CN206584641U - A kind of demonstration device for action of fuse - Google Patents
A kind of demonstration device for action of fuse Download PDFInfo
- Publication number
- CN206584641U CN206584641U CN201720191058.8U CN201720191058U CN206584641U CN 206584641 U CN206584641 U CN 206584641U CN 201720191058 U CN201720191058 U CN 201720191058U CN 206584641 U CN206584641 U CN 206584641U
- Authority
- CN
- China
- Prior art keywords
- fuse
- indicator lamp
- demonstration device
- device body
- action
- 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 kind of demonstration device for action of fuse, including demonstration device body, the upper end of the demonstration device body, which is inlayed, is provided with transformer, voltmeter, first indicator lamp, second indicator lamp, broken circuit alarmer and fuse, the transformer, voltmeter, first indicator lamp, second indicator lamp, the two ends of broken circuit alarmer and fuse offer Wiring port respectively, first indicator lamp and the second indicator lamp are electrically connected by the conductor in parallel with controlling switch, the broken circuit alarmer and fuse are electrically connected by conductor in parallel, the transformer, voltmeter, the first indicator lamp and the second indicator lamp that are connected in parallel and the broken circuit alarmer and fuse that are connected in parallel constitute loop by wired in series.First indicator lamp and the series connection of the second indicator lamp are easy to preferably demonstration by the utility model in the loop, while in the two ends broken circuit alarmer in parallel of fuse, when action of fuse is demonstrated, being easy to observation of students, good demonstration effect.
Description
Technical field
The utility model is related to action of fuse demonstration equipment technical field, specially a kind of demonstration device for action of fuse.
Background technology
The device of demonstration action of fuse provided in existing Middle School Physics teaching material is to be directly accessed 220v alternating currents
In the case of source, by demonstration fuse series connection access circuit, then make short circuit, blown fuse, to demonstrate fuse
Effect (the junior middle school of protection circuit《Physics》Second page 273-74 of second edition teaching reference book in 1987).The device lack
Point is dangerous.First the operating voltage of the device is exchange 220v, careless slightly in operating process, will occur electric shock thing
Therefore；Second fuse is that due to overtension, electric current is excessive, can be produced during plug insertion socket very big in moment fusing
Electric spark, during three blown fuses, the fuse of splashing melts grain and is also possible to jeopardize front-seat student.
Utility model content
The purpose of this utility model is to provide a kind of demonstration device for action of fuse, to solve to propose in above-mentioned background technology
The problem of.
To achieve the above object, the utility model provides following technical scheme：A kind of demonstration device for action of fuse, including drill
Show device body, the upper end of the demonstration device body inlay transformer is installed, it is voltmeter, the first indicator lamp, the second indicator lamp, disconnected
Road alarm and fuse, the transformer, voltmeter, the first indicator lamp, the second indicator lamp, broken circuit alarmer and fuse
Two ends offer Wiring port respectively, and first indicator lamp and the second indicator lamp pass through the conductor in parallel electricity with controlling switch
Connection, the broken circuit alarmer and fuse electrically connected by conductor in parallel, the transformer, voltmeter, the be connected in parallel
One indicator lamp and the second indicator lamp and the broken circuit alarmer and fuse that are connected in parallel constitute loop by wired in series.
It is preferred that, the outer end of the demonstration device body is provided with external power interface, external power interface by wire with
Transformer is electrically connected.
It is preferred that, the front end of the demonstration device body is provided with master switch and relay indicating light.
It is preferred that, the inside of the demonstration device body is divided into the first cabinet and the second cabinet, the first cabinet and
The front end of second cabinet is provided with handle, and handle uses embedded design.
It is preferred that, the upper end of the demonstration device body is slidably fitted with transparent protective shield, and transparent protective shield is provided with handle,
Handle uses embedded design.
It is preferred that, leveling pedestal, the outer end peace of leveling pedestal are separately installed with the bottom corner of the demonstration device body
Equipped with leveling knob.
Compared with prior art, the beneficial effects of the utility model are：The utility model, be connected in parallel first is indicated
Preferably demonstration is easy in lamp and the series connection of the second indicator lamp in the loop, while in the two ends broken circuit alarmer in parallel of fuse,
When action of fuse is demonstrated, when there is failure open circuit, broken circuit alarmer is alarmed, and is easy to the reality of observation of students size fusible circuit, breaker
When situation and the working condition of the first indicator lamp and the second indicator lamp contrasted, preferably allow students' response to the work of fuse
With the meaning and purpose with demonstration, while the leveling pedestal that the bottom of demonstration device body is installed ensure that the machine of demonstration device body
Body is steady, and the first cabinet and the second cabinet that inside is opened up are respectively used to storage wire and small-sized repair apparatus, are easy to more
Good management and the repair and maintenance to equipment in itself, when demonstrating action of fuse, transparent protective shield is closed, is easy to protection to learn
Raw and teacher, improves safety coefficient, and design is simple, and manufacturing cost is cheap, it is adaptable to the use in middle school physical experiment classroom, has
Good market popularization value.
Brief description of the drawings
Fig. 1 is structure chart of the present utility model；
Fig. 2 is outside drawing of the present utility model；
Fig. 3 is front view of the present utility model；
Fig. 4 is rearview of the present utility model.
In figure：1- external power interfaces；2- transformers；3- Wiring ports；4- demonstration device bodies；5- voltmeters；6- first
Indicator lamp；7- controlling switches；The indicator lamps of 8- second；9- wires；10- broken circuit alarmers；11- fuses；12- transparent protective shields；
13- handles；The cabinets of 14- first；The cabinets of 15- second；16- master switch；17- relay indicating lights；18- leveling pedestals；19- is adjusted
Flat knob；20- handles.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Refer to Fig. 1-4, a kind of embodiment that the utility model is provided：A kind of demonstration device for action of fuse, including demonstration
Device body 4, the upper end of demonstration device body 4 inlay transformer 2 is installed, it is voltmeter 5, the first indicator lamp 6, the second indicator lamp 8, disconnected
Road alarm 10 and fuse 11, the effect for fuse 11, which is demonstrated, to be used, transformer 2, voltmeter 5, the first indicator lamp 6, the
The two ends of two indicator lamps 8, broken circuit alarmer 10 and fuse 11 offer Wiring port 3 respectively, are easy to be connected by wire 9
Connect, a loop can be constituted, the first indicator lamp 6 and the second indicator lamp 8 are electrically connected by the parallel connection of wire 9 with controlling switch 7
Connect, broken circuit alarmer 10 and fuse 11 are electrically connected by the way that wire 9 is in parallel, and transformer 2, voltmeter 5, first be connected in parallel refer to
Show the indicator lamp 8 of lamp 6 and second and the broken circuit alarmer 10 and fuse 11 that are connected in parallel be by the loop in series of wire 9,
It ensure that the perfect demonstration that fuse 11 is acted on.
The outer end of demonstration device body 4 is provided with external power interface 1, and external power interface 1 passes through wire 9 and transformer 2
Electrical connection, works for equipment and provides stable electric power, and the front end of demonstration device body 4 is provided with master switch 16 and relay indicating light 17,
The electric power of demonstration device body 4 can be controlled, it is ensured that safety during demonstration is there is provided safety coefficient, and the inside of demonstration device body 4 is set up separately
Into the first cabinet 14 and the second cabinet 15, the front end of the first cabinet 14 and the second cabinet 15 is provided with handle 20, handle
20 use embedded design, can be used in storage wire 9 and small-sized repair apparatus, are easy to carry out repair and maintenance to equipment, convenient
Management, the upper end of demonstration device body 4 is slidably fitted with transparent protective shield 12, and transparent protective shield 12 is provided with handle 13, handle 13
Using embedded design, can in demonstration protection student and teacher personal safety, usually can protection equipment do not fall ash,
Leveling pedestal is separately installed with the service life of extension device, the precision of protection equipment, the bottom corner of demonstration device body 4
18, the outer end of leveling pedestal 18 is provided with leveling knob 19, the fuselage regulation of demonstration device body 4 can be arrived into poised state.
Specifically used mode：The utility model, during demonstration：Teacher is connected transformer 2, voltmeter 5, parallel connection by wire 9
The first indicator lamp 6 and the second indicator lamp 8 that connect and the fuse 11 and broken circuit alarmer 10 that are connected in parallel are together in series composition
One loop, teacher is plugged on external power supply by one end of wire 9, and the other end is plugged on the external electricity of demonstration device body 4
On source interface 1, electric power is provided for whole circuit, by the unlatching of master switch 16, demonstration device body 4 is powered, and passes through controlling switch
7, the first indicator lamp 6 and the second indicator lamp 8 are lighted, and represent that loop is normal, when disconnecting controlling switch 7, whole loop short circuit, are protected
The dangerous protective loop of silk 11 fusing, now broken circuit alarmer 10 is alarmed, and facilitates student intuitively to experience the effect of fuse 11.
At the end of：Teacher closes master switch 16, and demonstration device body 4 is powered off, and wire 9 is pulled, neatly kept well, preserves
In the inside of the first cabinet 14, transparent protective shield 12 is closed, it is to avoid the surface of demonstration device body 4 falls ash.
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Claims (6)
1. a kind of demonstration device for action of fuse, including demonstration device body (4), it is characterised in that：The demonstration device body (4) it is upper
End inlay be provided with transformer (2), voltmeter (5), the first indicator lamp (6), the second indicator lamp (8), broken circuit alarmer (10) and
Fuse (11), the transformer (2), voltmeter (5), the first indicator lamp (6), the second indicator lamp (8), broken circuit alarmer (10)
Wiring port (3) is offered respectively with the two ends of fuse (11), and first indicator lamp (6) and the second indicator lamp (8) pass through
Wire (9) parallel connection electrical connection with controlling switch (7), the broken circuit alarmer (10) and fuse (11) pass through wire (9)
Parallel connection electrical connection, the transformer (2), voltmeter (5), the first indicator lamp (6) being connected in parallel and the second indicator lamp (8) and
The broken circuit alarmer (10) and fuse (11) being connected in parallel pass through wire (9) loop in series.
2. a kind of demonstration device for action of fuse according to claim 1, it is characterised in that：The demonstration device body (4)
Outer end is provided with external power interface (1), and external power interface (1) is electrically connected by wire (9) with transformer (2).
3. a kind of demonstration device for action of fuse according to claim 1, it is characterised in that：The demonstration device body (4)
Front end is provided with master switch (16) and relay indicating light (17).
4. a kind of demonstration device for action of fuse according to claim 1, it is characterised in that：The demonstration device body (4)
Inside is divided into the front end of the first cabinet (14) and the second cabinet (15), the first cabinet (14) and the second cabinet (15)
Provided with handle (20), handle (20) uses embedded design.
5. a kind of demonstration device for action of fuse according to claim 1, it is characterised in that：The demonstration device body (4)
Upper end is slidably fitted with transparent protective shield (12), and transparent protective shield (12) is provided with handle (13), and handle (13) is using embedded
Design.
6. a kind of demonstration device for action of fuse according to claim 1, it is characterised in that：The demonstration device body (4)
Leveling pedestal (18) is separately installed with the corner of bottom, the outer end of leveling pedestal (18) is provided with leveling knob (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720191058.8U CN206584641U (en) | 2017-03-01 | 2017-03-01 | A kind of demonstration device for action of fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720191058.8U CN206584641U (en) | 2017-03-01 | 2017-03-01 | A kind of demonstration device for action of fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206584641U true CN206584641U (en) | 2017-10-24 |
Family
ID=60091580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720191058.8U Expired - Fee Related CN206584641U (en) | 2017-03-01 | 2017-03-01 | A kind of demonstration device for action of fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206584641U (en) |
-
2017
- 2017-03-01 CN CN201720191058.8U patent/CN206584641U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20180301 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |