CN2878080Y - Chalk writing-aid device - Google Patents
Chalk writing-aid device Download PDFInfo
- Publication number
- CN2878080Y CN2878080Y CN 200620095120 CN200620095120U CN2878080Y CN 2878080 Y CN2878080 Y CN 2878080Y CN 200620095120 CN200620095120 CN 200620095120 CN 200620095120 U CN200620095120 U CN 200620095120U CN 2878080 Y CN2878080 Y CN 2878080Y
- Authority
- CN
- China
- Prior art keywords
- chalk
- arc
- shaft
- writing brush
- snap ring
- 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
Links
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model provides a simple structure and easy manufacture chalk writing-aid machine, which prevents users from pasting with chalk ash and improves the utilization factor of chalks. The technique proposal refers to the utility model is provided with a penholder with piercing cavity which is compatible with the outside diameter; the penholder piercing cavity is provided inside with a flexible snap ring formed by two semicircle sheet steel connecting together; the penholder is provided with two longitudinal sliding grooves which form into a certain direction, and the flexible snap ring is provided with a neck journal stretching out from one of the longitudinal sliding grooves of the penholder; the neck journal is fixed with an arc on one end and the arc is provided with threaded nails on both ends, one of which is a clamping nail screwed on one of the threaded hole of the arc and the head of the clamping nail is pressed on the flexible snap ring through the other longitudinal sliding groove, a locating nail fixed on the other nail of the arc and the head of the locating nail is opposite to the outer surface of the penholder.
Description
Technical field
The utility model belongs to a kind of teaching appurtenance, relates to the chalk writing aid.
Background technology
The chalk that uses in the middle of teaching is the chalk of bareing at present, all has been stained with chalk dust during use on one's body, on hand; Particularly use last chalk head, because hand can not be controlled, the chalk head has all still fallen, and promptly wastes and contaminated environment.In order to address this is that, the chalk clamping device of different structure has appearred, but this class device common configuration complexity that occurs, cost is higher, is difficult for promoting.As the patent No. is that 98220345.4 Chinese patent discloses a kind of chalk clamper, and its feature is to adopt elasticity inner sleeve, locking jacket tube, spring to realize the clamping of chalk.This chalk clamper, sticking chalk dust can be avoided reaching on hand on one's body, the utilization rate of chalk head can be improved, but the processing of its complex structure, particularly elasticity inner sleeve, locking jacket tube trouble, the cost height of clamper is not easy to promote.
Technology contents
The purpose of this utility model provides a kind of simple in structure, chalk writing aid of being easy to make, avoids reaching sticking on hand chalk dust on one's body, improves the utilization rate of chalk head.
For the attainment of one's purpose, the technical solution of the utility model is as follows:
The chalk writing aid has one the shaft of a writing brush that connects cavity is arranged, and the perforation cavity of the shaft of a writing brush and the external diameter of chalk adapt; In connecting cavity, the shaft of a writing brush is provided with the snap ring that two semicircle steel disc one ends connect and compose, the shaft of a writing brush is provided with two longitudinal sliding slots at an angle, snap ring is provided with the longitudinal sliding slot of radially-protruding axle journal from the shaft of a writing brush and passes, the end of axle journal is fixed with an arc, the two ends of arc are provided with screwed hole, a pinching screw is spun on the screwed hole of arc, and the head of pinching screw passes another longitudinal sliding slot roof pressure on the shaft of a writing brush on snap ring; A dog screw is spun on another screwed hole of arc, and the head of dog screw is relative with the outer surface of the shaft of a writing brush.
The use principle of this chalk writing aid is: at first unclamp dog screw, pinching screw, chalk is inserted in the perforation cavity that the shaft of a writing brush gets, the chalk head exposes the length that can write; Along the sliding tray on the shaft of a writing brush snap ring is moved on to suitable position then, hold out against on shaft of a writing brush outer surface, make the snap ring location by the dog screw head; Last turn dog screw roof pressure snap ring, thus the chucking chalk just can be write.After the chalk head uses up, can unclamp, chalk is outwards pulled out certain length, the locking of snap ring shift position, continue to write with chalk.
The beneficial effect of this chalk writing aid is described below: this chalk writing aid is a kind of writing aid simple in structure, when using its clamping chalk to write, can avoid hand directly to contact with chalk, prevent that dust is bonded on hand and on one's body; Because snap ring can make things convenient for running fix in the shaft of a writing brush, can guarantee that out of use chalk head is very short, improve the utilization rate of chalk, saved chalk, reduce the chalk head and abandon the environmental pollution that causes.This chalk writing aid is compared with existing chalk clamper, and structure is simpler, makes easily, and processing cost is low, suitable promoting the use of.
Description of drawings
Fig. 1 is a structure cutaway view of the present utility model.
Fig. 2 is along the A-A cutaway view among Fig. 1.
The specific embodiment
Chalk writing aid as shown in Figure 1, 2 has one the shaft of a writing brush 1 that connects cavity is arranged.The perforation cavity of the shaft of a writing brush 1 and the external diameter of chalk 2 adapt, and the length of the shaft of a writing brush 1 is generally greater than the length of 3/4 chalk; In the shaft of a writing brush 1 perforation cavity, be provided with the snap ring 3 that two semicircle steel disc one ends connect and compose, the shaft of a writing brush 1 is provided with two longitudinal sliding slots 4,5 at an angle, snap ring 3 is provided with the longitudinal sliding slot 4 of radially-protruding axle journal from the shaft of a writing brush and passes, the end of axle journal is fixed with an arc 6, the two ends of arc 6 are provided with screwed hole, a pinching screw 7 is spun on the screwed hole of arc, and the head of pinching screw 7 passes longitudinal sliding slot 5 roof pressures on the shaft of a writing brush 1 on snap ring 3; A dog screw 8 is spun on another screwed hole of arc, and the head of dog screw 8 is relative with the outer surface of the shaft of a writing brush 1.
Claims (1)
1, chalk writing aid has one the shaft of a writing brush that connects cavity is arranged, and it is characterized in that: the perforation cavity of the shaft of a writing brush and the external diameter of chalk adapt; In connecting cavity, the shaft of a writing brush is provided with the snap ring that two semicircle steel disc one ends connect and compose, the shaft of a writing brush is provided with two longitudinal sliding slots at an angle, snap ring is provided with the longitudinal sliding slot of radially-protruding axle journal from the shaft of a writing brush and passes, the end of axle journal is fixed with an arc, the two ends of arc are provided with screwed hole, a pinching screw is spun on the screwed hole of arc, and the head of pinching screw passes another longitudinal sliding slot roof pressure on the shaft of a writing brush on snap ring; A dog screw is spun on another screwed hole of arc, and the head of dog screw is relative with the outer surface of the shaft of a writing brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620095120 CN2878080Y (en) | 2006-01-17 | 2006-01-17 | Chalk writing-aid device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620095120 CN2878080Y (en) | 2006-01-17 | 2006-01-17 | Chalk writing-aid device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2878080Y true CN2878080Y (en) | 2007-03-14 |
Family
ID=37860494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620095120 Expired - Fee Related CN2878080Y (en) | 2006-01-17 | 2006-01-17 | Chalk writing-aid device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2878080Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861429A (en) * | 2018-08-28 | 2020-03-06 | 成都友谊教学设备有限公司 | Chalk sleeve for teaching |
-
2006
- 2006-01-17 CN CN 200620095120 patent/CN2878080Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110861429A (en) * | 2018-08-28 | 2020-03-06 | 成都友谊教学设备有限公司 | Chalk sleeve for teaching |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2878080Y (en) | Chalk writing-aid device | |
| CN2915529Y (en) | Bushing pencil capable of being used by single finger | |
| CN2925909Y (en) | Rotary core knockout pen | |
| CN201124691Y (en) | Quick-drying correction pen | |
| CN202293815U (en) | Ink storage writing brush | |
| CN201148045Y (en) | Multifunctional pencil tube | |
| CN202573417U (en) | Painting pencil | |
| CN2472950Y (en) | Writing brush | |
| CN202130171U (en) | Writing pen | |
| CN202557004U (en) | Recoil-type water-absorbing pen | |
| CN2739003Y (en) | Clean-keeping ball-point pen | |
| CN201309333Y (en) | Pencil extender | |
| CN201082631Y (en) | Multi-purpose pen | |
| CN201224255Y (en) | Multipurpose stationery | |
| CN2714330Y (en) | Fountain writing brush | |
| CN2923346Y (en) | Writing brush with straw | |
| CN201151279Y (en) | Chalk jacket | |
| CN2209043Y (en) | Ball-point pen type fountain-pen | |
| CN200945771Y (en) | Economizing pen cap | |
| CN202264533U (en) | Pen sleeve for conveniently drawing straight line | |
| CN201456727U (en) | Novel gel pen | |
| CN201646087U (en) | Series connection pen | |
| CN2524938Y (en) | Pencil sharpening sleeve | |
| CN2832542Y (en) | Pen savers | |
| CN201211770Y (en) | Chalk |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |