Heat dissipation resistor with aluminum shell

Abstract

The heat dissipation resistor with the aluminum shell comprises the aluminum shell body and a resistor main body, the aluminum shell body is composed of an annular shell body and a supporting plate, the supporting plate is located at the bottom of the annular shell body, a water absorption plate is arranged on the inner surface of the annular shell body in a welding mode, and the resistor main body is arranged at the bottom of the water absorption plate. The two ends of the resistor body are provided with leads, the other ends of the leads are connected with the lead connecting parts, the two ends of the water absorption plate are provided with extension plates, the bottoms of the extension plates are installed at the two ends of the annular shell in a welded mode, the two ends of the annular shell are provided with waterproof baffles, and the centers of the bottoms of the waterproof baffles are provided with baffle protruding parts. The resistor main body is placed in the water absorption plate and the waterproof baffle plate, when the resistor main body is in a humid environment, water vapor can be prevented from entering the surface of the resistor main body, and a small part of water vapor can be absorbed by the water absorption plate after entering the annular shell, so that the water vapor is prevented from reaching the surface of the resistor main body, and the resistor main body is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of resistors, in particular to an aluminum shell heat dissipation resistor. Background Art

[0002] Resistors are generally called resistors in daily life. They are a kind of current limiting element. In the circuit, its main function is to stabilize and regulate the current and voltage in the circuit, and it is used as a shunt, voltage divider and load that consumes electric energy. Common resistors are divided into wire wound resistors, carbon film resistors, metal film resistors, metal shell resistors and thermistors. Aluminum shell resistors are a kind of metal resistor.

[0003] However, the aluminum shell of the aluminum shell heat dissipation resistor in the prior art does not take into account the influence of water vapor on the resistor. When the resistor is in a humid environment, the intrusion of water vapor will cause certain damage to the resistor. Utility Model Content

[0004] The utility model aims to provide an aluminum housing heat dissipation resistor to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an aluminum shell heat dissipation resistor, comprising an aluminum shell body and a resistor body, the aluminum shell body is composed of an annular shell and a support plate, the support plate is located at the bottom of the annular shell, and a plurality of mounting ports are arranged at the top two ends of the support plate, a water absorption plate is arranged on the inner surface of the annular shell by welding, the resistor body is arranged at the bottom of the water absorption plate, leads are arranged at both ends of the resistor body, the other end of the lead is connected to the lead connection part, extension plates are arranged at both ends of the water absorption plate, the bottom of the extension plate is installed on the two ends of the annular shell by welding, waterproof baffles are arranged at both ends of the annular shell, a baffle protrusion is arranged at the bottom center of the waterproof baffle, the diameter of the baffle protrusion is smaller than the diameter of the waterproof baffle, the bottom of the baffle protrusion is connected to the resistor body, and the bottom of the waterproof baffle is connected to the end face of the annular shell.

[0006] Preferably, a plurality of heat dissipation fins are provided on the surface of the annular shell.

[0007] Preferably, a baffle protrusion is provided below the extension plate, and the diameters of the extension plate and the baffle protrusion match the outer diameter of the annular shell.

[0008] Preferably, the waterproof baffle is fixed to the extension plate by a plurality of fastening bolts, and the diameter of the waterproof baffle matches the outer diameter of the annular shell.

[0009] Preferably, a through hole is provided at the center of the surface of the waterproof baffle and the baffle protrusion, a lead is provided at the through hole, and a sealing ring is provided inside the through hole.

[0010] Preferably, a waterproof colloid is provided between the waterproof baffle and the extension plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model discloses an aluminum shell heat dissipation resistor, wherein a water absorption plate is arranged inside the annular shell, and waterproof baffles are arranged at both ends of the annular shell, so that the resistor body is placed inside the water absorption plate and the waterproof baffle. When in a humid environment, the waterproof baffle can block water vapor from reaching the surface of the resistor body. After a small amount of water vapor reaches the inside of the annular shell, it can be absorbed by the water absorption plate, thereby blocking the water vapor from reaching the surface of the resistor body, thereby protecting the resistor body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is an overall cross-sectional view of the utility model.

[0015] In the figure: 1. Aluminum shell; 101. Ring shell; 102. Heat dissipation fins; 103. Support plate; 104. Mounting port; 2. Lead wires; 3. Lead wire connection portion; 4. Waterproof baffle; 5. Fastening bolts; 6. Resistor body; 7. Extension plate; 8. Water absorption plate; 9. Baffle protrusion. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] See also Figure 1-2 The utility model provides a technical solution: an aluminum shell heat dissipation resistor, comprising an aluminum shell body 1 and a resistor body 6. The aluminum shell body 1 is composed of an annular shell 101 and a support plate 103. The support plate 103 is located at the bottom of the annular shell 101. A plurality of mounting ports 104 are arranged at both ends of the top of the support plate 103. A water absorption plate 8 is arranged on the inner surface of the annular shell 101 by welding. The resistor body 6 is arranged at the bottom of the water absorption plate 8. Lead wires 2 are arranged at both ends of the resistor body 6. The other end of the lead wire 2 is connected to the lead connection part 3. Extension plates 7 are arranged at both ends of the water absorption plate 8. The bottom of the extension plate 7 is installed at both ends of the annular shell 101 by welding. Waterproof baffles 4 are arranged at both ends of the annular shell 101. A baffle protrusion 9 is arranged at the bottom center of the waterproof baffle 4. The diameter of the baffle protrusion 9 is smaller than the diameter of the waterproof baffle 4. The bottom of the baffle protrusion 9 is connected to the resistor body 6. The bottom of the waterproof baffle 4 is connected to the end surface of the annular shell 101.

[0020] Furthermore, a plurality of heat dissipation fins 102 are disposed on the surface of the annular housing 101 .

[0021] Furthermore, below the extension plate 7 is a baffle protrusion 9 , and the diameters of the extension plate 7 and the baffle protrusion 9 match the outer diameter of the annular housing 101 .

[0022] Furthermore, the waterproof baffle plate 4 is fixed to the extension plate 7 by a plurality of fastening bolts 5 , and the diameter of the waterproof baffle plate 4 matches the outer diameter of the annular housing 101 .

[0023] Furthermore, a through hole is provided at the center of the surface of the waterproof baffle 4 and the baffle protrusion 9, a lead 2 is provided at the through hole, and a sealing ring is provided inside the through hole. The sealing ring can fill the gap between the through hole and the lead 2 to prevent water vapor from entering the resistor body 6 from here.

[0024] Furthermore, a waterproof colloid is provided between the waterproof baffle 4 and the extension plate 7 , which can fill the gap between the waterproof baffle 4 and the extension plate 7 to a certain extent, and can also absorb the water vapor reaching there, thereby protecting the internal resistor body 6 .

[0025] Specifically, the utility model places the resistor body 6 into the water absorption plate 8 and the waterproof baffle 4. When in a humid environment, the waterproof baffle 4 can block the water vapor from reaching the surface of the resistor body 6. After a small amount of water vapor reaches the inside of the annular shell 101, it can be absorbed by the water absorption plate 8, thereby preventing the water vapor from reaching the surface of the resistor body 6, thereby protecting the resistor body.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aluminum shell heat dissipation resistor, comprising an aluminum shell body (1) and a resistor body (6), characterized in that: The aluminum shell (1) is composed of an annular shell (101) and a support plate (103), wherein the support plate (103) is located at the bottom of the annular shell (101), and a plurality of mounting openings (104) are arranged at both ends of the top of the support plate (103). A water absorption plate (8) is arranged on the inner surface of the annular shell (101) by welding, and a resistor body (6) is arranged at the bottom of the water absorption plate (8). Lead wires (2) are arranged at both ends of the resistor body (6), and the other end of the lead wire (2) is connected to a lead wire connection portion (3). Extension plates (7) are provided at both ends of the water absorption plate (8), and the bottom of the extension plate (7) is installed at both ends of the annular shell (101) by welding. Waterproof baffles (4) are provided at both ends of the annular shell (101), and a baffle protrusion (9) is provided at the bottom center of the waterproof baffle (4). The diameter of the baffle protrusion (9) is smaller than the diameter of the waterproof baffle (4), and the bottom of the baffle protrusion (9) is connected to the resistor body (6), and the bottom of the waterproof baffle (4) is connected to the end face of the annular shell (101).

2. The aluminum housing heat dissipation resistor according to claim 1, characterized in that: A plurality of heat dissipation fins (102) are arranged on the surface of the annular housing (101).

3. The aluminum housing heat dissipation resistor according to claim 1, characterized in that: Below the extension plate (7) is a baffle protrusion (9), and the diameters of the extension plate (7) and the baffle protrusion (9) match the outer diameter of the annular shell (101).

4. The aluminum housing heat dissipation resistor according to claim 1, characterized in that: The waterproof baffle (4) is fixedly mounted on the extension plate (7) by means of a plurality of fastening bolts (5), and the diameter of the waterproof baffle (4) matches the outer diameter of the annular housing (101).

5. The aluminum housing heat dissipation resistor according to claim 1, characterized in that: A through hole is arranged at the center of the surface of the waterproof baffle (4) and the baffle protrusion (9), a lead wire (2) is arranged at the through hole, and a sealing ring is arranged inside the through hole.

6. The aluminum housing heat dissipation resistor according to claim 1, characterized in that: A waterproof colloid is provided between the waterproof baffle (4) and the extension plate (7).

Images