Power connector and power transmission system

Abstract

The utility model provides a power supply connector and a power transmission system, comprising a first joint arranged on a first electric device and a second joint arranged on a second electric device, the first joint is provided with a plurality of power transmission pins, and the second joint is provided with a corresponding number of power transmission butt joint members. The end part of the power transmission pin is provided with at least two supporting parts, so that when the power transmission pin is in butt joint with the power transmission butt joint piece to transmit electric energy, the at least two supporting parts can be embedded in the end part of the power transmission butt joint piece in a mutually close manner; and the end part of the power transmission pin is clamped in the end part of the power transmission butt joint piece through the restoring force of the at least two supporting parts, so that the butt joint between the power utilization equipment and the first joint or the second joint is not easy to loosen even if the power utilization equipment moves and pulls the first joint or the second joint, and the power utilization safety in a mobile power utilization scene is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of power transmission and distribution, and specifically relates to a power connector and a power transmission system. Background Art

[0002] In industry, there is a demand for remote power distribution and mobile power consumption, that is, the location of the equipment that needs power is relatively far away from the power source, and the equipment needs to be moved during use. For example, at a construction site, there are multiple construction equipment that need power, and the power distribution cabinet closest to the construction site is often hundreds of meters away or even farther, and power needs to be transmitted to the construction equipment from a distant power distribution cabinet. At present, a common method is to use an ordinary plug to insert into the power socket of the distribution cabinet, and the cable connected to the ordinary plug extends to the vicinity of the power equipment. The end of the cable is directly connected to the power equipment, or connected to the socket used at the construction site, and then the plug of the power equipment is inserted into the socket used at the construction site, and then the power operation is started. Based on the length of the cable, the power equipment can be moved within a certain range and maintain power supply. Such a remote power distribution method still has safety issues. The connection between ordinary plugs and power sockets and construction site sockets is not firm. It is easy for electrical equipment to pull ordinary plugs when moving, causing the connection between them and power sockets or construction site sockets to loosen, resulting in power interruption. At the construction site, unexpected power interruption can lead to construction quality problems and even serious consequences such as casualties among construction workers.

[0003] On the other hand, all these mobile lines, such as cables connected to the power grid through distribution cabinets and sockets used on construction sites, are energized, regardless of whether they are connected to electrical equipment. Therefore, on-site construction workers are at risk of accidentally touching the conductive terminals and getting electric shock. Utility Model Content

[0004] The utility model is designed to solve the above problems and aims to provide a power connector and a power transmission system that can firmly connect and supply power between power distribution equipment such as power transmission cables. The utility model adopts the following technical solutions:

[0005] The utility model provides a power connector, which is used to electrically connect a first power transmission and distribution device with a second power transmission and distribution device, and is characterized in that it includes: a first connector arranged on the first power transmission and distribution device; and a second connector arranged on the second power transmission and distribution device, wherein the first connector includes a first main body with a first engaging portion and at least two power transmission needles and at least two signal needles arranged through the first main body, and the second connector includes a second main body with a second engaging portion and a corresponding number of power transmission docking pieces and signal docking pieces arranged through the second main body, the second engaging portion is used to cooperate with the first engaging portion to engage the outer end of the first main body with the outer end of the second main body, the end of the power transmission needle is columnar in shape, and the end has at least two supporting parts, and a gap is provided between the at least two supporting parts, and the end of the power transmission docking piece is tubular, and the at least two supporting parts are used to abut against the inner surface of the power transmission docking piece.

[0006] The power connector provided by the utility model may also have such a technical feature, wherein the number of the signal pins and the signal docking parts are both two, which are used to cooperate with two signal lines to form a closed detection signal loop, and the two signal lines are connected to a signal power supply, and the signal power supply is a 5V~24V electrical signal independent of the power supply.

[0007] The power connector provided by the utility model may also have such technical features, wherein the first engaging portion includes a cylindrical protrusion and a plurality of strip-shaped protrusions connected to the inner side of the cylindrical protrusion, the second engaging portion includes an annular groove matching the cylindrical protrusion and strip-shaped grooves respectively matching each of the strip-shaped protrusions, the power transmission needle and the signal needle are respectively arranged between the cylindrical protrusion and the strip protrusion, and the power transmission docking piece and the signal docking piece are respectively arranged between the annular groove and the strip groove.

[0008] The power connector provided by the utility model may also have such a technical feature, wherein at least one clamping groove is arranged on the outer peripheral surface of the second engaging portion, the outer end portion of the first main body also has a cylindrical guide portion, which is arranged on the outer periphery of the first engaging portion, and the inner side of the guide portion has at least one guide clamping block, which is used to cooperate with the at least one clamping groove to clamp the first main body and the second main body.

[0009] The power connector provided by the utility model may also have such technical features, wherein the guide clamping block is in a triangular block shape, and one vertex of which is close to the outer edge of the guide portion, the clamping groove has a guide groove section, a turning groove section and a clamping groove section connected in sequence, the guide groove section has an opening for allowing the guide clamping block to enter, and a guide side wall for moving the guide clamping block toward the clamping section, and the side wall of the clamping groove section is used to abut against the edge of the guide clamping block.

[0010] The power connector provided by the utility model may also have such technical features, wherein the first power transmission and distribution device and the second power transmission and distribution device are both power transmission cables, and the first connector also includes: a first shell, one end of the power transmission cable is inserted into the first shell; a first cable seal is arranged between the first shell and the power transmission cable, and is used to seal between the two; and a first cable fastener is arranged at one end of the first shell, and is used to fix one end of the power transmission cable, and the second connector also includes: a second shell, one end of the power transmission cable is inserted into the second shell; a second cable seal is arranged between the second shell and the power transmission cable, and is used to seal between the two; and a second cable fastener is arranged at one end of the second shell, and is used to fix one end of the power transmission cable.

[0011] The power connector provided by the utility model may also have such technical features, wherein the first power transmission and distribution device is a distribution box, having a live wire, a neutral wire, a ground wire, two signal wires and a relay, the relay having two signal ends, the first connector being arranged on the distribution box, the three power transmission pins including a ground pin and two power pins, the ground pin being connected to the ground wire, the two power pins being respectively connected to the live wire and the neutral wire through the relay, and there being two signal pins, one of the signal pins being connected to one of the signal lines, the other of the signal pins being connected to one signal end of the relay, and the other signal end of the relay being connected to another of the signal lines.

[0012] The power connector provided by the utility model may also have such technical features, wherein the second power transmission and distribution device is a distribution box, having a live wire, a neutral wire, a ground wire, two signal wires and a relay, the relay having two signal ends, the second connector being arranged on the distribution box, the second connector also comprising a seat body, arranged on the distribution box, the second main body being arranged through the seat body, the three power transmission docking parts comprising a grounding docking part and two electric energy docking parts, the grounding docking part being connected to the ground wire, the two electric energy docking parts being connected to the live wire and the neutral wire through the relay respectively, the number of the signal docking parts being two, one of the signal docking parts being connected to one of the signal wires, the other of the signal docking parts being connected to one of the signal ends of the relay, and the other signal end of the relay being connected to another of the signal wires.

[0013] The power connector provided by the utility model may also have such technical features, wherein the second connector also includes: a protective cover, rotatably arranged on the seat body; and a reset drive member, arranged between the seat body and the protective cover, for driving the protective cover to rotate toward the seat body, and when the protective cover is pressed against the seat body, the protective cover completely covers one end of the second body.

[0014] The utility model provides a power transmission system, characterized in that it comprises: at least two power transmission and distribution devices; and at least one of the above-mentioned power connectors, which is used for electrically connecting the two power transmission and distribution devices.

[0015] Function and effect of utility model

[0016] According to the power connector and power transmission system of the utility model, it includes a first connector arranged on a first electrical device and a second connector arranged on a second electrical device, wherein, since the first connector has at least two power transmission needles, the second connector has a corresponding number of power transmission docking parts, and the end of the power transmission needle has at least two supporting parts, when the power transmission needle and the power transmission docking part are docked to transmit electric energy, the at least two supporting parts can be closely embedded in the end of the power transmission docking part, and the end of the power transmission needle is clamped in the end of the power transmission docking part by the restoring force of the at least two supporting parts, so that even when the power-consuming equipment moves and pulls the first connector or the second connector, the docking between the two is not easy to loosen, thereby ensuring the safety of power use in mobile power use scenarios. In addition, since the first connector has at least two signal needles and the second connector has a corresponding number of signal docking parts, the corresponding detection can also be achieved through the signal needle and signal docking part independent of the power transmission needle, further improving the safety of power use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a three-dimensional diagram of the power connector in the first embodiment of the utility model in use;

[0018] Figure 2 It is a three-dimensional diagram of the first joint in the first embodiment of the utility model;

[0019] Figure 3 It is a structural exploded view of the first joint in the first embodiment of the utility model;

[0020] Figure 4 It is a three-dimensional diagram of the first main body in the first embodiment of the utility model;

[0021] Figure 5 It is an orthographic projection diagram of the first main body in the first embodiment of the utility model;

[0022] Figure 6 It is a three-dimensional diagram of the lock ring in the first embodiment of the utility model;

[0023] Figure 7 It is a three-dimensional diagram of the power transmission needle in the first embodiment of the utility model;

[0024] Figure 8 It is a three-dimensional diagram of the signal needle in the first embodiment of the utility model;

[0025] Fig. 9 is a cross-sectional view of the first joint in the first embodiment of the utility model;

[0026] Fig.10 is a three-dimensional diagram of the second joint in the first embodiment of the utility model;

[0027] Fig.11 It is a three-dimensional diagram of the second main body in the first embodiment of the utility model;

[0028] Fig.12 It is a three-dimensional diagram of the power transmission docking piece in the first embodiment of the utility model;

[0029] Fig.13 It is a three-dimensional diagram of the signal docking member in the first embodiment of the utility model;

[0030] Fig.14 This is a schematic diagram of the circuit structure of the power distribution cabinet in the first embodiment of the utility model;

[0031] Fig.15 It is a three-dimensional diagram of the power connector in the second embodiment of the utility model in the use state;

[0032] Fig.16 It is a structural exploded view of the second joint in the second embodiment of the utility model;

[0033] Fig.17 It is a three-dimensional diagram of the power connector in the third embodiment of the present utility model in use;

[0034] Fig.18 It is a three-dimensional diagram of the first joint in the third embodiment of the present utility model;

[0035] Fig.19 This is a schematic diagram of the circuit structure of the mobile distribution box in the third embodiment of the present utility model;

[0036] Fig. 20 It is a three-dimensional diagram of the power transmission system in the fifth embodiment of the present utility model.

[0037] Reference numerals:

[0038] Power connector 100; first connector 10; first body 11; first engaging portion 111; cylindrical protrusion 1111; columnar protrusion 1112; strip protrusion 1113; first mounting portion 112; power transmission pin mounting hole 112a; signal pin mounting hole 112b; locking ring connecting portion 113; triangular notch 113a; trapezoidal notch 113b; annular groove 113c; first housing limiting portion 114; first housing connecting portion 115; first housing 12; locking ring 13; locking ring body 131; guide clamping block 132; triangular block 133; trapezoidal block 134; marking assembly 135; guide block indicator 1351; unlock indicator 1352; unlock direction indicator 1353; first cable fastener 14; power transmission needle 15; power transmission needle limiter 151; power transmission needle fitting portion 152; power transmission needle plug-in portion 153; support portion 1531; signal needle 16; signal needle limiter 161; signal needle fitting portion 162; signal needle plug-in portion 163; first sealing ring 171; first sealing pad 172; first cable sealing ring 173; power transmission needle 15; power transmission needle limiter 151; power transmission needle fitting portion 152; power transmission needle plug-in portion 153; support portion 1531; signal needle 16; signal needle limiter 161; signal needle fitting portion 162; signal needle plug-in portion 163; first sealing ring 171; first sealing pad 172; first cable sealing ring 173; power transmission needle 15 The box mounting member 19; the second joint 20; the second main body 21; the fixing portion 211; the second engaging portion 212; the cylindrical portion 2121; the clamping groove 21211; the guide groove section 21211a; the turning groove section 21211b; the clamping groove section 21211c; the columnar portion 2122; the power transmission docking member mounting hole 2122a; the crescent-shaped columnar portion 2123; the signal docking member mounting hole 2123a; the third engaging portion 213; the cover connecting portion 214; the second housing limiting portion 215; the second housing connecting portion 216; the anti-locking portion Protective cover 22; power transmission docking piece 23; power transmission docking piece limiting portion 231; power transmission docking piece interlocking portion 232; power transmission docking piece docking portion 233; signal docking piece 24; signal docking piece limiting portion 241; signal docking piece interlocking portion 242; signal docking piece docking portion 243; second sealing gasket 251; second cable sealing ring 252; second shell 26; second cable fastener 27; power transmission cable 200; power distribution cabinet 300; relay 310; mobile distribution box 400; relay 410; power transmission system 1000. DETAILED DESCRIPTION

[0039] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the power connector and power transmission system of the present invention are specifically described below in conjunction with embodiments and drawings.

[0040] <Example 1>

[0041] This embodiment provides a power transmission system for remotely distributing power to power-consuming equipment and enabling mobile power consumption of user equipment. The power transmission system includes a plurality of power transmission and distribution devices and a plurality of power connectors for electrically connecting two adjacent power transmission and distribution devices.

[0042] Figure 1 It is a three-dimensional diagram of the power connector in use in this embodiment.

[0043] like Figure 1 As shown, the power connector 100 of this embodiment is used to electrically connect the power distribution cabinet 300 with the power transmission cable 200 , that is, the first power transmission and distribution device is the power transmission cable 200 , and the second power transmission and distribution device is the power distribution cabinet 300 .

[0044] The power connector 100 includes a first connector 10 (male plug) and a second connector 20 (female power socket). The first connector 10 is installed at one end of the power transmission cable 200, and the second connector 20 is installed on the power distribution cabinet 300. The first connector 10 and the second connector 20 are plugged together, so that the power transmission cable 200 and the power distribution cabinet 300 are electrically connected, so that the electric energy is distributed to the power transmission cable 200 through the power distribution cabinet 300, and then transmitted to various power-consuming devices or the next-level mobile distribution box through the power transmission cable 200.

[0045] Figure 2 is a stereogram of the first joint in this embodiment, Figure 3 It is a structural exploded view of the first joint in this embodiment.

[0046] like Figure 2 and Figure 3 As shown, the first connector 10 includes a first body 11 , a first shell 12 , a locking ring 13 (guide portion), a first cable fastener 14 , three power transmission pins 15 , two signal pins 16 , a first sealing ring 171 , a first sealing pad 172 and a first cable sealing ring 173 .

[0047] Figure 4 is a three-dimensional diagram of the first body in this embodiment, Figure 5 It is an orthographic projection diagram of the first subject in this embodiment.

[0048] like Figure 4 and Figure 5 As shown, the first body 11 is used to fix three power transmission pins 15 and two signal pins 16 , and both the power transmission pins 15 and the signal pins 16 are installed through the first body 11 .

[0049] The first body 11 includes a first fitting portion 111 , a first mounting portion 112 , a locking ring connecting portion 113 , a first housing limiting portion 114 , and a first housing connecting portion 115 , which are coaxially arranged.

[0050] The first mounting portion 112 is roughly cylindrical, and is provided with three power transmission needle mounting holes 112a and two signal needle mounting holes 112b extending axially therethrough, all of which are circular holes. Slightly raised "1", "2", and "3" are respectively provided on the end faces of the first mounting portion 112 next to the three power transmission needle mounting holes 112a, and "A" and "B" are respectively provided on the end faces of the first mounting portion 112 next to the two signal needle mounting holes 112b.

[0051] The first engaging portion 111 includes a cylindrical protrusion 1111, a columnar protrusion 1112 and four strip protrusions 1113, all of which extend from one end face of the first mounting portion 112 and have the same extension length. The outer diameter of the cylindrical protrusion 1111 is substantially consistent with the outer diameter of the first mounting portion 112. The columnar protrusion 1112 is arranged in the middle of the inner side of the cylindrical protrusion 1111, approximately at the central axis of the cylindrical protrusion 1111. One end of the three strip protrusions 1113 is connected to the outer periphery of the columnar protrusion 1112, and the other end is connected to the inner periphery of the cylindrical protrusion 1111, and the angle between two adjacent ones of the three strip protrusions 1113 is approximately 60 degrees. The two ends of another strip protrusion 1113 are respectively connected to the inner periphery of the cylindrical protrusion 1111, and the strip protrusion 1113 is relatively close to one end of the cylindrical protrusion 1111 in the radial direction. Therefore, the four strip-shaped protrusions 1113 divide the space inside the cylindrical protrusion 1111 into three larger parts and a crescent-shaped part. The three power transmission needle mounting holes 112a are respectively arranged at the corresponding three larger parts and arranged in a triangular shape. The two signal needle mounting holes 112b are arranged at the corresponding crescent-shaped part.

[0052] The lock ring connection portion 113 further extends outward from the outer periphery of the first mounting portion 112, and is of a special shape, which can be roughly regarded as comprising two layers of annular parts, wherein a triangular notch 113a and two trapezoidal notches 113b are formed on the annular part close to the first fitting part 111, and the two trapezoidal notches 113b are formed at both ends of the radial direction of the annular part. An annular groove 113c communicating with the triangular notch 113a and the trapezoidal notch 113b is also formed between the two layers of annular parts. Therefore, the triangular block 133 and the trapezoidal block 134 on the locking ring 13 are respectively aligned with the triangular notch 113a and the trapezoidal notch 113b on the first main body 11, and the locking ring 13 is axially inserted into the first main body 11 until the triangular block 133 and the trapezoidal block 134 pass through the corresponding notches respectively, and then the locking ring 13 is axially rotated to make the triangular notch 113a and the trapezoidal notch 113b move along the annular groove 113c to be axially offset from the corresponding notches, and the locking ring 13 is then installed on the first main body 11 and is axially clamped.

[0053] The first shell limiting portion 114 is used to limit the first shell 12 , and further extends outward from the outer periphery of the first mounting portion 112 , and is in the shape of an annular plate.

[0054] The first housing connection portion 115 is used to connect the first housing 12. The first housing connection portion 115 is cylindrical and has a diameter smaller than the outer diameter of the first housing stop portion 114. An outer peripheral surface of the first housing connection portion 115 is formed with an external thread.

[0055] The first shell 12 is generally in the shape of an elongated cylinder, one end of which has an internal thread and can be connected to the first shell connection portion 115; the other end has a relatively small diameter and has an external thread, and also has a plurality of square columnar protrusions arranged in a ring shape, and the extension direction of each square columnar protrusion is consistent with the axial direction of the first shell 12, and the other end is used to connect the first cable fastener 14. In addition, the outer peripheral surface of the first shell 12 has a plurality of strip-shaped grooves, and a reinforcing rib structure is formed between two adjacent strip-shaped grooves to strengthen the structural strength and increase the friction when holding.

[0056] Figure 6 2 is a three-dimensional diagram of the locking ring in this embodiment.

[0057] like Figure 6 As shown, the lock ring 13 includes a cylindrical lock ring body 131 , a guide clamping block 132 , a triangular clamping block 133 , two trapezoidal clamping blocks 134 , and a marking component 135 .

[0058] The guide clamping block 132 is disposed on the inner side surface of the lock ring body 131 and close to one end thereof. The guide clamping block 132 is in a triangular block shape, and its surface direction is perpendicular to the radial direction of the lock ring body 131, and one vertex of the triangle faces the above-mentioned one end of the lock ring body 131. When the lock ring 13 is installed on the first body 11, the vertex of the guide clamping block 132 faces outward.

[0059] The triangular block 133 and the two trapezoidal blocks 134 are also arranged on the inner side of the lock ring body 131 and close to the other end thereof, and their distribution is adapted to the triangular notch 113a and the two trapezoidal notches 113b on the first body 11. The cross section of the triangular block 133 along the axial direction of the lock ring body 131 is roughly triangular, and the cross section of the trapezoidal block 134 along the axial direction of the lock ring body 131 is roughly trapezoidal. Therefore, the lock ring 13 is fitted onto the first body 11, and the triangular block 133 and the two trapezoidal blocks 134 pass through the triangular notch 113a and the two trapezoidal notches 113b respectively, and then the lock ring 13 is axially rotated, so that the triangular block 133 and the two trapezoidal blocks 134 are respectively embedded in the annular grooves connected to the notches, and the lock ring 13 can be installed on the first body 11.

[0060] The marking component 135 is disposed on the outer side of the locking ring body 131 , and includes a guide block indicator 1351 , an unlocking indicator 1352 , and an unlocking direction indicator 1353 .

[0061] The guide block indicator 1351 is a triangular protrusion, and its position and orientation respectively correspond to the position and orientation of the guide clamping block 132 on the inner side of the locking ring body 131 . Therefore, the user can clearly know the position and orientation of the inner guide clamping block 132 by observing the guide block indicator 1351 .

[0062] The unlock indicator 1352 is a protrusion in the shape of an open lock, and the unlock direction indicator 1353 next to it is an arrow-shaped protrusion. The user can clearly know in which direction to rotate the lock ring 13 to unlock it by observing the unlock indicator 1352 and the unlock direction indicator 1353.

[0063] The first cable fastener 14 is roughly in the shape of a dome, and its inner side surface has an internal thread, which is used to be installed at the other end of the first housing 12. The middle part of the top surface of the first cable fastener 14 has a through cable clamping hole 14a, which can allow one end of the power transmission cable 200 to pass through and clamp it. In addition, the outer side surface of the first cable fastener 14 has a plurality of recesses, so that the cross-section of the axial middle part thereof is roughly hexagonal, and each recess has a plurality of strip-shaped grooves, which are used to facilitate manual operation and increase friction during operation.

[0064] The three power transmission pins 15 are respectively mounted in the three power transmission pin mounting holes 112a on the first body 11. One of the power transmission pins 15 is used as a ground pin, and the other two are used as power pins.

[0065] Figure 7 3D is a perspective view of the power transmission needle in this embodiment.

[0066] like Figure 7 As shown, the power transmission needle 15 includes a power transmission needle limiting portion 151, a power transmission needle fitting portion 152 and a power transmission needle plugging portion 153 which are coaxially connected in sequence.

[0067] The power transmission needle limiting portion 151 is cylindrical, and one end of the limiting portion 151 has a connection groove.

[0068] The power transmission needle fitting portion 152 is disposed at the other end of the power transmission needle limiting portion 151, and includes a cylindrical section, a truncated cone section, a cylindrical section, and a truncated cone section that are coaxially connected in sequence. The diameters of the two cylindrical sections are the same, and the maximum diameter of the truncated cone section is slightly larger than the diameter of the cylindrical section, so a step is formed between adjacent truncated cone sections and cylindrical sections.

[0069] The overall shape of the power transmission needle plug part 153 is roughly cylindrical, and has four support parts 1531. The extension direction of each support part 1531 is consistent with the axial direction of the power transmission needle 15. The cross section of the support part 1531 in the extension direction is fan-shaped, and the outer end of each support part 1531 has a chamfer. The four support parts 1531 are centrally symmetrically distributed along the central axis of the power transmission needle 15. There is a strip-shaped gap between two adjacent support parts 1531, and a cylindrical groove is formed between the inner ends of the four support parts 1531.

[0070] The power transmission needle engaging portion 152 of the power transmission needle 15 is engaged in the corresponding power transmission needle mounting hole 112a and clamped, the power transmission needle plug-in portion 153 is exposed from one end surface of the first main body 11, and the power transmission needle limiting portion 151 is exposed from the other end surface of the first main body 11 and abuts against the end surface, that is, the power transmission needle 15 is arranged on the first main body 11 through.

[0071] In this embodiment, the sizes of the three power transmission needles 15 are all the same.

[0072] Figure 8 is a three-dimensional diagram of the signal pin in this embodiment.

[0073] like Figure 8 As shown, the signal pin 16 includes a signal pin limiting portion 161 , a signal pin fitting portion 162 and a signal pin plugging portion 163 which are coaxially connected in sequence.

[0074] The signal needle limiting portion 161 includes a cylindrical section and a semi-cylindrical section, and a connecting notch 161 a is formed at the outer end of the signal needle limiting portion 161 .

[0075] The signal needle fitting portion 162 includes a coaxially connected cylindrical section and a truncated cone section. The diameter of the cylindrical section is smaller than the diameter of the signal needle limiting portion 161 , and the maximum diameter of the truncated cone section is slightly larger than the cylindrical section, thus forming a step.

[0076] The signal pin inserting portion 163 is cylindrical and has a chamfered outer end.

[0077] The signal pin engaging portion 162 is engaged in the corresponding signal pin mounting hole 112b and clamped, the signal pin plug-in portion 163 is exposed from one end surface of the first body 11, and the signal pin limiting portion 161 is exposed from the other end surface of the first body 11 and abuts against the end surface, that is, the signal pin 16 is also arranged on the first body 11 in a penetrating manner.

[0078] In this embodiment, the two signal pins 16 have the same size, and the overall diameter of the signal pin 16 is much smaller than that of the power transmission pin 15 .

[0079] Fig. 9 It is a cross-sectional view of the first connector in this embodiment. To show the relative position relationship between the power transmission pin and the signal pin, the first body is omitted in the figure, and the position of the end face of the first body is shown by a dotted line.

[0080] like Fig. 9 As shown, in this embodiment, the protruding height of the power transmission pin 15 as the ground pin relative to the end surface of the first body 11 is 1.5 mm greater than the protruding height of the other two power transmission pins 15 as the power pins. The protruding height of the two signal pins 16 relative to the end surface of the first body 11 is only 3 mm, which is much smaller than the three power transmission pins 15. In this way, when the first connector 10 is plugged into the second connector 20, the ground pin will be connected first, and the two signal pins 16 can be connected after the plugging is in place.

[0081] The power transmission cable 200 has a sheath and a plurality of wire cores arranged inside the sheath, including three power transmission wire cores and two signal wire cores. When one end of the power transmission cable 200 is connected to the first connector 10, the three power transmission wire cores are respectively embedded in the connection grooves of the three power transmission pins 15 to connect with the power transmission pins, and the two signal wire cores are respectively connected to the outer ends of the signal pin limit portions 161 of the two signal pins 16.

[0082] The first sealing ring 171 is annular, and its cross section is circular. The first sealing ring 171 is sleeved on the outside of the first body 11 and is used to seal the connection between the first connector 10 and the second connector 20 when they are plugged in.

[0083] The first sealing gasket 172 is annular and is mounted on the outside of the first body 11 . One side of the first sealing gasket abuts against the first shell limiting portion 114 and the other side abuts against one end of the first shell 12 , so as to seal between the first body 11 and the first shell 12 .

[0084] The first cable sealing ring 173 is cylindrical. When one end of the power transmission cable 200 is connected to the first connector 10, the first cable sealing ring 173 is embedded between the outer peripheral surface of the power transmission cable 200 and the inner side surface of the first shell 12, thereby sealing the space between the two.

[0085] Fig.10 4 is a three-dimensional diagram of the second joint in this embodiment.

[0086] like Fig.10 As shown, the second connector 20 includes a second body 21, a protective cover 22, three power transmission docking members 23, two signal docking members 24, a second sealing gasket 251 and a plurality of fasteners.

[0087] Fig.11 It is a three-dimensional diagram of the second body in this embodiment.

[0088] like Fig.11 As shown, the second body 21 includes a fixing portion 211 , a second engaging portion 212 , a third engaging portion 213 and a cover connecting portion 214 .

[0089] The fixing portion 211 is substantially in the shape of a square plate with rounded corners, and has mounting holes at its four corners respectively. The second body 21 can be fixed to the power distribution cabinet 300 by providing fasteners at each mounting hole.

[0090] The second engaging portion 212 extends from the middle of one surface of the fixing portion 211 , and its overall shape can be roughly regarded as a cylinder. The second engaging portion 212 includes a cylindrical portion 2121 , three columnar portions 2122 and a crescent-shaped columnar portion 2123 .

[0091] The cylindrical portion 2121 is generally cylindrical in shape, and the edge of its outer end is rounded. Two clamping grooves 21211 are provided on the outer side of the cylindrical portion 2121, which are respectively arranged at the two ends of the radial direction of the cylindrical portion 2121, and are used to cooperate with the guide clamping block 132 on the lock ring 13 to realize the clamping between the lock ring 13 and the second body 21. The clamping groove 21211 has a guide groove section 21211a, a turning groove section 21211b and a clamping groove section 21211c connected in sequence.

[0092] The guide groove section 21211a forms an opening at the outer end of the cylindrical portion 2121, and the guide groove section 21211a extends approximately along the axial direction of the cylindrical portion 2121, and the width of the guide groove section 21211a gradually narrows from the outer end to the other end of the cylindrical portion 2121. The opening of the guide groove section 21211a is slightly larger than the side length of the guide clamping block 132.

[0093] The clamping groove section 21211 c extends approximately along the circumference of the cylindrical portion 2121 , and along its extending direction, the width of the clamping groove section 21211 c remains approximately consistent, and the width of the clamping groove section 21211 c is slightly larger than the axial length of the guide clamping block 132 .

[0094] The turning groove section 21211b is connected between the guide groove section 21211a and the clamping groove section 21211c, so that the extension direction of the clamping groove 21211 is turned. A side wall of the guide groove section 21211a is connected to the side wall of the turning groove section 21211b to form a side wall extending from the opening toward the clamping groove section 21211c, which is used to guide the guide clamping block 132 during docking.

[0095] The extension directions of the three columnar parts 2122 and the crescent-shaped columnar part 2123 are all consistent with the axial direction of the cylindrical part 2121. An annular embedding groove 212a matching the cylindrical protrusion 1111 is formed between the outer arc surfaces of the three columnar parts 2122 and the crescent-shaped columnar part 2123 and the inner side surface of the cylindrical part 2121, and three strip embedding grooves 212b matching the three strip protrusions 1113 and a column embedding groove 212c matching the columnar protrusion 1112 are formed between the mutually opposing outer side surfaces of the three columnar parts 2122.

[0096] Each columnar portion 2122 has a circular through-hole 2122a for mounting a power transmission docking piece, and each crescent-shaped columnar portion 2123 has two circular through-hole 2123a for mounting a signal docking piece.

[0097] The third engaging portion 213 extends from the middle of the other surface of the fixing portion 211, and is cylindrical, and is used to engage in the corresponding installation through hole on the power distribution cabinet 300. The extension length of the third engaging portion 213 is greater than the thickness of the power distribution box body.

[0098] The cover connection part 214 extends from one end of the fixing part 211, and is generally in a "U" shape. A pair of mounting holes are formed on the two extended ends. The protective cover 22 is connected to the cover connection part 214 through a rotating shaft, and a torsion spring is sleeved on the rotating shaft. The two ends of the torsion spring are respectively abutted against the inner side of the protective cover 22 and the outer end face of the second main body 21, so as to make the protective cover 22 flip towards the second main body 21. The protective cover 22 can at least cover the outer end of the second fitting part 212, so as to play a protective role when the second connector 20 is not in use.

[0099] Fig.12 It is a perspective view of the power transmission docking part in this embodiment.

[0100] As Fig.12 shown, the power transmission docking part 23 is used to dock with the power transmission needle 15, and includes a power transmission docking part limiting part 231, a power transmission docking part fitting part 232 and a power transmission docking part docking part 233 that are coaxially connected in sequence.

[0101] The power transmission docking part limiting part 231 is cylindrical, and its outer end has a connecting groove.

[0102] The power transmission docking part fitting part 232 includes a cylindrical section, a frustum section, a cylindrical section, and a frustum section that are coaxially connected in sequence, and its structure is similar to that of the needle fitting part 152.

[0103] The power transmission docking part docking part 233 is cylindrical, and has a docking groove 233a for the power transmission needle insertion part 153 of the power transmission needle 15 to insert. The bottom of the docking groove 233a is a conical surface, and the side wall is a cylindrical surface. In the free state (that is, when the first connector 10 is not inserted into the second connector 20), the outer diameter of the power transmission needle insertion part 153 is slightly larger than the diameter of the docking groove 233a (that is, the inner diameter of the power transmission docking part docking part 233); when the power transmission needle insertion part 153 is inserted into the docking groove 233a, the four supporting parts 1531 are squeezed and approach each other, and the restoring force of the supporting parts 1531 is used to make the power transmission needle insertion part 153 tighten in the docking groove 233a.

[0104] The power transmission docking part fitting part 232 is fitted in the corresponding power transmission docking part mounting hole 2122a and is clamped. The power transmission docking part limiting part 231 is exposed from one end face of the second main body 21 and abuts against the end face. The power transmission docking part docking part 233 is close to the other end face of the second main body 21 and does not exceed the end face.

[0105] Fig.13 It is a perspective view of the signal docking part in this embodiment.

[0106] As Fig.13As shown, the signal docking member 24 is used to dock the signal pin 16, and includes a signal docking member limiting portion 241, a signal docking member engaging portion 242 and a signal docking member docking portion 243 which are coaxially connected in sequence.

[0107] The signal docking member limiting portion 241 includes a cylindrical section and a semi-cylindrical section, and also forms a notch at the outer end.

[0108] The signal docking member engaging portion 242 includes a coaxially connected cylindrical section and a truncated cone section, with a step formed therebetween.

[0109] The signal docking part 243 is generally cylindrical in shape, and the outer end of the signal docking part 243 has two arc-shaped plate portions 2431. The extension direction of the arc-shaped plate portion 2431 is consistent with the axial direction of the signal docking part 24. Along its extension direction, the cross-section of the arc-shaped plate portion 2431 is semicircular. A long strip-shaped cutout 243a is formed between the two arc-shaped plate portions 2431. In a free state (i.e., when the signal pin 16 is not connected), the inner diameter of the cylinder formed by the two arc-shaped plate portions 2431 is slightly smaller than the outer diameter of the signal pin plug-in portion 163 of the signal pin 16. After the signal pin 16 is inserted, the two arc-shaped plate portions 2431 are stretched apart, and the end of the signal pin 16 can be clamped by utilizing the restoring force of the arc-shaped plate portion 2431.

[0110] The signal docking member engaging portion 242 is engaged in the corresponding docking member mounting hole 2123a and clamped, the signal docking member limiting portion 241 is exposed from one end surface of the second body 21 and abuts against the end surface, and the signal docking member docking portion 243 is close to the other end surface of the second body 21 and does not exceed the end surface.

[0111] The shape of the second sealing gasket 251 matches that of the fixing portion 211 , and is in the shape of a square sheet with rounded corners. The second sealing gasket 251 is installed between the fixing portion 211 and the box body of the power distribution cabinet 300 to seal the two.

[0112] Fig.14 Schematic diagram of the circuit structure of the power distribution cabinet in this embodiment.

[0113] like Fig.14 As shown, a plurality of relays 310, three transmission lines and two signal lines are arranged in the power distribution cabinet 300. The three transmission lines are drawn from the power grid, namely, a live line, a neutral line and a ground line. The two signal lines are respectively a positive signal line and a negative signal line. In this embodiment, 220V, 30A electric energy is provided through the three transmission lines.

[0114] Among them, one power transmission docking piece 23 of each second connector 20 is connected to the ground wire, and the other two power transmission docking pieces 23 are respectively connected to the live wire and the neutral wire through the relay 310; one signal docking piece 24 is connected to the positive signal wire, and the other signal docking piece 24 is connected to the negative signal wire through the relay 310. In this embodiment, the two signal wires are connected to a 12V signal power supply independent of the power grid.

[0115] In this embodiment, the first body 11, the first shell 12, the lock ring 13, the first cable fastener 14, the second body 21 and the protective cover 22 are all made of PA66. The first sealing ring 171, the first sealing pad 172, the first cable sealing ring 173 and the second sealing pad 251 are all made of rubber. The main parts of the power transmission needle 15, the signal needle 16, the power transmission docking piece 24 and the signal docking piece 25 are all made of pure copper with gold plating on the surface.

[0116] Based on the material and structure of the power connector 100 , its waterproof and dustproof level is IP68, its voltage resistance level is 1500V, its carrying current is 30A, its carrying current in a short time is 90A, its insulation resistance is greater than or equal to 100MΩ, its contact resistance is less than or equal to 10mΩ, and its current at a temperature rise of 18°C ​​is 34A.

[0117] When in use, the protective cover 22 of the second connector 20 is flipped upwards, and the guide clamping block 132 on the first connector 10 is aligned with the clamping groove 21211 on the second connector 20 according to the prompt of the marking component 135 on the first connector 10, and the first connector 10 is inserted toward the second connector 20, and the guide clamping block 132 on the first connector 10 is embedded in the clamping groove 21211 on the second connector 20, and moves along the clamping groove 21211 until it is embedded in its clamping groove section 21211c, so that the locking ring 13 and the second body 21 are clamped in the axial direction. At this time, the first embedding portion 111 and the second embedding portion 212 are embedded, and are clamped to each other through the first sealing ring 171, and the three power transmission needles 15 are respectively docked with the three power transmission docking pieces 23, and the two signal needles 16 are respectively docked with the two signal docking pieces 24, so that electric energy can be transmitted from the distribution cabinet 300 to the power-consuming equipment along the transmission cable 200.

[0118] Specifically, when the other end of the transmission cable 200 is connected to an electrical device, the two signal pins 15 of the first connector 10 are short-circuited. In this way, the two short-circuited signal pins 16, the two signal connectors 24, the corresponding two signal wire cores in the transmission cable 200, the two signal wires, and the corresponding relays form a signal loop. The 12V signal electricity is input into the relay, and the relay connects the corresponding two transmission lines (live wire and neutral wire), thereby supplying power to the electrical device. When the other end of the transmission cable 200 is not connected to an electrical device, or the second connector 20 is not plugged into the first connector 10, a complete signal loop is not formed, and the corresponding relay keeps the corresponding two transmission lines disconnected.

[0119] After the first connector 10 is pulled out, the protective cover 22 on the second connector 20 is automatically closed under the action of the torsion spring.

[0120] Example 1 Function and Effect

[0121] The power connector and power transmission system provided according to the present embodiment include a first connector arranged on a first power transmission and distribution device and a second connector arranged on a second power transmission and distribution device, wherein, since the first connector has a plurality of power transmission needles, the second connector has a corresponding number of power transmission docking pieces, and the end of the power transmission needle has at least two supporting parts, and the diameter of the end in a free state is larger than the inner diameter of the end of the power transmission docking piece, when the power transmission needle is docked with the power transmission docking piece to transmit electric energy, the at least two supporting parts can be closely embedded in the end of the power transmission docking piece, and the end of the power transmission needle is clamped in the end of the power transmission docking piece through the restoring force of the at least two supporting parts, so that even when the power-consuming equipment moves and pulls the first connector or the second connector, the docking between the two is not easy to loosen, thereby ensuring the safety of power use in mobile power use scenarios.

[0122] In the embodiment, the outer end of the first connector also has a first engaging portion, including an annular protrusion and multiple strip-shaped protrusions, and the outer end of the second connector also has a second engaging portion matching therewith, including an annular embedding groove and multiple strip-shaped embedding grooves, so that the first connector and the second connector can be firmly and stably joined, further ensuring that the docking of the two will not be loose when the electrical equipment moves. In addition, the multiple power transmission pins and signal pins are insulated and separated by the annular protrusion and multiple strip-shaped protrusions in the first connector, and the same is true for the second connector, so that short circuits of the power transmission pins, signal pins, etc. can be effectively avoided, further ensuring the safety of electricity use.

[0123] In the embodiment, among the three power transmission pins, since the protruding height of the grounding pin is greater than that of the two power pins, when the first connector is plugged into the second connector, the grounding pin will be connected before the two power pins, that is, before starting to transmit power, the electrical equipment will be grounded first, thereby ensuring the safety of the user when plugging the first connector and the second connector.

[0124] In the embodiment, a signal circuit is formed by two signal pins, two signal docking parts, two signal lines in a distribution cabinet, a relay, etc. Only when the signal pin is docked with the signal docking part and the other end of the transmission cable is connected to an electrical device, a complete signal circuit is formed and the relay connects the corresponding line to supply power. For connectors that are not docked and lines that are not connected to electrical devices, power is not supplied. While meeting the power needs of mobile equipment, it can effectively prevent users from getting electric shocks due to accidentally touching the conductive terminals of other lines, further improving the safety of electricity use.

[0125] Furthermore, since the protruding height of the two signal pins is much smaller than that of the power transmission pins, and the signal docking piece and the power transmission docking piece are in the same axial position, the first connector and the second connector must be docked in place before the corresponding circuit will be energized. This design can ensure that the two connectors are docked in place, further preventing loosening during use.

[0126] In the embodiment, since the inner side of the locking ring of the first joint has a guide clamping block and the outer side of the end of the second joint has a clamping groove matching it, when the user inserts the first joint axially into the second joint, the guide clamping block and the clamping groove can cooperate with each other to achieve self-locking, further ensuring that the joint is not easy to loosen during use, and the operation is very convenient and quick.

[0127] Furthermore, since a marking component is provided on the outer surface of the lock ring, the user can conveniently align and connect the first connector and the second connector according to the prompt of the marking component, and can also conveniently unlock the first connector and the second connector according to the prompt of the marking component after use, which is more convenient to operate. In addition, combined with the structure of the first engaging portion and the second engaging portion, the first connector and the second connector cannot be engaged when they are not aligned, ensuring that the power transmission needle and the power transmission docking piece will not be connected incorrectly, and it is safer to use.

[0128] In the embodiment, based on the structure and materials of the power connector, it has a very high withstand voltage level, a very high short-time carrying current, and a very high insulation resistance, so it is very safe to use at the construction site, and even if there are problems such as current fluctuations caused by problems with electrical equipment, the normal transmission and distribution of power can be guaranteed. In addition, based on the structure and materials of the power connector, it can also achieve IP68 level waterproof and dustproof, so even if there is rain or water accumulation at the construction site, it will not affect the normal operation of the power connector, making it more applicable.

[0129] <Example 2>

[0130] This embodiment provides a power connector and a power transmission system. In this embodiment, the same symbols are given to the same components as those in the first embodiment and the corresponding descriptions are omitted.

[0131] Fig.15 It is a three-dimensional diagram of the power connector in use in this embodiment.

[0132] like Fig.15 As shown, compared with the first embodiment, the difference is that the power connector 100' of this embodiment is used to electrically connect two power transmission cables 200, that is, the first power transmission and distribution device and the second power transmission and distribution device are both power transmission cables 200. In the power connector 100' of this embodiment, the structure of the first connector 10 is the same as that of the first embodiment, and the structure of the second connector 20' is different.

[0133] Fig.16 It is a structural exploded view of the second joint in this embodiment.

[0134] like Fig.16 As shown, the second connector 20 ′ of the present embodiment includes a second body 21 ′, a second shell 26 , a second cable fastener 27 , a second sealing pad 251 ′ and a second cable sealing ring 252 .

[0135] The second body 21 ′ includes a second engaging portion 212 , a second housing limiting portion 215 and a second housing connecting portion 216 which are coaxially connected in sequence.

[0136] The structure of the second engaging portion 212 is the same as that in the first embodiment.

[0137] The second housing limiting portion 215 is in a polygonal plate shape, and has a diameter greater than that of the second fitting portion 212 .

[0138] The structure of the second shell connecting portion 216 is the same as that of the first shell connecting portion 115 in the first embodiment.

[0139] The structures and functions of the second housing 26 , the second cable fastener 27 , the second sealing gasket 251 ′ and the second cable sealing ring 252 are respectively the same as those of the first housing 27 , the first cable fastener 14 , the first sealing gasket 172 and the first cable sealing ring 173 .

[0140] Similarly, one end of a power transmission cable 200 is inserted into the second housing 26 , and its three power transmission line cores are connected to three power transmission docking pieces 23 , and its two signal line cores are connected to two signal docking pieces 24 , respectively.

[0141] When in use, the first connector 10 and the second connector 20' are plugged into each other to electrically connect the two power transmission cables 200. The specific structures of the first connector 10 and the second connector 20' are basically consistent with those described in the first embodiment.

[0142] In this embodiment, other structures are the same as those in the first embodiment, and thus will not be described again.

[0143] By using the power connector 100 ′ of this embodiment, the power transmission cable between the power distribution cabinet 300 and the power-consuming equipment can be extended arbitrarily, so that the power can be reliably supplied to a longer distance.

[0144] In addition, the power connector 100 ′ of this embodiment can also be used in combination with the power connector 100 of the first embodiment.

[0145] <Example 3>

[0146] This embodiment provides a power connector and a power transmission system. In this embodiment, the same symbols are given to the same components as those in the first embodiment and the corresponding descriptions are omitted.

[0147] Fig.17 It is a three-dimensional diagram of the power connector in use in this embodiment.

[0148] like Fig.17 As shown, compared with the first embodiment, the difference is that the power connector 100" of this embodiment is used to connect the mobile distribution box 400 and the transmission cable 200, that is, the first power transmission and distribution device is the mobile distribution box 400, and the second power transmission and distribution device is the transmission cable 200.

[0149] In the power connector 100 ″ of this embodiment, the structure of the second connector 20 ′ is the same as that in the second embodiment, but the structure of the first connector 10 ′ is different.

[0150] Fig.18 It is a stereoscopic diagram of the first joint in this embodiment.

[0151] like Fig.18 As shown, compared with the first connector 10 of the first embodiment, the first connector 10' of this embodiment does not have the first cable fastener 14 and the first cable sealing ring 173, but has an electrical box mounting part 19, which is a hexagonal nut and can be mounted on the end of the first shell 12, so as to fix the first connector 10 on the mobile distribution box 400.

[0152] Fig.19 Schematic diagram of the circuit structure of the mobile distribution box in this embodiment.

[0153] like Fig.19 As shown, a plurality of relays 410, a power input head 420, three transmission lines and two signal lines are arranged in the mobile distribution box 400. The three transmission lines are respectively connected to the three transmission pins 15 of the first connector 10', so that electric energy can be supplied to the mobile distribution box 400 through the transmission cable 200 and the power connector 100", and a plurality of electrical devices can be respectively connected to the mobile distribution box 400.

[0154] In this embodiment, other structures are the same as those in the first embodiment, and thus will not be described again.

[0155] By means of the power connector 100 ″ of this embodiment, the power transmission cable 200 can be reliably connected to the mobile distribution box 400 , so that the power transmission system can be applied to situations where multiple power-consuming devices require remote power distribution and mobile power consumption.

[0156] In addition, the power connector 100 of this embodiment can also be used in combination with the power connectors in the first embodiment and / or the second embodiment.

[0157] <Example 4>

[0158] This embodiment provides a power connector and a power transmission system. In this embodiment, the same symbols are given to the same components as those in the third embodiment and the corresponding descriptions are omitted.

[0159] like Fig.18 As shown, compared with the first embodiment, the difference is that the power connector 100'' of this embodiment is used to connect the power transmission cable 200 and the mobile distribution box 400, that is, the first distribution device is the power transmission cable 200, and the second distribution device is the mobile distribution box 400.

[0160] The power connector 100 ″′ of this embodiment includes a first connector 10 and a second connector 20 , and the structures are respectively the same as the first connector 10 and the second connector 20 in the first embodiment, and the only difference is that the second connector 20 is installed on the mobile distribution box 400 .

[0161] like Fig.19 As shown, the connection method of the three-wire transmission line, the two signal lines, and the relay 410 and the second connector 20 in the mobile distribution box 400 is also the same as that in the first embodiment.

[0162] In this embodiment, other structures are the same as those in the first embodiment, and thus will not be described again.

[0163] By using the power connector 100''' of this embodiment, electric energy can be more reliably transmitted from the mobile distribution box 400 to multiple electrical devices.

[0164] In addition, the power connector 100''' of this embodiment can also be used in combination with the power connectors in embodiments 1 to 3.

[0165] <Example 5>

[0166] This embodiment provides a power transmission system.

[0167] Fig. 20 is a three-dimensional diagram of the power transmission system in this embodiment.

[0168] like Fig. 20 As shown, the power transmission system 1000 includes a distribution cabinet 300, multiple transmission cables 200, a mobile distribution box 400, a distribution cabinet power connector 101, a cable power connector 102, a distribution box input power connector 103, and a distribution box output power connector 104 (only the female power socket, i.e., the second connector 20, is shown).

[0169] The power distribution cabinet power connector 101 is also the power connector 100 in the first embodiment.

[0170] The cable power connector 102 is also the power connector 100 ′ of the second embodiment.

[0171] The distribution box input power connector 103 is also the power connector 100" of the third embodiment.

[0172] The distribution box output power connector 104 is also the power connector 100'' in the fourth embodiment.

[0173] Fig. 20 In the figure, a power transmission cable 200 is connected between the power distribution cabinet 300 and the mobile distribution box 400. In fact, multiple power transmission cables 200 can be connected between the two as needed, and the two power transmission cables 200 are connected via a cable power connector 102.

[0174] The power distribution cabinet 300 may also be connected to a plurality of mobile distribution boxes 400 through a plurality of power transmission cables 200 .

[0175] The distribution box output power connector 104 at the mobile distribution box 400 can be directly connected to the cable of the power-consuming device, or can be further connected to one or more power transmission cables 200 and then connected to the power-consuming device.

[0176] The mobile distribution box 400 may also be connected to one or more mobile distribution boxes 400 via a power transmission cable 200 .

[0177] According to the power transmission system 1000 of this embodiment, electric energy can be supplied to any distance from the power distribution cabinet 300, and electric energy can be reliably distributed to multiple power-consuming devices with mobile power needs. Moreover, the structure of the power transmission system 1000 can be flexibly adjusted as needed, and has a very wide range of applications.

[0178] The above embodiments are only used to illustrate the specific implementation of the utility model, and the utility model is not limited to the description scope of the above embodiments. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A power connector for electrically connecting a first power transmission and distribution device to a second power transmission and distribution device, characterized in that: include: A first connector provided on the first power transmission and distribution device; as well as a second connector provided on the second power transmission and distribution device, The first connector includes a first main body having a first engaging portion and at least two power transmission pins and at least two signal pins penetrating the first main body. The second connector includes a second body having a second engaging portion and a corresponding number of power transmission docking members and signal docking members arranged through the second body. The second engaging portion is used to cooperate with the first engaging portion to engage the outer end of the first body with the outer end of the second body. The end of the power transmission needle is cylindrical in shape, and has at least two supporting parts, with a gap between the at least two supporting parts. The end of the power transmission docking piece is tubular, and the at least two supporting parts are used to abut against the inner surface of the power transmission docking piece.

2. The power connector according to claim 1, characterized in that: in, The number of the signal pins and the signal docking parts are both two, which are used to cooperate with the two signal lines to form a closed detection signal loop. The two signal lines are connected to a signal power supply, and the signal power supply is a 5V~24V electrical signal independent of the power supply.

3. The power connector according to claim 1, characterized in that: in, The first engaging portion includes a cylindrical protrusion and a plurality of strip-shaped protrusions connected to the inner side of the cylindrical protrusion. The second engaging portion includes an annular groove matching the cylindrical protrusion and strip grooves matching each of the strip protrusions. The power transmission needle and the signal needle are respectively arranged between the cylindrical protrusion and the strip-shaped protrusion. The power transmission docking member and the signal docking member are respectively arranged between the annular groove and the strip groove.

4. The power connector according to claim 3, characterized in that: in, At least one engaging groove is provided on the outer peripheral surface of the second engaging portion. The outer end of the first body also has a cylindrical guide portion, which is arranged on the outer periphery of the first engaging portion. The inner side of the guide portion has at least one guide clamping block for cooperating with the at least one clamping groove to clamp the first body and the second body.

5. The power connector according to claim 4, characterized in that: in, The guide clamping block is in a triangular block shape, and one vertex thereof is close to the outer edge of the guide portion. The clamping groove comprises a guide groove section, a turning groove section and a clamping groove section which are connected in sequence. The guide groove section has an opening for the guide clamping block to enter, and a guide side wall for moving the guide clamping block toward the clamping section. The side wall of the clamping groove section is used to abut against the edge of the guide clamping block.

6. The power connector according to claim 1, Features: in, The first power transmission and distribution device and the second power transmission and distribution device are both power transmission cables, The first connector also includes: a first housing, in which one end of the power transmission cable is inserted; A first cable seal, disposed between the first housing and the power transmission cable, for sealing the two; and A first cable fastener is provided at one end of the first housing and is used to fix one end of the power transmission cable. The second connector also includes: a second housing, one end of the power transmission cable being inserted into the second housing; A second cable seal is disposed between the second housing and the power transmission cable to seal therebetween; and The second cable fastener is arranged at one end of the second shell and is used to fix one end of the power transmission cable.

7. The power connector according to claim 1, characterized in that: in, The first power transmission and distribution device is a distribution box, which has a live wire, a neutral wire, a ground wire, two signal wires and a relay, wherein the relay has two signal terminals. The first connector is arranged on the distribution box, The three power transmission pins include a ground pin and two power pins. The grounding pin is connected to the ground wire, and the two power pins are connected to the live wire and the neutral wire respectively through the relay. There are two signal pins, one of which is connected to one signal line, and the other signal pin is connected to one signal end of the relay, and the other signal end of the relay is connected to another signal line.

8. The power connector according to claim 1, characterized in that: in, The second power transmission and distribution device is a distribution box having a live wire, a neutral wire, a ground wire, two signal wires and a relay, wherein the relay has two signal terminals. The second connector is arranged on the distribution box. The second connector also includes a seat body arranged on the distribution box, and the second body is arranged through the seat body. The three power transmission connectors include a grounding connector and two power connectors. The grounding connection piece is connected to the ground wire, and the two power connection pieces are connected to the live wire and the neutral wire respectively through the relays. There are two signal docking parts, one of which is connected to one signal line, and the other signal docking part is connected to one signal end of the relay, and the other signal end of the relay is connected to another signal line.

9. The power connector according to claim 8, Features: Wherein, the second connector further comprises: A protective cover rotatably disposed on the base; and A reset driving member is disposed between the base body and the protective cover and is used to drive the protective cover to rotate toward the base body. When the protective cover is pressed against the base, the protective cover completely covers one end of the second body.

10. A power transmission system, characterized in that: include: At least two transmission and distribution units; as well as at least one power connector, used to electrically connect the two power transmission and distribution devices, Wherein, the power connector is the power connector described in any one of claims 1-8.

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