CN103486191A - Automatic variable damping front shock absorber of motorcycle capable of vibrating along with ups and downs of road surface - Google Patents

Automatic variable damping front shock absorber of motorcycle capable of vibrating along with ups and downs of road surface Download PDF

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Publication number
CN103486191A
CN103486191A CN201310471696.1A CN201310471696A CN103486191A CN 103486191 A CN103486191 A CN 103486191A CN 201310471696 A CN201310471696 A CN 201310471696A CN 103486191 A CN103486191 A CN 103486191A
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Prior art keywords
throttle orifice
cross
motorcycle
unit
section area
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徐波
刘嘉佳
徐涌
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CHONGQING RUIAO ELECTROMECHANICAL DEVICE Co Ltd
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CHONGQING RUIAO ELECTROMECHANICAL DEVICE Co Ltd
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Abstract

The invention provides an automatic variable damping front shock absorber of a motorcycle capable of vibrating along with ups and downs of a road surface to guarantee the comfort and the safety of motorcycle driving as much as possible and to accurately set the maximum cross sectional area and the cross sectional area change rate of a throttling groove of the automatic variable damping front shock absorber. The automatic variable damping front shock absorber comprises a base barrel, a fork pipe assembly, a damping spring, a positioning pipe, check valves, oil passing holes and a lower piston of the fork pipe assembly, a throttling hole is composed of a diameter-adjustable structure, and the maximum cross sectional area, the minimum cross sectional area and the cross sectional area change rate of the throttling groove are set according to the motorcycle, the loading weight, the solid load of the damping spring, the travel of the piston and the cross sectional area of the piston. The automatic variable damping front shock absorber has the advantages that the maximum cross sectional area and the cross sectional area change rate of the throttling groove of the automatic variable damping front shock absorber are accurately set, and the comfort and the safety of motorcycle driving are guaranteed to the maximum degree.

Description

With the road vibration automatic damping-adjusting front damper for motorcycle
?
Technical field
The present invention relates to a kind of motorcycle vibration absorber technology, specially refer to a kind of with the road vibration automatic damping-adjusting front damper for motorcycle.
Background technique
Travelling comfort and the Security of for improving motorcycle, driving, most of motorcycles have all configured forward and backward vibration damper, the impact of the vibrations that cause with the minimizing Uneven road on motorcycle and driver and passenger.The vibration damping mode that the vibration damper of prior art motorcycle mostly adopts spring to combine with hydraulic damping, the vibration energy in absorption and consumption motorcycle driving process.The vibration damping mode that so-called spring combines with hydraulic damping refers to and both be provided with damping spring in vibration damper, be provided with again hydraulic damping mechanism, damping spring is mainly used in resisting the vibrations that inertia-gravity causes, and hydraulic damping mechanism is mainly used in resisting damping spring and replys the secondary vibrations that cause.So-called hydraulic damping mechanism refers to the hydraulic system that is arranged on vibration damper inside, comprises piston, one-way valve and throttle orifice, and when the compressed while of damping spring, piston moves downward with damping spring, one-way valve opens, and hydraulic oil flows to and is full of damping cavity; When damping spring resets, piston moves upward with damping spring, closed check valve, hydraulic oil in damping cavity can only reflux from throttle orifice, make damping spring to reset immediately, but reset gradually along with the backflow gradually of hydraulic oil, avoided the secondary vibrations.Obviously, the size of throttle orifice has determined the reset speed of damping spring, and the reset speed of the larger damping spring of throttle orifice is faster, otherwise slower.The throttle orifice size of early stage motorcycle vibration absorber hydraulic damping mechanism is fixed, no matter how much compressed this vibration damper shock-absorbing spring is, its reset speed is all the same.Obviously, the damping effect of this vibration damper is very limited, directly has influence on travelling comfort and Security that motorcycle is driven.Patent application 201010518093.9 has proposed a kind of motorcycle automatic damping-changing front shock absorber and preparation method thereof, the throttle orifice of this vibration damper can change with the compression degree of damping spring, when the compression degree of damping spring is larger, throttle orifice is less, and damping spring resets with slower speed; When the compression degree of damping spring hour, throttle orifice is larger, damping spring is replied with speed faster.This vibration damper can reach comparatively desirable damping effect, when the compressed degree of damping spring hour, damping spring is replied to recover as early as possible the situation of smooth-ride with speed faster; When the compressed degree of damping spring is larger, damping spring replys to avoid causing the secondary vibrations with slower speed.Patent ZL201110336282.9 has further proposed definite method of this automatic variable damping front shock absorber throttle orifice the maximum cross-section area and throttle orifice cross-section variation rate, adopts motorcycle and load weight as unique definite factor of determining throttle orifice the maximum cross-section area and throttle orifice cross-section variation rate.While being given a shock due to motorcycle, it shakes wave amplitude, except with motorcycle and load weight mutually outside the Pass, also directly relevant with the shock absorber piston sectional area to the stroke of the solid load of damping spring and vibration damper.The solid load of damping spring directly has influence on the reset speed of when being given a shock compressed degree and damping spring.In the situation that shockproofness is identical with the throttle orifice size, the damping spring that solid load is larger, its compressed degree will be less, and reset speed will be very fast; Otherwise compressed degree will be larger, and reset speed will be slower.The stroke of vibration damper directly has influence on throttle orifice cross-section variation rate, the vibration damper that stroke is less, and its throttle orifice cross-section variation rate will be larger; Otherwise throttle orifice cross-section variation rate will be less.The shock absorber piston sectional area is directly related with the size of damping cavity volume, while compressing to damping spring, enter damping cavity hydraulic pressure oil mass the number relevant, when damping cavity hydraulic pressure oil mass is more, hydraulic oil should reflux with comparatively faster speed; Otherwise, should reflux with slower speed.Aforementioned techniques does not consider that the damping spring solid load is on the compression degree of damping spring and the impact of reset speed, do not consider the impact of vibration damper stroke on throttle orifice cross-section variation rate, do not consider the impact of shock absorber piston sectional area on the hydraulic oil back-flow velocity, determine throttle orifice the maximum cross-section area and throttle orifice cross-section variation rate with the method, and the front damper of motorcycle made from this not necessarily can be realized best damping effect.Obviously, the prior art motorcycle automatic damping-changing front shock absorber exists and does not consider the long-pending problems such as impact on throttle orifice the maximum cross-section area and throttle orifice cross-section variation rate of damping spring solid load, vibration damper stroke and piston cross-section.
Summary of the invention
For do not consider damping spring solid load, vibration damper stroke and the piston cross-section that solves the existence of prior art motorcycle automatic damping-changing front shock absorber amasss the problems such as impact on throttle orifice the maximum cross-section area and throttle orifice cross-section variation rate, the present invention proposes a kind of with the road vibration automatic damping-adjusting front damper for motorcycle.The present invention, with the road vibration automatic damping-adjusting front damper for motorcycle, comprising: the lower piston of end cylinder, breeches pipe assembly, damping spring, positioning pipe, one-way valve, oil through and breeches pipe assembly; Adopt variable-diameter structure to form throttle orifice, be that the positioning pipe external diameter diminishes from the oil through upper end gradually until positioning pipe top, size axially the diminishing gradually from top to bottom along positioning pipe of the throttle orifice cross-section area that positioning pipe cylindrical and breeches pipe assembly lower piston inner circle are formed, and set throttle orifice the maximum cross-section area, throttle orifice minimum sectional area and throttle orifice cross-section variation rate according to motorcycle and load weight, damping spring solid load, piston stroke and piston cross-section area, wherein
Adopt formula
Figure 2013104716961100002DEST_PATH_IMAGE002
calculate the throttle orifice the maximum cross-section area ; Adopt formula
Figure 2013104716961100002DEST_PATH_IMAGE006
calculate the throttle orifice smallest cross-section area
Figure 2013104716961100002DEST_PATH_IMAGE008
; Adopt formula
Figure 2013104716961100002DEST_PATH_IMAGE010
calculate throttle orifice cross-section variation rate
Figure 2013104716961100002DEST_PATH_IMAGE012
; In formula, F is benchmark piston cross-section area, and unit is mm 2; The weight that W is benchmark motorcycle and load, units/kg; T is benchmark damping spring solid load, and unit is N; L is the benchmark piston stroke, and unit is mm;
Figure 2013104716961100002DEST_PATH_IMAGE014
for the design piston stroke, unit is mm;
Figure 2013104716961100002DEST_PATH_IMAGE016
with
Figure 2013104716961100002DEST_PATH_IMAGE018
be respectively COEFFICIENT K 1and K 2correction value, unit is Nmm/kg;
And massage motorcycle vehicle classification is calculated respectively, and according to the design load of parameter W, F, T and L respectively to COEFFICIENT K 1and K 2revised; Wherein,
According to following formula design factor K 1and K 2correction value
Figure 342720DEST_PATH_IMAGE016
with
Figure 262747DEST_PATH_IMAGE018
:
Figure 572505DEST_PATH_IMAGE016
＝
Figure 2013104716961100002DEST_PATH_IMAGE020
＋
Figure 456279DEST_PATH_IMAGE018
＝
Figure 2013104716961100002DEST_PATH_IMAGE024
＋
Figure 2013104716961100002DEST_PATH_IMAGE026
In formula,
Figure 385051DEST_PATH_IMAGE020
with be respectively COEFFICIENT K 1and K 2reference value, α k 1with α k 2be respectively COEFFICIENT K 1and K 2correction value, △ W, △ F, △ T and △ L are respectively the design load of parameter W, F, T and L and the difference of reference value, α w, α f, α t and α l are respectively the adjusted value of parameter W, F, T and L; When calculating △ W, △ F, △ T and △ L, if the design load of parameter W, F is larger than reference value, or the design load of parameter T, L is less than reference value, gets positive number; Otherwise, get negative;
Reference value and the adjusted value of different classes of motorcycle parameter W, F, T and L, and COEFFICIENT K 1and K 2reference value and correction value as shown in the table;
Figure 2013104716961100002DEST_PATH_IMAGE028
Described throttle orifice the maximum cross-section area
Figure 2013104716961100002DEST_PATH_IMAGE030
, unit is mm 2; Described throttle orifice smallest cross-section area
Figure 2013104716961100002DEST_PATH_IMAGE032
, unit is mm 2; In formula, D is circular diameter in breeches pipe assembly lower piston, and unit is mm; D 2for positioning pipe restriction portion maximum diameter, D 1for positioning pipe restriction portion minimum diameter, unit is mm; Described throttle orifice cross-section variation rate refer to the changing value of damper shaft to unit length throttle orifice cross-section area, unit is mm 2/ mm.
The present invention is the maximum cross-section area, throttle orifice smallest cross-section area and the throttle orifice cross-section variation rate of accurately setting the throttle orifice of automatic variable damping front shock absorber with the useful technique effect of road vibration automatic damping-adjusting front damper for motorcycle, farthest guarantees travelling comfort and the Security of motor cycle rider's.
The accompanying drawing explanation
Accompanying drawing 1 is that the present invention is with road vibration automatic damping-adjusting front damper for motorcycle structural representation;
Accompanying drawing 2 is A-A sectional views of accompanying drawing 1, and positioning pipe and breeches pipe assembly lower piston form the schematic diagram of throttle orifice.
Below in conjunction with the drawings and specific embodiments, the present invention is further described with the road vibration automatic damping-adjusting front damper for motorcycle.
Embodiment
Accompanying drawing 1 be the present invention with road vibration automatic damping-adjusting front damper for motorcycle structural representation, accompanying drawing 2 is A-A sectional views of accompanying drawing 1, positioning pipe and breeches pipe assembly lower piston form the schematic diagram of throttle orifice.In figure, the 1st, end cylinder, the 2nd, breeches pipe assembly, the 3rd, damping spring, the 4th, positioning pipe, the 5th, one-way valve, the 7th, oil through, the 8th, the lower piston of breeches pipe assembly, the 9th, the throttle orifice that positioning pipe and breeches pipe assembly lower piston form.As seen from the figure, the present invention, with the road vibration automatic damping-adjusting front damper for motorcycle, comprising: the lower piston 8 of end cylinder 1, breeches pipe assembly 2, damping spring 3, positioning pipe 4, one-way valve 5, oil through 7 and breeches pipe assembly; Adopt variable-diameter structure to form throttle orifice 9, be that positioning pipe 4 external diameters diminish from the oil through upper end gradually until positioning pipe top, size axially the diminishing gradually from top to bottom along positioning pipe of throttle orifice 9 cross-section areas that positioning pipe 4 cylindricals and breeches pipe assembly lower piston 8 inner circles are formed, and set throttle orifice the maximum cross-section area, throttle orifice minimum sectional area and throttle orifice cross-section variation rate according to motorcycle and load weight, damping spring solid load, piston stroke and piston cross-section area, wherein
Adopt formula calculate the throttle orifice the maximum cross-section area
Figure 558094DEST_PATH_IMAGE004
; Adopt formula
Figure 190064DEST_PATH_IMAGE006
calculate the throttle orifice smallest cross-section area ; Adopt formula
Figure 824624DEST_PATH_IMAGE010
calculate throttle orifice cross-section variation rate
Figure 157517DEST_PATH_IMAGE012
; In formula, F is benchmark piston cross-section area, and unit is mm 2; The weight that W is benchmark motorcycle and load, units/kg; T is benchmark damping spring solid load, and unit is N; L is the benchmark piston stroke, and unit is mm;
Figure 643993DEST_PATH_IMAGE014
for the design piston stroke, unit is mm;
Figure 669718DEST_PATH_IMAGE016
with
Figure 871504DEST_PATH_IMAGE018
be respectively COEFFICIENT K 1and K 2correction value, unit is Nmm/kg;
And massage motorcycle vehicle classification is calculated respectively, and according to the design load of parameter W, F, T and L respectively to COEFFICIENT K 1and K 2revised; Wherein,
According to following formula design factor K 1and K 2correction value
Figure 70405DEST_PATH_IMAGE016
with
Figure 411387DEST_PATH_IMAGE018
:
Figure 608013DEST_PATH_IMAGE016
＝
Figure 300026DEST_PATH_IMAGE020
＋
Figure 498106DEST_PATH_IMAGE018
＝
Figure 865633DEST_PATH_IMAGE024
＋
Figure 779363DEST_PATH_IMAGE026
In formula,
Figure 257749DEST_PATH_IMAGE020
with
Figure 901220DEST_PATH_IMAGE024
be respectively COEFFICIENT K 1and K 2reference value, α k 1with α k 2be respectively COEFFICIENT K 1and K 2correction value, △ W, △ F, △ T and △ L are respectively the design load of parameter W, F, T and L and the difference of reference value, α w, α f, α t and α l are respectively the adjusted value of parameter W, F, T and L; When calculating △ W, △ F, △ T and △ L, if the design load of parameter W, F is larger than reference value, or the design load of parameter T, L is less than reference value, gets positive number; Otherwise, get negative;
Reference value and the adjusted value of different classes of motorcycle parameter W, F, T and L, and COEFFICIENT K 1and K 2reference value and correction value as shown in the table;
Figure DEST_PATH_IMAGE033
Described throttle orifice the maximum cross-section area
Figure 114682DEST_PATH_IMAGE030
, unit is mm 2; Described throttle orifice smallest cross-section area
Figure 781287DEST_PATH_IMAGE032
, unit is mm 2; In formula, D is circular diameter in breeches pipe assembly lower piston, and unit is mm; D 2for positioning pipe restriction portion maximum diameter, D 1for positioning pipe restriction portion minimum diameter, unit is mm; Described throttle orifice cross-section variation rate
Figure 860101DEST_PATH_IMAGE012
refer to the changing value of damper shaft to unit length throttle orifice cross-section area, unit is mm 2/ mm.
Embodiment 1
Certain pedal class motorcycle, design motorcycle and load weight W are that 170kg, piston area F are 200mm 2, spring solid load T is 600N, piston stroke L is 60mm, with the reference value of pedal class motorcycle in upper table, compares, the design load of W, F is larger than reference value, the design load of L is less than reference value, gets positive number; The design load of T is larger than reference value, gets negative; :
＝ ＋
Figure 893413DEST_PATH_IMAGE022
＝2.182+0.089
Figure DEST_PATH_IMAGE035
＝2.415（N·mm/kg）
Figure 713602DEST_PATH_IMAGE018
＝
Figure 3769DEST_PATH_IMAGE024
＋
Figure 881070DEST_PATH_IMAGE026
＝5.414+0.167
Figure 256688DEST_PATH_IMAGE035
＝5.554（N·mm/kg）
Figure 677305DEST_PATH_IMAGE002
＝
Figure DEST_PATH_IMAGE037
＝1.915（mm 2）
Figure 25241DEST_PATH_IMAGE006
＝
Figure DEST_PATH_IMAGE039
＝0.883（mm 2）
Figure 810794DEST_PATH_IMAGE010
＝ ＝0.0172（mm 2/mm）。
Embodiment 2
Certain go-anywhere vehicle class motorcycle, design motorcycle and load weight W are that 310kg, piston area F are 500mm 2, spring solid load T is 1300, piston stroke L is 200mm, with the reference value of cross-country class motorcycle in upper table, compares, the design load of W, F is larger than reference value, gets positive number; T, L design load are larger than reference value, get negative; :
Figure 611391DEST_PATH_IMAGE016
＝
Figure 773382DEST_PATH_IMAGE020
＋
Figure 29352DEST_PATH_IMAGE022
＝11.772+0.362
Figure DEST_PATH_IMAGE043
＝12.076（N·mm/kg）
Figure 251386DEST_PATH_IMAGE018
＝
Figure 601596DEST_PATH_IMAGE024
＋
Figure 301699DEST_PATH_IMAGE026
＝3.705+0.103
Figure 483282DEST_PATH_IMAGE043
＝3.891；
Figure 876217DEST_PATH_IMAGE002
＝ ＝7.294（mm 2）
Figure 651406DEST_PATH_IMAGE006
＝
Figure DEST_PATH_IMAGE047
＝2.350（mm 2）
Figure 155200DEST_PATH_IMAGE010
＝ ＝0.0247（mm 2/mm）。
Obviously, the present invention is the maximum cross-section area, throttle orifice smallest cross-section area and the throttle orifice cross-section variation rate of accurately setting the throttle orifice of automatic variable damping front shock absorber with the useful technique effect of road vibration automatic damping-adjusting front damper for motorcycle, farthest guarantees travelling comfort and the Security of motor cycle rider's.

Claims (1)

1. one kind with the road vibration automatic damping-adjusting front damper for motorcycle, comprising: the lower piston of end cylinder, breeches pipe assembly, damping spring, positioning pipe, one-way valve, oil through and breeches pipe assembly; Adopt variable-diameter structure to form throttle orifice, be that the positioning pipe external diameter diminishes from the oil through upper end gradually until positioning pipe top, size axially the diminishing gradually from top to bottom along positioning pipe of the throttle orifice cross-section area that positioning pipe cylindrical and breeches pipe assembly lower piston inner circle are formed, it is characterized in that: according to motorcycle and load weight, damping spring solid load, piston stroke and piston cross-section area, set throttle orifice the maximum cross-section area, throttle orifice minimum sectional area and throttle orifice cross-section variation rate, wherein
Adopt formula
Figure 2013104716961100001DEST_PATH_IMAGE002
calculate the throttle orifice the maximum cross-section area
Figure 2013104716961100001DEST_PATH_IMAGE004
; Adopt formula calculate the throttle orifice smallest cross-section area
Figure 2013104716961100001DEST_PATH_IMAGE008
; Adopt formula
Figure 2013104716961100001DEST_PATH_IMAGE010
calculate throttle orifice cross-section variation rate
Figure 2013104716961100001DEST_PATH_IMAGE012
; In formula, F is benchmark piston cross-section area, and unit is mm 2; The weight that W is benchmark motorcycle and load, units/kg; T is benchmark damping spring solid load, and unit is N; L is the benchmark piston stroke, and unit is mm;
Figure 2013104716961100001DEST_PATH_IMAGE014
for the design piston stroke, unit is mm;
Figure 2013104716961100001DEST_PATH_IMAGE016
with
Figure 2013104716961100001DEST_PATH_IMAGE018
be respectively COEFFICIENT K 1and K 2correction value, unit is Nmm/kg;
And massage motorcycle vehicle classification is calculated respectively, and according to the design load of parameter W, F, T and L respectively to COEFFICIENT K 1and K 2revised; Wherein,
According to following formula design factor K 1and K 2correction value
Figure 611088DEST_PATH_IMAGE016
with
Figure 237242DEST_PATH_IMAGE018
:
Figure 562044DEST_PATH_IMAGE016
＝
Figure 2013104716961100001DEST_PATH_IMAGE020
＋
Figure 2013104716961100001DEST_PATH_IMAGE022
Figure 479316DEST_PATH_IMAGE018
＝
Figure 2013104716961100001DEST_PATH_IMAGE024
＋
Figure 2013104716961100001DEST_PATH_IMAGE026
In formula,
Figure 510857DEST_PATH_IMAGE020
with
Figure 242665DEST_PATH_IMAGE024
be respectively COEFFICIENT K 1and K 2reference value, α k 1with α k 2be respectively COEFFICIENT K 1and K 2correction value, △ W, △ F, △ T and △ L are respectively the design load of parameter W, F, T and L and the difference of reference value, α w, α f, α t and α l are respectively the adjusted value of parameter W, F, T and L; When calculating △ W, △ F, △ T and △ L, if the design load of parameter W, F is larger than reference value, or the design load of parameter T, L is less than reference value, gets positive number; Otherwise, get negative;
Reference value and the adjusted value of different classes of motorcycle parameter W, F, T and L, and COEFFICIENT K 1and K 2reference value and correction value as shown in the table;
Described throttle orifice the maximum cross-section area
Figure 2013104716961100001DEST_PATH_IMAGE030
, unit is mm 2; Described throttle orifice smallest cross-section area
Figure 2013104716961100001DEST_PATH_IMAGE032
, unit is mm 2; In formula, D is circular diameter in breeches pipe assembly lower piston, and unit is mm; D 2for positioning pipe restriction portion maximum diameter, D 1for positioning pipe restriction portion minimum diameter, unit is mm; Described throttle orifice cross-section variation rate
Figure 664550DEST_PATH_IMAGE012
refer to the changing value of the axial unit length throttle orifice of vibration damper cross-section area, unit is mm 2/ mm.
CN201310471696.1A 2013-10-11 2013-10-11 Automatic variable damping front shock absorber of motorcycle capable of vibrating along with ups and downs of road surface Pending CN103486191A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104747650A (en) * 2015-01-21 2015-07-01 杨富云 Shock absorbing method and shock absorber thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004036871A (en) * 2002-07-02 2004-02-05 Reiko Koganei Semiactive hydraulic shock absorber
CN101956781A (en) * 2010-10-25 2011-01-26 重庆瑞翱机电设备有限公司 Damp self-regulating front damper of motorcycle and manufacturing method thereof
CN102352908A (en) * 2011-10-31 2012-02-15 重庆瑞翱机电设备有限公司 Motorcycle automatic damping-changing front shock absorber damper
JP2013108579A (en) * 2011-11-22 2013-06-06 Kyb Co Ltd Damping valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004036871A (en) * 2002-07-02 2004-02-05 Reiko Koganei Semiactive hydraulic shock absorber
CN101956781A (en) * 2010-10-25 2011-01-26 重庆瑞翱机电设备有限公司 Damp self-regulating front damper of motorcycle and manufacturing method thereof
CN102352908A (en) * 2011-10-31 2012-02-15 重庆瑞翱机电设备有限公司 Motorcycle automatic damping-changing front shock absorber damper
JP2013108579A (en) * 2011-11-22 2013-06-06 Kyb Co Ltd Damping valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104747650A (en) * 2015-01-21 2015-07-01 杨富云 Shock absorbing method and shock absorber thereof

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