CN111555070B

CN111555070B - Heavy-current double-locking connector

Info

Publication number: CN111555070B
Application number: CN202010425488.8A
Authority: CN
Inventors: 蒋芳芳; 李圣强
Original assignee: Sichuan Huafeng Technology Co Ltd
Current assignee: Sichuan Huafeng Technology Co Ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2021-06-18
Anticipated expiration: 2040-05-19
Also published as: CN111555070A

Abstract

The invention discloses a high-current double-locking connector which comprises a socket shell, a socket mounting plate, an end cover and a lock cylinder, wherein a shaft hole is formed in the socket shell, a double-groove shaft is rotatably arranged in the shaft hole, the end cover is fixedly connected with the double-groove shaft, a mounting groove is formed in the socket shell, the lock cylinder for limiting the rotation of the double-groove shaft is arranged in the mounting groove, a tension spring is further arranged on the socket shell, the other end of the tension spring is connected with the end cover, the socket mounting plate is arranged in the socket shell, a jack assembly is arranged in the socket mounting plate, and the jack assembly is connected with a. The invention has the beneficial effects that: the connector has the self-locking and interlocking dual locking functions, can provide a reliable large-current transmission connection mode in a severe environment, particularly in severe vibration and impact environments, has the reliability which cannot be achieved by the traditional connector, and can be suitable for the fields of railways, power generation and distribution, new energy sources and the like.

Description

Heavy-current double-locking connector

Technical Field

The invention relates to a high-current connector, in particular to a high-current double-locking connector.

Background

With the rapid development of the industry, high-current connectors have become an indispensable part of modern electrical equipment, and the advancement of the high-current connectors in structural design and material use makes the connectors outstanding in electrical performance.

The durable and reliable high-current connector depends on a good connection mode and a locking mode, and the connection reliability of the high-current connector is tested in a severe vibration and impact environment.

The traditional high-current connector adopts a bayonet locking mode or a screw locking mode, and cannot cope with increasingly severe service environments. Bayonet locking connectors are limited to relatively small volume connectors and are not suitable for connectors requiring high voltage resistance and large insulation. The screw locking connector needs a large installation space, the insertion of the connector is not guided by the force of a locking mechanism, and for the connector with large current, the screw locking connector is difficult to insert and pull and difficult to insert. In addition, the traditional high-current connector has long instantaneous disconnection time and is easy to loosen under the severe vibration and impact environmental conditions, and the reliability and the stability of the connector are not guaranteed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a high-current double-locking connector which is suitable for the fields of railways, power generation and distribution, new energy and the like.

The purpose of the invention is realized by the following technical scheme: the utility model provides a two locking connector of heavy current, which comprises a socket shell, the socket mounting panel, end cover and lock core, the last shaft hole of having seted up of socket shell, the rotatable double flute axle of installing in the shaft hole, end cover and double flute axle fixed connection, the mounting groove has been seted up on the socket shell, install restriction double flute axle pivoted lock core in the mounting groove, still install the extension spring on the socket shell, the other end and the end cover of extension spring are connected, the socket mounting panel is installed in the socket shell, install the jack subassembly in the socket mounting panel, the jack subassembly is connected with a contact pin subassembly plug-in connection.

Preferably, the double-groove shaft is radially provided with an arc-shaped groove a and an arc-shaped groove b, and an included angle is formed between the arc-shaped groove a and the arc-shaped groove b.

Preferably, the lock core includes the lock post, and the key hole has been seted up at the top of lock post, and the bottom of lock post is provided with the rotary column, and the constant head tank has been seted up to the bottom of mounting groove, and the rotary column is rotatable to be installed in the constant head tank, still is provided with the boss that can block in arc recess an or the arc recess b on the lateral wall of lock post.

Preferably, install the flexure strip in the mounting groove, keep away from on the lock post and be provided with the locating plane that can laminate with the flexure strip on the lateral wall of adjacent boss.

Preferably, one side of the bottom of the mounting groove far away from the double-groove shaft is provided with four limiting columns, the limiting columns are distributed in a rectangular mode, and the elastic sheet is mounted between the four limiting columns.

Preferably, the socket shell is further provided with a cover plate for covering the mounting groove, and the cover plate is provided with a lock hole matched with the key hole.

Preferably, the socket shell is further provided with a rotating shaft, the rotating shaft is connected with a dust cover, the rotating shaft is sleeved with a torsion spring, and the dust cover is supported on the cover plate through the torsion force of the torsion spring.

Preferably, the end of the socket shell far away from the end cover is provided with a connecting plate, the connecting plate is provided with a hanging piece, and one end of the tension spring is connected with the hanging piece.

Preferably, the end cover is provided with a notch, connecting arms are formed on two sides of the notch, through holes connected with the double-groove shafts are formed in the connecting arms, and the connecting arms are respectively connected with two ends of the corresponding double-groove shafts and are fixed through pin shafts.

Preferably, the contact pin assembly comprises a plug mounting plate, a plug shell and contact pins, the plug mounting plate is connected with the plug shell, the contact pins are mounted in the plug mounting plate and are in plug-in fit with the jack assembly, and the head of each contact pin is provided with a protective cap.

Preferably, the protective cap is fixed on the head of the contact pin in a riveting mode.

Preferably, the protective cap is made of high-temperature and high-pressure resistant insulating materials.

Preferably, the tail of the contact pin is provided with a hexagonal step b, and the plug mounting plate is provided with a hexagonal limiting hole b matched with the hexagonal step b.

Preferably, the socket assembly is provided with a hexagonal step a, and the socket mounting plate is provided with a hexagonal limiting hole a matched with the hexagonal step a.

Preferably, the tail part of the jack component is provided with an elastic jack, and the plug is plugged with the elastic jack.

Preferably, a wire protecting sleeve and a sealing sleeve are installed in the plug shell, and the wire protecting sleeve is located between the sealing sleeve and the contact pin.

Preferably, the inner side wall of the end cover is provided with a lock catch, the plug shell is provided with an annular groove, and the lock catch is abutted to the annular groove under the action of the tension spring.

Preferably, the lock catch comprises a connecting block and a stop block, an acute angle is formed between the stop block and the connecting block, and the stop block abuts against the annular groove.

Preferably, the jack assembly is provided with a junction block, and the junction block is positioned on the outer side of the socket mounting plate.

The invention has the following advantages:

1. the high-current double-locking connector has the self-locking and interlocking double-locking functions, can provide a reliable high-current transmission connection mode in a severe environment, particularly in severe vibration and impact environments, has the reliability which cannot be achieved by the traditional connector, and can be applied to the fields of railways, power generation and distribution, new energy sources and the like.

2. The end cover is provided with a lock catch, and under the action of the tension spring, the lock catch arranged on the end cover tightly buckles the annular groove of the plug shell, so that the plug assembly has a back-off backstop function, the looseness of the plug assembly and the jack assembly is avoided, and the reliability of the insertion combination of the plug assembly and the jack assembly is ensured.

3. The head of the contact pin is provided with a protective cap which can effectively prevent the contact pin from generating flashover when being separated from the socket assembly;

4. the pin assembly and the socket assembly are both fixed in a hexagonal mode, the pin assembly and the socket assembly can be prevented from rotating, and further the stability of inserting and combining the pin assembly and the socket assembly is guaranteed.

Drawings

FIG. 1 is a schematic view of the structure of the present invention

FIG. 2 is a schematic structural diagram of the present invention

FIG. 3 is a schematic view of the structure of the pin assembly and the socket assembly after being plugged

FIG. 4 is a schematic view of the opened end cap

FIG. 5 is a schematic cross-sectional view of FIG. 4

FIG. 6 is an enlarged view of the point I in FIG. 5

FIG. 7 is a schematic view of the structure of the double grooved shaft of the present invention

FIG. 8 is an installation schematic view of a lock cylinder

FIG. 9 is a schematic view of the lock core

FIG. 10 is a schematic view of the latch

FIG. 11 is a schematic diagram of pin assembly and socket assembly mating

FIG. 12 is a cross-sectional view of a pin assembly

FIG. 13 is a schematic view of the structure of the plug housing

FIG. 14 is a schematic view of a receptacle assembly

FIG. 15 is a schematic view of a socket mounting plate

In the figure, 1-end cap, 2-lock catch, 3-double groove shaft, 4-seal ring, 5-cover plate, 6-lock core, 7-elastic sheet, 8-socket shell, 9-socket mounting plate, 10-jack component, 11-junction block, 12-fastening nut, 13-dust cap, 14-torsion spring, 15-rotating shaft, 16-hanging sheet, 17-tension spring, 18-plug mounting plate, 19-protective cap, 20-contact pin, 21-locking nut, 22-plug shell, 23-wire sheath, 24-seal sleeve, 26-connecting plate, 27-hexagonal step b, 28-connecting block, 29-stop block, 61-lock column, 62-key hole, 63-boss, 64-positioning plane, 65-rotary column, 67-mounting groove, 68-limit column, 31-arc groove a, 32-arc groove b, 33-hexagonal step a, 34-elastic jack, 35-hexagonal limit hole a, 36-annular groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that the products of the present invention conventionally lay out when in use, or orientations or positional relationships that are conventionally understood by those skilled in the art, which are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, 2 and 3, a large-current double-locking connector comprises a socket housing 8, a socket mounting plate 9, an end cover 1 and a lock cylinder 6, wherein a through hole is formed in the socket housing 8, ports are formed in two ends of the through hole, a shaft hole is formed in the outer side wall of the socket housing 8, a double-groove shaft 3 is rotatably mounted in the shaft hole, as shown in fig. 7, an arc-shaped groove a31 and an arc-shaped groove b32 are radially formed in the double-groove shaft 3, an included angle is formed between the arc-shaped groove a31 and the arc-shaped groove b32, the end cover 1 is fixedly connected with the double-groove shaft 3, a rotation angle of the end cover 1 relative to the socket housing 8 is determined through the arc-shaped groove a31 and the arc-shaped groove b32, and.

In this embodiment, as shown in fig. 4, 5 and 6, a mounting groove 67 is formed on the socket housing 8, a lock cylinder 6 for limiting the rotation of the dual-groove shaft 3 is mounted in the mounting groove 67, further, as shown in fig. 8 and 9, the lock cylinder 6 includes a lock cylinder 61, a key hole 62 is formed at the top of the lock cylinder 61, a rotation column 65 is disposed at the bottom of the lock cylinder 61, a positioning groove is formed at the bottom of the mounting groove 67, the rotation column 65 is rotatably mounted in the positioning groove, a boss 63 capable of being clamped into the arc-shaped groove a31 or the arc-shaped groove b32 is further disposed on the side wall of the lock cylinder 61, specifically, when the end cover 1 covers the port of the socket housing 8, the arc-shaped groove 63a 83 is opposite to the boss 63, a key is inserted into the key hole 62 and then the lock cylinder 61 is rotated, the lock cylinder 61 rotates in the mounting groove 67, the boss 63 also rotates with the lock cylinder 61, and when the boss, at this time, the double-groove shaft 3 cannot rotate, so that the end cover 1 always covers the port of the socket housing 8, when the end cover 1 needs to be opened, a key is inserted into the key hole 62, then the lock cylinder 61 is rotated, the boss 63 is separated from the arc-shaped groove a31, then an external force is applied to the end cover 1, so that the double-groove shaft 3 rotates, after the end cover 1 reaches a specified position, the arc-shaped groove b32 is opposite to the boss 63, then the lock cylinder 61 is rotated, so that the boss 63 is clamped into the arc-shaped groove b32, so that the position of the end cover 1 is fixed, and the port of the socket housing 8 is opened.

In this embodiment, as shown in fig. 8, an elastic sheet 7 is installed in the installation groove 67, a positioning plane 64 capable of being attached to the elastic sheet 7 is disposed on a side wall of the lock cylinder 61 far from and adjacent to the boss 63, preferably, a positioning plane 64 capable of being attached to the elastic sheet 7 is disposed on a side wall of the lock cylinder 63 far from and adjacent to the boss 63, after the positioning plane 64 is attached to the elastic sheet 7, the lock cylinder 61 is kept fixed without being affected by external force, so as to ensure the position of the end cap 1 is fixed, when the lock cylinder 61 is rotated, an edge angle between adjacent positioning planes 64 presses against the elastic sheet 7, so that the elastic sheet 7 is deformed, after the elastic sheet 7 is deformed, an elastic restoring force is generated, so that an operator has a force feeling, and after another positioning plane 64 is attached to the elastic sheet 7, the elastic sheet 7 is not deformed, and the elastic restoring force disappears, so that the force feeling of the operator disappears, the operator can sense the force and determine whether the lock cylinder 61 is rotated in place.

In this embodiment, as shown in fig. 8, four limiting columns 68 are arranged on one side of the bottom of the mounting groove 67, which is far away from the double-groove shaft 3, the limiting columns 68 are distributed in a rectangular shape, and the elastic sheet 7 is mounted between the four limiting columns 68, so that the elastic sheet 7 is convenient to mount, preferably, the elastic sheet 7 is composed of a plurality of elastic sheets, and when the elastic sheet is mounted, the elastic sheets are stacked between the four limiting columns 68.

In this embodiment, as shown in fig. 5, a cover plate 5 covering the mounting groove 67 is further installed on the socket housing 8, further, the socket housing 8 is provided with a plurality of screw holes, the cover plate 5 is locked on the socket housing 8 by screws, and the cover plate 5 covers the mounting groove 67, so as to protect the lock cylinder 6, further, in order to facilitate the insertion of the key, the cover plate 5 is provided with a locking hole matching with the key hole 62, and in order to facilitate the removal of the key, a gap is provided between the cover plate 5 and the lock cylinder 61, a protrusion on the key can rotate in the gap, and in order to increase the height of the gap, the locking hole of the cover plate 5 can protrude outward, so that after the boss 63 is clamped with the arc-shaped groove a31 or the arc-shaped groove b32, the key is lifted up, so that the key is separated from the key hole 62, and then the key can.

In this embodiment, as shown in fig. 1, fig. 2 and fig. 4, a rotating shaft 15 is further installed on the socket housing 8, a dust-proof cover 13 is connected to the rotating shaft 15, a torsion spring 14 is sleeved on the rotating shaft 15, the dust-proof cover 13 abuts against the cover plate 5 through the torsion force of the torsion spring 14, preferably, the torsion spring 14 is a double torsion spring 14, and an elastic arm of the double torsion spring 14 is installed on the dust-proof cover 13, so that the dust-proof cover 13 covers the lock hole all the time under the action of the torsion spring 14 without being affected by external force, thereby preventing sundries from entering the lock hole and affecting the normal use of the key.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, a tension spring 17 is further installed on the socket housing 8, the other end of the tension spring 17 is connected to the end cap 1, further, a connecting plate 26 is installed on one end of the socket housing 8 away from the end cap 1, the connecting plate 26 is a rectangular plate, through holes are opened on four corners, a hanging piece 16 is installed on the connecting plate 26, preferably, the hanging piece 16 is detachably connected to the connecting plate 26 through a screw, one end of the tension spring 17 is connected to the hanging piece 16, the tension spring 17 is in a stretched state for a long time, therefore, the tension spring 17 always applies a pulling force to the end cap 1, so that the end cap 1 has a tendency of moving towards the port of the socket housing 8, when the boss 63 is separated from the arc-shaped groove a31 or the graphic groove b, the end cap 1 covers the port of the socket housing 8 under the pulling force of the tension spring 17, thereby enabling the end cap 1 to seal the port of the jack housing 8.

In this embodiment, as shown in fig. 4, a notch is formed in the end cover 1, connecting arms are formed on two sides of the notch, through holes connected to the double-grooved shafts 3 are formed in the connecting arms, the connecting arms are respectively connected to two ends of the corresponding double-grooved shafts 3, and are fixed by pin shafts, when the end cover is installed, the double-grooved shafts 3 sequentially penetrate into the through holes of the corresponding connecting arms, and then the pin shafts are inserted, so that the end cover 1 is connected to the double-grooved shafts 3, and further, the axis of the pin shafts is perpendicular to the axis of the double-grooved shafts 3.

In the present embodiment, as shown in fig. 3, the socket mounting plate 9 is installed in the socket housing 8, the socket mounting plate 9 is installed with the socket assembly 10, the socket assembly 10 is connected with a pin assembly in an inserting manner, further, as shown in fig. 11 and 12, the pin assembly includes a plug mounting plate 18, a plug housing 22 and pins 20, the plug mounting plate 18 is connected with the plug housing 22, the pins 20 are installed in the plug mounting plate 18, the pins 20 are in inserting engagement with the socket assembly 10, and the heads of the pins 20 are installed with the protective caps 19, in the present embodiment, the protective caps 19 are fixed at the heads of the pins 20 by riveting, the protective caps 19 are made of high temperature and high pressure resistant insulating materials, the protective caps 19 can effectively prevent flashover when the pins 20 are separated from the socket assembly 10, further, the tails of the pins 20 are provided with hexagonal steps b27, the plug mounting plate 18 is provided with hexagonal limiting holes b matched with the hexagonal steps b27, through hexagonal step b27 and hexagonal spacing hole b to can avoid contact pin 20 to rotate, after hexagonal step b27 and the cooperation of hexagonal spacing hole b, through lock nut 21 locking, because lock nut 21 need go deep into the plug mounting panel 18 and screw up, so lock nut 21 is the slotted nut, and at lock nut 21 one side fluting, the screwing tool is put into lock nut 21 recess and is screwed up.

In the present embodiment, as shown in fig. 14, a hexagonal step a33 is disposed on the socket assembly 10, as shown in fig. 15, a hexagonal limiting hole a35 matched with the hexagonal step a33 is disposed on the socket mounting plate 9, and similarly, the socket assembly 10 can be prevented from rotating by the hexagonal step a33 and the hexagonal limiting hole a35, and further, an external thread is disposed on the socket assembly 10, after the hexagonal step a33 is matched with the hexagonal limiting hole a35, the external thread is located on the outer side of the socket mounting plate 9, and then the external thread is matched with the nut, after the nut is locked, the socket mounting plate 9 is connected with the socket assembly 10, and the socket assembly 10 is fixed, so as to prevent the socket assembly 10 from moving up and down.

In this embodiment, the contact pin 20 and the jack assembly 10 are made of copper alloy materials, the surface is plated with nickel, and the contact resistance is reduced, preferably, the contact pin 20 is a rigid contact member, the jack is an elastic contact member, the tail of the jack assembly 10 is set as an elastic jack 34, the plug is plugged into the elastic jack 34, the elastic jack 34 is a split slot type jack, the jack is closed after slot splitting, and then the elastic ring is installed at the slot splitting position of the jack, so as to prevent deformation after multiple plugging.

In this embodiment, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, a junction block 11 is installed on a jack assembly 10, the junction block 11 is located outside a socket mounting plate 9, preferably, the junction block 11 is fixed with the socket mounting plate 9, the jack assembly 10 is fixed with the junction block 11 by a fastening nut 12, in order to ensure stability of current transmission and reduce contact resistance, the jack assembly 10 is matched with the junction block 11 by a taper inclined plane, the junction block 11 is in an inclined T-shaped structure, a taper hole is formed at a position matched with a jack, a groove is formed in a horizontal direction, the groove is in a cross structure, after a cable is crimped on a terminal, the terminal is fixed in the groove of the junction block 11 by a screw, the groove in the cross structure better utilizes space to enlarge a mounting space of the terminal, and the cross groove enables the terminal to meet mounting requirements of.

In this embodiment, as shown in fig. 11 and 12, a wire protecting sleeve 23 and a sealing sleeve 24 are installed in the plug housing 22, the wire protecting sleeve 23 is located between the sealing sleeve 24 and the plug pin 20, the wire protecting sleeve 23 is used for fixing a cable, the sealing sleeve 24 is used for sealing the cable, and further, the tail of the plug pin 20 can be designed to be a press-fit tail hole or a welding tail hole according to the user requirement.

In this embodiment, as shown in fig. 5, the latch 2 is mounted on the inner side wall of the end cap 1, as shown in fig. 13, an annular groove 36 is formed on the plug housing 22, the latch 2 abuts against the annular groove 36 under the action of the tension spring 17, further, the latch 2 includes a connecting block 28 and a stopper 29, an acute angle is formed between the stopper 29 and the connecting block 28, the stopper 29 abuts against the annular groove 36, the annular groove 36 has an inclined surface, and the stopper 29 also has an inclined surface, so as to facilitate the engagement between the stopper 29 and the annular groove 36, when the stopper 29 abuts against the annular groove 36, the end cap 1 has a tendency to move towards the socket housing 8 under the action of the tension spring 17, thereby ensuring the reliability of the stopper 29 abutting against the annular groove 36, and the plug housing 22 is subjected to a pushing force, so that the plug housing 22 has a back-off stopping function, and prevents the plug pins 20 from being separated from the jack, thereby increasing the stability and reliability of the connector.

The working process of the invention is as follows:

the socket shell 8 is provided with the tension spring 17, so that no matter in an initial state of the pin assembly and the socket assembly 10 or in a plugging state of the pin assembly and the socket assembly 10, the tension spring 17 generates tension on the end cover 1, and in the initial state, the tension spring 17 generates tension on the end cover 1, and the end surface of the end cover 1 extrudes the sealing ring 4, so that the socket shell 8 has a protection effect, and at the moment, the end cover 1 can be directly opened through external force; when the pin assembly and the jack assembly 10 are inserted, the tension spring 17 generates tension force on the end cover 1, the lock catch 2 arranged on the end cover 1 tightly buckles the annular groove 36 of the plug housing 22, the tension spring 17 provides insertion holding force of the plug assembly and the jack assembly 10, so that the loosening of the plug assembly and the jack assembly 10 is avoided, particularly the loosening of the plug assembly and the jack assembly 10 under the action of cable gravity pulling can be prevented, so that the stability of insertion of the plug assembly and the jack assembly 10 is ensured, the connection of the tension spring 17 with the end cover 1 and the socket housing 8 forms a first re-locking mechanism of the embodiment, the end cover 1 can be opened under the action of external force at the moment, in order to prevent the end cover 1 from being opened under the non-exposure force, in the embodiment, a second re-locking mechanism is arranged, namely, when the socket is in an initial state, the end cover 1 covers the port of the socket housing 8 under the action of the tension, and is in a locking state, then the boss 63 of the lock core 6 enters the arc-shaped groove a31 of the double-groove shaft 3 through a key, at the moment, the end cover 1 is in a locking state and cannot be opened under the action of non-violence, then the key is taken out, the dust cover 13 is in a self-locking state under the action of the torsion spring 14 and can be opened by means of external force. When the pin assembly needs to be inserted into the plug assembly, the end cover 1 needs to be opened, and the step of opening the end cover 1 is as follows: the dust cover 13 is turned over, a key penetrates through the cover plate 5 and enters the key hole 62 of the lock cylinder 6, the key is twisted to drive the lock cylinder 6 to rotate, when a worker feels that the worker is not subjected to the elasticity of the elastic sheet 7, the fact that the boss 63 of the lock cylinder 6 leaves the arc-shaped groove a31 of the double-groove shaft 3 is indicated, in the actual operation process, preferably, the worker rotates 90 degrees to enable the boss 63 to leave the arc-shaped groove a31, and the double-groove shaft 3 and the end cover 1 are in a free state and can rotate. After the end cover 1 is opened and the pin assembly and the jack assembly 10 are inserted, the lock catch 2 is buckled on the annular groove 36 of the plug shell 22, then the lock core 6 is rotated by a key, the boss 63 of the lock core 6 enters the arc-shaped groove b32 of the double-groove shaft 3, the key is pulled out, the dust cover 13 is put down, at the moment, the end cover 1 is in a locked state, and under the condition that no key exists, the end cover 1 cannot be opened under the non-violent action. When the contact pin assembly and the plug assembly need to be separated, a key is inserted, the lock cylinder 6 is rotated, the boss 63 of the lock cylinder 6 is separated from the arc-shaped groove b32 of the double-groove shaft 3 to extract the plug, the end cover 1 is put down, the lock cylinder 6 is rotated again, the boss 63 of the lock cylinder 6 enters the arc-shaped groove a31 of the double-groove shaft 3, the key is extracted, the end cover 1 is locked, and the dust cover 13 is self-locked. The second locking mechanism can open or close the end cover 1 only by a key, and effectively prevents the end cover 1 from displacing under external force or vibration and impact, so that the connector is connected and falls off.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. A heavy current double-locking connector is characterized in that: the lock comprises a socket shell, a socket mounting plate, an end cover and a lock cylinder, wherein a shaft hole is formed in the socket shell, a double-groove shaft is rotatably arranged in the shaft hole, the end cover is fixedly connected with the double-groove shaft, a mounting groove is formed in the socket shell, the lock cylinder for limiting the rotation of the double-groove shaft is arranged in the mounting groove, a tension spring is further arranged on the socket shell, the other end of the tension spring is connected with the end cover, the socket mounting plate is arranged in the socket shell, a jack assembly is arranged in the socket mounting plate and is in plug-in connection with a pin assembly, the pin assembly comprises a plug mounting plate, a plug shell and a pin, the plug mounting plate is connected with the plug shell, the pin is arranged in the plug mounting plate, the pin is in plug-in fit with the jack assembly, and a lock catch is arranged on, an annular groove is formed in the plug shell, and the lock catch is abutted to the inside of the annular groove under the action of the tension spring.

2. A high current double locking connector as claimed in claim 1, wherein: arc recess an and arc recess b have radially been seted up on the double flute axle, arc recess an with have the contained angle between the arc recess b.

3. A high current double locking connector as claimed in claim 2, wherein: the lock core includes the lock post, the key hole has been seted up at the top of lock post, the bottom of lock post is provided with the rotary column, the constant head tank has been seted up to the bottom of mounting groove, the rotary column is rotatable to be installed in the constant head tank, still be provided with on the lateral wall of lock post and go into can the card arc recess an or boss in the arc recess b.

4. A high current double locking connector as claimed in claim 3, wherein: install the flexure strip in the mounting groove, keep away from on the lock post with adjacent be provided with on the lateral wall of boss can with the location plane of flexure strip laminating.

5. A high current double locking connector as claimed in claim 4, wherein: one side of keeping away from double flute axle in the bottom of mounting groove is provided with four spacing posts, just spacing post is the rectangle and distributes, the flexure strip is installed four between the spacing post.

6. A high current double locking connector as claimed in claim 5, wherein: the socket shell is further provided with a cover plate for covering the mounting groove, and the cover plate is provided with a lock hole matched with the key hole.

7. A high current double locking connector as claimed in claim 6, wherein: the socket is characterized in that a rotating shaft is further installed on the socket shell, a dustproof cover is connected to the rotating shaft, a torsion spring is sleeved on the rotating shaft, and the dustproof cover abuts against the cover plate through torsion of the torsion spring.

8. A high current double locking connector as claimed in claim 7, wherein: the socket is characterized in that a connecting plate is arranged at one end, far away from the end cover, of the socket shell, a hanging piece is installed on the connecting plate, and one end of the tension spring is connected with the hanging piece.

9. A high current double locking connector as claimed in claim 8, wherein: the end cover is provided with a notch, connecting arms are formed on two sides of the notch, through holes connected with the double-groove shafts are formed in the connecting arms, and the connecting arms are respectively connected with two ends of the corresponding double-groove shafts and are fixed through pin shafts.

10. A high current double-locking connector according to any one of claims 1 to 9, wherein: and a protective cap is arranged at the head of the contact pin.

11. A high current double locking connector as claimed in claim 10, wherein: the protective cap is fixed on the head of the contact pin in a riveting mode.

12. A high current double locking connector as claimed in claim 11, wherein: the protective cap is made of high-temperature and high-pressure resistant insulating materials.

13. A high current double locking connector as claimed in claim 10, wherein: the tail of the contact pin is provided with a hexagonal step b, and the plug mounting plate is provided with a hexagonal limiting hole b matched with the hexagonal step b.

14. A high current double locking connector as claimed in claim 10, wherein: the socket mounting plate is characterized in that a hexagonal step a is arranged on the socket assembly, and a hexagonal limiting hole a matched with the hexagonal step a is formed in the socket mounting plate.

15. A high current double locking connector as claimed in claim 14, wherein: the tail part of the jack component is provided with an elastic jack, and the plug is inserted into the elastic jack.

16. A high current double locking connector as claimed in claim 10, wherein: and a wire protecting sleeve and a sealing sleeve are installed in the plug shell, and the wire protecting sleeve is positioned between the sealing sleeve and the contact pin.

17. A high current double locking connector as claimed in claim 1, wherein: the lock catch comprises a connecting block and a stop block, an acute angle is formed between the stop block and the connecting block, and the stop block abuts against the inside of the annular groove.

18. A high current double locking connector as claimed in claim 10, wherein: the socket is characterized in that a junction block is arranged on the jack assembly and is positioned on the outer side of the socket mounting plate.