Internal winding resistor

Abstract

The utility model discloses an internal winding resistor, which particularly relates to the technical field of resistors and comprises an insulating rod, a notch groove is arranged on the outer surface of the insulating rod, a resistor winding is arranged in the middle of the notch groove, iron caps are symmetrically sleeved at two ends of the insulating rod, a sealing ring is arranged on one side of each iron cap, and a groove is arranged on the other side of each iron cap. The side, close to the groove, of the iron cap is fixedly connected with a wire, and the insulating rod is sleeved with an insulating cylinder. According to the utility model, the groove matched with the resistor winding wire is arranged in the iron cap, so that when the iron cap is sleeved at two ends of the insulating rod, the iron cap is tightly attached to the resistor winding wire, and the iron cap can only rotate to be separated from the insulating rod through the matching of the resistor winding wire and the groove, but the iron cap can only rotate through the anti-skid groove on the surface of the iron cap; according to the iron cap, the attaching strength of the iron cap and the insulating rod can be improved after the insulating coating is arranged, the iron cap is prevented from rotating, and therefore the iron cap cannot be loosened when the iron cap is extruded.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of resistance, more specifically, the utility model relates to an inner winding resistance. BACKGROUND

[0002] Resistance is a physical quantity, which represents the size of the hindering effect of a conductor on electric current in physics. The greater the resistance of a conductor, the greater the hindering effect of the conductor on electric current. Different conductors generally have different resistances. Resistance is a characteristic of a conductor itself. Resistance will cause changes in electron flow. The smaller the resistance, the greater the electron flow. Conversely, superconductors have no resistance.

[0003] Winding resistance is made by winding nickel-chromium wire or manganese-copper wire, constantan wire on a resistance rod. The resistance rod is a tube-shaped, flat-shaped, or other shape made of ceramic, plastic, metal coated with an insulating layer. Winding resistance has high resistance precision, high power, low working noise, stability, reliability, and high temperature resistance.

[0004] Most existing winding resistors have a structure in which resistance wire is wound around a resistance rod, iron caps are provided on the left and right sides of the resistance rod, and pins are led out from one side of the iron caps. However, the iron caps are directly covered on both ends of the resistance rod and are sprayed with an insulating layer. The surface and inner surface of the iron caps are smooth, which can cause the iron caps to loosen or the insulating layer on the surface to fall off when the iron caps are pressed or rubbed, affecting the use effect. Therefore, an inner winding resistance is proposed. SUMMARY

[0005] To overcome the above-mentioned defects of the prior art, the utility model provides an inner winding resistance to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an inner winding resistance, comprising an insulating rod, a groove is formed on the outer surface of the insulating rod, an electric resistance winding is arranged in the middle part of the groove, the electric resistance winding is limited by the groove, which improves the stability of the electric resistance winding in the middle part of the groove and prevents the electric resistance winding from sliding in the middle part of the insulating rod during processing and production, iron caps are symmetrically arranged on both ends of the insulating rod, the iron caps are attached to the electric resistance winding through the iron caps, a sealing ring is arranged on one side of the iron cap, and a groove is formed on the other side, the sealing ring improves the sealing property between the iron cap and the insulating rod, a wire is fixedly connected to the side of the iron cap close to the groove, which facilitates installation and use, and an insulating cylinder is arranged outside the insulating rod to play an insulating role.

[0007] The middle part of the insulating barrel is sleeved with an outer winding wire, the resistance intensity can be increased in a limited volume through the outer winding wire, the two ends of the outer winding wire are fixedly connected with horizontal rods, the outer winding wire is conveniently connected with the iron cap through the horizontal rods, one end of the horizontal rod is provided with a welding point which is welded on the iron cap, and the connection is convenient for use, the outer part of the insulating barrel is provided with insulating paint, the outer surface of the insulating paint is provided with color code marks, the insulating paint plays a role of insulation while protecting the outside, and the color code marks are convenient for observation and use.

[0008] Preferably, the insulating rod is a porcelain rod, the insulating barrel is insulating resin paint, and the outer winding wire is arranged in the middle part of the insulating paint, so that the insulating effect is improved, the insulating paint is difficult to fall off, and the use effect is improved.

[0009] Preferably, the inner cavity of the iron cap is provided with a groove matched with the resistance winding wire, the resistance winding wire is arranged in the groove, and the surface of the iron cap is provided with an anti-skid groove, one end of the resistance winding wire can be located in the inner groove of the iron cap through rotation, the connection and fitting strength of the iron cap and the resistance winding wire are improved, the connection effect of the iron cap and the resistance winding wire is not affected by sliding during use, the combination connection strength is improved, the connection strength of the iron cap and the insulating paint is improved through the anti-skid groove, and the insulating paint is prevented from falling off.

[0010] Preferably, the diameter of the insulating barrel is the same as that of the iron cap, the insulating barrel is arranged between the two sealing rings, and the insulating barrel and the insulating paint are made of the same material, the exposed part of the resistance winding wire is wrapped by the insulating barrel, insulation between the two iron caps is realized, and the insulating barrel and the insulating paint can be wrapped outside the iron cap and the resistance winding wire in a dip coating manner, and the insulation strength is improved.

[0011] Preferably, the horizontal rod is located on one side of the iron cap, and the welding point is fixedly connected with the iron cap, so that the outer winding wire is conveniently connected with the iron cap through the horizontal rod and the welding point.

[0012] Preferably, the two ends of the insulating paint are sleeved outside the iron cap, the outer sides of the two ends of the insulating paint are provided with chamfers, and the two ends of the insulating paint are located in the middle part of the groove, so that the outer part of the iron cap is insulated and protected by the insulating paint, the insulation and protection strength of the iron cap by the insulating paint is improved through the fact that the two ends of the insulating paint are located in the groove, and the use effect is improved.

[0013] The technical effects and advantages of the utility model are as follows:

[0014] The utility model discloses a first through the recess that is set up with resistance wire adaptation in the inside of iron cap can be when the iron cap cover is in the both ends of insulating stick, and the resistance wire is closely attached and passes through the cooperation of resistance wire and recess, and iron cap wants to separate only rotation with insulating stick, but through the antiskid groove of iron cap surface, can increase the adhesion strength of iron cap and insulating stick after setting up insulating paint, avoid the rotation of iron cap, thereby can when iron cap is extruded, iron cap will not loosen, and through the transverse rod that is set up in the outside of iron cap, in order to make insulating paint completely wrap transverse rod, need to increase the thickness of insulating paint, further improve the wear -resisting effect, and the insulating paint is not easy to fall off, improve the use effect;

[0015] The utility model discloses still through the recess that sets up to resistance wire limit, avoid the insulating stick and the resistance wire and produce the sliding, improve the connecting effect, and through the setting of outer wire, can increase the resistance intensity under the limited volume, improve the use effect, and through the recess that sets up, can when dipping insulating paint make insulating paint enter the inside of recess, improve the insulating package strength of iron cap, and through the insulating cylinder, make the resistance wire and outer wire separate, improve the use effect;

[0016] Summarizing, through the mutual influence of above-mentioned multiple effects, can increase the installation strength of iron cap, improve the thickness of insulating paint simultaneously, and increase the connecting strength of insulating paint and iron cap, improve the wear -resisting effect, and the insulating paint is not easy to fall off. DRAWINGS

[0017] Fig. 1 It is the whole structure schematic diagram of the utility model.

[0018] Fig. 2 It is the split structure schematic diagram of insulating paint, outer wire and insulating cylinder of the utility model.

[0019] Fig. 3 It is the whole split structure schematic diagram of the utility model.

[0020] The drawing sign is: 1, insulating stick;2, groove;3, resistance wire;4, iron cap;5, heat shrinkable rubber ring;6, recess;7, wire;8, insulating cylinder;9, outer wire;10, transverse rod;11, welding spot;12, insulating paint;13, color code mark. Specific implementation

[0021] The technical scheme in the utility model embodiment will be described clearly and completely in combination with the drawings in the utility model embodiment, and obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor belong to the scope of the utility model protection.

[0022] As attached Figs. 1-3 The internally wound resistor shown includes an insulating rod 1. A groove 2 is formed on the outer surface of the insulating rod 1. A resistor winding 3 is arranged in the middle of the groove 2. The groove 2 limits the resistor winding 3, improving the stability of the resistor winding 3 in the middle of the groove 2 and preventing the resistor winding 3 from sliding in the middle of the insulating rod 1 during processing. Iron caps 4 are symmetrically fitted at both ends of the insulating rod 1. The iron caps 4 are attached to the resistor winding 3. A sealing ring 5 is provided on one side of the iron cap 4, and a groove 6 is formed on the other side. The sealing ring 5 improves the sealing between the iron cap 4 and the insulating rod 1. A wire 7 is fixedly connected to the side of the iron cap 4 near the groove 6. The wire 7 facilitates installation and use. An insulating cylinder 8 is fitted on the outside of the insulating rod 1 to provide insulation.

[0023] An outer winding 9 is fitted in the middle of the insulating cylinder 8. The resistance strength can be increased within a limited volume by the outer winding 9. Both ends of the outer winding 9 are fixedly connected to a crossbar 10. The crossbar 10 facilitates the connection of the outer winding 9 to the iron cap 4. One end of the crossbar 10 is provided with a welding point 11, which is welded to the iron cap 4 for easy connection. The outside of the insulating cylinder 8 is covered with an insulating coating 12. The outer surface of the insulating coating 12 is marked with a color code 13. The insulating coating 12 provides external protection while also providing insulation. The color code 13 facilitates observation and use.

[0024] As attached Figs. 1-3As shown, the insulating rod 1 is provided as a porcelain rod, the insulating cylinder 8 is provided as an insulating resin coating, the outer winding 9 is arranged in the middle of the insulating coating 12, the inner cavity of the iron cap 4 is provided with a groove matched with the resistance winding 3, the resistance winding 3 is arranged in the groove, the surface of the iron cap 4 is provided with an anti-skid groove, the diameter of the insulating cylinder 8 is the same as that of the iron cap 4, the insulating cylinder 8 is arranged between the two sealing rings 5, the material of the insulating cylinder 8 is the same as that of the insulating coating 12, the cross rod 10 is located on one side of the iron cap 4, the welding point 11 is fixedly connected with the iron cap 4, the two ends of the insulating coating 12 are sleeved outside the iron cap 4, the outer sides of the two ends of the insulating coating 12 are provided as chamfers, the two ends of the insulating coating 12 are located in the middle of the groove 6, the insulating effect is improved, the insulating coating 12 is difficult to fall off, the use effect is improved, the one end of the resistance winding 3 can be located in the inner groove of the iron cap 4 through the groove in the middle of the iron cap 4 in a rotating manner, the connection and fitting strength of the iron cap 4 and the resistance winding 3 is improved, and the connection effect of the iron cap 4 and the resistance winding 3 is not affected due to sliding in use, the combination connection strength is improved, the connection strength of the iron cap 4 and the insulating coating 12 is improved through the anti-skid groove, the insulating coating 12 is prevented from falling off, the exposed part of the resistance winding 3 is wrapped by the insulating cylinder 8, insulation between the two iron caps 4 is realized, and the insulating cylinder 8 and the insulating coating 12 can be wrapped outside the iron cap 4 and the resistance winding 3 in a dipping manner, the insulation strength is improved, the outer winding 9 is connected with the iron cap 4 through the cross rod 10 and the welding point 11, the outer part of the iron cap 4 is insulated and protected by the insulating coating 12, and the insulation and protection strength of the iron cap 4 by the insulating coating 12 is improved, and the use effect is improved.

[0025] The working principle of the utility model is as follows: in use, the resistance winding 3 is spirally installed in the middle of the groove 2 and is limited by the groove 2, then the iron cap 4 is spirally sleeved on the two ends of the insulating rod 1, so that the resistance winding 3 is located in the inner groove of the iron cap 4, the installation position of the iron cap 4 is limited, the resistance winding 3 and the insulating rod 1 are tightened by the sealing ring 5, and the position of the iron cap 4 is fixed.

[0026] The insulating cylinder 8 is formed outside the insulating rod 1 and the resistance winding 3 in a dipping manner, the diameter of the insulating cylinder 8 is the same as that of the iron cap 4, then the outer winding 9 is sleeved outside the insulating cylinder 8, the two cross rods 10 are located on one side of the iron cap 4, then welding is carried out, the cross rod 10 is welded with the iron cap 4, the welding point 11 is formed, finally the insulating coating 12 is formed outside the insulating cylinder 8 and the sealing ring 5 in a dipping manner, and the color code mark 13 is arranged on the outer surface of the insulating coating 12, so that the utility model is completed.

[0027] Two iron caps 4 are connected by outer winding 9 and resistance winding 3, which can increase the resistance intensity under limited volume, and improve the adhesion strength of insulating paint 12 and iron cap 4, the connection strength of iron cap 4 and resistance winding 3 through the recess inside iron cap 4 and the external anti-skid groove, thereby improving the product quality.

[0028] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An internally wired resistor comprising an insulating rod (1), characterized in that: The outer surface of the insulating rod (1) is provided with a notch (2), the middle part of the notch (2) is provided with a resistance winding (3), the two ends of the insulating rod (1) are symmetrically provided with an iron cap (4), one side of the iron cap (4) is provided with a sealing ring (5), the other side is provided with a groove (6), the side of the iron cap (4) close to the groove (6) is fixedly connected with a wire (7), the outer part of the insulating rod (1) is provided with an insulating cylinder (8); The middle part of the insulating cylinder (8) is provided with an outer winding (9), the two ends of the outer winding (9) are fixedly connected with a cross rod (10), one end of the cross rod (10) is provided with a welding point (11), the outer part of the insulating cylinder (8) is provided with an insulating paint (12), the outer surface of the insulating paint (12) is provided with a color code mark (13).

2. An internally wired resistor as claimed in claim 1, characterised in that: The insulating rod (1) is provided as a porcelain rod, the insulating cylinder (8) is provided as an insulating resin paint, and the outer winding (9) is provided in the middle part of the insulating paint (12).

3. An internally wired resistor as defined in claim 1, wherein: The inner cavity of the iron cap (4) is provided with a groove matched with the resistance winding (3), the resistance winding (3) is arranged in the groove, and the surface of the iron cap (4) is provided with an anti-skid groove.

4. An internally wired resistor as defined in claim 1, wherein: The diameter of the insulating cylinder (8) is the same as the diameter of the iron cap (4), the insulating cylinder (8) is arranged between the two sealing rings (5), and the material of the insulating cylinder (8) is the same as that of the insulating paint (12).

5. An internally wired resistor as defined in claim 1, wherein: The cross rod (10) is located on one side of the iron cap (4), and the welding point (11) is fixedly connected with the iron cap (4).

6. An internally wired resistor as defined in claim 1, wherein: The two ends of the insulating paint (12) are sleeved on the outer part of the iron cap (4), the outer sides of the two ends of the insulating paint (12) are provided with chamfers, and the two ends of the insulating paint (12) are located in the middle part of the groove (6).

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