Impact-resistant belt type aluminum shell resistor

Abstract

The utility model relates to the technical field of resistors, in particular to an impact-resistant belt-type aluminum shell resistor, which comprises an aluminum shell, an insulating separation sheet and a resistor core, a cavity is arranged in the aluminum shell, the resistor core is positioned in the cavity, and the insulating separation sheet is arranged between the aluminum shell and the resistor core. The resistor core comprises a flat resistor tape and a plurality of groups of supporting assemblies, the resistor tape is in a continuous circuitous bending shape, so that a plurality of parallel tape bodies are formed, and two ends of the resistor tape are connected with leading-out terminals penetrating out of the aluminum shell. The supporting assembly comprises a plurality of sets of insulated positioning plates which are arranged in the length direction of the tape body at intervals, each set of positioning plates is arranged in the arrangement direction of the multiple sections of tape bodies, each set of positioning plates is provided with a plurality of arranged positioning grooves, and the multiple sections of tape bodies of the resistance tape are embedded in the multiple positioning grooves. Compared with the prior art, the resistance tape is relatively flat, occupies a small space and can be plugged into a relatively flat aluminum shell. Different from a resistance wire, the resistance tape with a large cross section is adopted, so that higher energy impact can be borne.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of resistance, specifically relates to a kind of impact-resistant type belt type aluminum shell resistance. BACKGROUND

[0002] Aluminum shell resistor is a resistor, shell is made of aluminum alloy, surface has heat dissipation groove Small power, high temperature resistance, strong overload capacity. The advantages of aluminum shell resistor are good heat dissipation performance, and the disadvantages are relatively high price.

[0003] The Chinese patent document with announcement number CN209103885U discloses a non-inductive aluminum shell resistor, which comprises an aluminum shell, a mica sheet and a resistance core. The aluminum shell has a cavity inside, and the resistance core is located in the cavity. The mica sheet is arranged between the aluminum shell and the resistance core. The resistance core includes a first ceramic body resistor, a second ceramic body resistor and a copper wire arranged inside the first and second ceramic body resistors. The first and second ceramic body resistors are parallelly located in the cavity and filled with quartz sand. One end of the two copper wires is connected, and the other end extends to the outside of the aluminum shell through a cotton-covered wire. The two ends of the cavity are sealed with sealing material. The resistance core uses non-inductive ceramic resistor, which not only realizes the non-induction of aluminum shell resistor, but also has the characteristics of power type, realizing the non-induction characteristics of aluminum shell resistor, and effectively ensuring the use of aluminum shell resistor in high-frequency circuit.

[0004] At present, there are various types of aluminum shell resistors on the market. For aluminum shell resistors using sheet resistors, the positioning of the resistor core is prone to looseness. Currently, domestic wind power industry companies have great demand for high protection, impact-resistant small resistance resistors. SUMMARY

[0005] In view of all or part of the above technical problems existing in the prior art, the utility model provides an impact-resistant type belt type aluminum shell resistance.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] An impact-resistant type belt type aluminum shell resistance is provided, which comprises an aluminum shell, an insulating separation sheet and a resistance core. The aluminum shell has a cavity inside, and the resistance core is located in the cavity. The insulating separation sheet is arranged between the aluminum shell and the resistance core. The resistance core comprises a flat resistance belt and a plurality of support assemblies. The resistance belt is continuously and tortuously curved, forming a plurality of parallel belt bodies. The curved parts on the same side of the resistance belt are aligned with each other. The two ends of the resistance belt are connected to lead-out terminals that extend out of the aluminum shell.

[0008] The resistance core comprises a flat resistance belt and a plurality of support assemblies. The resistance belt is continuously and tortuously curved, forming a plurality of parallel belt bodies. The curved parts on the same side of the resistance belt are aligned with each other. The two ends of the resistance belt are connected to lead-out terminals that extend out of the aluminum shell.

[0009] The support assembly comprises a plurality of groups of insulating positioning plates arranged along the length direction of the band body, each group of positioning plates is arranged along the arrangement direction of the plurality of band bodies, each group of positioning plates is provided with a plurality of positioning grooves arranged respectively, and the plurality of band bodies of the electric resistance band are embedded in the plurality of positioning grooves.

[0010] As a further optional solution, each group of positioning plates comprises an upper plate body and a lower plate body, the plurality of positioning grooves of the upper plate body clamps the upper part of the plurality of band bodies, and the plurality of positioning grooves of the lower plate body clamps the lower part of the plurality of band bodies.

[0011] As a further optional solution, a locking assembly is arranged between the upper plate body and the lower plate body, the locking assembly comprises a locking bolt and a locking nut, and the locking bolt is screwed with the locking nut after penetrating through the upper plate body and the lower plate body.

[0012] As a further optional solution, the support assembly further comprises a guide screw and a limiting nut screwed on the guide screw, the guide screw is arranged along the length direction of the band body, the guide screw penetrates through the plurality of groups of positioning plates, and the plurality of groups of positioning plates are fixed by being tightly pressed by the limiting nut after being displaced to the preset position along the guide screw.

[0013] As a further optional solution, the positioning plate is a porcelain piece, and the insulating partition piece is a mica piece.

[0014] As a further optional solution, the aluminum shell is in the shape of a flat quadrilateral, the periphery and one end of the aluminum shell are closed, and the other end is open for embedding the insulating partition piece and the electric resistance core, and the open side of the aluminum shell is provided with a sealing plate.

[0015] As a further optional solution, the aluminum shell comprises a shell body and a heat dissipation fin arranged outside the shell body.

[0016] As a further optional solution, the shell body and the heat dissipation fin are in an integrated structure.

[0017] As a further optional solution, the heat dissipation fin comprises straight fins and L-shaped bent fins, the bent fins are arranged in pairs and face each other, and the bent fins are arranged on the top and the side of the shell body.

[0018] As a further optional solution, the bottom of the aluminum shell is provided with a supporting lug.

[0019] The utility model discloses a beneficial effect:

[0020] Compared with the prior art, the utility model discloses a kind of impact-resistant band type aluminum shell resistance, with following advantages:

[0021] 1) the resistance band is relatively flat, small space is occupied, and can be inserted into relatively flat aluminum shell.

[0022] 2) unlike resistance wire, using electric resistance band with large cross section, can withstand higher energy impact.

[0023] 3) Its frame adopts a positioning plate with positioning groove, which has good resistance band stability and strong heat dissipation performance. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an impact-resistant strip aluminum-cased resistor in one of the embodiments.

[0025] Figure 2 This is an exploded view of an impact-resistant ribbon aluminum-cased resistor in one of the embodiments.

[0026] Figure 3 This is a schematic diagram of the resistor core in the embodiment.

[0027] Figure 4 This is an exploded view of the resistor core in the embodiment.

[0028] Figure 5 This is a cross-sectional view of an impact-resistant strip aluminum-cased resistor in one of the embodiments.

[0029] Figure 6 for Figure 5 A magnified view of the circled area.

[0030] Figure label:

[0031] Aluminum shell 1, cavity 11, sealing plate 12, shell body 13, heat dissipation fins 14, straight fins 141, curved fins 142;

[0032] Insulating separator 2;

[0033] 3. Resistor core; 31. Resistor strip; 32. Strip body; 33. Lead-out terminal;

[0034] Support assembly 4, positioning plate 41, positioning groove 42, upper plate 43, lower plate 44;

[0035] Locking assembly 5, locking bolt 51, locking nut 52;

[0036] Guide screw 6, limit nut 7;

[0037] Support ear 8. Detailed Implementation

[0038] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0039] This embodiment provides an impact-resistant ribbon aluminum-cased resistor, such as... Figures 1 to 6As shown, it comprises an aluminum shell 1, an insulating partition sheet 2 and a resistance core 3, the aluminum shell 1 is provided with a cavity 11, the resistance core 3 is located in the cavity 11, and the insulating partition sheet 2 is arranged between the aluminum shell 1 and the resistance core 3, thereby separating the aluminum shell 1 and the resistance core 3.

[0040] The resistance core 3 comprises a flat resistance band 31 and a plurality of supporting assemblies 4, the resistance band 31 is continuously and tortuously curved, thereby forming a plurality of parallel band bodies 32, the curved positions of the resistance band 31 on the same side are aligned with each other, and the two ends of the resistance band 31 are connected with lead terminals 33 which are led out of the aluminum shell 1.

[0041] The supporting assembly comprises a plurality of insulating positioning plates 41 which are arranged along the length direction of the band body 32, each group of the positioning plates 41 is arranged along the arrangement direction of the plurality of band bodies 32, each group of the positioning plates 41 is respectively provided with a plurality of positioning grooves 42, and the plurality of band bodies 32 of the resistance band 31 are embedded in the plurality of positioning grooves 42.

[0042] Specifically, each group of the positioning plates 41 comprises an upper plate body 43 and a lower plate body 44, the plurality of positioning grooves 42 of the upper plate body 43 clamps the upper part of the plurality of band bodies 32, and the plurality of positioning grooves 42 of the lower plate body 44 clamps the lower part of the plurality of band bodies 32. The upper and lower tooth-shaped positioning plates 41 are fixed, the internal structure is very stable, and the vibration resistance is stronger.

[0043] Specifically, the locking assembly 5 is arranged between the upper plate body 43 and the lower plate body 44, and comprises a locking bolt 51 and a locking nut 52, the locking bolt 51 passes through the upper plate body 43 and the lower plate body 44 and is screwed with the locking nut 52, thereby making the upper plate body 43 and the lower plate body 44 jointly clamp each band body 32.

[0044] Specifically, the supporting assembly 4 further comprises a guide screw 6 and a limiting nut 7 which is screwed on the guide screw 6, the guide screw 6 is arranged along the length direction of the band body 32, the guide screw 6 passes through the plurality of positioning plates 41, and the plurality of positioning plates 41 are fixed by the limiting nut 7 after being displaced to the preset position along the guide screw 6.

[0045] Specifically, the positioning plate 41 is a porcelain piece, and the insulating partition sheet 2 is a mica piece.

[0046] Specifically, the aluminum shell 1 is in the shape of a flat quadrilateral, the periphery and one end thereof are closed, and the other end is open for embedding the insulating partition sheet 2 and the resistance core 3, and the open side of the aluminum shell 1 is provided with a sealing plate 12.

[0047] Specifically, the aluminum shell 1 comprises a shell body 13 and a heat dissipation fin 14 which is located outside the shell body 13.

[0048] Specifically, the shell body 13 and the heat dissipation fin 14 are integrated with each other.

[0049] Specifically, the heat dissipation fins 14 include straight fins 141 and L-shaped bent fins 142, and the bent fins 142 are arranged oppositely in pairs.

[0050] Specifically, the bottom of the aluminum shell 1 is provided with a supporting lug 8.

[0051] In the description of the present application, obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0052] Therefore, the above detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0053] In the description of the present application, it should be noted that the terms "middle", "upper", "lower", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0054] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected. It can be mechanically connected or electrically connected. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. An impact-resistant strip-type aluminum-cased resistor, comprising an aluminum casing (1), an insulating separator (2), and a resistor core (3), wherein the aluminum casing (1) has a cavity (11), the resistor core (3) is located within the cavity (11), and the insulating separator (2) is disposed between the aluminum casing (1) and the resistor core (3), characterized in that: resistance The core (3) includes a flat resistor strip (31) and multiple sets of support components (4). The resistor strip (31) is continuously tortuous and curved, thereby forming a multi-section strip body (32) in parallel. The curved parts on the same side of the resistor strip (31) are aligned with each other. The two ends of the resistor strip (31) are connected to lead-out terminals (33) that extend out of the aluminum shell (1). The support assembly includes multiple sets of insulating positioning plates (41) arranged separately along the length of the strip body (32). Each set of positioning plates (41) is arranged along the direction of the multiple strip body sections (32). Each set of positioning plates (41) has multiple positioning slots (42) arranged in a row. The multiple strip body sections (32) of the resistance strip (31) are embedded in the multiple positioning slots (42).

2. The impact-resistant ribbon aluminum-cased resistor according to claim 1, characterized in that: Each set of positioning plates (41) includes an upper plate (43) and a lower plate (44). Multiple positioning grooves (42) of the upper plate (43) clamp the upper part of the multi-section belt body (32), and multiple positioning grooves (42) of the lower plate (44) clamp the lower part of the multi-section belt body (32).

3. The impact-resistant strip-type aluminum-cased resistor according to claim 2, characterized in that: A locking assembly (5) is provided between the upper plate (43) and the lower plate (44), which includes a locking bolt (51) and a locking nut (52). The locking bolt (51) passes through the upper plate (43) and the lower plate (44) and then the locking nut (52) is screwed on.

4. The impact-resistant strip-type aluminum-cased resistor according to claim 1, characterized in that: The support assembly (4) also includes a guide screw (6) and a limiting nut (7) screwed outside the guide screw (6). The guide screw (6) is arranged along the length of the belt body (32). The guide screw (6) passes through multiple sets of positioning plates (41). After the multiple sets of positioning plates (41) are moved to the preset position along the guide screw (6), they are tightened and fixed by the limiting nut (7).

5. The impact-resistant strip-type aluminum-cased resistor according to claim 1, characterized in that: The positioning plate (41) is made of ceramic, and the insulating separator (2) is made of mica.

6. The impact-resistant strip-type aluminum-cased resistor according to claim 1, characterized in that: The aluminum shell (1) is a flat cuboid, closed on all sides and one end, while the other end is open for the insulating separator (2) and the resistor core (3) to be embedded. The open side of the aluminum shell (1) is provided with a sealing plate (12).

7. The impact-resistant strip-type aluminum-cased resistor according to claim 6, characterized in that: The aluminum shell (1) includes a shell body (13) and heat dissipation fins (14) located on the outside of the shell body (13).

8. The impact-resistant strip-type aluminum-cased resistor according to claim 7, characterized in that: The shell body (13) and the heat dissipation fins (14) are an integrated structure.

9. The impact-resistant strip-type aluminum-cased resistor according to claim 7, characterized in that: The heat dissipation fins (14) include straight fins (141) and L-shaped bent fins (142). The bent fins (142) are arranged in pairs facing each other, and the bent fins (142) are arranged on the top and side of the shell body (13).

10. The impact-resistant strip-type aluminum-cased resistor according to claim 1, characterized in that: The bottom of the aluminum shell (1) is provided with a support ear (8).

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