CN110901265A

CN110901265A - Screw rod scale compasses

Info

Publication number: CN110901265A
Application number: CN201811078291.0A
Authority: CN
Inventors: 靳宇阳; 孙富兵; 靳宇哲
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-09-14
Filing date: 2018-09-14
Publication date: 2020-03-24

Abstract

The invention discloses a screw rod scale compasses, which consists of a handle, a roller bearing, an ejector pin sleeve, a scale cross rod, a screw cap, a pen holder adjusting knob and a pen holder, wherein the roller bearing is arranged at the bottom end of the handle. The ejector pin is arranged at the bottom of the roller bearing. The thimble sleeve is arranged at the bottom of the roller bearing, and the edge of the bottom end of the thimble sleeve is provided with a rubber friction ring. The scale horizontal pole set up on the handle, the handle can be accomodate in the scale horizontal pole, mark scale on the scale horizontal pole. The screw rod is arranged on the scale cross rod and can rotate. The nut is arranged on the screw rod, the height of the nut is the same as the height of the groove of the scale cross rod, and the nut can only transversely translate when the screw rod rotates. The penholder adjusting knob is arranged on the penholder. The penholder is arranged on the nut and can move horizontally along with the nut, and the penholder can be accommodated in the scale cross rod. The invention has the advantages that: simple structure, low manufacturing cost, convenient use and high accuracy.

Description

Screw rod scale compasses

Technical Field

The invention relates to school supplies, in particular to a drawing assisting device.

Technical Field

Compasses sold in the market at present are various, have horizontal pole compasses, have ellipsograph and so on, have not seen scale and compasses simultaneous action and utilize the screw rod scale compasses that the gyro wheel bearing structure can realize the stepless regulation of pen-holder yet.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides the screw rod graduated compasses which are unique in structure, quick to use and capable of being directly used for measuring.

The purpose of the invention is realized by the following technical scheme. The pen holder is characterized in that the roller bearing is arranged at the bottom end of the handle. The ejector pin is arranged at the bottom of the roller bearing. The thimble sleeve is arranged at the bottom of the roller bearing, and the edge of the bottom end of the thimble sleeve is provided with a rubber friction ring. The scale horizontal pole set up on the handle, the handle can be accomodate in the scale horizontal pole, mark scale on the scale horizontal pole. The screw rod is arranged on the scale cross rod and can rotate. The nut is arranged on the screw rod, the height of the nut is the same as the height of the groove of the scale cross rod, and the nut can only transversely translate when the screw rod rotates. The penholder adjusting knob is arranged on the penholder. The penholder is arranged on the nut and can move horizontally along with the nut, and the penholder can be accommodated in the scale cross rod.

Compared with the prior art, the invention has the advantages that:

1. the structure is simple;

2. the manufacture is convenient;

3. the manufacturing cost is low;

4. the accuracy is high;

5. is convenient to use.

Drawings

Fig. 1 is a front expanded view of the present invention.

Fig. 2 is a reverse side expanded view of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

In the figure, the screw rod scale compasses comprise a handle 1, a roller bearing 2, a thimble 3, a thimble sleeve 4, a scale cross rod 5, a screw rod 6, a screw cap 7, a penholder adjusting knob 8 and a penholder 9, and are characterized in that the roller bearing 2 is arranged at the bottom end of the handle 1 and has the function of enabling the compasses to rotate more stably in use. The thimble 3 is arranged at the bottom of the roller bearing 2. The thimble sleeve 4 is arranged at the bottom of the roller bearing 2, and the edge of the bottom end is provided with a rubber friction ring, which has the function of preventing the thimble 3 from deviating when the thimble structure is used. The scale cross rod 5 is arranged on the handle 1, the handle 1 can be contained in the scale cross rod 5, and scales are marked on the scale cross rod 5, so that the scale cross rod has the advantages of higher precision and convenience in containing when in use. The screw rod 6 is arranged on the scale cross rod 5 and can rotate. The nut 7 is arranged on the screw rod 6, the height of the nut is the same as the groove height of the scale cross rod 5, when the screw rod 6 rotates, the nut 7 can only transversely translate, and the function of the invention is to realize the stepless adjustment of the pen holder 9 when the pen is used. The penholder adjusting knob 8 is arranged on the penholder 9 and has the function that the penholder 9 can be contained in the scale cross rod 5. The penholder 9 is arranged on the screw cap 7 and can move horizontally along with the screw cap 7, and the penholder 9 can be contained in the scale cross rod 5 when not in use.

The use method of the screw scale compasses comprises the following steps: when the pen is used, the pen holder 9 and the handle 1 are perpendicular to a paper surface as shown in figure 1, the handle 1 is rotated to complete a circle, and the screw 6 is rotated to adjust the position of the pen holder 9.

Claims

1. The compasses with the scales on the screw rod are composed of a handle, a roller bearing, a thimble sleeve, a scale cross rod, the screw rod, a screw cap, a pen rod adjusting knob and a pen rod.

2. The screw scale compass of claim 1, wherein the thimble is disposed at the bottom of the roller bearing.

3. The screw scale compasses of claim 1, wherein said thimble sleeve is disposed at the bottom of the roller bearing and has a rubber friction ring at the bottom end edge.

4. The screw scale compasses of claim 1, wherein the scale bar is disposed on the handle, the handle is receivable in the scale bar, and the scale bar is marked with the scale.

5. The screw scale compasses of claim 1, wherein said screw is rotatably mounted on the scale rail.

6. The screw scale compasses of claim 1, wherein said nut is disposed on the screw at a height equal to the height of the groove of the scale rail, and the nut is only capable of lateral translation when the screw is rotated.

7. The screw scale compasses of claim 1, wherein said barrel adjustment knob is disposed on the barrel.

8. The screw scale compasses of claim 1, wherein the pen holder is disposed on the nut and can translate with the nut, and the pen holder can be received in the scale rail.