CN204732029U - A kind of physics teaching lever balance apparatus for demonstrating - Google Patents
A kind of physics teaching lever balance apparatus for demonstrating Download PDFInfo
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- CN204732029U CN204732029U CN201520392702.9U CN201520392702U CN204732029U CN 204732029 U CN204732029 U CN 204732029U CN 201520392702 U CN201520392702 U CN 201520392702U CN 204732029 U CN204732029 U CN 204732029U
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- arm
- fulcrum
- hook
- blackboard
- force
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Abstract
The utility model discloses a kind of physics teaching lever balance apparatus for demonstrating, comprise base, the rear end face of described base has several draw-in grooves, be provided with pole in the middle part of base, pole is perpendicular to base; Side is provided with hanging column to pole; Hanging column has hung up apparatus for demonstrating, apparatus for demonstrating comprises fulcrum, arm of force portion, fulcrum hook, power arm hook and resistance arm hook, the top of pole is provided with spool blackboard, spool blackboard and pole are hinged, the lower end of spool blackboard is provided with the suitable snap ring of several and draw-in groove, one end of spool blackboard is also fixedly installed pencil box, and blackboard eraser and charcoal pencil are placed in pencil box.The utility model is simple to operate, can change the position of fulcrum flexibly, the accurate registration reading the arm of force, after spool blackboard launches simultaneously, directly can draw the relation between lever balance theory different parameters by charcoal pencil on spool blackboard, effectively improve the results of learning of student.
Description
Technical field
The utility model relates to school instruction technical field of tools, specifically a kind of physics teaching lever balance apparatus for demonstrating.
Background technology
In physics, the hard objects can rotated around point of fixity is under force called lever, lever principle is one of important content of courses, and therefore lever used for physics teaching seems particularly important in teaching process.When demonstrating lever principle in physics teaching, need teacher to prepare various equipment in addition and carry out assembled demonstration on classroom, not only presentation process bothers, wastes time and energy, and demonstrating effect lacks intuitive, functional desk also can seem all in tumble, and existing lever used for physics teaching needs when teacher gives lessons to coordinate the common use of blackboard drawing, cannot allow relation between the very clear mutual confirmation lever balance theory different parameters of student, not only have impact on the effect of listening to the teacher of student, also add the teaching load of teacher.
Utility model content
The purpose of this utility model is to provide a kind of physics teaching lever balance apparatus for demonstrating, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of physics teaching lever balance apparatus for demonstrating, comprise base, the rear end face of described base has several draw-in grooves, be provided with pole in the middle part of described base, described pole is perpendicular to base; Described pole side is provided with hanging column; Described hanging column has hung up apparatus for demonstrating, and described apparatus for demonstrating comprises fulcrum, arm of force portion, fulcrum hook, power arm hook and resistance arm hook, and fulcrum and arm of force portion are set in parallel in same plane, and end links together therebetween; Fulcrum comprises fulcrum hook guide rail, point location rule and multiple fulcrum pilot hole, point location rule and fulcrum hook guide rail are disposed side by side in same plane, and a point location rule and fulcrum hook guide rail are integrated part, fulcrum hook guide rail is evenly provided with multiple fulcrum pilot hole, and the activity orientation end of fulcrum hook is arranged on fulcrum hook guide rail; Arm of force portion comprises arm of force hook guide rail and arm of force positioning rule, arm of force hook guide rail and arm of force positioning rule are disposed side by side in same plane, and arm of force hook guide rail and arm of force positioning rule are integrated part, the activity orientation end of power arm hook and the activity orientation end of resistance arm hook are arranged on arm of force hook guide rail simultaneously, and power arm hook and resistance arm hook hang up counterweight; Fulcrum at fulcrum hook slide on rails, and is fixed by fulcrum pilot hole by fulcrum hook; The top of described pole is provided with spool blackboard, and spool blackboard and pole are hinged, and the lower end of described spool blackboard is provided with the suitable snap ring of several and draw-in groove; One end of described spool blackboard is also fixedly installed pencil box, and blackboard eraser and Duo Gen charcoal pencil are placed in pencil box.
As further program of the utility model: the activity orientation end of described fulcrum hook has triangle polyester fibre pin, and this triangle polyester fibre pin wedge angle points to a point location rule, the activity orientation end of power arm hook and resistance arm hook is also provided with triangle polyester fibre pin, and this triangle polyester fibre pin wedge angle points to arm of force positioning rule.
As the utility model further scheme: two ends, described arm of force portion also respectively arrange a setting nut.
Compared with prior art, the beneficial effects of the utility model are: the utility model is simple to operate, the position of fulcrum can be changed flexibly, the registration of the accurate reading arm of force, the understanding lever principle making student more deep, after spool blackboard launches simultaneously, directly can draw the relation between lever balance theory different parameters by charcoal pencil on spool blackboard, student can be contrasted in clear observation, effectively improve the results of learning of student, alleviate the teaching load of teacher, meet the demand that modernization school is higher.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of physics teaching lever balance apparatus for demonstrating.
Fig. 2 is A-A sectional view in Fig. 1.
Fig. 3 is spool blackboard deployed condition schematic diagram in a kind of physics teaching lever balance apparatus for demonstrating.
In figure: 1-base, 2-draw-in groove, 3-pole, 4-spool blackboard, 5-snap ring, 6-fulcrum, 601-fulcrum hook guide rail, 602-prop up point location rule, 603-fulcrum pilot hole, 7-arm of force portion, 701-arm of force hook guide rail, 702-arm of force positioning rule, 8-fulcrum hook, 9-power arm hook, 10-resistance arm hook, 11-counterweight, 12-hanging column, 13-setting nut, 14-pencil box, 15-charcoal pencil, 16-blackboard eraser.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1-3, in the utility model embodiment, a kind of physics teaching lever balance apparatus for demonstrating, comprise base 1, the rear end face of described base 1 has several draw-in grooves 2, be provided with pole 3 in the middle part of described base 1, described pole 3, perpendicular to base 1, described pole 3 side is provided with hanging column 12.
Described hanging column 12 has hung up apparatus for demonstrating, described apparatus for demonstrating comprises fulcrum 6, arm of force portion 7, fulcrum hook 8, power arm hook 9 and resistance arm hook 10, fulcrum 6 and arm of force portion 7 are set in parallel in same plane, and end links together therebetween; Fulcrum 6 comprises fulcrum hook guide rail 601, point location rule 602 and multiple fulcrum pilot hole 603, point location rule 602 and fulcrum hook guide rail 601 are disposed side by side in same plane, and a point location rule 602 and fulcrum hook guide rail 601 are integrated part, fulcrum hook guide rail 601 is evenly provided with multiple fulcrum pilot hole 603, and the activity orientation end of fulcrum hook 8 is arranged on fulcrum hook guide rail 601; Arm of force portion 7 comprises arm of force hook guide rail 701 and arm of force positioning rule 702, arm of force hook guide rail 701 and arm of force positioning rule 702 are disposed side by side in same plane, and arm of force hook guide rail 701 and arm of force positioning rule 702 are integrated part, the activity orientation end of power arm hook 9 and the activity orientation end of resistance arm hook 10 are arranged on arm of force hook guide rail 701 simultaneously, power arm hook 9 and resistance arm hook 10 hang up counterweight 11, demonstrates lever principle by increasing or reduce counterweight 11; The position of fulcrum can change flexibly, and fulcrum hook 12 slides on fulcrum hook guide rail 601, and is fixed by fulcrum by fulcrum pilot hole 603, make when single unit system tilts, fulcrum can not produce displacement, and result is accurate, and the problem that the conventional efficient that repeatable operation can not be caused to bring is low; Two ends, described arm of force portion 7 also respectively arrange a setting nut 13, and setting nut 13 is for adjustment; The activity orientation end of fulcrum hook 8 has triangle polyester fibre pin, and this triangle polyester fibre pin wedge angle points to a point location rule 602, the activity orientation end of power arm hook 9 and resistance arm hook 10 is also provided with triangle polyester fibre pin, and this triangle polyester fibre pin wedge angle points to arm of force positioning rule 702, makes reading more accurate; Described fulcrum hook 8 hangs on hanging column 12.
The top of described pole 3 is provided with spool blackboard 4, and spool blackboard 4 and pole 3 are hinged, and the lower end of described spool blackboard 4 is provided with several snap rings 5 suitable with draw-in groove 2, after spool blackboard 4 expansion, is installed with a snap ring 5 in each draw-in groove 2 on base 1; One end of described spool blackboard 4 is also fixedly installed pencil box 14, blackboard eraser 16 and Duo Gen charcoal pencil 15 are placed in pencil box 14, setting like this, be convenient to teacher in the process of giving lessons, give lessons while carry out drafting lever balance theory figure, many charcoal pencils 15 can be the charcoal pencil of different colours, are convenient to the different parameters of student to lever balance theory and analyze and study, blackboard eraser 16 is convenient to wipe the graphical trace drawn, convenient and practical.During use, snap ring 5 is installed in draw-in groove 2 and is launched by spool blackboard 4, is plotted on spool blackboard 4 by charcoal pencil 5 simultaneously, can see the lever balance theory figure drawn on spool blackboard 4 during analysis clearly, is convenient to teacher's demonstration.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this instructions is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should by instructions integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (3)
1. a physics teaching lever balance apparatus for demonstrating, comprise base (1), it is characterized in that, the rear end face of described base (1) has several draw-in grooves (2), described base (1) middle part is provided with pole (3), and described pole (3) is perpendicular to base (1); Described pole (3) side is provided with hanging column (12); (12) have hung up apparatus for demonstrating to described hanging column, described apparatus for demonstrating comprises fulcrum (6), arm of force portion (7), fulcrum hook (8), power arm hook (9) and resistance arm hook (10), fulcrum (6) and arm of force portion (7) are set in parallel in same plane, and end links together therebetween; Fulcrum (6) comprises fulcrum hook guide rail (601), point location rule (602) and multiple fulcrum pilot hole (603), point location rule (602) and fulcrum are linked up with guide rail (601) and are disposed side by side in same plane, and a point location rule (602) and fulcrum hook guide rail (601) are integrated part, fulcrum hook guide rail (601) is evenly provided with multiple fulcrum pilot hole (603), and the activity orientation end of fulcrum hook (8) is arranged on fulcrum hook guide rail (601); Arm of force portion (7) comprises arm of force hook guide rail (701) and arm of force positioning rule (702), arm of force hook guide rail (701) and arm of force positioning rule (702) are disposed side by side in same plane, and arm of force hook guide rail (701) and arm of force positioning rule (702) are integrated part, the activity orientation end of the activity orientation end of power arm hook (9) and resistance arm hook (10) is arranged on arm of force hook guide rail (701) simultaneously, and power arm hook (9) and resistance arm hook (10) hang up counterweight (11); Fulcrum in the upper slip of fulcrum hook guide rail (601), and is fixed by fulcrum pilot hole (603) by fulcrum hook (12); The top of described pole (3) is provided with spool blackboard (4), and spool blackboard (4) and pole (3) are hinged, and the lower end of described spool blackboard (4) is provided with the suitable snap ring (5) of several and draw-in groove (2); One end of described spool blackboard (4) is also fixedly installed pencil box (14), and blackboard eraser (16) and many charcoal pencils (15) are placed in pencil box (14).
2. a kind of physics teaching lever balance apparatus for demonstrating according to claim 1, it is characterized in that, the activity orientation end of described fulcrum hook (8) has triangle polyester fibre pin, and this triangle polyester fibre pin wedge angle points to a point location rule (602), the activity orientation end of power arm hook (9) and resistance arm hook (10) is also provided with triangle polyester fibre pin, and this triangle polyester fibre pin wedge angle points to arm of force positioning rule (702).
3. a kind of physics teaching lever balance apparatus for demonstrating according to claim 1, is characterized in that, described arm of force portion (7) two ends also respectively arrange a setting nut (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392702.9U CN204732029U (en) | 2015-06-09 | 2015-06-09 | A kind of physics teaching lever balance apparatus for demonstrating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520392702.9U CN204732029U (en) | 2015-06-09 | 2015-06-09 | A kind of physics teaching lever balance apparatus for demonstrating |
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| Publication Number | Publication Date |
|---|---|
| CN204732029U true CN204732029U (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520392702.9U Expired - Fee Related CN204732029U (en) | 2015-06-09 | 2015-06-09 | A kind of physics teaching lever balance apparatus for demonstrating |
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| CN (1) | CN204732029U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109215455A (en) * | 2017-09-08 | 2019-01-15 | 邯郸学院 | A kind of the lever principle experimental provision and its demenstration method of physical experiments |
-
2015
- 2015-06-09 CN CN201520392702.9U patent/CN204732029U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109215455A (en) * | 2017-09-08 | 2019-01-15 | 邯郸学院 | A kind of the lever principle experimental provision and its demenstration method of physical experiments |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151028 Termination date: 20160609 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |