CN211652960U - Rectangular high-precision large-current direct-current standard resistor - Google Patents

Abstract

The utility model discloses a rectangle high accuracy heavy current direct current standard resistance, including the insulating electrician's bottom plate of high temperature, the top of the insulating electrician's bottom plate of high temperature is equipped with the standard resistance body, the top of standard resistance body is provided with two of symmetry and transships utmost point post, the top of transshipping utmost point post is provided with the plum blossom bolt, the outside of insulating electrician's bottom plate of high temperature and standard resistance body is provided with the shielding layer, the top of shielding layer is provided with two collection point terminals of symmetry. The utility model discloses sustainable heavy current is long-time work, low-power consumption, the temperature rise is low, the temperature floats that the coefficient is little, resistant vibration, shock resistance and interference immunity are strong, the precision is high and advantages such as linearity height have guaranteed measuring precision, stability and tight fitting nature, can replace traditional direct current standard resistance, direct current standard shunt and hall sensor completely.

Description

Rectangular high-precision large-current direct-current standard resistor

Technical Field

The utility model relates to an electronic measurement technical field especially relates to a rectangle high accuracy heavy current direct current standard resistance.

Background

In the technical field of electronic metering, the direct current standard resistor can be used for sampling and detecting current limiting, backflow and current equalizing of power supplies of a battery management system, an electronic complete machine, a communication system and an automatic control system. The DC standard resistor is manufactured according to the principle that when DC passes through, voltage is generated at two ends of the resistor, and the DC standard resistor is a low resistor. When direct current passes through, secondary voltage drop is generated to be displayed by a secondary instrument. The existing direct current standard shunt and standard resistor generally have the problems of small overload amount, high temperature rise, large temperature drift, large volume, difficult installation, easy loosening, difficult production, low precision and the like.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to solve the shortcoming that exists among the prior art, if: the existing DC standard shunt and standard resistor generally have the problems of small overload amount, high temperature rise, large temperature drift, large volume, difficult installation, easy loosening, difficult production, low precision and the like, and the rectangular high-precision large-current DC standard resistor is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a rectangle high accuracy heavy current direct current standard resistance, includes the insulating electrician's bottom plate of high temperature, the top of the insulating electrician's bottom plate of high temperature is equipped with the standard resistance body, the top of standard resistance body is provided with two of symmetry and transships utmost point post, the top of transshipping utmost point post is provided with the plum blossom bolt, the outside of insulating electrician's bottom plate of high temperature and standard resistance body is provided with the shielding layer, the top of shielding layer is provided with two collection point terminals of symmetry.

Preferably, the standard resistor body comprises two red copper connecting blocks and a manganese-copper alloy rod, the manganese-copper alloy rod is fixedly connected between the two red copper connecting blocks, the top of each red copper connecting block is provided with a collection point threaded hole and a mounting threaded hole, and the bottom of each red copper connecting block is provided with a bottom plate mounting threaded hole.

Preferably, the overload post comprises an overload post bolt, an overload threaded hole is formed in the top of the overload post bolt, the bottom of the plum blossom bolt is in threaded connection with the inner surface of the overload threaded hole, and the bottom of the overload post bolt is in threaded connection with the inner surface of the installation bolt hole.

Preferably, the surface of the shielding layer is provided with heat dissipation holes communicated with the inner surface of the shielding layer, the heat dissipation holes are round holes or square holes, the top of the shielding layer is provided with through holes communicated with the inner surface of the shielding layer, the bottom end of the collecting point binding post penetrates through the through holes and is in threaded connection with the inner surface of the collecting point threaded hole, and the bottom of the shielding layer is provided with a bottom plate mounting through hole.

Preferably, the top of the high-temperature insulation electrician base plate is provided with a mounting hole, the mounting hole is connected with the mounting threaded hole through a bolt, the top of the high-temperature insulation electrician base plate is provided with a combination threaded hole, the base plate mounting through hole is corresponding to the mounting threaded hole and is matched with the mounting threaded hole, and the bottom of the high-temperature insulation electrician base plate is fixedly connected with an anti-skidding foot pad.

Preferably, the standard resistor body, the overload pole, the plum blossom bolt, the collecting point binding post, the shielding layer and the high-temperature insulating electrical bottom plate are all embedded and tightly matched.

Preferably, the standard resistor body is in a cuboid structure, adopts a four-end connection method, and is suitable for precision measurement of direct current.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses sustainable heavy current is long-time work, low-power consumption, the temperature rise is low, the temperature floats that the coefficient is little, resistant vibration, shock resistance and interference immunity are strong, the precision is high and advantages such as linearity height have guaranteed measuring precision, stability and tight fitting nature, can replace traditional direct current standard resistance, direct current standard shunt and hall sensor completely.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

fig. 3 is a schematic view of the three-dimensional structure of the shielding layer of the present invention;

fig. 4 is a schematic diagram of the three-dimensional structure of the standard resistor body of the present invention.

In the figure: 1. a standard resistor body; 101. a red copper connecting block; 102. a manganese-copper alloy rod; 103. a collection point threaded hole; 104. installing a threaded hole; 105. the bottom plate is provided with a threaded hole; 2. an overload pole post; 201. an overload threaded hole; 202. an overload pole bolt; 3. a quincuncial bolt; 4. collecting a point binding post; 5. a shielding layer; 501. a through hole; 502. heat dissipation holes; 503. a through hole is arranged on the bottom plate; 6. a high temperature insulating electrical backplane; 601. Mounting holes; 602. combining the threaded hole; 603. an anti-skid foot pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-4, a rectangular high-precision large-current direct current standard resistor comprises a high-temperature insulating electrical bottom plate 6, a standard resistor body 1 is arranged at the top of the high-temperature insulating electrical bottom plate 6, the standard resistor body 1 comprises two red copper connecting blocks 101 and a manganese copper alloy rod 102, the manganese copper alloy rod 102 is fixedly connected between the two red copper connecting blocks 101, the red copper connecting blocks 101 and the manganese copper alloy rod 102 are welded into a whole by high-temperature silver brazing to prevent a series of problems of large resistance error, temperature rise, large temperature drift and the like caused by resistance property change due to insufficient solder, missing solder or redundant solder impurities, the manganese copper alloy rods 102 are trimmed in quantity and resistance value according to different resistance value requirements so as to achieve the most accurate precision, a collection point threaded hole 103 and a mounting threaded hole 104 are formed at the top of the red copper connecting blocks 101 to prevent precision deviation caused by wrong wiring direction, the bottom of the red copper connecting block 101 is provided with a bottom plate mounting threaded hole 105, the standard resistor body 1 is in a cuboid structure, and a four-end connection method is adopted, so that the standard resistor is suitable for precision measurement of direct current.

The top of standard resistance body 1 is provided with two of symmetry and transships utmost point post 2, and the utmost point post 2 of transshipping includes transshipping utmost point post bolt 202, and transshipping screw hole 201 has been seted up at the top of transshipping utmost point post bolt 202, and plum blossom bolt 3's bottom threaded connection is on transshipping screw hole 201's internal surface for the crimping line bank of transshipping to locking, the bottom threaded connection of transshipping utmost point post bolt 202 is on the internal surface of installation screw hole 104.

The top of transshipping utmost point post 2 is provided with plum blossom bolt 3, and the outside of high temperature insulation electrician's bottom plate 6 and standard resistance body 1 is provided with shielding layer 5, and shielding layer 5's top is provided with two collection point terminals 4 of symmetry, and the louvre 502 of 5 internal surfaces of intercommunication shielding layer is seted up on shielding layer 5's surface, and louvre 502 is round hole or square hole, and through setting up louvre 502, the air all can be through louvre 502 circulation, prevents that standard resistance is overheated in the use.

Through-hole 501 of 5 internal surfaces of intercommunication shielding layer is seted up at shielding layer 5's top, the bottom of gathering point terminal 4 runs through-hole 501 and threaded connection is on the internal surface of gathering point screw hole 103, bottom plate installation through-hole 503 has been seted up to shielding layer 5's bottom, mounting hole 601 has been seted up at the top of high temperature insulation electrician's bottom plate 6, pass through bolted connection between mounting hole 601 and the bottom plate installation screw hole 105, combination screw hole 602 has been seted up at the top of high temperature insulation electrician's bottom plate 6, bottom plate installation through-hole 503 corresponds and the adaptation with combination screw hole 602, the bottom fixedly connected with antiskid callus on the sole 603 of high temperature insulation electrician's bottom plate 6, it is more steady to make standard resistance put, standard resistance body 1, overload utmost point 2, plum blossom bolt 3, gather point.

This standard resistance is through with standard resistance body 1, gather some terminal 4, transship utmost point post 2, plum blossom bolt 3 is installed between shielding layer 5 and high temperature insulation electrician's bottom plate 6, four or more anti-skidding callus on the sole 603 are installed to 6 bottoms of high temperature insulation electrician's bottom plate, the whole cuboid that is of standard resistance, not only the outward appearance is clean and tidy pleasing to the eye, and the overcurrent ability of standard resistance has been improved, vibration resistance, shock resistance, locking power and reduction external magnetic field interference, measurement accuracy and stability have been guaranteed, the user can install the use fast when using.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims (7)

1. The utility model provides a rectangle high accuracy heavy current direct current standard resistance, includes high temperature insulation electrician's bottom plate (6), its characterized in that, the top of high temperature insulation electrician's bottom plate (6) is equipped with standard resistance body (1), the top of standard resistance body (1) is provided with two of symmetry and transships utmost point post (2), the top of transshipping utmost point post (2) is provided with plum blossom bolt (3), the outside of high temperature insulation electrician's bottom plate (6) and standard resistance body (1) is provided with shielding layer (5), the top of shielding layer (5) is provided with two of symmetry and gathers some terminal (4).

2. The rectangular high-precision large-current direct-current standard resistor according to claim 1, wherein the standard resistor body (1) comprises two red copper connecting blocks (101) and a manganese-copper alloy rod (102), the manganese-copper alloy rod (102) is fixedly connected between the two red copper connecting blocks (101), a collection point threaded hole (103) and a mounting threaded hole (104) are formed in the top of each red copper connecting block (101), and a bottom plate mounting threaded hole (105) is formed in the bottom of each red copper connecting block (101).

3. The rectangular high-precision large-current direct-current standard resistor according to claim 2, wherein the overload post (2) comprises an overload post bolt (202), an overload threaded hole (201) is formed in the top of the overload post bolt (202), the bottom of the plum bolt (3) is in threaded connection with the inner surface of the overload threaded hole (201), and the bottom of the overload post bolt (202) is in threaded connection with the inner surface of the installation threaded hole (104).

4. The rectangular high-precision large-current direct-current standard resistor according to claim 2, wherein a heat dissipation hole (502) communicated with the inner surface of the shielding layer (5) is formed in the surface of the shielding layer (5), the heat dissipation hole (502) is a round hole or a square hole, a through hole (501) communicated with the inner surface of the shielding layer (5) is formed in the top of the shielding layer (5), the bottom end of the collection point binding post (4) penetrates through the through hole (501) and is in threaded connection with the inner surface of the collection point threaded hole (103), and a bottom plate mounting through hole (503) is formed in the bottom of the shielding layer (5).

5. The rectangular high-precision large-current direct-current standard resistor according to claim 4, wherein a mounting hole (601) is formed in the top of the high-temperature insulating electrician base plate (6), the mounting hole (601) is connected with the base plate mounting threaded hole (105) through a bolt, a combining threaded hole (602) is formed in the top of the high-temperature insulating electrician base plate (6), the base plate mounting through hole (503) corresponds to and is matched with the combining threaded hole (602), and an anti-skid foot pad (603) is fixedly connected to the bottom of the high-temperature insulating electrician base plate (6).

6. The rectangular high-precision large-current direct-current standard resistor as claimed in claim 1, wherein the standard resistor body (1), the overload pole (2), the plum bolt (3), the collection point terminal (4), the shielding layer (5) and the high-temperature insulating electrician bottom plate (6) are all in embedded tight fit.

7. A rectangular high-precision large-current DC standard resistor as claimed in claim 1, wherein the standard resistor body (1) is a rectangular parallelepiped structure, and is suitable for precision measurement of DC current by adopting a four-terminal connection method.

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