CN210296686U - Electric connector with electric shock protection - Google Patents

Abstract

The utility model provides an electric connector with protection against electric shock. An electric connector with electric shock protection comprises an electric shock protection male connector and a common connector female connector, wherein the electric shock protection male connector consists of a positive electrode male conductive part, a negative electrode male conductive part, an insulation main body, a first conducting sheet and a second conducting sheet; the common connector female head consists of a positive electrode female conductive part, a negative electrode female conductive part, an insulating main body and a common conducting part. An electric connector with electric shock protection comprises an electric shock protection female connector and a common connector male connector, wherein the electric shock protection female connector consists of a positive female conductive part, a negative female conductive part, an insulating main body, a first conducting sheet and a second conducting sheet; the common connector male head consists of a positive electrode male conductive part, a negative electrode male conductive part, an insulating main body and a common conducting part.

Description

Electric connector with electric shock protection

The technical field is as follows:

the present invention relates to a connector, and more particularly to an electrical connector with protection against electric shock.

Background art:

at present, connectors for charging or charging and discharging such as electric vehicles, balance cars, swing cars, wheelbarrows, scooters and mobility carts on the market are installed and fixed on a shell of the connector, but positive and negative conductive parts of the connector are generally directly exposed outside. Once the voltage of the battery exceeds 36V, the voltage exceeds the safe voltage which can be borne by a human body, and once a person carelessly touches positive and negative conductive parts of the connector, the human body is easy to get an electric shock accident. Especially, when a child carelessly takes a coin, a key or other metal materials to touch a conductive part of a connector during playing, the coin, the key or other metal materials can be burned black, and fingers can be seriously burned!

The utility model has the following contents:

in order to solve the above or other potential problems existing in the prior art, the present invention provides an electrical connector with protection against electric shock.

The utility model provides a technical scheme that its technical problem adopted: an electric connector with electric shock protection comprises an electric shock protection male connector and a common connector female connector, wherein the electric shock protection male connector consists of a positive electrode male conductive part, a negative electrode male conductive part, an insulation main body, a first conducting sheet and a second conducting sheet; the front surface of the first conducting sheet, the front ends of the two side surfaces and the back surface of the second conducting sheet, and the front ends and the middle rear parts of the two side surfaces are fixed in the insulating main body, and a column groove is formed between the back surface of the first conducting sheet and the front end of the front surface of the second conducting sheet in the insulating main body; the tail ends of the first conducting sheet and the second conducting sheet extend out of the rear end of the insulating main body to be used as welding lines for welding an external power line; the first conducting piece or the second conducting piece can be connected with the positive pole public conducting part through an external power line and can also be connected with the negative pole public conducting part through the external power line; the common connector female head consists of a positive electrode female conductive part, a negative electrode female conductive part, an insulating main body and a common conducting part; the common conducting part can be inserted into a column groove formed between the back surface of the first conducting sheet and the front end of the front surface of the second conducting sheet of the male head of the electric shock preventing connector. When the common conducting component is inserted into the column groove, the front ends of the first conducting sheet and the second conducting sheet are conducted and electrically connected under the action of the common conducting component; the distance L1 between the back surface of the first conducting piece and the front surface of the second conducting piece is less than or equal to the maximum width or the maximum outer diameter D1-0.25mm of the front end of the common conducting component of the common connector female head and is less than or equal to the maximum width or the maximum outer diameter D1 of the front end of the common conducting component of the common connector female head.

In the electrical connector with electric shock protection, the shape of the column groove formed between the back surface of the first conducting sheet and the front end of the front surface of the second conducting sheet of the male connector of the electric shock protection connector can be a cylindrical groove, an elliptic cylindrical groove, a square column groove or other shapes of column grooves.

When the first conducting piece or the second conducting piece is connected with the positive male conductive part through the external power line, the tail end of the common conducting part of the female head of the common connector can be connected with the positive female conductive part through the external power line; when the first conducting piece or the second conducting piece is connected with the negative pole male conductive part through the external power line, the tail end of the common conducting part of the common connector female head can also be connected with the negative pole female conductive part through the external power line.

In the electrical connector with electric shock protection, the insulating body of the male head of the electric shock protection connector is internally provided with the third male conductive component; the common female connector has a third female conductive member.

An electric connector with electric shock protection comprises an electric shock protection female connector and a common connector male connector, wherein the electric shock protection female connector consists of a positive female conductive part, a negative female conductive part, an insulating main body, a first conducting sheet and a second conducting sheet; the front surface of the first conducting sheet, the front ends of the two side surfaces and the back surface of the second conducting sheet, and the front ends and the middle rear parts of the two side surfaces are fixed in the insulating main body, and a column groove is formed between the back surface of the first conducting sheet and the front end of the front surface of the second conducting sheet in the insulating main body; the tail ends of the first conducting sheet and the second conducting sheet extend out of the rear end of the insulating main body to be used as welding lines for welding an external power line; the first conducting piece or the second conducting piece can be connected with the positive electrode female conducting part through an external power line and can also be connected with the negative electrode female conducting part through the external power line; the common connector male head consists of a positive electrode male conductive part, a negative electrode male conductive part, an insulating main body and a common conducting part; the common conducting member can be inserted into a column groove formed between the back surface of the first conducting sheet and the front end of the front surface of the second conducting sheet of the female connector of the electric shock preventing connector. When the common conducting component is inserted into the column groove, the front ends of the first conducting sheet and the second conducting sheet are conducted and electrically connected under the action of the common conducting component; the distance L1 between the back surface of the first conducting piece and the front surface of the second conducting piece is less than or equal to the maximum width or the maximum outer diameter D1-0.25mm of the front end of the common conducting part of the common connector male head and is less than or equal to the maximum width or the maximum outer diameter D1 of the front end of the common conducting part of the common connector male head.

In the electrical connector with electric shock protection, the shape of the column groove formed between the back surface of the first conducting sheet and the front end of the front surface of the second conducting sheet of the female head of the electric shock protection connector can be a cylindrical groove, an elliptic cylindrical groove, a square column groove or other shapes of column grooves.

When the first conducting piece or the second conducting piece is connected with the positive female conductive part through the external power line, the tail end of the common conducting part of the common connector male head can be connected with the positive male conductive part through the external power line; when the first conducting piece or the second conducting piece is connected with the negative pole female conductive part through the external power line, the tail end of the common conducting part of the common connector male head can also be connected with the negative pole male conductive part through the external power line.

The electric connector with the electric shock protection function is characterized in that the insulating main body of the female head of the electric shock protection connector is internally provided with a third female conductive part; the common connector male has a third male conductive member.

The utility model has the advantages that 1) the utility model has the biggest technical characteristics that the front ends and the middle-rear parts of the first conducting sheet and the second conducting sheet are placed in parallel and are fixed by the insulating main body after being separated by a certain distance, a column groove is formed between the back surface of the first conducting sheet and the front end of the front surface of the second conducting sheet, and the back surface of the first conducting sheet and the front surface of the second conducting sheet are connected electrically after a common conducting part is just inserted into the column groove; the column groove is equivalent to the inner hole at the front end of the positive (negative) pole female conductive part, and only the rear ends of the first conductive sheet and the second conductive sheet are separated by the insulating body; therefore, when the common connector female head (the common connector male head) is not inserted into the electric shock prevention connector male head (the electric shock prevention connector female head), the rear ends of the first conducting sheet and the second conducting sheet are isolated by the insulating main body and are in a power-off state, and the human body is not subjected to electric shock; when the common connector female head (the common connector male head) is inserted into the electric shock prevention connector male head (the electric shock prevention connector female head), the common conduction component is inserted into the column groove to conduct and electrically connect the back surface of the first conduction piece and the front surface of the second conduction piece, so that the common conduction component is in a power-on state. 2) The utility model discloses a first conduction piece and second conduction piece are firmly fixed by insulating main part and have between them with the ordinary post groove that switches on the mutual plug of part, are equivalent to that "positive (negative) female conductive part" is fixed at the front end of insulating main part. The biggest advantage of design like this is that the ordinary part that switches on is better with the plug power of first conduction piece, second conduction piece, is difficult to the pine and takes off, can not appear contact failure and arouse the spark and cause first conduction piece, second conduction piece blacking, oxidation, the plating layer drops or arouse insulating main part burning etc.. Meanwhile, the endurable plugging times between the common conducting component and the first conducting piece and between the common conducting component and the second conducting piece are also longer, and the first conducting piece and the second conducting piece cut off the current instantly after the common conducting component is pulled out, so that the accident that the first conducting piece and the second conducting piece are still possibly electrified after the common conducting component is pulled out cannot occur. 3) The front surface of the first conducting sheet, the front ends of the two side surfaces and the back surface of the second conducting sheet, the front ends of the two side surfaces and the middle rear part are fixed in the insulating main body, the size of a column groove formed by the front surfaces and the back surfaces is small, the distance L1 between the back surface of the first conducting sheet and the front surface of the second conducting sheet is also small, coins, keys and the like cannot be inserted into the column groove at all to contact with the first conducting sheet and the second conducting sheet to cause the phenomenon that a human body gets an electric shock, and the safety performance of the electric shock protector is high.

Description of the drawings:

in order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings. Of course, the drawings described below are only some of the preferred embodiments of the present invention, and other drawings may be made by those skilled in the art without departing from the spirit and essential characteristics of the present invention.

FIG. 1 is a cross-sectional view of a male connector of an electric shock-proof connector

FIG. 2 is a cross-sectional view of a conventional female connector

FIG. 3 is a schematic cross-sectional view of the male connector of the electric shock preventing connector

FIG. 4 is a schematic cross-sectional view of a conventional female connector

FIG. 5 is a cross-sectional view of a female connector of an electrical shock-proof connector

FIG. 6 is a cross-sectional view of a male connector of a conventional connector

FIG. 7 is a schematic cross-sectional view of the female connector of the electric shock preventing connector

FIG. 8 is a schematic cross-sectional view of a conventional male connector

In the figure, 11-1 is a positive electrode male conductive part, 11-2 is a negative electrode male conductive part, 12-1 is a positive electrode female conductive part, 12-2 is a negative electrode female conductive part, 13 is a first conducting sheet, 15 is a second conducting sheet, 16 is a column groove, 18 is an external power line, 19 is a common conducting part, 21 is an electric shock prevention connector male head, 22 is a common connector female head, 23 is an electric shock prevention connector female head, 24 is a common connector male head

The specific implementation mode is as follows:

[ example 1 ]

The electric shock prevention connector male head 21 consists of a positive pole male conductive part 11-1, a negative pole male conductive part 11-2, an insulation main body 17-1, a first conducting sheet 13 and a second conducting sheet 15; the front surface 13-1 of the first conducting sheet 13, the front ends of the two side surfaces and the back surface 15-2 of the second conducting sheet 15, and the front ends and the middle rear parts of the two side surfaces are fixed in the insulating main body 17-1, and a column groove 16 is formed between the back surface 13-2 of the first conducting sheet 13 and the front end of the front surface 15-1 of the second conducting sheet 15 in the insulating main body 17-1; the tail ends of the first conducting sheet 13 and the second conducting sheet 15 extend out of the rear end of the insulating main body 17-1 to be used as welding lines for welding an external power line 18; the first conductive sheet 13 or the second conductive sheet 15 may be connected to the positive electrode male conductive member 11-1 through an external power supply line 18, or may be connected to the negative electrode male conductive member 11-2 through an external power supply line 18. The common connector female head 22 consists of a positive electrode female conductive part 12-1, a negative electrode female conductive part 12-2, an insulating main body 17-2 and a common conducting part 19; the normal conduction member 19 can be inserted into the column groove 16 formed between the back surface 13-2 of the first conduction piece 13 and the front end of the front surface 15-1 of the second conduction piece 15 of the male head 21 of the electric shock preventing connector. When the common conducting part 19 is inserted into the column slot 16, the front ends of the first conducting sheet 13 and the second conducting sheet 15 will be electrically connected under the action of the common conducting part 19; the distance L1 between the back surface 13-2 of the first conducting piece 13 and the front surface 15-1 of the second conducting piece 15 is less than or equal to the maximum width or the maximum outer diameter D1-0.25mm of the front end of the common conducting component 19 of the common connector female head 22 and less than or equal to the maximum width or the maximum outer diameter D1 of the front end of the common conducting component 19 of the common connector female head 22.

The shape of the column groove 16 formed between the back surface 13-2 of the first conducting sheet 13 and the front end of the front surface 15-1 of the second conducting sheet 15 of the male electric shock preventing connector 21 can be a cylindrical groove, an elliptic cylindrical groove, a square column groove and other column grooves.

When the first conducting piece 13 or the second conducting piece 15 is connected with the positive male conductive part 11-1 through the external power line 18, the tail end of the common conducting part 19 of the common connector female head 22 can be connected with the positive female conductive part 11-1 through the external power line 18; when the first conductive piece 13 or the second conductive piece 15 is connected to the negative male conductive member 11-2 through the external power line 18, the tail end of the common conductive member 19 of the common connector female 22 may also be connected to the negative female conductive member 11-2 through the external power line 18.

The insulating bodies 17-1 and 17-2 of the male connector 21 and the female connector 22 can be provided with a third male conductive component.

As shown in fig. 1 and fig. 2, the tail end of the first conducting sheet 13 of the male head 21 of the electric shock preventing connector is connected with the positive electrode male conductive member 11-1 through the external power line 18, the tail end of the second conducting sheet 15 is connected with the positive electrode of the battery through the external power line 18, and the negative electrode male conductive member 11-2 is connected with the negative electrode of the battery through the external power line 18; when the common conduction member 19 is inserted into the post groove 16, the back surface 13-2 of the first conduction piece 13 and the front surface 15-1 of the second conduction piece 15 are conductively and electrically connected by the common conduction member 19. As shown in fig. 3 and 4, the tail end of the second conducting sheet 15 of the male head 21 of the electric shock preventing connector is connected with the negative electrode male conductive component 11-2 through the external power line 18, the tail end of the first conducting sheet 13 is connected with the negative electrode of the battery through the external power line 18, and the positive electrode male conductive component 11-1 is connected with the positive electrode of the battery through the external power line 18; the tail end of a common conducting part 19 of a common connector female head 22 is connected with the negative female conductive part 12-2 through an external power line 18; when the common conducting member 19 is inserted into the column groove 16, the back surface 13-2 of the first conducting sheet 13 and the front surface 15-1 of the second conducting sheet 15 are electrically connected by the common conducting member 19, and the common conducting member 19 and the first and second conducting sheets 13 and 15, and the negative male conducting member 11-2 and the negative female conducting member 12-2 simultaneously play a role in transmitting current.

[ example 2 ]

The electric shock prevention connector female head 23 consists of a positive electrode female conductive part 12-1, a negative electrode female conductive part 12-2, an insulating main body 17-3, a first conducting sheet 13 and a second conducting sheet 15; the front surface 13-1 of the first conducting sheet 13, the front ends of the two side surfaces and the back surface 15-2 of the second conducting sheet 15, and the front ends and the middle rear parts of the two side surfaces are fixed in an insulating main body 17-3, and a column groove 16 is formed between the back surface 13-2 of the first conducting sheet 13 and the front end of the front surface 15-1 of the second conducting sheet 15 in the insulating main body 17-3; the tail ends of the first conducting sheet 13 and the second conducting sheet 15 extend out of the rear end of the insulating main body 17-3 to be used as welding lines for welding an external power line 18; the first conducting sheet 13 or the second conducting sheet 15 can be connected with the anode bus conductive part 12-1 through an external power line 18, and can also be connected with the cathode bus conductive part 12-2 through the external power line 18; the common connector male head 24 consists of a positive electrode male conductive part 11-1, a negative electrode male conductive part 11-2, an insulating main body 17-4 and a common conducting part 19; the normal conduction member 19 can be inserted into the post groove 16 formed between the rear surface 13-1 of the first conduction piece 13 and the front end of the front surface 15-1 of the second conduction piece 15 of the female contact 23 of the electric shock preventing connector. When the common conducting part 19 is inserted into the column slot 16, the front ends of the first conducting sheet 13 and the second conducting sheet 15 will be electrically connected under the action of the common conducting part 19; the distance L1 between the back surface 13-2 of the first conducting piece 13 and the front surface 15-1 of the second conducting piece 15 is less than or equal to the maximum width or the maximum outer diameter D1-0.25mm of the front end of the common conducting component 19 of the common connector male head 24 and less than or equal to the maximum width or the maximum outer diameter D1 of the front end of the common conducting component 19 of the common connector male head 24.

The shape of the column groove 16 formed between the back surface 13-2 of the first conducting sheet 13 and the front end of the front surface 15-1 of the second conducting sheet 15 of the female electric shock preventing connector 23 can be a cylindrical groove, an elliptic cylindrical groove, a square column groove and other column grooves.

When the first conducting piece 13 or the second conducting piece 15 is connected with the positive female conductive part 12-1 through the external power line 18, the tail end of the common conducting part 19 of the common connector male head 24 can be connected with the positive male conductive part 11-1 through the external power line 18; when the first conductive piece 13 or the second conductive piece 15 is connected to the negative female conductive member 12-2 through the external power line 18, the tail end of the common conductive member 19 of the common connector male 24 may also be connected to the negative male conductive member 11-2 through the external power line 18.

The insulation main bodies 17-3 and 17-4 of the electric shock prevention connector female head 23 and the common connector male head 24 are internally provided with third female conductive parts.

As shown in fig. 5 and 6, the tail end of the first conducting sheet 13 of the female connector 23 is connected to the positive female conductive member 12-1 through the external power line 18, the tail end of the second conducting sheet 15 is connected to the positive electrode of the battery through the external power line 18, and the negative female conductive member 12-2 is connected to the negative electrode of the battery through the external power line 18; when the common conduction member 19 is inserted into the post groove 16, the back surface 13-2 of the first conduction piece 13 and the front surface 15-1 of the second conduction piece 15 are conductively and electrically connected by the common conduction member 19. As shown in fig. 7 and 8, the tail end of the first conducting piece 13 of the contact-proof female connector 23 is connected with the positive female conductive component 12-1 through the external power line 18, the tail end of the second conducting piece 15 is connected with the positive electrode of the battery through the external power line 18, and the negative female conductive component 12-2 is connected with the negative electrode of the battery through the external power line 18; the tail end of a common conducting part 19 of a common connector male head 24 is connected with the positive pole male conducting part 11-1 through an external power line 18; when the common conducting member 19 is inserted into the column groove 16, the back surface 13-2 of the first conducting sheet 13 and the front surface 15-1 of the second conducting sheet 15 are conductively and electrically connected by the common conducting member 19, and the common conducting member 19 and the first conducting sheet 13 and the second conducting sheet 15, and the positive female conducting member 12-1 and the positive male conducting member 11-1 can simultaneously play a role in transmitting current.

In the description of the present invention, it should be understood that the terms "front side", "back side" of the first via, "front side", "back side" of the second via, etc. indicate the orientation based on the orientation shown in the drawings, and are not necessarily arranged according to the specific orientation and position for better understanding of the simplified description of the present invention. It should be understood that the structure formed by the first and second conductive sheets that can be connected and conducted is the main protection point of the present invention, and therefore the terms "front" and "back" should not be construed as the limitation of the present invention.

It should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. These embodiments are also only a part of the preferred embodiments of the present invention, and not all embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. It is not necessary or necessary to exhaustively enumerate all embodiments herein, and obvious variations or modifications can be made without departing from the scope of the invention.

Claims (8)

1. An electric connector with electric shock protection comprises an electric shock protection male connector head (21) and a common connector female connector head (22), and is characterized in that the electric shock protection male connector head (21) consists of a positive electrode male conductive component (11-1), a negative electrode male conductive component (11-2), an insulating main body, a first conducting sheet (13) and a second conducting sheet (15); the front surface of the first conducting sheet (13), the front ends of the two side surfaces and the back surface of the second conducting sheet (15), the front ends of the two side surfaces and the middle rear part are fixed in the insulating main body, and a column groove (16) is formed between the back surface of the first conducting sheet (13) and the front end of the front surface of the second conducting sheet (15) in the insulating main body; the tail ends of the first conducting sheet (13) and the second conducting sheet (15) extend out of the rear end of the insulating main body to be used as welding lines for welding an external power line (18); the first conducting sheet (13) or the second conducting sheet (15) is connected with the positive electrode male conducting part (11-1) through an external power line (18) or connected with the negative electrode male conducting part (11-2) through the external power line (18); the common connector female head (22) consists of a positive electrode female conductive part (12-1), a negative electrode female conductive part (12-2), an insulating main body and a common conducting part (19); the common conducting part (19) can be inserted into a column groove (16) formed between the back surface of the first conducting sheet (13) and the front end of the front surface of the second conducting sheet (15) of the male head (21) of the electric shock preventing connector; when the common conducting part (19) is inserted into the column groove (16), the front ends of the first conducting sheet (13) and the second conducting sheet (15) are conducted and electrically connected under the action of the common conducting part (19); the distance L1 between the back surface of the first conducting piece (13) and the front surface of the second conducting piece (15) is less than or equal to the maximum width or the maximum outer diameter D1-0.25mm of the front end of the common conducting component (19) of the common connector female head (22) and less than or equal to the maximum width or the maximum outer diameter D1 of the front end of the common conducting component (19) of the common connector female head (22).

2. The electrical connector with protection against electric shock as claimed in claim 1, wherein the shape of the post groove (16) formed between the back surface of the first conductive sheet (13) and the front end of the front surface of the second conductive sheet (15) of the male connector (21) is selected from the group consisting of a cylindrical groove, an elliptical cylindrical groove, a square post groove and other shapes of post grooves.

3. An electrical connector with protection against electric shock as claimed in claim 1, wherein when the first conductive piece (13) or the second conductive piece (15) is connected to the positive male conductive member (11-1) through the external power line (18), the tail end of the normal conductive member (19) of the normal female connector (22) is connected to the positive female conductive member (12-1) through the external power line (18); when the first conducting piece (13) or the second conducting piece (15) is connected with the negative pole male conducting part (11-2) through the external power line (18), the tail end of the common conducting part (19) of the common connector female head (22) is connected with the negative pole female conducting part (12-2) through the external power line (18).

4. An electrical connector with protection against electric shock as claimed in any one of claims 1 to 3, characterized in that said male head (21) of the connector has a third male conductive element inside its insulating body; the common female connector head (22) has a third female conductive member.

5. An electric connector with electric shock protection comprises an electric shock protection connector female head (23) and a common connector male head (24), and is characterized in that the electric shock protection connector female head (23) consists of a positive female conductive component (12-1), a negative female conductive component (12-2), an insulating main body, a first conducting sheet (13) and a second conducting sheet (15); the front surface of the first conducting sheet (13), the front ends of the two side surfaces and the back surface of the second conducting sheet (15), the front ends of the two side surfaces and the middle rear part are fixed in the insulating main body, and a column groove (16) is formed between the back surface of the first conducting sheet (13) and the front end of the front surface of the second conducting sheet (15) in the insulating main body; the tail ends of the first conducting sheet (13) and the second conducting sheet (15) extend out of the rear end of the insulating main body to be used as welding lines for welding an external power line (18); the first conducting sheet (13) or the second conducting sheet (15) is connected with the positive electrode bus conducting part (12-1) through an external power line (18) or connected with the negative electrode bus conducting part (12-2) through the external power line (18); the common connector male head (24) consists of a positive electrode male conductive part (11-1), a negative electrode male conductive part (11-2), an insulating main body and a common conducting part (19); the common conducting component (19) can be inserted into a column groove (16) formed between the back surface of the first conducting sheet (13) and the front end of the front surface of the second conducting sheet (15) of the electric shock preventing connector female head (23); when the common conducting part (19) is inserted into the column groove (16), the front ends of the first conducting sheet (13) and the second conducting sheet (15) are conducted and electrically connected under the action of the common conducting part (19); the distance L1 between the back surface of the first conducting piece (13) and the front surface of the second conducting piece (15) is less than or equal to the maximum width or the maximum outer diameter D1-0.25mm of the front end of the common conducting part (19) of the common connector male head (24) and less than or equal to the maximum width or the maximum outer diameter D1 of the front end of the common conducting part (19) of the common connector male head (24).

6. The electrical connector with protection against electric shock as claimed in claim 5, wherein the shape of the post groove (16) formed between the back surface of the first conductive sheet (13) and the front end of the front surface of the second conductive sheet (15) of the female contact (23) of the electrical connector is selected from the group consisting of a cylindrical groove, an elliptical cylindrical groove, a square post groove and other shapes of post grooves.

7. An electrical connector with protection against electric shock as claimed in claim 5, wherein when the first conductive piece (13) or the second conductive piece (15) is connected to the positive female conductive member (12-1) through the external power line (18), the tail end of the normal conductive member (19) of the normal connector male terminal (24) is connected to the positive male conductive member (11-1) through the external power line (18); when the first conducting piece (13) or the second conducting piece (15) is connected with the negative female conducting part (12-2) through the external power line (18), the tail end of the common conducting part (19) of the common connector male head (24) is connected with the negative male conducting part (11-2) through the external power line (18).

8. An electrical connector with protection against electric shock as claimed in any one of claims 5 to 7, characterized in that said female connector head (23) has a third female conductive element inside the insulating body; the common connector male (24) has a third male conductive member.

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