CN209920857U

CN209920857U - Millstone compasses

Info

Publication number: CN209920857U
Application number: CN201721879230.5U
Authority: CN
Inventors: 刘涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-12-28
Filing date: 2017-12-28
Publication date: 2020-01-10
Anticipated expiration: 2027-12-28

Abstract

The utility model discloses a mill compasses, which comprises a rotating shaft, the top welding of pivot has the centre of a circle sight, the bottom central point of pivot puts the welding and has the needle point, the welding has the chi arm on one side outer wall of pivot, and opens on one side outer wall of chi arm and have the spout, the welding has two parallel first slide rails on the bottom outer wall of spout, and the equal sliding connection in top of two first slide rails has a pulley, two the top welding of pulley has same sliding block, and the welding has the pen clip on one side outer wall of sliding block, the top welding of sliding block has the fixed block. The utility model discloses enough make fine the fixing on the paper of device, avoid it to slide, improved the mapping effect of device, can be stable clip the painting brush and carry out the mapping, improved the security of device, can adjust the position of dead lever to the control pen clip slides, adjusts the radius of mapping, has improved the regulating power of device, and it is simple to adjust, convenient operation, and the practicality is strong.

Description

Millstone compasses

Technical Field

The utility model relates to a learning tools technical field especially relates to a mill compasses.

Background

The invention of compasses can be traced back to the Chinese summer dynasty at first, the 'Shiji' summer book records 'Dayu' for water treatment 'left standard rope and right standard distance', the 'rule and the' moment 'are in the oracle bone text 15 th century before the Gongyuan, and the' rule 'is called at that time, namely the compasses of this day, the' Zhou Li 'chessman' records: "the craftsman establishes the country, hangs on the ground, and puts to hang, and looks at the scene. For rule, identify the scene of sunrise and the scene of sunrise. Day refers to the scene in the middle of the day, and the polar star in night. The Shandong Jiaxiang Wu Lianwa brick sculpture is arranged in the Shandong Jiaxiang Wuliang temple, wherein the Yuanwa executes the rule, Fuxi executes the moment, the rule is an ancient beam rule, and the shape of the ancient beam rule is similar to that of the oracle 'deca'. Drawing tools for drawing circles. Two feet are provided, the upper ends of the two feet are hinged, and the lower ends of the two feet can be freely separated or folded, so that the size of the radius of the drawn arc can be adjusted. The tail end of one foot is a needle point, and the tail end of the other foot can be filled with a foot for drawing pencil lines or ink lines. The compasses are provided with an extension rod, so that a larger circle can be drawn. The existing compasses are easy to loosen during drawing, are poor in fixing effect and influence the drawing effect, so that the millstone compasses are needed urgently.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a millstone compasses.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a millstone compass comprises a rotating shaft, wherein a circle center sighting device is welded at the top of the rotating shaft, a needle point is welded at the central position of the bottom of the rotating shaft, a ruler arm is welded on the outer wall of one side of the rotating shaft, a sliding chute is formed in the outer wall of one side of the ruler arm, two parallel first sliding rails are welded on the outer wall of the bottom of the sliding chute, pulleys are connected to the tops of the two first sliding rails in a sliding mode, the tops of the two pulleys are welded with the same sliding block, a pen clip is welded on the outer wall of one side of the sliding block, a fixed block is welded at the top of the sliding block, an adjusting device is arranged at the top of the fixed block and comprises a second sliding rail, the second sliding rail is welded at the top of the fixed block, and a second hinge is fixed on the outer wall of one side opposite, two one side that the dead lever was kept away from to the second hinge all articulates there is the regulation pole, and the one end that the second hinge was kept away from to two regulation poles all has first hinge through the bolt fastening, and just two first hinges keep away from the one end welding of adjusting the pole and have same connecting block, the top welding of connecting block has first spring, the top welding of first spring has according to the briquetting, and bonds according to the top of briquetting and has the rubber pad.

Preferably, the outer walls of two opposite sides of the sliding groove are provided with fixing holes distributed at equal intervals, and the height of each fixing hole is equal to that of each fixing rod.

Preferably, the length of the adjusting rod is greater than that of the fixing rod, and the specification of the fixing rod is matched with that of the fixing hole.

Preferably, the outer walls of two opposite sides of the outer wall of the top of the sliding groove are welded with limiting blocks, and the distance between the two limiting blocks is smaller than the length of the connecting block.

Preferably, the outer wall of one side opposite to the adjusting rod is welded with a second spring close to the middle, and one end of the second spring far away from the adjusting rod is welded with the connecting block.

Preferably, the diameter of the first spring is two to four times of the diameter of the second spring, and the length of the first spring is greater than the distance from the connecting block to the limiting block.

The utility model has the advantages that:

1. the arrangement of the needle point and the circle center sighting device can ensure that the device is well fixed on paper, so that the device is prevented from sliding, and the drawing effect of the device is improved.

2. The arrangement of the ruler arm and the pen clip can stably clamp the painting brush for drawing, and the safety of the device is improved.

3. The position of the fixed rod can be adjusted through the pressing block, the first spring, the connecting block, the adjusting rod and the second sliding rail, so that the pen clip is controlled to slide, the radius of a drawing is adjusted, the adjusting capacity of the device is improved, the adjusting is simple, the operation is convenient, and the practicability is high.

Drawings

FIG. 1 is a schematic structural view of a millstone compass provided by the present invention;

fig. 2 is a schematic sectional view of the arm of the millstone compass.

In the figure: the device comprises a needle point 1, a rotating shaft 2, a circle center sighting device 3, a ruler arm 4, an adjusting device 5, a pen clip 6, a sliding chute 7, a first sliding rail 8, a pulley 9, a fixing block 10, a fixing hole 11, a limiting block 12, a pressing block 13, a first spring 14, a connecting block 15, an adjusting rod 16, a fixing rod 17 and a second sliding rail 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, a millstone compasses comprises a rotating shaft 2, a circle center sighting device 3 is welded at the top of the rotating shaft 2, a needle point 1 is welded at the center position of the bottom of the rotating shaft 2, a ruler arm 4 is welded on the outer wall of one side of the rotating shaft 2, a sliding chute 7 is formed in the outer wall of one side of the ruler arm 4, two parallel first sliding rails 8 are welded on the outer wall of the bottom of the sliding chute 7, pulleys 9 are connected to the tops of the two first sliding rails 8 in a sliding manner, the tops of the two pulleys 9 are welded with the same sliding block, a pen clip 6 is welded on the outer wall of one side of the sliding block, a fixed block 10 is welded at the top of the sliding block, an adjusting device 5 is arranged at the top of the fixed block 10, the adjusting device 5 comprises a second sliding rail 18, the second sliding rail 18 is welded at the top of the fixed block 10, two fixed, one side that dead lever 17 was kept away from to two second hinges all articulates there is regulation pole 16, and two one ends of adjusting pole 16 and keeping away from the second hinge all have first hinge through the bolt fastening, and two first hinges keep away from the one end welding of adjusting pole 16 and have same connecting block 15, and the top welding of connecting block 15 has first spring 14, and the top welding of first spring 14 has according to briquetting 13, and has the rubber pad according to the top bonding of briquetting 13.

The utility model discloses in, all open the fixed orifices 11 that have the equidistance and distribute on the relative both sides outer wall of spout 7, and the height of fixed orifices 11 equals with the height of dead lever 17, the length of adjusting pole 16 is greater than the length of dead lever 17, and the specification of dead lever 17 and the specification looks adaptation of fixed orifices 11, all weld on the relative both sides outer wall of spout 7 top outer wall has stopper 12, and the interval between two stoppers 12 is less than the length of connecting block 15, it has the second spring all to weld near the intermediate position to adjust the relative one side outer wall of pole 16, and the second spring keeps away from the one end of adjusting pole 16 and welds with connecting block 15, the diameter of first spring 14 is two to four times of second spring diameter, and the length of first spring 14 is greater than the distance of connecting block 15 to stopper 12.

The working principle is as follows: during the use, fix the device on the paper fine through needle point 1 and centre of a circle sight 3, avoid it to slide, then through the stable painting brush of cliping of chi arm 4 and pen clip 6, press down when needing to adjust the mapping radius and press down pressing block 13 and make first spring 14 extrusion connecting block 15, then drive regulation pole 16 and push down, make dead lever 17 slide at second slide rail 18 and break away from the fixed orifices, then slide through first slide rail 8 and pulley 9 control pen clip 6, adjust the radius of mapping, loosen pressing block 13 after adjusting and make dead lever 17 insert fixed orifices 11 and fix, then map.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The millstone compasses comprise a rotating shaft (2) and are characterized in that a circle center sighting device (3) is welded at the top of the rotating shaft (2), a needle point (1) is welded at the center of the bottom of the rotating shaft (2), a ruler arm (4) is welded on the outer wall of one side of the rotating shaft (2), a sliding groove (7) is formed in the outer wall of one side of the ruler arm (4), two parallel first sliding rails (8) are welded on the outer wall of the bottom of the sliding groove (7), pulleys (9) are connected to the tops of the two first sliding rails (8) in a sliding manner, the top of each pulley (9) is welded with the same sliding block, a pen clip (6) is welded on the outer wall of one side of the sliding block, a fixed block (10) is welded at the top of the sliding block, an adjusting device (5) is arranged at the top of the fixed block (10), and, second slide rail (18) welding is at the top of fixed block (10), two dead lever (17) of top sliding connection of second slide rail (18), and all have the second hinge, two through the bolt fastening on the relative one side outer wall of two dead lever (17) one side that dead lever (17) were kept away from to the second hinge all articulates there is regulation pole (16), and two one end of keeping away from the second hinge of adjusting pole (16) all have first hinge through the bolt fastening, and the one end welding of adjusting pole (16) is kept away from to two first hinges has same connecting block (15), the top welding of connecting block (15) has first spring (14), the top welding of first spring (14) has and presses piece (13), and presses the top bonding of piece (13) to have the rubber pad.

2. The millstone compasses of claim 1, wherein the outer walls of two opposite sides of the sliding chute (7) are respectively provided with fixing holes (11) which are distributed equidistantly, and the height of the fixing holes (11) is equal to that of the fixing rods (17).

3. The millstone compasses of claim 1, wherein the length of the adjusting rod (16) is greater than the length of the fixing rod (17), and the specification of the fixing rod (17) is adapted to the specification of the fixing hole (11).

4. The millstone compasses of claim 1, wherein the outer walls of two opposite sides of the outer wall at the top of the sliding chute (7) are welded with limit blocks (12), and the distance between the two limit blocks (12) is less than the length of the connecting block (15).

5. The millstone compasses of claim 1, wherein the outer wall of one side opposite to the two adjusting rods (16) is welded with a second spring near the middle position, and one end of the second spring far away from the adjusting rods (16) is welded with the connecting block (15).

6. A disc compass according to claim 1, wherein the diameter of the first spring (14) is two to four times the diameter of the second spring, and the length of the first spring (14) is greater than the distance from the connecting block (15) to the stop block (12).