CN220172542U - Multi-standard conversion plug - Google Patents

Abstract

The utility model relates to the technical field of power plugs, in particular to a multi-standard conversion plug which comprises a shell and an upper cover, wherein the upper cover is arranged on the shell and is provided with a power connection jack and a grounding jack, pins electrically connected with the power connection jack and the grounding jack are arranged outside the shell, grounding contacts are arranged on protrusions of the upper cover, and the grounding contacts are elastically arranged and are electrically connected with the grounding jack. According to the utility model, when the multi-standard conversion plug is plugged into the de-standard plug, the grounding level of the de-standard plug can be effectively grounded, so that the power utilization of equipment is safer, the pressure intensity between the grounding contact and the de-standard plug grounding level is increased by the elastically arranged grounding contact, and the stable and effective grounding is ensured.

Description

Multi-standard conversion plug

Technical Field

The utility model relates to the technical field of power plugs, in particular to a multi-standard conversion plug.

Background

With the continuous increase of globalization degree of the world, the use of imported electric appliances is more and more popular, and as a plurality of countries and regions in the world respectively adopt sockets with different standards, the plugs corresponding to the electric appliances on the electric appliances are also different standards of the respective countries and regions, the imported electric appliances may not directly use the sockets of the home country, and a power supply conversion head is needed to solve the problem. Generally, five kinds of plug standards are internationally used, namely, national standard plug, american standard plug, english standard plug, european standard plug and south Africa standard plug. In addition, the Debiao plug has a wide application range, the grounding level of the Debiao plug is positioned at two sides of the plug, the grounding is realized by matching with the grounding reed protruding out of the surface of the socket on the Debiao socket, and the structure is very special.

In order to be compatible with various plug standards, the conventional power conversion plug integrates jacks of the various plug standards on a shell, pins are arranged on the other surface of the shell, and the inside of the shell is electrically connected with the pins through conductive pieces at the positions of the jacks.

The inventor finds that although the power conversion plugs can be plugged into the de-standard plug, the power conversion plugs have no grounding piece suitable for the de-standard plug, and have potential safety hazards.

Disclosure of Invention

In order to ensure that the multi-standard conversion plug is compatible with the German standard plug and meets the requirement of grounding, and electric equipment is used more safely, the utility model provides the multi-standard conversion plug.

The utility model provides a multi-standard conversion plug, which adopts the following technical scheme:

the utility model provides a multi-standard conversion plug, includes shell and upper cover, the upper cover install in the shell, the upper cover is equipped with electric jack and ground connection jack, electric jack with the inside conductive part that is provided with of ground connection jack, the shell outside be provided with the pin that conductive part electricity is connected, the upper cover arch is provided with ground contact, ground contact is elasticity setting and is connected with the conductive part electricity of ground connection jack.

Through adopting above-mentioned technical scheme, the grounding contact that the upper cover protruding set up can butt the earthing level of de standard plug, and the grounding contact is connected with ground jack, the pin electricity in proper order, has realized the function that the earthing level was earthed when the de standard plug was pegged graft to the multi-standard changeover plug, has made things convenient for the use of de standard plug equipment, and the pressure of its and the time of being connected of de standard plug earthing level is increased to the grounding contact that elasticity set up, ensures that the ground connection is stable effective.

Optionally, the upper cover is concave towards the inside of the shell to form a plug groove, the ground contact is arranged on the side wall of the plug groove, and the ground contact protrudes out of the side wall surface of the plug groove.

By adopting the technical scheme, the grounding contact positioned on the side wall of the plug groove is abutted with the grounding electrode on the side surface of the German standard plug, and the grounding electrode on the side surface of the German standard plug has larger area compared with the grounding electrode abutted with the bottom surface of the German standard plug, so that the grounding electrode and the grounding contact can be effectively prevented from being disconnected due to loosening of the plug; the sinking design of the plug groove can also effectively prevent fingers from holding the plug before passing, so that electric shock caused by mistakenly touching metal pins on the plug is avoided.

Optionally, the ground jack comprises a ground spring, the ground spring extends to the side wall surface of the plug groove, and the ground contact is formed by bending the end of the ground spring.

By adopting the technical scheme, the grounding reed and the grounding contact are integrally manufactured, so that the structure is simplified, and the assembly is convenient to install and fix.

Optionally, the ground contact is in a triangular bending structure.

By adopting the technical scheme, the triangular structure of the grounding contact and the grounding level of the De-standard plug form line contact, the pressure at the contact position is still higher even if the pressure is not large, the contact resistance is smaller, the self-cleaning effect of the contact is strong, the effective grounding of electric equipment is ensured, and the electricity safety is ensured.

Optionally, the side wall of the plug groove is provided with a caulking groove for the ground reed and the ground contact to be embedded, the ground contact protrudes out of the caulking groove, and the ground reed and the caulking groove are arranged in a clearance.

Through adopting above-mentioned technical scheme, the caulking groove can effectively block finger and ground reed contact, avoids when equipment electric leakage or ground wire disconnection mistake ground reed and leads to the electric shock danger. The grounding reed is arranged in a gap with the caulking groove, so that a movable space is reserved for the grounding reed.

Optionally, the included angle between the grounding reed in the caulking groove and the bottom surface of the plug groove is smaller than 90 degrees.

Through adopting above-mentioned technical scheme, the ground contact inclines to plug groove central point puts, increases the pressure between with the earth electrode butt time of de standard plug, improves the ground stability, also makes the plug grafting more firm be difficult for droing.

Optionally, the same ground contact is disposed on the opposite side wall of the plug slot.

By adopting the technical scheme, the grounding contact is abutted against the grounding level on the side face of the Debiao plug from two directions, so that the effective grounding of electric equipment is further ensured, and the electricity utilization safety is ensured.

Optionally, a protection door for closing the power connection jack is arranged below the upper cover, and the protection door comprises a pressing plate rotationally connected with the upper cover and an elastic piece for keeping the pressing plate to close the jack.

By adopting the technical scheme, when the metal pin of the plug of the electric equipment is inserted into the electric jack, the pressing plate is pushed open by the extrusion or stretching elastic piece to be communicated with the circuit; when the metal pin of the plug is pulled out of the jack, the pressing plate of the protective door resets along with the elastic piece to shield the power jack again, so that danger of mistakenly touching the power jack by people, animals and the like is avoided.

Optionally, the clamp plate is two leaf oar shape structures, just the clamp plate just to connect the part of electric jack and be the inclined plane, the elastic component is the spring, the spring is on a parallel with the upper cover supports to locate the thicker one side of paddle of clamp plate.

The pressing plate is of a two-blade paddle-shaped structure and rotates on a plane parallel to the upper cover, the part, right to the power connection jack, of the pressing plate is an inclined plane, the elastic piece is a spring, and the spring is propped against one thicker side of the blade of the pressing plate.

By adopting the technical scheme, when the metal pin of the electric equipment plug is inserted into the electric jack, the metal pin presses the inclined surface of the pressing plate downwards, the pressing plate is driven to rotate to the thicker side of the blade to press the spring, and the metal pin pushes up the pressing plate to be communicated with the circuit; when the metal pin of the plug is pulled out of the jack, the pressing plate of the protective door is pushed back to the original position by the spring to shield the power-on jack. The pressing plate rotates parallel to the plane of the upper cover, so that the inner space of the shell is saved compared with a vertically-turnover structure.

Optionally, a switch is disposed on the outer side of the housing, the conductive member of the power connection jack is a power connection plug bush, and the switch is connected in series with the power connection plug bush.

Through adopting above-mentioned technical scheme, when not using the consumer for a long time, in order to protect consumer safety, close the switch on the shell and can break off the equipment power, need not to pull out the plug.

In summary, the utility model has the following beneficial effects:

1. the structure design of the multi-standard conversion plug realizes the function that the grounding electrode of the de-standard plug can be stably and effectively grounded when the de-standard plug is inserted, and ensures the electricity safety of the inserted de-standard plug equipment;

2. the safety of the multi-standard conversion plug is improved by arranging the protection door and the switch.

Drawings

FIG. 1 is a schematic overall structure of an embodiment;

FIG. 2 is a schematic structural view of an internal conductive member of an embodiment;

FIG. 3 is a schematic view of the internal structure of the housing of the embodiment;

FIG. 4 is a schematic view of an embodiment of a protective door closed state;

fig. 5 is a schematic view showing an open state of the protection door according to the embodiment.

100, a housing; 110. pins; 120. a switch; 130. a fixed structure; 200. an upper cover; 210. a power connection jack; 211. a power connection plug bush; 220. a ground jack; 221. a grounding plug bush; 222. a grounding reed; 223. a ground contact; 230. a plug slot; 231. a caulking groove; 240. a limit structure; 300. a protective door; 310. a pressing plate; 320. and (3) a spring.

Detailed Description

The present utility model will be described in further detail with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Examples: the description will be given by taking a multi-standard conversion plug with the function of converting a de-standard plug to an meaning-standard plug as an example.

A multi-standard conversion plug, as shown in fig. 1, includes a housing 100 and an upper cover 200.

In the embodiment, taking a cubic shell 100 as an example, the top surface of the shell 100 is left blank, the bottom surface of the shell 100 is provided with pins 110 of the logo plug, L-stage metal pins, E-stage metal pins and N-stage metal pins of the pins 110 are sequentially arranged in parallel at equal intervals, and the E-stage metal pins are positioned at the center of the bottom surface of the shell 100.

The upper cover 200 is clamped on the top surface of the housing 100, and is recessed towards the inside of the housing 100 to form a plug slot 230, the bottom surface of the plug slot 230 is provided with a power connection jack 210 extending to the bottom surface of the housing 100 corresponding to the L-stage metal pin and the N-stage metal pin of the housing 100, and a grounding jack 220 corresponding to the E-stage metal pin, and the two power connection jacks 210 also extend towards the direction of the grounding jack 220 respectively so as to match the distance between the two power connection metal pins of the de-standard plug.

Referring to fig. 2, the electrical connection jack 210 and the grounding jack 220 are respectively provided with an elastic electrical connection plug 211 and a grounding plug 221, and the two electrical connection plug 211 are respectively electrically connected with the L-level metal pin and the N-level metal pin, and the grounding plug 221 is electrically connected with the E-level metal pin. The electrical plug 211 and the grounding plug 221 are fixed by the fixing structure 130 in threaded connection with the upper cover 200, and when the metal pins of the logo plug are inserted into the electrical plug holes 210 and the grounding plug holes 220, the metal pins are respectively abutted against the electrical plug 211 and the grounding plug 221 to communicate with a circuit.

Two caulking grooves 231 taking the grounding jack 220 as a symmetry axis are formed in the side wall of the plug groove 230, the connecting line of the two caulking grooves 231 is perpendicular to the connecting line of the two electric jacks 210, and the caulking grooves 231 are communicated with the inside of the shell 100. The grounding spring pieces 222 extend from the grounding plug bush 221 to the positions of the two caulking grooves 231, the two grounding spring pieces 222 are bent to be of an L-shaped structure, the bent vertical section extends into the caulking grooves 231, and the ends, far away from the grounding plug bush 221, of the two grounding spring pieces 222 are respectively bent to each other to form two triangular grounding contacts 223. The ground plug 221, the ground reed 222, and the ground contact 223 are integrally formed.

The included angle of the L-shaped bending positions of the grounding reeds 222 is smaller than 90 degrees, so that the vertical sections of the two grounding reeds 222 are of opposite inclined structures. The ground contact 223 protrudes from the side wall of the plug slot 230, and the ground spring 222 and the caulking groove 231 are kept with a gap, so as to be elastically movable under pressure. When the de-standard plug is docked, the ground level on the side of the de-standard plug abuts the ground contact 223, forming a line contact with the triangular side edges of the ground contact 223.

As shown in fig. 3, a protection door 300 is further provided between the upper cover 200 and the power receiving socket 211, and includes a pressing plate 310 and a spring 320.

The limiting structure 240 of the protective door 300 is clamped between the upper cover 200 and the fixing structure 130, and the pressing plate 310 and the spring 320 are both arranged in the limiting structure 240 in parallel with the upper cover 200. The spacing structure 240 is left blank in the position of the power jack 210 and the ground jack 220. The pressing plate 310 is of a two-blade paddle structure, the center of the pressing plate 310 is sleeved on a rotating shaft formed outside the grounding jack 220 of the limiting structure 240, the pressing plate 310 can rotate around the rotating shaft in the horizontal direction, and the thicker side of one blade abuts against one end of the spring 320. Referring to fig. 4, in a state that the metal pins of the plug are not inserted, the pressing plate 310 is pushed to the edge of the limiting structure 240 by the springs 320, and two paddles of the pressing plate 310 are respectively positioned right above the two power connection plug sleeves 211 to block the power connection plug holes 210; referring to fig. 5, when the metal pins of the plug are inserted into the power receiving holes 210, the pressing plate 310 is pressed by the metal pins, and the pressing plate 310 rotates in the horizontal direction toward the thicker side of the blade due to the constraint of the limiting structure 240 and presses the springs 320.

When the multi-standard conversion plug is assembled, the grounding plug bush 221 and the electric plug bush 211 are placed inside the fixed structure 130; then the limiting structure 240 is placed on the upper end surface of the fixed structure 130, and the contact surfaces of the limiting structure and the fixed structure are provided with mutually meshed grooves to realize positioning; after the pressing plate 310 and the spring 320 in the limiting structure 240 are arranged, the capped upper cover 200 is in threaded connection with the fixing structure 130, and the limiting structure 240 is clamped between the pressing plate and the spring. The fixing structure 130, the limiting structure 240 and the upper cover 200 are integrally formed and directly clamped and fixed with the housing 100.

The side of the housing 100 is further provided with a switch 120, and the l-stage metal pins, the switch 120, and a power socket 211 of the power socket 210 are electrically connected in sequence.

Working principle: in the idle state of the multi-standard conversion plug, the pressing plate 310 is pushed by the elastic force of the spring 320 to be kept right above the power receiving plug sleeve 211, so as to block the power receiving jack 210.

Pins 110 of the multi-standard conversion plug are first plugged into the power outlet when the multi-standard conversion plug is used.

When the logo plug is plugged, the metal pins of the logo plug are correspondingly plugged into the power receiving jack 210 and the grounding jack 220 of the multi-standard conversion plug. The metal feet contact the pressing plate 310 of the protective door 300, and the pressing plate 310 rotates to the thicker side of the blade under the constraint of the limiting structure 240 of the protective door 300 because the pressing surface of the pressing plate 310 is an inclined surface, and the spring 320 is compressed and contracted. After the metal pins are respectively abutted against the electric plug bush 211 and the grounding plug bush 221, the plug is inserted. The switch 120 on the side wall of the housing 100 is pressed to close the path between the L-stage metal pin and the power plug 211, and the power supply is turned on.

When the plug is pulled out, the pressing plate 310 of the protection door 300 is pushed back to the position right above the power receiving socket 211 by the elastic force of the spring 320, and the power receiving jack 210 is blocked.

When the De-standard plug is plugged, the grounding electrode of the De-standard plug is not a metal pin arranged between the L level and the N level, but a metal sheet embedded with the side surface of the plug is different from the plug of the De-standard plug. The two elastically arranged grounding contacts 223 are respectively abutted against the metal sheet grounding electrode on the side face of the German standard plug from two sides and form line contact with the triangular side edges of the grounding contacts 223, so that the electric appliance for the German standard plug can be stably and effectively grounded.

When the plugged-in electrical appliance is not used for a long time, the switch 120 is turned off to protect the electrical appliance without pulling out the plug.

The embodiments of the present utility model are all preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (10)

1. The utility model provides a multi-standard changeover plug, includes shell (100) and upper cover (200), upper cover (200) install in shell (100), upper cover (200) are equipped with electric jack (210) and ground connection jack (220), electric jack (210) with ground connection jack (220) are inside to be provided with electrically conductive piece, shell (100) outside be provided with electrically conductive piece electricity connection's pin (110), characterized by: the upper cover (200) is convexly provided with a grounding contact (223), and the grounding contact (223) is elastically arranged and is electrically connected with a conductive piece of the grounding jack (220).

2. The multi-standard conversion plug of claim 1, wherein: the upper cover (200) is recessed towards the inside of the shell (100) to form a plug groove (230), the grounding contact (223) is arranged on the side wall of the plug groove (230), and the grounding contact (223) protrudes out of the side wall surface of the plug groove (230).

3. The multi-standard conversion plug of claim 2, wherein: the conductive piece of the grounding jack (220) is a grounding reed (222), the grounding reed (222) body extends upwards to the side wall surface of the plug groove (230), and the grounding contact (223) is formed by bending the end part of the grounding reed (222).

4. A multi-standard conversion plug according to claim 3, characterized in that: the grounding contact (223) is of a triangular bending structure.

5. The multi-standard conversion plug of claim 4, wherein: the side wall of the plug groove (230) is provided with a caulking groove (231) for the grounding reed (222) to be embedded, the grounding contact (223) protrudes out of the caulking groove (231), and the grounding reed (222) and the caulking groove (231) are arranged in a clearance mode.

6. The multi-standard conversion plug of claim 5, wherein: the included angle between the grounding reed (222) and the bottom surface of the plug groove (230) is smaller than 90 degrees.

7. The multi-standard conversion plug of claim 6, wherein: the same ground contact (223) is provided on the side wall of the plug slot (230) opposite to the ground contact (223).

8. The multi-standard conversion plug of claim 1, wherein: a protection door (300) for closing the power connection jack (210) is arranged below the upper cover (200), and the protection door (300) comprises a pressing plate (310) rotatably connected with the upper cover (200) and an elastic piece for keeping the pressing plate (310) to close the jack.

9. The multi-standard conversion plug of claim 8, wherein: the pressing plate (310) is of a two-blade paddle-shaped structure and rotates on a plane parallel to the upper cover (200), the portion, right to the power receiving jack (210), of the pressing plate (310) is an inclined plane, the elastic piece is a spring (320), and the spring (320) is propped against one thicker side of a blade of the pressing plate (310).

10. The multi-standard conversion plug of claim 1, wherein: the shell (100) is provided with a switch (120) on the outer side surface, the conductive piece of the power connection jack (210) is a power connection plug bush (211), and the switch (120) is connected in series with the power connection plug bush (211).