CN203623225U

CN203623225U - Engineering drawing compass

Info

Publication number: CN203623225U
Application number: CN201320849148.3U
Authority: CN
Inventors: 付淑珍
Original assignee: Suzhou Aoran Commodity Co Ltd
Current assignee: Suzhou Aoran Commodity Co Ltd
Priority date: 2013-12-20
Filing date: 2013-12-20
Publication date: 2014-06-04
Anticipated expiration: 2023-12-20

Abstract

The utility model relates to an engineering drawing compass. The engineering drawing compass comprises a rotary shaft, a fastener, a rotary pin and a center pin, wherein the rotary shaft is fixed to the upper end of the fastener; the upper end of the rotary pin and the upper end of the center pin are meshed and connected through a gear and are fixed to the lower end of the fastener; the bottom end of the rotary pin is fixedly provided with a round pen clamp through a fastening screw; the pen clamp can vertically rotate; limit pieces are vertically arranged on the inner wall of the pen clamp; the open end of the pen clamp can adjust the size of the pen clamp through a bolt. The engineering drawing compass not only can clamp and hold an ordinary round refill, but also can clamp and hold a flat slate pencil and meet the different requirements in the actual engineering; meanwhile, as scale marks are arranged in the center pin, the engineering drawing compass can be used as a ruler, various functions are achieved, and operation is easy.

Description

A kind of engineering drawing compass

Technical field:

The utility model relates to a kind of compasses, relates in particular a kind of engineering drawing compass.

Background technology:

Compasses are a kind of for drawing the instrument of circle or circular arc, and in engineering reality, in many situations, need to use slate pencil setting-out or draw circular arc, general compasses are only applicable to clamp circular pen core, cannot clamp flat-shaped slate pencil, and, in engineering, also usually use general pen core to draw circular arc, now need one can clamp slate pencil, also can meet the compasses of the common pen core draw circles arc of clamping, save manufacturing cost, simple to operate.

Utility model content:

The purpose of this utility model is for the deficiencies in the prior art part, and a kind of engineering drawing compass is provided, and can clamp common circular pen core, also can clamp flat-shaped slate pencil, meets the different needs in engineering reality, diverse in function, simple to operate.

Technology solution of the present utility model is as follows:

A kind of engineering drawing compass, comprises rotating shaft, securing member, rotation pin and centre pin, it is characterized in that: described rotating shaft is fixed on the upper end of securing member, and the upper end of rotation pin and centre pin is connected with a joggle by gear, and is fixed on the lower end of securing member; A circular pen clip is fixed by screw in the bottom of described rotation pin, and pen clip can rotate up and down; Described pen clip inwall is vertically provided with banking stop, and the openend of pen clip is by the adjustable pen clip size of bolt.

As improvement, described centre pin is provided with graduation mark, and its bottom clamps the upper end that is connected to pilot pin.

As improvement, described banking stop is four, and four banking stops form the groove suitable with slate pencil.

The beneficial effects of the utility model are:

The utility model can clamp common circular pen core, also can clamp flat-shaped slate pencil, meets the different needs in engineering reality, and centre pin is provided with graduation mark simultaneously, can serve as ruler and use, diverse in function, simple to operate.

Accompanying drawing explanation:

Below in conjunction with accompanying drawing, the utility model is described further.

The specific embodiment:

The following stated is only preferred embodiment of the present utility model, not scope of the present utility model is limited.

Embodiment, Fig. 1 is structural representation of the present utility model; Fig. 2 is right view of the present utility model; Fig. 3 is the structural representation of pen clip.

With reference to accompanying drawing 1 and Fig. 2, a kind of engineering drawing compass, comprise rotating shaft 1, securing member 2, rotation pin 3 and centre pin 4, described rotating shaft 1 is fixed on the upper end of securing member 2, the upper end of rotation pin 3 and centre pin 4 is connected with a joggle by gear 5, and be fixed on the lower end of securing member 2, and adopt gear 5 to be connected with a joggle, the angle of operation more steadily, between bipod increases; A circular pen clip 7 is fixed by screw 6 in the bottom of described rotation pin 3, and pen clip 7 can rotate up and down, and circular pen clip 7 can be used for clamping typical circular pen core, and up-down adjustment pen clip 7 positions as required; As shown in Figure 3, described pen clip 7 inwalls are vertically provided with banking stop 71, banking stop 71 is four, four banking stops 71 form the groove suitable with slate pencil, slate pencil can be fixed in a groove, the openend of pen clip 7 is by adjustable pen clip 7 sizes of bolt 8, and pen clip 7 can clamp different pens, diverse in function, practical.

Described centre pin 4 is provided with graduation mark 41, can serve as ruler and use, and its bottom clamps the upper end that is connected to pilot pin 9, integrates compasses and ruler, easy to carry, easy to use.

Claims

1. an engineering drawing compass, comprise rotating shaft (1), securing member (2), rotation pin (3) and centre pin (4), it is characterized in that: described rotating shaft (1) is fixed on the upper end of securing member (2), the upper end of rotation pin (3) and centre pin (4) is connected with a joggle by gear (5), and is fixed on the lower end of securing member (2); A circular pen clip (7) is fixed by screw (6) in the bottom of described rotation pin (3), and pen clip (7) can rotate up and down; Described pen clip (7) inwall is vertically provided with banking stop (71), and the openend of pen clip (7) is by the adjustable pen clip of bolt (8) (7) size.

2. a kind of engineering drawing compass according to claim 1, is characterized in that: described centre pin (4) is provided with graduation mark (41), and its bottom clamps the upper end that is connected to pilot pin (9).

3. a kind of engineering drawing compass according to claim 1, is characterized in that: described banking stop (71) is four.