CN209895861U

CN209895861U - Combined sliding rheostat

Info

Publication number: CN209895861U
Application number: CN201921118262.2U
Authority: CN
Inventors: 陈健; 朱纯; 周锡生; 张薇; 朱云; 江正仙
Original assignee: Jiangnan University
Current assignee: Jiangnan University
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-01-03
Anticipated expiration: 2029-07-17

Abstract

The utility model discloses a combined slide rheostat, including resistance coil first, resistance coil second, hollow cylinder, support, slide bar, slip first second. The sliding head A and the sliding head B are respectively provided with a binding post, the sliding rod is made of a non-metal material, the resistivity of the resistance coil A is larger than that of the resistance coil B, and the total resistance of the resistance coil A is larger than that of the resistance coil B. The utility model discloses simple structure, the connected mode is nimble various, and the usage is extensive, is favorable to the meticulous regulation and control of resistance, electric current, voltage etc. in the circuit.

Description

Combined sliding rheostat

Technical Field

The utility model belongs to the technical field of electricity experimental device, a slide rheostat is related to, specifically a combined slide rheostat is provided.

Background

The sliding rheostat is a commonly used circuit component and is often used in electrical experiments. The slide rheostat generally comprises a resistance coil wound on a porcelain tube, a metal slide rod arranged above the resistance coil, a slide head capable of sliding along the surfaces of the metal slide rod and the resistance coil, and the like, and can change the size of an access resistor through the movement of the position of the slide head, thereby playing the role of controlling a circuit, and being commonly used for current limiting or voltage dividing and the like in the circuit. The existing slide rheostat has no trimming function of resistance value, so that inconvenience is brought when the current or the voltage of a circuit needs to be finely adjusted.

Disclosure of Invention

The purpose of the utility model is to overcome the above-mentioned shortcoming of traditional slip varistor, develop a combined slip varistor who has coarse adjusting and fine setting function.

In order to solve the technical problem, the utility model adopts the following technical proposal that the combined slide rheostat comprises a resistance coil A, a resistance coil B, a hollow cylinder, a bracket, a slide bar, a slide head A and a slide head B; the hollow cylinder is a ceramic cylinder, and two ends of the hollow cylinder are fixed on the bracket; the resistance coil A and the resistance coil B are respectively sleeved on the hollow cylinder, the resistance coil A and the resistance coil B are not overlapped with each other, a first binding post and a second binding post are respectively arranged at two ends of the resistance coil A, and a third binding post and a fourth binding post are respectively arranged at two ends of the resistance coil B; the sliding rod is erected right above the hollow cylinder along the length direction of the hollow cylinder, and two ends of the sliding rod are fixedly connected with the bracket; the upper ends of the sliding head A and the sliding head B are respectively movably sleeved on the sliding rod and can slide along the sliding rod, and the lower ends of the sliding head A and the sliding head B are provided with metal contact pieces which are respectively in conductive contact with the exposed belts on the resistance coil A and the resistance coil B; the sliding head A and the sliding head B are respectively provided with a fifth binding post and a sixth binding post which are connected with respective metal contact pieces; the sliding rod is made of a non-metal material; the resistivity of the resistance coil A is larger than that of the resistance coil B, and the total resistance of the resistance coil A is larger than that of the resistance coil B.

The further technical scheme is as follows: the total resistance of the resistance coil B is one tenth of that of the resistance coil A.

The further technical scheme is as follows: the bracket is made of non-metallic materials.

Due to the design above the adoption, the utility model discloses can produce following beneficial effect: the utility model provides a resistance coil first, resistance coil second both can regard as two independent slide rheostat exclusive use separately, can realize multiple built-up connection again, no matter be used for the partial pressure, still be used for the current-limiting, can both carry out the coarse adjustment and the fine setting that insert resistance size, are favorable to the accurate regulation and control of resistance, electric current, voltage. In addition, the resistance coil A and the resistance coil B share the hollow cylinder, the support, the sliding rod made of non-metal materials and the support, and material and cost are saved. The utility model discloses simple structure, the connected mode is nimble various, and the usage is extensive, is favorable to the meticulous regulation and control of circuit.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic view of the present invention.

Fig. 2, fig. 3, fig. 4, and fig. 5 are schematic diagrams of four typical circuit connections for current limiting according to the present invention.

Fig. 6 and 7 are schematic diagrams of two typical circuit connections for voltage division according to the present invention.

In the figure: 1. the resistance coil A, 2, 3, a hollow cylinder, 4, a bracket, 5, a sliding rod, 6, a sliding head A, 7, a sliding head B, 11, a first wiring terminal, 12, a second wiring terminal, 21, a third wiring terminal, 22, a fourth wiring terminal, 61, a fifth wiring terminal and 71, a sixth wiring terminal.

Detailed Description

As shown in fig. 1, the hollow cylinder 3 is a porcelain cylinder, and both ends of the hollow cylinder 3 are fixed on the bracket 4. The resistance coil A1 and the resistance coil B2 are respectively sleeved on the hollow cylinder 3, a first binding post 11 and a second binding post 12 are respectively arranged at two ends of the resistance coil A1, and a third binding post 21 and a fourth binding post 22 are respectively arranged at two ends of the resistance coil B2. The slide bar 5 is erected right above the hollow cylinder 3 along the length direction of the hollow cylinder 3, and two ends of the slide bar 5 are fixedly connected with the bracket 4. The upper ends of the sliding head A6 and the sliding head B7 are movably sleeved on the sliding rod 5 respectively and can slide along the sliding rod 5, and the lower ends of the sliding head A6 and the sliding head B7 are provided with metal contact pieces which are in conductive contact with the exposed belts on the resistance coil A1 and the resistance coil B2 respectively. The first slider 6 and the second slider 7 are respectively provided with a fifth binding post 61 and a sixth binding post 71. The slide bar 5 is made of non-metallic material. In order to facilitate coarse adjustment and fine adjustment of the connected resistor, the resistivity of the resistor coil A1 is larger than that of the resistor coil B2, and the total resistance of the resistor coil B2 is one tenth of that of the resistor coil A1. The bracket 4 is made of non-metallic material.

Fig. 2, fig. 3, fig. 4, and fig. 5 are schematic diagrams of four different connections for current limiting according to the present invention, and the shaded portion of the resistor icon in the diagrams is the actual connected resistor.

Referring to fig. 2 and 1, the second terminal 12 is connected to the third terminal 21 and the fifth terminal 61, respectively, the fourth terminal 22 is connected to the sixth terminal 71, the first terminal 11 and the fourth terminal 22 are connected to an external circuit for current limiting adjustment, the sliding head 6 is used for coarse adjustment, and the sliding head 7 is used for fine adjustment.

Referring to fig. 3 and 1, the second terminal 12 is connected with the third terminal 21, the fifth terminal 61 is connected with the sixth terminal 71, the first terminal 11 and the fourth terminal 22 are connected with an external circuit for current limiting adjustment, the sliding head 6 is used for coarse adjustment, and the sliding head 7 is used for fine adjustment.

Referring to fig. 4 and 1, the second terminal 12 is connected to the third terminal 21, the fifth terminal 61 is connected to the first terminal 11, the sixth terminal 71 is connected to the fourth terminal 22, the first terminal 11 and the fourth terminal 22 are connected to an external circuit for current limiting adjustment, the slider 6 is used for coarse adjustment, and the slider 7 is used for fine adjustment.

Referring to fig. 5 and 1, the first terminal 11 is connected to the third terminal 21, the second terminal 12 is connected to the fifth terminal 61, the sixth terminal 71 and the fourth terminal 22, the first terminal 11 and the fourth terminal 22 are connected to an external circuit for current limiting adjustment, at this time, the resistance coil a 1 is connected in parallel with the access resistance of the resistance coil b 2, the slider 7 is used for coarse adjustment, and the slider 6 is used for fine adjustment.

Fig. 6 and 7 are schematic diagrams of two different connections for the voltage dividing circuit according to the present invention.

Referring to fig. 6 and 1, the second terminal 12 is connected to the third terminal 21, the first terminal 11 and the fourth terminal 22 are connected to the power source E, the fifth terminal 61 and the sixth terminal 71 are connected to the load Rx, and the sliding head 6 and the sliding head 7 are moved to adjust the voltage of the load terminal, wherein the sliding head 6 is used for coarse adjustment and the sliding head 7 is used for fine adjustment.

Referring to fig. 7 and 1, the second terminal 12 is connected with the sixth terminal 71, the first terminal 11 is connected with the third terminal 21, the third terminal 21 and the fourth terminal 22 are connected with the power supply E, the first terminal 11 and the fifth terminal 61 are connected with the load Rx, and the load terminal voltage can be adjusted by moving the slider 6 and the slider 7, wherein the slider 7 is used for coarse adjustment and the slider 6 is used for fine adjustment.

Claims

1. A combined slide rheostat comprises a resistance coil A, a resistance coil B, a hollow cylinder, a support, a slide rod, a slide head A and a slide head B; two ends of the hollow cylinder are fixed on the bracket; the resistance coil A and the resistance coil B are respectively sleeved on the hollow cylinder, the resistance coil A and the resistance coil B are not overlapped with each other, a first binding post and a second binding post are respectively arranged at two ends of the resistance coil A, and a third binding post and a fourth binding post are respectively arranged at two ends of the resistance coil B; the sliding rod is erected right above the hollow cylinder along the length direction of the hollow cylinder, and two ends of the sliding rod are fixedly connected with the bracket; the upper ends of the sliding head A and the sliding head B are respectively movably sleeved on the sliding rod and can slide along the sliding rod, and the lower ends of the sliding head A and the sliding head B are provided with metal contact pieces which are respectively in conductive contact with the exposed belts on the resistance coil A and the resistance coil B; the method is characterized in that: the sliding head A and the sliding head B are respectively provided with a fifth binding post and a sixth binding post which are connected with respective metal contact pieces; the sliding rod is made of a non-metal material; the resistivity of the resistance coil A is larger than that of the resistance coil B, and the total resistance of the resistance coil A is larger than that of the resistance coil B.

2. The combination slide rheostat of claim 1, wherein: the total resistance of the resistance coil B is one tenth of that of the resistance coil A.

3. The combination slide rheostat of claim 1, wherein: the bracket is made of non-metallic materials.