CN204382967U - Sucker type compass - Google Patents
Sucker type compass Download PDFInfo
- Publication number
- CN204382967U CN204382967U CN201520012717.8U CN201520012717U CN204382967U CN 204382967 U CN204382967 U CN 204382967U CN 201520012717 U CN201520012717 U CN 201520012717U CN 204382967 U CN204382967 U CN 204382967U
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- CN
- China
- Prior art keywords
- leg
- center
- circle
- sucker
- chainings
- 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 relates to a kind of sucker type compass, comprise body, center of circle leg and drawing leg, described center of circle leg is provided with terminal pad, the excircle of terminal pad is evenly distributed with three chainings, each chaining lower end rotary moveable is connected with sucker, and drawing leg lower end is provided with drawing pencil.The utility model arranges three sucked type chainings on the center of circle leg of compasses, when the hard drawing boards such as blackboard are drawn, after determining the center of circle by center of circle leg, by three sucked type chainings, center of circle leg is fixed, retain the needle point of center of circle leg, both conveniently determine home position, be convenient for measuring again painted circular dimension.
Description
Technical field:
The utility model relates to a kind of drawing instrument, is specifically related to a kind of sucker type compass on the hard materials such as blackboard, metal, glass during drafting circle.
Background technology:
Compasses are conventional drawing instruments, but, existing compasses are fitted at paper, the drawing board of the softwood matter such as plank is drawn, existing compasses are when drawing, compasses leg is needed to prick on drawing board, to determine home position, simultaneously, also require that the leg of compasses is enough tiny, with determine the accurate size of the circular radius of drafting, but, when needs are drawn on some hard materials, staff limited strength, be difficult to fix with compasses leg and drawing board, as: teacher is when imparting knowledge to students, when needing to draw circular on blackboard, compasses leg cannot be fixed on blackboard, even if of short duration fixing, when operation compasses are drawn, leg also can skid, draw difficult, even blackboard can be destroyed, this technical problem unresolved, technical staff have developed sucker type compass leg, namely by sucker, compasses are inhaled on blackboard, and then just do compasses drawing, but, the general area of sucker is larger, circular radius is caused accurately not determine.
Utility model content:
In sum, in order to overcome the deficiency of prior art problem, the utility model provides a kind of sucker type compass, it arranges three sucked type chainings on the center of circle leg of compasses, when the hard drawing boards such as blackboard are drawn, after determining the center of circle by center of circle leg, by three sucked type chainings, center of circle leg is fixed, retain the needle point of center of circle leg, be convenient for measuring painted circular dimension, structure is simple, easy to use.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
A kind of sucker type compass, wherein: comprise body, center of circle leg and drawing leg, described center of circle leg is provided with terminal pad, the excircle of terminal pad is evenly distributed with three chainings, each chaining lower end rotary moveable is connected with sucker, and drawing leg lower end is provided with drawing pencil.
Further, described chaining lower end and the ball-joint of sucker upper end.
Further, the lower end of described drawing leg is provided with point protector, and drawing pencil is locked by jackscrew and point protector.
The beneficial effects of the utility model are:
1, the utility model arranges three sucked type chainings on the center of circle leg of compasses, when the hard drawing boards such as blackboard are drawn, after determining the center of circle by center of circle leg, by three sucked type chainings, center of circle leg is fixed, retain the needle point of center of circle leg, both conveniently determine home position, be convenient for measuring again painted circular dimension.
2, the utility model structure is simple, convenient and practical, and diverse in function is easy to carry, overcomes existing compasses and to draw on hard material the problem of inconvenience.
Accompanying drawing illustrates:
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of sucker type compass, comprise body 1, center of circle leg 2 and drawing leg 3, described center of circle leg 2 is provided with terminal pad 4, the excircle of terminal pad 4 is evenly distributed with three chainings 5, each chaining 5 lower end rotary moveable is connected with sucker 6, chaining 5 lower end and sucker 6 upper end ball-joint, drawing leg 3 lower end is provided with point protector 8, and drawing pencil 7 is locked by jackscrew 9 and point protector 8.
During use, first on the hard drawing boards such as blackboard, determine home position, then the needle point of center of circle leg 2 and home position are fixed, finally three suckers 6 are inhaled on blackboard, operation compasses body 1, carry out circle to draw, paint circular radius and determined by the distance between the needle point of measure center leg 2 and tip of a pencil.
Be noted that, the above embodiment is unrestricted to the explanation of technical solutions of the utility model, the equivalent replacement of art those of ordinary skill or other amendment made according to prior art, as long as do not exceed thinking and the scope of technical solutions of the utility model, all should be included within the interest field required by the utility model.
Claims (3)
1. a sucker type compass, it is characterized in that: comprise body (1), center of circle leg (2) and drawing leg (3), described center of circle leg (2) is provided with terminal pad (4), the excircle of terminal pad (4) is evenly distributed with three chainings (5), each chaining (5) lower end rotary moveable is connected with sucker (6), and drawing leg (3) lower end is provided with drawing pencil (7).
2. sucker type compass according to claim 1, is characterized in that: described chaining (5) lower end and sucker (6) upper end ball-joint.
3. sucker type compass according to claim 1, it is characterized in that: the lower end of described drawing leg (3) is provided with point protector (8), drawing pencil (7) is locked by jackscrew (9) and point protector (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520012717.8U CN204382967U (en) | 2015-01-01 | 2015-01-01 | Sucker type compass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520012717.8U CN204382967U (en) | 2015-01-01 | 2015-01-01 | Sucker type compass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204382967U true CN204382967U (en) | 2015-06-10 |
Family
ID=53355716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520012717.8U Expired - Fee Related CN204382967U (en) | 2015-01-01 | 2015-01-01 | Sucker type compass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204382967U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437834A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Telescopic compasses |
| CN105437833A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Telescopic compasses |
-
2015
- 2015-01-01 CN CN201520012717.8U patent/CN204382967U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437834A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Telescopic compasses |
| CN105437833A (en) * | 2015-12-11 | 2016-03-30 | 苏州市启扬商贸有限公司 | Telescopic compasses |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20170101 |