Charging gun

Abstract

The utility model discloses a charging gun, which comprises a gun shell, a plug assembly inserted into the front end of an accommodating cavity of the gun shell, and a lock catch assembly arranged between the plug assembly and the inner wall of the gun shell, the lock catch assembly comprises a lock rod rotationally connected to the plug assembly, a button clamped at the rear end of the lock rod and an elastic piece installed between the lock rod and the plug assembly, the front end of the lock rod is provided with a lock hook extending out of the containing cavity, and at least part of the button extends out of the containing cavity. The elastic piece is configured to provide driving force away from the plug assembly for the rear end of the lock rod. According to the charging gun, the lock rod and the button are two independent parts, when the charging gun is assembled, the lock rod, the elastic piece and the plug assembly are assembled together and directly inserted into the gun shell, then the button is installed on the lock rod, the assembling process is very simple and convenient, and the assembling efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the field of charging technology, and specifically relates to a charging gun. Background Technology

[0002] New energy vehicles are attracting more and more consumers due to their advantages such as being green and environmentally friendly, energy-saving and quiet, and not subject to traffic restrictions. New energy vehicles are charged via charging stations, which are equipped with charging guns at their output ends for connecting to the car.

[0003] Current charging guns generally consist of a gun housing and a plug assembly and a locking assembly mounted on the housing. The locking assembly engages with the new energy vehicle to prevent the charging gun from being accidentally pulled out during charging. Currently, the locking assembly includes a one-piece molded locking rod and a button. For ease of pressing, the button needs to protrude radially from the gun housing. However, since the locking assembly is usually installed into the gun housing axially along with the plug assembly, the relatively protruding button makes assembly of the locking assembly and plug assembly difficult and cumbersome.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to provide a charging gun that solves the problem of the cumbersome assembly process of existing charging guns.

[0006] To achieve the above objectives, a specific embodiment of the present invention provides a charging gun, including a gun shell, a plug assembly inserted into the front end of a receiving cavity of the gun shell, and a locking assembly installed between the plug assembly and the inner wall of the gun shell. The locking assembly includes a locking rod rotatably connected to the plug assembly, a button locked at the rear end of the locking rod, and an elastic member installed between the locking rod and the plug assembly. The front end of the locking rod is provided with a locking hook extending out of the receiving cavity, the button extends at least partially outside the receiving cavity, and the elastic member is configured to provide a driving force to the rear end of the locking rod away from the plug assembly.

[0007] In one or more embodiments of this utility model, the locking assembly further includes a limiting member disposed between the front end of the locking rod and the plug assembly, the extending direction of the limiting member being parallel to the rotation axis of the locking rod.

[0008] In one or more embodiments of this utility model, a receiving groove is recessed on the side of the front end of the locking rod near the limiting member, and when the button is not pressed, the limiting member is at least partially received in the receiving groove.

[0009] In one or more embodiments of this utility model, one of the locking rod and the button is provided with a buckle, and the other is provided with a slot that engages with the buckle.

[0010] In one or more embodiments of this utility model, one of the locking lever and the button is provided with a slot, and the other is provided with a pin inserted into the slot.

[0011] In one or more embodiments of this utility model, the plug assembly is fixed to the gun housing by a plurality of bolts, the extension directions of the plurality of bolts being parallel to a first direction, which is parallel to the extension direction of the terminals of the plug assembly.

[0012] In one or more embodiments of the present invention, the plug assembly includes a first mounting hole extending through it in a first direction. The first mounting hole includes a first hole segment located at the front end of the plug assembly and a second hole segment located at the rear end of the plug assembly. The diameter of the first hole segment is larger than the diameter of the second hole segment. The bolt includes a first bolt. The head of the first bolt is accommodated in the first hole segment and its axial length is smaller than the axial length of the first hole segment. The shank of the first bolt extends through the second hole segment and is threaded to the gun housing.

[0013] In one or more embodiments of the present invention, the plug assembly includes a plug body and a connecting piece that protrudes radially from the plug body. The connecting piece includes a second mounting hole that extends through it in a first direction. The bolt includes a second bolt, the shank of which extends through the second mounting hole and is threaded onto the gun housing.

[0014] In one or more embodiments of this utility model, the accommodating cavity is provided with a plurality of connecting parts corresponding to a plurality of bolts, and the plurality of bolts and the plurality of connecting parts cooperate to fix the relative position of the plug assembly and the gun shell.

[0015] In one or more embodiments of this utility model, the charging gun further includes a micro switch installed between the plug assembly and the front end of the locking rod and cooperating with the front end of the locking rod. The distance S1 between the front end face of the micro switch and the front end face of the gun shell is between 3.79mm and 4.59mm.

[0016] In one or more embodiments of the present invention, the plug assembly includes a plug body and a terminal pressure plate installed at the rear end of the plug body, and a stop rib is provided in the accommodating cavity, and the rear end of the terminal pressure plate abuts against the stop rib.

[0017] In one or more embodiments of this utility model, the maximum length S2 of the gun casing in the first direction is between 145mm and 165mm.

[0018] In one or more embodiments of this utility model, the maximum length S3 of the gun casing in the second direction is between 48.8 mm and 52.8 mm.

[0019] In one or more embodiments of this utility model, the maximum length S4 of the gun casing in the third direction is between 57.5 mm and 63.5 mm.

[0020] In one or more embodiments of this utility model, the distance S5 between the front end face of the button and the front end face of the gun shell is between 26.8mm and 32.8mm.

[0021] Compared with the prior art, the locking rod and button of this utility model are set as two independent parts. When assembling the charging gun, the locking rod, elastic element and plug assembly are assembled together and directly inserted into the gun shell. Then the button is installed on the locking rod. The assembly process is very simple and the assembly efficiency is high. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional structural view of the charging gun in one embodiment of the present invention;

[0024] Figure 2 This is an exploded view of the charging gun in one embodiment of the present invention;

[0025] Figure 3 This is a cross-sectional structural diagram of the plug assembly and the locking assembly in one embodiment of the present invention;

[0026] Figure 4 This is an exploded view of the locking assembly in one embodiment of the present invention;

[0027] Figure 5 This is an exploded structural diagram of the gun casing and plug assembly in one embodiment of the present invention;

[0028] Figure 6 This is a cross-sectional view of the charging gun in one embodiment of the present invention;

[0029] Figure 7 This is a front view of the shell in one embodiment of the present invention.

[0030] Key reference numerals in the attached drawings: 1. Gun casing; 11. Receiving cavity; 12. Connecting part; 13. Stop rib; 14. Through hole; 2. Plug assembly; 21. Plug body; 211. First mounting hole; 2111. First hole segment; 2112. Second hole segment; 22. Terminal pressure plate; 23. Connecting piece; 231. Second mounting hole; 3. Locking assembly; 31. Locking rod; 311. Locking hook; 312. Receiving groove; 313. Snap-fit; 314. Slot; 32. Button; 321. Snap-fit; 322. Pin; 33. Elastic element; 34. Limiting element; 35. Rotating shaft; 4. Micro switch; 5. Cable; 6. Bolt; 61. First bolt; 62. Second bolt. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0032] In the description of this utility model, it should be understood that the terms "front end", "rear end", "head", "tail", "top wall", "bottom wall", "top", "bottom", "above", "below", "radial", "circumferential", "axial", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Secondly, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In addition, in the description of this utility model, the term "front end" refers to the end of the charging gun that is closer to the new energy vehicle when it is inserted into the new energy vehicle, and the term "rear end" refers to the end of the charging gun that is farther away from the new energy vehicle when it is inserted into the new energy vehicle. The term "first direction" is substantially parallel to the extension direction of the terminals of the plug assembly, and can be found in the following reference. Figure 6The X-axis direction in the diagram. The term "second direction" is essentially parallel to the arrangement direction of the L1, PE, and N terminals of the plug assembly; see reference for details. Figure 7 The Y-axis direction in the diagram. The term "third direction" is basically perpendicular to the first and second directions; see reference for details. Figure 7 The Z-axis direction in the equation.

[0035] In one embodiment, reference is made to Figures 1 to 7 As shown, this utility model provides a charging gun, which includes a gun shell 1, a plug assembly 2, a locking assembly 3, a micro switch 4, and a cable 5.

[0036] Specifically, the gun housing 1 has a receiving cavity 11 inside, the plug assembly 2 is inserted into the front end of the receiving cavity 11, the cable 5 is inserted into the rear end of the receiving cavity 11 and electrically connected to the plug assembly 2, the locking assembly 3 is installed between the plug assembly 2 and the inner wall of the gun housing 1, and the micro switch 4 is located in the receiving cavity 11 and installed between the plug assembly 2 and the locking assembly 3. The locking assembly 3 is used to engage with the locking structure at the new energy vehicle socket during charging to prevent the charging gun from falling out of the socket, and is also used to contact the micro switch 4 to control the on and off of the micro switch 4.

[0037] Reference Figure 3 and Figure 4 As shown, the locking assembly 3 includes a locking rod 31, a button 32, and an elastic element 33. The locking rod 31 is rotatably connected to the plug assembly 2. The front end of the locking rod 31 is provided with a locking hook 311 that extends out of the receiving cavity 11. The button 32 is engaged at the rear end of the locking rod 31 and extends at least partially outside the receiving cavity 11. The elastic element 33 is installed between the locking rod 31 and the plug assembly 2. The elastic element 33 is configured to provide a driving force to the rear end of the locking rod 31 away from the plug assembly 2.

[0038] In practical applications, the operator can press button 32 to drive the locking lever 31 to rotate, causing the locking hook 311 at the front end of the locking lever 31 to rotate away from the plug assembly 2, and the rear end of the locking lever 31 to rotate towards the plug assembly 2. At this time, the locking hook 311 can be inserted into the locking structure (e.g., slot 321) of the new energy vehicle. When the operator releases button 32, the elastic element 33 can drive the locking lever 31 and button 32 to reset.

[0039] Furthermore, by setting the locking lever 31 and the button 32 as two independent parts, assembly becomes easier. During assembly, the gun housing 1 has a pre-drilled through hole 14 that mates with the button 32. The operator first assembles the locking lever 31, the elastic element 33, and the plug assembly 2 together, inserts the entire assembly into the receiving cavity 11, and then installs the button 32 onto the locking lever 31 through the through hole 14 on the gun housing 1. The assembly process is very simple.

[0040] In one embodiment, reference is made to Figure 4As shown, the locking assembly 3 also includes a limiting member 34 disposed between the front end of the locking rod 31 and the plug assembly 2. Specifically, the limiting member 34 is located between the front end of the locking rod 31 and the micro switch 4, and its extension direction is parallel to the rotation axis of the locking rod 31. After the gun housing 1 loses its limiting effect on the locking rod 31, the limiting member 34 can limit the front end of the locking rod 31, protecting the micro switch 4 and its surrounding components, and preventing the locking rod 31 from damaging the micro switch 4 and its surrounding components.

[0041] Furthermore, a receiving groove 312 is recessed on the front end of the locking lever 31 near the limiting member 34, forming a space within the receiving groove 312 to avoid the limiting member 34. When the button 32 is not pressed, the limiting member 34 is at least partially received within the receiving groove 312. When the button 32 is pressed, the front end of the locking lever 31 rotates in the opposite direction away from the limiting member 34, and the limiting member 34 moves out of the receiving groove 312.

[0042] In one embodiment, reference is made to Figure 4 As shown, a buckle 313 is provided on the locking rod 31, and a slot 321 is provided on the button 32 to engage with the buckle 313. After the buckle 313 is engaged with the slot 321, the button 32 can be stably connected to the locking rod 31.

[0043] In another embodiment, the positions of the buckle 313 and the slot 321 can be interchanged, with the buckle 313 set on the button 32 and the slot 321 set on the locking rod 31.

[0044] In one embodiment, reference is made to Figure 4 As shown, the locking lever 31 has a recessed slot 314 on the side near the button 32, and the button 32 has a pin 322 inserted into the slot 314 on the side near the locking lever 31. The slot 314 and the pin 322 can play an auxiliary positioning role when installing the button 32.

[0045] Furthermore, when the slot 314 and the pin 322 are connected by an interference fit, the connection strength between the locking lever 31 and the button 32 can be enhanced.

[0046] In another embodiment, the positions of the slot 314 and the pin 322 are interchangeable, with the slot 314 disposed on the button 32 and the pin 322 disposed on the locking lever 31.

[0047] In one embodiment, reference is made to Figure 4 As shown, the elastic element 33 is a torsion spring. The torsion spring is sleeved on the rotating shaft 35 connected to the locking rod 31. One torsion arm of the torsion spring contacts the plug assembly 2, and the other torsion arm contacts the locking rod 31.

[0048] In one embodiment, reference is made to Figure 5As shown, the plug assembly 2 includes a plug body 21 and a terminal pressure plate 22 installed at the rear end of the plug body 21. A stop rib 13 is provided in the accommodating cavity 11. The rear end of the terminal pressure plate 22 abuts against the stop rib 13. The stop rib 13 can fix the installation position of the plug assembly 2 and provide auxiliary positioning when installing the plug assembly 2.

[0049] Furthermore, multiple stop ribs 13 are provided, and different parts of the terminal pressure plate 22 abut against different stop ribs 13.

[0050] In one embodiment, reference is made to Figure 6 As shown, the position of the micro switch 4 is relatively forward, that is, the front end face of the micro switch 4 is relatively closer to the front end face of the gun housing 1, and the distance S1 between the front end face of the micro switch 4 and the front end face of the gun housing 1 is between 3.79mm and 4.59mm.

[0051] Preferably, S1 can be set to approximately 3.8mm, 3.9mm, 4mm, 4.1mm, 4.2mm, 4.3mm, 4.4mm or 4.5mm.

[0052] After the position of the micro switch 4 is moved forward, the space required for the receiving cavity 11 is reduced, thereby reducing the size of the gun shell 1.

[0053] Reference Figure 7 As shown, the maximum length S2 of the gun case 1 in the first direction is between 145mm and 165mm, the maximum length S3 of the gun case 1 in the second direction is between 48.8mm and 52.8mm, and the maximum length S4 of the gun case 1 in the third direction is between 57.5mm and 63.5mm.

[0054] Preferably, S2 can be set to approximately 145mm, 147mm, 150mm, 152mm, 154mm, 155mm, 157mm, 160mm, 162mm or 165mm.

[0055] Preferably, S3 can be set to approximately 48.8mm, 50mm, 50.7mm, 51mm, 51.5mm, 52mm or 52.8mm.

[0056] Preferably, S4 can be set to approximately 57.5mm, 58mm, 58.5mm, 59mm, 59.5mm, 60mm, 60.4mm, 60.5mm, 61mm, 62mm, 63mm or 63.5mm.

[0057] Reference Figure 7 As shown, the distance S5 between the front end face of button 32 and the front end face of gun shell 1 is between 26.8mm and 32.8mm.

[0058] Preferably, S5 can be set to approximately 26.8mm, 27.5mm, 28mm, 29.8mm, 30mm, 31mm or 32mm.

[0059] Additionally, it should be noted that in actual applications, the front end face of the gun casing 1 may have some protruding or recessed structures. These protruding or recessed structures do not represent the front end face of the gun casing 1 in the above embodiment. The front end face of the gun casing 1 refers to the end face of the front end of the main body of the gun casing 1.

[0060] In one embodiment, reference is made to Figure 2 As shown, the plug assembly 2 is fixed to the gun housing 1 by bolts 6. The extension direction of the bolts 6 is parallel to the first direction, which is parallel to the extension direction of the terminals of the plug assembly 2.

[0061] Furthermore, multiple bolts 6 are provided, and the extension direction of all bolts 6 is parallel to the first direction. The accommodating cavity 11 is provided with multiple connecting parts 12 corresponding to the multiple bolts 6. The multiple bolts 6 cooperate with the multiple connecting parts 12 to realize the fixed connection between the plug assembly 2 and the gun shell 1.

[0062] In one embodiment, reference is made to Figure 2 and Figure 3 As shown, the plug body 21 of the plug assembly 2 includes a first mounting hole 211 extending through it in a first direction. The first mounting hole 211 includes a first hole segment 2111 located at the front end of the plug assembly 2 and a second hole segment 2112 located at the rear end of the plug assembly 2. The diameter of the first hole segment 2111 is larger than the diameter of the second hole segment 2112.

[0063] Bolt 6 includes a first bolt 61, the head of which is housed in a first hole 2111, and the axial length of the head of the first bolt 61 is less than the axial length of the first hole 2111 to hide the head of the first bolt 61. The shank of the first bolt 61 passes through a second hole 2112 and is threaded onto the gun housing 1.

[0064] Furthermore, the plug assembly 2 includes a plug body 21 and a connecting piece 23 that protrudes radially from the plug body 21. The connecting piece 23 includes a second mounting hole 231 that extends through it in a first direction. The bolt 6 includes a second bolt 62. The shank of the second bolt 62 extends through the second mounting hole 231 and is threaded onto the gun housing 1. The head of the second bolt 62 can be exposed outside the plug assembly 2.

[0065] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0066] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A charging gun, characterized in that, The charging gun includes a gun shell (1), a plug assembly (2) inserted into the front end of the receiving cavity (11) of the gun shell (1), and a locking assembly (3) installed between the plug assembly (2) and the inner wall of the gun shell (1). The locking assembly (3) includes a locking rod (31) rotatably connected to the plug assembly (2), a button (32) locked at the rear end of the locking rod (31), and an elastic member (33) installed between the locking rod (31) and the plug assembly (2). The front end of the locking rod (31) is provided with a locking hook (311) extending out of the receiving cavity (11). The button (32) extends at least partially outside the receiving cavity (11). The elastic member (33) is configured to provide a driving force to the rear end of the locking rod (31) away from the plug assembly (2).

2. The charging gun according to claim 1, characterized in that, The locking assembly (3) further includes a limiting member (34) disposed between the front end of the locking rod (31) and the plug assembly (2), wherein the extending direction of the limiting member (34) is parallel to the rotation axis of the locking rod (31).

3. The charging gun according to claim 2, characterized in that, The locking rod (31) has a recessed receiving groove (312) on the side near the limiting member (34) at the front end. When the button (32) is not pressed, the limiting member (34) is at least partially received in the receiving groove (312).

4. The charging gun according to claim 1, characterized in that, One of the locking rod (31) and the button (32) is provided with a buckle (313), and the other is provided with a slot (321) that engages with the buckle (313).

5. The charging gun according to claim 1, characterized in that, One of the locking bar (31) and the button (32) is provided with a slot (314), and the other is provided with a pin (322) inserted into the slot (314).

6. The charging gun according to claim 1, characterized in that, The plug assembly (2) is fixed to the gun housing (1) by a plurality of bolts (6), the extension directions of the plurality of bolts (6) are all parallel to a first direction, which is parallel to the extension direction of the terminals of the plug assembly (2).

7. The charging gun according to claim 6, characterized in that, The plug assembly (2) includes a first mounting hole (211) extending therethrough in a first direction. The first mounting hole (211) includes a first hole segment (2111) located at the front end of the plug assembly (2) and a second hole segment (2112) located at the rear end of the plug assembly (2). The diameter of the first hole segment (2111) is larger than the diameter of the second hole segment (2112). The bolt (6) includes a first bolt (61). The head of the first bolt (61) is received within the first hole segment (2111) and its axial length is smaller than the axial length of the first hole segment (2111). The shank of the first bolt (61) extends through the second hole segment (2112) and is threaded onto the gun housing (1). And / or, The plug assembly (2) includes a plug body (21) and a connecting piece (23) radially protruding from the plug body (21). The connecting piece (23) includes a second mounting hole (231) extending therethrough in a first direction. The bolt (6) includes a second bolt (62), the shank of which extends through the second mounting hole (231) and is threaded onto the gun housing (1); and / or, The accommodating cavity (11) is provided with a plurality of connecting parts (12) corresponding to a plurality of bolts (6). The plurality of bolts (6) and the plurality of connecting parts (12) cooperate to fix the relative position of the plug assembly (2) and the gun shell (1).

8. The charging gun according to claim 1, characterized in that, The charging gun also includes a micro switch (4) installed between the plug assembly (2) and the front end of the locking rod (31) and cooperating with the front end of the locking rod (31). The distance S1 between the front end face of the micro switch (4) and the front end face of the gun shell (1) is between 3.79mm and 4.59mm.

9. The charging gun according to claim 1, characterized in that, The plug assembly (2) includes a plug body (21) and a terminal pressure plate (22) installed at the rear end of the plug body (21). The receiving cavity (11) is provided with a stop rib (13), and the rear end of the terminal pressure plate (22) abuts against the stop rib (13).

10. The charging gun according to claim 1, characterized in that, The maximum length S2 of the gun casing (1) in the first direction is between 145 mm and 165 mm; and / or, The maximum length S3 of the gun casing (1) in the second direction is between 48.8 mm and 52.8 mm; and / or, The maximum length S4 of the gun casing (1) in the third direction is between 57.5 mm and 63.5 mm; and / or, The distance S5 between the front end face of the button (32) and the front end face of the gun shell (1) is between 26.8mm and 32.8mm.

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