CN202130184U

CN202130184U - Novel compass

Info

Publication number: CN202130184U
Application number: CN201120096967U
Authority: CN
Inventors: 张宸熙
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-01
Filing date: 2011-04-01
Publication date: 2012-02-01
Anticipated expiration: 2021-04-01

Abstract

Provided is a novel compass, comprising a compass body, a rotary handle on the compass body, compass legs, a fixed leg and a pencil leg, wherein the fixed leg and the pencil leg are connected on the compass legs. The fixed leg is a hollow elastic base, which is rotatably connected with the compass leg via a rotating bearing. A measuring tape is fixed in the hollow elastic base, with the pull-out end being exposed to the outer side of the hollow elastic base via a through hole in the inner side of the hollow elastic base. The novel compass of the utility model has a simple structure and achieves excellent fixing effect through the structural improvement of a rotary handle and a fixed leg of a conventional compass. Meanwhile, the novel compass, which is convenient and practical with low cost, facilities radius measurement, saves a lot of working time and is particularly suitable for students and working people.

Description

A kind of novel bow compass

One, technical field

The utility model relates to the office appliance field, especially a kind of novel bow compass.

Two, background technology

Compasses are indispensable instruments in drawing; Existing compasses are employed in the fixing pilot pin of inserting of fixedly foot of a compass leg, and another angle is the structure of drawing instrument fixedly, when reality is used; Because the long-term use of pilot pin causes the stitch rust to be easy to produce the phenomenon of sliding on paper; In addition, when accurately mapping, often need to confirm the radius of drawn circular arc, need utilize ruler to measure immediately in addition this moment, prolonged the time of mapping, brought inconvenience to use.

Three, summary of the invention

The purpose of the utility model provides novel bow compass a kind of simple in structure, convenient and practical.

The utility model solves the technical scheme that the prior art problem is adopted: a kind of novel bow compass; Comprise stock, be located at rotary handle, the compass leg on the stock and be connected in fixing feet and the pencil pin on the compass leg; Said fixing feet is the hollow elasticity base; Said hollow elasticity base is rotationally connected through rolling bearing and compass leg, is fixed with tape measure in the said hollow elasticity base, and the end of pulling out of said tape measure is exposed to the outside through the inboard through hole of said hollow elasticity base.

The said rotary handle outside is socketed with the rubber case that the surface is provided with screw thread.

The compass leg that is connected with said pencil pin is the telescopic structure.

The beneficial effect of the utility model is: the utility model is simple in structure, and the architecture advances through with the fixing feet of the rotary handle of existing compasses and compasses makes compasses have good fixed effect; Simultaneously; Make things convenient for the measurement of radius, saved a large amount of working times, convenient and practical; And cost is low, is particularly suitable for study and work crowd's use.

Four, description of drawings

Fig. 1 is the structural representation of the utility model.

Five, the specific embodiment

Below in conjunction with specific embodiment the utility model is described:

As shown in Figure 1; A kind of novel bow compass; Comprise stock 1, be located at rotary handle 2, the compass leg 3 on the stock 1 and be connected in fixing feet and the pencil pin 5 on the compass leg 3, said fixing feet is a hollow elasticity base 4, and said hollow elasticity base 4 is rotationally connected through rolling bearing 6 and compass leg 3; Be fixed with tape measure 7 in the said hollow elasticity base 4, the end of pulling out of said tape measure 7 is exposed to the outside through said hollow elasticity base 4 inboard through holes 8.Rotary handle slides in order to prevent to map, and said rotary handle 2 outsides are socketed with the rubber case that the surface is provided with screw thread.For satisfying the demand of different radii, the compass leg 3 that is connected with pencil pin 5 is the telescopic structure.

The utility model is through adopting the base of elastomeric material on fixing feet; Effectively avoid the slip of fixing feet on paper of compasses, be engaged in the tape measure that adds in the hollow elasticity base 4, reached the purpose of instant measurement radius; And effectively utilized the space, convenient and practical.

Above content is the further explain that combines concrete optimal technical scheme that the utility model is done, and can not assert that the practical implementation of the utility model is confined to these explanations.For the those of ordinary skill of technical field under the utility model, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of the utility model.

Claims

1. novel bow compass; Comprise stock, be located at rotary handle, the compass leg on the stock and be connected in fixing feet and the pencil pin on the compass leg; It is characterized in that: said fixing feet is the hollow elasticity base; Said hollow elasticity base is rotationally connected through rolling bearing and compass leg, is fixed with tape measure in the said hollow elasticity base, and the end of pulling out of said tape measure is exposed to the outside through the inboard through hole of said hollow elasticity base.

2. a kind of novel bow compass according to claim 1 is characterized in that: the said rotary handle outside is socketed with the rubber case that the surface is provided with screw thread.

3. a kind of novel bow compass according to claim 1 is characterized in that: the compass leg that is connected with said pencil pin is the telescopic structure.