A surface contact type strong electric plug connector and a safety socket using the plug connector

Abstract

The present invention discloses a surface contact type high-voltage plug connector, including a plug connector, characterized in that the plug connector is a surface contact type plug connector, which is made of an elastic conductive metal sheet rolled into a hollow columnar plug connector, and the plug connector is a flat plug connector that is matched with a flat plug; the flat plug connector is in the shape of a flat square, and the middle part of the square is two side surfaces protruding inward to form a flat plug contact part that contacts the plug, and the metal sheet of the flat plug contact part is planar; the height of the flat plug contact part is 1.0-6.0mm. This surface contact type high-voltage plug connector, because the height of the contact part that contacts the plug is relatively high, the contact with the plug is of surface contact type, compared with the point contact type of the prior art, the contact surface of the plug is increased, the force clamped by the contact part is increased, the connection is firm and compact, the generation of electric sparks is eliminated, the safety is high, and the cost is low.

Description

Technical Field

[0001] The invention relates to an electric connecting device and a connecting apparatus, in particular to a strong electric plug connector suitable for use with plugs of various electrical products and a safety socket using the plug connector. Background Art

[0002] The contact pieces of the commonly used traditional high-voltage sockets are usually composed of two clips in the shape of an eight or a figure four. The contact pieces of the plug and the socket are usually connected by touching. When the plug and the socket are connected to each other, the working condition of the contact pieces of the plug connector is point contact, point contact or intermittent point contact, and sometimes even completely disconnected and without power. On the one hand, the contact surface of the point contact is small, the contact resistance is large, and the heat generated during operation is high, which causes the elasticity of the contact pieces of the plug connector to decrease. Repeated use will cause poor contact, further increase the contact resistance, and increase the heat generation accordingly, resulting in a vicious cycle of reduced working performance; on the other hand, when the contact point resistance increases to a level greater than the air resistance between the surrounding conductive sheets, electric sparks will be generated, electro-corrosion of the contact pieces of the plug connector will occur, new poor contact will occur, working performance will be reduced, and a vicious cycle will be generated. All of these will not only affect the normal operation of electrical equipment, but will also burn out the socket plug, damage electrical equipment, and even cause fires and explosions of electrical equipment, with extremely poor safety. Summary of the invention

[0003] The purpose of the present invention is to overcome and improve the defects of the above-mentioned prior art and to provide a surface-contact high-voltage plug connector and a safety socket using the plug connector. The high-voltage plug connector and the power socket using the plug connector have reliable connection and firm contact when plugged with a plug, and will not generate contact sparks, thereby having high safety.

[0004] The technical solution for achieving the purpose of the present invention is as follows:

[0005] A surface contact type high-voltage plug connector, comprising a plug connector, which is different from the prior art in that the plug connector is a surface contact type plug connector, which is made of an elastic conductive metal sheet rolled into a hollow columnar plug connector, and the plug connector is a flat plug connector that is mated with a flat plug;

[0006] The flat plug connector is in the shape of a flat cube, the middle part of the cube is a flat plug contact part with two side surfaces protruding inwards to contact the plug, the metal sheet of the flat plug contact part is planar, and the height of the flat plug contact part is 1.0-6.0mm.

[0007] Furthermore, the metal sheet at the plug-in interface end of the flat plug connector is vertical, and the side edges of the metal sheet at the plug-in interface end are connected as one.

[0008] Furthermore, one of the metal sheets or both metal sheets of the flat plug contact portion is provided with a longitudinal elongated through hole.

[0009] Another technical solution under the same idea is:

[0010] A surface contact type high-voltage plug connector, comprising a plug connector, which is different from the prior art in that the plug connector is a surface contact type plug connector, which is made of an elastic conductive metal sheet rolled into a hollow cylindrical plug connector, and the plug connector is a round plug connector that is mated with a round plug;

[0011] The round plug connector is cylindrical in shape and is provided with a longitudinal long notch. The open end of the long notch is the plug connection end. The middle part of the round plug connector protrudes inward to form a round plug contact part where the round plug contacts the plug. The metal sheet of the round plug contact part is cylindrical. At least two long notches divide the plug connection end and the round plug contact part into at least two petals. The height of the round plug contact part is 1.0-6.0mm.

[0012] Furthermore, the number of the elongated notches is 2-6.

[0013] Another technical solution under the same idea is:

[0014] A surface contact type high-voltage plug connector, comprising a plug connector, which is different from the prior art in that the plug connector is a surface contact type plug connector, which is made of an elastic conductive metal sheet rolled into a hollow columnar plug connector, and the plug connector is a hybrid plug connector that can be matched with a flat plug and a round plug;

[0015] The flat plug connection part of the hybrid plug connector is composed of one side of the flat metal sheet end portion of the metal sheet and the flat plug metal sheet, and the round plug connection part is composed of the other side of the metal sheet end portion and the round plug metal sheet, and the metal sheet end portion is located between the flat plug metal sheet and the round plug metal sheet;

[0016] The middle part of the end of the metal sheet protrudes toward the flat plug metal sheet to form one side of the flat plug contact part where the flat plug contacts the plug, and the middle part of the flat plug metal sheet protrudes toward the end of the metal sheet to form another side of the flat plug contact part where the flat plug contacts the plug; the metal sheet of the flat plug contact part is planar;

[0017] The round plug metal sheet is cylindrical, and the middle part thereof protrudes toward the end of the metal sheet to form a round plug contact part where the round plug contacts the plug; the height of the flat plug contact part and the round plug contact part is 1.0-6.0 mm.

[0018] Furthermore, the flat metal sheet of the hybrid plug connector is provided with a longitudinal elongated through hole.

[0019] Furthermore, the round plug metal sheet of the hybrid plug connector is provided with a longitudinal elongated notch, the open end of the elongated notch is a plug connection end, and at least two elongated notches divide the plug connection end and the round plug contact portion of the round plug metal sheet into at least two petals.

[0020] Another technical solution under the same idea is:

[0021] A surface contact type high-voltage plug connector, comprising a plug connector, which is different from the prior art in that the plug connector is a surface contact type plug connector, which is made of an elastic conductive metal sheet rolled into two hollow cylindrical plug connectors, the two plug connectors are respectively located at the two ends of the metal sheet, one of the plug connectors is a flat plug connector that is matched with a flat plug, and the other plug connector is a mixed plug connector that is matched with a flat plug and a round plug;

[0022] The flat plug connector is in the shape of a flat square, and the middle part of the square is a flat plug contact part with two side surfaces protruding inwards to contact the plug, and the metal sheet of the flat plug contact part is in the shape of a plane; the height of the flat plug contact part is 1.0-6.0mm;

[0023] The flat plug connection part of the hybrid plug connector is composed of one side of the flat metal sheet end portion of the metal sheet and the flat plug metal sheet, and the round plug connection part is composed of the other side of the metal sheet end portion and the round plug metal sheet, and the metal sheet end portion is located between the flat plug metal sheet and the round plug metal sheet;

[0024] The middle part of the end of the metal sheet protrudes toward the flat plug metal sheet to form one side of the flat plug contact part where the flat plug contacts the plug, and the middle part of the flat plug metal sheet protrudes toward the end of the metal sheet to form another side of the flat plug contact part where the flat plug contacts the plug; the metal sheet of the flat plug contact part is planar;

[0025] The round plug metal sheet is cylindrical, and the middle part thereof protrudes toward the end of the metal sheet to form a round plug contact part where the round plug contacts the plug; the height of the flat plug contact part and the round plug contact part is 1.0-6.0 mm.

[0026] Furthermore, the metal sheet at the plug-in interface end of the flat plug connector is vertical, and the side edges of the metal sheet at the plug-in interface end are connected as one.

[0027] Furthermore, one of the metal sheets or both metal sheets of the flat plug contact portion is provided with a longitudinal elongated through hole.

[0028] Furthermore, the flat metal sheet of the contact portion of the hybrid plug connector is provided with a longitudinal elongated through hole.

[0029] Furthermore, the round plug metal sheet of the hybrid plug connector is provided with a longitudinal elongated notch, the open end of the elongated notch is a plug connection end, and at least two elongated notches divide the plug connection end and the round plug contact portion of the round plug metal sheet into at least three petals.

[0030] The safety socket using the above-mentioned surface contact type high-voltage plug connector comprises a socket body and a plug connector, wherein the plug connector is the above-mentioned surface contact type high-voltage plug connector.

[0031] This surface-contact high-voltage plug connector has a contact portion with a height of 1.0-6.0 mm that contacts the plug, and is surface-contact type. Compared with the point-contact type of connection in the prior art, the contact surface of the plug is increased, the clamping force of the contact portion is increased, the connection is firm and compact, the generation of electric sparks is eliminated, the safety is high, and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 , Figure 2 This is a schematic diagram of the flat plug connector structure in Example 1;

[0033] Figure 3 This is a schematic diagram of the expansion of the flat plug connector in Example 1;

[0034] Figure 4 A schematic diagram of the structure of a socket of a flat plug connector according to Embodiment 1;

[0035] Figure 5 , Figure 6 This is a schematic diagram of the round plug connector structure in Example 2;

[0036] Figure 7 This is a schematic structural diagram of a socket of a round plug connector according to Embodiment 2;

[0037] Figure 8 , Fig. 9 It is a schematic structural diagram of a hybrid plug connector that is mated with a flat plug and a round plug in Example 3;

[0038] Fig.10 It is a schematic diagram of the development of the hybrid plug connector that is mated with the flat plug and the round plug in Example 3;

[0039] Fig.11 A schematic diagram of the structure of a socket of a hybrid plug connector according to Embodiment 3;

[0040] Fig.12 It is a schematic diagram of the structure of the flat plug connector and the hybrid plug connector in Example 4;

[0041] Fig.13 This is a schematic diagram of the expansion of the flat plug connector and the hybrid plug connector in Example 4;

[0042] Fig.14 It is a schematic diagram of the structure of a socket using the flat plug connector and the hybrid plug connector of Example 4.

[0043] In the figure, 1. Flat plug connector 1-1. Flat plug contact part 1-2. Plug interface end 1-3. Side 1-4. Long through hole 1-5. Flat plug socket body 2. Round plug connector 2-1. Long notch 2-2. Round plug contact part 2-3. Plug connection end 2-4. 2-5. Round plug socket body 3. Hybrid plug connector 3-1. Metal sheet end 3-1-1. One side of the flat plug contact part 3-2. Flat plug metal sheet 3-2-1. Another side of the flat plug contact part 3-3. Round plug metal sheet 3-4. Long through hole 3- 5. Long notch 3-6. Hybrid socket body 4-1. Flat plug connector 4-1-1. Flat plug contact portion 4-1-2. Plug interface end 4-1-3. Side 4-1-4. Long through hole 4-2. Hybrid plug connector 4-2-1. Metal sheet end portion 4-2-2. Flat plug metal sheet 4-2-3. Round plug metal sheet 4-2-4. One side of the flat plug contact portion 4-2-5. The other side of the flat plug contact portion 4-2-6. Round plug contact portion 4-2-7. Long notch 4-3. Flat plug and round plug hybrid socket body. DETAILED DESCRIPTION

[0044] The content of the present invention is further described below in conjunction with the embodiments and drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Embodiment 1:

[0046] like Figure 1-Figure 3 As shown, a surface contact type high-voltage plug connector includes a plug connector, which is a surface contact type plug connector, which is made of an elastic conductive metal sheet rolled into a hollow columnar plug connector, and the plug connector is a flat plug connector 1 that is mated with a flat plug;

[0047] The flat plug connector 1 is in the shape of a flat cube, and the middle part of the cube has two side surfaces protruding inward to form a flat plug contact part 1-1 that contacts the plug, and the metal sheet of the flat plug contact part 1-1 is planar; the height of the flat plug contact part is 1.0-6.0mm; the preferred height is 3.5-5.0mm, and in this example is 4.0mm.

[0048] Furthermore, the metal sheet of the plug interface end 1-2 of the flat plug connector 1 is vertical, and the side edges 1-3 of the metal sheet of the plug interface end 1-2 are connected as a whole, which enhances the clamping force and is not easily deformed after repeated plugging, which is beneficial to extending the service life of the plug connector.

[0049] Furthermore, one or both metal sheets of the flat plug contact portion 1-1 are provided with longitudinal elongated through holes 1-4. The number of the elongated through holes 1-4 is 1-5. Providing elongated through holes can increase the elasticity of metal sheets such as copper sheets, enhance the locking force on the plug, make the contact portion and the plug contact more closely, and also facilitate heat dissipation, reducing the influence of heat on the plug connector.

[0050] like Figure 4 As shown, the safety socket using the above-mentioned surface contact type high-voltage plug connector includes a flat plug socket body 1-5 and a plug connector, and the plug connector is the flat plug connector 1.

[0051] Embodiment 2:

[0052] like Figure 5 As shown, a surface contact type high-voltage plug connector includes a plug connector, which is a surface contact type plug connector, which is made of an elastic conductive metal sheet rolled into a hollow cylindrical plug connector, and the plug connector is a round plug connector 2 that is mated with a round plug;

[0053] The round plug connector 2 is cylindrical in shape and is provided with a longitudinal elongated notch 2-1. The open end of the elongated notch 2-1 is the plug-in connection end 2-3. The middle part of the round plug connector 2 protrudes inward to form a round plug contact portion 2-2 for contacting the round plug with the plug. The metal sheet of the round plug contact portion 2-2 is cylindrical. At least two elongated notches 2-1 divide the plug-in connection end 2-3 and the round plug contact portion 2-2 into at least two petals. The height of the round plug contact portion 2-2 is 1.0-6.0 mm; the preferred height is 3.5-5.0 mm, and in this case it is 4.0 mm.

[0054] Furthermore, the number of the elongated notches 2-1 is 2-6, and the example in the figure shows that there are 4 elongated notches 2-1, which divide the plug connection end 2-3 and the round plug contact portion 2-2 into 4 petals. The elongated notches can increase the elasticity of the metal sheet such as the copper sheet, enhance the locking force on the plug, make the contact portion and the plug contact more closely, and also facilitate heat dissipation, reducing the influence of heat on the plug connector.

[0055] like Figure 6 As shown, further, the metal sheet of the plug interface end 2-4 of the round plug connector 2 is vertical.

[0056] like Figure 7As shown, the safety socket using the above-mentioned surface contact type high-voltage plug connector includes a round plug socket body 2-5 and a plug connector, and the plug connector is the above-mentioned round plug connector 2.

[0057] Embodiment 3:

[0058] like Figure 8-Figure 10 As shown, a surface contact type high-voltage plug connector includes a plug connector, which is a surface contact type plug connector, which is made of an elastic conductive metal sheet rolled into a hollow cylindrical plug connector, and the plug connector is a hybrid plug connector 3 that is mated with a flat plug and a round plug;

[0059] The flat plug connection part of the hybrid plug connector 3 is composed of one side of the metal sheet end portion 3-1 in a planar shape and the flat plug metal sheet 3-2, and the round plug connection part is composed of the other side of the metal sheet end portion 3-1 and the round plug metal sheet 3-3, and the metal sheet end portion 3-1 is located between the flat plug metal sheet 3-2 and the round plug metal sheet 3-3;

[0060] The middle of the metal sheet end portion 3-1 protrudes toward the flat plug metal sheet 3-2 to form a side surface 3-1-1 of the flat plug contact portion where the flat plug contacts the plug, and the middle of the flat plug metal sheet 3-2 protrudes toward the metal sheet end portion 3-1 to form another side surface 3-2-1 of the flat plug contact portion where the flat plug contacts the plug; the metal sheet of the flat plug contact portion is planar;

[0061] The round plug metal sheet 3-3 is cylindrical, and the middle part thereof protrudes toward the end part 3-1 of the metal sheet to form a round plug contact part 3-3-1 for contacting the round plug with the plug; the height of the flat plug contact part and the round plug contact part 3-3-1 is 1.0-6.0mm; the preferred height is 3.5-5.0mm, and in this example is 4.0mm.

[0062] Furthermore, the flat metal sheet 3-2 of the hybrid plug connector 3 is provided with longitudinal elongated through holes 3-4, and the number of the elongated through holes 3-4 is 1-5.

[0063] Furthermore, the round plug metal sheet 3-3 of the hybrid plug connector 3 is provided with a longitudinal elongated notch 3-5, the open end of the elongated notch 3-5 is a plug connection end, and at least two elongated notches 3-5 divide the plug connection end and the round plug contact part of the round plug metal sheet 3-3 into at least two petals.

[0064] Furthermore, the number of the elongated notches 3-5 is 2-6, and the example in the figure shows that two elongated notches 3-5 divide the plug-in connection end and the round plug contact part into three petals.

[0065] Providing long through holes and long notches can increase the elasticity of metal sheets such as copper sheets, enhance the locking force on the plug, make the contact part and the plug contact more closely, and also facilitate heat dissipation, reducing the impact of heat on the plug connector.

[0066] like Fig.11 As shown, the safety socket using the above-mentioned surface contact type high-voltage plug connector includes a hybrid socket body 3-6 and a plug connector that is matched with a flat plug and a round plug, and the plug connector is the above-mentioned hybrid plug connector body 3.

[0067] Embodiment 4:

[0068] like Fig.12 Fig.13 As shown, a surface contact type high-voltage plug connector includes a plug connector, which is a surface contact type plug connector, which is made of an elastic conductive metal sheet rolled into two hollow cylindrical plug connectors, the two plug connectors are respectively located at the two ends of the metal sheet, one of the plug connectors is a flat plug connector 4-1 that is matched with a flat plug, and the other plug connector is a mixed plug connector 4-2 that is matched with a flat plug and a round plug;

[0069] The flat plug connector 4-1 is in the shape of a flat square, and the middle part of the square is a flat plug contact part 4-1-1 that contacts the plug with two side surfaces protruding inwards, and the metal sheet of the flat plug contact part 4-1-1 is in a plane shape; the height of the flat plug contact part is 1.0-6.0mm; the preferred height is 3.5-5.0mm, and in this example is 4.0mm;

[0070] The flat plug connection part of the hybrid plug connector 4-2 is composed of one side of the planar metal sheet end portion 4-2-1 of the metal sheet and the flat plug metal sheet 4-2-2, and the round plug connection part is composed of the other side of the metal sheet end portion 4-2-1 and the round plug metal sheet 4-2-3, and the metal sheet end portion 4-2-1 is located between the flat plug metal sheet 4-2-2 and the round plug metal sheet 4-2-3;

[0071] The middle part of the metal sheet end portion 4-2-1 protrudes toward the flat plug metal sheet 4-2-2 to form a side surface 4-2-4 of the flat plug contact portion where the flat plug contacts the plug, and the middle part of the flat plug metal sheet 4-2-2 protrudes toward the metal sheet end portion 4-2-1 to form another side surface 4-2-5 of the flat plug contact portion where the flat plug contacts the plug; the metal sheet of the flat plug contact portion is planar;

[0072] The round plug metal sheet 4-2-3 is cylindrical, and the middle part thereof protrudes toward the end part 4-2-1 of the metal sheet to form a round plug contact part 4-2-6 for contacting the round plug with the plug; the height of the flat plug contact part and the round plug contact part 4-2-6 is 1.0-6.0mm; the preferred height is 3.5-5.0mm, and in this case is 4.0mm.

[0073] Furthermore, the metal sheet of the plug interface end 4-1-2 of the flat plug connector 4-1 is vertical, and the side edges 4-1-3 of the metal sheet of the plug interface end 4-1-2 are connected as a whole, which enhances the clamping force and is not easily deformed after repeated plugging, which is beneficial to extending the service life of the plug connector.

[0074] Furthermore, one or both metal sheets of the flat plug contact portion 4-1-1 are provided with longitudinal elongated through holes 4-1-4. The number of the elongated through holes 4-1-4 is 1-5, and the number in the figure is two.

[0075] Furthermore, the round plug metal sheet 4-2-3 of the hybrid plug connector 4-2 is provided with a longitudinal elongated notch 4-2-7, the open end of the elongated notch 4-2-7 is a plug connection end, and at least two elongated notches 4-2-7 divide the plug connection end of the round plug metal sheet 4-2-3 and the round plug contact portion 4-2-6 into at least three petals.

[0076] Furthermore, the number of the elongated notches 4-2-7 is 2 to 6, and the figure shows that two elongated notches 4-2-7 divide the plug-in connection end and the round plug-in contact portion 4-2-6 into three petals.

[0077] Providing long through holes and long notches can increase the elasticity of metal sheets such as copper sheets, enhance the locking force on the plug, make the contact part and the plug contact more closely, and also facilitate heat dissipation, reducing the impact of heat on the plug connector.

[0078] like Fig.14 As shown, the safety socket using the above-mentioned surface contact high-voltage plug connector includes a flat plug and round plug hybrid socket body 4-3 and a plug connector that is compatible with flat plugs and round plugs, wherein one of the plug connectors is a flat plug connector 4-1 that is compatible with the flat plug, and the other plug connector is a hybrid plug connector 4-2 that is compatible with the flat plug and round plug.

[0079] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A surface contact high-voltage plug connector, comprising a plug connector, characterized in that: The plug connector is a surface contact plug connector, which is made of an elastic conductive metal sheet rolled into a hollow columnar plug connector, and the plug connector is a flat plug connector that is mated with a flat plug; The flat plug connector is in the shape of a flat square, and the middle part of the square is a flat plug contact part with two side surfaces protruding inwards to contact the plug, and the metal sheet of the flat plug contact part is in the shape of a plane; the height of the flat plug contact part is 1.0-6.0mm; The metal sheet at the plug-in interface end of the flat plug connector is vertical, and the side edges of the metal sheet at the plug-in interface end are connected as one.

2. A surface contact type high-voltage plug connector, comprising a plug connector, characterized in that: The plug connector is a surface contact plug connector, which is made of an elastic conductive metal sheet rolled into a hollow cylindrical plug connector, and the plug connector is a round plug connector that is mated with a round plug; The round plug connector is cylindrical in shape and is provided with a longitudinal long notch. The open end of the long notch is the plug connection end. The middle part of the round plug connector protrudes inward to form a round plug contact part where the round plug contacts the plug. The metal sheet of the round plug contact part is cylindrical. At least two long notches divide the plug connection end and the round plug contact part into at least two petals. The height of the round plug contact part is 1.0-6.0mm.

3. A surface contact high-voltage plug connector, comprising a plug connector, characterized in that: The plug connector is a surface contact plug connector, which is made of an elastic conductive metal sheet rolled into a hollow cylindrical plug connector, and the plug connector is a hybrid plug connector that can be matched with a flat plug and a round plug; The flat plug connection part of the hybrid plug connector is composed of one side of the flat metal sheet end portion of the metal sheet and the flat plug metal sheet, and the round plug connection part is composed of the other side of the metal sheet end portion and the round plug metal sheet, and the metal sheet end portion is located between the flat plug metal sheet and the round plug metal sheet; The middle part of the end of the metal sheet protrudes toward the flat plug metal sheet to form one side of the flat plug contact part where the flat plug contacts the plug, and the middle part of the flat plug metal sheet protrudes toward the end of the metal sheet to form another side of the flat plug contact part where the flat plug contacts the plug; the metal sheet of the flat plug contact part is planar; The round plug metal sheet is cylindrical, and the middle part thereof protrudes toward the end of the metal sheet to form a round plug contact portion where the round plug contacts the plug; the height of the flat plug contact portion and the round plug contact portion is 1.0-6.0 mm; The round plug metal sheet of the hybrid plug connector is provided with a longitudinal elongated notch, the opening end of the elongated notch is a plug connection end, and at least two elongated notches divide the plug connection end and the round plug contact part of the round plug metal sheet into at least two petals.

4. A surface contact type high-voltage plug connector, comprising a plug connector, characterized in that: The plug connector is a surface contact plug connector, which is made of an elastic conductive metal sheet rolled into two hollow cylindrical plug connectors, the two plug connectors are respectively located at the two ends of the metal sheet, one of the plug connectors is a flat plug connector that is matched with a flat plug, and the other plug connector is a mixed plug connector that is matched with a flat plug and a round plug; The flat plug connector is in the shape of a flat square, and the middle part of the square is a flat plug contact part with two side surfaces protruding inwards to contact the plug, and the metal sheet of the flat plug contact part is in the shape of a plane; the height of the flat plug contact part is 1.0-6.0mm; The flat plug connection part of the hybrid plug connector is composed of one side of the flat metal sheet end portion of the metal sheet and the flat plug metal sheet, and the round plug connection part is composed of the other side of the metal sheet end portion and the round plug metal sheet, and the metal sheet end portion is located between the flat plug metal sheet and the round plug metal sheet; The middle part of the end of the metal sheet protrudes toward the flat plug metal sheet to form one side of the flat plug contact part where the flat plug contacts the plug, and the middle part of the flat plug metal sheet protrudes toward the end of the metal sheet to form another side of the flat plug contact part where the flat plug contacts the plug; the metal sheet of the flat plug contact part is planar; The round plug metal sheet is cylindrical, and the middle part thereof protrudes toward the end of the metal sheet to form a round plug contact portion where the round plug contacts the plug; the height of the flat plug contact portion and the round plug contact portion is 1.0-6.0 mm; The metal sheet at the plug-in interface end of the flat plug connector is vertical, and the side edges of the metal sheet at the plug-in interface end are connected as one; The flat metal sheet of the contact portion of the hybrid plug connector is provided with a longitudinal long through hole; The round plug metal sheet of the hybrid plug connector is provided with a longitudinal elongated notch, the opening end of the elongated notch is a plug connection end, and at least two elongated notches divide the plug connection end and the round plug contact part of the round plug metal sheet into at least three petals.

5. A safety socket using a surface contact type high-voltage plug connector, comprising a socket body and a plug connector, characterized in that: The plug connector is the surface contact high-voltage plug connector as claimed in claim 1; or The plug connector is the surface contact high-voltage plug connector as claimed in claim 2; or The plug connector is the surface contact type high-voltage plug connector as claimed in claim 3; or The plug connector is the surface contact high-voltage plug connector as described in claim 4.

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