Direct current charging gun

Abstract

The invention discloses a direct current charging gun which comprises a direct current charging interface, a shell, a swing rod, a motor, a pressing rod, a catch wheel, a first spring and a protection box, the direct current charging interface is installed on the shell, the swing rod is rotatably arranged on the shell, one end of the swing rod is provided with a hook block, the other end of the swing rod is provided with a pressing part, and the protection box is fixedly arranged on the shell. The pressing part is arranged on the protection box through a first spring, the pressing rod is arranged on the protection box in a linear moving mode and connected with the pressing part, the motor and the catch wheel are embedded in the protection box, the motor is connected with the catch wheel, the catch wheel is provided with a protruding block, the protruding block can stop the pressing rod from moving, and the motor drives the catch wheel to rotate. Therefore, the convex block does not stop the movement of the pressing rod any more. According to the invention, in a normal state, that is, when charging is not carried out, the convex block on the catch wheel can block the movement of the pressing rod, so that the swing rod cannot rotate, that is, the hook block cannot move, and the hook block can be effectively prevented from colliding with other external objects.

Description

Technical Field

[0001] This invention relates to the field of charging gun design, and in particular to a DC charging gun. Background Technology

[0002] Electric vehicles require charging, and the charging gun is a crucial component connecting the electric vehicle to the charging station; charging an electric vehicle is inseparable from its use. A DC charging gun is one type of charging gun that outputs direct current to directly charge the battery, offering advantages such as high power and fast charging speed.

[0003] To prevent the DC charging gun from detaching from the charging port of the electric vehicle during charging, most modern DC charging guns are equipped with a hook that engages with the charging port of the electric vehicle during charging, as well as a button for unlocking the latch.

[0004] However, in actual use, it was found that even when not being charged, the hook block is still prone to moving due to accidental button presses, causing it to collide with other objects and resulting in damage, thus affecting the reliability of the hook block. Summary of the Invention

[0005] The purpose of this invention is to provide a DC charging gun.

[0006] According to one aspect of the present invention, a DC charging gun is provided, comprising a DC charging interface, a housing, a rocker arm, a motor, a push rod, a stop wheel, a first spring, and a protective box. The DC charging interface is mounted on the housing, the swing arm is rotatably mounted on the housing, one end of the swing arm is provided with a hook, and the other end is provided with a pressing part, the protective box is fixedly mounted on the housing, and the pressing part is mounted on the protective box by a first spring. The actuating lever is linearly movable and mounted on the protective box. The actuating lever is connected to the pressing part. The motor and the stop wheel are both embedded within the protective box. The motor and the stop wheel are connected, and the stop wheel has a protrusion. The protrusion can block the movement of the push rod, and the motor drives the stop wheel to rotate so that the protrusion no longer blocks the movement of the push rod.

[0007] The beneficial effects of the present invention are as follows: In the present invention, under normal conditions, that is, when not being charged, the protrusion on the stop wheel can block the movement of the push rod, thereby preventing the swing arm from rotating, that is, preventing the hook from moving, which can effectively prevent the hook from colliding with other objects. When charging is required, the stop wheel can be driven to rotate by the motor, thereby causing the protrusion and the push rod to avoid each other. At this time, the swing arm becomes rotatable, and the user can drive the hook to move by pressing the pressing part.

[0008] In addition, placing the motor and other structures inside the protective box can provide a certain degree of protection and waterproofing, thereby reducing the impact of external factors on the operation of the motor and other structures.

[0009] In some embodiments, the housing includes a gun shell, a cover plate, a cable clamp, a buttstock retaining ring, a buttstock waterproof ring, and a buttstock protective sleeve. The cover plate is mounted on the gun shell, and the cover plate and gun shell enclose a receiving cavity. The cable clamp is connected to the gun shell. The buttstock retaining ring and the buttstock waterproof ring are respectively embedded in the gun shell, with the buttstock waterproof ring located between the cable clamp and the buttstock retaining ring. The buttstock protective sleeve is connected to the cable clamp. The receiving cavity can conceal and protect most of the protective box and the swing arm, improving their service life.

[0010] In some embodiments, the gun casing is provided with a drain hole that communicates with the receiving cavity. The drain hole facilitates the drainage of water that has entered the receiving cavity.

[0011] In some embodiments, the gun casing has multiple grooves, and the cover plate has multiple ribs, with each rib corresponding to one of the grooves. The grooves and ribs increase the contact area between the cover plate and the gun casing, thereby improving the reliability of their connection.

[0012] In some embodiments, the present invention further includes a first micro switch, which is embedded in a protective box. The protective box has a positioning groove, and the first micro switch has a positioning post embedded in the positioning groove. A waterproof adhesive strip is provided between the first micro switch and the protective box, and the lever can abut against the first micro switch. The first micro switch can be linked with a DC charging interface. Normally, when the first micro switch is pressed by the lever, the DC charging interface cannot perform charging. When the pressing part is pressed, the lever rotates and separates from the first micro switch, at which point the DC charging interface can perform charging. In addition, the positioning groove and positioning post limit the position of the first micro switch within the protective box to ensure the accuracy of the first micro switch's position setting, while the waterproof adhesive strip prevents external water from entering the protective box through the gap between the first micro switch and the protective box.

[0013] In some embodiments, the present invention further includes a second micro switch, which is embedded in a protective box. The second micro switch has a positioning hole, and the motor has a protrusion embedded in the positioning hole. The second micro switch can abut against the protrusion. The second micro switch can provide feedback on the position of the protrusion to ensure that the movement position of the protrusion driven by the motor meets the requirements. The protrusion and positioning hole ensure that the relative position of the second micro switch and the motor is accurately set.

[0014] In some embodiments, the protective box includes an upper box body, a lower box body, and a waterproof plug. The upper box body and the lower box body are connected, and the waterproof plug is embedded in the lower box body and connected to the housing. The waterproof plug facilitates the fixing of the protective box to the housing.

[0015] In some embodiments, the invention further includes a push rod, a stop plate, and a second spring. The push rod is linearly movably embedded in the protective box, the stop plate is installed inside the protective box, and the push rod has a protrusion. One side of the protrusion abuts against the stop plate, and the other side abuts against one end of the second spring. The other end of the second spring abuts against the protective box. The push rod can drive the stop wheel to rotate, so that the protrusion no longer obstructs the movement of the push rod. The push rod allows the user to manually move the protrusion in an emergency, thereby making the push rod movable.

[0016] In some embodiments, the present invention further includes a push rod waterproof ring, which is embedded in the protective box. The push rod waterproof ring has a boss that abuts against the push rod. The push rod waterproof ring prevents external water from entering the protective box through the gap between the push rod and the protective box.

[0017] In some embodiments, the invention further includes a waterproof cap, which is embedded in the protective box and fitted onto the push rod. The waterproof cap prevents external water from entering the housing through the gap between the push rod and the protective box. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a DC charging gun according to one embodiment of the present invention.

[0019] Figure 2 This is an exploded view of a DC charging gun according to one embodiment of the present invention.

[0020] Figure 3 This is a cross-sectional view of the structure of a DC charging gun at the push rod according to one embodiment of the present invention.

[0021] Figure 4 This is a cross-sectional view of the structure of a DC charging gun at the cable clamp block according to one embodiment of the present invention.

[0022] Figure 5 This is an exploded view of the protective box for a DC charging gun according to one embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the upper housing and the first micro switch according to one embodiment of the present invention.

[0024] Figure 7This is a schematic diagram of the structure of the motor and the second micro switch of a DC charging gun according to one embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the casing of a DC charging gun according to one embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of the cover plate of a DC charging gun according to one embodiment of the present invention.

[0027] In the diagram: 1. DC charging interface, 2. Housing, 3. Sway bar, 4. Motor, 5. Push rod, 6. Buffer wheel, 7. Protective box, 8. First spring, 9. Waterproof cap, 10. First micro switch, 20. Second micro switch, 30. Push rod, 40. Baffle plate, 50. Second spring, 60. Push rod waterproof ring, 21. Gun shell, 22. Cover plate, 23. Cable clamp, 24. Gun tail fixing ring, 25. Gun tail waterproof ring, 26. Gun tail protective sleeve, 211. Groove, 221. Rib, 212. Drain hole, 31. Hook, 32. Pressing part, 41. Protruding post, 61. Protrusion, 71. Upper box, 72. Lower box, 73. Waterproof plug, 701. Positioning groove, 101. Positioning post, 102. Waterproof rubber strip, 201. Positioning hole, 301. Protrusion, 601. Boss. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings.

[0029] refer to Figures 1-9 The present invention provides a DC charging gun, comprising a DC charging interface 1, a housing 2, a swing arm 3, a motor 4, a push rod 5, a stop wheel 6, a protective box 7, and a first spring 8.

[0030] The housing 2 includes a gun shell 21, a cover plate 22, a cable clamp 23, a gun tail fixing ring 24, a gun tail waterproof ring 25, and a gun tail protective sleeve 26.

[0031] The cover plate 22 is fixedly installed on the gun housing 21 by snap-fit. The gun housing 21 has multiple grooves 211, and the cover plate 22 has multiple ribs 221. When the cover plate 22 is installed on the gun housing 21, the multiple ribs 221 are respectively embedded in the multiple grooves 211. At the same time, the cover plate 22 and the gun housing 21 will form a receiving cavity.

[0032] The gun casing 21 is also provided with a drain hole 212 on the side. The drain hole 212 is connected to the accommodating cavity. When there is water in the accommodating cavity, the drain hole 212 can facilitate the drainage of the water in the accommodating cavity.

[0033] One end of the gun housing 21 has an opening, and the DC charging interface 1 is fixedly embedded in the opening, so that the DC charging interface 1 is fixedly installed on the housing 2. The other end of the gun housing 21 is engaged with the cable clamp 23. The DC charging interface 1 can be connected to a cable, and the cable can pass through the housing 2. The cable clamp 23 can be sleeved on the cable. The gun tail fixing ring 24 is also sleeved on the cable and fixedly embedded in the gun housing 21. The gun tail waterproof ring 24 is fixedly embedded in the gun housing 21 and is also sleeved on the cable. Moreover, the gun tail waterproof ring 24 is located between the cable clamp 23 and the gun tail fixing ring 24. The gun tail protective sleeve 26 is engaged with the cable clamp 23 and is also sleeved on the cable.

[0034] The swing arm 3 is rotatably mounted on the gun shell 21 of the housing 2 via a shaft, and most of the swing arm 3 is located inside the accommodating cavity. One end of the swing arm 3 is provided with a hook block 31, and the other end of the swing arm 3 is provided with a pressing part 32. The pressing part 32 protrudes from the cover plate 22, and the protective box 7 is provided with a spring seat. The first spring 8 is provided on the spring seat. At the same time, the pressing part 32 abuts against the first spring 8, that is, the pressing part 32 is provided on the protective box 7 through the first spring 8.

[0035] The protective box 7 includes an upper box body 71, a lower box body 72, and a waterproof plug 73. The upper box body 71 and the lower box body 72 are connected by screws, and the upper box body 71 is fixedly connected to the housing 2 by screws. One end of the waterproof plug 73 is fixedly embedded in the lower box body 72, and the other end of the waterproof plug 73 is fixedly embedded in the housing 2 to connect with the housing 2. In this way, the protective box 7 is fixedly mounted on the housing 2, and the protective box 7 is embedded in the receiving cavity, so that the protective box 7 is hidden and protected by the cover plate 22.

[0036] The push rod 5 is linearly movable on the protective box 7. Preferably, the DC charging gun also includes a waterproof cap 9, which is fixedly embedded in the protective box 7 and sleeved on the push rod 5. The push rod 5 can slide up and down relative to the waterproof cap 9, so that the push rod 5 can move up and down relative to the protective box 7.

[0037] The push rod 5 is located at the bottom of the pressing part 32 and is connected to the pressing part 32, so that the pressing part 32 and the push rod 5 can move together.

[0038] Both the motor 4 and the retaining wheel 6 are embedded in the protective box 7, and the output shaft of the motor 4 is connected to the retaining wheel 6, so that the motor 4 can drive the retaining wheel 6 to rotate. The retaining wheel 6 is provided with a protrusion 61. Under normal conditions, the protrusion 61 can block the downward movement of the pressing rod 5, but after the motor 4 drives the retaining wheel 6 to rotate, the protrusion 61 can no longer block the downward movement of the pressing rod 5.

[0039] This DC charging gun also includes a first micro switch 10, which is embedded in a protective box 7. The protective box 7 has multiple positioning slots 71, and the first micro switch 10 has multiple positioning posts 101, which are respectively embedded in the multiple positioning slots 71. The top of the main body and the switch part of the first micro switch 10 are exposed. A waterproof strip 102 is provided between the main body of the first micro switch 10 and the protective box 7. The swing arm 3 can normally abut against the first micro switch 10. The first micro switch 10 can be electrically connected to the DC charging interface 1. When the first micro switch 10 contacts the swing arm 3 and is triggered, the DC charging interface 1 cannot perform charging. Conversely, when the first micro switch 10 is separated from the swing arm 3 and is not triggered, the DC charging interface 1 can perform charging.

[0040] This DC charging gun also includes a second micro switch 20, which is fixedly embedded in the protective box 7. The second micro switch 20 has multiple positioning holes 201. The side of the motor 4 body has multiple protrusions 41, which are respectively embedded in the multiple positioning holes 201. The second micro switch 20 can abut against the protrusion 61 on the stop wheel 6. The second micro switch 20 can be electrically connected to the motor 4. The second micro switch 20 can provide feedback on the position of the protrusion 61. When the motor 4 rotates the stop wheel 6 so that the protrusion 61 moves to a position that can no longer block the movement of the push rod 5, the second micro switch 20 can send a signal to the motor 4 to stop the operation of the motor 4.

[0041] This DC charging gun also includes a push rod 30, a baffle 40, and a second spring 50. The protective box 7 has a side hole on its side. The push rod 30 is laterally and linearly movable and is fitted into the side hole of the protective box 7. The baffle 40 is fixedly installed on the side wall of the side hole of the protective box 7. A protrusion 301 is provided on the side of the push rod 30. One side of the protrusion 301 abuts against the baffle 40, and the other side of the protrusion 301 abuts against one end of the second spring 50. The second spring 50 is sleeved on the push rod 30, and the other end of the second spring 50 abuts against the housing 2. The push rod 30 can move laterally and linearly to push the stop wheel 6 to rotate, so that the protrusion 61 no longer obstructs the movement of the pressing rod 5.

[0042] This DC charging gun includes a push rod waterproof ring 60, which is fixedly embedded in the side wall of the side hole of the protective box 7. The push rod waterproof ring 60 has a boss 601, which abuts against the push rod 30. The boss 601 and the push rod 30 can slide relative to each other.

[0043] When the DC charging gun is not in use for charging, the protrusion 61 will block the movement of the push rod 5, so the pressing part 32 cannot be pressed, that is, the swing rod 3 cannot rotate and the swing rod 3 is in a fixed state. At this time, the first micro switch 10 is in contact with the swing rod 3, and the DC charging interface 1 cannot perform charging work.

[0044] When the DC charging gun needs to be used for charging, the motor 4 drives the guide wheel 6 to rotate, causing the protrusion 61 to move accordingly until the protrusion 61 reaches a position that does not obstruct the movement of the push rod 5. At this time, the second micro switch 20 can stop the motor 4 from continuing to work. At this time, the protrusion 61 no longer obstructs the movement of the push rod 5. The user can press the pressing part 32 to make the swing rod 3 rotate. The hook block 31 on the swing rod 3 can be raised to easily hook the charging interface on the electric vehicle. At the same time, the swing rod 3 can be separated from the first micro switch 10 due to its rotation, and the DC charging interface 1 can be charged.

[0045] Additionally, when a user needs to urgently unlock the protrusion 61, they can press the push rod 30 to make the push rod 30 move laterally in a straight line to push the stop wheel 6 to rotate, so that the protrusion 61 no longer blocks the movement of the push rod 5, and the user can effectively press the pressing part 32 to charge the device.

[0046] This DC charging gun is also equipped with a protective box 7, a drainage hole 212, a waterproof strip 102, a waterproof plug 73, and other structures to minimize contact between external water and the motor 4 or the retaining wheel 6, thereby effectively ensuring the working reliability of the motor 4 or the retaining wheel 6.

[0047] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A DC charging gun, characterized in that, Includes a DC charging interface, housing, rocker arm, motor, push rod, stop wheel, first spring, and protective box. The DC charging interface is mounted on the housing, the swing arm is rotatably mounted on the housing, one end of the swing arm is provided with a hook, and the other end is provided with a pressing part, the protective box is fixedly mounted on the housing, and the pressing part is mounted on the protective box by a first spring. The actuating lever is linearly movable and mounted on the protective box. The actuating lever is connected to the pressing part. The motor and the stop wheel are both embedded within the protective box. The motor and the stop wheel are connected, and the stop wheel has a protrusion. The protrusion can block the movement of the push rod, and the motor drives the stop wheel to rotate so that the protrusion no longer blocks the movement of the push rod.

2. A DC charging gun according to claim 1, characterized in that, The housing includes a gun shell, a cover plate, a cable clamp, a butt retaining ring, a butt waterproof ring, and a butt protective sleeve. The cover plate is installed on the gun shell, and the cover plate and the gun shell form an accommodating cavity. The cable clamp is connected to the gun shell. The butt retaining ring and the butt waterproof ring are respectively embedded in the gun shell. The butt waterproof ring is located between the cable clamp and the butt retaining ring. The butt protective sleeve is connected to the cable clamp.

3. A DC charging gun according to claim 2, characterized in that, The gun casing is provided with a drainage hole, which is connected to the receiving cavity.

4. A DC charging gun according to claim 2, characterized in that, The gun casing has multiple grooves, and the cover plate has multiple ribs, with each of the ribs corresponding to and embedded in one of the multiple grooves.

5. A DC charging gun according to claim 1, characterized in that, It includes a first micro switch, which is embedded in a protective box. The protective box has a positioning groove, and the first micro switch has a positioning post. The positioning post is embedded in the positioning groove. A waterproof adhesive strip is provided between the first micro switch and the protective box. The swing rod can abut against the first micro switch.

6. A DC charging gun according to claim 1, characterized in that, It includes a second micro switch, which is embedded in the protective box and has a positioning hole. The motor has a protrusion, which is embedded in the positioning hole, and the second micro switch can abut against the protrusion.

7. A DC charging gun according to claim 1, characterized in that, The protective box includes an upper box body, a lower box body, and a waterproof plug. The upper box body and the lower box body are connected. The waterproof plug is embedded in the lower box body and connected to the shell.

8. A DC charging gun according to claim 1, characterized in that, The device includes a push rod, a stop plate, and a second spring. The push rod is linearly movable and embedded in the protective box. The stop plate is installed inside the protective box. The push rod has a protrusion; one side of the protrusion abuts against the stop plate, and the other side abuts against one end of the second spring. The other end of the second spring abuts against the protective box. The push rod can drive the stop wheel to rotate so that the protrusion no longer obstructs the movement of the push rod.

9. A DC charging gun according to claim 8, characterized in that, It includes a push rod waterproof ring, which is embedded in the protective box. The push rod waterproof ring has a boss that abuts against the push rod.

10. A DC charging gun according to claim 1, characterized in that, It includes a waterproof cap, which is embedded in the protective box and fitted onto the push rod.

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