CN213056523U - Indicating value drawing compasses with rotatable pointer and dial based on meshing gear - Google Patents
Indicating value drawing compasses with rotatable pointer and dial based on meshing gear Download PDFInfo
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- CN213056523U CN213056523U CN202021482518.0U CN202021482518U CN213056523U CN 213056523 U CN213056523 U CN 213056523U CN 202021482518 U CN202021482518 U CN 202021482518U CN 213056523 U CN213056523 U CN 213056523U
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- support leg
- turntable
- hobbing
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000005096 rolling process Methods 0.000 description 1
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- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention discloses a indicating value plotting compasses based on a pointer and a dial of a meshing gear, which comprises: the device comprises a left support leg, a right support leg, a drawing pencil, a fixing needle, a positioning stop block, left support leg hobbing, right support leg hobbing, a pointer gear, a turntable gear, a pointer, a turntable, a knob and an outer frame. The length of the pencil can be determined by the positioning stop blocks of the left support leg and the right support leg; the pointer rod and the pointer are fixedly connected with the pointer gear and synchronously rotate along with the pointer rod and the pointer; the rotary table is fixedly connected to the rotary table gear and synchronously rotates along with the rotary table gear; the rotary disc is provided with a scale indicating the length of the radius. The invention drives the pointer and the turntable which are fixedly connected with the gear to rotate relatively through the meshing of the gear to indicate the length of the drawing radius, thereby not only effectively solving the problem of complicated radius determination during drawing of a circle and improving the efficiency and the accuracy of drawing, but also having simple structure, simple operation, small volume and easy storage.
Description
The technical field is as follows:
the invention relates to a plotting compass, in particular to a indicating value plotting compass with a rotatable pointer and a rotatable dial based on a meshing gear.
Background art:
with the improvement of the overall education level of the society, the compasses become indispensable tools for people to study, draw and the like, but the traditional compasses only enable two support legs to be hinged together at the top, so that a circle can be drawn only and a circle with a certain radius length cannot be drawn conveniently. If a circle with a specified radius length is desired to be drawn, the length between the pencil and the fixing pin is generally determined, the radius length is generally measured by a straight ruler, and then the drawing area is returned to draw the desired circle.
The invention content is as follows:
in view of the disadvantages in the above, the present invention aims to draw a circle with a specified radius length by rotating two legs to the desired radius length according to the pointer indication when drawing the circle.
Therefore, the invention adopts the following technical scheme: a indicating value drawing compass based on a pointer and a dial of a meshing gear can rotate mainly comprises a drawing pencil, a left support leg, an outer frame, a rotary disc, a knob, a pointer, rotary disc scales, a screw, a right support leg, a positioning stop block, a support leg positioning hole, left support leg hobbing, right support leg hobbing, a pointer rod, a pointer gear, a rotary disc gear and a fixing needle. The positioning stop blocks are fixedly connected to the left support leg and the right support leg respectively and used for determining the length of the pencil so as to avoid drawing errors caused by improper length; the left support leg and the right support leg complete relative rotation through the meshing of the left support leg hobbing and the right support leg hobbing; the left support leg hobbing and the right support leg hobbing penetrate through the support leg positioning hole through a screw to realize connection; the left support leg hobbing is also meshed with the pointer gear, and the pointer gear, the pointer rod fixedly connected with the pointer gear and the pointer are driven to synchronously rotate while the left support leg rotates; the right support leg hobbing is also meshed with the turntable gear, and the right support leg rotates and simultaneously drives the turntable fixedly connected with the turntable gear and the turntable gear to synchronously rotate; the turntable and the pointer rotate relatively through the rotation of the turntable gear and the pointer gear respectively; the relative rotation between the turntable and the pointer displays the radius distance between the fixed needle and the drawing pencil through the scale of the turntable; the outer frame passes through the support leg positioning holes through screws to realize positioning between the outer frame and the left support leg and between the outer frame and the right support leg; the outer frame is fixedly connected with the knob at the top into a whole. The left support pin hobbing, the pointer gear, the right support pin hobbing and the turntable gear form a gear transmission mechanism of the compasses, and the pointer and the turntable rotate relatively to form a value display mechanism of the compasses.
The beneficial effects obtained by the invention are as follows: the process of making a circle according to the specified radius length is realized, and the radius of the drawn circle can be determined only by reading the pointer reading of the turntable. In particular, when the circle with a certain unknown radius is known, the compasses can also be used as a measuring tool to achieve the purpose of estimating the radius of the circle.
Description of the drawings:
FIG. 1 is a schematic view of the general structure of the compasses;
FIG. 2 is a schematic diagram of internal gear meshing;
FIG. 3 is a mating view of the left and right legs;
FIG. 4 is a detail view of the pointer gear;
FIG. 5 is a detail view of the carousel gear;
FIG. 6 is a view of the pointer in cooperation with the dial;
FIG. 7 is a top view of the fit between the gears;
the meaning of each symbol in the figure is: 1. the drawing pencil comprises a drawing pencil body, 2 parts of a left support leg, 3 parts of an outer frame, 4 parts of a rotary disc, 5 parts of a knob, 6 parts of a pointer, 7 parts of rotary disc scales, 8 parts of a screw, 9 parts of a right support leg, 10 parts of a positioning stop dog, 11 parts of a support leg positioning hole, 12 parts of left support leg hobbing, 13 parts of right support leg hobbing, 14 parts of a pointer rod, 15 parts of a pointer gear, 16 parts of a rotary disc gear, 17 parts of a fixing needle.
The specific implementation mode is as follows:
the invention is illustrated by way of example in the following figures:
as shown in figures 1-7, the indicating value plotting compasses based on the rotatable pointer and dial of the meshing gear mainly comprise a plotting pencil (1), a left support leg (2), an outer frame (3), a turntable (4), a knob (5), a pointer (6), turntable scales (7), a screw (8), a right support leg (9), a positioning stop block (10), a support leg positioning hole (11), left support leg hobbing (12), right support leg hobbing (13), a pointer rod (14), a pointer gear (15), a turntable gear (16) and a fixing needle (17). The positioning stop block (10) is fixedly connected to the left support leg (2) and the right support leg (9) respectively and used for determining the length of the pencil so as to avoid drawing errors caused by improper length; the left support leg (2) and the right support leg (9) complete relative rotation through the meshing of the left support leg hobbing (12) and the right support leg hobbing (13); the left support leg hobbing (12) and the right support leg hobbing (13) penetrate through the support leg positioning hole (11) through a screw (8) to realize connection; the left support leg hobbing (12) is also meshed with the pointer gear (15), and the pointer gear (15) and the pointer rod (14) and the pointer (6) which are fixedly connected with the pointer gear (15) are driven to synchronously rotate while the left support leg (2) rotates; the right support leg hobbing (13) is also meshed with the turntable gear (16), and the right support leg (9) drives the turntable gear (16) and the turntable (4) fixedly connected with the turntable gear (16) to synchronously rotate while rotating; the rotary disc (4) and the pointer (6) rotate relatively through the rotation of the rotary disc gear (16) and the pointer gear (15) respectively; the relative rotation between the turntable (4) and the pointer (6) displays the radius distance between the fixing needle (17) and the drawing pencil (1) through the scale (7) of the turntable; the outer frame (3) penetrates through the supporting leg positioning hole (11) through a screw (8) to realize positioning between the outer frame and the left supporting leg (2) and between the outer frame and the right supporting leg (9); the outer frame (3) is fixedly connected with the knob (5) at the top into a whole. The left leg hobbing (12), the pointer gear (15), the right leg hobbing (13) and the turntable gear (16) form a gear transmission mechanism of the compass, and the pointer (6) and the turntable (4) rotate relatively to form a value display mechanism of the compass.
When a circle needs to be drawn, the radius of the circle to be drawn is read out according to the requirement, the left support leg (2) and the right support leg (9) are rotated, relative rolling is realized by mutual matching of the left support leg hobbing (12) and the right support leg hobbing (13), the left support leg (2) rotates and simultaneously drives the pointer gear (15) to rotate, the right support leg (9) rotates and simultaneously drives the turntable gear (16) to rotate, and the numerical value indicated by the rotation of the pointer is the required radius length only by rotating the two support legs. Then the fixed needle (17) is fixed at the position of the circle center, and the knob (5) is grasped by hands to rotate the compasses for a circle, so that the drawing of the circle can be completed.
Particularly, the reading of the rotating disc (4) and the pointer (6) can also be used as a tool for measuring the radius of the circle, and the radius length can be accurately estimated even if the radius length cannot be accurately read.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner.
Claims (6)
1. A indicating value plotting compasses based on a pointer and a dial of a meshing gear can be rotated, which mainly comprises a plotting pencil (1), a left support leg (2), an outer frame (3), a turntable (4), a knob (5), a pointer (6), a turntable scale (7), a screw (8), a right support leg (9), a positioning stop block (10), a support leg positioning hole (11), a left support leg hobbing (12), a right support leg hobbing (13), a pointer rod (14), a pointer gear (15), a turntable gear (16) and a fixing needle (17); the positioning stop block (10) is fixedly connected to the left support leg (2) and the right support leg (9) respectively and used for determining the length of the pencil so as to avoid drawing errors caused by improper length; the left support leg (2) and the right support leg (9) complete relative rotation through the meshing of the left support leg hobbing (12) and the right support leg hobbing (13); the left support leg hobbing (12) and the right support leg hobbing (13) penetrate through the support leg positioning hole (11) through a screw (8) to realize connection; the left support leg hobbing (12) is also meshed with the pointer gear (15), and the pointer gear (15) and the pointer rod (14) and the pointer (6) which are fixedly connected with the pointer gear (15) are driven to synchronously rotate while the left support leg (2) rotates; the right supporting leg hobbing (13) is also meshed with the turntable gear (16), and the right supporting leg (9) drives the turntable gear (16) and the turntable (4) fixedly connected with the turntable gear (16) to synchronously rotate while rotating; the rotary disc (4) and the pointer (6) rotate relatively through the rotation of the rotary disc gear (16) and the pointer gear (15) respectively; the relative rotation between the turntable (4) and the pointer (6) displays the radius distance between the fixing needle (17) and the drawing pencil (1) through the scale (7) of the turntable; the outer frame (3) penetrates through the supporting leg positioning hole (11) through a screw (8) to realize positioning between the outer frame and the left supporting leg (2) and between the outer frame and the right supporting leg (9); the outer frame (3) is fixedly connected with the knob (5) at the top into a whole.
2. A meshing gear-based pointer and scale rotatable indication plotting compass according to claim 1, wherein: the left leg hobbing (12) is meshed with the right leg hobbing (13) and is simultaneously meshed with the pointer gear (15), and the right leg hobbing (13) is meshed with the left leg hobbing (12) and is simultaneously meshed with the turntable gear (16).
3. A meshing gear-based pointer and scale rotatable indication plotting compass according to claim 1, wherein: the pointer rod (14) is fixedly connected with the pointer (6) and is also fixedly connected with the pointer gear (15), the pointer gear (15) rotates to drive the pointer (6) to synchronously rotate, the turntable (4) is fixedly connected with the turntable gear (16), and the turntable gear (16) rotates to drive the turntable (4) to synchronously rotate.
4. A meshing gear-based pointer and scale rotatable indication plotting compass according to claim 1, wherein: the rotary disc (4) is provided with scales for determining the radius length of a circle to be made.
5. A meshing gear-based pointer and scale rotatable indication plotting compass according to claim 1, wherein: the pointer (6) is used for indicating the radius length of a circle to be made, the pointer (6) and the rotary disc (4) are in relative motion, and the pointer (6) can be correctly indicated through the meshing relationship between the gears.
6. A meshing gear-based pointer and scale rotatable indication plotting compass according to claim 1, wherein: the left supporting leg (2) and the right supporting leg (9) are respectively provided with a positioning stop block (10) for determining the proper pencil length and the position of the circle center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021482518.0U CN213056523U (en) | 2020-07-24 | 2020-07-24 | Indicating value drawing compasses with rotatable pointer and dial based on meshing gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021482518.0U CN213056523U (en) | 2020-07-24 | 2020-07-24 | Indicating value drawing compasses with rotatable pointer and dial based on meshing gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213056523U true CN213056523U (en) | 2021-04-27 |
Family
ID=75577439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021482518.0U Expired - Fee Related CN213056523U (en) | 2020-07-24 | 2020-07-24 | Indicating value drawing compasses with rotatable pointer and dial based on meshing gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213056523U (en) |
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2020
- 2020-07-24 CN CN202021482518.0U patent/CN213056523U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210427 |