CN203727054U - Automatic parallel compasses - Google Patents
Automatic parallel compasses Download PDFInfo
- Publication number
- CN203727054U CN203727054U CN201420111754.XU CN201420111754U CN203727054U CN 203727054 U CN203727054 U CN 203727054U CN 201420111754 U CN201420111754 U CN 201420111754U CN 203727054 U CN203727054 U CN 203727054U
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- rod
- connecting rod
- support
- compasses
- connecting rods
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Abstract
The utility model relates to automatic parallel compasses. The middle of a support of the automatic parallel compasses is adjustably connected with a central fine-tuning rod, two sides of the lower ends of the support and two sides of the lower end of the central fine-tuning rod are respectively movably hinged with the upper ends of two outer connecting rods and the upper ends of two inner connecting rods, the lower ends of the outer connecting rods and the inner connecting rods are respectively movably hinged with parallel connecting rods, the support, the outer connecting rods, the parallel connecting rods, the inner connecting rods and the central fine-tuning rod form a parallelogram, the two outer connecting rods are adjustably connected through nut rotating blocks, sliders and screws with hand wheels, the sliders are slidably connected with elongated central slide grooves in a matched manner and are rotationally connected with the nut rotating blocks, and the nut rotating blocks are in threaded connection with the screws with the hand wheels. The radius of the automatic parallel compasses can be adjusted quickly and precisely, so the automatic parallel compasses can precisely draw a small-radius circle. Meanwhile, needle tips and pen nibs are always perpendicular to paper automatically, thus, not only can paper be protected but drawn line width is constant. Drawing quality is guaranteed, and the automatic parallel compasses have higher usability and practicality.
Description
Technical field
The utility model relates to a kind of mechanical drawing instrument, is specifically related to a kind of auto-paralleling compasses.
Background technology
Compasses on market have problems now, common compasses are directly used two single pole compass legs, by both hands, pull open to regulate radius, can not fine adjustment radius, and owing to relying on the frictional force of rotating shaft place to fix compass leg opening angle completely, be not that compass leg is locked to such an extent that tension is exactly too loose, be inconvenient to use, and the compasses that some screw rods regulate can only change radius by rotating screw bolt, can not quick adjustment radius.And these compasses are when compass foot opens, and nib and needle point are not perpendicular to paper.The shortcoming that nib is not orthogonal to paper is: even if the thickness of lead for retractable pencil is constant, but because lead for retractable pencil has contacted angle with paper, so the live width drawing actual can not equal lead core diameter and along with the difference of contact angle constantly changes, the circular arc line weight drawing is uneven, often apprehensive, affect plotting quality.The shortcoming that needle point is not orthogonal to paper is: needle point oblique cutting enters paper, after rotation, will cause the hole more much bigger than the cross section of pin, destroys paper, even when drawing great circle, needle point contact paper angle is very large, to such an extent as to may slide, not only impact mapping but also the paper danger of hurting sb.'s feelings.In drawing, there are local still these compasses that much need to draw minor radius circle and circular arc all to seem quite painstaking when picture radius is less than the roundlet of 5mm left and right, all can not easily draw exactly roundlet.
Summary of the invention
The utility model is that a kind of auto-paralleling compasses will be provided, for effectively overcome the compasses sold on existing market can not be not only accurately but also quick adjustment radius, can not draw roundlet, needle point nib can not automatic vertical in drawbacks such as papers.
For achieving the above object, the technical solution of the utility model is: a kind of auto-paralleling compasses, comprise support, outside connecting rod, nut switch block, slide block, parallel rod, inside connecting rod, center regulating rod, screw rod with handwheel, be characterized in: in the middle of support, be connected with center regulating rod is adjustable, both sides, support lower end and both sides, regulating rod lower end, center are hinged with two outside connecting rod upper ends and two inside connecting rod movable upper ends respectively, outside connecting rod and inside connecting rod lower end are movably hinged with parallel rod respectively, support, outside connecting rod, parallel rod, inside connecting rod, center regulating rod forms a parallelogram, between two outside connecting rods, pass through nut switch block, slide block and with the adjustable connection of screw rod of handwheel, wherein, slide block coordinates and is slidably connected with the long chute in center of outside connecting rod, and be rotationally connected with nut switch block, nut switch block is connected with the screw flight with handwheel.
Support inner side is provided with the groove of clamping the upper and lower slip of center regulating rod Bing Shi center regulating rod, and its underpart is provided with two for outside connecting rod axial symmetry hole is installed.
Outside connecting rod two ends are equipped with axis hole, and centerline is provided with a long chute, and one end of close support is provided with half gear for two outside connecting rods engagement synchronous rotaries.
Nut switch block is a cylinder, at it, perpendicular to axis place, has one for coordinating the tapped through hole with handwheel screw.
Slip front has a box like structure, and box like structure and nut switch block rotate hinged, and there is a slide block coordinating with long chute on outside connecting rod rear end.
Parallel rod upper/lower terminal is provided with two axis holes, and when the distance between two axis holes and center regulating rod are rack-mount, the axis hole of center regulating rod is equal with the axis hole distance on corresponding support, and stitch and pen are installed respectively in the parallel rod lower end of both sides.
On inside connecting rod, have two axis holes, axis hole is apart from the axis hole with on outside connecting rod apart from equating, upper shaft hole connects center regulating rod, and lower shaft hole connects parallel rod.
There are two axis holes regulating rod lower end, center, and the pitch-row of two axis holes equates with two hole pitch-rows on support.
Screw rod with handwheel is a long bolt, and there is a handwheel centre, and both sides screw thread is connected with two of left and right nut switch block respectively.
When drawing minor radius bowlder, by initial position upwards after fine setting, the axis hole of center regulating rod is less than the distance between two axis holes on parallel rod upper/lower terminal with the distance between axis hole on corresponding support.
The beneficial effects of the utility model are:
The auto-paralleling compasses of the utility model design not only can rapid adjustment radius; can also fine adjustment radius; and can accurately draw minor radius circle; simultaneously needle point and nib all the time automatic vertical in paper; the live width of not only protecting paper but also assurance to draw is constant; guarantee plotting quality, there is good ease for use and practicality.
Accompanying drawing explanation
Fig. 1 is structural upright schematic diagram of the present utility model;
Fig. 2 is STRUCTURE DECOMPOSITION figure of the present utility model.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in detail.
As Fig. 1, shown in 2, a kind of auto-paralleling compasses, mainly comprise: support 1, outside connecting rod 2, nut switch block 3, slide block 4, parallel rod 5, inside connecting rod 6, center regulating rod 7, with the screw rod 8 of handwheel.
Connection center regulating rod 7 in the middle of support 1, support 1 both sides, lower end and center regulating rod 7 both sides, lower end are hinged with two outside connecting rod 2 upper ends and two inside connecting rod 6 movable upper ends respectively, outside connecting rod 2 and inside connecting rod 6 lower ends are movably hinged with parallel rod 5 respectively, described support 1, outside connecting rod 2, parallel rod 5, inside connecting rod 6, center regulating rod 7 forms a parallelogram, between two outside connecting rods 2, pass through nut switch block 3, slide block 4 and with the adjustable connection of screw rod 8 of handwheel, wherein, slide block 4 coordinates and is slidably connected with the long chute in center of outside connecting rod 2, and be rotationally connected with nut switch block 3, nut switch block 3 is threaded with the screw rod 8 with handwheel.
As shown in Figure 2.Two outside connecting rod 2 upper end axis holes and support 2 shaft hole matchings, there is tooth engagement (not shown in FIG.) outside connecting rod 2 upper ends.Outside connecting rod 2 lower end axis holes and pen/stitch connecting rod 5 upper end shaft hole matchings.Two of left and right parallel rod 5 is installed respectively pin and pen (simply drawing in figure).Parallel rod 5 lower end axis holes and inside connecting rod 6 lower end shaft hole matchings.Inside connecting rod 6 upper end axis holes and center regulating rod shaft hole matching.Center regulating rod 7 is sandwiched in support 1, can select to be fixed on initial position or upwards fine setting on support 1, when center regulating rod 7 is selected to be fixed on support 1, respective shaft pitch-row on axis hole on support 1 and center regulating rod 7 from the pitch-row of diaxon up and down that equals parallel rod 5 from, can form parallelogram.Slide block 4 is arranged in the long chute of outside connecting rod 2, can slide up and down or fixing (having deleted one herein) along long chute.Nut switch block 3 is arranged on that slide block 4 is interior freely to rotate.Screw rod 8 with handwheel coordinates with two of left and right nut switch block 3 respectively by screw thread, and handwheel and both sides nut switch block 3 are equidistant.
Support 1 inner side is provided with the groove of clamping the 7 Bing Shi center regulating rod 7 upper and lower slips of center regulating rod, and its underpart is provided with two for the symmetrical axis hole of outside connecting rod 2 is installed.Outside connecting rod 2 two ends are equipped with axis hole, and centerline is provided with a long chute, and one end of close support 1 is provided with half gear for two outside connecting rods engagement synchronous rotaries.Nut switch block 3 is a cylinder, at it, perpendicular to axis place, has one for coordinating the tapped through hole with handwheel screw 8.Slide block 4 front ends have a box like structure, and box like structure and nut switch block 3 rotates hinged, and there is a slide block coordinating with long chute on outside connecting rod 2 rear end.Parallel rod 5 upper/lower terminals are provided with two axis holes, when the distance between two axis holes and center regulating rod 7 are arranged on the initial position on support 1, the axis hole of center regulating rod 7 and the axis hole distance on corresponding support 1 equate and equal the upper and lower axis hole distance of parallel rod 5.On inside connecting rod 6, have two axis holes, axis hole is apart from the axis hole with on outside connecting rod 2 apart from equating, upper shaft hole connects center regulating rod 7, and lower shaft hole connects parallel rod 5.There are two axis holes regulating rod 7 lower ends in center, and the pitch-row of two axis holes equates with two hole pitch-rows on support 1.Screw rod 8 with handwheel is a long bolt, and there is a handwheel centre, and both sides screw thread is connected with two of left and right nut switch block 3 respectively.
When drawing minor radius bowlder, center regulating rod 7 is by initial position upwards after fine setting, and the axis hole of center regulating rod 7 is less than the distance between two axis holes on parallel rod 5 upper/lower terminals with the distance between axis hole on corresponding support 1.
During use:
(1) when needs change radius fast, pull up or down handwheel, with the screw rod 8 of handwheel, drive nut switch block 3 and the slide block 4 on both sides to slide up and down along the long chute on outside connecting rod 2, compasses bipod opens thereupon or draws in.When almost reaching required radius, lock slider 4, now, by rotating handwheel, pair radius is finely tuned, until accurately reach required radius, then carries out picture circle.In the process of whole adjustment radius, two of left and right parallel rod 5 remains parallel relation.
(2) when needs are drawn minor radius bowlder.Shift handwheel onto the end downwards, compass leg draws in thereupon fast, and then the micro-adjusting center regulating rod 7 that makes progress, the parallelogram of compass leg is out of shape a little, the parallel rod 5 on both sides is inward collapsible a little, with this, is adjusted to required minor radius, can accurately draw roundlet.
Claims (10)
1. auto-paralleling compasses, comprise support (1), outside connecting rod (2), nut switch block (3), slide block (4), parallel rod (5), inside connecting rod (6), center regulating rod (7), screw rod (8) with handwheel, it is characterized in that: described support (1) centre and adjustable connection of center regulating rod (7), support (1) both sides, lower end and center regulating rod (7) both sides, lower end are hinged with two outside connecting rod (2) upper ends and two inside connecting rods (6) movable upper end respectively, outside connecting rod (2) and inside connecting rod (6) lower end are movably hinged with parallel rod (5) respectively, described support (1), outside connecting rod (2), parallel rod (5), inside connecting rod (6), center regulating rod (7) forms a parallelogram, passes through nut switch block (3) between two outside connecting rods (2), slide block (4) and with the adjustable connection of screw rod (8) of handwheel, wherein, slide block (4) coordinates and is slidably connected with the long chute in center of outside connecting rod (2), and is rotationally connected with nut switch block (3), and nut switch block (3) is threaded with the screw rod (8) with handwheel.
2. auto-paralleling compasses according to claim 1, it is characterized in that: described support (1) inner side is provided with the groove of clamping the upper and lower adjustable sliding of center regulating rod (7) Bing Shi center regulating rod (7), and its underpart is provided with two for the symmetrical axis hole of outside connecting rod (2) is installed.
3. auto-paralleling compasses according to claim 1, is characterized in that: described outside connecting rod (2) two ends are equipped with axis hole, and centerline is provided with a long chute, and one end of close support (1) is provided with half gear for two outside connecting rods engagement synchronous rotaries.
4. auto-paralleling compasses according to claim 1, is characterized in that: described nut switch block (3) is a cylinder, at it, perpendicular to axis place, have one for coordinating the tapped through hole of band handwheel screw (8).
5. auto-paralleling compasses according to claim 1, is characterized in that: there is a box like structure described slide block (4) outside, and box like structure and nut switch block (3) rotate hinged, and there is a slide block coordinating with long chute on outside connecting rod (2) rear end.
6. auto-paralleling compasses according to claim 1, it is characterized in that: described parallel rod (5) upper/lower terminal is provided with two axis holes, distance between two axis holes and center regulating rod (7) are arranged on support (1) and when initial position, the axis hole of center regulating rod (7) equates with the axis hole distance on corresponding support (1), and stitch and pen are installed respectively in the parallel rod of both sides (5) lower end.
7. auto-paralleling compasses according to claim 1, is characterized in that: on described inside connecting rod (6), have two axis holes, axis hole is apart from the axis hole with on outside connecting rod (2) apart from equating, upper shaft hole connects center regulating rod (7), and lower shaft hole connects parallel rod (5).
8. auto-paralleling compasses according to claim 1, is characterized in that: there are two axis holes described center regulating rod (7) lower end, and the pitch-row of two axis holes equates with two hole pitch-rows on support (1).
9. auto-paralleling compasses according to claim 1, is characterized in that: the described screw rod with handwheel (8) is a long bolt, and there is a handwheel centre, and both sides screw thread is connected with two the nut switch blocks in left and right (3) respectively.
10. auto-paralleling compasses according to claim 1, it is characterized in that: when drawing minor radius bowlder, described center regulating rod (7) is by initial position upwards after fine setting, and the axis hole of center regulating rod (7) is less than the distance between two axis holes on parallel rod (5) upper/lower terminal with the distance between axis hole on corresponding support (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111754.XU CN203727054U (en) | 2014-03-13 | 2014-03-13 | Automatic parallel compasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111754.XU CN203727054U (en) | 2014-03-13 | 2014-03-13 | Automatic parallel compasses |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203727054U true CN203727054U (en) | 2014-07-23 |
Family
ID=51197157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420111754.XU Expired - Fee Related CN203727054U (en) | 2014-03-13 | 2014-03-13 | Automatic parallel compasses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203727054U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127357A (en) * | 2019-05-13 | 2019-08-16 | 河南天利热工装备股份有限公司 | A kind of lifter equipped with eccentric wheel structure |
| CN113002221A (en) * | 2021-04-07 | 2021-06-22 | 虎思远 | Be applied to mathematics teaching of education and teaching with supplementary teaching device |
| WO2022133723A1 (en) * | 2020-12-22 | 2022-06-30 | 苏州莫愁文化科技有限公司 | Dust suction device of calendering machine |
-
2014
- 2014-03-13 CN CN201420111754.XU patent/CN203727054U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110127357A (en) * | 2019-05-13 | 2019-08-16 | 河南天利热工装备股份有限公司 | A kind of lifter equipped with eccentric wheel structure |
| WO2022133723A1 (en) * | 2020-12-22 | 2022-06-30 | 苏州莫愁文化科技有限公司 | Dust suction device of calendering machine |
| CN113002221A (en) * | 2021-04-07 | 2021-06-22 | 虎思远 | Be applied to mathematics teaching of education and teaching with supplementary teaching device |
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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: 20140723 Termination date: 20150313 |
|
| EXPY | Termination of patent right or utility model |