CN211652961U

CN211652961U - U-shaped high-precision direct current standard resistor

Info

Publication number: CN211652961U
Application number: CN201922500519.7U
Authority: CN
Inventors: 钱激扬; 钱云才; 谭剑炀
Original assignee: Yueqing Cg Electric Technology Co ltd
Current assignee: Yueqing Cg Electric Technology Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-10-09
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a U type high accuracy direct current standard resistance, including the standard resistance body, the top threaded connection of standard resistance body has the overload cylinder, the top threaded connection who transships the cylinder has the overload terminal, the metallic shield layer has been cup jointed in the outside of standard resistance body, the top of metallic shield layer is provided with two collection terminals of symmetry, the insulating bottom plate of high temperature has been cup jointed to the bottom of standard resistance body, the equal threaded connection in front and the back of metallic shield layer has construction bolt. The utility model has the advantages of sustainable long-time heavy current work, low-power consumption, temperature rise are low, the temperature floats that the coefficient is little, resistant vibration, shock resistance and interference immunity are strong, the precision is high and the linearity is high, has guaranteed measuring precision, stability and close-fitting nature, can replace traditional direct current standard resistance, direct current standard shunt and hall sensor completely.

Description

U-shaped high-precision direct current standard resistor

Technical Field

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

Background

The DC 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 resistor has the problems of temperature rise, large temperature drift, large volume, difficult installation, easy looseness, difficult processing, low precision, small measurement range 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 resistor has the problems of high temperature rise, large temperature drift, large volume, difficult installation, easy looseness, difficult processing, low precision, small measurement range and the like, and the U-shaped high-precision 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 U type high accuracy direct current standard resistance, includes the standard resistance body, the top threaded connection of standard resistance body has the overload cylinder, the top threaded connection who transships the cylinder has the overload terminal, the metallic shield layer has been cup jointed in the outside of standard resistance body, the top of metallic shield layer is provided with two collection terminals of symmetry, the high temperature insulation bottom plate has been cup jointed to the bottom of standard resistance body, the equal threaded connection in front and the back of metallic shield layer has mounting bolt, the bottom of high temperature insulation bottom plate is provided with four anti-skidding callus on the sole.

Preferably, the standard resistor body includes two connecting blocks, two the right side of connecting block utilizes high-frequency induction silver brazing welding to connect as an organic whole through manganese-copper alloy area, manganese-copper alloy area is the U-shaped, overload threaded hole has been seted up at the top of connecting block, the collection screw hole that is located overload threaded hole right side is seted up at the top of connecting block, the fixed screw hole that is located overload threaded hole right side is seted up to the bottom of connecting block, the bottom threaded connection of overload cylinder is on overload threaded hole's internal surface.

Preferably, the top of the metal shielding layer is provided with a collection point through hole positioned on the outer side of the collection binding post, the bottom end of the collection binding post penetrates through the collection point through hole and is in threaded connection with the inner surface of the collection threaded hole, and the front side and the back side of the metal shielding layer are both provided with side through holes.

Preferably, one end of the mounting bolt close to the metal shielding layer penetrates through the side through hole.

Preferably, the bottom of the high-temperature insulating bottom plate is provided with a mounting through hole, and the top of the anti-skidding foot pad penetrates through the mounting through hole and is in threaded connection with the inner surface of the fixing threaded hole.

Preferably, the standard resistor body, the overload cylinder, the metal shielding layer and the high-temperature insulating bottom plate are all embedded and tightly matched.

Preferably, the connecting block is made of brass or red copper, and the manganese-copper alloy belt is installed in a single-layer or multi-layer mode.

Preferably, the collection point through hole is a round hole or a square hole.

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

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

Drawings

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

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

fig. 3 is a schematic view of the bottom structure of the standard resistor body of the present invention.

In the figure: 1. a standard resistor body; 101. connecting blocks; 102. a manganese-copper alloy strip; 103. an overload threaded hole; 104. collecting a threaded hole; 105. fixing the threaded hole; 2. an overload column; 3. an overload binding post; 4. collecting binding posts; 5. a metal shielding layer; 501. a collection point through hole; 502. a side through hole; 6. a high temperature insulating base plate; 601. mounting a through hole; 7. installing a bolt; 8. 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. 1-3, a U-shaped high-precision direct current standard resistor, including standard resistor body 1, the top threaded connection of standard resistor body 1 has overload cylinder 2, standard resistor body 1 includes two connecting blocks 101, connecting block 101 is brass or red copper material, the right side of two connecting blocks 101 utilizes high-frequency induction silver brazing welding to connect as an organic whole through manganin alloy area 102, manganin alloy area 102 is the U-shaped, manganin alloy area 102 is the installation of individual layer or multilayer, overload screw hole 103 has been seted up at the top of connecting block 101, the collection screw hole 104 that is located overload screw hole 103 right side has been seted up at the top of connecting block 101, fixed screw hole 105 that is located overload screw hole 103 right side has been seted up to the bottom of connecting block 101, the bottom threaded connection of overload cylinder 2 is on overload screw hole 103.

The top threaded connection of the overload cylinder 2 has the overload terminal 3, the metal shielding layer 5 is sleeved on the outer side of the standard resistor body 1, the top of the metal shielding layer 5 is provided with a collection point through hole 501 which is positioned on the outer side of the collection terminal 4, the collection point through hole 501 is a round hole or a square hole, the standard resistor can rapidly self-radiate and ventilate when in use, the bottom end of the collection terminal 4 penetrates through the collection point through hole 501 and is in threaded connection with the inner surface of the collection threaded hole 104, the front and the back of the metal shielding layer 5 are both provided with side through holes 502, two symmetrical collection terminals 4 are arranged above the metal shielding layer 5, the bottom of the standard resistor body 1 is sleeved with a high-temperature insulating bottom plate 6, the standard resistor body 1, the overload cylinder 2, the metal shielding layer 5 and the high-temperature insulating bottom plate 6 are all in an embedded tight fit, The standard resistor has the advantages of attractive appearance, improvement on vibration resistance, impact resistance and anti-loosening capability of the standard resistor, reduction in external magnetic field interference, guarantee of measurement precision and stability, and capability of being quickly installed and used at will when used by a user.

Equal threaded connection in the front and the back of metallic shield layer 5 has construction bolt 7, and the one end that construction bolt 7 is close to metallic shield layer 5 runs through side through-hole 502, and the bottom of high temperature insulation bottom plate 6 is provided with four anti-skidding callus on the sole 8, and construction through-hole 601 has been seted up to the bottom of high temperature insulation bottom plate 6, and installation through-hole 601 and threaded connection are run through on the internal surface of fixed screw hole 105 in the top of anti-skidding callus on the sole 8.

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

1. The utility model provides a U type high accuracy direct current standard resistance, includes standard resistance body (1), its characterized in that, the top threaded connection of standard resistance body (1) has overload cylinder (2), the top threaded connection who transships cylinder (2) has overload terminal (3), metallic shield layer (5) have been cup jointed in the outside of standard resistance body (1), the top of metallic shield layer (5) is provided with two collection terminal (4) of symmetry, high temperature insulation bottom plate (6) have been cup jointed to the bottom of standard resistance body (1), the equal threaded connection in front and the back of metallic shield layer (5) has construction bolt (7), the bottom of high temperature insulation bottom plate (6) is provided with four anti-skidding callus on the sole (8).

2. The U-shaped high-precision direct current standard resistor according to claim 1, wherein the standard resistor body (1) comprises two connecting blocks (101), the right sides of the two connecting blocks (101) are connected into a whole by a manganin alloy belt (102) through high-frequency induction silver brazing welding, the manganin alloy belt (102) is U-shaped, an overload threaded hole (103) is formed in the top of each connecting block (101), a collection threaded hole (104) located on the right side of the overload threaded hole (103) is formed in the top of each connecting block (101), a fixing threaded hole (105) located on the right side of the overload threaded hole (103) is formed in the bottom of each connecting block (101), and the bottom of each overload column (2) is in threaded connection with the inner surface of the overload threaded hole (103).

3. The U-shaped high-precision direct current standard resistor according to claim 2, wherein a collection point through hole (501) located outside the collection terminal (4) is formed in the top of the metal shielding layer (5), the bottom end of the collection terminal (4) penetrates through the collection point through hole (501) and is in threaded connection with the inner surface of the collection threaded hole (104), and side through holes (502) are formed in the front surface and the back surface of the metal shielding layer (5).

4. A U-shaped high-precision direct current standard resistor as claimed in claim 3, wherein one end of the mounting bolt (7) close to the metal shielding layer (5) penetrates through the side through hole (502).

5. The U-shaped high-precision direct current standard resistor as claimed in claim 2, wherein a mounting through hole (601) is formed in the bottom of the high-temperature insulating base plate (6), and the top of the anti-skid foot pad (8) penetrates through the mounting through hole (601) and is in threaded connection with the inner surface of the fixing threaded hole (105).

6. The U-shaped high-precision direct current standard resistor as claimed in claim 1, wherein the standard resistor body (1), the overload column (2), the metal shielding layer (5) and the high-temperature insulating bottom plate (6) are all in embedded tight fit.

7. The U-shaped high-precision direct current standard resistor as claimed in claim 2, wherein the connecting block (101) is made of brass or red copper, and the manganese-copper alloy strip (102) is mounted in a single layer or multiple layers.

8. The U-shaped high-precision direct current standard resistor as claimed in claim 3, wherein the collection point through hole (501) is a round hole or a square hole.