A charging pile swing arm mechanism

Abstract

The utility model relates to charging pile technical field, concretely is a kind of charging pile swing arm mechanism, install in the top surface of charging pile body, including the bearing pedestal of installation setting on the top surface of the charging pile, swing arm mounting support is installed and arranged on the bearing pedestal, rotating shaft is installed and arranged in the swing arm mounting support, swing arm is set on the rotating shaft and is installed and arranged;Swing arm mounting support is U-shaped structure, and coaxial rotating shaft mounting hole is set on the upper and lower two inner walls, and rotating shaft is rotatably installed in the rotating shaft mounting hole of corresponding by bearing;A pair of arc limit grooves is opened in the lower inner wall of swing arm mounting support along the circumferential symmetry of rotating shaft, and the arc length of arc limit groove corresponds the central angle of 180 °, when the bottom of swing arm rotates to the arc limit groove and is limited, to limit that swing arm can only realize 180 ° back and forth rotation.

Description

Technical Field

[0001] This utility model relates to the field of charging pile technology, specifically a charging pile swing arm mechanism. Background Technology

[0002] With the rapid development of the electric vehicle industry, the demand for charging infrastructure has increased dramatically. When using charging stations, it's crucial to consider better cable recycling mechanisms to prevent cable tangling, knots, or accidental damage. This not only affects charging efficiency but can also shorten equipment lifespan and cause inconvenience for users. Current cable recycling mechanisms are often simple in structure, lack automation, and rely on manual intervention, easily leading to cable tangling or excessive pulling, increasing maintenance costs and safety risks.

[0003] In the prior art, Chinese invention patent publication number CN120363760A discloses a charging pile swing arm device and a charging pile. This device uses a main shaft with a coil spring inserted into the base, and also includes a coil spring balancer on the main shaft. This sequential structure drives the swing arm to rotate in two directions. While this technical solution solves the technical problems of existing swing arm devices lacking automatic reset function and the charging cable easily wearing down on the ground after being pulled out, this structure is relatively complex, increasing manufacturing costs. Since not all charging piles require a reset function, this invention patent also requires the main arm and auxiliary arm to be connected via first and second connecting parts, further complicating the structure. Therefore, this application, based on practical needs, designs a charging pile swing arm mechanism with a relatively simple structure and lower manufacturing cost. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a charging pile swing arm mechanism with a compact overall structure and high functional integration. By combining limiters, cable management, and wear-resistant design, it improves the practicality and user experience of the charging pile swing arm mechanism, adapts to the needs of various charging scenarios, and solves the problems of maintenance difficulties and poor stability caused by the complex structure of existing swing arm mechanisms.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a charging pile swing arm mechanism, installed on the top surface of the charging pile body, including a bearing base installed on the top surface of the charging pile, a swing arm mounting bracket installed on the bearing base, a rotating shaft installed inside the swing arm mounting bracket, and a swing arm fitted on the rotating shaft; the swing arm mounting bracket has a U-shaped structure, with coaxial rotating shaft mounting holes corresponding to its upper and lower inner walls, and the rotating shaft is rotatably installed in the corresponding rotating shaft mounting holes through the bearing; a pair of arc-shaped limiting grooves are symmetrically formed on the lower inner wall of the swing arm mounting bracket along the circumference of the rotating shaft, the arc length of the arc-shaped limiting grooves corresponding to a central angle of 180°, when the bottom of the swing arm rotates around the rotating shaft into the arc-shaped limiting grooves for limiting, thereby restricting the swing arm to only be able to rotate back and forth by 180°.

[0008] Furthermore, the swing arm includes a main arm connector, one end of which is fitted to the rotating shaft, and the other end of which is plugged into and connected to the main arm. The other end of the main arm is plugged into and connected to a secondary arm mounting bracket. A hinge shaft is hingedly mounted inside the secondary arm mounting bracket, and a secondary arm is rotatably mounted on the hinge shaft. The axis of the hinge shaft is perpendicular to the axis of the rotating shaft.

[0009] Furthermore, the auxiliary arm mounting bracket has a U-shaped structure, and its inner side wall is machined into an inclined surface to limit the angle of rotation of the auxiliary arm around the hinge axis, thereby restricting the auxiliary arm to only be able to rotate back and forth at 225°.

[0010] Furthermore, the angle between the inclined surfaces on both sides of the inner wall of the U-shaped structure of the auxiliary arm mounting bracket and the horizontal plane is 45°. When the end of the auxiliary arm abuts against the inclined surface, its rotation angle reaches the 225° limit position.

[0011] Furthermore, multiple cable conduits are installed at the bottom of both the main arm and the auxiliary arm, and these cable conduits are used to lay cables connecting the charging gun and the charging pile.

[0012] Furthermore, the cable conduit has an inverted U-shaped structure, and its open end is fixedly installed at the bottom of the main arm or auxiliary arm by screws. The U-shaped groove of the cable conduit is used to accommodate and constrain the charging cable.

[0013] Furthermore, the outer surfaces of both the rotating shaft and the hinge shaft are coated with a wear-resistant coating to enhance the durability of the rotating components and reduce frictional loss.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a charging pile swing arm mechanism, which has the following beneficial effects:

[0016] 1. The U-shaped structure of the auxiliary boom mounting bracket and the 45° inclined surface design of the inner side wall effectively limit the auxiliary boom to rotating within a range of 225°, improving the stability and safety of the mechanism operation and avoiding component damage or cable entanglement caused by excessive rotation.

[0017] 2. The inverted U-shaped cable conduits installed at the bottom of the main boom and auxiliary boom are secured with screws to firmly restrain the charging cables within the U-shaped grooves, preventing the cables from falling off, being worn, or being pulled by external forces, thus extending the service life of the cables and simplifying the maintenance process.

[0018] 3. The wear-resistant coating applied to the surfaces of the rotating shaft and hinge shaft significantly reduces frictional loss during rotation, enhances the durability and reliability of the entire swing arm mechanism, and reduces the failure rate and maintenance costs during long-term use.

[0019] 4. The overall structure is compact and highly integrated. By combining limit switches, cable management and wear-resistant design, the practicality and user experience of the charging pile swing arm mechanism are improved, adapting to the needs of various charging scenarios.

[0020] 5. The structure is relatively simplified, the motion transmission path of the swing arm mechanism is shortened, avoiding the swing arm swaying problem caused by the gap between multiple parts in the prior art, improving the accuracy of swing arm positioning, and reducing the number of vulnerable parts, which facilitates daily maintenance and troubleshooting, and solves the problems of maintenance difficulties and poor stability caused by the complex structure of the swing arm mechanism in the background art. Attached Figure Description

[0021] Figure 1 This is a perspective view of a charging pile swing arm mechanism according to the present invention.

[0022] Figure 2 for Figure 1 Exploded view of the structure;

[0023] Figure 3 for Figure 1 Exploded view of the bearing base and swing arm mounting support in the image;

[0024] Figure 4 for Figure 1 A three-dimensional view of the auxiliary boom mounting support;

[0025] Figure 5 This is a perspective view of a charging pile swing arm mechanism of the present invention installed on a charging pile;

[0026] In the diagram: 1. Charging pile; 2. Bearing base; 3. Swing arm mounting bracket; 301. Rotating shaft mounting hole; 302. Arc-shaped limiting groove; 4. Rotating shaft; 5. Swing arm; 501. Main arm connector; 502. Main arm; 503. Auxiliary arm mounting bracket; 5031. Inclined surface; 504. Hinge shaft; 505. Auxiliary arm; 506. Cable conduit. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-5 A charging pile swing arm mechanism, typically a pair, symmetrically installed on the top surface of the charging pile 1 body, includes a bearing base 2 installed on the top surface of the charging pile 1, the bearing base 2 being fastened by bolts, and a swing arm mounting bracket 3 installed on it. A rotating shaft 4 is precision machined and installed within the swing arm mounting bracket 3, and a swing arm 5 is fitted onto the rotating shaft 4. The swing arm mounting bracket 3 has a U-shaped structure, with coaxial rotating shaft mounting holes 301 corresponding to its upper and lower inner walls. The rotating shaft 4 passes through... The deep groove ball bearing is rotatably installed in the corresponding rotating shaft mounting hole 301 to ensure low-friction rotation; a pair of arc-shaped limiting grooves 302 are symmetrically opened on the lower inner wall of the swing arm mounting support 3 along the circumference of the rotating shaft 4. The arc length of the arc-shaped limiting groove 302 corresponds to a central angle of 180°. When the bottom of the swing arm 5 rotates around the rotating shaft 4 into the arc-shaped limiting groove 302 for limiting, the swing arm 5 can only achieve 180° back and forth rotation. This mechanical limiting design effectively prevents out-of-range movement.

[0029] In the above embodiment, the swing arm 5 includes a main arm connector 501. One end of the main arm connector 501 is fitted to the rotating shaft 4. The other end of the main arm connector 501 is fixedly connected to the main arm 502 by a pin. The other end of the main arm 502 is connected to the auxiliary arm mounting support 503 by a pin. A hinge shaft 504 is hingedly installed inside the auxiliary arm mounting support 503. An auxiliary arm 505 is rotatably fitted on the hinge shaft 504. The axis of the hinge shaft 504 is perpendicular to the axis of the rotating shaft 4, which facilitates multi-directional adjustment. The auxiliary boom mounting bracket 503 has a U-shaped structure, with its inner side walls machined into inclined surfaces 5031. This limits the rotation angle of the auxiliary boom 505 around the hinge shaft 504, restricting the auxiliary boom 505 to a maximum rotation of 225°. The inclined surfaces 5031 on both sides of the U-shaped inner walls of the auxiliary boom mounting bracket 503 form an angle of 45° with the horizontal plane. When the end of the auxiliary boom 505 abuts against the inclined surfaces 5031, its rotation angle reaches the 225° limit position, ensuring safe and reliable operation. The outer surfaces of both the rotating shaft 4 and the hinge shaft 504 are coated with a polytetrafluoroethylene wear-resistant coating to enhance the durability of the rotating components, reduce frictional wear, and extend the overall service life.

[0030] In the above-described embodiments, multiple cable conduits 506 are installed at the bottom of both the main boom 502 and the auxiliary boom 505. The cable conduits 506 are used to lay the cables connecting the charging gun and the charging pile 1, facilitating the orderly arrangement of the cables. The cable conduits 506 have an inverted U-shaped structure, and their open ends are fixed to the bottom of the main boom 502 or the auxiliary boom 505 by screws. The U-shaped grooves of the cable conduits 506 are used to accommodate and constrain the charging cables, preventing the cables from becoming loose or worn. Each bracket is evenly spaced.

[0031] The working principle of the above embodiments is as follows:

[0032] During use, the user can manually operate the auxiliary arm 505 or the main arm 502 to make the swing arm 5 rotate smoothly around the rotating shaft 4, thereby adjusting the position of the charging gun. The rotating shaft 4, supported by bearings, ensures low-friction rotation, and the arc-shaped limiting groove 302 restricts the swing arm 5 to swing back and forth within a 180° range, effectively preventing overtravel risks. Simultaneously, the auxiliary arm 505 rotates around the hinge shaft 504, and under the limiting action of the inclined surface of the auxiliary arm mounting bracket 503, it achieves a 225° multi-directional adjustment, allowing the user to flexibly position the charging gun according to the vehicle's location. The cable conduits 506 at the bottom of the main arm 502 and the auxiliary arm 505 are used to systematically lay the charging cables, preventing them from becoming loose, tangled, or worn. The cables are constrained by inverted U-shaped grooves, ensuring smooth extension and retraction as the swing arm moves during operation. The entire mechanism is protected by a PTFE wear-resistant coating, reducing frictional loss, extending service life, and improving the safety and reliability of the charging process.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A charging pile swing arm mechanism, installed on the top surface of the charging pile (1) body, characterized in that: The system includes a bearing base (2) installed on the top surface of the charging pile (1), a swing arm mounting bracket (3) installed on the bearing base (2), a rotating shaft (4) installed inside the swing arm mounting bracket (3), and a swing arm (5) fitted on the rotating shaft (4). The swing arm mounting bracket (3) has a U-shaped structure, and its upper and lower inner walls are provided with coaxial rotating shaft mounting holes (301). The rotating shaft (4) is rotatably mounted in the corresponding rotating shaft mounting hole (301) through a bearing. A pair of arc-shaped limiting grooves (302) are symmetrically provided on the lower inner wall of the swing arm mounting bracket (3) along the circumference of the rotating shaft (4). The arc length of the arc-shaped limiting groove (302) corresponds to a central angle of 180°. When the bottom of the swing arm (5) rotates around the rotating shaft (4) into the arc-shaped limiting groove (302) for limiting, the swing arm (5) can only achieve a 180° back and forth rotation.

2. The charging pile swing arm mechanism according to claim 1, characterized in that: The swing arm (5) includes a main arm connector (501), one end of which is fitted to the rotating shaft (4), and the other end of which is plugged into the main arm (502). The other end of the main arm (502) is plugged into the auxiliary arm mounting bracket (503), and a hinge shaft (504) is hinged inside the auxiliary arm mounting bracket (503). The auxiliary arm (505) is rotatably mounted on the hinge shaft (504).

3. The charging pile swing arm mechanism according to claim 2, characterized in that: The auxiliary arm mounting bracket (503) has a U-shaped structure, and its inner side wall is machined into an inclined surface (5031) to limit the angle of rotation of the auxiliary arm (505) around the hinge axis (504), thereby limiting the auxiliary arm (505) to only be able to rotate back and forth at 225°.

4. The charging pile swing arm mechanism according to claim 3, characterized in that: The inclined surfaces (5031) on both sides of the U-shaped inner wall of the auxiliary arm mounting bracket (503) form an angle of 45° with the horizontal plane. When the end of the auxiliary arm (505) abuts against the inclined surface (5031), its rotation angle reaches the 225° limit position.

5. A charging pile swing arm mechanism according to claim 3, characterized in that: Multiple cable conduits (506) are installed at the bottom of both the main arm (502) and the auxiliary arm (505). The cable conduits (506) are used to lay cables connecting the charging gun and the charging pile (1).

6. The charging pile swing arm mechanism according to claim 5, characterized in that: The cable conduit (506) has an inverted U-shaped structure, and its open end is fixedly installed at the bottom of the main arm (502) or the auxiliary arm (505) by screws. The U-shaped groove of the cable conduit (506) is used to accommodate and constrain the charging cable.

7. The charging pile swing arm mechanism according to claim 3, characterized in that: The outer surfaces of the rotating shaft (4) and the hinge shaft (504) are coated with a wear-resistant coating to enhance the durability of the rotating parts and reduce frictional loss.

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