CN201556325U - Teaching aid for gravity center demonstration - Google Patents
Teaching aid for gravity center demonstration Download PDFInfo
- Publication number
- CN201556325U CN201556325U CN2009200770839U CN200920077083U CN201556325U CN 201556325 U CN201556325 U CN 201556325U CN 2009200770839 U CN2009200770839 U CN 2009200770839U CN 200920077083 U CN200920077083 U CN 200920077083U CN 201556325 U CN201556325 U CN 201556325U
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- CN
- China
- Prior art keywords
- leg
- rod
- base plate
- pin joint
- teaching aid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a teaching aid for gravity center demonstration, comprising a bottom plate, a first rod hinged with the bottom plate, a second rod, a third rod hinged with the bottom plate, the first rod and the second rod, a fourth rod hinged with the second rod and the bottom plate, a fifth rod hinged with the second rod and the bottom plate, a sixth rod hinged with the first rod and the bottom plate, a fulcrum positioned on the bottom plate, a heavy object positioned on the bottom plate, close to one end of the first rod or positioned at one end of the first rod; and the heavy object can be taken down from the bottom plate or the first rod. The teaching aid has the benefit of being capable of demonstrating the influence of the gravity center on the balance of the object clearly and legibly.
Description
Technical field
The utility model relates to a kind of center of gravity demonstration teaching aid, particularly a kind of center of gravity demonstration teaching aid of demonstrating center of gravity to the object stability influence.
Background technology
In teaching process, and by means of the function of teaching aid demonstration, often can combine abstract knowledge and concrete material object or model etc., can make not only that knowledge is specialized, imagery, be convenient to the student and understand, shorten the process of grasping knowledge, and can motivate students' interest in learning, concentrate its notice, improve the efficient of classroom instruction.
The pupil is owing to be subjected to the limitation of the experience of life, the presentation poorness of storing in the brains, be difficult for understanding for abstract concept, rule and rule, in teaching, the ocular demonstration of teaching aid can provide abundant perceptual material for the student, instruction of papil forms lively, real presentation with the multiple sense organ perception things of oneself, thereby helps students ' understanding and understand knowledge.
In classroom instruction, suitably use the teaching aid demonstration, also can be the student lively situation is provided, motivate students' interest in learning, attract their notice, better the learning initiative of mobilizing students and initiative.
These functions of teaching aid demonstration are used in the classroom instruction dexterously, had both cultivated student's operating ability and observed thinking ability, excited the interest of student's study, improved student's the learning efficiency and the efficient of classroom instruction again.
How to influence a kind of like this abstract concept of object stability for center of gravity, only oral telling about, often therefore student's indigestion, needs a kind of center of gravity demonstration teaching aid, and the student can clearly be understood.
How a kind of like this teaching aid is provided, has become the problem that those skilled in the art need solve.
The utility model content
Technical scheme to be solved of the present utility model provides a kind of, to solve the deficiencies in the prior art.
For solving technique scheme, the utility model provides a kind of center of gravity demonstration teaching aid, comprising: base plate; The first leg, with described base plate hinged; The second leg; The third leg, hinged with described base plate, the described first leg, the described second leg; The fourth leg, with the described second leg, described base plate hinged; The 5th rod, with the described second leg, described base plate hinged; The 6th rod, with the described first leg, described base plate hinged; Fulcrum, be positioned on the described base plate; Weight, be positioned on the described base plate near an end of the described first leg or be positioned at an end of the described first leg, described weight can take off from the described base plate or the described first leg; The pin joint of the described third leg and base plate is between the pin joint of the pin joint of the described first leg and the described third leg and the described third leg and the described second leg, the pin joint of the described second leg and the described fourth leg is between the pin joint of the pin joint of the described third leg and the described second leg and the described second leg and described the 5th rod, and the pin joint of the described first leg and the described third leg is between the pin joint and described weight of the described first leg and described the 6th rod.
Preferable, top board covers the described base plate and the described first leg, the described second leg, the described third leg, the described fourth leg, described the 5th rod, reaches on described the 6th rod.
Preferable, described top board can be dismantled or open.
The beneficial effects of the utility model are: can show the influence of center of gravity to the object balance to the student clearly.
Description of drawings
Fig. 1 is a center of gravity demonstration teaching aid structural representation.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
See also Fig. 1, a kind of physical construction demonstration teaching aid comprises:
The first leg 1, hinged with described base plate 9;
The second leg 2;
The third leg 3, hinged with described base plate 9, the described first leg 1, the described second leg 2;
The fourth leg 4, hinged with the described second leg 2, described base plate 9;
The 5th rod 5, hinged with the described second leg 2, described base plate 9;
The 6th rod 6, hinged with the described first leg 1, described base plate 9;
The pin joint of the described third leg 3 and base plate 9 is between the pin joint of the pin joint of the described first leg 1 and the described third leg 3 and the described third leg 3 and the described second leg 2, the pin joint of the described second leg 2 and the described fourth leg 4 is between the pin joint of the pin joint of the described third leg 3 and the described second leg 2 and the described second leg 2 and described the 5th rod 5, and the pin joint of the described first leg 1 and the described third leg 3 is between the pin joint and described weight 7 of the described first leg 1 and described the 6th rod 6.
Among Fig. 1, solid dot is represented the pin joint of rod and base plate, and hollow dots is represented the pin joint between rod and the rod.
Further, described base plate 9 is humanoid, and hand of described humanoid base plate and two pin and health are hinged (for for purpose of brevity, figure does not show), weight 7 is placed on body part affixed, the end of irremovable hand can hold with the weight that magnet will have magnetic force, also can adopt the mode of suspension to hang weight.
Further, described physical construction demonstration teaching aid also comprises top board (for for purpose of brevity, scheming not show), covers the described base plate 9 and the described first leg 1, the described second leg 2, the described third leg 3, the described fourth leg 4, described the 5th rod 5, reaches on described the 6th rod 6.
Further, described top board can be dismantled or open.
Further, weight can be placed in described top board bottom, and when described top board closes, on weight on the described top board and the described base plate 9 or weight 7 positions of the described first leg 1 are approaching.
Hold fulcrum 8 with forefinger (other stilts), teaching aid is standing upside down and is not falling down, but posture is not too vertical.
Holding or hanging a bead on the palm of humanoid bottom or in the first leg 1, posture more vertical, when bead was positioned in the described first leg 1, the described first leg 1 can be drawn other parts, changed humanoid posture.The bead number is different just can to change the vertical posture of clown's health, compares experiment, so, can show the influence of center of gravity to the object balance to the student clearly.
Above embodiment is the unrestricted the technical solution of the utility model in order to explanation only.Any modification or partial replacement that does not break away from the utility model spirit and scope all should be encompassed in the middle of the claim scope of the present utility model.
Claims (3)
1. a center of gravity demonstration teaching aid is characterized in that, comprising:
Base plate;
The first leg, with described base plate hinged;
The second leg;
The third leg, hinged with described base plate, the described first leg, the described second leg;
The fourth leg, with the described second leg, described base plate hinged;
The 5th rod, with the described second leg, described base plate hinged;
The 6th rod, with the described first leg, described base plate hinged;
Fulcrum, be positioned on the described base plate;
Weight, be positioned on the described base plate near an end of the described first leg or be positioned at an end of the described first leg, described weight can take off from the described base plate or the described first leg;
The pin joint of the described third leg and base plate is between the pin joint of the pin joint of the described first leg and the described third leg and the described third leg and the described second leg, the pin joint of the described second leg and the described fourth leg is between the pin joint of the pin joint of the described third leg and the described second leg and the described second leg and described the 5th rod, and the pin joint of the described first leg and the described third leg is between the pin joint and described weight of the described first leg and described the 6th rod.
2. center of gravity demonstration teaching aid as claimed in claim 1 is characterized in that: top board covers the described base plate and the described first leg, the described second leg, the described third leg, the described fourth leg, described the 5th rod, reaches on described the 6th rod.
3. center of gravity demonstration teaching aid as claimed in claim 2 is characterized in that: described top board can be dismantled or open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200770839U CN201556325U (en) | 2009-06-25 | 2009-06-25 | Teaching aid for gravity center demonstration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200770839U CN201556325U (en) | 2009-06-25 | 2009-06-25 | Teaching aid for gravity center demonstration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201556325U true CN201556325U (en) | 2010-08-18 |
Family
ID=42616012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200770839U Expired - Fee Related CN201556325U (en) | 2009-06-25 | 2009-06-25 | Teaching aid for gravity center demonstration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201556325U (en) |
-
2009
- 2009-06-25 CN CN2009200770839U patent/CN201556325U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20110625 |