EPS power-assisted connecting structure and tricycle

Abstract

The utility model provides an EPS (electric power steering) power-assisted connecting structure and a tricycle, which are connected to an electric booster and comprise a first transmission rod, a second transmission rod, a third transmission rod and a fourth transmission rod, the second transmission rod is positioned on the side surface of the first transmission rod and is parallel to the axis of the first transmission rod; and the two transmission gears are arranged at an interval, the two transmission gears are in transmission connection through a carrier gear, and the two transmission gears are connected to the end of the second transmission rod and the output end of the electric booster correspondingly, so that the first transmission rod and the second transmission rod rotate synchronously. According to the power-assisted steering system, the first transmission rod and the second transmission rod are arranged in parallel, and the transmission gear and the carrier gear are used for power transmission, so that unnecessary accessories are reduced, the structure of the whole power-assisted steering system is more compact and simpler, the size of the power-assisted steering system can be effectively reduced, and the power-assisted steering system adapts to the limited space below an instrument desk of the tricycle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to an EPS power-assisted connection structure and a tricycle. Background Technology

[0002] EPS, or Electric Power Steering, is a system that provides steering assistance directly through an electric motor. It eliminates the need for the power steering pump, hoses, hydraulic fluid, transmission belt, and pulley mounted on the engine required by hydraulic power steering systems, saving energy. It also features simple adjustment, flexible assembly, and the ability to provide steering assistance in various conditions. However, current electric power steering systems have a relatively large overall structure and many parts. Due to the limited space under the dashboard of three-wheeled vehicles, directly applying these systems to three-wheeled vehicles would present a space constraint during assembly. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an EPS power steering connection structure and a tricycle, which solves the problem of limited assembly space when directly applying an electric power steering system to a tricycle due to insufficient space under the dashboard.

[0004] According to the embodiments of this utility model, the following technical solution is adopted:

[0005] EPS booster connection structure, connected to the electric booster, includes:

[0006] The first transmission rod is connected to the input end of the electric booster;

[0007] The second transmission rod is located on the side of the first transmission rod and is parallel to the axis of the first transmission rod; and

[0008] Two transmission gears are arranged alternately and connected by a bridge gear. The two transmission gears are respectively connected to the end of the second transmission rod and the output end of the electric booster so that the first transmission rod and the second transmission rod rotate synchronously.

[0009] Preferably, the second transmission rod is fitted with a protective shell, and the protective shell is fastened with a cover plate to form a closed protective cavity. The bridge gear and the two transmission gears are all located in the protective cavity.

[0010] Preferably, the protective cavity is provided with a second bearing that corresponds one-to-one with the bridge gear and the two transmission gears, and the shafts of the bridge gear and the transmission gears are located in the corresponding second bearings.

[0011] Preferably, the first transmission rod is fitted with a mounting plate, and the mounting plate has a number of mounting holes for bolts to pass through.

[0012] Preferably, a limiting sleeve is fixedly provided on one side of the mounting plate. The limiting sleeve has a through hole coaxial with the second transmission rod, and the second transmission rod passes through the through hole.

[0013] Preferably, a first bearing is provided inside the through hole, and a second transmission rod is located in the inner ring of the first bearing.

[0014] Preferably, it also includes a connecting rod, both ends of which are rotatably provided with front swing arms, one of which is connected to the second transmission rod.

[0015] Preferably, both the end of the first transmission rod and the end of the second transmission rod are provided with threaded sections and receiving platforms, wherein a front swing arm is located between the threaded section and the receiving platform of the second transmission rod.

[0016] Preferably, a limiting groove is provided between the threaded section and the receiving platform.

[0017] According to embodiments of this utility model, the following technical solutions are also adopted:

[0018] The tricycle includes a steering frame and an EPS power steering connection structure, with the steering frame mounted on the end of the first drive rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In this design, the first transmission rod serves as the input end for direction, and the second transmission rod serves as the output end. When the first transmission rod is rotated, it transmits torque to the electric booster, which then transmits it to the corresponding transmission gear through the output end of the electric booster. Under the action of the intermediate gear, the second transmission rod rotates synchronously, transmitting the directional torque to it. The assisted second transmission rod then transmits the directional torque to the tricycle's steering mechanism, achieving directional adjustment. The first and second transmission rods are arranged in parallel and utilize the transmission gear and intermediate gear for power transmission, connecting the tricycle's input and output ends. This reduces unnecessary components, making the entire power steering system more compact and simple, effectively reducing its size and adapting to the limited space under the tricycle's dashboard. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the connection structure in an embodiment of the present utility model.

[0022] Figure 2 This is a schematic diagram of the connection structure from another angle in an embodiment of this utility model.

[0023] Figure 3 This is a bottom view of the connecting structure without the protective shell in an embodiment of this utility model.

[0024] Figure 4 This is a schematic diagram of the connecting structure installed on a tricycle in an embodiment of this utility model.

[0025] In the above attached figures: 1. First transmission rod; 101. Limiting groove; 102. Threaded section; 103. Receiving platform; 2. Second transmission rod; 3. Electric booster; 4. Limiting sleeve; 401. First bearing; 5. Transmission gear; 501. Second bearing; 6. Axle gear; 7. Protective shell; 701. Cover plate; 8. Mounting plate; 9. Connecting rod; 901. Front swing arm; 10. Steering frame. Detailed Implementation

[0026] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0027] like Figures 1 to 3 As shown, this utility model embodiment proposes an EPS booster connection structure, connected to the electric booster 3, comprising:

[0028] The first transmission rod 1 is connected to the input end of the electric booster 3;

[0029] The second transmission rod 2 is located on the side of the first transmission rod 1 and is parallel to the axis of the first transmission rod 1; and

[0030] Two transmission gears 5 are arranged alternately and are connected by a bridge gear 6. The two transmission gears 5 are respectively connected to the end of the second transmission rod 2 and the output end of the electric booster 3 so that the first transmission rod 1 and the second transmission rod 2 rotate synchronously.

[0031] In this embodiment of the invention, when turning, the first transmission rod 1 is used as the input end of the direction, and the second transmission rod 2 is used as the output end of the direction. When the first transmission rod 1 is rotated to turn, the first transmission rod 1 transmits the torque and rotation direction to the input end of the electric booster 3. After receiving the torque and rotation direction, the internal sensor transmits the torque and rotation direction to the corresponding transmission gear 5 through the motor. Under the action of the bridge gear 6, the second transmission rod 2 rotates synchronously, and the rotation directions of the first transmission rod 1 and the second transmission rod 2 are the same. The directional torque is transmitted to the second transmission rod 2. Finally, the assisted second transmission rod 2 transmits the directional torque to the tricycle steering structure to achieve direction adjustment. Under the action of the gear set, the rotation direction can be kept consistent.

[0032] By setting the first transmission rod 1 and the second transmission rod 2 in parallel and arranging them along the length of the tricycle, and using the transmission gear 5 and the bridge gear 6 for power transmission, unnecessary accessories are reduced, making the structure of the entire power steering system more compact and simple. This effectively reduces the size of the power steering system, thus adapting to the limited space under the tricycle's dashboard.

[0033] In the embodiments of this utility model, such as Figure 2 As shown, the second transmission rod 2 is fitted with a protective shell 7, and the protective shell 7 is fastened with a cover plate 701 to form a closed protective cavity. The bridge gear 6 and the two transmission gears 5 are all located in the protective cavity. With the cooperation of the protective shell 7 and the cover plate 701, a protective cavity can be formed to protect the bridge gear 6 and the two transmission gears 5. This can effectively prevent dust, moisture and other impurities from entering the transmission system, keep the internal parts clean, extend the service life of the system, and prevent external objects from accidentally contacting the rotating parts, reducing the risk of accidental injury and improving safety. In addition, it can also isolate the noise generated by the transmission gears 5 and bridge gear 6 during operation to a certain extent.

[0034] Specifically, such as Figure 3 As shown, the protective cavity is equipped with second bearings 501 that correspond one-to-one with the bridge gear 6 and the two transmission gears 5. The shafts of the bridge gear 6 and the transmission gears 5 are located in the corresponding second bearings 501. The second bearings 501 can support the shafts of the bridge gear 6 and the transmission gears 5, reduce the friction between moving parts, make the rotation smoother, and thus reduce the energy consumption during operation. In addition, the second bearings 501 have good concentricity and positioning functions, which can ensure the accurate position of the bridge gear 6 and the transmission gears 5 when operating at high speed, and reduce vibration and noise.

[0035] Specifically, such as Figure 1 As shown, the first transmission rod 1 is fitted with a mounting plate 8, which has several mounting holes for bolts to pass through. The mounting plate 8 is connected to the upper end face of the electric booster 3 and is used to connect the vehicle assembly structure and the bearing seat of the first transmission rod 1. For ease of connection, as shown... Figure 3 As shown, the electric booster 3 and the protective shell 7 are also provided with a U-shaped connecting bracket. The connecting bracket is located on the lower end face of the electric booster 3 and is used to connect the vehicle assembly structure and the protective shell 7 to improve the load-bearing effect.

[0036] Specifically, such as Figure 1 As shown, a limiting sleeve 4 is fixedly provided on one side of the mounting plate 8. The limiting sleeve 4 has a through hole coaxial with the second transmission rod 2, through which the second transmission rod 2 passes. The presence of the limiting sleeve 4 can axially position the second transmission rod 2, ensuring that it will not move unnecessarily along the axial direction during operation, thereby improving the stability and reliability of the system. Furthermore, as... Figure 3 As shown, a first bearing 401 is provided in the through hole, and a second transmission rod 2 is located in the inner ring of the first bearing 401. The first bearing 401 can provide radial constraint to prevent the second transmission rod 2 from swinging in the lateral direction, ensuring its smoothness during rotation and reducing additional wear and noise caused by shaking.

[0037] Based on the above solutions, such as Figure 4 As shown, it also includes a connecting rod 9, with front rotating arms 901 rotatably mounted at both ends of the connecting rod 9. One of the front rotating arms 901 is connected to the second transmission rod 2. With the cooperation of the connecting rod 9 and the front rotating arms 901 at both ends of the connecting rod 9, when the second transmission rod 2 rotates, it drives the front rotating arm 901 mounted on the second transmission rod 2 to rotate, thereby adjusting the end of the connecting rod 9. Then, the other end of the connecting rod 9 is used to rotate and adjust the other front rotating arm 901 (the other front rotating arm 901 is also fixed on the steering shaft of the steering mechanism), so that the steering mechanism can be driven through the other front rotating arm 901.

[0038] like Figure 1 As shown, both the end of the first transmission rod 1 and the end of the second transmission rod 2 are provided with threaded sections 102 and receiving platforms 103. A front swing arm 901 is located between the threaded section 102 and the receiving platform 103 of the second transmission rod 2. The combined design of the threaded section 102 and the receiving platform 103 can provide a reliable connection method. The front swing arm 901 can be firmly fixed on the first transmission rod 1 and the second transmission rod 2 by threaded fasteners (such as nuts), ensuring that the connection will not loosen under dynamic load conditions.

[0039] like Figure 1 As shown, a limiting groove 101 is provided between the threaded section 102 and the receiving platform 103; the front swing arm 901 has a limiting block inside, which can be engaged in the limiting groove 101 when the front swing arm 901 is installed, so as to ensure the circumferential positioning of the front swing arm 901.

[0040] like Figure 4 As shown, this utility model embodiment also proposes a tricycle, including a steering frame 10 and the above-mentioned EPS power assist connection structure. The steering frame 10 is installed at the end of the first transmission rod 1. The specific structure of the EPS power assist connection structure is as described in the above embodiment. Since this tricycle adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought about by the technical solutions of the above embodiment, which will not be described in detail here.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An EPS power-assisted connection structure, connected to an electric power booster (3), characterized in that, include: The first transmission rod (1) is connected to the input end of the electric booster (3); The second transmission rod (2) is located on the side of the first transmission rod (1) and is parallel to the axis of the first transmission rod (1); as well as Two transmission gears (5) are arranged alternately and are connected by a bridge gear (6). The two transmission gears (5) are respectively connected to the end of the second transmission rod (2) and the output end of the electric booster (3) so that the first transmission rod (1) and the second transmission rod (2) rotate synchronously.

2. The EPS-assisted connection structure according to claim 1, characterized in that, The second transmission rod (2) is fitted with a protective shell (7), and the protective shell (7) is fastened with a cover plate (701) to form a closed protective cavity. The bridge gear (6) and the two transmission gears (5) are all located in the protective cavity.

3. The EPS-assisted connection structure according to claim 2, characterized in that, The protective cavity is provided with a second bearing (501) corresponding to the bridge gear (6) and the two transmission gears (5) one by one. The shaft of the bridge gear (6) and the shaft of the transmission gear (5) are located in the corresponding second bearing (501).

4. The EPS-assisted connection structure according to claim 1, characterized in that, The first transmission rod (1) is fitted with a mounting plate (8), and the mounting plate (8) has a plurality of mounting holes for bolts to pass through.

5. The EPS-assisted connection structure according to claim 4, characterized in that, A limiting sleeve (4) is fixedly provided on one side of the mounting plate (8). The limiting sleeve (4) has a through hole coaxial with the second transmission rod (2), and the second transmission rod (2) passes through the through hole.

6. The EPS-assisted connection structure according to claim 5, characterized in that, The through hole is provided with a first bearing (401), and the second transmission rod (2) is located in the inner ring of the first bearing (401).

7. The EPS-assisted connection structure according to claim 1, characterized in that, It also includes a connecting rod (9), both ends of which are rotatably provided with front rotating arms (901), one of which is connected to the second transmission rod (2).

8. The EPS-assisted connection structure according to claim 7, characterized in that, Both the end of the first transmission rod (1) and the end of the second transmission rod (2) are provided with a threaded section (102) and a receiving platform (103), wherein one of the front swing arms (901) is located between the threaded section (102) and the receiving platform (103) of the second transmission rod (2).

9. The EPS-assisted connection structure according to claim 8, characterized in that, A limiting groove (101) is provided between the threaded section (102) and the receiving platform (103).

10. A tricycle, including a steering frame (10), characterized in that, It also includes the EPS power-assisted connection structure according to any one of claims 1-9, wherein the steering frame (10) is mounted on the end of the first transmission rod (1).

Images