Charging terminal and charging gun

Abstract

The utility model provides a charging terminal and a charging gun, which are applied to the field of direct current charging, and the main points of the technical scheme are that the charging terminal comprises a fixed piece, a plug-in piece and a central column, the central column comprises a connecting part which is integrally formed with the fixed piece; the part, not making contact with the human body, of the center rod is replaced with the connecting part, the connecting strength of the connecting part and the fixing piece is large, the connecting part and the fixing piece are made of the same material, and compared with insulating plastic, the connecting part is higher in strength and not prone to breakage, and the connecting part is not prone to breakage. Under the condition that the original function of the insulating part is maintained, compared with the prior art, the length of the center rod is reduced, the risk of breakage is reduced accordingly, and therefore the overall strength of the center rod is improved; the terminal has the technical effects that the strength of the center rod is enhanced, and the service life of the terminal is prevented from being influenced by breakage.

Description

Technical Field

[0001] The utility model relates to the field of direct current charging, in particular to a charging terminal and a charging gun. Background Art

[0002] New energy vehicles have achieved rapid development in recent years. New energy vehicles use energy storage batteries in the car to power the car, and the battery needs to be charged after the energy is depleted.

[0003] The charging gun is a charging device for the energy storage battery of new energy vehicles. A charging terminal is set at the muzzle of the charging gun (please refer to Figure 1 ), the charging terminal usually includes a fixing part 1 embedded in the charging gun body, a plug-in plug 2 assembled with the receiving terminal installed on the vehicle body, and a central rod for preventing electric shock. The fixing part 1 is fixedly connected with the plug-in plug 2, the plug-in plug 2 is tubular, the fixing part 1 and the plug-in plug 2 are made of conductive metal, and play the role of power conduction. The central rod is fixed to the fixing part 1 and is located in a cylindrical cavity in the middle of the plug-in plug 2.

[0004] The center rod of an existing charging terminal is usually made of insulating plastic injection molding, and the top of the center rod usually protrudes from the plug-in connector 2 to prevent the human body from directly contacting the plug-in connector 2 to ensure safety. In order for the center rod to occupy as little space as possible, the center rod is generally designed to be relatively slender, and the strength of the insulating plastic is generally lower than the metal strength used for the fixing part 1 and the plug-in connector 2. It is easy to break when plugging and unplugging, affecting the service life of the terminal and the charging gun. Utility Model Content

[0005] The first aspect of the utility model provides a charging terminal, which has the advantages of enhancing the strength of the center rod and preventing breakage that affects the service life of the terminal.

[0006] A second aspect of the utility model provides a charging gun.

[0007] The first aspect of the utility model provides the following technical solution: a charging terminal, comprising a fixing member, a plug-in unit and a center column; the center column comprises: a connecting portion integrally formed with the fixing member; and an insulating portion fixed to an end of the connecting portion away from the fixing member, the insulating portion protruding from the plug-in unit.

[0008] Through the above technical solution, the part of the center column that does not contact the human body is replaced by a connecting part. The connection strength between the connecting part and the fixing part is high, and the connecting part and the fixing part are made of the same material, which is stronger than insulating plastic and not easy to break. While maintaining its original function, the insulating part is shorter than the center rod of the prior art, and the risk of breakage is also reduced, thereby improving the overall strength of the center rod and making it less likely to break, thereby ensuring the service life of the charging terminal and the charging gun.

[0009] In an embodiment of the present invention, the insulating portion is configured to be tubular, sleeved on the connecting portion and has a closed end.

[0010] Through the above technical solution, the connecting part supports the insulating part from the inside, further improving the strength of the insulating part, thereby further reducing the risk of breakage of the insulating part.

[0011] In an embodiment of the present invention, the connecting portion and the insulating portion are threadedly fixed.

[0012] The above technical solution makes it easy to disassemble and assemble the insulation part, and to inspect and replace the insulation part.

[0013] In one embodiment of the present invention, a plurality of partition grooves are formed in a circumferential direction of the plug-in extraction ring to separate the plug-in extraction ring into multiple petals.

[0014] Through the above technical solution, when the plug-in is inserted into the receiving terminal set on the vehicle body, the multi-petal plug-in embraces the receiving terminal, so that the multi-petal plug-in can fully contact the receiving terminal, effectively increasing the contact area and reducing the resistance.

[0015] In an embodiment of the present invention, the fixing member and the plug-in member are eccentrically disposed.

[0016] Through the above technical solution, when arranging the positive and negative terminals, the distance between the two plug-ins can be adjusted when the distance between the two plug-ins is fixed, so that the distance is greater than the creepage distance of the two fixings to ensure safety.

[0017] The second aspect of the present invention provides the following solution: a charging gun, comprising the above-mentioned charging terminal, wherein the fixing parts of the positive and negative charging terminals are far away from each other.

[0018] Through the above technical solution, the distance between the two plug-ins is fixed so that the distance between the two fixing parts is maximized, thereby avoiding mutual interference between the positive and negative charging terminals and ensuring safety.

[0019] As described above, the charging terminal and charging gun of the utility model have the following beneficial effects:

[0020] The part of the center column that does not contact the human body is replaced with a connecting part. The connection strength between the connecting part and the fixing part is high, and the connecting part and the fixing part are made of the same material, which is stronger than insulating plastic and not prone to breakage. While maintaining its original function, the insulating part is shorter than the center rod in the prior art, and the risk of breakage is also reduced. The overall strength of the center rod is improved, which is not prone to breakage, thereby ensuring the service life of the charging terminal and the charging gun. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of a charging terminal disclosed in the prior art.

[0022] Figure 2 Shown is a schematic diagram of the charging terminal of the charging gun disclosed in Example 1 of the present utility model.

[0023] Figure 3 Shown is a cross-sectional view of the charging terminal of the charging gun disclosed in Embodiment 1 of the present invention.

[0024] Figure 4 Shown is a cross-sectional view of a charging terminal of a charging gun disclosed in Embodiment 2 of the present invention.

[0025] Description of technical feature numbers in the accompanying drawings:

[0026] 1. Fixing parts; 2. Plug-in connector; 3. Center column; 4. Connecting part; 5. Insulating part; 6. Partition groove. DETAILED DESCRIPTION

[0027] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0028] Example 1

[0029] See also Figure 2 The utility model provides a charging gun, comprising: a gun body, a positive and negative charging terminal is arranged at the muzzle of the gun body, and the charging terminal comprises a fixing part 1, a plug-in unit 2 and a center column 3.

[0030] See also Figure 2 The fixing part 1 is columnar, the plug-in connector 2 is fixed on one end face of the fixing part 1, and the plug-in connector 2 is integrally formed with the fixing part 1. The plug-in connector 2 and the fixing part 1 are eccentrically arranged, and the fixing parts 1 of the positive and negative charging terminals are far away from each other, ensuring that the distance between the two fixing parts 1 is greater than the creepage distance between the two, avoiding mutual interference between the currents of the positive and negative charging terminals, and ensuring production safety.

[0031] See also Figure 2 The plug-in 2 is tubular, and a plurality of partition grooves 6 are provided in a circumferential direction through the plug-in 2 to divide the plug-in 2 into multiple petals, so that the plug-in 2 is in a petal-like shape. When the plug-in 2 is inserted into a receiving terminal arranged on the vehicle body, the multiple petals of the plug-in 2 embrace the receiving terminal, so that the multiple petals of the plug-in 2 can fully contact with the receiving terminal, effectively increasing the contact area and reducing the resistance.

[0032] See also Figure 2 and Figure 3The central column 3 includes: a connecting portion 4 integrally formed with the fixing member 1, the connecting portion 4 is rod-shaped, built into the middle column-shaped cavity of the plug-in 2, and the length direction is the same as the length direction of the plug-in 2; it also includes an insulating portion 5 fixed to the end of the connecting portion 4 away from the fixing member 1, the insulating portion 5 is made of insulating plastic, the length of the central column 3 is greater than the length of the middle column-shaped cavity of the plug-in 2, so that the insulating portion 5 protrudes from the plug-in 2, preventing the human body from contacting the plug-in 2 and ensuring safety in use.

[0033] The utility model replaces the portion of the center column that does not contact the human body with the connecting part 4. The connecting part 4 and the fixing part 1 have great connection strength, and the connecting part 4 and the fixing part 1 are made of the same material, which is stronger than insulating plastic and is not easy to break. While maintaining its original function, the insulating part 5 has a reduced length of the center rod compared to the prior art, and the risk of breakage is also reduced accordingly, thereby improving the overall strength of the center rod and making it less likely to break, thereby ensuring the service life of the charging terminal and the charging gun.

[0034] Example 2

[0035] See also Figure 4 The difference between this embodiment and embodiment 1 is that: in this embodiment, the insulating part 5 is configured to be tubular, sleeved on the connecting part 4 and closed at one end protruding from the plug-in unit 2, so that the connecting part 4 supports the insulating part 5, further improving the strength of the insulating part 5 and making it less likely to break; the connecting part 4 and the insulating part 5 are threadedly assembled, which facilitates the disassembly and assembly of the insulating part 5, thereby facilitating the inspection and replacement of the insulating part 5.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A charging terminal, characterized in that: It comprises a fixing part (1), a plug-in connector (2) and a central column (3); The central column (3) comprises: a connecting portion (4) formed integrally with the fixing member (1); and An insulating portion (5) is fixed to an end of the connecting portion (4) away from the fixing member (1), and the insulating portion (5) is arranged to protrude from the plug-in connector (2).

2. The charging terminal according to claim 1, characterized in that: The insulating portion (5) is configured in a tubular shape, is sleeved on the connecting portion (4), and has a closed end.

3. The charging terminal according to claim 2, characterized in that: The connecting portion (4) is threadedly fixed to the insulating portion (5).

4. The charging terminal according to claim 1, characterized in that: The plug-in connector (2) is provided with a plurality of partition grooves (6) in a circumferentially penetrating manner, so as to divide the plug-in connector (2) into multiple petals.

5. The charging terminal according to any one of claims 1 to 4, characterized in that: The fixing member (1) and the plug-in member (2) are eccentrically arranged.

6. A charging gun, characterized in that: The charging terminal comprises the charging terminal as claimed in claim 5, wherein the fixing parts (1) of the positive and negative charging terminals are far away from each other.

Images