Flat structure aluminum shell resistor

Abstract

The utility model relates to a kind of flat structure aluminum shell resistor, including mica sheet winding framework, conducting connecting piece, resistance alloy wire, ceramic shell, aluminum shell and insulating component, resistance alloy wire is wound in mica sheet winding framework, conducting connecting piece is fixed in mica sheet winding framework;Conducting connecting piece is two, resistance alloy wire one end welds the one end of one conducting connecting piece;Ceramic shell and aluminum shell are buckled, form cavity inside, mica sheet winding framework is located in cavity, insulating component is installed between mica sheet winding framework and aluminum shell.Compared with prior art, the utility model has the advantages that insulating component is installed between mica sheet winding framework and aluminum shell, improves resistance protection strength and insulation capacity, ceramic shell is installed as the contact plane of mica sheet winding bone, ensures resistance insulation performance;The resistance core body of heat generation conducts heat to ceramic shell, ceramic shell carries out heat dissipation, shortens heat conduction path etc.

Description

Technical Field

[0001] This utility model relates to resistors, and more particularly to a flat-structure aluminum-cased resistor. Background Technology

[0002] In electrical drive control equipment, drive control systems typically utilize control modules such as frequency converters and servo drives. During the stopping process, the drive module generates regenerative energy due to inertia. To prevent this regenerative energy from flowing back into the electrical circuit, energy-dissipating devices are used to dissipate this energy. Resistors, as energy-dissipating devices, absorb and dissipate this regenerative energy. Electrical equipment systems usually have numerous energy storage devices. When the equipment stops, to prevent the energy stored in these devices from flowing back into the system circuit, resistors are used to dissipate the residual energy in these devices, protecting the safety of other electronic components in the system circuit.

[0003] A search revealed that patent announcement number CN219958667U discloses an aluminum-cased resistor structure, specifically comprising an aluminum casing, a resistor core disposed within the aluminum casing, a protective partition between the resistor core and the aluminum casing, and a filler between the protective partition and the resistor core. One end of the aluminum casing has a first pin and a second pin, which are connected to the resistor core. However, this prior art has poor heat dissipation performance.

[0004] In summary, designing a resistor with good heat dissipation performance is a technical problem that needs to be solved. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology, which has poor heat dissipation performance, and to provide a flat aluminum shell resistor.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] According to one aspect of this utility model, a flat-structure aluminum-cased resistor is provided, comprising a mica sheet winding frame, conductive connecting pieces, a resistance alloy wire, a ceramic shell, an aluminum shell, and an insulating component. The resistance alloy wire is wound on the mica sheet winding frame, and the conductive connecting pieces are fixed inside the mica sheet winding frame. There are two conductive connecting pieces, with one end of one conductive connecting piece welded to one end of the resistance alloy wire. The ceramic shell and the aluminum shell are fastened together, forming an internal cavity. The mica sheet winding frame is located inside the cavity, and an insulating component is installed between the mica sheet winding frame and the aluminum shell.

[0008] As a preferred technical solution, the resistor also includes a wire, which is riveted to the other end of the conductive connecting piece.

[0009] As a preferred technical solution, the other end of the conductive connecting piece is provided with a fixing piece, which is bent and covers the outer surface of the wire.

[0010] As a preferred technical solution, one end of the ceramic shell is provided with a wire outlet, and the wire extends from the wire outlet to the outside of the ceramic shell.

[0011] As a preferred technical solution, the mica sheet winding skeleton includes two stacked mica sheets, and the conductive connecting piece is located between the two stacked mica sheets.

[0012] As a preferred technical solution, one of the conductive connecting pieces is longer and the other is shorter, extending to one end of the aluminum shell.

[0013] As a preferred technical solution, the mica sheet winding skeleton and the conductive connecting piece are connected by rivets.

[0014] As a preferred technical solution, the insulating component includes an insulating filler layer and an insulating sheet, wherein the insulating filler layer is close to the ceramic shell and the insulating sheet is close to the aluminum shell.

[0015] As a preferred technical solution, the mica sheet winding skeleton is strip-shaped with protrusions at both ends, and the resistance alloy wire is wound between the two protrusions; the protrusions are provided with connecting holes, and the conductive connecting piece is connected to the mica sheet winding skeleton through the connecting holes.

[0016] As a preferred technical solution, the ceramic shell has a protrusion inside, and the protrusion of the mica sheet winding skeleton is engaged with one side of the protrusion.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1) The present invention installs an insulating component between the mica sheet winding skeleton and the aluminum shell to improve the resistance protection strength and insulation capability. The ceramic shell serves as the mounting contact plane of the mica sheet winding skeleton to ensure the resistance insulation performance. The heated resistor core conducts heat to the ceramic shell, which dissipates heat and shortens the heat conduction path.

[0019] 2) The conductive connecting piece of this utility model is located between two mica sheets of the mica sheet winding skeleton. The mica sheet winding skeleton fixes the relative position of the conductive connecting piece, and the resistance alloy wire is welded to one end of the conductive connecting piece. The electronic alloy wire is fixed and connected firmly, and is not easy to affect the performance or cause damage due to loosening.

[0020] 3) This utility model uses wires to lead out the resistance alloy wire, which can be easily matched with various electrical interfaces; the fixing piece of the conductive connecting piece can protect the connection, greatly reducing the risk of breakage and improving the reliability of the resistor. The protrusion of the mica sheet winding skeleton is engaged on one side of the protrusion, which is convenient for positioning and simplifies installation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a flat aluminum shell resistor according to the present invention;

[0022] Figure 2 This is an exploded view of a flat-structure aluminum shell resistor according to this utility model;

[0023] Figure 3 This is a schematic diagram of the mica sheet winding frame, conductive connecting piece and resistance alloy wire installation structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the ceramic shell structure of this utility model;

[0025] The numbers in the diagram are as follows:

[0026] 1. Mica sheet winding frame; 10. Protrusion; 11. Connecting hole; 2. Conductive connecting piece; 20. Fixing piece; 3. Rivet; 4. Resistance alloy wire; 5. Conductor; 6. Ceramic shell; 60. Conductor outlet; 61. Protrusion; 7. Insulating filling layer; 8. Insulating sheet; 9. Aluminum shell. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.

[0028] like Figure 1 and Figure 2 As shown, this utility model provides a flat aluminum shell resistor, including a mica sheet winding frame 1, a conductive connecting piece 2, a rivet 3, a resistance alloy wire 4, a wire 5, a ceramic shell 6, an insulating component, and an aluminum shell 9.

[0029] The mica sheet winding frame 1 comprises two mica sheets stacked together. A resistance alloy wire 4 is wound around the mica sheet winding frame 1. Two conductive connecting pieces 2 are provided, one longer and the other shorter, welded to the two ends of the resistance alloy wire 4 respectively. The two mica sheets clamp the conductive connecting piece 2. The mica sheet winding frame 1 and the mica sheets are strip-shaped, with protrusions 10 at both ends. The resistance alloy wire 4 is wound between the protrusions 10 at both ends. Connecting holes 11 are provided on the protrusions 10 and the conductive connecting piece 2. Rivets 3 pass through the protrusions 10 and the connecting holes 11 on the conductive connecting piece 2 to connect the conductive connecting piece 2 to the mica sheet winding.

[0030] The conductive connecting piece 2 extends to one end of the mica sheet and is provided with a fixing piece 20. The fixing piece 20 is bent into a cylindrical shape. Two wires 5 are respectively inserted into the fixing pieces 20 of the two conductive connecting pieces 2 and soldered to the fixing pieces. The lead-out form of the wires 5 can match various electrical interfaces. According to the user's reserved electrical interface, the corresponding electrical connection terminal is matched; at the same time, the impact of the resistor's heat generation on the user's reserved electrical interface is reduced.

[0031] like Figure 4 As shown, the ceramic shell 6 has a cavity inside, and a protrusion 61 is provided inside the cavity for positioning the mica sheet winding frame 1. One side of the ceramic shell 6 has a wire lead-out outlet 60. The aluminum shell 9 has a cavity inside and is fastened above the ceramic shell 6. The bottom surface of the ceramic shell 6 serves as a mounting plane, ensuring the insulation and thermal conductivity of the resistor. Fixing the resistor to a heat sink or metal surface increases thermal conductivity / dissipation, thereby reducing the surface temperature of the resistor during operation. The aluminum shell 9 encloses the resistor core. The aluminum shell 9 itself has good heat dissipation capabilities and high protective performance, improving the resistor's protection strength.

[0032] like Figure 3 As shown, a mica sheet winding skeleton 1 with a resistance alloy wire 4 is connected to a conductive connecting piece 2 and a wire 5 to form a resistor core. They are placed together in the cavity formed by the ceramic shell 6 and the aluminum shell 9. The wire 5 extends from the wire outlet 60 to the outside of the ceramic shell 6. The protrusion 10 of the mica sheet winding skeleton 1 is engaged on one side of the protrusion 61.

[0033] The insulation assembly is located between the mica sheet winding frame 1 and the ceramic shell 6 and aluminum shell 9. The insulation assembly includes an insulating filler layer 7 and an insulating sheet 8. The insulating filler layer 7 is close to the ceramic shell 6, and the insulating sheet 8 is close to the aluminum shell 9. The insulation assembly ensures the protection of the resistor core, which is enclosed, thus improving the protection strength of the resistor.

[0034] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A flat-structure aluminum-cased resistor, characterized in that, The device includes a mica sheet winding frame (1), conductive connecting pieces (2), resistance alloy wire (4), ceramic shell (6), aluminum shell (9), and insulating components. The resistance alloy wire (4) is wound on the mica sheet winding frame (1), and the conductive connecting pieces (2) are fixed inside the mica sheet winding frame (1). There are two conductive connecting pieces (2), and one end of the resistance alloy wire (4) is welded to one end of the conductive connecting piece (2). The ceramic shell (6) and the aluminum shell (9) are fastened together to form a cavity inside. The mica sheet winding frame (1) is located inside the cavity, and an insulating component is installed between the mica sheet winding frame (1) and the aluminum shell (9).

2. A flat-structure aluminum-cased resistor according to claim 1, characterized in that, The resistor also includes a wire (5) which is riveted to the other end of the conductive connecting piece (2).

3. A flat-structure aluminum-cased resistor according to claim 2, characterized in that, The conductive connecting piece (2) has a fixing piece (20) at the other end, and the fixing piece (20) is bent and covers the outer surface of the wire (5).

4. A flat-structure aluminum-cased resistor according to claim 2, characterized in that, The ceramic shell (6) is provided with a wire outlet (60) at one end, and the wire (5) extends from the wire outlet (60) to the outside of the ceramic shell (6).

5. A flat-structure aluminum-cased resistor according to claim 1, characterized in that, The mica sheet winding frame (1) comprises two stacked mica sheets, and the conductive connecting piece (2) is located between the two stacked mica sheets.

6. A flat-structure aluminum-cased resistor according to claim 1, characterized in that, One of the conductive connecting pieces (2) is longer and the other is shorter, extending to one end of the aluminum shell (9).

7. A flat-structure aluminum-cased resistor according to claim 1, characterized in that, The mica sheet winding frame (1) and the conductive connecting piece (2) are connected by rivets (3).

8. A flat-structure aluminum-cased resistor according to claim 1, characterized in that, The insulating component includes an insulating filler layer (7) and an insulating sheet (8), the insulating filler layer (7) being close to the ceramic shell (6) and the insulating sheet (8) being close to the aluminum shell (9).

9. A flat-structure aluminum-cased resistor according to claim 1, characterized in that, The mica sheet winding skeleton (1) is strip-shaped with protrusions (10) at both ends. The resistance alloy wire (4) is wound between the protrusions (10) at both ends. The protrusions (10) are provided with connecting holes (11). The conductive connecting piece (2) is connected to the mica sheet winding skeleton (1) through the connecting holes (11).

10. A flat-structure aluminum-cased resistor according to claim 9, characterized in that, The ceramic shell (6) has a protrusion (61) inside, and the protrusion (10) of the mica sheet winding skeleton (1) is engaged on one side of the protrusion (61).

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