CN105261907A - Telescopic earth-pole plug pin converter - Google Patents

Abstract

The invention relates to a retractable ground pole plug converter. In order to solve the problem that the non-ground pole pin structure does not meet the safety requirements and the fixed ground pole pin has poor applicability in the multi-country socket converter, it includes a shell and a socket, which are located in the shell The plug base and ground pole base in the body are characterized in that the ground pole base is provided with ground pole pins, and the ground pole base is located above the plug base; the plug base is provided with L pole pins and N pole pins, And there is a through hole matching with the ground pole pin; the ground pole pin includes a sleeve pin, the upper end and inner hole of the sleeve pin are equipped with a guide post, and the guide post is fixed on the ground pole base and maintains electrical conduction with the sleeve pin ; Through the sliding of the plug base, the L pole pin, the N pole pin and the sleeve pin are protruded out of the shell. The components are compact and reasonable in structure, and the ground pin moves flexibly and stably. The ground pin of the plug part has a substantial grounding function, and it can be stretched and expanded, so it has strong applicability.

Description

A Retractable Earth Pin Converter

technical field

The invention relates to electrical switch technology, in particular to a retractable ground pole plug converter.

Background technique

The socket converter is mainly to convert one form of socket into another form or multiple forms of sockets. If it is necessary to convert between socket standards in multiple countries, it is called a multi-country converter. The L and N poles of socket standards in some countries in the world are the same, and only the requirements for the ground pin are different.

The socket converter in the prior art also has a variety of open structures, such as the patent announcement number CN203883277U, a designed socket converter is a converter that realizes the conversion between two plugs and three plugs, and is placed in the housing The grounding plug, the live wire plug and the neutral wire plug on the top, and the conductive components placed in the housing, the transfer sockets are arranged symmetrically on both sides of the housing, and the housing is provided with a storage chamber directly below the corresponding grounding plug. A movable component for controlling the extension or retraction of the grounding blade is arranged in the cavity. Another example is a plug provided by the patent announcement number CN204190016U. The lower cover is provided with a groove for accommodating the grounding pin, and a guide channel is provided extending along the groove toward the inside of the lower cover. The grounding pin includes a grounding part and a plug. Connecting part, one end of the plugging part is symmetrically provided with a clamping block; the plugging part can be inserted into the groove and the clamping block is clamped with the guide channel in the groove to fix the grounding pin and the lower cover. These converters are mainly in two forms: one is the multi-country converter with replaceable plug parts. This kind of converter generally has multiple plug parts, which is not easy to store or the volume is larger after storage; the other is the converter set for multiple countries. This product has a large number of converters and poor portability. In addition, most of the multi-country converter plug parts do not have a ground pin, that is, they have no grounding function, but the jacks of the socket parts generally use a three-pole hole type, that is, with a ground hole, which poses a safety hazard to electrical appliances that need to be grounded; And the plug part has a fixed ground pin, which is poor in applicability. Also, if the patent announcement number is CN204424645U, a plug with a telescopic ground pin, a compression spring is provided between the bottom of the ground pin and the support seat, and there are two holes for extending and retracting the ground pin in the plug base. A pin limit mechanism for limiting the limit position. This structure lacks stability because the ground pole pin is only limited by the movable limit piece after the spring is compressed.

Contents of the invention

The purpose of the present invention is to solve the problem that the existing multi-country socket converter has a non-ground pole plug structure that does not meet the safety requirements, and the fixed ground pole plug has poor applicability, and provides a structure that is reasonable in design, easy to use, and strong in applicability The retractable ground pin converter.

The above-mentioned technical problems of the present invention are mainly solved by the following technical solutions: a retractable ground pole plug converter, including a shell, a socket, a plug base and a ground pole base located in the shell, and its characteristics The ground pole base is provided with ground pole pins, and the ground pole base is located above the plug base; the plug base is provided with L pole pins and N pole pins, and is provided with a through hole; the ground pole pin includes a sleeve-shaped pin, the upper end of the sleeve-shaped pin and the inner hole are equipped with a guide post, the guide post is fixed on the ground base and kept in electrical conduction with the sleeve-shaped pin, and the sleeve-shaped pin is along the guide The column slides up and down and passes through the through hole; the plug base is slidably arranged in the housing, and the sliding of the plug base drives the L-pole pin, N-pole pin and sleeve pin to protrude out of the shell.

This technical solution is mainly composed of a plug base and a ground pole base. Shaped pins and guide posts are used to realize mutual sliding up and down and rotary reset. The lower section of the guide post is inserted into the central circular hole provided on the sleeve-shaped bolt, and the electrical connection is realized through the elastic bumps provided on the guide post. In this case, the multi-structure limit shrapnel cooperates with the limit steps at only some positions on the outer wall of the sleeve pin to limit the slide of the sleeve pin along the guide post, thereby ensuring that the plug assembly has a plug with a ground pin. When the limit shrapnel withdraws from the limit step and does not function as a limit, the sleeve pin can slide along the guide post, and when the sleeve pin is pressed hard, it can be retracted into the plug to form a groundless pin The plug realizes that the same plug assembly is suitable for sockets with a ground jack and sockets without a ground jack.

Preferably, a drive mechanism is provided between the top of the sleeve pin and the ground base to drive the sleeve pin to rotate, and the drive mechanism drives the sleeve pin to rotate and reset; or the top of the sleeve pin A drive mechanism for driving the sleeve-shaped latch to rotate is provided between the top of the guide post, and the sleeve-shaped latch is driven to rotate and reset by the drive mechanism.

Preferably, the through hole of the plug base is provided with a limit elastic piece, and a limit step is provided on a part of the outer wall of the sleeve-shaped latch, and when the sleeve-shaped latch is retracted into the converter, the drive mechanism drives the sleeve After the shape bolt is rotated and reset, the limit step and the position of the limit shrapnel are in the same direction. The restraint and freedom of the sleeve-shaped latch are obtained through the mutual restriction of the limit shrapnel and the limit step.

Preferably, the driving mechanism is a driving surface designed in pairs, and the driving surface includes a rotating driving inclined surface provided on one part, and a driven surface provided on the other part to cooperate with the rotating driving inclined surface. And the driving rotation angle corresponds to the number of limit steps. The structure of the rotary motion driving mechanism in this technical solution is the result of the interaction of two parts that cooperate with each other. The structural positions can be interchanged. Only after mutual cooperation can the rotational direction positioning be completed. .

Preferably, the driving mechanism includes a pin point arranged at the top of the sleeve-shaped latch, and the pin point is located at the top of the pin slope at both sides of the triangle. The sharp corners of the pin are located at the top of the inclined plane of the pin with two waists of the triangle. The pin sharp angle and the pin bevel are an embodiment of the rotary motion driving mechanism of the sleeve-shaped latch.

Preferably, the driving mechanism includes a seat slope arranged on the ground pole base and matched with the top of the sleeve-shaped latch, and the top of the seat slope is provided with a seat point. The seat slope and the seat point are a kind of embodiment of the matching part between the ground pole base and the top of the sleeve-like bolt.

Preferably, the drive mechanism includes two rotational drive slopes arranged on the upper end of the guide post and symmetrically distributed on the circular surface of the guide post. This is an embodiment of the rotary motion drive mechanism. The guide post passes through the hole on the ground pole base and is connected with the ground pole socket through screws. The column slope and the column tip angle are a kind of matching structure where the guide column is located between the ground pole base and the sleeve pin.

As a preference, the upper end of the guide post is provided with two rotational driving pieces symmetrically distributed on the circular surface of the guide post. The spin drive tab is an example of the top of the guide post.

Preferably, the through-hole of the plug base is provided with a limiting shrapnel, and the outer wall of the sleeve pin is provided with a limiting step. When the sleeve pin is retracted into the converter, after the ground pole base is engaged with the rotary motion drive mechanism on the sleeve pin, this part of the limit step is in the same direction as the position of the limit shrapnel. Generally, two limiting steps are arranged symmetrically on the outer wall of the sleeve-shaped bolt, that is, a matching position between a limiting shrapnel and a limiting step is obtained by rotating an angle. The rotary motion drive mechanism on the sleeve pin and the rotary motion drive mechanism on the ground pole base cooperate with each other to make the sleeve pin rotate when the sleeve pin retracts into the converter and ensure that the sleeve pin rotates The limit step on the top is located in the same direction as the limit shrapnel, so that it will be directly restrained after the next action.

Preferably, the lower end of the limiting step is connected to the surface of the cylinder of the sleeve-shaped latch through an inclined plane. To ensure that the sleeve-shaped pin is under the action of a large external force, the limit step and the limit shrapnel are released, and it is smoothly retracted into the converter.

Preferably, the limiting elastic piece is a U-shaped structure, the two symmetrical sides of the U are used as elastic pieces, and the ends of the elastic pieces are turned inside out to form a compound elastic piece. The double shrapnel has a better elastic mode; the double shrapnel is also provided with a limit bump. When the limit shrapnel is installed in the plug base, it is stuck on the pin of the ground socket to prevent it from falling off.

Preferably, the bottom end of the guide post is provided with elastic protrusions. The elastic bumps are used to keep the guide post and the sleeve pin in a conductive state, and the friction force between the guide post and the inner hole of the sleeve pin is reduced by point-to-point electrification.

The ground pole base is located above the plug base. After the plug base drives the L pole pin, N pole pin and sleeve pin out of the housing, the distance between the ground pole base and the plug base is one ground pole. The length of the pin. In actual application, the distance between the two can be taken as small as possible by making full use of the ground base and the inner space of the housing, so as to reduce the volume of the converter.

Preferably, the bottom end of the sleeve-shaped latch is provided with a slot. Slot for screwdriver to rotate with force from outside.

The beneficial effects of the present invention are: the coordination of each part is compact and the structure is reasonable, the action of the ground pole pin is smart and stable, the ground pole pin of the plug part has a substantial grounding function, realizes expansion and contraction, and has strong applicability.

Description of drawings

Fig. 1 is a schematic diagram of an explosion structure of the present invention.

Fig. 2 is a structural schematic diagram of a combined non-working state of the present invention.

Fig. 3 is a structural schematic diagram of an earth base of the present invention.

Fig. 4 is a schematic front view structural diagram of the earth base base in Fig. 3 of the present invention.

Fig. 5 is a schematic structural diagram of an embodiment of an earth base of the present invention.

Fig. 6 is a schematic diagram of the sectional structure along the line A-A of Fig. 5 of the present invention.

Fig. 7 is a schematic structural diagram of a sleeve-shaped latch according to the present invention.

FIG. 8 is a schematic cross-sectional structure diagram of FIG. 7 of the present invention.

Fig. 9 is a structural schematic diagram of an embodiment of a sleeve-shaped pin with sharp corners according to the present invention.

Fig. 10 is a schematic structural view of a limiting shrapnel of the present invention.

Fig. 11 is a structural schematic diagram of another embodiment of a limiting elastic piece of the present invention.

Fig. 12 is a structural schematic diagram of a guide post of the present invention.

Fig. 13 is a structural schematic diagram of an embodiment of a guide post rotation driving piece according to the present invention.

Fig. 14 is a structural schematic diagram of a control key board of the present invention.

Fig. 15 is a schematic structural diagram of a working state with a grounding function according to the present invention.

Fig. 16 is a schematic cross-sectional structure diagram of a three-pole withdrawn state of the present invention.

Fig. 17 is a schematic structural diagram of a plug assembly of the present invention.

Fig. 18 is a schematic structural diagram of a socket assembly of the present invention.

Fig. 19 is a schematic structural diagram of a socket of the present invention.

In the figure: 1. Upper shell, 2. Ground pole base, 201. Seat slope, 202. Connecting column, 203. Seat sharp angle, 204. Sheet drive body, 3. Guide pillar, 301. Column sharp angle, 302 .Elastic bump, 303. Column slope, 304. Rotary drive piece, 4. Control key board, 5. Plug base, 6. Limit shrapnel, 601. Limit bump, 602. Duplex shrapnel, 7. Sleeve Pin, 701. pin sharp angle, 702. pin bevel, 703. notch, 704. limit step, 705. sheet sharp angle, 8. lower shell, 9. socket sleeve, 10. plug assembly, 1001. operating rod, 11. Socket assembly.

detailed description

The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

In this embodiment, a retractable ground pole plug converter, referring to Fig. 1 and Fig. 2, consists of an upper shell 1 and a lower shell 8 that cooperate with each other to form a shell, and the outer surface of the upper shell 1 and the lower shell 8 is respectively provided with poles. Foot socket, lower housing 8 side walls are provided with chute.

In the housing, one end of the upper shell 1 is provided with a ground pole base 2, and the ground pole base 2 is provided with a socket 9 and a ground pole pin, and the corresponding socket 9 is provided with a socket on the shell, and the ground pole pin includes a guide post 3 and the sleeve pin 7 that fits with the guide post through the central hole, as shown in Figure 3, Figure 4 and Figure 18, the plug base 5 is located below the ground base 2, and the plug base 5 is provided with a ground pole The through hole where the plug is matched, the distance between the plug base 5 and the ground base 2 is about the length of one ground pin.

A guide through hole is provided on the plug base 5, and a sleeve pin 7 is housed in the through hole. The upper section of the sleeve pin 7 has a central hole, and the guide post 3 is inserted from the upper end of the sleeve pin 7. Fixed on the ground pole base 2, the bottom end of the guide post 3 is provided with an elastic bump 302, and the sleeve-shaped latch 7 can move up and down along the guide post 3.

Between the top of the sleeve-shaped latch 7 and the ground pole base 2, a drive mechanism is provided to drive the rotation of the sleeve-shaped latch 7, and the sleeve-shaped latch 7 is driven to rotate and reset by the drive mechanism; or the top of the sleeve-shaped latch 7 and the guide post 3 A drive mechanism for driving the sleeve-shaped latch 7 to rotate is provided between the tops, and the sleeve-shaped latch 7 is driven to rotate and reset through the drive mechanism. Statements that include either of the following structures do not limit the two modes.

The position-limiting shrapnel 6 is set at the guide through hole of the plug base 5, and the limit step 704 is set on the outer wall of the sleeve-shaped latch 7, and only two symmetrical positions are provided with limit-limiting steps 704 on the outer wall of the sleeve-shaped latch 7. , the limit step 704 cooperates with the two parallel contact feet of the limit shrapnel 6 . When the sleeve pin 7 is retracted into the converter, after the ground pole base 2 engages with the rotary drive slope on the sleeve pin 7, the position of this part of the limiting step 704 and the position of the limiting shrapnel 6 are always in the same direction.

Specifically, a U-shaped limiting shrapnel 6 is provided in the guide through hole where the plug base 5 cooperates with the sleeve pin 7, and a pair of symmetrical limiting protrusions 601 are provided on the two parallel contact feet of the limiting shrapnel 6, as shown in the figure As shown in 10, the limit bump 601 is interlocked with the limit step 704 on the outer wall of the sleeve pin 7. When the limit shrapnel 6 is installed in the plug base 5, it is fastened to the ground socket through the limit bump 601. on the latch.

Limiting steps 704 are only provided with two symmetrical points on the sleeve-shaped latch 7, and the lower end of the limiting steps 704 is connected with the cylinder surface of the sleeve-shaped latch 7 by an inclined plane, so that the limiting shrapnel 6 passes through the limiting steps 704 smoothly. As shown in Figure 7 and Figure 8, the two parts of the limit step 704 correspond to the drive mechanism that drives the rotary motion of the sleeve pin on the ground pole base 2 and the sleeve pin 7, that is, a limit is obtained by rotating a right angle. The matching position of the bit shrapnel and the limit step. The rotary power driving mechanism on the sleeve-shaped bolt 7 is located at the sharp corner part (driven surface) of its head. Correspondingly, the driving mechanism on the ground pole base 2 that drives the rotational movement of the sleeve-shaped bolt is the guide post 3 or the ground pole. The triangular bevel in the base 2, the two cooperate with each other. When the sleeve pin 7 retracts into the converter through the drive mechanism that drives the sleeve pin to rotate, the sleeve pin 7 automatically rotates, and the limit step 704 on the rotated sleeve pin 7 and the limit shrapnel 6 again in the same direction.

A control key board 4 is installed between the plug base 5 and the ground pole base 2. The structure of the control key board 4 is shown in Figure 14. The plug base 5 is snap-fit connected with the control key board 4. There is an operating rod 1001 protruding from the lower casing 8, as shown in FIG. 17 . The control key board 4 is used to locate the plug base. When the L and N poles are retracted, the plug base 5 and the control key board 4 are combined together by mutual buckling, and a guide bar is provided on the control key board 4 , to ensure that the plug base 5 moves forward.

The composition of the driving mechanism for driving the rotary motion of the sleeve-shaped bolt: the basic structure of the rotary motion driving mechanism is formed by the mutual cooperation of the ground pole base 2 and the sleeve-shaped latch 7. One of the parts is provided with a rotary driving slope, and the other part is provided with a pointed Corner, Intermate Set.

If the sleeve-like pin 7 is pressed, the sloping limit step 704 will bounce off the limit shrapnel 6 under the action of force, and the sleeve-like pin 7 can slide along the guide post 3, thereby retracting into the inside of the plug, forming no The product of the ground pin, so that the same plug assembly can be applied to the socket with the ground jack and the socket without the ground jack.

The following is a further design description of some components.

Embodiment 1 of the ground base 2 and its supporting parts, as shown in Figures 3 and 4, a seat slope 201 is provided on the ground base 2 in cooperation with the top of the sleeve pin 7, and a seat slope 201 is provided on the top of the seat slope 201. Sharp corners 203, and connecting posts 202 are provided at the two corners for fixing with the lower shell 8. Correspondingly, the upper end of the guide post 3 is provided with two drive mechanisms symmetrically distributed on the circular surface of the guide post to drive the rotational movement of the sleeve-shaped latch. As shown in FIG. The lower end of the slope 303 is a column tip angle 301 . As shown in Fig. 7 and Fig. 8, the sleeve-shaped latch 7 is provided with a slot 703 at the bottom of the sleeve-shaped latch 7, and a pin point 701 is provided at the top, and the pin point 701 is located at the top of the pin slope 702 at two waists of a triangle.

The second embodiment of the earth base 2 and its supporting parts, as shown in Figure 5 and Figure 6, a sheet-shaped driving body 204 is arranged on the earth base 2 and the top of the sleeve-shaped latch 7, and is mutually connected with a rectangular sheet structure. Cooperate to form a rotating drive surface. Correspondingly, the top of the sleeve-shaped latch 7 is provided with a sharp angle 705, and the upper end of the guide post 3 is provided with two rotational drive surfaces symmetrically distributed on the circular surface of the guide post. As shown in Figure 13, the rotational drive surfaces are distributed on the guide post Rotation of the round surface drives the piece 304 .

Fig. 10 is a structural schematic diagram of an embodiment of the limiting shrapnel 6, which is U-shaped, and the U-shaped connecting part can be bent in various ways to increase the structural strength, and limiting protrusions 601 are provided on the inner sides of the U-shaped symmetrical sides.

Fig. 11 is a structural diagram of another embodiment of the limiting shrapnel 6, which is U-shaped, and the two symmetrical sides are used as elastic pieces, and the ends of the elastic pieces are turned inward to form two parallel surfaces, forming a compound shrapnel 602. The limited bump 601 ensures the service life of the shrapnel without failure.

Use method 1: The plug base 5 slides out from the product (referred to as the converter) through the operating rod 1001, and the pole feet are exposed and fixed in place. When the ground pole pin is not needed, rotate the sleeve pin 7 by hand at a certain angle ( The angle range is 45°～135°), so that the limit step 704 and the limit shrapnel 6 of the sleeve pin 7 are invalidated, and the sleeve pin 7 is gently pressed, which is a two-pole plug converter, which is suitable for two-pole sockets in corresponding countries. When the sleeve-shaped latch 7 is pressed down, the sharp corner of the head of the sleeve-shaped latch 7 contacts the triangular inclined surface on the guide post 3 or the ground pole base 2, and the sleeve-shaped latch 7 slides and rotates on the inclined surface after being stressed. Until the limit step 704 on the sleeve pin 7 is in the same direction as the limit shrapnel 6, the rotation reset of the sleeve pin 7 is realized, and when the plug base 5 is pushed back into the product, the limit step 704 is buckled with the limit shrapnel 6 again , when the plug base 5 is slid out of the converter next time, the limit step 704 of the sleeve pin 7 will be caught by the limit shrapnel 6, and the converter can have a ground pin without the user operating again, see Figure 15, Figure 16, so reciprocating use.

Use method 2: The plug base 5 slides out from the converter through the operating rod 1001, and the pole feet are exposed and fixed in place. When the ground pole pin is not needed, press the sleeve-shaped pin 7, and the limit step 704 with a slope is in place. Under the action of force, the limit shrapnel is ejected, and the sleeve-like pin 7 can slide along the guide post 3, thereby retracting into the inside of the converter, forming a plug without a ground pole pin. When the plug base 5 is pushed back into the converter, the limit step 704 is locked with the limit shrapnel 6 again. It is stuck by the limit shrapnel 6, and it can be provided with a ground pin without further operation by the user. So back and forth.

Furthermore, this product is used as a multi-country converter, and the interior of the housing is designed into two spaces. The upper space of the housing is provided with a socket assembly 11, and the lower space is provided with a plurality of plug assemblies 10 of different national standards. Wherein, the socket assembly 11 includes a socket socket and a socket socket 9 arranged in the socket socket, as shown in Figures 18 and 19, the shell is provided with a socket corresponding to the socket socket 9 for insertion of a plug. The plug assembly 10 includes a multi-purpose plug base, and the multi-purpose plug base is fixed with L, N pole pins, and an operating rod 1001. As shown in FIG. The ground pin can protrude from the inside, and the operating rod 1001 is used to move the base of the multi-purpose plug so that it can drive the pin to protrude from the inside. For the ground pole base of the multi-country converter, it can be designed independently, or the socket socket can be used as the ground pole base.

The first method of using the multi-country converter: the plug assembly 10 is completely accommodated in the lower space inside the shell at the beginning, and when it needs to be used, the plug assembly 10 is moved downward by moving the operating lever 1001, so that the ground pole pin protrudes from the inside, and in the After stretching out, it has L, N pole and ground pole pins at the same time. When the ground pole pin is not needed, rotate the ground pole pin by hand at an angle (the angle range is 45°～135°), so that the limit step and the limit shrapnel of the ground pole pin will fail, and gently press the ground pole pin, then When it is a two-pole plug, it is suitable for two-pole sockets in the corresponding countries. When the ground pole pin is pressed, the sharp corner of the ground pole pin head is in contact with the triangular slope on the guide post or base, and the ground pole pin slides on the slope after being stressed until it reaches the limit step on the ground pole pin Consistent with the direction of the limit shrapnel, the rotation reset of the ground pin is realized. If the user needs to use the plug with the ground pin, only need to move the operating lever 1001 to retract the plug assembly into the inner space of the shell, so that the limit step and limit The position of the elastic plate is limited, and then the operating lever 1001 is pushed down again to push the plug assembly, so that the pin can protrude from the inside, so that the plug assembly can have L, N pole and ground pins at the same time.

The second method of using the multi-country converter: the plug assembly 10 is completely accommodated in the lower space inside the casing at the beginning, and when it is needed to use, the plug assembly is driven downward by moving the operating lever 1001, so that the electrode pin can be extended from the inside, and when it is extended After going out, it has L, N pole and ground pole pins at the same time. When the ground pole pin is not needed, press the ground pole pin so that the limit step of the ground pole pin will stretch the limit shrapnel, the limit will fail, and the ground pole pin will retract into the product. At this time, it is a two-pole plug, which is suitable for the corresponding country. Two-pole socket. If the user needs to use a plug with a ground pin, he only needs to move the operating lever 1001 to retract the plug assembly into the inner space of the shell, so that the limit step and the limit shrapnel are fastened and connected, and then move the operating lever again to push the plug downward Assembly, so that the pin can protrude from the inside, so that the plug assembly can have L, N pole and ground pole pins at the same time.

The above-mentioned embodiment is an illustration of the present invention, not a limitation of the present invention. Any structure and method after simple transformation of the present invention belong to the protection scope of the present invention.

Claims (14)

1. A retractable ground pole plug converter, comprising a housing, a socket (9), a plug base (5) located in the housing, and a ground pole base (2), characterized in that the ground pole The ground pole pin is provided on the base, and the ground pole base is located above the plug base; the L pole pin and the N pole pin are arranged on the plug base, and there are through holes matched with the ground pole pin; The ground pole pin includes a sleeve pin (7), and the upper end and the inner hole of the sleeve pin are equipped with a guide post (3). The column slides up and down and passes through the through hole; the plug base is slidably arranged in the housing, and the sliding of the plug base drives the L-pole pin, N-pole pin and sleeve pin to protrude out of the shell. 2. A retractable earth pole plug converter according to claim 1, characterized in that: A drive mechanism is provided between the top of the sleeve pin and the ground base to drive the sleeve pin to rotate, and the drive mechanism drives the sleeve pin to rotate and reset; or A drive mechanism for driving the sleeve-shaped latch to rotate is provided between the top of the sleeve-shaped latch and the top of the guide post, and the sleeve-shaped latch is driven to rotate and reset by the drive mechanism. 3. A retractable earth pole plug converter according to claim 2, characterized in that, the through hole of the plug base is provided with a limiting shrapnel (6), and some positions on the outer wall of the sleeve-shaped plug A limit step (704) is provided, and when the sleeve pin (7) is retracted into the converter, the drive mechanism drives the sleeve pin to rotate and reset, the limit step and the limit The position of the shrapnel is in the same direction. 4. A retractable earth pole plug converter according to claim 2, characterized in that the driving mechanism is a driving surface designed in pairs, and the driving surface includes a rotary driving slope provided on one of the parts, And the driven surface provided on another part to cooperate with the rotary drive slope. 5. A retractable earth pole plug converter according to any one of claims 2 to 4, characterized in that the drive mechanism includes a pin point (701 ), the sharp corner of the pin is located at the top of the pin slope (702) with two waists of the triangle. 6. A retractable ground pole pin converter according to claim 5, characterized in that the drive mechanism includes a seat slope arranged on the ground pole base (2) and matched with the top of the sleeve-like pin (7) (201), the top of the seat slope is provided with a seat sharp angle (203). 7. A retractable earth pole plug converter according to any one of claims 2 to 4, characterized in that the drive mechanism includes two symmetrically distributed on the guide post circle arranged at the upper end of the guide post (3). The rotary drive slope on the surface includes a column slope (303), and the lower end of the column slope is a column tip angle (301). 8. A retractable earth pole pin converter according to claim 7, characterized in that the upper end of the guide post (3) is provided with two rotating drive pieces (304) symmetrically distributed on the circular surface of the guide post . 9. A retractable earth pole plug converter according to claim 1, characterized in that, the through hole of the plug base is provided with a limiting shrapnel (6), and on the outer wall of the sleeve-like plug (7) A limit step (704) is provided. 10. A retractable earth pole plug converter according to claim 9, characterized in that the lower end of the limiting step (704) is connected to the cylindrical surface of the sleeve-shaped plug (7) through an inclined plane. 11. A retractable earth pole plug converter according to claim 3 or 9, characterized in that the limiting shrapnel (6) is a U-shaped structure, and the two symmetrical sides of the U-shape are used as elastic pieces, The ends of the elastic sheets are turned inwardly to form a compound elastic sheet (602). 12. A retractable earth pole plug converter according to claim 1 or 2 or 3 or 4 or 9 or 10, characterized in that the bottom end of the guide post (3) is provided with elastic bumps (302 ). 13. A retractable ground pole plug converter according to claim 1 or 2 or 3 or 4 or 9 or 10, characterized in that the ground pole base (2) is located on the plug base (5) After the plug base drives the L pole pin, N pole pin and sleeve pin out of the housing, the distance between the ground pole base and the plug base is the length of one ground pole pin. 14. A retractable earth pole pin converter according to claim 1 or 2 or 3 or 4 or 9 or 10, characterized in that the bottom end of the sleeve-shaped pin (7) is provided with a slot (703 ).