Power connection terminal of a charging device

Abstract

The utility model discloses a kind of electricity connection terminals of charging device, comprising: female terminal, conductor bar, installation pipe and connecting plate, wherein, female terminal has accommodating cavity, the conductor bar is fixed in the accommodating cavity, and front end is stretched from the accommodating cavity, and the front end has thread;The installation pipe has connecting cavity, and the connecting cavity is connected with the front end thread;Connecting plate is arranged in the connecting cavity;Limiting portion is also formed in the connecting cavity, and spring piece is arranged between limiting portion and the connecting plate, to make connecting plate and conductor bar contact conduction.Based on the technical scheme of the present application, the present application has at least the following effects: strong stability, easy to adjust contact force, low contact resistance, convenient maintenance and replacement, reliable positioning, compact structure, improved safety performance.

Description

Technical Field

[0001] This utility model relates to new energy vehicle charging, and more particularly to the power connection terminal of a charging device. Background Technology

[0002] With the rapid development of society and the economy, and the increasing demand for energy, the call for new energy sources is growing louder. Electric vehicles are powered by battery packs, which require a charging gun to recharge them after the battery is depleted. During use, the charging gun's connector is inserted into the mounting slot of its charging head, while the other end is inserted into the electric vehicle to charge it. Existing charging guns for new energy vehicles typically consist of a connector body and connector ends integrated into both ends of the connector body. The connector ends usually have a cavity for insertion. While this structure allows for connector insertion, the connection is rigid and prone to fatigue after repeated insertions and removals. This results in unstable insertion and removal forces, and even separation, compromising the lifespan of the charging gun.

[0003] In existing technical solutions, a tight connection is mainly achieved by using a spring structure and electrical connection of male terminals. However, in actual use, the spring may loosen under the force of insertion and extraction, affecting the elastic contact effect of the spring. Utility Model Content

[0004] This utility model provides a power terminal for a charging device, which has good stability, can adjust the contact force, reduce the release resistance, and is convenient for maintenance and replacement.

[0005] A charging device includes a power terminal comprising: a female terminal, a conductor rod, a mounting tube, and a connecting plate. The female terminal has a receiving cavity, the conductor rod is fixed within the receiving cavity and its front end extends out of the receiving cavity, and the front end has threads. The mounting tube has a connecting cavity, the connecting cavity being threadedly connected to the front end. The connecting plate is disposed within the connecting cavity. A limiting portion is also formed within the connecting cavity, and a spring piece is disposed between the limiting portion and the connecting plate to allow the connecting plate to contact and conduct electricity with the conductor rod.

[0006] Preferably, a connecting ring is installed on the limiting part, and a spring piece is disposed between the connecting ring and the conductor rod.

[0007] Preferably, there is a gap between the female terminal and the mounting tube.

[0008] Preferably, the outer wall surface of the female terminal and the mounting tube has a ribbed structure, and the inner wall surface of the retaining ring has a corresponding ribbed structure, which is fitted onto the outside of the female terminal and the mounting tube.

[0009] Preferably, the outer wall surface of the female terminal and the mounting tube is polygonal, and the inner wall surface of the retaining ring is a corresponding polygonal shape, which is fitted onto the outside of the female terminal and the mounting tube.

[0010] Preferably, a first limiting protrusion is formed on the outer wall surface of the female terminal, and a second limiting protrusion is formed on the outer wall surface of the mounting tube. A retaining ring is located between the first limiting protrusion and the second limiting protrusion, and a spring keeps the retaining ring simultaneously locked outside the female terminal and the mounting tube; the deformation range of the spring is sufficient to completely disengage the retaining ring from the female terminal.

[0011] Preferably, a receiving surface is formed on the outer wall surface of the mounting tube, and the spring is located outside the receiving surface and between the second limiting protrusion and the retaining ring.

[0012] Based on the technical solution of this application, this application has at least the following effects: strong stability, easy adjustment of contact force, low contact resistance, convenient maintenance and replacement, reliable positioning, compact structure, and improved safety performance. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the power connection terminals of the charging device of this utility model.

[0014] Figure 2 This is a schematic diagram of the power connection terminals of the charging device of this utility model.

[0015] Figure 3 This is a schematic diagram showing the working state of the power connection terminal of the charging device of this utility model.

[0016] Figure 4 This is another schematic diagram showing the working state of the power connection terminal of the charging device of this utility model. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] This utility model discloses a power terminal for a charging device, which can be used in charging sockets for new energy vehicles, or in other fields requiring plug-in electrical connections.

[0019] See Figure 1 and Figure 2 The electrical terminal includes: a female terminal 1, a conductor rod 2, a mounting tube 3, a connecting cavity 4, a connecting plate 8, and a spring 9. The female terminal 1 and the mounting tube 3 are hollow and are used to pass through the conductor rod 2 or the male terminal 0.

[0020] The female terminal 1 has a receiving cavity, which is formed by the aforementioned hollow structure. The conductor rod 2 extends into the receiving cavity, and the front end of the conductor rod 2 protrudes from the receiving cavity. The front end 21 has threads. The conductor rod 2 is fixed inside the receiving cavity.

[0021] The mounting tube 3 has a connecting cavity 4, one end of which is sleeved on the conductor rod 2. The inner wall of the connecting cavity 4 is also threaded, enabling a threaded connection between the mounting tube 3 and the conductor rod 2. The other end of the connecting cavity 4 is used to connect to the male terminal 0. The term "male terminal 0" can be used generally, referring to components other than the male terminal 0 corresponding to the female terminal 1, such as conductors or communication lines. For example, the male terminal could be a charging gun for a new energy vehicle. The power connection terminal in this application could be a charging interface for a new energy vehicle.

[0022] A connecting plate 8 is provided inside the connecting cavity 4. On the side near the conductor rod 2, the connecting plate 8 is pushed against the conductor rod 2 by a spring piece 9, thus disengaging the connection between them. A limiting portion 31 is also formed inside the connecting cavity 4. A spring piece 9 is provided between the limiting portion 31 and the connecting plate 8 to allow the connecting plate 8 to contact and conduct with the conductor rod 2. Preferably, a connecting ring 5 can also be installed on the limiting portion 31, with the spring piece 9 positioned between the connecting ring 5 and the conductor rod 2. The limiting portion 31 reduces the inner diameter of the connecting cavity 4 at this location, serving to both hold the spring piece 9 in place and allow the male terminal 0 to enter.

[0023] During operation or charging, the male terminal 0 is inserted into the spring through the connecting cavity 4 to achieve electrical connection. The spring 9 is electrically connected to the conductor rod 2 through the connecting plate 8. The large contact surface can effectively reduce resistance.

[0024] There is a gap between the female terminal 1 and the mounting tube 3. The mounting tube 3 is threadedly connected to the conductor rod 2. When the mounting tube 3 is rotated, the distance between the female terminal 1 and the mounting tube 3 can be adjusted. This gap is a space reserved for this adjustment.

[0025] The outer walls of the female terminal 1 and the mounting tube 3 have ribbed structures, and the inner wall of the retaining ring 7 has corresponding ribbed structures, which are fitted around the female terminal 1 and the mounting tube 3. For example, the outer walls of the female terminal 1 and the mounting tube 3 are both circular, and one or more raised ribs are formed on the circular outer walls. In this way, when the retaining ring 7 is fitted around the female terminal 1 and the mounting tube 3, it can prevent the female terminal 1 and the mounting tube 3 from rotating relative to each other, thus preventing changes in their positional relationship.

[0026] In another embodiment, the outer wall surface of the female terminal 1 and the mounting tube 3 is polygonal, and the inner wall surface of the retaining ring 7 is a corresponding polygonal, which is sleeved on the outside of the female terminal 1 and the mounting tube 3.

[0027] Whether the outer wall is set with ribs or is set as a polygon, the purpose is to prevent the relative position of the female terminal 1 and the mounting tube 3 from changing through the retaining ring 7.

[0028] The retaining ring 7 is configured to slide along the axial direction of the female terminal 1 or the mounting tube 3, so that it can be disengaged from the female terminal 1 or the mounting tube 3, thereby allowing the mounting tube 3 to rotate to adjust its positional relationship with the female terminal 1.

[0029] For example, a first limiting protrusion 11 is formed on the outer wall surface of the female terminal 1, and a second limiting protrusion 32 is formed on the outer wall surface of the mounting tube 3. The retaining ring 7 is located between the first limiting protrusion 11 and the second limiting protrusion 32, and the spring 6 keeps the retaining ring 7 in a position where it is simultaneously locked outside the female terminal 1 and the mounting tube 3. The deformation range of the spring 6 is sufficient to completely detach the retaining ring 7 from the female terminal 1.

[0030] A receiving surface 33 is formed on the outer wall of the mounting tube 3. The spring 6 is located outside the receiving surface 33 and between the second limiting protrusion 32 and the retaining ring 7.

[0031] When the contact force decreases due to wear of the spring, the mounting tube can be rotated to bring the mounting tube 3 and the female terminal 1 closer together, which can squeeze the spring 9 to restore its elasticity.

[0032] In this application, the male terminal 0 is inserted into the limiting part 31 during operation, until it is inserted into the spring piece 9, thereby achieving electrical connection. The spring piece is electrically connected to the conductor rod through the connecting plate, and the contact surface is large, which can effectively reduce resistance.

[0033] During installation, specifically when installing the electrical terminal, first install the connecting ring 5, spring 9, and connecting plate 8 into the connecting cavity 4. Then, fit the installation tube 3 over the conductor rod 2 and screw it on. The connection is achieved by the threaded part on the conductor rod 2. At this point, pull the retaining ring 7 to allow relative rotation between the installation tube 3 and the female terminal 1. Figure 1 The middle step involves pulling the retaining ring 7 to the left. Once it is screwed in place, the retaining ring is released, causing it to simultaneously engage with both the female terminal 1 and the mounting tube 3, thereby locking the angle of the mounting tube 3 and preventing its position from changing.

[0034] When the contact force decreases due to wear of the spring 9, such as Figure 4 As shown, by moving the retaining ring 7 and then screwing on the mounting tube 3, the mounting tube 3 is brought closer to the female terminal 1, thereby compressing the spring 9 and increasing the inward contraction of the spring 9, thus increasing the contact force and extending the service life of the spring. When the spring needs to be replaced, simply unscrew the mounting tube and repeat the above installation process.

[0035] The power connection terminal of the charging device provided by this utility model has the following beneficial effects:

[0036] Enhanced stability: The design of components such as spring 6, retaining ring 7 and limiting part 31 ensures the stability of spring 9 after long-term use, avoiding loosening or falling off due to frequent insertion and removal.

[0037] Easy to adjust contact force: When the contact force of the spring 9 decreases due to wear, the inward movement of the spring can be increased by adjusting the position of the mounting tube 3 and the female terminal 1, thereby improving the contact force and extending the service life of the spring.

[0038] Reduce contact resistance: A larger contact area can effectively reduce contact resistance, improve power transmission efficiency, and reduce energy loss.

[0039] Easy maintenance and replacement: This design allows users to easily replace worn spring 9 with simple operation, reducing maintenance costs and difficulty.

[0040] Reliable positioning: The retaining ring 7 cooperates with the female terminal 1 and the mounting tube 3 to ensure that the position of the mounting tube is fixed and prevent it from rotating or moving during use.

[0041] Compact structure: All components are cleverly integrated together, which not only reduces space occupation but also simplifies the overall structure and improves the reliability and durability of the product.

[0042] Enhanced safety: Stable connection and low resistance help reduce heat generation and improve the safety of the entire charging system.

[0043] In summary, this invention not only solves the problems existing in the prior art, but also improves the reliability and service life of the power terminal, providing a more efficient and safer solution for charging new energy vehicles.

[0044] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A power connection terminal of a charging device, characterized by, include: The components include a female terminal (1), a conductor rod (2), a mounting tube (3), and a connecting plate (8), among which... The female terminal (1) has a receiving cavity, the conductor rod (2) is fixed in the receiving cavity, and the front end (21) extends out of the receiving cavity, and the front end (21) has threads; The mounting tube (3) has a connecting cavity (4), which is threadedly connected to the front end (21); the connecting plate (8) is provided in the connecting cavity (4); a limiting part (31) is also formed in the connecting cavity (4), and a spring piece (9) is provided between the limiting part (31) and the connecting plate (8) so that the connecting plate (8) can contact and conduct with the conductor rod (2).

2. The power connection terminal of the charging device according to claim 1, characterized in that, A connecting ring (5) is installed on the limiting part (31), and a spring piece (9) is disposed between the connecting ring (5) and the conductor rod (2).

3. The power connection terminal of the charging device according to claim 1, characterized in that, There is a gap between the female terminal (1) and the mounting tube (3).

4. The power connection terminal of the charging device according to claim 1, characterized in that, The outer wall surfaces of the female terminal (1) and the mounting tube (3) are formed with ribbed structures, and the inner wall surface of the retaining ring (7) has a corresponding ribbed structure, which is fitted around the female terminal (1) and the mounting tube (3).

5. The power connection terminal of the charging device according to claim 1, characterized in that, The outer wall surfaces of the female terminal (1) and the mounting tube (3) are polygonal, and the inner wall surface of the retaining ring (7) is a corresponding polygonal, which is fitted around the female terminal (1) and the mounting tube (3).

6. The power connection terminal of the charging device according to any one of claims 1, 4, or 5, characterized in that, A first limiting protrusion (11) is formed on the outer wall surface of the female terminal (1), and a second limiting protrusion (32) is formed on the outer wall surface of the mounting tube (3). A retaining ring (7) is located between the first limiting protrusion (11) and the second limiting protrusion (32), and a spring (6) keeps the retaining ring (7) in a position that simultaneously fits the female terminal (1) and the mounting tube (3). The deformation range of the spring (6) is such that the retaining ring (7) is completely disengaged from the female terminal (1).

7. The power connection terminal of the charging device according to claim 6, characterized in that, A receiving surface (33) is formed on the outer wall surface of the mounting tube (3), and the spring (6) is located outside the receiving surface (33) and between the second limiting protrusion (32) and the retaining ring (7).

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