Wire-wound resistor with aluminum shell

Abstract

The utility model discloses a wire-wound resistor with an aluminum shell, which relates to the technical field of wire-wound resistors and comprises a resistor core component, a wire-wound resistor core component, a wire-wound resistor core component, a wire-wound resistor core component and a wire-wound resistor core component, the aluminum shell is connected to the resistor core component in a sealed and sleeved mode, bearing plates are fixed to the bottoms of the left end and the right end of the aluminum shell, a wire clamping plate is fixed to the middle of the upper side of the end, away from the aluminum shell, of each bearing plate, a groove is formed in the upper side of each wire clamping plate, sealing gaskets are fixed to the front inner wall and the rear inner wall of each groove, and a protective cover is connected to the bearing plates in a clamped mode. And the protective cover is sleeved on the wiring terminal. According to the utility model, the bearing plate, the wire clamping plate and the protective cover are arranged at the two ends of the aluminum shell, after the wire is connected with the wiring terminal, the wire is clamped between the two sealing gaskets on the wire clamping plate, and then the protective cover is sleeved on the wire clamping plate, so that the wiring terminal is shielded and protected, the wiring terminal is effectively prevented from rusting due to damp or dust falling and dust collection, and the safety and the stability are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of wire-wound resistor technology, specifically to a wire-wound resistor with an aluminum housing. Background Technology

[0002] Wire-wound resistors are resistors made by winding constantan, manganin, or nickel-chromium alloy wire onto a ceramic frame, with a protective varnish or glass enamel coating on the surface. Wire-wound resistors are characterized by a small temperature coefficient and high precision. Aluminum-cased wire-wound resistors consist of an aluminum casing and a resistor core. The resistor core uses an insulated, high-temperature resistant ceramic rod as the resistor frame, uniformly wound with high-quality alloy wire. The aluminum casing is fitted onto the resistor core and encapsulated using a highly insulating, non-flammable electronic paste or silicon-copper molding process, ensuring a tight bond between the aluminum casing and the resistor core into a solid and stable entity, unaffected by external air, vibration, and dust, exhibiting high stability and thermal conductivity.

[0003] Currently, when aluminum-cased wire-wound resistors are in use, the terminals (2) at the end of the resistor core component (1) are connected to the wires by welding or threading. Regardless of the connection method, the terminals are often directly exposed, resulting in poor safety protection performance. Extensive exposure can easily lead to moisture, rust, or dust accumulation, affecting safety and stability. Utility Model Content

[0004] The purpose of this invention is to provide an aluminum-cased wire-wound resistor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an aluminum-cased wire-wound resistor, comprising:

[0006] A resistor core component, wherein both ends of the resistor core component are provided with terminals;

[0007] An aluminum shell is sealed and fitted onto the resistor core component. A bearing plate is fixed to the bottom of both ends of the aluminum shell. A wire clamping plate is fixed to the upper middle part of the bearing plate away from the aluminum shell. A groove is opened on the upper side of the wire clamping plate. Sealing gaskets are fixed to the front and rear inner walls of the groove. A protective cover is snapped onto the bearing plate and fitted onto the terminal block.

[0008] Preferably, the protective cover is open on the side near the aluminum shell, and the protective cover away from the aluminum shell has a receiving opening that matches the shape of the wire clamping plate. The wire clamping plate is inserted into the receiving opening to achieve a seal.

[0009] Preferably, the bottom of both the front and rear sides of the protective cover is fixed with a side strip, which is integrally formed with the protective cover. The left and right sides of the side strip are provided with a buckle groove. The bearing plate is fixed with a buckle block at the position corresponding to the buckle groove. The buckle block engages with the buckle groove, which is simple to connect and easy to disassemble.

[0010] Preferably, the aluminum shell has protruding strips fixed on both the front and rear sides, and the outer wall of the protruding strips abuts against the inner wall of the protective cover, thereby improving the sealing between the protective cover and the aluminum shell.

[0011] Preferably, the sealing gasket is made of insulating silicone, which has good flexibility and good dust and water resistance.

[0012] Preferably, the bottom of both the front and rear sides of the aluminum shell is fixed with side plates, and the side plates are provided with multiple through holes.

[0013] Preferably, the side plate and the aluminum shell are made of anodized aluminum material in one piece, and the outer side of the aluminum shell adopts a trapezoidal groove design, which increases the heat dissipation area and has a good heat dissipation effect.

[0014] Preferably, the bearing plate and the clamping plate are integrally processed, which is simple to manufacture.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. By setting a bearing plate, a wire clamping plate and a protective cover at both ends of the aluminum shell, after the wire is connected to the terminal, the wire is clamped between the two sealing gaskets on the wire clamping plate, and then the protective cover is put on, thereby shielding and protecting the terminal, effectively preventing moisture and rust or dust accumulation, and greatly improving safety and stability.

[0017] 2. The protective cover is snapped into the support plate, making the connection simple and quick, and also easy to disassemble. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the present invention after the protective cover has been removed;

[0021] Figure 3 This is a schematic diagram of the support plate structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the protective cover structure of this utility model;

[0023] Figure 5 This utility model Figure 4 Another perspective diagram.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Resistor core component; 2. Terminal block; 3. Aluminum shell; 4. Support plate; 5. Wire clamping plate; 6. Groove; 7. Sealing gasket; 8. Protective cover; 9. Receiving port; 10. Side strip; 11. Clip groove; 12. Clip block; 13. Raised strip; 14. Side plate; 15. Through hole. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figures 1 to 5 The aluminum-cased wire-wound resistor shown includes:

[0028] The resistor core component 1 has terminals 2 at both ends;

[0029] An aluminum shell 3 is sealed and fitted onto the resistor core component 1. A bearing plate 4 is fixed to the bottom of both ends of the aluminum shell 3. A wire clamping plate 5 is fixed to the upper middle part of the end of the bearing plate 4 away from the aluminum shell 3. The bearing plate 4 and the wire clamping plate 5 are integrally processed and simple to manufacture. A groove 6 is opened on the upper side of the wire clamping plate 5. A sealing gasket 7 is fixed to the front and rear inner walls of the groove 6. A protective cover 8 is snapped onto the bearing plate 4. The protective cover 8 is fitted onto the terminal 2.

[0030] The protective cover 8 is open on the side closest to the aluminum shell 3, and the protective cover 8 is provided with a receiving opening 9 that matches the shape of the clamping plate 5 on the side away from the aluminum shell 3. The clamping plate 5 is inserted into the receiving opening 9 to achieve a seal. The front and rear sides of the aluminum shell 3 are fixed with protrusions 13. The outer wall of the protrusions 13 abuts against the inner wall of the protective cover 8, which improves the sealing between the protective cover 8 and the aluminum shell 3.

[0031] The bottom of the front and rear sides of the protective cover 8 is fixed with side strips 10. The side strips 10 and the protective cover 8 are integrally formed. The left and right sides of the side strips 10 are provided with buckle grooves 11. The bearing plate 4 is fixed with buckle blocks 12 at the corresponding positions of the buckle grooves 11. The buckle blocks 12 are engaged with the buckle grooves 11, which is simple to connect and easy to disassemble.

[0032] The sealing gasket 7 is made of insulating silicone, which is flexible and has good dust and water resistance.

[0033] Side plates 14 are fixed to the bottom of both the front and rear sides of the aluminum shell 3. Multiple through holes 15 are provided on the side plates 14. The side plates 14 and the aluminum shell 3 are made of anodized aluminum material in one piece. The outer side of the aluminum shell 3 adopts a trapezoidal groove design, which increases the heat dissipation area and has a good heat dissipation effect.

[0034] In this utility model, the protective covers 8 at both ends of the aluminum shell 3 are first removed. After the wires are connected to the terminals 2, the wires are clamped between the two sealing gaskets 7 on the clamping plate 5. The two sealing gaskets 7 squeeze and seal the wires. Then, the protective cover 8 is put on. The edge strip 10 at the bottom of the protective cover 8 is engaged with the buckle block 12 on the bearing plate 4 to realize the installation of the protective cover 8. It is quick and convenient. The protective cover 8 shields and protects the terminals 2, effectively preventing moisture and rust or dust accumulation, greatly improving safety and stability. When the protective cover 8 is installed, the receiving opening 9 on the protective cover 8 is fitted onto the clamping plate 5. The inner wall of the protective cover 8 near the aluminum shell 3 abuts against the protrusion 13 at the end of the aluminum shell 3, effectively improving the sealing line after the protective cover 8 is installed.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An aluminum case wirewound resistor characterized by, Include: Resistance core components (1), both ends of the resistance core components (1) are provided with terminal (2); Aluminum shell (3), the aluminum shell (3) is sealed on the resistance core component (1), the bottom of the left and right ends of the aluminum shell (3) is fixed with the bearing plate (4), the upper side of the end of the bearing plate (4) away from the aluminum shell (3) is fixed with the wire clamping plate (5), the upper side of the wire clamping plate (5) is provided with recess (6), the front and rear inner walls of the recess (6) are fixed with sealing gasket (7), the bearing plate (4) is clamped with protective cover (8), the protective cover (8) is provided on the terminal (2).

2. An aluminum case wirewound resistor according to claim 1, characterized in that: The side of the protective cover (8) close to the aluminum shell (3) is open, and the side of the protective cover (8) away from the aluminum shell (3) is provided with accommodating port (9) matched with the shape of the wire clamping plate (5).

3. An aluminum case wirewound resistor according to claim 1, wherein: The bottom of the front and rear sides of the protective cover (8) is fixed with the edge strip (10), the edge strip (10) and the protective cover (8) are integrally processed, the left and right sides of the edge strip (10) are provided with buckle groove (11), the bearing plate (4) is fixed with buckle block (12) corresponding to the position of the buckle groove (11), and the buckle block (12) and the buckle groove (11) are clamped.

4. An aluminum case wirewound resistor according to claim 1, wherein: The front and rear sides of the aluminum shell (3) are fixed with convex strip (13), and the outer side wall of the convex strip (13) abuts against the inner wall of the protective cover (8).

5. An aluminum case wirewound resistor according to claim 1, wherein: The sealing gasket (7) is made of insulating silica gel.

6. An aluminum case wirewound resistor according to claim 1, wherein: The bottom of the front and rear sides of the aluminum shell (3) is fixed with the edge plate (14), and a plurality of through holes (15) are formed in the edge plate (14).

7. An aluminium case wirewound resistor according to claim 6, characterised in that: The edge plate (14) and the aluminum shell (3) are integrally processed by anodized aluminum material, and the outer side of the aluminum shell (3) is designed as a trapezoidal concave-convex groove.

8. An aluminum case wirewound resistor according to claim 1, wherein: The bearing plate (4) and the wire clamping plate (5) are integrally processed.

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