CN111682378B

CN111682378B - Charging gun

Info

Publication number: CN111682378B
Application number: CN202010603584.7A
Authority: CN
Inventors: 魏金渠; 胡晶晶; 林文健; 陆沛坤
Original assignee: Guangdong Power Grid Co Ltd; Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Guangdong Power Grid Co Ltd; Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2020-06-29
Filing date: 2020-06-29
Publication date: 2021-09-03
Anticipated expiration: 2040-06-29
Also published as: CN111682378A

Abstract

The invention discloses a charging gun, which comprises a gun body and an insertion head arranged at the end part of the gun body, wherein a plurality of slots are arranged in the insertion head, contact pins are connected in the slots, and one end of each contact pin, which is close to the gun body, is provided with a conductive bar connected with the surface of the insertion head, the charging gun can be automatically disconnected and automatically separated from the charging gun through a sensing sleeve and a trigger, when in implementation, once rainwater splashes into the slots and is sensed to pass through by the sensing sleeve, a permanent magnet can be pulled by an electromagnet to pull an electric connection terminal seat and a belt deflection sleeve, so that a clamping block is bent to release the conductive bullet sleeve, then a push-up spring can reset and push the conductive bullet sleeve to slide away from a fixed column, the purpose of disconnection is realized, the charging gun is simple in operation, and the conductive bullet sleeve is only pushed back to the original position during charging, thereby further improving the sealing and safety of the device.

Description

Charging gun

Technical Field

The invention relates to the field of charging, in particular to a charging gun.

Background

The automobile charging gun is mainly used for charging electric automobiles, is similar to an oiling machine in a gas station, can charge new energy automobiles of various models, is directly connected with an alternating current power grid at the input end of a charging pile, is provided with a charging gun at the output end and used for charging the new energy automobiles, and is divided into 7 joints (alternating current piles) and 9 joints (direct current piles), wherein each joint represents different power sources or control signals.

At present common rifle that charges is in the use, because of its contact pin department need insert the car head department that charges, so the contact pin needs expose out, but when the rifle that charges uses in moist rainy day, in case there is the drop of water blown to the contact pin border position, thereby very easily through the rifle shell that charges slip contact pin, lead to the circumstances such as electric leakage to take place.

Disclosure of Invention

Therefore, the invention provides a charging gun, which aims to solve the problem that in the prior art, when the charging gun is used in a wet rainy day, once water drops are blown to the edge position of a contact pin, the contact pin is very easy to slide through a shell of the charging gun so as to contact with the contact pin, and the situation of electric leakage and the like is caused.

In order to achieve the above purpose, the invention provides the following technical scheme:

a charging gun comprises a gun body and an insertion head arranged at the end part of the gun body, wherein a plurality of slots are arranged in the insertion head, contact pins are connected in the slots, one end, close to the gun body, of each contact pin is provided with a conductive bar connected with the surface of the insertion head, and a leakage bouncing-off mechanism for separating the contact pins from the conductive bars is arranged on each conductive bar;

the electric leakage springing-off mechanism comprises a fixing column and a sensing sleeve, the fixing column is positioned in the slot, one end of the fixing column is connected with the conductive bar, and the other end of the fixing column is sleeved with the contact pin; the sensing sleeve is sleeved on the inner wall of the slot;

a trigger for clamping the contact pin is arranged on the side wall of one end, close to the gun body, of the fixed column, and one end, far away from the fixed column, of the trigger is connected with the conductive bar; the inner wall of the gun body is connected with a sucking and holding device, when current flows through the sensing sleeve, the sucking and holding device pulls the trigger to move towards one side far away from the conductive bar and releases the contact pin, so that the contact pin slides away from the conductive bar;

the trigger comprises a plurality of clamping blocks which are arranged on the side wall of the fixed column, close to one end of the conductive bar, the surface of each clamping block is provided with an embedded platform for clamping the contact pin, the side wall of one end, far away from the fixed column, of each clamping block is sleeved with a driving sleeve, and the driving sleeve can be driven to move towards the suction holder until the clamping blocks are bent, so that the embedded platforms release the contact pin;

the contact pin comprises a conductive elastic sleeve which is sleeved on the side wall of the fixed column and clamped by the embedding table, and a pushing spring which is connected with the clamping block and is used for being driven to push the conductive elastic sleeve towards the direction far away from the fixed column is sleeved on the outer wall of the fixed column;

the clamping block comprises an elastic block of which one end is connected with the fixed column, one end of the elastic block, which is far away from the fixed column, penetrates through the conductive bar and extends into the gun body, a sliding groove for accommodating the elastic block to freely slide is formed in the position, corresponding to the elastic block, of the side wall of the conductive bar, and a bent column which inclines towards one side, which is far away from the fixed column, is installed at one end, which is far away from the fixed column, of the elastic block;

the driving sleeve comprises an electric connection terminal seat connected with the conductive bar and a belt deflection sleeve connected to the side wall of the bent column in a sliding mode, a connecting column is installed between the electric connection terminal seat and the belt deflection sleeve, a column body caulking groove tightly attached to the inclined surface of the bent column is formed in the end portion of the belt deflection sleeve, and a permanent magnet used for being pulled by the holder is installed on the surface of the electric connection terminal seat;

in the process that the permanent magnet slides towards the holder, the biased sleeve and the power connection terminal base are driven to slide along the inclined surface of the bent column, and the bent column is bent so as to press the embedded platform away from the conductive elastic sleeve;

the holder comprises a terminal strip fixed on the inner wall of the gun body, and an electromagnet for drawing the permanent magnet is arranged on the surface of one side, close to the insertion head, of the terminal strip.

Optionally, the sensing sleeve includes a conductive mesh sleeved on the inner wall of the slot, a limiting rubber ring in an annular structure is installed at one end of the conductive mesh, which is far away from the fixing column, a plurality of fixing rubber strips are installed on the inner wall of the conductive mesh, and boosting beads are installed on the fixing rubber strips.

Optionally, the fixing rubber strip is composed of a plurality of compression strips connected with the inner wall of the conductive mesh, and the thickness values of the compression strips are arranged in a linear increasing trend from one end close to the limiting rubber ring to one end far away from the limiting rubber ring.

Optionally, the fixing column is composed of the conductive column and an insulating column, the conductive column is connected to the conductive bar, and the insulating column is installed at one end of the conductive column, which is far away from the conductive bar; the conductive groove is formed in the position of the axis of the conductive column, the conductive sliding column penetrates through the position of the axis of the insulating column, one end of the conductive sliding column is connected with the inner wall of the conductive elastic sleeve, and the other end of the conductive sliding column extends into the conductive groove.

Optionally, a connecting copper bush is arranged on the surface of one side, away from the insertion head, of the terminal block, a wire inserting column is connected in the connecting copper bush, a wire end row is connected to one end, away from the terminal block, of the wire inserting column, and a protector connected with the terminal block is installed on the side wall of the wire end row.

Optionally, the protector includes the conducting strip of parcel in the lateral wall of wire end row, still includes the inflation body of being connected with the conducting strip, the lateral wall of conducting strip is installed and is run through the rifle body to the sealed flexible post of surface, the lateral wall of sealed flexible post with the inflation body is connected, the outside cover of inflation body be equipped with the guide sleeve of terminal row surface connection.

Optionally, the conductive bar includes an insulating block connected to the end face of the insertion head, a plurality of terminal connection blocks connected to the fixing column are mounted on the insulating block, a reset push block for pulling the bent column and pushing the belt bias sleeve back to an initial position is mounted on the surface of the insulating block, and a side wall of one end of the reset push block, which is far away from the insulating block, is connected to the bent column.

The invention has the following advantages:

according to the invention, through the sensing sleeve and the trigger, the operation of automatically breaking and releasing the charging gun is realized when the electric leakage condition occurs; during implementation, once rainwater splashes into the slot and is perceived by the perception cover that there is the electric current to pass through, thereby the permanent magnet just can be drawn by the electro-magnet and draw and connect electric terminal seat and take partial cover for the screens piece is bent and is released the conductive elastic sleeve, then pushes up the spring and can reset and push away the conductive elastic sleeve and slide from the fixed column, realizes the purpose that opens circuit, its easy operation, and only need during charging with the conductive elastic sleeve push back original position alright, from this further improved the leakproofness and the security of equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a leakage tripping mechanism according to an embodiment of the present invention;

fig. 3 is a perspective view of a sensing sleeve according to an embodiment of the present invention.

In the figure:

1-gun body; 2-a suction holder; 3-inserting a pin; 4-a conductive bar; 5-electric leakage bouncing mechanism; 6-a trigger; 7-a stuck bit block; 8-driving the sleeve; 9-sensing sleeve;

101-an insertion head; 102-a slot; 201-terminal row; 202-an electromagnet; 203-connecting a copper sleeve; 204-wire plug; 205-end row of wires; 206-a protector; 207-expansion body; 208-a thermally conductive sheet; 209-sealed telescopic column; 210-a guide sleeve;

301-conductive elastic sleeve; 302-push-up spring;

401 — an insulating block; 402-terminal connection block; 403-resetting the push block; 404-a chute;

501-fixing columns; 502-conductive pillars; 503-insulating columns; 504-conductive slots; 505-a conductive spool;

601-embedding platform; 701-a bullet block; 702-bent columns;

801-connecting terminal base; 802-with offset sleeve; 803-connecting column; 804-column shaft caulking groove; 805-a permanent magnet;

901-a conductive mesh; 902-restriction glue ring; 903-fixing adhesive tape; 904-boost beads; 905-compressed strip.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, the present invention provides a charging gun, which includes a gun body 1 and an insertion head 101 installed at an end of the gun body 1, wherein a plurality of slots 102 are provided in the insertion head 101, a pin 3 is connected in the slot 102, a conductive bar 4 connected to a surface of the insertion head 101 is provided at an end of the pin 3 close to the gun body 1, and a leakage tripping mechanism 5 for tripping the pin 3 from the conductive bar 4 is installed on the conductive bar 4.

The electric leakage opening mechanism 5 comprises a fixing column 501 and a sensing sleeve 9, the fixing column 501 is positioned in the slot 102, one end of the fixing column 501 is connected with the conductive bar 4, and the other end of the fixing column 501 is sleeved with the contact pin 3; the sensing sleeve 9 is sleeved on the inner wall of the slot 102.

The side wall of one end of the fixing column 501 close to the gun body 1 is provided with a trigger 6 which is connected with the conductive bar 4 and used for clamping the contact pin 3, the trigger 6 is far away from the insertion head 101, namely, the end far away from the fixing column 501 is provided with a holder 2 connected with the inner wall of the gun body 1, when the sensing sleeve 9 flows current, the holder 2 pulls the trigger 6 to move towards one side far away from the conductive bar 4 and releases the contact pin 3, so that the contact pin 3 slides away from the conductive bar 4.

The charging gun is the same as a common charging gun in the current market in use, and only the insertion head 101 is inserted into a charging port of a new energy automobile when the charging gun is used, so that the contact pin 3 in the insertion groove 102 can be fully contacted with a charging part at the automobile charging port.

And should charge rifle accessible electric leakage and bounce off protection by mechanism 5 when not using, in case rainwater has got into slot 102, perception cover 9 can perceive the electric current to pass through this moment for inhale and hold ware 2 work, inhale and hold ware 2 later and can draw trigger 6 to move about and release contact pin 3 towards the one side of keeping away from electrically conductive row 4, so that contact pin 3 slides from electrically conductive row 4, then electrically conductive row 4 just can not supply power through contact pin 3.

And when inserting head 101 when not having the rainwater, the user can be compulsory will insert inserting head 101 the mouth that charges that new energy automobile for contact pin 3 resets and can carry out the operation of charging, and whole operation process is simple and convenient, need not reset the operation with external part of rethread, and it guarantees the leakproofness and the security of rifle that charges with the at utmost.

As shown in fig. 1 and fig. 2, the trigger 6 includes a plurality of clamping blocks 7 installed on a side wall of the fixed column 501 close to one end of the conductive bar 4, an embedded platform 601 for clamping the contact pin 3 is installed on a surface of the clamping block 7, and a side wall of one end of the clamping block 7 far from the fixed column 501 is sleeved with a driving sleeve 8, the driving sleeve 8 is used for moving towards the suction holder 2, and the clamping block 7 is bent to make the embedded platform 601 release the contact pin 3;

the contact pin 3 comprises a conductive elastic sleeve 301 which is sleeved on the side wall of the fixed column 501 and clamped by the embedding table 601, and a pushing spring 302 which is connected with the clamping block 7 and used for pushing the conductive elastic sleeve 301 to be far away from the fixed column 501 is sleeved on the outer wall of the fixed column 501.

The clamping block 7 comprises an elastic block 701 with one end connected with the fixed column 501, one end of the elastic block 701 far away from the fixed column 501 penetrates through the conductive bar 4 and extends into the gun body 1, the sliding groove 404 used for accommodating the elastic block 701 to slide freely is arranged at the position corresponding to the side wall of the conductive bar 4 and the elastic block 701, and the bent column 702 inclining towards one side far away from the fixed column 501 is installed at one end of the elastic block 701 far away from the fixed column 501.

When the sensing sleeve 9 senses that a current passes through, the driving sleeve 8 moves towards the holder 2, and the driving sleeve 8 directly slides along the elastic block 701 and the bent column 702 in the sliding process.

Because the driving sleeve 8 comprises the power connection terminal seat 801 connected with the conductive bar 4 and the belt bias sleeve 802 connected with the side wall of the bent column 702 in a sliding manner, the end part of the belt bias sleeve 802 is provided with a column body caulking groove 804 tightly attached to the inclined surface of the bent column 702, then the belt bias sleeve 802 can directly slide in the sliding process of the driving sleeve 8, meanwhile, the column body caulking groove 804 on the driving sleeve can be tightly attached to the inclined surface of the bent column 702 and bends the bent column 702, and after the bent column 702 is pushed, the elastic block 701 can be driven to enable the embedded platform 601 to move along with the elastic block 701, so that the limitation on the conductive elastic sleeve 301 is released.

That is, the limit of the push-up spring 302 is released, and then the push-up spring 302 resets and pushes the conductive elastic sleeve 301 to separate from the fixing column 501, so as to achieve the purpose of breaking the circuit, and if the charging gun leaks electricity after being inserted into the charging port of the vehicle, the charging gun can be pushed out directly by the push of the conductive elastic sleeves 301, so that a user can take out the charging gun safely and quickly.

If a user inserts the charging gun into the charging port of the vehicle, the conductive elastic sleeve 301 is pushed to press the push-up spring 302 until the conductive elastic sleeve 301 is restored to be clamped by the embedded platform 601, and the embedded platform 601 may have an isosceles triangle structure as shown in fig. 2.

As shown in fig. 1 and 2, a connecting column 803 is installed between the electric terminal block 801 and the belt bias sleeve 802, and a permanent magnet 805 for being pulled by the holder 2 is installed on the surface of the electric terminal block 801;

in the process that the permanent magnet 805 slides towards the holder 2, the biased sleeve 802 and the electric terminal base 801 are driven to slide along the inclined surface of the bent column 702, and the bent column 702 is bent to press the embedded platform 601 away from the conductive elastic sleeve 301.

As shown in fig. 2 and 3, the sensing sleeve 9 includes a conductive net 901 sleeved on the inner wall of the slot 102.

When the conductive net 901 in the sensing sleeve 9 senses that a current flows through, the holder 2 will directly pull the permanent magnet 805 to move towards the holder 2, and then the permanent magnet 805 will directly drive the power connection terminal seat 801 and the biased sleeve 802 to move together (the power connection terminal seat 801 and the holder 2 are electrically connected through the terminal) so as to perform the operation of bending the elastic block 701.

As shown in fig. 1 and fig. 2, the fixing column 501 is composed of a conductive column 502 connected to the conductive bar 4 and an insulating column 503 installed at one end of the conductive column 502 far from the conductive bar 4, a conductive groove 504 is opened at an axial position of the conductive column 502, an axial position of the insulating column 503 is connected to a conductive sliding column 505 in a penetrating manner, one end of the conductive sliding column 505 is connected to an inner wall of the conductive elastic sleeve 301, and the other end of the conductive sliding column 505 extends into the conductive groove 504.

The fixed column 501 is electrically conductive through the conductive column 502, that is, the conductive column 502 transmits the current from the conductive bar 4 to the conductive sliding column 505, and then the conductive sliding column 505 transmits the transmitted current to the end of the conductive elastic sleeve 301 (that is, the end and the outer shell of the conductive elastic sleeve 301 are main power transmission sites, and the contact site of the inner wall of the conductive elastic sleeve 301 and the push-up spring 302 is made of an insulating material), and then the conductive elastic sleeve 301 is charged.

Once the conductive sleeve 301 is pushed by the push-up spring 302, the conductive sleeve 301 will slide with the conductive post 502 until the conductive post 502 slides out of the conductive slot 504.

As shown in fig. 1, the holder 2 includes a terminal strip 201 fixed on the inner wall of the gun body 1, an electromagnet 202 for pulling a permanent magnet 805 is installed on one side surface of the terminal strip 201 close to the insertion head 101, a connecting copper sleeve 203 is installed on the other side surface of the terminal strip 201, a wire inserting column 204 is connected in the connecting copper sleeve 203, a wire end strip 205 is connected to one end of the wire inserting column 204 far from the terminal strip 201, and a protector 206 connected with the terminal strip 201 is installed on the side wall of the wire end strip 205.

The holder 2 connects the conductive bar 4 with the external power line by means of terminal connection, once the current flows through the conductive net 901, the electromagnet 202 will generate magnetic force to pull the permanent magnet 805, so that the conductive bullet sleeve 301 is separated, and when electric leakage occurs, high temperature is easily generated, so that the power line inside the gun body 1 can be disconnected by the protector 206, and the phenomenon of burning of an aging line is prevented.

Protector 206 is including the thermally conductive sheet 208 of parcel at wire end row 205 lateral wall and the inflation body 207 of being connected with thermally conductive sheet 208, and the sealed flexible post 209 of running through the rifle body 1 to the surface is installed to the lateral wall of thermally conductive sheet 208, is connected with inflation body 207 at the lateral wall of sealed flexible post 209, and the outside cover of inflation body 207 is equipped with the guide cover 210 of being connected with terminal row 201 surface.

In particular, when the protector 206 is used, once a high temperature occurs, the heat conducting fins 208 transmit heat to the expansion body 207 (optionally, a balloon filled with a gas that is very easily expandable when heated), so that the expansion body 207 expands and pushes the sealing telescopic column 209 to move, and the sealing telescopic column 209 pulls the lead end row 205 to move when moving until the lead inserting column 204 is pulled not to contact the connecting copper sleeve 203.

As shown in fig. 1 and 2, the conductive bar 4 includes an insulating block 401 connected to an end face of the insertion head 101, a plurality of terminal connection blocks 402 connected to the fixing posts 501 are mounted on the insulating block 401, a reset push block 403 for pulling the bent posts 702 to push the bias sleeve 802 back to an initial position is mounted on a surface of the insulating block 401, and a side wall of one end of the reset push block 403 away from the insulating block 401 is connected to the bent posts 702.

The conductive bar 4 is arranged to reduce the contact conductive area and the risk of electric leakage, and when the bent rod 702 is driven to be pressed, the bent rod 702 moves towards the permanent magnet 805, and simultaneously stretches the reset push block 403, and then once the biased sleeve 802 needs to be reset, the bent rod 702 and the reset push block 403 are simultaneously reset, and the biased sleeve 802 is driven to the initial position.

As shown in fig. 1, fig. 2 and fig. 3, the restriction that is the loop configuration is installed to the one end that fixed column 501 was kept away from to electrically conductive net 901 and is glued ring 902, this restriction is glued ring 902 and can is played the restriction and is blockked the effect, avoid the rainwater directly to get into, and install a plurality of fixed adhesive tape 903 at the inner wall of electrically conductive net 901, install boosting pearl 904 on fixed adhesive tape 903, fixed adhesive tape 903 comprises a plurality of and electrically conductive net 901 wall connection's compression strip 905, the thickness numerical value of a plurality of compression strips 905 is the trend setting that the linearity increases up from the one end that is close to restriction glue ring 902 to the one end of keeping away from restriction glue ring 902.

When the insertion head 101 is inserted into the charging port of the vehicle, the restriction rubber ring 902 is firstly squeezed to realize preliminary sealing and fastening, then the compression bar 905 with different thicknesses is gradually contacted to sign in for further fastening, and once the conductive elastic sleeve 301 slides, the boosting bead 904 can play a role in assisting sliding, so that the conductive elastic sleeve 301 can be normally separated from the conductive column 502.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The charging gun is characterized by comprising a gun body (1) and an insertion head (101) arranged at the end part of the gun body (1), wherein a plurality of slots (102) are formed in the insertion head (101), a contact pin (3) is connected in each slot (102), a conductive bar (4) connected with the surface of the insertion head (101) is arranged at one end, close to the gun body (1), of each contact pin (3), and a leakage bullet opening mechanism (5) used for separating the contact pins (3) from the conductive bars (4) is arranged on each conductive bar (4);

the electric leakage bouncing-off mechanism (5) comprises a fixing column (501) and a sensing sleeve (9), the fixing column (501) is positioned in the slot (102), one end of the fixing column is connected with the conductive bar (4), and the other end of the fixing column (501) is sleeved with the contact pin (3); the sensing sleeve (9) is sleeved on the inner wall of the slot (102);

a trigger (6) for clamping the contact pin (3) is arranged on the side wall of one end, close to the gun body (1), of the fixed column (501), and one end, far away from the fixed column (501), of the trigger (6) is connected with the conductive bar (4); the inner wall of the gun body (1) is connected with a sucking and holding device (2), when current flows through the sensing sleeve (9), the sucking and holding device (2) pulls the trigger (6) to move towards one side far away from the conductive bar (4) and releases the contact pin (3), so that the contact pin (3) slides away from the conductive bar (4);

the trigger (6) comprises a plurality of clamping blocks (7) which are arranged on the side wall of one end, close to the conductive bar (4), of a fixing column (501), an embedding table (601) for clamping the contact pin (3) is arranged on the surface of each clamping block (7), a driving sleeve (8) is sleeved on the side wall of one end, far away from the fixing column (501), of each clamping block (7), and the driving sleeve (8) can be driven to move towards the suction holder (2) until the clamping block (7) is bent, so that the insertion table (601) releases the contact pin (3);

the contact pin (3) comprises a conductive elastic sleeve (301) which is sleeved on the side wall of the fixed column (501) and clamped by the embedding table (601), and a push-up spring (302) which is connected with the clamping block (7) and is used for being driven to push the conductive elastic sleeve (301) towards the direction far away from the fixed column (501) is sleeved on the outer wall of the fixed column (501);

the clamping block (7) comprises an elastic block (701) with one end connected with the fixed column (501), one end, far away from the fixed column (501), of the elastic block (701) penetrates through the conductive bar (4) and extends into the gun body (1), a sliding groove (404) used for containing the elastic block (701) to slide freely is formed in the position, corresponding to the elastic block (701), of the side wall of the conductive bar (4), and a bent column (702) inclining towards one side far away from the fixed column (501) is installed at one end, far away from the fixed column (501), of the elastic block (701);

the driving sleeve (8) comprises an electric connection terminal seat (801) connected with the conductive bar (4) and a belt deflection sleeve (802) connected to the side wall of the bent column (702) in a sliding mode, a connecting column (803) is installed between the electric connection terminal seat (801) and the belt deflection sleeve (802), a column body embedding groove (804) tightly attached to the inclined surface of the bent column (702) is formed in the end portion of the belt deflection sleeve (802), and a permanent magnet (805) used for being pulled by the holder (2) is installed on the surface of the electric connection terminal seat (801);

in the process that the permanent magnet (805) slides towards the holder (2), the electric connection terminal base (801) drives the inclined sleeve (802) to slide along the inclined surface of the bent column (702), a column body embedding groove (804) on the inclined sleeve (802) clings to the inclined surface of the bent column (702) and bends the bent column (702), and after the bent column (702) is pushed, the elastic block (701) is driven to enable the embedding table (601) to move together, so that the embedding table (601) is pressed away from the conductive elastic sleeve (301);

the suction holder (2) comprises a terminal strip (201) fixed on the inner wall of the gun body (1), and an electromagnet (202) used for drawing a permanent magnet (805) is installed on the surface of one side, close to the insertion head (101), of the terminal strip (201).

2. The charging gun according to claim 1, wherein the sensing sleeve (9) comprises a conductive net (901) sleeved on the inner wall of the slot (102), a limiting rubber ring (902) in an annular structure is installed at one end, far away from the fixing column (501), of the conductive net (901), a plurality of fixing rubber strips (903) are installed on the inner wall of the conductive net (901), and boosting beads (904) are installed on the fixing rubber strips (903).

3. The charging gun according to claim 2, characterized in that the fixing adhesive tape (903) is composed of a plurality of compression strips (905) connected with the inner wall of the conductive net (901), and the thickness values of the plurality of compression strips (905) are arranged in a linearly increasing trend from one end close to the limiting adhesive ring (902) to one end far away from the limiting adhesive ring (902).

4. A charging gun as claimed in claim 1, characterized in that said fixing posts (501) are composed of a conductive post (502) and an insulating post (503), said conductive post (502) is connected to said conductive bar (4), said insulating post (503) is mounted at one end of said conductive post (502) far from said conductive bar (4); the conductive groove (504) is formed in the axis position of the conductive column (502), the conductive sliding column (505) penetrates through the axis position of the insulating column (503), one end of the conductive sliding column (505) is connected with the inner wall of the conductive elastic sleeve (301), and the other end of the conductive sliding column (505) extends into the conductive groove (504).

5. The charging gun according to claim 1, wherein a connecting copper sleeve (203) is arranged on a side surface of the terminal block (201) far away from the insertion head (101), a wire insertion column (204) is connected in the connecting copper sleeve (203), a wire end block (205) is connected to one end of the wire insertion column (204) far away from the terminal block (201), and a protector (206) connected with the terminal block (201) is installed on a side wall of the wire end block (205).

6. The charging gun according to claim 5, wherein the protector (206) comprises a heat conducting sheet (208) wrapped on a side wall of the lead terminal row (205), and further comprises an expansion body (207) connected with the heat conducting sheet (208), a sealing telescopic column (209) penetrating through the gun body (1) to an outer surface is mounted on the side wall of the heat conducting sheet (208), the side wall of the sealing telescopic column (209) is connected with the expansion body (207), and a guide sleeve (210) connected with the surface of the terminal row (201) is sleeved on the outer side of the expansion body (207).

7. The charging gun according to claim 1, wherein the conductive bar (4) comprises an insulating block (401) connected with the end face of the insertion head (101), a plurality of terminal connecting blocks (402) connected with a fixed column (501) are mounted on the insulating block (401), a reset push block (403) used for pulling the bent column (702) and pushing the belt deviation sleeve (802) back to an initial position is mounted on the surface of the insulating block (401), and one end side wall of the reset push block (403) far away from the insulating block (401) is connected with the bent column (702).