Anti-rollover mechanism of tricycle

Abstract

The utility model belongs to the technical field of tricycles and discloses an anti-rollover mechanism of a tricycle, which comprises a rear frame and a front frame, two rear wheels are symmetrically arranged on the rear frame, a riding seat and a front wheel are arranged on the front frame, the rear frame comprises a cross beam, the front frame comprises a longitudinal beam, the longitudinal beam is rotatably connected to the cross beam, and the cross beam is connected with the front wheel. The rotating axis of the longitudinal beam is perpendicular to the cross beam; an elastic assembly and a locking assembly are arranged between the longitudinal beam and the cross beam, when the locking assembly is opened, the longitudinal beam can rotate relative to the cross beam, and when the locking assembly is closed, the longitudinal beam is fixed relative to the cross beam. The locking assembly is opened, the rotation freedom degree of the longitudinal beam is released, a person on the riding seat can incline in the turning direction relative to the rear frame along with the front frame, and rollover of the tricycle is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of tricycle technology, specifically a tricycle anti-tipping mechanism. Background Technology

[0002] In today's transportation sector, tricycles, as a flexible, convenient, and economical mode of transport, play a vital role in short-distance urban transport, goods delivery, and passenger transport in some areas. Whether used by individual merchants for daily goods handling and sales, by logistics companies for last-mile delivery, or even for sightseeing transport within tourist attractions, tricycles have secured their place due to their unique advantages. However, despite their many advantages, tricycles also face a significant problem during operation—they are prone to rollover accidents. Due to their structural characteristics, the layout of their three wheels makes their stability relatively weak, especially when turning. If the turning speed is too fast or the turning radius is too small, the centrifugal force may exceed the vehicle's own stabilizing torque, leading to a rollover. Currently, although some measures to improve tricycle stability exist on the market, they still have shortcomings. Some tricycles increase their weight to improve stability, but this reduces maneuverability and increases purchase and operating costs. Therefore, we provide a tricycle anti-rollover mechanism to solve these problems. Utility Model Content

[0003] To address the problems mentioned in the background section, this utility model provides a tricycle anti-tipping mechanism.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tricycle anti-tipping mechanism, comprising a rear frame and a front frame, wherein two rear wheels are symmetrically arranged on the rear frame, and a riding seat and a front wheel are arranged on the front frame; the rear frame includes a crossbeam, and the front frame includes a longitudinal beam; the longitudinal beam is rotatably connected to the crossbeam, and the rotation axis of the longitudinal beam is perpendicular to the crossbeam; an elastic component and a locking component are provided between the longitudinal beam and the crossbeam; when the locking component is open, the longitudinal beam can rotate relative to the crossbeam; when the locking component is closed, the longitudinal beam is fixed relative to the crossbeam.

[0005] Preferably, the locking assembly includes a locking plate fixedly mounted on the rear frame and a locking pin disposed on the longitudinal beam. The locking plate is provided with a locking hole for the locking pin to be inserted. The locking pin can extend or retract. When the locking pin extends and is inserted into the locking hole, the longitudinal beam is fixed relative to the crossbeam. When the locking pin retracts and leaves the locking hole, the longitudinal beam can rotate relative to the crossbeam.

[0006] Preferably, the elastic component includes two elastic elements, which are located on the left and right sides of the rear end of the longitudinal beam and are symmetrically arranged; one end of each elastic element is hinged to the rear frame and the other end is hinged to the rear end of the longitudinal beam; the two elastic elements are used to force the longitudinal beam to a position where the locking component can be closed.

[0007] Preferably, an end plate is fixedly provided at the rear end of the longitudinal beam, and a cross arm is provided at the lower end of the end plate, with the elastic element hinged to the end of the cross arm.

[0008] Preferably, the elastic element is a shock absorber or an air spring.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] 1. By incorporating a flexible and locking mechanism between the rear and front frames, the locking mechanism is activated during vehicle movement, especially when turning. This releases the longitudinal beam's rotational freedom, allowing the rider, along with the front frame, to lean relative to the rear frame in the turning direction, preventing the tricycle from tipping over. The flexible mechanism, when the locking mechanism is engaged, prevents rapid rotation of the front frame relative to the rear frame, which could cause the rider to fall. Furthermore, it automatically pulls the longitudinal beam back to the locked position after turning, while also providing alignment guidance for the locking pin to insert into the locking hole. The driver only needs to deactivate the locking mechanism when driving straight, eliminating the need for frequent manual adjustments. This simplified operation and high fault tolerance significantly improves practicality.

[0011] 2. Compared to traditional solutions that improve stability by adding counterweights, this mechanism does not significantly increase the vehicle's weight, perfectly preserving the tricycle's agility, fuel efficiency, and low cost. The symmetrical elastic components provide both restoring force and shock absorption, further optimizing ride smoothness.

[0012] 3. The locking assembly is simple and effective in design. Through the cooperation of the locking plate and the locking pin, the longitudinal beam and the cross beam can be firmly fixed together, ensuring that there is no relative rotation between the front frame and the rear frame when the vehicle is in normal driving or when it needs to maintain a stable state, thus providing a reliable mechanical guarantee for the stable driving of the vehicle. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the tricycle structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the rear frame and front frame of this utility model;

[0015] Figure 3 This is a first-view structural diagram of the flipping structure of this utility model;

[0016] Figure 4This is a first-view exploded view of the locking plate structure of the flipping structure of this utility model;

[0017] Figure 5 This utility model's flip structure is shown in a second-view structural diagram. Detailed Implementation

[0018] 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.

[0019] like Figure 1-5 As shown, this embodiment proposes a tricycle anti-rollover mechanism, including a rear frame 1 and a front frame 2. The rear frame 1 is symmetrically provided with two rear wheels 101, and the front frame 2 is provided with a riding seat 201 and a front wheel 202. The rear frame 1 includes a crossbeam 3, and the front frame 2 includes a longitudinal beam 4. The longitudinal beam 4 is rotatably connected to the crossbeam 3, and the rotation axis of the longitudinal beam 4 is perpendicular to the crossbeam 3. An elastic component and a locking component are provided between the longitudinal beam 4 and the crossbeam 3. When the locking component is open, the longitudinal beam 4 can rotate relative to the crossbeam 3. When the locking component is closed, the longitudinal beam 4 is fixed relative to the crossbeam 3.

[0020] In this embodiment, the locking assembly includes a locking plate 5 fixedly mounted on the rear frame 1 and a locking pin 6 disposed on the longitudinal beam 4. The locking plate 5 has a locking hole 51 for the locking pin 6 to be inserted. The locking pin 6 can extend or retract. When the locking pin 6 extends and is inserted into the locking hole 51, the longitudinal beam 4 is fixed relative to the crossbeam 3. When the locking pin 6 retracts and leaves the locking hole 51, the longitudinal beam 4 can rotate relative to the crossbeam 3. In this embodiment, controlling the extension or retraction of the locking pin 6 is existing technology. Specifically, it can be electromagnetically controlled. In this case, the tricycle only needs to be equipped with a battery, an electromagnetic actuator, and a control switch. The control switch controls the coil to be energized and de-energized, thereby controlling the extension or retraction. Alternatively, a shifter (existing technology for controlling bicycle gears) mounted on the handlebars can be used to control the extension or retraction of the locking pin 6.

[0021] The elastic component includes two elastic elements 7, which are symmetrically arranged on the left and right sides of the rear end of the longitudinal beam 4. One end of each elastic element 7 is hinged to the rear frame 1, and the other end is hinged to the rear end of the longitudinal beam 4. The two elastic elements 7 are used to force the longitudinal beam 4 to a position where the locking component can be closed. An end plate 8 is fixedly provided at the rear end of the longitudinal beam 4, and a cross arm 81 is provided at the lower end of the end plate 8. The elastic element 7 is hinged to the end of the cross arm 81. The elastic element 7 is a shock absorber or an air spring.

[0022] In this embodiment, by setting an elastic component and a locking component between the rear frame 1 and the front frame 2, the locking component is opened during vehicle operation, especially when turning. This allows the locking pin 6 to disengage from the locking hole 51, thereby releasing the rotational freedom of the longitudinal beam 4. The rider on the seat 201 can then lean relative to the rear frame 1 in the turning direction along with the front frame 2, thus preventing rollover caused by the centrifugal force exceeding the vehicle's stabilizing torque due to turning. The elastic component, on the one hand, prevents the front frame 2 from rotating rapidly relative to the rear frame 1 after the locking component is opened, thus preventing the rider from falling off; on the other hand, it automatically pulls the longitudinal beam 4 back to the locked position after turning, while providing alignment guidance for the locking pin 6 to insert into the locking hole 51. The driver only needs to close the locking component when driving straight, eliminating the need for frequent manual adjustments. This simplifies the operation process, increases the fault tolerance, and significantly improves practicality.

[0023] Compared to traditional solutions that improve stability by adding counterweights, this embodiment does not significantly increase the vehicle's weight, perfectly preserving the tricycle's flexibility, fuel efficiency, and low cost. The symmetrical elastic components provide both restoring force and shock absorption, further optimizing ride smoothness. The locking components are simple yet effective; through the cooperation of the locking plate 5 and the locking pin 6, the longitudinal beam 4 and the cross beam 3 are securely fixed together, ensuring that the front frame 2 and the rear frame 1 do not rotate relative to each other during normal vehicle operation and when stability is required, providing reliable mechanical protection for stable vehicle operation.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Content not described in detail in this specification belongs to the prior art known to those skilled in the art.

[0025] 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 tricycle anti-tipping mechanism, comprising a rear frame and a front frame, wherein two rear wheels are symmetrically arranged on the rear frame, and a riding seat and a front wheel are arranged on the front frame, characterized in that, The rear frame includes a crossbeam, and the front frame includes a longitudinal beam. The longitudinal beam is rotatably connected to the crossbeam, and the axis of rotation of the longitudinal beam is perpendicular to the crossbeam. An elastic component and a locking component are provided between the longitudinal beam and the crossbeam. When the locking component is open, the longitudinal beam can rotate relative to the crossbeam. When the locking component is closed, the longitudinal beam is fixed relative to the crossbeam.

2. The tricycle anti-tipping mechanism according to claim 1, characterized in that: The locking assembly includes a locking plate fixedly mounted on the rear frame and a locking pin disposed on the longitudinal beam. The locking plate has a locking hole for the locking pin to be inserted. The locking pin can extend or retract. When the locking pin extends and is inserted into the locking hole, the longitudinal beam is fixed relative to the crossbeam. When the locking pin retracts and leaves the locking hole, the longitudinal beam can rotate relative to the crossbeam.

3. The tricycle anti-tipping mechanism according to claim 1, characterized in that: The elastic component includes two elastic elements, which are located on the left and right sides of the rear end of the longitudinal beam and are symmetrically arranged. One end of each elastic element is hinged to the rear frame and the other end is hinged to the rear end of the longitudinal beam. The two elastic elements are used to force the longitudinal beam to a position where the locking component can be closed.

4. The tricycle anti-tipping mechanism according to claim 3, characterized in that: An end plate is fixedly provided at the rear end of the longitudinal beam, and a cross arm is provided at the lower end of the end plate. The elastic element is hinged to the end of the cross arm.

5. A tricycle anti-tipping mechanism according to claim 3, characterized in that: The elastic element is a shock absorber or an air spring.

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