CN2725156Y

CN2725156Y - Motorcycle

Info

Publication number: CN2725156Y
Application number: CN 200420089187
Authority: CN
Inventors: 蒋传华
Original assignee: Chongqing Loncin Industry Group Co Ltd
Current assignee: Chongqing Loncin Industry Group Co Ltd
Priority date: 2004-09-02
Filing date: 2004-09-02
Publication date: 2005-09-14
Anticipated expiration: 2014-09-02

Abstract

The utility model discloses a motorcycle, comprising a center vibration damper with a damping spring which is provided with at least two-stage hardness. The motorcycle can satisfy the requirement of different users to the degree of comfort, when one person or more people drive the motorcycle, the motorcycle has a better damping action, and the selection of the hardness by designers can be more flexible.

Description

Motor bike

Technical field

The utility model relates to a kind of motor bike.

Background technology

Existing a kind of motor bike is equipped with central bumper, its installation site is with reference to Fig. 3 and shown in Figure 4, central authorities' bumper 100 is installed in the motor bike middle part, adopt a damping spring to carry out damping, damping spring is installed in outside the central damper, and used damping spring is the spring of an one-level rigidity, and promptly the rigidity value of whole spring is constant, the diameter of its spring wire is identical, and except that the bracing ring at two ends pitches such as other parts are.The motor bike of this one-level rigidity central authorities bumper when design, give spring rigidity value K determine to have brought difficulty, because it is bigger that the K value is chosen, when a people rides then damping spring seem too hard, the comparison severity that car when walking afterbody is beated allows the people feel very uncomfortable; If it is less that the K value is chosen, damping spring seems too soft when 2-3 people rides, and bumper is pressed easily and collapsed, and loses cushioning effect, rides uncomfortablely equally, is difficult to satisfy the operating needs of different user.

The utility model content

The purpose of this utility model is to provide a kind of motor bike, this motor bike can satisfy the needs of different user, motor bike drives a people or many man-hours can both produce damping effect preferably, make the rider feel pleasant, and when having made things convenient for the designer to design to the selection of the rigidity value K of spring.

Motor bike of the present utility model comprises the central bumper that has damping spring, and described damping spring is that the damping spring of two stage stiffness is at least arranged.

The damping spring of described two stage stiffness at least can be two or more single-stage rigid springs of tandem use, rigidity difference between the single-stage rigid spring, the single-stage rigid spring of different-stiffness can adopt the different spring of pitch value also can be the different spring of spring wire diameter, but efficiency of assembling will reduce when adopting a plurality of spring, and the coupling end of two springs can produce relative displacement, can produce radially swing and noise; Therefore, preferable mode is to adopt a spring, and whole spring has two pitch value at least; Better embodiment is to adopt the two stage stiffness spring, whole spring has two pitch value, promptly wherein a part is a pitch, another part then is another pitch, to produce two stage stiffness, promptly satisfied the not requirement of traveling comfort simultaneously of motor bike rider number, the work capacity in the time of can as far as possible reducing design again.Because motor bike generally can only drive 1-3 people, just but damping spring rigidity progression is the two-stage meet requirements, if adopt the above rigidity of two-stage, can increase the work difficulty of design and processing.

The preferable structure of described two stage stiffness damping spring is: the diameter of spring wire is φ 10～15mm, and the spring length overall is 100～150mm, and effective number of coils of first order rigidity section is 2～4 circles, and this part pitch is 20～23mm; Effective number of coils of second stage rigidity section is 2～4 circles, and this part pitch is 15～17mm, and the bracing ring of both ends of the spring respectively is a circle.The two stage stiffness damping spring good damping effect of this specification, the two stage stiffness coupling is reasonable and the spring cost is low.

The useful effect of utility model then is: because the central bumper of this motor bike adopts the damping spring of two stage stiffness at least, when motor bike drives a man-hour, because of weight lighter, the relatively low part of damping spring rigidity can produce gently good cushioning effect, and the higher relatively part of rigidity this moment is contributed less to cushioning effect; When driving two people or three man-hours, the part that the relatively large part of its rigidity and rigidity are lower produces cushioning effect simultaneously, still can reach damping effect preferably, not only can satisfy the requirement of different user, and make the designer have more alerting ability the selection of rigidity to comfort level.

Description of drawings

Below in conjunction with accompanying drawing and a preferred embodiment motor bike of the present utility model is described further.

A kind of better embodiment structural representation of the central bumper that Fig. 1 uses for motor bike of the present utility model;

Fig. 2 is the stiffness curve figure of two stage stiffness damping spring;

Fig. 3 is the mounting means scheme drawing of the central bumper in the motor bike;

Fig. 4 is the birds-eye view of Fig. 2.

The specific embodiment

Motor bike in the present embodiment comprises a central bumper 100, and its mounting means as shown in Figures 3 and 4.The structure of central authorities' bumper as shown in Figure 1, central authorities' absorber main body part is made of a central damper 4 and a two stage stiffness damping spring 6, two stage stiffness damping spring 6 is a spring with two pitch value, pull bar 14 ends of central authorities' damper 4 are equipped with a top connection 11 by helicitic texture, top connection 11 ends are connecting bush structure 12, cylinder head one end of central authorities' damper 4 is connected with another group bush structure, this group bush structure is made of lining 3 under DU lining 2 and the central damping, the dustproof packing ring 1 that seals being installed at the two ends of DU lining 2 entering in its gap to prevent dust etc.Damping spring 6 two ends are by filling up 10 and dust boot 7 relative positionings on central damper on spring underlay 5, nest 9, the spring.In dust boot 7, have a cushion blocking 8 to be through on the pull bar 14 of central damper 4, when preventing that vibrations from collapsing pine than big spring on central authorities' damper 4 and thin nut 13 or the spring pad 10 rigid collision impaired, and certain cushioning effect is arranged simultaneously.

The diameter of the whole spring wire of the two stage stiffness damping spring in the present embodiment is identical, but its pitch difference is to form the two stage stiffness value.The diameter of the spring wire of damping spring 6 is φ 13mm, and the spring length overall is 113.5mm, and effective number of coils of first order rigidity section A is 2.5 circles, and this part pitch is 22.86mm; Effective number of coils of second stage rigidity section B is 2.25 circles, and this part pitch is 16.16mm, and both ends of the spring respectively has a circle as bracing ring.The stiffness curve of this two stage stiffness damping spring that two pitches are arranged as shown in Figure 2, in the compression of spring amount in 16mm to 9mm scope, its rigidity is corresponding lower, basically partly produce cushioning effect by second stage rigidity B, its rigidity value K1 is 211.27N/mm, when the compression of spring amount in the 9mm-14mm scope, first order rigidity A part produces cushioning effect simultaneously with second stage rigidity B part, its rigidity value K2 is 420.43N/mm, to adapt to the damping requirement of one or more riders.The damping spring 6 of this specification can be suitable for the needs of most motor bike in the present embodiment, so have the wide advantage of applicability.

Claims

1, a kind of motor bike comprises the central bumper that has damping spring, it is characterized in that: described damping spring is that the damping spring of two stage stiffness is at least arranged.

2, motor bike as claimed in claim 1 is characterized in that: the damping spring of described two stage stiffness at least is one, and whole spring has two pitch value at least.

3, motor bike as claimed in claim 1 is characterized in that: the damping spring of described two stage stiffness at least is the two stage stiffness spring, and whole spring has two pitch value.

4, motor bike as claimed in claim 3, it is characterized in that: the spring wire diameter of described two stage stiffness damping spring is φ 10～15mm, the spring length overall is 100～150mm, and effective number of coils of first order rigidity section is 2～4 circles, and this part pitch is 20～23mm; Effective number of coils of second stage rigidity section is 2～4 circles, and this part pitch is 15～17mm, and the bracing ring of both ends of the spring respectively is a circle.

5, motor bike as claimed in claim 3 is characterized in that: the spring wire diameter of described two stage stiffness damping spring is φ 13mm, and the spring length overall is 113mm, and effective number of coils of first order rigidity section is 2.5 circles, and this part pitch is 22.86mm; Effective number of coils of second stage rigidity section is 2.25 circles, and this part pitch is 16.16mm, and the bracing ring of both ends of the spring respectively is a circle.