CN204160963U - One flexibly connects formula educational compasses - Google Patents
One flexibly connects formula educational compasses Download PDFInfo
- Publication number
- CN204160963U CN204160963U CN201420609979.8U CN201420609979U CN204160963U CN 204160963 U CN204160963 U CN 204160963U CN 201420609979 U CN201420609979 U CN 201420609979U CN 204160963 U CN204160963 U CN 204160963U
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- inner core
- centering sleeve
- tooth
- bolt
- notch
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Abstract
The utility model relates to one and flexibly connects formula educational compasses, comprise centering sleeve, the bottom of centering sleeve is provided with one number service hole, centering sleeve upper end is provided with button, centering sleeve upper inside wall is provided with vertical bar, vertical bar lower end is provided with wedge-shaped opening, teeth groove is separated with between vertical bar, button lower end is provided with bolt, bolt top, bottom is corresponding respectively horizontally has upper tooth, lower tooth, upper tooth is stuck in teeth groove, bolt bottom cover has a spring, and a spring is positioned at lower tooth bottom, inner core is provided with in centering sleeve, inner core upper end evenly has notch, inner core is by Flexible Connector and centering sleeve connection, inner core is wound with rope, the rope other end is connected with a ring set.The utility model utilizes the engaging of upper tooth in teeth groove of button control bolt, the mated condition of indirect control bolt and inner core, utilize lower tooth to control the rotation of inner core, avoid user and uninterruptedly must press the situation that button ensures inner core locking, facilitate user and hold centering sleeve.
Description
Technical field
The utility model relates to teaching aid technical field, and specifically one flexibly connects formula educational compasses.
Background technology
Conventional teaching compasses are many to be made up of wood materials, and volume comparatively large, carry and operate inconvenience, be unfavorable for that instructors uses flexibly at writing on the blackboard classroom teaching, have impact on quality of instruction, occupy the classroom instruction time that this is just limited, reduce course and carry out speed.
Application number is that the Chinese patent of ZL201310406683.6 discloses a kind of compasses pen, it is provided with handwriting, handwriting lower end is provided with nib, handwriting is also provided with compasses point, described compasses poined afterbody area is large compared with head, handwriting surface is provided with the groove coordinated with compasses point, handwriting is connected with spooler, spooler is wound with connecting line, connecting line is in communication with the outside by line outlet, connecting line connects compasses point and spooler, the vertical range of line outlet and nib equals the tie point vertical range of compasses pointed nose and compasses point and connecting line, spooler is connected with clutch, handwriting is provided with the control stick handling spooler clutch.Described compasses point is connected by connecting line with between handwriting, and can draw the circle of larger radius, volume is little, lightweight, and connecting line is provided with the circle that graduation mark accurately can draw different radii simultaneously.
But, because the compasses point of above-mentioned handwriting is the movable part connected by connecting line, need during use to fix with hand, to position as center, in addition, because spooler is by Clutch Control, need keep a tight grip on the control lever with hand during use, ensure the normal engagement of clutch, therefore, user can not interrupt operation in the process of drawing circle.But in traditional instruction process, when blackboard height is higher, teacher disposablely can not paint whole circle, therefore, drawing circular operation will interrupt, so the circular masses adopting aforesaid way to draw is limited, can not reach the requirement as teaching aid.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides one to flexibly connect formula educational compasses.
The utility model solves its technical problem and realizes by the following technical solutions:
One flexibly connects formula educational compasses, comprise centering sleeve, the bottom of described centering sleeve is provided with one number service hole, the upper end of centering sleeve is provided with a button, described centering sleeve upper inside wall is evenly provided with vertical bar, the lower end of described vertical bar is provided with wedge-shaped opening, between vertical bar, uniform intervals has teeth groove, the lower end of described button is provided with bolt, the top of described bolt, bottom is corresponding respectively horizontally has upper tooth, lower tooth, described upper tooth is stuck in teeth groove, upper tooth can slide in teeth groove, bolt bottom cover has a spring, and spring is positioned at the bottom of lower tooth, a spring can when button down presses bolt, for lower tooth provides restoring force upwards, also inner core is provided with in described centering sleeve, the lower end of a described spring is pressed on the upper surface of inner core, the upper end of described inner core evenly has notch, described lower tooth is stuck in notch, lower tooth can slide in notch, because the upper tooth of bolt is stuck in teeth groove, when in lower tooth card entry slot mouth, lower tooth will stop inner core to rotate, described inner core is by Flexible Connector and centering sleeve connection, inner core is wound with rope, the other end of described rope is connected with the ring set of a placement chalk through one number service hole, the side of described ring set is connected with a screw, described screw is positioned at the chalk of ring set for holding out against.
The lower inner wall of described inner core is fixed with inner ring, also newel is provided with in inner core, described newel lower end is connected on centering sleeve, on newel, cover has No. two springs, and described No. two spring upper end are connected on newel, and No. two lower spring end are connected in inner ring, when inner core rotates, to there is deformation in No. two springs, after the power acted on inner core disappears, No. two springs make inner core reset.
The upper surface of described notch both sides is the inclined-plane tilted to notch, is beneficial to lower tooth and slips in notch.
Described rope is with scale.
Described rope is identical to the distance of centering sleeve bottom end to the Distance geometry one number service hole of ring set bottom, and be all less than 1.5cm, thus there is sufficient space arrange on the basis of centering pin in guarantee centering sleeve lower end, avoid as far as possible due to rope to the distance of ring set bottom or one number service hole to the distance of centering sleeve bottom end long cause due to feel relieved sleeve or ring set not easily vertically placement cause the situation that the circular masses of drafting is not high.
The beneficial effects of the utility model are: the utility model utilizes the engaging of upper tooth in teeth groove of button control bolt, thus indirectly control the mated condition of bolt and inner core, the lower tooth of bolt is utilized to control the rotation of inner core, avoid user in prior art and must ensure the situation that inner core locks by uninterrupted pressing button, facilitate user and hold centering sleeve, because rope is all nearer to the distance of centering sleeve bottom end to the Distance geometry one number service hole of ring set bottom, effectively can reduce and tilt to cause the situation that the rendering quality of circle is not high to occur because centering sleeve or ring set hold.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is internal structure schematic diagram of the present utility model;
Fig. 2 is three-dimensional view of the present utility model;
Fig. 3 is the three-dimensional view of inner core of the present utility model;
Fig. 4 is the three-dimensional view of bolt of the present utility model;
Fig. 5 is the three-dimensional view of ring set of the present utility model and screw;
Fig. 6 is the expansion schematic diagram of vertical bar of the present utility model, teeth groove and wedge-shaped opening.
Detailed description of the invention
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
As shown in Figures 1 to 6, one flexibly connects formula educational compasses, comprise centering sleeve 1, the bottom of described centering sleeve 1 is provided with one number service hole 2, the upper end of centering sleeve 1 is provided with a button 3, described centering sleeve 1 upper inside wall is evenly provided with vertical bar 4, see Fig. 6, the lower end of described vertical bar 4 is provided with wedge-shaped opening 5, between vertical bar 4, uniform intervals has teeth groove 6, the lower end of described button 3 is provided with bolt 7, see Fig. 4, the top of described bolt 7, bottom is corresponding respectively horizontally has upper tooth 8, lower tooth 9, described upper tooth 8 can slide in teeth groove 6, bolt 7 bottom cover has a spring 10, and spring 10 is positioned at the bottom of lower tooth 9, a spring 10 can at button 3 to when pressing down bolt 7, for lower tooth 9 provides restoring force upwards, when described upper tooth 8 is positioned at teeth groove 6, a spring 10 is nature, bolt 7 unloads, when pressing down bolt 7 and making upper tooth 8 be stuck in the wedge-shaped opening 5 of vertical bar 4 lower end, a spring 10 is compressive state, bolt 7 pressure-bearing, inner core 11 is also provided with in described centering sleeve 1, see Fig. 3, the lower end of a described spring 10 is pressed on the upper surface of inner core 11, the upper end of described inner core 11 evenly has notch 12, the upper surface of described notch 12 both sides is the inclined-plane tilted to notch 12, be beneficial to when button 3 presses down, lower tooth 9 slips in notch 12, upper tooth 8 due to bolt 7 is stuck in teeth groove 6, when lower tooth 9 snaps in notch 12, prevention inner core 11 rotates by lower tooth 9, the lower inner wall of described inner core 11 is provided with inner ring 13, newel 14 is also provided with in inner core 11, described newel 14 lower end is connected on centering sleeve 1, on newel 14, cover has No. two springs 15, described No. two spring 15 upper ends are connected on newel 14, No. two spring 15 lower ends are connected in inner ring 13, when inner core 11 rotates, to deformation be there is in No. two springs 15, after the power acted on inner core 11 disappears, No. two springs 15 make inner core 11 reset, inner core 11 is wound with and establishes graduated rope 16, the other end of described rope 16 is connected with the ring set 17 of a placement chalk through one number service hole 2, see Fig. 5, the side of described ring set 17 is connected with a screw 18, described screw 18 is for holding out against the chalk being positioned at ring set 17.
Described rope 16 is identical to the distance of centering sleeve 1 bottom to the Distance geometry one number service hole 2 of ring set 17 bottom, and be all less than 1.5cm, thus there is sufficient space arrange on the basis of centering pin in guarantee centering sleeve 1 lower end, avoid as far as possible due to rope 16 to the distance of ring set 17 bottom or one number service hole 2 to the distance of centering sleeve 1 bottom long cause due to centering sleeve 1 or ring set 17 not easily vertical placement cause the situation that the circular masses of drafting is not high.
During use, by button press 3, the upper tooth 8 of bolt 7 is pushed into wedge-shaped opening 5 place of vertical bar 4 lower end, the lower tooth 9 of bolt 7 slips in notch 12 by utilizing the inclined-plane of inner core 11 upper surface, thus inner core 11 is fixed, prevent inner core 11 from rotating, the length that now rope 16 is released into centering sleeve 1 outside from inner core 11 keeps fixing, button press 3 again, upper tooth 8 ejects in wedge-shaped opening 5, enter in teeth groove 6, under the effect of a spring 10, lower tooth 9 ejects in notch 12, now inner core 11 can rotate, the release adjustable length of rope 16, user is by centered by sleeve 1 of feeling relieved, the ring set 17 rotating rope 16 other end can draw circle, in addition, in ring set 17, degree is screwed by adjustment screw 18, adjustable screw 18 compresses degree to the chalk being arranged in ring set 17.
More than show and describe general principle of the present utility model, principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. one kind flexibly connects formula educational compasses, comprise centering sleeve, the bottom of described centering sleeve is provided with one number service hole, the upper end of centering sleeve is provided with a button, it is characterized in that: described centering sleeve upper inside wall is evenly provided with vertical bar, the lower end of described vertical bar is provided with wedge-shaped opening, between vertical bar, uniform intervals has teeth groove, the lower end of described button is provided with bolt, the top of described bolt, bottom is corresponding respectively horizontally has upper tooth, lower tooth, described upper tooth is stuck in teeth groove, upper tooth can slide in teeth groove, bolt bottom cover has a spring, and spring is positioned at the bottom of lower tooth, also inner core is provided with in described centering sleeve, the upper end of described inner core evenly has notch, described lower tooth is stuck in notch, lower tooth can slide in notch, described inner core is by Flexible Connector and centering sleeve connection, inner core is wound with rope, the other end of described rope is connected with ring set through one number service hole, the side of described ring set is connected with screw.
2. one according to claim 1 flexibly connects formula educational compasses, it is characterized in that: the lower inner wall of described inner core is fixed with inner ring, also newel is provided with in inner core, described newel lower end is connected on centering sleeve, on newel, cover has No. two springs, described No. two spring upper end are connected on newel, and No. two lower spring end are connected in inner ring.
3. one according to claim 1 flexibly connects formula educational compasses, it is characterized in that: the upper surface of described notch both sides is the inclined-plane tilted to notch.
4. one according to claim 1 flexibly connects formula educational compasses, it is characterized in that: described rope is with scale.
5. the one according to claim 1 or 4 flexibly connects formula educational compasses, it is characterized in that: described rope is identical to the distance of centering sleeve bottom end to the Distance geometry one number service hole of ring set bottom, and is all less than 1.5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420609979.8U CN204160963U (en) | 2014-10-15 | 2014-10-15 | One flexibly connects formula educational compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420609979.8U CN204160963U (en) | 2014-10-15 | 2014-10-15 | One flexibly connects formula educational compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204160963U true CN204160963U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420609979.8U Expired - Fee Related CN204160963U (en) | 2014-10-15 | 2014-10-15 | One flexibly connects formula educational compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204160963U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015229A (en) * | 2015-07-28 | 2015-11-04 | 杨柳青 | Circle drawing tool set |
| CN108313342A (en) * | 2018-03-28 | 2018-07-24 | 上海亚力机械科技有限公司 | Syringe filling machine structure |
-
2014
- 2014-10-15 CN CN201420609979.8U patent/CN204160963U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105015229A (en) * | 2015-07-28 | 2015-11-04 | 杨柳青 | Circle drawing tool set |
| CN108313342A (en) * | 2018-03-28 | 2018-07-24 | 上海亚力机械科技有限公司 | Syringe filling machine structure |
| CN108313342B (en) * | 2018-03-28 | 2024-05-07 | 上海亚力机械科技有限公司 | Filling mechanism of injector |
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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: 20150218 Termination date: 20151015 |
|
| EXPY | Termination of patent right or utility model |