Four-terminal alloy resistor

Abstract

The utility model discloses a four-terminal alloy resistor, which comprises a resistor body, two ends of the resistor body are respectively sunken downwards to form groove bodies, convex structures are formed in the groove bodies, two ends of the resistor body are respectively provided with U-shaped pin sheets, the upper ends of the pin sheets are provided with first bending parts, and the lower ends of the pin sheets are provided with second bending parts. The first bending part is clamped in the groove body, a clamping groove matched with the protruding structure is formed in the first bending part, and the protruding structure is clamped in the clamping groove. The resistor solves the problem that in a resistor in the prior art, electrodes at the two ends of a resistor body need to be welded to the resistor body, and due to the fact that the end portions of the electrodes are bent inwards, the back faces of the contact edges of the resistor body and the electrodes are difficult to weld.

Description

TECHNICAL FIELD

[0001] The utility model relates to alloy resistance, specifically, four terminal alloy resistance. BACKGROUND

[0002] The alloy chip resistance is used as the current carrier, has the advantages such as resistance precision and temperature stability, is mainly applied to the sampling of current in circuit, the current changing in feedback circuit, to further control or influence the change of current. For example, the Chinese patent with patent No. CN100498986C provides a chip resistor with low resistance value and its manufacturing method, its purpose is, in the chip resistor with the resistance body formed by high resistance metal and low resistance metal into cuboid, and the connecting terminal electrode of cuboid long direction both ends arranged in the resistance body, can reduce the resistance value without causing the increase of resistance temperature coefficient and weight. Such as the resistor in the prior art, the electrode between the resistance body both ends needs to be welded, due to the inward bending of electrode end, leading to the difficulty of welding the back surface of resistance body and electrode contact edge. SUMMARY

[0003] The utility model discloses a four terminal alloy resistance, solve the problem that the electrode between the resistance body both ends needs to be welded in the resistor in the prior art, due to the inward bending of electrode end, leading to the difficulty of welding the back surface of resistance body and electrode contact edge.

[0004] In order to realize the above-mentioned purpose, the utility model provides a four terminal alloy resistance, the four terminal alloy resistance includes resistance body, the both ends of resistance body are recessed respectively and form groove, the protruding structure is formed in the groove, the pin sheet of U type is arranged respectively at the both ends of resistance body, the first bending part is formed on the upper end of pin sheet, the first bending part is clamped in the groove, the clamping groove matched with the protruding structure is formed on the first bending part, the protruding structure is clamped in the clamping groove.

[0005] Preferably, the first edge of the first bending part in contact with the resistance body is welded and fixed.

[0006] Preferably, the second edge of the protruding structure in contact with the clamping groove is welded and fixed.

[0007] Preferably, the lower end of the pin sheet forms a second bending part, and a cut seam is formed on the pin sheet and the second bending part, the cut seam divides the second bending part into a voltage sampling pin and a current sampling pin.

[0008] Preferably, a fine adjustment groove is formed on the side surface of the resistance body.

[0009] Preferably, the pin sheet is made of copper.

[0010] The electric resistance body is a copper-manganese-tin alloy, a manganese-copper alloy or a Karma alloy.

[0011] Beneficial effects: The four-terminal alloy resistor provided by the utility model makes the electric resistance body and the pin piece be able to be tightly clamped, meanwhile, the first bending part is welded and fixed with the first edge of the electric resistance body in contact, the second edge of the protruding structure in contact with the clamping groove is welded and fixed, the upper contact part of the electric resistance body and the pin piece is welded, the welding operation is facilitated, and the connection strength can be ensured.

[0012] Other features and advantages of the utility model will be described in detail in the following specific implementation manner part. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings are used to provide further understanding of the utility model and constitute a part of the specification, and are used to explain the utility model together with the following specific implementation manner, but do not constitute the limitation to the utility model.In the drawings,

[0014] Figure 1 It is the structure diagram of the four-terminal alloy resistor provided by the utility model,

[0015] Figure 2 It is the split diagram of the four-terminal alloy resistor provided by the utility model.

[0016] EXPLANATION OF REFERENCE NUMERALS

[0017] 1-electric resistance body;2-fine adjustment groove;3-pin piece;4-first bending part;5-voltage sampling pin;6-current sampling pin;7-cutting seam;8-clamping groove;9-groove;10-protruding structure;11-first edge;12-second edge. SPECIFIC IMPLEMENTATION

[0018] The specific implementation of the utility model is described in detail in the following in combination with the drawings.It should be understood that the specific implementation described herein is only used to illustrate and explain the utility model, and is not used to limit the utility model.

[0019] As Figure 1 And 2The utility model provides a kind of four-terminal alloy resistance, the four-terminal alloy resistance includes resistance body 1, the two ends of resistance body 1 are respectively downward recessed to form with groove 9, the protruding structure 10 is formed in groove 9, the two ends of resistance body 1 are respectively provided with the pin sheet 3 of U type, the upper end of pin sheet 3 is formed with first bending part 4, the first bending part 4 is engaged in groove 9, the first bending part 4 is formed with the engaging slot 8 matched with protruding structure 10, the protruding structure 10 is engaged in engaging slot 8;The first edge 11 of first bending part 4 and resistance body 1 contact is welded fixed;The second edge 12 of protruding structure 10 and engaging slot 8 contact is welded fixed.The four-terminal alloy resistance provided by the utility model makes resistance body and pin sheet can be closely engaged, and simultaneously, the first edge of first bending part and the resistance body contact is welded fixed, the second edge of protruding structure and engaging slot contact is welded fixed, and the welding of the upper contact part of resistance body and pin sheet can ensure connection strength, facilitate welding operation.

[0020] In a preferred embodiment of the utility model, the lower end of the pin sheet 3 is formed with a second bending part, the pin sheet 3 and the second bending part are formed with a cut seam 7, and the cut seam 7 divides the second bending part into a voltage sampling pin 5 and a current sampling pin 6. By providing a cut seam on the pin sheet, the pin sheet is divided into two parts, the pins for current input and voltage input are separated, and interference of current on voltage sampling during input is avoided.

[0021] In a preferred embodiment of the utility model, the side surface of the resistance body 1 is formed with a fine adjustment groove 2. By providing the fine adjustment groove 2, the resistance value of the resistance body can be fine adjusted to reach the rated value.

[0022] In a preferred embodiment of the utility model, the pin sheet 3 is made of copper material.

[0023] The resistance body 1 is made of copper-manganese-tin alloy, manganese-copper alloy or Karma alloy (Karma alloy).

[0024] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the specific details in the above embodiments, and various simple modifications can be made to the technical solutions of the utility model within the technical concept of the utility model, and these simple modifications all belong to the protection scope of the utility model.

[0025] In addition, it should be noted that various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the utility model will not describe various possible combination manners again.

[0026] In addition, various different embodiments of the present application can be combined arbitrarily, as long as they do not violate the spirit of the present application, and should be considered as disclosed by the present application.

Claims

1. A four-terminal alloy resistor characterized in that, The four-terminal alloy resistor comprises a resistor body (1), two ends of the resistor body (1) are respectively recessed to form a groove (9), a protruding structure (10) is formed in the groove (9), a U-shaped pin piece (3) is arranged at each end of the resistor body (1), a first bending part (4) is formed at the upper end of the pin piece (3), the first bending part (4) is clamped in the groove (9), a clamping groove (8) matched with the protruding structure (10) is formed on the first bending part (4), and the protruding structure (10) is clamped in the clamping groove (8).

2. The four-terminal alloy resistor of claim 1, wherein A first edge (11) where the first bending part (4) contacts the resistor body (1) is welded and fixed.

3. The four-terminal alloy resistor of claim 2, wherein A second edge (12) where the protruding structure (10) contacts the clamping groove (8) is welded and fixed.

4. The four-terminal alloy resistor of claim 3, wherein A second bending part is formed at the lower end of the pin piece (3), a cut seam (7) is formed on the pin piece (3) and the second bending part, and the second bending part is divided into a voltage sampling pin (5) and a current sampling pin (6) by the cut seam (7).

5. The four-terminal alloy resistor of claim 4, wherein A fine adjustment groove (2) is formed on the side of the resistor body (1).

6. The four-terminal alloy resistor of claim 5, wherein, The pin piece (3) is made of copper; The resistor body (1) is made of copper-manganese-tin alloy, manganese-copper alloy or Karma alloy.

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