A bipolar connector

Abstract

The utility model discloses a kind of bipolar connectors, mutually superimposed first terminal sheet and second terminal sheet, by bending the end of first elastic arm and second elastic arm in opposite and opposite direction to form corresponding contact, compared with the contact formed by bending in the same direction, the stability of guiding when plugging is greatly improved, effectively prevent the damage of contact and elastic arm in the process of insertion, guarantee the stability of plugging, while enhancing the elasticity of contact, furthermore, the surface of second wiring part is provided with elastic buckle, the inner wall of slot is provided with protruding block, terminal assembly is pressed on protruding block by elastic buckle and both sides are clamped in insulating shell positioning groove and fixed, limit the longitudinal direction of terminal assembly along the top end and bottom end of insulating shell, realize the multidirectional effective fixation of terminal assembly, whether conventional plug-in use and cable bending all do not affect terminal assembly loosening, reliability is strong guarantee the stability of terminal, reach the most stable transmission effect, prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of electrical connector technology, and in particular to a bipolar connector. Background Technology

[0002] A bipolar connector is a component used for electrical connections. Its core component integrates two independent conductive terminals within a single connector, allowing for the simultaneous transmission of two currents or signals. It is widely used in applications requiring compact and efficient connections, playing a crucial role particularly in electronic equipment, industrial control, and new energy fields.

[0003] A connector typically consists of an insulating housing, two conductive terminals inside the insulating housing for transmitting current, and a shielding plate on the surface of the insulating housing for shielding interference signals and grounding.

[0004] As the power density of electronic devices continues to increase, the current that connectors need to carry is also constantly increasing. To increase current capacity, a common approach is to increase the number of conductive terminals per pole, that is, to use two conductive terminals stacked and connected together to form a conductive component, thereby increasing the current.

[0005] Existing conductive component structures typically consist of two or more conductive terminals stacked and connected together. The ends of the elastic arms of the conductive terminals have protruding contacts. When multiple conductive terminals are stacked, the contact directions are all consistent, as in the connector disclosed in CN120527674A (see...). Figure 1 The conductive terminals are stacked together with a first terminal piece, a second terminal piece, and a third terminal piece, and the contact points A at the ends of the elastic arms of the terminals are all bent in the same direction. This structure has the following drawbacks: Since the contact points A are all bent in the same direction at the front ends of the elastic arms, there is a risk of misalignment and poor elastic contact when the connector is plugged in. That is, if the plugging position is not correct, the contact points or elastic arms may be bent and damaged, affecting the transmission effect and service life.

[0006] In addition, the existing terminals are only fixed in the insulating shell by slots, which is not stable enough. When the transmission cable bends, the terminals will swing with the bending of the cable, causing the terminals to be displaced. This results in poor contact after the connector and the corresponding socket are connected due to the displacement of the conductive or signal terminals. Utility Model Content

[0007] To address the aforementioned issues, this utility model provides a bipolar connector that offers reliable guidance during insertion, strong elastic contact, and effectively secures the terminal assembly, preventing terminal loosening and displacement, thereby enhancing the safety and stability of the connection.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a bipolar connector, including an insulating shell, two terminal assemblies, and two shielding plates; the insulating shell is provided with a forward-extending plug, the plug having a slot, the two terminal assemblies being fixedly disposed inside the insulating shell, and the terminal assembly including an elastic arm extending into the slot and a wiring portion for connecting external cables, the elastic arm being respectively disposed opposite to each other on two sides inside the slot, and the two shielding plates being respectively disposed on two sides outside the mating slot.

[0009] The terminal assembly includes a first terminal piece and a second terminal piece that are stacked and fixed together. The first terminal piece includes a first wiring portion, a plurality of first elastic arms extending from the first wiring portion, and a first contact point that is arc-bent from the end of the first elastic arm. The second terminal piece includes a second wiring portion, a plurality of second elastic arms extending from the second wiring portion, and a second contact point that is arc-bent from the end of the second elastic arm. The arc-bending direction of the first elastic arm is opposite to that of the arc-bending direction of the second elastic arm and they are bent in opposite directions.

[0010] The second wiring part is provided with an elastic buckle on its surface. The inner wall of the slot is provided with a protrusion that limits the movement along the bottom of the insulating shell. The insulating shell is provided with a positioning groove that corresponds to the two sides of the terminal assembly and limits the movement along the top of the insulating shell. The terminal assembly is pressed against the protrusion by the elastic buckle and the two sides are engaged in the positioning groove for fixation.

[0011] The beneficial effects of this utility model are as follows:

[0012] The first and second terminal pieces, which are stacked together, form corresponding contacts by bending the first and second elastic arms in opposite and opposite directions. Compared with contacts formed by bending in the same direction, the stability of the guide during insertion is greatly improved, effectively preventing damage to the contacts and elastic arms during insertion, ensuring the stability of insertion, and enhancing the elasticity of the contact.

[0013] In addition, the second wiring section has elastic buckles on its surface and corresponding protrusions on the inner wall of the slot. The terminal assembly is pressed against the protrusions by the elastic buckles, and at the same time, the two sides are locked in the positioning groove of the insulating shell. This limits the terminal assembly in the longitudinal direction of the top and bottom of the insulating shell, and achieves effective fixation of the terminal assembly in multiple directions. No matter the regular plugging and unplugging or the bending of the cable, it will not affect the loosening of the terminal assembly. The high reliability ensures the stability of the terminal, so as to achieve the most stable transmission effect and extend the service life. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an existing terminal assembly.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model.

[0016] Figure 3This is a structural schematic diagram of the terminal assembly.

[0017] Figure 4 yes Figure 3 Another perspective illustration.

[0018] Figure 5 This is an exploded view of the terminal assembly.

[0019] Figure 6 It is a cross-sectional view of the terminal assembly fixed inside the insulating body.

[0020] Figure 7 This is a schematic diagram of the structure inside the connector board.

[0021] Figure 8 This is a schematic diagram of the shielding sheet.

[0022] Figure 9 This is a schematic diagram of the outer side of the connector board (with the shielding plate removed). Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] Please see Figure 2 This embodiment discloses a bipolar connector, including an insulating shell 1, two terminal assemblies 2, and two shielding plates 3; the insulating shell 1 is provided with a forward-extending plug, and the plug has a slot 11 for plugging into an external device.

[0025] Two terminal assemblies 2 are fixedly installed inside the insulating housing 1. The terminal assembly 2 includes an elastic arm that extends into the slot 11 and a wiring part for connecting external cables. The elastic arms are respectively arranged on the two sides inside the slot 11 to achieve conductive connection through the contact of the terminal assemblies 2 on both sides inside the slot 11 after connecting to external devices. Two shielding plates 3 are respectively arranged on the two sides outside the slot 11 to shield interference signals and grounding after the connector is connected.

[0026] See Figure 3-5 The terminal assembly 2 includes a first terminal piece 21 and a second terminal piece 22 that are stacked and fixed together. The first terminal piece 21 includes a first wiring portion 211, a plurality of first elastic arms 212 extending from the first wiring portion 211, and a first contact 213 that is arc-bent from the end of the first elastic arm 212. The second terminal piece 22 includes a second wiring portion 221, a plurality of second elastic arms 222 extending from the second wiring portion 221, and a second contact 223 that is arc-bent from the end of the second elastic arm 222. The arc-bending direction of the first elastic arm 212 is opposite to that of the arc-bending direction of the second elastic arm 222 and they are bent in opposite directions.

[0027] In this embodiment, the first elastic arm 212 and the second elastic arm 222 are bent in opposite and opposite directions to form corresponding contacts. Specifically, both the first elastic arm 212 and the second elastic arm 222 extend forward, and the second elastic arm 222 extends to the front end of the first elastic arm 212. The end of the first elastic arm 212 is bent forward to form the first contact 213, and the end of the second elastic arm 222 is bent backward to form the second contact 223, so that the bending directions of the first contact 213 and the second contact 223 are opposite.

[0028] Compared to the contacts formed by bending the elastic arms of existing stacked terminal assemblies in the same direction, contacts formed by bending in opposite directions can greatly improve the stability of guidance during insertion. This is because the second elastic arm 222 is located at the front end and bends along the rear end to form the second contact 223. When an external device is inserted, the insertion path is consistent with the bending of the second elastic arm 222. The device first contacts the second contact 223 and then contacts the first contact 213. Therefore, the guidance is greatly enhanced, effectively preventing damage to the contacts and elastic arms during insertion, ensuring the stability of the insertion, and enhancing the elasticity of the contact.

[0029] In this embodiment, the insulating shell 1 includes a base 12 and two plug plates 13 extending forward from the base 12. The two plug plates 13 form a plug connector. The slot 11 is located between the two plug plates 13. The terminal assembly 2 extends from the base 12 to the slot 11. The shielding sheet 3 is fixed on the outer surface of the plug plate 13.

[0030] Please see Figure 6-7 To address the issue of the terminal assembly 2 being prone to loosening and instability, the inner wall of the slot 11 is provided with a protrusion 121 that limits the movement along the bottom of the insulating shell 1, and the insulating shell 1 is provided with a positioning groove 14 that corresponds to both sides of the terminal assembly 2 and limits the movement along the top of the insulating shell 1.

[0031] In the two terminal assemblies, the second wiring portion 222 of the second terminal piece 22 is provided with an elastic buckle 224. The top of the positioning groove 14 located inside the insulating shell 1 is closed. During the process of the terminal assembly passing through the base 12 to the slot 11, the two sides of the terminal assembly 2 are engaged with the positioning groove 14 to achieve positioning. The closed section at the top of the positioning groove 14 limits the position. The elastic buckle 224 presses against the top of the protrusion 121 through elastic action, limiting the position of the terminal assembly 2 in the longitudinal direction along the top and bottom of the insulating shell 1. This achieves effective fixation of the terminal assembly 2 in multiple directions. The terminal assembly 2 can be effectively fixed in multiple directions. The insertion and removal of the terminal assembly 2 and the bending of the cable do not affect the loosening of the terminal assembly 2. The high reliability ensures the stability of the terminal, so as to achieve the most stable transmission effect and extend the service life.

[0032] In terminal assembly 2, the surface of the first terminal piece 21 is provided with a plurality of openings 214, and the surface of the second terminal piece 22 is provided with locking posts 225 corresponding to the openings 214. In this embodiment, four openings 214 and four locking posts 225 are provided. The first terminal piece 21 and the second terminal piece 22 are fixed to the openings 214 by locking posts 225. In order to improve the stability and strength of the connection between the two terminal pieces, the locking posts 225 are locked to the openings 214 and extend outside the openings 214. The locking posts 225 extending outside the openings 214 are flanged and fixed to the surface of the first terminal piece. Specifically, the locking posts 225 extending outside the openings 214 can be pressed and flanged by a jig.

[0033] Please see Figure 8-9 The shielding plate 3 includes a fixing plate 31, with multiple contact arms 32 extending upward from one side of the fixing plate 31. In this embodiment, three contact arms 32 are provided and fixed to the outer surface of the plug-in plate 13. Multiple downward-extending pins 311 are provided along the side edge of the fixing plate 31. The upper surface of the base 12 is provided with sockets 122 corresponding to the pins 311. The shielding plate 3 is directly plugged into the sockets 122 for fixation via the pins 311. Compared with the existing shielding plate 3 which requires heat pressing for fixation, increasing the production process cost, this embodiment provides pins 311 on the fixing plate 31, which can be directly plugged into the sockets 122 of the base 12 for fixation. The structure is simple and greatly reduces the assembly cost.

[0034] As an implementation method, in order to ensure the stability of the contact arm 32 of the shielding plate 3 after the connector is plugged in, the outer surface of the plug plate 13 is provided with a groove 131 corresponding to the contact arm 32. The contact arm 32 is fixed in the groove 131. At the same time, the two sides of the contact arm 32 are also provided with locking blocks 321. The two sides of the groove 131 are provided with locking slots 132. The contact arm 32 is locked in the locking slots 132 by the locking blocks 321 and fixed in the groove 131.

[0035] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bipolar connector, comprising an insulating shell, two terminal assemblies, and two shielding plates; the insulating shell is provided with a forward-extending plug, the plug having a slot, the two terminal assemblies being fixedly disposed within the insulating shell, the terminal assemblies including resilient arms extending into the slots and connectors for connecting external cables, the resilient arms being respectively disposed opposite to each other on two sides inside the slots, and the two shielding plates being respectively disposed on two sides outside the mating slots; characterized in that, The terminal assembly includes a first terminal piece and a second terminal piece that are stacked and fixed together. The first terminal piece includes a first wiring portion, a plurality of first elastic arms extending from the first wiring portion, and a first contact point that is arc-bent from the end of the first elastic arm. The second terminal piece includes a second wiring portion, a plurality of second elastic arms extending from the second wiring portion, and a second contact point that is arc-bent from the end of the second elastic arm. The arc-bending direction of the first elastic arm is opposite to the arc-bending direction of the second elastic arm and bends in opposite directions. The second wiring part is provided with an elastic buckle on its surface. The inner wall of the slot is provided with a protrusion that limits the movement along the bottom of the insulating shell. The insulating shell is provided with a positioning groove that corresponds to the two sides of the terminal assembly and limits the movement along the top of the insulating shell. The terminal assembly is pressed against the protrusion by the elastic buckle, and the two sides are engaged and fixed in the positioning groove.

2. The bipolar connector according to claim 1, characterized in that: The insulating housing includes a base, two plug-in plates extending forward from the base, the two plug-in plates forming a plug connector, a slot located between the two plug-in plates, a protrusion disposed on the inner surface of the plug-in plate, a positioning groove disposed on the inner surface of the base, a terminal assembly extending from the base to the slot, and a shielding sheet fixed on the outer surface of the plug-in plate.

3. The bipolar connector according to claim 2, characterized in that: The shielding plate includes a fixing plate, multiple contact arms extending upward from one side of the fixing plate, the multiple contact arms being fixed to the outer surface of the plug plate, multiple downward extending pins being provided along the side edge of the fixing plate, and a socket corresponding to the pins being provided on the upper surface of the base, the shielding plate being fixed by inserting the pins into the socket.

4. The bipolar connector according to claim 3, characterized in that: The outer surface of the plug plate is provided with a groove corresponding to the contact arm, and the contact arm is fixed in the groove.

5. The bipolar connector according to claim 4, characterized in that: The contact arm is also provided with locking blocks on both sides, and the groove is provided with slots on both sides. The contact arm is fixed in the groove by locking the locking blocks onto the slots.

6. The bipolar connector according to claim 1, characterized in that: The first terminal piece has multiple openings on its surface, and the second terminal piece has corresponding locking pins on its surface. The first terminal piece and the second terminal piece are fixed by locking pins onto the openings.

7. The bipolar connector according to claim 6, characterized in that: The locking pin engages with the opening and extends outside the opening. The portion of the locking pin extending outside the opening is flanged and fixed to the surface of the first terminal piece.

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