CN201015934Y

CN201015934Y - Electric compasses

Info

Publication number: CN201015934Y
Application number: CNU2007201419060U
Authority: CN
Inventors: 阿布杜克热木·喀迪尔
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-15
Filing date: 2007-03-15
Publication date: 2008-02-06
Anticipated expiration: 2017-03-15

Abstract

The utility model discloses an electric compass, comprising a main motor, an auxiliary motor and batteries. The main motor, auxiliary motor and the batteries are arranged inside a hollow oblate shell; the shell is positioned above a chassis, the underside of the chassis is equally distributed with cupules; a through hole is arranged at the centre of the underside of the shell body; the bottom of the main motor is fixedly connected to a lug boss which is positioned at the chassis centre in the through hole; the top of the main motor is fixedly connected to the top face of the shell body. The top face of the shell body is horizontally provided with a runner, and the runner is provided with rack compass legs with downwards tooth surface correspondingly inside; one end of the compass legs is vertically provided with a drawing pen which extends to the chassis. The top face of the shell body between the main motor and the drawing pen is provided with an opening which is communicated with the runner; a driving gear arranged above the auxiliary motor shaft is engaged with the rack compass legs at the opening. The utility model has the advantages of simple structure, small bulk, easy carrying and easy operation.

Description

Electronic compasses

Technical field

The utility model belongs to the improvement of compasses structure, particularly electronic compasses.

Background technology

Existing compasses, the particularly educational compasses that uses in large, medium and small classroom instruction, in order to draw bigger circle, its volume is all bigger, though the compass foot that has can fold, flexible, but still inconvenient problem is carried in existence.And usually be not easy to find accurately the center of circle when on blackboard, drawing, and on blackboard, skid easily, it is convenient inadequately to use.

The utility model content

The purpose of this utility model is to provide a kind of electronic compasses, and it is simple in structure, and volume is small and exquisite, is easy to carry about with one, and is easy to use.

The purpose of this utility model is achieved in that a kind of electronic compasses, comprise the master, secondary motor and battery, main, secondary motor, battery is installed in respectively in the oblate housing of a hollow, housing is positioned at top, a chassis, the uniform sucker that is being provided with on the undersurface of bottom disc, the bottom center of housing is being provided with a through hole, the bottom of main motor is fixed on the center chassis lug boss that is positioned at this through hole, the top of main motor axle and housing end face are fixed together, on the housing end face, be horizontally disposed with a chute, be equipped with the downward tooth bar compass foot of the flank of tooth in the chute, one end of compass foot vertically is being provided with the drawing pen that extends to the chassis, the opening of linking up with chute is being set on the housing end face between main motor and the drawing pen, and the driving gear that is installed on the secondary motor reel is meshed with the tooth bar compass foot at this opening part.

When the utility model uses, the utility model is adsorbed on the blackboard, is not easy when drawing like this on blackboard, to skid by the sucker that is installed on the chassis.Start main motor, can drive the housing rotation, order about the compass foot band then and drawing pen at the blackboard upper drawing circle.In the time will adjusting drawn diameter of a circle, start secondary motor, can drive elongation of tooth bar compass foot or gathering by the driving gear on the secondary motor reel, thereby adjust the size of drawn circle.The utility model is simple in structure, and volume is small and exquisite, is easy to carry about with one, and can draw the circle of all size on blackboard, is easy to locate on smooth surface, and is easy to use.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 looks cross-sectional view for master of the present utility model;

Fig. 2 is a plan structure schematic diagram of the present utility model.

The specific embodiment

A kind of electronic compasses as shown in Figure 1 and Figure 2, comprise major and

minor motor

4,6 and battery 1, and major and

minor motor

4,6, battery 1 are installed in respectively in the oblate housing 11 of a hollow, and housing 11 is made of plastic casing or Stainless Steel Shell.Housing 11 is positioned at 9 tops, a chassis, and the uniform sucker 10 that is being provided with can be absorbed and fixed at the utility model on the blackboard by sucker 10 on 9 bottom surfaces, chassis.The bottom center of housing 11 is being provided with a through hole, and the bottom of main motor 4 is fixed on chassis 9 central boss that are positioned at this through hole, and the top of main motor axle and housing 11 end faces are fixed together.Start main motor 4 and can drive housing 11 rotations.On housing 11 end faces, be horizontally disposed with a chute 2, be equipped with the downward tooth bar compass foot 3 of the flank of tooth in the chute 2, one end of compass foot 3 vertically is being provided with the drawing pen 8 that extends to chassis 9, the opening of linking up with chute 2 is being set on housing 11 end faces between main motor 4 and the drawing pen 8, and the driving gear 7 that is installed on the secondary motor reel is meshed with tooth bar compass foot 3 at this opening part.Start secondary motor 6, can drive 3 elongations of tooth bar compass foot or gathering by driving gear 7, thereby adjust the diameter of a circle of painting.Said chute 2 is a rectangular channel, and horizontally set compass foot positioning strip 5 on 11 end faces of the housing above the chute 2.Said chute 2 can also be swallow tail shaped slot, and the cross section of tooth bar compass foot 3 also is a swallow-tail form, can position the drafting accuracy height so preferably to compass foot 3.

Claims

1. electronic compasses, comprise the master, secondary motor (4,6) and battery (1), it is characterized in that: main, secondary motor (4,6), battery (1) is installed in respectively in the oblate housing (11) of a hollow, housing (11) is positioned at top, a chassis (9), the uniform sucker (10) that is being provided with on the bottom surface, chassis (9), the bottom center of housing (11) is being provided with a through hole, the bottom of main motor (4) is fixed on chassis (9) central boss that is positioned at this through hole, the top of main motor axle and housing (11) end face is fixed together, on housing (11) end face, be horizontally disposed with a chute (2), be equipped with the downward tooth bar compass foot (3) of the flank of tooth in the chute (2), one end of compass foot (3) vertically is being provided with the drawing pen (8) that extends to chassis (9), the opening of linking up with chute (2) is being set on housing (11) end face between main motor (4) and the drawing pen (8), and the driving gear (7) that is installed on the secondary motor reel is meshed with tooth bar compass foot (3) at this opening part.

2. electronic compasses according to claim 1 is characterized in that: said chute (2) is a rectangular channel, and horizontally set compass foot positioning strip (5) on housing (11) end face of chute (2) top.

3. electronic compasses according to claim 1 is characterized in that: said chute (2) is a swallow tail shaped slot, and the cross section of tooth bar compass foot (3) also is a swallow-tail form.