CN205666113U

CN205666113U - Slide wire resistor

Info

Publication number: CN205666113U
Application number: CN201620557359.3U
Authority: CN
Inventors: 戈涵
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-12
Filing date: 2016-06-12
Publication date: 2016-10-26
Anticipated expiration: 2026-06-12

Abstract

The utility model relates to a slide wire resistor, including the supporting baseplate, supporting baseplate upper end one side is equipped with first fixed plate, and the opposite side is equipped with the second fixed plate, the upper end is equipped with first guide rail between first fixed plate, the second fixed plate, and the lower extreme is equipped with the second guide rail, be equipped with first slider on the first guide rail, be equipped with the second slider on the second guide rail, first slider contacts through first touch roller and first resistance wire layer, the second slider contacts through second touch roller and second resistance wire layer. The utility model discloses a displacement of touch roller on the resistance wire layer realizes the change of resistance. Obviously, the wearing and tearing between touch roller and the resistance wire layer are minimum to the life of slide resistance has effectively been prolonged, going on in step of two experiments can be realized simultaneously, the effectual number that reduces the resistor, the cost is reduced simultaneously under the effect on first resistance wire layer and second resistance wire layer.

Description

A kind of slide wire resistor

Technical field

This utility model relates to electrical and electronic technology field, particularly relates to a kind of slide wire resistor.

Background technology

Resistor is the most typically directly referred to as resistance.It is a current limiting element, after resistance is connect in circuit, The resistance of resistor is fixing usually two pins, and it can limit the size of current by its institute's chord road.Resistance can not Change is referred to as fixed resister.What resistance was variable is referred to as potentiometer or rheostat.Preferably resistor is linear, i.e. It is directly proportional to additional instantaneous voltage by the transient current of resistor.Rheostat for dividing potential drop.At exposed resistive element On, pressed against one or two and can move hard contact.Contact position determines the resistance between resistive element either end and contact.

Terminal voltage and electric current have and determine functional relationship, embody electric energy and are converted into the two-terminal device of other form abilities, use word Female R represents, unit is ohm Ω.Practical devices such as bulb, heating wire, resistor etc. is all represented by resistor element.

Slide wire resistance is electronic devices and components conventional in laboratory and power system.General, slide wire resistance includes pottery Being wound with resistance wire layer on pipe and guide rail, and earthenware, guide rail is provided with slide block.So, by slide block on resistance wire layer Displacement, it is achieved the change of resistance between terminal and the terminal of resistance wire layer connection that guide rail connects.Have a disadvantage in that: slide block Realize connecting by being in close contact with resistance wire layer, serious wear therebetween, cause slide wire resistance to use birthday noodle to reduce.Therefore It is necessary to be improved, resistor general only one of which resistance wire layer used in teaching process, the most in use Increase the quantity of resistor, improve cost.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of slide wire resistor.

This utility model is to be achieved through the following technical solutions:

A kind of slide wire resistor, including support baseboard, side, described support baseboard upper end is provided with the first fixed plate, opposite side Being provided with the second fixed plate, between described first fixed plate, the second fixed plate, upper end is provided with the first guide rail, and lower end is provided with second and leads Rail, described first guide rail is provided with the first slide block, and described second guide rail is provided with the second slide block, and described first slide block passes through first Contact wheel and the first resistance wire layer contact, and described second slide block is contacted by the second contact wheel and the second resistance wire layer.

As optimal technical scheme of the present utility model, described first fixed plate, the second fixed plate are arranged in parallel.

As optimal technical scheme of the present utility model, described first contact wheel, the second contact wheel diameter are identical.

As optimal technical scheme of the present utility model, described first resistance wire layer, the second resistance wire layer resistance different or Identical.

Compared with prior art, the beneficial effects of the utility model are: this utility model simple in construction, reasonable in design, This utility model is by arranging the first contact wheel, the second contact wheel, the first resistance wire layer and the second resistance wire layer, and such slip is electric Hinder the change being realized resistance by contact wheel displacement on resistance wire layer.Obviously, the abrasion between contact wheel and resistance wire layer Minimum, thus effectively extend the service life of slide wire resistance, simultaneously in the first resistance wire layer and the effect of the second resistance wire layer The synchronization that can simultaneously realize down two experiments is carried out, and is effectively reduced the number of resistor, reduces cost.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

In figure: 1. support baseboard；2. the first fixed plate；3. the second fixed plate；4. the first guide rail；5. the first slide block；6. One contact wheel；7. the first resistance wire layer；8. the second guide rail；9. the second slide block；10. the second contact wheel；11. second resistance wire layers.

Detailed description of the invention

In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing and enforcement Example, is further elaborated to this utility model.Should be appreciated that specific embodiment described herein is only in order to explain This utility model, is not used to limit this utility model.

Referring to Fig. 1, Fig. 1 is structural representation of the present utility model.

A kind of slide wire resistor, including support baseboard 1, side, described support baseboard 1 upper end is provided with the first fixed plate 2, separately Side is provided with the second fixed plate 3, and wherein said first fixed plate the 2, second fixed plate 3 is arranged in parallel.Described first fixed plate 2, Between second fixed plate 3, upper end is provided with the first guide rail 4, and lower end is provided with the second guide rail 8, and it is sliding that described first guide rail 4 is provided with first Block 5, described second guide rail 8 is provided with the second slide block 9, and described first slide block 5 is by the first contact wheel 6 and the first resistance wire layer 7 Contacting, described second slide block 9 is contacted with the second resistance wire layer 11 by the second contact wheel 10, wherein said first contact wheel 6, the second contact wheel 10 diameter is identical, and described first resistance wire layer the 7, second resistance wire layer 11 resistance is different or identical.

So slide wire resistance realizes the change of resistance by contact wheel displacement on resistance wire layer.Obviously, contact wheel and Abrasion between resistance wire layer is minimum, thus effectively extends the service life of slide wire resistance, simultaneously the first resistance wire layer 7 with The lower synchronization that can simultaneously realize two experiments of effect of the second resistance wire layer 11 is carried out, and is effectively reduced the individual of resistor Number, reduces cost.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this Any amendment, equivalent and the improvement etc. made within the spirit of utility model and principle, should be included in this utility model Protection domain within.

Claims

1. a slide wire resistor, including support baseboard (1), it is characterised in that: described support baseboard (1) side, upper end is provided with One fixed plate (2), opposite side is provided with the second fixed plate (3), and between described first fixed plate (2), the second fixed plate (3), upper end sets Having the first guide rail (4), lower end is provided with the second guide rail (8), and described first guide rail (4) is provided with the first slide block (5), and described second leads Rail (8) is provided with the second slide block (9), and described first slide block (5) is connected with the first resistance wire layer (7) by the first contact wheel (6) Touching, described second slide block (9) is contacted with the second resistance wire layer (11) by the second contact wheel (10).

A kind of slide wire resistor the most according to claim 1, it is characterised in that: described first fixed plate (2), second fix Plate (3) is arranged in parallel.

A kind of slide wire resistor the most according to claim 1, it is characterised in that: described first contact wheel (6), the second contact Wheel (10) diameter is identical.

A kind of slide wire resistor the most according to claim 1, it is characterised in that: described first resistance wire layer (7), the second electricity Resistance silk layer (11) resistance is similar and different.