CN116130983B - Grounding device for shielding wire of electrical equipment - Google Patents
Grounding device for shielding wire of electrical equipment Download PDFInfo
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- CN116130983B CN116130983B CN202310376717.5A CN202310376717A CN116130983B CN 116130983 B CN116130983 B CN 116130983B CN 202310376717 A CN202310376717 A CN 202310376717A CN 116130983 B CN116130983 B CN 116130983B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/44—Means for preventing access to live contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/533—Bases, cases made for use in extreme conditions, e.g. high temperature, radiation, vibration, corrosive environment, pressure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
- H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding
- H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
- H01R13/6591—Specific features or arrangements of connection of shield to conductive members
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Abstract
The invention discloses a grounding device for a shielding wire of electrical equipment, which comprises an electrical wire, an electrical inserting terminal and a grounding terminal, wherein an inner protective cover, the shielding wire and an outer protective cover are sequentially arranged outside the electrical wire from inside to outside; by arranging the insulating protection block, after the electric wire is connected, the electric terminal, the grounding port, the electric port and other parts are completely protected in the insulating protection block and the electric equipment, so that the exposed damage is avoided; the integrated combined control mechanism is arranged, so that the electric equipment is powered on after the shielding wire is grounded, and the shielding wire is disconnected and grounded after the electric wire is powered off, thereby preventing electromagnetic wave interference.
Description
Technical Field
The invention belongs to the technical field of conductive connection, and particularly relates to a grounding device for a shielding wire of electrical equipment.
Background
With the trend of digitalization and miniaturization of electronic and communication equipment, the resistance to external electromagnetic waves is reduced, so in order to protect various electronic and communication equipment from electromagnetic interference or prevent interference of peripheral equipment according to electromagnetic waves generated by electromagnetic wave generating sources, a shielding device must be provided on the inside and outside of electronic and communication equipment or on a lead wire to solve the problem of human body harmfulness of electromagnetic waves.
Through searching data and retrieving, the prior art has the following similar shielding wire grounding device, and the first prior art is: as shown in fig. 1, the electric wire comprises an electric wire (a), an inner protective skin (b), a shielding wire (c) and an outer protective skin (d), wherein the inner protective skin (b), the shielding wire (c) and the outer protective skin (d) are wrapped outside the electric wire, the electric wire (a) and the shielding wire (c) are exposed at one end, an inserting terminal (e) is connected with the exposed end of the electric wire (a) so as to be connected with an inserting port (f) on an electric device (k), and the exposed end of the shielding wire (a) is connected with a grounding terminal (g) so as to be connected with a grounding port (h) on the electric device (k).
And the second prior art is as follows: the grounding device for the shielding wire of the electrical equipment, which is shown in the Chinese patent publication No. CN107579360B, comprises an electrical wire, an inner sheath, a shielding wire and an outer sheath, wherein the inner sheath, the shielding wire and the outer sheath are wrapped outside the electrical wire, and the electrical wire and the shielding wire are exposed at one end; an insulating member entirely covering the exposed portion of the electric wire; a ground terminal that covers the shield wire and the insulating member, is electrically connected to the shield wire, and is grounded to a housing of an electrical device; and an electrical plug terminal connected to one end of the electrical wire, and a portion of the electrical plug terminal is covered with the insulating member.
However, the shielding wire grounding device in the prior art has the following defects: 1. the grounding terminal and the plug-in terminal are completely separated (first prior art) or partially separated (second prior art), so that the plug-in terminal and the grounding terminal cannot be plugged in and pulled out at the same time, the situation that only the plug-in terminal is communicated and conductive, but the grounding terminal is not grounded, and the shielding is invalid is caused; 2. the grounding terminal and the plug-in terminal are completely separated (first prior art) or partially separated (second prior art), and when in operation, the situation that the plug-in terminal is connected first and then the grounding terminal is connected or the grounding terminal is disconnected first and then the plug-in terminal is disconnected easily occurs, so that the electrical equipment is electrified, but the shielding wire is still in an ungrounded interval state, and even if the interval time is short, certain electromagnetic interference is still generated; 3. the plug-in port is arranged in the equipment shell (second prior art), and when the plug-in port is connected or detached, the equipment shell is required to be detached, so that the equipment shell is very troublesome and inconvenient; 4. in a normal use state, the grounding terminal is directly exposed outside the equipment shell, so that the equipment is easy to damage; 5. when the ground terminal is not plugged into the ground port on the electrical equipment, the ground terminal is still conductive with the shielded wire, and if the ground terminal is connected with the power supply by mistake, the shielded wire (the shielded wire is generally a weak current wire) is easily damaged by overload current.
Disclosure of Invention
In view of the shortcomings and drawbacks of the prior art, an object of the present invention is to provide an electrical equipment shielded wire grounding apparatus, which solves the problems of the prior art such as the following: 1. the grounding terminal and the plug-in terminal are completely separated (first prior art) or partially separated (second prior art), so that the plug-in terminal and the grounding terminal cannot be plugged in and pulled out at the same time, the situation that only the plug-in terminal is communicated and conductive, but the grounding terminal is not grounded, and the shielding is invalid is caused; 2. the grounding terminal and the plug-in terminal are completely separated (first prior art) or partially separated (second prior art), and when in operation, the situation that the plug-in terminal is connected first and then the grounding terminal is connected or the grounding terminal is disconnected first and then the plug-in terminal is disconnected easily occurs, so that the electrical equipment is electrified, but the shielding wire is still in an ungrounded interval state, and even if the interval time is short, the problem of certain electromagnetic interference is still caused; 3. the plug-in port is arranged in the equipment shell (second prior art), and when the plug-in port is connected or detached, the equipment shell is required to be detached, so that the equipment shell is very troublesome and inconvenient; 4. in a normal use state, the grounding terminal is directly exposed outside the equipment shell, so that the equipment is easy to damage; 5. when the ground terminal is not plugged into the ground port on the electrical equipment, the ground terminal is still conductive with the shielded wire, and if the ground terminal is connected with the power supply by mistake, the shielded wire (the shielded wire is generally a weak current wire) is easily damaged by overload current.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an electrical equipment shielded wire earthing device, connects on electrical equipment, includes electrical wire, inserts electric terminal and earthing terminal, and the electrical wire outside establishes inlayer sheath, shielded wire and outer sheath in proper order from inside to outside, electrical equipment on establish with insert electric terminal complex plug-in port and with earthing terminal complex earthing port, inlayer sheath tip make electrical wire tip part expose apart from the electrical wire certain distance, insert electric terminal one end through the cladding of moulding plastics at the electrical wire, the outside insulating sheath of outer sheath is fixed with electrical wire tip exposure part, and insert electric terminal other end and expose insulating sheath and plug-in port cooperation, be equipped with the annular opening that the round makes the shielded wire naked on the outer sheath in the insulating sheath, the upper portion outside of outer sheath set up horizontal channel and both ends that communicate with each other with the outside with the horizontal channel and annular opening respectively in the insulating sheath, earthing terminal through be in horizontal channel and the vertical channel comprehensive connection control mechanism break-make with expose at annular opening department and insert electric terminal, and insert electric terminal with the electric wire and with the electric terminal after the electric wire is cut-off or with the electric terminal is connected to the electric wire, and the electric terminal is cut off at the electric wire is cut-off after the electric wire is cut-off to the electric wire is connected to the electric terminal with the electric wire to the electric terminal is cut off, and is connected to the electric wire with the electric terminal after the electric wire is cut off.
As a further improvement of the invention, the electric equipment is provided with a socket, and the insulating protection block is provided with a plug matched with the socket.
As a further improvement of the invention, the integrated combined control mechanism comprises a horizontal rod made of conductive materials and a vertical rod made of conductive materials and slidingly connected with the horizontal channel, one end of the horizontal rod is connected with a grounding terminal, two fixing blocks are arranged on the circumference surface of the other end of the horizontal rod, the fixing blocks are connected with the right side wall of the horizontal channel through a first spring made of insulating materials, the right side end surface of the horizontal rod and the upper end wall surface of the vertical rod are provided with matched inclined planes which incline from top to bottom to left, and the lower end of the vertical rod is connected with a conductive pressing sheet which can be pressed on a shielding wire through a second spring made of conductive materials; and in the natural state of the first spring and the second spring, the inclined planes of the horizontal rod and the vertical rod are at the same height but are not contacted, and when the insulating protection block is inserted, the horizontal distance between the electric inserting terminal and the electric inserting port is larger than the sum of the horizontal distance between the grounding terminal and the grounding socket and the horizontal distance between the horizontal rod and the inclined plane of the end part of the vertical rod.
As a further improvement of the invention, the electric equipment is provided with a groove matched with the insulating protection block, and the electric plug port and the grounding port are arranged in the groove.
As a further improvement of the invention, the first spring and the second spring are compression springs, and the maximum elastic deformation of the first spring is larger than the horizontal distance between the horizontal rod and the end inclined surface of the vertical rod.
As a further improvement of the invention, the conductive pressing sheet is arc-shaped matched with the shielding wire.
As a further improvement of the invention, the bottom of the annular opening is provided with a second sheath which does not interfere with the conductive pressing sheet.
As a further improvement of the invention, the upper side and the lower side of the horizontal rod are respectively provided with a horizontal sliding block, the upper side and the lower side of the horizontal channel are respectively provided with a horizontal sliding groove in sliding fit with the horizontal sliding blocks, and the horizontal sliding blocks can be embedded in the horizontal sliding grooves in a sliding manner along the horizontal sliding grooves.
As a further improvement of the invention, the left side and the right side of the vertical rod are respectively provided with a vertical sliding block, the upper side and the lower side of the vertical channel are respectively provided with a vertical sliding groove in sliding fit with the vertical sliding blocks, and the vertical sliding blocks can be embedded in the vertical sliding grooves in a sliding manner along the vertical sliding grooves.
As a further improvement of the invention, the front side and the rear side of the horizontal channel are respectively provided with a fixed chute which avoids interference with the fixed block.
Compared with the prior art, the invention has the following advantages:
1. the electric wire is conveniently partially exposed by keeping the end part of the inner-layer sheath at a certain distance from the end part of the electric wire so as to conveniently fix the electric terminal, the insulating sheath is completely injection-molded to cover the outer-layer sheath, after the electric wire is connected (namely, after the electric terminal is inserted into the electric port), the electric terminal, the grounding port, the electric port and other parts are completely protected in the insulating sheath and the electric equipment, so that the exposure is avoided, the insulating sheath is arranged, firstly, the safety is improved, the safety accident is reduced, secondly, the abrasion damage caused by the exposure of the electric terminal and the grounding terminal in the prior art is reduced or avoided, and thirdly, the electric wire and the electric terminal can be fixedly connected; fourthly, the plug-in terminal and the connection terminal are connected to form a whole, so that the plug-in terminal and the connection terminal are plugged in and pulled out simultaneously; the situation that the grounding terminal is forgotten to be plugged in is avoided;
an annular opening is formed in the outer protective skin in the insulating protective block, so that the shielding wire part is exposed to be connected with the grounding terminal in a conducting manner;
in addition, the horizontal channel and the vertical channel are formed on the outer side of the outer layer sheath in the insulating protection block, the grounding terminal can be connected or disconnected with the shielding wire exposed at the annular opening through the comprehensive linkage mechanism in the horizontal channel and the vertical channel, and when the electric terminal is inserted to electrify the electric wire or pulled out to cut off the power of the electric wire, the comprehensive linkage mechanism enables the shielding wire to be grounded before the electric wire is connected and disconnected after the electric wire is powered off, and the grounding terminal and the shielding wire are automatically disconnected after the electric terminal is pulled out, namely the comprehensive linkage mechanism can enable the shielding wire of the electric equipment to be electrified after the electric wire is grounded, and the shielding wire is disconnected and grounded after the electric wire is powered off, namely in the normal electrifying process of the electric equipment, or in the state of electrifying the electric wire or in the instant action of pulling out the electric terminal, the shielding wire is completely grounded, so that the shielding effect of the shielding wire on the electric wire is greatly ensured, and electromagnetic wave interference is prevented;
in addition, another function of the integrated joint control is that after the plug-in terminal and the grounding terminal are pulled out, the grounding terminal and the shielding wire are automatically disconnected, namely, after the electrical wire and the electrified equipment are completely disconnected (for example, before the electrical equipment leaves a factory or in transportation, or before the electrical equipment is not connected with the electrical equipment for installation and debugging, or when the electrical wire and the electrical equipment are disconnected in need of transferring or overhauling), the insulating protection block is separated from the electrical equipment, at the moment, the grounding terminal and the shielding wire are automatically disconnected, at the moment, if the grounding terminal is erroneously connected with a power supply, no current passes because the grounding terminal and the shielding wire are disconnected, so that the phenomenon that the shielding wire (the shielding wire is generally a weak electrical wire) is damaged due to current passing when the grounding terminal is erroneously plugged in the power supply can be avoided.
2. Through set up the socket on electrical equipment, be equipped with on insulating protection piece with socket matched with plug to when electrical equipment prepares the circular telegram, directly insert insulating protection piece on electrical equipment, can accomplish simultaneously and insert electric terminal and earthing terminal's insertion, make it form a whole, avoid earthing terminal and insert electric terminal mutually independent, and separate the trouble that causes or forget to insert the problem of inserting the earthing terminal, in addition, set up socket and plug, can make insulating protection piece can be more firm fix on electrical equipment, thereby increase the firm in connection of inserting electric terminal and earthing terminal and electrical equipment.
3. The integrated combined control mechanism is provided with a horizontal rod which is in sliding connection with the horizontal channel and a vertical rod which is in sliding connection with the vertical channel, and the right side end surface of the horizontal rod is connected with the right side wall of the horizontal channel through a first spring made of an insulating material, the right side end surface of the horizontal rod is provided with a matched inclined surface with the upper end wall surface of the vertical rod, the lower end of the vertical rod is provided with a conductive pressing sheet which can be pressed on the shielding wire through a second spring made of a conductive material, and in the natural state of the first spring and the second spring, the inclined surfaces of the horizontal rod and the vertical rod are at the same height but are not contacted, so that in the non-inserted insulating protection state, the middle of the horizontal rod and the vertical rod is disconnected, a grounding terminal connected with the horizontal rod cannot be conducted with the shielding wire, and even if the grounding terminal is inserted in a power supply or is communicated with the power supply, a conductive loop cannot be formed, and no current passes through, and the phenomenon that the shielding wire is damaged because of error or other factors are caused by the current is avoided, and the shielding wire is normally broken when the grounding terminal is inserted on the shielding wire, and the shielding wire is in the power supply is in the fault state;
in addition, when the insulating protection block is inserted, the horizontal distance between the electric inserting terminal and the electric inserting port is larger than the sum of the horizontal distance between the grounding terminal and the grounding socket and the horizontal distance between the horizontal rod and the end inclined plane of the vertical rod; when the insulating protection block is inserted, before the electric inserting terminal is not contacted with the electric inserting port, the grounding terminal is contacted with the grounding port firstly, and the first spring is compressed and compressed along with the integral movement of the insulating protection block, the grounding terminal and the horizontal rod start to move rightwards, then the inclined plane of the horizontal rod is propped against the inclined plane of the vertical rod, at the moment, the horizontal rod and the vertical rod are conducted, namely, the grounding terminal and the shielding wire are conducted, the shielding wire completes the grounding action, then the vertical rod continues to move rightwards along with the insertion of the insulating protection block, the vertical rod is pressed by the horizontal rod, the second spring is compressed, the vertical rod moves downwards, and after the vertical rod moves downwards to a certain extent, the electric inserting terminal is inserted into the electric inserting port, so that the electric wire is conducted, and the electric equipment is electrified; thereby realizing that the ground is firstly grounded and then the power is electrified;
conversely, when the insulating protection block is required to be powered off and pulled out, the insulating protection block is pulled to move rightwards, in the process, the plug-in terminal is pulled out of the plug-in port firstly, so that the power off of the electrical equipment is realized, at the moment, the originally compressed first spring and second spring start to reset gradually, the grounding terminal is still contacted and conducted with the grounding port under the leftward thrust, namely, the shielding wire is still in a grounding state until the inclined planes of the horizontal rod and the vertical rod are separated and disconnected after the first spring and the second spring are completely reset, and the shielding wire is disconnected and grounded; thereby realizing the disconnection after power failure and grounding;
in addition, above-mentioned setting, after inserting insulating protection piece completely, because the elasticity of first spring and second spring resets also energy storage performance for ground terminal firmly presses on the ground connection port, and conductive pressing piece firmly presses on the shielded wire, and the inclined plane of horizon bar firmly presses on the inclined plane of perpendicular pole, thereby firmly will connect electric port and shielded wire to link together, avoid the not hard up of each part interface department, guarantee the ground connection performance of shielded wire, in addition, the shielded wire is pressed and is pressed on the inner skin, can avoid the shielded wire perk, guarantees the shielding effect of shielded wire.
In addition, the second spring is arranged, firstly serves as an energy storage component for storing energy in the compression process and secondly serves as a conductor and is connected between the conductive pressing piece and the vertical rod for conducting;
in a word, the integrated control mechanism is arranged into the structure of the skillfully connected horizontal rod, the vertical rod, the first spring, the second spring and the conductive pressing sheet, the integrated control mechanism is simple in structure, low in cost, convenient to manufacture and ingenious in connection relation conception, and can realize control of multiple functional states, such as the control of the electric equipment that is grounded firstly, then is electrified, powered off firstly, then is disconnected and grounded, and after the electric wire is completely pulled down, the exposed grounding terminal is not communicated with the shielding wire, and the grounding port and the shielding wire can be firmly connected together in the electrified state, so that loosening of interfaces of all parts is avoided, and the integrated control mechanism is multipurpose and ingenious in conception.
4. Through be equipped with one on electrical equipment with insulating protect piece assorted recess, insert electric port, ground connection port setting in the recess, when inserting insulating protect piece, directly with insulating protect piece and recess alignment, then insert can, the accurate location of insulating protect piece of being convenient for inserts, avoid insulating protect piece slope or skew to cause insert electric terminal and insert electric port can't align or ground terminal and ground connection port can't align the problem of not inserting well to avoid because insulating protect piece skew to cause each function state not well realize the problem.
5. Through guaranteeing that the biggest elastic deformation volume of first spring is greater than the horizontal distance between the tip inclined plane of horizon bar and vertical pole to when first spring pressurized, can make the removal displacement of horizon bar can be greater than the horizontal distance between the tip inclined plane of horizon bar and vertical pole, thereby make the horizon bar can contact and promote vertical pole, make horizon bar and vertical pole can switch on.
6. By setting the conductive pad to be arc-shaped and matching with the shielding wire, the conductive pad is in good contact with the shielding wire.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic view of the overall structure of the present invention (the plug terminals and ground terminals are not connected to the electrical device);
fig. 3 is a cross-sectional view of the present invention (the plug terminals and ground terminals are not connected to the electrical device);
FIG. 4 is an enlarged view of FIG. 3 at A;
fig. 5 is a cross-sectional view II of the present invention (the plug terminal and the ground terminal are connected to an electrical device);
FIG. 6 is an enlarged view of FIG. 5 at B;
FIG. 7 is a cross-sectional view of C-C of FIG. 6;
FIG. 8 is a D-D sectional view of FIG. 6;
fig. 9 is an enlarged view of fig. 8 at E;
in the figure: 1. an electrical device; 2. an electric wire; 3. inserting an electric terminal; 4. a ground terminal; 5. an inner layer skin protection; 6. a shield wire; 7. an outer skin; 8. an insulating protection block; 9. a plug-in port; 10. a ground port; 11. an annular opening; 12. a horizontal channel; 13. a vertical channel; 14. a socket; 15. a plug; 16. a horizontal bar; 17. a vertical rod; 18. a first spring; 19. an inclined plane; 20. a second spring; 21. conducting tabletting; 22. a fixed block; 23. a horizontal slider; 24. a horizontal chute; 25. a vertical slider; 26. a vertical chute; 27. a fixed chute; 28. a groove.
Detailed Description
The invention is described in further detail below with reference to fig. 2-9. For the sake of clarity, only the structures related to the invention are shown in the drawings.
For convenience of description, the coordinate system is defined as shown in fig. 2, and the left-right direction is a transverse direction, the front-rear direction is a longitudinal direction, and the up-down direction is a vertical direction.
The embodiment of the invention discloses a grounding device for a shielding wire of electrical equipment. Referring to fig. 2, the electrical equipment shielding wire grounding device is connected to the electrical equipment, and specifically comprises an electrical wire 2, an electrical insertion terminal 3 and a grounding terminal 4, as shown in fig. 3 and 5, an inner-layer sheath 5, a shielding wire 6 and an outer-layer sheath 7 are sequentially arranged outside the electrical wire 2 from inside to outside, an electrical insertion port 9 matched with the electrical insertion terminal 3 and a grounding port 10 matched with the grounding terminal 4 are arranged on the electrical equipment 1, when the electrical equipment is arranged, the grounding port 10 is slightly larger than the grounding terminal 4, a certain distance from the end part of the inner-layer sheath 5 to the electrical wire 2 is used for exposing the end part of the electrical wire 2 so as to conveniently fix the electrical insertion terminal 3, one end of the electrical insertion terminal 3 is fixed with the exposed part of the electrical wire 2 through an insulating protection block 8 coated outside the outer-layer sheath 7, and the other end of the electrical insertion terminal 3 is exposed out of the insulating protection block 8 to be matched with the electrical insertion port 9, and as shown in fig. 4 and 6, an annular opening 11 is arranged on the outer-layer sheath 7 in the insulating protection block 8 so as to facilitate the connection of the exposed annular opening 11 of the shielding wire 6 with the grounding terminal 4.
The insulating protection block 8 is internally provided with a horizontal channel 12 with the left side communicated with the outside and a vertical channel 13 with the two ends respectively communicated with the horizontal channel 12 and the annular opening 11 at the outer side of the upper part of the outer protection cover 7, the grounding terminal 4 is communicated with or disconnected from the shielding wire 6 exposed at the annular opening 11 through a comprehensive linkage control mechanism positioned in the horizontal channel 12 and the vertical channel 13, and when the electric terminal 3 is inserted to electrify the electric wire 2 or the electric terminal 3 is pulled out to cut off the electric wire 2, the comprehensive linkage control mechanism enables the shielding wire 6 to be grounded before the electric wire 2 is communicated and disconnected from the ground after the electric wire 2 is disconnected, and the grounding terminal 4 and the shielding wire 6 are automatically disconnected after the electric terminal 3 and the electric terminal are pulled out.
In addition, the socket 14 is arranged on the electrical equipment 1, the plug 15 matched with the socket 14 is arranged on the insulating protection block 8, so that when the electrical equipment 1 is ready to be electrified, the insulating protection block 8 is directly inserted into the electrical equipment 1, and the insertion of the electric terminal 3 and the grounding terminal 4 can be completed simultaneously, so that the grounding terminal 4 and the electric terminal 3 are mutually independent, the problem that the grounding terminal 4 is inconvenient to insert or forgets to insert the grounding terminal 4 due to separate insertion is avoided, and in addition, the socket 14 and the plug 15 are arranged, so that the insulating protection block 8 can be more firmly fixed on the electrical equipment 1, and the connection firmness between the electric terminal 3 and the grounding terminal 4 and the electrical equipment 1 is improved;
in addition, in order to avoid the inclination of the insulating protection block 8 when the insulating protection block 8 is inserted, a groove 28 matched with the insulating protection block 8 is arranged on the electric equipment 1, and the electric insertion port 9 and the grounding port 10 are arranged in the groove 28; when the insulating protection block 8 is inserted, the insulating protection block 8 is directly aligned with the groove 28, and then the insulating protection block 8 is inserted, so that the accurate positioning insertion of the insulating protection block 8 is facilitated, the problem that the electric terminals 3 and the electric ports 9 cannot be aligned or the ground terminals 4 and the ground ports 10 cannot be aligned and inserted poorly due to the inclination or the deflection of the insulating protection block 8 is avoided, and the problem that various functional states are not well realized due to the deflection of the insulating protection block 8 is avoided.
In summary, the above-mentioned insulating protection block 8 is arranged, which is completely injection-molded to cover the outer protection skin 7, after the electric wire 2 is connected (i.e. after the electric terminal 3 is inserted into the electric port 9), the electric terminal 3, the ground terminal 4, the ground port 10, the electric port 9 and other components are completely protected in the insulating protection block 8 and the electric equipment 1, so as to avoid exposure, and the insulating protection block 8 is arranged, firstly, to improve the safety, reduce the safety accident, secondly, to reduce or avoid the abrasion damage caused by the exposure of the electric terminal 3 and the ground terminal 4 in the prior art, and thirdly, to fixedly connect the electric wire 2 and the electric terminal 3; fourthly, the plug-in terminal 3 and the connection terminal are connected to form a whole, so that the plug-in terminal 3 and the connection terminal are plugged in and pulled out simultaneously;
the horizontal channel 12, the vertical channel 13 and the integrated control mechanism are arranged, the integrated control mechanism can enable the electric equipment 1 to be electrified after the shielding wire 6 is grounded, and the shielding wire 6 is disconnected after the electric wire 2 is powered off, namely, the shielding wire 6 can be completely in a grounded state under the electrified state of the electric wire 2 no matter in the normal electrified use process of the electric equipment 1 or in the transient action of inserting the plug-in terminal 3 to electrify or extracting the plug-in terminal 3 to cut off the power, thereby greatly ensuring the shielding effect of the shielding wire 6 on the electric wire 2 and preventing electromagnetic wave interference;
in addition, another function of the integrated control is to enable the ground terminal 4 and the shielding wire 6 to be automatically disconnected after the plug-in terminal 3 and the ground terminal are pulled out, namely, after the electrical wire 2 and the electrified device are completely disconnected (for example, before the electrical device 1 leaves a factory or in transportation, or before the electrical device 1 is not connected to the power, is installed and debugged, or when the electrical wire 2 and the electrical device 1 need to be disconnected after being transferred or overhauled), the insulating protection block 8 is separated from the electrical device 1, and at the moment, the ground terminal 4 and the shielding wire 6 are automatically disconnected, at the moment, if the ground terminal 4 is connected with the power supply by mistake, because the ground terminal 4 and the shielding wire 6 are disconnected, no current passes, and therefore the phenomenon that the shielding wire 6 (the shielding wire 6 is a weak electrical wire in general) is overloaded by current when the ground terminal 4 is inserted on the power supply by mistake can be avoided, and the shielding wire 6 is damaged can be avoided.
The integrated combined control mechanism is realized through the following structure: as shown in fig. 4, 6, 7, 8 and 9, the integrated control mechanism includes a horizontal rod 16 made of conductive material and slidingly connected with the horizontal channel 12, and a vertical rod 17 made of conductive material and slidingly connected with the vertical channel 13, and the sliding connection manner of the horizontal rod 16 and the horizontal channel 12 is as follows: as shown in fig. 4 or fig. 6, a horizontal sliding block 23 is respectively arranged at the upper side and the lower side of the horizontal rod 16, a horizontal sliding groove 24 in sliding fit with the horizontal sliding block 23 is respectively arranged at the upper side and the lower side of the horizontal channel 12, and the horizontal sliding block 23 can be embedded in the horizontal sliding groove 24 in a sliding manner along the horizontal sliding groove 24. The sliding connection mode of the vertical rod 17 and the vertical channel 13 is as follows: the left side and the right side of the vertical rod 17 are respectively provided with a vertical sliding block 25, the upper side and the lower side of the vertical channel 13 are respectively provided with a vertical sliding groove 26 which is in sliding fit with the vertical sliding blocks 25, and the vertical sliding blocks 25 can be embedded in the vertical sliding grooves 26 in a sliding way along the vertical sliding grooves 26.
As shown in fig. 9, when the horizontal rod 16 is installed, one end of the horizontal rod is connected with the ground terminal 4, two fixing blocks 22 are arranged on the front side and the rear side of the circumference of the other end, the fixing blocks 22 are connected with the right side wall of the horizontal channel 12 through a first spring 18 made of insulating materials, and fixing sliding grooves 27 for avoiding interference with the fixing blocks 22 are respectively arranged on the front side and the rear side of the horizontal channel 12.
As shown in fig. 4 or fig. 6, the right end surface of the horizontal rod 16 and the upper end surface of the vertical rod 17 are provided with matched inclined surfaces 19 inclined from top to bottom to left, the lower end of the vertical rod 17 is connected with a conductive pressing piece 21 capable of pressing on the shielding wire 6 through a second spring 20 made of conductive materials, and in order to make good contact between the conductive pressing piece 21 and the shielding wire 6, the conductive pressing piece 21 is in an arc shape matched with the shielding wire 6 as shown in fig. 7. Of course, in order to reduce the area of the annular opening 11 and reduce the exposure of the shielding wire 6, a second protecting cover which does not interfere with the conductive pressing piece 21 is arranged at the bottom of the annular opening 11.
When the integrated combined control mechanism is arranged, the horizontal rod 16 and the inclined plane 19 of the vertical rod 17 are at the same height but are not contacted in the natural state of the first spring 18 and the second spring 20, and when the insulating protection block 8 is inserted, the horizontal distance between the electric inserting terminal 3 and the electric inserting port 9 is larger than the sum of the horizontal distance between the grounding terminal 4 and the grounding socket 14 and the horizontal distance between the horizontal rod 16 and the inclined plane 19 of the end part of the vertical rod 17.
The above mentioned first spring 18 and second spring 20 are both compression springs, the first spring 18 should avoid interfering with the vertical rod 17, and the maximum elastic deformation of the first spring 18 is greater than the horizontal distance between the horizontal rod 16 and the end inclined surface 19 of the vertical rod 17, so that when the first spring 18 is pressed, the movement displacement of the horizontal rod 16 can be greater than the horizontal distance between the horizontal rod 16 and the end inclined surface 19 of the vertical rod 17, so that the horizontal rod 16 can contact and push the vertical rod 17, and the horizontal rod 16 and the vertical rod 17 can be conducted. In addition, the second spring 20 is provided, firstly as an energy storage component for storing energy in the compression process and secondly as a conductor connected between the conductive pressing piece 21 and the vertical rod 17 for conducting.
The implementation process of the invention when the electrical equipment 1 is powered on is as follows: the insulating protection block 8 and the groove 28 are aligned, the insulating protection block 8 is inserted into the groove 28, in the process, namely, when the insulating protection block 8 is inserted, before the electric terminal 3 is not contacted with the electric port 9, the grounding terminal 4 is firstly contacted with the grounding port 10, and as the insulating protection block 8 is integrally moved and inserted, the first spring 18 is compressed by compression, the grounding terminal 4 and the horizontal rod 16 start to move rightwards, then the inclined surface 19 of the horizontal rod 16 is propped against the inclined surface 19 of the vertical rod 17, at the moment, the horizontal rod 16 is conducted with the vertical rod 17, namely, the grounding terminal 4 is conducted with the shielding wire 6, the grounding action is completed, then the horizontal rod 16 continues to move rightwards, the vertical rod 17 is pressed by the horizontal rod 16, the second spring 20 is compressed, the vertical rod 17 moves downwards, after the vertical rod 17 moves downwards to a certain extent, the electric terminal 3 is inserted into the electric port 9, the electric wire 2 is conducted, and the electric equipment 1 is electrified; thereby realizing the first grounding and then powering on.
On the contrary, the implementation process of the invention when the electrical equipment 1 is powered off is as follows: when the power is required to be cut off, the insulating protection block 8 is pulled out to move rightwards, in the process, the plug-in port 9 is pulled out firstly by the plug-in terminal 3, so that the power cut-off of the electrical equipment 1 is realized, at the moment, the originally compressed first spring 18 and the originally compressed second spring 20 start to reset gradually, the grounding terminal 4 is subjected to the thrust to the left, and is still in contact conduction with the grounding port 10, namely, the shielding wire 6 is still in a grounding state, until the inclined surfaces 19 of the horizontal rod 16 and the vertical rod 17 are separated and disconnected after the first spring 18 and the second spring 20 are completely reset, and the shielding wire 6 is disconnected and grounded; thus realizing the disconnection-before-disconnection grounding after power failure.
The invention has the following overall effects: 1. the insulation protection block 8, the plug terminal 3 and the grounding terminal 4 are matched, so that the plug terminal 3 and the grounding terminal 4 are plugged and pulled simultaneously, and the shielding failure risk caused by the fact that the plug terminal 3 and the grounding terminal 4 are plugged and pulled separately and the ground terminal 4 is forgotten to be plugged and plugged is avoided; and under the normal use state of plugging in, the ground terminal 4 is hidden inside electrical equipment 1 and insulating protection piece 8, avoids the direct naked problem that leads to the fact easy damage that sets up in the equipment shell outside of ground terminal 4.
2. Through setting up insulating protection piece 8, inserting electric terminal 3, earthing terminal 4 and the cooperation setting of synthesizing allies oneself with accuse mechanism for electrical equipment 1 is first ground and is later circular telegram, cuts off the ground connection after cutting off the power supply earlier, makes electrical equipment 1 as long as in the circular telegram state, has the shielding of shielded wire 6, avoids there being electrical equipment 1 to switch on, but the interval state that shielded wire 6 still did not ground, even interval time is shorter, still causes the production of certain electromagnetic interference.
The plug-in port 9 is arranged outside the equipment, the plug-in terminal 3 is directly plugged in the equipment, the plug-in of the plug-in terminal 3 is convenient, the problem that the plug-in port 9 is arranged inside the equipment shell and the plug-in terminal 3 is inconvenient to connect in the prior art is avoided, or the grounding terminal 4 is plugged in the electrical equipment 1, the plug-in terminal 3 is positioned inside the equipment, and then the grounding terminal 4 can be pulled out of the electrical equipment 1 under the condition that the plug-in terminal 3 in the equipment shell is not disconnected, so that the risk of shielding failure is caused. By the integrated coupling control mechanism, because the horizontal rod 16 and the inclined plane 19 of the vertical rod 17 are at the same height but are not contacted in the natural state of the first spring 18 and the second spring 20, the horizontal rod 16 is disconnected from the middle of the vertical rod 17 in the state of not inserting the insulating protection block 8, so that the grounding terminal 4 connected with the horizontal rod 16 cannot be conducted with the shielding wire 6, even if the grounding terminal 4 is inserted into a power supply or is communicated with the power supply, a conductive loop cannot be formed, namely no current passes, and the phenomenon that the shielding wire 6 (the shielding wire 6 is a weak current wire) is overloaded by current due to the fact that the grounding terminal 4 is inserted into the power supply by mistake due to mistake or other factors is avoided, and the shielding wire 6 is damaged is avoided. 5. Through inserting electric terminal 3, earthing terminal 4 and synthesizing allies oneself with accuse mechanism, after inserting insulating protection block 8 completely, because the elasticity reset performance of first spring 18 and second spring 20 for earthing terminal 4 firmly presses on earthing port 10, conductive presser 21 firmly presses on shielding wire 6, the inclined plane 19 of horizontal pole 16 firmly presses on the inclined plane 19 of vertical pole 17, thereby firmly link together earthing port and shielding wire 6, avoid the not hard up of each part interface department, guarantee the earth performance of shielding wire 6, in addition, shielding wire 6 is pressed on inlayer sheath 5, can avoid shielding wire 6 perk, guarantee the shielding effect of shielding wire 6.
In summary, the above-mentioned structure that sets up integrated allies oneself with accuse mechanism as ingenious horizontal pole 16, vertical pole 17, first spring 18, second spring 20 and conductive presser 21 that connects, its simple structure, low cost, the preparation of being convenient for, the connection relation design is ingenious, a mechanism can realize the control of multiple functional state, for example realize that electrical equipment 1 is first ground and then switch on, break off and ground after switching off, and after electrical wire 2 pulls out completely, naked ground terminal 4 is not linked with shielding wire 6, and can be in the state of switch on, firmly link together electric port and shielding wire 6, avoid the not hard up of each part interface department, multipurpose, the design is ingenious.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. It should be understood that the detailed description is presented for purposes of understanding only and is not intended to limit the invention to all other embodiments that may be obtained by one skilled in the art without making any inventive effort.
Claims (8)
1. The utility model provides an electrical equipment shielded wire earthing device, connects on electrical equipment, includes the electrical wire, inserts electric terminal and earthing terminal, and the electrical wire outside establishes inlayer sheath, shielded wire and outer sheath in proper order from inside to outside, its characterized in that: an electric port matched with an electric terminal and a grounding port matched with a grounding terminal are arranged on the electric equipment, the end part of the inner protective skin is at a certain distance from the electric wire so that the end part of the electric wire is exposed, one end of the electric terminal is fixed with the exposed part of the electric wire end part through an insulating protective block coated outside the electric wire and the outer protective skin in an injection molding manner, the other end of the electric terminal is exposed out of the insulating protective block and matched with the electric port, a circle of annular opening for exposing the shielding wire is arranged on the outer protective skin in the insulating protective block, a horizontal channel with the left side communicated with the outside and a vertical channel with the two ends respectively communicated with the horizontal channel and the annular opening are formed in the outer protective skin in the insulating protective block, the grounding terminal is communicated with or disconnected from the shielding wire exposed at the annular opening through a comprehensive connection control mechanism in the horizontal channel and the vertical channel, and when the electric terminal is inserted in order to electrify the electric wire or extract the electric terminal so that the electric wire is powered off, the comprehensive connection control mechanism enables the shielding wire to be grounded before the electric wire is connected and the electric terminal is automatically disconnected, and then the grounding terminal is disconnected after the electric terminal is disconnected from the electric terminal; the electrical equipment is provided with a socket, and the insulating protection block is provided with a plug matched with the socket; the integrated combined control mechanism comprises a horizontal rod made of conductive materials and a vertical rod made of conductive materials, wherein the horizontal rod is in sliding connection with a horizontal channel, one end of the horizontal rod is connected with a grounding terminal, two fixing blocks are arranged on the periphery of the other end of the horizontal rod, the fixing blocks are connected with the right side wall of the horizontal channel through a first spring made of insulating materials, the right side end surface of the horizontal rod and the upper end wall surface of the vertical rod are arranged to be matched inclined planes which incline from top to bottom to left, and the lower end of the vertical rod is connected with a conductive pressing sheet which can be pressed on a shielding wire through a second spring made of conductive materials; and in the natural state of the first spring and the second spring, the inclined planes of the horizontal rod and the vertical rod are at the same height but are not contacted, and when the insulating protection block is inserted, the horizontal distance between the electric inserting terminal and the electric inserting port is larger than the sum of the horizontal distance between the grounding terminal and the grounding socket and the horizontal distance between the horizontal rod and the inclined plane of the end part of the vertical rod.
2. An electrical equipment shielded wire grounding apparatus according to claim 1, wherein: the electric equipment is provided with a groove matched with the insulating protection block, and the electric plug port and the grounding port are arranged in the groove.
3. An electrical equipment shielded wire grounding apparatus according to claim 2, wherein: the first spring and the second spring are compression springs, and the maximum elastic deformation of the first spring is larger than the horizontal distance between the horizontal rod and the inclined surface of the end part of the vertical rod.
4. A shielding wire grounding apparatus for an electrical device according to any one of claims 1-3, wherein: the conductive pressing sheet is arc-shaped and matched with the shielding wire.
5. A shielding wire grounding apparatus for an electrical device according to any one of claims 1-3, wherein: the bottom of the annular opening is provided with a second sheath which does not interfere with the conductive pressing sheet.
6. A shielding wire grounding apparatus for an electrical device according to any one of claims 1-3, wherein: the upper side and the lower side of the horizontal rod are respectively provided with a horizontal sliding block, the upper side and the lower side of the horizontal channel are respectively provided with a horizontal sliding groove in sliding fit with the horizontal sliding blocks, and the horizontal sliding blocks can be embedded in the horizontal sliding grooves in a sliding manner along the horizontal sliding grooves.
7. A shielding wire grounding apparatus for an electrical device according to any one of claims 1-3, wherein: the left side and the right side of the vertical rod are respectively provided with a vertical sliding block, the upper side and the lower side of the vertical channel are respectively provided with a vertical sliding groove in sliding fit with the vertical sliding blocks, and the vertical sliding blocks can be embedded in the vertical sliding grooves in a sliding manner along the vertical sliding grooves.
8. A shielding wire grounding apparatus for an electrical device according to any one of claims 1-3, wherein: the front side and the rear side of the horizontal channel are respectively provided with a fixed chute which avoids interference with the fixed block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310376717.5A CN116130983B (en) | 2023-04-11 | 2023-04-11 | Grounding device for shielding wire of electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310376717.5A CN116130983B (en) | 2023-04-11 | 2023-04-11 | Grounding device for shielding wire of electrical equipment |
Publications (2)
| Publication Number | Publication Date |
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| CN116130983A CN116130983A (en) | 2023-05-16 |
| CN116130983B true CN116130983B (en) | 2023-06-27 |
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| CN202310376717.5A Active CN116130983B (en) | 2023-04-11 | 2023-04-11 | Grounding device for shielding wire of electrical equipment |
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Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104993295B (en) * | 2015-06-22 | 2018-01-30 | 国网江苏省电力公司泗洪县供电公司 | A kind of bull electrical power connection device |
| CN111740258B (en) * | 2020-07-06 | 2022-02-08 | 项新华 | Anti-electric shock wall type socket based on electromagnetic transformation |
| CN114256698A (en) * | 2021-12-17 | 2022-03-29 | 窦学有 | Shielding line grounding device of electrical equipment |
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