CN202038076U - Telescopic blackboard eraser - Google Patents
Telescopic blackboard eraser Download PDFInfo
- Publication number
- CN202038076U CN202038076U CN2011201885362U CN201120188536U CN202038076U CN 202038076 U CN202038076 U CN 202038076U CN 2011201885362 U CN2011201885362 U CN 2011201885362U CN 201120188536 U CN201120188536 U CN 201120188536U CN 202038076 U CN202038076 U CN 202038076U
- Authority
- CN
- China
- Prior art keywords
- blackboard eraser
- rod
- screw rod
- nut
- motor
- 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 telescopic blackboard eraser, which comprises a blackboard eraser body (8) and brushes (9), wherein the blackboard eraser body (8) is connected with one end of an inner rod (7), the other end of the inner rod (7) stretches into an outer rod (1), the end part of the other end of the inner rod (7) is fixedly provided with a nut (6), the nut (6) in the outer rod (1) is connected with one end of a screw rod (5), the other end of the screw rod (5) is connected with a universal driving device (4) which is controlled by a motor (3) and comprises a handle (10), the handle (10) is integrally connected with the outer rod (1) and is provided with a power switch (2) which controls forward/ reverse rotation of the motor (3), and the motor (3) in the outer rod (1) controls the universal driving device (4) to rotate. The universal driving device (4) is connected with the screw rod (5), so that the universal driving device (4) drives the screw rod (5) to rotate; and since the screw rod (5) is matched with the nut (6) fixed on the inner rod (7), when the power switch (2) rotates forwards, the nut (6) on the inner rod (7) rotates counterclockwise on the screw rod (5) so as to gradually stretch out of the outer rod (1), when the power switch (2) rotates reversely, the nut (6) on the inner rod (7) rotates clockwise on the screw rod (5) so as to gradually enter into the outer rod (1), and therefore, the telescopic 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
At present the blackboard eraser that uses 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 this utility model provides a kind of simple in structure, retractable blackboard eraser,
The technical solution of the utility model is a kind of Retractable blackboard eraser, it comprises blackboard eraser body 8 and bristle 9, it is characterized in that: described blackboard eraser body 8 connects an end of bar 7 in, the other end of bar 7 stretches in the outer bar 1 in described, and be installed with nut 6 in its end, described nut 6 is connected with an end of a screw rod 5 in the bar 1 outside described, the other end of described screw rod 5 connects a universal driving device 4, described universal driving device 4 is by motor 3 controls, it also comprises one handle 10, described handle 10 is connected with described outer bar 1 one, and described handle 10 is provided with the power switch 2 of described motor 3 rotatings of control.
The technical solution of the utility model also has described motor 3 to be installed on the dc source, and its voltage is the 6-12 volt.
The voltage that the technical solution of the utility model also has described motor 3 to be installed on the dc source is 9 volts.
The beneficial effects of the utility model are bar 1 built-in motor 3 control universal driving devices 4 rotations outside, because universal driving device 4 connects screw rod 5, therefore drive screw rod 5 rotations, again since this screw rod 5 cooperate with nut 6 on being fixed on interior bar 7, when power switch 2 is just changeing, bar 1 outside nut 6 on the interior bar 7 is rotated counterclockwise on screw rod 5 and progressively stretches out, when power switch 2 counter-rotatings, bar 1 outside nut 6 on the interior bar 7 turns clockwise on screw rod 5 and progressively enters has been realized the flexible effect to blackboard eraser.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Among Fig. 11, outer bar, 2, power switch, 3, motor,, 4, universal driving device, 5, screw rod, 6, nut, 7, interior bar, 8, the blackboard eraser body, 9, bristle, 10 handles.
The specific embodiment
According to shown in Figure 1, the utility model relates to a kind of Retractable blackboard eraser, it comprises blackboard eraser body 8 and bristle 9, described blackboard eraser body 8 connects an end of bar 7 in, the other end of bar 7 stretches in the outer bar 1 in described, and be installed with nut 6 in its end, described nut 6 is connected with an end of a screw rod 5 in the bar 1 outside described, the other end of described screw rod 5 connects a universal driving device 4, described universal driving device 4 is by motor 3 controls, it also comprises one handle 10, described handle 10 is connected with described outer bar 1 one, and described handle 10 is provided with the power switch 2 of described motor 3 rotatings of control, and described motor 3 is installed on the dc source, its voltage is the 6-12 volt, and preferably the voltage that described motor 3 is installed on the dc source is 9 volts; Bar 1 built-in motor 3 control universal driving devices 4 rotations outside, because universal driving device 4 connects screw rod 5, therefore drive screw rod 5 rotations, again since this screw rod 5 cooperate with nut 6 on being fixed on interior bar 7, when power switch 2 was just changeing, bar 1 outside the nut 6 on the interior bar 7 is rotated counterclockwise on screw rod 5 and progressively stretches out was when power switch 2 counter-rotatings, bar 1 outside nut 6 on the interior bar 7 turns clockwise on screw rod 5 and progressively enters has been realized the flexible effect to blackboard eraser.
Claims (3)
1. Retractable blackboard eraser, it comprises blackboard eraser body (8) and bristle (9), it is characterized in that: described blackboard eraser body (8) connects an end of bar (7) in, the other end of bar (7) stretches in the outer bar (1) in described, and be installed with nut (6) in its end, described nut (6) is connected with an end of a screw rod (5) in the bar outside described (1), the other end of described screw rod (5) connects a universal driving device (4), described universal driving device (4) is by motor (3) control, it also comprises one handle (10), described handle (10) is connected with described outer bar (1) one, and described handle (10) is provided with the power switch (2) of control described motor (3) rotating.
2. Retractable blackboard eraser according to claim 1 is characterized in that: described motor (3) is installed on the dc source, and its voltage is the 6-12 volt.
3. Retractable blackboard eraser according to claim 2 is characterized in that: the voltage that described motor (3) is installed on the dc source is 9 volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201885362U CN202038076U (en) | 2011-05-25 | 2011-05-25 | Telescopic blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201885362U CN202038076U (en) | 2011-05-25 | 2011-05-25 | Telescopic blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202038076U true CN202038076U (en) | 2011-11-16 |
Family
ID=44965539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201885362U Expired - Fee Related CN202038076U (en) | 2011-05-25 | 2011-05-25 | Telescopic blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202038076U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103568666A (en) * | 2013-09-07 | 2014-02-12 | 国家电网公司 | Automatic whiteboard eraser |
-
2011
- 2011-05-25 CN CN2011201885362U patent/CN202038076U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103568666A (en) * | 2013-09-07 | 2014-02-12 | 国家电网公司 | Automatic whiteboard eraser |
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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: 20111116 Termination date: 20120525 |