CN110232852A - A kind of sound transmission demonstration teaching aid - Google Patents
A kind of sound transmission demonstration teaching aid Download PDFInfo
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- CN110232852A CN110232852A CN201910639884.8A CN201910639884A CN110232852A CN 110232852 A CN110232852 A CN 110232852A CN 201910639884 A CN201910639884 A CN 201910639884A CN 110232852 A CN110232852 A CN 110232852A
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- ring
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- sound transmission
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/14—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for acoustics
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- Algebra (AREA)
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- Pure & Applied Mathematics (AREA)
- Business, Economics & Management (AREA)
- Acoustics & Sound (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
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Abstract
The invention discloses a kind of sound transmission demonstration teaching aids, belong to teaching demonstration device technical field, including pedestal, and pillar and the first screwed pipe have been bolted at the top of pedestal, bidirectional helical bar is embedded at the top center of the first screwed pipe.Pat the rubber tissue for not opening circular hole, the air in straight tube can be vibrated, it can also be vibrated therewith positioned at extraneous air, the air of vibration passes to sound wave in the ear of study personnel, tap the ear-drum of study personnel, so that study personnel hear sound, the propagation of sound is intuitively experienced by ear convenient for scholar person, point lighted candle, again the rubber tissue of non-aperture is struck, the air of vibration sound wave by circular hole outflow come, it puffs the candle out, study personnel intuitively understand the propagation of sound by eyes, pull pull rod, candle is replaced or is fixed, handwheel can also be rotated, adjust the tilt angle of straight tube, rotate hand lever, stable fixation can be carried out to straight tube, it is easy to use.
Description
Technical field
The invention belongs to teaching demonstration device technical field, specially a kind of sound transmission demonstration teaching aid.
Background technique
Sound is the sound wave generated by object vibration.Be propagated by medium (air or solid, liquid) and can by people or
The wave phenomenon that animal auditory organ is perceived.The object for initially issuing vibration (vibration) calls source.Sound is shaken in the form of wave
Dynamic (vibration) is propagated.Sound is that sound wave by any substance propagates the movement to be formed.In teaching process, the biography to sound is needed
Broadcast and explained, due to sound propagation when cannot be directly viewed, need to be explained by demonstration teaching aid.
But due to sound propagate it is illegal see, teacher need to " sound is propagated by vibrating " this
One principle is explained, and during explanation, is frequently encountered problem, if the aerial vibration of sound is invisible, naked eyes
It is difficult to directly observe, student understands and masters this partial knowledge and have any problem since life experience is shallower, and demonstration teaching aid is complicated, inconvenient
In use, the propagation principle that study personnel grasp sound is influenced.
Summary of the invention
It is an object of the invention to: in order to solve to hear, see physical effect that sound transmission generates and be easy to use etc.
Problem provides a kind of sound transmission demonstration teaching aid.
The technical solution adopted by the invention is as follows: a kind of sound transmission demonstration teaching aid, including pedestal, the top of the pedestal
It has been bolted pillar and the first screwed pipe, bidirectional helical bar, institute are embedded at the top center of first screwed pipe
The second screwed pipe that the other end of bidirectional helical bar is arranged with is stated, and is welded with handwheel on the outer wall of bidirectional helical bar, the branch
The top of column and the second screwed pipe rotates and is provided with ring set, and sliding is embedded with straight tube, the both ends of the straight tube in the ring set
It is arranged with the first rubber ring and the second rubber ring respectively, the top of the pedestal, which is located at below the second rubber ring, is welded with fixation
Ring block, and candle is inserted in fixed ring block.
Wherein, restraining position ring block is welded in first rubber ring and the second rubber ring, the stop collar is far from straight tube
Side fitting is provided with rubber tissue, and the other side of rubber tissue is provided with pressure ring, and pressure ring is fixed by bolt and stop collar.
Wherein, there are two the rubber tissue is arranged altogether, wherein in a rubber tissue being located in the second rubber ring
Circular hole is offered at the heart.
Wherein, screw rod is embedded at the top center of the ring set, one end that the screw rod is located on the inside of ring set is arranged with
Arc panel, and screw rod is located at one end in arc panel and is welded with spill spin block, the screw rod is welded with hand far from one end of arc panel
Bar, will pass through hand lever rotation screw rod.
Wherein, the outside uniform welding of the arc panel has the first spring, and the other end of the first spring and ring set is interior
Wall welding.
Wherein, sliding is embedded with pin rod in the fixed ring block, and one end that pin rod is located on the outside of fixed ring block is welded with
Pull rod.
Wherein, the pull rod is welded with two telescopic rods close to the side of fixed ring block, two telescopic rods it is another
End and fixed ring block welding, and the outer sheath of two telescopic rods is set there are two second spring, and the both ends of two second springs
It is welded respectively with fixed ring block and pull rod.
Wherein, the circular hole is located at the top of candle, the flame to puff the candle out so as to air by circular hole.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, in the present invention, faculty can not open the rubber tissue of circular hole with Finger Taps, can vibrate the air in straight tube, be located at
Extraneous air can also vibrate therewith, and the air of vibration passes to sound wave in the ear of study personnel, tap the ear of study personnel
Film intuitively experiences the propagation of sound convenient for scholar person so that study personnel hear sound by ear.
2, in the present invention, lighted candle is put so that circular hole is in above candle flame and strikes the rubber tissue of non-aperture again,
The air in straight tube can be vibrated, the air of vibration by circular hole outflow puffs the candle out sound wave, study personnel can be made straight
That sees understands the propagation of sound by eyes.
3, in the present invention, which can pull pull rod, replaced or fixed to candle, can also rotate handwheel,
The tilt angle of straight tube is adjusted, hand lever is rotated, stable fixation can be carried out to straight tube, is easy to use.
Detailed description of the invention
Fig. 1 is structure schematic diagram of the invention；
Fig. 2 is the structural schematic diagram of middle ring sleeve of the present invention；
Fig. 3 is the structural schematic diagram of the first rubber ring in the present invention；
Fig. 4 is the structural schematic diagram of the second rubber ring in the present invention；
Fig. 5 is the structural schematic diagram of fixed ring block in the present invention.
Marked in the figure: 1, pedestal；2, fixed ring block；3, candle；4, pillar；5, the first screwed pipe；6, bidirectional helical bar；7,
Handwheel；8, the second screwed pipe；9, straight tube；10, the first rubber ring；11, ring set；12, the second rubber ring；13, screw rod；14, hand lever；
15, arc panel；16, spill spin block；17, the first spring；18, stop collar；19, rubber tissue；20, pressure ring；21, circular hole；22, pin rod；
23, pull rod；24, telescopic rod；25, second spring.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Embodiment one, referring to Fig.1, a kind of sound transmission demonstration teaching aid, including pedestal 1, the top of pedestal 1 are solid by bolt
Surely there are pillar 4 and the first screwed pipe 5, bidirectional helical bar 6 is embedded at the top center of the first screwed pipe 5, bidirectional helical bar 6
The second screwed pipe 8 that the other end is arranged with, and handwheel 7 is welded on the outer wall of bidirectional helical bar 6, pillar 4 and the second screwed pipe 8
Top rotate and be provided with ring set 11, sliding is embedded with straight tube 9 in ring set 11, and the both ends of straight tube 9 are arranged with the first rubber respectively
Cushion rubber 10 and the second rubber ring 12, the lower section that the top of pedestal 1 is located at the second rubber ring 12 are welded with fixed ring block 2, and fixed
Candle 3 is inserted in ring block 2, in use, point lighted candle 3, rotates handwheel 7, bidirectional helical bar 6 can be rotated, and pull straight tube 9
One end rotation, the tilt angle of straight tube 9 is adjusted, can make circular hole 21 be in candle 3 flame top, hit with hand
A rubber tissue 19 for not opening circular hole 21 is bought, the air in straight tube 9 can be vibrated, can also be vibrated therewith positioned at extraneous air, is shaken
Dynamic air passes to sound wave in the ear of study personnel, taps the ear-drum of study personnel, so that study personnel hear sound, just
The propagation of sound is intuitively experienced by ear in scholar person, the air of vibration spreads out of by circular hole 21 sound wave to blow out wax
Candle 3 can make study personnel intuitively understand the propagation of sound by eyes.
Embodiment two welds restraining position ring block in the first rubber ring 10 and the second rubber ring 12 referring to Fig. 2, Fig. 3 and Fig. 4
18, stop collar 18 is provided with rubber tissue 19 far from the side fitting of straight tube 9, and the other side of rubber tissue 19 is provided with pressure ring 20,
And pressure ring 20 is fixed by bolt and stop collar 18, and there are two the total settings of rubber tissue 19, wherein being located in the second rubber ring 12
A rubber tissue 19 center at offer circular hole 21, screw rod 13 is embedded at the top center of ring set 11, screw rod 13 is located at
One end of 11 inside of ring set is arranged with arc panel 15, and one end that screw rod 13 is located in arc panel 15 is welded with spill spin block 16, spiral shell
Bar 13 is welded with hand lever 14 far from one end of arc panel 15, rotates screw rod 13 will pass through hand lever 14, the outside of arc panel 15 is equal
It is even to be welded with the first spring 17, and the inner wall of the other end of the first spring 17 and ring set 11 welds, circular hole 21 is located at the upper of candle 3
Side, so as to air by circular hole 21 puff the candle out 3 flame setting stop collar 18 and pressure ring 20 rubber tissue 19 is fixed,
Fixed bolt can be dismantled, rubber tissue 19 is carried out with changing, after straight tube 9 is inserted into ring set 11, hand lever can be rotated
14, so that hand lever 14 drives screw rod 13 to rotate, so that arc panel 15 squeezes straight tube 9, straight tube 9 is fixed, is easy to
The fixation and disassembly of straight tube 9.
Embodiment three, referring to Fig.1 and Fig. 5, sliding is embedded with pin rod 22 in fixed ring block 2, and pin rod 22 is located at fixed ring
The one end in 2 outside of block is welded with pull rod 23, and pull rod 23 is welded with two telescopic rods 24 close to the side of fixed ring block 2, and two are stretched
The other end of contracting bar 24 and fixed ring block 2 weld, and the outer sheath of two telescopic rods 24 is set there are two second spring 25, and two
The both ends of a second spring 25 are welded with fixed ring block 2 and pull rod 23 respectively, and user can pull pull rod 23, and pull rod 23 can band
Dynamic pin rod 22 is mobile, and two telescopic rods 24 also will become, so that second spring 25 is in tensional state, candle 3 can be put into
In fixed ring block 2, releasing lever 23 can make pin rod 22 be resetted, to candle under the action of 25 restoring force of second spring
3 are fixed, which is easy to replacement and fixation to candle 3, and telescopic rod 24 is socketed to form by extra heavy pipe and thin bar, are similar to umbrella
Bone.
Working principle: in use, pulling pull rod 23, so that pin rod 22 removes fixed ring block 2, second spring 25 can be in drawing
State is stretched, candle 3 is placed into fixed ring block 2, releasing lever 23, under the action of 25 restoring force of second spring, pin rod 22
It will do it reset, candle 3 be fixed, then straight tube 9 is inserted into ring set 11, hand lever 14 is rotated with hand, so that screw rod 13
Rotation drives arc panel 15 to carry out extruding fixation to straight tube 9, rotates handwheel 7, so that bidirectional helical bar 6 rotates, pulls straight
One end of cylinder 9 is mobile, is adjusted to the tilt angle of straight tube 9, so that circular hole 21 is in the top of 3 flame of candle, is hit with hand
A rubber tissue 19 for not opening circular hole 21 is bought, the air in straight tube 9 can be vibrated, can also be vibrated therewith positioned at extraneous air, is shaken
Dynamic air passes to sound wave in the ear of study personnel, taps the ear-drum of study personnel, so that study personnel hear sound, just
The propagation of sound is intuitively experienced by ear in scholar person, the air of vibration spreads out of by circular hole 21 sound wave to blow out wax
Candle 3 can make study personnel intuitively understand the propagation of sound by eyes.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (8)
1. a kind of sound transmission demonstration teaching aid, including pedestal (1), it is characterised in that: the top of the pedestal (1) is solid by bolt
Surely there are pillar (4) and the first screwed pipe (5), be embedded with bidirectional helical bar (6) at the top center of first screwed pipe (5),
The second screwed pipe (8) that the other end of the bidirectional helical bar (6) is arranged with, and be welded on the outer wall of bidirectional helical bar (6)
The top of handwheel (7), the pillar (4) and the second screwed pipe (8), which rotates, to be provided with ring set (11), sliding in the ring set (11)
Dynamic to be embedded with straight tube (9), the both ends of the straight tube (9) are arranged with the first rubber ring (10) and the second rubber ring (12), institute respectively
The top for stating pedestal (1), which is located at below the second rubber ring (12), to be welded with fixed ring block (2), and is plugged in fixed ring block (2)
There are candle (3).
2. a kind of sound transmission demonstration teaching aid as described in claim 1, it is characterised in that: first rubber ring (10) and the
Restraining position ring block (18) are welded in two rubber rings (12), the stop collar (18) is provided with rubber far from the side fitting of straight tube (9)
Skin graft (19), and the other side of rubber tissue (19) is provided with pressure ring (20), and pressure ring (20) passes through bolt and stop collar (18)
It is fixed.
3. a kind of sound transmission demonstration teaching aid as claimed in claim 2, it is characterised in that: the rubber tissue (19) is provided with altogether
Two, wherein offering circular hole (21) at the center for a rubber tissue (19) being located in the second rubber ring (12).
4. a kind of sound transmission demonstration teaching aid as described in claim 1, it is characterised in that: the top center of the ring set (11)
Place is embedded with screw rod (13), and the screw rod (13) is located at one end on the inside of ring set (11) and is arranged with arc panel (15), and screw rod
(13) one end being located in arc panel (15) is welded with spill spin block (16), and the screw rod (13) is welded far from the one end of arc panel (15)
Hand lever (14) are connected to, will pass through hand lever (14) rotation screw rod (13).
5. a kind of sound transmission demonstration teaching aid as claimed in claim 4, it is characterised in that: the outside of the arc panel (15) is equal
It is even to be welded with the first spring (17), and the other end of the first spring (17) and the inner wall of ring set (11) weld.
6. a kind of sound transmission demonstration teaching aid as described in claim 1, it is characterised in that: sliding in the fixed ring block (2)
It is embedded with pin rod (22), and pin rod (22) is located at one end on the outside of fixed ring block (2) and is welded with pull rod (23).
7. a kind of sound transmission demonstration teaching aid as claimed in claim 6, it is characterised in that: the pull rod (23) is close to fixed ring
The side of block (2) is welded with two telescopic rods (24), and the other end of two telescopic rods (24) and fixed ring block (2) are welded,
And the outer sheath of two telescopic rods (24) is set there are two second spring (25), and the both ends of two second springs (25) respectively with
Fixed ring block (2) and pull rod (23) welding.
8. a kind of sound transmission demonstration teaching aid as claimed in claim 3, it is characterised in that: the circular hole (21) is located at candle
(3) top, so that air is puffed the candle out the flame of (3) by circular hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910639884.8A CN110232852A (en) | 2019-07-16 | 2019-07-16 | A kind of sound transmission demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910639884.8A CN110232852A (en) | 2019-07-16 | 2019-07-16 | A kind of sound transmission demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110232852A true CN110232852A (en) | 2019-09-13 |
Family
ID=67855678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910639884.8A Pending CN110232852A (en) | 2019-07-16 | 2019-07-16 | A kind of sound transmission demonstration teaching aid |
Country Status (1)
| Country | Link |
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| CN (1) | CN110232852A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110840398A (en) * | 2019-11-06 | 2020-02-28 | 新乡医学院三全学院 | Motion perception capability testing device |
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| CN207438538U (en) * | 2017-11-20 | 2018-06-01 | 安徽学帮教育咨询有限公司 | A kind of teaching experiment candle-fixing device |
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2019
- 2019-07-16 CN CN201910639884.8A patent/CN110232852A/en active Pending
Patent Citations (7)
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| DE3710749C1 (en) * | 1987-03-31 | 1988-07-07 | Bayerische Motoren Werke Ag | Test stand for simulating deposits of foreign substances, contained in gaseous media, on functional parts in flow systems, in particular in air intake systems of internal-combustion engines |
| CN203870888U (en) * | 2014-05-19 | 2014-10-08 | 石巍 | Sound fire extinguishing demonstrator |
| CN203858791U (en) * | 2014-06-10 | 2014-10-01 | 宁波华茂文教股份有限公司 | Sound energy experimental instrument |
| CN105632298A (en) * | 2016-03-03 | 2016-06-01 | 贵州师范学院 | Multifunctional acoustic demonstration device |
| CN207367450U (en) * | 2017-05-27 | 2018-05-15 | 刘晓凤 | A kind of sound has energy phenomenon demonstrator |
| CN107610566A (en) * | 2017-09-11 | 2018-01-19 | 贵州大学 | A kind of Physical Experiment teaching aid structure for demonstrating sound transmission energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110840398A (en) * | 2019-11-06 | 2020-02-28 | 新乡医学院三全学院 | Motion perception capability testing device |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190913 |