CN118198795A - Small size and high current electrical connector and its matching connector - Google Patents

Abstract

The small-size high-current electric connector and the adapting connector thereof comprise an insulator and a contact piece inserted in the insulator, wherein the insulator is provided with a locking groove extending along the inserting direction of the connector, the locking groove is used for being matched and locked with a locking claw on the adapting connector, the insulator is also provided with a sliding pressing plate sliding in the inserting direction, and when the locking claw on the adapting connector is matched with the locking groove, the sliding pressing plate can slide to a locking position for preventing the locking claw on the adapting connector from being separated from the locking groove; the side wall of the insulator is provided with a limit reinforcing groove extending along the opposite inserting direction, and the limit reinforcing groove is sleeved on a limit reinforcing rib in the cavity of the adapter connector in a sliding manner. The small-size high-current electric connector and the adapter connector thereof have small size and high space utilization rate, and are beneficial to the miniaturization development of the server; when the plug and the socket are matched, the unlocking in the operation in a narrow space is facilitated; shaking can be prevented after the insertion.

Description

Small size and high current electrical connector and its matching connector

Technical Field

The invention belongs to the technical field of connectors, and in particular relates to a small-volume, high-current electric connector and an adapter connector thereof.

Background technique

Currently, server board connectors are generally larger in size to ensure flow capacity.

The same type of electrical connector products generally use unlocking structures such as side press locking and locking buckles that require close-range operation.

The inter-board connector using the above structure has the following disadvantages:

Under high current conditions, the connector is too large, which is not conducive to the miniaturization and integration of servers;

When the plug and socket are mated, locking structures such as side-press locking and locking bayonet are not conducive to unlocking in narrow spaces;

After the plug and the socket are connected, they are prone to sideways shaking, which can easily cause damage to the plug and the socket.

Summary of the invention

In order to solve the above technical problems, the present invention provides a small-volume, high-current electrical connector and an adapter connector thereof.

The object of the present invention is achieved by adopting the following technical solutions: According to the small-volume, high-current electrical connector proposed by the present invention, the side wall of the insulator matching the adapter connector is provided with a limiting reinforcement groove extending along the plugging direction.

Furthermore, it includes an insulator and a contact piece inserted in the insulator, the insulator is provided with a locking groove extending along the plug-in direction of the connector, the locking groove is used to cooperate and lock with the locking claw on the adapter connector, and the insulator is also provided with a sliding pressure plate that slides in the plug-in direction, when the locking claw on the adapter connector cooperates with the locking groove, the sliding pressure plate can slide to a locking position to prevent the locking claw on the adapter connector from escaping from the locking groove.

Furthermore, the side wall of the locking groove is provided with a clamping groove for clamping engagement.

Furthermore, the insulator is provided with an elastic member which enables the sliding pressure plate to have a tendency to move toward the plug-in end.

Furthermore, a stop structure is provided at the end of the insulator away from the plug-in end, and a stop extending in the plug-in direction is provided on the side of the stop structure facing the plug-in end. A groove is provided on the side of the sliding pressure plate away from the plug-in end, and the groove and the stop can move relative to each other. A spring is provided in the groove, one end of which rests on the stop end face and the other end rests on the side wall of the groove close to the plug-in end.

Furthermore, the outer surface of the insulator is provided with an inner slide groove extending along the plug-in direction and connected to the locking groove, and an outer slide groove located on both sides of the inner slide groove and extending along the plug-in direction. The side walls of the inner slide groove are provided with inner slide rails extending along the plug-in direction, and the side walls of the outer slide groove are provided with outer slide rails extending along the plug-in direction. The sliding pressure plate is slidably arranged in the inner slide groove and the outer slide groove, and slidably cooperates with the outer slide rail and the inner slide rail. A stopper is provided on the inner slide rail and the outer slide rail to limit the moving range of the sliding pressure plate, and the sliding pressure plate cooperates with the outer slide groove so that the two side surfaces of the sliding pressure plate do not protrude from the two side surfaces of the insulator.

Furthermore, the end of the sliding pressure plate away from the plug-in end is connected to a drawstring.

Furthermore, the insulator has a cavity extending along the plug-in direction, and a mounting groove for inserting the contact piece is arranged in the cavity, and the contact piece is a sheet-type contact piece; a limiting groove is arranged on the sheet-type contact piece, and the extending direction is perpendicular to the plug-in direction. After the sheet-type contact piece is inserted into the mounting groove, a plug block is inserted into the limiting groove, and the plug block is simultaneously inserted and matched with the insulator.

Furthermore, the portion of the sheet contact away from the plug-in end is bent, and the bent portion is provided with a pin extending out of the insulator and connected to the PCB board.

The adapter connector of the small-volume and high-current electric connector has an inner wall of the insulator provided with a limiting reinforcing rib extending along the plugging direction.

Furthermore, it includes an insulator, a contact piece inserted in the insulator, a locking claw inserted in the insulator, the locking claw includes a claw extending in the plug-in direction, a claw protrusion for snap-fitting is provided on one side of the claw, and a space is left on the other side.

Furthermore, the contact piece is a bent structure, one side of which is a spring claw that contacts the matching contact piece, and the other side is provided with a first socket pin that passes through the insulator and is not parallel to the plug-in direction, and the first socket pin is connected to the PCB board.

Furthermore, the plug-in end of the contact piece is a spring claw in contact with the contact piece, and a second socket pin extending in a direction opposite to the plug-in direction is arranged on one side of the socket structure away from the plug-in end, and the second socket pin is connected to the PCB board.

Furthermore, the contact piece is forcibly installed in the cavity of the insulator through barbs, and the width of the cavity of the insulator at the insertion entrance end matches the thickness of the socket structure.

Compared with the prior art, the present invention is beneficial in that:

After the connector and the adapter connector are plugged in, the tight fit between the limiting reinforcement rib and the limiting reinforcement groove prevents the connector and the adapter connector from lateral shaking, thereby preventing damage to the connector.

The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1a is a schematic diagram of an embodiment of a wiring plug of the present invention;

FIG1b is a schematic diagram of an embodiment of a welding plate plug of the present invention;

FIG1c is a schematic diagram of an embodiment of a bent welding plate socket of the present invention;

FIG1d is a schematic diagram of an embodiment of a vertical welding board socket of the present invention;

FIG2a is an exploded schematic diagram of an embodiment of a wiring plug of the present invention;

FIG2b-1 is a schematic diagram of the plug insulator in FIG2a and the locking claw at the socket end;

FIG2b-2 is a schematic diagram of the plug insulator, the sliding pressure plate, the pull belt and the locking claw at the socket end after being plugged in FIG2a;

FIG. 2c-1 is a schematic diagram of the assembly of the plug insulator and the sliding pressure plate in FIG. 2a ;

Fig. 2c-2 is a side view of Fig. 2c-1;

Fig. 2c-3 is a cross-sectional view of point A in Fig. 2c-2;

FIG. 2d-1 is a top view of the plug insulator in FIG. 2a ;

FIG2d-2 is a bottom view of the sliding plate in FIG2a;

FIG2d-3 is a half-sectional view of an embodiment of a wiring plug of the present invention in an initial state;

FIG2d-4 is a half-sectional view of an embodiment of the wiring plug of the present invention in an unlocked state;

FIG2e-1 is an overall schematic diagram of an embodiment of a wiring plug of the present invention;

Figure 2e-2 is an enlarged schematic diagram of point B in Figure 2e-1;

FIG3 is an exploded schematic diagram of an embodiment of a welding plate plug of the present invention;

FIG4a is an exploded schematic diagram of an embodiment of a bent welding plate socket of the present invention;

FIG4b is a schematic diagram of the plug-in connection between the jack structure in FIG4a and the contact piece at the plug end;

FIG5a is an exploded schematic diagram of an embodiment of a vertical welding board socket of the present invention;

FIG5 b is a rear view of an embodiment of a vertical welding board socket of the present invention;

FIG6a is a schematic diagram of the connection plug and the bent welding plate socket of the present invention being plugged into each other;

FIG6 b is a schematic diagram of the wiring plug and the vertical welding board socket of the present invention being plugged into each other;

FIG6c is a schematic diagram of the welding plate plug and the bent welding plate socket according to the present invention being plugged into each other;

FIG. 7 is a schematic diagram of an insulator in an embodiment of a bent welding plate socket of the present invention.

[Reference Signs]

11-wiring plug, 12-welding board plug, 101-first plug insulator, 10101-locking groove, 10102-card slot, 10103-stop structure, 10104-outer slide rail, 10105-stop platform, 10106-stop, 10107-inner slide rail, 10108-installation groove, 10109-inner slide groove, 10110-outer slide groove, 10111-stop end face, 102-first contact piece, 10201-limiting groove I, 103-first contact piece, 10301-limiting groove II, 104-block, 105-sliding pressure plate, 10501-locking protrusion, 10502-groove, 106-spring, 107-pull belt, 108-second plug insulator, 109-second contact piece, 1 10-second contact piece, 111-plug pin, 112-rib plate, 113-limiting reinforcement groove, 114-locking end, 21-bent welding board socket, 22-vertical welding board socket, 201-first socket insulator, 20101-mounting hole, 202-first socket structure, 203-first socket structure, 204-locking claw, 20401-claw, 20402-claw protrusion, 20403-mounting cantilever, 20404-mounting protrusion, 205-second socket insulator, 206-second socket structure, 207-second socket structure, 208-first socket pin, 209-second socket pin, 210-elastic claw, 211-limiting reinforcement rib, 3-horizontal PCB board, 4-vertical PCB board, 5-cable.

Detailed ways

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 described embodiments 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 creative work are within the scope of protection of the present invention.

As shown in Fig. 1a to Fig. 1d, the small-volume, high-current electrical connector of the present invention includes two embodiments, namely, a wiring plug 11 and a welding board plug 12 at the plug end, and the socket adapted to the small-volume, high-current electrical connector also includes two embodiments, namely, a bent welding board socket 21 and a vertical welding board socket 22 at the socket end. The embodiments of the wiring plug 11, the welding board plug 12, the bent welding board socket 21, and the vertical welding board socket 22 are described below. In other embodiments, the structure of the plug end can be swapped with the structure of the socket end as needed, which will not be repeated here.

The structure of the wiring plug 11 is shown in FIG. 2a to FIG. 2d-4, and is described by taking the orientation shown in the figure as an example, and includes a first plug insulator 101, a sliding pressure plate 105, a plug contact, a plug block 104, a spring 106, and a pull band 107. In this embodiment, the plug contact includes a first contact 102 and a first contact 103. The plug end of the first plug insulator 101 has an opening, and the plug contact extends out of the cavity in the first plug insulator 101, so that the plug contact in the first plug insulator 101 is plugged into the socket structure. The other end of the first plug insulator 101 away from the plug end has an opening for the cable 5 to be inserted, and the cable is connected to the plug contact after being inserted.

The upper part of the first plug insulator 101 has a locking portion extending in the plugging direction, and the locking portion cooperates with the sliding pressure plate 105 to achieve plugging and locking with the locking claw 204 on the socket, as shown in Figure 2b-2. The locking portion has a locking groove 10101 extending in the plugging direction, and the locking groove 10101 is located at the plugging end of the first plug insulator 101 and penetrates to the plugging end surface of the first plug insulator 101. The two side walls of the locking groove 10101 are provided with a card slot 10102, and when plugged into the socket, the locking claw 204 at the socket end is inserted into the card slot 10102.

An inner slide groove 10109 connected to the locking groove 10101 and extending in the plugging direction is also provided on the upper part of the first plug insulator 101, and both side walls of the inner slide groove 10109 are provided on inner slide rails 10107 extending in the plugging direction, and a stop structure 10103 is provided at the end of the inner slide groove 10109 away from the plugging end, and outer slide grooves 10110 are provided on both sides of the inner slide groove 10109 on the upper part of the first plug insulator 101, and the side walls of the outer slide groove 10110 are provided on outer slide rails 10104 extending in the plugging direction. The sliding plate 105 is slidably arranged in the inner slide groove 10109 and the outer slide groove 10110 at the same time, and is slidably matched with the inner slide rail 10107 and the outer slide rail 10104. The slidably matched structure can be a slot-block structure, that is, the block on the sliding plate 105 slides in the slots on the inner slide rail 10107 and the outer slide rail 10104, or the slot on the sliding plate 105 wraps and slides on the block on the inner slide rail 10107 and the outer slide rail 10104. Stoppers 10105 are provided at both ends of the outer slide rail 10104 and the inner slide rail 10107 to limit the moving range of the sliding plate 105. The cooperation between the insulator and the sliding pressure plate 105 ensures the stability of the function of the sliding pressure plate 105 on the basis of miniaturization of the connector. The locking function will not be unstable due to the reduction of the structure related to the locking function (including the inner slide groove 10109, the outer slide groove 10110, the inner slide rail 10107, the outer slide rail 10104, the locking groove 10101, and the card slot 10102) due to the small size of the connector. At the same time, the inner slide rail 10107 and the outer slide rail 10104 can prevent the sliding pressure plate 105 from being separated from the plug insulator during assembly, thereby achieving basic fixation.

The outer slide grooves 10110 are arranged on both sides of the first plug insulator 101, and the lower part of the sliding plate 105 matches the outer slide grooves 10110 and slides with the outer slide rails 10104. In this embodiment, the two side surfaces of the sliding plate 105 are aligned with the two side surfaces of the first plug insulator 101. This structure can greatly reduce the size of the sliding plate 105 in the width direction. At this time, the width of the sliding plate 105 is consistent with the width of the first plug insulator 101, which reduces the volume of the connector and is beneficial to the space utilization of the server where the connector is located.

The stop structure 10103 includes two parallel stops 10106, which extend along the plug-in direction and face the plug-in end. In other embodiments, one or more stops 10106 may also be provided. The lower part of the sliding plate 105 matching the inner slide groove 10109 is provided with a channel 10502 and a cavity matching the stop structure 10103 to accommodate the stop structure 10103. The channel 10502 extends in the plug-in direction and penetrates the sliding plate 105 at the end away from the plug-in end. The inner package of the channel 10502 is arranged on the stop 10106, and a spring 106 is arranged in the channel 10107. One end of the spring 106 abuts against the side wall of the channel 10107 close to the plug-in end, and the other end abuts against the end face of the stop 10106.

Due to the miniaturization of the connector, the spring 106 is small in size and diameter. When the spring 106 is compressed, due to the processing error of the spring 106 itself, the connector structure error and other reasons, and the spring 106 is still deformed when subjected to a small force. Therefore, when the spring 106 is subjected to a compressive force, even if the direction of the compressive force is made to coincide with the axis of the spring 106 as much as possible, it is still possible that the spring 106 is subjected to an external force that does not coincide with its axis, thereby causing the spring 106 to bend. When the spring 106 is bent to a certain extent, it is easy for the spring 106 to be plastically deformed or stuck inside the connector, so that the spring 106 cannot move the sliding pressure plate 105 toward the plug-in end, so that the sliding pressure plate 105 cannot play a locking role. Therefore, in this embodiment, the spring 106 is limited in the groove 10502 to prevent the spring 106 from bending when subjected to other external forces, so that the spring 106 will only be compressed in the extension direction of the groove 10502 when subjected to a compressive force, thereby preventing the spring 105 from failing due to the bending of the spring 106. At the same time, the groove 10502 is matched with the stopper 10106, and the stopper 10106 is moved and penetrated in the groove 10502, so that the stopper 10106 moves along the extension direction of the groove 10502, so that when the sliding pressure plate 105 is moved, a compressive force can be applied to the spring 106 along the extension direction of the groove 10502, and the force direction of the spring 106 is limited to prevent the spring 106 from being affected by external forces. In other embodiments, the spring 106 can also use other elastic members, such as elastic gaskets superimposed in the extension direction.

In other embodiments, a groove 10502 with an opening toward the plug-in end and extending in the plug-in direction can be provided on the stop structure 10103. The groove 10502 can be set as a blind hole, and the spring 106 is inserted in the blind hole. A stop 10106 extending in a direction away from the plug-in end is provided on the sliding pressure plate 105. The stop 10106 is slidably inserted in the blind hole, and one end of the spring 106 abuts against the bottom surface of the blind hole and the other end abuts against the end surface of the stop 10106. The above-mentioned technical effect of limiting the spring 106 can also be achieved.

In another embodiment, a stopper 10106 extending toward the plug-in end is provided on the stopper structure 10103, and the spring 106 is sleeved on the stopper. A groove 10502 is provided on the sliding pressure plate 105, and the stopper 10106 moves through the groove 10502. One end of the spring 106 abuts against a stop end face 10111 of the stopper structure 10103 close to the plug-in end, and the other end abuts against an end face of the sliding pressure plate 105 away from the plug-in end, and the spring 106 is limited by the stopper 10106.

In yet another embodiment, a stopper 10106 extending toward the plug-in end is provided on the stopper structure 10103, and the stopper 10106 is slidably provided in a groove 10502 on the sliding pressure plate 105. One end portion of the spring 106 can be sleeved and fixed on the stopper 10106, and the other end abuts against a side wall of the groove 10502 close to the plug-in end. The spring 106 is entirely provided in the groove 10502 to limit the spring 106.

In another embodiment, when the overall structure of the connector is larger, the spring 106 is larger in size and less likely to deform, and the stopper 10106 on the stopper structure 10103 and the groove 10502 on the sliding pressure plate 105 can be cancelled. The sliding pressure plate 105 is slidably arranged on the first plug insulator 101, and the spring 106 is arranged between the stopper structure 10103 and the sliding pressure plate 105. One end of the spring 106 abuts against the end surface of the sliding pressure plate 105 away from the plug-in end, and the other end abuts against the end surface of the stopper structure 10103 close to the plug-in end.

A locking protrusion 10501 is set at the end of the sliding pressure plate 105 close to the plug-in end. When the locking claw 204 is inserted into the slot 10102, the sliding pressure plate 105 slides toward the plug-in end under the elastic force of the spring 106, and the locking protrusion 10501 is inserted between the two claws 20401 of the locking claw 204. The locking protrusion 10501 is in a locking position to prevent the claw 20401 from moving out of the slot 10102, thereby realizing the locking of the plug and the socket and ensuring the reliability of the connection in the wire-to-board scenario.

A drawstring 107 is provided at the end of the sliding pressure plate 105 away from the plug-in end, one end of the drawstring 107 is connected to the sliding pressure plate 105, and the other end is a handle for easy operation. During the unlocking process of the plug and the socket, the drawstring 107 is pulled to drive the sliding pressure plate 105 to move in the opposite direction of the plug-in direction, overcoming the elastic force of the spring 106. At this time, the stopper 10106 cooperates with the groove 10107 to limit the spring 106, and the locking protrusion 10501 is disengaged from the locking claw 204. The locking claw 204 is freed from the restriction of the locking protrusion 10501, and the plug end can be pulled out. Before plugging the plug into the socket, first pull the drawstring 107 in the opposite direction of the plugging direction to provide space for the locking claw 204 to be inserted into the locking groove 10101, then insert the locking claw 204 into the locking groove 10101, and snap the claw 20401 into the snap groove 10102. Then release the drawstring 107, the sliding pressure plate 105 returns to the original position due to the release of the potential energy of the spring 106, and the locking protrusion 10501 snaps into the locking claw 204 to achieve locking. The drawstring 107 can be used to lock and unlock a small space.

The sliding rails and stop structure 10103 inside and outside the first plug insulator 101 cooperate with the sliding pressure plate 105 and its groove 10502 and the spring 106 to prevent the sliding pressure plate 105 from falling out. At the same time, it avoids the situation in which the stops, pull rods, insulators and locking structures of the same type of electrical connectors are currently used separately. No additional pull rod is required, which not only reduces the number of parts, but also further reduces the size of the connector.

The first contact installed in the first plug insulator 101 is a sheet contact, including a first contact 102 and a first contact 103, which are symmetrically arranged. The first contact 102 and the first contact 103 are respectively inserted vertically into the mounting groove 10108 of the inner cavity of the first plug insulator 101 along the plugging direction. The first contact 102 and the first contact 103 are respectively provided with a limit groove I 10201 and a limit groove II 10301, and the extension direction of the limit groove is perpendicular to the plugging direction. The inner cavity of the first plug insulator 101 is provided with a rib plate 112 separating the two contacts, and the rib plate 112 extends out of the cavity of the first plug insulator 101, and forms a guide structure at the end when the plug and the socket are plugged in. The mounting groove 10108 extends out of the cavity of the first plug insulator 101 along with the rib plate 112. After the two first contacts are inserted into the corresponding installation grooves 10108, the plug block 104 is inserted into the limit groove I 10201, the hole on the rib plate 112, and the limit groove II 10301 in sequence to achieve the front and rear position limitation. When the wiring plug is plugged into the socket, the first contact is inserted into the socket structure of the socket. The tail of the first contact is welded and electrically connected to the cable 5 to achieve current transmission.

After the wiring plug is plugged into the corresponding socket, the first contact pieces 102 and 103 are plugged into the corresponding contact pieces in the socket and the two are elastically connected. The contact pieces in the wiring plug form a pin structure, and the contact pieces in the socket form a socket structure. In order to ensure that the wiring plug and the socket are firmly plugged in a vibration environment after being plugged in, the socket structure in the socket is usually composed of spring claws located on both sides of the socket. After being plugged in with the contact pieces of the wiring plug, the contact pieces of the wiring plug are elastically clamped. The upper part of the wiring plug close to the plugging end is the locking end 114. After the wiring plug and the socket are plugged in, the locking end 114 is located in the cavity of the socket, and the locking claw in the socket cooperates with the locking groove 10101 at the top of the locking end 114 to achieve locking. The locking claw cooperates with the locking groove 10101 to prevent the socket from being disengaged. It can be seen that after the wiring plug is plugged into the corresponding socket, the first contact piece 102 and the first contact piece 103 are elastically connected to the socket, and the locking end 114 of the wiring plug is inserted into the cavity of the socket to achieve locking in the plugging direction. However, the locking end 114 is prone to shaking in the cavity of the socket, thereby causing the wiring plug to shake in the socket. During the shaking process, the wiring plug and the socket are easily damaged in the lateral direction (a direction perpendicular to the plugging direction). Therefore, the present application provides a limiting reinforcement groove 113 extending along the plugging direction on both side walls of the locking end 114, and the opening of the limiting reinforcement groove 113 is located on the end face of the locking end, as shown in Figures 2e-1 and 2e-2. Correspondingly, limiting reinforcement ribs 211 extending along the plugging direction are provided on both side walls of the cavity of the socket, and the limiting reinforcement ribs 211 are protrudingly provided on the inner side wall of the socket, as shown in Figure 7. During the process of plugging the wiring plug into the corresponding socket, the limiting reinforcement groove 113 is slidably nested on the limiting reinforcement rib 211. After plugging, the limiting reinforcement groove 113 and the limiting reinforcement rib 211 limit each other in the lateral direction, and at the same time cooperate with the locking groove and locking claw to achieve all-round limiting of the wiring plug and the socket, preventing the wiring plug and the corresponding socket from shaking. In order to prevent shaking, the limiting reinforcement groove 113 and the limiting reinforcement rib 211 need to be closely matched. In order to make the limiting reinforcement rib 211 slide and insert into the limiting reinforcement groove 113, the two are clearance matched. However, in order to prevent shaking, the clearance between the two needs to be very small. Therefore, in order to facilitate the insertion, the opening of the limiting reinforcement groove 113 is chamfered. In the insertion direction, the opening of the limiting reinforcement groove 113 gradually increases. The insertion end of the limiting reinforcement rib 211 is also chamfered. In the insertion direction, the outer diameter of the insertion end of the limiting reinforcement rib 211 gradually decreases, which is convenient for the insertion of the two. After the insertion, the limiting reinforcement rib 211 and the limiting reinforcement groove 113 are closely matched to achieve the effect of preventing shaking. A notch 11301 is set at the bottom of the opening of the limiting reinforcement groove 113. When the wiring plug and the socket are inserted, the upper side wall of the opening of the limiting reinforcement groove 113 is first overlapped on the corresponding limiting reinforcement rib 211, and then the wiring plug is inserted, so that the insertion operation is softer and smoother. If there is no notch 11301, when the wiring plug and the socket are inserted obliquely, the limiting reinforcement groove 113 and the limiting reinforcement rib 211 in the socket will interfere with each other, affecting the smoothness of insertion. In serious cases, excessive force may cause damage to the wiring socket and the corresponding socket.

The structure of the solder plate plug is shown in FIG3 , and includes a second plug insulator 108, a second contact, and a plug block 104. The second contact is a sheet-type contact, including a second contact 109 and a second contact 110. The portion of the second contact away from the plug end is bent to form a U-shape to reduce the size of the plug, and the bent portion is provided with a plug pin 111 whose extension direction is perpendicular to the plug direction. The plug pin 111 extends from the lower part of the second plug insulator 108 after the second contact is installed. The installation method of the second contact in the second plug insulator 108 is the same as the installation method of the first contact. The second contact is vertically inserted into the installation groove in the cavity of the second plug insulator 108, and the second contact is separated by a rib plate 112. The rib plate 112, the installation groove, and the second contact extend out of the cavity of the second plug insulator 108 to facilitate plugging in the socket, and the movement in the plug direction is limited by the plug block 104 to ensure the reliability of the product. The part of the second contact away from the plug end is bent into a U-shaped structure, and a gap is left between the two sides of the U-shaped structure, leaving enough space for the installation of the plug block 104. The front end of the second plug insulator 108 is plugged into the socket, and the lower end is welded to the PCB board through the plug pin 111 of the second contact to form a flow. The upper part of the second plug insulator 108 is provided with a structure for cooperating with the locking claw 204. The structure of the second plug insulator 108 cooperating with the locking claw 204 is similar to the structure of the first plug insulator 101 cooperating with the locking claw 204. Since the welding board connector is welded to the PCB board, no locking structure is required to ensure that the plug and the socket will not move relative to each other. Therefore, the upper part of the second plug insulator 108 only needs to be provided with a locking groove 10101 and a card groove 10102 for the locking claw 204 to be inserted. In other embodiments, if the welding board plug moves with the PCB board, in order to ensure a firm insertion, the locking groove 10101, the card groove 10102, the inner slide groove 10109, the outer slide groove 10110, the inner slide rail 10107, the outer slide rail 10104, the stopper 10105, the stop structure 10103, the sliding pressure plate 105 and other structures on the wiring plug can be set on the welding board plug, and the matching relationship between the above structure and the locking claw 204 is the same as the matching relationship between the wiring plug and the locking claw 204, so as to ensure that the welding board plug and the corresponding socket are locked. In order to prevent the welding board plug from shaking after being inserted into the corresponding socket, the two side walls of the welding board plug are provided with a limit reinforcement groove with the same structure as that in the wiring plug, and the corresponding socket is provided with a limit reinforcement rib.

As shown in FIG. 4a to FIG. 4b, the bent solder plate socket 21 includes a first socket insulator 201, a locking claw 204, and a first socket structure. The first socket structure includes a first socket structure 202 and a first socket structure 203. The first socket structure is a sheet structure, and is bent to form a U-shaped structure to reduce the length of the socket. The first socket structure R202 and the first socket structure L203 are symmetrically arranged in the first socket insulator 201. One side of the first socket structure is a plug-in end for contacting and matching with the contact in the plug. The plug-in ends of the first socket structure are arranged oppositely. The first socket structure 202 and the first socket structure 203 form a socket structure for plugging with the contact in the plug. The contact in the plug is plugged between the two socket structures. The other side of the first socket structure is a pin end for connecting with the PCB board. A plurality of first socket pins 208 perpendicular to the plugging direction are distributed on the pin end. The front end of the first socket insulator 201 is plugged with the plug, and the lower end is welded with the PCB board through the first socket pin 208 to form a flow. After the plug and the socket are plugged together, the first socket structure clamps the contact piece in the plug to transmit current.

Barb structures are provided on the upper and lower sides of the first plug hole structure 202 and the first plug hole structure 203 for vertically and strongly mounting in the first socket insulator 201 .

The locking claw 204 is inserted into the first socket insulator 201. The locking claw 204 includes two claws 20401 extending in the plugging direction. The two claws 20401 are distributed and symmetrically arranged in the left and right directions. The claw 20401 is a cantilever structure extending toward the plugging end. The end of the claw 20401 is provided with a claw protrusion 20402. The claw protrusions 20402 of the two claws 20401 are both facing outward. There is a space between the two claws 20401. When the plug and the socket are plugged in, the claw protrusion 20402 is inserted into the card slot 10102 on the plug. The locking protrusion 10501 is inserted between the two claws 20401 to prevent the claw 20401 from elastically deforming and falling out of the plug, thereby locking the plug and the socket. In order to ensure that the claw protrusion 20402 smoothly enters the card slot 10102, the cross-sectional shape of the claw protrusion 20402 is a trapezoid, with the narrow side facing outward, and the card slot 10102 matches the shape of the claw protrusion 20402. When the plug and socket are unlocked, the plug and the socket are separated, and the matching surface of the claw protrusion 20402 and the card slot 10102 in the separation direction is an inclined surface, which facilitates the claw protrusion 20402 to separate from the card slot 10102.

A mounting cantilever 20403 extending in the insertion direction is arranged between the two claws 20401 of the locking claw 204, and a mounting protrusion 20404 is arranged on the upper side of the end of the mounting cantilever 20403. A mounting hole 20101 is arranged on the top of the first socket insulator 201. When the locking claw 204 is inserted into the corresponding insertion hole on the first socket insulator 201, the mounting protrusion 20404 on the mounting cantilever 20403 is subjected to pressure, and the mounting cantilever 20403 undergoes elastic deformation. When the locking claw 204 is installed in place, the mounting protrusion 20404 is inserted into the mounting hole 20101, and the mounting cantilever 20403 returns to its original state, so that the locking claw 204 is firmly inserted into the first socket insulator 101.

In order to prevent the bent welding plate socket from shaking after being plugged into the corresponding plug, a limiting reinforcement rib extending along the plugging direction is provided on the inner cavity side wall of the bent welding plate socket, and a limiting reinforcement groove is provided on the corresponding plug. Its structure and matching relationship are the same as those of the wiring plug and the socket corresponding to the wiring plug, and will not be repeated here.

In other embodiments, the locking claw 204 can be integrally provided on the first socket insulator 201. As shown in FIG. 7, a symmetrical claw 20401 is integrally provided in the upper portion of the first socket insulator 201 and in the hole for plugging the plug. When processing the first socket insulator 201, the claw 20401 is integrally formed.

In other embodiments, a slot 10102 may be provided on the claw 20401 , and a claw protrusion 20402 may be provided on the side wall of the locking slot 10101 . When the claw 20401 is inserted, the claw 20401 undergoes elastic deformation, so that the claw protrusion 20402 is inserted into the slot 10102 .

As shown in Fig. 5a to Fig. 5b, the vertical welding board socket 22 includes a second socket insulator 205, a locking claw 204, and a second socket structure. The locking claw 204 in the vertical welding board socket 22 has the same structure and the same setting method as the locking claw 204 in the bent welding board socket, which will not be repeated here. The second socket structure is a sheet-type contact, which can reduce the volume of the socket. The second socket structure includes a symmetrically arranged second socket structure 206 and a second socket structure 207. The plug-in ends of the second socket structure 206 and the second socket structure 207 form a socket structure that is plugged into the contact on the plug, and the contact in the plug is vertically inserted between the two socket structures. The ends of the second socket structure 206 and the second socket structure 207 away from the plug-in end are provided with a second socket pin 209 extending in the plug-in direction, and the second socket pin 209 is connected to the vertical PCB board. The front end of the second socket insulator 108 is plugged into the plug, and the rear end is welded to the PCB board through the second socket pin 209 to form a flow.

Barb structures are provided on the upper and lower sides of the second socket structures 206 and 207, and the second socket structures are fixed in the cavity of the second socket insulator 108 by vertically forcing. In this embodiment, each second socket structure has two spring claws 210 distributed on the upper and lower sides. In order to reduce the shaking amount of the second socket structure, the cavity of the plug-in entrance end of the second socket insulator 108 away from the plug-in end is designed to be a "日" shape, with a larger width on the upper and lower sides to facilitate the plug-in of the spring claws 210, and a narrower width in the middle to facilitate the limiting of the second socket structure. When the second socket structure 206 and the second socket structure 207 are assembled, the upper and lower spring claws 210 enter from the wider upper and lower "mouths" of the "日" shape. After being assembled in place, the middle narrowed position of the cavity at the insertion entrance end of the second socket insulator 205 matches with the narrowest position of the second socket structure, and the upper and lower parts of the second socket structure are matched and limited with the upper and lower parts of the cavity at the insertion entrance end of the second socket insulator 108 through the barb structure, and the middle part of the second socket structure is matched and limited by the middle part of the cavity of the insertion entrance section of the second socket insulator 108, thereby preventing the second socket structure from shaking in the second socket insulator 108.

In order to prevent the vertical welding plate socket from shaking after being plugged into the corresponding plug, a limiting reinforcement rib extending along the plugging direction is provided on the inner cavity side wall of the vertical welding plate socket, and a limiting reinforcement groove is provided on the corresponding plug. Its structure and matching relationship are the same as those of the wiring plug and the socket corresponding to the wiring plug, and will not be repeated here.

The application scenarios of the above four connectors are shown in Figures 6a to 6c, including two application scenarios: wire-to-board and board-to-board. The maximum current of these four small-volume connectors can reach 40A in this scenario. In the wire-to-board application scenario, the cables 5 are all connected to the wiring plugs 11, and the sockets that match the wiring plugs 11 include two options: a bent welding board socket 21 and a vertical welding board socket 22. The bent welding board socket 21 is plugged into the horizontal PCB board 3, and the vertical welding board socket 22 is plugged into the vertical PCB board 4, which is convenient for adapting to a variety of space scenarios when selecting the socket. The pins of the socket are welded to the PCB board, thereby realizing wire-to-board current transmission.

In the board-to-board application scenario, the pin of the welding board plug 12 is connected to the horizontal PCB board 3, and the other end is plugged into the bent welding board socket 21. The pin of the bent welding board socket 21 is connected to another horizontal PCB board 3, thereby realizing the transmission of current between boards. The bent welding board socket 21 can be plugged into the welding board plug 12 or the wiring plug 11, which can realize convenient switching between the wire-to-board and board-to-board application scenarios.

The small-volume, high-current electric connector and the matching socket thereof of the present invention are small in volume, large in current flow, and high in space utilization, which are beneficial to the miniaturization development of servers.

The small-volume, high-current electrical connector and its matching socket of the present invention adopt a pull-ring locking structure when the plug and socket are matched, which ensures the reliability of the wire-to-board usage scenario and facilitates unlocking in a narrow space.

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

Claims (14)

1. The utility model provides a small-size heavy current electric connector, includes insulator, the contact piece of cartridge in the insulator, its characterized in that: the side wall of the insulator matched with the adapting connector is provided with a limit reinforcing groove (113) extending along the opposite inserting direction.

2. The low-volume high-current electrical connector of claim 1, wherein: the insulator is provided with a locking groove (10101) extending along the plugging direction of the connector, the locking groove (10101) is used for being matched and locked with a locking claw (204) on the adapter connector, the insulator is also provided with a sliding pressing plate (105) sliding in the plugging direction, and when the locking claw on the adapter connector is matched with the locking groove, the sliding pressing plate can slide to a locking position for preventing the locking claw on the adapter connector from being separated from the locking groove.

3. The low-volume high-current electrical connector of claim 2, wherein: the side wall of the locking groove is provided with a clamping groove (10102) for clamping and matching.

4. The low-volume high-current electrical connector of claim 2, wherein: the insulator is provided with an elastic member which enables the sliding pressing plate (105) to have a moving trend towards the plug-in end.

5. The low volume high current electrical connector of claim 4, wherein: the insulator is kept away from tip setting backstop structure (10103) of grafting end, one side that backstop structure (10103) towards the grafting end is equipped with backstop (10106) that extend in the grafting direction, one side that grafting end was kept away from to sliding pressure plate (105) sets up channel (10502), channel (10502) and backstop (10106) can relative movement, set up one end in channel (10502) and support on backstop (10106) terminal surface, the other end supports spring (106) on the lateral wall that channel (10502) are close to the grafting end.

6. The low-volume high-current electrical connector of claim 2, wherein: the insulator outer surface is equipped with along interior sliding tray (10109) of grafting direction extension and with locking groove (10101) intercommunication, be located interior sliding tray both sides and along outer spout (10110) of grafting direction extension, interior sliding tray (10109) lateral wall sets up interior sliding tray (10107) of following the grafting direction extension, outer sliding tray (10110) lateral wall sets up outer slide rail (10104) of following the grafting direction extension, slide clamp plate (105) slip setting is in interior sliding tray (10109), outer sliding tray (10110) to with outer slide rail (10104), interior sliding tray (10107) sliding fit, set up on interior sliding tray, the outer slide rail and restrict baffle (10105) of slide clamp plate movable range, slide clamp plate and outer sliding tray cooperation for the both sides face of slide clamp plate does not bulge insulator.

7. The low-volume high-current electrical connector of claim 2, wherein: the end part of the sliding pressing plate (105) far away from the plugging end is connected with a pull belt (107).

8. The low-volume high-current electrical connector of claim 2, wherein: the insulator is internally provided with a cavity extending along the plugging direction, a mounting groove (10108) for plugging a contact is arranged in the cavity, and the contact is a sheet type contact; the sheet type contact is provided with a limit groove with the extending direction perpendicular to the inserting direction, after the sheet type contact is inserted into the mounting groove (10108), the plug block (104) is inserted into the limit groove, and the plug block (104) is simultaneously inserted and assembled with the insulator.

9. The low-volume high-current electrical connector of claim 8, wherein: the part of the sheet type contact piece, which is far away from the plug-in end, is bent, and the bent part is provided with pins which extend out of the insulator and are connected with the PCB.

10. The utility model provides a little volume heavy current electric connector's adaptation connector, includes insulator, the contact piece of cartridge in the insulator, its characterized in that: the inner wall of the insulator is provided with a limit reinforcing rib (211) extending along the opposite inserting direction.

11. The mating connector of the low-volume high-current electrical connector of claim 10, wherein: the insulator is provided with a locking claw (204), the locking claw (204) comprises a claw (20401) extending in the inserting direction, one side of the claw (20401) is provided with a claw lug (20402) for clamping fit, and a space is reserved on the other side of the claw.

12. The mating connector of the low-volume high-current electrical connector of claim 10, wherein: the contact piece is of a bending structure, one side of the contact piece is a spring claw which is in contact with the adapting contact piece, and the other side of the contact piece is provided with a first socket pin (208) which penetrates out of the insulator and is not parallel to the plugging direction, and the first socket pin is connected with the PCB.

13. The mating connector of the low-volume high-current electrical connector of claim 10, wherein: the plug-in end of the contact element is a spring claw contacted with the adapting contact element, one side of the contact element away from the plug-in end is provided with a second socket pin (209) extending in the opposite direction to the plug-in direction, and the second socket pin is connected with the PCB.

14. The mating connector of the low-volume high-current electrical connector of claim 13, wherein: the contact piece is forcedly arranged in the cavity of the insulator through the barb, and the width of the cavity of the insulator at the inserting port end is matched with the thickness of the inserting hole structure.