Safe charging gun for charging pile

Abstract

The invention provides a safety charging gun for a charging pile, and relates to the technical field of charging guns for charging piles, the safety charging gun comprises a charging gun part, and the charging gun part is provided with five AC grounding terminal pieces; the five AC grounding terminal pieces have the same structure. The five AC grounding terminal pieces are respectively provided with a protective cleaning piece. The five protective cleaning pieces are respectively used for cleaning five alternating current grounding terminal pieces; the five AC grounding terminal pieces are respectively provided with a circle of detection spring piece. The device can be used for expanding and cleaning the charging seat power connection elastic piece and can automatically contract, the situation that the charging seat power connection elastic piece is extruded and damaged and virtual connection of the charging seat power connection elastic piece is caused is avoided, the state of a charging gun is conveniently detected, and use safety is guaranteed. The problems that the power connection quality of a safety charging gun for a current charging pile and a power connection elastic piece of a charging base needs to depend on a vehicle for electrical detection, virtual connection and other conditions are not convenient to directly detect when power is not on, and potential safety hazards exist are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging guns for charging piles, and in particular to a safe charging gun for a charging pile. Background Art

[0002] The charging gun is the part that is connected to the charging port of new energy vehicles. It is usually a national standard seven-hole gun head with a ground wire in the middle. There is also a lock designed on the charging gun head, which can be locked with the car to prevent it from falling off and being pulled out by mistake. The two terminals with smaller diameters on the top of the national standard seven-hole gun head are signal line terminals, which are mainly used to prompt the connection status. The three middle terminals are AC terminals and ground terminals, and the two lower terminals are spare terminals. The current safety charging gun for charging piles is not convenient for automatically cleaning the charging seat power connection spring when connecting to the car charging seat. At the same time, the power connection quality of the charging seat power connection spring needs to rely on the vehicle for detection. In the event of a false connection, it is not convenient to directly prompt when the power is not on, which poses a safety hazard. At the same time, the charging gun will wear out after long-term use. Excessive wear will affect the terminal insertion accuracy and easily affect the locking of the charging gun lock hook, which is not convenient for automatic compensation for the wear of the charging gun. Summary of the invention

[0003] The disclosed embodiments relate to a safety charging gun for a charging pile, wherein a cleaning detection component can be used to expand and clean the charging seat power connection spring sheet, and can automatically contract at the same time to avoid squeezing and damaging the charging seat power connection spring sheet and causing a false connection of the charging seat power connection spring sheet, and is also convenient for detecting the status of the charging gun to ensure safety in use, so as to solve the problem that the quality of power connection between the current safety charging gun for a charging pile and the charging seat power connection spring sheet needs to rely on the vehicle for detection, and it is not convenient to directly detect when power is not turned on when a false connection occurs, which poses a safety hazard.

[0004] The present invention provides a safe charging gun for a charging pile, comprising a charging gun part, on which five AC grounding terminal parts are installed; the structures of the five AC grounding terminal parts are the same; protective cleaning parts are respectively installed on the five AC grounding terminal parts; the five protective cleaning parts are respectively used to clean the five AC grounding terminal parts; a circle of detection spring pieces are respectively installed on the five AC grounding terminal parts; the detection spring pieces are used to detect the deformation of the charging seat power connection spring piece; cleaning detection parts are respectively installed on the five AC grounding terminal parts; the five cleaning detection parts are respectively used to detect the deflection of the charging gun part Slanted; the five cleaning detection parts are respectively installed with spring cleaning parts; the five spring cleaning parts are respectively used to wipe and detect the charging seat power connection springs; the charging gun part is installed with a wear compensation part; the wear compensation part is used to expand and compensate for the wear of the charging gun part; the charging gun part includes: a charging gun handle, an indicator light and a charging head, and the charging head is fixedly installed at the front end of the charging gun handle; two communication terminals are provided above the charging head; the charging head is electrically connected to the charging pile; an indicator light is fixedly installed on the charging gun handle, and ten lamp beads are provided inside the indicator light; the charging head is used to be inserted into the electric vehicle charging seat.

[0005] In at least some embodiments, the AC grounding terminal includes: a power terminal and a communication detection column, the power terminal is fixedly installed on the inner side of the charging head; a circle of through grooves is provided on the power terminal; a communication detection column is fixedly sleeved on the power terminal; the power terminal and the communication detection column are insulated.

[0006] In at least some embodiments, the charging gun part further includes: an airbag limiting shell and a positioning iron sheet. The airbag limiting shell is fixedly installed on the charging head, and a positioning iron sheet is fixedly installed on the airbag limiting shell; the airbag limiting shell is located inside the charging gun handle.

[0007] In at least some embodiments, the wear compensation part also includes: a compensating expansion ring, an airbag spring and a voltage-stabilizing electromagnet, wherein the compensating expansion ring is fixedly sleeved on the outside of the charging head; the compensating expansion ring is used to be attached to the charging seat after expansion; the compensating expansion ring passes through the charging head through a hose and is connected to the extrusion airbag; two airbag springs are fixedly installed inside the extrusion airbag, and the two airbag springs are respectively located between the extrusion disk and the airbag limit shell; a voltage-stabilizing electromagnet is fixedly installed on the inside of the extrusion disk, and the voltage-stabilizing electromagnet is electrically connected to five micro switches; the voltage-stabilizing electromagnet is used to position the iron sheet through electromagnetic attraction.

[0008] In at least some embodiments, the wear compensation part includes: a compensation propulsion shaft, an extrusion disk and an extrusion airbag. Four compensation propulsion shafts are provided, and the four compensation propulsion shafts are respectively slidably installed on the charging head; an extrusion disk is fixedly installed on the compensation propulsion shaft; the extrusion disk is located inside the airbag limiting shell; an extrusion airbag is fixedly installed on the extrusion disk, and the side of the extrusion airbag is attached to the inner side of the airbag limiting shell.

[0009] In at least some embodiments, the detection spring piece includes: a fixed spring piece and a power connection piece, and the fixed spring pieces are fixedly installed on the inner sides of a circle of through grooves provided on the power connection terminal; a circle of the fixed spring pieces are insulated from the power connection terminal; a circle of the fixed spring pieces are fixedly installed on the inner sides of the fixed spring pieces; a circle of power connection pieces, a communication detection column and the lamp beads inside the indicator light are connected in series with a power supply; the fixed spring piece is used to fit the power connection spring piece of the charging base.

[0010] In at least some embodiments, the cleaning detection component also includes: a micro switch and an expansion claw piece. The micro switch is fixedly installed on the inner side of the cleaning slider, and the micro switch is used to squeeze the inner side of the power terminal; the micro switch is electrically connected to the lamp beads inside the indicator light; the ten lamp beads inside the indicator light are respectively used to indicate the on and off of five circles of power terminals and five micro switches; a circle of expansion claw pieces is fixedly installed on the cleaning slider, and one circle of expansion claw pieces are elastic bending structures; the outer contour of one circle of expansion claw pieces exceeds the diameter of the power terminal.

[0011] In at least some embodiments, the protective cleaning member includes: a retraction ring, a wiping rubber ring and a return spring, wherein the retraction ring is slidably sleeved on the charging head; a wiping rubber ring is fixedly installed on the inner side of the retraction ring, and the wiping rubber ring is sleeved on the outer side of the power terminal; a return spring is fixedly installed on the inner side of the retraction ring, and the return spring is sleeved inside the charging head; the end of the return spring is fixedly installed on the inner side of the charging head; the wiping rubber ring is used to wipe the outer side of the power terminal.

[0012] In at least some embodiments, the spring-loaded cleaning component includes: a retractable pressing head and a cleaning cotton cover, wherein a retractable pressing head is fixedly installed on the middle part of the cleaning slider; the retractable pressing head is used to press the inner side of the charging seat; the edge of the cleaning cotton cover is fixedly installed on the end of the power terminal; the inner side of the cleaning cotton cover is fitted with a circle of expansion claws; the end of the retractable pressing head is fixedly installed on the inner side of the cleaning cotton cover; the cleaning cotton cover is used to wipe the power spring of the charging seat.

[0013] In at least some embodiments, the cleaning detection component includes: a cleaning slider and a retraction spring, wherein the cleaning slider is slidably installed at the end of the power terminal; a retraction spring is fixedly installed at the tail of the cleaning slider, and the end of the retraction spring is connected to the inner side of the power terminal; the retraction spring is located on the inner side of the power terminal.

[0014] The present invention provides a safe charging gun for a charging pile, which has the following beneficial effects:

[0015] The present invention adopts a protective cleaning piece, which can be used to automatically clean the connecting terminal when the charging head is inserted into the electric vehicle charging seat. At the same time, when the connecting terminal is unplugged from the electric vehicle charging seat, it can automatically reset, which can be used to protect the connecting terminal, increase the service life of the connecting terminal, and also play a waterproof role.

[0016] In addition, the detection spring piece used can intuitively understand the power connection quality of the power connection spring piece inside the charging seat. This structure uses a circle of fixed spring pieces to correspond to a circle of power connection spring pieces on the outside of each terminal, which can ensure the comprehensiveness of the detection and intuitively judge whether the power connection spring piece inside the charging seat has hidden dangers such as deformation and breakage. When the charging head is inserted into the charging seat, the power connection quality is detected to prevent false connection and avoid relying on the vehicle's electrical detection components to detect the problem of power supply, thereby reducing safety hazards.

[0017] In addition, the spring cleaning piece can be used to clean the connecting spring piece when the charging head is inserted into the charging base. At the same time, it can automatically retract after being inserted into the charging base, which can prevent the structure from blocking the connecting spring piece of the charging base, causing poor contact between the connecting spring piece and the connecting terminal. The micro switch can be used to detect the stability of the charging head inserted into the charging base, to prevent the charging head from being excessively skewed in the charging base, causing false connection and other safety hazards to go undetected.

[0018] In addition, the wear compensation part can be used to automatically control the expansion of the compensation expansion ring when the charging head is inserted into the charging base, so that it can fit more closely to the inner ring of the charging base and also play a sealing role. It can compensate for the wear size of the charging head after long-term use and improve the stability of the charging head during charging and plugging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0020] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0021] In the attached picture:

[0022] Figure 1 A schematic diagram showing the overall structure of a safety charging gun for a charging pile of the present application is shown;

[0023] Figure 2 A schematic diagram showing the bottom structure of a safety charging gun for a charging pile of the present application is shown;

[0024] Figure 3 A schematic diagram showing the overall structure of the charging head of the present application;

[0025] Figure 4 A cross-sectional view showing the internal structure of the charging gun portion of the present application;

[0026] Figure 5 This application shows Figure 4 A magnified view of the structure of the middle B region;

[0027] Figure 6 A schematic diagram showing the structure of the AC grounding terminal of the present application is shown;

[0028] Figure 7 A schematic diagram showing the structure of the protective cleaning member of the present application is shown;

[0029] Figure 8 This application shows Figure 5 A magnified view of the structure of the middle C region;

[0030] Fig. 9 A schematic diagram showing the structure of the spring cleaning element of the present application is shown;

[0031] Fig.10 This application shows Fig. 9 A magnified view of the structure of the middle D region;

[0032] Fig.11 A schematic diagram showing the structure of the wear compensation member of the present application is shown;

[0033] Fig.12 A schematic diagram showing the positioning iron sheet structure of the present application is shown;

[0034] Fig.13 This application shows Fig.12 Enlarged view of the structure of region E in the middle.

[0035] List of reference numerals:

[0036] 1. Charging gun part; 101. Charging gun handle; 1011. Indicator light; 102. Charging head; 103. Airbag limit shell; 1031. Positioning iron sheet; 2. AC grounding terminal; 201. Power terminal; 202. Communication detection column; 3. Protective cleaning part; 301. Retraction ring; 302. Wiping rubber ring; 303. Reset spring; 4. Detection spring piece; 401. Fixed spring; 402. Power sheet; 5. Cleaning detection part; 501. Cleaning slider; 502. Retraction spring; 503. Micro switch; 504. Expansion claw; 6. Spring cleaning part; 601. Retraction top pressure head; 602. Cleaning cotton cover; 7. Wear compensation part; 701. Compensation propulsion shaft; 702. Extrusion disk; 703. Extrusion airbag; 704. Compensation expansion ring; 705. Airbag spring; 706. Voltage stabilizing electromagnet. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment 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.

[0038] Example 1: Please refer to Figures 1 to 13 :

[0039] The present invention proposes a safe charging gun for a charging pile, comprising a charging gun part 1, on which five AC grounding terminal parts 2 are installed; the structures of the five AC grounding terminal parts 2 are the same; protective cleaning parts 3 are respectively installed on the five AC grounding terminal parts 2; the five protective cleaning parts 3 are respectively used to clean the five AC grounding terminal parts 2; a circle of detection spring pieces 4 are respectively installed on the five AC grounding terminal parts 2; the detection spring pieces 4 are used to detect the deformation of the charging seat power connection spring piece; cleaning detection parts 5 are respectively installed on the five AC grounding terminal parts 2; the five cleaning detection parts 5 are respectively used to detect the skewness of the charging gun part 1; the five cleaning detection parts 5 Shrapnel cleaning pieces 6 are respectively installed; five shrapnel cleaning pieces 6 are respectively used to wipe and detect the charging seat power connection shrapnel; a wear compensation piece 7 is installed on the charging gun part 1; the wear compensation piece 7 is used to expand and compensate for the wear of the charging gun part 1; the charging gun part 1 includes: a charging gun handle 101, an indicator light 1011 and a charging head 102, and the charging head 102 is fixedly installed at the front end of the charging gun handle 101; two communication terminals are arranged above the charging head 102; the charging head 102 is electrically connected to the charging pile; an indicator light 1011 is fixedly installed on the charging gun handle 101, and ten lamp beads are arranged inside the indicator light 1011; the charging head 102 is used to be inserted into the electric vehicle charging seat.

[0040] In the embodiment of the present disclosure, the charging gun part 1 also includes: an airbag limiting shell 103 and a positioning iron sheet 1031. The airbag limiting shell 103 is fixedly installed on the charging head 102, and the positioning iron sheet 1031 is fixedly installed on the airbag limiting shell 103; the airbag limiting shell 103 is located inside the charging gun handle 101; the AC grounding terminal part 2 includes: a power terminal 201 and a communication detection column 202, the power terminal 201 is fixedly installed on the inner side of the charging head 102; a circle of communication detection column 202 is provided on the power terminal 201 The power terminal 201 is fixedly sleeved with a communication detection column 202; the power terminal 201 and the communication detection column 202 are insulated; the protective cleaning member 3 includes: a retraction ring 301, a wiping rubber ring 302 and a reset spring 303, the retraction ring 301 is slidably sleeved on the charging head 102; the wiping rubber ring 302 is fixedly installed on the inner side of the retraction ring 301, and the wiping rubber ring 302 is sleeved on the outer side of the power terminal 201; the reset spring 303 is fixedly installed on the inner side of the retraction ring 301, The reset spring 303 is sleeved inside the charging head 102; the end of the reset spring 303 is fixedly installed on the inner side of the charging head 102; the wiping rubber ring 302 is used to wipe the outer side of the power terminal 201. The protective cleaning member 3 can be used to automatically clean the power terminal 201 when the charging head 102 is inserted into the electric vehicle charging seat. At the same time, when the power terminal 201 is unplugged from the electric vehicle charging seat, the retraction ring 301 can be automatically reset under the squeezing of the reset spring 303, which can be used to protect the power terminal 201 and increase the service life of the power terminal 201. It also plays a waterproof role. The communication detection column 202 can be used for the detection of the power spring of the electric vehicle charging seat. The structure is more reasonable and can improve the safety of the structure. The cylindrical structure of the electric vehicle charging seat can squeeze the retraction ring 301. As the charging head 102 is inserted, the retraction ring 301 is squeezed and slides inward, compressing the reset spring 303, and the wiping rubber ring 302 will scrape the power terminal 201 for cleaning.

[0041] In the disclosed embodiment, the detection spring piece 4 includes: a fixed spring piece 401 and a power connection piece 402. The fixed spring pieces 401 are fixedly installed on the inner sides of a circle of through grooves provided on the power connection terminal 201; the circle of fixed spring pieces 401 are insulated from the power connection terminal 201; the inner sides of the circle of fixed spring pieces 401 are fixedly installed with power connection pieces 402; the circle of power connection pieces 402, the communication detection column 202 and the lamp beads inside the indicator light 1011 are connected in series with the power supply; the fixed spring piece 401 is used to fit the power connection spring piece of the charging seat; the detection spring piece 4 used has a simple structure and can be used to intuitively understand the power connection quality of the power connection spring piece inside the charging seat by means of displacement detection. This structure uses a circle of fixed spring pieces 401 to correspond to a circle of power connection spring pieces on the outside of each terminal, which can ensure the comprehensiveness of the detection. The structure can determine whether the power connection spring piece inside the charging seat has hidden dangers such as deformation by squeezing the fixed spring piece 401 through the power connection spring piece inside the charging seat after the fixed spring piece 401 is inserted into the charging seat. This structure can detect the power connection quality when the charging head 102 is inserted into the charging seat to prevent false connection and avoid relying on the vehicle's electrical detection components to detect the problem of power supply for detection. This structure better reduces safety hazards and realizes physical detection of the power connection status. When some of the power connection spring pieces inside the charging seat are deformed, broken or have reduced elasticity and cannot fully fit the power connection terminal 201, the fixed spring piece 401 cannot be squeezed to drive the power connection piece 402 to contact the communication detection column 202, and the corresponding lamp beads on the indicator light 1011 cannot realize the lighting prompt of the passage, which is convenient for users to understand.

[0042] In the disclosed embodiment, the cleaning detection member 5 includes: a cleaning slider 501 and a retraction spring 502, the cleaning slider 501 is slidably mounted on the end of the power terminal 201; the retraction spring 502 is fixedly mounted on the tail of the cleaning slider 501, and the end of the retraction spring 502 is connected to the inner side of the power terminal 201; the retraction spring 502 is located on the inner side of the power terminal 201; the cleaning detection member 5 also includes: a micro switch 503 and an expansion claw piece 504, the micro switch 503 is fixedly mounted on the inner side of the cleaning slider 501, and the micro switch 503 is used to squeeze the inner side of the power terminal 201; the micro switch 503 is electrically connected to the lamp beads inside the indicator light 1011; the ten lamp beads inside the indicator light 1011 are respectively used to prompt the five circles of power strips 402 and the five The micro switch 503 is turned on and off; a circle of expansion claws 504 is fixedly installed on the cleaning slider 501, and the circle of expansion claws 504 are elastic bending structures; the outer contour of the circle of expansion claws 504 exceeds the diameter of the power terminal 201; the spring cleaning member 6 includes: a retracting pressing head 601 and a cleaning cotton cover 602, and a retracting pressing head 601 is fixedly installed in the middle of the cleaning slider 501; the retracting pressing head 601 is used to press the inside of the charging seat; the edge of the cleaning cotton cover 602 is fixedly installed at the end of the power terminal 201; the inner side of the cleaning cotton cover 602 is attached to the circle of expansion claws 504; the end of the retracting pressing head 601 is fixedly installed on the inside of the cleaning cotton cover 602; the cleaning cotton cover 602 is used to wipe the charging seat power spring, using a spring cleaning member 6 can be used to clean the connection spring piece when the charging head 102 is inserted into the charging seat, ensuring that the surface of the connection spring piece in the charging seat is clean, avoiding impurities such as sand and stone particles affecting the connection quality and causing false connection. This structure can automatically shrink after being inserted into the charging seat, avoiding this structure from blocking the connection spring piece of the charging seat, causing poor contact between the connection spring piece and the connection terminal 201, ensuring the rationality of this structure, and making the connection of this structure safer. Under the expansion support of the expansion claw piece 504, the outline of the cleaning cotton cover 602 is larger than the diameter of the connection terminal 201, ensuring that the connection spring piece of the charging seat is first wiped and cleaned by the cleaning cotton cover 602. When the charging head 102 is fully inserted into the charging seat, the retracted top pressure head 601 is squeezed by the inner side of the charging seat, driving The cleaning slider 501 moves inward and compresses the retraction spring 502. At this time, the expansion claw piece 504 is also driven to move inward. In cooperation with the squeezing of the inner edge of the power terminal 201, a circle of expansion claw pieces 504 will also shrink inward and reduce the diameter. At this time, the contour of the cleaning cotton cover 602 is also shrunk and no longer fits and squeezes the power connection spring piece of the charging seat, ensuring that the power connection spring piece of the charging seat can fit the power terminal 201. At the same time, the micro switch 503 can be used to detect the stability of the charging head 102 inserted into the charging seat, and detect whether the charging head 102 is skewed due to wear and other factors, so as to avoid the charging head 102 being excessively skewed in the charging seat to cause false connection and other safety hazards that are not discovered. The position of the charging head 102 can be prompted in real time to ensure the rationality of the structure.

[0043] Embodiment 2, on the basis of embodiment 1, the wear compensation part 7 comprises: a compensation propulsion shaft 701, an extrusion disc 702 and an extrusion airbag 703, four compensation propulsion shafts 701 are provided, and the four compensation propulsion shafts 701 are respectively slidably mounted on the charging head 102; an extrusion disc 702 is fixedly mounted on the compensation propulsion shaft 701; the extrusion disc 702 is located inside the airbag limiting shell 103; an extrusion airbag 703 is fixedly mounted on the extrusion disc 702, and the side of the extrusion airbag 703 is attached to the airbag limiting shell 103 Inside; the wear compensation part 7 also includes: a compensation expansion ring 704, an airbag spring 705 and a voltage-stabilizing electromagnet 706, the compensation expansion ring 704 is fixedly sleeved on the outside of the charging head 102; the compensation expansion ring 704 is used to be attached to the charging seat after expansion; the compensation expansion ring 704 passes through the charging head 102 through a hose and is connected to the extrusion airbag 703; two airbag springs 705 are fixedly installed inside the extrusion airbag 703, and the two airbag springs 705 are respectively located between the extrusion disk 702 and the airbag limit shell 103; A voltage-stabilizing electromagnet 706 is fixedly installed on the inner side of the extrusion disk 702, and the voltage-stabilizing electromagnet 706 is electrically connected to the five micro switches 503; the voltage-stabilizing electromagnet 706 is used to pass through the electromagnetic suction positioning iron sheet 1031. The wear compensation part 7 can be used to automatically control the expansion of the compensating expansion ring 704 when the charging head 102 is inserted into the charging seat, which can better fit the inner ring of the charging seat and also play a sealing role. This structure can compensate for the wear size of the charging head 102 after long-term use, and improve the stability of the charging head 102 during charging and plugging. When the charging head 102 is inserted into the charging seat, as the insertion continues, the compensating propulsion shaft 701 can be driven to squeeze the charging seat. At this time, the compensating propulsion shaft 701 will drive the extrusion disk 702 to retreat and squeeze the airbag 703, and the compensating expansion ring 704 will be inflated and expand to fit the inner wall of the charging seat. When the five micro switches 503 can be squeezed through the passage by the power terminal 201, the voltage-stabilizing electromagnet 706 will be controlled to pass through the electromagnetic suction positioning iron sheet 1031 for positioning to ensure stable air pressure.

[0044] The working principle of this embodiment is as follows: first, remove the charging gun handle 101 from the charging pile, hold the charging gun handle 101 and insert the charging head 102 into the electric vehicle charging seat. At this time, the locking hook on the charging gun handle 101 can be inserted into the charging seat and locked in a limit position. At this time, the charging head 102 can drive the power terminal 201 to fit and connect the power spring of the charging seat to power on. During the process, the cylindrical structure of the electric vehicle charging seat itself can squeeze the retraction ring 301. As the charging head 102 is inserted, the retraction ring 301 is squeezed and slides inward, compressing the return spring 303. The wiping rubber ring 302 will scrape the power terminal 201 for cleaning. After the subsequent charging is completed, when the charging head 102 is pulled out, the retraction ring 301 can be squeezed by the return spring 303 to reset to the end of the power terminal 201 for protection; when the charging head 102 is inserted When the charging base is used, the fixed spring piece 401 is also driven to move. The charging base power spring piece will elastically fit the power terminal 201 under normal conditions, and then squeeze the arc-shaped fixed spring piece 401 protruding from the outside of the power terminal 201. The fixed spring piece 401 will be elastically deformed after being compressed, driving the power sheet 402 to fit the communication detection column 202. When a circle of power sheets 402 are squeezed and fit the communication detection column 202, the corresponding lamp beads on the indicator light 1011 will be powered on and light up for prompting. On the contrary, when some power sheets inside the charging base are deformed, broken or their elasticity is reduced and cannot completely fit the power terminal 201, the fixed spring piece 401 cannot be squeezed to drive the power sheet 402 to contact the communication detection column 202, and the corresponding lamp beads on the indicator light 1011 cannot realize the lighting of the passage, which is convenient for users to understand.

[0045] When the charging head 102 is inserted into the charging seat, the cleaning cotton cover 602 can be driven to insert into the power-connecting spring of the charging seat for wiping. Under the expansion support of the expansion claw piece 504, the outline of the cleaning cotton cover 602 is larger than the diameter of the power terminal 201, which can ensure that the power-connecting spring of the charging seat is first wiped and cleaned by the cleaning cotton cover 602. When the charging head 102 is fully inserted into the charging seat, the retracting top pressure head 601 is squeezed by the inner side of the charging seat, driving the cleaning slider 501 to move inward and compressing the retraction spring 502. At this time, the expansion claw piece 504 is also driven to move inward, and moves inward to cooperate with the squeezing of the inner edge of the power terminal 201, and a circle of expansion The claw piece 504 will also shrink inward and reduce its diameter. At this time, the outline of the cleaning cotton cover 602 is also shrunk and no longer fits and squeezes the power connection spring piece of the charging seat, ensuring that the power connection spring piece of the charging seat can fit the power terminal 201. At the same time, the micro switch 503 can be used to detect the stability of the charging head 102 inserted into the charging seat and whether the charging head 102 is skewed due to wear and other factors, so as to avoid the charging head 102 being excessively skewed in the charging seat, causing virtual connection and other safety hazards to go undetected. After the retracted top pressure head 601 is squeezed by the charging seat, the micro switch 503 is driven to move at the same time to fit and squeeze the inner side of the power terminal 201. The five micro switches The switches 503 can be squeezed by the power terminals 201, and the lamp beads on the control indicator light 1011 light up for prompting. When some of the lamp beads are off, it means that some of the micro switches 503 are no longer squeezed by the power terminals 201, indicating that the micro switches 503 have undergone excessive displacement, and the position of the charging head 102 is no longer standard, ensuring that the fit between the charging head 102 and the charging seat of this structure can be prompted in real time, and once it is no longer fit, it will automatically prompt; when the charging head 102 is inserted into the charging seat, as it continues to be inserted, it can drive the compensation propulsion shaft 701 to squeeze the charging seat, and at this time the compensation propulsion shaft 701 will drive the extrusion disk 702 to retreat, The extrusion airbag 703 set can be squeezed, and the extrusion airbag 703 can be squeezed to exhaust the air, and then filled with the compensating expansion ring 704 to expand and fit the inner wall of the charging seat. At the same time, when the five micro switches 503 can be squeezed by the power terminals 201 to achieve passage, the voltage-stabilizing electromagnet 706 will be controlled to be positioned through the electromagnetic suction positioning iron sheet 1031 to ensure stable air pressure and greater practicality. When the charging head 102 is pulled out, the micro switch 503 is no longer squeezed, and the voltage-stabilizing electromagnet 706 is controlled to be powered off, which is convenient for the airbag spring 705 to squeeze the extrusion disk 702 to reset, and shrink the extrusion airbag 703 to facilitate the pulling out of the charging head 102.

[0046] In this article, there are a few points to note:

[0047] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0048] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0049] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A safe charging gun for a charging pile, comprising a charging gun part (1), wherein five AC grounding terminal parts (2) are installed on the charging gun part (1); characterized in that: The structures of the five AC grounding terminal pieces (2) are the same; protective cleaning pieces (3) are respectively installed on the five AC grounding terminal pieces (2); the five protective cleaning pieces (3) are respectively used to clean the five AC grounding terminal pieces (2); A circle of detection spring pieces (4) is respectively installed on each of the five AC grounding terminal pieces (2); the detection spring pieces (4) are used to detect the deformation of the charging seat power connection spring pieces; Cleaning detection components (5) are respectively installed on the five AC grounding terminal components (2); the five cleaning detection components (5) are respectively used to detect whether the charging gun part (1) is skewed; The five cleaning detection components (5) are respectively provided with spring-type cleaning components (6); the five spring-type cleaning components (6) are respectively used for wiping and detecting the spring-type connecting components of the charging seat; A wear compensation component (7) is installed on the charging gun part (1); the wear compensation component (7) is used to expand and compensate for the wear of the charging gun part (1); The charging gun part (1) comprises: a charging gun handle (101), an indicator light (1011) and a charging head (102); the front end of the charging gun handle (101) is fixedly mounted with the charging head (102); two communication terminals are arranged above the charging head (102); the charging head (102) is electrically connected to a charging pile; the charging gun handle (101) is fixedly mounted with an indicator light (1011), and ten lamp beads are arranged inside the indicator light (1011); the charging head (102) is used to be inserted into a charging seat of an electric vehicle.

2. A safe charging gun for a charging pile according to claim 1, characterized in that: The charging gun part (1) further comprises: an airbag limiting shell (103) and a positioning iron sheet (1031); the airbag limiting shell (103) is fixedly mounted on the charging head (102); and the positioning iron sheet (1031) is fixedly mounted on the airbag limiting shell (103); the airbag limiting shell (103) is located inside the charging gun handle (101).

3. A safe charging gun for a charging pile according to claim 2, characterized in that: The AC grounding terminal piece (2) comprises: an electric terminal (201) and a communication detection column (202); the electric terminal (201) is fixedly mounted on the inner side of the charging head (102); a circle of through grooves is provided on the electric terminal (201); the communication detection column (202) is fixedly sleeved on the electric terminal (201); and the electric terminal (201) and the communication detection column (202) are insulated from each other.

4. A safety charging gun for a charging pile according to claim 3, characterized in that: The protective cleaning member (3) comprises: a retraction ring (301), a wiping rubber ring (302) and a reset spring (303); the retraction ring (301) is slidably sleeved on the charging head (102); the wiping rubber ring (302) is fixedly mounted on the inner side of the retraction ring (301), and the wiping rubber ring (302) is sleeved on the outer side of the power terminal (201); the reset spring (303) is fixedly mounted on the inner side of the retraction ring (301), and the reset spring (303) is sleeved inside the charging head (102); the end of the reset spring (303) is fixedly mounted on the inner side of the charging head (102); the wiping rubber ring (302) is used to wipe the outer side of the power terminal (201).

5. A safe charging gun for a charging pile according to claim 3, characterized in that: The detection spring piece (4) comprises: a fixed spring piece (401) and a power connection piece (402); the fixed spring pieces (401) are fixedly mounted on the inner side of a circle of through grooves provided on the power connection terminal (201); the fixed spring pieces (401) are insulated from the power connection terminal (201); the power connection pieces (402) are fixedly mounted on the inner side of a circle of fixed spring pieces (401); the power connection pieces (402), the communication detection column (202) and the lamp beads inside the indicator light (1011) are connected in series to a power source; the fixed spring piece (401) is used to fit the power connection spring piece of the charging seat.

6. A safe charging gun for a charging pile according to claim 3, characterized in that: The cleaning detection member (5) comprises: a cleaning slider (501) and a retraction spring (502); the cleaning slider (501) is slidably mounted on the end of the power terminal (201); a retraction spring (502) is fixedly mounted on the tail of the cleaning slider (501), and the end of the retraction spring (502) is connected to the inner side of the power terminal (201); the retraction spring (502) is located on the inner side of the power terminal (201).

7. A safe charging gun for a charging pile according to claim 6, characterized in that: The cleaning detection member (5) further comprises: a micro switch (503) and an expansion claw piece (504); the micro switch (503) is fixedly mounted on the inner side of the cleaning slider (501), and the micro switch (503) is used to squeeze the inner side of the power terminal (201); the micro switch (503) is electrically connected to the lamp beads inside the indicator light (1011); the ten lamp beads inside the indicator light (1011) are respectively used to indicate the connection and disconnection of the five circles of power terminals (402) and the five micro switches (503); a circle of expansion claw pieces (504) is fixedly mounted on the cleaning slider (501), and the circle of expansion claw pieces (504) are respectively elastic bending structures; the outer contour of the circle of expansion claw pieces (504) exceeds the diameter of the power terminal (201).

8. A safe charging gun for a charging pile according to claim 7, characterized in that: The spring-type cleaning member (6) comprises: a retractable pressing head (601) and a cleaning cotton cover (602); the retractable pressing head (601) is fixedly mounted in the middle of the cleaning slider (501); the retractable pressing head (601) is used to press the inner side of the charging seat; the edge of the cleaning cotton cover (602) is fixedly mounted on the end of the power terminal (201); the inner side of the cleaning cotton cover (602) is fitted with a circle of expansion claws (504); the end of the retractable pressing head (601) is fixedly mounted on the inner side of the cleaning cotton cover (602); the cleaning cotton cover (602) is used to wipe the charging seat power spring.

9. A safe charging gun for a charging pile according to claim 7, characterized in that: The wear compensation part (7) comprises: a compensation propulsion shaft (701), an extrusion disk (702) and an extrusion airbag (703); four compensation propulsion shafts (701) are provided, and the four compensation propulsion shafts (701) are respectively slidably mounted on the charging head (102); the extrusion disk (702) is fixedly mounted on the compensation propulsion shaft (701); the extrusion disk (702) is located inside the airbag limiting shell (103); the extrusion airbag (703) is fixedly mounted on the extrusion disk (702), and the side surface of the extrusion airbag (703) is attached to the inner side of the airbag limiting shell (103).

10. A safe charging gun for a charging pile according to claim 9, characterized in that: The wear compensation part (7) further comprises: a compensation expansion ring (704), an airbag spring (705) and a voltage-stabilizing electromagnet (706); the compensation expansion ring (704) is fixedly sleeved on the outside of the charging head (102); the compensation expansion ring (704) is used to be attached to the charging seat after expansion; the compensation expansion ring (704) passes through the charging head (102) through a hose and is connected to the extrusion airbag (703); two airbag springs (705) are fixedly installed inside the extrusion airbag (703), and the two airbag springs (705) are respectively located between the extrusion disk (702) and the airbag limiting shell (103); a voltage-stabilizing electromagnet (706) is fixedly installed on the inside of the extrusion disk (702), and the voltage-stabilizing electromagnet (706) is electrically connected to five micro switches (503); the voltage-stabilizing electromagnet (706) is used to electromagnetically attract and position the iron sheet (1031).

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