A male terminal and a connector

Abstract

The utility model provides a kind of male terminal and connector, belong to connecting device field.The male terminal includes wire pressing portion, plug-in portion and the transition connecting portion between wire pressing portion and plug-in portion, plug-in portion includes two plug-in pieces that are integrally combined with transition connecting portion and are overlapped together, and the joint of two plug-in pieces is provided with welding spot, and the corresponding edge of two plug-in pieces is fixedly connected together by welding spot.The connector includes the male terminal described above.In the utility model, the edge of two plug-in pieces is fixedly connected together by welding spot, which enhances the ability of plug-in piece to resist warping and opening and the ability to resist bending deformation.

Description

Technical Field

[0001] This utility model belongs to the field of connection devices, and in particular relates to a male terminal and connector. Background Technology

[0002] The low-current male terminals used in new energy vehicles have lower requirements for current carrying capacity. Therefore, in order to reduce costs and improve processing efficiency, low-current male terminals are generally formed by stamping.

[0003] See appendix Figure 11 The male terminal includes a crimping portion 1 for crimping a wire, a plug-in portion 2 for inserting into a female terminal, and a transition connection portion 3 connecting the crimping portion 1 and the plug-in portion 2. The plug-in portion 2 is formed by stacking two pin plates 21. The crimping portion 1 has two crimping arms 12. The wire is placed between the two crimping arms 12, and the two crimping arms 12 are bent towards the wire to crimp the wire, thereby achieving the connection between the male terminal and the wire.

[0004] The male terminal is machined from a single piece of metal strip, and to facilitate stamping and wire crimping, the metal strip is generally thin, resulting in limited strength of the pins. During long-term insertion and removal from the female terminal, the ends of the two pins of the male terminal are prone to warping and spreading, as well as bulging in the middle, affecting normal use. Utility Model Content

[0005] The purpose of this utility model is to provide a male terminal to solve the technical problem in the prior art where the two pins on the male terminal are prone to warping and spreading at the ends and bulging in the middle, which affects normal insertion and use.

[0006] Another objective of this invention is to provide a connector to solve the aforementioned technical problems.

[0007] To achieve the above objectives, the technical solution for the male terminal provided by this utility model is as follows:

[0008] A male terminal includes a wire crimping portion, a plug-in portion, and a transition connection portion located between the wire crimping portion and the plug-in portion. The plug-in portion includes two pin pieces integrally combined with and superimposed on the transition connection portion. There are fitting seams between the two pin pieces on both sides in the width direction and between the two pin pieces on the side away from the transition connection portion in the length direction. At least one fitting seam is provided with a solder point or weld, and the solder point or weld fixes the corresponding edges of the two pin pieces together.

[0009] As a further improvement, a weld point is provided between the edges of at least one side of the two pin pieces in the width direction, and the weld point is provided at least at the position of the pin piece near the transition connection and at the position of the pin piece away from the transition connection.

[0010] As a further improvement, the seam between the edges on both sides of the two pin pieces in the width direction is provided with solder joints, and the solder joints on both sides are arranged symmetrically.

[0011] As a further improvement, weld points are provided between the edges along the length direction and on the side furthest from the transition joint, and the weld points are located in the middle of that side.

[0012] As a further improvement, a weld is provided between the edges of at least one side of the two insert plates in the width direction, the weld being either a partial weld or a continuous weld.

[0013] As a further improvement, welds are provided between the edges on both sides of the two pin plates in the width direction, and the welds on both sides are arranged symmetrically.

[0014] As a further improvement, welds are provided between the edges along the length direction and on the side furthest from the transition joint.

[0015] As a further improvement, at least one joint should have both a weld point and a weld.

[0016] As a further improvement, at least one bonding seam is provided with only a weld point, and at least one bonding seam is provided with only a weld.

[0017] The beneficial effects are as follows: The male terminal provided by this utility model is an improvement on the prior art. In this male terminal, after at least part of the edges of the two pin pieces are fixedly connected together by solder joints or welds, it can prevent the ends of the two pin pieces from warping and opening, and the middle from bulging. The solder joints and welds can directly withstand the tensile force along the thickness direction of the pin pieces, preventing the pin pieces from opening. The solder joints and welds can also withstand tangential forces, preventing the two pin pieces from shifting along their length direction, thereby suppressing the bending deformation of the pin pieces and preventing the middle of the pin pieces from bulging.

[0018] To achieve the above objectives, the technical solution for the connector provided by this utility model is as follows:

[0019] A connector includes a housing and a male terminal mounted on the housing. The male terminal includes a crimping portion, a mating portion, and a transition connection portion located between the crimping portion and the mating portion. The mating portion includes two pin pieces integrally joined with and superimposed on the transition connection portion. There are fitting seams between the two pin pieces on both sides in the width direction and between the two pin pieces on one side in the length direction away from the transition connection portion. At least one fitting seam is provided with a solder point or weld, which fixes the corresponding edges of the two pin pieces together.

[0020] As a further improvement, a weld point is provided between the edges of at least one side of the two pin pieces in the width direction, and the weld point is provided at least at the position of the pin piece near the transition connection and at the position of the pin piece away from the transition connection.

[0021] As a further improvement, the seam between the edges on both sides of the two pin pieces in the width direction is provided with solder joints, and the solder joints on both sides are arranged symmetrically.

[0022] As a further improvement, weld points are provided between the edges along the length direction and on the side furthest from the transition joint, and the weld points are located in the middle of that side.

[0023] As a further improvement, a weld is provided between the edges of at least one side of the two insert plates in the width direction, the weld being either a partial weld or a continuous weld.

[0024] As a further improvement, welds are provided between the edges on both sides of the two pin plates in the width direction, and the welds on both sides are arranged symmetrically.

[0025] As a further improvement, welds are provided between the edges along the length direction and on the side furthest from the transition joint.

[0026] As a further improvement, at least one joint should have both a weld point and a weld.

[0027] As a further improvement, at least one bonding seam is provided with only a weld point, and at least one bonding seam is provided with only a weld.

[0028] The beneficial effects are as follows: The connector provided by this utility model is an improvement on the prior art. In the male terminal of this connector, after at least a portion of the edges of the two pin pieces are fixedly connected together by solder joints or welds, it can prevent the ends of the two pin pieces from warping and opening, and the center from bulging. The solder joints and welds can directly withstand the tensile force along the thickness direction of the pin pieces, preventing the pin pieces from opening. The solder joints and welds can also withstand tangential forces, preventing the two pin pieces from shifting along their length, thereby suppressing bending deformation of the pin pieces and preventing the center of the pin pieces from bulging. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the blank structure in one embodiment of the male terminal of this utility model;

[0030] Figure 2 This is a schematic diagram of the overall structure of one embodiment of the male terminal in this utility model;

[0031] Figure 3This is a structural schematic diagram from one side view of one embodiment of the male terminal in this utility model;

[0032] Figure 4 This is a structural schematic diagram from another side view of one embodiment of the male terminal in this utility model;

[0033] Figure 5 This is a schematic diagram of the front end view of one embodiment of the male terminal in this utility model;

[0034] Figure 6 This is a schematic diagram showing the deformation of one of the pins when subjected to an outward tilting force in a solderless state.

[0035] Figure 7 This is a schematic diagram showing the deformation of one of the pins when subjected to an inward tilting force in a solderless state.

[0036] Figure 8 This is a schematic diagram showing the deformation state of the ends of both pins when they are subjected to a backward force in a solderless state.

[0037] Figure 9 This is a schematic diagram showing the deformation of a pin plate when it is subjected to a lateral force without solder joints.

[0038] Figure 10 This is a schematic diagram of another embodiment of the male terminal in this utility model;

[0039] Figure 11 This is a schematic diagram of the existing technology.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Wire pressing part; 11. Opening; 12. Wire pressing arm; 2. Insertion part; 21. Pin piece; 22. Solder joint; 23. Notch; 24. Connecting finger; 3. Transition connection part; 31. Bending arm; 4. Blank. Detailed Implementation

[0042] The present invention will be further described in detail below with reference to the embodiments.

[0043] Specific embodiments of the male terminal provided by this utility model:

[0044] The male terminal is formed by stamping from a single piece of metal strip. The blank after cutting the metal strip is as follows: Figure 1 As shown. The structure of the male terminal after molding is as follows. Figure 2 As shown, it includes a wire clamping part 1, a plug-in part 2, and a transition connection part 3 located between the wire clamping part 1 and the plug-in part 2.

[0045] The wire clamping part 1 has an opening 11 on one side, and cantilevered wire clamping arms 12 are provided on both sides of the opening 11. When it is necessary to connect to the wire, the wire is placed in the opening 11 of the wire clamping part 1, and then the wire clamping arms 12 are bent towards the wire and clamped to the wire.

[0046] The transition connection part 3 is used to transition between the crimping part 1 and the plug-in part 2. The transition connection part 3 has a hollow structure. Two bent arms 31 extend from the transition connection part 3 toward the plug-in part 2. The bent arms 31 are bent so that the ends connected to the plug-in part 2 are brought together.

[0047] The connector 2 includes two pin pieces 21, which are of equal shape and size and are stacked together. The two pin pieces 21 are integrally connected to two bending arms 31, which apply a certain clamping force to the connector pieces, so that the two pin pieces 21 can be tightly attached to each other.

[0048] After the male terminal is stamped and formed, it is then welded using laser spot welding. For ease of description, the direction in which the male terminal is inserted into the female terminal on the adapter connector is considered its front-to-back direction, the end of the male terminal inserted into the female terminal is considered its front end, and the direction on the male terminal that is perpendicular to the front-to-back direction and also perpendicular to the thickness direction of the pin piece 21 is considered its left-to-right direction. The mating seam formed by the two pin pieces 21 is on the left and right sides and the front end side of the insertion part 2. The length direction of the pin piece 21 is the front-to-back direction, and the width direction of the pin piece 21 is the left-to-right direction.

[0049] See appendix Figure 2 and in conjunction with the appendix Figure 3 Appendix Figure 4 and appendix Figure 5 The solder joints 22 formed by welding are distributed on the front end side and the left and right sides of the plug part 2. Specifically, the solder joint 22 on the front end side of the plug part 2 is located at its center. Two solder joints 22 are provided on each of the left and right sides of the plug part 2, and these two solder joints 22 are located at the position of the pin piece 21 near the transition connection part 3 and the position away from the transition connection part 3, respectively.

[0050] During use, if the male terminal is misaligned or misaligned with the female terminal on the adapter connector, the pin 21 may be subjected to complex forces in various directions.

[0051] Without solder joint 22, during the long-term insertion and removal of the pin piece 21 from the female terminal, the outer front end of the pin piece 21 is easily subjected to a backward pulling force due to friction with the female terminal, which makes it easy for a single pin piece 21 to warp outward. After setting solder joint 22, the solder joint 22 can provide a supporting force for the two pin pieces 21, thereby inhibiting the warping and opening of the front end of the pin piece 21.

[0052] See appendix Figure 6 Without solder joint 22, when one of the pin pieces 21 is impacted and its front end is subjected to an outward tilting force, the front end of the pin piece 21 will bend outward. If the degree of bending exceeds its elastic deformation limit, the pin piece 21 will undergo plastic deformation, resulting in the front end of the pin piece 21 opening up. After setting solder joint 22, the force can be transferred to the other pin piece 21 through the solder joint 22, thereby enhancing the deformation resistance of the individual pin piece 21 and reducing the phenomenon of the front end of the pin piece 21 opening up.

[0053] See appendix Figure 7 Without solder joint 22, when one of the pin pieces 21 is impacted and its front end is subjected to an inward tilting force, the front end of the pin piece 21 will bend inward. If the degree of bending exceeds its elastic deformation limit, the pin piece 21 will undergo plastic deformation, resulting in a unilateral bulge in the middle. With solder joint 22, the solder joint 22 can tightly pull the two pin pieces 21 together, preventing the bulge in the middle.

[0054] See appendix Figure 8 Without solder joint 22, when the two pin pieces 21 are impacted and their front ends are subjected to a backward force, the front ends of both pin pieces 21 will bend inward. If the degree of bending exceeds the limit of their elastic deformation, the pin pieces 21 will undergo plastic deformation, resulting in a bulging phenomenon in the middle of both sides. After setting solder joint 22, the solder joint 22 can tightly pull the two pin pieces 21 together, preventing the bulging phenomenon in the middle.

[0055] See appendix Figure 9 Without solder joint 22, when the two pin pieces 21 are subjected to lateral force, they bend simultaneously in one direction along the thickness. When the force on the pin pieces 21 reaches a certain value, plastic deformation will occur, affecting normal use. One pin piece 21 is located inside the bend, and the other outside, with different degrees of bending. Without solder joint 22, the two pin pieces 21 will shift relative to each other; specifically, the outer pin piece 21 will shift backward relative to the inner pin piece 21. When the edges of the two pin pieces 21 are fixed together by solder joint 22, the solder joint 22 prevents relative shifting. At this point, the solder joint 22 bears tangential stress; one pin piece 21 is under tension, while the other is under compression. The pin pieces 21 no longer bear lateral force and are therefore less prone to bending and deformation.

[0056] Of all the solder joints 22, the solder joint 22 located at the front end of the pin piece 21 mainly bears tensile stress, while the solder joints 22 located on the left and right sides of the pin piece 21 bear both tensile and shear stress. Together, the solder joints 22 ensure that the pin piece 21 is not prone to opening, not prone to bulging in the middle, and not prone to bending and deformation.

[0057] In this embodiment, the weld points 22 on the left and right sides of the joint are symmetrically arranged to ensure that the force is evenly distributed on both sides. In other embodiments, the weld points 22 on the left and right sides may also be asymmetrically arranged, or one side may have weld points 22 while the other side does not.

[0058] In other embodiments, the solder joints on the left and right sides of the plug portion may be located only at the position of the pin plate near the transition connection portion.

[0059] In other embodiments, solder joints may be provided only on the front end side of the connector or only on the left and right sides of the connector. When solder joints are provided only on the left and right sides of the connector, solder joints may be provided only at the position of the pin piece near the transition connection, or only at the position of the connector piece away from the transition connection, or solder joints may be provided at both the position of the pin piece near the transition connection and the position away from the transition connection.

[0060] In other embodiments, the number of solder joints can be further increased, with three solder joints provided on the seam between the left and right edges of the two pin pieces.

[0061] In other embodiments, welds can be provided instead of weld points at the joints between the left and right edges of the two pin pieces and at the joints between the front edges of the pin pieces. The weld can be a continuous weld, closing all joints; or it can be a partial weld, closing only a portion of the joints. The weld can be provided at only one joint, at two joints, or at all joints.

[0062] In other embodiments, welds and weld points can be provided simultaneously. For example, a continuous weld can be provided at the joint between the front edges of the pin pieces, while weld points can be provided at the joint between the left and right edges of the two pin pieces. Alternatively, welds and weld points can be provided at each joint, with the welds and weld points at the same joint alternating and spaced apart.

[0063] In other embodiments, see Appendix Figure 10Alternatively, notches 23 can be machined on the left and right sides of one of the pin pieces 21, and connecting fingers 24 can be machined at corresponding positions on the left and right sides of the other pin piece 21. After the two pin pieces 21 are attached together, the connecting fingers 24 are bent and embedded into the notches 23 on the other pin piece 21. Finally, the connecting fingers 24 are welded to the sidewalls of the notches 23. Compared with simple weld points 22, the connecting fingers 24 have a stronger ability to withstand shear forces, thus further improving the bending deformation resistance of the pin pieces 21.

[0064] Specific embodiments of the connector provided by this utility model:

[0065] The connector includes a housing and a male terminal mounted on the housing. The male terminal is the same as the male terminal in the above embodiments, and will not be described again.

[0066] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A male terminal, comprising a wire-pressing portion (1), a plug-in portion (2), and a transition connection portion (3) located between the wire-pressing portion (1) and the plug-in portion (2), wherein the plug-in portion (2) comprises two pin pieces (21) integrally joined with and superimposed on the transition connection portion (3), and there are fitting seams between the edges on both sides in the width direction and between the edge on one side in the length direction away from the transition connection portion (3), characterized in that, At least one joint is provided with a weld point (22) or weld seam, which fixes the corresponding edges of the two insert pieces (21) together.

2. The male terminal according to claim 1, characterized in that, A weld point (22) is provided between the edges of at least one side of the two pin pieces (21) in the width direction, and the weld point (22) is provided at least at the position of the pin piece (21) near the transition connection (3) and at the position of the pin piece (21) away from the transition connection (3).

3. The male terminal according to claim 2, characterized in that, Welding points (22) are provided on the joint between the edges of the two pin pieces (21) in the width direction, and the welding points (22) on both sides are arranged symmetrically.

4. The male terminal according to any one of claims 1-3, characterized in that, Welding points (22) are provided between the edges of the side away from the transition connection (3) along the length direction and the seam, and the welding points (22) are located in the middle of that side.

5. The male terminal according to claim 1, characterized in that, The fit seam between the edges of at least one side of the two insert plates (21) in the width direction is provided with a weld, which is a partial weld or a continuous weld.

6. The male terminal according to claim 2, characterized in that, Both sides of the two insert pin pieces (21) are provided with welds in the width direction of the fit seam between the two edges, and the welds on both sides are arranged symmetrically.

7. The male terminal according to any one of claims 1 or 5-6, characterized in that, There are welded seams between the edges of the joints along the length direction and on the side furthest from the transition joint (3).

8. The male terminal according to claim 1, characterized in that, At least one joint shall have both a weld point (22) and a weld.

9. The male terminal according to claim 1, characterized in that, At least one bonding joint is provided with only a weld point (22), and at least one bonding joint is provided with only a weld.

10. A connector, comprising a housing, characterized in that, The housing is provided with the male terminal as described in any one of claims 1-9.

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