Terminal and connector

Abstract

The utility model discloses a terminal and connector. The terminal includes a terminal body, a soldering portion and an elastic portion. The terminal body has a center line extending along its length direction, the soldering portion is adapted to be soldered to a circuit board by a solder ball, and the elastic portion is connected between the terminal body and the soldering portion. The elastic portion is adapted to absorb vibration impact to prevent the solder ball from being damaged or falling off. When the solder ball is soldered to the soldering portion, the center line of the terminal body passes through the ball center of the solder ball. The utility model increases the bent spring structure on the terminal, so that the tin ball center for soldering the terminal is on the extension line of the terminal extension, reduces the transverse dimension of the terminal, provides the terminal with damping and buffering, and prevents the tin ball from being easily broken or separated from the terminal.

Description

Technical Field

[0001] This utility model relates to a terminal and a connector including the terminal. Background Technology

[0002] In existing technologies, the solder ball core used for soldering terminals is not on the extension line of the terminal, resulting in a larger lateral dimension of the terminal and requiring the finished connector to occupy more space. When the connector is subjected to vibration, the solder ball is prone to cracking or detaching from the terminal. Furthermore, the capping structure covering the terminal end on the connector's plastic housing is prone to friction when mating with the mating terminal, easily scratching the plastic on the capping structure and generating plastic debris. Additionally, the excessive mating force required when mating the connector with the mating connector increases the difficulty of mating. Utility Model Content

[0003] The purpose of this utility model is to solve at least one aspect of the aforementioned problems and defects existing in the prior art.

[0004] According to one aspect of the present invention, a terminal is provided, comprising: a terminal body, a solder portion, and a resilient portion. The terminal body has a centerline extending along its length, the solder portion is adapted to be soldered to a circuit board via a solder ball, and the resilient portion connects the terminal body and the solder portion. The resilient portion is adapted to absorb vibration and shock to prevent the solder ball from breaking or falling off. When the solder ball is soldered to the solder portion, the centerline of the terminal body passes through the center of the solder ball.

[0005] According to an exemplary embodiment of the present invention, the elastic part includes a bent elastic arm, the two ends of which are respectively connected to the terminal body and the welding part.

[0006] According to another exemplary embodiment of the present invention, the elastic arm is arc-shaped, S-shaped, or V-shaped.

[0007] According to another exemplary embodiment of the present invention, the terminal body and the welding portion are flat, and the welding portion is spaced apart from one end of the terminal body and perpendicular to the terminal body.

[0008] According to another exemplary embodiment of the present invention, the terminal body includes: a fixing part located at one end of the terminal body and connected to the elastic part, for fixing in the connector housing to fix the terminal to the connector housing.

[0009] According to another exemplary embodiment of the present invention, the terminal body further includes a mating portion located at the other end of the terminal body for mating with the mating terminals of the mating connector.

[0010] According to another exemplary embodiment of the present invention, the terminal body further includes: a guide portion connected to the end of the mating portion and bent at a predetermined angle relative to the mating portion, for guiding the terminal to mate with the mating terminal.

[0011] According to another exemplary embodiment of the present invention, the terminal is an integral machined terminal or an integral stamped terminal.

[0012] According to another aspect of the present invention, a connector is provided, comprising: a connector housing and the aforementioned terminals. The connector housing has terminal sockets formed therein; the aforementioned terminals are inserted into the terminal sockets.

[0013] According to an exemplary embodiment of the present invention, the connector housing has a retaining portion formed in the terminal socket, and the end of the guide portion of the terminal is retained in the retaining portion to hold the terminal in a predetermined position to prevent the terminal from being deformed outward.

[0014] According to another exemplary embodiment of the present invention, the lateral dimension of the retaining portion is smaller than the opening diameter of the mating terminal of the mating connector, so that when the connector is mated with the mating connector, the retaining portion does not contact the mating terminal, thereby preventing the mating terminal from scratching the plastic of the retaining portion.

[0015] According to another exemplary embodiment of the present invention, a connector housing includes: a base, wherein the terminal extends from a first side of the base to a second side in a first direction; and a protrusion extending from a second side of the base along the first direction, wherein the terminal socket passes through at least a portion of the base and the protrusion, and the retaining portion is disposed at the end of the protrusion extending along the first direction.

[0016] According to another exemplary embodiment of the present invention, when the connector mates with the mating connector, the retaining part contacts the mating terminal before the terminal. A transition fillet is provided between the end face of the retaining part perpendicular to the first direction and the side wall of the protrusion, which is used to reduce the insertion force when the connector and the mating terminal of the mating connector are mated and inserted.

[0017] According to another exemplary embodiment of the present invention, the insertion force is less than 0.5 Newtons.

[0018] According to another exemplary embodiment of the present invention, the connector housing is an integral injection molded part.

[0019] In the foregoing exemplary embodiments of the present invention, by adding a bent spring structure to the terminal, the lateral dimension of the terminal is reduced by placing the center of the solder ball used for soldering the terminal on the extension line of the terminal extension, thereby providing vibration damping and buffering for the terminal and making it less likely for the solder ball to crack or detach from the terminal.

[0020] In addition, by reducing the lateral dimension of the capping structure covering the terminal ends on the connector's plastic housing, it is prevented from contacting the mating terminals during mating, thus avoiding the mating terminals scratching the plastic on the capping structure and generating plastic shavings.

[0021] In addition, by setting a transition fillet between the top end face of the capping structure and the side wall of the protruding strip, and by reasonably setting the curvature of the fillet, the insertion force when the connector and the mating connector are mated can be reduced.

[0022] Other objects and advantages of the present invention will become apparent from the following description of the invention with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the invention. Attached Figure Description

[0023] Figure 1A A schematic diagram of a connector assembly according to an exemplary embodiment of the present invention is shown; Figure 1B show Figure 1A The exploded view of the connector assembly shown conceals the mating connectors; Figure 2 show Figure 1A A cross-sectional view of the connector housing shown. Figure 3A show Figure 1A A perspective view of the terminals of the connector shown; Figure 3B show Figure 1A Side view of the terminals of the connector shown; Figure 3C show Figure 1A A side view of the connector terminals being soldered to solder balls; Figure 4A show Figure 1A The connector shown is a cross-sectional view of the mating connector before mating. Figure 4B show Figure 1A The cross-sectional view of the connector shown when it is in initial contact with the mating connector; Figure 4C show Figure 4B A partial enlarged view A showing the initial contact between the connector and the mating connector. Figure 4D show Figure 1A The diagram shows a cross-sectional view of the connector and its mating connector after mating. Figure 5A This shows a cross-sectional view of the connector and mating connector in initial contact according to another exemplary embodiment of the present invention; Figure 5B show Figure 5A A magnified view (B) of the connector shown in the diagram when it is in initial contact with the mating connector. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of this utility model with reference to the accompanying drawings is intended to explain the overall concept of this utility model and should not be construed as a limitation thereof.

[0025] Furthermore, in the following detailed description, numerous specific details are set forth for ease of explanation to provide a thorough understanding of the embodiments disclosed herein. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the figures.

[0026] According to a general technical concept of this utility model, a terminal is provided, comprising a terminal body, a soldering portion, and an elastic portion. The terminal body has a centerline extending along its length, the soldering portion is adapted to be soldered to a circuit board via a solder ball, and the elastic portion connects the terminal body and the soldering portion. The elastic portion is adapted to absorb vibration and shock to prevent the solder ball from breaking or falling off. When the solder ball is soldered to the soldering portion, the centerline of the terminal body passes through the center of the solder ball.

[0027] According to another general technical concept of the present invention, a connector is provided, including a connector housing and the aforementioned terminals. The connector housing has terminal sockets formed therein; the aforementioned terminals are inserted into the terminal sockets.

[0028] First Embodiment Figures 1A to 4D This illustrates a first embodiment according to the present invention. Figure 1A A schematic diagram of a connector assembly according to an exemplary embodiment of the present invention is shown; Figure 1B show Figure 1A The exploded view of the connector assembly shown conceals the mating connectors; Figure 2 show Figure 1A A cross-sectional view of the connector housing shown. Figure 3A show Figure 1A A perspective view of the terminals of the connector shown; Figure 3B show Figure 1ASide view of the terminals of the connector shown; Figure 3C show Figure 1A A side view of the connector terminals being soldered to solder balls; Figure 4A show Figure 1A The connector shown is a cross-sectional view of the mating connector before mating. Figure 4B show Figure 1A The cross-sectional view of the connector shown when it is in initial contact with the mating connector; Figure 4C show Figure 4B A partial enlarged view A showing the initial contact between the connector and the mating connector. Figure 4D show Figure 1A The diagram shows a cross-sectional view of the connector after mating with the mating connector.

[0029] like Figures 1A to 4D As shown, in an exemplary embodiment of this utility model, a terminal 10 is disclosed, including a terminal body 100, a soldering portion 120, and an elastic portion 130. The terminal body 100 has a center line L extending along its length direction; the soldering portion 120 is adapted to be soldered to a circuit board 3 via solder balls 4; the elastic portion 130 connects the terminal body 100 and the soldering portion 120. The elastic portion 130 is adapted to absorb vibration shocks to prevent the solder balls 4 from breaking or falling off. When the solder balls 4 are soldered to the soldering portion 120, the center line L of the terminal body 100 passes through the center O of the solder balls 4.

[0030] like Figures 1A to 4D As shown in the illustrated embodiment, the elastic part 130 includes a bent elastic arm 132, the two ends of which are respectively connected to the terminal body 100 and the welding part 120.

[0031] like Figures 1A to 4D As shown, in the illustrated embodiment, the elastic arm 132 is arc-shaped, S-shaped, or V-shaped.

[0032] like Figures 1A to 4D As shown in the illustrated embodiment, the terminal body 100 and the welding portion 120 are flat, and the welding portion 120 is spaced apart from one end of the terminal body 100 and perpendicular to the terminal body 100.

[0033] like Figures 1A to 4D As shown in the illustrated embodiment, the terminal body 100 includes a fixing part 110 located at one end of the terminal body 100 and connected to the elastic part 130, for fixing in the connector housing 12 to fix the terminal 10 to the connector housing 12.

[0034] like Figures 1A to 4D As shown, in the illustrated embodiment, the terminal body 100 further includes a mating portion 140 located at the other end of the terminal body 100 for mating with the mating terminal 20 of the mating connector 2.

[0035] like Figures 1A to 4D As shown in the illustrated embodiment, the terminal body 100 further includes a guide portion 142, which is connected to the end of the mating portion 140 and bent at a predetermined angle relative to the mating portion 140, for guiding the terminal 10 to mate with the mating terminal 20.

[0036] like Figures 1A to 4D As shown, in the illustrated embodiment, terminal 10 is an integral machined terminal or an integral stamped terminal.

[0037] like Figures 1A to 4D As shown, in another exemplary embodiment of the present invention, a connector 1 is disclosed, comprising a connector housing 12 and the aforementioned terminals 10. The connector housing 12 is formed with terminal sockets 126, and the terminals 10 are inserted into the terminal sockets 126.

[0038] like Figures 1A to 4D As shown in the illustrated embodiment, the connector housing 12 has a retaining portion 128 formed in the terminal socket 126. The end of the guide portion 142 of the terminal 10 is held in the retaining portion 128 to hold the terminal 10 in a predetermined position.

[0039] like Figures 1A to 4D As shown in the illustrated embodiment, the connector housing 12 includes a base 122 and a protrusion 124. A terminal 10 extends from a first side 132 of the base 122 to a second side 134 of the base 122 in a first direction. The protrusion 124 extends from the second side 134 of the base 122 along the first direction, and a terminal socket 126 passes through at least a portion of the base 122 and the protrusion 124. A retaining portion 128 is provided at the end of the protrusion 124 extending along the first direction.

[0040] like Figures 1A to 4D As shown in the illustrated embodiment, when connector 1 mates with mating connector 2, retaining portion 128 contacts mating terminal 20 before terminal 10. A transition fillet 129 is provided between the end face 128a of retaining portion 128 perpendicular to the first direction and the side wall 152 of protrusion 124 to reduce the insertion force when connector 1 and mating terminals 20 of mating connector 2 are mated and inserted.

[0041] like Figures 1A to 4D As shown, in the illustrated embodiment, the insertion force is less than 0.5 Newtons.

[0042] like Figures 1A to 4D As shown in the illustrated embodiment, the connector housing 12 is a one-piece injection molded part.

[0043] Second Embodiment Figures 5A to 5B This illustrates a second embodiment according to the present invention. Figure 5A This shows a cross-sectional view of the connector and mating connector in initial contact according to another exemplary embodiment of the present invention; Figure 5B show Figure 5A A magnified view (B) of the connector shown in the diagram when it is in initial contact with the mating connector.

[0044] and Figures 1A to 4D Compared to the first embodiment shown, Figures 5A to 5B The main difference in the second embodiment shown is the different lateral dimensions of the retaining part. Other technical features of the second embodiment are basically the same as those of the first embodiment, and can be referred to accordingly. Figures 1A to 4D The first embodiment shown.

[0045] like Figures 5A to 5B As shown in the illustrated embodiment, the lateral dimension of the retaining part 128 is smaller than the opening diameter of the mating terminal 20 of the mating connector 2, so that the retaining part 128 and the mating terminal 20 do not contact each other when the connector 1 and the mating connector 2 are mated.

[0046] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved upon. The structures described in the various embodiments can be freely combined without causing structural or principle conflicts, and these changes should fall within the protection scope of this utility model.

[0047] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to illustrate preferred embodiments of the present invention and should not be construed as a limitation thereof.

[0048] While some embodiments of the general concept of this utility model have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the general concept of this utility model, the scope of which is defined by the claims and their equivalents.

[0049] It should be noted that the word "comprising" does not exclude other elements or steps, and the words "a" or "an" do not exclude multiple elements. Furthermore, any reference numerals in the claims should not be construed as limiting the scope of this invention.

Claims

1. A terminal, characterized in that, include: The terminal body has a centerline extending along its length. The soldering section is suitable for being soldered to the circuit board by solder balls; and An elastic portion is connected between the terminal body and the welding portion. The elastic portion is adapted to absorb vibration and shock to prevent the solder balls from breaking or falling off. When the solder ball is soldered to the solder joint, the centerline of the terminal body passes through the center of the solder ball.

2. The terminal according to claim 1, characterized in that: The elastic part includes a bent elastic arm, the two ends of which are respectively connected to the terminal body and the welding part.

3. The terminal according to claim 2, characterized in that: The elastic arm is arc-shaped, S-shaped, or V-shaped.

4. The terminal according to claim 1, characterized in that: The terminal body and the welding part are flat, and the welding part is spaced apart from one end of the terminal body and perpendicular to the terminal body.

5. The terminal according to claim 1, characterized in that: The terminal body includes: A fixing part, located at one end of the terminal body and connected to the elastic part, is used to fix the terminal to the connector housing.

6. The terminal according to claim 5, characterized in that: The terminal body also includes: The mating part, located at the other end of the terminal body, is used to mate with the mating terminals of the mating connector.

7. The terminal according to claim 6, characterized in that: The terminal body also includes: A guide portion, connected to the end of the mating portion and bent at a predetermined angle relative to the mating portion, is used to guide the terminal to mate with the mating terminal.

8. The terminal according to claim 7, characterized in that: The terminal is either a one-piece machined terminal or a one-piece stamped terminal.

9. A connector, characterized in that, include: The connector housing has terminal sockets. and The terminal according to any one of claims 6-8 is inserted into the terminal socket.

10. The connector according to claim 9, characterized in that: The connector housing has a retaining portion formed in the terminal socket, and the end of the guide portion of the terminal is retained in the retaining portion to hold the terminal in a predetermined position.

11. The connector according to claim 10, characterized in that: The lateral dimension of the retaining part is smaller than the opening diameter of the mating terminal of the mating connector, so that the retaining part does not contact the mating terminal when the connector is mated with the mating connector.

12. The connector according to claim 10, characterized in that: The connector housing includes: The base, wherein the terminal extends from a first side of the base to a second side in a first direction; and A protrusion extends from a second side of the base along the first direction, the terminal socket passes through at least a portion of the base and the protrusion, and the retaining portion is disposed at the end of the protrusion extending along the first direction.

13. The connector according to claim 12, characterized in that: When the connector mates with the mating connector, the retaining portion contacts the mating terminal before the terminal. The retaining part has a transition fillet between its end face perpendicular to the first direction and the side wall of the protrusion, which is used to reduce the insertion force when the connector and the mating terminals of the mating connector are mated and plugged in.

14. The connector according to claim 13, characterized in that: The insertion force is less than 0.5 Newtons.

15. The connector according to claim 9, characterized in that: The connector housing is a one-piece injection molded part.

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