CN208335581U - A kind of cardiod demonstration teaching aid - Google Patents
A kind of cardiod demonstration teaching aid Download PDFInfo
- Publication number
- CN208335581U CN208335581U CN201721849061.0U CN201721849061U CN208335581U CN 208335581 U CN208335581 U CN 208335581U CN 201721849061 U CN201721849061 U CN 201721849061U CN 208335581 U CN208335581 U CN 208335581U
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- cardiod
- rotation axis
- gear
- turntable
- fixedly connected
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Abstract
The utility model discloses a kind of cardiod demonstration teaching aids, including exhibition booth, turntable, handwheel, exhibition booth upper end is equipped with handwheel and turntable, handwheel is fixedly connected with one upper end of rotation axis, one lower end of rotation axis is fixed with driving wheel center, center of turntable is fixedly connected with two upper end of rotation axis, through-hole is equipped in rotation axis two, two lower end of rotation axis is fixedly connected with driven wheel center, driving wheel passes through the synchronous band connection of annular with driven wheel, turntable upper end is equipped with fixed gear, fixed gear centre and support axis connection, the through-hole that support shaft passes through rotation axis one is fixedly connected with exhibition booth, turntable upper end is fixed with movement gear, it moves outer gear rim and is equipped with image model, protective cover is equipped with above turntable, cardiod is portrayed in protective cover upper surface, protective cover is fixedly connected with exhibition booth.This demonstration teaching aid can facilitate student to understand and remember with the formation of actual presentation cardiod.
Description
Technical field
The utility model relates to a kind of teaching aid devices, and in particular to a kind of cardiod demonstration teaching aid.
Background technique
Cardiod, also referred to as cardioid are epicycloidal one kind, are also one kind of limacon, be fixation on a circle a bit
It is formed by track in its another circumference rolling identical around tangent and radius with its, is obtained because its shape picture is heart-shaped
Name.But in teaching, only impart knowledge to students with books, the formation of student's indigestion cardiod, it has not been convenient to reason of the student to cardiod
Solution and application.
Utility model content
The purpose of this utility model is to provide a kind of cardiod demonstration teaching aids, can be with the shape of actual presentation cardiod
At, facilitate student understand and memory.
To achieve the above object, the utility model provides the following technical solutions:
A kind of cardiod demonstration teaching aid, including exhibition booth, turntable, handwheel, the exhibition booth upper end is equipped with handwheel and turntable, described
Handwheel is fixedly connected with one upper end of rotation axis, and one lower end of rotation axis is fixed with driving wheel center, the center of turntable with turn
Two upper end of moving axis is fixedly connected, and through-hole, the fixed company in two lower end of rotation axis and driven wheel center are equipped in the rotation axis two
It connects, for the driving wheel with driven wheel by the synchronous band connection of annular, the turntable upper end is equipped with fixed gear, the fixed tooth
Wheel center and support axis connection, the through-hole that the support shaft passes through rotation axis one are fixedly connected with exhibition booth, and the turntable upper end is solid
Surely there is movement gear, the movement outer gear rim is equipped with image model, is equipped with protective cover, the protective cover above the turntable
Cardiod has been portrayed in upper surface, and the protective cover is fixedly connected with exhibition booth.
Preferably, the movement gear is tangent with fixed gear and is intermeshed.
Preferably, the fixed gear is identical with movement gear radius.
Preferably, the image model on the boundary of the cardiod and movement gear surrounds fixed the be in track of gear movement
Unanimously.
Preferably, the protective cover is that transparent material is made.
Compared with prior art, the utility model has the beneficial effects that
Rotate handwheel, rotation axis one rotates with it, and rotation axis one drives driving wheel rotation, then by synchronous belt drive from
Wheel rotation, then turntable starts turning, and fixed gear is fixed, and movement gear is rotated together with turntable, because of movement tooth
Wheel is identical as fixed gear radius and is intermeshed, so movement gear can move in a circle around fixed gear, can observe
The motion profile of image model is consistent with the cardiod boundary shape that protective cover upper surface is portrayed on to movement outer gear rim, i.e. people
The motion profile of even model 12 is identical as cardiod.The utility model facilitates the formation of actual presentation cardiod, is conducive to student
Understand and remembers.
Detailed description of the invention
Fig. 1 is a kind of schematic perspective view of cardiod demonstration teaching aid in the utility model embodiment；
Fig. 2 is a kind of top view of cardiod demonstration teaching aid in the utility model embodiment；
Fig. 3 is in Fig. 2 along the cross-sectional view in the direction A-A；
Fig. 4 is the enlarged drawing in Fig. 3 at B；
Fig. 5 is a kind of side view of cardiod demonstration teaching aid in the utility model embodiment；
Fig. 6 is in Fig. 5 along the cross-sectional view in the direction C-C；
Fig. 7 is the structural schematic diagram of rotation axis two in the utility model embodiment；
In figure, 1, exhibition booth, 2, turntable, 3, handwheel, 4, rotation axis one, 5, driving wheel, 6, rotation axis two, 7, driven wheel, 8,
Synchronous belt, 9, fixed gear, 10, support shaft, 11, movement gear, 12, image model, 13, protective cover, 14, cardiod, 15, logical
Hole.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It please refers to shown in Fig. 1-7, a kind of cardiod demonstration teaching aid, including exhibition booth 1, turntable 2, handwheel 3, on the exhibition booth 1
End is equipped with handwheel 3 and turntable 2, and the handwheel 3 is fixedly connected with one 4 upper end of rotation axis, one 4 lower end of rotation axis and driving wheel
5 centers are fixed, and 2 center of turntable is fixedly connected with 26 upper end of rotation axis, and through-hole 15 is equipped in the rotation axis 26, described
26 lower end of rotation axis is fixedly connected with 7 center of driven wheel, and the driving wheel 5 is connect with driven wheel 7 by the synchronous belt 8 of annular,
2 upper end of turntable is equipped with fixed gear 9, and fixed 9 center of gear is connect with support shaft 10, and the support shaft 10, which passes through, to be turned
The through-hole 15 of moving axis 1 is fixedly connected with exhibition booth 1, and 2 upper end of turntable, which is fixed with, moves gear 11, outside the movement gear 11
Edge is equipped with image model 12, is equipped with protective cover 13 above the turntable 2, cardiod has been portrayed in 13 upper surface of protective cover
14, the protective cover 13 is fixedly connected with exhibition booth 1, and the movement gear 11 is tangent with fixed gear 9 and is intermeshed, described solid
Fixed gear 9 is identical with movement 11 radius of gear, and boundary and the image model 12 on movement gear 11 of the cardiod 14 surround
The be in track of the fixed movement of gear 9 is consistent, and the protective cover 13 is that transparent material is made.
Working principle: rotation handwheel 3, rotation axis 1 rotate with it, and rotation axis 1 drives driving wheel 5 to rotate, and then lead to
Crossing synchronous belt 8 drives driven wheel 7 to rotate, then turntable 2 starts turning, and fixed gear 9 is fixed, moves gear 11 with turntable
2 rotate together, because movement gear 11 is identical as fixed 9 radius of gear and is intermeshed, movement gear 11 can be around solid
Fixed gear 9 moves in a circle, it can be observed that in movement 11 outer rim of gear on the motion profile and protective cover 13 of image model 12
14 boundary shape of cardiod that end face is portrayed is consistent, i.e. the motion profile of image model 12 is identical as cardiod.So as to complete
The demonstration that cardiod is formed, facilitates understanding and memory of the student to cardiod.
Above content is only to the utility model structure example and explanation, the technology people of affiliated the art
Member makes various modifications or additions to the described embodiments or is substituted in a similar manner, without departing from this
The structure of utility model or beyond the scope defined by this claim, all should belong to the protection range of the utility model.
Claims (5)
1. a kind of cardiod demonstration teaching aid, it is characterised in that: including exhibition booth, turntable, handwheel, the exhibition booth upper end be equipped with handwheel and
Turntable, the handwheel are fixedly connected with one upper end of rotation axis, and one lower end of rotation axis is fixed with driving wheel center, the turntable
Center is fixedly connected with two upper end of rotation axis, is equipped with through-hole in the rotation axis two, in two lower end of rotation axis and driven wheel
The heart is fixedly connected, and for the driving wheel with driven wheel by the synchronous band connection of annular, the turntable upper end is equipped with fixed gear, institute
Fixed gear centre and support axis connection are stated, the through-hole that the support shaft passes through rotation axis one is fixedly connected with exhibition booth, and described turn
Disk upper end is fixed with movement gear, and the movement outer gear rim is equipped with image model, is equipped with protective cover, institute above the turntable
It states protective cover upper surface and has portrayed cardiod, the protective cover is fixedly connected with exhibition booth.
2. a kind of cardiod demonstration teaching aid according to claim 1, it is characterised in that: the movement gear and fixed gear
Tangent and intermeshing.
3. a kind of cardiod demonstration teaching aid according to claim 1, it is characterised in that: the fixed gear and movement gear
Radius is identical.
4. a kind of cardiod demonstration teaching aid according to claim 1, it is characterised in that: the boundary of the cardiod and movement
It is consistent that image model on gear surrounds fixed the be in track of gear movement.
5. a kind of cardiod demonstration teaching aid according to claim 1, it is characterised in that: the protective cover is transparent material institute
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849061.0U CN208335581U (en) | 2017-12-26 | 2017-12-26 | A kind of cardiod demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721849061.0U CN208335581U (en) | 2017-12-26 | 2017-12-26 | A kind of cardiod demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208335581U true CN208335581U (en) | 2019-01-04 |
Family
ID=64788512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721849061.0U Active CN208335581U (en) | 2017-12-26 | 2017-12-26 | A kind of cardiod demonstration teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208335581U (en) |
-
2017
- 2017-12-26 CN CN201721849061.0U patent/CN208335581U/en active Active
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