Anti-winding cable connector of low-voltage cable branch box
Technical Field
The invention relates to the technical field of cable interfaces, in particular to an anti-winding cable interface of a low-voltage cable branch box.
Background
The low-voltage cable branch box is a key device for tapping, switching and circuit switching of cable lines in a power distribution network, and is mostly applied to outdoor environments. When the cable led out from the low-voltage cable branch box is switched, an intermediate connector is required to be added into a long-distance cable line, so that the safety is improved and the cost of laying and purchasing the cable is reduced through the intermediate cable connector.
The cable connector is also called a cable joint, and after the cable is laid, in order to make the cable into a continuous line, the sections of the line must be connected as a whole, and must be connected at a connection point. In order to ensure that the requirements of multi-line laying are met, a multi-access cable connector is sometimes required.
However, this cable interface has the following drawbacks when used specifically:
1. When the existing cable interface is used for connecting the conductive cables, the plug of the conductive cable for transmitting power is required to be connected with the cable connector, so that the requirements of switching, tapping and circuit conversion in overlong power transmission operation are met. In order to meet the requirements of quick plugging and quick pulling, the traditional cable plug is generally connected with the cable connector in a rotatable threaded connector mode, stability and safety in a conductive connection state are guaranteed, and meanwhile, the cable plug is matched with a wire structure inside the cable connector to transmit current. However, when the current is transmitted to the inside of the cable connector for power transmission operation, the cable is required to be pulled and adjusted for many times because the subsequent safety detection is needed and other laying requirements are met, at the moment, the cable connector is easy to vibrate and impact, the mechanical strength born by the cable connector is high, the electrical performance stability is poor, the signal transmission loss is easy to increase and the electromagnetic interference is easy to receive, the electrical continuity and the mechanical stability are poor, and the service life is low;
2. When the existing cable interface is used for conducting connection to the laid cables, plugs of the laid cables are required to be inserted into the cable interface, and power transmission operation of a plurality of cables is achieved. However, when the cable is actually laid, the laid cable needs to meet the requirement of multi-circuit switching, the traditional cable interface is difficult to adjust according to the situation of the site, and the use is inconvenient . A
Disclosure of Invention
The invention aims to provide an anti-winding cable interface of a cable branch box, so as to solve the problems in the background technology.
In order to achieve the aim of the invention, the invention adopts the following technical scheme:
The invention provides an anti-winding cable interface of a low-voltage cable branch box, which comprises a tee cable interface shell, an external conductive component arranged at the inner top of the tee cable interface shell, a conductor arranged inside the tee cable interface shell and electrically connected with the external conductive component, and two assembly type conductive structures electrically connected with the conductor and arranged at the inner bottom of the tee cable interface shell, wherein the two assembly type conductive structures are arranged below the external conductive component,
The assembled conductive structure comprises an embedded conductive component arranged at the inner bottom of the tee cable interface shell, a split cable arranged in the embedded conductive component and electrically connected with an external plug, an insulating sleeve sleeved outside the split cable and arranged in the embedded conductive component, a plurality of abutting elastic sheets arranged at the center of the inside of the insulating sleeve, an assembled positioning component arranged at the top of the embedded conductive component, and a conductive middle module arranged in the assembled positioning component and respectively electrically connected with a conductor and the split cable,
The split cable is provided with a plurality of strands, and an external plug is electrically connected to the inside of the embedded conductive component.
As the preferable scheme of the invention, one side of the top of the three-way cable interface shell is connected with a thread sleeve head in a threaded manner, the other side of the top of the three-way cable interface shell is connected with an embedded tail sleeve in a threaded manner, the bottom of the three-way cable interface shell is connected with a thread inner sleeve in a threaded manner,
The internal thread of the threaded sleeve is connected with an external plug in a plugging manner, and the internal thread of the threaded sleeve is connected with the external plug in a threaded manner.
As a preferable scheme of the invention, the external conductive assembly comprises an upper embedded metal block arranged at the inner top of the tee joint cable interface shell, a conductor protecting sleeve arranged at the bottom of the upper embedded metal block and extending to the inner bottom of the tee joint cable interface shell, a conductive pole piece arranged at the inner wall of the upper embedded metal block, conductive sockets electrically connected at the front side and the rear side of the conductive pole piece, a power transmission module electrically connected between the two conductive sockets, a power distribution center electrically connected with the power transmission module and arranged at the center of the inner top of the tee joint cable interface shell, a power transmission plug electrically connected with the power transmission module and arranged in the screw sleeve head,
The power transmission plug is fixed with an external plug in a plugging manner.
As a preferable scheme of the invention, the inner side of the conductor protecting sleeve is provided with a conductor extending to the inner part of the upper embedded metal block in a penetrating way, the top of the conductor is connected with a clamping plug through a wire, the clamping plug is arranged in the middle electric socket and is electrically connected with the middle electric socket,
Wherein the middle electric socket is electrically connected to the center of the side face of the conductive pole piece.
As a preferable scheme of the invention, the bottom of the power transmission module at the bottom is electrically connected with a conductive safety protection module, the conductive safety protection module is arranged at the inner side of the embedded tail sleeve and is connected with a relay through a wire,
The conductive safety protection module is arranged on the side face of the conductive pole piece.
As a preferred scheme of the invention, the embedded conductive component comprises a bottom shell arranged at the inner bottom of the three-way cable interface shell, an upper connecting shell which is connected at the inner top of the bottom shell in a threaded manner and extends to the upper part of the bottom shell, a split conductive module arranged at the inner side of the bottom shell and extends to the inner part of the upper connecting shell, a split conductive head arranged at the inner center of the split conductive module, a conductive pin which is electrically connected with the split conductive head and extends to the inner bottom of the split conductive module, an inserting connection piece which is arranged at the inner bottom of the split conductive module and is positioned at the left and right sides of the conductive pin,
Wherein, the assembly locating component that extends to the outside is installed at the top of components of a whole that can function independently electrically conductive module.
As a preferable scheme of the invention, an insulating sleeve arranged in the split conductive module is arranged above the split conductive head, the insulating sleeve extends to the outer side of the split conductive module, and the top of the split conductive head is electrically connected with a split cable.
The assembly positioning assembly comprises a lower layer embedded block arranged at the top of the split conductive module, an upper embedded inlet arranged at the inner top of the lower layer embedded block and positioned at the outer side of the split cable, a middle embedded block arranged at the top of the lower layer embedded block through the upper embedded inlet, a protruding part arranged at the top of the middle embedded block and positioned at the outer side of the split cable, an upper layer embedded block arranged at the top of the middle embedded block through the protruding part, an outer protective cover arranged at the top of the upper layer embedded block and connected to the outer side of the top of the middle embedded block in a threaded manner, and a top sealing cover connected to the top of the outer protective cover in a threaded manner and extending to the outer side.
As a preferable scheme of the invention, the top of the upper embedded block is provided with a conductive middle module positioned on the inner side of the outer protective cover, the conductive middle module is arranged below the top sealing cover, and the inner part of the top sealing cover is provided with a conductor in a penetrating way. A
Compared with the prior art, the above technical scheme has the following beneficial effects:
through a plurality of assembled conductive structures that independently set up, can carry out respective conductive connection to every cable with cable interface conductive connection, reduce the cable when being connected with cable interface, take place winding probability.
1. In the anti-winding cable interface of the cable branch box, when the current for laying the cable is transmitted, the cable interfaces which can be arranged in a combined mode can be assembled in a combined mode according to the requirements of multi-strand split cables in an actual circuit, the laid cable is guaranteed to meet different requirements, and the applicability is strong. Meanwhile, when the current on the cable is conveyed in the cable interface, the current which is transmitted in a concentrated mode is split and transmitted through the design of a plurality of split cables, the electric field intensity of the surface during current transmission is dispersed, ionization phenomenon under high pressure and energy loss in the discharging process are reduced, and the current transmission efficiency is effectively improved. In addition, each split cable can be extruded and fixed (in the longitudinal direction) through the insulating sleeve arranged outside the split cable and the abutting elastic sheet arranged inside the insulating sleeve, so that the probability of shaking and shifting of the split cable caused by external interference when current is transmitted in the split cable is reduced, the electrical continuity, the mechanical stability and the service life are improved to the maximum extent, and
2. In the anti-winding cable interface of the low-voltage cable branch box, when the split cable transmits the current in the split cable, the split cable penetrating through the inner side is assembled and positioned through the design of a plurality of embedded blocks (a lower embedded block, a middle embedded block and an upper embedded block), so that the probability of shaking the split cable during power transmission is reduced. On the other hand, the plurality of embedded blocks (the lower embedded block, the middle embedded block and the upper embedded block) can apply pressure to the metal elastic sheet downwards, and the middle part of the metal elastic sheet protrudes inwards to squeeze the split cable part on the inner side of the metal elastic sheet, and longitudinal pressure is applied to the middle of the split cable, so that the safety and stability of the split cable in current transmission are ensured;
3. In the anti-winding cable interface of the low-voltage cable branch box, by means of the design of arranging two conductive pole pieces connected with the conductors, the path length of current in transmission on the conductive pole pieces can be enlarged, the strength of the current transmitted by the conductive pole pieces and the transmission area in current transmission are further improved, the stability and the transmission capacity in current transmission are improved, and the conductivity of the cable interface in current transmission is improved. Meanwhile, when multiple strands of combined currents are combined and transmitted, the transmitted voltage intensity can be detected in real time through the design of the distribution center and the conductive safety protection module, and the safety in the current transmission process is ensured;
4. In the anti-winding cable interface of the cable branch box, when the plug part of the cable is inserted into the cable interface and is electrically connected with the conductive pins, the stability and the firmness of the cable plug and the cable interface during connection assembly can be further ensured by fixing the conductive metal protruding rod part of the cable connector (socket) in an extrusion mode (through the elastically arranged inner connecting piece), and the conductivity stability of the cable plug and the cable interface after connection are ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
Furthermore, the terms "install," "set," "provided," "connected," and "sleeved" are to be construed broadly. For example, they may be fixedly connected, detachably connected, or of unitary construction, they may be mechanically or electrically connected, they may be directly connected, or they may be indirectly connected through intermediaries, or they may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the overall cross-section of the present invention;
FIG. 3 is a schematic view of the overall front cross-section of the present invention;
FIG. 4 is a schematic diagram of the assembled external conductive assembly of the present invention in cross-section;
FIG. 5 is an enlarged schematic view of the structure of the area A of FIG. 4 according to the present invention;
FIG. 6 is an exploded view of the present invention after the junction of the three-way cable interface housing and conductor shield;
FIG. 7 is a schematic diagram of the connection cross-section of the three-way cable interface housing and the external conductive assembly of the present invention;
FIG. 8 is a schematic diagram of the structure of the invention with the external conductive assembly and the electrical conductors connected in cross section;
FIG. 9 is a schematic diagram of the assembled conductive structure and external conductive assembly of the present invention in cross-section;
FIG. 10 is an exploded view of the assembled conductive structure of the present invention in cross-section;
FIG. 11 is a schematic cross-sectional view of an assembled conductive structure of the present invention;
FIG. 12 is an exploded view of the present invention after the connection housing and the assembly positioning assembly are connected in section;
FIG. 13 is a schematic view of the connection between the insulating sleeve and the interference spring;
in the figure:
10. A three-way cable interface housing; 101, a thread sleeve head, 102, an embedded tail sleeve, 103, a thread inner sleeve;
20. Externally connected conductive components, 201, upper embedded metal blocks, 202, conductor protective sleeves, 203, conductive pole pieces, 204, conductive sockets, 205, power transmission modules, 2051, conductive safety protection modules, 206, distribution hubs, 207 and power transmission plugs;
30. an electric conductor; 301, a clamping plug 302, an intermediate electric socket;
40. the cable comprises an assembled conductive structure, an embedded conductive component, a split cable, a 403, an insulating sleeve, a 404, an abutting spring piece, a 405, an assembled positioning component, a 406 and a conductive middle module, wherein the assembly conductive structure is formed by the split cable, the embedded conductive component and the insulating sleeve;
4011. A bottom housing 4012, an upper connection housing 4013, a split conductive module 4014, a split conductive header 4015, conductive pins 4016, and an interposer;
4051. Lower embedded block, 4052, upper embedded inlet, 4053, middle embedded block, 4054, protruding part, 4055, upper embedded block, 4056, outer protective cover, 4057, top sealing cover;
50. metal spring plate, 501, pressing down the convex head.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
Example 1
Referring to fig. 1-13, a low voltage cable branch box anti-winding cable interface includes a three-way cable interface housing 10, an external conductive component 20 disposed at the inner top of the three-way cable interface housing 10, a conductive body 30 disposed inside the three-way cable interface housing 10 and electrically connected with the external conductive component 20, a fitting type conductive structure 40 electrically connected with the conductive body 30 and mounted at the inner bottom of the three-way cable interface housing 10, the fitting type conductive structure 40 being provided with two, two fitting type conductive structures 40 being disposed below the external conductive component 20, the fitting type conductive structure 40 including an embedded conductive component 401 mounted at the inner bottom of the three-way cable interface housing 10, a split cable 402 mounted inside the embedded conductive component 401 and electrically connected with an external plug, an insulating sleeve 403 sleeved outside the split cable 402 and mounted inside the embedded conductive component 401, a plurality of interference pieces 404 disposed at the inner center of the insulating sleeve 403, a fitting type positioning component 405 mounted inside the fitting type conductive component 401 and electrically connected with the conductive body 30 and the split cable 402, respectively, wherein the conductive body module is provided with an external plug 401.
In the present invention, the external conductive members 20 of the two cable interfaces may be connected by connectors.
The above working principle is that when the cable of the cable branch box is laid and electrically connected, the plug of the laid cable can be inserted into the bottom of the three-way cable interface housing 10 through the movable swivel of the threaded connection, and electrically connected with the embedded conductive component 401 inside the three-way cable interface housing 10, so that the transmitted current can be transmitted to the inside of the embedded conductive component 401, and the split cable 402 electrically connected with the embedded conductive component 401 is transmitted to the inside of the conductive intermediate module 406. Then, the current transmitted to the inside of the conductive middle module 406 is transmitted to the inside of the conductive body 30, and is electrically connected with another cable through the external conductive component 20 electrically connected with the conductive body 30, so as to realize the operation of switching and tapping the current. The split cables 402 for transmitting current can split and transmit the transmitted current, so that the load of the current on each split cable 402 is reduced, and the service life of the split cable 402 is prolonged. The split cable 402 for current transmission can be longitudinally extruded and fixed through the abutting elastic sheet 404 at the inner side of the insulating sleeve 403, so that the probability of shaking or shifting of the cable interface when the cable interface vibrates or is impacted is reduced, and the electrical continuity, mechanical stability and service life of the cable interface are improved.
It should be noted that, the plurality of abutting elastic pieces 404 are disposed at the center of the inside of the insulating sleeve 403 at equal intervals, a gap is left between two adjacent abutting elastic pieces 404, and the middle portion of the inside of the insulating sleeve 403 is disposed in a tapered shape with an inward recess.
Referring specifically to fig. 6 and 7, a threaded sleeve 101 is screwed on one side of the top of the three-way cable interface housing 10, an embedded tail sleeve 102 is screwed on the other side of the top of the three-way cable interface housing 10, a threaded inner sleeve 103 is screwed on the bottom of the three-way cable interface housing 10, an external plug is fixedly inserted into the threaded sleeve 101, and an external plug is screwed into the threaded inner sleeve 103.
In the anti-winding cable interface of the low-voltage cable branch box, a cable plug in threaded connection with the cable plug can be screwed into the three-way cable interface shell 10 through the design of the threaded sleeve head 101 and is electrically connected with the external conductive component 20 to realize current transmission, and the cable plug in threaded connection with the cable plug can be screwed into the three-way cable interface shell 10 through the design of the threaded inner sleeve 103 and is electrically connected with the embedded conductive component 401 to realize current transmission.
Referring specifically to fig. 6 and 7, the external conductive assembly 20 includes an upper embedded metal block 201 mounted on the inner top of the three-way cable interface housing 10, a conductive shield 202 mounted on the bottom of the upper embedded metal block 201 and extending to the inner bottom of the three-way cable interface housing 10, a conductive pole piece 203 mounted at the inner wall of the upper embedded metal block 201, conductive sockets 204 electrically connected to the front and rear sides of the conductive pole piece 203, a power transmission module 205 electrically connected between the two conductive sockets 204, a distribution hub 206 electrically connected to the power transmission module 205 and mounted at the center of the inner top of the three-way cable interface housing 10, and a power transmission plug 207 electrically connected to the power transmission module 205 and mounted inside the screw-threaded nipple 101, wherein the external plug is inserted and fixed inside the power transmission plug 207.
In this scheme, the inside of conductor lag 202 runs through and is provided with the conductor 30 that extends to the inside of upper embedded metal piece 201, and the top of conductor 30 is connected with joint plug 301 through the wire, and joint plug 301 installs in the inside of middle electric socket 302, and is connected with middle electric socket 302 electricity, and wherein middle electric socket 302 electricity is connected in the center department of conducting strip 203 side.
In the anti-winding cable interface of the low-voltage cable branch box, when current is transmitted, the transmitted current is transmitted to the clamping plug 301 through the conductor 30, and is transmitted to the inside of the conductive pole piece 203 through the intermediate electric socket 302 which is clamped and electrically connected with the clamping plug 301. The current transmitted to the conductive pole piece 203 is then transmitted to the conductive socket 204, and is transmitted to the power transmission plug 207 through the power transmission module 205 electrically connected to the conductive socket 204, and the current is transmitted to another cable electrically connected to the power transmission plug 207. The design of the distribution center 206 can integrate the currents of the multiple split cables in centralized transmission, so as to ensure the safety in the current transmission process.
Referring specifically to fig. 6 and 7, the bottom of the power transmission module 205 located at the bottom is electrically connected with a conductive safety protection module 2051, the conductive safety protection module 2051 is installed at the inner side of the embedded tail sleeve 102, and the conductive safety protection module 2051 is connected with the relay through a wire, wherein the conductive safety protection module 2051 is disposed at the side surface of the conductive pole piece 203.
In the anti-winding cable interface of the low-voltage cable branch box, the conductive safety protection module 2051 is arranged at the bottom of the three-way cable interface shell 10 of the cable interface at the tail, so that the voltage intensity of the whole current transmission can be detected in real time, and the safety and stability in the current transmission process are ensured. Meanwhile, the conductive safety protection module 2051 is connected with the power transmission module 205 in a plugging manner, when a plurality of cable interfaces are required to be combined, the conductive safety protection module 2051 in the head cable interface can be disassembled, and the power transmission module 205 is connected with the power transmission module 205 in the other cable interface through a connector.
Referring specifically to fig. 6 and 7, embedded conductive assembly 401 includes a bottom housing 4011 mounted at the bottom within three-way cable interface housing 10, an upper connection housing 4012 threaded on top within bottom housing 4011 and extending above bottom housing 4011, a split conductive module 4013 mounted inside bottom housing 4011 and extending into upper connection housing 4012, a split conductive header 4014 mounted at the center within split conductive module 4013, conductive pins 4015 electrically connected to split conductive header 4014 and extending to the bottom within split conductive module 4013, and interposer tabs 4016 mounted at the bottom within split conductive module 4013 and located on the left and right sides of conductive pins 4015, wherein assembly positioning assembly 405 extending to the outside is mounted on top of split conductive module 4013.
In this scheme, an insulating sleeve 403 installed inside a split conductive module 4013 is provided above a split conductive head 4014, the insulating sleeve 403 extends to the outside of the split conductive module 4013, and a split cable 402 is electrically connected to the top of the split conductive head 4014.
In the anti-winding cable interface of the low-voltage cable branch box, when current is transmitted to the cable plug in threaded connection, the current on the cable is transmitted to the conductive pin 4015 in conductive connection with the cable plug, and is transmitted to the inside of the split conductive head 4014 through the conductive pin 4015. Then, the split conductor head 4014 transmits the current to the split cables 402 electrically connected to the split conductor head, and the split cables 402 transmit the current to the conductive intermediate module 406, thereby realizing the current transmission operation with high safety.
In the invention, the design of the inner insertion sheet 4016 can squeeze the metal rod part of the socket inserted into the inner bottom of the split conductive module 4013, so that the safety and the firmness of the cable plug and the cable interface during the current transmission operation are further improved.
Referring specifically to fig. 6 and 7, the assembly positioning assembly 405 includes a lower insert 4051 mounted on top of the split conductive module 4013, an upper insert 4052 provided on top of the inside of the lower insert 4051 and located outside of the split cable 402, a middle insert 4053 mounted on top of the lower insert 4051 through the upper insert 4052, a boss 4054 mounted on top of the middle insert 4053 and located outside of the split cable 402, an upper insert 4055 mounted on top of the middle insert 4053 through the boss 4054, an outer shield 4056 mounted on top of the upper insert 4055 and threaded on top of the middle insert 4053, and a top sealing cap 4057 threaded on top of the outer shield 4056 and extending to the outside.
In this scheme, a conductive middle module 406 located inside the outer shield 4056 is mounted on top of the upper embedded block 4055, the conductive middle module 406 is disposed below the top sealing cover 4057, and the conductor 30 is disposed inside the top sealing cover 4057 in a penetrating manner.
In the anti-winding cable interface of the low-voltage cable branch box, the lower embedded block 4051, the middle embedded block 4053 and the upper embedded block 4055 which are arranged in a stacked manner can conduct guiding limiting and vertical extrusion positioning on the plurality of split cables 402 penetrating through the inner part of the low-voltage cable branch box, so that the problems that the plurality of split cables 402 and the insulating sleeve 403 are not easy to shake due to external interference and the like are solved, and the conductive performance in a current transmission state is guaranteed. Meanwhile, the limiting extrusion of the position of the conductive middle module 406 can also ensure that the conductive performance of the conductive middle module 406 is not affected by external interference when the current is transmitted to the inside of the conductive middle module 406.
Example two
Referring to fig. 5 and 12 specifically, a metal spring 50 is installed at the inner top of the split conductive module 4013 and located at the outer portion of the split cable 402, the metal spring 50 is abutted against the outer side of the split cable 402, the top of the metal spring 50 is abutted against a pressing protruding head 501, the pressing protruding head 501 is installed at the bottom of the lower layer embedded block 4051 and located at the outer side of the split cable 402, and a plurality of metal springs 50 are provided.
In the anti-winding cable connector of the low-voltage cable branch box, through the design of the metal elastic pieces 50 at the left side and the right side of the split cable 402, when the split cable 402 is assembled, the metal elastic pieces 50 which are in contact with the pressing convex heads 501 are pressed by the action force of pressing the pressing convex heads 501 at the upper layer, so that the inner central part of the metal elastic pieces 50 is sunken inwards to form inwards protruding parts, the split cable 402 at the inner side of the metal elastic pieces 50 is pressed, the split cable 402 in a current transmission state is elastically pressed and limited, the probability of shaking or shifting of the split cable 402 in the current transmission state is further reduced, and the electrical continuity, the mechanical stability and the service life of current transmission are improved.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present invention, and are not intended to limit the invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
The terms "center," "longitudinal," "transverse," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used for descriptive simplicity and convenience only and not as an indication or implying that the apparatus or element being referred to must have a particular orientation, be constructed and operated for a particular orientation, based on the orientation or positional relationship illustrated in the drawings, and thus should not be construed as limiting the scope of the present invention.
It should be understood that the present invention is not limited to the above embodiments, and any person skilled in the art, who is within the scope of the present invention, can apply to the present invention.