Plug connector and connector assembly

Abstract

The invention relates to the related field of plug-in type electric connectors, in particular to a plug connector and a connector assembly, the plug connector comprises a plug shell, the plug shell comprises a wiring end and a plug-in end, more than two plug-in pairs are fixed in the plug-in end, each plug-in pair comprises an anode plug-in piece and a cathode plug-in piece, and the anode plug-in piece and the cathode plug-in piece are connected with each other. And the midpoints of the connecting lines of the paired positive and negative plug connectors are overlapped with the center of the plug end. One end, close to the wiring end, of each plugging pair is connected with a homopolar wire in the wiring end, so that when the plug is plugged into the socket at different circumferential plugging angles, a positive path and a negative path can be formed, and multiple wire outlet directions after plugging are realized by arranging the multiple plugging pairs on the plugging end; and the problem of installation interference in a narrow space is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of plug-in electrical connectors, and in particular to a plug connector and a connector assembly. Background Art

[0002] As connector technology matures, existing connectors tend to be lightweight and miniaturized while pursuing transmission efficiency. Miniaturized connectors can be used in narrow working spaces. In the prior art, there is a plug connector, including a curved shell, one end of which is a wiring terminal and the other end is a plug-in terminal. A pair of plug pairs are fixed in the plug-in terminal, and the plug pairs correspond to a pair of foolproof key slots. The existing plug connector can be used with Figure 1 The socket connector 1 shown is mated to form a connector assembly, and the socket connector 1 includes a socket housing 11. The socket housing 11 is provided with an insertion cavity that matches the plug connector on the side facing the plug end. A two-core plug-in is fixed inside the insertion cavity, and a single key 12 that can match with the foolproof key slot is provided on the plug end of the plug connector. When the plug and socket are mated, for this type of connector product with two cores, one positive and one negative, a "single key and double slot" mating form is adopted, which enables the plug to be mated with the socket in two circumferential directions (the two directions are 180° apart) to achieve the selection of the outlet direction, which can facilitate the bending of the outlet in a narrow space. However, this type of connector in the prior art can only achieve the selection of two outlet directions in a narrow installation space. In a certain use environment, when there is interference in multiple directions in the space, this type of existing connector cannot meet the use requirements. Summary of the invention

[0003] The purpose of the present invention is to provide a plug connector to solve the problem that the existing plug connector has few optional outlet directions when in use and cannot be used when there is much interference around the socket in a narrow space. The plug connector of the present invention provides a variety of optional outlet directions by setting multiple pairs of plug-in pairs, so that the plug connector and the socket connector can have a variety of plug-in angles when circumferentially plugged, effectively solving the problem of installation interference in a narrow space. At the same time, the purpose of the present invention is also to provide a connector assembly, including the plug connector of the present invention, to remove the restrictions of the original connector assembly in terms of the outlet direction.

[0004] To achieve the above-mentioned purpose, the present invention provides a plug connector, including a plug shell, one end of the plug shell is a wiring terminal, and the other end is a plug-in terminal, two or more pairs of plug-in pairs are fixed in the plug-in terminal, each plug-in pair includes a positive plug-in component and a negative plug-in component, and the midpoints of the connecting lines of the paired positive and negative plug-in components coincide with the center of the plug-in terminal, so that the adapter socket connector can be plugged into the plug-in terminal at different circumferential plug-in angles and plugged and connected with the corresponding plug-in pair.

[0005] Furthermore, the plug-in end is provided with a fool-proof keyway structure for mating with a matching socket connector.

[0006] Furthermore, each plug-in pair corresponds to two fool-proof keyway structures, and the circumferential angle between the two fool-proof keyway structures corresponding to each plug-in pair is 180°.

[0007] Furthermore, on the circumference of the plug-in components of all the plug-in pairs, of the two circumferential sides of any plug-in component, at least one of the plug-in components is a plug-in component with the same polarity as the plug-in component.

[0008] Furthermore, the connector has a welding cup at one end of the connection terminal for the core wires of the same polarity in the two-core conductors to pass through.

[0009] Furthermore, the number of the plug-in pairs is two.

[0010] Furthermore, the two plug-in pairs are arranged vertically and orthogonally.

[0011] Furthermore, the plug-in end is a circular plug-in end.

[0012] The plug connector provided by the present invention optimizes the original plug connector by increasing the number of plug connectors on the plug-in surface of the plug connector and optimizing the plug-in structure on the basis of the original plug connector having two-way outlet modes, thereby achieving more optional outlet directions for the plug connector in a narrow space, so that when the plug and the socket are plugged in, on the premise that the paired plug connectors are aligned, no matter which angle is selected for plugging in, two-way signal connection, one positive and one negative, can be achieved, and interfering objects can be avoided more conveniently.

[0013] The connector assembly of the present invention comprises a matching plug connector and a socket connector, wherein the plug connector comprises a plug shell, one end of the plug shell being a wiring terminal and the other end being a plug-in terminal, wherein more than two pairs of plug-in pairs are fixed in the plug-in terminal, each plug-in pair comprising a positive plug-in component and a negative plug-in component, wherein the midpoints of the connecting lines of the paired positive and negative plug-in components coincide with the center of the plug-in terminal, so that the matching socket connector can be plugged into the plug-in terminal at different circumferential plug-in angles and be plugged and connected with the corresponding plug-in pair.

[0014] Furthermore, the plug-in end is provided with a fool-proof keyway structure for mating with a matching socket connector.

[0015] Furthermore, each plug-in pair corresponds to two fool-proof keyway structures, and the circumferential angle between the two fool-proof keyway structures corresponding to each plug-in pair is 180°.

[0016] Furthermore, on the circumference of the plug-in components of all the plug-in pairs, of the two circumferential sides of any plug-in component, at least one of the plug-in components is a plug-in component with the same polarity as the plug-in component.

[0017] Furthermore, the connector has a welding cup at one end of the connection terminal for the core wires of the same polarity in the two-core conductors to pass through.

[0018] Furthermore, the number of the plug-in pairs is two.

[0019] Furthermore, the two plug-in pairs are arranged vertically and orthogonally.

[0020] Furthermore, the plug-in end is a circular plug-in end.

[0021] The present invention provides a connector assembly, which solves the problem that the existing two-core one positive and one negative transmission connector assembly can only provide a limited number of outlet directions when used in a narrow space, and cannot be used in an environment where there is multi-directional interference in the space. By increasing the number of plug-in pieces on the plug connector of the connector assembly, the plug connector and the socket connector can have multiple plug-in angles when circumferentially plugged in, so that the connector assembly can provide multiple outlet directions. Compared with the existing connector assembly, the connector assembly of the present invention can provide more outlet directions, enhancing the applicability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of an existing socket connector; Figure 2 It is a schematic structural diagram of the plug connector of the present invention; Figure 3 It is a schematic diagram of the plug connector of the present invention and the adapter socket being at a first plugging angle; Figure 4 is a schematic diagram of the plug connector of the present invention and the adapter socket being at a second plugging angle; Figure 5 is a schematic diagram of the plug connector of the present invention and the adapter socket being at a third plugging angle; Figure 6 is a schematic diagram of the plug connector of the present invention and the adapter socket being at a fourth plugging angle; Figure 7 A schematic diagram of the wiring method of the plug connector terminal of the present invention; In the figure: 1, socket connector; 101, first pin; 102, second pin; 11, socket shell; 12, single key; 2, plug connector; 20, plug shell; 211, first jack; 212, second jack; 213, third jack; 214, fourth jack; 22, foolproof keyway; 231, first core wire; 232, second core wire; 24, two-core conductor; 25, screw sleeve. DETAILED DESCRIPTION

[0023] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0024] The plug connector of the present invention is mainly aimed at plug connectors used in narrow spaces. Existing plug connectors used in narrow spaces, such as a plug-in connector assembly with curved outlets cited in the background technology, can adopt a "single key double slot" form to achieve two adjustable outlet directions (the adjustment directions are 180° apart). The matching plug connector and the two-core socket connector are plugged together to form a connector assembly to achieve two positive and negative paths for transmission. However, this connector assembly is only suitable for situations where the installation space is large or there are only a few directions in the installation space that will interfere with the outlet of the plug connector. When there is interference in multiple directions in the narrow installation space, such as interference at the two circumferential plug-in angles of the plug connector and the socket connector, it is difficult for the existing connector to meet the installation requirements.

[0025] Therefore, the plug connector of the present invention optimizes the existing plug connector. By arranging multiple pairs of plug-in pairs at the plug connector plugging end, the number of wire outlet directions of the plug connector in the prior art is optimized, and a variety of adjustable wire outlet methods in a small space are realized. When the plug and the socket are plugged together, on the premise that the paired plug-in parts are aligned, there can be a variety of circumferential plug-in angles for plugging together to achieve two-way signal connectivity of one positive and one negative.

[0026] Based on the above main concepts, embodiments are provided below for illustration.

[0027] like Figure 2 As shown, the plug connector in the embodiment is a plug connector 2 with a bent integrated shell as shown in the figure, the two ends of the plug shell 20 are respectively a plug-in terminal and a wiring terminal, the wiring terminal is connected with a two-core wire 24, and more than two pairs of plug pairs are fixed in the plug-in terminal, each plug pair includes a positive plug-in component and a negative plug-in component, the midpoints of the connecting lines of the paired positive and negative plug-ins coincide with the center of the plug-in terminal, and the ends of the plug pairs close to the wiring terminals are directly or indirectly connected to the corresponding wires of the same polarity in the wiring terminals, and two passages, one positive and one negative, can be formed after the plug connector 2 and the socket connector 1 are plugged in. Fixing more than two pairs of plug pairs at the plug end of the plug connector 2 allows the plug connector 2 to have more selectable circumferential plug-in positions, thereby having more circumferential plug-in angles when the plug connector 2 and the socket connector 1 are plugged in.

[0028] Based on the above invention concepts or embodiments, this document also provides an embodiment of a plug connector. In order to improve the plugging efficiency and plugging stability of the socket connector 1 and the plug connector 2 during the plugging process, anti-foolproof structures that can cooperate with each other are provided on the plugging surfaces of the plug connector 2 and the socket connector 1.

[0029] The foolproof structure can be a positioning hole set on the plug end of any one of the plug connector 2 and the socket connector 1, and a positioning pin set on the other plug end, and the positional relationship between the positioning pin and the positioning hole and the corresponding plug-in component is consistent. When the plug and socket are plugged in, the positioning is performed by matching the positioning pin and the positioning hole. Although this foolproof structure can ensure the stability of the connection and the accuracy of the plug-in, it increases the difficulty of processing the connector and affects the overall cost and processing cost of the connector. Therefore, in a more preferred embodiment, the plug connector 2 and the socket connector 1 are fixedly positioned by setting a foolproof keyway structure.

[0030] By circumferentially providing a foolproof keyway on the mating end of either the plug connector 2 or the socket connector 1, and providing a key that can cooperate with the foolproof keyway on the other. In this embodiment, the foolproof keyway 22 is provided on the circumferential surface of the plug end of the plug connector 2, and a single key 12 is provided on the plug cavity of the matching socket connector 1. On the premise that the plug connector of the plug connector is aligned and plugged with the plug connector on the socket connector, the single key 12 is exactly located in the foolproof keyway 22 corresponding to the plug pair in the plugged state. The foolproof key slots 22 maintain a corresponding relationship with each plug-in pair, and the plug-in pairs and the foolproof key slots can be in a one-to-one quantitative relationship. On the basis of this setting method, multiple pairs of plug-in pairs can be set to provide multiple plug-in angles in the circumferential direction. However, considering that the use environment of the plug connector 2 is a small space, the size of the plug end is limited, and the number of fixable plug-in pairs is limited. Therefore, in a more optimal embodiment, each plug-in pair corresponds to two foolproof key slots, and the circumferential angle between the two foolproof key slots 22 corresponding to each plug-in pair is 180°, that is, a pair of plug-in pairs can enable the plug to have two plug-in directions as in the prior art, so that the number of plug-in directions is twice the number of plug-in pairs, so as to provide the most output directions within the allowable range.

[0031] Based on the above invention concept or embodiment, this article also provides an embodiment of a plug connector. Combined with the influence of the size of the end face of the plug end on the distribution of the plug pairs, since the distance between the two plugs of each plug pair is consistent, the smaller the radial size of the end face of the plug end, the fewer the number of plug pairs that can be accommodated. In this embodiment, the number of plug pairs on the plug end is two pairs, and the corresponding number of foolproof key slots 22 is four. In order to maximize the application of the end face of the plug-in end, under the premise that the plug-in pairs on the socket connector 1 and the plug connector 2 maintain the same positional relationship with the corresponding fool-proof keyway structures, the two pairs of plug-in pairs on the plug connector 2 can be distributed at any circumferential position on the plug-in end of the plug connector 2. However, considering that the wide distribution of the position of the plug-in pairs in the circumferential direction is positively correlated with the installable range of the plug connector, for example, when the connection line between the positive and negative connectors of one pair of plug-in pairs is 45° to the connection line between the positive and negative connectors of another pair of plug-in pairs, the minimum angle covered between the outlet directions corresponding to the two adjacent circumferential plug-in angles of the two pairs of plug-in pairs is 45°. The two outlet directions are close in the circumferential direction and are easily affected by interference on the same side at the same time, resulting in failure of both outlet directions, affecting the applicability of the connector assembly. Therefore, in a more preferred embodiment, the plug-in pairs are evenly distributed on the plug-in end of the plug connector 2. On the premise that the number of the plug-in pairs is two, the two plug-in pairs are vertically orthogonal, that is, they are evenly arranged in the circumferential direction, and the fool-proof key slots 22 maintain the same distribution method as the corresponding plug-in pairs on the plug-in end of the plug connector 2.

[0032] The socket connector 1 and the plug connector 2 are connected by a pin-and-hole plug-in matching mode. In one embodiment, the plug on the socket is set as a pin structure with two cores. The plug on the plug end of the plug connector 2 is set with a corresponding socket structure. One end of each plug-in pair on the plug connector 2 at the terminal is respectively connected to the same-polarity core wire of the conductor. The conductor may have core wires equal to the number of connectors, which are respectively connected to the connectors. However, this connection method has certain requirements on the outer diameter of the conductor and the wiring method inside the terminal. Considering the use environment that the installation space is a narrow space, based on this, in one embodiment, among the connectors of all plug-in pairs, the same-polarity connectors are connected together to respectively connect the positive and negative core wires of the two-core conductors 24, that is, the first core wire 231 and the second core wire 232, and the part of the core wire extending to the plug-in end is stripped, and the two core wires are respectively passed through the soldering cups set on one end of the corresponding same-polarity connectors at the terminal of all connectors, and then the core wires are fixed and welded by tinning. On the basis of the above core wire connection method, taking into account that the position setting of the same-pole connectors in the plug-in pair will affect the welding method and the arrangement of the core wires, based on this, in a more preferred embodiment, on the circumference of the connectors of all plug-in pairs, on both sides of the circumference of any connector, at least one side of the connector is a connector of the same pole, which is conducive to simplifying the arrangement of the same-pole core wires of the connecting terminals during the welding process.

[0033] Specifically, when connecting each plug-in pair to the wiring terminal, the first core wire 231 is stripped of the portion of the core extending toward the plug-in terminal, and the portion of the core passes through the solder cups of the first jack 211 and the fourth jack 214 in turn, and then the solder cups are tinned and welded. At this time, the first jack 211 and the fourth jack 214 are connected in one way. The second core wire 232 is also welded in the same manner, and the portion of the core extending toward the plug-in terminal is stripped of the portion of the core, and the portion of the core passes through the solder cups of the second jack 212 and the third jack 213 in turn, and then the solder cups are tinned and welded. At this time, the second jack 212 and the third jack 213 are connected in another way. This installation method can ensure that the same-pole connectors and the same-pole core wires in the plug-in pair can be connected in one way. Based on the above-mentioned wiring method and the setting of the number of plug-in pairs, such as Figure 3-6 As shown, the plug has four adjustment modes when the plug and the socket are plugged in, and correspondingly, there are four circumferential plugging angles when the plug and the socket are plugged in.

[0034] On the basis of the above invention concept or embodiment, this document also provides an embodiment of a plug connector. The plug-in end of the plug connector 2 can be set to a variety of shapes that can accommodate the plug-in pair and the circumferentially distributed fool-proof keyway structure. For example, the plug-in end can be set to a square shape, and the corresponding plug-in cavity of the socket connector 1 is set to a square plug-in cavity that can be used in conjunction with the plug-in end. However, considering the application of this setting method, when it is necessary to switch the output mode, on the premise that the plug-in pins and sockets are completely disengaged, it is also necessary to completely pull out the plug-in end of the plug connector 2 from the plug-in cavity of the socket connector 1 and then rotate it in the circumferential direction to realign the pins and sockets for plug-in. Therefore, in one embodiment, in order to improve the plug-in efficiency and facilitate the arrangement of the plug-in pair and the fool-proof keyway structure, the plug-in end of the plug connector 2 is set to a circular plug-in end, and the corresponding plug-in cavity of the socket connector 1 is set to a circular plug-in cavity that can adapt to the circular plug-in end. Figure 2 and Figure 7 As shown, the plug-in end of the plug connector is circular. After the plug and the socket are plugged in, in order to ensure the stability of the connection of the plug-in section, in a more preferred embodiment, a screw sleeve 25 can be sleeved on the outside of the plug-in end of the plug shell 20, and the screw sleeve 25 is provided with an internal thread that can cooperate with the external thread provided on the outer peripheral surface of the plug-in cavity of the socket shell 11. The screw sleeve 25 is used to tighten the connection between the plug connector and the socket connector plug-in end to further ensure the stability of the connection.

[0035] The present invention further provides a connector assembly, including a plug connector and a socket connector adapted to be plugged in each other. The embodiment of the plug connector has the same structure as the above-mentioned plug connector 2 and will not be further described herein.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A plug connector, characterized in that: The invention comprises a plug shell (20), one end of the plug shell (20) being a wiring terminal and the other end being a plug-in terminal, wherein two or more plug-in pairs are fixed in the plug-in terminal, each plug-in pair comprising a positive plug-in component and a negative plug-in component, and the midpoints of the connecting lines of the paired positive and negative plug-in components coincide with the center of the plug-in terminal, so that the adapter socket connector (1) can be plugged into the plug-in terminal at different circumferential plug-in angles and plugged and connected with the corresponding plug-in pair.

2. The plug connector according to claim 1, characterized in that: The plug-in end is provided with a foolproof keyway structure for mating with the adapting socket connector (1).

3. The plug connector according to claim 2, characterized in that: Each plug-in pair corresponds to two fool-proof keyway structures, and the circumferential angle between the two fool-proof keyway structures corresponding to each plug-in pair is 180°.

4. The plug connector according to any one of claims 1 to 3, characterized in that: On the circumference where the plug-in components of all the plug-in pairs are located, at least one of the two circumferential sides of any plug-in component is a plug-in component with the same polarity as the plug-in component.

5. The plug connector according to any one of claims 1 to 3, characterized in that: All the connectors have a welding cup at one end of the connection terminal for the core wire of the same polarity in the two-core wire (24) to pass through.

6. The plug connector according to any one of claims 1 to 3, characterized in that: The number of the plug-in pairs is two.

7. The plug connector according to claim 6, characterized in that: The two plug-in pairs are arranged vertically and orthogonally.

8. The plug connector according to any one of claims 1 to 3, characterized in that: The plug end is a round plug end.

9. A connector assembly, comprising a matching plug connector and a socket connector, characterized in that: The plug connector is the plug connector according to any one of claims 1 to 8.

Images