A kind of adjustable bow pen
Technical field
The present invention relates to a kind of improvement of drawing tools, a kind of adjustable bow pen is refered in particular to.
Background technology
In study or work, when people need drawing, all can when drawing straight line or two straight lines for determining distance
Use ruler, but a holding ruler, and a holding pen is inconvenient, and parallel and fixed range is very between two straight lines
Hardly possible is held, and the lines for finally drawing become oblique line and not parallel.
The content of the invention
A kind of adjustable bow pen is provided the invention aims to overcome the deficiencies in the prior art.
To reach above-mentioned purpose, the technical solution adopted by the present invention is:A kind of adjustable bow pen, including support frame and longitudinal direction are locked
Mechanism;Support frame as described above has two, and parallel interval is set;Described two support frame bottoms are respectively equipped with rotatable roller;Institute
State two support frames top and be separately fixed at scale bar two ends;The scale bar one side is provided with the uniform quarter of metric system or English system
Degree, is fixedly installed handle in the middle of another side;Two support frame is located at and carries uniform scale face side;On the scale bar
It is provided with two outer sleeves that can be slided along scale bar;The outer sleeve is located at handle both sides respectively;The outer sleeve bottom is provided with
Horizontal retaining mechanism;Two are provided with inside the outer sleeve in symmetrical the first rail groove and the second rail groove;First rail
Road groove is located at and carries uniform scale face side;First rail groove is provided with rectangular through holes;It is provided with inside the outer sleeve
Inner sleeve;Longitudinal retaining mechanism via through holes are connected with inner sleeve;Longitudinal retaining mechanism can be slided along through hole;In described
Sleeve can be slided along the first rail groove and the second rail groove.
Preferably, it is provided with spring between the inner sleeve bottom and outer sleeve;The spring is located in rail groove;It is described two
Nib is controlled on the tangent plane of roller by telescopic spring.
Preferably, the outer sleeve is more than 2.
Preferably, the scale that the scale bar one side is provided with includes metric system or English system.
Preferably, assembly tool application field is changed in the outer sleeve includes that Graphing of Engineering, sheet-metal baiting, metal are cut
Cut, agro-farming is sowed.
Due to the utilization of above-mentioned technical proposal, the present invention has following advantages compared with prior art:
Adjustable bow pen of the present invention makes inner sleeve exist by distance between scale bar high scale two outer sleeves of selection by spring
It is scalable in outer sleeve, make two nibs on the tangent plane of roller, rolled by two rollers, realize straight line and different line widths
Work;Adjustable bow pen of the present invention can easily draw the straight line of different in width, and regulation roller is with nib same
Mechanism's design of plane is ingenious, simple to operate, practical.
Brief description of the drawings
Technical solution of the present invention is described further below in conjunction with the accompanying drawings:
Accompanying drawing 1 is the first angle stereogram of adjustable bow pen of the invention;
Accompanying drawing 2 is the C portions zoomed-in view of accompanying drawing 1;
Accompanying drawing 3 is the second angle stereogram of adjustable bow pen of the invention;
Accompanying drawing 4 is the A-A section view zoomed-in views of accompanying drawing 3;
Accompanying drawing 5 is the B portions zoomed-in view of accompanying drawing 4;
Wherein:1st, handle;2nd, scale bar;3rd, support frame;4th, roller;5th, outer sleeve;6th, horizontal retaining mechanism;7th, longitudinal direction locking
Mechanism;8th, inner sleeve;9th, spring;10th, through hole;11st, the first rail groove;12nd, the second rail groove.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
Accompanying drawing 1-5 is adjustable bow pen of the present invention, including support frame 3 and longitudinal retaining mechanism 7;Support frame as described above
3 have two, parallel and interval setting;The bottom of described two support frames 3 is respectively equipped with rotatable roller 4;Two support frame 3
Top is separately fixed at the two ends of scale bar 2;The scale that the one side of scale bar 2 is provided with includes metric system or English system, opposite side
Handle 1 is fixedly installed in the middle of face;Two support frame 3 is located at and carries uniform scale face side;The scale bar 2 is provided with can
Along the outer sleeve 5 that scale bar 2 is slided;The outer sleeve 5 be 2 and more than;The bottom of the outer sleeve 5 is provided with horizontal retaining mechanism
6;Two are provided with inside the outer sleeve 5 in symmetrical the first rail groove 11 and the second rail groove 12;First rail groove 11
Positioned at uniform scale face side;First rail groove 11 is provided with rectangular through holes 10;It is provided with inside the outer sleeve 5
Inner sleeve 8;The via through holes 10 of longitudinal retaining mechanism 7 are connected with inner sleeve 8;Longitudinal retaining mechanism 7 can be slided along through hole 10
It is dynamic;The inner sleeve 8 can be slided along the first rail groove 11 and the second rail groove 12;Set between the bottom of the inner sleeve 8 and outer sleeve 5
There is spring 9;The spring 9 is located in rail groove.Assembly tool is changed in the inner sleeve 8 can be controlled in rolling by telescopic spring
On the tangent plane of wheel.Assembly tool application field is changed in the inner sleeve 8 includes that Graphing of Engineering, sheet-metal baiting, metal are cut
Cut, agro-farming is sowed.
When using, outer sleeve 5 chooses the length between two outer sleeves 5 according to the scale on scale bar 2, by longitudinal direction locking machine
Structure 7 makes outer sleeve 5 be fixedly clamped with scale bar 2, and pen is fixedly clamped with inner sleeve 8 by horizontal retaining mechanism 6;Hand holds handle
Hand 1 is rolled by two rollers 4, draws two wide straight lines;When two nibs are not on the tangent plane of roller, can lead to
Telescopic spring is crossed to control on the tangent plane of roller.
Due to the utilization of above-mentioned technical proposal, the present invention has following advantages compared with prior art:
Adjustable bow pen of the present invention makes inner sleeve exist by distance between scale bar high scale two outer sleeves of selection by spring
It is scalable in outer sleeve, make two nibs on the tangent plane of roller, rolled by two rollers, realize straight line and not collinear
Width work;Adjustable bow pen of the present invention can easily draw the straight line of different in width, and regulation roller is with nib same
Mechanism's design of one plane is ingenious, simple to operate, practical.
The above is only concrete application example of the invention, protection scope of the present invention is not limited in any way.All uses
Equivalents or equivalence replacement and the technical scheme that is formed, all fall within rights protection scope of the present invention.