Two-leg parallel compass with single-leg horizontal stretching and retracting function

A single-legged, horizontal technology, applied in the field of stationery, can solve problems such as uneven line drawing, easily damaged paper drawing, and incomplete outer edges, etc., to achieve smooth and uniform line drawing process, easy radius distance measurement, and cost-effectiveness. Good image quality

Pending Publication Date: 2019-03-22
白宇
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems are: 1. The gravity center of gravity of the operation is in the middle of the two legs, and the fixed position of the legs of the center of gravity needs to be realized by artificial dynamic adjustment. When the radius is small or large, the control is difficult and often cau

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-leg parallel compass with single-leg horizontal stretching and retracting function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] In conjunction with the accompanying drawings, the present invention is described in further detail below:

[0013] like figure 1 As shown, the fixed leg 1 and the movable leg 2 of the compass of the present invention are vertically and parallelly juxtaposed. It is dynamically connected as a whole by the hinge rod 3 through the hinge shaft 4. The upper end of the fixed leg 1 is threaded to connect the rotating handle 5, and the lower end taper tube fixes the positioning pin 6, and the three are arranged on a straight line in the forward direction. The lower end of the moving leg 2 is provided with a detachable and replaceable brush head, and the two ends of the fixed leg and the moving leg 2 are provided with hinge shaft holes with equal hole spacing. The positioning pin 6 and the lower end of the brush head 7 are on the same plane. The hinge connecting rod 3 is connected and combined by the hinge shaft 4 with the concave-convex thick and thin faces to form a square ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a two-leg parallel compass with a single-leg horizontal stretching and retracting function. The compass comprises a fixed leg, a moving leg, hinge links, hinge shafts, a positioning pin and a brush head, and is characterized in that the fixed leg and the moving leg are vertically arranged in parallel, the number of the hinge links is four, the left and right sides are set tohave different thicknesses by four diagonal lines, every two hinge links are buckled to be square to form two opposite apex angles, and the two ends of the fixed leg and the moving leg are connectedinto a dynamic whole by the hinge shafts. Compared with the prior art, the compass has the advantages that the fixed leg is always in a vertical state during use, the gravity center of gravity is stable and easy to control, the moving leg vertically and horizontally stretches and retracts, the angle of the brush head is not affected by the radius, the lines drawn are even and smooth, the circle orarc is more stable, easy to control and attractive. Therefore, the compass has good application and promotion value.

Description

1. Technical field: [0001] The invention relates to stationery, in particular to a compasses with two parallel legs and one leg that expands and retracts horizontally. 2. Background technology: [0002] Compasses, whose basic function is to draw circles and arcs, are commonly used stationery for studying and working in related fields. The compasses in the prior art take the joints with damping resistance at the tops of the two legs as the axis, and the two legs move outwards or inwards in fan-shaped synchronously to complete drawing operations with different radii. The main problems are: 1. The gravity center of gravity of the operation is in the middle of the two legs, and the fixed position of the legs of the center of gravity needs to be realized by artificial dynamic adjustment. When the radius is small or large, the control is difficult and often causes the fixing pin to slide Or shift, easy to damage the paper or to the failure of drawing. 2. The tip of the brush is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B43L9/02B43L9/16
CPCB43L9/025B43L9/16
Inventor 白宇马建衡吴同烨
Owner 白宇
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap