CN2454243Y

CN2454243Y - Double central-shock-absorbing bicycle

Info

Publication number: CN2454243Y
Application number: CN 00253887
Authority: CN
Inventors: 蒋云
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-11
Filing date: 2000-10-11
Publication date: 2001-10-17
Anticipated expiration: 2010-10-11

Abstract

The utility model relates to a double centre shock absorbing bicycle which is characterized in that a frame is divided into two parts which are a front tripod composed of a cross beam 1, an inclined pipe 2 and a vertical pipe 3 and a back tripod composed of a column pipe 4, a back fork 5 and a flat fork 6. The lower end of the column pipe is a centre shaft 7, the lower end of a saddle seat steel pipe 10 and the back end of the cross beam are respectively connected with the upper end of the column pipe through an upper pivot 8 and a front pivot 9, a front and a back pressure reducers 11, 12 are arranged between the front side of the saddle seat steel pipe and the cross beam and the back side of saddle seat steel pipe and a back fork in the shape of a Chinese character 'ba', and the vertical pipe is tightly abutted with the column pipe in parallel when the saddle seat is in zero load. The utility model has the advantages of good shock absorbing effect, comfortable riding, easy installation of the shock absorber and low cost, and the shock absorbing and the non-shock absorbing states can be changed with each other.

Description

Two central damping bicycles

The utility model relates to the bicycle field, specifically, relates to a kind of two central damping bicycle.

Traditional damping bicycle all is that rely on former and later two bumpers independent is used for realizing a saddle damping.Its front-wheel bumper is two damping springs that are supported on the preceding justice, and the rear wheel shock-absorbing device is the central bumper of single spring loaded that is in a saddle front lower place.Because people's weight is several times of bicycle, make that therefore traditional damping bicycle its saddle height difference overhead under unloaded and two kinds of different conditions of load is bigger, can reach 5cm usually.Therefore bumper has certain bounce to the people when the rider gets on and off, thereby makes troubles for getting on and off of cyclist.In addition, because the structure of front-wheel bumper is complicated, cause its price higher, and the car load damping effect is unsatisfactory.Have, people are not need damping by bike the time on flat road surface again, can consume certain energy because the heavy curtain of bumper is moving, thereby influence speed by bike.And traditional damping bicycle can not become non-shock-absorbing type by Iterim Change, thereby can not satisfy the different needs of people under different road conditions.

The purpose of this utility model provides a kind of good damping effect, and the height difference of seat saddle under unloaded and two kinds of different conditions of load is little, the two central damping bicycle that can exchange easily between damping and non-damping two states.

The technical solution of the utility model is as follows:

1. two central damping bicycle, it has front-wheel, trailing wheel, vehicle frame, front fork, handlebar, the seat saddle, pedal and flywheel, spider and Vee formation frame two parts before its vehicle frame is divided into, preceding spider is by crossbeam, inclined tube and vertical tube constitute, the Vee formation frame is by column jecket, back vent and chain stay constitute, the lower end of column jecket is the pedal axis, the upper end of column jecket links together with the lower end of seat Anshan iron and steel plant pipe and the rear end of crossbeam respectively by head lamp brush guard pivot and preceding pivot, a feasible seat Anshan iron and steel plant pipe, preceding spider, Vee formation frame three can be free movable in same plane by pivot, before the present Anshan iron and steel plant pipe, back both sides and crossbeam, between the back vent by splayed be equipped be in 5～30kg power pressured state before, rear shock absorber, the two parallel the abutting against together of vertical tube and column jecket when feasible present saddle is unloaded.

2. above-mentioned forward and backward bumper preferably all is the spring loaded central authorities bumper that conventional damping bicycle is used.

3. the preferred angle that forms 30～60 ° separately with seat Anshan iron and steel plant pipe of above-mentioned forward and backward bumper.

4. above-mentioned column jecket front side is preferably formed one can prevent that vertical tube is to the moving groove of both sides heavy curtain.

5. above-mentioned groove preferably is concave arc shape.

6. the inboard of above-mentioned groove preferably has a rubber washer.

7. thereby preferably having one above above-mentioned pedal axis is used for making adjacent to each other be fixed together parallel with column jecket of vertical tube bicycle change the connecting element of non-shock-absorbing type into.

8. above-mentioned connecting element preferably length can be vertical tube and column jecket metal tape in the two is enclosed in, its two ends are by being bolted on the vehicle frame steel pipe.

At length explain shock absorption principle of the present utility model below.Owing to by splayed the forward and backward bumper that is in 5～30kg power pressured state is installed between the forward and backward both sides of present Anshan iron and steel plant pipe and crossbeam, the back vent, make when in the scope of saddle load about 0～40kg the two parallel abutting against together of vertical tube and column jecket.When seat saddle load when 40kg is above or when wheel is subjected to impact force action, pivot is a fulcrum flare up certain angle before vertical tube and the column jecket, the impulsive force that load is big more or wheel is subjected to is big more, open angle is just big more between vertical tube and the column jecket, so a saddle is reduced relatively, just slowed down the impulse force that the seat saddle makes progress, thus the cushioning effect of playing.In addition, if forward and backward bumper strained condition when mounted less than 5kg power, then inclined tube and the open angle of column jecket are excessive by bike the time, and cause the seat saddle height change when getting on and off excessive, therefore bad.And if greater than 30kg power, then inclined tube and the open angle too small of column jecket by bike the time, thus can not give full play to the buffer action of impact power, so also bad.Therefore the strained condition with bumper is limited in the scope of 5～30kg power.And bumper of the present utility model is adjustable, can strained condition be adjusted in the suitable scope according to cyclist's body weight.On the other hand, because bumper is installed the forward and backward both sides of present Anshan iron and steel plant pipe respectively, therefore the seat saddle is to because the unexpected variation of the speed of a motor vehicle, and for example sudden stop or the unexpected horizontal direction impulsive force that causes such as collide also have certain buffer action, and this is that conventional damping bicycle is unexistent.In addition, this shock-damping structure makes when present saddle is stressed or wheel when being subjected to impact force action, and the seat saddle is less with the variation of ground-surface vertical distance, thereby makes the cyclist not feel tangible bounce when getting on and off.In addition, this shock-absorbing type bicycle preferably has a connecting element flexibly above the axle therein, can when needed vertical tube and column jecket be fixed together like this, thereby make bicycle be transformed into non-shock-absorbing type.Structure to said connecting element is provided with specific (special) requirements, as long as vertical tube and post can be fixed together.The preferred strip metal band that uses is the simplest so.

Compare with the damping bicycle of prior art, the utlity model has following good effect: (1) good damping effect; (2) the height difference of seat saddle under unloaded and load two states is little; (3) can between damping and non-damping two states, exchange easily; (4) installation of bumper or replacing are all convenient and easy; (5) bumper is cheap.

Explain the utility model below in conjunction with accompanying drawing.

Fig. 1 is the scheme drawing of prior art damping bicycle.Wherein, A is a front shock absorber; B is central bumper; C is the pedal axis; D is a pivot.

State when Fig. 2 represents that the present saddle of the two central damping bicycles of the utility model is unloaded.

State when Fig. 3 represents the present saddle load of the two central damping bicycles of the utility model.

Fig. 4 is the section drawing of cutting open along the A-A line among Fig. 3.

Each code name is defined as follows in Fig. 2～4: the 1-crossbeam; The 2-inclined tube; The 3-vertical tube; The 4-column jecket; The 5-back vent; The 6-chain stay; 7-pedal axis; The 8-head lamp brush guard pivot; Pivot before the 9-; 10-seat Anshan iron and steel plant pipe; The 11-front shock absorber; The 12-rear shock absorber; The 13-groove; The 14-rubber washer.

Should illustrate that the virgule among Fig. 1 to Fig. 3 uses in order to distinguish different parts, is not hatching.Having only the virgule among Fig. 4 is hatching.

As can be seen from Figure 2, when present saddle was unloaded, vertical tube 3 and column jecket 4 abutted against together abreast, and vertical tube 3 firmly is embedded in the groove 13 of column jecket 4, can prevent that therefore the heavy curtain of vertical tube 3 is moving.As can be seen from Figure 3, when being present the saddle load, pivot 9 opens at angle for fulcrum before vertical tube 3 and the column jecket 4.This angle changes along with the stressed size of seat saddle.As can be seen from Figure 4, rubber washer 14 is arranged in groove 13, thereby the heavy curtain that can prevent vertical tube 3 better is moving.

Enumerate embodiment below and further explain the utility model.

Embodiment 1

Make two central damping bicycles of the present utility model according to the schematic construction shown in Fig. 2,3,4, its tire rim, front fork, handlebar all the use common 26 " part of demarcation type bicycle.Forward and backward bumper is the central bumper of traditional damping bicycle, two bumpers separately with the tubular angle at 45 of seat Anshan iron and steel plant.Two bumpers are in the pressured state of 20kg power when mounted separately, and they are exerted pressure to crossbeam and back vent respectively, make that vertical tube 3 and column jecket 4 abutted against together abreast when the present stressed about 40kg of saddle was following.When the present stressed about 40kg of saddle was above, vertical tube 3 and column jecket 4 just opened at an angle.Through test, to ride from the 10 people examination of 50～80kg by body weight, vertical tube 3 and column jecket 4 open angles change in 3 ° to 10 ° scope.Pressure when the bumper of present embodiment is installed can arbitrarily be adjusted according to rider's body weight.Therefore even make that the extraordinary people of body weight open angle can be not excessive yet between vertical tube 3 and the column jecket 4, thereby make that the seat saddle height change when getting on and off can be not excessive by bike the time.The result who is ridden by above-mentioned 10 people examination shows that the damping performance of present embodiment damping bicycle is good, and the height change of seat saddle is no more than 2cm when getting on and off, and brings a kind of comfort to the rider.When on flat road surface, riding simultaneously,, it can be changed into non-shock-absorbing type as long as utilize the connecting element (not shown) that vertical tube 3 and column jecket 4 are fixed together, very convenient.

Claims

1. two central damping bicycle, it has front-wheel, trailing wheel, vehicle frame, front fork, handlebar, the seat saddle, pedal and flywheel, it is characterized in that, spider and Vee formation frame two parts before its vehicle frame is divided into, preceding spider is by crossbeam (1), inclined tube (2) and vertical tube (3) constitute, the Vee formation frame is by column jecket (4), back vent (5) and chain stay (6) constitute, the lower end of column jecket is pedal axis (7), the upper end of column jecket links together with the lower end of seat Anshan iron and steel plant pipe (10) and the rear end of crossbeam respectively by head lamp brush guard pivot (8) and preceding pivot (9), a feasible seat Anshan iron and steel plant pipe, preceding spider, Vee formation frame three can be free movable in same plane by pivot, before the present Anshan iron and steel plant pipe, back both sides and crossbeam, between the back vent by splayed be equipped be in 5～30kg power pressured state before, rear shock absorber (11, vertical tube (3) and the two parallel abutting against together of column jecket (4) when 12), feasible present saddle is unloaded.

2. two central damping bicycle as claimed in claim 1 is characterized in that, wherein said forward and backward bumper (11,12) all is the spring loaded central authorities bumper that conventional damping bicycle is used.

3. two central damping bicycle as claimed in claim 1 or 2 is characterized in that, wherein said forward and backward bumper (11,12) forms 30～60 ° angle separately with seat Anshan iron and steel plant pipe (10).

4. two central damping bicycle as claimed in claim 1 is characterized in that, wherein said column jecket (4) front side forms one can prevent that vertical tube (3) is to the moving groove (13) of both sides heavy curtain.

5. two central damping bicycle as claimed in claim 4 is characterized in that wherein said groove (13) is concave arc shape.

6. as claim 4 or 5 described two central damping bicycles, it is characterized in that the inboard of wherein said groove (13) has a rubber washer (14).

7. two central damping bicycle as claimed in claim 1, it is characterized in that, have in the top of said pedal axis (7) one be used for vertical tube (3) with column jecket (4) thus parallel being fixed together adjacent to each other makes bicycle change the connecting element of non-shock-absorbing type into.

8. two central damping bicycle as claimed in claim 7 is characterized in that, wherein said connecting element is that a length can the two be enclosed in interior metal tape vertical tube (3) and column jecket (4), and its two ends are by being bolted on the vehicle frame steel pipe.