Novel front suspension and rear wheel independent suspension tricycle

Abstract

The embodiment of the utility model provides a novel tricycle with a front suspension and a rear wheel independent suspension, and relates to the technical field of suspensions. The novel front suspension comprises a front fork, a front plate spring, a first damping part and a second damping part, the middle of the front plate spring is connected with the front fork, and the first damping part and the second damping part are connected to the two ends of the front plate spring respectively and used for being connected with the two sides of a frame respectively. When a wheel installed on the novel front suspension encounters a protruding road surface, the front fork drives the middle of the front plate spring to move upwards, the front plate spring elastically deforms, the buffering effect is achieved, a frame is prevented from bouncing, and when the wheel installed on the novel front suspension encounters a concave road surface, due to the first damping piece and the second damping piece at the two ends of the front plate spring, the front plate spring can be supported and damped, and the damping effect is good. And the first damping piece and the second damping piece are connected to the two sides of the frame, so that the stress of the whole novel front suspension can be dispersed to the two sides of the frame, the gravity center of the tricycle is lowered, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of suspension, in particular to a novel tricycle with front suspension and rear wheel independent suspension. Background Art

[0002] A tricycle is a means of transportation modified from a bicycle. Specifically, it can be understood as an improvement on the large frame of a two-wheeled bicycle by adding a wheel on the side, turning a two-wheeled vehicle into a three-wheeled vehicle.

[0003] In the prior art, most of the tricycles are improved on the original agricultural machinery design base, and agricultural machinery mainly focuses on the vehicle's load-bearing and durability. For example, the front suspension of the tricycle adopts the same two shock absorber structure as a fuel motorcycle, and the safety and comfort are not high. Utility Model Content

[0004] The utility model provides a novel tricycle with front suspension and rear wheel independent suspension, which can improve the safety and comfort of the tricycle.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the utility model provides a novel front suspension, which is applicable to a tricycle, and the novel front suspension comprises:

[0007] Front fork;

[0008] A front leaf spring, the middle portion of which is connected to the front fork;

[0009] a first vibration damper and a second vibration damper, wherein the first vibration damper and the second vibration damper are respectively connected to two ends of the front leaf spring, and the first vibration damper and the second vibration damper are respectively used to connect two sides of the vehicle frame;

[0010] The first vibration damping member comprises a connecting member, an elastic member and a sleeve, one end of the sleeve is connected to the frame, the elastic member is used to elastically abut the sleeve and the end of the front leaf spring at the same time, the connecting member has a first end and a second end, the first end is used to be connected to one side of the frame, and the second end is movably connected to the end of the front leaf spring;

[0011] Wherein, the second end portion is used to abut against the end portion of the front leaf spring when the front leaf spring is away from the sleeve.

[0012] In an optional embodiment, the connecting member is a rope-like structure, or the connecting member is a rigid rod-like structure.

[0013] In an optional embodiment, the elastic member is a spring, the spring is sleeved on the outside of the connecting member, and the connecting member is inserted into the sleeve.

[0014] In an optional embodiment, the new front suspension also includes a first control member and a second control member, the first control member is a plate-like structure, the first control member has a first connecting portion and a second connecting portion, the first connecting portion is connected to the front fork, and the second connecting portion is used to be rotatably connected to the frame, the second control member is a rod-like structure, one end of the second control member is connected to the front fork, and the other end of the second control member is used to be rotatably connected to the frame.

[0015] In an optional embodiment, heights at both ends of the front leaf spring are smaller than a height in the middle of the front leaf spring.

[0016] In a second aspect, the utility model provides a rear-wheel independent suspension tricycle, comprising a frame, an independent rear suspension, a front wheel, a rear wheel and the new front suspension described in any one of the aforementioned embodiments, wherein the new front suspension and the independent rear suspension are both mounted on the frame, the front wheel is mounted on the new front suspension, and the rear wheel is mounted on the independent rear suspension.

[0017] In an optional embodiment, the independent rear suspension includes an oblique arm, a rear axle fixing seat, a tension spring and a rear leaf spring, the oblique arm is rotatably connected to the frame, and the oblique arm is connected to the rear axle fixing seat, the tension spring is connected to the rear axle fixing seat and the frame at the same time, one end of the rear leaf spring is connected to the frame, and the other end of the rear leaf spring is used to abut the rear axle fixing seat, and the rear wheel is mounted on the rear axle fixing seat.

[0018] In an optional embodiment, the middle portion of the rear leaf spring is used to abut the vehicle frame, and the height of the middle portion of the rear leaf spring is greater than the heights of both ends of the rear leaf spring.

[0019] In an optional embodiment, the frame includes a load-bearing plate frame, a mounting plate frame and two oblique beams, the mounting plate frame is obliquely mounted on the load-bearing plate frame, the two ends of each oblique beam are respectively connected to the mounting plate frame and the load-bearing plate frame, and each oblique beam is located on a side of the mounting plate frame close to the novel front suspension, the two oblique beams are distributed in parallel and spaced apart, the novel front suspension is simultaneously mounted on the mounting plate frame and the load-bearing plate frame, and the independent rear suspension is mounted on the load-bearing plate frame of the frame.

[0020] The beneficial effects of the novel front suspension and rear wheel independent suspension tricycle of the utility model embodiment include, for example:

[0021] The utility model provides a novel front suspension, which is suitable for a tricycle. The novel front suspension comprises a front fork, a front leaf spring, a first shock absorber and a second shock absorber. The middle part of the front leaf spring is connected to the front fork. The first shock absorber and the second shock absorber are respectively connected to the two ends of the front leaf spring. The first shock absorber and the second shock absorber are respectively used to connect the two sides of the frame. The first shock absorber comprises a connecting member, an elastic member and a sleeve. One end of the sleeve is connected to the frame. The elastic member is used to elastically abut the ends of the sleeve and the front leaf spring at the same time. The connecting member has a first end and a second end. The first end is used to connect to one side of the frame, and the second end is movably connected to the end of the front leaf spring; wherein the second end is used to abut the end of the front leaf spring when the front leaf spring is away from the sleeve. When the wheel installed on the new front suspension encounters a raised road surface, the front fork drives the middle part of the front leaf spring to move upward, and the front leaf spring elastically deforms to play a buffering role and prevent the frame from bouncing. At the same time, when the wheel installed on the new front suspension encounters a recessed road surface, the front fork drives the middle part of the front leaf spring to move downward, but due to the first and second shock absorbers at both ends of the front leaf spring, the front leaf spring can be supported and damped, which can improve the comfort of the tricycle. In addition, the first and second shock absorbers are connected on both sides of the frame, so that the force of the entire new front suspension can be dispersed on both sides of the frame, thereby lowering the center of gravity of the tricycle and improving safety.

[0022] The utility model provides a rear-wheel independent suspension tricycle, which comprises a frame, an independent rear suspension, a front wheel, a rear wheel and the above-mentioned novel front suspension. The novel front suspension and the independent rear suspension are both installed on the frame, the front wheel is installed on the novel front suspension, and the rear wheel is installed on the independent rear suspension. The rear-wheel independent suspension tricycle has all the functions of the above-mentioned novel front suspension. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of a partial structure of a rear wheel independent suspension tricycle provided in an embodiment of the utility model from a first perspective;

[0025] Figure 2 A schematic diagram of a partial structure of a rear wheel independent suspension tricycle provided in an embodiment of the utility model from a second viewing angle;

[0026] Figure 3 A schematic diagram of a novel front suspension provided in an embodiment of the utility model;

[0027] Figure 4 A first schematic diagram of a rear suspension provided in an embodiment of the utility model;

[0028] Figure 5 This is a second schematic diagram of a rear suspension provided in an embodiment of the present utility model.

[0029] Icons: 100-new front suspension; 110-front fork; 120-front leaf spring; 130-first shock absorber; 131-connecting piece; 132-elastic piece; 133-sleeve; 140-second shock absorber; 150-first control piece; 160-second control piece; 170-fixing piece; 180-front leaf spring fixing bolt; 190-connecting piece fixing screw; 200-independent rear suspension; 210-oblique arm; 220-rear axle fixing seat; 230-tension spring; 240-rear leaf spring; 250-rubber piece; 260-rear leaf spring connecting bolt; 270-tension spring bolt; 280-oblique arm connecting piece; 300-frame; 310-load-bearing plate frame; 320-mounting plate frame; 330-oblique beam; 340-rear frame. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.

[0034] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0035] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0036] With the progress of society, people have more and more means of transportation, upgrading from fuel cars to electric cars, fuel motorcycles to electric motorcycles, and bicycles to electric bicycles. They are faster, have more functions, and use more advanced technologies such as driverless cars and unmanned delivery trucks. At the same time, people also pay more attention to safety.

[0037] However, in the process of tricycle technology development, the technology of the tricycle itself has not been upgraded. Most of it was improved on the original agricultural machinery design base. Early agricultural machinery mainly focused on the vehicle's load-bearing capacity and durability, and did not pay much attention to safety and comfort. The designed tricycle parts were relatively simple.

[0038] The development of vehicle technology has made the application of vehicles more refined. It is no longer a multi-purpose machine as before. Manned vehicles only carry people and no longer consider carrying more cargo. Tricycles also need special mechanical structures to meet the travel needs of people at different age stages. With the aging of the population, the elderly also need suitable means of transportation. For the elderly, two-wheeled means of transportation are unstable, and four-wheeled means of transportation are large and inconvenient to drive. Tricycles are more suitable for the travel needs of the elderly in terms of operation and usage scenarios.

[0039] As mentioned in the background technology, a tricycle is a means of transportation modified from a bicycle. Specifically, it can be understood as an improvement on the basic frame of a two-wheeled bicycle by adding a wheel on the side, thus turning a two-wheeled vehicle into a three-wheeled vehicle.

[0040] In the prior art, most tricycles are improved on the original agricultural machinery design base. The main mechanical design of tricycles is: the front suspension adopts the same two shock absorber structure as fuel motorcycles, which has the disadvantage of high center of gravity of the vehicle chassis and small driver space; the rear suspension is a multi-leaf spring structure on both sides, which has the disadvantage of low rear axle space utilization. The frame of the tricycle adopts a non-load-bearing frame structure. The height of the vehicle is higher than that of a car, and the chassis height is also higher than that of a car. Although such a structure has a large load capacity, it is unstable and can easily overturn if the driver does not operate it properly.

[0041] In view of this, please refer to Figure 1-Figure 5 The novel front suspension 100 and the rear wheel independent suspension tricycle provided in the embodiment of the utility model can solve this problem, which will be described in detail below.

[0042] Please refer to Figure 1 and Figure 2 In an embodiment of the utility model, a rear-wheel independent suspension tricycle is provided, which comprises a frame 300, an independent rear suspension 200, a front wheel, a rear wheel and a novel front suspension 100. The novel front suspension 100 and the independent rear suspension 200 are both mounted on the frame 300, the front wheel is mounted on the novel front suspension 100, and the rear wheel is mounted on the independent rear suspension 200. The rear-wheel independent suspension tricycle has good safety and comfort.

[0043] It should be noted that the rear-wheel independent suspension tricycle can be understood as a type of tricycle. At the same time, it is easy to understand that the "rear-wheel independent suspension" in the name of the "rear-wheel independent suspension tricycle" mentioned here can be understood as the rear wheels of the rear-wheel independent suspension tricycle are provided with an independent rear suspension 200.

[0044] in Figure 1 and Figure 2 It can be understood as the main structure of the rear-wheel independent suspension tricycle. The front wheels, rear wheels, braking system, rear wheel drive shaft and other structural parts are not shown. The structure and principles in the prior art can be referred to and will not be repeated here.

[0045] It is easy to understand that there are two independent rear suspensions 200 , which are arranged at the rear of the vehicle frame 300 , and the novel front suspension 100 is located at the front of the vehicle frame 300 .

[0046] Specifically, the frame 300 includes a load-bearing frame 310, a mounting frame 320 and two oblique beams 330. The mounting frame 320 is obliquely mounted on the load-bearing frame 310. Both ends of each oblique beam 330 are respectively connected to the mounting frame 320 and the load-bearing frame 310, and each oblique beam 330 is located on a side of the mounting frame 320 close to the new front suspension 100. The two oblique beams 330 are distributed in parallel and at intervals. The new front suspension 100 is simultaneously mounted on the mounting frame 320 and the load-bearing frame 310, and the independent rear suspension 200 is mounted on the load-bearing frame 310 of the frame 300.

[0047] It is easy to understand that in this embodiment, the load-bearing plate frame 310 is a flat plate structure as a whole, rather than adopting the existing rear portion of the frame 300 raised design, so that the entire load-bearing plate frame 310 can bear weight, and thus the frame 300 in the embodiment can be understood as a full-load-bearing frame 300.

[0048] In addition, in the present embodiment, the two ends of each oblique beam 330 are respectively connected to the mounting plate frame 320 and the load-bearing plate frame 310, and each oblique beam 330 is located on a side of the mounting plate frame 320 close to the new front suspension 100. The two oblique beams 330 are distributed in parallel and spaced apart. The driving position at the front of the frame 300 no longer has an oblique beam 330. Instead, the oblique beam 330 is removed from the driving position and placed on a side of the mounting plate frame 320 close to the new front suspension 100, thereby increasing the driving position space and making it easier for drivers (such as the elderly) to get on and off the vehicle.

[0049] Please continue to refer to Figure 3 The novel front suspension 100 is suitable for a tricycle (for example, the rear-wheel independent suspension tricycle mentioned in this embodiment). The novel front suspension 100 includes a front fork 110, a front leaf spring 120, a first shock absorber 130 and a second shock absorber 140. The middle part of the front leaf spring 120 is connected to the front fork 110, the first shock absorber 130 and the second shock absorber 140 are respectively connected to the two ends of the front leaf spring 120, and the first shock absorber 130 and the second shock absorber 140 are respectively used to connect the two sides of the frame 300, that is, the first shock absorber 130 is connected to one side of the frame 300, and the second shock absorber 140 is used to connect the other side of the frame 300.

[0050] Specifically, in this embodiment, the novel front suspension 100 further includes a front leaf spring fixing bolt 180 , through which the middle portion of the front leaf spring 120 and the front fork 110 are connected.

[0051] When the wheel installed on the novel front suspension 100 encounters a raised road surface, the front fork 110 drives the middle part of the front leaf spring 120 to move upward, and the front leaf spring 120 elastically deforms to play a buffering role to prevent the frame 300 from bouncing up. At the same time, when the wheel installed on the novel front suspension 100 encounters a recessed road surface, the front fork 110 drives the middle part of the front leaf spring 120 to move downward, but due to the first shock absorber 130 and the second shock absorber 140 at both ends of the front leaf spring 120, the front leaf spring 120 can be supported and damped, thereby improving the comfort of the rear-wheel independent suspension tricycle. In addition, the first shock absorber 130 and the second shock absorber 140 are connected to both sides of the frame 300, so that the force of the entire novel front suspension 100 can be dispersed on both sides of the frame 300, thereby lowering the center of gravity of the rear-wheel independent suspension tricycle and improving safety.

[0052] It should be noted that, in other embodiments, the novel front suspension 100 may also be applicable to other types of tricycles, such as a tricycle with a non-independent suspension for the rear wheels.

[0053] It should be noted that the two sides of the frame 300 mentioned here can be understood as the two sides of the frame 300 in the direction from the front of the frame 300 (where the front suspension is set) to the rear of the frame 300 (the position between the two independent rear suspensions 200).

[0054] Among them, the heights of both ends of the front leaf spring 120 are smaller than the middle height of the front leaf spring 120. At the same time, the number of front leaf springs 120 can be one, that is, one leaf spring. In other embodiments, the number of front leaf springs 120 can also be multiple, forming a stacked multi-layer leaf spring structure.

[0055] In this embodiment, the structures and principles of the first vibration damper 130 and the second vibration damper 140 are the same. The structure, principle and installation method of the first vibration damper 130 are introduced in detail here, and the structure, principle and installation method of the second vibration damper 140 can refer to the first vibration damper 130 and will not be repeated here.

[0056] The first shock absorber 130 includes a connecting member 131, an elastic member 132 and a sleeve 133, one end of the sleeve 133 is connected to the frame 300, the elastic member 132 is used to elastically abut the sleeve 133 and the end of the front leaf spring 120 at the same time, the connecting member 131 has a first end and a second end, the first end is used to be connected to one side of the frame 300, and the second end is movably connected to the end of the front leaf spring 120, wherein the second end is used to abut the end of the front leaf spring 120 when the front leaf spring 120 is away from the sleeve 133.

[0057] In this embodiment, the connecting member 131 is a rope-like structure, such as a steel wire rope. Of course, in other embodiments, the connecting member 131 may also be a rigid rod-like structure, such as a steel pipe or steel bar.

[0058] The elastic member 132 is a spring, which is sleeved on the outside of the connecting member 131 , and the connecting member 131 is inserted into the sleeve 133 .

[0059] It should be noted that, in this embodiment, the front suspension also includes a fixing member 170 and a connecting member fixing screw 190. The fixing member 170 is arranged at the front end of the load-bearing plate frame 310 of the frame 300. The lower end of the connecting member 131 is connected to the fixing member 170, and the upper end of the connecting member 131 passes through the end of the front leaf spring 120 and is connected with a connecting member fixing screw 190, so as to prevent the upper end of the connecting member 131 from detaching from the front leaf spring 120.

[0060] In addition, the novel front suspension 100 further includes a first control member 150 and a second control member 160. The first control member 150 is a plate-like structure. The first control member 150 has a first connection portion and a second connection portion. The first connection portion is connected to the front fork 110, and the second connection portion is used to be rotatably connected to the frame 300. The second control member 160 is a rod-like structure. One end of the second control member 160 is connected to the front fork 110, and the other end of the second control member 160 is used to be rotatably connected to the frame 300.

[0061] There are two second control members 160 , which are distributed at an angle. The first control member 150 is similar to a triangular plate structure.

[0062] The first control member 150 and the second control member 160 can constrain the movement trajectory of the front fork 110. In this embodiment, under the constraints of the first control member 150 and the second control member 160, the movement trajectory of the front fork 110 can be understood as obliquely upward and downward.

[0063] It is easy to understand that in the novel front suspension 100 , the front fork 110 is equivalent to a supporting point. Since the weight is on the frame 300 , the weight force of the frame 300 is equivalent to being distributed at both ends of the front leaf spring 120 through the first shock absorber 140 and the second shock absorber 140 .

[0064] When the wheel installed on the new front suspension 100 encounters a raised road surface, the front fork 110 drives the middle part of the front leaf spring 120 to move upward, and the front leaf spring 120 elastically deforms to play a buffering role and prevent the frame 300 from bouncing up. At the same time, when the wheel installed on the new front suspension 100 encounters a recessed road surface, the front fork 110 drives the middle part of the front leaf spring 120 to move downward, but due to the first shock absorber 130 and the second shock absorber 140 at both ends of the front leaf spring 120, the front leaf spring 120 can be supported and damped. At the same time, the elastic member 132 is compressed to elastically abut the two ends of the front leaf spring 120 to achieve elastic support for the front leaf spring 120, which can improve the comfort of the rear wheel independent suspension tricycle. In addition, the first shock absorber 130 and the second shock absorber 140 are connected to both sides of the frame 300, so that the force of the entire new front suspension 100 can be dispersed on both sides of the frame 300, thereby lowering the center of gravity of the rear wheel independent suspension tricycle and improving safety.

[0065] The novel front suspension 100 is an independent suspension, and its principle can also be understood as the principle of a commonly used bamboo pole, with a support in the middle and ropes at both ends of the bamboo pole to carry objects and play a vibration reduction role.

[0066] Please continue to refer to Figure 5 In this embodiment, the independent rear suspension 200 includes an oblique arm 210, a rear axle fixing seat 220, a tension spring 230 and a rear leaf spring 240, wherein the principle of the oblique arm 210 adopted by the independent rear suspension 200 can refer to the oblique arm 210 structure of the existing single oblique arm 210 type independent suspension, and the principle of the single oblique arm 210 type independent suspension is not repeated here.

[0067] Of course, the independent rear suspension 200 in this embodiment can also be understood as a single inclined arm 210 type independent suspension.

[0068] Specifically, the inclined arm 210 is rotatably connected to the frame 300, and the inclined arm 210 is connected to the rear axle fixing seat 220, the tension spring 230 is connected to the rear axle fixing seat 220 and the frame 300 at the same time, one end of the rear leaf spring 240 is connected to the frame 300, and the other end of the rear leaf spring 240 is used to abut the rear axle fixing seat 220, and the rear wheel is installed on the rear axle fixing seat 220.

[0069] Since the independent rear suspension 200 adopts the principle of the single inclined arm 210 independent suspension, the inclined arm 210 can increase the force surface of the rear wheel during the rotation of the frame 300, and at the same time, the two rear wheels can be in an eight-shaped shape, making the steering of the rear-wheel independent suspension three-wheeler more stable and avoiding roll. In conjunction with the frame 300, the overall strength of the entire rear-wheel independent suspension three-wheeler is increased.

[0070] In addition, the number of the rear leaf spring 240 may be one, that is, one leaf spring. In other embodiments, the number of the rear leaf spring 240 may be multiple, forming a stacked multi-layer leaf spring structure.

[0071] At the same time, in this embodiment, the rear leaf spring 240 is inclined relative to the central axis A of the frame 300, leaving a certain amount of space for the rear wheel, thereby increasing the available space for the rear wheel.

[0072] Among them, the middle part of the rear leaf spring 240 is used to abut the frame 300, and the middle part of the rear leaf spring 240 can be understood as a supporting point. When the rear wheel encounters a raised road surface, the end of the rear leaf spring 240 abuts the rear axle fixing seat 220, and the rear leaf spring 240 undergoes elastic deformation to play a buffering role, ensuring that the frame 300 does not bounce up. The height of the middle part of the rear leaf spring 240 is greater than the height of the two ends of the rear leaf spring 240. It should be noted that, specifically, the independent rear suspension 200 also includes a rubber part 250, and the rubber part 250 is arranged in the middle position of the rear leaf spring 240 of the independent rear suspension 200.

[0073] The vehicle frame 300 also includes two spaced-apart rear frames 340, which are connected to the load-bearing plate frame 310. The two rear frames 340 correspond to the two independent rear suspensions 200 one by one. Meanwhile, the rubber member 250 can also be connected to the rear frames 340. It should be noted that the rubber member 250 can be understood as a supporting point. When the rear wheel encounters a raised road surface, the end of the rear leaf spring 240 abuts against the rear axle fixing seat 220, and the rear leaf spring 240 undergoes elastic deformation to play a buffering role, thereby ensuring that the vehicle frame 300 will not bounce up. When the rear wheel reaches a recessed road surface, the tension spring 230 is stretched by the rear axle fixing seat 220, thereby generating a pulling force on the rear axle fixing seat 220.

[0074] In addition, it should be noted that the independent rear suspension 200 also includes a rear leaf spring connecting bolt 260, a tension spring bolt 270 and an oblique arm connecting member 280. The rear leaf spring connecting bolt 260 passes through one end of the rear leaf spring 240 and is connected to the bearing plate frame 310. The tension spring bolt 270 is connected to the tension spring 230 and the rear frame 340 at the same time. The oblique arm connecting member 280 is arranged on the bearing plate frame 310, and the oblique arm 210 and the bearing plate frame 310 are rotatably connected.

[0075] In summary, the novel front suspension 100 includes a front fork 110, a front leaf spring 120, a first shock absorber 130 and a second shock absorber 140. The middle part of the front leaf spring 120 is connected to the front fork 110, the first shock absorber 130 and the second shock absorber 140 are respectively connected to the two ends of the front leaf spring 120, and the first shock absorber 130 and the second shock absorber 140 are respectively used to connect the two sides of the frame 300.

[0076] When the wheel installed on the novel front suspension 100 encounters a raised road surface, the front fork 110 drives the middle part of the front leaf spring 120 to move upward, and the front leaf spring 120 elastically deforms to play a buffering role to prevent the frame 300 from bouncing up. At the same time, when the wheel installed on the novel front suspension 100 encounters a recessed road surface, the front fork 110 drives the middle part of the front leaf spring 120 to move downward, but due to the first shock absorber 130 and the second shock absorber 140 at both ends of the front leaf spring 120, the front leaf spring 120 can be supported and damped, thereby improving the comfort of the rear-wheel independent suspension tricycle. In addition, the first shock absorber 130 and the second shock absorber 140 are connected to both sides of the frame 300, so that the force of the entire novel front suspension 100 can be dispersed on both sides of the frame 300, thereby lowering the center of gravity of the rear-wheel independent suspension tricycle and improving safety.

[0077] The rear-wheel independent suspension tricycle comprises a frame 300, an independent rear suspension 200, a front wheel, a rear wheel and the above-mentioned novel front suspension 100. The novel front suspension 100 and the independent rear suspension 200 are both mounted on the frame 300, the front wheel is mounted on the novel front suspension 100, and the rear wheel is mounted on the independent rear suspension 200. The rear-wheel independent suspension tricycle has all the functions of the above-mentioned novel front suspension 100.

[0078] The rear wheel independent suspension tricycle of the utility model adopts a brand new design and structure from design to mechanical structure, from the new front suspension 100 to the independent rear suspension 200 to the entire frame 300, which improves the safety of the vehicle, large space and more comfort. It provides a safe, convenient and comfortable travel tool for the elderly, and the front and rear independent suspensions and the full load-bearing frame 300 are simple in structure, safe and reliable.

[0079] In addition, the front and rear wheels of the rear-wheel independent suspension tricycle are designed with independent suspension, the frame 300 has more space for utilization, and can achieve a full-load-bearing frame 300 structure, which can reduce the vehicle's own weight while carrying more load and is safer.

[0080] At the same time, the safety of the rear wheel independent suspension tricycle is improved. At the same time, the stress points of the frame 300 at the new front suspension 100 are dispersed to both sides of the frame 300, which ensures the structural strength of the vehicle and reduces the center of gravity of the vehicle. In addition, the internal space of the front cab is increased to facilitate the elderly to get on and off the vehicle. The independent rear suspension 200 design increases the available space of the rear wheel and also reduces the center of gravity of the rear wheel independent suspension tricycle. The unique figure eight design of the rear wheel improves the vehicle's ability to resist rollover.

[0081] In addition, it should be noted that the installation method of the front leaf spring 120 of the utility model is to fix it in the middle, and the two ends are fixed to the frame 300 by soft connections (wire ropes), while the utility model adopts the principle of a shoulder pole and is applied to a rear wheel independent suspension tricycle as a suspension, and the force action method is different from the prior art. It can be pulled down to the middle part by the wire ropes on both sides, so that the force point of the rear wheel independent suspension tricycle is lower.

[0082] At the same time, the rear leaf spring 240 is connected at only one end. The advantages of this installation method are that the installation occupies a small space and requires fewer installation connectors 131. At the same time, the vehicle (i.e., a rear-wheel independent suspension tricycle) can obtain a greater elastic shock absorption effect. Most existing vehicles use coil springs or shock absorbers on the rear axle. Since the compression stroke of the coil spring is related to the number of its own spring coils, it can only compress 1\3 of its own height, and the remaining 1\2 of the height occupies the vehicle space.

[0083] At the same time, since the frame 300 in this embodiment includes a load-bearing plate frame 310, a mounting plate frame 320 and two oblique beams 330, the mounting plate frame 320 is obliquely installed on the load-bearing plate frame 310, and the two ends of each oblique beam 330 are respectively connected to the mounting plate frame 320 and the load-bearing plate frame 310, and each oblique beam 330 is located on a side of the mounting plate frame 320 close to the new front suspension 100, and the two oblique beams 330 are distributed in parallel and spaced apart. The new front suspension 100 is simultaneously installed on the mounting plate frame 320 and the load-bearing plate frame 310, and the entire new front suspension 100 is located on a side of the mounting plate frame 320 away from the rear suspension. At the same time, the oblique beam 330 is located on a side of the mounting plate frame 320 close to the new front suspension 100, so that it is convenient to completely wrap and seal the front part of the frame 300 through the outer shell, and the front part of the frame 300 can be completely sealed, which can block the wind and keep warm, while the existing vehicle front wheel structure cannot be completely sealed.

[0084] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A novel front suspension, suitable for a tricycle, characterized in that: The novel front suspension comprises: Front fork (110); A front leaf spring (120), wherein a middle portion of the front leaf spring (120) is connected to the front fork (110); A first vibration damper (130) and a second vibration damper (140), wherein the first vibration damper (130) and the second vibration damper (140) are respectively connected to two ends of the front leaf spring (120), and the first vibration damper (130) and the second vibration damper (140) are respectively used to connect two sides of the vehicle frame (300); The first vibration damping member (130) comprises a connecting member (131), an elastic member (132) and a sleeve (133); one end of the sleeve (133) is connected to the vehicle frame (300); the elastic member (132) is used to elastically abut the sleeve (133) and the end of the front leaf spring (120) at the same time; the connecting member (131) has a first end and a second end; the first end is used to be connected to one side of the vehicle frame (300); and the second end is movably connected to the end of the front leaf spring (120); The second end portion is used to abut against the end portion of the front leaf spring (120) when the front leaf spring (120) is away from the sleeve (133).

2. The novel front suspension according to claim 1 is characterized in that: The connecting member (131) is a rope-shaped structure, or the connecting member (131) is a rigid rod-shaped structure.

3. The novel front suspension according to claim 2 is characterized in that: The elastic member (132) is a spring, the spring is sleeved on the outside of the connecting member (131), and the connecting member (131) is inserted into the sleeve (133).

4. The novel front suspension according to claim 1 is characterized in that: The novel front suspension further comprises a first control member (150) and a second control member (160), wherein the first control member (150) is a plate-shaped structure, the first control member (150) comprises a first connecting portion and a second connecting portion, the first connecting portion is connected to the front fork (110), and the second connecting portion is used to be rotatably connected to the frame (300), and the second control member (160) is a rod-shaped structure, one end of the second control member (160) is connected to the front fork (110), and the other end of the second control member (160) is used to be rotatably connected to the frame (300).

5. The novel front suspension according to claim 1 is characterized in that: The heights of both ends of the front leaf spring (120) are smaller than the height of the middle portion of the front leaf spring (120).

6. A rear wheel independent suspension tricycle, characterized in that: The vehicle comprises a vehicle frame (300), an independent rear suspension (200), a front wheel, a rear wheel, and the novel front suspension according to any one of claims 1 to 5, wherein the novel front suspension and the independent rear suspension (200) are both mounted on the vehicle frame (300), the front wheel is mounted on the novel front suspension, and the rear wheel is mounted on the independent rear suspension (200).

7. The rear wheel independent suspension tricycle according to claim 6, characterized in that: The independent rear suspension (200) comprises an oblique arm (210), a rear axle fixing seat (220), a tension spring (230) and a rear leaf spring (240); the oblique arm (210) is rotatably connected to a vehicle frame (300), and the oblique arm (210) is connected to the rear axle fixing seat (220); the tension spring (230) is simultaneously connected to the rear axle fixing seat (220) and the vehicle frame (300); one end of the rear leaf spring (240) is connected to the vehicle frame (300), and the other end of the rear leaf spring (240) is used to abut against the rear axle fixing seat (220); and the rear wheel is mounted on the rear axle fixing seat (220).

8. The rear wheel independent suspension tricycle according to claim 7, characterized in that: The middle portion of the rear leaf spring (240) is used to abut against the vehicle frame (300), and the height of the middle portion of the rear leaf spring (240) is greater than the heights of the two end portions of the rear leaf spring (240).

9. The rear wheel independent suspension tricycle according to claim 6, characterized in that: The vehicle frame (300) comprises a load-bearing frame (310), a mounting frame (320) and two oblique beams (330); the mounting frame (320) is obliquely mounted on the load-bearing frame (310); two ends of each oblique beam (330) are respectively connected to the mounting frame (320) and the load-bearing frame (310); each oblique beam (330) is located on a side of the mounting frame (320) close to the novel front suspension; two oblique beams (330) are arranged in parallel and at intervals; the novel front suspension is simultaneously mounted on the mounting frame (320) and the load-bearing frame (310); and the independent rear suspension (200) is mounted on the load-bearing frame (310) of the vehicle frame (300).

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