in the chalk mounting cavity, a guiding cavity is arranged on the chalk seat, a guide block is arranged in the guiding cavity, a guiding groove is arranged on the pen holder along the axial direction, a plurality of locating grooves are arranged on the guiding groove, a through-hole which is communicated with the guiding cavity is arranged on the chalk seat, the chalk device is further provided with a locating block, one end of the locating block is fixedly connected with the guide block and the other end is traversed through the through-hole and the guiding groove and extends outside a tubular pen holder, a projecting part is arranged on one side of the locating block, which is close to the guide block, and a guiding part is arranged on the side of the locating block, which is far away from the guide block, and an elastic device is arranged between the chalk seat and the guide block. The chalk device has the advantages of simple structure and convenient and sanitary use, and can prevent users from directly contacting the chalks.
Description
Technical field
The utility model relates to a kind of teaching aid, especially relates to a kind of environment protection-type chalk device that can not pollute hand.
Background technology
The chalk of writing as blackboard still is to use a kind of very widely stationery at present.It in use, except a large amount of dust from flying influenced teachers and students and other user healthy, the directly hand-held chalk of user also can cause the contact secondary pollution, and easy dirty teaching materials, teaching notes and other realia, and clothing and student's operation.Simultaneously, the chalk phenomenon that in use often fractures, utilization rate is low, and waste is serious.
Summary of the invention
Goal of the invention of the present utility model is to disclose a kind of simple in structure, easy to use, health, can avoid user's hand directly to contact the environment protection-type chalk device of chalk.
The technical solution of the utility model is: environment protection-type chalk device, comprise the penholder and the chalk that are provided with inner chamber, described inner chamber one end sealing, slide in the described inner chamber and be provided with the chalk seat, the chalk seat is provided with the chalk installation cavity, described chalk one end is stretched in the inner chamber and is fixedly installed in the chalk installation cavity, described chalk seat is provided with guide cavity, be provided with guide block in the guide cavity, in axial direction extend on the described penholder and be provided with guide groove, arrange on the guide groove and be provided with some locating slots, described chalk seat is provided with the open-work that is communicated with guide cavity, this chalk device also is provided with locating piece, locating piece one end fixedly connected with guide block and in addition end pass open-work successively and guide groove stretches out outside the tubulose penholder, be provided with the protuberance corresponding and be provided with the guide part corresponding near guide block one side on the described locating piece, be provided with elastic device between described chalk seat and the guide block with guide groove away from guide block one side with locating slot.
Described elastic device is a spring.
Be positioned at the lumen openings end on the described tubulose penholder and be provided with internal diameter and chalk external diameter tube that corresponding chalk is held.
Described locating piece is positioned at the outer end of tubulose penholder and is provided with the finger pressure piece.
The utility model in use, just then can hold penholder and need not contact chalk with the person, and can be by handling locating piece, make on the locating piece protuberance and locating slot to throwing off by pressing down locating piece, move back and forth in the tubulose penholder thereby promote chalk seat promotion chalk afterwards,, unclamp locating piece at correct position, under spring action, promote locating piece and make that protuberance cooperates the location on the locating piece with locating slot, be convenient to normal use.Can adjust at any time like this that chalk stretches out or the length of the penholder of withdrawing, adjust length at every turn and be equal to the spacing of doing two locating slots, chalk is subjected to penholder in use and protects not frangibility like this.And the replaceable new chalk in back of finishing using, simple in structure, easy to use, cleaning.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is further described.
Fig. 1 is the structural representation of the utility model environment protection-type chalk device;
Fig. 2 is the utility model locating piece structural representation.
The specific embodiment
Press Fig. 1, environment protection-type chalk device, comprise the penholder 1 and the chalk 2 that are provided with inner chamber 13, the sealing of inner chamber 13 1 ends, tubulose penholder 1 can adopt the form that is threaded with the tubulose penholder by the cap for brush 11 that is used for closed inner chamber, in inner chamber 13, slide and be provided with chalk seat 3, chalk seat 3 is provided with the chalk installation cavity, chalk 2 one ends are stretched in the inner chamber 13 and are fixedly installed in the chalk installation cavity, chalk seat 3 is provided with guide cavity 33, be provided with guide block 32 in the guide cavity 33, in axial direction extend on the described penholder 1 and be provided with guide groove 5, arrange on the guide groove 5 and be provided with some locating slots 51, chalk seat 3 is provided with the open-work that is communicated with guide cavity 33, this chalk device also is provided with locating piece 4, locating piece 4 one ends fixedly connected with guide block 32 and in addition end pass open-work successively and guide groove 5 stretches out outside the tubulose penholder 1, be provided with the protuberance 41 corresponding near guide block 32 1 sides on the locating piece 4 and be provided with the guide part 42 corresponding with guide groove 5 away from guide block 32 1 sides with locating slot 51, be provided with elastic device 31 between chalk seat 3 and the guide block 32, elastic device 31 can adopt spring.On tubulose penholder 1, be positioned at inner chamber 13 openends and be provided with internal diameter and the corresponding chalk of chalk 2 external diameters and hold tube 12, when writing to play to the support of chalk.By 2, an end is provided with finger pressure piece 43 outside locating piece 4 is positioned at tubulose penholder 1, so that the manipulation of locating piece 4 is used.
Claims (4)
1, environment protection-type chalk device, comprise the penholder (1) and the chalk (2) that are provided with inner chamber (13), described inner chamber (13) one ends sealing, it is characterized in that: sliding in the described inner chamber (13) is provided with chalk seat (3), chalk seat (3) is provided with the chalk installation cavity, described chalk (2) one ends are stretched in the inner chamber (13) and are fixedly installed in the chalk installation cavity, described chalk seat (3) is provided with guide cavity (33), be provided with guide block (32) in the guide cavity (33), in axial direction extend on the described penholder (1) and be provided with guide groove (5), guide groove (5) is gone up to arrange and is provided with some locating slots (51), described chalk seat (3) is provided with the open-work that is communicated with guide cavity (33), this chalk device also is provided with locating piece (4), locating piece (4) one ends fixedly connected with guide block (32) and in addition end pass open-work successively and guide groove (5) stretches out outside the tubulose penholder (1), described locating piece (4) is gone up near guide block (32) one sides and is provided with the protuberance (41) corresponding with locating slot (51) and is provided with the guide part (42) corresponding with guide groove (5) away from guide block (32) one sides, is provided with elastic device (31) between described chalk seat (3) and the guide block (32).
2, environment protection-type chalk device as claimed in claim 1, it is characterized in that: described elastic device (31) is a spring.
3, environment protection-type chalk device as claimed in claim 1 is characterized in that: be positioned at inner chamber (13) openend on the described tubulose penholder (1) and be provided with internal diameter and the corresponding chalk of chalk (2) external diameter and hold tube (12).
4, as claim 1,2 or 3 described environment protection-type chalk devices, it is characterized in that: described locating piece (4) is positioned at the outer end of tubulose penholder (1) and is provided with finger pressure piece (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202262530U CN201309328Y (en) | 2008-11-21 | 2008-11-21 | Environmental protecting type chalk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202262530U CN201309328Y (en) | 2008-11-21 | 2008-11-21 | Environmental protecting type chalk device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201309328Y true CN201309328Y (en) | 2009-09-16 |
Family
ID=41106581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202262530U Expired - Fee Related CN201309328Y (en) | 2008-11-21 | 2008-11-21 | Environmental protecting type chalk device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201309328Y (en) |
-
2008
- 2008-11-21 CN CNU2008202262530U patent/CN201309328Y/en not_active Expired - Fee Related
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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: 20090916 Termination date: 20091221 |