CN213441810U

CN213441810U - Portable compasses with higher precision

Info

Publication number: CN213441810U
Application number: CN202021841466.1U
Authority: CN
Inventors: 黄金泽; 雷艳敏; 李伟喆; 冯志彬; 徐科; 张玉鑫
Original assignee: Changchun University
Current assignee: Changchun University
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-06-15
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a portable compasses with higher precision, which comprises a base, a connecting rod screw, a scale cross rod, a painting brush vertical rod, a fixing screw and a rubber sleeve, wherein the rubber sleeve is fixed at the tail end of the scale cross rod; the fixing screw is arranged at the joint of the painting brush vertical rod and the scale cross rod and used for fixing the painting brush vertical rod on the scale cross rod after the radius is determined so as to ensure that the painting brush cannot move relative to the scale cross rod and realize the accuracy of the radius; a sliding rail is fixedly arranged on the upper side of the scale cross rod and used for moving the painting brush vertical rod, and a nick is arranged in the middle of the painting brush vertical rod and is parallel to the lower end of the pen holder and used for accurately determining the radius; the middle concave part at one end of the base is conical and is used for wrapping the sharp fixed end of the compasses; an internal thread is arranged in the middle of the other end of the base and is in threaded connection with one end of a connecting rod screw. The utility model discloses a simple and easy novel compasses conveniently carry than traditional compasses, and the accuracy is high, convenient operation. And solves some dangers brought by the over sharp tip of the traditional compasses.

Description

Portable compasses with higher precision

Technical Field

The utility model relates to a compasses technical field specifically is a higher portable compasses of precision.

Background

The traditional compasses have some problems to solve:

1. the radius of the traditional compasses needs to be determined by comparing with a lattice ruler, so that the error in circle drawing is increased.

2. The more accurate the traditional compasses are, the sharper the tip of the traditional compasses are, the improper operation is easy to stab, the weight is larger, and the traditional compasses are not easy to carry.

3. The two-foot upright type is not easy to operate, the gravity center is difficult to master, the operation is not easy, the paper can be punctured when the tip is punctured on the paper, the position of the circle center is easy to be unstable, and the tip tilts.

SUMMERY OF THE UTILITY MODEL

(1) Solves the technical problem

Not enough to prior art, the utility model provides a higher portable compasses of precision has solved the partial technical problem that the background art provided.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a portable compasses with higher precision comprises a base, a connecting rod screw, a scale cross rod, a painting brush vertical rod, a fixing screw and a rubber sleeve, wherein the rubber sleeve is fixed at the tail end of the scale cross rod; the fixing screw is arranged at the joint of the painting brush vertical rod and the scale cross rod and used for fixing the painting brush vertical rod on the scale cross rod after the radius is determined so as to ensure that a painting brush cannot move relative to the scale cross rod and realize the accuracy of the radius; a sliding rail is fixedly arranged on the upper side of the scale cross rod and used for moving the painting brush vertical rod, and a nick is arranged in the middle of the painting brush vertical rod and is parallel to the lower end of the pen holder and used for accurately determining the radius; the middle concave part at one end of the base is conical and is used for wrapping the sharp fixed end of the compasses; an internal thread is arranged in the middle of the other end of the base and is in threaded connection with one end of a connecting rod screw.

Preferably, the base is made of transparent plastic, a small red dot is arranged at the center of the cone of the base and used for determining the circle center, and the outer portion of the base is a cylinder.

Preferably, the scale cross bar is provided with scales which are accurate to millimeter units and used for accurately drawing circles.

Preferably, the outer part of the connecting rod screw is a stepped cylinder.

Preferably, the scale cross rod is of a cubic structure, and one end of the scale cross rod is a cylinder.

Preferably, the material of the rubber sleeve is rubber.

(III) advantageous effects

Compared with the prior art, the utility model provides a higher portable compasses of precision possesses following beneficial effect:

through the transparent base of hemisphere, wrap up into the sharp-pointed stiff end of compasses itself, the sharp-pointed end corresponds the little red point at base center, realizes the accurate positioning to the centre of a circle through little red point. And the hemispherical base increases the contact area between the compasses and the paper surface, and is more favorable for the stability of the compasses.

The scale that has the precision to the millimeter on the scale horizontal pole that has the slide rail, and painting brush connecting rod department has the fixed screw, can fix the painting brush at a certain scale, conveniently realizes accurate drawing circle.

The utility model discloses a simple and easy novel compasses conveniently carry than traditional compasses, and the accuracy is high, and convenient operation is fit for masses and is suitable for. And the danger caused by the fact that the tip of the traditional compasses is too sharp is solved, and the protection is provided for applicable people.

Drawings

FIG. 1 is a structural diagram of a base of the portable compass with higher precision;

FIG. 2 is a structural diagram of a connecting rod screw of the portable compass with higher precision;

FIG. 3 is a structural diagram of a graduated cross bar of the portable compass with higher precision;

FIG. 4 is a diagram of a vertical drawing rod of a high-precision portable compass according to the present invention;

FIG. 5 is a structural view of a fixing screw of the portable compass with higher precision;

fig. 6 is a structural diagram of a rubber sleeve of the portable compasses with higher precision of the utility model.

In the figure: the painting brush comprises a base 1, a connecting rod screw 2, a scale cross rod 3, a painting brush vertical rod 4, a fixing screw 5 and a rubber sleeve 6.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-6, a portable compasses with high precision comprises a base 1, a connecting rod screw 2, a scale cross rod 3, a painting brush vertical rod 4, a fixing screw 5 and a rubber sleeve 6, wherein the rubber sleeve 6 is fixed at the tail end of the scale cross rod 3; a fixing screw 5 is arranged at the joint of the painting brush vertical rod 4 and the scale cross rod 3 and is used for fixing the painting brush vertical rod 4 on the scale cross rod 3 after the radius is determined so as to ensure that a painting brush cannot move relative to the scale cross rod 3 and realize the accuracy of the radius; a sliding rail is fixedly arranged on the upper side of the scale cross rod 3 and used for moving the painting brush vertical rod 4, and a nick is arranged in the middle of the painting brush vertical rod 4 and is parallel to the lower end of the pen holder and used for accurately determining the radius; the middle concave part at one end of the base 1 is conical and is used for wrapping the sharp fixed end of the compasses; an internal thread is arranged in the middle of the other end of the base 1 and is in threaded connection with one end of a connecting rod screw 2.

Further, the base 1 is made of transparent plastic, a small red dot is arranged at the center of the cone of the base 1 and used for determining the circle center, and a cylinder is arranged outside the base 1.

Furthermore, scales are arranged on the scale cross rod 3, are accurate to millimeter units, and are used for accurately drawing circles.

Further, the connecting rod screw 2 is a stepped cylinder outside.

Further, the scale cross rod 3 is of a cubic structure, and one end of the scale cross rod 3 is a cylinder.

Further, the material of the rubber sleeve 6 is rubber.

Through the hemispherical transparent base 1, wrap the sharp-pointed fixed end of the compass itself, the sharp-pointed end corresponds to the small red point at the center of the base 1, and the accurate positioning of the circle center is realized through the small red point. And the hemispherical base 1 increases the contact area between the compasses and the paper surface, and is more beneficial to the stability of the compasses.

The scale that has the precision to the millimeter on the scale horizontal pole 3 with slide rail, and painting brush scale horizontal pole 3 departments have the fixed screw, can fix the painting brush at a certain scale, conveniently realize the accurate circle of drawing.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The portable compasses with higher precision are characterized by comprising a base (1), a connecting rod screw (2), a scale cross rod (3), a painting brush vertical rod (4), a fixing screw (5) and a rubber sleeve (6), wherein the rubber sleeve (6) is fixed at the tail end of the scale cross rod (3); a fixing screw (5) is arranged at the joint of the painting brush vertical rod (4) and the scale transverse rod (3) and used for fixing the painting brush vertical rod (4) on the scale transverse rod (3) after the radius is determined so as to ensure that the painting brush cannot move relative to the scale transverse rod (3) and realize the accuracy of the radius; a sliding rail is fixedly arranged on the upper side of the scale cross rod (3) and used for moving the painting brush vertical rod (4), and a nick for accurately determining the radius is arranged in the middle of the painting brush vertical rod (4) and is parallel to the lower end of the pen holder; the middle concave part at one end of the base (1) is conical and is used for wrapping the sharp fixed end of the compasses; the middle of the other end of the base (1) is provided with an internal thread, and the internal thread is in threaded connection with one end of a connecting rod screw (2).

2. The portable compasses of claim 1, wherein said base (1) is a transparent plastic, the center of the cone of said base (1) is provided with a small red dot for determining the center of the circle, and the outside of said base (1) is a cylinder.

3. The portable compasses of claim 1, wherein said graduated cross-bar (3) is graduated to a millimeter unit for accurate circle drawing.

4. The portable compasses of claim 1, wherein said connecting rod screw (2) is externally a stepped cylinder.

5. The portable compasses of claim 1, wherein said scale bar (3) is cubic, and one end of said scale bar (3) is cylindrical.

6. The portable compasses of claim 1, wherein said rubber sleeve (6) is made of rubber.