Electric vehicle charging plug protection device

Abstract

The application relates to an electric automobile charging plug protection device and relates to the technical field of a gun hanging seat, which comprises a gun hanging seat, a plurality of silica gel sleeves are arranged on the gun hanging seat, the silica gel sleeves correspond to the terminals on a charging gun one by one, the silica gel sleeves can be sleeved on the terminals and wrap the terminals, the silica gel sleeves are composed of a plurality of wrapping petals which are uniformly arranged in the circumferential direction, the wrapping petals can be separated from each other, and the gun hanging seat is provided with opening and closing mechanisms corresponding to the silica gel sleeves one by one, the opening and closing mechanisms are used for driving the wrapping petals of the corresponding silica gel sleeves to combine or separate. The application has the effect that the terminals of the charging gun can be prevented from being in contact with air for a long time, oxidation is avoided, and poor contact is caused.

Description

Technical Field

[0001] This application relates to the field of gun holder technology, and in particular to a protection device for electric vehicle charging plugs. Background Technology

[0002] With the increasing popularity of electric vehicles, the reliability and durability of charging equipment have become crucial issues. As a key component of charging equipment, the charging gun's terminals are prone to oxidation when exposed to air for extended periods, leading to problems such as poor contact and increased resistance, which affect charging efficiency and safety.

[0003] Common solutions in the prior art include: 1. Using gold-plated or silver-plated terminals to improve oxidation resistance, but this is costly and still cannot completely prevent oxidation; 2. Regularly cleaning and maintaining the terminals, but this increases labor costs and downtime. Utility Model Content

[0004] In order to minimize the risk of oxidation and poor contact caused by prolonged contact between the charging gun terminals and the air, this application provides a protection device for electric vehicle charging plugs.

[0005] The electric vehicle charging plug protection device provided in this application adopts the following technical solution: An electric vehicle charging plug protection device includes a gun holder with several silicone sleeves on it. Each silicone sleeve corresponds to a terminal on the charging gun and can be fitted over and wrapped around the terminal.

[0006] By adopting the above technical solution, the silicone sleeve is placed on the terminal and wrapped around the terminal, directly isolating the terminal from contact with air and moisture, reducing the risk of terminal oxidation, and minimizing the long-term contact between the charging gun terminal and the air, which could lead to poor contact due to oxidation. Regular cleaning and maintenance are not required, reducing operating costs and downtime. At the same time, the silicone has a certain degree of elasticity, which can adapt to slight deviations in terminal size and improve the sealing performance.

[0007] Preferably, the silicone sleeve is composed of several flaps evenly arranged in the circumferential direction, the flaps can be separated from each other, and the gun holder is provided with an opening and closing mechanism corresponding to the silicone sleeve. The opening and closing mechanism is used to drive the flaps of the corresponding silicone sleeve to assemble or separate.

[0008] By adopting the above technical solution, when the charging gun is inserted or removed, the opening and closing mechanism drives the corresponding silicone sleeve flaps to separate, avoiding relative friction between the silicone sleeve and the movable charging gun terminal, thus ensuring smooth insertion and removal; after the charging gun is inserted, the opening and closing mechanism drives the flaps to combine to form a complete silicone sleeve, which tightly wraps the terminal to achieve protection; thereby avoiding relative friction between the silicone sleeve and the charging gun terminal, and extending the service life of the silicone sleeve.

[0009] Preferably, the opening and closing mechanism includes a mounting plate, a slider, a fixing plate, and a synchronous motion assembly. The mounting plate is mounted on a gun holder, and the mounting plate has sliding grooves that correspond one-to-one with the flaps. All the sliding grooves on the mounting plate are symmetrical with respect to the axis of the mounting plate. The slider slides in the sliding grooves, and the sliding direction of the slider is parallel to the radial direction of the mounting plate. The fixing plate is fixed to the slider, and the flaps are fixed to the side of the fixing plate facing the axis of the mounting plate. The synchronous motion assembly is used to drive all the sliders to move closer or further apart from each other.

[0010] By adopting the above technical solution, when the synchronous motion component drives the slider to move closer to the axis of the mounting plate along the sliding groove, the slider drives the flaps to gather together through the fixing plate, and finally combine into a complete silicone sleeve to wrap the terminal; when the slider moves away from the axis along the sliding groove, the flaps separate synchronously with the slider, so that the flaps move away from the terminal, leaving enough space for the plugging and unplugging of the charging gun terminal.

[0011] Preferably, the synchronous motion component includes a rotating disk and a round pin. The axis of the rotating disk coincides with that of the mounting disk, and the rotating disk is rotatably connected to the mounting disk. The rotating disk has arc-shaped grooves that correspond one-to-one with the sliders. All the arc-shaped grooves on the rotating disk are symmetrical with respect to the axis of the rotating disk. The arc-shaped grooves gradually approach the axis of the rotating disk in the circumferential direction. The round pin is movably disposed in the arc-shaped groove, and the arc-shaped groove abuts against the peripheral wall of the round pin. The round pin corresponds one-to-one with the slider and is fixedly connected. The gun holder is also provided with a rotating power component, which is used to drive the rotating disk to rotate.

[0012] By adopting the above technical solution, when the rotating power component drives the rotating disk to rotate in the forward direction around the axis, the inner wall of the arc groove gradually approaches the axis, and the arc groove generates a radial thrust on the round pin, which in turn drives the slider to gather, thereby driving the flap assembly; conversely, when the rotating disk rotates in the reverse direction, the arc groove pulls the round pin away from the axis, realizing the flap separation.

[0013] Preferably, the rotating power component includes a first motor, a drive gear, and a gear ring. The first motor is mounted on the gun holder, the drive gear is coaxially fixed with the drive shaft of the first motor, the gear ring is sleeved on the rotating disk and fixedly connected to the rotating disk, and the drive gear simultaneously meshes with the gear rings corresponding to the rotating disks in several opening and closing mechanisms.

[0014] By adopting the above technical solution, after the first motor starts, its drive shaft drives the active gear to rotate. The active gear drives multiple gear rings to rotate through meshing, and the gear rings eventually drive the rotating disk to rotate synchronously. In this way, the gear rings in multiple opening and closing mechanisms are driven to rotate through the same power source (i.e., the first motor).

[0015] Preferably, a mounting plate is slidably disposed on the gun holder, all the mounting discs are fixed on the mounting plate, the sliding direction of the mounting plate is parallel to the axial direction of the mounting disc, and a displacement mechanism for driving the mounting plate to slide is provided inside the gun holder.

[0016] By adopting the above technical solution, after the charging gun is inserted into the gun holder and the terminal has cooled down, the shifting mechanism drives the mounting plate to slide towards the terminal, so that the silicone sleeve is placed on the terminal. This avoids the silicone sleeve being outside the terminal during the heat dissipation process, which would make it difficult for the heat on the terminal to dissipate.

[0017] Preferably, the displacement mechanism includes a lead screw and a second motor. The second motor is fixedly connected to the gun holder, the lead screw is rotatably connected to the gun holder, the drive shaft of the second motor is coaxially fixed with the lead screw, and the lead screw is threadedly engaged with the mounting plate.

[0018] By adopting the above technical solution, the second motor drive shaft drives the lead screw to rotate synchronously. The lead screw engages with the mounting plate thread, and the mounting plate is limited by the gun holder and cannot rotate with the lead screw. The rotational motion of the lead screw is converted into the linear sliding of the mounting plate along the lead screw axis (i.e., the mounting plate axis), thereby driving the silicone sleeve to move closer to or away from the terminal.

[0019] Preferably, the gun holder is provided with an air nozzle facing the terminal, and the air nozzle is connected to a positive pressure source for supplying airflow to the air nozzle.

[0020] By adopting the above technical solution, before the silicone sleeve wraps the terminal, the positive pressure source sprays airflow onto the terminal surface through the air nozzle to blow away the dust attached to the terminal surface and accelerate the airflow speed on the terminal surface, thereby achieving a rapid cooling effect.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up silicone sleeves and flaps, the silicone sleeves directly wrap around the terminals to isolate them from air and moisture, reduce the risk of terminal oxidation, and lower the probability of poor contact. The flaps separate and combine under the drive of the opening and closing mechanism, which not only avoids friction between the silicone sleeves and terminals when the charging gun is plugged in and out, thus extending the service life, but also wraps around the terminals after the charging gun is inserted to achieve reliable protection. 2. By setting up a mounting plate, slider, fixing plate, sliding groove, rotating plate, round pin, arc groove, first motor, drive gear, gear ring, and mounting plate, the first motor drives the rotating plate in multiple opening and closing mechanisms to rotate through the meshing of the drive gear and gear ring. The rotation of the rotating plate drives all sliders to move along the sliding groove through the cooperation of the arc groove and the round pin, thereby realizing the gathering and separation of all the petals. 3. By setting up a mounting plate, a shifting mechanism, and a lead screw, the motor drives the lead screw to rotate, thereby driving the mounting plate to move the silicone sleeve along the axis of the mounting plate, so as to move the silicone sleeve closer to the terminal and further away. This makes it easier to move the silicone sleeve closer to the terminal after the terminal has cooled down, thus avoiding affecting the heat dissipation of the terminal. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the electric vehicle charging plug protection device provided in the embodiments of this application.

[0023] Figure 2 yes Figure 1 Enlarged view of section A.

[0024] Figure 3 This is a schematic diagram of the internal structure of the gun mount in an embodiment of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Gun holder; 11. Mounting plate; 12. Air nozzle; 2. Silicone sleeve; 21. Wrapper flap; 22. End piece; 3. Charging gun; 31. Terminal; 4. Opening and closing mechanism; 41. Mounting plate; 411. Sliding groove; 42. Slider; 43. Fixing piece; 44. Synchronous motion assembly; 441. Rotary disk; 4411. Arc groove; 442. Round pin; 5. Rotational power component; 51. First motor; 52. Drive gear; 53. Gear ring; 6. Shifting mechanism; 61. Lead screw; 62. Second motor; 63. Guide rod. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0027] This application discloses an electric vehicle charging plug protection device. (See also...) Figure 1 and Figure 2 It includes a gun holder 1 for inserting and fixing the charging gun 3. In this embodiment, the gun holder 1 is fixedly installed with a guide rod 63 in the cavity corresponding to the DC terminal 31 of the charging gun 3. When the charging gun 3 is inserted into the gun holder 1, the axis of the terminal 31 will be parallel to the length direction of the guide rod 63. A mounting plate 11 is slidably installed inside the gun holder 1; the guide rod 63 passes through the mounting plate 11 and slides with the mounting plate 11.

[0028] Reference Figure 1 and Figure 3The mounting plate 11 has several silicone sleeves 2 on the side facing the charging gun 3, and each silicone sleeve 2 corresponds to a DC terminal 31 on the charging gun 3. In this embodiment, the charging gun 3 has two DC terminals 31, so there are also two silicone sleeves 2. When the charging gun 3 is inserted into the gun holder 1, the silicone sleeve 2 will coincide with the axis of the DC terminal 31, and the silicone sleeve 2 can be fitted onto the corresponding terminal 31 and wrap around the terminal 31. Specifically, the silicone sleeve 2 is composed of several petals 21 evenly arranged in the circumferential direction. In this embodiment, the silicone sleeve 2 is composed of six symmetrical petals 21, and the petals 21 can be separated from each other. The mounting plate 11 inside the gun holder 1 is provided with an opening and closing mechanism 4 corresponding to each silicone sleeve 2. The opening and closing mechanism 4 is used to drive the petals 21 of the corresponding silicone sleeve 2 to combine or separate.

[0029] Reference Figure 1 and Figure 3 When the charging gun 3 is inserted or removed, the opening and closing mechanism 4 drives the corresponding silicone sleeve 21 to separate, preventing the silicone sleeve 2 from contacting the movable charging gun 3 terminal 31 and causing relative friction, ensuring smooth insertion and removal, and improving the service life of the sleeve 21. When the charging gun 3 is inserted, the opening and closing mechanism 4 drives the sleeve 21 to assemble into a complete silicone sleeve 2, tightly wrapping the terminal 31 to achieve isolation and protection.

[0030] To facilitate the assembly or separation of the flaps 21, refer to... Figure 2 and Figure 3 The opening and closing mechanism 4 includes a mounting plate 41, a slider 42, a fixing plate 43, and a synchronous motion assembly 44. The mounting plate 41 in both opening and closing mechanisms 4 is fixed to the mounting plate 11 in the charging gun holder 1. When the charging gun 3 is inserted, the mounting plate 41 coincides with the axis of the corresponding terminal 31. In this embodiment, the silicone sleeve 2 also includes an end piece 22, which is fixed to the middle of the mounting plate 41 on the side facing the terminal 31. The end piece 22 is used to abut against the end of the terminal 31. A sliding groove 411 corresponding to the flap 21 is formed through the mounting plate 41. All sliding grooves 411 on the mounting plate 41 are symmetrical with respect to the axis of the mounting plate 41. The slider 42 slides within the sliding groove 411, which has a track for linear sliding of the slider 42. The sliding direction of the slider 42 is parallel to the radial direction of the mounting plate 41. The fixing plate 43 is fixed to the side of the slider 42 facing the terminal 31, and the fixing plate 43 is arc-shaped. The flap 21 is fixed to the fixing plate 43 on the side facing the axis of the mounting plate 41, and the fixing plate 43 provides rigid support for the outer side of the flap 21.

[0031] Reference Figure 2 and Figure 3The synchronous motion component 44 is used to move all sliders 42 closer together or further apart. Specifically, the synchronous motion component 44 includes a rotating disk 441 and a round pin 442. The rotating disk 441 is located on the side of the mounting disk 41 opposite to the terminal 31. The axis of the rotating disk 441 coincides with that of the mounting disk 41, and the rotating disk 441 is rotatably connected to the mounting disk 41. The rotating disk 441 has arc-shaped grooves 4411 that correspond one-to-one with the sliders 42. All the arc-shaped grooves 4411 on the rotating disk 441 are symmetrical with respect to the axis of the rotating disk 441. The arc-shaped grooves 4411 gradually approach the axis of the rotating disk 441 in the circumferential direction. The round pin 442 is movably disposed in the arc-shaped groove 4411. The two side walls of the arc-shaped groove 4411 are in contact with and abut against the peripheral wall of the round pin 442. The round pin 442 corresponds one-to-one with the slider 42 and is fixedly connected.

[0032] Reference Figure 2 and Figure 3 The gun holder 1 is also equipped with a rotating power component 5, which drives the rotating disk 441 to rotate. Specifically, the rotating power component 5 includes a first motor 51, a drive gear 52, and a gear ring 53. The first motor 51 is mounted on the gun holder 1. In this embodiment, a fixing frame is fixedly mounted on the mounting plate 11 on the side opposite to the terminal 31, and the first motor 51 is fixed to the fixing frame by bolts. The drive gear 52 is coaxially fixed with the drive shaft of the first motor 51, and the drive gear 52 is parallel to the axis of the rotating disk 441. The gear ring 53 is sleeved on the rotating disk 441 and fixedly connected to the rotating disk 441. The drive gear 52 simultaneously meshes with the gear ring 53 corresponding to the rotating disk 441 in both opening and closing mechanisms 4.

[0033] Reference Figure 2 and Figure 3 When the charging gun 3 is inserted, the first motor 51 drives the drive gear 52 to rotate. The drive gear 52 meshes with and drives the two gear rings 53, which in turn drive the two rotating disks 441 to rotate. When the rotating disks 441 rotate, the sliding groove 411 constrains the sliding direction of the sliders 42. The inner wall of the arc groove 4411 exerts a force on the round pin 442 along the radial direction of the mounting disk 41, thereby driving all the sliders 42 to move synchronously towards the axis of the mounting disk 41 along the sliding groove 411, ultimately achieving the gathering and combination of the flaps 21 of the silicone sleeve 2.

[0034] To facilitate cooling and cleaning of terminal 31 before the silicone sleeve 2 is wrapped around terminal 31, refer to Figure 2 and Figure 3The inner walls on both sides of the gun holder 1 are fixedly equipped with brackets, and air nozzles 12 are fixed and inclined on the brackets. When the charging gun 3 is inserted, the air nozzles 12 face the terminal 31. The air nozzles 12 are connected to a positive pressure source for supplying airflow to the air nozzles 12, and the connection between the air nozzles 12 and the positive pressure source is controlled by a solenoid valve. The positive pressure source can be an air pump. The gun holder 1 is equipped with a shifting mechanism 6 for driving the mounting plate 11 to slide. The shifting mechanism 6 includes a lead screw 61 and a second motor 62. The second motor 62 is fixedly connected to the gun holder 1, and the lead screw 61 is rotatably connected to the gun holder 1. The drive shaft of the second motor 62 is coaxially fixed with the lead screw 61, and the lead screw 61 is threadedly engaged with the mounting plate 11.

[0035] Reference Figure 2 and Figure 3 When the charging gun 3 is inserted, the solenoid valve is activated, and the positive pressure source sprays airflow onto the surface of the terminal 31 through the air nozzle 12, blowing away the dust adhering to the surface of the terminal 31 and accelerating the airflow speed on the surface of the terminal 31, thereby achieving a rapid cooling effect. After the terminal 31 has cooled down, the second motor 62 drives the lead screw 61 to rotate, and the lead screw 61 engages with the mounting plate 11, thereby driving the silicone sleeve 2 to approach the terminal 31, preparing for the flap 21 to wrap around the terminal 31.

[0036] The implementation principle of the electric vehicle charging plug protection device in this embodiment is as follows: When the charging gun 3 is inserted into the gun holder 1, the positive pressure source first controls the air nozzle 12 to spray airflow onto the surface of the terminal 31 through the solenoid valve. The airflow blows away the dust attached to the surface of the terminal 31 and achieves rapid cooling of the terminal 31. After the temperature of the terminal 31 decreases, the second motor 62 drives the lead screw 61 to rotate in the forward direction, causing the mounting plate 11 to move along the guide rod 63 and approach the terminal 31 until the flap 21 surrounds the corresponding terminal 31, and at this time the end piece 22 abuts against the end of the terminal 31. Then the first motor 51 drives the drive gear 52 to rotate. The drive gear 52 meshes with the two gear rings 53, thereby driving the rotating disk 441 to rotate. The arc groove 4411 pushes the round pin 442 to make the slider 42 approach the axis of the mounting disk 41. The slider 42 drives the flap 21 to gather through the fixing piece 43, finally forming a complete silicone sleeve 2 that tightly wraps around the outside of the terminal 31, achieving isolation of the terminal 31 from air and moisture.

[0037] Before the charging gun 3 is pulled out, the first motor 51 will cause the rotating disk 441 to rotate in the opposite direction, and the flap 21 will separate synchronously with the slider 42. Then the charging gun 3 can be smoothly pulled out from the gun holder 1. Afterwards, the second motor 62 will cause the lead screw 61 to rotate in the opposite direction, driving the mounting plate 11 and the silicone sleeve 2 to slide away from the terminal 31, completing the reset.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A protective device for an electric vehicle charging plug, comprising a charging gun holder (1), characterized in that: The gun holder (1) is provided with a number of silicone sleeves (2), and the silicone sleeves (2) correspond one-to-one with the terminals (31) on the charging gun (3). The silicone sleeves (2) can be put on the terminals (31) and wrap the terminals (31).

2. The electric vehicle charging plug protection device according to claim 1, characterized in that: The silicone sleeve (2) is composed of several flaps (21) evenly arranged in the circumferential direction. The flaps (21) can be separated from each other. The gun holder (1) is provided with an opening and closing mechanism (4) corresponding to the silicone sleeve (2). The opening and closing mechanism (4) is used to drive the flaps (21) of the corresponding silicone sleeve (2) to combine or separate.

3. The electric vehicle charging plug protection device according to claim 2, characterized in that: The opening and closing mechanism (4) includes a mounting plate (41), a slider (42), a fixing plate (43), and a synchronous motion component (44). The mounting plate (41) is mounted on the gun holder (1). The mounting plate (41) has sliding grooves (411) that correspond one-to-one with the flaps (21). All the sliding grooves (411) on the mounting plate (41) are symmetrical with respect to the axis of the mounting plate (41). The slider (42) slides in the sliding groove (411). The sliding direction of the slider (42) is parallel to the radial direction of the mounting plate (41). The fixing plate (43) is fixed on the slider (42). The flaps (21) are fixed on the fixing plate (43) on the side facing the axis of the mounting plate (41). The synchronous motion component (44) is used to drive all the sliders (42) to move closer or further apart from each other.

4. The electric vehicle charging plug protection device according to claim 3, characterized in that: The synchronous motion assembly (44) includes a rotating disk (441) and a circular pin (442). The axis of the rotating disk (441) coincides with that of the mounting disk (41), and the rotating disk (441) is rotatably connected to the mounting disk (41). The rotating disk (441) has arc-shaped grooves (4411) that correspond one-to-one with the slider (42). All the arc-shaped grooves (4411) on the rotating disk (441) are symmetrical with respect to the axis of the rotating disk (441). The groove (4411) gradually approaches the axis of the rotating disk (441) in the circumferential direction. The round pin (442) is movably disposed in the arc groove (4411). The arc groove (4411) abuts against the peripheral wall of the round pin (442). The round pin (442) corresponds to and is fixedly connected to the slider (42). The gun holder (1) is also provided with a rotating power component (5). The rotating power component (5) is used to drive the rotating disk (441) to rotate.

5. The electric vehicle charging plug protection device according to claim 4, characterized in that: The rotating power component (5) includes a first motor (51), a drive gear (52), and a gear ring (53). The first motor (51) is mounted on the gun holder (1). The drive gear (52) is coaxially fixed with the drive shaft of the first motor (51). The gear ring (53) is sleeved on the rotating disk (441) and fixedly connected to the rotating disk (441). The drive gear (52) simultaneously meshes with the gear ring (53) corresponding to the rotating disk (441) in several opening and closing mechanisms (4).

6. The electric vehicle charging plug protection device according to claim 3, characterized in that: A mounting plate (11) is slidably disposed on the gun holder (1), and all the mounting discs (41) are fixed on the mounting plate (11). The sliding direction of the mounting plate (11) is parallel to the axial direction of the mounting discs (41). A displacement mechanism (6) for driving the mounting plate (11) to slide is provided inside the gun holder (1).

7. The electric vehicle charging plug protection device according to claim 6, characterized in that: The shifting mechanism (6) includes a lead screw (61) and a second motor (62). The second motor (62) is fixedly connected to the gun holder (1). The lead screw (61) is rotatably connected to the gun holder (1). The drive shaft of the second motor (62) is coaxially fixed with the lead screw (61). The lead screw (61) is threadedly engaged with the mounting plate (11).

8. The electric vehicle charging plug protection device according to claim 1, characterized in that: The gun holder (1) is provided with an air nozzle (12) facing the terminal (31), and the air nozzle (12) is connected to a positive pressure source for supplying airflow to the air nozzle (12).

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