CN208881434U

CN208881434U - A seating compasses

Info

Publication number: CN208881434U
Application number: CN201820330829.1U
Authority: CN
Inventors: 庞博
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-03-12
Filing date: 2018-03-12
Publication date: 2019-05-21
Anticipated expiration: 2028-03-12

Abstract

The utility model discloses one kind can either be used for Graphing of Engineering, also picture circle integrality and accuracy be can guarantee, easily draw the A seating compasses of circle comprising top rotating device, lower support seat, set between the two and outwardly extending rotation of leg and the paintbrush on rotation of leg tail end；Lower support seat bottom thread connects a pedestal, and the bottom centre of pedestal is equipped with a needle point；Rotating device includes the outer sleeve, the rotary sleeve in outer sleeve and two pairs of gear pairs, the knob outside outer sleeve of lower ending opening；The top of rotation of leg is set on the circumference of rotary sleeve, and two pairs of gear pairs are arranged up and down to be set to above rotary sleeve, and knob is with the top for being located in upper gear pair driving wheel, and rotary sleeve is the same as the lower section for being located in undergear pair driven wheel；Knob drives rotary sleeve to rotate under the action of the first and second gear pair, and then the paintbrush on rotation of leg is driven to draw circle.

Description

A seating compasses

Technical field

The utility model relates to a kind of drafting instrument, especially a kind of compasses for picture circle.

Background technique

Make bowlder using compasses, since the limitation of arm is prevent draw circle from continuous, and singlehanded circle of drawing is easy because not having There is support well and slide, causes paper rupture, draws phenomena such as circle failure.For this purpose, those skilled in the art have also made very More effort, for example, CN204055072U, discloses a kind of automatic rotation compasses, including support shaft and supporting leg, the lower end of support shaft It is provided with pivot portion, the outside fixing sleeve of support shaft is connected to handle, and movable sleeve is connected to going barrel, installation in going barrel in support shaft There is clockwork spring, supporting leg is hinged on going barrel, and the top of support shaft is equipped with inner hole, and it is vertically-mounted at the inner hole of support shaft to have push rod, There is a L shape thimble in the lower end of push rod, and going barrel bottom is provided with location hole, and the vertical part of thimble can be protruded into location hole and by going barrel Fixed, supporting leg includes connecting rod and elastic device, and connecting rod is hinged on going barrel.The compasses of the structure be by the elastic force of clockwork spring come The pencil on supporting leg is driven to rotate automatically, but there is also some problems for the compasses of this structure: first, the connecting rod of supporting leg is hinged On going barrel, the elastic device of supporting leg is hinged on connecting rod, the cunning of supporting leg when structure hinged in this way easily causes mapping It moves, it cannot be guaranteed that the integrality and accuracy of picture circle；Second, making the automatic rotary picture circle of supporting leg using clockwork spring, due to rushing for clockwork spring Power is larger, it is easy to draw broken paper, and not can control picture circular arc or semicircle；Third, due to the limitation of clockwork spring and supporting leg, the knot The size of structure is very limited, it is impossible to be used in circle is drawn in large-scale Graphing of Engineering.

Utility model content

The purpose of this utility model is to design one kind can easily draw circle, can either be used for Graphing of Engineering, also can guarantee picture The A seating compasses of circle integrality and accuracy.

To achieve the above objectives, the present invention adopts the following technical solutions:

A kind of A seating compasses comprising top rotating device, lower support seat, be set to it is between the two and outwardly extending Rotation of leg and the paintbrush on rotation of leg tail end；The top opening of lower support seat and top upwardly extends a fixing axle, bottom Portion is threadedly coupled a pedestal, and the bottom centre of pedestal is equipped with a needle point；Outside rotating device includes the outer sleeve of lower ending opening, is set to Rotary sleeve and two pairs of gear pairs, the knob outside outer sleeve in sleeve；The top of rotation of leg is set on the circumference of rotary sleeve, Two pairs of gear pairs are arranged up and down to be set to above rotary sleeve, and for knob with the top for being located in first gear pair driving wheel, rotary sleeve is same It is located in the lower section of second gear pair driven wheel, first gear pair driven wheel and second gear pair driving wheel is coaxial and the both ends of axis On the fixed block of outer sleeve inner wall；Knob drives the rotation of first gear pair, and rotation is driven under the action of second gear pair Pivoted housing rotation, and then the paintbrush on rotation of leg is driven to draw circle.

Preferably, the pedestal is made of transparent plastic.

Preferably, it arranges on the knob excircle equipped with anti-skid bulge.

Preferably, the rotary sleeve is an integral structure with rotation of leg；The rotary sleeve is equipped with a variety of, every kind of rotary sleeve root A kind of specification for drawing radius of circle is set as according to rotation of leg gradient and pen position.

Preferably, the rotary sleeve is an integral structure with rotation of leg；The rotation of leg tail end be horizon bar, horizon bar by The bar cylinder for being fixed on rotation of leg tail portion and the telescopic rod being interspersed in bar cylinder are constituted, and paintbrush is set to telescopic rod tail portion；The bar A locking nut is additionally provided on cylinder, the top of locking nut passes through in bar cylinder and withstands on telescopic rod.

Preferably, the scale for representing picture radius of circle is indicated on the telescopic rod, and the through-hole of an exposing scale is provided on bar cylinder, And it is located at the pointer for being equipped in the middle part of through-hole and being directed toward scale on bar cylinder.

Preferably, the excircle of the rotary sleeve is equipped with a lug, and the top of the rotation of leg is hinged on lug；It is convex A rubber axle sleeve is equipped between the inner hole and articulated shaft of ear, axle sleeve one end stretches out inner hole, is located at axle sleeve extension end on articulated shaft and sets There is a lock screw.

Preferably, the side of lower support seat opens up the strip slot of an accommodating rotation of leg.

Compared with prior art the utility model has the beneficial effects that first is that, pass through two pairs of gear pairs and realize knobs control rotation Turn the rotary picture circle of leg, it is easy to operate, and draw bowlder will not because of arm limitation and influence the globality of picture circle and accurate Degree；Second is that the pedestal and lower support holder structure of bottom, so that the lower part of entire compasses is born a heavy burden and stablized, drawing bowlder will not be deviated The accuracy for influencing mapping is particularly suitable for large-scale Graphing of Engineering.

Detailed description of the invention

Fig. 1 is the schematic perspective view of the utility model A seating compasses；

Fig. 2 is the schematic perspective view that the utility model A seating compasses remove outer sleeve；

Fig. 3 is the schematic perspective view of the utility model A seating compasses outer sleeve；

Fig. 4 is the schematic perspective view of the utility model A seating compasses pedestal；

Fig. 5 is the schematic perspective view of the utility model A seating compasses rotation of leg；

Fig. 6 is the schematic perspective view of rotary sleeve in the utility model A seating compasses another kind embodiment；

Fig. 7 is the broken section structural schematic diagram of Fig. 6.

Specific embodiment

In order to be more clear the technical solution of the utility model, below in conjunction with attached drawing, the utility model is carried out detailed Explanation.It should be understood that specific embodiment described in this specification is not just for the sake of explaining the utility model In order to limit the protection scope of the utility model.

Embodiment 1: referring to attached drawing 1-5.A kind of A seating compasses comprising top rotating device 1, lower support seat 2, set In between the two and outwardly extending rotation of leg 3 and the paintbrush 4 on 3 tail end of rotation of leg；Paintbrush 4 can be pencil, ball Pen etc., the mode that paintbrush 4 is fixed on rotation of leg 3 is the prior art, that is, has clip to clamp, rubber sleeve clamping, spring clamp etc. A variety of, therefore not to repeat here.The top opening of lower support seat 2 and top upwardly extends a fixing axle, 2 bottom of lower support seat It is threadedly coupled a pedestal 5, the bottom centre of pedestal 5 is equipped with a needle point 50.

The rotating device 1 includes outer sleeve 10, the rotary sleeve 20 in outer sleeve 10 and the two pairs of teeth of lower ending opening Wheel set 21,22, the knob 6 outside outer sleeve 10；The top of rotation of leg 3 is set on the circumference of rotary sleeve 20, two pairs of gear pairs 21, about 22 arrangements are set to 20 top of rotary sleeve, top of the knob 6 with the driving wheel 211 for being located in first gear pair 21, rotation Lower section of the set 20 with the driven wheel 222 for being located in second gear pair 22, the driven wheel 212 and second gear pair of first gear pair 21 22 driving wheel 221 is coaxially and the both ends of axis are set on the fixed block 100 of 10 inner wall of outer sleeve.Specifically, lower support Seat 2 upwardly extends a fixing axle, and the fixing axle can extend to 6 lower section of knob, rotary sleeve 20, second gear pair 22 Driven wheel 222, first gear pair 21 driving wheel 211 be spaced be set to fixing axle on；The top surface of rotary sleeve 20 is extended with a circle Ring sleeve, the driven wheel 222 are fixed on the annulus sleeve, i.e., rotary sleeve 20 is rotated with driven wheel 222；First gear pair 21 Driving wheel 211 be set in fixing axle by bearing, the lower part of knob 6 extends an annulus sleeve, and driving wheel 211 is fixed on the circle On ring sleeve, i.e., driving wheel 211 is rotated with the rotation of knob 6；The driven wheel 212 of first gear pair 21 is set to driving wheel 211 Side, the driving wheel 221 of second gear pair 22 and the driven wheel 212 of first gear pair 21 be arranged in a fixing axle, And the both ends of the fixing axle respectively by bearing install 10 inner wall of outer sleeve lug 100 on.

Make picture bowlder, turning knob 6, knob 6 drives the driving wheel 211 of first gear pair 21 to rotate, with driving wheel 211 The driven wheel 212 of engagement is driven reverse rotation；Under coaxial effect, the driving wheel 221 and driven wheel 212 of second gear pair 22 are same To rotation；Under the action of second gear pair 22, the driven wheel 222 of second gear pair 22 is driven opposite with driving wheel 221 Direction rotates, at this point, driven wheel 222 is consistent with the direction of rotation of knob 6；Since driven wheel 222 is fixed on rotary sleeve 20 On annulus sleeve, the rotation of driven wheel 222 namely drive 20 rotating Vortex of rotary sleeve, and then drive rotation of leg 3 in outer sleeve 10 It is rotated between lower support seat, and circle is drawn by the paintbrush on rotation of leg 3；As a result, draw circle operation very simple, only need will under The needle point 50 of 2 bottom of portion's support base is inserted into paper, positioning centre, and rotation knob 6 can draw circle.

Above-mentioned pedestal 5 can also be made of transparent plastic, and can pay close attention to needle point state when mapping so constantly, be mapped more smart Really.Lower support seat can be made into solid by more optimal solution, and such lower part weight bearing is bigger, and support force is more steady, and it is accurate to draw circle Property is higher, meanwhile, also it is not required to hand steered, singlehanded turning knob 6 can draw circle.It arranges to be equipped on the excircle of above-mentioned knob 6 and prevent Sliding protrusion, so that more labor-saving, more convenient operation when rotation；A circle fillet can be arranged on knob 6 and carve for preferred scheme Degree can thus draw fan-shaped, semicircle or arc by scale.

Above-mentioned rotary sleeve 20 is an integral structure with rotation of leg 3, and referring to attached drawing 5,3 tail end of rotation of leg is horizon bar, horizontal Bar is made of the bar cylinder 30 and the telescopic rod 31 being interspersed in bar cylinder 30 for being fixed on 3 tail portion of rotation of leg, and paintbrush 4 is set to telescopic rod 31 tail portions；A locking nut 32 is additionally provided on the bar cylinder 30, the top of locking nut 32 passes through in bar cylinder 30 and withstands on flexible On bar 31, moving telescopic bar 31 adjust radius arrive suitable position when, screwing locking nut 32 can fix, draw justify.It is described flexible The scale for representing picture radius of circle can also be indicated on bar 31, and the through-hole (not shown) of an exposing scale is provided on bar cylinder 30, and It is located at the pointer for being equipped in the middle part of through-hole and being directed toward scale on bar cylinder 30, is directly adjusted in this way according to scale, it is more time saving, conveniently.

Alternatively, above-mentioned rotary sleeve 20 can also be equipped with plurality of specifications, and the rotation of leg 3 of each rotary sleeve 20 tilts Degree is different, and the position of paintbrush 4 is different, and in this way being set rotary sleeve 20 to according to the position of 3 gradient of rotation of leg and paintbrush 4 can be with The circle for drawing different radii size is directly replaced when needing.

Embodiment 2: on the basis of embodiment 1, referring to attached drawing 6 and 7.A kind of A seating compasses, by 20 He of rotary sleeve Rotation of leg 3 is arranged to articulated manner, specifically, the excircle of the rotary sleeve 20 is equipped with a lug 7, the rotation of leg 3 Top be hinged on lug 7；Between the inner hole and articulated shaft 9 of lug 7 be equipped with a rubber axle sleeve 80,80 one end of axle sleeve stretch out in Hole is located at 80 extension end of axle sleeve on articulated shaft 9 and is equipped with a lock screw 8.In use, unclamping lock screw 8, rotation of leg 3 is rotated To after suitable position, lock screw 8 is tightened, the inner hole of lug 7 is enriched in extrusion deformation of the rubber axle sleeve 80 by lock screw 8, So that rotation of leg 3 is fixed, circle can be drawn by this moment rotating knob 6, easy to operate.

Preferred scheme can open a strip slot (not shown), the strip slot in the side of lower support seat 2 Rotation of leg 3 can be accommodated, due to rotary sleeve 20 and rotation of leg 3 be it is hinged, when without using compasses, rotation of leg 3 can be rotated Into strip slot, collection compasses in this way have saved space.

Claims

1. a kind of A seating compasses, it is characterised in that: including top rotating device (1), lower support seat (2), be set between the two And outwardly extending rotation of leg (3) and be set to rotation of leg (3) tail end on paintbrush (4)；The top opening of lower support seat (2) and Top upwardly extends a fixing axle, and bottom thread connects a pedestal (5), and the bottom centre of pedestal (5) is equipped with a needle point (50)；Rotation Rotary device (1) includes the outer sleeve (10) of lower ending opening, the rotary sleeve (20) and two pairs of gear pairs being set in outer sleeve (10) (21,22) are set to the knob (6) of outer sleeve (10) outside；The top of rotation of leg (3) is set on the circumference of rotary sleeve (20), and two pairs Gear pair (21,22) is arranged up and down to be set to above rotary sleeve (20), and knob (6) is same to be located in secondary (21) driving wheel of first gear (211) top, rotary sleeve (20) is the same as the lower section for being located in secondary (22) driven wheel (222) of second gear, first gear pair (21) Secondary (22) driving wheel (221) of driven wheel (212) and second gear is coaxial and the both ends of axis are set to consolidating for outer sleeve (10) inner wall Determine on block (100)；Knob (6) drives first gear secondary (21) rotation, drives rotary sleeve under the action of second gear secondary (22) (20) it rotates, and then the paintbrush (4) on rotation of leg (3) is driven to draw circle.

2. A seating compasses according to claim 1, it is characterised in that: the pedestal (5) is made of transparent plastic.

3. A seating compasses according to claim 2, it is characterised in that: arrange to be equipped on knob (6) excircle and prevent Sliding protrusion.

4. A seating compasses according to claim 2, it is characterised in that: the rotary sleeve (20) is integrated with rotation of leg (3) Formula structure；The rotary sleeve (20) be equipped with it is a variety of, every kind of rotary sleeve (20) is according to rotation of leg (3) gradient and paintbrush (4) position It is set as a kind of specification for drawing radius of circle.

5. A seating compasses according to claim 2, it is characterised in that: the rotary sleeve (20) is integrated with rotation of leg (3) Formula structure；Rotation of leg (3) tail end is horizon bar, and horizon bar is by being fixed on the bar cylinder (30) of rotation of leg (3) tail portion and interting Telescopic rod (31) in bar cylinder (30) is constituted, and paintbrush (4) is set to telescopic rod (31) tail portion；It is additionally provided on the bar cylinder (30) The top of one locking nut (32), locking nut (32) passes through in bar cylinder (30) and withstands on telescopic rod (31).

6. A seating compasses according to claim 5, it is characterised in that: indicated on the telescopic rod (31) and represent picture radius of circle Scale, the through-hole of an exposing scale is provided on bar cylinder (30), and be located to be equipped in the middle part of through-hole on bar cylinder (30) and be directed toward scale Pointer.

7. A seating compasses according to claim 2, it is characterised in that: it is convex that the excircle of the rotary sleeve (20) is equipped with one The top of ear (7), the rotation of leg (3) is hinged on lug (7)；A rubber is equipped between the inner hole and articulated shaft (9) of lug (7) Glue axle sleeve (80), axle sleeve (80) one end stretch out inner hole, are located at axle sleeve (80) extension end on articulated shaft (9) and are equipped with a lock screw (8)。

8. A seating compasses according to claim 1, it is characterised in that: the side of the lower support seat (2) opens up an appearance Set the strip slot of rotation of leg (3).