CN1702012A - Bicycle vibration-damping carriage - Google Patents

Bicycle vibration-damping carriage Download PDF

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Publication number
CN1702012A
CN1702012A CNA2004100568092A CN200410056809A CN1702012A CN 1702012 A CN1702012 A CN 1702012A CN A2004100568092 A CNA2004100568092 A CN A2004100568092A CN 200410056809 A CN200410056809 A CN 200410056809A CN 1702012 A CN1702012 A CN 1702012A
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CN
China
Prior art keywords
support unit
vehicle seat
arm
wheel
charge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2004100568092A
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Chinese (zh)
Inventor
郑灿淇
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Individual
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Individual
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Filing date
Publication date
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Publication of CN1702012A publication Critical patent/CN1702012A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A42HEADWEAR
    • A42BHATS; HEAD COVERINGS
    • A42B3/00Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04Parts, details or accessories of helmets
    • A42B3/28Ventilating arrangements
    • A42B3/281Air ducting systems
    • A42B3/283Air inlets or outlets, with or without closure shutters
    • AHUMAN NECESSITIES
    • A42HEADWEAR
    • A42BHATS; HEAD COVERINGS
    • A42B3/00Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04Parts, details or accessories of helmets
    • A42B3/06Impact-absorbing shells, e.g. of crash helmets
    • AHUMAN NECESSITIES
    • A42HEADWEAR
    • A42BHATS; HEAD COVERINGS
    • A42B3/00Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04Parts, details or accessories of helmets
    • A42B3/10Linings
    • A42B3/14Suspension devices

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  • Automatic Cycles, And Cycles In General (AREA)

Abstract

The present invention relates to a shock-absorbing frame for a bicycle, which has elasticity such that impact and vibration can be automatically absorbed, and accident caused by impact and vibration can be prevented to protect the rider's safety. And even when the seat moves up and down, the bicycle frame can prevent the bounce up and down of the rider, and simple structure is provided such that assembling is convenient. According to the invention, main tube connects to the rear wheel support unit by the wheel balance arm, and the seat support unit connects onto the main tube by the upper and lower seat balance arms to form a parallelogram connection structure, and the elastic support unit is supported by the main tube, the rear wheel support unit and the seat support unit. Thus a part of the elastic support unit connected onto the seat support unit can move up and down, such that the impact and vibration transmitted to the bicycle frame via the front wheel and the rear wheel can be absorbed.

Description

The frame for reducing vibration of bicycle
Technical field
The frame for reducing vibration of relate generally to bicycle of the present invention more specifically, relates to the frame for reducing vibration of bicycle, and its shape and structure are improved, and is delivered to cyclist's vibration or impact in order to automatic absorption.
Background technology
Usually, bicycle is the power-actuated two-wheeled type vehicle that applied by the cyclist.Bicycle comprises wheel, vehicle frame, vehicle seat, chain, driving device and other parts.Front-wheel is used for bicycle operated, and trailing wheel is used to drive bicycle.When the cyclist stepped on stretcher, application force converted rotational force to by crank.Rotational force is by being delivered to trailing wheel with hinge wheel ingear chain.And rim brake is connected with trailing wheel with front-wheel, is independent operation.
Wheel comprises front-wheel and trailing wheel.The all following manufacturing of each front-wheel and trailing wheel.That is, 36,32 or 40 spokes are inserted in the exterior hole of wheel hub.Metal rim matches with spoke, and covers tire on wheel rim.The hub spindle of front-wheel is contained on the suspension, and the hub spindle of trailing wheel is contained in vehicle seat and supports the joint that supports with chain.
Vehicle frame forms the basic structure of bicycle, and comprises that suspension, preceding pipe, underframe shell, saddle tube, crossbar, two chains support and two vehicle seats supports.Suspension supports front-wheel, and insert in the preceding pipe its upper end.The underframe shell is connected with managing down by preceding pipe.And an end of saddle tube is contained on the underframe shell, and the other end is contained on the vehicle seat.Crossbar is connected to the top of saddle tube on the top of preceding pipe.The end that each chain supports all is connected with the underframe shell, and its other end all is connected with the hub spindle of trailing wheel.And the end that each vehicle seat supports all is connected with the top of saddle tube, and the other end all is connected with the hub spindle of trailing wheel.
Vehicle seat is of different sizes and shape according to the type of bicycle.Vehicle seat is contained in the upper end of saddle tube, makes by covering leather or plastics forming spare on underframe.And when the normal speed of bicycle was hanged down, vehicle seat must be wide, and support by having outstanding elastomeric spring.On the contrary, when the normal speed of bicycle was high, vehicle seat must be to reach, with the leg that prevents the cyclist to lopsidedness.At this moment, the antagonistic force of stretcher increases, thereby does not need spring.
The function of chain and driving device is that propulsive effort is delivered to trailing wheel, then according to ratio of number of teeth conversion driving power, thereby drives trailing wheel.On principle, the size of stretcher is to determine according to the width of cyclist's shoes.But the shape and size of stretcher can change according to the type of bicycle.That is, the bicycle of general type uses the stretcher that rubber is housed, and sports bicycle uses the metal leg pedal, and race bicycle uses the narrow stretcher of width.The left foot pedal utilizes the left hand screw threads for fastening on crank, thereby the left foot pedal can not unclamp.Crank is to be made by the steel or the light alloy material that forge, and by remaining on the vehicle frame at insertion spring cotter on the crank shaft.
And, the ratio of number of teeth of chain sprocket and rear axle sprocket wheel is defined as ratio of number of teeth.Stretcher changes according to ratio of number of teeth with the RPM ratio and the torque ratio of trailing wheel.The rear axle sprocket wheel is made by steel or light alloy material.The rear axle sprocket wheel has polytype: the sprocket wheel that strand wheel, two or three sprocket wheels, two or three sprocket wheels have two or three sizes differences and arrange by preset space length, or the like.The rear axle sprocket wheel combines with a plurality of flywheels, thereby the driving device with 8-15 gear is provided, and therefore can be applied to sports bicycle.Driving device can be according to various factors, comprise that road conditions, wind speed, speed wait to select best ratio of number of teeth,, and can traveling gear drive to obtain actv..Existing two types driving device obtains to use: gear wheel type driving device and speed change type driving device.The structure of gear wheel type driving device is in the wheel hub of trailing wheel planetary wheel to be installed.The structure of speed change type driving device is, the sprocket wheel of 2-6 different size is installed on flywheel, and when mobile chain and chain engages.
The shape of the vehicle frame of standard bicycle is by connection pipe two triangles connected to one another.Every pipe is all made by low carbon steel pipe or high tensile steel tube, and its external diameter is 25.4-28.6mm, and thickness is 1-1.4mm.Using under the situation of special steel pipe, these pipes are connected to a pipe and connect, and it is forgeable iron that pipe connects, or are that the thin and light iron compacting of 0.4-1.0mm forms by width.Therefore, bonded assembly tubing integrates by the vehicle frame of soldering or brazing technology and bicycle.
But all parts of this traditional vehicle frame all are connected to one another by welding method, thereby need long time production and assembling vehicle frame.Therefore, the assembling cycle of bicycle is elongated, and capacity rating reduces.
And because many pipes all are connected to one another by welding method, and defective welding method can cause defective product.In this case, do not wish to carry out once more the assembling of bicycle.
And traditional vehicle frame only forms the basic structure of bicycle, and does not have enough intensity.Therefore, when because uneven road conditions causes vibration to front-wheel and trailing wheel or when impacting, vibration or impact and will be delivered to the cyclist by the vehicle frame of bicycle.That is,, a kind of device is not installed is used for absorbing vibration or impact in the desired location of vehicle frame or on a position between wheel and the vehicle frame.Like this,, impact being delivered to the cyclist by vehicle frame, vehicle seat and handle when vibration or impact effect during in wheel, thus vibration or impact the cyclist is come to harm.
Absorbing in the amusement bicycle that impacts or vibrate,, a kind of bicycle that has device for impact absorbing on its wheel or vehicle frame has been proposed as mountain bike.But this structure only is limited on the special bicycle.And, a plurality of parts must be assembled with each other, thereby make the manufacturing cycle prolong, manufacturing cost increases, and the maintenance of bicycle becomes difficult.
Summary of the invention
Therefore, consider that the problems referred to above that exist in the prior art propose the present invention.An object of the present invention is to provide a kind of frame for reducing vibration of bicycle, its structure is that vehicle frame has elasticity, impacts or vibration thereby can automatically absorb, and prevents to impact or vibrate the injury cyclist, thereby guarantees cyclist's safety.And vehicle frame can prevent that the cyclist from vertically bouncing, and simple in structure, thus ease of assembly.
Description of drawings
In conjunction with the accompanying drawings, from following detailed, will be expressly understood above and other objects of the present invention, feature and other advantage more.In the accompanying drawings:
Fig. 1 is the figure of expression according to the structure of cycle frame of the present invention;
Fig. 2 is the figure of person in charge bottom of the vehicle frame of presentation graphs 1;
Fig. 3 is the figure of clamper of the vehicle frame of presentation graphs 1;
Fig. 4 is the figure of last vehicle seat equilibrium arm of the vehicle frame of presentation graphs 1;
Fig. 5 is the figure of following vehicle seat equilibrium arm of the vehicle frame of presentation graphs 1; And
Fig. 6 is the figure of vehicle seat support unit of the vehicle frame of presentation graphs 1.
The specific embodiment
Describe embodiments of the invention below with reference to the accompanying drawings in detail.
In below will the accompanying drawing of reference, identical reference number be used to represent same or analogous part in all different accompanying drawings.
Fig. 1 is the figure of expression according to the structure of cycle frame of the present invention, Fig. 2 is the figure of person in charge bottom of the vehicle frame of presentation graphs 1, Fig. 3 is the figure of clamper of the vehicle frame of presentation graphs 1, Fig. 4 is the figure of last vehicle seat equilibrium arm of the vehicle frame of presentation graphs 1, Fig. 5 is the figure of following vehicle seat equilibrium arm of the vehicle frame of presentation graphs 1, and Fig. 6 is the figure of vehicle seat support unit of the vehicle frame of presentation graphs 1.According to the present invention, be responsible for 10 and be connected on the trailing wheel support unit 20 by wheel balance arm 30.Vehicle seat support unit 40 is connected to by upper and lower vehicle seat equilibrium arm 51 and 52 and is responsible on 10, to form the connection structure of parallelogram.And vehicle frame 100 of the present invention comprises elastic support unit 60, and each elastic support unit 60 all is connected on the person in charge 10, trailing wheel support unit 20 and the vehicle seat support unit 40.
The person in charge 10 function is a support frame 100.As shown in Figure 1, be responsible for 10 and be connected to integral body with handle strut bar 70 in the top, and handle and suspension (not shown) also are connected on the handle strut bar 70.Being connected to linkage unit 11 on the chain drive unit 200 is positioned at and is responsible for 10 lower end.And jack 12 is integrally formed on the outside face of linkage unit 11, and under shed, thereby each elastic support unit 60 all is inserted in the corresponding jack 12.On the person in charge 10 lower surface, have towards ground-surface clamper 13.
The function of clamper 13 is ends of each elastic support unit 60 of clamping.As shown in Figure 3, clamper 13 is fitted together with the person in charge 10, and comprises first holder 131 and second holder 132 with semi-circular recesses 131a.Second holder 132 has semi-circular recesses 132a, and by bolted to first holder 131.When first and second holders 131 and 132 utilize bolt secured to one another together the time, each semi-circular recesses 132a of each the semi-circular recesses 131a of first holder 131 and second holder 132 forms circular port.The end of each elastic support unit 60 all is inserted in semi-circular recesses 131a and the formed circular port of 132a.And, in each groove 131a and 132a, all having compression piece 133, compression piece 133 is made by materials such as rubber, nonwoven fabrics, synthetic resin, so that it has elasticity.Compression piece 133 is clamped in the clamper 13 end of each elastic support unit 60 more firmly.
Each jack 12 all is integrally formed in the lower end of linkage unit 11, and has locations 121, is used for each elastic support unit 60 all is fixed on preposition.
The function of wheel balance arm 30 is trailing wheel support unit 20 to be connected to be responsible on 10.As shown in Figure 1, an end of wheel balance arm 30 is hinged on to be responsible on 10, and the other end integral body of wheel balance arm 30 is connected on the trailing wheel support unit 20.Wheel balance arm 30 comprises two wheel balance arms 30, and it is positioned at the relative both sides of trailing wheel 400.That is, the structure of bicycle is that two trailing wheel support units 20 lay respectively at the relative both sides of the core of trailing wheel 400.Like this, all whole end that is connected each wheel balance arm 30 of each trailing wheel support unit 20.And the other end of each wheel balance arm 30 all is hinged on each side of being responsible for 10 both sides.
Each trailing wheel support unit 20 is all supporting the hub spindle (not shown) of trailing wheel 400.Vertically hole 21 is positioned at the bottom of each trailing wheel support unit 20, thereby the hub spindle of trailing wheel 400 is inserted in vertical hole 21.And each trailing wheel support unit 20 all has support 22, is used to support the centre portion of each elastic support unit 60.Each support 22 all utilizes fastening unit, as bolt, is fastened on the trailing wheel support unit 20.
Vehicle seat support unit 40 comprises and vehicle seat bonded assembly vehicle seat supporting bracket 41, with upper and lower vehicle seat equilibrium arm 51 and 52 bonded assembly arm supporting brackets 42, and the supporting projections 43 that is integrally formed in arm supporting bracket 42 1 sides, it is used for support elastic support unit 60.Insert in the arm supporting bracket 42 bottom of vehicle seat supporting bracket 41, and each elastic support unit 60 is all passed supporting projections 43.
And vehicle seat supporting bracket 41 utilizes bolted on arm supporting bracket 42.Between vehicle seat supporting bracket 41 and arm supporting bracket 42, have compression piece (not shown), compression piece be by materials such as rubber, nonwoven fabrics, synthetic resin make so that it has elasticity.When vehicle seat supporting bracket 41 utilizes bolted on arm supporting bracket 42, compression piece compression vehicle seat supports support 41, thus vehicle seat supporting bracket 41 can more securely be fixed on the desired position.
In having the vehicle seat support unit 40 of aforesaid structure, the upper and lower end of arm supporting bracket 42 is connected to by upper and lower vehicle seat equilibrium arm 51 and 52 respectively and is responsible on 10.Each elastic support unit 60 is all supported by the supporting projections 43 of arm supporting bracket 42, and vehicle seat is fixed on the desired location by vehicle seat supporting bracket 41 and arm supporting bracket 42.
The arm supporting bracket 42 of vehicle seat support unit 40, the person in charge 10 and upper and lower vehicle seat equilibrium arm 51 and 52 connect into parallelogram sturcutre.Be hinged on the person in charge 10 by upper and lower vehicle seat equilibrium arm 51 and 52, this connection structure makes that the arm supporting bracket 42 of vehicle seat support unit 40 can perpendicular movement in the keeping parallelism state.That is, when vibration occurring, can perpendicular movement when keeping level by the vehicle seat that vehicle seat supporting bracket 41 supports.
Last vehicle seat equilibrium arm 51 is connected to the upper end of the arm supporting bracket 42 of vehicle seat support unit 40 on the person in charge 10.As shown in figs. 1 and 4, last vehicle seat equilibrium arm 51 comprises the U-shaped pipe bracket 511 of the centre portion that is hinged on the person in charge 10, and the adaptor union 512 that is hinged on arm supporting bracket 42 tops.
And following vehicle seat equilibrium arm 52 is connected to the lower end of the arm supporting bracket 42 of vehicle seat support unit 40 on the person in charge 10.Shown in Fig. 1 and 5, following vehicle seat equilibrium arm 52 is mounted to and is parallel to vehicle seat equilibrium arm 51, and comprise and be hinged on the U-shaped pipe bracket 521 of being responsible for 10 centre portion, and the U-shaped articulated stand 523 that is hinged on arm supporting bracket 42 bottoms, and the adaptor union 522 that connects articulated stand 523 and pipe bracket 521.
That is, upper and lower vehicle seat equilibrium arm 51 and 52 hingedly is connected on the arm supporting bracket 42 three positions.The lower end that is fastened on the vehicle seat supporting bracket 41 on the arm supporting bracket 42 is positioned in the space in the U-shaped articulated stand 523.
Each elastic support unit 60 all sequentially is connected the person in charge 10, trailing wheel support unit 20, vehicle seat support unit 40 and is responsible on 10, thereby absorbs impact and support the load that the cyclist applies.First end of each elastic support unit 60 is all by clamper 13 clampings of being responsible for 10, and the centre portion of each elastic support unit 60 all passes the corresponding jack 12 that is positioned at the person in charge 10 lower ends.The other centre portion of each elastic support unit 60 all utilizes support 22 to be supported by trailing wheel support unit 20, and the other centre portion of each elastic support unit 60 is all supported by the supporting projections 43 of vehicle seat support unit 40.Second end of each elastic support unit 60 all is connected and is positioned on the installation unit of being responsible on 10 the predetermined portions 14.That is, the opposite end of each elastic support unit 60 all is connected on the person in charge 10 the clamper 13 and installation unit 14.Each elastic support unit 60 after the corresponding jack 12 that passes the person in charge 10, on its desired location, is connected on trailing wheel support unit 20 and the vehicle seat support unit 40.
Elastic support unit 60 comprises two elastic support unit 60, and they are positioned at the relative both sides of the core of trailing wheel 400.Each elastic support unit 60 is crooked on its a plurality of parts, thereby forms U-shaped.Such shape makes each elastic support unit 60 can closely contact a plurality of parts farthest to absorb impact.In detailed description, the part of each elastic support unit 60 between trailing wheel support unit 20 and vehicle seat support unit 40 is crooked, and each elastic support unit 60 is parallel with 52 with upper and lower vehicle seat equilibrium arm 51 at a vehicle seat support unit 40 and the part be responsible between 10 the installation unit 14.The vibration of the vertical direction that such structure is produced when making each elastic support unit 60 farthest absorb by bike.
As mentioned above, handle strut bar 70, the pipe bracket 511 of going up vehicle seat equilibrium arm 51, the installation unit 14 that supports each elastic support unit 60 end, the pipe bracket 521 of following vehicle seat equilibrium arm 52 and the end of wheel balance arm 30, along being responsible on 10 from being responsible for 10 top direction, sequentially being connected to the bottom.
According to the present invention, the hub spindle of front-wheel 300 is supported by each suspension that is connected on the handle strut bar 70.The hub spindle of trailing wheel 400 and driving device 500 are connected on the trailing wheel support unit 20 of the centre portion that supports each elastic support unit 60.And chain drive unit 200 is connected on the linkage unit 11 of being responsible for 10 lower ends, is responsible for the centre portion of 10 each elastic support unit 60 of support.Like this, trailing wheel 400 is by the drive force of chain, and front-wheel 300 is then controlled by signaling handle.
Passing through the boundary stone between uneven part, footway and the road on metal road, rugged road, road when the bicycle of said structure, and under other situation, generation vibration or impact, vehicle seat support unit 40 are in the effect lower compression elastic support unit 60 of vibration or impact, and the while up-and-down movement.At this moment, by the parallelogram connection structure, be contained in the vehicle seat up-and-down movement in the maintenance level on the vehicle seat support unit, thereby prevent that the cyclist from bouncing up and down.And elastic support unit 60 can automatically absorb vertical shake or impact.
In simple terms, the part of each elastic support unit 60 between the trailing wheel support unit 20 and the person in charge 10 fixed, thereby the part of each elastic support unit 60 between the vehicle seat support unit 40 and the person in charge 10, can be with respect to the sweep up-and-down movement of each elastic support unit 60 between trailing wheel support unit 20 and vehicle seat support unit 40, thus the impact that is delivered to bicycle can automatically be absorbed.
Though disclosed the preferred embodiments of the present invention for illustrative purposes, one of ordinary skill in the art should be appreciated that and can make different modifications, increases and substitute under the condition that does not depart from the scope and spirit of the present invention and defined in the claim.
As mentioned above, structure of the present invention can automatically absorb impact or the vibration that is delivered to bicycle front-wheel and trailing wheel, thereby allows cosily and safely to drive bicycle, thereby has also guaranteed cyclist's safety.
And the major part of cycle frame comprises elastic support unit, thereby reduces the weight of bicycle, and will impact or vibrate and be distributed on the bicycle, thereby strengthens impact absorption efficient.
And connection structure of the present invention allows vehicle seat up-and-down movement when keeping level, thereby helps to drive safely bicycle, and prevents that the cyclist from being impacted or vibrating.
And, the part of bicycle hinged or by bolted on predetermined portions, thereby the easy assembly and disassembly of part.Because bicycle of the present invention has simple structure, thus can be owing to defective welding method does not obtain defective product, and assembling cycle shortens.In addition, parts/maintenance is easy, and the manufacturing cost of bicycle reduces, and capacity rating and manufacturing capacity improve.

Claims (3)

1. the frame for reducing vibration of a bicycle comprises:
Be responsible for, the described person in charge integrally is connected on the handle strut bar in the top, and its lower end is connected on the chain drive unit;
The wheel balance arm, described wheel balance arm is hinged on the person in charge's the predetermined portions at its first end, integrally is connected at its second end on the trailing wheel support unit that supports trailing wheel;
Last vehicle seat equilibrium arm, the described vehicle seat equilibrium arm of going up is hinged at its end on the person in charge's the predetermined portions, and described predetermined portions is between the wheel balance arm and the person in charge's handle strut bar;
Following vehicle seat equilibrium arm, described vehicle seat equilibrium arm down is hinged at its end on the person in charge's the predetermined portions, and described vehicle seat equilibrium arm down is positioned at the below of vehicle seat equilibrium arm, and is parallel with last vehicle seat equilibrium arm;
The vehicle seat support unit, described vehicle seat support unit is connected on the vehicle seat, is used for supporting seat, and described vehicle seat support unit is hinged on the vehicle seat equilibrium arm at an upper portion thereof, and is hinged on the following vehicle seat equilibrium arm in its underpart; And
Elastic support unit, first end of described elastic support unit is fastened on the person in charge's the lower surface, towards ground, the first of elastic support unit is connected on the trailing wheel support unit by support, the second portion of elastic support unit is by the vehicle seat support unit supports, second end of elastic support unit is connected on the person in charge's the installation unit, wherein be connected the predetermined portions up-and-down movement of the elastic support unit on the vehicle seat support unit, thereby will be delivered to the vibration or the impact absorption of vehicle frame by front-wheel and trailing wheel.
2. frame for reducing vibration as claimed in claim 1, wherein the arm supporting bracket of vehicle seat support unit, upper and lower equilibrium arm and the person in charge connect into the parallelogram connection structure.
3. frame for reducing vibration as claimed in claim 1, wherein the vehicle seat support unit comprises:
Be connected to the vehicle seat supporting bracket of vehicle seat;
Be connected to the arm supporting bracket of upper and lower vehicle seat equilibrium arm; And
Supporting projections, described supporting projections is integrally formed on the predetermined portions of arm supporting bracket, is used for the support elastic support unit.
CNA2004100568092A 2004-05-25 2004-08-20 Bicycle vibration-damping carriage Pending CN1702012A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040037102 2004-05-25
KR1020040037102A KR100555143B1 (en) 2004-05-25 2004-05-25 Body frame of bicycle for shock absorbing

Publications (1)

Publication Number Publication Date
CN1702012A true CN1702012A (en) 2005-11-30

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ID=35632015

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2004100568092A Pending CN1702012A (en) 2004-05-25 2004-08-20 Bicycle vibration-damping carriage

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KR (1) KR100555143B1 (en)
CN (1) CN1702012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103419882A (en) * 2012-05-15 2013-12-04 陆中源 Hand-foot push-and-pull bicycle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60219184A (en) 1984-04-14 1985-11-01 柳沢 雄造 Car body for motorcycle
US5417445A (en) 1988-04-08 1995-05-23 Smart; David G. Cycles
US6543799B2 (en) 2000-01-13 2003-04-08 Shimano Inc. Bicycle suspension
US6283487B1 (en) 2000-04-25 2001-09-04 Robert Torre Parallelogram bicycle suspension system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103419882A (en) * 2012-05-15 2013-12-04 陆中源 Hand-foot push-and-pull bicycle

Also Published As

Publication number Publication date
KR100555143B1 (en) 2006-02-24
KR20050112190A (en) 2005-11-30

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