Power supply connector

Abstract

The utility model discloses a power supply connector, which comprises a plastic shell, a plurality of upper row terminal groups and a plurality of lower row terminal groups, each upper row terminal group and each lower row terminal group respectively comprise a first power supply terminal and a second power supply terminal, and the first power supply terminals and the second power supply terminals are stacked and fixedly welded through metal fixing sheets. One side surface of each metal fixing sheet is provided with a buckle elastic sheet, and the upper row terminal group and the lower row terminal group are fixed in the plastic housing through the buckle elastic sheets. According to the utility model, the first power supply terminal and the second power supply terminal are fixedly clamped by the metal fixing sheet, the upper row terminal group and the lower row terminal group are combined together without a plastic part, the upper row terminal group and the lower row terminal group are independently separated from each other up and down, and the metal fixing sheet not only provides a fixing and assembling function, but also can realize an elastic function for the terminals, so that double benefits are achieved. The first power supply terminal and the second power supply terminal do not have elasticity, but realize rebound capability through the elastic supporting arm on the metal fixing sheet.

Description

Technical Field

[0001] The utility model relates to the field of connectors, in particular to a power connector. Background Art

[0002] The existing internal structure fixing method of the power connector is as follows: (1) the two lower row terminals and the two upper row terminals are fixed together into a whole through (4) a plastic part that fixes the terminals, and then inserted into the interior of the plastic shell. Rigid buckles are used to prevent them from falling out of the plastic shell. In addition, the contact spring relies on its own elastic properties to achieve the current carrying capacity.

[0003] Disadvantages of the fixed method: The two upper rows and two lower rows, totaling four types, need to be manually placed inside the mold and removed after injection molding. During the placement process, the terminals need to be manually stacked. Failure to stack them properly will make it difficult to place them inside the mold. Inaccurate placement can cause damage to the terminals, resulting in wasted labor time and huge power consumption of the injection molding machine, as well as a high defect rate. The rigid buckle points are easily worn during the insertion process of the plastic housing, resulting in insufficient buckle height and causing the terminals to fall out of the plastic housing.

[0004] Disadvantages in current carrying capacity: The two upper and two lower rows of terminals need to carry current. In order to make the contact springs of the terminals have elastic functions, the material properties of the terminals must have toughness and elasticity. However, this will also weaken the current carrying capacity of the terminals, making it impossible to break through the bottleneck of current carrying capacity in a fixed space. Summary of the Invention

[0005] In order to overcome the shortcomings and deficiencies in the prior art, the present invention aims to provide a power connector.

[0006] The purpose of the present invention is achieved through the following technical solution: a power connector, comprising a plastic shell, a plurality of upper-row terminal groups and a plurality of lower-row terminal groups, each of the upper-row terminal groups and each of the lower-row terminal groups comprising a first power terminal and a second power terminal, the first power terminal and the second power terminal being stacked and fixed and welded by a metal fixing plate, a snap spring being provided on one side of each of the metal fixing plates, the upper-row terminal groups and the lower-row terminal groups being fixed in the plastic shell by the snap spring. The first power terminal and the second power terminal can be made of a metal material with good conductor performance, such as metallic silver, metallic copper, etc., and the first power terminal and the second power terminal can be non-elastic, but can achieve rebound capability through the elastic support arms on the metal fixing plates. The first power terminal and the second power terminal do not have elastic function themselves, but have elastic function with the assistance of the metal fixing plates, so that the terminals have the best conductivity and elasticity, and the current carrying capacity of the terminals is improved. The snap spring is integrally formed with the metal fixing plate and is elastic. When inserted into the plastic shell, it flexibly docks with the plastic shell instead of rigidly docking. The metal snap spring will not be worn by the plastic shell, which can make the connection between the snap spring and the plastic shell more stable.

[0007] As an improvement to the power connector of the present invention, a plurality of upper-row terminal jacks and lower-row terminal jacks are arranged at intervals on the plastic shell, and a limiting groove is provided on the side wall of each of the upper-row terminal jacks and each of the lower-row terminal jacks. The limiting groove cooperates with the snap spring to limit the movement of the upper-row terminal group and the lower-row terminal group.

[0008] As an improvement to the power connector of the present utility model, a plurality of first metal contact sheets are provided at intervals at one end of the first power terminal, and a plurality of second metal contact sheets are provided at intervals at one end of the second power terminal. A middle portion of each of the first metal contact sheet and the second metal contact sheet is bent to form an abutting arm, and an end portion of each of the first metal contact sheet and the second metal contact sheet is bent outward to form a docking portion. The first metal contact sheets and the second metal contact sheets are arranged in a staggered manner.

[0009] One end of the metal fixing plate is provided with a plurality of elastic support arms at intervals, the end of the elastic support arm is bent outward to form a butt-jointing portion, the inner side surface of the elastic support arm rests on the butt-jointing arm, and the butt-jointing portion of each elastic support arm rests on the docking portion.

[0010] As an improvement to the power connector of the present invention, a clamping member is provided at the other end of the metal fixing plate, which clamps and secures the first and second power terminals. After being clamped and secured by the clamping member, the first and second power terminals are then spot-welded to prevent movement between the clamping member and the first and second power terminals, thereby improving their security.

[0011] As an improvement to the power connector of the present invention, a clamping groove is provided in the middle of each of the first and second power terminals. The clamping member secures the first and second power terminals within the clamping groove. The first and second power terminals are stacked together and secured by the clamping member, eliminating the need for plastic injection molding.

[0012] As an improvement to the power connector of the present invention, the other ends of the first power terminal and the second power terminal are bent to form a mounting portion, and the bending angle of the mounting portion is 90 degrees.

[0013] As an improvement to the power connector of the present invention, a signal terminal mounting cavity is further provided on the plastic shell. Both ends of the signal terminal mounting cavity are open structures. There are multiple signal terminal mounting cavities, and the multiple signal terminal mounting cavities are arranged in an upper and lower interval arrangement on the plastic shell.

[0014] As an improvement of the power connector of the utility model, it further comprises a plurality of signal terminals, each of the signal terminals being installed in a corresponding signal terminal installation cavity, and a signal interface is formed between the upper and lower rows of signal terminals.

[0015] The beneficial effect of the present invention is that the present invention adopts a metal fixing plate to fix and clamp the first power terminal and the second power terminal. The upper terminal group and the lower terminal group are not combined together without plastic parts. The upper terminal group and the lower terminal group are independently separated from each other. The metal fixing plate not only provides a fixed assembly function, but also can realize the elastic function of the terminal, killing two birds with one stone. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded view of the utility model;

[0017] Figure 2 This is an exploded schematic diagram of the upper terminal group and the lower terminal group of the present invention;

[0018] The figures are marked as follows: 1. plastic shell, 2. upper row terminal group, 3. lower row terminal group, 4. first power terminal, 5. second power terminal, 6. metal fixing plate, 7. snap spring, 8. upper row terminal jack, 9. lower row terminal jack, 10. top arm, 11. docking part, 12. elastic support arm, 13. top, 14. clamping part, 15. clamping groove, 16. mounting part, 17. signal terminal mounting cavity, 18. signal terminal, 41. first metal contact piece, 51. second metal contact piece. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0022] like Figure 1 and Figure 2As shown, a power connector includes a plastic housing 1, multiple upper-row terminal groups 2, and multiple lower-row terminal groups 3. Each upper-row terminal group 2 and each lower-row terminal group 3 includes a first power terminal 4 and a second power terminal 5. The first and second power terminals 4 and 5 are stacked and welded together via a metal fixing plate 6. Each metal fixing plate 6 is provided with a snap-on spring 7 on one side. The upper and lower-row terminal groups 2 and 3 are secured within the plastic housing 1 via the snap-on spring 7. The first and second power terminals 4 and 5 can be made of a metal material with excellent conductor properties, such as silver or copper. The first and second power terminals 4 and 5 do not necessarily have elastic properties, but instead achieve resilience through elastic support arms on the metal fixing plates 6. The first and second power terminals 4 and 5, which lack inherent elasticity, are given elasticity by the metal fixing plates 6, resulting in optimal conductivity and elasticity, thereby improving the terminals' current-carrying capacity. The snap spring piece 7 is integrally formed with the metal fixing piece 6 and is elastic. When inserted into the plastic shell 1, it flexibly docks with the plastic shell 1 instead of rigidly docking. The metal snap spring piece 7 will not be worn by the plastic shell 1, which can make the connection between the snap spring piece 7 and the plastic shell 1 more stable.

[0023] Preferably, a plurality of upper-row terminal jacks 8 and lower-row terminal jacks 9 are arranged at intervals on the plastic housing 1, and a limiting groove (not shown) is provided on the side wall of each upper-row terminal jack 8 and each lower-row terminal jack 9. The limiting groove cooperates with the snap spring 7 to limit the movement of the upper-row terminal group 2 and the lower-row terminal group 3.

[0024] Preferably, a plurality of first metal contact sheets 41 are provided at intervals at one end of the first power terminal 4, and a plurality of second metal contact sheets 51 are provided at intervals at one end of the second power terminal 5, and a supporting arm 10 is bent outward at the middle of each first metal contact sheet 41 and the second metal contact sheet 51, and a docking portion 11 is bent outward at the end of each first metal contact sheet 41 and the second metal contact sheet 51, and the first metal contact sheet 41 and the second metal contact sheet 51 are staggered and arranged; the first metal contact sheet 41 and the second metal contact sheet 51 of the present application respectively adopt two sheets.

[0025] One end of the metal fixing plate 6 is provided with a plurality of elastic support arms 12 at intervals. The end of the elastic support arm 12 is bent outward to form a supporting top portion 13. The inner side surface of the elastic support arm 12 rests on the supporting arm 10, and the supporting top portion 13 of each elastic support arm 12 rests on the docking portion 11.

[0026] Preferably, a clamping member 14 is provided at the other end of the metal fixing plate 3, and the clamping member 14 clamps and secures the first power terminal 4 and the second power terminal 5. After being clamped and secured by the clamping member, the first power terminal 4 and the second power terminal 5 are fixed by spot welding to prevent movement of the clamping member 14 and the first power terminal 4 and the second power terminal 5, thereby improving the firmness.

[0027] Preferably, a clamping groove 15 is provided in the middle of each of the first power terminal 4 and the second power terminal 5. The clamping member 14 clamps and secures the first power terminal 4 and the second power terminal 5 at the position of the clamping groove 15. The first power terminal 4 and the second power terminal 5 are stacked together and clamped and secured by the clamping member 14, eliminating the need for plastic injection molding.

[0028] Preferably, the other ends of the first power terminal 4 and the second power terminal 5 are bent to form a mounting portion 16 , and the bending angle of the mounting portion 16 is 90 degrees.

[0029] Preferably, the plastic housing 1 is further provided with a signal terminal mounting cavity 17 , both ends of which are open structures. There are multiple signal terminal mounting cavities 17 , and the multiple signal terminal mounting cavities 17 are arranged in an upper and lower interval arrangement on the plastic housing 1 .

[0030] Preferably, a plurality of signal terminals 18 are further included, each signal terminal 18 is installed in a corresponding signal terminal installation cavity 17 , and a signal interface is formed between the upper and lower rows of signal terminals 18 .

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and structure of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power connector comprising a plastic housing, a plurality of upper terminal groups and a plurality of lower terminal groups, characterized in that: Each of the upper row terminal groups and each of the lower row terminal groups includes a first power terminal and a second power terminal. The first power terminal and the second power terminal are stacked and fixed and welded by a metal fixing plate. A snap spring is provided on one side of each of the metal fixing plates. The upper row terminal group and the lower row terminal group are fixed in the plastic shell by the snap spring.

2. The power connector according to claim 1, wherein: The plastic shell is provided with a plurality of upper-row terminal jacks and lower-row terminal jacks arranged at intervals, and a limiting groove is provided on the side wall of each upper-row terminal jack and each lower-row terminal jack. The limiting groove cooperates with the snap spring to limit the movement of the upper-row terminal group and the lower-row terminal group.

3. The power connector according to claim 2, wherein: A plurality of first metal contact pieces are provided at intervals at one end of the first power terminal, and a plurality of second metal contact pieces are provided at intervals at one end of the second power terminal. A middle portion of each of the first metal contact piece and the second metal contact piece is bent to form an abutting arm, and an end portion of each of the first metal contact piece and the second metal contact piece is bent outward to form a docking portion. The first metal contact pieces and the second metal contact pieces are arranged in a staggered manner. One end of the metal fixing plate is provided with a plurality of elastic support arms at intervals, the end of the elastic support arm is bent outward to form a butt-jointing portion, the inner side surface of the elastic support arm rests on the butt-jointing arm, and the butt-jointing portion of each elastic support arm rests on the docking portion.

4. The power connector according to claim 2, wherein: A clamping piece is provided at the other end of the metal fixing plate, and the clamping piece clamps and fixes the first power terminal and the second power terminal.

5. The power connector according to claim 4, wherein: A clamping groove is provided in the middle of each of the first power terminal and the second power terminal, and the clamping member clamps and fixes the first power terminal and the second power terminal at the position of the clamping groove.

6. The power connector according to claim 3, wherein: The other ends of the first power terminal and the second power terminal are bent to form a mounting portion, and the bending angle of the mounting portion is 90 degrees.

7. The power connector according to claim 1, wherein: The plastic housing is further provided with a signal terminal mounting cavity, both ends of which are open structures. There are multiple signal terminal mounting cavities, which are arranged in an upper and lower interval arrangement on the plastic housing.

8. The power connector according to claim 7, wherein: It also includes a plurality of signal terminals, each of which is installed in a corresponding signal terminal installation cavity, and a signal interface is formed between the upper and lower rows of signal terminals.

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