CN212991385U - Hot-line plug large-current contact element - Google Patents
Hot-line plug large-current contact element Download PDFInfo
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- CN212991385U CN212991385U CN202022491383.0U CN202022491383U CN212991385U CN 212991385 U CN212991385 U CN 212991385U CN 202022491383 U CN202022491383 U CN 202022491383U CN 212991385 U CN212991385 U CN 212991385U
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- sleeve
- positioning step
- contact
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Abstract
The utility model discloses a live-wire plug heavy current contact, including socket and plug, the jack has been seted up on the socket, be provided with the contact pin on the plug, still include resistance, electrically conductive seat, electrically conductive sleeve and insulating sleeve, the head suit of socket is in insulating sleeve, insulating sleeve suit is in electrically conductive sleeve, electrically conductive seat is installed to the afterbody of socket, the one end and the electrically conductive seat of resistance are connected, the other end and the electrically conductive muffjoint of resistance, the contact pin includes pole portion and contact site, the diameter of contact site is greater than the diameter of pole portion, the length of contact site is greater than the interval of the outer terminal surface of electrically conductive sleeve and the outer terminal surface of socket, and the length of contact site is less than the degree of depth of jack, electrically conductive telescopic head still is provided with can take. The utility model has the advantages that: through resistance, electrically conductive sleeve and electrically conductive seat for this contact has avoided the influence of electric arc at the plug in-process, all is not damaged to contact pin and jack simultaneously.
Description
Technical Field
The utility model relates to a heavy current contact, especially a live wire plug heavy current contact.
Background
Hot plugging, i.e., "hot plugging", means to plug or unplug a subsystem in the case of hot-line operation of the system without causing damage to the system or the subsystem, and to ensure that the system can still work normally during hot plugging and after the hot plugging is completed. For hot plugging at high voltage, the generated surge current becomes negligible, but an arc is generated. If the operating voltage of the system is much greater than the minimum arcing voltage of the connector pin and socket metals, an arc will be generated when a subsystem is hot plugged. The arc can damage the connector contact plating and even cause system power outages or fires. The electric field intensity is high when the contact pieces are about to contact/separate or in the process of contacting/separating, and a small gap exists between the contact pieces. If the field intensity is larger than 3 x 106V/m, electrons are pulled out from the surface of the cathode by the electric field and accelerated to the anode under the electric field, and collide with neutral atoms or molecules in the process to generate more electrons and positive ions, and high temperature is generated to enable the cathode to emit more electrons outwards, and finally high-temperature high-conductivity free gas is generated between contacts to form an electric arc.
When designing a hot plug connector for a heavy load system, an important point is to prevent the connector from generating an arc during hot plug, and generally adopted methods include: the sacrificial pin, the outer coating of a polymer at the point where the arc is generated, and the inert gas blown in the direction of the generated arc.
The technical method of the sacrifice pin shifts the position of the arc generation, but the arc is not eliminated, although the jack is protected, the pin is sacrificed, and the harm caused by the arc is weakened to a certain extent. The technical method for adding the conductive polymer on the socket joint surface and wrapping a layer of hydrocarbon polymer outside the jack is to avoid or weaken the influence of electric arc by increasing the voltage required for generating the electric arc and reducing the existing time of the electric arc. The latter two techniques can avoid the generation of electric arc to a certain extent, but have complex structure, are still in the test stage and have higher cost.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's shortcoming, provide a hot plug heavy current contact piece that can avoid electric arc.
The purpose of the utility model is realized through the following technical scheme: the utility model provides a live electric power extraction heavy current contact, including socket and plug, the jack has been seted up on the socket, be provided with the contact pin on the plug, still include resistance, electrically conductive seat, electrically conductive sleeve and insulating sleeve, the head suit of socket is in insulating sleeve, insulating sleeve suit is in electrically conductive sleeve, electrically conductive seat is installed to the afterbody of socket, the one end and the electrically conductive seat of resistance are connected, the other end and the electrically conductive muffjoint of resistance, the contact pin includes pole portion and contact site, the diameter of contact site is greater than the diameter of pole portion, the length of contact site is greater than the interval of the outer terminal surface of electrically conductive sleeve and the outer terminal surface of socket, and the length of contact site is less than the degree of depth of jack, electrically conductive telescopic head still.
Preferably, a clamping groove is formed in the conductive seat, a wire clamp is arranged on the conductive sleeve, one end of the resistor is installed in the clamping groove, and the other end of the resistor is installed in the wire clamp.
Preferably, the outer edge of the head of the socket is provided with a positioning step a, and the inner side wall of the insulating sleeve is provided with a positioning groove a matched with the positioning step a.
Preferably, the outer edge of the insulating sleeve is provided with a positioning step b, and the inner side wall of the conductive sleeve is provided with a positioning groove b matched with the positioning step b.
Preferably, the positioning step a has a wedge-shaped surface, and the diameter of the end of the positioning step a far away from the plug is larger than that of the end of the positioning step a close to the plug.
Preferably, the positioning step b has a wedge-shaped surface, and the diameter of the end of the positioning step b far away from the plug is larger than that of the end of the positioning step b close to the plug.
Preferably, the conductive socket is mounted on the tail of the socket by screws.
Preferably, the pins are resilient pins.
The utility model has the advantages of it is following: the utility model discloses a hot plug heavy current contact spare through resistance, electrically conductive sleeve and electrically conductive seat for this contact spare has avoided the influence of electric arc at the plug in-process, all is not damaged to contact pin and jack simultaneously.
Drawings
FIG. 1 is a first schematic structural diagram of a socket;
FIG. 2 is an exploded view of the receptacle;
FIG. 3 is a schematic structural view of a plug;
FIG. 4 is a schematic structural view of a conductive sleeve;
FIG. 5 is a schematic view of the insulating sleeve and the conductive sleeve;
fig. 6 is a schematic structural view of the contact head of the present invention contacting with the conductive sleeve;
fig. 7 is a schematic structural view of the contact head of the present invention contacting with the conductive sleeve and the jack respectively;
FIG. 8 is a schematic view of the insertion structure of the present invention;
in the figure, 1-socket, 2-jack, 3-plug, 4-pin, 5-conductive sleeve, 6-insulating sleeve, 7-resistor, 8-conductive seat, 9-screw, 10-card slot, 11-positioning step a, 12-positioning step b, 13-line card, 14-positioning groove b, 15-positioning groove a, 16-via hole.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, 2 and 3, a hot-plug large-current contact includes a socket 1 and a plug 3, the socket 1 is provided with a jack 2, the plug 3 is provided with a pin 4, and further includes a resistor 7, a conductive seat 8, a conductive sleeve 5 and an insulating sleeve 6, in this embodiment, one end of the socket 1 provided with the jack 2 is a head, the head of the socket 1 is sleeved in the insulating sleeve 6, the insulating sleeve 6 is sleeved in the conductive sleeve 5, further, an outer edge of the head of the socket 1 is provided with a positioning step a11, preferably, the socket 1 and the plug 3 are both in a revolving body structure, and the positioning step a11 is in a ring shape, as shown in fig. 5, a positioning groove a15 matched with the positioning step a11 is provided on an inner side wall of the insulating sleeve 6, and after the positioning step a11 is matched with the positioning groove a15, the surface insulating sleeve 6 is installed in place, in this embodiment, in order to facilitate the installation of the insulating sleeve 6, the positioning step a11 has a wedge-shaped surface, the diameter of one end of the positioning step a11, which is far away from the plug 3, is larger than the diameter of one end of the positioning step a11, which is close to the plug 3, the height of the positioning step a11 is not high, when the positioning step a11 contacts with the inner side wall of the insulating sleeve 6, the insulating sleeve 6 deforms, therefore, during the installation, the insulating sleeve 6 is sleeved at the head of the socket 1, then the insulating sleeve 6 or the socket 1 is pushed with force, so that the socket 1 and the insulating sleeve 6 are in relative positions, and when the positioning step a11 is clamped in the positioning groove a15, the surface insulating sleeve 6 is installed in place.
In this embodiment, as shown in fig. 4 and 5, a positioning step b12 is provided on the outer edge of the insulating sleeve 6, a positioning groove b14 matched with the positioning step b12 is provided on the inner side wall of the conductive sleeve 5, the positioning step b12 has a wedge-shaped surface, the diameter of the end of the positioning step b12 far away from the plug 3 is larger than the diameter of the end of the positioning step b12 close to the plug 3, and the positioning step b12 and the positioning step a11 have the same structure, so that the conductive sleeve 5 and the insulating sleeve 6 are mounted in the same manner.
In this embodiment, as shown in fig. 1, fig. 2 and fig. 3, the conducting seat 8 is installed at the tail of the socket 1, further, the conducting seat 8 is installed at the tail of the socket 1 through a screw 9, one end of the resistor 7 is connected with the conducting seat 8, the other end of the resistor 7 is connected with the conducting sleeve 5, further, a clamping groove 10 is arranged on the conducting seat 8, a wire clip 13 is arranged on the conducting sleeve 5, one end of the resistor 7 is installed in the clamping groove 10, the other end of the resistor 7 is installed in the wire clip 13, two ends of the resistor 7 are provided with conducting wires, and the conducting wires are respectively connected with the conducting seat 8 and the conducting sleeve 5, so that the electrical conduction between the conducting sleeve 5, the conducting seat 8 and the resistor 7.
In this embodiment, the pin 4 includes a rod portion and a contact portion, the diameter of the contact portion is greater than that of the rod portion, the length of the contact portion is greater than the distance between the outer end surface of the conductive sleeve 5 and the outer end surface of the socket 1, further, the outer end surface of the conductive sleeve 5 is the end surface of the conductive sleeve 5 close to the plug 3, the outer end surface of the socket 1 is the end surface close to the plug 3, and the length of the contact portion is less than the depth of the jack 2, the head portion of the conductive sleeve 5 is further provided with a via 16 capable of interfering with the contact portion, further, the pin 4 is an elastic pin 4, that is, a split groove is provided on the pin 4, as shown in fig. 6, when the plug 3 and the socket 1 are just inserted, the contact portion enters the via 16, the contact portion interferes with the via 16, the contact portion deforms, at this time, the contact portion, the conductive sleeve 5, the resistor 7 and the conductive socket 1 form a conductive, thus rendering the socket 1 non-conductive, the resistance 7 in the circuit causes a significant increase in the voltage required to generate the arc, thus avoiding the effect of the arc when the pin 4 is in contact with the conductive sleeve 5; as shown in fig. 7, when the contact portion is inserted continuously, since the length of the contact portion is greater than the distance between the outer end surface of the conductive sleeve 5 and the outer end surface of the socket 1, when the contact portion is just in contact with the jack 2, at this time, the contact portion, the conductive sleeve 5, the resistor 7 and the conductive socket 1 form a loop, the contact portion, the socket 1 and the conductive seat 8 form a loop, the two loops are in parallel connection, the resistance value of the resistor 7 is much greater than that of the contact resistor 7, so that the current flowing through the contact pin 4 and the jack 2 is much less than the total current of the whole circuit, and the influence of the arc is avoided; as shown in fig. 8, when the plug 3 is inserted continuously, the contact portion is separated from the conductive sleeve 5, the contact portion enters the jack 2 completely, and after the plug 3 and the socket 1 are inserted and combined, only the contact resistor 7 between the contact pin 4 and the jack 2 exists between the plug 3 and the socket 1, so that electrical connection is realized, and in the process of pulling out the plug 3, the principle of avoiding the electric arc is the same as the principle of avoiding the electric arc when the plug 3 is inserted, so that the detailed description is omitted.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a heavy current contact member is pulled out to electrified mortise, includes socket and plug, the jack has been seted up on the socket, be provided with contact pin, its characterized in that on the plug: the socket comprises a socket body and is characterized by further comprising a resistor, a conductive seat, a conductive sleeve and an insulating sleeve, wherein the head of the socket is sleeved in the insulating sleeve, the insulating sleeve is sleeved in the conductive sleeve, the conductive seat is installed at the tail of the socket, one end of the resistor is connected with the conductive seat, the other end of the resistor is connected with the conductive sleeve, the contact pin comprises a rod part and a contact part, the diameter of the contact part is larger than that of the rod part, the length of the contact part is larger than the distance between the outer end face of the conductive sleeve and the outer end face of the socket, the length of the contact part is smaller than the depth of the jack, and the head of the conductive sleeve is further provided with a via hole which can interfere with the contact.
2. A hot-pluggable high current contact according to claim 1, characterized in that: the conductive socket is provided with a clamping groove, the conductive sleeve is provided with a wire clamp, one end of the resistor is installed in the clamping groove, and the other end of the resistor is installed in the wire clamp.
3. A hot-pluggable high current contact according to claim 1, characterized in that: the socket is characterized in that a positioning step a is arranged on the outer edge of the head of the socket, and a positioning groove a matched with the positioning step a is arranged on the inner side wall of the insulating sleeve.
4. A hot-pluggable high current contact according to claim 1, characterized in that: the outer edge of the insulating sleeve is provided with a positioning step b, and the inner side wall of the conductive sleeve is provided with a positioning groove b matched with the positioning step b.
5. A hot-pluggable high current contact according to claim 3, characterized in that: the positioning step a is provided with a wedge-shaped surface, and the diameter of one end, far away from the plug, of the positioning step a is larger than that of one end, close to the plug, of the positioning step a.
6. A hot-pluggable high-current contact according to claim 4, characterized in that: the positioning step b is provided with a wedge-shaped surface, and the diameter of one end, far away from the plug, of the positioning step b is larger than that of one end, close to the plug, of the positioning step b.
7. A hot-pluggable high-current contact according to claim 1 or 2, characterized in that: the conductive seat is installed at the tail part of the socket through a screw.
8. A hot-pluggable high current contact according to claim 1, characterized in that: the contact pin is an elastic contact pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022491383.0U CN212991385U (en) | 2020-11-02 | 2020-11-02 | Hot-line plug large-current contact element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022491383.0U CN212991385U (en) | 2020-11-02 | 2020-11-02 | Hot-line plug large-current contact element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212991385U true CN212991385U (en) | 2021-04-16 |
Family
ID=75419988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022491383.0U Active CN212991385U (en) | 2020-11-02 | 2020-11-02 | Hot-line plug large-current contact element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212991385U (en) |
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2020
- 2020-11-02 CN CN202022491383.0U patent/CN212991385U/en active Active
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