Alloy resistor body

Abstract

The utility model discloses an alloy resistor body, the middle position of the alloy resistor body is stamped to form a hole structure, and the hole wall of the hole structure comprises a first hole wall, a second hole wall, a third hole wall and a fourth hole wall which are connected in sequence; and at least parts of the first hole wall, the second hole wall, the third hole wall and the fourth hole wall are sunken towards the middle position. A hole structure is formed in the middle of an alloy resistor body through stamping, and the hole wall of the hole structure comprises a first hole wall, a second hole wall, a third hole wall and a fourth hole wall which are connected in sequence; on one hand, liquid can flow conveniently during injection molding; and on the other hand, as at least parts of the first hole wall, the second hole wall, the third hole wall and the fourth hole wall of the hole structure are sunken towards the middle position, the movement of glue can be limited after injection molding, so that the problem that the injection molding difficulty is increased along with the reduction of the size of the metal plate resistor is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic technical field especially relates to an alloy resistance body. BACKGROUND

[0002] The alloy resistor of prior art is usually made by covering thermoplastic resin on metal plate through injection molding. With the demand of miniaturization of electronic equipment, the resistor is also required to be miniaturized. However, with the decrease of the size of metal plate resistor, the difficulty of injection molding increases, and it is difficult to realize further miniaturization.

[0003] The above content is only used to assist understanding the technical scheme of the utility model, and does not represent admitting the above content is prior art. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide an alloy resistance body, which aims to solve the problem of increasing difficulty of injection molding and difficulty in realizing further miniaturization with the decrease of the size of metal plate resistor in the prior art.

[0005] To achieve the above purpose, the utility model provides an alloy resistance body, a hole structure is punched in the middle position of the alloy resistance body, the hole wall of the hole structure comprises first hole wall, second hole wall, third hole wall and fourth hole wall connected in turn.

[0006] At least part of the first hole wall, the second hole wall, the third hole wall and the fourth hole wall is recessed towards the middle position.

[0007] Preferably, in the alloy resistance body, the first hole wall, the second hole wall, the third hole wall and the fourth hole wall are respectively first concave arc, second concave arc, third concave arc and fourth concave arc recessed towards the middle position.

[0008] Preferably, in the alloy resistance body, the alloy resistance body has contact terminals at the two ends along the transverse direction respectively.

[0009] The alloy resistance body is recessed inward to form a notch structure near the contact terminal.

[0010] Preferably, in the alloy resistance body, the notch structure is arranged along the longitudinal direction.

[0011] The notch structure comprises a straight cylinder segment and an arc segment along the longitudinal direction, the straight cylinder segment is arranged inwardly from the edge of the alloy resistance body, the arc segment is arranged in connection with the straight cylinder segment, and the edge of the arc segment is smoothly connected with the edge of the straight cylinder segment.

[0012] Preferably, in the alloy resistance body, the edge of the arc segment is tangentially arranged with the edge of the straight cylinder segment.

[0013] Preferably, in the alloy resistor body, a first notch and a second notch are respectively provided on two ends of the alloy resistor body close to the corresponding contact terminals.

[0014] Preferably, in the alloy resistor body, the first notch and the second notch are provided on different sides of the alloy resistor body.

[0015] Preferably, in the alloy resistor body, each contact terminal comprises a voltage connection contact point and a current connection contact point arranged in a longitudinal direction.

[0016] Preferably, in the alloy resistor body, the alloy resistor body has a first end and a second end located at opposite ends;

[0017] The first notch is provided at the current connection contact point close to the first end; and the second notch is provided at the voltage connection contact point close to the second end.

[0018] Preferably, in the alloy resistor body, the voltage connection contact point and the current connection contact point of each contact terminal are arranged in a transverse direction and extend outward.

[0019] The utility model at least has following beneficial effects:

[0020] The utility model discloses a hole structure is formed at the middle position of alloy resistor body by stamping, the hole wall of hole structure includes the first hole wall, second hole wall, third hole wall and fourth hole wall that connect in proper order, at least part of first hole wall, second hole wall, third hole wall and fourth hole wall are arranged to recess towards the middle position, so on one hand can be convenient for liquid flow when injection molding, on the other hand, at least part of first hole wall, second hole wall, third hole wall and fourth hole wall of hole structure are arranged to recess towards the middle position, can limit glue movement after injection molding, so solve the problem that the difficulty of injection molding increases along with the size reduction of metal plate resistor.

[0021] Further, by stamping a hole structure at the middle position of alloy resistor body, the flowability of resin during injection molding can be improved, so that alloy resistors of smaller size and higher precision can be produced, the miniaturization of metal plate resistors can be realized, and the precision and quality of injection molding are improved.

[0022] Further, at least part of the first hole wall, the second hole wall, the third hole wall and the fourth hole wall of the hole structure are recessed towards the middle position, which can increase the contact area of the glue after injection molding, significantly enhance the adhesion and packaging firmness; meanwhile, the recessed arrangement of at least part of the first hole wall, the second hole wall, the third hole wall and the fourth hole wall towards the middle position can also guide the glue flow, ensure uniform distribution and reduce bubble generation, reduce internal stress after packaging, reduce the risk of deformation, and improve overall reliability. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A schematic diagram of an embodiment of the alloy resistor provided by the utility model.

[0024] Serial number Name Serial number Name 100 Alloy resistor body 22 Second notch 1 Hole structure 211,221 Straight cylinder segment 11 First hole wall 212,222 Arc segment 12 Second hole wall 3 First end 13 Third hole wall 4 Second end 14 Fourth hole wall 31,41 Voltage connection contact point 2 Notch structure 32,42 Current connection contact point 21 First notch

[0025] The utility model discloses the realization, function characteristics and advantages will be combined with embodiment, and reference is made to the further description of the drawings. DETAILED DESCRIPTION

[0026] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, and obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiment. The utility model will be described in detail below with reference to the drawings and in combination with the embodiment. It should be noted that the embodiment in the utility model and the features in the embodiment can be combined with each other without conflict.

[0027] The term "and / or" in the embodiment of the utility model describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can mean that there are three cases of A alone, A and B together and B alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0028] It should be noted that the terms "first", "second" and the like in the specification and claims of the utility model and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence.

[0029] The term "a plurality of" in the embodiment of the utility model means two or more, and other quantifiers are similar.

[0030] In the utility model, the orientation words such as "upper", "lower", "top" and "bottom" used without the opposite description are generally for the direction shown in the drawings, or for the vertical, perpendicular or gravity direction of the component itself; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer of the contour of each component itself, but the above orientation words are not used to limit the utility model.

[0031] The utility model provides a kind of alloy resistor, such asFigure 1 As shown, a hole structure 1 is punched at the middle position of the alloy resistor body 100, the hole wall of the hole structure 1 comprises a first hole wall 11, a second hole wall 12, a third hole wall 13 and a fourth hole wall 14 connected in sequence; at least part of the first hole wall 11, the second hole wall 12, the third hole wall 13 and the fourth hole wall 14 are recessed towards the middle position.

[0032] The existing alloy resistor is usually made by covering the thermoplastic resin on the metal plate through injection molding. With the demand for miniaturization of electronic equipment, the resistor is also required to be miniaturized. However, with the decrease of the size of the metal plate resistor, the difficulty of injection molding increases, and it is difficult to realize further miniaturization.

[0033] The utility model discloses a hole structure 1 is punched at the middle position of alloy resistor body 100, the hole wall of hole structure 1 includes the first hole wall 11, the second hole wall 12, the third hole wall 13 and the fourth hole wall 14 connected in proper order, at least part of the first hole wall 11, the second hole wall 12, the third hole wall 13 and the fourth hole wall 14 are recessed towards the middle position, so on the one hand, it is convenient for liquid flow when injection molding, on the other hand, at least part of the first hole wall 11, the second hole wall 12, the third hole wall 13 and the fourth hole wall 14 of hole structure 1 are recessed towards the middle position, which can limit the movement of glue after injection molding, so as to solve the problem that the difficulty of injection molding increases with the decrease of the size of the metal plate resistor.

[0034] Further, by punching a hole structure 1 at the middle position of the alloy resistor body 100, the flowability of the resin during injection molding can be improved, allowing the production of smaller size, higher precision alloy resistors, and the miniaturization of metal plate resistors, improving the precision and quality of injection molding.

[0035] Further, at least part of the first hole wall 11, the second hole wall 12, the third hole wall 13 and the fourth hole wall 14 of the hole structure 1 are recessed towards the middle position, which can increase the contact area of the glue after injection molding, significantly enhance the adhesion and packaging firmness; at the same time, at least part of the first hole wall 11, the second hole wall 12, the third hole wall 13 and the fourth hole wall 14 are recessed towards the middle position, which can also guide the flow of glue, ensure uniform distribution and reduce bubble generation, reduce internal stress after packaging, reduce the risk of deformation and improve overall reliability.

[0036] Further, by setting the hole structure 1, it can help to provide good positioning function during packaging process, ensure the stability of the assembly and facilitate quality inspection.

[0037] Specifically, the first hole wall 11, the second hole wall 12, the third hole wall 13 and the fourth hole wall 14 are respectively a first concave arc, a second concave arc, a third concave arc and a fourth concave arc which are concave towards the middle position. The first concave arc and the third concave arc are oppositely arranged. The second concave arc and the fourth concave arc are oppositely arranged. The second concave arc and the fourth concave arc are arranged along the transverse direction, and the first concave arc and the third concave arc are arranged along the longitudinal direction.

[0038] The alloy resistor 100 has contact terminals at two ends along the transverse direction, and a notch structure 2 is formed by being concave inward near the contact terminals on the alloy resistor 100. Since the length of the alloy resistor 100 is unchanged, the resistance area can be reduced by setting the notch, so that the resistance value can be adjusted. It should be noted that the form of the notch structure 2 is not limited. It can be determined according to actual needs, as long as the resistance area can be adjusted. By setting the notch structure 2, the current trend can be changed, so that the current flows through a longer length L.

[0039] The position of the notch structure 2 can be as close to the contact terminal as possible, so that the structure is relatively more solid and the stress is reduced. The larger the slotting area of the notch structure 2, the smaller the area of the corresponding alloy resistor 100, and the larger the resistance value of the alloy resistor 100.

[0040] Specifically, the notch structure 2 is arranged along the longitudinal direction; the notch structure 2 includes a straight cylinder segment 211, 221 and an arc segment 212, 222 along the longitudinal direction, the straight cylinder segment 211, 221 is arranged inward from the edge of the alloy resistor 100, the arc segment 212, 222 is arranged in connection with the straight cylinder segment 211, 221, and the edge of the arc segment 212, 222 is smoothly connected with the straight cylinder segment 211, 221. Thus, it is convenient to process and form. In this embodiment, the arc segment 212, 222 is tangentially arranged with the edge of the straight cylinder segment 211, 221.

[0041] As shown in Figure 1 The first notch 21 and the second notch 22 are arranged on different sides of the alloy resistor 100, so that the strength of the alloy resistor 100 can be ensured, and the overall strength is not too low due to the first notch 21 and the second notch 22 arranged on the same side.

[0042] Further, by the first notch 21 and the second notch 22, the heat dissipation area can be increased, and the stress can be more evenly distributed.

[0043] Each contact terminal comprises voltage connection contact points 31, 41 and current connection contact points 32, 42 arranged longitudinally. The alloy resistor 100 has a first end 3 and a second end 4 at opposite ends. The first notch 21 is provided at the current connection contact point 32 close to the first end 3; the second notch 22 is provided at the voltage connection contact point 41 close to the second end 4. The voltage connection contact points 31, 41 and the current connection contact points 32, 42 of each contact terminal are arranged extending outwardly in the transverse direction.

[0044] In addition, the alloy resistor 100 is made of copper-nickel alloy or other high-conductivity metal material, so that the alloy resistor 100 maintains excellent conductive performance when miniaturized. The resin material is thermoplastic resin, which has better heat resistance and chemical resistance, and is suitable for working environments with high temperature and high humidity. The optimized production process uses high-precision laser cutting technology to improve the cutting accuracy of the resistor, reduce waste and improve production consistency.

[0045] Obviously, the above-described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, those skilled in the art can make other different forms of changes or modifications without creative labor, and all of them should belong to the protection scope of the present application.

Claims

1. An alloy resistive body, characterized by, The alloy resistor is punched to form a hole structure at a middle position of the alloy resistor, and a hole wall of the hole structure comprises a first hole wall, a second hole wall, a third hole wall and a fourth hole wall connected in sequence. At least part of the first hole wall, the second hole wall, the third hole wall and the fourth hole wall are recessed towards the middle position.

2. The alloy resistor of claim 1 wherein, The first hole wall, the second hole wall, the third hole wall and the fourth hole wall are respectively a first recessed arc, a second recessed arc, a third recessed arc and a fourth recessed arc recessed towards the middle position.

3. The alloy resistor of claim 1 wherein, The alloy resistor has a contact terminal at each end in the transverse direction. A notch structure is recessed inwardly on the alloy resistor near the contact terminal.

4. The alloy resistor of claim 3 wherein, The notch structure is arranged in the longitudinal direction. The notch structure comprises a straight cylinder segment and an arc segment in the longitudinal direction, the straight cylinder segment is arranged inwardly from the edge of the alloy resistor, the arc segment is arranged in connection with the straight cylinder segment, and the arc segment is smoothly connected with the edge of the straight cylinder segment.

5. The alloy resistor of claim 4 wherein, The arc segment is tangentially arranged with the edge of the straight cylinder segment.

6. The alloy resistor of claim 3 wherein, The alloy resistor has a first notch and a second notch respectively on both ends near the corresponding contact terminal.

7. The alloy resistor of claim 6 wherein, The first notch and the second notch are arranged on different sides of the alloy resistor.

8. The alloy resistor of claim 7 wherein, Each contact terminal comprises a voltage connection contact point and a current connection contact point arranged in the longitudinal direction.

9. The alloy resistor of claim 8 wherein, The alloy resistor has a first end and a second end at opposite ends; The first notch is arranged near the current connection contact point of the first end, and the second notch is arranged near the voltage connection contact point of the second end.

10. The alloy resistive body of claim 8 wherein, The voltage connection contact point and the current connection contact point of each contact terminal are arranged outwardly in the transverse direction.

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