CN218214831U - Alloy resistor assembly - Google Patents
Alloy resistor assembly Download PDFInfo
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- CN218214831U CN218214831U CN202222417065.9U CN202222417065U CN218214831U CN 218214831 U CN218214831 U CN 218214831U CN 202222417065 U CN202222417065 U CN 202222417065U CN 218214831 U CN218214831 U CN 218214831U
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Abstract
The utility model provides an alloy resistance assembly adopts split type design, separates out from the resistive element through the mounting structure with alloy resistance, sets up on a box body, and the box body adopts the mode of welding or card box with the sampling circuit board to fix, from this, after fixing the box body, can be with the resistive element lock in the box body to realize the electrical property cooperation of resistive element and sampling circuit board through the box body. Because the resistor body does not need to be welded, various hidden dangers of a welding type resistor can be avoided, and the use precision is more reliable; and the resistor body and the box body adopt the buckling fit, so that the disassembly and the assembly are convenient, and the maintenance is facilitated.
Description
Technical Field
The utility model relates to a technical field of alloy resistance especially relates to an alloy resistance subassembly.
Background
One of the resistors is a resistor made of alloy, which is generally called a current detection resistor or an alloy resistor, and a circuit engineer can use the current detection resistor or the alloy resistor to sample large current in a circuit, so the current detection resistor is also called alloy sampling. As a current carrier, the resistance value is accurate, the temperature stability and the product safety and stability are obviously higher than those of a common ceramic resistor, and the alloy resistor is widely applied due to the functional characteristics of the alloy resistor, particularly in the field of new energy resources such as automobile instruments and electronic instruments.
At present, alloy resistors on the market are all welding type resistors, and are required to be welded on a sampling circuit board through soldering tin during application. The welding has various hidden dangers in the operation process, such as false welding, missing welding, excessive/insufficient soldering tin and the like, and the problems can generate resistance value deviation on a processed product, influence the inaccurate scale display of the instrument and increase a plurality of uncertain factors for the subsequent process.
Moreover, the welding type resistor is inconvenient to disassemble under the condition of damage, and the circuit board can be damaged by carelessness and only needs to be processed by professional personnel, so that the maintenance cost is high.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model provides an alloy resistance assembly for solve the various hidden dangers that welding type resistance exists, and make things convenient for the dismouting, do benefit to the maintenance.
The technical scheme of the utility model as follows:
an alloy resistor component comprises a box body and a resistor body detachably arranged in the box body; the resistor body comprises a columnar plastic package colloid and a resistor inner core packaged in the plastic package colloid, wherein two ends of the resistor inner core are provided with electric conductors, and the two electric conductors extend out from the inside of the plastic package colloid;
the box body is provided with a groove structure for mounting the resistor body, two ends of the groove structure are provided with electric shrapnels, and when the resistor body is mounted on the box body, two ends of the resistor body are in electric contact with the electric shrapnels;
the box body is externally provided with external contact columns in one-to-one correspondence with the electric shrapnels, and one ends of the external contact columns extend towards the inside of the groove structure and are connected with the corresponding electric shrapnels.
Optionally, the plastic package colloid is wrapped by a shielding sleeve.
Optionally, the shielding sleeve is an aluminum shell.
Optionally, the resistor inner core is spiral and is formed by winding a round wire or a flat wire made of an alloy material, or by winding a plurality of parallel round wires or flat wires.
Optionally, a contact spring is disposed on one of the electric spring pieces.
Alternatively, the resistor body has a cylindrical shape.
The beneficial effects of the utility model reside in that:
the utility model provides an alloy resistance subassembly adopts split type design, separates out from the resistive element through the mounting structure with alloy resistance, sets up on a box body, and the box body adopts the mode of welding or card box to fix with the sampling circuit board, from this, after fixing the box body, can be with the resistive element lock in the box body to realize the resistive element and the electric property cooperation of sampling circuit board through the box body. Because the resistor body does not need to be welded, various hidden dangers existing in the welding type resistor can be avoided, and the use precision is more reliable;
and the resistive element adopts the lock cooperation with the box body, makes things convenient for the dismouting, does benefit to the maintenance.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic application diagram of an embodiment of the present invention.
Fig. 3 is a schematic diagram of two different implementation structures of the resistor core according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-2, the present invention provides an alloy resistor assembly 10, which includes a box 11 and a resistor 12. The resistor 12 is similar to a cylindrical battery and includes a cylindrical plastic package colloid 121 and a resistor core 122 packaged in the plastic package colloid 121, wherein two ends of the resistor core 122 are provided with conductors 122a, and the two conductors 122a extend outwards from the plastic package colloid 121. The case 11 is similar to a battery box and has a groove structure 11a for mounting the resistor, wherein electrical springs (not shown) are disposed at two ends of the groove structure 11a, and when the resistor 12 is mounted on the case 11, two ends of the resistor 12 are in electrical contact with the electrical springs. External contact columns (111, 112) which are in one-to-one correspondence with the electric shrapnels are arranged outside the box body 11, and one ends of the external contact columns (111, 112) extend into the groove structure 11a and are connected with the corresponding electric shrapnels.
With reference to fig. 2, in application, the external contact posts (111, 112) at the two ends of the case 11 are firstly clamped to the clamping seats (21, 22) fixed on the sampling circuit board 20, so that the case 11 and the sampling circuit board 20 are electrically connected, and the case 11 is fixed. Then, the resistor 12 is engaged with the groove structure 11a of the case 11, thereby completing the mounting of the alloy resistor assembly 10. When the sampling resistor with different resistance values needs to be replaced, only the resistor body 12 needs to be pulled out from the box body 11, and the resistor body 12 with a new resistance value needs to be replaced without detaching the box body 11.
Compared with the prior art, the utility model provides an alloy resistance subassembly 10 adopts split type design, separates out from the resistive element through the mounting structure with alloy resistance, sets up on a box body, and the box body adopts the mode of welding or card box with the sampling circuit board to fix, from this, after fixing the box body, can be in the box body with the resistive element lock to realize the resistive element through the box body and the electric property cooperation of sampling circuit board. Because the resistor body does not need to be welded, various hidden dangers existing in the welding type resistor can be avoided, and the use precision is more reliable;
and the resistive element adopts the lock cooperation with the box body, makes things convenient for the dismouting, does benefit to the maintenance.
The embodiment of the utility model provides an in, what plastic package colloid 121 adopted is the molding glue that has insulating and heat dissipation dual effect, and resistance inner core 122 accessible plastic package colloid in the resistive element 12 dispels the heat to the outside, and plastic package colloid 121 also can play outstanding insulation protection effect to the resistance inner core.
In the embodiment of the present invention, the shielding sleeve 123 wraps the outside of the plastic package colloid 121, so that the shielding interference effect of the resistor 12 is more excellent. Specifically, the shielding sleeve 123 is an aluminum shell, and has a good shielding effect.
In the embodiment of the present invention, as shown in fig. 3 (b), the resistor inner core 122 is spiral and is formed by winding a round wire or a flat wire made of an alloy material, so as to have a certain anti-interference effect. Or, as shown in fig. 3 (a), a plurality of parallel round wires or flat wires are wound, and through the parallel superposition mode, the overcurrent capacity is increased, the resistance value is reduced, and the resistance value can be smaller.
In the embodiment of the present invention, a contact spring 113 is disposed on one of the electric spring pieces. When the resistor 12 is fastened to the case 11, the contact spring 113 may be pressed, and the effective contact of the resistor with the case is ensured by the reaction force of the contact spring 113.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. An alloy resistor component is characterized by comprising a box body and a resistor body detachably arranged in the box body; the resistor body comprises a columnar plastic package colloid and a resistor inner core packaged in the plastic package colloid, wherein two ends of the resistor inner core are provided with electric conductors, and the two electric conductors extend outwards from the inside of the plastic package colloid;
the box body is provided with a groove structure for mounting the resistor body, two ends of the groove structure are provided with electric shrapnels, and when the resistor body is mounted on the box body, two ends of the resistor body are in electric contact with the electric shrapnels;
the box body is externally provided with external contact columns in one-to-one correspondence with the electric shrapnels, and one ends of the external contact columns extend towards the inside of the groove structure and are connected with the corresponding electric shrapnels.
2. The alloy resistor assembly of claim 1, wherein the plastic encapsulant is wrapped with a shielding sleeve.
3. The alloy resistor assembly of claim 2 wherein the shielding sleeve is an aluminum shell.
4. The alloy resistor assembly of claim 1 wherein the resistor core is helical and is formed by winding a round or flat wire or a plurality of parallel round or flat wires made of alloy material.
5. The alloy resistor assembly of claim 1 wherein a contact spring is disposed on one of the electrical springs.
6. The alloy resistor assembly of any one of claims 1-5, wherein the resistor body is cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222417065.9U CN218214831U (en) | 2022-09-13 | 2022-09-13 | Alloy resistor assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222417065.9U CN218214831U (en) | 2022-09-13 | 2022-09-13 | Alloy resistor assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218214831U true CN218214831U (en) | 2023-01-03 |
Family
ID=84634199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222417065.9U Active CN218214831U (en) | 2022-09-13 | 2022-09-13 | Alloy resistor assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218214831U (en) |
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2022
- 2022-09-13 CN CN202222417065.9U patent/CN218214831U/en active Active
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