CN215577993U

CN215577993U - Winding combined resistor

Info

Publication number: CN215577993U
Application number: CN202122181236.8U
Authority: CN
Inventors: 唐宗飘; 林光萍; 陈维招; 张军; 张周春; 张全利; 张敏
Original assignee: Zhejiang Qisheng Electronics Co ltd
Current assignee: Zhejiang Qisheng Electronics Co ltd
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-01-18
Anticipated expiration: 2031-09-09

Abstract

The utility model discloses a winding combined resistor, which comprises a resistor rod, a resistor disc wound on the resistor rod and an insulating layer coated outside the resistor rod, wherein iron caps are arranged at two ends of the resistor rod, supporting legs I are arranged on the iron caps, welding points at two ends of the resistor disc are positioned on the iron caps, an adjusting ring sleeve capable of sliding along the axial direction of the resistor rod is sleeved outside the insulating layer, supporting legs II are arranged on the adjusting ring sleeve, the outer diameter of the adjusting ring sleeve is smaller than that of the iron caps, a strip-shaped resistance adjusting window is arranged on the insulating layer and used for exposing the wound ring-shaped resistor disc to form a plurality of spaced resistance adjusting blocks in the axial direction of the resistor rod, and a concave cavity, a spring positioned in the concave cavity and a steel ball connected to the spring are arranged on the inner wall of the adjusting ring sleeve. The two-terminal iron cap is used for mounting the chip, and the two pins I are used for wiring or inserting into jacks of a circuit board.

Description

Winding combined resistor

Technical Field

The utility model relates to the technical field of resistors, in particular to a winding combined resistor.

Background

The winding resistor is made by winding nickel-chromium wire, manganese copper wire and constantan wire on a resistor rod, and the resistor rod is made of ceramic, plastic, metal coated with an insulating layer and other materials and is in various shapes such as a tube shape, a flat shape and the like. The winding resistor has the characteristics of high resistance precision, high power, low working noise, stability, reliability, high temperature resistance and the like. Most of the existing winding resistors have the following structure: resistance wires are wound on the resistance rods, and pins are led out from the left side and the right side of the resistance rods. And the resistance of above-mentioned structure can only adopt the mode installation of pegging graft, has seted up the jack promptly on the circuit board, and two pins of resistance are followed the jack respectively and are inserted, and after the circuit board passed through wave-soldering, soldering tin can weld the pin in jack department, cuts the pin through cutting the foot machine again. The resistance value of the resistor is fixed and cannot be adjusted

In recent years, a resistor manufacturer designs a patch type winding resistor, and the structure of the winding resistor is as follows: and iron caps are additionally arranged on two sides of the resistance rod, the resistance wire is wound on the resistance rod, and two ends of the resistance wire are welded on the iron caps.

The two resistors are independent, and a combined resistor with the functions of a patch and a pin or a wiring function is not provided, so that the circuit board is suitable for the requirements of two circuit boards.

Disclosure of Invention

The utility model overcomes the defects of the prior art, provides the winding combined resistor, and has two using functions of a patch and a pin or a wire.

In order to achieve the purpose, the utility model provides the following technical scheme: a winding combined resistor comprises a resistor rod, a resistor disc wound on the resistor rod and an insulating layer coated outside the resistor rod, wherein iron caps are arranged at two ends of the resistor rod, supporting legs I are arranged on the iron caps, welding points at two ends of the resistor disc are positioned on the iron caps, an adjusting ring sleeve capable of sliding along the axial direction of the resistor rod is sheathed outside the insulating layer, supporting legs II are arranged on the adjusting ring sleeve, the outer diameter of the adjusting ring sleeve is smaller than that of the iron caps, a strip-shaped resistor adjusting window is arranged on the insulating layer, the resistance adjusting device comprises a resistance rod, a plurality of adjusting ring sleeves, springs and steel balls, wherein the resistance rod is wound on the resistance rod, the adjusting ring sleeves are provided with cavities, springs and steel balls, the springs are located in the cavities, the steel balls are connected to the springs, the insulating sheets are arranged on two sides of the steel balls, the width of each insulating sheet is approximately the same as that of one adjusting ring sleeve, the steel balls abut against the exposed adjusting ring sleeve of the resistance rod through the springs, and the two insulating sheets are correspondingly located on two sides of the adjusting ring sleeve.

Preferably, the adjusting ring sleeve is formed by bending a sheet metal strip, one end of the bent metal strip is bent outwards to form the support leg II, the other end of the bent metal strip is bent outwards to form the pressing sheet, the pressing sheet is arranged opposite to the support leg II and is provided with a screw in a penetrating mode, the screw can enable the support leg II and the pressing sheet to be close to each other, and the inner diameter of the adjusting ring sleeve is reduced.

Preferably, the metal strip is embossed to form the cavity.

Preferably, the iron cap has the welding section that sets up with the resistance stick is integrative and is located the paster section in the welding section outside, and the external diameter of welding section is less than the paster section, and the solder joint is located the welding section, and stabilizer blade I is located the paster section.

The utility model has the beneficial effects that:

1. the two-terminal iron cap is used for mounting the chip, and the two pins I are used for wiring or inserting into jacks of a circuit board.

2. The resistance is adjustable, and the stabilizer blade I wiring of arbitrary one end, stabilizer blade II wiring, the adjusting ring cover can slide simultaneously for the steel ball switches back and forth on different resistance adjusting block, adjusts the resistance size.

3. The steel ball can elastically abut against the resistance adjusting block under the action of the spring, so that sliding abrasion is avoided.

4. The insulating pieces on the two sides of the steel ball can effectively insulate the resistance adjusting blocks on the two sides, and errors caused by influences are avoided.

5. The external diameter of welding section is less than the paster piece, and paster section paster, welding section and circuit board have the clearance, and the solder joint is difficult to be touched, and the security is high.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a view of FIG. 1 with the insulating layer and insulating collar removed;

FIG. 3 is a schematic diagram of an adjustment collar according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view of FIG. 3;

fig. 5 is a schematic structural diagram of an iron cap according to an embodiment of the present invention.

In the figure: the resistance rod comprises a resistance rod 1, a resistance sheet 2, an insulating layer 3, an iron cap 4, a support leg I41, a welding spot 21, an adjusting ring sleeve 5, a support leg II 51, a resistance adjusting window 31, a resistance adjusting block 22, a concave cavity 52, a spring 53, a steel ball 54, an insulating sheet 55, a pressing sheet 56, a welding section 42 and a patch section 43, wherein the outer diameter of the welding section 42 is smaller than that of the patch section 43, the welding spot 21 is located on the welding section 42, and the support leg I41 is located on the patch section 43.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-5, a winding combined resistor includes a resistor rod 1, a resistor disc 2 wound on the resistor rod 1, and an insulating layer 3 covering the resistor rod 1, where the insulating layer 3 may be an insulating paint directly coated on the resistor rod 1, or may be formed and then sleeved, a winding slot is opened on a side surface of the resistor rod 1, the resistor disc 2 is surrounded in the winding slot, iron caps 4 are provided at two ends of the resistor rod 1, legs I41 are provided on the iron caps 4, welding points 21 at two ends of the resistor disc 2 are located on the iron caps 4, an adjusting ring 5 capable of sliding along an axial direction of the resistor rod 1 is provided outside the insulating layer 3, legs II 51 are provided on the adjusting ring 5, and are made of metal materials such as iron, copper, aluminum, etc., an outer diameter of the adjusting ring 5 is smaller than an outer diameter of the iron caps 4, a strip-shaped resistance adjusting window 31 is opened on the insulating layer 3 for exposing the wound resistor disc 2 in a ring shape, the resistance adjusting device comprises a plurality of spaced resistance adjusting blocks 22 formed on the resistance rod 1 in the axial direction, a resistance value can be arranged on one side of an insulating layer 3, a concave cavity 52, a spring 53 positioned in the concave cavity 52 and steel balls 54 connected to the spring 53 are arranged on the inner wall of an adjusting ring sleeve 5, insulating sheets 55 are arranged on two sides of each steel ball 54, the width of each two insulating sheets 55 is approximately the same as that of a group of resistance adjusting blocks 22, the steel balls 54 abut against the exposed resistance adjusting blocks 22 of the resistance plate 2 through the springs 53, and the two insulating sheets 55 are correspondingly positioned on two sides of the group adjusting blocks 22.

Specifically, the adjusting ring sleeve 5 is formed by bending a sheet metal strip, one end of the bent metal strip is bent outwards to form the supporting leg II 51, the other end of the bent metal strip is bent outwards to form the pressing piece 56, the pressing piece 56 is shorter than the supporting leg II 51, the pressing piece 56 is opposite to and parallel to the supporting leg II 51, and a screw 57, which can also be a screw rod or a bolt, is inserted through the pressing piece 56, so that the supporting leg II 51 and the pressing piece 56 can be close to each other by the screw 57, and the inner diameter of the adjusting ring sleeve 5 is reduced.

Specifically, the metal strip is bulged outwardly to form the cavity 52.

Specifically, the iron cap 4 has a welding section 42 integrally provided with the resistance rod 1 and a patch section 43 located outside the welding section 42, the outer diameter of the welding section 42 is smaller than that of the patch section 43, the welding point 21 is located on the welding section 42, and the support leg I41 is located on the patch section 43.

The two-purpose socket has two use functions of chip mounting and wiring, the iron caps 4 at two ends are used for chip mounting, and the two pins I41 are used for wiring or inserting into jacks of a circuit board.

When in surface mounting, the surface mounting sections 43 of the iron caps 4 at the two ends are subjected to surface mounting, and because the outer diameter of the welding section 42 is smaller than that of the surface mounting sections 43, a gap exists between the welding section 42 and the circuit board, the welding spot 21 is not easy to touch, and the safety is high;

during wiring, the supporting leg I41 at any end is connected, the supporting leg II 51 is connected, the screw 57 is unscrewed, the supporting leg II 51 is far away from the pressing sheet 56, the inner diameter of the adjusting ring sleeve 5 is enlarged, the adjusting ring sleeve can slide on the resistance rod 1, the steel ball 54 can be switched back and forth on different resistance adjusting blocks 22, the resistance value is adjusted, the steel ball 54 can elastically abut against the resistance adjusting blocks 22 under the action of the spring 53, sliding abrasion is avoided, the insulation sheets 55 on two sides of the steel ball 54 can effectively insulate the resistance adjusting blocks 22 on two sides, errors caused by influence are avoided, after the determination, the screw 57 is screwed, the supporting leg II 51 is close to the pressing sheet 56, and the inner diameter of the adjusting ring sleeve 5 is reduced and fastened on the outer insulating layer 3.

Claims

1. A winding combined resistor comprises a resistor rod, a resistor disc wound on the resistor rod and an insulating layer coated outside the resistor rod, wherein iron caps are arranged at two ends of the resistor rod, supporting legs I are arranged on the iron caps, and welding points at two ends of the resistor disc are positioned on the iron caps, the winding combined resistor is characterized in that an adjusting ring sleeve capable of sliding along the axial direction of the resistor rod is sleeved outside the insulating layer, supporting legs II are arranged on the adjusting ring sleeve, the outer diameter of the adjusting ring sleeve is smaller than that of the iron caps, a strip-shaped resistance adjusting window is arranged on the insulating layer and used for exposing the ring-shaped resistor disc to form a plurality of spaced resistance adjusting blocks in the axial direction of the resistor rod, the winding combined resistor also comprises a concave cavity on the inner wall of the adjusting ring sleeve, a spring positioned in the concave cavity and steel balls connected on the spring, insulating sheets are arranged on two sides of the steel balls, the width of the two insulating sheets is approximately the same as that of the group of adjusting blocks, and the steel balls abut against the exposed resistance adjusting blocks of the resistor disc through the spring, the two insulation sheets are correspondingly positioned on two sides of the group adjusting block.

2. A wound combined resistor according to claim 1, wherein the adjusting ring is formed by bending a sheet-like metal strip, the bent metal strip is bent to form the leg II with one end bent outward and a pressing piece bent outward with the other end, the pressing piece is disposed opposite to the leg II and is provided with a screw, and the screw can make the leg II and the pressing piece approach each other to reduce the inner diameter of the adjusting ring.

3. A wound combined resistor according to claim 2, wherein the recess is formed by pressing an outward bulge of the strip.

4. A winding combined resistor according to claim 1, 2 or 3, wherein the iron cap has a welding section provided integrally with the resistor rod and a tab section provided outside the welding section, the welding section has an outer diameter smaller than that of the tab section, the welding point is provided on the welding section, and the leg I is provided on the tab section.