External swing mechanism and tricycle
By designing an external swing mechanism, the problems of complex structure and high cost of existing tricycles are solved, achieving the effects of simplified structure, reduced cost and improved stability, and is suitable for tricycles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MOFANG ZHIXING (SHANGHAI) POWER TECHNOLOGY CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-06-09
AI Technical Summary
The existing swaying mechanism of tricycles occupies internal space, has a complex structure, requires high manufacturing precision, is costly, and is complicated to maintain, affecting its flexibility and stability.
An external swing mechanism is adopted, which realizes relative swinging motion through the swing assembly between the front frame and the rear frame. It uses upper and lower linkage rods and rotating parts for connection, combined with buffer connectors and limit baffles to form a quadrilateral structure, which simplifies the structure and improves stability.
It achieves the left-right swaying effect of the tricycle, reduces manufacturing and maintenance costs, improves the vehicle's flexibility and stability, and does not take up interior space.
Smart Images
Figure CN224335758U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of vehicle technology, and relates to an external swing mechanism, and more particularly to an external swing mechanism and a tricycle. Background Technology
[0002] Tricycles are increasingly being used for commercial and family transportation due to their excellent practicality. While relatively stable at low speeds and in straight lines, they are prone to tipping over when turning, posing a safety hazard. Therefore, improving the flexibility and stability of tricycles has become a major focus for tricycle manufacturers.
[0003] Current tricycle frame swaying technologies (such as patents CN202211053052.6, CN201921355677.1, CN202222313264.5, and CN202222302134.1) mostly employ independent swaying mechanism modules, composed of rubber blocks and rotating shafts. The rotation of the shaft enables relative rotation between the front and rear frames, compressing the rubber blocks during this process. The rubber blocks serve as sway limiters and also provide some shock absorption during compression. However, these technologies have the following drawbacks:
[0004] 1. It exists as an independent module, encroaching on the interior space of the vehicle body;
[0005] 2. The overall structure is relatively complex and requires a certain level of manufacturing precision, resulting in high manufacturing costs;
[0006] 3. The presence of many specially processed sub-components increases the company's development costs;
[0007] 4. The overall mechanism has a high degree of integration, and some parts are special. If damaged, the repair is complicated.
[0008] In view of the above-mentioned shortcomings, the designer actively researched and innovated in order to create a new type of external swing mechanism and tricycle, which would make it more industrially valuable. Utility Model Content
[0009] To solve the above-mentioned technical problems, the purpose of this utility model is to provide an external swing mechanism and a tricycle.
[0010] To achieve the above objectives, the present invention adopts the following technical solution:
[0011] An external swing mechanism includes a front frame and a rear frame, wherein the front frame and the rear frame are connected by a swing assembly and the relative swinging reciprocating motion of the front and rear frames is realized by the swing assembly;
[0012] The swing assembly includes an upper linkage rod and a lower linkage rod. The upper side of the rear frame is connected to the upper linkage rod, which rotates synchronously with the upper rotating component, via an upper rotating component. The lower side of the rear frame is connected to the lower linkage rod, which rotates synchronously with the lower rotating component, via a lower rotating component. The lower linkage rod is connected to the front frame and moves synchronously with the front frame. Connecting components are connected between the two ends of the lower linkage rod and the upper linkage rod. The upper linkage rod and the lower linkage rod are connected by the connecting components and are set to swing synchronously with the coaxial upper and lower rotating components as the axis.
[0013] Preferably, in the external rocking mechanism, the upper rotating component includes an upper rotating shaft and an upper bearing, the lower rotating component includes a lower rotating shaft and a lower bearing, the upper and lower sides of the rear frame are respectively connected to the upper and lower rotating shafts, the upper and lower rotating shafts are opposite to each other and on the same axis, the upper linkage rod is connected to the upper rotating shaft through the upper bearing, and the lower linkage rod is connected to the lower rotating shaft through the lower bearing;
[0014] And / or,
[0015] The upper rotating component includes an upper rotating shaft and an upper bearing, and the lower rotating component includes a lower rotating shaft and a lower bearing. The upper bearing and the lower bearing are respectively connected to the upper and lower sides of the rear frame. The upper bearing and the lower bearing are opposite to each other and on the same axis. The upper rotating shaft is movably connected inside the upper bearing, and the upper linkage rod is connected to the upper rotating shaft. The lower rotating shaft is movably connected inside the lower bearing, and the lower linkage rod is connected to the lower rotating shaft.
[0016] Preferably, in the external rocking mechanism, the connecting member is a buffer connecting member, which includes a damper and a buffer spring. The upper and lower ends of the damper are respectively connected to the upper linkage rod and the lower linkage rod through locking accessories, and the buffer spring is fitted onto the damper.
[0017] Or it may be a supporting connecting rod.
[0018] Preferably, in the external swing mechanism, the upper linkage rod, the lower linkage rod, and the two connecting members form a quadrilateral structure.
[0019] Preferably, in the external swing mechanism, a limiting baffle for limiting the amplitude of the swing component is connected to the front frame.
[0020] Preferably, in the external swing mechanism, the height of the limiting baffle is lower than the bottom surface of the rear frame, and a swing gap is provided between the limiting baffle and the rear frame.
[0021] And / or,
[0022] The rear frame is connected to a limiting fixing plate that contacts the limiting baffle when swaying. The height of the limiting baffle is lower than that of the limiting fixing plate, and there is a swaying gap between the limiting fixing plate and the limiting baffle.
[0023] Preferably, in the external swing mechanism, the limiting baffle is welded to the front frame.
[0024] And / or,
[0025] The limit stop is connected to the front frame via a locking device.
[0026] A tricycle including the external rocking mechanism as described above.
[0027] By means of the above solution, this utility model has at least the following advantages:
[0028] 1. This utility model achieves the left-right swaying effect of a tricycle through a simple structure, effectively improving the problems of tricycles being prone to tipping over and lacking flexibility;
[0029] 2. This utility model reduces the manufacturing process of tiltable tricycles, and reduces research and development costs as well as subsequent manufacturing and inspection costs.
[0030] 3. This utility model, by being arranged on the outside of the frame, does not occupy the interior space of the vehicle and can be adapted to more tricycles.
[0031] 4. This utility model has a simple structure, is easy to install, and can optimize the production line and reduce production input.
[0032] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description
[0033] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0034] Figure 1 This is a schematic diagram of the structure of this utility model;
[0035] Figure 2 yes Figure 1 Rear view;
[0036] Figure 3 yes Figure 1 Enlarged view of a specific area;
[0037] Figure 4 This is a structural schematic diagram of a tricycle using an external swing mechanism according to this utility model. Detailed Implementation
[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0039] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0040] Example 1
[0041] like Figure 1 , Figure 2 and Figure 3 As shown, an external rocking mechanism can achieve rocking and improve the problem of tricycles being prone to tipping over. It includes a front frame 5 and a rear frame 6, which are connected by a rocking assembly 100, and the rocking assembly 100 enables relative rocking and reciprocating motion of the front and rear frames 5 and 6.
[0042] Furthermore, the swing assembly 100 includes an upper linkage rod 3 and a lower linkage rod 7. The upper side of the rear frame 6 is connected to the upper linkage rod 3, which rotates synchronously with the upper rotating component, via an upper rotating component. The lower side of the rear frame 6 is connected to the lower linkage rod 7, which rotates synchronously with the lower rotating component, via a lower rotating component. The lower linkage rod 7 is connected to the front frame 5 and moves synchronously with the front frame 5. Connecting components 4 are connected between the two ends of the lower linkage rod 7 and the upper linkage rod 3. The upper linkage rod 3 and the lower linkage rod 7 are connected by connecting components and use the upper and lower rotating components, which are coaxial, as the axis to achieve synchronous swinging.
[0043] Example 2
[0044] Based on Embodiment 1, the upper and lower linkage rods in the rocker assembly 100 adopt a rotation method, wherein the upper rotating component includes an upper rotating shaft 1 and an upper bearing, the lower rotating component includes a lower rotating shaft 2 and a lower bearing, the upper and lower sides of the rear frame 6 are respectively connected to the upper rotating shaft 1 and the lower rotating shaft 2, the upper rotating shaft 1 and the lower rotating shaft 2 are opposite to each other and on the same axis, the upper linkage rod 3 is connected to the upper rotating shaft 1 through the upper bearing, and the lower linkage rod 7 is connected to the lower rotating shaft 2 through the lower bearing.
[0045] In Example 2, the upper and lower linkage rods can be directly integrated with their respective bearings to achieve a high strength.
[0046] Example 3
[0047] Based on Embodiment 1, the upper and lower linkage rods in the rocker assembly 100 adopt another rotation method. The upper rotating component includes an upper rotating shaft 1 and an upper bearing, and the lower rotating component includes a lower rotating shaft 2 and a lower bearing. The upper and lower bearings of the rear frame 6 are respectively connected to the upper and lower sides. The upper and lower bearings are opposite to each other and on the same axis. The upper rotating shaft 1 is movably connected to the upper bearing. The upper linkage rod 3 is connected to the upper rotating shaft 1. The lower rotating shaft 2 is movably connected to the lower bearing. The lower linkage rod 7 is connected to the lower rotating shaft.
[0048] When the upper and lower linkage rods in the above embodiment 3 are connected to their respective rotating shafts, they need to be fixed by auxiliary fasteners, such as snap rings, nuts, end caps, etc.
[0049] The connecting component 4 can be a buffer connector, which includes a damper 41 and a buffer spring 42. The upper and lower ends of the damper 41 are respectively connected to the upper linkage rod 3 and the lower linkage rod 7 via locking accessories. The buffer spring 42 is fitted onto the damper 41. The damper and buffer spring described above are known devices in the art and are commercially available, so they will not be described in detail further. The damper generates elastic force when deformed; this force acts as a reaction force, ensuring a certain degree of cushioning during the tipping process, thus enhancing safety.
[0050] Alternatively, it can be a supporting connecting rod, which is rigidly connected to the upper and lower linkage rods, thus enabling the swinging of the upper and lower linkage rods. This invention uses the former—a buffer connecting piece—to provide a certain degree of buffering.
[0051] Example 4
[0052] Based on Embodiments 1 to 3, the swing amplitude of the front and rear frames is limited. The upper linkage rod 3, the lower linkage rod 7, and the two buffer members 4 form a quadrilateral structure. At the same time, a limiting baffle 8 for limiting the swing amplitude is connected to the front frame 5. The height of the limiting baffle 8 is lower than the bottom surface of the rear frame 6, and a swing gap is provided between the limiting baffle 8 and the rear frame 6. Meanwhile, the limiting baffle 8 extends toward the limiting fixing plate of the rear frame 6 and has an overlapping area with the limiting fixing plate of the rear frame 6, for contacting and limiting the movement of the limiting fixing plate of the rear frame 6.
[0053] Example 5
[0054] Based on Embodiments 1 to 3, the swing amplitude of the front and rear frames is limited. The upper linkage rod 3, the lower linkage rod 7, and the two buffer members 4 form a quadrilateral structure. At the same time, a limiting baffle 8 for limiting the swing amplitude is connected to the back of the front frame 5. The rear frame 6 is connected to a limiting fixing plate that contacts the limiting baffle 8 during swing. The height of the limiting baffle 8 is lower than that of the limiting fixing plate. A swing gap is provided between the limiting fixing plate and the limiting baffle 8. The limiting baffle 8 extends toward the limiting fixing plate and has an overlapping area with the limiting fixing plate. The limiting fixing plate is used to contact and limit the rear frame 6.
[0055] The aforementioned quadrilateral structure can be a parallelogram structure or a trapezoidal structure. This utility model adopts the principle of a parallelogram linkage mechanism, and optimizes and adjusts it based on this principle to improve the riding experience during the tilting process through the stability of the overall mechanism.
[0056] Furthermore, as long as the limiting baffle 8 forms contact with the bottom surface of the rear frame and / or the limiting fixing plate, a material-saving method can be adopted. The end of the front frame 5 is provided with limiting baffle 8, which are respectively connected to the left and right sides of the front frame 5. The amplitude of the swing can be limited by the limiting baffles on both sides. At the same time, those skilled in the art can limit the height of the swing distance according to the actual situation.
[0057] The limiting baffle 8 can also be a single piece of the same length as the front frame or slightly shorter; these are combinations that can be made by those skilled in the art according to actual needs.
[0058] Furthermore, the limiting baffle 8 is welded to the front frame 5. Welding improves the robustness of the limiting baffle and the front frame, ensuring that there will be no loosening that would affect the amplitude of swaying or the overall performance upon contact.
[0059] Alternatively, it can be secured using a locking device, depending on the actual needs of those skilled in the art, and will not be elaborated further.
[0060] like Figure 4As shown, the external swing mechanism of this utility model can be applied to tricycles.
[0061] The working principle of this utility model is as follows:
[0062] In actual use, when the driver wants to tilt the front frame, he only needs to apply a little force to tilt the front frame 5 to the side. This will cause the mounting point on the front frame to rotate back and forth around the lower rotating shaft 2 through the buffer connector, thereby stretching / compressing the damper.
[0063] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0064] In the description of this application, it should be noted that the terms "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0065] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or vertical, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0066] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" 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 application based on the specific circumstances.
[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. An external swing mechanism, comprising a front frame (5) and a rear frame (6), characterized in that: The front frame (5) and the rear frame (6) are connected by a swing assembly (100), and the relative swinging reciprocating motion of the front and rear frames (5, 6) is realized by the swing assembly (100); The swing assembly (100) includes an upper linkage rod (3) and a lower linkage rod (7). The upper side of the rear frame (6) is connected to the upper linkage rod (3) which rotates synchronously with the upper rotating member through an upper rotating member. The lower side of the rear frame (6) is connected to the lower linkage rod (7) which rotates synchronously with the lower rotating member through a lower rotating member. The lower linkage rod (7) is connected to the front frame (5) and moves synchronously with the front frame (5). Connecting members (4) are connected between the two ends of the lower linkage rod (7) and the upper linkage rod (3). The upper linkage rod (3) and the lower linkage rod (7) are connected by connecting members and are set to swing synchronously with the upper rotating member and the lower rotating member as the axis of the coaxial axis.
2. The external swing mechanism according to claim 1, characterized in that: The upper rotating component includes an upper rotating shaft (1) and an upper bearing, and the lower rotating component includes a lower rotating shaft (2) and a lower bearing. The upper rotating shaft (1) and the lower rotating shaft (2) are respectively connected to the upper and lower sides of the rear frame (6). The upper rotating shaft (1) and the lower rotating shaft (2) are opposite to each other and on the same axis. The upper linkage rod (3) is connected to the upper rotating shaft (1) through the upper bearing, and the lower linkage rod (7) is connected to the lower rotating shaft (2) through the lower bearing. And / or, The upper rotating component includes an upper rotating shaft (1) and an upper bearing, and the lower rotating component includes a lower rotating shaft (2) and a lower bearing. The upper and lower sides of the rear frame (6) are respectively connected to the upper bearing and the lower bearing. The upper bearing and the lower bearing are opposite to each other and on the same axis. The upper rotating shaft (1) is movably connected to the upper bearing. The upper linkage rod (3) is connected to the upper rotating shaft (1). The lower rotating shaft (2) is movably connected to the lower bearing. The lower linkage rod (7) is connected to the lower rotating shaft.
3. An external swing mechanism according to claim 1, characterized in that: The connector (4) is a buffer connector, which includes a damper (41) and a buffer spring (42). The upper and lower ends of the damper (41) are respectively connected to the upper linkage rod (3) and the lower linkage rod (7) through locking accessories. The buffer spring (42) is fitted on the damper (41). Or it may be a supporting connecting rod.
4. An external swing mechanism according to claim 1, characterized in that: The upper linkage rod (3), the lower linkage rod (7), and the two connecting parts (4) form a quadrilateral structure.
5. An external swing mechanism according to claim 1, characterized in that: The front frame (5) is connected to a limiting baffle (8) for limiting the amplitude of the sway assembly (100).
6. An external swing mechanism according to claim 5, characterized in that: The height of the limiting baffle (8) is lower than the bottom surface of the rear frame (6), and there is a swing gap between the limiting baffle (8) and the rear frame (6); And / or, The rear frame (6) is connected to a limiting fixing plate that contacts the limiting baffle (8) when swinging. The height of the limiting baffle (8) is lower than that of the limiting fixing plate, and there is a swing gap between the limiting fixing plate and the limiting baffle (8).
7. An external swing mechanism according to claim 6, characterized in that: The limiting baffle (8) is welded to the front frame (5). And / or, The limiting baffle (8) is connected to the front frame (5) by a locking fastener.
8. A tricycle comprising an external rocking mechanism according to any one of claims 1 to 7.