CN202278897U - Stretchable blackboard eraser - Google Patents
Stretchable blackboard eraser Download PDFInfo
- Publication number
- CN202278897U CN202278897U CN2011204514097U CN201120451409U CN202278897U CN 202278897 U CN202278897 U CN 202278897U CN 2011204514097 U CN2011204514097 U CN 2011204514097U CN 201120451409 U CN201120451409 U CN 201120451409U CN 202278897 U CN202278897 U CN 202278897U
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- CN
- China
- Prior art keywords
- blackboard eraser
- pipe
- outer tube
- spring
- groove
- 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 stretchable blackboard eraser comprising an outer pipe (1), an inner pipe (2) arranged in the outer pipe (2) and a blackboard eraser body (3) connected with the inner pipe (2), wherein one end, far away from the blackboard eraser body (3), of the end part of the inner pipe (2) is provided with a groove (4); the groove (4) is internally provided with a collision bead (5); correspondingly, a through hole (6) is arranged at the end part of the outer pipe (1); the through hole (6) is internally provided with a press button (7); a concave ring (8) is arranged on the inner wall of the other end of the outer pipe (1); a convex ring (9) is arranged on the outer circumference of the inner pipe (2); and a first spring (10) is arranged between the concave ring (8) and the convex ring (9). By utilizing the structure, the stretchable effect of the blackboard eraser is realized.
Description
Technical field
The utility model relates to a kind of blackboard eraser, relates in particular to a kind of Retractable blackboard eraser.
Background technology
The blackboard eraser that uses at present mostly is made up of blackboard eraser body and bristle, in student's wiping process, can fall a lot of dust, influences healthyly, and the short and small classmate's blackboard wiping of health is required great effort more.
Summary of the invention
The purpose of the utility model provides a kind of simple in structure, retractable blackboard eraser,
The technical scheme of the utility model is a kind of Retractable blackboard eraser; It comprises outer tube 1, be arranged in the said outer tube 1 interior pipe 2 and with said in the blackboard eraser body 3 that is connected of pipe 2, it is characterized in that: manage 2 end in said and be provided with groove 4 away from an end of said blackboard eraser body 3; Be installed in the said groove 4 and bump pearl 5; Corresponding end at said outer tube 1 is provided with through hole 6, is provided with button 7 in the said through hole 6, on the inwall of said outer tube 1 other end, is provided with scrobicular ring 8; In said, be provided with bulge loop 9 on the excircle of pipe 2, be provided with first spring 10 between said scrobicular ring 8 and the said bulge loop 9.
The technical scheme of the utility model also has describedly bumps pearl 5 and forms by being cylindrical shell 11, steel ball 12, spring 13; Said cylindrical shell 11 is provided with two ends; Wherein end sealing; The other end is a hollow structure, and said steel ball 12 is arranged in the hollow structure of said shell 11, in said shell 11 hollow structures, is provided with second spring 13 between said blind end and the said steel ball 12.
The beneficial effect of the utility model is to be provided with groove 4 through pipe 2 end in said and away from an end of said blackboard eraser body 3, is installed in the said groove 4 and bumps pearl 5, and corresponding end at said outer tube 1 is provided with through hole 6; Be provided with button 7 in the said through hole 6, on the inwall of said outer tube 1 other end, be provided with scrobicular ring 8, in said, be provided with bulge loop 9 on the excircle of pipe 2; Be provided with first spring 10 between said scrobicular ring 8 and the said bulge loop 9; Like this, press the button 7 during use, bump pearl 5 and be compressed; Pipe 3 moves elongation under the effect of first spring 10; The time spent does not firmly manage 2 and arrives buttons 7 positions in outer tube 1 pushes away, and through bumping pearl 5 interior pipe 2 is limited in the outer tube 1, has realized the flexible effect of blackboard eraser.
Description of drawings
Fig. 1 is the structural representation of the utility model
Fig. 2 is the enlarged drawing that bumps pearl among Fig. 1
Among Fig. 1,21, outer tube, 2, interior pipe, 3, the blackboard eraser body, 4, groove, 5, bump pearl, 6, through hole, 7, button, 8, scrobicular ring, 9, bulge loop, 10, first spring, 11, shell, 12, steel ball, 13, second spring.
The specific embodiment
According to Fig. 1, shown in 2, the utility model relates to a kind of Retractable blackboard eraser, and it comprises outer tube 1; Be arranged in the said outer tube 1 interior pipe 2 and with said in the blackboard eraser body 3 that is connected of pipe 2, manage 2 end in said and be provided with groove 4 away from an end of said blackboard eraser body 3, be installed in the said groove 4 and bump pearl 5; Describedly bump pearl 5 and form by being cylindrical shell 11, steel ball 12, spring 13, said cylindrical shell 11 is provided with two ends, wherein end sealing; The other end is a hollow structure, and said steel ball 12 is arranged in the hollow structure of said shell 11, in said shell 11 hollow structures, is provided with second spring 13 between said blind end and the said steel ball 12; Corresponding end at said outer tube 1 is provided with through hole 6, is provided with button 7 in the said through hole 6, on the inwall of said outer tube 1 other end, is provided with scrobicular ring 8; In said, be provided with bulge loop 9 on the excircle of pipe 2, be provided with first spring 10 between said scrobicular ring 8 and the said bulge loop 9, like this; Press the button 7 during use; Bump pearl 5 and be compressed, under the effect of first spring 10 in pipe 3 move elongation, time spent pipe 2 arrival buttons 7 positions to outer tube 1 pushes away in firmly; Through bumping pearl 5 interior pipe 2 is limited in the outer tube 1, has realized the flexible effect of blackboard eraser.
Claims (2)
1. Retractable blackboard eraser; It comprises outer tube (1), be arranged in the said outer tube (1) interior pipe (2) and with said in the blackboard eraser body (3) that is connected of pipe (2), it is characterized in that: manage the end of (2) in said and be provided with groove (4) away from an end of said blackboard eraser body (3); Be installed in the said groove (4) and bump pearl (5); Corresponding end at said outer tube (1) is provided with through hole (6), is provided with button (7) in the said through hole (6), on the inwall of said outer tube (1) other end, is provided with scrobicular ring (8); In said, be provided with bulge loop (9) on the excircle of pipe (2), be provided with first spring (10) between said scrobicular ring (8) and the said bulge loop (9).
2. Retractable blackboard eraser according to claim 1; It is characterized in that: describedly bump pearl (5) and form by being cylindrical shell (11), steel ball (12), spring (13); Said cylindrical shell (11) is provided with two ends, wherein end sealing, and the other end is a hollow structure; Said steel ball (12) is arranged in the hollow structure of said shell (11), in said shell (11) hollow structure, is provided with second spring (13) between said blind end and the said steel ball (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204514097U CN202278897U (en) | 2011-11-05 | 2011-11-05 | Stretchable blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204514097U CN202278897U (en) | 2011-11-05 | 2011-11-05 | Stretchable blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202278897U true CN202278897U (en) | 2012-06-20 |
Family
ID=46225075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204514097U Expired - Fee Related CN202278897U (en) | 2011-11-05 | 2011-11-05 | Stretchable blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202278897U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950330A (en) * | 2014-04-04 | 2014-07-30 | 深圳市福田区青少年科技教育协会 | Telescopic blackboard eraser |
| CN108799792A (en) * | 2018-07-05 | 2018-11-13 | 佛山途睿网络科技有限公司 | A kind of computer display holder |
| CN108862008A (en) * | 2018-06-26 | 2018-11-23 | 合肥市春华起重机械有限公司 | A kind of crane material placement plate |
| CN109041598A (en) * | 2018-06-30 | 2018-12-21 | 刘伟 | A kind of small-size rotary tiller arable land earth-retaining device |
-
2011
- 2011-11-05 CN CN2011204514097U patent/CN202278897U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950330A (en) * | 2014-04-04 | 2014-07-30 | 深圳市福田区青少年科技教育协会 | Telescopic blackboard eraser |
| CN108862008A (en) * | 2018-06-26 | 2018-11-23 | 合肥市春华起重机械有限公司 | A kind of crane material placement plate |
| CN109041598A (en) * | 2018-06-30 | 2018-12-21 | 刘伟 | A kind of small-size rotary tiller arable land earth-retaining device |
| CN108799792A (en) * | 2018-07-05 | 2018-11-13 | 佛山途睿网络科技有限公司 | A kind of computer display holder |
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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: 20120620 Termination date: 20121105 |