Small resistor

Abstract

The utility model belongs to the field of resistors, and particularly relates to a small resistor. The resistor comprises two insulating supporting pieces, N resistive energy absorption elements, an insulating pull rod, two conductive fixing assemblies, N + 1 conductive terminal plates and two conductive connecting bars, a gap is formed between the two insulating supporting pieces; the N resistive energy absorption elements are arranged in the intervals, and the N + 1 conductive terminal plates are arranged between every two adjacent resistive energy absorption elements and between the outermost resistive energy absorption element and the corresponding insulation supporting piece respectively. Along the direction from one insulating support member to the other insulating support member, the odd number of conductive terminal plates are respectively connected with one conductive connection bar, and the even number of conductive terminal plates are respectively connected with the other conductive connection bar. The insulating pull rod sequentially penetrates through the first insulating supporting piece, the conductive terminal plate, the resistive energy absorption element and the second insulating supporting piece; the two conductive fixing assemblies are arranged at the two ends of the insulating pull rod respectively. The product provided by the utility model is small in size and low in production cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to a resistor. BACKGROUND

[0002] The resistor is widely applied to capacitor charging and discharging, power transmission and distribution filtering, flexible direct starting current limiting, electric drive load, AC and DC driving, pulse power supply, induction heating, pulse network, laser and other fields.

[0003] At present, the resistor application scene of milliohm level resistance value and megajoule level energy requirement is more and more, under the condition of meeting megajoule level energy absorption, the more resistive energy absorbing elements, the lower the temperature rise, but at the same time, the resistance value of single resistive energy absorbing element is required to be lower and lower. With the current technical process level, the material resistivity and size limit of resistive energy absorbing element has the lowest use lower limit requirement, and the resistance value of single resistive energy absorbing element less than 50 milliohm will not be allowed to use. In addition, as the overall power equipment develops towards intelligentization and miniaturization, the increase of the volume of the resistor and the limitation of the structure will lead to the limitation of its use range, and it is difficult to adapt to the high-speed development of the industry.

[0004] Therefore, it is urgent to provide a resistor with smaller volume to meet the application scene. UTILITY MODEL CONTENT

[0005] The utility model aims at solving the technical problem that the existing resistor is large in volume, leading to limited use range, and provides a small resistor.

[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0007] A small resistor, which is characterized in that:

[0008] It comprises two insulating support pieces, N resistive energy absorbing elements, an insulating pull rod, two conductive fixing assemblies, N+1 conductive terminal plates and two conductive connection rows; N is greater than or equal to 3.

[0009] The two insulating support pieces are arranged on the working ground respectively, and a space is arranged between the two insulating support pieces.

[0010] The N resistive energy absorbing elements are arranged in the space along the direction from one insulating support piece to another insulating support piece, the N+1 conductive terminal plates are arranged between adjacent two resistive energy absorbing elements and between the outermost resistive energy absorbing element and the corresponding insulating support piece, and are arranged in mutual adhesion.

[0011] Along the direction from one insulating support piece to another insulating support piece, the odd-numbered conductive terminal plates are connected with one conductive connection row respectively, the even-numbered conductive terminal plates are connected with another conductive connection row respectively, and the two conductive connection rows are used as incoming line end and outgoing line end respectively.

[0012] The insulating pull rod passes through the first insulating support, the N+1 conductive terminal plates, the N resistive energy-absorbing elements and the second insulating support in sequence from one insulating support to another insulating support;

[0013] Two conductive fixing assemblies are arranged at two ends of the insulating pull rod respectively, and are used for fixing and clamping the two insulating supports, the N+1 conductive terminal plates and the N resistive energy-absorbing elements.

[0014] Further, the conductive fixing assembly comprises an elastic member and a conductive end head.

[0015] The elastic member and the conductive end head are sleeved on the insulating pull rod, one end of the elastic member is abutted against the outside of the insulating support, and the other end is abutted against the conductive end head.

[0016] The conductive end head is used for extruding the elastic member, so as to fix and clamp the two insulating supports, the N+1 conductive terminal plates and the N resistive energy-absorbing elements.

[0017] Further, the circumferential side of the conductive end head is provided with a positioning pin in the radial direction, and the circumferential side of the insulating pull rod is provided with a positioning groove corresponding to and matched with the positioning pin, and the bottom end of the positioning pin is inserted into the positioning groove, so as to fix the conductive end head on the insulating pull rod.

[0018] Further, the conductive terminal plate comprises an integrally connected conductive plate and a connecting terminal.

[0019] The radial profile of the conductive plate is matched with the radial profile of the resistive energy-absorbing element, and one end of the connecting terminal is connected to the circumferential side of the conductive plate.

[0020] The conductive plate is arranged between the adjacent two resistive energy-absorbing elements and between the outermost resistive energy-absorbing element and the corresponding insulating support, and is arranged in abutment with the same; the other end of the connecting terminal is connected with the corresponding conductive connecting row.

[0021] Further, the connecting terminal is an L-shaped plate, comprising a long plate and a short plate connected to one end of the long plate; the other end of the long plate is connected to the circumferential side of the conductive plate, and the short plate is connected to the conductive connecting row through a bolt.

[0022] Further, the long plate and the conductive plate are connected through a circular arc transition.

[0023] Further, the conductive plate is a metal plate, the connecting terminal is a metal terminal, the elastic member is a disc spring, and the conductive end head is a metal end head. The conductive connecting row is a metal connecting row.

[0024] The beneficial effects of the utility model are as follows:

[0025] The resistor connecting mode provided by the utility model has high insulation performance, strong discharge current capacity, large energy absorption, fast heat dissipation, simple structure, safe and reliable use.

[0026] Under the same energy absorption setting, the adjacent two resistive energy absorption elements are independently isolated, the one end of the plurality of resistive energy absorption elements is connected with the same name end as the resistor incoming line positive electrode, the other end is connected with the same name end as the resistor outgoing line negative electrode, the product structure is in series connection, the electrical connection mode is parallel connection, the volume is small, and the production cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a structural schematic view of the utility model embodiment;

[0028] In the drawing: 1-insulating support piece; 2-conductive end; 3-insulating pull rod; 4-positioning pin; 5-elastic member; 6-resistive energy absorption element; 7-conductive terminal plate, 71-conductive plate, 72-connection terminal; 8-conductive connection row. DETAILED DESCRIPTION

[0029] In order to make the purpose, advantages and characteristics of the utility model more clear, the following will combine the drawings and specific embodiments to make further detailed description on the small resistor provided by the utility model. According to the following specific embodiments, the advantages and characteristics of the utility model will be more clear.

[0030] Referring to Figure 1 , the embodiment of the small resistor comprises two insulating support pieces 1, N resistive energy absorption elements 6, one insulating pull rod 3, two conductive fixed assemblies, N+1 conductive terminal plates 7 and two conductive connection rows 8; N is greater than or equal to 3.

[0031] The two insulating support pieces 1 are respectively arranged on the working ground, and a spacing is arranged between the two insulating support pieces 1, so as to provide mounting positions for subsequent components.

[0032] In the embodiment, the number of resistive energy absorption elements 6 is taken as 7 for example, and accordingly, the number of conductive terminal plates 7 is 8.

[0033] The seven resistive energy absorption elements 6 are arranged in the spacing along the direction from one insulating support piece 1 to another insulating support piece 1, and the eight conductive terminal plates 7 are respectively arranged between the adjacent two resistive energy absorption elements 6 and between the outermost resistive energy absorption element 6 and the corresponding insulating support piece 1.

[0034] Specifically, the conductive terminal plate 7 comprises an integrally connected conductive plate 71 and a connecting terminal 72. The conductive plate 71 is a metal plate, and its radial profile is matched with the radial profile of the resistive energy-absorbing element 6; the connecting terminal 72 is a metal terminal, and one end of the connecting terminal 72 is connected to the peripheral side of the conductive plate 71. The conductive plate 71 is arranged between two adjacent resistive energy-absorbing elements 6 and between the outermost resistive energy-absorbing element 6 and the corresponding insulating support 1, and is arranged in close contact with each other. The connecting terminal 72 is an L-shaped plate, comprising a long plate and a short plate connected to one end of the long plate; the other end of the long plate is connected to the peripheral side of the conductive plate 71, and the connecting portion of the long plate and the conductive plate 71 is in a circular arc transition.

[0035] In the direction from one insulating support 1 to another insulating support 1, the short plates of the odd-numbered conductive terminal plates 7 are respectively connected to one conductive connecting row 8 through bolts, and the short plates of the even-numbered conductive terminal plates 7 are respectively connected to another conductive connecting row 8 through bolts, and the two conductive connecting rows 8 are respectively used as the input terminal and the output terminal of the resistor, and are connected to the external wire harness.

[0036] Preferably, the aforementioned conductive connecting row 8 is specifically a metal connecting row.

[0037] The insulating pull rod 3 sequentially passes through the first insulating support 1, the eight conductive plates, the seven resistive energy-absorbing elements 6 and the second insulating support 1 in the direction from one insulating support 1 to another insulating support 1; two conductive fixing assemblies are respectively arranged at both ends of the insulating pull rod 3, and are used for fixedly clamping the two insulating supports 1, the eight conductive terminal plates 7 and the seven resistive energy-absorbing elements 6.

[0038] Specifically, the conductive fixing assembly comprises an elastic member 5 and a conductive end head 2; the elastic member 5 is a disc spring, and the conductive end head 2 is a metal end head. The elastic member 5 and the conductive end head 2 are both sleeved on the insulating pull rod 3, one end of the elastic member 5 abuts against the outer side of the insulating support 1, and the other end of the elastic member 5 abuts against the conductive end head 2; the conductive end head 2 is fixedly clamped to the two insulating supports 1, the eight conductive terminal plates 7 and the seven resistive energy-absorbing elements 6 by extruding the elastic member 5, so as to avoid damage of the resistive energy-absorbing elements 6 caused by mutual extrusion in thermal expansion and contraction. A positioning pin 4 is arranged on the peripheral side of the conductive end head 2 in the radial direction, and the peripheral side of the insulating pull rod 3 is provided with a positioning groove corresponding to and matched with the positioning pin 4, and the bottom end of the positioning pin 4 is inserted into the positioning groove, so as to fix the conductive end head 2 on the insulating pull rod 3.

Claims

1. A small resistor characterized in that: it comprises two insulating supports (1), N resistive energy-absorbing elements (6), an insulating pull rod (3), two conductive fixing assemblies, N+1 conductive terminal plates (7) and two conductive connection rows (8); N≥3; the two insulating supports (1) are respectively arranged on the ground, and a gap is arranged between the two insulating supports (1); N resistive energy-absorbing elements (6) are arranged in the gap along the direction from one insulating support (1) to another insulating support (1), N+1 conductive terminal plates (7) are respectively arranged between adjacent two resistive energy-absorbing elements (6), and between the outermost resistive energy-absorbing element (6) and the corresponding insulating support (1), and are arranged in close contact with each other; along the direction from one insulating support (1) to another insulating support (1), the odd-numbered conductive terminal plates (7) are respectively connected with one conductive connection row (8), the even-numbered conductive terminal plates (7) are respectively connected with another conductive connection row (8), and the two conductive connection rows (8) are respectively used as an incoming line end and an outgoing line end; the insulating pull rod (3) sequentially passes through the first insulating support (1), N+1 conductive terminal plates (7), N resistive energy-absorbing elements (6) and the second insulating support (1) along the direction from one insulating support (1) to another insulating support (1); the two conductive fixing assemblies are respectively arranged at the two ends of the insulating pull rod (3), and are used for fixing and clamping the two insulating supports (1), N+1 conductive terminal plates (7) and N resistive energy-absorbing elements (6). 2.The small resistor according to claim 1, characterized in that: the conductive fixing assembly comprises an elastic element (5) and a conductive end head (2); the elastic element (5) and the conductive end head (2) are both sleeved on the insulating pull rod (3), one end of the elastic element (5) abuts against the outside of the insulating support (1), and the other end abuts against the conductive end head (2); the conductive end head (2) is used for pressing the elastic element (5) to fix and clamp the two insulating supports (1), N+1 conductive terminal plates (7) and N resistive energy-absorbing elements (6). 3.The small resistor according to claim 2, characterized in that: a positioning pin (4) is arranged on the circumferential side of the conductive end head (2) in the radial direction, a positioning groove corresponding to and matching the positioning pin (4) is arranged on the circumferential side of the insulating pull rod (3), and the bottom end of the positioning pin (4) is inserted into the positioning groove to fix the conductive end head (2) on the insulating pull rod (3). 4.The small resistor according to claim 3, characterized in that: the elastic element (5) is a disc spring, and the conductive end head (2) is a metal end head. 5.The small resistor according to any one of claims 1-4, characterized in that: the conductive terminal plate (7) comprises an integrally connected conductive plate (71) and a connection terminal (72); the radial profile of the conductive plate (71) is matched with the radial profile of the resistive energy-absorbing element (6), and one end of the connection terminal (72) is connected to the circumferential side of the conductive plate (71). The conductive plate (71) is arranged between two adjacent resistive energy-absorbing elements (6) and between the outermost resistive energy-absorbing element (6) and the corresponding insulating support (1), and is arranged in close contact therewith; the other end of the connecting terminal (72) is connected with the corresponding conductive connecting row (8).

6. The small resistor according to claim 5, characterized in that: The connecting terminal (72) is an L-shaped plate, including a long plate and a short plate connected with one end of the long plate; the other end of the long plate is connected with the circumferential side of the conductive plate (71), and the short plate is connected with the conductive connecting row (8) through a bolt.

7. The small resistor according to claim 6, characterized in that: The long plate and the conductive plate (71) are connected through a circular arc transition.

8. The small resistor according to claim 7, characterized in that: The conductive plate (71) is a metal plate, and the connecting terminal (72) is a metal terminal.

9. The small resistor according to claim 1, characterized in that: The conductive connecting row (8) is a metal connecting row.

Images