CN105118590A - Resistance box - Google Patents
Resistance box Download PDFInfo
- Publication number
- CN105118590A CN105118590A CN201510583085.5A CN201510583085A CN105118590A CN 105118590 A CN105118590 A CN 105118590A CN 201510583085 A CN201510583085 A CN 201510583085A CN 105118590 A CN105118590 A CN 105118590A
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- CN
- China
- Prior art keywords
- resistance
- box body
- rod
- box
- radiator fan
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- 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.)
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Abstract
The invention relates to a resistance box. The resistance box comprises a box body, a resistance rod of a U-shaped structure is arranged in the box body, a first connecting end is arranged at one end of the resistance rod, a second connecting rod is arranged at the other end of the resistance rod, and the middle section of the resistance rod makes contact with one end of a sliding rod; the middle of the sliding rod is located in a sliding groove of a guide frame; a radiator fan is arranged at one side in the box body, an air inlet mesh is arranged at the position, located at one side of the radiator fan, of the box body, and an air outlet mesh is arranged at the position, located at the other side of the radiator, of the box body. As the resistance rod and the sliding rod are arranged, in the using process, the sliding rod can move along the resistance rod according to needs of experiments to adjust a resistance value so as to meet the requirements of the experiments, the radiator fan is started, feeds external cold air into the box through the air inlet mesh and then exhausts hot air through the air outlet mesh, the phenomenon that the resistance value of the resistance rod changes due to temperature is effectively reduced, and the experiment accuracy is improved.
Description
Technical field
The present invention relates to electronic technology field, particularly relates to a kind of resistance box.
Background technology
Resistor is generally directly called resistance in daily life.Be a current limiting element, connect by resistance in circuit, the resistance of resistor is fixing is generally two pins, and it can the size of current on its institute's chord road of restricted passage.Resistance is unalterable is called fixed resistor.What resistance was variable is called potentiometer or variable resistance.Desirable resistor is linear, is namely directly proportional to additional instantaneous voltage by the transient current of resistor.For the variable resistance of dividing potential drop.On exposed resistive element, pressed against one or two and can move hard contact.Resistance between contact position determination resistive element either end and contact.
Terminal voltage and electric current have determines functional relation, and embody the two-terminal device that electric energy conversion is other form abilities, represent with letter r, unit is ohm Ω.Practical devices is as bulb, and heating wire, resistor etc. all can be expressed as resistor element.
General and the temperature of the resistance value size of resistive element, material, length, also have cross-sectional area relevant, the physical quantity of gauge resistor temperature influence size is temperature coefficient, and it is defined as the percentage that when temperature often raises 1 DEG C, resistance value changes.The main physical characteristics of resistance is power transformation can be heat energy, and also can say that it is a dissipative cell, electric current is energy in it just produces.Resistance plays dividing potential drop, shunting in circuit usually.Concerning signal, exchange and can pass through resistance with direct current signal.
Current resistance box resistance is generally fixing, and can not meet the requirement of experiment to different resistance, resistance easily generates heat after a period of operation simultaneously, and metapyretic resistance can change, the precision of impact experiment.
Summary of the invention
The object of the invention is, in order to overcome the deficiencies in the prior art, to provide a kind of resistance box.
The present invention is achieved through the following technical solutions:
A kind of resistance box, comprise box body, described tray interior is provided with the resistance bar of the structure that takes the shape of the letter U, described resistance bar one end is provided with the first link, and the other end is provided with the second link, and described resistance bar interlude contacts with sliding bar one end, the chute of leading truck is positioned in the middle of described sliding bar, described tray interior side is provided with radiator fan, and described box body is positioned at radiator fan side and is provided with Inlet Network, and opposite side is provided with Air outlet net.
As the preferred technical solution of the present invention, described resistance bar two ends are fixedly connected with between the first link, the second link.
As the preferred technical solution of the present invention, for removably connecting between described radiator fan and box body.
As the preferred technical solution of the present invention, described Inlet Network, Air outlet net are embedded on box body.
Compared with prior art, the invention has the beneficial effects as follows: structure of the present invention is simple, reasonable in design, the present invention is by arranging resistance bar, sliding bar, so in use, sliding bar can be experimentally needed to move along resistance bar, realize the adjustment of resistance, meet the demand of experiment, radiator fan starts simultaneously, external cold air is discharged tray interior from Inlet Network, is then discharged from Air outlet net by hot-air, the resistance Yin Wendu of effective reduction resistance bar and changing, improves the precision of experiment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1. box body; 2. resistance bar; 3. the first link; 4. the second link; 5. sliding bar; 6. leading truck; 601. chute; 7. radiator fan; 8. Inlet Network; 9. Air outlet net.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1, Fig. 1 is structural representation of the present invention.
A kind of resistance box, comprise box body 1, described box body 1 inside is provided with the resistance bar 2 of the structure that takes the shape of the letter U, and described resistance bar 2 one end is provided with the first link 3, the other end is provided with the second link 4, is fixedly connected with between wherein said resistance bar 2 two ends with the first link 3, second link 4.Described resistance bar 2 interlude contacts with sliding bar 5 one end, the chute 601 of leading truck 6 is positioned in the middle of described sliding bar 5, the described inner side of box body 1 is provided with radiator fan 7, for removably connecting between wherein said radiator fan 7 and box body 1, is convenient to the installation of radiator fan 7 like this.
Described box body 1 is positioned at radiator fan 7 side and is provided with Inlet Network 8, and opposite side is provided with Air outlet net 9, and wherein said Inlet Network 8, Air outlet net 9 are embedded on box body 1.So in use, sliding bar 5 can be experimentally needed to move along resistance bar 2, realize the adjustment of resistance, meet the demand of experiment, radiator fan 7 starts simultaneously, external cold air is discharged box body 1 inside from Inlet Network 8, is then discharged from Air outlet net 9 by hot-air, the resistance Yin Wendu of effective reduction resistance bar 2 and changing, improves the precision of experiment.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a resistance box, comprise box body (1), it is characterized in that: described box body (1) inside is provided with the resistance bar (2) of the structure that takes the shape of the letter U, described resistance bar (2) one end is provided with the first link (3), the other end is provided with the second link (4), described resistance bar (2) interlude contacts with sliding bar (5) one end, the chute (601) of leading truck (6) is positioned in the middle of described sliding bar (5), described box body (1) inner side is provided with radiator fan (7), described box body (1) is gone up and is positioned at radiator fan (7) side and is provided with Inlet Network (8), opposite side is provided with Air outlet net (9).
2. a kind of resistance box according to claim 1, is characterized in that: described resistance bar (2) two ends are fixedly connected with between (4) with the first link (3), the second link.
3. a kind of resistance box according to claim 1, is characterized in that: for removably connecting between described radiator fan (7) and box body (1).
4. a kind of resistance box according to claim 1, is characterized in that: described Inlet Network (8), Air outlet net (9) are embedded on box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510583085.5A CN105118590A (en) | 2015-09-14 | 2015-09-14 | Resistance box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510583085.5A CN105118590A (en) | 2015-09-14 | 2015-09-14 | Resistance box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105118590A true CN105118590A (en) | 2015-12-02 |
Family
ID=54666546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510583085.5A Pending CN105118590A (en) | 2015-09-14 | 2015-09-14 | Resistance box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105118590A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466581A (en) * | 2021-06-02 | 2021-10-01 | 无锡市航鹄科技有限公司 | Simulation method of simulation equipment and power load quick switching device thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009026983A (en) * | 2007-07-20 | 2009-02-05 | Teikoku Tsushin Kogyo Co Ltd | Electronic component |
| CN204010872U (en) * | 2014-08-23 | 2014-12-10 | 李芊慧 | A kind of high school student's experiment slide rheostat |
| CN204348777U (en) * | 2014-12-12 | 2015-05-20 | 上海东昌汽车配件有限公司 | A kind of Battery case |
| CN204926936U (en) * | 2015-09-14 | 2015-12-30 | 陈海花 | Resistance box |
-
2015
- 2015-09-14 CN CN201510583085.5A patent/CN105118590A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009026983A (en) * | 2007-07-20 | 2009-02-05 | Teikoku Tsushin Kogyo Co Ltd | Electronic component |
| CN204010872U (en) * | 2014-08-23 | 2014-12-10 | 李芊慧 | A kind of high school student's experiment slide rheostat |
| CN204348777U (en) * | 2014-12-12 | 2015-05-20 | 上海东昌汽车配件有限公司 | A kind of Battery case |
| CN204926936U (en) * | 2015-09-14 | 2015-12-30 | 陈海花 | Resistance box |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466581A (en) * | 2021-06-02 | 2021-10-01 | 无锡市航鹄科技有限公司 | Simulation method of simulation equipment and power load quick switching device thereof |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151202 |
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| WD01 | Invention patent application deemed withdrawn after publication |