CN204414886U - Efficient chalk writing device is used in a kind of teaching - Google Patents
Efficient chalk writing device is used in a kind of teaching Download PDFInfo
- Publication number
- CN204414886U CN204414886U CN201520125540.2U CN201520125540U CN204414886U CN 204414886 U CN204414886 U CN 204414886U CN 201520125540 U CN201520125540 U CN 201520125540U CN 204414886 U CN204414886 U CN 204414886U
- Authority
- CN
- China
- Prior art keywords
- ring body
- catch
- chalk
- spring
- protection head
- 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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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
Efficient chalk writing device is used in a kind of teaching; comprise a pen container; pen container is that double-decker specifically comprises inner core and urceolus; inner core lower end is connected with rubber tube; protection head is provided with outside rubber tube; protection head upper end is connected with bottom urceolus; inside rubber tube and protection head, to be provided with protruding arranged outside fluted; dead ring is provided with in groove; be provided with at least two chalks in inner core, chalk lower end protrudes from protection head, and chalk upper end is connected with the first catch contact; first catch is connected with the second spring one end, and the second spring other end is connected with the second catch.The utility model directly contacts chalk without the need to teacher, and energy available protecting teacher both hands, the utility model structure is simple, easy to operate, suitable popularization.
Description
Technical field
The utility model relates to a kind of teaching and uses efficient chalk writing device, belongs to physical teaching aid application.
Background technology
Teacher says class hour at use blackboard, will constantly hold chalk and write on blackboard, write, point and cannot be separated with chalk at all owing to will constantly make peace, and this situation contacted with chalk for a long time causes skin injury directly to the hand of teacher, brings harm to health.And the serious waste phenomenon that last bad gripping also causes chalk write by existing chalk.
Utility model content
The purpose of this utility model is to provide a kind of teaching to use efficient chalk writing device, efficiency utilization chalk while can protecting teacher's health very well by the utility model.
The purpose of this utility model is achieved through the following channels:
Efficient chalk writing device is used in a kind of teaching, comprise a pen container, described pen container is that double-decker specifically comprises inner core and urceolus, described inner core lower end is connected with rubber tube, protection head is provided with outside described rubber tube, described protection head upper end is connected with bottom urceolus, inside described rubber tube and protection head, to be provided with protruding arranged outside fluted, dead ring is provided with in described groove, described dead ring comprises left ring body, right ring body, upper ring body and lower ring body, described left ring body is identical with right ring body diameter, described upper ring body is identical with lower ring body diameter and upper ring body and lower ring body diameter is less than left ring body and right ring body diameter, left ring body is inserted at described upper ring body and lower ring body two ends respectively and right ring body is inner, the first spring is connected with between described upper ring body and lower ring body, be provided with at least two chalks in described inner core, chalk lower end protrudes from protection head, and chalk upper end is connected with the first catch contact, and described first catch is connected with the second spring one end, and the second spring other end is connected with the second catch, described urceolus bottom is provided with grip layer, be connected with at least two tube connectors outside described second catch, in described tube connector, be provided with card ball, between outside described card ball and the second catch, be provided with the 3rd spring, described card ball and be arranged on card ball and the draw-in groove be arranged on urceolus cooperatively interacts.
The utility model beneficial effect:
The inner core that the utility model passes through to arrange is for filling chalk; the rubber tube that inner core lower end is arranged and protection head; ensure that chalk can not break in the process of writing; and the second spring be arranged between the first catch and the second catch ensures that chalk can not stop to move downward along with writing; the utility model energy efficiency utilization chalk; even if only surplus some chalk ends can also be write; the utility model directly contacts chalk without the need to teacher; energy available protecting teacher both hands; the utility model structure is simple; easy to operate, suitable popularization.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model dead ring structural representation;
Fig. 3 is the utility model second catch plan structure connection diagram;
Fig. 4 is the A place structure for amplifying schematic diagram of Fig. 1;
Fig. 5 is the B place structure for amplifying schematic diagram of Fig. 1;
In figure, 1, inner core, 2, urceolus, 3, rubber tube; 4, head is protected, 5, dead ring, the 6, first catch, the 7, second spring; 8, the second catch, 9, grip layer, 10, chalk, 11, left ring body; 12, right ring body, 13, upper ring body, 14, lower ring body, the 15, first spring; 16, tube connector, 17, card ball, 18, draw-in groove; 19, the 3rd spring, 20, protruding, 21, groove.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described further.
Embodiment:
As shown in Figures 1 to 5, efficient chalk writing device is used in a kind of teaching, comprise a pen container, described pen container is that double-decker specifically comprises inner core 1 and urceolus 2, described inner core lower end is connected with rubber tube 3, protection 4 is provided with outside described rubber tube, described protection head upper end is connected with bottom urceolus, protruding 20 arranged outside fluted 21 are provided with inside described rubber tube and protection head, dead ring 5 is provided with in described groove, described dead ring comprises left ring body 11, right ring body 12, upper ring body 13 and lower ring body 14, described left ring body is identical with right ring body diameter, described upper ring body is identical with lower ring body diameter and upper ring body and lower ring body diameter is less than left ring body and right ring body diameter, left ring body is inserted at described upper ring body and lower ring body two ends respectively and right ring body is inner, the first spring 15 is connected with between described upper ring body and lower ring body, be provided with at least two chalks 10 in described inner core, chalk lower end protrudes from protection head, and chalk upper end is connected with the first catch 6 contact, and described first catch is connected with second spring 7 one end, and the second spring other end is connected with the second catch 8.
As the further optimization of this programme, described urceolus bottom is provided with grip layer 9.
As the further optimization of this programme, outside described second catch, be connected with at least two tube connectors 16.
As the further optimization of this programme, in described tube connector, be provided with card ball 17, between outside described card ball and the second catch, be provided with the 3rd spring 19.
As the further optimization of this programme, described card ball and be arranged on card ball and the draw-in groove 18 be arranged on urceolus and cooperatively interact.
Concrete using method:
As shown in Figures 1 to 5, the second catch, the second spring and the first catch take off by teacher, and then chalk is filled to few two and then the second catch, the second spring and first gear sheet is installed in inner core, card ball is just in time stuck in draw-in groove can be write; When chalk loss, chalk pushes away downwards by the second spring automatically, when spring falls short of, card ball is moved down several lattice, and concrete lattice number depends on the circumstances.
The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; any those of ordinary skill in the art are in the technical scope disclosed by the utility model; the change can expected without creative work or replacement, all should be encompassed within protection domain of the present utility model.Therefore, the protection domain that protection domain of the present utility model should limit with claims is as the criterion.
Claims (1)
1. efficient chalk writing device is used in a teaching, comprise a pen container, it is characterized in that, described pen container is that double-decker specifically comprises inner core and urceolus, described inner core lower end is connected with rubber tube, protection head is provided with outside described rubber tube, described protection head upper end is connected with bottom urceolus, inside described rubber tube and protection head, to be provided with protruding arranged outside fluted, dead ring is provided with in described groove, described dead ring comprises left ring body, right ring body, upper ring body and lower ring body, described left ring body is identical with right ring body diameter, described upper ring body is identical with lower ring body diameter and upper ring body and lower ring body diameter is less than left ring body and right ring body diameter, left ring body is inserted at described upper ring body and lower ring body two ends respectively and right ring body is inner, the first spring is connected with between described upper ring body and lower ring body, be provided with at least two chalks in described inner core, chalk lower end protrudes from protection head, and chalk upper end is connected with the first catch contact, and described first catch is connected with the second spring one end, and the second spring other end is connected with the second catch, described urceolus bottom is provided with grip layer, be connected with at least two tube connectors outside described second catch, in described tube connector, be provided with card ball, between outside described card ball and the second catch, be provided with the 3rd spring, described card ball and be arranged on card ball and the draw-in groove be arranged on urceolus cooperatively interacts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520125540.2U CN204414886U (en) | 2015-03-04 | 2015-03-04 | Efficient chalk writing device is used in a kind of teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520125540.2U CN204414886U (en) | 2015-03-04 | 2015-03-04 | Efficient chalk writing device is used in a kind of teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204414886U true CN204414886U (en) | 2015-06-24 |
Family
ID=53465286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520125540.2U Expired - Fee Related CN204414886U (en) | 2015-03-04 | 2015-03-04 | Efficient chalk writing device is used in a kind of teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204414886U (en) |
-
2015
- 2015-03-04 CN CN201520125540.2U patent/CN204414886U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20160304 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |