WO2023185271A1

WO2023185271A1 - Multilayer elastic sheet staggered socket structure and connector

Info

Publication number: WO2023185271A1
Application number: PCT/CN2023/075597
Authority: WO
Inventors: 李刘生; 何德禄; 怀小宝; 郭辉; 韩见强; 李�昊; 顾钙琳; 周锦昌
Original assignee: 中航光电科技股份有限公司
Priority date: 2022-03-31
Filing date: 2023-02-13
Publication date: 2023-10-05
Also published as: CN217215206U

Abstract

A multilayer elastic sheet staggered socket structure and a connector. The socket structure comprises an outer housing (1), an insulating pressing plate (2), a base body copper bar connector (3) and two groups of oppositely arranged sheet-type contact members. The insulating pressing plate (2) is assembled and fixed inside the outer housing (1), the base body copper bar connector (3) is assembled and fixed inside the insulating pressing plate (2), one end of each of the two groups of oppositely arranged sheet-type contact members forms a socket for inserting a sheet-type inserting pin therein, and the other end thereof is fixed to the base body copper bar connector (3). According to the socket structure, multiple layers of elastic sheets are distributed in a staggered manner, such that the number of contact points can be effectively increased, and the current-carrying capability is improved. By additionally providing stainless steel elastic sheets (8) outside inner elastic sheets (6) and outer elastic sheets (7), positive pressure is provided for contact between the inner elastic sheets (6) and the outer elastic sheets (7) and sheet-type inserting pins, and the stability and reliability of contact are ensured. In addition, by means of the structural design of the outer housing (1), the insulating pressing plate (2) and the base body copper bar connector (3), the stability of the fixing of the sheet-type contact members and the base body copper bar connector (3) inside the outer housing (1) is further improved.

Description

A multi-layer shrapnel staggered distributed jack structure and connector

Technical field

The utility model relates to the technical field of connectors, specifically a multi-layer elastic sheet staggered distributed jack structure and a connector.

Background technique

As the core component of the connector, contacts are related to the current carrying capacity and reliability of the product. Currently, the commonly used contacts are round pins and round holes, most of which require machine processing, which results in low production efficiency and high cost. Moreover, due to their structural characteristics, after the current carrying capacity reaches a bottleneck, further improvement of the current carrying capacity is restricted. Compared with circular contacts, chip contacts have a longer circumference under the same cross-sectional area and can accommodate more contact contacts, so the contact resistance is smaller and the current carrying capacity is stronger; and chip contacts Contact parts can be copied and processed in batches through molds to achieve mass production. The production efficiency is high and the cost is low. It is more suitable for the mass production needs of the automotive industry.

The fixation of contacts in the connector is very important and affects the performance and reliability of the product. If the positioning of the contact piece in the connector is unreliable or the holding force is insufficient, the contact piece may shake or even fall off during use. Especially in vehicle-mounted connectors with frequent vibrations, the stability and reliability of the contact piece fixation are affected. Sex is more demanding. At present, there are two main ways of fixing contacts in connectors: removable and non-removable. Among them, the removable type is mostly used in the wiring harness end of the connector or in small-sized terminals; the non-removable type is mostly used in connector equipment. end or large size terminal.

The removable contact fixing structure is mostly elastically supported by shrapnel or fixed by pressing down the cover. This structure is generally complex and requires high matching accuracy. After repeated removal and removal, the structural strength will decrease. The existing fixation is not removable. Most of them are two mutually matching contacts and the housing that cooperate with each other through a keyway structure in the mating area to achieve forced installation and positioning. This forced installation structure requires the area where the contact and the housing fit to be enlarged. So that the two can be fully contacted and assembled. This method is mostly suitable for situations where the mating areas of the contact piece and the housing are of similar size. When the mating area sizes of the contact piece and the housing are quite different, the current fixing structure is not suitable.

Contents of the invention

In order to overcome the shortcomings of the existing technology, the present invention provides a multi-layer elastic sheet staggered distributed jack structure and connector. The multi-layer elastic sheet is staggered and distributed, which effectively increases the number of contact points and improves the current carrying capacity. By adding a stainless steel spring piece outside the outer spring piece, positive pressure is provided for the contact between the inner spring piece and the outer spring piece and the chip pin, ensuring the stability and reliability of the contact, thereby ensuring good conductivity. Through the structural design of the insulating pressure plate, the outer casing and the base copper bar connector, the stability of the chip contacts and the base copper bar connector in the outer casing is further increased, improving the quality and performance of the product.

The utility model is specifically realized through the following technical solutions. According to the utility model, a multi-layer elastic sheet staggered distributed jack structure is proposed, which at least includes an outer shell, a base copper bar connector, and two sets of oppositely arranged chip contacts. The base copper bus connector is fixed in the outer casing, and two sets of oppositely arranged chip contacts are assembled in the outer casing, one end of which forms a socket for plugging with the chip pins, and the other end Fixed with base copper bar connector.

Further, each group of chip contacts includes an inner spring piece, an outer spring piece and a stainless steel spring piece. In the socket formed by the two sets of chip contacts, the inner spring pieces of the two sets of oppositely arranged chip contacts are located on the innermost side for and The chip pins are plugged into each other, The stainless steel spring piece is located on the outermost side to provide stable positive pressure, and the outer spring piece is located between the inner spring piece and the stainless steel spring piece to increase the number of contact points with the blade pins.

Furthermore, the inner elastic piece, the outer elastic piece and the stainless steel elastic piece respectively include a first connection part, a second connection part and a third connection part for being fixed to the base copper bar connector. The first connection part, the second connection part A first elastic claw, a second elastic claw and a third elastic claw are respectively connected to the plug ends of the first and third connecting parts; a plurality of first elastic claws, a plurality of second elastic claws and a plurality of third elastic claws are respectively connected along the The first connecting part, the second connecting part, and the third connecting part are evenly arranged in the length direction, and the second elastic claws and the first elastic claws are staggered, and the third elastic claws correspond to the first elastic claws one by one and are pressed together. Used to provide stable positive pressure on the first jaw.

Furthermore, the first, second, and third elastic claws are respectively provided with first, second, and third contact portions that protrude toward the insertion hole direction. The first contact portion of the inner spring piece The second contact portion of the stainless steel spring piece and the second contact portion of the outer spring piece are staggered with each other, and the third contact portion of the stainless steel spring piece is pressed against the first spring claw.

Furthermore, the outer casing is also equipped with an insulating pressing plate, which is fixed to the outer casing by a keyway, and the base copper bar connector is assembled in the insulating pressing plate and fixed to the insulating pressing plate by a keyway.

Further, the insulating pressure plate includes a first pressure plate and a second pressure plate, and the inner wall of the first pressure plate and/or the second pressure plate for contacting the wide surface of the base copper bar connector is provided with a protrusion I, and the base copper bar connection member The wide surface of the piece is provided with a corresponding through hole I, and the base copper bar connector is assembled between the first pressure plate and the second pressure plate and fixed through the protrusion I and the through hole I;

The end surface of the first pressure plate for engaging with the second pressure plate is provided with a protrusion II or a groove II, and the end surface of the second pressure plate for engaging with the first pressure plate is provided with a corresponding groove II or protrusion II. The first pressure plate and the second pressure plate are fastened and fixed through the cooperation of the protrusion II and the groove II;

The outer shells of the first pressure plate and the second pressure plate are provided with protrusions III or through holes III, and the outer shells are provided with corresponding through holes III or protrusions III. The first pressure plate and the second pressure plate are fastened together to form an insulating pressure plate assembly. It is fixed in the cavity of the outer shell by the protrusion III and the through hole III.

In the above structure, the through hole I and the through hole III can also be replaced by a groove structure.

Further, the jack structure also includes a guide structure for guiding the protrusion III to engage with the through hole III. The guide structure and the through hole III are both provided on the outer shell or on the insulating pressure plate; the insulating pressure plate and the outer shell When the body is assembled, the protrusion III first passes through the guide structure and finally snaps into the through hole III.

Furthermore, the protrusion II has a columnar structure and has a C-shaped protrusion at its tail. Correspondingly, the groove II is a C-shaped groove. After the protrusion II snaps into the groove II, the first pressing plate and the second pressing plate are formed. The fastening between the pressure plates is fixed.

The utility model also provides a connector, which at least includes the multi-layer elastic sheet staggered distributed jack structure as mentioned above.

The utility model has the following beneficial effects:

The utility model adopts multi-layer elastic pieces staggeredly distributed, and the elastic claws of the inner elastic pieces and the outer elastic pieces are staggeredly distributed, both of which are in direct contact with the chip pins, effectively increasing the number of contact points and improving the current carrying capacity. By adding a stainless steel spring piece outside the outer spring piece, positive pressure is provided for the contact between the inner spring piece and the outer spring piece and the chip pin, ensuring the stability and reliability of the contact, thus ensuring good conductivity. The space between the mating area of the base copper bar connector and the outer casing is further filled with the insulating pressure plate. There is no need to enlarge the mating area between the base copper bar connector and the outer casing. Therefore, it is particularly suitable for the mating area of the base copper bar connector and the outer casing. The situation where the size difference is large.

This utility model further increases the number of The stability of the chip contacts and base copper bus connectors fixed in the outer casing improves the quality and performance of the product and meets certain earthquake resistance requirements. The elastic support structure of the shrapnel is avoided, and there are no excessive requirements on the product's matching accuracy and size matching; it can achieve effective positioning connection between the base copper bar connector and the insulating pressure plate.

Description of drawings

Figure 1 is a cross-sectional view of the utility model;

Figure 2 is a schematic diagram of the socket structure formed by the chip contact and the chip pin being connected;

Figure 3 is an exploded view of Figure 2;

Figure 4 is a schematic structural diagram of a chip contact;

Figure 5 is a schematic diagram of two sets of oppositely arranged chip contacts and base copper bar connectors fixed;

Figure 6 is a schematic diagram of the base copper bar connector after assembly with the outer shell and the insulating pressure plate;

Figure 7 is a cross-sectional view of Figure 6;

Figure 8 is an exploded view of Figure 6;

Figure 9 is a schematic diagram of the chip contact jack structure and the chip pin direct insertion and extraction;

Figure 10 is a schematic diagram of the chip contact jack structure and the chip pins being inserted and pulled out obliquely.

1-outer shell; 2-insulation pressure plate, 3-base copper bus connector, 4-piece pin, 5-fastener, 6-inner spring piece, 7-outer spring piece, 8-stainless steel spring piece, 9-first Connection part, 10-second connection part, 11-third connection part, 12-first elastic claw, 13-second elastic claw, 14-third elastic claw, 15-first contact part, 16-second contact part, 17-third contact part, 18-flange, 19-slotting, 20-first boss hole, 21-second boss hole, 22-shrapnel mounting hole, 23-fastener mounting hole, 24 -First pressure plate, 25-Second pressure plate, 26-Protrusion I, 27-Through hole I, 28-Protrusion II, 29-Groove II, 30-Protrusion III, 31-Through hole III, 32-C Type protrusion, 33-guide structure, 34-straight plug-in opening, 35-oblique plug-in opening.

Detailed ways

In order to better understand the content of the present utility model, the present utility model will be further described below in conjunction with specific embodiments and drawings. The following examples are implemented based on the technology of the present invention and provide detailed implementation modes and operating steps. However, the protection scope of the present invention is not limited to the following examples.

As shown in Figure 1, the multi-layered spring-clamp staggered distributed jack structure provided by the utility model at least includes an outer shell 1, an insulating pressure plate 2, a base copper bar connector 3, and two sets of oppositely arranged chip contacts. The insulating pressing plate is assembled in the outer casing and fixed with the outer casing by a keyway, the base copper bar connector is assembled in the insulating pressing plate and fixed between the insulating pressing plate by a keyway, and two sets of oppositely arranged chip contacts One end is formed into a socket for plugging into the blade pin 4, and the other end is fixed with the base copper bar connector through a fastener 5.

As shown in Figure 4, each set of chip contacts includes an inner spring piece 6, an outer spring piece 7 and a stainless steel spring piece 8. The inner spring piece and the outer spring piece are made of highly conductive copper materials or copper alloy materials, which are used to transmit large currents. The stainless steel spring pieces Made of highly elastic stainless steel material to provide stable positive pressure.

As shown in Figures 4 and 5, in the socket formed by two sets of chip contacts, the inner springs of the two sets of oppositely arranged chip contacts are located on the innermost side for insertion with the chip pins. The stainless steel springs Located on the outermost side to provide stable positive pressure, the outer spring piece is located between the inner spring piece and the stainless steel spring piece to increase the number of contact points with the blade pins. The inner elastic piece, the outer elastic piece and the stainless steel elastic piece respectively include a first connection part 9, a second connection part 10 and a third connection part 11 for being fixed to the base copper bar connector. The first connection part, the second connection part and the third connection part are The plug ends of the connection part are respectively connected with the first elastic claw 12 and the second elastic claw. Claw 13 and the third spring claw 14. A plurality of first elastic claws, a plurality of second elastic claws, and a plurality of third elastic claws are evenly arranged along the length direction of the first connection part, the second connection part, and the third connection part respectively, and the second elastic claws and the third elastic claws The first elastic claws are arranged in a staggered manner, and the third elastic claws correspond to the first elastic claws one-to-one and are pressed against the first elastic claws to provide stable positive pressure. The first, second and third elastic claws are respectively provided with a first contact portion 15, a second contact portion 16 and a third contact portion 17 that protrude toward the insertion hole direction. The first contact portion of the inner spring piece The second contact portions of the stainless steel spring pieces are staggered with each other, and the third contact portion of the stainless steel spring piece is pressed against the first spring claw. In the uninserted state, the distance between the two oppositely arranged first elastic claws and the distance between the two oppositely arranged second elastic claws are both smaller than the thickness of the chip pin. When the chip pin is inserted, The chip pin spreads the first elastic claw of the inner elastic piece and the second elastic claw of the outer elastic piece, increasing the force between the first elastic claw and the third elastic claw. The highly elastic stainless steel elastic piece is crimped and covered The inner spring piece and the outer spring piece provide stable holding force to the inner spring piece and the outer spring piece, increase the positive pressure between the first spring claw and the second spring claw and the piece pin, thereby ensuring that the first spring claw and the second spring claw The elastic contact between the spring claw and the chip pin ensures stability and reliability and maintains good conductivity. In this way, after the chip pin is inserted into the socket of the chip contact of the present invention, the first elastic claw of the inner elastic piece and the second elastic claw of the outer elastic piece are both in contact with the chip pin for current conduction. , thereby doubling the number of contact points and increasing the current carrying capacity.

Further, as shown in Figure 3, the first connecting part of the inner spring piece is processed with a flange 18. The flange matches the slot 19 at the corresponding position of the outer spring piece and the stainless steel spring piece, which facilitates the connection between the inner and outer spring pieces and the stainless steel spring piece. Preliminary assembly and positioning. In one embodiment, the first connection part of the inner elastic piece and the second connection part of the outer elastic piece are respectively provided with a first boss hole 20 and a second boss hole 21 protruding in the direction of the copper bar connector of the base body. The boss hole is used to insert into the elastic piece mounting hole 22 of the base copper bar connector, the second boss hole is used to insert into the first boss hole to achieve pre-assembly of the inner and outer elastic pieces, and the third connection part of the stainless steel elastic piece is provided There is a fastener mounting hole 23 for corresponding to the second boss hole and for fastening the inner and outer elastic pieces of the two sets of chip contacts, the stainless steel elastic pieces and the base copper bar connector through fasteners.

As shown in Figures 6-8, the base copper bar contact is assembled in an insulating pressing plate. The insulating pressure plate includes a first pressure plate 24 and a second pressure plate 25. In one embodiment, the inner wall of the first pressure plate for contacting the wide surface of the base copper bar connector is provided with a protrusion I26, and the inner wall of the base copper bar connector is provided with a protrusion I26. A corresponding through hole I27 is provided on the wide surface, and the base copper bar connector is assembled between the first pressure plate and the second pressure plate and is positioned and fixed through the protrusion I and the through hole I.

Further, the end surface of the first pressure plate for engaging with the second pressure plate is provided with a protrusion II28, and the end surface of the second pressure plate for engaging with the first pressure plate is provided with a corresponding groove II29. The two pressing plates are buckled together to form an insulating pressing plate and are fastened and fixed through the cooperation of the protrusion II and the groove II. The outer shells of the first pressure plate and the second pressure plate are also provided with protrusions III30, and the outer shells are provided with corresponding through holes III31. The insulating pressure plate is assembled in the cavity of the outer shell and positioned through the protrusions III and through holes III. fixed. Through the above structure, the base copper bar connector and the chip contact socket fixedly connected to the base copper bar connector can be stably assembled in the outer casing.

Further, in the above embodiment, the positions of the protrusion I26 and the through hole I27 can be interchanged. Similarly, the positions of the protrusion II and the groove II and the protrusion III and the through hole III can also be interchanged. Through hole I and through hole III can also be replaced by groove structures.

Further, protrusions II and grooves II can be provided on the end surface of the first pressure plate for engaging with the second pressure plate, and corresponding grooves II and protrusions can be provided on the end surface of the second pressure plate for engaging with the first pressure plate. II. After the first pressure plate and the second pressure plate are fastened, they are fastened to each other through the corresponding protrusions II and grooves II to form an insulating pressure plate, as shown in Figure 6. The protrusion II can be a columnar structure with a C-shaped protrusion 32 at its tail. Correspondingly, the groove II is a C-shaped groove. After the protrusion II is inserted into the groove II, the gap between the first pressure plate and the second pressure plate can be realized. Snap-fastened.

Furthermore, when the insulating pressure plate and the outer shell are assembled, the guide structure 33 can also be used to guide the engagement of the protrusion III and the groove III or the protrusion III and the through hole III. The guide structure is in contact with the groove III or the through hole III. are set on the outer casing or both Place on the insulating pressure plate. In the embodiment shown in Figure 8, the guide structure is a bevel and is provided with the through hole III on the outer shell. Correspondingly, the protrusion III has a bevel structure and a boss structure higher than the insulating pressure plate. The insulating pressure plate is connected to the outer shell. When the body is assembled, the protrusion III first passes through the guide structure and finally snaps into the through hole III.

On the basis of the above embodiment, the inner walls of the first pressure plate and the second pressure plate used to contact the wide surface of the base copper bar connector are both provided with protrusions I. During assembly, the protrusions I on the two pressure plates are both Snap it into the through hole I on the base copper bar connector to achieve the fixation between the insulating pressure plate and the base copper bar connector, as shown in Figure 7.

In the example shown in Figure 1, the outer casing is also equipped with a sealing ring. The sealing ring is assembled between the rear end of the chip contact and the insulating pressure plate. The insulating pressure plate serves as a support to prevent axial displacement of the sealing ring.

In the embodiment shown in Figures 1 and 7, the plug-in end of the outer shell is provided with an opening 34 for straight plug-in and pull-out and an opening 35 for oblique plug-in and pull-out, so that the plug-in plug formed by the chip contact of the present invention is The hole structure can be used for direct insertion and extraction with the chip pins, or for oblique insertion and extraction with the chip pins. The straight insertion and extraction form is shown in Figure 9, and the oblique insertion and extraction form is shown in Figure 10.

The utility model also provides a socket connector including the above-mentioned jack structure, which can be plugged and connected with a plug connector including blade pins.

The above are only embodiments of the present invention and do not limit the present invention in any form. The present utility model can also have other forms of embodiments based on the above structures and functions, which will not be listed one by one. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model by any skilled person familiar with the present invention without departing from the technical scope of the present utility model still belong to the technology of the present utility model. within the scope of the program.

Claims

A multi-layer elastic sheet staggered distributed jack structure is characterized by at least including an outer shell (1), a base copper bar connector (3), and two sets of oppositely arranged chip contacts. The base copper bar connector (3 ) is fixed in the outer casing (1). Two sets of oppositely arranged chip contacts are assembled in the outer casing (1). One end of one end forms a socket for inserting with the chip pin (4), and the other end Fixed with base copper bar connector.
The multi-layer elastic piece staggered distributed jack structure according to claim 1, characterized in that each group of chip contacts includes an inner elastic piece (6), an outer elastic piece (7) and a stainless steel elastic piece (8). In the socket formed by the contact piece, the inner spring piece (6) of the two opposite sets of chip contacts is located on the innermost side for plugging with the chip pins, and the stainless steel spring piece (8) is on the outermost side for providing stable contact. Positive pressure, the outer spring piece (7) is located between the inner spring piece and the stainless steel spring piece.
The multi-layer elastic piece staggered distributed jack structure according to claim 2, characterized in that the inner elastic piece, the outer elastic piece and the stainless steel elastic piece respectively include a first connecting part (9), a second connecting part for fixing to the base copper bar connector. The connecting part (10) and the third connecting part (11), the plug-in ends of the first connecting part, the second connecting part and the third connecting part are respectively connected with the first elastic claw (12) and the second elastic claw (13) and a third elastic claw (14); a plurality of first elastic claws, a plurality of second elastic claws, and a plurality of third elastic claws are evenly arranged along the length direction of the first connecting part, the second connecting part, and the third connecting part respectively. cloth, and the second elastic claws and the first elastic claws are arranged in a staggered manner, and the third elastic claws correspond to the first elastic claws one-to-one and are pressed against the first elastic claws to provide stable positive pressure.
The multi-layer spring clip staggered and distributed jack structure according to claim 3, characterized in that the first spring claw, the second spring claw and the third spring claw are respectively provided with first contact portions protruding toward the jack direction ( 15), the second contact part (16) and the third contact part (17), the first contact part of the inner spring piece and the second contact part of the outer spring piece are staggered, and the third contact part of the stainless steel spring piece is pressed against the third contact part. A bullet on the claw.
The multi-layer elastic sheet staggered distributed jack structure according to claim 1 or 2, characterized in that the outer shell (1) is also equipped with an insulating pressing plate (2), and the insulating pressing plate (2) and the outer shell (1) The base copper bar connector (3) is assembled in the insulating pressure plate (2) and fixed with the insulating pressure plate.
The multi-layer elastic sheet staggered distributed jack structure according to claim 5, characterized in that the insulating pressure plate includes a first pressure plate (24) and a second pressure plate (25), and the first pressure plate and/or the second pressure plate are used to contact the base body. The inner wall of the copper bar connector (3) in contact with the wide surface is provided with a protrusion I (26), and the wide surface of the base copper bar connector is provided with a corresponding through hole I (27). The base copper bar connector is assembled on the third The first pressure plate and the second pressure plate are fixed through the protrusion I and the through hole I;

The first pressure plate is provided with protrusions II (28) or grooves II (29) on its end surface for engaging with the second pressure plate, and the second pressure plate is provided with corresponding grooves on its end surface for engaging with the first pressure plate. II (29) or protrusion II (28), the first pressure plate and the second pressure plate are fastened and fixed through the cooperation of protrusion II and groove II;

The outer shells of the first pressure plate and the second pressure plate are provided with protrusions III (30) or through holes III (31), and the outer shells are provided with corresponding through holes III (31) or protrusions III (30). The insulating pressure plate formed by the fastening of the pressure plate and the second pressure plate is assembled in the cavity of the outer shell and fixed through the cooperation of the protrusion III and the through hole III.
The multi-layer elastic sheet staggered distributed jack structure as claimed in claim 6, characterized in that through holes I and through holes III are replaced by groove structures.
The multi-layer elastic sheet staggered distributed jack structure according to claim 6, characterized in that it also includes a guide structure (33) for guiding the protrusion III to engage with the through hole III, and the guide structure and the through hole III are both provided They are all arranged on the outer casing or on the insulating pressing plate; when the insulating pressing plate is assembled with the outer casing, the protrusion III first passes through the guide structure and finally gets stuck into the through hole III.
The multi-layer elastic sheet staggered distributed jack structure as claimed in claim 6, characterized in that the protrusion II is a columnar structure and has a C-shaped protrusion at its tail. Correspondingly, the groove II is a C-shaped groove, and the protrusion II is a C-shaped groove. After being clicked into the groove II, the first pressure plate and the second pressure plate are buckled and fixed.
A connector, comprising the multi-layer elastic sheet staggered distributed jack structure according to any one of claims 1-9.