阅读说明：本技术 一种用于绘制螺旋线的教学绘图辅助装置 (Teaching drawing auxiliary device for drawing spiral line ) 是由 蔡娟娥 李凯 房得阳 于 2021-08-30 设计创作，主要内容包括：本发明属于教学绘图领域,具体涉及一种用于绘制螺旋线的教学绘图辅助装置,包括标尺杆和与标尺杆末端连接有转动杆,标尺杆上设置有标尺刻度；转动杆上设置有画笔组件；标尺杆上可滑动地连接有圆心脚组件,圆心脚组件包括与标尺杆连接的圆心脚连接头,圆心脚连接头上开设有圆心连接孔,圆心脚连接头的底端衔接有圆心支撑脚；标尺杆上还可滑动地连接有支撑组件。本发明中,通过标尺杆的设置,不仅可为圆心脚组件的移动量提供参考,还可为圆心脚组件的移动进行限位。通过支撑组件的设置,不仅可为圆心脚组件的转动量提供参考,还可让位圆心脚组件与其分离,这样可明确观察到圆心脚组件的移动轨迹,以便对斐波那契数列有一更清晰的认识。(The invention belongs to the field of teaching drawing, and particularly relates to a teaching drawing auxiliary device for drawing a spiral line, which comprises a scale rod and a rotating rod connected with the tail end of the scale rod, wherein scale scales are arranged on the scale rod; a painting brush component is arranged on the rotating rod; the scale rod is slidably connected with a circle center foot assembly, the circle center foot assembly comprises a circle center foot connector connected with the scale rod, a circle center connecting hole is formed in the circle center foot connector, and the bottom end of the circle center foot connector is connected with a circle center supporting foot; the scale rod is also connected with a supporting component in a sliding way. According to the invention, through the arrangement of the scale rod, reference can be provided for the movement amount of the circle center pin assembly, and the movement of the circle center pin assembly can be limited. Through the setting of supporting component, not only can provide the reference for the rotation volume of centre of a circle foot subassembly, still can abdicate centre of a circle foot subassembly rather than the separation, can clearly observe the movement track of centre of a circle foot subassembly like this to there is a clearer understanding to Fibonacci's number series.)

1. The utility model provides a teaching drawing auxiliary device for drawing helix which characterized in that: comprises a scale rod (1) and a rotating rod (2) connected with the tail end of the scale rod (1), wherein scale scales (11) are arranged on the scale rod (1);

a painting brush component (8) is arranged on the rotating rod (2);

the scale rod (1) is slidably connected with a circle center foot assembly (5), the circle center foot assembly (5) comprises a circle center foot connector (51) connected with the scale rod (1), a circle center connecting hole (511) is formed in the circle center foot connector (51), and the bottom end of the circle center foot connector (51) is connected with a circle center supporting foot (52);

the scale rod (1) is also slidably connected with a supporting component (3), the supporting component (3) comprises a supporting movable head (31) connected with the scale rod (1), the supporting movable head (31) is also provided with a supporting locking piece (33) capable of being matched with the circle center connecting hole (511), the supporting movable head (31) is provided with a movable head yielding position opening (311) capable of allowing the circle center foot component (5) to penetrate through, the bottom end of the supporting movable head (31) is rotatably connected with a supporting positioning cylinder (32), the top end of the supporting positioning cylinder (32) is provided with a circular scale (321), and the supporting positioning cylinder (32) is provided with a fixed cylinder yielding position opening (322) capable of allowing the circle center foot component (5) to penetrate through;

when the supporting and locking piece (33) is positioned in the circle center connecting hole (511), the circle center supporting foot (52) is positioned in the area surrounded by the supporting and positioning cylinder (32) and is coaxially arranged with the supporting and positioning cylinder (32).

2. An instructional drawing aid for drawing a spiral according to claim 1 wherein: the middle part of the scale rod (1) is provided with a scale strip-shaped opening (12);

the circle center pin connector (51) is provided with a circle center pin sliding block (512) which can be in sliding fit with the scale strip-shaped opening (12), two sides of the circle center pin sliding block (512) are provided with an upper circle center pin sliding plate (513) which can be matched with the top end of the scale rod (1), and a circle center connecting hole (511) is formed in the upper circle center pin sliding plate (513);

the supporting movable head (31) is provided with two supporting movable sliding blocks (315) which can be respectively matched with two sides of the scale rod (1), the supporting movable sliding blocks (315) are provided with movable head notches (312) which can be matched with the circle center foot sliding plate (513), the supporting movable head (31) is also provided with a supporting locking cavity (313) which penetrates through the upper end and the lower end of the supporting movable head (31) and is communicated with the movable head notches (312), and the supporting movable head (31) is also provided with a locking limiting groove (314) communicated with the supporting locking cavity (313);

the supporting locking piece (33) comprises a supporting locking rod (331) which can penetrate through a supporting locking cavity (313), a locking limiting ring (332) which is located in a locking limiting groove (314) is arranged on the supporting locking rod (331), a locking abutting head (333) is arranged at the top end of the supporting locking rod (331), the supporting locking piece (33) further comprises a locking elastic piece (334) which is located in the locking limiting groove (314), and the upper end and the lower end of the locking elastic piece (334) are respectively acted on the groove wall of the locking limiting groove (314) and the top end of the locking limiting ring (332), so that: the locking abutting head (333) abuts against the supporting movable head (31), and the lower end part of the supporting locking rod (331) can be positioned in the circle center connecting hole (511).

3. An instructional drawing aid for drawing a spiral according to claim 2 wherein: the supporting movable sliding block (315) is provided with a concave movable sliding block limiting groove (316);

the scale rod (1) is provided with a scale limiting bulge (13) which can be matched with the movable slide block limiting groove (316) in an embedding way.

4. An instructional drawing aid for drawing a spiral according to claim 1 wherein: the supporting and positioning cylinder (32) comprises a supporting cylinder section (34) and a supporting and positioning section (35) connected with the supporting cylinder section (34), and the supporting and positioning section (35) is provided with at least two fixing assemblies (4);

the fixing assembly (4) comprises an adsorption cylinder body (41) and a sucker (42) connected to the bottom end of the adsorption cylinder body (41), axial guide grooves (411) communicated with an inner cavity of the adsorption cylinder body (41) are correspondingly formed in two sides of the adsorption cylinder body (41), an adsorption supporting disc (43) is arranged in the adsorption cylinder body (41) in a vertically movable mode, guide pins (46) capable of respectively penetrating through the axial guide grooves (411) are arranged on two sides of the adsorption supporting disc (43), and the bottom end of the adsorption supporting disc (43) is connected with a piston (45) capable of being matched with the adsorption cylinder body (41) through a supporting connecting rod (47);

the fixing assembly (4) also comprises a support ring (49) which can be screwed with the adsorption cylinder (41) and can act on the guide pin (46).

5. An instructional drawing aid for drawing a spiral according to claim 4 wherein: the adsorption cylinder (41) is also internally provided with a corrugated pipe (44) connected with the top end of the adsorption support disc (43).

6. An instructional drawing aid for drawing a spiral according to claim 4 wherein: the bottom end of the guide pin (46) is also provided with a hemispherical guide pin bulge (48), and the bottom end of the guide pin bulge (48) is in rolling contact with the top end of the support ring (49).

7. An instructional drawing aid for drawing a spiral according to claim 4 wherein: the supporting and positioning section (35) is connected to the bottom end of the supporting cylinder section (34), and the supporting cylinder section (34) is in threaded connection with the supporting cylinder section (34).

8. An instructional drawing aid for drawing a spiral according to claim 4 wherein: the top end of the supporting cylinder section (34) is connected with a circumferential limiting piece (341) in a vertically sliding manner;

the lower end of the supporting movable head (31) is provided with a movable head circumferential limiting groove (317) capable of being matched with the circumferential limiting piece (341), and the movable head circumferential limiting groove (317) penetrates through the bottom end of the supporting movable head (31).

9. An instructional drawing aid for drawing a spiral according to claim 1 wherein: the painting brush assembly (8) comprises a painting brush outer barrel (81), the painting brush outer barrel (81) is provided with a hollow painting brush installation cavity (813), the painting brush installation cavity (813) penetrates through the bottom end of the painting brush outer barrel (81), and the top end of the painting brush outer barrel (81) is provided with an upper outer barrel opening (812) communicated with the painting brush installation cavity (813);

a painting brush inner barrel (82) is arranged in the painting brush outer barrel (81) in a sliding mode, an external painting brush abutting ring (811) is arranged on the inner surface of the painting brush outer barrel (81), an internal painting brush abutting ring (821) is arranged on the outer surface of the painting brush inner barrel (82), and an elastic painting brush piece (83) is further sleeved on the painting brush inner barrel (82);

the bottom end of the painting brush inner cylinder (82) is connected with two symmetrically arranged clamping sleeves (84), the clamping sleeves (84) are in a semicircular table shape, the radiuses of the clamping sleeves (84) are gradually increased from top to bottom, and clamping grooves (841) are formed in the inner side ends of the clamping sleeves (84);

when the upper end and the lower end of a painting brush elastic piece (83) act on the bottom end of a painting brush inner abutting ring (821) and the top end of a painting brush outer abutting ring (811) respectively, the painting brush inner abutting ring (821) abuts against the top end of the installation cavity (811), the upper end of a painting brush inner barrel (82) penetrates through an upper opening (812) of the outer barrel, and a clamping sleeve (84) is contained in the painting brush outer barrel (81); when the brush inner cylinder (82) is pressed down, the collet (84) can extend out of the brush outer cylinder (81).

10. An instructional drawing aid for drawing a spiral according to claim 1 wherein: also comprises a dust suction component (9);

the bottom of painting brush urceolus (81) is cup jointed corrugated cover (85), the lateral wall of corrugated cover (85) passes through hose (91) and dust absorption subassembly (9) intercommunication.

Technical Field

The invention relates to the technical field of teaching drawing, in particular to a teaching drawing auxiliary device for drawing a spiral line.

Background

A fibonacci spiral, also known as a "golden spiral," is a spiral curve drawn according to a fibonacci number series, as shown in fig. 1. A fibonacci number sequence refers to a number sequence: 0. 1, 1,2. 3, 5, 8, 13, 21, … … mathematically, the fibonacci number series is defined as follows: f₀＝0，F₁＝1，F_n＝F_n-1+ Fn-2 (n.gtoreq.2). Many patterns of Fibonacci spirals exist in nature, which is the most perfect classic golden ratio in nature. For example, in the biological world, sunflower seeds follow a "fizeau's law" to diverge along a helical trajectory; each circle of screw thread on the parrot snail body runs in an equiangular spiral mode; the snail, shell, screw bend on the ox and sheep head, elephant nose, etc. in crustacean mollusk are also very similar to equiangular spiral shape. In bionics, spiral water turbine guide pipes, cutters on weed extractors and the like are invented based on the inspiration of biological spiral. Therefore, in the profound life evolution history book, the penetration of mathematical ideas makes the biological science more rigorous and profound, and also can make human beings more deeply explore and discover to create more practical and aesthetic works.

In order to make teenagers feel the beauty of mathematics, cultivate the aesthetic consciousness of teenagers and improve the practical ability of creating beauty, the Fibonacci spiral and the drawing thereof need to be introduced into related courses. At present, no special Fibonacci spiral line teaching drawing tool exists, and if the existing geometric drawing tool is adopted, the drawing can be performed only step by step, so that time and labor are wasted, visual feeling is inconvenient, and the learning interest of teenagers can be reduced.

Disclosure of Invention

The invention aims to provide a teaching drawing auxiliary device for drawing a spiral line, which can fill the blank of spiral line teaching drawing tools and improve drawing experience.

In order to achieve the purpose, the invention provides the following technical scheme:

a teaching drawing auxiliary device for drawing a spiral line comprises a scale rod and a rotating rod connected with the tail end of the scale rod, wherein scale scales are arranged on the scale rod;

a painting brush component is arranged on the rotating rod;

the scale rod is slidably connected with a circle center foot assembly, the circle center foot assembly comprises a circle center foot connector connected with the scale rod, a circle center connecting hole is formed in the circle center foot connector, and the bottom end of the circle center foot connector is connected with a circle center supporting foot;

the scale rod is also connected with a support assembly in a sliding manner, the support assembly comprises a support movable head connected with the scale rod, the support movable head is also provided with a support locking piece capable of being matched with the circle center connecting hole, the support movable head is provided with a movable head yielding position port capable of allowing the circle center foot assembly to penetrate through, the bottom end of the support movable head is rotatably connected with a support positioning cylinder, the top end of the support positioning cylinder is provided with a circular scale, and the support positioning cylinder is provided with a fixed cylinder yielding position port capable of allowing the circle center foot assembly to penetrate through;

when the supporting and locking piece is positioned in the circle center connecting hole, the circle center supporting leg is positioned in the area surrounded by the supporting and positioning cylinder and is coaxially arranged with the supporting and positioning cylinder.

Furthermore, a scale strip-shaped opening is formed in the middle of the scale rod;

the circle center pin connector is provided with a circle center pin sliding block which can be in sliding fit with the strip-shaped opening of the scale, two sides of the circle center pin sliding block are provided with an upper circle center pin sliding plate which can be in sliding fit with the top end of the scale rod, and the circle center connecting hole is formed in the upper circle center pin sliding plate;

the supporting movable head is provided with two supporting movable sliding blocks which can be respectively matched with two sides of the scale rod, the supporting movable sliding blocks are provided with movable head notches which can be matched with the circle center foot sliding plate in a putting-in mode, the supporting movable head is further provided with a supporting locking cavity which penetrates through the upper end and the lower end of the supporting movable head and is communicated with the movable head notches, and the supporting movable head is further provided with a locking limiting groove communicated with the supporting locking cavity;

the support locking piece is provided with the locking spacing ring that is located the locking spacing groove including the support locking pole that can run through the support locking chamber on the support locking pole, and the top of support locking pole is provided with locking butt head, the support locking piece is still including being located the locking elastic component of locking spacing inslot, and the upper and lower both ends of locking elastic component act on the cell wall of locking spacing groove and the top of locking spacing ring respectively for: the locking abutting head abuts against the supporting movable head, and the lower end part of the supporting locking rod can be positioned in the circle center connecting hole.

Furthermore, the supporting movable sliding block is provided with a concave movable sliding block limiting groove;

the scale rod is provided with a scale limiting bulge which can be matched with the movable slide block limiting groove in an embedded mode.

Furthermore, the supporting and positioning cylinder comprises a supporting cylinder section and a supporting and positioning section connected with the supporting cylinder section, and the supporting and positioning section is provided with at least two fixing assemblies;

the fixing assembly comprises an adsorption cylinder and a sucker connected to the bottom end of the adsorption cylinder, axial guide grooves communicated with an inner cavity of the adsorption cylinder are correspondingly formed in two sides of the adsorption cylinder, an adsorption supporting disk is arranged in the adsorption cylinder in a vertically movable mode, guide pins capable of penetrating through the axial guide grooves respectively are arranged on two sides of the adsorption supporting disk, and the bottom end of the adsorption supporting disk is connected with a piston capable of being matched with the adsorption cylinder through a supporting connecting rod;

the fixing component also comprises a support ring which can be matched with the thread of the adsorption cylinder body and can be used as a guide pin.

Furthermore, a corrugated pipe connected with the top end of the adsorption supporting disk is further arranged in the adsorption cylinder body.

Furthermore, the bottom end of the guide pin is also provided with a hemispherical guide pin bulge, and the bottom end of the guide pin bulge is in rolling contact with the top end of the support ring.

Further, the supporting and positioning section is connected to the bottom end of the supporting cylinder section, and the supporting cylinder section is in threaded connection with the supporting cylinder section.

Furthermore, the top end of the supporting cylinder section can be connected with a circumferential limiting piece in a vertically sliding manner;

the lower end of the supporting movable head is provided with a movable head circumferential limiting groove which can be matched with the circumferential limiting part, and the movable head circumferential limiting groove penetrates through the bottom end of the supporting movable head.

The painting brush assembly comprises a painting brush outer barrel, the painting brush outer barrel is provided with a hollow painting brush installation cavity, the painting brush installation cavity penetrates through the bottom end of the painting brush outer barrel, and an upper opening of the outer barrel, which is communicated with the painting brush installation cavity, is formed in the top end of the painting brush outer barrel;

a painting brush inner barrel is arranged in the painting brush outer barrel in a sliding mode, an external painting brush abutting ring is arranged on the inner surface of the painting brush outer barrel, an internal painting brush abutting ring is arranged on the outer surface of the painting brush inner barrel, and a painting brush elastic piece is further sleeved on the painting brush inner barrel;

the bottom end of the painting brush inner cylinder is connected with two symmetrically arranged clamping sleeves, the clamping sleeves are in a semicircular table shape, the radiuses of the clamping sleeves are gradually increased from top to bottom, and the inner side ends of the clamping sleeves are provided with clamping grooves;

when the upper end and the lower end of the painting brush elastic piece act on the bottom end of the painting brush inner abutting ring and the top end of the painting brush outer abutting ring respectively, the painting brush inner abutting ring abuts against the top end of the installation cavity, the upper end of the painting brush inner barrel penetrates through the upper opening of the outer barrel, and the clamping sleeve is accommodated in the painting brush outer barrel; when the inner brush barrel is pressed downwards, the clamping sleeve can extend out of the outer brush barrel.

Further, the dust collector also comprises a dust collection assembly;

the bottom of painting brush urceolus has cup jointed the ripple cover, the lateral wall of ripple cover passes through hose and dust absorption subassembly intercommunication.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, through the arrangement of the scale rod, reference can be provided for the movement amount of the circle center pin assembly, and the movement of the circle center pin assembly can be limited. Through the setting of supporting component, not only can provide the reference for the rotation volume of centre of a circle foot subassembly, still can abdicate centre of a circle foot subassembly rather than the separation, can clearly observe the movement track of centre of a circle foot subassembly like this to there is a clearer understanding to Fibonacci's number series. In addition, through the cooperation of centre of a circle foot subassembly and painting brush subassembly, can directly draw complete feronacci spiral, let the people directly perceivedly realize the beauty of mathematics.

2. According to the invention, the circle center pin sliding block is matched with the strip-shaped opening of the scale in a clamping manner, so that the circle center pin assembly can be conveniently moved along the scale rod, and a certain clamping and positioning effect can be realized on the circle center pin assembly. Through the clamping cooperation of the supporting movable sliding block and the two ends of the scale rod, the supporting component can be conveniently moved along the scale rod, and a certain clamping and positioning effect can be realized on the supporting component. Through the setting of supporting the locking piece, be convenient for realize the locking and the unblock operation to centre of a circle foot subassembly and supporting component's position.

3. According to the invention, the fixing component is arranged, so that the positioning cylinder can be fixed and supported detachably, and the reliability and stability of operation can be improved. Wherein, through the threaded connection of supporting location section and support section of thick bamboo section, still can be convenient for adjust the height position of supporting a location section of thick bamboo so that be suitable for the state of fixing or removing.

4. According to the invention, after the positioning section is fixedly supported and the position of the circle center foot component needs to be adjusted, the circumferential limiting piece can be moved, so that the circumferential limiting piece enters the circumferential limiting groove of the movable head, and thus the circumferential position of the movable head can be supported and locked, and the moving track of the circle center supporting foot can be observed only by moving the circle center foot component along the scale rod.

5. According to the invention, through the arrangement of the painting brush assembly, the painting brush inner barrel can be pressed to extend out of the clamping sleeve, so that the painting brush can be quickly assembled into the clamping groove; under the reset action of painting brush elastic component, two clamp covers can be accomodate in the painting brush urceolus, press from both sides the extrusion effect of cover through the painting brush urceolus to two, can fix the painting brush.

6. In the invention, when the selected painting brush is chalk, dust generated by the painting brush can be sucked by the dust suction assembly; the dust can be gathered in the corrugated cover through the arrangement of the corrugated cover; through the setting of elasticity rope, can shake the effect to the dust on the filter mantle to can effectively avoid the problem that the filter mantle blockked up.

Drawings

FIG. 1 is a schematic illustration of a Fibonacci spiral according to the present invention;

FIG. 2 is a schematic diagram of a circle center change trajectory of a Fibonacci spiral according to the present invention;

FIG. 3 is a schematic structural diagram of an embodiment of an instructional drawing aid for drawing a spiral line according to the invention;

FIG. 4 is a schematic structural diagram of an embodiment of an instructional drawing aid for drawing a spiral line according to the invention;

FIG. 5 is a schematic structural diagram of one embodiment of a center pin assembly and a support assembly of the teaching aid for drawing a spiral line according to the present invention;

FIG. 6 is a schematic structural diagram illustrating an embodiment of a supporting and positioning section of the teaching aid for drawing a spiral line according to the present invention;

FIG. 7 is a schematic structural diagram of an embodiment of a center pin assembly and a support assembly of the teaching aid for drawing a spiral line according to the present invention;

fig. 8 is a schematic structural diagram of a specific embodiment of a circle center foot connector and a supporting movable head in the teaching drawing auxiliary device for drawing a spiral line according to the present invention;

fig. 9 is a schematic structural diagram of a specific embodiment of a circle center foot connector and a supporting movable head in the teaching drawing auxiliary device for drawing a spiral line according to the present invention;

FIG. 10 is a schematic structural diagram illustrating an embodiment of a fixing member of the teaching drafting auxiliary device for drafting a spiral line according to the present invention;

FIG. 11 is an enlarged view taken at A of FIG. 10 in accordance with the present invention;

FIG. 12 is a schematic structural diagram illustrating an embodiment of a pen assembly of the teaching aid for drawing spiral lines according to the present invention;

FIG. 13 is a schematic structural diagram illustrating one embodiment of a height adjustment assembly of an instructional drawing aid for drawing a helical line in accordance with the present invention;

FIG. 14 is a schematic structural diagram of an embodiment of a jacket of the teaching drawing aid for drawing a spiral line according to the present invention;

FIG. 15 is a schematic structural diagram illustrating an exemplary embodiment of an instructional drawing aid for drawing a spiral according to the present invention;

FIG. 16 is a schematic structural diagram of a dust suction assembly of an embodiment of the teaching drawing aid for drawing spiral lines according to the present invention;

FIG. 17 is an enlarged view taken at B of FIG. 16 in accordance with the present invention;

FIG. 18 is a schematic structural diagram of a ruler bar, a circle center foot assembly and a supporting assembly in an auxiliary device for teaching drawing for drawing a spiral line according to an embodiment of the present invention;

fig. 19 is a schematic structural diagram of an embodiment of a scale bar, a circle center foot component and a support component in the teaching drawing auxiliary device for drawing a spiral line according to the present invention.

In the figure: 1. scale rod, 11, scale, 12, scale bar-shaped opening, 13, scale limit protrusion, 2, rotating rod, 21, rotating rod installation sleeve, 22, installation sleeve radial opening, 23, installation sleeve locking plate, 24, snap ring, 3, support component, 31, support movable head, 311, movable head yielding port, 312, movable head gap, 313, support locking cavity, 314, locking limit groove, 315, support movable slider, 316, movable slider limit groove, 317, movable head circumferential limit groove, 318, lower end of support locking cavity, 319, movable head connecting section, 32, support positioning cylinder, 321, circular scale, 322, fixed cylinder yielding port, 323, positioning cylinder anti-slip ring, 324, positioning cylinder locking rod, 325, positioning cylinder connector, 33, support locking piece, 331, support, 332, locking limit ring, 333, locking butt head, 334, locking elastic piece, 335. a lower end part of the supporting locking rod, 34, a supporting barrel section, 341, a circumferential limiting piece, 342, a barrel section anti-drop ring, 343, a limiting piece upper puller, 344, a limiting piece gap, 345, an upper pulling gap, 346, a limiting piece clamping groove, 35, a supporting positioning section, 351, a positioning section thread bulge, 352, a fixing component yielding port, 4, a fixing component, 41, an adsorbing barrel body, 42, a sucker, 43, an adsorbing supporting disk, 44, a corrugated pipe, 45, a piston, 46, a guide pin, 47, a supporting connecting rod, 48, a guide pin bulge, 49, a supporting ring, 5, a circle center foot component, 51, a circle center foot connecting head, 511, a circle center connecting hole, 512, a circle center foot sliding block, 513, an upper circle center foot sliding plate, 514, a lower circle center foot sliding plate, 52, a circle center supporting foot, 521, a supporting foot ball, 53, a circle center foot handle, 6, a painting brush, 71, an angle locking piece, 72, a height locking piece, 8, Paint brush subassembly, 81, painting brush urceolus, 811, the outer butt ring of painting brush, 812, urceolus upper shed, 813, painting brush installation cavity, 82, the painting brush inner tube, 821, the interior butt ring of painting brush, 822, inner tube pressing piece, 83, painting brush elastic component, 84, the clamp cover, 841, the clamp groove, 85, the ripple cover, 9, dust absorption subassembly, 91, the hose, 92, the dust collection box, 93, the air pump, 94, the suction tube, 95, the filter mantle, 96, the mounting groove, 97, the spacer pin, 98, the elastic cord, 101, first segmental arc, 102, second segmental arc, 103, the third segmental arc.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 19, an auxiliary device for teaching and drawing for drawing spiral lines includes a scale rod 1 and a rotating rod 2 connected to the end of the scale rod 1, wherein the scale rod 1 is provided with scale marks 11;

a painting brush component 8 is arranged on the rotating rod 2;

the scale rod 1 is slidably connected with a circle center foot assembly 5, the circle center foot assembly 5 comprises a circle center foot connector 51 connected with the scale rod 1, a circle center connecting hole 511 is formed in the circle center foot connector 51, and the bottom end of the circle center foot connector 51 is connected with a circle center supporting foot 52;

the scale rod 1 is also connected with a supporting component 3 in a sliding manner, the supporting component 3 comprises a supporting movable head 31 connected with the scale rod 1, a supporting locking piece 33 capable of being matched with the circle center connecting hole 511 is further arranged on the supporting movable head 31, a movable head yielding hole 311 capable of allowing the circle center foot component 5 to penetrate through is formed in the supporting movable head 31, the bottom end of the supporting movable head 31 is rotatably connected with a supporting and positioning cylinder 32, the top end of the supporting and positioning cylinder 32 is provided with a circular scale 321, and a fixed cylinder yielding hole 322 capable of allowing the circle center foot component 5 to penetrate through is formed in the supporting and positioning cylinder 32;

when the supporting and locking member 33 is located in the center connecting hole 511, the center supporting leg 52 is located in the area surrounded by the supporting and positioning cylinder 32 and is disposed coaxially with the supporting and positioning cylinder 32.

In this embodiment, the scale rod 1 may be fixedly connected to the rotating rod 2. The scale rod 1 can also be rotatably connected with the rotating rod 2, an angle locking piece 71 is arranged at the joint of the scale rod 1 and the rotating rod 2, the angle locking piece 71 can be selected from bolts, nuts, screws and the like, and therefore the distance between the painting brush assembly 8 and the circle center pin assembly 5 can be conveniently adjusted.

In order to adjust the height position of painting brush subassembly 8 dwang 2 relatively for convenience, the end of dwang 2 can be provided with the height adjustment subassembly, the height adjustment subassembly includes dwang installation cover 21, installation cover radial opening 22 has been seted up on the dwang installation cover 21, dwang installation cover 21 all extends in installation cover radial opening 22's both ends and is provided with installation cover lockplate 23, the height adjustment subassembly is still including the height locking piece 72 that can run through two sets of lockplates 23, height locking piece 72 optional use bolt and nut, the screw etc. When height lock 72 presses against both mounting sleeve locking plates 23, turret mounting sleeve 21 may be caused to clamp brush assembly 8.

The bottom end of the circle center foot component 5 and the bottom end of the supporting component 3 are positioned on the same horizontal line. In order to observe the circular scale 321 conveniently, the ruler stem 1 can be made of transparent materials. The supporting member 3 may be made of transparent material to facilitate observation of the position of the center supporting leg 52.

In this embodiment, brush 6 is mounted on brush assembly 8, which may be chalk. Firstly, referring to the scale 11, adjusting the positions of the circle center pin assembly 5 and the support assembly 3 to enable the distance between the circle center support pin 52 and the painting brush assembly 8 to be one unit, and then locking the positions of the support assembly 3 and the circle center pin assembly 5 through a support locking piece; referring to the circular scale 321, the relative position between the supporting and positioning cylinder 32 and the supporting movable head 31 is adjusted; placing the circle center foot assembly 5 and the support assembly 3 on a drawing board to be drawn (which can be a common blackboard), enabling the circle center support foot 52 to be located at the circle center position, fixing the position of the support positioning cylinder 32, and then rotating the circle center foot connecting head 51, so that the scale rod 1, the support movable head 31, the rotating rod 2 and the painting brush assembly 8 are driven to rotate by taking the circle center support foot 52 as an axis, referring to the circular scale 321, and when the circle center foot assembly and the supporting assembly rotate by 90 degrees, completing a first arc-shaped section; when the second arc-shaped section is manufactured, the distance between the circle center supporting leg 52 and the painting brush component 8 is continuously kept by one unit, the relative position between the supporting and positioning cylinder 32 and the supporting movable head 31 is adjusted, as shown in fig. 18, the fixed cylinder yielding position port 322 is positioned at the position of the right side end of the supporting and positioning cylinder 32, the circle center is kept unchanged, the circle center leg connector 51 is rotated to 90 degrees again, the second arc-shaped section is completed, and at this time, the scale rod 1 is just positioned in a state of being parallel to the fixed cylinder yielding position port 322, as shown in fig. 19; when the third arc-shaped segment is manufactured, as shown in fig. 2, one unit of the circle center leg assembly 5 (two units of the distance between the circle center supporting leg 52 and the painting brush assembly 8) needs to be moved to the right side, the position of the supporting and positioning cylinder 32 is fixed, the supporting and locking member 33 is unlocked to lock the circle center leg assembly 5, the circle center leg connector 51 is slid to drive the circle center supporting leg 52 to pass through the movable head clearance opening 311 and the fixed cylinder clearance opening 322, the scale rod 1 is extended and the scale 11 is referenced to move one unit to the right side, as shown in fig. 4, the changing track of the circle center can be observed through the separation arrangement of the circle center leg assembly 5 and the supporting assembly 3, after the circle center supporting leg 52 is moved to the right position, the supporting and positioning cylinder 32 is moved to surround the circle center leg assembly 5 through the sliding and supporting and locking member 33 is used to lock the positions of the supporting and positioning cylinder and the relative positions of the supporting and positioning cylinder 31 and 32 are adjusted, and the fixed cylinder clearance hole 322 is located at the position right in front of the supporting and positioning cylinder 32, and then the circle center pin connector 51 is rotated, so that the scale rod 1, the supporting movable head 31, the rotating rod 2 and the painting brush assembly 8 are driven to rotate by taking the circle center supporting pin 52 as the axis, the circular scale 321 is referred, and when the rotation is 90 degrees, the drawing of a third arc-shaped section is completed. The subsequent arc segments are also drawn with reference to the method described above.

In the process of drawing by adopting the embodiment, reference can be provided for the movement amount of the circle center foot component 5 through the arrangement of the scale rod, and the movement of the circle center foot component 5 can be limited. Through the setting of supporting component 3, not only can provide the reference for centre of a circle foot subassembly 3's rotation volume, still can let a centre of a circle foot subassembly 5 separate rather than, can clearly observe centre of a circle foot subassembly 5's removal orbit like this to there is a clearer understanding to Fibonacci series.

In order to reduce the friction between the circle center supporting foot 52 and the drawing board, a supporting foot ball 521 may be disposed at the bottom end of the circle center supporting foot 52 in a rolling manner.

In order to realize the rotatable connection between the supporting movable head 31 and the supporting positioning cylinder 32, the supporting movable head 31 further has a movable head connecting section 319 capable of being connected to the bottom ends of the two supporting movable sliding blocks 315, a positioning cylinder connecting groove 324 with a small opening and a large inner cavity can be formed at the top end of the supporting positioning cylinder 32, and a positioning cylinder connecting head 325 capable of being rotatably matched with the positioning cylinder connecting groove 324 is connected to the bottom end of the movable head connecting section 319.

In order to improve the stability of the relative rotation between the movable supporting head 31 and the positioning supporting cylinder 32, the relative rotation angle between the movable supporting head 31 and the positioning supporting cylinder 32 can be controlled at 90 °, and after the arc-shaped segment is drawn each time, the relative position between the movable supporting head 31 and the positioning supporting cylinder 32 is adjusted, and then the next arc-shaped segment is drawn.

A movable sliding block yielding port for the circle center pin assembly 5 to pass through is reserved between the two supporting movable sliding blocks 315, a connecting section yielding port for the circle center pin assembly 5 to pass through is formed in the movable head connecting section 319, and a movable head yielding port 311 is formed by the movable sliding block yielding port and the connecting section yielding port together.

To facilitate rotation of the circle center pin assembly 5, a circle center pin handle 53 may be connected to the top end of the circle center pin connector 51.

In order to fix the support positioning cylinder 32, a positioning cylinder anti-slip ring 323 may be provided on the outer surface of the support positioning cylinder 32.

In order to realize the movable connection between the circle center foot connector 51 and the scale rod 1 and the movable connection between the support movable head 31 and the scale rod 1, preferably, the middle part of the scale rod 1 is provided with a scale strip-shaped opening 12;

the circle center pin connector 51 is provided with a circle center pin sliding block 512 which can be in sliding fit with the scale strip-shaped opening 12, two sides of the circle center pin sliding block 512 are provided with an upper circle center pin sliding plate 513 which can be in sliding fit with the top end of the scale rod 1, and the circle center connecting hole 511 is formed in the upper circle center pin sliding plate 513;

the supporting movable head 31 is provided with two supporting movable sliding blocks 315 which can be respectively matched with two sides of the scale rod 1, each supporting movable sliding block 315 is provided with a movable head notch 312 which can be matched with the circle center foot sliding plate 513 in a putting mode, the supporting movable head 31 is further provided with a supporting locking cavity 313 which penetrates through the upper end and the lower end of the supporting movable head 31 and is communicated with the movable head notch 312, and the supporting movable head 31 is further provided with a locking limiting groove 314 communicated with the supporting locking cavity 313;

the supporting and locking member 33 includes a supporting and locking rod 331 capable of penetrating through the supporting and locking cavity 313, a locking and limiting ring 332 disposed in the locking and limiting groove 314 is disposed on the supporting and locking rod 331, a locking abutting head 333 is disposed at the top end of the supporting and locking rod 331, the supporting and locking member 33 further includes a locking elastic member 334 disposed in the locking and limiting groove 314, and the upper and lower ends of the locking elastic member 334 respectively act on the groove wall of the locking and limiting groove 314 and the top end of the locking and limiting ring 332, so that: the locking abutting head 333 abuts on the supporting movable head 31, and the lower end part of the supporting locking rod 331 can be positioned in the center connecting hole 511.

In this embodiment, the circle center foot sliding block 512 is engaged with the scale bar-shaped opening 12, so that the circle center foot assembly 5 can be moved along the scale rod 1 conveniently, and the circle center foot assembly 5 can be clamped and positioned to some extent. Through the clamping cooperation of supporting movable slider 315 and scale pole 1 both ends, both can be convenient for remove supporting component 3 along scale pole 1, can have certain joint positioning action to supporting component 3 again.

The movable head 31 and the circle center pin connector 51 can be conveniently locked and supported by matching the movable head notch 312 with the circle center pin sliding plate 513. When locking, the positions of the circle center pin connector 51 and the support movable head 31 are adjusted, so that the support locking cavity 313 is opposite to the circle center connecting hole 511, the lower end part of the support locking rod 331 is abutted in the circle center connecting hole 511 under the action of the locking elastic piece 334, downward pressure can be applied to the circle center pin connector 51, and the stability of connection of the circle center pin assembly 5 and the scale rod 1 is improved. When the unlocking is needed, the supporting locking rod 331 is pulled upwards until the supporting locking rod exits the circle center connecting hole 511. The locking limiting groove 314 is matched with the locking limiting ring 332 to limit the up-and-down movement of the supporting locking rod 331.

To facilitate locking the elevated height position of support lock bar 331, the lower end 335 of support lock bar 331 may be threadably coupled to the lower end 318 of support lock chamber 313.

In order to further improve the stability of the clamping fit between the circle center foot connector 51 and the scale rod 1, preferably, lower circle center foot sliding plates 514 capable of being matched with the bottom end of the scale rod 1 are further arranged on two sides of the circle center foot sliding block 512.

In order to further improve the stability of the clamping fit between the supporting movable head 31 and the scale bar 1, preferably, the supporting movable sliding block 315 is provided with a concave movable sliding block limiting groove 316;

the scale rod 1 is provided with a scale limiting bulge 13 which can be matched with the movable slide block limiting groove 316 in an embedded mode.

In order to fix the supporting and positioning cylinder 32, preferably, the supporting and positioning cylinder 32 includes a supporting cylinder section 34 and a supporting and positioning section 35 connected to the supporting cylinder section 34, and the supporting and positioning section 35 has at least two fixing assemblies 4.

In this embodiment, if the fixing member 4 is applied to a drawing board having metal, the fixing member 4 may be a magnet, and as shown in fig. 6, three fixing members may be provided, and the three fixing members 4 are distributed along the bottom end of the supporting and positioning section 35. The position of the positioning cylinder 32 can be fixed and supported directly by placing the fixing member 4 on the drawing board.

If the fixing component is applied to a common drawing board, preferably, the fixing component 4 includes an adsorption cylinder 41 and a suction cup 42 connected to the bottom end of the adsorption cylinder 41, axial guide slots 411 communicated with the inner cavity of the adsorption cylinder 41 are correspondingly formed on two sides of the adsorption cylinder 41, an adsorption supporting disc 43 is arranged in the adsorption cylinder 41 in a manner of being capable of moving up and down, guide pins 46 capable of respectively passing through the axial guide slots 411 are arranged on two sides of the adsorption supporting disc 43, and the bottom end of the adsorption supporting disc 43 is connected with a piston 45 capable of being matched with the adsorption cylinder 41 through a supporting connecting rod 47;

the fixing assembly 4 further includes a support ring 49 capable of screw-fitting with the adsorption cylinder 41 and acting as the guide pin 46.

When the drawing board is applied, the movable suction cup 42 is contacted with the drawing board, and the suction cup 42 can be adsorbed on the drawing board. After the positions of the circle center foot assembly 5 and the supporting assembly 3 are adjusted, the supporting ring 49 is manually rotated, the supporting ring 49 rotates and performs threaded motion with the adsorption cylinder 41, the supporting ring 49 moves towards the direction close to the supporting cylinder section 34, the supporting ring 49 moves to drive the guide pin 46 to move, the guide pin 46 drives the adsorption supporting plate 43 to move, the adsorption supporting plate 43 drives the piston 45 to slide in the adsorption cylinder 41, negative pressure is formed between the sucker 42 and the blackboard, and the adsorption force of the sucker 42 is further improved. When it is desired to adjust the position of the support assembly 3 again, the support ring 49 is reversed, so that the piston 45 is reset and the support assembly 3 can be easily moved.

Preferably, a bellows 44 connected to the top end of the adsorption support disk 43 is further disposed in the adsorption cylinder 41.

In this embodiment, the bellows 44 can improve the vertical movement stability of the adsorption support tray 43.

In order to reduce friction between the guide pin 46 and the support ring 49, it is preferable that the bottom end of the guide pin 46 is further provided with a guide pin protrusion 48 having a hemispherical shape, and the bottom end of the guide pin protrusion 48 is in rolling contact with the top end of the support ring 49.

In order to adjust the height position of the supporting and positioning section 35 relative to the supporting cylinder section 34, preferably, the supporting and positioning section 35 is connected to the bottom end of the supporting cylinder section 34, and the supporting cylinder section 34 is in threaded connection with the supporting cylinder section 34.

In this embodiment, when the supporting component 3 needs to be fixed, the bottom ends of the supporting and positioning sections 35 and the bottom ends of the circle center supporting feet 52 can be located on the same horizontal line; when it is necessary to move the supporting component 3, the bottom end of the supporting and positioning section 35 can be slightly higher than the bottom end of the circle center supporting foot 52.

In order to facilitate the control of the height position of the supporting and positioning section 35 relative to the supporting cylinder section 34, an inward concave cylinder section thread groove 342 is formed on the inner wall surface of the lower end part of the supporting cylinder section 34, and a cylinder section anti-drop ring 343 is further extended inwards from the bottom end of the supporting cylinder section 34; the support positioning section 35 has a positioning section threaded projection 351 capable of being threadedly coupled to the barrel section threaded groove 342.

Support and seted up a section of thick bamboo section on 34 and let a mouthful 344, support and seted up the location section on 35 and let a mouthful 352, support two at least fixed subassemblies 4 of location section 35 and be formed with fixed subassembly jointly and let a mouthful 352, the section of thick bamboo section lets a mouthful 344, location section let a mouthful 352 and fixed subassembly let a mouthful 352 can be located same circumference position and be formed with fixed section of thick bamboo jointly and let a mouthful 322.

Preferably, a circumferential limiting member 341 is connected to the top end of the supporting cylinder section 34 in a vertically slidable manner;

the lower end of the supporting movable head 31 is provided with a movable head circumferential limiting groove 317 capable of being matched with the circumferential limiting member 341, and the movable head circumferential limiting groove 317 penetrates through the bottom end of the supporting movable head 31.

In this embodiment, after the positioning section 35 is fixed and the position of the circle center pin assembly 5 needs to be adjusted, in order to prevent the movable head 31, the circle center pin connector 51 and the scale bar 1 from rotating under the action of their own weights, the circumferential position-limiting member 341 may be moved, so that the circumferential position-limiting member 341 enters the movable head circumferential position-limiting groove 317, and thus, the circumferential position of the movable head 31 may be locked. Thus, the moving track of the circle center supporting foot 52 can be observed only by moving the circle center foot assembly 5 along the scale rod 1.

The top end of the supporting cylinder section 34 is provided with a limiting member clamping groove 346, the circumferential limiting member 341 is clamped in the limiting member clamping groove 346, the circumferential limiting member 341 has a limiting member upper pull head 343, when the circumferential limiting member 341 is clamped at the bottommost of the limiting member clamping groove 346, the limiting member upper pull head 343 protrudes out of the top end of the supporting cylinder section 34, the circumferential limiting member 341 also has a limiting member gap 344 corresponding to the limiting member upper pull head 343, and the limiting member gap 344 can be shifted to support the normal rotation of the movable head 31. To facilitate moving up the stopper upper slider 343, an upper pull notch 345 may be provided in the stopper upper slider 343.

Preferably, the brush assembly 8 comprises a brush outer barrel 81, the brush outer barrel 81 is provided with a hollow brush mounting cavity 813, the brush mounting cavity 813 penetrates through the bottom end of the brush outer barrel 81, and the top end of the brush outer barrel 81 is provided with an upper outer barrel opening 812 communicated with the brush mounting cavity 813;

a brush inner barrel 82 is arranged in the brush outer barrel 81 in a sliding mode, a brush outer abutting ring 811 is arranged on the inner surface of the brush outer barrel 81, a brush inner abutting ring 821 is arranged on the outer surface of the brush inner barrel 82, and a brush elastic piece 83 is further sleeved on the brush inner barrel 82;

the bottom end of the painting brush inner cylinder 82 is connected with two symmetrically arranged clamping sleeves 84, the clamping sleeves 84 are in a semicircular table shape, the radius of the clamping sleeves 84 is gradually increased from top to bottom, and the inner side end of each clamping sleeve 84 is provided with a clamping groove 841;

when the upper end and the lower end of the brush elastic member 83 respectively act on the bottom end of the brush inner abutting ring 821 and the top end of the brush outer abutting ring 811, the brush inner abutting ring 821 abuts on the top end of the mounting cavity 811, the upper end of the brush inner cylinder 82 passes through the outer cylinder upper opening 812, and the clamping sleeve 84 is accommodated in the brush outer cylinder 81; collet 84 extends out of brush barrel 81 when brush barrel 82 is depressed.

In this embodiment, when replacing the painting brush 6, the clamping sleeve 84 is pushed by the painting brush inner barrel 82 to extend out of the painting brush outer barrel 81, the two clamping sleeves 84 are in an expansion state due to the fact that the tightening effect of the painting brush outer barrel 81 is lost, the painting brush 6 is placed at the clamping groove 841, the painting brush inner barrel 82 is loosened, the painting brush elastic piece 83 resets, so that the two clamping sleeves 84 move into the painting brush outer barrel 81, the painting brush outer barrel 81 extrudes the clamping sleeves 84, and therefore the chalk 6 can be fixed, and the chalk 6 can be replaced more conveniently.

To improve the convenience of moving the brush inner cylinder 82, an inner cylinder pressing member 822 may be provided at the top end of the brush inner cylinder 82.

When the painting brush 6 is made of chalk, the painting brush preferably further comprises a dust suction assembly 9;

the bottom of painting brush urceolus 81 cup joints corrugated cover 85, the lateral wall of corrugated cover 85 passes through hose 91 and dust absorption subassembly 9 intercommunication.

In this embodiment, the dust generated by brush 6 is collected in bellows 85, and when suction assembly 9 is activated, it can be drawn out through hose 91.

In order to fix the hose 91, the rotating rod 2 can be fixedly provided with a snap ring 24, and the hose 91 is clamped in the snap ring 24. The hose 91 is fixed by providing the snap ring 24.

Dust collection assembly 9 can set up on centre of a circle foot connector 51, dust collection assembly 9 can include dust collection box 92, fixed mounting has air pump 93 on the dust collection box 92, suction tube 94 and dust collection box 92 sliding connection of air pump 93, the outside sliding sleeve of suction tube 94 has cup jointed filter bowl 95, mounting groove 96 has been seted up to the lateral wall of suction tube 94, there is spacer pin 97 lateral wall of filter bowl 95 through threaded connection, sliding connection has spacer pin 97 in the mounting groove 96, the last fixed connection elastic cord 98 of dust collection box 92, elastic cord 98's the other end and filter bowl 95 fixed connection. The hose 91 communicates with a dust box 92.

During the application, start air pump 93, air pump 93 starts the interior air of suction dust-collecting box 92 for form the negative pressure in the dust-collecting box 92, make the dust that produces when hose 91 is to the painting brush suction, and then make the dust follow hose 91 get into dust-collecting box 92 in, and then avoid the dust to diffuse and cause the injury to the human body. Dust entering the dust collection box 92 is filtered by the filter cover 95 and stays in the dust collection box 92, after the filter cover 95 is blocked, the air pump 93 pumps to enable the filter cover 95 to move towards the air pump 93, the elastic rope 98 is stretched, when the air pump 93 stops pumping, the elastic action of the elastic rope 98 enables the filter cover 95 to move towards the direction far away from the air pump 93, the limiting pin 97 on the filter cover 95 slides in the mounting groove 96 and collides with the suction pipe 94 to vibrate so that dust falls off, the filter cover 95 can be prevented from being blocked, and the dust collection efficiency is ensured.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.