CN115224553A - Plug with improved structure - Google Patents

Abstract

The invention discloses a plug, at least comprising an insulating shell, an insulating wire, a plurality of pins, wherein the plurality of pins at least comprise two conductive pins, the plug is used on a socket, at least one switch is arranged on the socket, the conductive pins are inserted into a chuck inside the socket to switch on electric energy, the plug also comprises at least one driving part, and the driving part directly or indirectly drives the at least one switch to be switched on or switched off.

Description

Plug with improved structure

Technical Field

The invention relates to the field of low-voltage electrical appliances, in particular to a plug.

Background

With the development of economy and the improvement of environmental awareness, the countries are increasing the investment in the fields of clean energy such as photovoltaic energy, wind energy and the like in recent years. Therefore, in the near future, dc power distribution systems will be used in more and more actual production operation scenarios.

As is well known, the waveform of alternating current is a sinusoidal waveform, and zero points are passed every time one cycle passes. For the household plug, large electric arcs cannot be generated during normal plugging. Even if the load is large, the plug generates electric arcs in plugging, and the electric arcs can be automatically extinguished in the zero crossing point process of the circuit. However, direct current does not have a zero point, so that the whole circuit cannot extinguish the arc at the zero crossing point like alternating current. The direct current distribution system has the problems that electric arcs are difficult to extinguish and the service life of the plug is influenced by burning of pins of the electric arcs in the actual production process.

With the wide application of the direct current distribution system, various direct current sockets gradually appear, but no plug matched with the socket with the arc extinguish chamber exists in the current market, and the direct current plug capable of being widely matched with the direct current socket becomes the urgent demand of the direct current distribution system at present.

Disclosure of Invention

Against the above background, the present invention provides a plug capable of effectively overcoming the above problems, in order to solve at least one of the above problems.

The invention is realized by the following technical scheme:

a plug at least comprises an insulating shell, an insulating wire and a plurality of pins, wherein the plurality of pins at least comprise two conductive pins, the plug is used on a socket, at least one switch is arranged on the socket, the conductive pins are inserted into a chuck inside the socket to be connected with electric energy, and the plug also comprises at least one driving part which directly or indirectly drives the at least one switch to be switched on or switched off.

Preferably, the driving part is arranged on the insulating shell or/and movably hidden in the insulating shell.

Preferably, the driving portion is a non-conductive protrusion disposed on the insulating housing, and the non-conductive protrusion is integrally formed with the insulating housing.

Preferably, the driving part comprises at least an operating rod, and the operating rod is partially or completely positioned in the insulating shell.

Preferably, a through hole penetrating the outside is formed in the insulating housing, and the driving portion is disposed in the through hole.

Preferably, the driving part further comprises a cover plate positioned on one side of the through hole, the cover plate is provided with a through hole, and the through hole coincides with the axis of the through hole.

Preferably, one end of the operating rod can extend out of the through hole to be in contact with the at least one switch. 8. The plug of claim 4, wherein the lever includes a rack bar and a lock tooth member that is automatically rotatable and axially movable in response to pressing the rack bar.

Preferably, an elastic element is arranged on the operating rod.

Preferably, the height of the non-conductive protrusion is higher than the height of the pin.

Preferably, the height of the non-conductive bump is lower than the height of the pin.

Preferably, the height of the non-conductive bump is flush with the height of the pin.

Preferably, the plurality of pins include two conductive pins, and the rest of the pins are non-conductive pins for fixing.

Preferably, there are 2-4 pins.

Preferably, the drive portion is located between the plurality of prongs.

Preferably, the cross section of the pins is rectangular, and the long sides of the cross sections of different pins are parallel to each other.

Preferably, the pins are sheet-shaped structures with certain thicknesses, and planes of the pins are parallel to each other.

Preferably, the cross-section of the pin is circular.

Preferably, one end of the driving part can extend out of the insulating shell and can cooperate with an arc extinguishing chamber of a plastic shell of a corresponding socket to act.

Preferably, an end face of the driving part is higher or lower than the outer surface of the insulating shell or flush with the outer surface of the insulating shell, and one end face of the driving part can be manually operated.

Preferably, a locking mechanism is further included, which locks after the prong is inserted into the socket.

Preferably, the locking mechanism at least comprises a hook and an elastic piece for pulling the hook to reset.

Preferably, the driving part 30 drives the switch to be turned on or off earlier than the conductive pin is turned on or off with the chuck inside the socket

The invention has the following beneficial effects:

(1) The plug is matched with a corresponding socket for use, the breaking time of the driving part and the switch of the arc extinguish chamber of the socket is earlier than that of the conductive pin and the chuck on the socket, and the breaking of a power supply is controlled by effectively realizing the matching of the plug and the arc extinguish chamber of the socket;

(2) The driving part and the insulating shell of the plug are integrally designed or positioned in the insulating shell, so that the space utilization is reasonable, the process is simple and the cost is low;

(3) The pins are designed to be rectangular, and are arranged in parallel, the pins are distributed in a triangular shape, the structure is stable and reliable, and the displacement of the plug caused by vibration or swing can be effectively reduced.

(4) The plug is matched with a corresponding socket for use, so that the burning loss of the pins and the conductive chucks caused by electric arcs can be effectively reduced, and the service lives of the plug and the socket are prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments described in the present application, and for those skilled in the art, other drawings may be obtained according to these drawings without creative efforts.

Fig. 1 is a front view of a plug of a first embodiment of the present invention;

fig. 2 is a cross-sectional view of a plug according to a first embodiment of the present invention;

FIG. 3 is a schematic structural view of an operating lever according to a first embodiment of the present invention;

fig. 4 is a front view of a plug of a second embodiment of the present invention.

Fig. 5 is a cross-sectional view of a plug according to a second embodiment of the present invention.

Fig. 6 is a front view of a plug of a third embodiment of the present invention.

Fig. 7 is a schematic cross-sectional view of a plug according to a third embodiment of the present invention.

Fig. 8 is a schematic sectional view of a plug according to a fourth embodiment of the present invention.

Fig. 9 is a front view of a plug of a fifth embodiment of the present invention.

Fig. 10 is a schematic sectional view of a plug of a fifth embodiment of the present invention.

Fig. 11 is a cross-sectional view of a plug of a sixth embodiment of the present invention.

Fig. 12 is a cross-sectional view of a plug of a seventh embodiment of the present invention.

Detailed Description

Features of various aspects and exemplary embodiments of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. The present invention is in no way limited to any specific configuration and algorithm set forth below, but rather covers any modification, replacement or improvement of elements, components or algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present invention.

For convenience of description, the drawings referred to below are based on the noted figure numbers, it is noted that the above-indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

First embodiment

As shown in fig. 1 and fig. 2, the embodiment of the present invention discloses a plug 100, which includes an insulating housing 10, an insulated wire 40, a pin 20, and at least one driving portion 30, where the plug 100 is used in a socket, the socket is provided with at least one switch, and a conductive pin is inserted into a chuck inside the socket to be powered on, in this embodiment, the driving portion 30 is hidden in the insulating housing 11, the driving portion 30 directly or indirectly drives the at least one switch of the socket to be turned on or off, and the time for the driving portion 30 to drive the switch to be turned on or off is earlier than the time for the conductive pin to be turned on or off with the chuck inside the socket.

With continued reference to fig. 1, the insulating housing 10 has a mounting surface 11, the pins 20 are disposed on the mounting surface 110, the length extending direction of the pins 20 is perpendicular to the mounting surface 11, the plug 100 in this embodiment has two pins, both of which are conductive pins, the pins 20 are sheet-shaped structures with a certain thickness, the planes of the two pins are disposed in parallel, that is, the cross section of each pin 20 is rectangular, the long sides of the cross sections of the two pins 20 are parallel to each other, and the two pins 20 are symmetrically distributed along the central axis therebetween, as shown in fig. 1. The pins 20 are welded to the insulated wires 40 inside the plug 100, and the insulated wires 40 are protruded from one side of the insulating housing 10.

As shown in fig. 2, in this embodiment, the driving portion includes an operation rod 32, the operation rod 32 is partially or entirely located in the insulating housing 10, a through hole penetrating through the insulating housing 10 is provided on the insulating housing 10, an axis of the through hole is parallel to a straight line of a length extending direction of the pin 20, the driving portion 30 is disposed in the through hole, the driving portion 30 further includes a cover plate 31 located on one side of the through hole, the cover plate 31 is welded on an inner wall of the through hole on a side close to the mounting surface 11 through plastic ultrasonic waves, a through hole is provided on the cover plate 31, the through hole coincides with the axis of the through hole, and one end of the operation rod 32 can extend out of the through hole to contact with the at least one switch.

With continued reference to fig. 2 and 3, the operation rod 32 includes a first rod 321 and a second rod 322 extending along the same direction, the first rod 321 and the second rod 322 are fixedly connected or integrally formed, the first rod 321 and the second rod 322 are cylindrical rods with different diameters, the diameter 321 of the first rod is larger than the diameter of the second rod 322, a step 323 is formed between the first rod 321 and the second rod 322, an end surface of the first rod 321 is flush with an outer surface of the insulating housing, so as to facilitate the pressing operation, an end portion of the second rod 322 can extend out of or retract into the through hole for driving the switch of the socket to be closed or opened, and of course, the end surface of the first rod 321 can be higher or lower than the outer surface of the insulating housing as long as an external force can be contacted and applied from the outside.

Further, the plug 100 of the present embodiment further includes an elastic element 33 for driving the operating rod 32 to return, the elastic element 33 is a spring or other elastic material, the elastic element 33 is sleeved outside the second rod 322, one end of the elastic element abuts against the step 323, and the other end of the elastic element abuts against the cover plate 31. When an operator presses the end of the first rod 321, the operating rod 32 is subjected to an external force to perform an axial movement, so that the end of the second rod 322 extends out of the through hole of the cover plate 31 to contact with the switch of the socket, so as to realize the on/off of the switch, and at this time, the elastic element 33 is in a compressed state; when the external force on the operating rod 32 is removed, the reaction force provided by the elastic element 33 pushes the operating rod 32 in the opposite direction, the elastic element 33 is reset, the end of the second rod 322 retracts into the through hole and is far away from the switch of the socket, so that the controllable operation of the operating rod 32 effectively realizes that the plug 100 is matched with the arc extinguish chamber of the socket to control the power supply breaking.

The invention also comprises a locking mechanism, after the plug 20 is inserted into the socket, the locking mechanism locks the locking mechanism and at least comprises a hook and an elastic element for pulling the hook to reset, the hook is rotatably arranged at the side part of the socket 10, a locking groove is correspondingly arranged on the socket, when the plug 20 is completely inserted into the socket, the hook is inserted into the locking groove to lock the plug and the socket, and the plug and the socket are prevented from falling off.

Second embodiment

As shown in fig. 4 and 5, the present embodiment is different from the first embodiment in that the plug includes three pins 20, all of the three pins 20 are conductive pins or two of the three pins 20 are conductive pins and one is a non-conductive pin for fixing, and as with the first embodiment, the cross sections of the three pins 20 in the present embodiment are all rectangular, the long sides of the rectangular cross sections of the three pins 20 are parallel to each other, the three pins 20 are distributed in a "pin" shape, and the triangular arrangement of the three pins is beneficial to the stable connection between the plug and the socket, and is not easy to loosen the plug and the socket, and reduces the displacement of the plug caused by vibration or swing.

In this embodiment, the driving portion 30 is located between the three pins 20, so that the structural layout is reasonable, the size of the plug is reduced, and the small-size design of the plug is realized.

Third embodiment

As shown in fig. 6 and 7, the present embodiment is different from the first embodiment in that the plug includes four pins 20, the four pins include two conductive pins and two non-conductive pins for fixing, and as in the first embodiment, the cross sections of the four pins 20 are all rectangular, and the long sides of the cross sections of the four pins 20 are parallel to each other.

Four pins 20 are distributed in a vertically staggered manner, two pins 20 are arranged on the upper part of the mounting surface 11, the other two pins 20 are arranged on the lower part of the mounting surface 11, here, the two pins on the upper part of the mounting surface 11 are conductive pins, and the two pins on the lower part of the mounting surface 11 are non-conductive pins for fixing; alternatively, the two pins located at the upper portion of the mounting surface 11 are non-conductive pins for fixing, and the two pins located at the lower portion of the mounting surface 11 are conductive pins. The two pins at the upper part of the mounting surface 11 and the two pins at the lower part are symmetrically distributed along the same straight line. The two fixed non-conductive pins are used for stably connecting the plug and the socket, so that the plug and the socket are not easy to loosen.

Further, the distance between the two pins 20 located at the upper portion of the mounting surface 11 is smaller than the distance between the two pins 20 located at the lower portion of the mounting surface 11, and the driving portion 30 is located between the two pins having the larger distance.

Fourth embodiment

As shown in fig. 8, the plug of this embodiment is different from the second embodiment in that the structure of the operation lever is different, in this embodiment, the operation lever 32 includes a rack 321 and a lock rack 322 capable of automatically rotating and moving in the axial direction as the rack 321 is pressed, the cross section of the rack 321 is T-shaped, the rack includes a first rack and a second rack, the diameter of the first rack is larger than that of the second rack, the diameter of the second rack is identical to that of the lock rack 322, the end of the second rack has teeth matching with the teeth of the lock rack 322, the elastic element 33 is sleeved outside the second rack and the lock rack 322, one end of the elastic element abuts against the end surface of the first rack, and the other end abuts against the cover plate 31.

When an operator presses the first toothed bar end of the toothed bar 321, the toothed bar 321 is subjected to an external force to perform an axial movement, teeth on the toothed bar 321 are matched with teeth on the lock toothed bar 322, the toothed bar 321 pushes the lock toothed bar 322 to rotate and move for a certain distance along the axial direction of the lock toothed bar, the teeth on the toothed bar 321 and the teeth on the lock toothed bar 322 are locked with each other and are kept stable, so that the end of the lock toothed bar 322 extends out of the through hole on the cover plate 31 and is in contact with a switch of a socket to realize the on/off of the switch, and at the moment, the elastic element 33 is in a compressed state; when the rack bar 321 is pressed down again and released, the teeth on the rack bar 321 and the teeth on the locking rack bar 322 release the locking state, the reaction force provided by the elastic element 33 pushes the rack bar 321 in the opposite direction, the elastic element 33 resets, the end of the locking rack bar 322 retracts into the through hole and is far away from the switch of the socket, and thus the controllable operation of the operating rod 32 effectively realizes the matching of the plug 100 and the arc extinguish chamber of the socket to control the power supply breaking.

Fifth embodiment

As shown in fig. 9 and 10, the present embodiment is different from the second embodiment in that the driving portion is a non-conductive protrusion 50 on the insulating housing 10, the non-conductive protrusion 50 is integrally formed with the insulating housing 11, or the non-conductive protrusion 50 is a protrusion fixed on the insulating housing, the non-conductive protrusion 50 and the pins 20 are both located on the mounting surface 11, the non-conductive protrusion 50 is located between the three pins 20, the height of the non-conductive protrusion 50 is lower than that of the pins 20, and the pins 20 can effectively protect the protrusion 50 from being damaged. The non-conductive protrusion 50 and the corresponding position of the arc extinguish chamber of the socket are arranged in the middle of the insulating shell 11, and when the plug 100 is inserted into the socket, the protrusion mechanism 50 triggers the arc extinguish chamber to connect the circuit.

Otherwise, the plug is pulled out, the arc extinguish chamber corresponding to the plug is reset, and the power supply of the jack is controlled to be disconnected.

Sixth embodiment

As shown in fig. 11, the present embodiment is different from the fifth embodiment in that the height of the non-conductive protrusion 50 is higher than that of the pin 20, when the plug 100 is inserted into the socket, the non-conductive protrusion 50 triggers the arc-extinguishing chamber of the socket to close the circuit; when the plug 100 is pulled out of the socket, the arc extinguishing chamber of the corresponding socket is reset, and the power supply of the socket jack is disconnected.

Seventh embodiment

As shown in fig. 12, the present embodiment is different from the fifth embodiment in that the height of the non-conductive protrusion 50 is equal to the height of the pin, and the height setting of the non-conductive protrusion 50 and the pin 20 can be adjusted according to the specific plug requirements.

The plug is matched with a corresponding socket for use, the breaking time of the driving part and the switch of the arc extinguish chamber of the socket is earlier than that of the conductive pin and the chuck on the socket, and the breaking of a power supply is controlled by effectively realizing the matching of the plug and the arc extinguish chamber of the socket.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made to the embodiment of the present invention by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The present embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (23)

1. A plug at least comprises an insulating shell, an insulating wire and a plurality of plug pins, wherein the plurality of plug pins at least comprise two conductive plug pins, the plug is used on a socket, at least one switch is arranged on the socket, and the conductive plug pins are inserted into a chuck inside the socket to be connected with electric energy, and the plug is characterized in that: the plug also comprises at least one driving part which directly or indirectly drives the at least one switch to be switched on or switched off.

2. The plug of claim 1, wherein the drive portion is disposed on or/and movably concealed within the insulative housing.

3. The plug of claim 1 wherein said drive portion is a non-conductive projection disposed on said insulative housing, said non-conductive projection being integrally formed with said insulative housing.

4. A plug as claimed in claim 1 or 2, in which the drive portion comprises at least an operating lever, the operating lever portion or all being located within the insulating housing.

5. The plug of claim 4, wherein the insulating housing is provided with a through hole penetrating the outside, and the driving portion is disposed in the through hole.

6. The plug of claim 5, wherein the driving part further comprises a cover plate positioned at one side of the through hole, and a through hole is arranged on the cover plate and is coincident with the axis of the through hole.

7. The plug of claim 6, wherein an end of the lever extends through the aperture to contact the at least one switch.

8. The plug of claim 4 wherein the lever includes a toothed bar and a locking tooth that is automatically rotatable and axially movable in response to pressing the toothed bar.

9. A plug according to claim 4, in which the operating lever is provided with a resilient element.

10. The plug of claim 3 wherein the height of the non-conductive bumps is greater than the height of the pins.

11. The plug of claim 3 wherein the height of the non-conductive bumps is less than the height of the pins.

12. The plug of claim 3 wherein the height of the non-conductive bumps is flush with the height of the pins.

13. The plug of claim 1, wherein two of said plurality of prongs are electrically conductive prongs and the remaining of said prongs are electrically non-conductive prongs for retention.

14. The plug of claim 13 wherein said pins are 2-4.

15. The plug of claim 1, wherein the driver is located between a plurality of prongs.

16. The plug of claim 1 wherein said pins are rectangular in cross-section with the long sides of the cross-sections of the different pins being parallel to each other.

17. The plug of claim 1 wherein said pins are of a sheet-like configuration having a thickness, and a plurality of said pins are disposed in planes parallel to one another.

18. The plug of claim 1 wherein said pin is circular in cross-section.

19. The plug of claim 2 wherein said drive portion has an end that extends beyond said insulative housing and is engageable with a plastic housing arc extinguishing chamber of a corresponding socket.

20. The plug of claim 2 wherein an end face of said driver is flush with or above or below an outer surface of said insulative housing, said end face of said driver being manually operable.

21. The plug of claim 1 further comprising a locking mechanism that locks upon insertion of the prong into the receptacle.

22. The plug of claim 21, wherein the locking mechanism comprises at least a hook and an elastic member for pulling the hook to return.

23. The plug of claim 1, wherein the switch is driven to close or open by the driver 30 at a time earlier than when the conductive pin is connected or disconnected with a collet inside the socket.

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