CN220743274U - Rocker arm type shock absorption structure for scooter and scooter - Google Patents

Abstract

The utility model relates to a rocker arm type shock absorption structure for a scooter and the scooter. The rocker arm type shock absorbing structure comprises a first connecting piece connected with a wheel shaft, a second connecting piece connected with a vehicle body and a variable-section plate spring. The variable-section leaf spring has a first end region connected to the first connecting member and a second end region opposite to the first end region connected to the second connecting member; the variable-section leaf spring is configured to vary in cross-sectional area from the first end region to the second end region. According to the utility model, the plate spring structure adopts a variable cross-section structure, is suitable for various stress conditions, has a simple overall structure, is easy to install, reduces the risk of damage at the joint, fully plays a role in damping under different stress conditions, and further improves the overall service life of the rocker arm type damping structure for the scooter.

Description

Rocker arm type shock absorption structure for scooter and scooter

Technical Field

The utility model relates to the technical field of shock absorption, in particular to a rocker arm type shock absorption structure for a scooter and the scooter.

Background

The damping device is a necessary functional structure of a vehicle, and the rocker arm damping structure has the advantages of low cost, simple maintenance and the like, and is widely applied to the fields including scooter and the like. The rocker arm damping structure generally comprises a rigid supporting structure and an elastic resetting mechanism, wherein two ends of the elastic resetting mechanism are respectively fixed on a wheel center shaft and a frame main body through the rigid supporting structure, when the height of a wheel changes, the elastic resetting mechanism deforms, and the relative distance between the wheel center shaft and the frame main body changes, so that the damping effect is achieved.

At present, part of scooter adopts the leaf spring as elastic return mechanism, because the leaf spring itself has certain rigidity, can satisfy two demands that support and deformation reset simultaneously, only need be fixed in wheel axis and frame main part with leaf spring head and tail end can reach preliminary shock attenuation effect. By adopting the plate spring as the damping element, the structure of the damping device can be simplified, thereby reducing the cost and simplifying the assembly steps. But the rigidity and the flexibility of different parts of the plate spring are different, when the downward pressure is applied to different positions on the pedal of the scooter, the direction and the size of the force of the frame main body acting on the plate spring are different, and the stress condition of the plate spring is different. Under partial conditions, the situation that the stress of the part position of the plate spring exceeds the elastic limit or the deformation is smaller and is difficult to play a role in damping is caused, and then the plate spring is lost or the damping effect of the damping device is poor, so that the service effect and the service life of the damping structure are influenced.

Disclosure of Invention

The utility model aims to provide a rocker arm type shock absorption structure for a scooter, which is applicable to different stress conditions.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a rocking arm formula shock-absorbing structure for scooter, the scooter includes automobile body, wheel and runs through the axletree at wheel center, a rocking arm formula shock-absorbing structure for scooter includes:

a first connecting member connected to the wheel shaft;

the second connecting piece is connected with the vehicle body;

a variable cross-section leaf spring having a first end region connected to the first connector and a second end region opposite the first end region connected to the second connector;

the variable-section leaf spring is configured to vary in cross-sectional area from the first end region to the second end region.

Optionally, the variable cross-section leaf spring further comprises a middle region between the first end region and the second end region;

the variable-section leaf spring is configured to increase in cross-sectional area from the first end region to the second end region;

or the variable-section leaf spring is configured such that the first end region and the second end region have the same cross-sectional area, and the cross-sectional area of the middle portion is smaller than the cross-sectional area of the first end region;

or the variable cross-section leaf spring is configured such that the first end region has the same cross-sectional area as the second end region, and the cross-sectional area of the middle portion is larger than the cross-sectional area of the first end region.

Optionally, the variable cross-section leaf spring is configured to have a constant thickness and a variable width from the first end region to the second end region;

or the variable cross-section leaf spring is configured to have a constant width and a constant thickness from the first end region to the second end region.

Optionally, the number of the first connecting piece and the variable-section plate spring is two;

the two first connecting pieces are respectively arranged on two sides of the wheel shaft, and each variable-section plate spring corresponds to one first connecting piece.

Optionally, the second connector has:

a connecting portion for connecting with the vehicle body;

and a balancing part providing two mounting positions for mounting the two variable-section leaf springs, the two mounting positions being on the same plane so that second end regions of the two variable-section leaf springs are on the same plane.

Optionally, the first end region of each of the variable-section leaf springs has a through hole to be fastened at the first connecting piece by a fastener;

the second end region of each of the variable-section plate springs has two through holes to be fastened at the corresponding mounting positions by fasteners.

Optionally, the connecting part is provided with two connecting lugs which are arranged in parallel at intervals and are perpendicular to the mounting positions, each connecting lug is provided with a mounting hole, and the two mounting holes of the two connecting lugs are oppositely arranged;

the second connecting piece further comprises a reinforcing part with an included angle with the balance part, and the two connecting lugs are connected with the reinforcing part.

Optionally, the rocker arm type shock absorbing structure for a scooter further comprises a protective cover assembly, wherein the protective cover assembly comprises a body, the body is of a rigid structure and is provided with a containing space for containing the variable-section plate spring, one end of the body is close to the first connecting piece and is provided with an opening, and the variable-section plate spring is arranged in the body and penetrates through the opening so as to extend out of the body.

Optionally, the protective cover assembly further comprises:

the first limiting piece is arranged in the accommodating space and is close to one end of the first connecting piece, and the variable-section plate spring penetrates through the first limiting piece; and/or

The second limiting part is positioned outside the accommodating space and connected with one end of the body, which is close to the second connecting part, and the variable-section plate spring penetrates through the second limiting part.

The utility model also provides a scooter, which comprises the rocker arm type shock absorption structure for the scooter.

According to the first aspect of the utility model, the first end region of the variable-section leaf spring is fixed to the wheel axle by the first connecting member, the second end region is connected to the vehicle body by the second connecting member, and the vehicle body is supported by the wheel axle and the variable-section leaf spring, in which case the supporting force of the variable-section leaf spring is particularly important. Because scooter structure is different, lead to the atress position difference of variable cross section leaf spring, and then lead to the atress condition difference of variable cross section leaf spring. The sectional area is increased only at the position where the stress of the variable-section plate spring is larger, the supporting force is ensured, and the supporting performance of the material is fully utilized, so that the material is saved. And, because the variable cross-section leaf spring only with first connecting piece and second connecting piece fixed connection, make overall structure simple, reduce the fastener and damage or loosen the structural loss that leads to, and easy installation.

Further, the variable cross-section leaf spring plays the function of supporting and deformation restoration simultaneously, when construction material rigidity is great, the supporting capacity is stronger, but is difficult to take place deformation, reduces middle part district sectional area, helps improving the ability that deformation restored, strengthens the shock attenuation effect. When the stress position of the variable-section plate spring is located in the middle area, the sectional area of the middle area is increased, the structure of the middle area is enhanced, damage is prevented, and the service life of the variable-section plate spring is prolonged. When the stress condition and the construction material of the variable-section plate spring are close to ideal conditions, the sectional area is increased gradually, so that the whole structure of the variable-section plate spring is close to an equal-stress structure, and the material is saved.

Further, the first ends of the two variable-section leaf springs are respectively connected to wheel axles on two sides of the wheel, and the second ends of the two variable-section leaf springs are respectively connected to the vehicle body, so that the two variable-section leaf springs deform synchronously and generate restoring force at the same time, thereby playing a role in damping together, further helping to enhance the damping effect and reducing the loss of the first connecting piece, the second connecting piece and the variable-section leaf springs.

Further, after the second end regions of the two variable-section leaf springs are connected and balanced through the balancing part and then connected to the wheel shaft, the variable-section leaf springs on two sides can be prevented from being different in deformation quantity and end height, and the strength and stability of the whole structure can be improved.

Further, the variable cross-section leaf spring is fixed in the second connecting piece through two through holes in a connecting mode, the variable cross-section leaf spring is prevented from rotating, stability of the structure is enhanced, only one through hole is arranged at the other end, the number of the through holes is reduced, overall rigidity is improved, and risks of damage to the connecting position are reduced.

Further, by vertically arranging the mounting holes on the two connecting lugs, torsion in the parallel direction is not easy to occur, and when the second connecting piece is connected with the vehicle body head pipe and the wheel shaft rotates, the whole structure is not easy to deform.

Further, the reinforcing part enables the balance part not to deform easily, and the connecting lug is connected with the reinforcing part, so that the connecting lug is facilitated to keep the vertical direction, and the second end areas of the two variable-section leaf springs are more facilitated to be located on the same plane.

Further, the body of the protective cover assembly covers the outer side of the variable-section plate spring, and the protective cover assembly adopts a rigid structure, has the functions of dust prevention, rain prevention and collision prevention, and prolongs the service life of the variable-section plate spring.

Further, when the stress of the variable-section plate spring is close to the elastic limit, the front end of the variable-section plate spring is restrained by the first limiting piece, and/or the first connecting piece is restrained by the first limiting piece, the stress of the variable-section plate spring is continuously increased, and the height of the front end of the variable-section plate spring and/or the first connecting piece cannot be continuously lowered, so that the variable-section plate spring is not continuously deformed any more. The maximum deformation of the variable-section plate spring is limited, so that the variable-section plate spring does not generate plastic deformation, and the service life of the variable-section plate spring is prolonged.

According to the second aspect of the utility model, the whole structure of the scooter is simplified, and the shock absorption effect and the service life of the shock absorption structure are improved.

The foregoing description is only an overview of the present utility model, and is intended to provide a better understanding of the present utility model, as it is embodied in the following description, with reference to the preferred embodiments of the present utility model and the accompanying drawings.

Drawings

FIG. 1 is a schematic view illustrating a connection manner between a swing arm type shock absorbing structure for a scooter and the scooter according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a swing arm shock absorbing structure for a scooter according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a rocker arm shock absorbing structure for a scooter according to a second embodiment of the present utility model;

fig. 4 is a schematic structural exploded view of a swing arm shock absorbing structure for a scooter according to a second embodiment of the present utility model.

Legend description: 101-front wheels; 102-head tube; 103-pedal; 104-rear wheels; 1-a first connector; 2-a variable cross-section leaf spring; 21-a first end region; 22-middle part; 23-a second end region; 24-through holes; 3-a second connector; 31-a connection; 311-fixing part; 312-connecting lugs; 3121-mounting holes; 32-balancing part; 321-mounting position; 33-reinforcement; 4-a protective cover assembly; 41-body; 42-a first limiting piece; 43-second stop.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

The rocker-type shock absorbing structure for a scooter of a vehicle of the present utility model may be applied to a scooter including wheels including wheel axles and a body including a head pipe 102 and pedals 103. The rocker arm type shock absorbing structure comprises a first connecting piece 1, a second connecting piece 3 and a variable-section plate spring 2. The first connecting piece 1 is connected to a wheel axle. The second connecting piece 3 is connected with the vehicle body. The variable-section leaf spring 2 has a first end region 21 and a second end region 23 opposite to the first end region 21, the first end region 21 being connected to the first connecting member 1, and the second end region 23 being connected to the second connecting member 3. The variable-section leaf spring 2 is configured to vary in sectional area from the first end region 21 to the second end region 23.

According to the solution of the utility model, the first end region 21 of the variable-section leaf spring 2 is fixed to the wheel axle by means of the first connecting piece 1, the second end region 23 is connected to the vehicle body by means of the second connecting piece 3, the vehicle body is supported by the wheel axle and the variable-section leaf spring 2, the supporting force of the variable-section leaf spring 2 being particularly important. Because scooter structure is different, lead to variable cross section leaf spring 2 atress position difference, and then lead to variable cross section leaf spring 2 atress condition difference. The sectional area is increased only at the position where the variable-section plate spring 2 is stressed greatly, the supporting force is ensured, and the supporting performance of the material is fully utilized, so that the material is saved. In addition, the variable-section plate spring 2 is only fixedly connected with the first connecting piece 1 and the second connecting piece 3, so that the whole structure is simple, the structural loss caused by damage or looseness of a fastener is reduced, and the installation is easy.

In particular, the utility model also includes a scooter, including a rocker arm shock absorbing structure for a scooter of any one of the foregoing and embodiments one to three.

The following is a detailed description of specific embodiments.

Embodiment one:

as shown in fig. 1, the rocker arm type shock absorbing structure for a scooter shown in this embodiment may be connected between a front wheel 101 and a head pipe 102, and may also be connected between a pedal 103 and a rear wheel 104.

As shown in fig. 1 and 2, the rocker arm type shock absorbing structure includes two first connection members 1, two variable section leaf springs 2, and a second connection member 3. The two first connecting pieces 1 are respectively connected to two sides of the wheel shaft, and the two first connecting pieces 1 are identical in structure and symmetrically arranged. The two variable-section leaf springs 2 are identical in structure and symmetrically arranged. Each variable-section leaf spring 2 has a first end region 21, a middle region 22, and a second end region 23, the first end region 21 being connected to the first connecting member 1 on the same side, the second end region 23 being connected to the second connecting member 3, the second connecting member 3 being connected to the head pipe 102. The two variable-section plate springs 2 are deformed synchronously and generate restoring forces with the same parallel direction, so that the two variable-section plate springs play a role in damping together, thereby helping to enhance the damping effect and reducing the loss of the first connecting piece 1, the second connecting piece 3 and the variable-section plate springs 2. The variable-section leaf spring 2 is provided so that the sectional area gradually increases from the first end region 21 to the second end region 23.

The first connector 1 may be, for example, a right angle code, the first connector 1 having a vertical portion and a horizontal portion. Wherein the vertical part is provided with a through hole which is adapted to the wheel axle. The outer side of the vertical part of the first connecting piece 1 is fixed on the central shaft of the wheel through the nut, at the moment, the wheel shaft penetrates through the through hole of the vertical part of the first connecting piece 1, the inner side of the through hole is abutted against other connecting structures on the wheel shaft, and the outer side of the through hole is fastened through the nut, so that the first connecting piece 1 cannot rotate along the through hole. The horizontal part of the first connecting piece 1 extends away from the wheel and is provided with screw holes.

The variable-section leaf spring 2 has a trapezoidal cross section with a narrow upper part and a wide lower part, and the first end region 21 of the variable-section leaf spring 2 is provided with a through hole 24 identical to a screw hole of the horizontal part of the first connector 1, and the first connector 1 and the variable-section leaf spring 2 are fixedly connected by bolts. The variable-section leaf spring 2 extends horizontally and toward the vehicle body, has a rectangular overall cross-sectional shape, and has a constant thickness from the first end region 21 to the second end region 23 and an increasing width. The second end region 23 of the variable-section leaf spring 2 is provided with two through-holes 24 arranged side by side. The variable cross-section plate spring 2 is similar to an equal stress beam in structure, and when the stress reaches the total pressure of a vehicle body and a lighter human body, the variable cross-section plate spring is elastically deformed; when the stress reaches the total pressure of the vehicle body and the maximum bearing, the elastic limit is not exceeded. The variable cross-section leaf spring 2 has high rigidity and is not easy to bend sideways. Since the second end region 23 of the variable-section leaf spring 2 is fixed by the two through holes 24 which are arranged in parallel, the variable-section leaf spring 2 is not easy to rotate, the strength of the through holes 24 is low, and only three through holes 24 are arranged on the variable-section leaf spring 2, so that the risk of breakage of the variable-section leaf spring 2 at the through holes 24 can be reduced.

The second connector 3 includes a connecting portion 31, a balance portion 32, and a reinforcing portion 33. The three are connected with each other in pairs, and the whole body is in a symmetrical structure.

The balance portion 32 has a plate-like structure with a large rigidity, and two mounting positions 321 are provided at both ends of the balance portion 32, and the positions of the mounting positions 321 are adapted to the second end region 23 of the variable-section plate spring 2. Each mounting location 321 comprises two screw holes adapted to the through holes 24 of the second end region 23 of the variable section leaf spring 2 to be fixed by bolts.

The reinforcing portion 33 is connected to the side of the balance portion 32, and the reinforcing portion 33 may be, for example, angle steel, and the two side edges of the angle steel have different lengths. The two ends of the angle steel are flush with the balance part 32, and the extending direction of the angle steel is parallel to the balance part 32. The side edge of the balance part 32 far away from the variable-section plate spring 2 is connected with the middle part of the outer side surface of the longer side edge of the angle steel through welding, an obtuse angle is formed between the balance part 32 and the upper half part of the side edge of the angle steel, and the angle is suitable for the vehicle body structure. The longer side of angle steel is equipped with plural screw, can be used to strengthen the connection. The balance part 32 is not easy to deform under the support of the reinforcement part 33, so that the balance part 32 can effectively restrict the second end regions 23 of the two variable-section plate springs 2 to be positioned on the same plane, and the reinforcement part 33 enables the balance part 32 to be symmetrically arranged due to the two first connecting pieces 1, so that the first end regions 21 of the two variable-section plate springs 2 are positioned on the same plane, the deformation amount and the tail end height of the two variable-section plate springs 2 are ensured to be the same, the whole structure of the scooter is more stable, and the service life of the two variable-section plate springs 2 is prolonged.

The connecting part 31 is fixedly connected to the upper middle part of the balance part 32 by welding and comprises two vertical connecting lugs 312 at two sides and a fixing part 311 connected between the two connecting lugs 312. The section of the fixing part 311 is in an obtuse angle shape, and two side edges are respectively tightly attached to the middle part of the balance part 32 and the middle part of the upper half part of the side angle steel, and are connected through welding. The fixing portion 311 is attached to the side edges of the balancing portion 32, and is bent and extended vertically from two sides to form two connecting lugs 312. One side of the connecting lug 312, which is close to the other side of the fixing part 311, extends towards the other side of the fixing part 311, is closed with the other side of the fixing part 311, and is connected through welding; the other side of the connecting lug 312 extends away from the fixing portion 311, and finally forms an acute angle rounded corner facing obliquely upward. The connecting lug 312 is provided with a circular mounting hole 3121 near the rounded corner for fixedly connecting with the vehicle body. Because the mounting holes 3121 on the two connecting lugs 312 are vertically arranged, and the bottom and the side surfaces are all in a welding constraint structure, the shape of the connecting lugs is not easy to deform due to torsion, and because the second connecting piece 3 is connected with the vehicle body head pipe 102, the wheel shaft rotates along with the head pipe 102, and the structure can lead the whole structure of the second connecting piece 3 to be not easy to deform.

Embodiment two:

the rocker arm type shock absorbing structure for a scooter shown in the present embodiment is connected between a pedal 103 and a rear wheel 104, and includes two sets of symmetrically arranged first connecting pieces 1, variable section leaf springs 2, second connecting pieces 3 and protective cover assemblies 4. Since the two sets of the first connecting member 1, the variable-section plate spring 2, the second connecting member 3 and the protective cover assembly 4 are identical in structure, one set will be described.

As shown in fig. 3 and 4, the variable-section plate spring 2 in the present embodiment is connected between the first connector 1 and the second connector 3 by bolts, and the protective cover assembly 4 is provided outside the variable-section plate spring 2 to protect both side surfaces and above the variable-section plate spring 2.

As shown in fig. 2 and 4, the structure of the first connector 1 in this embodiment is the same as that in the first embodiment, so that the description thereof will not be repeated. As shown in fig. 3 and 4, the second connector 3 in this embodiment uses a right angle code similar to that of the first connector 1. The horizontal edge of the second connecting piece 3 is fixedly connected to the lower part of the tail end of the variable-section plate spring 2, two screw holes are formed in the horizontal edge, and the arrangement direction of the screw holes is parallel to the variable-section plate spring 2. The vertical edge of the second connecting piece 3 faces the variable cross-section plate spring 2, and two screw holes are horizontally formed in the vertical edge and are used for being fixedly connected with a vehicle body.

The variable cross-section leaf spring 2 in this embodiment adopts a structure with one thin end and one thick end, and has a rectangular cross section. For convenient connection, the thickness of the parts of the first end area 21 and the second end area 23 provided with screw holes is equal, the thickness of the middle area 22 is gradually and evenly increased, the front end is provided with a through hole 24, the tail end is provided with two through holes 24, the variable-section plate spring 2 is not easy to rotate, the positions of the three through holes 24 are suitable for the first connecting piece 1 and the second connecting piece 3, the circle centers of the three through holes are all positioned on the center shaft of the variable-section plate spring 2, and the risk of fracture of the variable-section plate spring 2 at the through holes 24 is reduced due to fewer through holes 24. The variable-section leaf spring 2 extends in the direction toward the pedal 103.

The protective cover assembly 4 includes a body 41, a first stop 42 and a second stop 43. The body 41 is a rigid structure in the shape of an elongated bar, with a bottom surface and one end open. Two screw holes are arranged on the closed end of the body 41, and the body 41 is fixedly connected with the vertical side of the second connecting piece 3 and the vehicle body through the screw holes by bolts. The inner top surface of the body 41, which is close to one end of the first connecting piece 1, is provided with a first limiting piece 42, the cross section of the first limiting piece 42 is rectangular and annular, and the top is welded on the inner top surface of the body 41. The variable cross-section plate spring 2 passes through the space between the upper inner surface and the lower inner surface of the first limiting piece 42, after the variable cross-section plate spring 2 is deformed under force, the front end of the variable cross-section plate spring 2 is offset upwards or downwards relative to the tail end, after the deformation reaches a certain degree, the variable cross-section plate spring 2 is in contact with the inner surface above the first limiting piece 42 or the inner surface below the first limiting piece 42, the variable cross-section plate spring 2 is restrained by the first limiting piece 42 to avoid deformation, and the deformation degree of the variable cross-section plate spring 2 is ensured not to exceed the elastic limit. The upper and lower parts of the opening end of the body 41 are also provided with second limiting pieces 43, the second limiting pieces 43 on the upper part are of baffle-shaped structures and are directly connected to one end of the upper surface of the body 41, and the second limiting pieces 43 on the lower part are of baffle-shaped structures with two ends connected to the body 41. The second limiting parts 43 are respectively located above and below the first connecting part 1, when the variable-section plate spring 2 is not deformed, the second limiting parts 43 do not collide with the first connecting part 1, when the variable-section plate spring 2 is deformed, the first connecting part 1 is close to the second limiting parts 43 along with the deformation of the variable-section plate spring 2, and after the first connecting part 1 collides with the second limiting parts 43, the variable-section plate spring 2 does not deform continuously, so that the service life of the variable-section plate spring is prolonged, and the damage risk is reduced.

Embodiment III:

the rocker arm type shock absorbing structure for a scooter shown in the third embodiment may be applied to, for example, a scooter including wheels including wheel axles and a body including a head pipe 102.

The rocker arm type shock absorbing structure for a scooter in this embodiment includes a set of first connecting pieces 1, a variable-section plate spring 2, and second connecting pieces 3. In the embodiment, one end of the first connecting piece 1 is of a U-shaped structure and is fixedly connected to two sides of a wheel shaft through round through holes respectively; the other end is connected to the first end region 21 of the variable-section plate spring 2 by a bolt, so that the variable-section plate spring 2 forms an acute angle with the first connecting piece 1, and the specific angle is adapted to the vehicle body structure. The structure of the variable-section plate spring 2 is similar to that in the second embodiment, except that the variable-section plate spring 2 has a symmetrical structure as a whole in the present embodiment. The second connecting member 3 is similar to the embodiment, except that in the present embodiment, only a mounting location 321 is provided in the middle of the balance portion 32, and the second end region 23 of the variable-section leaf spring 2 is connected below the fixing portion 311 and the balance portion 32 at the mounting location 321.

Embodiment four:

the rocker arm type shock absorbing structure for a scooter shown in the fourth embodiment may be applied to, for example, a scooter including wheels including wheel axles and a body including a head pipe 102.

The rocker arm type shock absorbing structure for a scooter in this embodiment is similar to the first embodiment in that the structure of the variable section plate spring 2 is the same in overall thickness, the width of the first end region 21 is the same as that of the second end region 23, the width of the middle region 22 is larger, the structure enhances the middle strength, and the rocker arm type shock absorbing structure is suitable for the condition that the stress point of the variable section plate spring 2 is located in the middle region 22.

Fifth embodiment:

the rocker arm type shock absorbing structure for a scooter shown in the fifth embodiment may be applied to, for example, a scooter including wheels including wheel axles and a body including a head pipe 102.

The rocker arm type shock absorbing structure for a scooter in this embodiment is similar to the first embodiment in that the structure of the variable section plate spring 2 is the same in overall thickness, the width of the first end region 21 is the same as that of the second end region 23, the width of the middle region 22 is smaller, the structure enhances the middle elasticity, and the rocker arm type shock absorbing structure is suitable for the condition that the rigidity and strength of the material of the variable section plate spring 2 are both larger.

The first connector 1 and the second connector 3 of the above-described embodiment may be changed according to the specific structure of the vehicle body, and the body 41 of the protective cover assembly 4 may be fixedly connected to the vehicle body according to the requirement, which falls within the protection scope of the present utility model.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. A rocking arm formula shock-absorbing structure for scooter, its characterized in that, the scooter includes automobile body, wheel and runs through the axletree at wheel center, a rocking arm formula shock-absorbing structure for scooter includes:

a first connecting piece (1) connected with the wheel shaft;

a second connecting piece (3) connected with the vehicle body;

-a variable-section leaf spring (2) having a first end region (21) and a second end region (23) opposite to the first end region (21), the first end region (21) being connected to the first connection member (1), the second end region (23) being connected to the second connection member (3);

the variable-section leaf spring (2) is configured to vary in cross-sectional area from the first end region (21) to the second end region (23).

2. Rocker arm shock absorbing structure for scooter according to claim 1, characterized in that the variable section leaf spring (2) further comprises a middle zone (22) between the first end zone (21) and the second end zone (23);

the variable-section leaf spring (2) is configured such that the cross-sectional area increases from the first end region (21) to the second end region (23);

or the variable-section leaf spring (2) is configured such that the first end region (21) and the second end region (23) have the same cross-sectional area, and the cross-sectional area of the intermediate region (22) is smaller than the cross-sectional area of the first end region (21);

or the variable-section leaf spring (2) is configured such that the first end region (21) and the second end region (23) have the same cross-sectional area, and the cross-sectional area of the intermediate region (22) is larger than the cross-sectional area of the first end region (21).

3. Rocker arm shock absorbing structure for scooter according to claim 1, characterized in that the variable section leaf spring (2) is configured such that the thickness from the first end region (21) to the second end region (23) is constant, the width varies;

or the variable-section leaf spring (2) is configured such that the width from the first end region (21) to the second end region (23) is constant and the thickness is variable.

4. A rocker arm shock absorbing structure for a scooter according to any one of claims 1-3, wherein the number of the first connecting member (1) and the variable section leaf spring (2) is two;

the two first connecting pieces (1) are respectively arranged on two sides of the wheel shaft, and each variable-section plate spring (2) corresponds to one first connecting piece (1).

5. Rocker arm shock absorbing structure for scooter according to claim 4, characterized in that the second connector (3) has:

a connection part (31) for connection with the vehicle body;

and a balance part (32) for providing two mounting positions (321) for mounting the two variable-section leaf springs (2), wherein the two mounting positions (321) are in the same plane, so that the second end regions (23) of the two variable-section leaf springs (2) are in the same plane.

6. Rocker arm shock absorbing structure for scooter according to claim 5, characterized in that the first end region (21) of each variable section leaf spring (2) has one through hole (24) to be fastened at the first connector (1) by means of a fastener;

the second end region (23) of each variable-section leaf spring (2) has two through holes (24) to be fastened at the corresponding mounting locations (321) by fasteners.

7. The rocker arm shock absorbing structure for scooter according to claim 5, wherein the connecting portion (31) has two connecting lugs (312) arranged in parallel at a distance from each other and perpendicular to the mounting position (321), each connecting lug (312) has a mounting hole (3121), and the two mounting holes (3121) of the two connecting lugs (312) are disposed opposite to each other;

the second connecting piece (3) further comprises a reinforcing part (33) with an included angle with the balance part (32), and the two connecting lugs (312) are connected with the reinforcing part (33).

8. The rocker arm shock absorbing structure for a scooter of any one of claims 1-3 and 5-7, further comprising a protective cover assembly (4), the rocker arm shock absorbing structure for a scooter further comprising a protective cover assembly (4);

the protection cover assembly (4) comprises a body (41), the body (41) is of a rigid structure and is provided with a containing space for containing the variable-section plate spring (2), one end of the body (41) is close to the first connecting piece (1) and is provided with an opening, and the variable-section plate spring (2) is arranged in the body (41) and penetrates through the opening so as to extend out of the body (41).

9. Rocker arm shock absorbing structure for scooter according to claim 8, characterized in that the protective cover assembly (4) further comprises:

the first limiting piece (42) is arranged in the accommodating space and is close to one end of the first connecting piece (1), and the variable-section plate spring (2) penetrates through the first limiting piece (42); and/or

The second limiting piece (43) is positioned outside the accommodating space and connected with one end, close to the second connecting piece (3), of the body (41), and the variable-section plate spring (2) penetrates through the second limiting piece (43).

10. A scooter comprising a rocker arm shock absorbing structure as claimed in any one of claims 1 to 9.