TW418166B - Electronic suspension system for a vehicle - Google Patents

Abstract

A responsive, hydraulic suspension system for a wheeled vehicle is disclosed. The system utilizes an on-board damper controller, a damper, a motor-adjusted damper valve, and a switch for controlling dampening performance. The rider can change the damping performance by actuating the switch which dictates whether the suspension system is activated or deactivated based on the position of the damper valve. The motor adjusts the flow of a viscous liquid through the system in accordance with the control signals received from the damper performance. In one embodiment the valve is slidable in another embodiment the valve is rotatable.

Description

V. Description of the invention (υ Scope of the invention The invention generally relates to suspension devices, but more specifically relates to electronic buffer control of vehicles, such as bicycles and locomotives. BACKGROUND OF THE INVENTION Vehicle suspension The system can improve the manipulation and control of the vehicle by absorbing the energy generated by bumps, pits, obstacles, etc. on uneven ground. In order to meet the demand of the rider for control and control, many hydraulic suspension systems have been designed These systems typically consist of two telescoping sleeves, two chambers holding viscous fluid, several seals to seal the viscous fluid in the chamber, and a buffer unit separating the two chambers. And a buffer valve for regulating the flow of fluid from one chamber to another. In a typical arrangement > an outer tube is fixed to the buffer at a point on the upper part of the vehicle and It fits outside a lower inner tube. The inner tube is matched with the wheels of the vehicle. The two tubes are arranged to slide in the axial direction relative to each other in a telescopic manner. The two tubes are enclosed into two to save viscosity. Body cavity. Seals surround the upper and lower parts of the cavity and seal the fluid in the cavity. When the vehicle rolls over a bulge; the outer tube is compressed and compressed in an axial sliding motion on the inner tube. Rebound. Viscous fluid flows from the lower chamber through the buffer valve to the upper chamber to slow down or compress the outer tube relative to the inner tube. In the subsequent rebound motion, the outer tube is relatively The inner tube slides upward. During the rebound motion, viscous fluid flows through the buffer valve in the opposite direction to slow the upward movement between the outer tube and the inner tube. The hydraulic suspension system shows a typical buffer Performance. If a small loss

Page 5 V. Description of the invention (2) The compression force is slowly and continuously applied to the system. 1 Viscous fluid will flow through the opening of the buffer and the outer tube and the inner tube will move axially relative to each other. Conversely, if a large input compression force is suddenly applied to the system, the viscous fluid will not flow through the opening quickly enough to allow the two tubes to have rapid relative movement. Therefore, the resistance of a hydraulic suspension system to large and sudden forces is stronger than to small and slow forces. "Although hydraulic suspension systems typically exhibit the above-mentioned cushioning performance, the actual cushioning of individual suspension systems Performance is a function of the physical characteristics of the system. The magnitude of the impedance exhibited by the hydraulic suspension system depends on the rate at which viscous fluid can flow from the lower chamber to the upper chamber through the buffer valve. When a suspension system responds to a bulge, it will show less mitigation or resistance if it allows viscous fluid to pass through the damper valve more easily. Therefore, a hydraulic suspension system with a larger opening between the two chambers will be less dedicated than another system with a smaller opening. Earlier technology has many examples of hydraulic suspension systems using telescoping tubes, along with additional features that allow the system to change the cushioning performance of the device to a limited extent. In some cases, such as during short-distance rushing, uphill travel, and trail riding, you often want to temporarily stop or reduce the suspension performance of the suspension device. When the suspension performance of the suspension device is completely stopped , The flow of fluid from the lower chamber to the upper chamber is cut off, so that the outer tube cannot move relative to the inner tube. When the suspension's cushioning performance is reduced, the outer tube will move more slowly than when the system is fully functional. The ability to change the suspension from active to inactive, for example, by adjusting the position of the bumper valve. In earlier techniques, this adjustment was made using a rotatable dial located on top of the outer tube.

418166 V. Description of Invention (3). For two-wheeled vehicles, especially light bikes and locomotives, it is indeed necessary to provide a front suspension system that can be easily turned on and off by the rider. Summary of the Invention The present invention allows a two-wheeled rider to easily and instantaneously change the mitigation performance of a suspension system from active to inactive according to his or her personal preference. The invention also allows the rider's hand to control the suspension without having to leave his favorite riding position. These and other objectives of the present invention are achieved by providing a responsive suspension system, including: a buffer with a shrink-fitted outer tube and an inner tube, and a connection with the outer tube and the inner tube A motor, a switch for the knight to activate, a buffer controller arranged to respond to the trigger switch, and a valve that is operatively engaged with the motor, in response to the buffer controller and according to the operator's choice To provide or not provide a buffer effect. More specifically, the buffer has a fluid chamber connected to one of the outer tube and the inner tube, and a partitioning piston connected to the other of the outer tube and the inner tube to separate the fluid chamber into Upper and lower sections. The partition piston has a plurality of circular holes for the fluid to flow between the upper and lower parts of the fluid chamber. The valve system is arranged in the hollow interior of the isolation piston. Preferably, the partition piston has two circular holes, each communicating with a portion of the fluid chamber. In the open position, the valve is not aligned with any of the round holes, so the fluid

Page 7 418166 V. Description of the invention C4) It can quickly flow between the two parts of the fluid chamber. In this way, the isolation piston is effective. In this position, the diaphragm piston provides substantially no cushioning action when it encounters a bulge, so that the outer tube can move relative to the inner tube. However, a second piston, such as a shimmed piston, is used to control the cushioning force when the isolation piston is operating. This chamber is aligned with at least one circular hole in the closed position, so fluid cannot flow between the two parts of the fluid chamber = this way, the isolation piston is ineffective. In this position, the partition piston does not allow the slightest movement of the outer tube relative to the inner tube. In a preferred embodiment, the motor is located outside the fluid chamber and connected to the valve | so when the switch is actuated, the 'motor pushes the valve between the open position and the closed position. In this specific example, the valve is preferably slid between an open position and a closed position. In another specific example, the fluid chamber is contained in a separate and complete core which is connected to the inner or outer tube, and the core includes an air chamber. In another specific example, the form of the valve and the isolation piston is constructed so as to be rotatable between open and closed positions. Brief Description of the Drawings Fig. 1 is a front view of a bicycle according to the present invention. Fig. 2 is a perspective view showing a preferred form of a suspension fork according to the present invention. Fig. 3 is a side view of the suspension fork of Fig. 2, partially cut away to show a cushion core of the present invention. FIG. 4 is an enlarged perspective view of a telescopic sleeve assembly of the suspension system of FIG. 3.

V. Description of the Invention (5) FIG. 5 is a front view of the suspension system of FIG. 4 in a fully extended position. FIG. 6 is an enlarged cross-sectional view showing details of the core barrel portion of FIG. 5. FIG. Fig. 7 is an enlarged cross-sectional view showing some details of an alternative specific example of the core tube and a short tube of Fig. 6; Fig. 8 is a plan view of one of the second specific examples of the bicycle according to the present invention. Fig. 9 is a diagrammatic axial cross-sectional view of an alternative concrete example of the buffer core cylinder of the present invention. FIG. 10 is a partial cross-sectional view of another specific example of the suspension device used on the bicycle of FIG. 8. FIG. Fig. 11 is a partial cross-sectional view of another specific example of a suspension device used in the bicycle of Fig. 8. Fig. 12 is a cross-sectional view of another specific example of the suspension device used on the bicycle of Figs. 1-3. Fig. 13 is a partial front perspective view of a bicycle according to the present invention. FIG. 14 is an enlarged perspective view of a portion of the bicycle shown in FIG. 13. Figure 15 is an enlarged plan view of one of the telescoping telescoping assemblies of the suspension system of Figure 13; FIG. 16 is a cross-sectional view of the telescopic sleeve type assembly, which is taken along line 16- 丨 6 in FIG. 15. FIG. 17 is an enlarged cross-sectional view showing details of the core of FIG. 16. FIG. 18 is an enlarged cross-sectional view showing details of a portion of the core of FIG. 16. Description of a preferred embodiment Figure 1 shows the agile front suspension system 100 and / or rear suspension of the present invention

V. Description of the invention (6) The hoisting system 102 is installed on the bicycle 110. This system is particularly useful for bicycles and locomotives. As shown in FIG. 2, the suspension system 100 includes two outer tubes 120 secured to the steering tube 130, and the steering tube 1 30 is rotatably fixed to the front tube 1 of the bicycle. 35 on. The top bracket 140 and the bottom bracket 150 are used to fix the outer tube 12 to the steering tube 130. The handlebar beam 5 5 is fixed to the upper end of the steering tube 130. The suspension system 100 also includes a single piece of front and 160 to support the front wheels 175 of the bicycle. The front of the single piece is a control piece to provide torsional and flexural stiffness. · The inner tube I 7 0 is arranged in a set of telescopic ways relative to the outer tube 1 2 0. The lower end of the inner tube 170 is fixed on the front fork 160. There are a plurality of planes 180 on the outer surface of the inner tube 1 70, and a plurality of planes on the inner surface of the outer tube 120, and there are several sets of needle roller bearings arranged between them. There is a relative rotational movement between 1 70. Change to FIG. 3 'It will be discussed in more detail below. In this specific example, only one slow core 1 90 is required to be placed on the outer tube 1 20 or the inner tube 70, and there is a synthetic rubber member 2 0 〇 plus coil spring 205 are connected in series. However, synthetic rubber components and coil springs can be eliminated. In other types of outer tube 120 and inner tube 170 t, only synthetic rubber member 20 () or coil spring 205 = synthetic rubber member 200 plus coil spring 205 can be replaced with air shock absorbers, the latter structure is Well-known to veterans of the industry. This becomes a kind of suspension music system whose spring and cushioning elements are in parallel connection type, which can provide greater movement of the suspension system. This configuration is particularly suitable for suspensions not shown in Figures 1, 2 and 8. Hanging system. ,

Page 10 418166,

5. Description of the invention (8) method, the battery can be set in the component of the buffer controller. Instead of a battery, the power can be supplied by the bicycle itself, with one or two wheels to drive a small generator. Figure 4 shows a telescoping assembly assembly 2 50, consisting of an inner tube 17 G and an outer tube 1 2 0, both of which are coaxial arrangements. The inner tube 170 moves along the longitudinal axis L in the outer tube 1 2 0 or protrudes from the outer tube I 2 0. The inner and outer pipes are essentially hollow cylinders ^ Most preferably made of aluminum or other non-corrosive metals. Multiple needle bearing cages between the inner tube and the outer tube give frictionless movement between the two. In order to prepare for the required pre-load but avoid overload, the overload may cause improper and frictional movement of the extension and contraction. The combination method may require precision-matched components. As shown in FIG. 5, the inner tube 170 is provided with an internal thread 260 on its first end. The inner tube 170 has a central passage 280 having a generally circular cross section. One end of the outer tube 1 2 0 is provided with an internal thread 3 0 0. Although the inner tube 170 is shown as a circular inner tubular cavity, the cavity may be square and still accommodate the shock absorber core. Similarly, the outer tube 120 may include a square inner cavity, and in such a specific embodiment, the f inner tube 170 preferably also includes a square tube shape to facilitate the intervention of the bearing cage. The buffer core I 9 0, which is more suitable, is composed of several buffer elements integrated in a single complete core shell 3 1 0. The buffer core 19 0 still includes an upper piston shaft 3 2 0 and a lower piston shaft 3 3 0 which are engaged by the annular piston 3 4 0. The two shafts 3 2 0 '3 3 0 and the piston 3 4 0 are fitted in the core casing 3 1 0. "These two shafts and pistons are hollow control parts, preferably with the same diameter. Piston 34 0 contains a short tube buffer wide 3 5 0 and the upper piston shaft contains a motor bracket 3 6 0 and a horse

Page 12 5. Description of the invention (9) Yuan 370 (as shown in Figure 6). The independently prepared core tube 900 further includes a top cover 380, a middle cover 390, and an end cover 4Q. The top cap 3 8 0 is provided with an external thread 4 1 0 to mate with the outer tube 12 20 thread 3 0 0. The top cover 3 8 0 has an inner diameter 4 2 0. The upper end of the upper piston shaft 320 is fitted in the inner diameter 420, and it is best to press fit. As shown in Figs. 5 and 6, the middle cover 390 covers the upper end of the housing 3 1 0 and has a thread 43 0 to fit the thread 2 60 of the inner tube 1 70. The end cover 400 covers the lower end of the casing 3 10. In this way, the core tube 910 can be easily installed and removed as a unit from the inner tube and the outer tube 170, 120, and can provide a buffer effect to limit the translational movement therebetween. The end cap 4 0 0 is constructed to slidably receive the lower piston shaft 3 3 0, and the lower end of the lower piston shaft 3 3 0 has a piston 4 3 5 connected thereto. As shown in FIG. 3, the piston 435 and Springs 2 0 0 and 2 0 5 are engaged. The piston 340 includes a flange 440 integrally formed on a circumferential portion of the piston 340. The flange 4 40 divides the housing 3 10 into two chambers: an upper chamber 450 and a lower chamber 460. A viscous liquid such as SAE 5 heavy oil is stored in the two chambers 450 and 460. A sealing piece 4 70 is made between the housing 3 10 and the Shinkansen 390, and the viscous liquid is closed in the upper chamber 45 0. The two chambers 45 0 '460 are sealed with the first ring. 48 o, the latter has a position on the flange of the piston 340 o ring oil seal 480 can prevent oil leakage between the upper and lower chambers 450 and 460. The piston 3 4 0 further includes a pair of first and second openings 4 9 0 and 50 0 1 and a rebound diameter 5 1 0 which are spaced apart in the longitudinal direction. The first or upper opening 490 is above the flange 4 440 'and the second or lower opening 590 is below the flange. open

Page 13 41 8 彳 66-V. Description of the Invention (ίο) The holes 4 9 0 and 5 0 0 are connected to the chambers 4 5 0 and 4 6 0, respectively. The diameter 5 I 0 extends from one side of the flange 440 to the other in the longitudinal direction. The bore 5 1 0 has an opening 5 2 0 under the flange. The second ring oil seal 5 3 Q surrounds the opening 5 2 0 and is provided in the groove to prevent it from moving to the side. The diameter of 5 # 0 is used as an auxiliary path for the rebound fluid flow, which will be discussed later. The approximately cylindrical short-pipe valve 350 is a two-position valve that contains a main passage through which oil can flow between chambers 450 and 60. Let us now explain this main pathway. The short tube width 3 50 is provided with a pair of elongated, longitudinally extending grooves. 'Only one groove 5 3 5 is shown in the figure. The two grooves 5 3 5 are formed on the outer surface of the short tube valve and are spaced apart 1 8 0 along the circumference. Settings. The two grooves 5 3 5 can be aligned with the openings 490 on the connecting shaft of the piston and have a length at least equal to the width from one opening 490 to the other opening 500. Referring to FIG. 7, the short tube valve 3 5 0〆 can be replaced with a hollow tube with a first first opening 5 3 5 1 and a second second opening 5 4 0 ′. Each pair of openings is separated by 180 ° along the circumference. Settings. The first pair of openings 5 3 5 ′ can be aligned with the upper openings 4 9 0. The second pair of openings 5 4 0 ′ can be aligned with the lower openings 5 0 0. Turning back to Fig. 6, the short tube valve 3 50 has an index groove 5 50 provided on the stepped upper portion of the short tube valve. The index groove 55 ° extends 90 ° along the circumference. The upper piston shaft 3 2 0 also has an index pin 5 6 0 which projects radially inwardly and is accommodated in the index groove 5 5 0. The spool valve 3 5 0 further includes a drive shaft 5 70 spreading from its upper end along the longitudinal axis L. The drive shaft 570 is made integrally with the short tube 3 to 50, but it can also be made separately and then pressed or bonded to the proper position. The motor support frame 360 is fixed on the upper end of the piston connecting shaft 340. Motor bracket

Page 14 V. Description of the invention (11) ------ The double control part can store the motor 370 in the bracket. The motor bracket supports the motor, and the drive shaft 580 for rotating the motor and the centerline of the drive shaft of the spool valve. The motor bracket 360 also plays a wide angle that prevents the motor 53 from moving. The motor support frame 36 0 is provided with two salutes 6 ^ arranged along the circumference, to help the filling of fluid into the upper piston shaft 32 {) and the release of air ^ '. The motor bracket frame 360 can be made integrally with the piston coupling shaft 34. 'Τ' / is located in the fluid chamber. ^ tT '^ The coupler 575 operatively engages the motor drive shaft 58 to the short tube drive 570' so that the motor can control the short tube valve 35G, and the short tube valve 35 is connected to the viscous fluid in the two chambers 450, 460 flows. Motor winding longitudinal: The motor drive shaft 5 8 0 is moved; through the coupling, the motor drive shaft 5 8 0 rotates the spool driving shaft 5 7 0 and the spool valve 3 5 0 around the longitudinal axis. The motor 3 70 is activated by the control device 2 0 through the control wire 2 3 5. ° " The upper end of the upper piston shaft 3 2 0 includes a ring member 6 3 0 t to fasten the seal 64 0 there to seal the fluid inside the upper piston shaft. A poem is provided in the center of the threaded control member 6 50 through the ring member 6 3 0 to receive the wire 23 5. To ensure the seal of the upper piston shaft 32o, the encapsulation compound 6 6 0 is applied around the pipe member. Fluid is present in both the lower shaft and the piston connecting shaft. | As explained further below, the buffer controller 2〗 0 selects the motor 3 7 0 to turn on and off, causing the motor drive shaft 5 8 〇 to be driven in the predetermined direction. The predetermined direction is based on The t polarity of the signal from the buffer controller 21o depends on it. The size and / or duration of the signal controls the degree of the motor and the length of the stroke. This situation is the same for every activation.

Page 15

V. Description of the invention (12) The control buffer of the motor 3 7 0 丨 The buffer performance of the 9 0 is to adjust the short tube valve 3 5 0 by moving the short tube 3 3 0 relative to the piston connection 3 4 0. The alignment relationship between the open dagger 5 40 and the elongated groove 5 35 and the corresponding openings 500, 490 of the piston connecting shaft 340. If the groove 535 is not aligned with the openings 5 0, 490 of the connecting shaft of the piston, then the spool valve 3 5 0 is in the closed position. In the closed position, the suspension system is ineffective. This is because when the oil or viscous fluid encounters a bulge, it cannot flow from the lower chamber 460 to the upper chamber 450. As a result, the outer tube 120 cannot move downward relative to the inner tube 1 70. Conversely, if the groove 5 3 5 is aligned with the openings 5 0 0, 4 9 0 of the piston 3 4 0, then the short spool valve 3 5 0 is in the open position. In the open position, the suspension system is active and a small cushioning force occurs. When the bump is encountered and the short tube is in the open position, the oil in the lower chamber 4 60 enters the inside of the piston 340 through the lower opening 5 0 ′ and flows through the groove 5 3 on the short tube valve 3 5 0. 5. Then go out through the upper opening 490 into the upper chamber 450. Thus, the outer tube 120 can move freely relative to the inner tube 170. Referring to Figs. 3 and 5, the downward movement of the outer tube 120 causes the upper piston shaft 3 2 0, the piston 3 40, the lower piston shaft 3 3 0, and the piston 435 to move downward. The piston 3 40 transfers the fluid between the two chambers 460 and 450 through the short tube valve 3500. As such, the piston 435 is allowed to compress the springs 200 and 205 and provide cushioning effectiveness to the suspension system. In this way, the groove 5 3 5 of the short tube valve 3 5 0 and the openings 5 0 0, 4 9 0 of the piston connecting shaft 3 4 0 form a transmission fluid between the two chambers 4 6 0, 4 50. The main channel. When the viscous fluid is compressed in the buffer, that is, "downward

P. 16 Description of the invention (13) ^ The lower chamber 460 flows to the upper chamber μ η. . When the battle bounces back, that is, "upward M / 45Q, flows in the direction of the bulge of M 25. When the upper and lower sides are red," the viscous fluid is on the opposite pipe valve in the open position / 'Using short pipe valve— 90. #Rotate to adjust the short In the example, the change between the closed position of the infusion port. The specific 5 4 0 shown in FIG. 7-through the short "rebound flow system" utilizes the openings 5 3 5 / and i 8 „in the short tube valve for internal transmission. Reference, Figure 1 and Hidden] β # activation signal Yan Yan said that in response to the Knight's activation switch 225, a controller 2 U ρ 屮 becomes the input into the buffer controller 2 0. Position of the buffer valve 350. The individual control W 5fl is given to the motor 3 7 0 ′ to adjust the short tube: this changes the short tube up to 90 ° in the first direction. ’The switch comes from the other position of the / official valve between open and closed. When receiving the slave control signal to the bow signal, the buffer controller sends another change short ^ 22 =, in the second, the motor 9 is driven in the opposite direction. 1 is then used as the position of 黾 & between on and off. The index pin 5 6 0 and the groove 550 are mechanically stopped at the second rotation, preventing 70 ° of 14 ° p ~ love & 〇 turning the f valve 3 5 0. The actuation of the valve is almost instantaneous, and it is most suitable that it is about G · 5 seconds. Large '2 inches on the auxiliary pathway. No matter how much the hydraulic pressure in the lower chamber 46 ° ^ c ^ does not exceed the second seal 5 3 0, which causes the oil to flow through the through-control biO, and the upper chamber to 4 5 0-liquid from the lower chamber Ren Ke Liuxixia, which was added to the seal 5 3 0, could push the seal 5 3 0 into the opening 5 2 0, preventing the aforementioned application ~ 1. If the hydraulic pressure in the upper chamber 450 is large enough, of which The liquid is two: ^ force to the seal 5 3 0, push it away from the diameter opening 5 2 0. In this way, the W body slowly flows from the upper chamber 4 50 to the lower chamber through the path 5 1 0.

Page 17

The transmission ratio of the tile body connected to _4 is 125: ^ Therefore, every 125 rotations of the motor, the transmission shaft rotates at the transmission ratio SPH5003, which has a very fast response time, -people. 5 I. Because the inner core of the entire cylinder, including the upper piston shaft and the lower f 拫 junction side, are filled with oil, the motor is immersed in the oil because of the low-powered motor used internally. This fluid also minimizes short handling friction. The T / Guji coupling: similar to the cushion core discussed earlier, it can also provide electronic cushioning to the rear suspension of the bicycle (see Figure 1). The rear suspension device can be activated with the same switch as the front suspension device, or it can be separated by 4 1 8 16 6 5 'Invention Description (14) 4 6 0. If the suspension i is locked during the compression stroke, the flow will allow the outer tube rebound oil to rise slowly. Also, when this kind of auxiliary bumps up and rebounds, both paths may be used. Suspended bowl In the preferred embodiment, the 'buffer valve 350 will have a body diameter of about 0.3 to 〇. The entire assembly will be at its maximum ambient temperature, which will consume a lot of power in the voltage range from 3.0 volts to 20 volts. Other handle specifications include: minimum operating frequency, between 1 300-500 Hz; maximum flow rate at 1,000 pounds per square '0.4 passenger / min; maximum leakage' at 1000 Pounds / square hour hemp's soil force is 0.02 passengers / minute; and the minimum pressure release pressure is 50 pounds / square hour. " " Force T, design 1 of the bumper, especially a hole in the periphery of the piston 340. A low-weight motor 37 is used to control the damper valve 35. In the perch. In the example, the motor 3 70 is a two-way brushless DC motor star commercial wheel Λ 4 戽 (SPH5 0 0 0 3), which can be purchased from RMB. SPH5003 is made up of-no " brush multi-stage gear. The gear is a star-shaped reduction gear, with a pre- =

P.18 5. Switch of invention description (15). 8 and 9, it is shown that a bicycle has a suspension system 800 installed in the front tube 8200. A switch 2 2 5 is provided on the handle portion of the handlebar beam. The front wheel 1 5 of the bicycle is mounted on the lower end of the front 8 1 0, and the front and lower ends extend outward from the sides of the upper 8 1 1 and then extend downward. The front is supported by a telescopic front tube 82. The outer tube 840 is rotatably installed in the front tube 820, and the upper and lower two rolling bearings 8 2 2, 8 2 4 are opposite to each other. The latter are respectively embedded in the upper and lower two front tube collars 823, 825. Inside the shoulders. An inner tube 890 is coaxial and is telescopically installed in the outer tube 840. A needle bearing 830 is interposed between the inner tube mo and the outer tube 840 to provide a low-friction telescopic mechanism. There is a collar 8 4 5 attached to the outer tube 8 4 0 by a threaded connector 8 4 5 a and an extendable folding dust cover 8 1 5 is fixed to the lower collar 84 5 and the front and upper ends. 8 between 1 and 1. The dust cover 8 1 5 can immediately move in the length direction with the suspension device, and can prevent debris and dust from entering the internal mechanism of the system. The lower end of the inner tube 890 is received and consolidated at the upper end 8i of the front fork, and stretches upward to fit into the lower end of the outer tube 84o in a retractable manner. The spring support for the relative movement of the inner and outer tubes is provided by a slender synthetic rubber spring element 884, which is connected to the lower part of the inner tube 89. The synthetic rubber spring element 8 84 is connected to the piston. The bottom cover 882 is compressed between 88 and 6; the bottom cover 8 8 6 closes the bottom end of the inner tube 890. The bottom cover 8 8 6 is maintained in the correct position at the lower end of the inner tube 890 by a clip 888 received in the annular groove. The two tubes 840 and 890 are preferably circular in cross section, but also h-shaped or other suitable shapes. &

Page 19 V. Description of the invention (16) The piston 882 is a part of the lower end of the complete lower piston shaft 880; the lower piston cymbal 8 8 0 extends telescopically upward through two pipes and is arranged in a concentric manner on the rain pipe 8 4 0 And within 890. The lower piston shaft is connected to the upper piston shaft 8 8 1 through the piston 8 7 6. The upper end of the upper movable base shaft is combined with the head cover 850. The head cover 8 5 0 is fixed to the outer tube 8 4 ′ by a threaded connection 8 5 2 and has a pair of holes 8 5 3 that allow suitable tools to be inserted to facilitate the top cover 8 5 0 to be tightened or removed. under. Such a system can incorporate a pre-installed system, which is well known in the art. The synthetic rubber spring element 884 is mainly operated as a spring f. According to the present invention, the actuable cushioning effect "in motion" has been incorporated into the telescopic activity. In a preferred embodiment, this cushioning effect is provided by a hydraulic cushioning unit 870. The buffer unit 87 is received above the rubber spring 8 8 4 and is made up of a piston and a cylinder; the cylinder forms a ring-shaped hydraulic chamber 8 7 1 and the inner side is the following piston shaft 8 80 ° is the boundary. The lower piston shaft 880 is a movable wall of the annular chamber, and the outside is bounded by a cylindrical member 872. The cylinder can be threaded and combined with the inner tube 890. The lower end 7 8 7 7 can be fixed to the lower end of the cylindrical structure = 8J2 by a suitable method, such as rolling joint, and the lower shaft 8 80 is sealed with a seal. Similarly, 夂 8 7 8 can be fixed to the upper end of the cylindrical member 8 7 2 and seal the upper movement W with a seal. Therefore, the piston 876 holds the ring-shaped chamber: chamber of the buffer unit in all the culprits surrounding the ring-shaped chamber. Filled with suitable hydraulic liquid material, and: plug two =, the tube 891 and the motor 8 9 2 are related to it, as discussed above

Page 20 V. Description of the invention (17) The shock absorber also includes a top-out bumper 879, which is made of synthetic rubber and is located between the piston 8 7 6 and the end cover 8 7 8提供 Provide cushioning effect when the stroke is to be over the top, giving the system a cushioning effect during the rebound after a large impact. The cushion is a circle made of any suitable synthetic rubber. Figure 10 shows an alternative specific example of a suspension system. The suspension system includes an inner tube 909 whose bottom end is fixed to the front fork 906 so that the inner tube and the wheels can move together in a vertical direction. The inner tube 9 0 9 is accommodated in the outer tube 9 1 0 and can slide inside the outer tube by a sliding bearing 9 1 1; the sliding bearing 9 1 1 is provided on the outer surface of the annular block 9 1 2 and Between the inner surfaces of the outer tube 9 1 0, a ring block 9 1 2 is screwed on top of the inner tube 9 0 9 by a thread. The outer tube 9 10 is housed in the front tube (not shown in Fig. 10) and is connected to the handlebar beam in any conventional manner at the top. There are protruding ears 9 1 3 | with threaded holes 9 1 4 at the bottom of the outer tube, ready for connection to the steering linkage. The inner pipe system is divided into a pneumatic chamber 9 1 5 and a hydraulic chamber 9 1 6. The two chambers are separated from each other by a free piston 9 17 and sealed with a 0-ring oil seal 9 1 8. The boundary of the pneumatic chamber 9 1 5 is determined by the lower surface of the piston 9 1 7 and the upper surface of the plunger 9 1 9; the plunger 9 1 9 is equipped with a suspension device including a threaded valve 9 5 2 Bottom ε The gas pressure chamber is filled with a pressurized gas | preferably an inert gas such as nitrogen. The pressure of the gas can be set in advance. The load variation designed by the suspension system is taken into account = the hydraulic chamber 916 above the piston 917 contains hydraulic fluid, and the fixed piston 920 is divided into two parts. The piston 920 is fixed to the lower end of the hollow piston tube 9 2 1, and the upper end of the piston tube 9 21 is fixed to a head cover 9 2 2 mounted on the top of the outer tube 9 1 0. Sliding seals, such as o-ring oil seals,

V. Description of the invention (18) 9 2 3 allows the inner tube to move axially relative to the piston 9 2 0 and the piston tube 9 2 1. Both sides of the piston 9 2 0 communicate with each other through a needle valve including a valve stem 9 2 4 and a valve seat 9 2 5. The upper end of the valve stem 9 2 4 is connected to the motor drive shaft 9 2 6 of the motor 9 2 7 in the piston tube 9 1 i, so that the rotation of the motor drive shaft 9 2 6 will cause the valve stem 9 2 4 to be opposed to the valve seat. 9 2 5 Move to change the opening of the valve. A spring 9 2 8 is provided between the free piston 9 1 7 and the fixed piston 9 2 0 to provide additional load carrying capacity = the ratio of the selected air pressure to the spring pressure, in order to optimize the overall suspension device. Linearity shall prevail. The ratio of the smallest gas chamber volume to the largest (gas chamber volume) determines the lift rate characteristics of the suspension system. When the bicycle rides over a bumpy area, or when other reasons encounter a vertical vibration, the inner tube 909 moves in a vertical direction relative to the outer tube 910 and the fixed piston 920. However, this relative motion is limited by the rate at which incompressible hydraulic fluid flows from one side of the piston 920 to the other. For example, if the inner tube 9 0 9 moves upwards from below the piston 9 2 0 to above the piston. This flow rate, and thus the degree of cushioning provided by the suspension, is controlled by the opening of the needle valve. If the needle valve is fully open, the fluid can flow more easily and provide a low cushion for the rider: the suspension is soft. If the needle valve is closed, the suspension will become almost useless. The rider will not experience any cushioning effect, and the Qing treadmill only has the riding characteristics of an ordinary bicycle. Everyone should be aware that the control of the degree of buffering is very simply > affected by the change in the opening of the needle valve = the change is controlled by a switch on the handlebar beam and a buffer controller to drive the motor, as before Discussed. The motor drives the valve between the open and closed positions.

苐 Page 22 5. Description of the invention (19) Figure 11 shows a specific example that is very similar to the specific example in Figure 10, so the same parts will not be described again. In this specific example, the valve stem 9 5 3 is connected to the motor drive shaft 9 2 6 of the motor 9 2 7 inside the piston tube 9 2 1 and the fixed piston 9 3 0. The piston 930 is provided with upper and lower parts. The extensions 931, 9 32 are not completely expanded to the wall of the inner tube in the radial direction. Instead, the two parts 931, 932 are provided with holes 9 3 3 arranged along the periphery to form opposing pairs in the two parts. The valve stem 9 5 3 is provided with an axial groove 934 ′, and the communication of the liquid on both sides of the piston is achieved by turning the wide stem 9 5 3 ′ to make the groove 934 communicate with a pair of the aforementioned holes 9 3 3. When the valve stem is disposed without a hole and communicated by the groove, there is no hydraulic flow. This is the closed position. The motor 92 7 opens or closes the valve through the drive shaft 9 2 6 as described above. This particular example is popular, especially because the motor does not have to overcome the force acting on the valve during the compression stroke. It will be appreciated that when the inner tube 909 of the specific example of FIG. 10 and FIG. Η moves into the outer tube 910, the valve rod 9 24 '9 5 3 effectively extends further into the hydraulic pressure chamber. Since the liquid is non-compressible, this situation is only possible after the volume of the gas chamber 9 1 5-can be appropriately reduced to compensate for the change in volume of the hydraulic chamber caused by the piston rod. The pneumatic chamber 9] 5 'may be located elsewhere, for example in a hydraulic chamber, or it may simply be omitted if an alternative form of volume compensation device is provided. Turning now to FIG. 12, another specific example of the suspension device 1000 is shown in the figure, which includes a spring and a buffer element integrated into a single-piece core casing 1 0 0 5 ° 玄 suspended ^ 置 1 0 0 0 Can be easily installed and removed from the inner and outer pipes [70, 120] (as attached in Figure 3), and provides flexibility and cushioning

418166 V. Description of the invention (20) to limit translational motion and mitigate vibrations. The suspension device is constructed with an air spring 1010 and a hydraulic shock absorber 1015 connected in order, and is particularly used for the suspension system shown in Fig. 3. The suspension device 1000 also includes a piston shaft 1020, one end of which is connected to the piston 1025, and is used for dividing the liquid in the chamber into a first chamber 〇040 and a second chamber 1 042. The other end is connected to the head cover 1030, and the piston shaft is tied to the outer tube (not shown in the figure). The suspension also has an inner piston shaft 02 2 which is connected to a dial 1 02 3 at the top and extends to the piston 105 2. The piston 1 0 2 5 has a plurality of small holes 1 027 surrounding the periphery, allowing liquid to flow from one side of the piston to the other. Preferably, these holes 1027 are filled with metal sheets to provide little, if any, flow to the compression stroke, restricting and restricting the rebound flow. The piston 1025 still has a central small hole 1028 and a valve seat 092. The inner piston shaft 〇〇22 extends to the valve seat 1029. The dial 1 0 30 rotates the inner piston shaft 1 2 2 俾 to push the shaft, and controls the rebound liquid flow through the valve seat 10 2. The fixed partition wall 1035 further divides the hydraulic liquid buffer 1015 into a first chamber 1040 and a lower third chamber 105. Both chambers contain viscous fluids such as oil. The partition wall 1 0 3 5 has characteristics similar to the piston 3 4 0 (shown in FIG. 6), such as upper and lower openings for the flow between the upper and lower chambers, a motor 105, and a short tube 1 0 5 5, as before. The partition wall 105 also has a number of small holes to facilitate unrestricted rebound flow from the lower chamber 1045 to the upper chamber 1040. The lower living base 1 0 6 0 separates the air bomb yellow 1 0 1 0 from the hydraulic buffer 1. 0 1 5. The lower piston 丨 0 6 is a floating piston, which moves in the housing 100 5. If the short tube 1055 is in the open position, when the piston shaft 1 020 moves into the housing 10 05 (that is, the compression stroke), the upper piston 1 05 is pushed toward the partition wall.

Page 24 418166 V. Description of the invention (21) 1 0 3 5 The flow of oil from the upper chamber 104 to the lower chamber 1045 causes the lower piston 1060 to move in the direction of the closed end 106 of the cartridge. This compresses the air spring 1 0 1 0. The compression of the air spring provides the elastic effect of the system ^ If the short tube 1 055 is in the closed position, the oil cannot flow from the upper chamber 1 04 to the lower chamber 1 045 and the piston shaft 1 2 0 2 cannot move. Therefore, the partition wall 1035 controls the compression flow through the short tube 105. The motor 1050 rotates the short tube between the open position and the closed position, as discussed earlier. During the rebound stroke, the 'compressed air pushes the oil through the partition wall without any restrictions. In this way, the piston 丨 〇 2 5 is pushed upward, and the oil flows from the second chamber 10 4 2 to the first chamber i 〇 4 〇. The position of the inner piston shaft 1202 controls the rebound fluid flow from the second chamber 1042 to the first chamber 1040, as described above. Fig. 13 and Fig. 14 show another specific example, a bicycle 2000 having a unilateral fork suspension device 2002. The unilateral suspension device 2002 has an outer tube 2004, an inner tube 2006, and a steering tube 2008. The inner tube 2006 is placed relative to the outer tube 2 0 'in a telescopic manner as described above. The recirculating bearing is arranged between the inner and outer tubes. Details about this and various other unilateral or bilateral forks that can be used in the present invention are in US Patent Application No. -------------, 1999 Listed on January 22, 2014, the title is "Vehicle Suspension Fork of Vehicles. It is disclosed in the j. Its disclosure is fully incorporated by reference. The outer tube 2 0 4 is borrowed from the first. The bracket 2 G 1 〇 and the lower bracket 2 0 1 2 are connected to the steering tube 2 0 8. The inner and outer telescopic tubes 2Ό 0 4, 2 0 0 6 are offset from the side of the steering tube 2 0 8 > steering Tube 2008 preferably has a steering axis 2014 extending through the wheels

Page 25 V. Description of the invention (22) · One ~ '—-~ below. The steering tube pipe 玎 is fixed to the shaft center 2 0 2 4 and is connected to it. Η ^: So, the wheel is lateral to the steering tube 2 0 8 and is attached to the handlebar beam 2 0 and borrows one. Front, on the frame of a car or locomotive. The inner tube 2006 has a wheel 2 16 for rotatably supporting the wheel. Yes: two; Ξ 2 ’and the suspension device also includes a control suspension system buffer 2.261: 1 control device 2 ° 26, will be explained later. The buffer controller is located at the top of the inner tube 20 ° 4. The better controller is Controlled Gain, which is well known to those skilled in the art. Drive 28 Series is attached to the handlebar beam 2018 of the bicycle, away from the controller 26. The switch 2028 is electrically connected to the controller 2026. The power source is preferably a battery 203, and it is also preferably placed at the top of the outer tube. 5 It supplies power to a motor 2064 (shown in Figure 6) installed outside, a buffer controller 2026, And the switch 2 028 ^ battery 203 is connected to the switch 2 28, the motor, and the buffer controller 2 0 2 by a wire 2 0 2 \ The best 9 volt battery is used. In a modified manner, the battery may be provided in the buffer controller member. Without the battery, the power can be powered by the bicycle itself 'by means of one or two wheels to drive a small generator. Turning now to FIGS. 15-16, the suspension device further includes a buffer core tube 2034, which is preferably composed of several buffer elements integrated into a single complete core tube housing 2036. The buffer mandrel 20 34 includes an upper piston shaft 2 038 and a lower piston shaft 2 0 4 0, which are connected by a partition piston 2 04, a padding piston 2 0 4 4 and an inner shaft 2046. . The two-piston shafts 2038, 2040 and the two-piston 2042, 2 0 4 4 are hollow control members and preferably have the same diameter. The partition piston 2 0 4 2 contains a movable damper valve 2 0 4 8 ° outside of the bumper valve

Page 26 418166 V. Description of the invention (23) The diameter and the inner diameter of the isolation piston have a gap of about 0.005 inch, so the valve can move but the liquid cannot flow between these components. Figure 1 6 and FIG. 13, the core tube 2 0 3 4 also includes a head cover 2 0 50, the middle cover 20 52 and the end cover 2 0 5 4. The head cover 2 0 5 0 has external threads (not shown) To fit the internal thread (not shown) on the outer tube 2 0 04. The head cover 2 0 0 0 and the inner bore 2 0 5 6 on the upper end of the piston shaft 2 3 8 is received in the drill The middle cover 20 52 covers the upper end of the housing 2036 and has external threads (not shown) to communicate with internal threads (not shown) on the inner tube 2 0 06. In this way, the threads on the top cover and the cover between t will fix the core tube 2 0 3 4 in the outer tube and the inner tube. The end cap 2054 covers the lower end of the housing 2036 and a valve 2056 is passed through Through the end cap. The core tube 2034 can be easily installed and removed from the inner tube 2004 and the outer tube 2006. Referring to FIG. 16, the core tube includes a fixed partition wall 2 058 in the housing. 20 3 6 inside. Between the middle cover 2052 and the partition wall 2 58 is defined as a hydraulic chamber 2060, which contains a viscous fluid similar to SAE 5 heavy oil. The housing 2 0 3 6 and the middle cover 2 0 5 A seal is made between 2 and the viscous fluid is hermetically sealed in the hydraulic chamber of the housing. An air chamber 2062 is defined between the wall 2058 and the end cover 2054, which contains air as an air spring. In the air chamber The air pressure in the chamber 2062 can be varied by adding and removing air from the end cap valve 2 0 5 6 ^ The head cover 20 50 receives the motor 20 64 'the latter has a lead screw 2 0 6 6 protruding through the top The countersunk hole 2 0 6 in the head cover. In a preferred embodiment, the motor 2 0 6 4 is

Page 27 V. Description of the invention (24)-Step motor β For example, a highly recommended motor is available from H j S under the name Z, a series of step motors. The side guide screw 2 0 6 converts the rotation motion of the motor about the longitudinal axis L into a longitudinal motion along the longitudinal axis L. The lead screw 2 q 6 6 is coupled to the upper end of the connecting rod 2068, and the connecting rod 2068 extends through the center of the upper shaft 2038. The connecting rod 20 6 8 extends through the intermediate cover 2052 and enters the center of the isolation piston 2042, where the lower end of the connecting rod is combined with the valve's short tube 2408. Now referring to Fig. 17, the isolation piston 2042 includes a flange 2070 integrally formed on the circumference of the isolation piston. An upper extension 2072 extends from the upper surface of the flange 2070 and a lower extension 2074 extends from the lower surface of the flange 2070. The two extensions have ridges 2 0 07 and 20 7 extending on the outer circumference, respectively. The ridges 2 0 7 6 and 2 7 8 successively cooperate with the upper piston shaft 2 0 3 8 and the grooves 2 0 80 and 2 0 82 which protrude from the inner circle of the filling piston 2044. The ridge 20 76 '2 0 7 8 and the grooves 2080, 20 82 couple the partition piston to the upper piston shaft and the shim piston. The partition piston 2 0 4 2 still defines a pair of first and second openings 2 0 8 4 and 2 0 6 which are spaced apart in the longitudinal direction. The first or upper opening 2 0 8 4 is provided on the upper extension 20 72 above the flange 2 7 0. The second or lower opening 2086 is provided in the lower extension portion 207 below the flange 2070. Each of the openings has a width w0 of about 0.100 inches. Each opening also has a height η of 0.315 inches and a thickness of 0.160 inches. These dimensions allow the isolation piston to perform the performance described below. Referring again to Fig. 18, the shim piston 2044 includes a flange 2088 formed integrally on the circumference of the piston. The flange 2 0 8 has a plurality of longitudinally extending small holes 2 0 9 0, and there are pads 2 0 9 1 thereon. The pad 2 0 9 1 is aligned with the small hole 2 0 0 0 on the surface of the β edge 2 0 8. This fillet limits the compression flow during the compression stroke

Page 28 418166

Page 29 Μ 8 16 6 V. Description of Invention (26)-There is a main channel for oil flow between the chambers. For now ~ W s main channel. The valve 2 0 4 4 has an open position (as shown in the figure), in this 窨 'is in contact with the surface 2094 and the openings 2084, 2086 are not the same as & φ ^ 7 β. In the open position%, the oil penetrates through the opening in the cut-off piston, and 流动 flows between the upper and middle chambers 2096 and 2098. This is the main flow path, k. Preferably, the 'isolating piston' has an opening large enough to allow the isolating piston to be guarded in the open position, and the flow of the carcass does not provide significant resistance. The motor 20 64 pushes the link & 2 6 8 along the longitudinal thin LT, thereby pushing between the open and close positions along the longitudinal axis. ^ The width of the valve travel path is greater than the width of the lower opening 2.0 86. Two, for example, the valve = travel path width Ws is about 0.150 inches. 16, the lower end of the lower piston shaft 2 040 extends through the partition wall 2058 and includes an air piston 2104. The air piston 2104 includes a flange 21 06 formed integrally on the circumference of the piston. This flange 2 divides the air chamber 2062 into an upper air chamber 2108 and a lower air chamber 2110. As shown in FIG. 16, the 1 buffer controller 2 0 2 6 can selectively start and stop the motor 20 64, so the lead screw 2 6 6 is driven in a predetermined direction. This predetermined direction is based on The buffer controller 2 determines the polarity of the signal. The size and / or duration of the signal controls the speed of the motor and the length of travel. This situation is the same every time it is triggered. Now as far as Figs. 1, 3, 1, 16, and 17 are concerned, in response to the activation switch 2 0 2 8 ′ of the knight, an activation signal is generated as an input to the buffer controller 20 6. The buffer controller 2 0 2 6 sends a control signal to the motor 2 0 6 4 and adjusts the position of the valve 2 0 4 8 "the motor slides the valve in the first direction,

Page 30

5. Description of the invention (27) This makes the valve move from the closed position to the open position. The surface 2 0 9 4 serves as a stop when the motor sends the valve to the open position. In the open position, the suspension system is already functioning. At this time, the padding piston 2 0 4 controls the cushioning force. When a bulge is encountered and the valve 2 0 8 is in the open position, the oil immediately flows from the hydraulic chamber 2 0 9 of the chamber to the upper hydraulic chamber 2 9 through the main flow path on the isolation piston. 6. Because the isolation piston has no resistance to this flow, the outer tube 2 0 4 can move freely relative to the inner tube 2 0 6. The downward movement of the outer tube 2 0 0 4 causes the upper piston shaft 208, the piston 2042, 2044, the lower live scroll 2040, and the piston 2104 to all move downward. The air-activated base 2104 compressed air bomb 2062 resisted the downward movement of the outer tube. During the compression stroke, as shown in FIG. 18, the packing 2 091 controls the flow of the oil from the lower chamber 2 100 through the small hole 2 0 9 to the intermediate chamber 2 98. This auxiliary flow controls the cushioning force of the system and the movement of the outer tube during a compression stroke. In "The oil horse also lived the outer tube through the filling sheet, and then connected the motor to the 2 0 2 6. The movement was almost upward, and it was received through the filling piston. The table below was received relatively from the send another 1 in the phase valve. Off is instantaneous when the isolation piston is active, or when it rebounds from the main chamber to the middle chamber. The auxiliary plug of the oil plug flows from the middle chamber to the lower chamber. At this time, the filling sheet can slowly rebound and flow, so it will slow down and move the β switch 2 to another signal. The buffer controller will send a control signal to the motor 2064 in one second. The top stop of the JL is pushed in the direction of the inner drive from the open position to the closed position by the motor. The valve will take about one second to guide, and preferably about 0.5 second. bicycle

418166 V. Description of the invention (28) A light or indicator 2 1 0 8 (as can be seen in Figure 14) can be set on the outer tube to indicate the buffer status. The suspension system is ineffective in the closed position. Because the main flow path is closed, the oil cannot pass from the middle chamber 2098 to the upper chamber 2096. When encountering a '-a bulge, the outer tube 2004 cannot move downward relative to the inner tube 2006. If the controller senses a low battery condition, the controller causes the motor to move the valve to the open position 'in this position the shutoff piston does not provide any resistance to the fluid flow. A low battery light can be used to inform the knight about this situation. Although the present invention has been described with reference to some preferred specific examples, please note that the scope of the present invention is not limited to that described here. In addition, the buffer core can be modified to have no casing and the chambers are made in the down tube. Any of the above-mentioned cushion cores can be used as various types of front fork suspension devices or rear suspension devices. Those skilled in the art may find that there are many variants of these better specific examples, which nonetheless fall within the spirit of the present invention. The scope of the present invention will be clearly defined in the following patent applications.

Page 32

Claims (1)

418166 VI. Scope of patent application 1. A bumper for a vehicle, comprising: an outer tube; an inner tube adapted to be telescopically fitted with the outer tube; a fluid chamber connected to the outer tube and the inner tube One of the tubes is connected; a first piston is connected to the other of the outer tube and the inner tube to separate the fluid chamber into a first part and a second part, and the first piston includes a plurality of small holes. For the second part and the first part for fluid circulation; one is connected to the first piston and can be moved from an open position to a closed position to open and close the small hole; an electric motor, Connected to the valve, and pushing the valve between the open position and the closed position; and a switch connected to the electric motor, and providing a signal to the electric motor so that the electric motor pushes the electric signal in response to the signal valve. 2. The bumper according to item 1 of the patent application scope, wherein the first piston includes an annular member with a seal attached to separate the first and second portions of the fluid chamber, and the upper and lower extensions Extending from the ring-shaped member, the first and second extensions each have at least one small hole above; the valve is located in the first piston to open and close the small hole. 3. A bumper according to item 1 of the patent application, wherein the motor is outside the fluid chamber. 4. A bumper according to item 1 of the patent application, wherein the motor is inside the fluid chamber. 5. The buffer according to item 4 of the scope of patent application, wherein the motor is immersed Page 33 418166 6. Scope of patent application Not in viscous fluid. 6. The buffer according to item 1 of the scope of patent application, wherein the fluid chamber is contained in a separate and complete core which is connected to the inner pipe or the outer pipe. 7. The buffer according to item 1 of the patent application scope, further comprising a first shaft for connecting the first piston to the inner or outer tube, and a second shaft extending from the first piston for Bias a spring. 8. The bumper according to item 1 of the patent application, wherein the valve slides between an open position and a closed position. 9. A bumper according to item 1 of the patent application scope, wherein the valve is rotated between an open position and a closed position. 10. The buffer according to item i of the patent application scope, further comprising a second piston connected to the first piston, the second piston comprising a second annular member attached with a seal for removing fluid The first portion of the chamber divides the third portion of the fluid chamber, and the second annular member has at least one second small hole therethrough, and serves as a fluid circulation between the first and third portions of the fluid chamber. The second piston further includes at least one filling hole covering the second small hole for controlling fluid flow between the first and third portions of the fluid chamber. 1 1. The bumper according to item 1 of the scope of patent application, wherein the size of the small hole in the first piston is such that the small hole does not substantially have any resistance to the fluid flow between the first and second chambers of the liquid chamber. . 1 2. A vehicle includes: a) a frame; b) a front wheel; and Page 34 418166 VI. Patent application scope C) A suspension assembly 'includes: i. At least one outer tube; ii. At least one inner tube so as to be elastically fit with the outer tube; ii i. At least A buffer cartridge contains: (0—a fluid chamber connected to at least one of the outer tube and the inner tube; (2) —a piston connected to the other of the outer tube and the inner tube to separate the liquid chamber into a first Part One and Part Two | The piston contains a plurality of small holes for the fluid communication between the second part and the first part; and (3) a valve connected to the piston and movable from an open position to a closed position俾 to open and close the small hole; i v. — Electric motor connected to the valve, push the valve between the open position and closed position; and v. — Switch 'is connected to the electric motor, provided by A signal is sent to the electric motor so that the electric motor pushes the valve in response to the signal. 1 3. The vehicle according to item 12 of the scope of patent application, wherein the suspension assembly is used on the front fork of the vehicle. 1 4. Vehicle according to item 13 of the scope of patent application , Where the front fork is a unilateral type = 1, 5, according to the vehicle in the scope of patent application No. 13 wherein the front fork is a bilateral assembly and each side of the assembly contains the outer tube and inner tube and the buffer Mandrel. 6. The vehicle according to item 13 of the scope of patent application, wherein the suspension assembly is used on one of the rear suspension assemblies of the vehicle. Page 35 6. Scope of patent application 1 7. According to item 12 of the scope of patent application, the vehicle further includes a handlebar beam and the switch is arranged on the handlebar beam. 1 8. A buffer assembly, including: a) an outer tube aligned with a longitudinal axis; b) an inner tube 1 and the outer tube having the same centerline and arranged to be movable along the longitudinal line relative to the outer tube C) a buffer core tube, which is arranged in the two tubes, including: i. A generally cylindrical shell extending along the longitudinal axis, at least a part of the shell is fitted in the inner tube; Inner; ii. An upper piston shaft, one end of which is attached to the outer tube and extends coaxially into the housing, ii 1. lower the piston shaft, which is coaxially extended into the housing and connected with the upper shaft The base shaft is separated, 1 v. — The piston, the upper piston shaft is coupled to the lower piston shaft and includes: (1) a circumferential flange with a first oil seal in contact with the housing, thereby A first cavity is defined above the casing and a second cavity is below the casing within the casing; (2) a first opening, which is located above the flange and communicates with the upper cavity; and ( 3) — a second opening, which is located below the flange and communicates with the lower chamber; v. — Is coaxially disposed in the piston and is Start position is moved to a closed position serve to open and close the opening; and Page 36 4 1 8 16 6 VI. Patent Application Range d)-The motor is engaged with the valve in operation, in which the motor is in the open position (thereby allowing the distance between the first and second chambers) The fluid is allowed to flow) and the closed position (thereby preventing the flow of fluid between the first and second chambers) to push the valve β 1 9. According to the total buffer of item 18 of the patent application Therefore, the valve system can be slid by the motor, and the short tube valve system is not aligned with the opening in the piston in the open position, and the short tube valve system is aligned with the opening in the piston in the closed position. .2 0. The buffer assembly according to item 18 of the scope of patent application, further comprising:-a switch for outputting an activation signal; a buffer controller | being electrically connected to the switch and the motor | The buffer controller is configured to receive a trigger signal from a switch and output a control signal to the motor; and a power source electrically connected to the switch, the buffer controller and the motor. 2 1. The shock absorber assembly according to the scope of patent application 苐 20, wherein the motor is a one-step motor. 2 2. The bumper assembly according to item 21 of the patent application scope, wherein the motor includes a lead screw connected to a short tube valve. 2 3. The buffer assembly according to item 8 of the scope of the patent application, further comprising a partition wall in the casing for dividing the casing into a hydraulic chamber and an air chamber, and the piston is in the hydraulic chamber. The hydraulic chamber is divided into a first chamber and a second chamber within the chamber, and the lower piston shaft extends through the partition wall to enter the air chamber. The lower piston shaft further includes an air piston which can be in the air chamber. Indoor movement. Page 37 6. Scope of patent application 2 4. The bumper assembly according to item 18 of the scope of patent application, further comprising: a head cover fixed to the upper end of the upper piston shaft, and a middle cover covering the first end of the casing. An intermediate cover, an end cover covering the second end of the housing; wherein the head cover is connected with a motor. 2 5. The bumper assembly according to item 23 of the scope of patent application, wherein the end cap includes a valve, and the fluid flow between the air chamber and the outside of the casing can be passed through the valve 51 Page 38