An embedded high strength resistor

Abstract

The application relates to the technical field of resistors, in particular to an embedded high-strength resistor which comprises two insulating support plates arranged side by side and multiple resistor sheets arranged side by side between the two support plates. The two sides of the resistor sheets are curled to form elastic open lead curl edges, the lead curl edges elastically clamp conductive rods as terminals, the conductive rods penetrate the lead curl edges along the length direction and are locked after penetrating the corresponding support plates at both ends; the resistor sheets are stamped and formed with multiple arch bridge protrusions along the length direction, heat dissipation holes are formed at the positions corresponding to the arch bridge protrusions, and the two adjacent arch bridge protrusions are staggered towards the two side walls of the resistor sheets; the two sides of the resistor sheets are provided with insulating positioning plates, the positioning plates penetrate the multiple arch bridge protrusions at the corresponding side and are locked after penetrating the corresponding support plates at both ends. The conductive rods as terminals are elastically clamped by the lead curl edges, the contact area is large, and the current transmission is stable. The corresponding resistor sheets can be pulled out without overall disassembly, replacement is convenient, and the flexibility is high.

Description

Technical Field

[0001] This invention relates to the field of resistor technology, and more specifically to an embedded high-strength resistor. Background Technology

[0002] Traditional stainless steel plate resistors use resistor plates that are CNC machined and stamped, with stainless steel clamps securing both ends. These are connected in series via stainless steel conductive rings, ceramic rings, and a fixing screw, with a mica tube on the fixing screw providing insulation. The disadvantages of this structure are: 1. Poor clamping force of the stainless steel clamps, leading to easy detachment and voltage withstand insulation issues; 2. Poor vibration resistance, with the mica tube easily damaged, resulting in voltage breakdown; 3. Electrochemical corrosion easily occurs between the stainless steel conductive rings and the stainless steel plate in salt spray environments. Furthermore, resistors with this structure are prone to failure and have a short service life in demanding environmental applications, such as offshore wind power and port machinery, where prolonged use in harsh environments poses a risk of failure.

[0003] Later, a stainless steel chip resistor was disclosed in Chinese patent document CN201829277U, which includes multiple resistor chips connected in series by a stainless steel conductive ring and a ceramic ring. The stainless steel conductive ring has a boss, and each resistor chip is located on the boss. The multiple resistor chips are fastened together by mica clamps. This stainless steel chip resistor, by providing a boss on the stainless steel conductive ring, ensures that the resistor chips rest precisely on it, preventing the resistor chips from shifting and cutting the mica tube under vibration, thereby improving mechanical strength and vibration resistance.

[0004] The inventors discovered that the electrical connection points at both ends of the existing resistor rely on openings to contact the boss, resulting in a small and unstable contact area. Furthermore, when some resistors overheat and burn out, the entire resistor needs to be disassembled for maintenance. Summary of the Invention

[0005] In view of the above-mentioned technical problems in the prior art, the present invention provides an embedded high-strength resistor.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An embedded high-strength resistor is provided, comprising two insulated, parallel-arranged support plates and multiple resistor sheets arranged in parallel between the two support plates. The opposing sides of the resistor sheets are rolled to form elastically open lead wire ferrules, which elastically clamp conductive rods serving as terminals. The conductive rods pass through the lead wire ferrules along their length and are locked after passing through the corresponding support plates at both ends. The resistor sheets are stamped with multiple arched protrusions along their length, and heat dissipation holes are formed at the corresponding arched protrusions. Adjacent arched protrusions are staggered towards the two side walls of the resistor sheets. Insulated positioning plates are provided on both sides of the resistor sheets. The positioning plates pass through each arched protrusion on the corresponding side and are locked after passing through the corresponding support plates at both ends.

[0008] As a further alternative, two support plates abut against the two ends of the resistor sheet, and the two ends of the resistor sheet are bent laterally to form support feet, which abut against the side walls of the support plates.

[0009] As a further alternative, the resistor sheet has two support feet at both ends, and the two support feet extend in opposite directions to both sides.

[0010] As a further alternative, the end of the conductive rod is provided with a threaded section, and a nut is fitted onto the threaded section, thereby pressing the support plate against the end of the resistor sheet.

[0011] As a further alternative, a limiting piece is detachably fixed to the outside of the support plate, and the limiting piece presses against the top of multiple positioning plates.

[0012] As a further alternative, the thickness of the resistor sheet is 3mm to 8mm.

[0013] As a further optional option, the positioning plate and / or support plate can be made of mica.

[0014] As a further alternative, the resistor element can be made of stainless steel.

[0015] As a further alternative, the positioning plate is cuboid in shape, and the support plate has multiple rectangular holes through which the positioning plate passes.

[0016] As a further optional solution, the sides of the positioning plate are coated with a thermally conductive layer.

[0017] The beneficial effects of this invention are:

[0018] This invention discloses an embedded high-strength resistor. Compared with existing technologies, the resistor sheet has rolled edges on both sides to form lead wire curls. The conductive rod, serving as a terminal, is elastically clamped by the lead wire curls, resulting in a large contact area and stable current transmission. When some resistor sheets malfunction, the corresponding resistor sheet can be removed by releasing the locking of the corresponding conductive rod and positioning plate, without requiring overall disassembly. This makes replacement convenient and highly flexible. The conductive rod, serving as a terminal, also provides support. Furthermore, the heat dissipation holes and arched protrusions formed by stamping on the resistor sheet provide excellent heat dissipation. The arched protrusions are held in place by the positioning plate, and the entire resistor sheet is completely locked, resulting in high overall strength. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an embedded high-strength resistor in one of the embodiments.

[0020] Figure 2 This is a perspective view of a single resistor sheet in the embodiment.

[0021] Figure label:

[0022] Support plate 1;

[0023] 2. Resistor piece; 21. Lead wire crimp; 22. Arch bridge protrusion; 23. Heat dissipation hole; 24. Support foot;

[0024] 3. Conductive rod; 4. Positioning plate; 5. Limiting piece. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] This embodiment provides an embedded high-strength resistor, such as... Figure 1 and Figure 2As shown, the device includes two insulating support plates 1 arranged side-by-side vertically and multiple resistor sheets 2 arranged side-by-side horizontally between the two support plates 1. The resistor sheets 2 are rolled along their opposite sides to form elastically open lead wire flanges 21. The lead wire flanges 21 elastically clamp conductive rods 3, which serve as terminals. The conductive rods 3 pass through the lead wire flanges 21 along their length and are locked after passing through the corresponding support plates 1 at both ends. Multiple arched protrusions 22 are stamped along the length of the resistor sheet 2. The arched protrusions 22 arch upwards from the thickness direction of the resistor sheet 2, and heat dissipation holes 23 are formed at the corresponding arched protrusions 22. Two adjacent arched protrusions 22 are staggered towards the side walls of the resistor sheet 2 along its thickness direction. For example, from top to bottom, the first arches to the left, the second to the right, the third to the left, and so on. Insulating positioning plates 4 are provided on both sides of the resistor sheet 2 along its thickness direction. The positioning plates 4 pass through each arched protrusion 22 on the corresponding side, and are locked after passing through the corresponding support plates 1 at both ends.

[0027] Compared with existing technologies, the two sides of the resistor piece 2 are rolled up to form lead wire rolled edges 21. The conductive rod 3, which serves as a terminal, is elastically clamped by the lead wire rolled edges 21, resulting in a large contact area and stable current transmission. When some resistor pieces 2 malfunction, the corresponding resistor piece 2 can be removed by releasing the locking of the corresponding conductive rod 3 and positioning plate 4, without the need for complete disassembly. This makes replacement convenient and highly flexible. The conductive rod 3 also serves as a support, acting as a terminal. Furthermore, the heat dissipation holes 23 and arch bridge protrusions 22 formed by stamping on the resistor piece 2 provide good heat dissipation. The arch bridge protrusions 22 are held in place by the positioning plate 4, and the entire resistor piece 2 is completely locked in place, resulting in high overall strength.

[0028] In this embodiment, two support plates 1 respectively abut against the two ends of the resistor sheet 2. The two ends of the resistor sheet 2 are bent laterally to form support feet 24, which abut against the sidewalls of the support plates 1. Each end of the resistor sheet 2 is provided with two support feet 24, and the two support feet 24 extend in opposite directions to both sides, so that the upper and lower ends of the resistor sheet 2 are more stably positioned relative to the support plates 1.

[0029] The conductive rod 3 is locked in the following way: the end of the conductive rod 3 is provided with a threaded section, and a nut (not shown in the figure) is fitted on the threaded section, thereby pressing the support plate 1 against the end of the resistor piece 2.

[0030] The support plate 1 is locked in such a way that a limiting piece 5 is detachably fixed to the outside of the support plate 1, and the limiting piece 5 presses down on the top of multiple positioning plates 4.

[0031] In this embodiment, since the resistor sheet 2 needs to be arranged side by side between the two support plates 1 to avoid being bent by the top and bottom, the resistor sheet 2 needs to be thicker to meet certain hardness requirements. The thickness of the resistor sheet 2 is preferably 3mm to 8mm.

[0032] In this embodiment, the positioning plate 4 and / or the support plate 1 are mica plates. The resistor sheet 2 is a stainless steel sheet.

[0033] In this embodiment, the positioning plate 4 is cuboid in shape, and the support plate 1 has multiple rectangular holes through which the positioning plate 4 passes, resulting in a large contact area. In practice, it can be modified so that the side of the positioning plate 4 is an arc surface that fits against the arch protrusion 22.

[0034] In practice, a heat-conducting layer can be coated on the side of the positioning plate 4 to improve the heat conduction and heat dissipation effect.

[0035] In the description of this invention, it is obvious that the described embodiments are merely a part of the embodiments of the invention, and not all of them. The components of the embodiments of the invention described and illustrated herein can generally be arranged and designed in various different configurations.

[0036] Therefore, the above detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] In the description of this invention, it should be noted that the terms "middle," "upper," "lower," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

Claims

1. An embedded high-strength resistor, characterized in that: The system includes two insulated, parallel support plates (1) and multiple resistor plates (2) arranged in parallel between the two support plates (1). The resistor plates (2) have their opposing sides curled to form elastically open lead wire curls (21). The lead wire curls (21) elastically clamp the conductive rods (3) that serve as terminals. The conductive rods (3) pass through the lead wire curls (21) along their length and are locked after passing through the corresponding support plates (1) at both ends. The resistor plates (2) are stamped with multiple arched protrusions (22) along their length. The corresponding arched protrusions (22) A heat dissipation hole (23) is formed at 22), and two adjacent arch bridge protrusions (22) are staggered toward the two side walls of the resistor sheet (2); the resistor sheet (2) is provided with insulating positioning plates (4) on both sides, the positioning plates (4) pass through each arch bridge protrusion (22) on the corresponding side and their two ends pass through the corresponding support plates (1) and are locked; the two support plates (1) respectively abut against the two ends of the resistor sheet (2), and the two ends of the resistor sheet (2) are bent laterally to form support feet (24), and the support feet (24) abut against the side walls of the support plates (1).

2. An embedded high-strength resistor according to claim 1, characterized in that: The resistor (2) has two support feet (24) at both ends, and the two support feet (24) extend in opposite directions to both sides.

3. An embedded high-strength resistor according to claim 1, characterized in that: The end of the conductive rod (3) is provided with a threaded section, and a nut is fitted on the threaded section, thereby pressing the support plate (1) against the end of the resistor (2).

4. An embedded high-strength resistor according to claim 1, characterized in that: A limiting piece (5) is detachably fixed to the outside of the support plate (1), and the limiting piece (5) presses against the top of multiple positioning plates (4).

5. An embedded high-strength resistor according to claim 1, characterized in that: The thickness of the resistor (2) is 3mm~8mm.

6. An embedded high-strength resistor according to claim 1, characterized in that: The positioning plate (4) and / or the support plate (1) are mica plates.

7. An embedded high-strength resistor according to claim 1, characterized in that: The resistor (2) is a stainless steel sheet.

8. An embedded high-strength resistor according to claim 1, characterized in that: The positioning plate (4) is rectangular, and the support plate (1) has multiple rectangular holes through which the positioning plate (4) passes.

9. An embedded high-strength resistor according to claim 8, characterized in that: The side of the positioning plate (4) is coated with a heat-conducting layer.

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