CN216708873U - Fixed point drawing device applied to vertical blackboard - Google Patents
Fixed point drawing device applied to vertical blackboard Download PDFInfo
- Publication number
- CN216708873U CN216708873U CN202220078056.9U CN202220078056U CN216708873U CN 216708873 U CN216708873 U CN 216708873U CN 202220078056 U CN202220078056 U CN 202220078056U CN 216708873 U CN216708873 U CN 216708873U
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- Prior art keywords
- fixed point
- landing leg
- vertical
- supporting leg
- blackboard
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- 230000008093 supporting effect Effects 0.000 claims abstract description 48
- 238000010422 painting Methods 0.000 claims description 34
- 230000001788 irregular Effects 0.000 abstract description 4
- 238000007493 shaping process Methods 0.000 abstract description 3
- 101150038956 cup-4 gene Proteins 0.000 description 12
- 238000001125 extrusion Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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Abstract
The utility model discloses a fixed point drawing device applied to a vertical blackboard, which comprises a fixed point supporting leg perpendicular to the surface of the vertical blackboard, wherein the fixed point supporting leg is movably connected with a drawing pen supporting leg capable of rotating randomly compared with the fixed point supporting leg, a positioning device is also arranged on the end part side of the fixed point supporting leg, which is in contact with the surface of the vertical blackboard, and a driving device for rotating the fixed point supporting leg is also arranged on the end part side of the fixed point supporting leg, which is opposite to the positioning device. This fixed point drawing ware when drawing, keeps the vertical teaching blackboard surface of fixed point landing leg perpendicular to all the time, during drawing rotatory fixed point landing leg can, can not cause the incline of fixed point landing leg, and then can and blackboard surface between form stable contact, improve the drawing shaping rate, save the length of time of drawing. The problem of adopt simple structure's teaching compasses when drawing at present, both sides landing leg all form the contained angle with vertical blackboard surface, often cause the figure of drawing irregular, need clean the redrawing is solved.
Description
Technical Field
The utility model relates to the technical field of teaching drawing tools, in particular to a fixed point drawing device applied to a vertical blackboard.
Background
The teaching drawing tool comprises a straight ruler, compasses, a protractor, a set square and the like, and is commonly used in mathematical teaching. The compasses are as the higher teaching drawing apparatus of rate of utilization, and carry along with teaching mr on class, and it has articulated landing leg of each other, and one side landing leg has top, commonly uses as centre of a circle fulcrum, and the end of the landing leg of opposite side presss from both sides holds the drawing pen, is generally the chalk, through rotatory for the chalk draws the figure of rated radius on vertical blackboard.
When using the compasses to draw, because the drawing body is vertical blackboard usually, stand and draw and do not have stable strong point, its both sides landing leg all forms the contained angle with vertical blackboard surface, at the in-process of rotatory drawing, both sides landing leg all can not play with vertical blackboard surface relatively stable state, often cause the figure of drawing irregular, need clean and draw again, and the problem of extravagant teaching time.
Disclosure of Invention
Aiming at the problems, the utility model aims to provide the fixed point drawing device applied to the vertical blackboard, when the fixed point drawing device is used for drawing, the fixed point supporting leg is kept to be always vertical to the surface of the vertical teaching blackboard, and the fixed point supporting leg is rotated during drawing, so that the fixed point supporting leg cannot be deflected, and further stable contact can be formed between the fixed point supporting leg and the surface of the blackboard, the drawing forming rate is improved, and the drawing time is saved.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a be applied to fixed point drawing ware of vertical blackboard which characterized in that: fixed point drawing ware includes the vertical blackboard surface fixed point landing leg of perpendicular to, swing joint has on the fixed point landing leg compare in but fixed point landing leg arbitrary rotatory painting brush landing leg fixed point landing leg contact the end side on vertical blackboard surface still is provided with positioner, and with positioner is opposite the end side of fixed point landing leg still be provided with the rotatory drive arrangement of fixed point landing leg.
Preferably, the fixed point supporting leg is vertically provided with an adjusting bar hole near the upper part of the driving device, and the end part of the painting brush supporting leg is hinged and selectively fastened or vertically moved in the adjusting bar hole.
Preferably, a positioning tip is arranged at the end part of the fixed-point supporting leg, the positioning device comprises a pressing plate which is rotatably arranged at the end part of the top side of the positioning tip, a rubber suction cup which annularly wraps the positioning tip is fixed on the outer side of the pressing plate, and the outer end part of the rubber suction cup exceeds the outer end part of the positioning tip.
Preferably, the rubber suction cup is provided with an inner cavity, the side wall of the rubber suction cup is provided with an exhaust micropore communicated with the inner cavity, and the outer end part of the rubber suction cup is provided with an inward annular inclined surface.
Preferably, the driving device comprises a hand pressing plate which is horizontally and vertically arranged at the end part of the fixed point supporting leg on the opposite side of the positioning tip and is rotatably arranged, and a rotary driving disc which is larger than the outer diameter of the hand pressing plate is further arranged on the fixed point supporting leg at the bottom of the hand pressing plate.
The utility model has the beneficial effects that: this fixed point drawing ware when drawing, keeps the vertical teaching blackboard surface of fixed point landing leg perpendicular to all the time, during drawing rotatory fixed point landing leg can, can not cause the incline of fixed point landing leg, and then can and blackboard surface between form stable contact, improve the drawing shaping rate, save the length of time of drawing. The problem of adopt simple structure's teaching compasses all with vertical blackboard surface formation contained angle when drawing at present, at the rotatory in-process of drawing, both sides landing leg all can not play with vertical blackboard surface relatively stable state, often causes the figure of drawing irregular, need clean and draw again, and extravagant teaching time is solved.
Drawings
FIG. 1 is a schematic view of the overall structure of the fixed-point drawing device of the present invention.
FIG. 2 is an enlarged view A of FIG. 1 of the present invention (the rubber suction cup is in a compressed state).
FIG. 3 is a schematic view of the rubber suction cup of the present invention in an initial state.
FIG. 4 is a top view of the fixed point leg of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following further describes the technical solution of the present invention with reference to the drawings and the embodiments.
Referring to the attached drawings 1-4, the fixed point drawing device applied to the vertical blackboard comprises a fixed point supporting leg 1 perpendicular to the surface of the vertical blackboard, and a drawing pen supporting leg 2 capable of rotating freely compared with the fixed point supporting leg 1 is movably connected to the fixed point supporting leg 1. Preferably, as shown in fig. 1, a barrel 21 for inserting a brush (preferably chalk) is further provided at the end of the brush leg 2, and the barrel 21 may be set to different specifications according to different brushes. This fixed point drawing instrument will fixed point landing leg 1 vertical teaching blackboard surface of perpendicular to, adjust painting brush landing leg 2 after that and compare in the angle that opens (drawing) of fixed point landing leg 1, adjust and accomplish back with painting brush landing leg 2 for fixed point landing leg 1 fastening, then drive fixed point landing leg 1 with the vertical blackboard surface rotation of perpendicular to, the painting brush through 2 tip of painting brush landing leg is on class rapid stabilization's the required figure of drawing on vertical blackboard.
This fixed point drawing instrument is through the vertical teaching blackboard surface of 1 perpendicular to with fixed point landing leg, has changed teaching compasses that adopt simple structure at present when drawing, and both sides landing leg all forms the contained angle with vertical blackboard surface, and at the in-process of rotatory drawing, both sides landing leg all play with vertical blackboard surface relatively stable state, often cause the drawing that draws irregular, need clean and draw again, and the problem of extravagant teaching time. And this fixed point drawing device is when drawing, keeps fixed point landing leg 1 perpendicular to vertical teaching blackboard surface all the time, and the rotation fixed point landing leg 1 can during drawing, can not cause the incline of fixed point landing leg 1, and then can form stable contact with the blackboard surface, improves the drawing shaping rate, saves the drawing time.
In order to further improve the drawing stability of the fixed point drawing instrument, as shown in fig. 1, a positioning device is further disposed on the end side of the fixed point leg 1 contacting the surface of the vertical blackboard, and the fixed point leg 1 can be stably contacted with the surface of the blackboard through the positioning device, so that the rotational stability when the fixed point leg 1 rotates to draw a picture is improved.
In order to improve the ease of operation of the fixed point plotter, as shown in fig. 1 and 4, a driving device for rotating the fixed point leg 1 is further provided on the end portion side of the fixed point leg 1 opposite to the positioning device. After the fixed-point supporting leg 1 is stably contacted with the surface of a blackboard through the positioning device and the drawing angle of the painting brush supporting leg 2 is adjusted, the driving device can rapidly drive the fixed-point supporting leg 1 to rotate, and the drawing action of the painting brush supporting leg 2 can be rapidly completed.
In order to facilitate the adjustment of the drawing angle of the brush leg 2, as shown in fig. 1, an adjusting bar hole 101 is vertically formed in the fixed point leg 1 near the upper portion of the driving device, and the end of the brush leg 2 is hinged and selectively fastened or vertically moved in the adjusting bar hole 101. Specifically, a butterfly bolt 7 is rotatably arranged at the top end of the painting brush supporting leg 2 in a penetrating manner, and after the butterfly bolt 7 penetrates through the adjusting strip hole 101, a fastening nut (not shown in the figure) tightly attached to the back side of the painting brush supporting leg 2 is sleeved on the butterfly bolt. During operation, after the butterfly bolt 7 is slightly loosened, the painting brush supporting leg 2 is rotated to a proper painting angle, then the painting brush supporting leg 2, the butterfly bolt 7 and the fastening nut are driven to move along the length direction of the adjusting strip hole 101, so that a painting brush at the end part of the painting brush supporting leg 2 can contact the surface of a blackboard, the butterfly bolt 7 is screwed at last, and the painting angle and the painting position of the painting brush supporting leg 2 are adjusted and fixed.
Specifically, as shown in fig. 2-3, a positioning tip 11 is arranged at an end of the fixed-point supporting leg 1, the positioning device includes a pressing plate 3 rotatably arranged at an end of a top side of the positioning tip 11, a rubber suction cup 4 annularly wrapping the positioning tip 11 is fixed at an outer side of the pressing plate 3, and an outer end of the rubber suction cup 4 exceeds an outer end of the positioning tip 11. When the fixed-point supporting leg 1 is in fastening contact with the surface of the blackboard, the rubber sucker 4 is compressed by external force to be extruded and retracted towards the direction of the pressing plate 3, the positioning tip 11 is leaked, the positioning tip 11 is correspondingly contacted with the drawing positioning mark on the surface of the blackboard, then the external force for extruding the rubber sucker 4 is cancelled, and the outer end part of the rubber sucker 4 is contacted with the surface of the blackboard to be attached tightly. Under the normal unstressed condition, the outer end part of the rubber sucker 4 exceeds the outer end part of the positioning tip 11, so that after the positioning tip 11 is correspondingly contacted with the drawing positioning marks on the surface of the blackboard, the contact force is kept unchanged, the rubber sucker 4 is extruded and deformed through the extrusion action of the pressing plate 3, meanwhile, the outer end part of the rubber sucker is tightly attached to the surface of the blackboard, stable contact support is formed between the fixed-point supporting leg 1 and the surface of the blackboard, and the fixed-point supporting leg 1 is prevented from being deviated in the rotary drawing process. During the rotation of the fixed point supporting leg 1, the pressing plate 3 and the rubber suction cup 4 are kept still relative to the blackboard surface to provide effective supporting function.
In order to further improve the tight power of inhaling on rubber suction cup 4 and blackboard surface, rubber suction cup 4 has inner chamber 401, seted up on its lateral wall with the exhaust micropore 402 that inner chamber 401 link up, hug closely the in-process of deformation at extrusion rubber suction cup 4 and blackboard surface, partial air in its inner chamber 401 can discharge through exhaust micropore 402, under the packing force that lasts, exhaust micropore 402 then through the deformation of rubber suction cup 4 and the shutoff, avoid outside air to enter into inner chamber 401 for the air capacity that reduces in the inner chamber 401 can form certain negative pressure and inhale tight effect, improves the stable supporting effect of rubber suction cup 4 to fixed point landing leg 1.
Further, in order to make the end of the rubber suction cup 4 still cling to the blackboard surface under the action of the pressing deformation, as shown in fig. 3, the outer end of the rubber suction cup 4 is provided with an inward annular inclined surface 4 a. Because the rubber suction cup 4 can be outwards protruded from the two side walls under the action of extrusion deformation, the side walls of the rubber suction cup all form an arc-shaped structure, so that the end part of the rubber suction cup can not be flatly attached to the surface of the blackboard, and the rubber suction cup is arranged to form an annular inclined surface 4a, and the end part of the rubber suction cup can be effectively flatly attached to the surface of the blackboard through the annular inclined surface 4a structure under the action of extrusion deformation, so that the stable support of the fixed-point supporting leg 1 can be further improved.
As shown in fig. 1 and 4, the driving device includes a hand pressing plate 5 horizontally and vertically and rotatably disposed at an end of the fixed point leg 1 on the opposite side of the positioning center 11, and a rotary driving plate 6 larger than the outer diameter of the hand pressing plate 5 is further disposed on the fixed point leg 1 at the bottom of the hand pressing plate 5. Exerting the extrusion force on hand chuck 5, accessible clamp plate 3 forms the extrusion of sucking tightly the effect to rubber suction cup 4 to under the drawing angle state of having adjusted painting brush landing leg 2, through the rotation of drive rotary driving dish 6, rotatory when driving fixed point landing leg 1 and painting brush landing leg 2, make the painting brush of 2 tip of painting brush landing leg in the required figure of the drawing of blackboard surface rapid stabilization.
The principle of the utility model is as follows: when the fixed point drawing instrument is used, the rubber sucker 4 is compressed by external force to be extruded and retracted towards the direction of the pressure plate 3, the positioning tip 11 is leaked out, the positioning tip 11 is correspondingly contacted with the drawing positioning mark on the surface of a blackboard, then the external force for extruding the rubber sucker 4 is cancelled, the rubber sucker 4 is extruded and deformed by pressing force of the hand pressure plate 5 vertical to the surface of the blackboard and the extrusion action of the pressure plate 3, and meanwhile, the outer end part of the rubber sucker is tightly attached to the surface of the blackboard. In the extrusion process, partial air in the inner cavity 401 can be discharged through the exhaust micropores 402, and under the continuous pressing force, the exhaust micropores 402 are blocked through the deformation of the rubber suction cups 4, so that the external air is prevented from entering the inner cavity 401, the reduced air capacity in the inner cavity 401 can form a certain negative pressure suction effect, and the stable supporting effect of the rubber suction cups 4 on the fixed-point supporting legs 1 is improved.
The painting brush supporting leg 2 is rotated to a proper painting angle, then the painting brush supporting leg 2, the butterfly bolt 7 and the fastening nut are driven to move along the length direction of the adjusting strip hole 101, so that a painting brush at the end part of the painting brush supporting leg 2 can contact the surface of a blackboard, the butterfly bolt 7 is screwed at last, and the painting angle and the painting position of the painting brush supporting leg 2 are adjusted and fixed.
Through the rotation of drive rotary driving dish 6, drive fixed point landing leg 1 and painting brush landing leg 2 rotatory simultaneously for the painting brush of 2 tip of painting brush landing leg is at the required figure of the quick stable drawing in blackboard surface.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, and such changes and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a be applied to fixed point drawing ware of vertical blackboard which characterized in that: fixed point drawing ware includes vertical blackboard surface fixed point landing leg of perpendicular to (1), swing joint has on fixed point landing leg (1) compare in fixed point landing leg (1) brush landing leg (2) that can rotate wantonly fixed point landing leg (1) contact fixed point landing leg (1) the end side on vertical blackboard surface still is provided with positioner, and with positioner is opposite the end side of fixed point landing leg (1) still be provided with the rotatory drive arrangement of fixed point landing leg (1).
2. The fixed point drawing instrument applied to the vertical blackboard according to claim 1, characterized in that: fixed point landing leg (1) are close to drive arrangement's upper portion is vertical to be provided with adjusts a hole (101), the tip of painting brush landing leg (2) articulated and selective fastening or in adjust a hole (101) vertical removal.
3. The fixed point drawing instrument applied to the vertical blackboard according to claim 2, characterized in that: the fixed point supporting leg is characterized in that a positioning center (11) is arranged at the end part of the fixed point supporting leg (1), the positioning device comprises a pressing plate (3) rotatably arranged at the end part of the top side of the positioning center (11), a rubber sucking disc (4) annularly wrapping the positioning center (11) is fixed on the outer side of the pressing plate (3), and the outer end part of the rubber sucking disc (4) exceeds the outer end part of the positioning center (11).
4. The fixed point drawing instrument applied to the vertical blackboard according to claim 3, characterized in that: the rubber suction cup (4) is provided with an inner cavity (401), the side wall of the rubber suction cup is provided with an exhaust micropore (402) communicated with the inner cavity (401), and the outer end part of the rubber suction cup (4) is provided with an inward annular inclined surface (4 a).
5. The fixed point drawing instrument applied to the vertical blackboard according to claim 4, characterized in that: the driving device comprises a hand pressing plate (5) which is horizontally and vertically arranged at the end part of the fixed point supporting leg (1) on the opposite side of the positioning tip (11) in a rotating mode, and a rotary driving plate (6) which is larger than the outer diameter of the hand pressing plate (5) is further arranged on the fixed point supporting leg (1) at the bottom of the hand pressing plate (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220078056.9U CN216708873U (en) | 2022-01-13 | 2022-01-13 | Fixed point drawing device applied to vertical blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220078056.9U CN216708873U (en) | 2022-01-13 | 2022-01-13 | Fixed point drawing device applied to vertical blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216708873U true CN216708873U (en) | 2022-06-10 |
Family
ID=81891488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220078056.9U Expired - Fee Related CN216708873U (en) | 2022-01-13 | 2022-01-13 | Fixed point drawing device applied to vertical blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216708873U (en) |
-
2022
- 2022-01-13 CN CN202220078056.9U patent/CN216708873U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220610 |