Load resistor device

Abstract

The utility model discloses a load resistor device. The load resistor device comprises an insulation support and a resistor rope. The insulating bracket comprises two panels which are arranged side by side at an interval; a plurality of rope penetrating holes through which the resistance rope can penetrate are formed in the panels; the resistance rope penetrates through the panel rope penetrating hole back and forth, the resistance rope comprises a heat-resisting main rope and a resistance wire, and the resistance wire is spirally wound on the heat-resisting main rope. When the load resistance box works, the resistance rope penetrates through the panel back and forth, heat is generated when the resistance rope works, the heat-resistant main rope is arranged to be of a main body structure, and the heat-resistant main rope can keep stable in size when the load resistance box works and is small in size change due to expansion caused by heat and contraction caused by cold by utilizing the heat-resistant performance of the heat-resistant main rope; after long-time use, good dimensional stability can be maintained, and short circuit between the resistance wires on the adjacent resistance ropes is avoided.

Description

Technical Field

[0001] This utility model relates to the field of resistor device technology, and more particularly to a load resistor device. Background Technology

[0002] Resistors are commonly used electronic devices in the field of electrical engineering. Depending on the design requirements, they can not only reduce voltage and limit current in circuits, but also play a role in braking or discharging electrical energy.

[0003] The resistor described in this invention is a high-power load resistor, playing a crucial role in circuits or equipment. Its primary function is to dissipate excess power. For example, when excess power is generated in equipment or circuits, the load resistor can be used to dissipate this power to prevent it from flowing into other components or equipment. A specific application is motor braking. High-power load resistors are also commonly used for power supply testing and hardware testing. For instance, a power supply device can be connected to a high-power load resistor, and the power dissipation by the load resistor can be used for parameter testing and aging tests. In hardware function testing, the load resistor is often used as a simulation product to test hardware functionality. In addition, high-power load resistors also serve as buffers and protect equipment.

[0004] In some high-power load resistor boxes, strip resistors are used to improve heat dissipation efficiency and are densely arranged in the resistor box. However, the strip resistors are prone to deformation due to long-term operation, which may cause short circuits. Utility Model Content

[0005] In order to solve the technical problem of resistance deformation in the load resistor in the prior art, one of the objectives of this utility model is to provide a load resistor device.

[0006] One of the objectives of this utility model is achieved through the following technical solution:

[0007] A load resistor device, the load resistor device comprising an insulating support and a resistance rope;

[0008] The insulating support includes two panels arranged side by side with a gap between them, and the panels are provided with a plurality of holes through which the resistance rope can pass;

[0009] The resistance rope passes back and forth through the rope hole in the panel. The resistance rope includes a heat-resistant main rope and a resistance wire, with the resistance wire spirally wound around the heat-resistant main rope.

[0010] Optionally, the heat-resistant main rope is a fiberglass rope.

[0011] Optionally, the array of rope holes is distributed on the panel.

[0012] Optionally, the rope holes are arranged in a rectangular array, which includes x rows and y columns;

[0013] The resistance ropes pass through the rope holes on the panel row by row, and the number of resistance ropes is z, where n×z=x, and n is an integer greater than zero.

[0014] Optionally, n is an even number and y is an odd number, with a single resistance wire passing through the n rows of wire-threading holes one by one.

[0015] Optionally, the two ends of the resistance rope are provided with conductive connectors.

[0016] Optionally, the first end of the conductive connector is provided with a conductive ring, and the other end of the conductive connector is provided with a crimping part for crimping the resistance rope.

[0017] Optionally, the insulating support further includes a plurality of pillars disposed between the two panels, with each end of the pillar connected to one of the two panels respectively.

[0018] Optionally, the panel is a mica board, a ceramic board, or a bakelite board.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] In this invention, the resistance rope comprises a heat-resistant main rope and resistance wires. The resistance wires are spirally wound around the heat-resistant main rope, thus forming the main structure with the resistance wires attached to it. An insulating bracket serves as the supporting structure for winding the resistance rope. When the load resistance box is operating, the resistance rope passes back and forth through the panel. During operation, the resistance rope generates heat. Because the heat-resistant main rope is the main structure, its heat resistance ensures dimensional stability during load resistance box operation, minimizing thermal expansion and contraction. This maintains good dimensional stability even after prolonged use, preventing short circuits between resistance wires on adjacent resistance ropes. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the load resistor device of this utility model;

[0022] Figure 2 This is an exploded view of the load resistor device of this utility model;

[0023] Figure 3 This is a schematic diagram of one embodiment of the resistance rope in the load resistor device of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the load resistor device of this utility model after the resistor rope is straightened;

[0025] Figure 5This is a side view of the load resistor device of this utility model;

[0026] Figure 6 for Figure 5 A magnified view of a local area A in the middle.

[0027] Explanation of reference numerals in the attached diagram:

[0028] 1. Insulating support; 11. Panel; 111. Rope hole; 12. Support column;

[0029] 2. Resistance rope; 21. Heat-resistant main rope; 22. Resistance wire; 23. Conductive connector; 231. Conductive ring; 232. Crimping part;

[0030] 3. Adjustment assembly; 31. Adjustment seat; 311. Adjustment hole; 32. Adjustment piece; 321. Through hole; 322. Spring groove; 33. Locking screw; 34. Spring. Detailed Implementation

[0031] The following will refer to the appendices in the embodiments of this application. Figure 1 To be continued Figure 6 The technical solutions in the embodiments of this application are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0033] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0034] like Figure 1-4As shown, this utility model provides a load resistor device, which includes an insulating support 1 and a resistance rope 2. The insulating support 1 includes two side-by-side panels 11 spaced apart, and each panel 11 has a plurality of threading holes 111 through which the resistance rope 2 can pass. The resistance rope 2 passes back and forth through the threading holes 111 of the panel 11. The resistance rope 2 includes a heat-resistant main rope 21 and a resistance wire 22, with the resistance wire 22 spirally wound on the heat-resistant main rope 21.

[0035] In this invention, the resistance rope 2 includes a heat-resistant main rope 21 and a resistance wire 22. The resistance wire 22 is spirally wound around the heat-resistant main rope 21, thus the heat-resistant main rope 21 forms the main structure, and the resistance wire 22 is attached to it. Simultaneously, an insulating bracket 1 serves as the supporting structure for winding the resistance rope 2. When the load resistance box is operating, the resistance rope 2 passes back and forth through the panel 11. During operation, the resistance rope 2 generates heat. Because the heat-resistant main rope 21 is the main structure, its heat resistance allows it to maintain dimensional stability during load resistance box operation, with minimal dimensional changes due to thermal expansion and contraction. Furthermore, it maintains good dimensional stability after prolonged use, is not easily stretched, and prevents short circuits between the resistance wires 22 on adjacent resistance ropes 2.

[0036] In this invention, the heat-resistant main rope 21 specifically refers to a rope that can meet the required strength and maintain good dimensional stability at a high temperature of 200°C. The heat-resistant main rope 21 is made of glass fiber or aramid fiber. Of course, the heat-resistant main rope 21 can also be other ropes with good heat resistance.

[0037] The resistance wire 22 is spirally wound onto the heat-resistant main rope 21, specifically including single-spiral winding and multi-spiral winding. Multi-spiral winding can specifically be double-spiral winding, triple-spiral winding, quadruple-spiral winding, or other numbers of spiral windings. Specifically, single-spiral winding involves a single resistance wire 22 spirally wound onto the heat-resistant main rope 21; double-spiral winding involves two resistance wires 22 spirally wound side-by-side onto the heat-resistant main rope 21; triple-spiral winding involves three resistance wires 22 spirally wound side-by-side onto the heat-resistant main rope 21, and so on. When performing multi-spiral winding of the same size resistance wire 22, the number of resistance wires 22 increases. Multiple resistance wires 22 connected in parallel can reduce resistance, increase load power, and improve the power density of the load resistance box. When performing multi-spiral winding of the same resistance value resistance wire 22, the radius increases, the overall heat dissipation surface area increases, and at the same power, it has a better heat dissipation effect.

[0038] In addition, the spacing between adjacent resistance wires 22 increases the gap between them on the same heat-resistant main rope 21, thereby improving the heat dissipation effect of the resistance wires 22. It also prevents short circuits between adjacent resistance wires 22 on the same heat-resistant main rope 21. Preferably, an insulating layer can also be provided on the surface of the resistance wires 22 to further prevent short circuits between adjacent resistance wires 22.

[0039] For panel 11, the array of cord-threading holes 111 is distributed on panel 11. The array of cord-threading holes 111 is distributed, densely and evenly arranged, which improves the space utilization.

[0040] Specifically, the threading holes 111 are arranged in a rectangular array, consisting of x rows and y columns. The resistance ropes 2 pass through the n rows of threading holes 111 on the panel 11, row by row. The number of resistance ropes 2 is z, where n × z = x, and n is a positive integer. For example, if x is 5 and y is 5, then 5 resistance ropes 2 can each pass through the insulating support 1 in a single row. If x is 8 and y is 9, then 8 resistance ropes 2 can each pass through the insulating support 1 in a single row, or 4 resistance ropes 2 can each pass through the insulating support 1 in two rows, or 2 resistance ropes 2 can each pass through the insulating support 1 in four rows.

[0041] Furthermore, such as Figure 2 , Figure 3 As shown, n is an even number and y is an odd number. A single resistance rope 2 passes through n rows of rope holes 111 one by one. When n is even, the single resistance rope 2 passes through the even-numbered rows one by one, and the end of the resistance rope 2 can pass through to the same side as the starting end. When y is odd, the end of the resistance rope 2 passes through the same panel 11, and the end of the resistance rope 2 and the starting end of the resistance rope 2 are located in the same column of the panel 11. It can be considered that the starting end and the end of each resistance rope 2 on the load resistor device are arranged in the starting column of the same panel 11. In this way, it is convenient to assemble and connect the starting end and the end of the resistance rope 2.

[0042] In some embodiments of the load resistor device, such as Figure 4 As shown, the two ends of the resistance rope 2 are provided with conductive connectors 23, and the conductive connectors 23 are connected.

[0043] Specifically, the conductive connector 23 has a conductive ring 231 at its first end and a crimping part 232 at its other end for crimping the resistance rope 2. The conductive ring 231 is an electrical connection structure used for the input or output of electrical energy. When the resistance ropes 2 need to be connected in series or parallel, the conductive ring 231 serves as a connection structure between the resistance ropes 2.

[0044] In some embodiments of the insulating support 1, such as Figure 1 As shown, the insulating support 1 also includes several pillars 12, which are disposed between the two panels 11, and the two ends of the pillars 12 are respectively connected to the two panels 11. Specifically, the panel 11 is a mica board, a ceramic board, or a bakelite board.

[0045] The load resistor device also includes an adjustment component 3, such as Figure 5 , Figure 6As shown, specifically, the adjustment component 3 includes an adjustment seat 31 and an adjustment member 32. The adjustment seat 31 is disposed on the rope hole 111 on the panel 11, and the adjustment seat 31 has an adjustment hole 311. The adjustment member 32 is movably disposed within the adjustment hole 311, and the adjustment member 32 has a through hole 321 for the resistance rope 2 to pass through, which is used to move the conductive connector 23. After the resistance rope 2 is threaded, both ends of the resistance rope 2 need to be shortened and the conductive connector 23 is assembled. Usually, the resistance rope 2 is threaded onto the insulating frame manually. In this way, it is difficult to achieve precise dimensions at both ends of the resistance rope 2, which can easily lead to an excessively long section of the resistance rope 2 between the two panels 11, resulting in a short circuit. In this embodiment, the adjustment component 3 is provided on the rope hole 111. The adjustment member 32 is used to move the conductive connector 23 by raising and lowering, specifically to move the crimping part 232, thereby tensioning the resistance rope 2. It also facilitates tightening the resistance rope 2 when it deforms.

[0046] Specifically, the adjusting hole 311 is a threaded hole, and the outer surface of the adjusting member 32 is provided with external threads, that is, the adjusting member 32 and the adjusting seat 31 are threadedly engaged.

[0047] Furthermore, such as Figure 5 , Figure 6 As shown, the adjustment assembly 3 also includes a locking screw 33. The adjustment seat 31 and the locking screw 33 are located on both sides of the panel 11 respectively. Part of the adjustment seat 31 passes through the rope hole 111. The locking screw 33 is threadedly connected to the part of the adjustment seat 31 that passes through the rope hole 111, thereby locking the adjustment seat 31.

[0048] Furthermore, such as Figure 6 As shown, the through hole 321 of the adjusting component 32 is also provided with a spring groove 322. The adjusting assembly 3 also includes a spring 34, one end of which extends into the spring groove 322, and the other end of which protrudes from the spring groove 322 and abuts against the conductive connector 23. The addition of the spring 34 effectively increases the adjustment range. At the same time, the elastic abutment of the spring 34 provides a buffer for the connection between the adjusting component 32 and the conductive connector 23, preventing the resistance rope 2 from being damaged by being pulled too hard.

[0049] Specifically, the adjusting element 32 includes a threaded cylinder and a knob, which is rotatably disposed at one end of the threaded cylinder. The outer surface of the threaded cylinder has external threads, and the interior of the threaded cylinder has the aforementioned through hole.

[0050] The adjusting seat 31 includes a sleeve and a base plate. The sleeve is disposed on the base plate and has the aforementioned through hole. The inner wall of the through hole has internal threads, and the outer side of the sleeve has external threads. During assembly, the sleeve extends into the rope hole, and the locking screw 33 is threadedly connected to the portion of the sleeve that passes through the rope hole 111. Thus, the adjusting seat 31 can be fixed by tightening the locking screw 33. A threaded cylinder extends into the through hole of the sleeve, and the threaded cylinder is threadedly connected to the sleeve.

[0051] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A load resistor device, characterized in that, The load resistor device includes an insulating support and a resistance rope; The insulating support includes two panels arranged side by side with a gap between them, and the panels are provided with a plurality of holes through which the resistance rope can pass; The resistance rope passes back and forth through the rope hole in the panel. The resistance rope includes a heat-resistant main rope and a resistance wire, with the resistance wire spirally wound around the heat-resistant main rope.

2. The load resistor device as described in claim 1, characterized in that, The heat-resistant main rope is a fiberglass rope.

3. The load resistor device as described in claim 1, characterized in that, The array of rope-threading holes is distributed on the panel.

4. The load resistor device as described in claim 3, characterized in that, The rope holes are arranged in a rectangular array, which includes x rows and y columns; The resistance rope passes through n rows of rope holes on the panel, and the number of resistance ropes is z, where n×z=x, and n is an integer greater than zero.

5. The load resistor device as described in claim 4, characterized in that, When n is even and y is odd, a single resistance rope passes through the n rows of holes one by one.

6. The load resistor device as described in claim 5, characterized in that, The resistance rope is equipped with conductive connectors at both ends.

7. The load resistor device as described in claim 6, characterized in that, The first end of the conductive connector is provided with a conductive ring, and the other end of the conductive connector is provided with a crimping part for crimping the resistance rope.

8. The load resistor device as described in claim 1, characterized in that, The insulating support also includes several pillars, which are disposed between the two panels, and the two ends of the pillars are respectively connected to the two panels.

9. The load resistor device as described in claim 1, characterized in that, The panel is made of mica board, ceramic board or bakelite board.

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