High-temperature-resistant winding resistor device
By employing a ceramic winding drum, an insulating shell, and heat dissipation fins in the wire-wound resistor device, combined with insulating thermally conductive adhesive and heat dissipation holes, the problems of loose resistance wire and poor heat dissipation under high temperature conditions are solved, achieving efficient heat dissipation and stability of the resistor.
Patent Information
- Application Number
- CN202520327125.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing wire-wound resistors are prone to loosening and deformation of the resistance wire due to thermal expansion in high-temperature environments, which affects the accuracy and stability of the resistor and causes poor heat dissipation, thus deteriorating the performance.
It adopts a ceramic winding drum, an insulating shell and heat dissipation fin structure, combined with insulating thermally conductive adhesive and heat dissipation hole design to achieve efficient heat transfer and dissipation, and is fixed by screws and nuts to improve stability.
This effectively prevents the resistance wire from loosening or deforming due to high-temperature expansion, maintaining the accuracy and stability of the resistor, while also improving heat dissipation efficiency and ensuring the safety and reliability of the resistor device.
Smart Images
Figure CN223638175U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a wire-wound resistance technical field especially relates to a high temperature resistance wire-wound resistance device. BACKGROUND
[0002] Wire-wound resistor is a current limiting element, which is widely used in daily life. After connecting the wire-wound resistor in the circuit, it can limit the current size of the branch connected through it. Wire-wound resistor is one of the most widely used elements in electronic circuits.
[0003] At present, the existing resistance device will produce stress due to thermal expansion when running at high temperature for a long time, resulting in resistance wire loosening and deformation, and further changing the resistance value, reducing the precision and stability of the resistance. In addition, the heat generated by the wire-wound resistance is difficult to dissipate effectively in high temperature environment, which further aggravates the deterioration of resistance performance. UTILITY MODEL CONTENT
[0004] The utility model discloses a high temperature resistance wire-wound resistance device to solve the problem that the existing wire-wound resistance is easy to produce safety hidden danger.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A high temperature resistance wire-wound resistance device, comprising a ceramic winding drum, both ends of the ceramic winding drum are fixedly connected with pin caps, the outer wall of the circumference of the ceramic winding drum is wound with resistance wire, a pin is arranged between the ceramic winding drum and the pin cap, the outer side of the resistance wire is sleeved with an insulating shell, a plurality of heat dissipation fins are clamped on the outer wall of the circumference of the insulating shell, a plurality of heat dissipation holes are arranged on the circumference of the insulating shell, and an insulating heat conducting glue is arranged between the insulating shell and the ceramic winding drum.
[0007] Further, both ends of the outer wall of the circumference of the insulating shell are clamped with mounting rings.
[0008] Further, a plurality of mounting plates are welded on the outer wall of the circumference of the mounting ring, and a mounting hole is arranged on one side of the mounting plate.
[0009] Further, a screw is screwedly inserted into the mounting hole, and a nut is screwedly sleeved with the other end of the screw.
[0010] The utility model has the advantages of:
[0011] 1. The heat generated by the resistance wire is efficiently transmitted to the insulating shell through the insulating heat-conducting glue, and then the heat is dissipated to the air through the heat dissipation fins, so that the resistance wire is rapidly cooled, and the heat of the resistance wire is dissipated from the heat dissipation holes, so that the resistance wire is better cooled, and the resistance device is prevented from expanding due to high temperature and generating stress, so that the resistance wire is prevented from loosening and deforming, so as to avoid reducing the precision and stability of the resistance.
[0012] 2. The wire-wound resistance device is fixed and installed through the screw and the nut, and the operation is simple, convenient and fast. BRIEF DESCRIPTION OF DRAWINGS
[0013] Fig. 1 is a sectional view of the high-temperature-resistant wire-wound resistance device according to the present application;
[0014] Fig. 2 is a sectional view of the high-temperature-resistant wire-wound resistance device according to the present application;
[0015] Fig. 3 is a sectional view of the high-temperature-resistant wire-wound resistance device according to the present application.
[0016] In the figure: 1, ceramic winding drum; 2, pin cap; 3, resistance wire; 4, pin; 5, insulating shell; 6, insulating heat-conducting glue; 7, heat dissipation hole; 8, heat dissipation fin; 9, mounting ring; 10, mounting plate; 11, nut; 12, screw; 13, mounting hole. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.
[0018] REFERENCE Figs. 1-3The utility model provides a high temperature resistant type wirewound resistance device, including ceramic winding cylinder 1, the both ends of ceramic winding cylinder 1 are integrally formed with pin cap 2, and the circumference outer wall of ceramic winding cylinder 1 is wound with resistance wire 3, and the plug pin 4 is arranged between ceramic winding cylinder 1 and pin cap 2, and the outside of resistance wire 3 is sleeved with insulating shell 5, and the circumference outer wall of insulating shell 5 is clamped with a plurality of radiating fins 8, and the circumference of insulating shell 5 is equipped with a plurality of heat dissipation holes 7, and the heat of resistance wire 3 is dissipated from heat dissipation hole 7, thereby better heat dissipation and cooling of resistance wire 3, and the insulating heat conducting glue 6 is arranged between insulating shell 5 and ceramic winding cylinder 1, the insulating heat conducting glue 6 not only has good heat conducting and heat dissipation function, but also can play the insulating effect in electronic equipment, protects the circuit from the risk of electric shock and short circuit, and the heat generated by resistance wire 3 is efficiently transferred to insulating shell 5 through insulating heat conducting glue 6, and then the heat is dissipated to the air through radiating fin 8, thereby high-speed heat dissipation and cooling of resistance wire 3.
[0019] The both ends of the circumference outer wall of insulating shell 5 are clamped with mounting ring 9, the circumference outer wall of mounting ring 9 is welded with a plurality of mounting plates 10, one side of mounting plate 10 is equipped with mounting hole 13, screw 12 is screwed in mounting hole 13, and the other end of screw 12 is screwed with nut 11, and the wirewound resistance device is fixed and installed through screw 12 and nut 11.
[0020] The working principle of the embodiment is as follows: in use, first, the wirewound resistance device is fixed and installed through screw 12 and nut 11, then the heat generated by resistance wire 3 is efficiently transferred to insulating shell 5 through insulating heat conducting glue 6, and then the heat is dissipated to the air through radiating fin 8, thereby high-speed heat dissipation and cooling of resistance wire 3, and at the same time, the heat of resistance wire 3 is dissipated from heat dissipation hole 7, thereby better heat dissipation and cooling of resistance wire 3.
[0021] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.
Claims
1. A high-temperature-resistant wire-wound resistor device comprising a ceramic bobbin (1), characterized in that, Both ends of the ceramic bobbin (1) are fixedly connected with pin caps (2), the outer wall of the circumference of the ceramic bobbin (1) is wound with resistance wires (3), the ceramic bobbin (1) and the pin caps (2) are provided with insertion pins (4), the outer side of the resistance wires (3) is sleeved with insulating shells (5), the outer wall of the circumference of the insulating shells (5) is clamped with a plurality of heat dissipation fins (8), the circumference of the insulating shells (5) is provided with a plurality of heat dissipation holes (7), and the insulating shells (5) and the ceramic bobbin (1) are provided with insulating heat-conducting glue (6).
2. A high temperature resistant wirewound resistor device as claimed in claim 1, wherein, Both ends of the outer wall of the circumference of the insulating shell (5) are clamped with mounting rings (9).
3. A high temperature resistant wirewound resistor device as claimed in claim 2, wherein, The outer wall of the circumference of the mounting ring (9) is welded with a plurality of mounting plates (10), and one side of the mounting plate (10) is provided with a mounting hole (13).
4. A high temperature resistant wirewound resistor device as claimed in claim 3, wherein The mounting hole (13) is screwed with a screw (12), and the other end of the screw (12) is screwed with a nut (11).