Small volume high current electrical connector and mating connector therefor

Abstract

A small-volume, high-current electrical connector and its adapter connector include an insulator and contacts inserted into the insulator. The insulator has a locking groove extending along the connector's insertion direction, which engages with locking claws on the adapter connector for locking. The insulator also has a sliding pressure plate that slides along the insertion direction. When the locking claws on the adapter connector engage with the locking groove, the sliding pressure plate slides to a locking position that prevents the locking claws from disengaging from the locking groove. The sidewall of the insulator has a limiting reinforcement groove extending along the mating direction, which slides onto a limiting reinforcement rib within the cavity of the adapter connector. This small-volume, high-current electrical connector and its adapter connector are small in size and have high space utilization, which is beneficial for the miniaturization of servers. When the plug and socket are mated, unlocking is convenient in confined spaces. After mating, it prevents shaking.

Description

Technical Field

[0001] This utility model belongs to the field of connector technology, specifically relating to small-volume high-current electrical connectors and their adapter connectors. Background Technology

[0002] Currently, server board connectors are generally large in size to ensure current carrying capacity.

[0003] Similar electrical connector products generally use unlocking structures that require close-range operation, such as side-press locking and locking buckles.

[0004] The inter-board connector with the above structure has the following disadvantages:

[0005] The connector is too large under high current conditions, which is not conducive to the miniaturization and integration of servers;

[0006] When plugs and sockets are used together, locking structures such as side-press locking and locking latches are not conducive to unlocking in confined spaces.

[0007] When a plug and socket are inserted together, they are prone to lateral wobbling, which can easily damage the plug and socket. Utility Model Content

[0008] To solve the above-mentioned technical problems, this utility model provides a small-volume, high-current electrical connector and its adapter connector.

[0009] The objective of this utility model is achieved through the following technical solution. According to the small-volume, high-current electrical connector proposed in this utility model, the side wall of the insulator that matches the adapter connector is provided with a limiting and reinforcing groove extending along the mating direction.

[0010] Furthermore, it includes an insulator and a contact inserted into the insulator. The insulator has a locking groove extending along the connector insertion direction. The locking groove is used to engage with the locking claw on the adapter connector for locking. The insulator also has a sliding pressure plate that slides in the insertion direction. When the locking claw on the adapter connector engages with the locking groove, the sliding pressure plate can slide to a locking position that prevents the locking claw on the adapter connector from dislodging from the locking groove.

[0011] Furthermore, the locking groove sidewall is provided with a locking groove for snap-fit ​​engagement.

[0012] Furthermore, the insulator is provided with an elastic element that causes the sliding pressure plate to tend to move toward the insertion end.

[0013] Furthermore, a stop structure is provided at the end of the insulator away from the plug end. The stop structure has a stop extending in the plugging direction on the side facing the plug end. A channel is provided on the side of the sliding pressure plate away from the plug end. The channel and the stop can move relative to each other. A spring is provided in the channel, with one end abutting against the end face of the stop and the other end abutting against the side wall of the channel near the plug end.

[0014] Furthermore, the outer surface of the insulator is provided with an inner sliding groove extending along the insertion direction and communicating with the locking groove, and an outer sliding groove located on both sides of the inner sliding groove and extending along the insertion direction. The side wall of the inner sliding groove is provided with an inner sliding rail extending along the insertion direction, and the side wall of the outer sliding groove is provided with an outer sliding rail extending along the insertion direction. The sliding pressure plate is slidably disposed in the inner and outer sliding grooves and slidably cooperates with the outer and inner sliding rails. The inner and outer sliding rails are provided with baffles that limit the movement range of the sliding pressure plate. The sliding pressure plate cooperates with the outer sliding groove so that the two sides of the sliding pressure plate do not protrude from the two sides of the insulator.

[0015] Furthermore, a pull strap is connected to the end of the sliding pressure plate away from the insertion end.

[0016] Furthermore, the insulator has a cavity extending along the insertion direction, and a mounting groove for inserting a contact is provided in the cavity. The contact is a plate contact. A limiting groove is provided on the plate contact, the extension direction of which is perpendicular to the insertion direction. After the plate contact is inserted into the mounting groove, a plug is inserted into the limiting groove, and the plug simultaneously engages with the insulator.

[0017] Furthermore, the portion of the plate contact away from the plug end is bent, and the bent portion is provided with pins that extend out of the insulator and connect to the PCB board.

[0018] A small-volume, high-current electrical connector adapter, wherein the inner wall of the insulator is provided with limiting reinforcing ribs extending along the mating direction.

[0019] Furthermore, it includes an insulator, a contact inserted into the insulator, a locking claw inserted into the insulator, the locking claw including a claw extending in the insertion direction, a claw protrusion on one side for locking engagement, and a space left on the other side.

[0020] Furthermore, the contact element has a bent structure, with one side being a spring claw that contacts the adapter contact element, and the other side having a first socket pin that extends out from the insulator and is not parallel to the insertion direction. The first socket pin is connected to the PCB board.

[0021] Furthermore, the insertion end of the contact element is a spring claw that contacts the contact element, and the side of the socket structure away from the insertion end is provided with a second socket pin extending in the opposite direction to the insertion direction, and the second socket pin is connected to the PCB board.

[0022] Furthermore, the contact is forcibly mounted within the cavity of the insulator by barbs, and the width of the cavity at the insertion inlet end of the insulator matches the thickness of the insertion hole structure.

[0023] Compared with the prior art, the advantages of this utility model are:

[0024] After the connector and the adapter connector are mated, the tight fit between the limiting reinforcing rib and the limiting reinforcing groove prevents the connector and the adapter connector from lateral shaking and prevents damage to the connector.

[0025] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0026] Figure 1a This is a schematic diagram of an embodiment of the connector of this utility model;

[0027] Figure 1b This is a schematic diagram of an embodiment of the soldering plate connector of this utility model;

[0028] Figure 1c This is a schematic diagram of an embodiment of the bent welding plate socket of this utility model;

[0029] Figure 1d This is a schematic diagram of an embodiment of the vertical soldering plate socket of this utility model;

[0030] Figure 2a This is an exploded view of an embodiment of the connector of this utility model;

[0031] Figure 2b-1 for Figure 2a A schematic diagram showing the insertion of the plug insulator and the locking claw at the socket end;

[0032] Figure 2b-2 for Figure 2a A schematic diagram showing the plug insulator, sliding pressure plate, pull strap, and locking claw at the socket end after they are engaged.

[0033] Figure 2c-1 for Figure 2a A schematic diagram of the assembly of the plug insulator and the sliding pressure plate;

[0034] Figure 2c-2 for Figure 2c-1 Side view;

[0035] Figure 2c-3 for Figure 2c-2 Sectional view at point A in the middle;

[0036] Figure 2d-1 for Figure 2a A top view of the plug insulator in the picture;

[0037] Figure 2d-2 for Figure 2a A bottom view of the sliding pressure plate in the middle;

[0038] Figure 2d-3 This is a half-sectional view of an embodiment of the connector of this utility model in its initial state;

[0039] Figure 2d-4 This is a half-sectional view of an embodiment of the connector of this utility model in the unlocked state;

[0040] Figure 2e-1 This is an overall schematic diagram of an embodiment of the wiring plug of this utility model;

[0041] Figure 2e-2 for Figure 2e-1 Enlarged view of point B in the middle;

[0042] Figure 3 This is an exploded view of an embodiment of the soldering plate connector of this utility model;

[0043] Figure 4a This is an exploded view of an embodiment of the bent welding plate socket of this utility model;

[0044] Figure 4b for Figure 4a A schematic diagram showing the mating of the socket structure and the contact parts at the plug end;

[0045] Figure 5a This is an exploded view of an embodiment of the vertical soldering plate socket of this utility model;

[0046] Figure 5b This is a rear view of an embodiment of the vertical soldering plate socket of this utility model;

[0047] Figure 6a This is a schematic diagram showing the insertion of the wiring plug and the bent solder plate socket in this utility model;

[0048] Figure 6b This is a schematic diagram showing the insertion of the wiring plug and the vertical soldering plate socket in this utility model;

[0049] Figure 6c This is a schematic diagram showing the mating of the soldering plate plug and the bent soldering plate socket in this utility model.

[0050] Figure 7 This is a schematic diagram of the insulator in an embodiment of the bent welding plate socket of this utility model.

[0051] [Attached image labels]

[0052] 11-Connecting plug, 12-Soldering plate plug, 101-First plug insulator, 10101-Locking groove, 10102-Card slot, 10103-Stop structure, 10104-Outer slide rail, 10105-Stop, 10106-Stop, 10107-Inner slide rail, 10108-Mounting groove, 10109-Inner slide groove, 10110-Outer slide groove, 10111-Stop end face, 102-First contact, 10201-Limiting groove I, 103-First contact, 10301-Limiting groove II, 104-Plug, 105-Sliding pressure plate, 10501-Locking protrusion, 10502-Channel, 106-Spring, 107-Pull strap, 108-Second plug insulator, 109-Second contact, 1 10-Second contact, 111-Plug pin, 112-Firming plate, 113-Limiting reinforcing groove, 114-Locking end, 21-Bent soldering plate socket, 22-Vertical soldering plate 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-Spring claw, 211-Limiting reinforcing rib, 3-Horizontal PCB board, 4-Vertical PCB board, 5-Cable. Detailed Implementation

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] like Figures 1a to 1d As shown, the small-volume, high-current electrical connector of this utility model includes two embodiments: a wiring plug 11 and a solder plate plug 12 at the plug end. The socket adapted to the small-volume, high-current electrical connector also includes two embodiments: a bent solder plate socket 21 and a vertical solder plate socket 22 at the socket end. The embodiments of the wiring plug 11, solder plate plug 12, bent solder plate socket 21, and vertical solder plate socket 22 will be described below. In other embodiments, the structures of the plug end and the socket end can be interchanged as needed, which will not be elaborated here.

[0055] The structure of the connector 11 is as follows Figures 2a to 2d-4As shown in the figure, taking the orientation shown as an example, the device includes a first plug insulator 101, a sliding pressure plate 105, a plug contact, a plug block 104, a spring 106, and a pull strap 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 inside the first plug insulator 101, allowing the plug contact inside the first plug insulator 101 to mate with the socket's internal 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 connects to the plug contact after being inserted.

[0056] The upper part of the first plug insulator 101 has a locking part extending in the mating direction. The locking part cooperates with the sliding pressure plate 105 to achieve mating and locking with the locking claw 204 on the socket. Figure 2b-2 As shown. The locking part has a locking groove 10101 extending in the mating direction. The locking groove 10101 is located at the plug end of the first plug insulator 101 and extends through to the plug end face of the first plug insulator 101. The two side walls of the locking groove 10101 are provided with slots 10102. When it is mated with the socket, the locking claw 204 at the socket end engages with the slot 10102.

[0057] The upper part of the first plug insulator 101 is also provided with an inner sliding groove 10109 that communicates with the locking groove 10101 and extends along the insertion direction. The two side walls of the inner sliding groove 10109 are provided with inner slide rails 10107 extending in the insertion direction. The end of the inner sliding groove 10109 away from the insertion end is provided with a stop structure 10103. The inner sliding groove 10109 on the upper part of the first plug insulator 101 is provided with outer sliding grooves 10110 on both sides. The side walls of the outer sliding grooves 10110 are provided with outer slide rails 10104 extending in the insertion direction. The sliding pressure plate 105 is simultaneously slidably disposed within the inner slide groove 10109 and the outer slide groove 10110, and slidably engages with the inner slide rail 10107 and the outer slide rail 10104. The sliding engagement structure can be a slot-block structure, that is, the block on the sliding pressure plate 105 slides in the slots on the inner slide rail 10107 and the outer slide rail 10104, or the slot on the sliding pressure plate 105 wraps around and slides on the block on the inner slide rail 10107 and the outer slide rail 10104. A stop 10105 is provided at both ends of the outer slide rail 10104 and the inner slide rail 10107 to limit the movement range of the sliding pressure plate 105. The cooperation between the aforementioned insulator and the sliding pressure plate 105 ensures the stability of the function of the sliding pressure plate 105 while miniaturizing the connector. It prevents the locking function from becoming unstable due to the smaller size of the connector, which would cause the locking function-related structures (including the inner slide groove 10109, outer slide groove 10110, inner slide rail 10107, outer slide rail 10104, locking groove 10101, and card slot 10102) to become smaller. At the same time, the inner slide rail 10107 and outer slide rail 10104 ensure that the sliding pressure plate 105 does not separate from the plug insulator during assembly, thus achieving basic fixation.

[0058] The outer sliding groove 10110 is disposed on both sides of the first plug insulator 101. The lower part of the sliding pressure plate 105 matches the outer sliding groove 10110 and slides in cooperation with the outer sliding rail 10104. In this embodiment, the two sides of the sliding pressure plate 105 are aligned with the two sides of the first plug insulator 101. This structure can greatly reduce the dimension of the sliding pressure plate 105 in the width direction. At this time, the width of the sliding pressure plate 105 is consistent with the width of the first plug insulator 101, which reduces the size of the connector and is beneficial to the space utilization of the server where the connector is located.

[0059] The stop structure 10103 includes two parallel stops 10106, which extend along the mating direction and face the mating end. In other embodiments, one or more stops 10106 may be provided. The lower part of the sliding pressure plate 105, which matches the inner sliding groove 10109, is provided with a channel 10502 and a cavity that matches the stop structure 10103 to accommodate the stop structure 10103. The channel 10502 extends in the mating direction and passes through the sliding pressure plate 105 at the end away from the mating end. The stop 10106 is movably mounted inside the channel 10502. A spring 106 is provided inside the channel 10107, with one end of the spring 106 abutting against the side wall of the channel 10107 near the mating end and the other end abutting against the end face of the stop 10106.

[0060] Due to the miniaturization of the connector, the spring 106 is small in size and diameter. When compressed, the spring 106 may deform due to manufacturing errors of the spring itself and structural errors of the connector, even under relatively small forces. Therefore, when the spring 106 is subjected to compressive force, even if the direction of the compressive force is aligned with the axis of the spring 106 as much as possible, the spring 106 may still be subjected to external forces that are not aligned with its axis, causing the spring 106 to bend. When the bending reaches a certain extent, the spring 106 may undergo plastic deformation or become stuck inside the connector, thus preventing the spring 106 from moving the sliding pressure plate 105 towards the insertion end and thus preventing the sliding pressure plate 105 from performing its locking function. Therefore, in this embodiment, the spring 106 is confined within the channel 10502 to prevent bending of the spring 106 under other external forces. This ensures that when the spring 106 is subjected to compressive force, it will only be compressed in the extension direction of the channel 10502, preventing the spring 106 from bending and causing the spring 105 to fail. Simultaneously, the channel 10502 and the stop 10106 are movably engaged. The stop 10106 is movably inserted into the channel 10502, allowing it to move along the extension direction of the channel 10502. This allows a compressive force to be applied to the spring 106 along the extension direction of the channel 10502 when the sliding pressure plate 105 is moved, thus restricting the direction of force on the spring 106 and preventing it from being affected by external forces. In other embodiments, the spring 106 may also be other elastic elements, such as elastic washers superimposed in the extension direction.

[0061] In other embodiments, a channel 10502 with an opening facing the insertion end and extending in the insertion direction can be provided on the stop structure 10103. The channel 10502 can be configured as a blind hole, and a spring 106 is inserted into the blind hole. A stop 10106 extending in the direction away from the insertion end is provided on the sliding pressure plate 105. The stop 10106 is slidably inserted into the blind hole. One end of the spring 106 abuts against the bottom surface of the blind hole, and the other end abuts against the end face of the stop 10106. The above-mentioned technical effect of limiting the spring 106 can be achieved in the same way.

[0062] In another embodiment, a stop 10106 extending towards the insertion end is provided on the stop structure 10103, and a spring 106 is sleeved on the stop. A channel 10502 is provided on the sliding pressure plate 105, and the stop 10106 moves through the channel 10502. One end of the spring 106 abuts against the stop end face 10111 of the stop structure 10103 near the insertion end, and the other end abuts against the end face of the sliding pressure plate 105 away from the insertion end. The stop 10106 limits the movement of the spring 106.

[0063] In another embodiment, a stop 10106 extending toward the insertion end is provided on the stop structure 10103. The stop 10106 is slidably disposed in the channel 10502 on the sliding pressure plate 105. One end of the spring 106 can be sleeved and fixed on the stop 10106, and the other end abuts against the side wall of the channel 10502 near the insertion end. The spring 106 is disposed entirely in the channel 10502, thereby limiting the movement of the spring 106.

[0064] In another embodiment, when the overall structure of the connector is large, the spring 106 is large in volume and not easily deformed. The stop 10106 on the stop structure 10103 and the groove 10502 on the sliding pressure plate 105 can be eliminated. The sliding pressure plate 105 is slidably disposed on the first plug insulator 101. The spring 106 is disposed between the stop structure 10103 and the sliding pressure plate 105. One end of the spring 106 abuts against the end face of the sliding pressure plate 105 away from the plug end, and the other end abuts against the end face of the stop structure 10103 near the plug end.

[0065] A locking protrusion 10501 is provided at the end of the sliding pressure plate 105 near the plug-in end. When the locking claw 204 is engaged in the slot 10102, the sliding pressure plate 105 slides towards the plug-in end under the elastic force of the spring 106. 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 claws 20401 from moving out of the slot 10102, thereby locking the plug and socket and ensuring the reliability of the connection in the wire-to-board scenario.

[0066] A pull strap 107 is provided at the end of the sliding pressure plate 105 away from the plug-in end. One end of the pull strap 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 socket, pulling the pull strap 107 will cause the sliding pressure plate 105 to move in the opposite direction of the plugging direction, overcoming the elastic force of the spring 106. At this time, the stop 10106 cooperates with the channel 10107 to limit the spring 106. The locking protrusion 10501 disengages from the locking claw 204, and the locking claw 204 is freed from the restriction of the locking protrusion 10501, allowing the plug end to be pulled out. Before plugging and unplugging the socket, first pull the strap 107 in the opposite direction of the plugging direction to provide space for the locking claw 204 to insert into the locking groove 10101. Then, insert the locking claw 204 into the locking groove 10101, and the latch 20401 engages in the latch slot 10102. Then, release the strap 107, and the sliding pressure plate 105 returns to its original position due to the release of the potential energy of the spring 106. The locking protrusion 10501 engages between the locking claws 204, thus achieving locking. The strap 107 can be used to lock and unlock in small spaces.

[0067] The slide rails on the inner and outer sides of the first plug insulator 101, the stop structure 10103, the sliding pressure plate 105 and its channel 10502, and the spring 106 cooperate to prevent the sliding pressure plate 105 from coming off. At the same time, it avoids the situation where the stop, pull rod, insulator and locking structure are used separately in the current type of electrical connector. No additional pull rod is needed, which not only reduces the number of parts, but also makes the size of the connector smaller.

[0068] The first contact element installed in the first plug insulator 101 is a plate contact element, including a first contact element 102 and a first contact element 103, which are symmetrically arranged on the left and right sides. The first contact elements 102 and 103 are vertically inserted into the mounting grooves 10108 in the internal cavity of the first plug insulator 101 along the insertion direction. Limiting grooves I 10201 and II 10301 are respectively formed on the first contact elements 102 and 103, and the extension direction of the limiting grooves is perpendicular to the insertion direction. The internal cavity of the first plug insulator 101 is provided with a rib plate 112 that separates the two contacts. The rib plate 112 extends out of the cavity of the first plug insulator 101 and forms a guide structure at its end when the plug and socket are inserted. The mounting groove 10108 extends out of the cavity of the first plug insulator 101 along with the rib plate 112. After inserting the two first contacts into the corresponding mounting slots 10108, the plugs 104 are sequentially inserted into the limiting slot I 10201, the hole on the stiffener 112, and the limiting slot II 10301 to limit the front and rear positions. When the connector is plugged into the socket, the first contact is inserted into the socket's socket structure. The tail of the first contact is soldered with a wire to electrically connect to the cable 5, enabling current transmission.

[0069] After the plug is inserted into the corresponding socket, the first contact 102 and the first contact 103 engage with the corresponding contact in the socket, and the two are elastically connected. The contacts in the plug form a pin structure, and the contacts in the socket form a socket structure. To ensure that the plug and socket are firmly engaged under vibration, the socket structure is usually composed of spring claws located on both sides inside the socket. After engaging with the contacts of the plug, these spring claws elastically clamp the contacts of the plug. The upper part of the plug near the engagement end is the locking end 114. After the plug and socket are inserted, the locking end 114 is located in the cavity of the socket, and the locking claws in the socket cooperate with the locking groove 10101 at the top of the locking end 114 to achieve locking. The locking claws and the locking groove 10101 cooperate to prevent the socket from disengaging from the socket. Therefore, it can be seen that after the plug is inserted into the corresponding socket, the first contact 102 and the first contact 103 are elastically connected to the socket. The locking end 114 of the plug is inserted into the cavity of the socket to lock the insertion direction. However, the locking end 114 is prone to shaking in the cavity of the socket, which in turn causes the plug to shake in the socket. During the shaking, the plug and the socket are easily damaged laterally (in a direction perpendicular to the insertion direction). Therefore, this application provides limiting reinforcing grooves 113 extending along the insertion direction on both sides of the locking end 114. The opening of the limiting reinforcing groove 113 is located on the end face of the locking end. Figure 2e-1 , 2e-2 As shown, correspondingly, limiting reinforcing ribs 211 extending along the insertion direction are provided on both sides of the cavity of the socket. The limiting reinforcing ribs 211 protrude from the inner side wall of the socket, as shown. Figure 7As shown. During the insertion of the connector into the corresponding socket, the limiting reinforcing groove 113 slides and nests on the limiting reinforcing rib 211. After insertion, the limiting reinforcing groove 113 and the limiting reinforcing rib 211 limit each other in the lateral direction. At the same time, in conjunction with the locking groove and locking claw, the connector and socket are fully limited to prevent the connector and the corresponding socket from shaking. To prevent wobbling, the limiting reinforcing groove 113 and the limiting reinforcing rib 211 need to fit tightly. To allow the limiting reinforcing rib 211 to slide into the limiting reinforcing groove 113, they are in a clearance fit. However, to prevent wobbling, the clearance needs to be very small. Therefore, to facilitate insertion, a chamfer is provided at the opening of the limiting reinforcing groove 113. In the insertion direction, the opening of the limiting reinforcing groove 113 gradually increases, and the insertion end of the limiting reinforcing rib 211 is also chamfered, with the outer diameter of the insertion end of the limiting reinforcing rib 211 gradually decreasing in the insertion direction. This facilitates insertion, and after insertion, the limiting reinforcing rib 211 and the limiting reinforcing groove 113 fit tightly, achieving the function of preventing wobbling. A notch 11301 is provided at the bottom of the opening of the limiting reinforcing groove 113. When inserting the plug into the socket, first, the upper sidewall of the opening of the limiting reinforcing groove 113 overlaps the corresponding limiting reinforcing rib 211, and then the plug is inserted, making the insertion operation smoother and more gentle. Without the notch 11301, when the plug and socket are inserted at an angle, the limiting reinforcing groove 113 and the limiting reinforcing rib 211 in the socket will interfere, affecting the smoothness of insertion. In severe cases, excessive force may damage the plug and socket.

[0070] The structure of the soldering board connector is as follows Figure 3As shown, the device includes a second plug insulator 108, a second contact, and a plug 104. The second contact is a plate-type contact, including second contact 109 and second contact 110. The portion of the second contact away from the insertion end is bent into a U-shape to reduce the plug volume. The bent portion is provided with plug pins 111 extending perpendicular to the insertion direction. After the second contact is installed, the plug pins 111 extend from the lower part of the second plug insulator 108. The installation method of the second contact in the second plug insulator 108 is the same as that of the first contact. The second contact is vertically inserted into the mounting groove in the cavity of the second plug insulator 108, and the second contact is separated by a rib 112. The rib 112, the mounting groove, and the second contact extend out of the cavity of the second plug insulator 108 to facilitate insertion into the socket. The plug 104 restricts movement in the insertion direction, ensuring product reliability. The portion of the second contact away from the plug end is bent into a U-shape, with a gap between the two sides of the U-shape to provide sufficient space for the installation of the plug 104. The front end of the second plug insulator 108 is inserted into the socket, and the lower end is soldered to the PCB board through the plug pin 111 of the second contact to form a current-carrying structure. The upper part of the second plug insulator 108 is provided with a structure for engaging with the locking claw 204. The structure of the second plug insulator 108 engaging with the locking claw 204 is similar to the structure of the first plug insulator 101 engaging with the locking claw 204. Since the solder joint is soldered to the PCB board, a locking structure is not required to ensure that the plug and socket do 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 slot 10102 for the locking claw 204 to be inserted. In other embodiments, if the soldering board plug moves with the PCB board, to ensure a secure connection, structures such as locking groove 10101, slot 10102, inner slide groove 10109, outer slide groove 10110, inner slide rail 10107, outer slide rail 10104, stop 10105, stop structure 10103, and sliding pressure plate 105 can be provided on the soldering board plug. The cooperation relationship between the above structures and locking claw 204 is the same as the cooperation relationship between the soldering board plug and locking claw 204, ensuring that the soldering board plug is locked in place with the corresponding socket. To prevent the soldering board plug from shaking after being inserted into the corresponding socket, limiting reinforcing grooves with the same structure as those in the soldering board plug are provided on both side walls of the soldering board plug, and limiting reinforcing ribs are provided in the corresponding sockets.

[0071] Bent soldering plate socket 21 Figures 4a to 4bAs shown, the socket 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-like structure, bent into a U-shape to reduce the length of the socket. The first socket structures R202 and 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 mating with the contacts in the plug. The plug-in ends of the first socket structures are arranged opposite each other, and the first socket structures 202 and 203 form a socket structure for interlocking with the contacts in the plug. The contacts in the plug are inserted between the two socket structures. The other side of the first socket structure is a pin end for connecting to the PCB board. Multiple first socket pins 208 perpendicular to the insertion direction are distributed on the pin end. The front end of the first socket insulator 201 is interlocked with the plug, and the lower end is soldered to the PCB board through the first socket pins 208 to form a current-carrying structure. After the plug and socket are inserted, the first socket structure clamps the contact in the plug to transmit current.

[0072] The first socket structure 202 and the first socket structure 203 are provided with barbed structures on the upper and lower sides for vertically forcibly installed in the first socket insulator 201.

[0073] The locking claw 204 is inserted into the first socket insulator 201. The locking claw 204 includes two claws 20401 extending in the insertion direction. The two claws 20401 are distributed and symmetrically arranged in the left-right direction. The claws 20401 are cantilever structures extending towards the insertion end. The ends of the claws 20401 are provided with claw protrusions 20402, and the claw protrusions 20402 of both claws 20401 face outward. There is a space between the two claws 20401. When the plug and socket are inserted, the claw protrusions 20402 engage with the slots 10102 on the plug, and the locking protrusion 10501 is inserted between the two claws 20401 to prevent the claws 20401 from elastically deforming and dislodging from the plug, thereby locking the plug and socket. To ensure that the claw protrusion 20402 smoothly enters the slot 10102, the cross-sectional shape of the claw protrusion 20402 is trapezoidal, with the narrow side facing outwards. The slot 10102 matches the shape of the claw protrusion 20402. When the plug and socket are unlocked, the plug and socket are separated. The surface of the claw protrusion 20402 that matches the slot 10102 in the separation direction is inclined, which facilitates the claw protrusion 20402 disengaging from the slot 10102.

[0074] A mounting cantilever 20403 extending in the insertion direction is provided between the two claws 20401 of the locking claw 204. A mounting protrusion 20404 is provided on the upward-facing side of the end of the mounting cantilever 20403. A mounting hole 20101 is provided 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. After the locking claw 204 is installed in place, the mounting protrusion 20404 is engaged in the mounting hole 20101, and the mounting cantilever 20403 returns to its original shape, thereby firmly inserting the locking claw 204 into the first socket insulator 101.

[0075] To prevent the bent soldering plate socket from shaking after it is plugged into the corresponding plug, a limiting reinforcing rib extending along the plugging direction is provided on the inner cavity side wall of the bent soldering plate socket, and a limiting reinforcing groove is provided on the corresponding plug. The structure and mating relationship are the same as those of the wiring plug and the socket corresponding to the wiring plug, and will not be described in detail here.

[0076] In other embodiments, the locking claw 204 can be integrally disposed on the first socket insulator 201, such as... Figure 7 As shown, symmetrical claws 20401 are integrally provided in the hole where the plug is inserted into the upper part of the first socket insulator 201. The claws 20401 are integrally formed during the processing of the first socket insulator 201.

[0077] 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 engaged, the claw 20401 undergoes elastic deformation, causing the claw protrusion 20402 to be inserted into the slot 10102.

[0078] Vertical soldering plate socket 22 Figures 5a to 5b As shown, the socket includes a second socket insulator 205, a locking claw 204, and a second socket structure. The locking claw 204 in the vertical soldering plate socket 22 has the same structure and arrangement as the locking claw 204 in the bent soldering plate socket, and will not be described again here. The second socket structure is a plate contact, which can reduce the size of the socket. The second socket structure includes symmetrically arranged second socket structures 206 and 207. The plug-in ends of the second socket structures 206 and 207 form socket structures that mate with the contacts on the plug. The contacts in the plug are vertically inserted between the two socket structures. The ends of the second socket structures 206 and 207 away from the plug-in ends are provided with second socket pins 209 extending in the plugging direction. The second socket pins 209 are connected to the vertical PCB board. The front end of the second socket insulator 108 mates with the plug, and the rear end is soldered to the PCB board through the second socket pins 209 to form a current-carrying structure.

[0079] Barbs are provided on the upper and lower sides of the second jack structures 206 and 207, and the second jack structures are fixed in the cavity of the second socket insulator 108 by vertical forced installation. In this embodiment, two spring claws 210 are distributed vertically on each second jack structure. To reduce the wobbling amount of the second jack structure, the cavity at the insertion entrance end of the second socket insulator 108 far from the insertion end is designed as a "day" shape, with larger widths on the upper and lower sides for facilitating the insertion of the spring claws 210 and a narrower width in the middle for limiting the second jack structure. When assembling the second jack structures 206 and 207, the upper and lower spring claws 210 enter from the wider upper and lower "mouths" of the "day" shape. After being assembled in place, the middle narrowing position of the cavity at the insertion entrance end of the second socket insulator 205 cooperates with the narrowest position of the second jack structure. The upper and lower parts of the second jack structure are matched and limited by the upper and lower parts of the cavity at the insertion entrance end of the second socket insulator 108 through the barbs, and the middle part of the second jack structure is matched and limited by the middle part of the cavity at the insertion entrance section of the second socket insulator 108, thereby preventing the second jack structure from wobbling in the second socket insulator 108.

[0080] To prevent the vertical soldering board socket from wobbling after being inserted with the corresponding plug, a limiting reinforcing rib extending along the insertion direction is provided on the inner cavity side wall of the vertical soldering board socket, and a limiting reinforcing groove is provided on the corresponding plug. The structure and cooperation relationship are the same as those of the wiring plug and the socket corresponding to the wiring plug, and will not be elaborated here.

[0081] The application scenarios of the above four types of connectors are as Figures 6a to 6c shown, including wire-to-board and board-to-board application scenarios. The maximum current-carrying capacity of these four small-size connectors can reach 40A in this scenario. In the wire-to-board application scenario, the cable 5 is connected to the wiring plug 11, and there are two choices for the socket cooperating with the wiring plug 11, namely the bent soldering board socket 21 and the vertical soldering board socket 22. Among them, the bent soldering board socket 21 is inserted into the horizontal PCB board 3, and the vertical soldering board socket 22 is inserted into the vertical PCB board 4, which is convenient for adapting to various space scenarios when selecting the socket. The pins of the socket are welded to the PCB board, thereby realizing wire-to-board current transmission.

[0082] In the board-to-board application scenario, the pins of the soldering board plug 12 are connected to the horizontal PCB board 3, and the other end is inserted into the bent soldering board socket 21. The pins of the bent soldering board socket 21 are connected to another horizontal PCB board 3, thereby realizing the current transmission between boards. The bent soldering board socket 21 can be inserted into the soldering board plug 12 or the wiring plug 11, and can realize the convenient switching between wire-to-board and board-to-board application scenarios.

[0083] The small-size high-current electrical connector and its adapted socket of the present utility model are small in size, large in current-carrying capacity, and high in space utilization rate, which is beneficial to the miniaturization development of the server.

[0084] The present invention relates to a small-volume, high-current electrical connector and its adapter socket. When the plug and socket are mated, a pull ring locking structure is adopted, which not only ensures the reliability of wire-to-board use scenarios, but also facilitates unlocking in confined spaces.

[0085] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A small-volume, high-current electrical connector, comprising an insulator and contacts inserted into the insulator, characterized in that: The sidewall of the insulator that matches the adapter connector is provided with a limiting reinforcing groove (113) extending in the mating direction.

2. The small-volume, high-current electrical connector according to claim 1, characterized in that: The insulator is provided with a locking groove (10101) extending along the connector insertion direction. The locking groove (10101) is used to engage with the locking claw (204) on the adapter connector for locking. The insulator is also provided with a sliding pressure plate (105) that slides in the insertion direction. When the locking claw on the adapter connector engages with the locking groove, the sliding pressure plate can slide to a locking position that prevents the locking claw on the adapter connector from dislodging from the locking groove.

3. The small-volume, high-current electrical connector according to claim 2, characterized in that: The locking groove sidewall is provided with a locking groove (10102) for snap-fit ​​engagement.

4. The small-volume, high-current electrical connector according to claim 2, characterized in that: The insulator is provided with an elastic element that causes the sliding pressure plate (105) to tend to move toward the insertion end.

5. The small-volume, high-current electrical connector according to claim 4, characterized in that: A stop structure (10103) is provided at the end of the insulator away from the plug end. The stop structure (10103) has a stop (10106) extending in the plugging direction on the side facing the plug end. A channel (10502) is provided on the side of the sliding pressure plate (105) away from the plug end. The channel (10502) and the stop (10106) can move relative to each other. A spring (106) is provided in the channel (10502), with one end abutting against the end face of the stop (10106) and the other end abutting against the side wall of the channel (10502) near the plug end.

6. The small-volume, high-current electrical connector according to claim 2, characterized in that: The outer surface of the insulator is provided with an inner sliding groove (10109) extending along the insertion direction and communicating with the locking groove (10101), and an outer sliding groove (10110) located on both sides of the inner sliding groove and extending along the insertion direction. The side wall of the inner sliding groove (10109) is provided with an inner sliding rail (10107) extending along the insertion direction, and the side wall of the outer sliding groove (10110) is provided with an outer sliding rail (10104) extending along the insertion direction. The sliding pressure plate (105) is slidably disposed in the inner sliding groove (10109) and the outer sliding groove (10110), and slidably cooperates with the outer sliding rail (10104) and the inner sliding rail (10107). The inner sliding rail and the outer sliding rail are provided with a stop (10105) to limit the movement range of the sliding pressure plate. The sliding pressure plate cooperates with the outer sliding groove so that the two sides of the sliding pressure plate do not protrude from the two sides of the insulator.

7. The small-volume, high-current electrical connector according to claim 2, characterized in that: The end of the sliding pressure plate (105) away from the insertion end is connected to the pull strap (107).

8. The small-volume, high-current electrical connector according to claim 2, characterized in that: The insulator has a cavity extending along the insertion direction, and a mounting groove (10108) for inserting a contact is provided in the cavity. The contact is a plate contact. A limiting groove is provided on the plate contact, with its extension direction perpendicular to the insertion direction. After the plate contact is inserted into the mounting groove (10108), a plug (104) is inserted into the limiting groove. The plug (104) also engages with the insulator during insertion.

9. The small-volume, high-current electrical connector according to claim 8, characterized in that: The portion of the plate contact away from the plug end is bent, and the bent portion is provided with pins that extend out of the insulator and connect to the PCB board.

10. A small-volume, high-current electrical connector adapter, comprising an insulator and contacts inserted into the insulator, characterized in that: The inner wall of the insulator is provided with limiting reinforcing ribs (211) extending along the interlocking direction.

11. The adapter connector for the small-volume, high-current electrical connector according to claim 10, characterized in that: The insulator is provided with a locking claw (204), which includes a claw (20401) extending in the insertion direction. The claw (20401) has a claw protrusion (20402) on one side for locking and engaging, and a space is left on the other side.

12. The adapter connector for the small-volume, high-current electrical connector according to claim 10, characterized in that: The contact is a bent structure, with one side being a spring claw that contacts the adapter contact, and the other side having a first socket pin (208) that extends out of the insulator and is not parallel to the insertion direction. The first socket pin is connected to the PCB board.

13. The adapter connector for the small-volume, high-current electrical connector according to claim 10, characterized in that: The insertion end of the contact is a spring claw that contacts the adapter contact. The side of the contact away from the insertion end is provided with a second socket pin (209) extending in the opposite direction to the insertion direction. The second socket pin is connected to the PCB board.

14. The adapter connector for the small-volume, high-current electrical connector according to claim 13, characterized in that: The contact is forcibly mounted in the cavity of the insulator by barbs, and the width of the cavity of the insulator at the insertion entrance end matches the thickness of the insertion hole structure.

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