CN202115205U

CN202115205U - Stable ellipse delineating device

Info

Publication number: CN202115205U
Application number: CN201120197421XU
Authority: CN
Inventors: 陈勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-13
Filing date: 2011-06-13
Publication date: 2012-01-18
Anticipated expiration: 2021-06-13

Abstract

The utility model provides a stable ellipse delineating device, which belongs to the technical field of groups of circular curve plotters or similar instruments in subclasses of writing or plotting accessories in office supply classes of writing or plotting appliances in printing subdivisions of writing or plotting utensils in operation and transportation division according to the International Patent Classification (IPC). The stable ellipse delineating device structurally comprises a scale, a slide groove is arranged on the scale, a support leg is fixed to the middle of the slide groove, an upper fastener and a lower fastener which are fastened mutually are symmetrically mounted in the slide groove left and right and are respectively disposed on two sides of the scale, a concave groove is disposed on the upper portion of the upper fastener, a closed winding wire is fixed into the concave ring, and a plot pen is arranged on the winding wire. Compared with the prior art, the stable ellipse delineating device has the advantages of reasonable design, simple structure, convenience in use and the like, and can be widely applied onto mathematics teaching in schools and training institutes.

Description

The oval drawing apparatus of firm formula

Technical field

The utility model relates to the oval drawing apparatus of a kind of firm formula, belongs to International Patent Classification (IPC) (IPC) division and belongs to operation Department of Transportation, and printing branch is write or drawing appliance; Big type of office appliance is write or drawing article; Write or draw assistant product group, circular curve plotter or analogous instrument technical group field.

Background technology

In the prior art, the used ellipsograph of student or teacher is a kind of ancient oval light instrument of drawing, and common ellipsograph is made up of the base plate and the swing arm of band cross chute.

This ellipsograph is that a movable sliding table mark respectively is housed on the cross chute.A swing arm is arranged below the slide sign, and this swing arm fuses with two slide signs in length and breadth, moves slide sign, and the swing arm below it can be done 360 ° turn and draw and meet the ellipse of elliptic equation.But the volume of this oval tracer is fixed, and the oval size of being drawn is fixing, is difficult for during drafting being fixed on the blackboard, receives the restriction of its size or shape, is not easy to carry, and draws ellipse to the student and has brought inconvenience.

Summary of the invention

The technical assignment of the utility model is the deficiency that solves prior art, provides a kind of simple in structure, portable firm formula oval drawing apparatus.

The technical scheme of the utility model realizes by following mode, the oval drawing apparatus of this firm formula, and its structure comprises the chi body; Have chute on the chi body, the fixing supporting leg in chute middle part, left-right symmetric is equipped with last button, the lower fastener that buckle-type fastens in the said chute; Said upward button, lower fastener are separately positioned on chi body both sides; Have scrobicular ring on last button top, be fixed with closed coiling in the scrobicular ring, a drawing pen is set in the said coiling.

The end pin place of said lower fastener, supporting leg is mounted with sucker.

Said chi body is marked with scale.

The beneficial effect that the utility model is compared with prior art produced is:

Characteristics such as that the oval drawing apparatus of a kind of firm formula of the utility model has is simple in structure, easy to use, be skillfully constructed; Be provided with sucker at lower fastener and supporting leg end pin place; Strengthen the steadiness of this device, oval adjustable size, operation is very simple; Realization mapping pen is integrated with ellipsograph; The penholder that obsolete the time, only needs to map is connected in the chute in the ellipsograph and gets final product, and the scope of application of the utility model is extensive, can be widely used in the mathematical education in school, training organization.

Description of drawings

Accompanying drawing 1 is the side structure sketch map of the utility model;

Accompanying drawing 2 is Facad structure sketch mapes of the utility model.

Mark in the accompanying drawing is represented respectively:

1, chi body, 2, go up button, 3, supporting leg, 4, coiling, 5, drawing pen, 6, scrobicular ring, 7, sucker, 8, lower fastener, 9, chute.

The specific embodiment

Below in conjunction with accompanying drawing the oval drawing apparatus of the firm formula of the utility model is done following the detailed description.

Like accompanying drawing 1, shown in Figure 2, the oval drawing apparatus of this firm formula, its structure comprises chi body 1; Have chute 9 on the chi body 1; A supporting leg 3 is fixed at chute 9 middle parts, and left-right symmetric are equipped with last button 2, the lower fastener 8 that buckle-type fastens in the said chute 9, can adjust the distance between the button 2 on symmetrical two when in use according to actual needs; Said upward button 2, lower fastener 8 are separately positioned on chi body 1 both sides; Have scrobicular ring 6 on last button 2 tops, be fixed with closed coiling 4 in the scrobicular ring 6, a drawing pen 5 is set in the said coiling 4.

The end pin place of said lower fastener 8, supporting leg 3 is mounted with sucker 7, convenient this ellipsograph being placed on the plane such as blackboard; Said chi body 1 is marked with scale, the oval size of convenient adjustment.

Claims

1. the oval drawing apparatus of firm formula is characterized in that its structure comprises the chi body, has chute on the chi body; The fixing supporting leg in chute middle part; Left-right symmetric is equipped with last button, the lower fastener of mutual fastening in the said chute, and said upward button, lower fastener are separately positioned on chi body both sides, have scrobicular ring on last button top; Be fixed with closed coiling in the scrobicular ring, a drawing pen is set in the said coiling.

2. the oval drawing apparatus of firm formula according to claim 1 is characterized in that the end pin place of said lower fastener, supporting leg is mounted with sucker.

3. the oval drawing apparatus of firm formula according to claim 1 is characterized in that said chi body is marked with scale.