CN216870641U - Manganese-copper current divider with adjustable resistance value - Google Patents
Manganese-copper current divider with adjustable resistance value Download PDFInfo
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- CN216870641U CN216870641U CN202220309465.5U CN202220309465U CN216870641U CN 216870641 U CN216870641 U CN 216870641U CN 202220309465 U CN202220309465 U CN 202220309465U CN 216870641 U CN216870641 U CN 216870641U
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- resistance value
- shunt
- adjustable resistance
- sampling column
- threaded hole
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Abstract
The utility model discloses a manganin shunt with adjustable resistance value, which is characterized in that a threaded hole is formed in a resistor body, and a second sampling column in threaded fit with the threaded hole is arranged in the threaded hole, so that the contact area between the second sampling column and the resistor body can be adjusted by rotating the second sampling column, the resistance value of the shunt is adjusted, and the requirement of multiple purposes of the shunt is met. And the resistance value adjusting structure is simple, the implementation is facilitated, the operation difficulty of workers is greatly reduced, and the value adjusting efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of electrical appliance measuring elements, in particular to a manganese-copper shunt with an adjustable resistance value.
Background
The traditional manganin shunt has complex operation and low efficiency in the resistance value adjustment of products, and needs a person with considerable experience to operate.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a manganin shunt with an adjustable resistance value, aiming at optimizing the operation mode of shunt value adjustment and improving the value adjustment efficiency.
In order to achieve the aim, the manganin shunt with the adjustable resistance value is provided by the utility model, the middle part of the manganin shunt is a resistor body, two ends of the manganin shunt are electric conductors, and one side of the electric conductor, which is close to the resistor body, is provided with a first sampling column for collecting voltage/current; the resistor body is provided with a threaded hole, a second sampling column is inserted in the threaded hole, and the second sampling column is screwed in the threaded hole through threads.
Optionally, the thickness of the resistor is 1mm or more.
Optionally, the cross-sectional area of the first sampling post occupies 3/5 of the area of the upper end face of the resistor body.
Optionally, the first sampling column is vertically arranged on the back surface of the conductor, and the end of the conductor is bent by 90 degrees to form a welding terminal which is consistent and parallel to the first sampling column in orientation.
Optionally, two slots are provided on the solder terminal.
Optionally, a threaded guide post is vertically arranged on the front surface of the conductor.
According to the manganin shunt with the adjustable resistance value, the resistor body is provided with the threaded hole, and the second sampling column in threaded fit with the threaded hole is arranged in the threaded hole, so that the contact area between the second sampling column and the resistor body can be adjusted by rotating the second sampling column, the resistance value of the shunt is adjusted, and the requirement that the shunt has multiple purposes is met. And the resistance value adjusting structure is simple, the implementation is facilitated, the operation difficulty of workers is greatly reduced, and the value adjusting efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a side view of one embodiment of an adjustable resistance manganin shunt of the present invention;
FIG. 2 is a cross-sectional view of one embodiment of the manganese copper shunt with adjustable resistance according to the present invention;
FIG. 3 is a schematic diagram of the back side of an embodiment of the manganese copper shunt with adjustable resistance according to the present invention;
the objects, features and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
As shown in fig. 1-2, the present invention provides a manganin shunt with adjustable resistance, the middle part of the manganin shunt is a resistor 100 made of manganin alloy, the two ends of the manganin shunt are conductive bodies 200 made of red copper or brass, the resistor 100 and the conductive bodies 200 are welded together by electron beams, the conductive bodies 200 are used as current input and output ends, and a first sampling column 201 for collecting voltage/current is arranged on one side of the conductive bodies 200 close to the resistor 100. The resistor 100 is provided with a threaded hole 100a, a second sampling column 101 is inserted into the threaded hole 100a, and an external thread is provided on the outer periphery of the insertion part of the second sampling column 101 and is locked to the threaded hole 100a by the external thread and an internal thread in the threaded hole 100a in a suspension manner.
Specifically, in the present embodiment, in order to ensure that the resistive element 100 can effectively fix the second sampling column 101, the thickness h of the resistive element 100 is at least 1mm, so that a screw can be provided in the screw hole 100a, and the second sampling column 101 is screwed and locked.
In the present embodiment, the size of the threaded hole 100a is designed to account for 3/5 of the volume of the resistor body 100, that is, the cross-sectional area of the threaded hole 100a is 3/5 of the cross-sectional area of the entire resistor body 100.
When the resistance value of the shunt needs to be adjusted, the second sampling column 101 can be rotated, so that the second sampling column 101 moves in the threaded hole 100a, the contact length of the second sampling column 101 and the resistor body 100 in the thickness direction of the resistor body 100 is changed, the contact area of the second sampling column 101 and the resistor body 100 is changed, and further the resistance value is changed. Specifically, when the second sampling post 101 is rotated downward, the contact area of the second sampling post 101 with the resistive body 100 can be increased, thereby reducing the resistance value; when the second sampling column 101 is rotated upward, the contact area between the second sampling column 101 and the resistor 100 is reduced, and the resistance value is increased, thereby achieving multiple purposes.
Compared with the prior art, the resistor body 100 is provided with the threaded hole 100a, and the second sampling column 101 in threaded fit with the threaded hole 100a is arranged in the threaded hole 100a, so that the contact area of the second sampling column 101 and the resistor body 100 can be adjusted by rotating the second sampling column 101, the resistance value of the shunt is adjusted, and the requirement that the shunt has multiple purposes is met. And the resistance value adjusting structure is simple, the implementation is facilitated, the operation difficulty of workers is greatly reduced, and the value adjusting efficiency is improved.
As shown in fig. 1 to 3, in the present embodiment, a first sampling column 201 is provided to hang on the back surface of a conductive body 200, and an end portion of the conductive body 200 is bent by 90 degrees to form a soldered terminal 200a aligned with and parallel to the orientation of the first sampling column 201. During testing, the shunt can be directly inserted on the sampling circuit board, so that the shunt can be welded more reliably and firmly, the problems of false welding and missing welding are avoided, and the operation of operators is more convenient; meanwhile, the welding terminal 200a is bent to be consistent and parallel with the orientation of the first sampling column 201, when the manganin shunt is inserted, the first sampling column 201 can be synchronously inserted into the jack of the sampling circuit board, the sampling column 201 is prevented from being exposed, and the sampling column 201 is prevented from being broken when being applied under severe conditions.
In the present embodiment, two slots 200b are provided on the welding terminal 200a of the conductor 200, so that when the welding terminal 200a is welded, the solder can flow to the inner side of the welding terminal 200a through the slots 200b, the welding effect is enhanced, and the probability of false welding and missing welding is further reduced.
In the present embodiment, a threaded guide post 202 is suspended on the front surface of the conductive body 200, and specifically, the threaded guide post 202 may be disposed on the conductive body 200 by welding, screwing, or interference fit with a socket.
Therefore, during testing, the shunt can be directly inserted into the sampling circuit board to carry out input and output of current, and can also be connected to the threaded guide pillar 202 through a connecting wire to carry out input and output of current, so that the problem that the current input and output structure of the shunt is too single is effectively avoided.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the technical solutions of the present invention, which are made by using the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. The manganin shunt with the adjustable resistance value is characterized in that the middle part of the manganin shunt is a resistor body, two ends of the manganin shunt are provided with electric conductors, and one side of each electric conductor, which is close to the resistor body, is provided with a first sampling column for collecting voltage/current; the sampling device is characterized in that a threaded hole is formed in the resistor body, a second sampling column is inserted into the threaded hole, and the second sampling column is screwed in the threaded hole through threads.
2. The manganin shunt with the adjustable resistance value according to claim 1, wherein the thickness of the resistor body is greater than or equal to 1 mm.
3. The manganin shunt with the adjustable resistance value according to claim 2, wherein the volume of the threaded hole accounts for 3/5 of the whole volume of the resistor body.
4. The manganin shunt with the adjustable resistance value according to claim 1, wherein the first sampling column is vertically arranged on the back surface of the electric conductor, and the end part of the electric conductor is bent by 90 degrees to form a welding terminal which is consistent and parallel to the orientation of the first sampling column.
5. The manganin shunt with adjustable resistance of claim 4, wherein two slots are formed in the weld terminals.
6. The manganin shunt with the adjustable resistance value according to any one of claims 1 to 5, wherein a threaded guide post is hung on the front surface of the electric conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220309465.5U CN216870641U (en) | 2022-02-16 | 2022-02-16 | Manganese-copper current divider with adjustable resistance value |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220309465.5U CN216870641U (en) | 2022-02-16 | 2022-02-16 | Manganese-copper current divider with adjustable resistance value |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216870641U true CN216870641U (en) | 2022-07-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220309465.5U Active CN216870641U (en) | 2022-02-16 | 2022-02-16 | Manganese-copper current divider with adjustable resistance value |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216870641U (en) |
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2022
- 2022-02-16 CN CN202220309465.5U patent/CN216870641U/en active Active
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