Special single wire harness connecting structure for electric power assisted integrated wheel

Abstract

The utility model relates to the technical field of wire harness connecting structures, in particular to a special single wire harness connecting structure for an electric power-assisted integrated wheel, which comprises a movable wire harness barrel and a static wire harness barrel, and realizes synchronous locking / dismounting of external mechanical connection through an external thread section and an internal thread sleeve. Meanwhile, automatic contact / disconnection of an internal circuit is achieved through a conical embedding hole, a conical embedding cylinder and built-in movable conductive connecting pieces (a conductive metal ball and a movable conductive cylinder), the stability of conductive connection is ensured through a buffer spring and a ball positioning ring, and the dynamic durability is improved through a sliding rail, a sliding hole and other assemblies. The structure solves the problems of inconvenient disassembly, poor contact and poor synchronism in the prior art, and is suitable for scenes of motor and controller interfaces, instruments / control panels and the like.

Description

Technical Field

[0001] This utility model relates to the technical field of wire harness connection structure, specifically a single wire harness connection structure for electric power-assisted integrated wheels. Background Technology

[0002] The dedicated single-wiring harness design for integrated electric power steering wheels needs to achieve high integration, strong anti-interference, dynamic durability, and rapid maintenance. In the single-wiring harness system of integrated electric power steering wheels, there are several scenarios involving detachable connections between terminals, including: motor-controller interfaces (for quick motor / controller replacement, where the connected wiring types are power terminals and signal terminals), and instrument / control panel connections (for separate wiring harness cabling (through the vehicle frame)). For the connections between these harnesses, existing connection structures are inconvenient to disassemble, and the current or signal cannot be synchronized with external connection structures (such as housings, connecting rods, etc.) when connecting or disconnecting, resulting in poor contact after connection or inability to disconnect promptly after disassembly.

[0003] To address this issue, this technical solution designs a dedicated single-wire harness connection structure for electric-assisted integrated wheels. Utility Model Content

[0004] The purpose of this invention is to provide a dedicated single-wire harness connection structure for electric-assisted integrated wheels, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A dedicated single-wire harness connection structure for electric power-assisted integrated wheels includes a movable wire harness cylinder and a stationary wire harness cylinder. Both the movable and stationary wire harness cylinders have wire harnesses connected to their central parts. The ends of the wire harnesses are connected to corresponding structural components based on their position on the electric power-assisted integrated wheel. Both the movable and stationary wire harness cylinders are stepped structures along the axial direction. The connecting ends of the movable and stationary wire harness cylinders are open, with the ends that are far apart being sealed by connecting to cables. The inner sides of the connecting ends of the movable and stationary wire harness cylinders are embedded and connected via movable conductive connectors, while the outer sides are fixed by threaded connections. This ensures that the movable and stationary wire harness cylinders are positioned and connected in a double-layer configuration, allowing for simultaneous contact and connection of the internal circuitry while the external structure is positioned, or simultaneous disconnection of the internal circuitry while the external structure is disassembled.

[0007] The movable wire harness tube has a tapered insertion hole on its inner side at the open end, and the stationary wire harness tube has a tapered insertion sleeve at its open end. The tapered insertion hole moves outward toward the tapered insertion sleeve for embedding and positioning. The movable wire harness tube has an external thread section on its outer side at the open end, and the stationary wire harness tube has a set of internally threaded sleeves on its outer side at the open end for rotatable positioning. The external thread section is threadedly connected to the internally threaded sleeves, maintaining a detachable connection between the movable wire harness tube and the stationary wire harness tube at the open end. As the tapered insertion sleeve moves toward the tapered insertion hole, the rotation of the internally threaded sleeve controls the continuous threaded connection with the external thread section.

[0008] This enables synchronous connection between internal and external systems;

[0009] The movable conductive connector includes a transmission channel opened in the conical embedding hole and the inner end of the conical embedding cylinder. A conductive metal ball is disposed in contact with the inner side of the transmission channel away from the opening of the conical embedding hole and the conical embedding cylinder. A buffer spring is elastically connected to the side of the conductive metal ball away from the transmission channel through a ball positioning ring. The end of the buffer spring away from the conductive metal ball is connected to the inner end of the movable wire harness cylinder and the stationary wire harness cylinder (due to the stepped structure design of the movable wire harness cylinder and the stationary wire harness cylinder, the buffer spring can be stably and elastically positioned between the movable wire harness cylinder and the ball positioning ring inside the movable wire harness cylinder and the stationary wire harness cylinder). The cable end extending into the movable wire harness cylinder and the stationary wire harness cylinder passes through the center of the buffer spring and the ball positioning ring and is electrically connected to the conductive metal ball.

[0010] Compared with the prior art, the beneficial effects of this utility model are: by cooperating with the external threaded sleeve and the conical embedded structure, the synchronous action of external mechanical connection and internal circuit contact / disconnection is realized, avoiding the risk of leakage after poor contact or disassembly;

[0011] By combining a slide rail-slide hole structure with a buffer spring, the conductive metal ball and the moving conductive cylinder are kept in stable contact under vibration, adapting to the dynamic working conditions of the electric power-assisted wheel.

[0012] The threaded connection and tapered plug design simplify the disassembly and assembly process, facilitating the quick replacement or maintenance of motors and controllers.

[0013] By using an insulating layer to wrap the conductive metal sphere and an internal conductive layer design, electromagnetic interference and current leakage are reduced. Attached Figure Description

[0014] Figure 1 A schematic diagram of the external three-dimensional structure of a dedicated single-wire harness connection structure for an electric-assisted integrated wheel.

[0015] Figure 2 A three-dimensional cross-sectional view of the single-wire harness connection structure for an electric-assisted integrated wheel.

[0016] Figure 3A schematic diagram of the main sectional view of the single wire harness connection structure for the electric-assisted integrated wheel.

[0017] Figure 4 for Figure 3 A magnified structural diagram of A in the diagram.

[0018] Figure 5 for Figure 3 A magnified structural diagram of B in the diagram.

[0019] The components include: a movable wire harness tube 10, a stationary wire harness tube 11, an external threaded section 12, an internal threaded sleeve 13, a tapered embedded hole 14, a tapered embedded tube 15, a conductive metal ball 16, an insulating layer 161, a movable conductive tube 17, a built-in conductive layer 18, a slide rail 19, a transmission channel 20, a sliding hole 21, a ball positioning ring 22, a rotating slide rail 23, a rotating slide groove 24, and a buffer spring 25. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-3 The electric power steering wheel has a dedicated single-wire harness connection structure, including a movable wire harness cylinder 10 and a stationary wire harness cylinder 11. Both the movable wire harness cylinder 10 and the stationary wire harness cylinder 11 have wire harnesses connected to their central parts. The ends of the wire harnesses are connected to corresponding structural components based on their position on the electric power steering wheel. Both the movable wire harness cylinder 10 and the stationary wire harness cylinder 11 are stepped structures along the axial direction. The connecting ends of the movable wire harness cylinder 10 and the stationary wire harness cylinder 11 are open, and the ends that are far apart from each other are sealed by connecting to a cable. The inner sides of the connecting ends of the movable wire harness cylinder 10 and the stationary wire harness cylinder 11 are embedded and connected by a movable conductive connector, while the outer sides are fixed by a threaded connection. This ensures that the movable wire harness cylinder 10 and the stationary wire harness cylinder 11 are connected in a double-layer positioning configuration, achieving simultaneous contact connection of the internal circuit while the external structure is positioned, or simultaneous disconnection of the internal circuit while the external structure is disassembled.

[0025] The movable wire harness tube 10 has a tapered insertion hole 14 on the inner side of its open end, and the stationary wire harness tube 11 has a tapered insertion tube 15 at its open end. The tapered insertion hole 14 moves outward toward the tapered insertion tube 15 for embedding and positioning. The outer side of the open end of the movable wire harness tube 10 has an external thread section 12. The outer side of the open end of the stationary wire harness tube 11 has a set of internal thread sleeves 13 that are rotatably limited. The external thread section 12 and the internal thread sleeves 13 are threadedly connected to maintain a detachable connection between the movable wire harness tube 10 and the outer side of the open end of the stationary wire harness tube 11. While the tapered insertion tube 15 moves toward the tapered insertion hole 14, the internal thread sleeves 13 are rotated to control the continuous threaded movement connection with the external thread section 12.

[0026] This enables synchronous connection between internal and external systems;

[0027] The movable conductive connector includes a transmission channel 20 opened at the inner end of the conical embedding hole 14 and the conical embedding cylinder 15. A conductive metal ball 16 is disposed in contact with the inner side of the transmission channel 20 away from the opening of the conical embedding hole 14 and the conical embedding cylinder 15. A buffer spring 25 is elastically connected to the side of the conductive metal ball 16 away from the transmission channel 20 through a ball positioning ring 22. The end of the buffer spring 25 away from the conductive metal ball 16 is connected to the inner end of the movable wire harness cylinder 10 and the stationary wire harness cylinder 11 (due to the stepped structure design of the movable wire harness cylinder 10 and the stationary wire harness cylinder 11, the buffer spring 25 can be stably and elastically positioned between the movable wire harness cylinder 10 and the stationary wire harness cylinder 11 and the ball positioning ring 22). The cable end extending into the movable wire harness cylinder 10 and the stationary wire harness cylinder 11 passes through the center of the buffer spring 25 and the ball positioning ring 22 and is electrically connected to the conductive metal ball 16.

[0028] The inner wall of the transmission channel 20 is provided with a plurality of equally spaced sliding holes 21. A movable conductive cylinder 17 is axially slidably connected within the transmission channel 20 inside the movable wire harness cylinder 10. A slide rail 19 is installed on the outer circumferential wall of the movable conductive cylinder 17 at a position corresponding to the sliding hole 21. The slide rail 19 slides within the sliding hole 21 to maintain the smooth movement of the movable conductive cylinder 17. When the buffer spring 25 is in a free state, it controls the conductive metal ball 16 on one end to contact the inner side of the transmission channel 20. Simultaneously, the conductive metal ball 16 at the transmission channel 20 inside the movable wire harness cylinder 10 maintains constant conductive contact with the inner end of the movable conductive cylinder 17. When the wire harness tube 10 is connected to the stationary wire harness tube 11, as the conical insert tube 15 is embedded into the conical insert hole 14, the outer end of the movable conductive tube 17 gradually extends into the interior of the conical insert tube 15, and then slides into the sliding hole 21 at the transmission channel 20 inside the stationary wire harness tube 11 until the conical insert hole 14 and the conical insert tube 15 are fully embedded. At this time, the end of the movable conductive tube 17 extends into the transmission channel 20 inside the stationary wire harness tube 11 and contacts the conductive metal ball 16 inside the stationary wire harness tube 11. At this time, both ends of the movable conductive tube 17 are in conductive contact with the conductive metal balls 16 on both sides, thereby realizing the internal automated conductive connection.

[0029] In this embodiment of the invention, a sealing gasket is provided at the connection point of the wire harness in both the movable wire harness tube 10 and the stationary wire harness tube 11 to reduce wear at the connection point between the wire harness and the movable wire harness tube 10 and the stationary wire harness tube 11, and at the same time improve the sealing performance of the connection point.

[0030] A rotating ring is installed on the side wall of the internal threaded sleeve 13 away from the external threaded section 12. The cross section of the rotating ring is set to form a T-shaped structure. The rotating ring is rotatably connected to the outer wall of the stationary wire harness tube 11 to maintain the axial positioning of the internal threaded sleeve 13 and to continuously connect with the external threaded section 12 by rotating it.

[0031] See Figures 3-4 The ball positioning ring 22 is designed with an inwardly recessed arc shape on the side facing the conductive metal ball 16, and a rotating slide rail 23 is installed near the side wall of the conductive metal ball 16. The rotating slide rail 23 has a rotating groove 24 in the side wall of the conductive metal ball 16. The rotating slide rail 23 rotates inside the rotating groove 24, thus maintaining the limited rotation between the ball positioning ring 22 and the conductive metal ball 16. At the same time, the outer side of the conductive metal ball 16 is covered with an insulating layer 161 except at the connection with the cable and the movable conductive cylinder 17. The insulating layer 161 is used to prevent leakage of the transmitted current. At the same time, an internal conductive layer 18 is provided inside the movable conductive cylinder 17. The end of the internal conductive layer 18 protrudes outward in an arc shape at the contact position with the conductive metal ball 16, so that it can contact the non-insulating layer 161 of the conductive metal ball 16 to ensure normal conductivity.

[0032] In a preferred embodiment of the present invention, the movable wire harness tube 10 and the stationary wire harness tube 11 are applied at the interface between the motor and the controller. The stationary wire harness tube 11 can be installed on the motor, and the wire harness inside the stationary wire harness tube 11 is connected to the corresponding component inside the motor. Then, the movable wire harness tube 10 is placed on the controller, and the wire harness inside the movable wire harness tube 10 is connected to the wiring in the controller. Then, by controlling the insertion and disconnection of the movable wire harness tube 10 and the stationary wire harness tube 11, the connection and disconnection between the motor and the controller can be controlled.

[0033] In a preferred embodiment of the present invention, the conductive metal ball 16 is made of copper or silver-plated copper alloy, and its surface is polished to reduce contact resistance.

[0034] The insulation layer 161 is made of polyvinyl chloride (PVC) or thermoplastic elastomer (TPE), which is resistant to high temperature and aging.

[0035] The movable wire harness tube 10 and the stationary wire harness tube 11 are made of flame-retardant PA66 engineering plastic or anodized aluminum alloy, taking into account both lightweight and strength.

[0036] Slide rail 19 and slide hole 21: The slide rail is made of POM (polyoxymethylene) or nickel-plated metal, and the inner wall of the slide hole is coated with a lubricating coating.

[0037] The sealing gasket is made of silicone or fluororubber, which is oil-resistant and adaptable to a temperature range of -40°C to 120°C.

[0038] The working principle of this utility model is as follows: In the idle position of this device, all the aforementioned driving components (representing power elements, electrical devices, and compatible power supplies) are connected via wires. The electrical connections are completed in sequence between the working components. The detailed connection methods are well-known in the field. The following mainly describes the working principle and process, without further explanation of the electrical control.

[0039] Connection stage: Align the tapered insert 15 of the stationary wire harness tube 11 with the tapered insert hole 14 of the moving wire harness tube 10 and insert it;

[0040] Rotate the internal threaded sleeve 13 to engage with the external threaded section 12, and push the tapered insert sleeve 15 into the tapered insert hole 14;

[0041] The movable conductive cylinder 17 slides along the sliding hole 21 under the guidance of the slide rail 19 until its two ends contact the conductive metal balls 16 of the movable wire harness cylinder 10 and the stationary wire harness cylinder 11 respectively, forming a conductive path.

[0042] Disconnection phase: Rotate the internal threaded sleeve 13 in the opposite direction, and the external threaded section 12 separates from the sleeve;

[0043] The conical insert 15 exits the conical insert hole 14, and the movable conductive tube 17 retracts under the action of the buffer spring 25, and the circuit is disconnected simultaneously.

[0044] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A dedicated single-wire harness connection structure for an integrated electric power steering wheel, characterized in that: Includes a movable wire harness tube (10) and a stationary wire harness tube (11), wherein: The movable wire harness tube (10) has a tapered embedding hole (14) on the inner side of the opening end and an external thread section (12) on the outer side. The stationary wire harness tube (11) has a tapered insert tube (15) at its open end that matches the tapered insert hole (14), and an internal threaded sleeve (13) on its outer side that limits rotation. The external thread section (12) is threadedly connected to the internal thread sleeve (13) to achieve external mechanical synchronous locking; The tapered embedding hole (14) and tapered embedding cylinder (15) are provided with a transmission channel (20). The two ends of the channel are connected by a conductive metal ball (16) and a movable conductive cylinder (17) to achieve automatic contact / disconnection of the internal circuit.

2. The dedicated single-wire harness connection structure for an integrated electric power steering wheel according to claim 1, characterized in that, The movable conductive cylinder (17) is provided with a slide rail (19) on its outer circumferential wall, and a corresponding sliding hole (21) is opened on the inner wall of the transmission channel (20). The slide rail (19) and the sliding hole (21) slide together to limit the axial movement of the movable conductive cylinder (17).

3. The dedicated single-wire harness connection structure for an integrated electric power steering wheel according to claim 1, characterized in that, The conductive metal ball (16) is wrapped with an insulating layer (161) on the outside, and only the conductive area that contacts the cable and the movable conductive cylinder (17) is retained. The inner end of the movable conductive cylinder (17) is provided with an arc-shaped protruding built-in conductive layer (18) to adapt to the curved surface contact of the conductive metal ball (16).

4. The dedicated single-wire harness connection structure for electric-assisted integrated wheels according to claim 1, characterized in that, The conductive metal ball (16) is elastically connected to the buffer spring (25) through the ball positioning ring (22). The ball positioning ring (22) and the conductive metal ball (16) are limited to rotate through the rotating slide rail (23) and the rotating slide groove (24).

5. The dedicated single-wire harness connection structure for an integrated electric power steering wheel according to claim 1, characterized in that, The wire harness connection points of the movable wire harness tube (10) and the stationary wire harness tube (11) are provided with sealing gaskets.

6. The dedicated single-wire harness connection structure for an integrated electric power steering wheel according to claim 1, characterized in that, The inner walls of the stepped structure of the movable wire harness tube (10) and the stationary wire harness tube (11) are provided with slide rails (19) and slide holes (21).

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