CN209804361U - Alloy ribbon spiral resistor - Google Patents

Abstract

The utility model relates to a resistor technical field especially relates to an alloy banding spiral resistor. Including mount (1), fix lead screw (2) on the mount, set up mica plate (3) on the lead screw, pass resistance band (4) of mica plate, welded fastening lead wire piece (5) at resistance band both ends and fix connecting terminal (6) on the lead wire piece, resistance band (4) are the spiral banding, and the cross section of resistance band (4) is the rectangle, and lead wire piece (5) are through face welded fastening with resistance band (4). The resistor is firm in fixation, good in heat dissipation effect and high in space utilization rate.

Description

Alloy ribbon spiral resistor

Technical Field

The utility model relates to a resistor technical field especially relates to an alloy banding spiral resistor.

Background

The original alloy spring resistor is mainly used as a starting resistor, a speed regulating resistor, a braking resistor and a frequency converter brake resistor of a motor or a discharge resistor of an electric automobile system and the like. The support is mainly formed by combining a mica plate, a screw rod, a metal sleeve, a standard part and the like, and the spring resistance wires such as iron-chromium-aluminum alloy, nickel-chromium alloy and the like are used as energy consumption and heating elements to form a resistor.

In the resistor in the prior art, the section of the resistance wire is circular, so that the welding position of the resistance wire and the connecting terminal is only in point contact when being welded, the contact area is small, and poor contact and even desoldering can be caused when large current passes through the resistor for a long time; the heat dissipation area is small, and the heat is easy to generate; and space utilization is also low.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the alloy ribbon spiral resistor is firm in fixation, good in heat dissipation effect and high in space utilization rate.

The utility model adopts the technical proposal that: the utility model provides an alloy banding spiral resistor, includes the mount, fixes lead screw, the mica plate of setting on the lead screw on the mount, passes the resistance area of mica plate, welded fastening at the lead wire piece at resistance area both ends and fixes the connecting terminal on the lead wire piece, the resistance area is the spiral banding, and the cross section in resistance area is the rectangle, and lead wire piece and resistance area pass through face welded fastening.

Preferably, the number of the screw rods is four, the mica plates are fixed on the screw rods side by side through mounting holes at four corners, and a metal sleeve sleeved on the screw rod is arranged between any two adjacent mica plates.

Preferably, the mica plate is provided with a through hole, and the resistance tape is arranged in the through hole in a penetrating manner.

Preferably, the lead tab is L-shaped.

Preferably, the resistance belt is made of iron-chromium-aluminum alloy steel materials.

Preferably, the mica plate is a light mica hard insulating plate.

compared with the prior art in the structure more than adopting, the utility model has the advantages of it is following: firstly, the resistance band is made into a spiral band shape, and the cross section of the resistance band is rectangular, so that the lead sheet can be subjected to surface welding when being welded on the resistance band, the contact area is larger, and the welding is reliable; the strip resistor has large heat dissipation area, large current, small heat, and stable and reliable resistance value; and the space utilization rate is high, and the floor area of the resistor can be reduced.

the L-shaped lead piece is adopted, so that the resistance band can be well led out, and the connecting terminal can be conveniently fixed.

The resistance band is made of the iron-chromium-aluminum alloy steel material, so that the stability of the resistance value is good, and the heat dissipation performance is good.

The mica plate is made of the hard optical mica insulation plate, and has the advantages of high temperature resistance, high insulation grade, smooth surface, low possibility of water accumulation and good moisture resistance.

Drawings

Fig. 1 is a front view of the alloy ribbon spiral resistor of the present invention.

Fig. 2 is a side view of the alloy ribbon spiral resistor of the present invention.

Fig. 3 is a schematic structural diagram of a resistance band in the alloy strip-shaped spiral resistor of the present invention.

1. a fixed mount; 2. a screw rod; 3. mica plates; 4. a resistance band; 5. a lead sheet; 6. a connection terminal; 7. a metal sleeve.

Detailed Description

the present invention will be further described below with reference to specific embodiments, but the present invention is not limited to the following specific embodiments.

The utility model provides an alloy banding spiral resistor, includes mount 1, lead screw 2, mica plate 3, resistance tape 4, lead wire piece 5 and connecting terminal 6, wherein:

The fixed mount 1 is a frame body of the whole resistor and is used for mounting and fixing other parts;

Four screw rods 2 are fixed in the fixed frame 1;

The mica plates 3 are fixed on the screw rod 2 side by side through mounting holes at four corners, two ends of the screw rod 2 are locked through nuts, and the mica plates 3 are photo mica hard insulating plates which can resist 500 ℃ and are insulated by 2200V;

Resistance tape 4, for the spiral strip shape, open at the middle part corresponding position of all mica plates 3 that set up side by side has a plurality of through-holes, and the spiral resistance tape is horizontal S shape or vertical S shape according to actual need and synthesizes and encircle between the through-hole of mica plate 3, and the both ends of encircleing the final spiral resistance tape of back are qualified for the next round of competitions in the front to resistance tape 4 mainly adopts iron chromium aluminium alloy steel material to make, and the main chemical composition that 0Cr15AL5 contains is fixed: cr13-16, AL5-6, Y0.1-1.5, Zr0.1-0.5, Ni0.5-1, and the balance of Fe;

The lead pieces 5 are arranged at two ends of the resistance band 4, are welded and fixed with the surface of the resistance band 4 and are L-shaped;

A connection terminal 6 having a plurality of mounting holes in the lead sheet 5, the connection terminal 6 being fixed in the mounting holes;

According to the installation method, a plurality of light hard insulating mica plates 3 are fixedly installed on a screw rod 2 side by side through installation holes at four corners, any two adjacent mica plates 3 are isolated and fixed by a metal sleeve 7, the mica plates 3 are locked and fixed at two ends of the screw rod 2 through nuts, a plurality of through holes are formed in corresponding positions of the middle parts of all the mica plates 3 arranged side by side, a spiral resistance tape is comprehensively encircled between the through holes of the light hard insulating mica in a horizontal S shape or a vertical S shape according to actual requirements, the two ends of the spiral resistance tape are led out in the front direction after encircling, and are welded with a lead sheet 5, and then a connecting terminal 6 is arranged on the lead sheet 5.

The key points of the technology of the invention are as follows: the alloy ribbon spiral resistor has the advantages of large heat dissipation area, difficult heating, large electrifying current, stable resistance value and convenient installation. The matched light hard insulating plate has good high temperature resistance, high pressure resistance and moisture resistance.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (6)

1. The utility model provides an alloy banding spiral resistor, includes mount (1), fixes lead screw (2) on the mount, sets up mica plate (3) on the lead screw, passes resistance band (4) of mica plate, welded fastening at lead wire piece (5) at resistance band both ends and fix connecting terminal (6) on the lead wire piece, its characterized in that: the resistance band (4) is spiral band-shaped, the cross section of the resistance band (4) is rectangular, and the lead piece (5) and the resistance band (4) are fixed through surface welding.

2. The alloy ribbon spiral resistor of claim 1, wherein: the lead screw (2) are four, the mica plates (3) are fixed on the lead screw (2) side by side through mounting holes at four corners, and a metal sleeve (7) sleeved on the lead screw (2) is arranged between any two adjacent mica plates (3).

3. The alloy ribbon spiral resistor of claim 1, wherein: the mica plate (3) is provided with a through hole, and the resistance tape (4) penetrates through the through hole.

4. the alloy ribbon spiral resistor of claim 1, wherein: the lead sheet (5) is L-shaped.

5. The alloy ribbon spiral resistor of claim 1, wherein: the resistance belt (4) is made of iron-chromium-aluminum alloy steel materials.

6. the alloy ribbon spiral resistor of claim 5, wherein: the mica plate (3) is a light mica hard insulating plate.