CN201177889Y - Teaching tool applicable for demonstration of vector and parallelogram rule abided thereby - Google Patents
Teaching tool applicable for demonstration of vector and parallelogram rule abided thereby Download PDFInfo
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- CN201177889Y CN201177889Y CNU200820055886XU CN200820055886U CN201177889Y CN 201177889 Y CN201177889 Y CN 201177889Y CN U200820055886X U CNU200820055886X U CN U200820055886XU CN 200820055886 U CN200820055886 U CN 200820055886U CN 201177889 Y CN201177889 Y CN 201177889Y
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- parallelogram
- limits
- vector
- teaching aid
- parallelogram lever
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Abstract
The utility model discloses a teaching aid used for demonstrating a vector and the followed parallelogram rule. The teaching aid comprises a parallelogram frame and a diagonal rod; one end of the diagonal rod is hinged between the two rims at the lower part of the parallelogram frame, and the other end passes through a slot formed at the jointing part of the other two rims at the upper part of the parallelogram frame, thereby forming a parallelogram frame with the diagonal rod. An arrowhead is also fixedly connected with the hinging part of the two rims at the upper part of the parallelogram frame, the arrowhead has a hollow structure, and the diagonal rod is sleeved with the arrowhead. Two movable connecting plate are respectively arranged on the two rims at the upper part of the parallelogram frame, and fixedly connected with the arrowheads with the hollow structures; and the two rims at the lower part of the parallelogram frame are respectively sleeved with the arrowheads. The teaching aid has simple structure and convenient use, and can visually, vividly and precisely demonstrate the vector and the followed parallelogram rule.
Description
Technical field
The utility model belongs to instruments used for education, teaching aid field, relates to the teaching aid that can be used for demonstrating the physics vector.
Background technology
In the physics the directive again amount of existing size is called vector, a key character of vector is that its synthetic method is followed parallelogram law, and vector and the parallelogram law of being followed thereof are main points in the physics teaching.In present middle school physical curriculum teaching practice, for the parallelogram law that helps classmates to understand vector and followed better, teaching aid has obtained using widely; Take a broad view of various forms of teaching aids, its common feature is: the framework that has a parallelogram at least, have at least the adjacent both sides can be movable, also be provided with the rod member of an expression diagonal of a parallelogram in the middle of the angle that adjacent both sides form, but this diagonal line rod member representative vector, the decomposition vector of this vector is represented on these adjacent both sides, form different parallelogram by length and the angle of adjusting these adjacent both sides, demonstration physics vector and the parallelogram law of being followed thereof have effect intuitively.The shortcoming of these teaching aids is: the accuracy of demonstration, intuitive deficiency.Vector is normally represented with the line segment that has arrow in relevant textbook, but because the restriction of structure itself even indicate arrow in these teaching aids, also only can accurately be demonstrated the parallelogram law under a kind of state.
The utility model content
The purpose of this utility model is to provide a kind of teaching aid of the parallelogram law that can be used for demonstrating vector and followed, the parallelogram law that it can be demonstrated vector and be followed visually.
For achieving the above object, solution of the present utility model is:
A kind of teaching aid of the parallelogram law that can be used for demonstrating vector and followed, it comprises parallelogram lever and diagonal line bar, one end of diagonal line bar is hinged between two limits, bottom of parallelogram lever, the other end then passes the groove of other intersection, two limits, top of parallelogram lever, forms the parallelogram lever with diagonal line bar.
Further, two limits in two limits, the bottom of this parallelogram lever and top are separately by hinged securement, and two limits, bottom penetrate respectively and form quadrilateral structure in two limits, top.
The movable end on two limits of parallelogram lever bottom is wideer than the width of elongated slot, can prevent that two limits from skidding off elongated slot.
Two limits on parallelogram lever top have the slotted eye that can supply the diagonal line bar to pass for the middle limit that is provided with elongated slot, the hinged place on two limits.
The hinged place on two limits on parallelogram lever top also is fixedly connected with an arrow, and this arrow is a hollow structure, is enclosed within on the diagonal line bar.
The web joint of one activity is all arranged on two limits on parallelogram lever top, and this web joint is fixedlyed connected with an arrow, and this arrow is a hollow structure, is enclosed within respectively on two limits of parallelogram lever bottom.
In the side of the elongated slot on two limits on the side of the center section on two limits of each adjacent parallelogram lever bottom of group and parallelogram lever top, have at least a side to be provided with laciniation.
Because adopt such scheme, the utility model is simple in structure, easy to use, and the parallelogram law that can demonstrate vector and be followed visually.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the utility model parallelogram teaching aid.
Embodiment
As shown in Figure 1, the utility model is made of parallelogram lever 1 and diagonal line bar 2, one end of diagonal line bar 2 is hinged between two limits 31,32 of parallelogram lever 1, the other end then passes the groove 5 of 41,42 intersections, two limits in addition of parallelogram lever 1, forms a parallelogram lever 1 with diagonal line bar 2.
The limit 31,32 of parallelogram lever 1 is two ends broad, middle narrower I-shaped plate structure, in the middle of then being respectively, limit 41,42 has the plate structure of an elongated slot 61,62, the center section width basically identical on the width of this elongated slot 61,62 and limit 31,32, limit 31,32 is through in the elongated slot 61,62, and can prolong this groove and slide, the movable end 311,321 on limit 31,32 is wideer than the width of elongated slot 61,62, can prevent that limit 31,32 from skidding off elongated slot 61,62.The dual-side of narrower part forms four groups of (sides 615 and side 315 altogether in the middle of the dual-side of elongated slot 61,62 and the limit 31,32; Side 616 and side 316; Side 625 and side 325; Side 626 and side 326) adjacent side, wherein, in the adjacent side of each group (two), have at least a side that the laciniation (not shown) can be set, can block mutually, make parallelogram lever 1 form the parallelogram of a certain special angle and the length of side.Also be with the arrow 71,72 of a hollow on the limit 31,32 respectively, this arrow 71,72 is connected and fixed with a plate 81,82 respectively, this web joint 81,82 also is a hollow structure, it can be enclosed within on the limit 41,42 and 41,42 slips along the limit, make when limit 31,32 with 41,42 positions, limit relative variation takes place, but arrow 71,72 lagging edges 41,42 respectively moves together, and the head of arrow 71,72 withstands limit 41,42 respectively, limit 31,32 respectively with the different vectors of arrow 71,72 combination representatives; Two limits 41,42 of parallelogram lever 1 also are hinged, have a groove 5 in the hinged place, making these two limits 41,42 can prolong diagonal line bar 2 moves, the hinged place on limit 41,42 also is fixedly connected with an arrow 9, arrow 9 is hollow structures, be enclosed within on the diagonal line bar 2, can move up and down along diagonal line bar 2, and represent another vector with diagonal line bar 2.
When demonstrating as educational aid, can be with diagonal line bar 2 as master vector, and two limits 31,32 as the component vector, as long as promote limit 31,32, because arrow 71,72 and arrow 9 all be to be connected and fixed on limit 41, be to follow limit 41 on 42,42 move, so just be shown as the limit 31 of forming parallelogram on directly perceived, 32 and the variation of the length of diagonal line bar 2, change limit 31,32 with limit 41, joining between 42 can form different parallelogram, with limit 31,32 and between diagonal line bar 2 expression vectors, then can be directly perceived, image, demonstrate out when the direction of any one vector wherein or size change the change shape of all the other incidence vector directions or size under parallelogram law exactly.
The above-mentioned description to embodiment is can understand and use the utility model for ease of those skilled in the art.The person skilled in the art obviously can easily make various modifications to these embodiment, and needn't pass through performing creative labour being applied in the General Principle of this explanation among other embodiment.Therefore, the utility model is not limited to the foregoing description, and those skilled in the art should be within protection domain of the present utility model for improvement and modification that the utility model is made according to announcement of the present utility model.
Claims (7)
1, a kind of teaching aid of the parallelogram law that can be used for demonstrating vector and followed, it comprises parallelogram lever and diagonal line bar, it is characterized in that: an end of this diagonal line bar is hinged between two limits, bottom of parallelogram lever, the other end then passes the groove of other intersection, two limits, top of parallelogram lever, forms the parallelogram lever with diagonal line bar.
2, the teaching aid of the parallelogram law that can be used for demonstrating vector and followed according to claim 1, it is characterized in that: by hinged securement, two limits, bottom penetrate respectively in two limits, top two limits in two limits, the bottom of this parallelogram lever and top separately.
3, the teaching aid of the parallelogram law that can be used for demonstrating vector and followed according to claim 1 is characterized in that: the movable end on two limits of this parallelogram lever bottom is wideer than the width of elongated slot, can prevent that two limits from skidding off elongated slot.
4, the teaching aid of the parallelogram law that can be used for demonstrating vector and followed according to claim 1, it is characterized in that: two limits on this parallelogram lever top have the slotted eye that can supply the diagonal line bar to pass for the middle limit that is provided with elongated slot, the hinged place on two limits.
5, the teaching aid of the parallelogram law that can be used for demonstrating vector and followed according to claim 1, it is characterized in that: the hinged place on two limits on this parallelogram lever top also is fixedly connected with an arrow, this arrow is a hollow structure, is enclosed within on the diagonal line bar.
6, the teaching aid of the parallelogram law that can be used for demonstrating vector and followed according to claim 5, it is characterized in that: the web joint that is respectively equipped with an activity on two limits on this parallelogram lever top, this web joint is fixedlyed connected with an arrow, this arrow is a hollow structure, is enclosed within respectively on two limits of parallelogram lever bottom.
7, the teaching aid of the parallelogram law that can be used for demonstrating vector and followed according to claim 1, it is characterized in that: in the side of the elongated slot on two limits on the side of the center section on two limits of each adjacent parallelogram lever bottom of group and parallelogram lever top, have at least a side to be provided with laciniation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820055886XU CN201177889Y (en) | 2008-03-04 | 2008-03-04 | Teaching tool applicable for demonstration of vector and parallelogram rule abided thereby |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820055886XU CN201177889Y (en) | 2008-03-04 | 2008-03-04 | Teaching tool applicable for demonstration of vector and parallelogram rule abided thereby |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201177889Y true CN201177889Y (en) | 2009-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820055886XU Expired - Fee Related CN201177889Y (en) | 2008-03-04 | 2008-03-04 | Teaching tool applicable for demonstration of vector and parallelogram rule abided thereby |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201177889Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103366624A (en) * | 2013-07-23 | 2013-10-23 | 苏州卫生职业技术学院 | Design method and teaching method of variable electrocardial vector display ring |
| CN105976692A (en) * | 2016-06-28 | 2016-09-28 | 山西农业大学 | Visual teaching tool for planar linkage speed vector diagram |
-
2008
- 2008-03-04 CN CNU200820055886XU patent/CN201177889Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103366624A (en) * | 2013-07-23 | 2013-10-23 | 苏州卫生职业技术学院 | Design method and teaching method of variable electrocardial vector display ring |
| CN105976692A (en) * | 2016-06-28 | 2016-09-28 | 山西农业大学 | Visual teaching tool for planar linkage speed vector diagram |
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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: 20090107 Termination date: 20100304 |