TW201700879A - Unidirectional flow volume regulation structure of shock absorber increasing the sensitivity of the continuous shock absorption and effectively enhancing the service life of the components - Google Patents

Abstract

The present invention provides an unidirectional flow volume regulation structure of shock absorber, which comprises: an inner tube and an outer sleeve fitted with each other and together forming a first oil chamber therebetween, wherein the inner tube is configured with at least one inner tube hole provided for flowing to the first oil chamber; a check valve set disposed in the inner tube and dividing the interior of the inner tube into a second oil chamber and a third oil chamber; a flow-through base disposed between the second and the third oil chambers, wherein the inner tube near the flow-through base is configured with at least one one-way hole communicating with the first and third oil chambers, and one side of the one-way hole is configured with a throttle sheet for effectively sealing the one-way hole, and while the hydraulic oil in the first oil chamber reached a predetermined pressure value, the unidirectional flow will push the throttle sheet aside and enter the third oil chamber to form a secondary flow passage; and a piston set disposed in the third oil chamber capable of making linear displacement and bearing impact force. Thus, the check valve set may provide a second passage during being impacted and recovering, such that the shock absorber may increase the flowing rate during recovery to shorten the recovery time and is provided with the cushioning effect in response to the continuous impact force, and meanwhile, enhance the recovery sensitivity. The present invention has a simple overall structure, and is easy to assemble, and has a low manufacturing cost, and may reduce the component damage caused by excess recovery pressure, so as to increase the service lifetimes of components.

Description

One-way flow regulating structure of suspension device

The invention relates to a pressure regulation structure for oil shock absorbers, in particular to a check valve group, which can automatically open when a preset pressure is reached to increase a pair of flow passages to accelerate hydraulic oil circulation and increase continuous suspension. Sensitivity, and can effectively improve the service life of components.

In the structure of mechanical equipment, vehicles, furniture, molds or tools, etc., buffering devices are commonly used, which are mainly used for buffering functions in which the force is received and blocked when the impact force is received, and the force is cancelled. It can reduce accidental injury to users and improve safety equivalent. Among them, the shock absorbers used in vehicles most value the performance of the shock absorbers. It is necessary to consider how the impact forces transmitted to the wheels and the car body in response to poor road conditions are relevant to the rider and the occupant. Comfort.

Shock absorbers installed on bicycles, the most common ones are located on the front fork, rear fork frame or seat tube. The shock at the front fork is mainly to cushion the impact from the ground to the front wheel; the rear forklift The shock absorber disposed between the frame and the main frame buffers the impact force transmitted from the ground to the rear wheel; the shock absorber disposed in the seat tube buffers the impact force transmitted from the frame to the seat tube.

Further analyzing the shock absorbers used in bicycle front forks, the structure can be roughly divided into "mechanical", "oil pressure" and "oil and gas hybrid"; among them, "mechanical" shock absorbers refer to their structures. A damper-inducing component, with an elastic member as a buffer for the main impact force, the front fork shock absorber device, such as the "lockable bicycle suspension fork structure" disclosed in the new patent No. 094210952; The shock absorber front fork is based on the oil pressure principle. The oil chamber is provided in the front fork. By filling the hydraulic oil and flowing properly in the structure, the buffer effect is generated. Such technology application is as in the domestic 096215098. The "hydraulic shock absorber for bicycle front fork" disclosed in the new patent; another type of "pneumatic" shock absorber front fork is provided with an oil chamber and a gas chamber in the structure, and the gas can be compressed. The feature is used as a buffer for the impact force. This technology is disclosed in the "Gas-spring shock absorber" disclosed in the Japanese Patent No. 099128655; "Mixed" front fork suspension structure combined with various technologies such as "air pressure" and "mechanical and hydraulic pressure".

In terms of efficiency analysis, in addition to the basic "buffering" effect, the bicycle suspension front fork has also developed various functions, such as shock absorber buffer locking and shock adjustment, etc. Among them, "shock buffer locking locking" The effect is mainly that the flat function can be adjusted without the need for a buffer function, and can be switched to lock the lock out state, which can reduce the rider's more difficult time to step on the buffer state; the "shock adjustment" function provides adjustment Damping values are used to create different levels of shock to meet individual needs. Other enhancements such as "security" and "sensitivity" are available.

For the structural arrangement, the shock absorbers for the "oil pressure type" and "oil and gas hybrid type" are commonly configured as "two oil chambers" above or below or inside and outside; "three oil chambers" are configured above or below; Or "multiple oil chambers and air chambers" are configured above or below. Due to the arrangement of each oil chamber or air chamber, the position of each component, the spatial type, the actuation correlation, and the path of internal hydraulic oil or gas circulation, the positional arrangement of different oil chambers and air chambers will affect other related components. The actions and composition, and the achievement of the results will be different.

The "for easy adjustment of the front fork shock absorber" disclosed in the new patent No. 094,216,899, which has an adjustable damping effect, can be worn in the inner tube at one end of the outer tube, and the inner tube is penetrated. A piston having a sliding hole is arranged inside one end of the outer tube; a hollow tube has one end fixed to the inside of the outer tube, and a perforation of different diameter is formed in the other end, and a radial direction is arranged on the tube wall at one end of the large aperture And a lower oil hole communicating with the perforation, the end is further provided with a regulating valve which can be located in the inner tube, a ejector rod can be connected with the hollow tube through the regulating valve, and the ejector rod is provided with a penetrating oil hole therein; The rod is disposed in the hollow tube, and the upper end and the lower cone are respectively formed at the two ends, and the ring portion is formed at the middle portion, the ring portion is in the hole with a large hole diameter of the hollow rod, and the elastic element is arranged outside the upper cone head The elastic member is disposed at an end surface of the ring portion and the ejector pin; an adjusting member is disposed on the outer tube and opposite to the lower cone portion, and is provided with a knob and an actuating member connected to each other, and the end surface of the actuating member is formed with a tapered top push surface, the push top surface and the lower cone head abut each other Contacts.

The utility model relates to a front fork shock absorber which can adjust the damping value, such as the "regular tube front fork shock absorber" disclosed in the domestic patent No. 094209583, which is provided with an inner and outer tube which are interpenetrated and located in the outer tube. One end of the inner tube is provided with a hollow piston, a regulating tube is disposed in the outer tube and the other end thereof penetrates the piston; the adjusting tube is provided with a hollow tube and a control rod located therein, and the hollow tube is located at one end of the inner tube Springs, washers and regulating valves with side holes in the axial direction are provided in sequence. The regulating valve has an inner tube formed with upper and lower oil chambers, and a top rod having an oil hole therein is inserted through each member and fixed at the end of the hollow tube, and the gasket is located at a side hole with respect to one end of the piston. Wherein, the hollow tube is provided with a lower oil hole communicating with the oil hole in the lower oil chamber, and the other end of the hollow tube penetrates the outer tube and is fixed to each other; a control rod is disposed in the hollow tube, and is formed at one end with respect to the lower oil hole The cone has a gap formed therebetween.

There is also a front-rear suspension device that can adjust the damping value, such as the "hydraulic shock absorber front fork" disclosed in the new patent No. 094217055, which includes; an upper fork tube; a lower fork, and the upper fork sleeve a locking device is non-movably mounted inside the upper fork tube and located below the hydraulic oil level, the locking device divides the inside of the upper fork tube into an oiling chamber and a lower oil chamber, and The utility model has a valve body, the valve body has at least one inlet hole for the hydraulic oil of the lower oil chamber to turbulently flow into the oil chamber, and at least one reflow of the hydraulic oil for the oil chamber to the lower oil chamber a adjusting device having a knob and a first control rod, the knob being located outside the top end of the upper fork tube for driving the first control rod to block the use of the inlet hole, the first control rod having a shaft hole and at least one side hole, the shaft hole communicating with the inlet hole of the locking device and having a small diameter portion, the side hole communicating with the shaft hole and the oiling chamber; a fine adjustment device having an adjustment button a second control rod, a spring and a valve plug, the adjustment button is located at the a second control rod disposed outside the top end of the fork tube for axially displaceing the second control rod disposed in the shaft hole of the first control rod, the spring and the valve plug being located in the shaft hole of the first control rod, the spring The valve plug is caused to abut against the small diameter portion of the shaft hole to block the inlet hole from communicating with the side hole of the first control rod.

In the above structure, all of the shock absorbers have adjustable damping, wherein the first, the second case and the second case all have adjustment knobs disposed under the front fork; the first case is mainly to rotate the knob to push the top The surface drive control rod controls the orifice size of the oil hole to generate a change in the hydraulic oil flow rate to achieve the buffer level adjustment; the second case uses the knob below the rotation to drive the control rod to generate a linear displacement to the oil hole. The size of the orifice changes, and the effect of adjusting the damping of the buffer is achieved, but such damping adjustment is limited to the buffering device when the shock absorber is in a buffer state; in the third case, the fine adjustment device is disposed at the upper portion of the front fork, thereby adjusting the The diameter of the runoff is such that the flow rate and damping value of the hydraulic oil changes.

The above-mentioned conventional shock absorbers for adjusting damping are mostly provided with one oil in one valve group. In the room, an adjustment group is used to control the change of the flow rate of the hydraulic oil through the valve group to have different damping values, so that the suspension performance can be fine-tuned, and the buffering efficiency is better when the flow rate is fast, but when riding It is more laborious. When the flow rate is slow, the buffering efficiency is poor, but it is more labor-saving when riding.

However, when encountering a continuous impact force with extremely poor road conditions, the conventional structure will still be unable to provide cushioning efficiency due to the slow rebound speed and low sensitivity due to the rebound and the subsequent impact. The more the returning oil path is, the lower the flow velocity is, the slower the rebound speed and the lower the sensitivity. On the other hand, if the impact force is large, the return speed of the hydraulic oil is slow when rebounding. The internal pressure of the hydraulic oil is also slowed down. This back pressure situation is likely to cause collision or damage between the relevant components, so that the service life of the components is short. Therefore, the creator of the case is equipped with a check valve group for hydraulic pressure. When the oil is recirculated, another sub-flow passage is opened to accelerate the reflow and improve the sensitivity of the shock absorber, thereby forming a practical and innovative suspension structure in response to the continuous impact force.

In view of the above, the unidirectional flow regulating structure of the shock absorber disclosed in the present invention is disposed in a buffer device, and includes: an inner tubular member and an outer sleeve disposed on each other, and the two are formed together for filling a first oil chamber of the hydraulic oil, and at least one inner tube through hole for circulating to the first oil chamber at a predetermined portion of the inner tube; a check valve group disposed at a predetermined portion of the inner tube And the inner tube member is internally divided to form a second oil chamber and a third oil chamber, the one-way valve group has a through hole connected to one of the second and third oil chambers, and a circulation seat Provided in the set through hole, which has a main flow hole of a continuous shape, and is a main passage for supplying hydraulic oil of each of the second and third oil chambers to each other, and is close to the circulation seat. a preset portion of the pipe member is provided with at least one unidirectional through hole communicating with each of the first and third oil chambers, and a throttle piece is disposed on one side of the one-way through hole, which can effectively close the one-way through hole. When the hydraulic oil in the first oil chamber reaches the preset pressure value, the throttle piece is pushed into the one-way of the third throttle Moving to generate a pair of flow passages; a piston set is disposed in the third oil chamber and is linearly displaceable therein, and is capable of withstanding an impact force to generate compression and restore the internal space of the third oil chamber; The above-mentioned component is used to provide the second passage when the rebound is returned after the impact, so that the flow velocity of the suspension device increases during the rebound, and the rebound time is shortened, so that it can respond to the continuous impact force. The cushioning effect enhances the sensitivity of the rebound at the same time, and the overall structure is simple, the assembly is easy, the manufacturing cost is low, and the rebound can be reduced. If the pressure is too large, the damage of the component is caused, so that the service life of the component can be improved, so that the overall structure can be convenient and practical.

The main object of the present invention is to provide a one-way flow regulating structure for a shock absorber, which is provided with a one-way valve group, which is provided with a second passage when rebounding after impact, whereby the shock absorber is rebounded. The flow rate is increased and the rebound time is shortened, so that it has a buffering effect in response to continuous impact force and at the same time improves the sensitivity of the rebound.

A second object of the present invention is to provide a one-way flow regulating structure for a suspension device, wherein the one-way valve group does not open the second flow passage when the shock absorber receives an impact force, and is designed for one-way circulation. Therefore, it does not affect the performance of other damping value adjustment groups or valve groups.

A further object of the present invention is to provide a one-way flow regulating structure for a shock absorber, wherein the one-way valve group can be set to set a pressure to open the second passage, so that the rebound pressure must be quickly released in response to a large impact force. demand.

A further object of the present invention is to provide a one-way flow regulating structure for a shock absorber, which has a simple overall structure, is easy to assemble, has low manufacturing cost, and can reduce damage of components caused by excessive rebound pressure. Improve the service life of components.

[this invention]

(10) ‧ ‧ inner pipe fittings

(11) ‧‧‧Upper

(12) ‧‧‧Under the tube

(20)‧‧‧Outer kit

(21)‧‧‧First Oil Room

(22) ‧‧‧ inner tube through hole

(30) ‧‧‧ check valve group

(31)‧‧‧Second oil room

(32) ‧‧‧ third oil room

(33) ‧ ‧ set up through holes

(34) ‧ ‧ Circulation

(341)‧‧‧Main flow holes

(342) ‧ ‧ set of studs

(343)‧‧‧Card Department

(344)‧‧‧Resident

(35)‧‧‧One-way through hole

(36)‧‧‧ throttle

(37)‧‧‧Flexible parts

(40)‧‧‧Adjustment valve group

(50) ‧‧‧Piston Group

(70) ‧‧‧buffering device

(71) ‧‧‧Shock front fork

The first figure is a perspective view of a preferred embodiment of the present invention.

The second figure is a perspective exploded view of a preferred embodiment of the present invention.

Figure 3 is a cross-sectional view of a combination of a preferred embodiment of the present invention.

The fourth figure is a schematic view of an impact state of a preferred embodiment of the present invention.

The fifth figure is a schematic diagram of a rebound state according to a preferred embodiment of the present invention.

Figure 6 is a perspective view of a second embodiment of the present invention.

Figure 7 is a perspective exploded view of a second embodiment of the present invention.

Figure 8 is a cross-sectional view showing a combination of a second embodiment of the present invention.

Figure 9 is a perspective view of a third embodiment of the present invention.

First, please refer to the first to third figures. The one-way flow regulating structure of the shock absorber provided by the present invention is disposed in a buffer device (70) and is applied to one of the bicycle suspension forks (71). The implementation description mainly includes: an inner tube member (10), an outer sleeve (20) sleeved outside the inner tube member (10), and a one-way valve group disposed in the inner tube member (10) ( 30), a regulating valve group (40) and a piston group (50).

The inner tube member (10) is tubular and is formed by a joint of an upper tube (11) and a lower tube (12).

The outer sleeve (20) is sleeved and fixed outside the inner tube member (10) for oil bladder type application; each of the inner tube member (10) and the outer sleeve member (20) are formed together to fill hydraulic oil. a first oil chamber (21), and at least one inner tube through hole (22) for circulating to the first oil chamber (21) at a predetermined portion of the inner tube member (10).

The one-way valve block (30) is disposed at a predetermined portion in the inner tubular member (10), and can partition the inner portion of the inner tubular member (10) to form a second oil chamber (31) and a third oil chamber ( 32); the one-way valve group has a through hole (33) connected to one of the second and third oil chambers; a circulation abutment (34) is disposed on the set through hole (33), and The through hole (33) may be linearly displaced; the flow abutment (34) has a through-shaped main flow hole (341) for providing each of the second and third oil chambers (31) ( 32) a main flow passage through which the hydraulic oil flows through each other; at a predetermined portion of the inner tubular member (10) adjacent to the circulation abutment (34), at least one one-way through hole (35) is provided, which communicates each of the first, a third oil chamber (21) (31); the circulation abutment (34) has a set of protrusions (342) disposed in the set of through holes (33); the one-way through holes (35) One side is provided with a throttle piece (36), which is disposed on the set of protrusions (342), which can effectively close the one-way through hole (35), and the hydraulic oil in the first oil chamber (21) When the preset pressure value is reached, the one-way flow of the throttle piece (36) into the third throttle (32) is pushed open to generate a secondary flow channel; The extending end of the column (342) is provided with a locking portion (343) for positioning on one side of the set through hole (33); the predetermined portion of the flow abutting seat (34) is provided with a convex one. (344); an elastic member (37) having one side abutting the abutment (344) and the other side abutting the throttle piece (36) to provide the throttle piece (36) to be pushed away from the single After the through hole (35) is circulated, the throttle piece (36) can be reset again to close the automatic elastic force of the one-way through hole (35).

The adjusting valve group (40) is disposed in the second oil chamber (31), and the hydraulic oil in each of the first and second oil chambers (21) (31) is transmitted through the adjusting valve group (40) Circulation.

The piston set (50) is disposed in the third oil chamber (32) and can be linearized therein Displacement and can withstand impact forces to create compression and return to the interior of the third oil chamber (32).

With the above components, the present invention utilizes the one-way valve block (30), which is provided in the second passage when the rebound is returned after the impact, whereby the flow velocity of the suspension device increases during rebound, and the rebound time is shortened. It has the buffering effect of continuous impact force and enhances the sensitivity of rebound. At the same time, it has simple overall structure, easy assembly, low manufacturing cost, and can reduce the damage of components caused by excessive rebound pressure. The service life of the components, so the overall structure can be convenient and practical.

In order to further understand the structural features, technical means and expected effects of the present invention, the manner of use of the present invention will be described as follows: For the assembly of the present invention, please refer to the second to third figures, which are Each of the adjusting valve group (40) and the piston group (50) is installed, and the inner tube through hole (22) and the one-way through hole (35) are integrally formed on the preset portion of the inner tube member (10); Each of the elastic member (37) and the throttle piece (36) are sequentially sleeved on the set of protrusions (342) of the flow abutment (34), and the set of protrusions (342) are used for the card. The end of the portion (343) is inserted into the set of through holes (33), at this time the throttle piece (36) will be pushed by the elastic member (37) to close each of the one-way through holes (35); Then, the regulating valve group (40) is installed in the second oil chamber (31) of the upper pipe (11), and the lower pipe (12) is assembled to the upper pipe (11); then the outer casing is assembled (20) sleeved outside the inner tube member (10) and positioned; finally, the piston group (50) is inserted into the third oil chamber (32) from below the lower tube (12) and positioned; Finally, the hydraulic oil is filled in each of the second and third oil chambers (31) (32), that is, the assembly is completed.

When the present invention is subjected to an impact force, please refer to the second to third figures, wherein the piston group (50) is exposed to one end of the inner tubular member (10) to receive an impact force toward the third oil chamber (32). The internal linear displacement causes the third oil chamber (32) to gradually compress, and the hydraulic oil in the third oil chamber (32) is pressurized to flow into the second oil chamber toward the main flow hole (341) ( 31), at this time, the circulation seat (34) is also subjected to the flow pressure of the hydraulic oil to generate a linear displacement floating state toward the second oil chamber (31), and the hydraulic oil entering the second oil chamber (31) is After being adjusted by the internal damping of the adjustment valve block (40), the inner tube through hole (22) flows to the first oil chamber (21). The greater the impact force, the more space the third oil chamber (32) is compressed, and the greater the amount of hydraulic oil that circulates to the first oil chamber (21).

When the present invention is subjected to an instantaneous rebound action after receiving an impact force, please refer to the fifth figure, when the impact force on the piston group (50) is released, at this time, each of the first, second, and third oil chambers (21) (31) (32) The hydraulic oil pressure is greater than atmospheric pressure, and the internal hydraulic oil will have two circulation routes. Row: the first channel is the main channel, then the first oil chamber (21) passes through the inner tube through hole (22) to the regulating valve group (40), and then enters the second oil chamber (31), and then The third oil chamber (32) enters through the main passage (341), and the circulation seat (34) is also synchronously moved toward the third oil chamber (32) to flow into the third oil chamber (32). The hydraulic oil is then linearly displaced outwardly by the piston group (50) to rebound back; the second channel is the secondary flow passage, and the hydraulic pressure in the first oil chamber (21) is large, so the hydraulic pressure therein A portion of the oil passes through the one-way through hole (35) and pushes the throttle piece (36) to open the one-way through hole (35) to enter the third oil chamber (32), thereby further the piston group (50) ) gradually shifts outwards linearly to rebound back.

The secondary flow passage generated by the rebound action of the present invention can set the first oil chamber (21) to push the throttle piece (36) at a preset pressure to enable the one-way through hole (35). Opening the auxiliary flow passage, so that the hydraulic oil of the first oil chamber (21) directly enters the third oil chamber (32); in this embodiment, the elastic force of the elastic member (37) is used as the preset pressure setting of the opening. When the internal pressure of the first oil chamber (21) is greater than the elastic force of the elastic member (37), the throttle piece (36) can be pushed to make the hydraulic oil located in the first oil chamber (21) directly and quickly. Flowing to the third oil chamber (32); when the internal pressure of the first oil chamber (21) is less than the elastic force of the elastic member (37), the throttle piece (36) is pushed to the one-way through hole (35) And further closing the auxiliary flow passage. At this time, the first oil chamber (21) may still have a part of the hydraulic oil, and then the main flow passage is recirculated, that is, through the inner tube through holes (22) and the regulating valve group (40). The second oil chamber (31) enters the main oil passage (341) and flows back to the third oil chamber (32).

The circulation abutment (34) of the present invention is disposed in the set through hole (33) in a floating state, and compresses the piston group (50) to compress the third oil chamber (32) when an impact force is generated. When the internal pressure of the third oil chamber (32) is large, the circulation abutment (34) is moved toward the second oil chamber (31), and the abutment (34) to the one-way through hole (35) The distance of the edge wall is reduced, so that the elastic member (37) has a large elastic force in a compressed state, so that the throttle piece (36) is tightly pressed against the one-way through hole (35) and is closed. The force of moving the throttle piece (36) by the internal pressure of the first oil chamber (21) will be greater than a preset value, so that the throttle piece (36) does not open the secondary flow passage in the impact state, and can effectively reduce When the impact occurs, the oil circuit returns and the impact performance is low.

The present invention adopts a three-chamber configuration, wherein each of the second and third oil chambers (31) (32) is disposed above and below the inner tubular member (10), and the first oil chamber (21) is inside and outside. The method is disposed outside each of the second and third oil chambers (31) (32). In addition to the adjustment valve group (40) as a damping adjustment function, the present invention further provides the single tube in the inner tube member (10). The structure of the valve block (30) is designed to achieve the following effects:

1. When the piston group (50) rebounds after being impacted, the hydraulic oil in the first oil chamber (21) will open the passage except for the hydraulic oil to indirectly return to the main passage. Providing another second passage, the hydraulic oil of the first oil chamber (21) can directly flow directly into the third oil chamber (32) through the one-way through hole (35), thereby speeding up the reflow speed, so Reduce the rebound time of the overall suspension device.

2. The present invention provides a structural design that can effectively open the secondary flow channel when rebounding, and therefore has a short rebound time, and thus has a buffering effect capable of responding to continuous impact force, and simultaneously improves the sensitivity of the rebound after the overall suspension. .

3. The elastic force setting of the elastic member (37) can be used to achieve the second passage of the first oil chamber (21) under the preset pressure value to open the one-way through hole (35), thereby responsive to a large impact. The rebound pressure of the force must be quickly relieved.

4. The inner tube member (10) and the outer sleeve (20) which are interposed between the two sides of the present invention cooperate with the one-way valve group (30) disposed in the inner tube member (10), and are respectively disposed therein The structural design of each of the adjusting valve group (40) and the piston group (50) in the upper and lower parts of the pipe member (10) is simple in structure, easy in assembly, and low in manufacturing cost.

5. The invention can quickly remove the internal pressure of the shock absorber and the internal stress of the hydraulic oil during the rebound, so that the damage of the component caused by the excessive rebound pressure can be reduced to improve the service life of the component.

6 to 8 are a second embodiment of the present invention, wherein the outer sleeve (20) is a general tubular body application; the inner tubular member (10) is a one-piece structure, the check valve The group (30) is disposed at a preset part inside the inner tube member (10). The other assembly modes, the oil flow and the operating state of the embodiment, and the expected effects are all identical to the first embodiment described above.

Please refer to the ninth embodiment, which is a third embodiment of the present invention, which is applied to a bicycle seat tube (72), wherein the seat tube (72) is the buffer device (70) of the present invention. The inner tube member (10) and the outer sleeve member (20) are also sleeved with each other, and the check valve group (30) is disposed in a preset portion inside the inner tube member (10); the inner tube member (10) The upper second oil chamber (31) is provided with a regulating valve group (40); a piston group (50) is disposed below the inner tubular member.

The other assembly modes, the oil flow and the operating state of the embodiment, and the expected effects are all identical to the previous embodiments. In addition, the present invention can be applied not only to the bicycle front fork and the seat tube portion, but also to the suspension system of the locomotive and the automobile, or various types of machinery or equipment. In the structure, the above effects can be achieved.

In summary, the "one-way flow regulating structure of the suspension device" disclosed in the present invention provides an effect of increasing the rebound flow rate of the hydraulic oil, shortening the rebound time, and responding to the continuous impact force. And the inner tube member and the outer sleeve are matched with the one-way valve group disposed in the inner tube member, and combined with the structural design of each of the adjusting valve group and the piston group respectively disposed in the upper and lower portions of the inner tube member, The one-way valve group opens the second passage when rebounding after impact, so that the hydraulic oil returns faster and achieves rapid rebound, and the overall structure is simple, the assembly is easy, the manufacturing cost is low, and the component has long service life. The one-way flow adjustment and suspension structure with a stable combination and high ease of assembly has made the whole industry practical and cost-effective, and its structure has not been seen in books or public use, and it is in line with the new patent application. The essentials, I would like to ask the bureau to understand the patent, to grant patents as soon as possible, to pray.

It is to be understood that the above is a specific embodiment of the present invention and the technical principles applied thereto, and the functional effects produced by the concept of the present invention are still beyond the spirit of the specification and drawings. In the meantime, it should be combined with Chen Ming within the scope of the present invention.

(11) ‧‧‧Upper

(12) ‧‧‧Under the tube

(20)‧‧‧Outer kit

(22) ‧‧‧ inner tube through hole

(30) ‧‧‧ check valve group

(33) ‧ ‧ set up through holes

(34) ‧ ‧ Circulation

(341)‧‧‧Main flow holes

(342) ‧ ‧ set of studs

(343)‧‧‧Card Department

(344)‧‧‧Resident

(35)‧‧‧One-way through hole

(36)‧‧‧ throttle

(37)‧‧‧Flexible parts

(40)‧‧‧Adjustment valve group

(50) ‧‧‧Piston Group

Claims (10)

The unidirectional flow regulating structure of the shock absorber is disposed in a buffer device, comprising: an inner tubular member, which is tubular; an outer sleeve, sleeved and fixed outside the inner tubular member, each inner tubular member and outer sleeve Forming a first oil chamber for filling hydraulic oil together, and providing at least one inner tube through hole for circulating to the first oil chamber at a predetermined portion of the inner tube; a check valve group Presetting a portion in the inner tube member, and separating the inner portion of the inner tube member into a second oil chamber and a third oil chamber, the one-way valve group having a group connecting the second and third oil chambers a through hole, a circulation abutment, is disposed on the set of through holes, and has a main flow hole of a continuous shape, and is a main passage for providing hydraulic oil flowing between the second and third oil chambers. Providing at least one one-way through hole, the first and third oil chambers are connected to one of the first and third oil chambers, and one throttle piece is disposed on one side of the one-way through hole. Effectively closing the one-way through hole, when the hydraulic oil in the first oil chamber reaches a preset pressure value, pushing the throttle piece a unidirectional flow into the third throttle to generate a pair of flow passages; a piston set is disposed in the third oil chamber and is linearly displaceable therein, and is capable of withstanding an impact force to generate compression and recover the first The internal space of the three oil chambers. The one-way flow regulating structure of the shock absorber according to the first aspect of the patent application has a regulating valve group disposed in the second oil chamber to allow hydraulic oil in each of the first and second oil chambers to pass through the The regulating valve groups are circulated to each other. The unidirectional flow regulating structure of the suspension device according to the first aspect of the patent application, wherein the circulation abutment is linearly displaceable on the set of through holes. The unidirectional flow regulating structure of the shock absorber according to the first aspect of the patent application, wherein the circulating abutment has a set of protruding columns disposed in the set of through holes; and the extending end of the set of the protruding columns is provided There is a clamping portion, which is positioned on one side of the set through hole. The one-way flow regulating structure of the shock absorber according to claim 1, wherein the predetermined portion of the flow abutment is provided with a convex one; and one of the extended preset heights is provided at the center of the circulating abutment a plurality of protrusions are arranged; the throttle piece is disposed on the set of protrusions and can effectively close the one-way through hole; an elastic member has one side abutting the abutment and the other side abutting the throttle The piece is provided to provide the throttle piece after being pushed open, and the displacement can be reset to close the automatic elastic force of the one-way through hole. The one-way flow regulating structure of the shock absorber according to the first aspect of the patent application, wherein the inner tubular member is formed by an upper tube and a lower tube being connected to each other. The one-way flow regulating structure of the shock absorber according to the first aspect of the patent application, wherein the outer kit is an oil bladder type application. The one-way flow regulating structure of the shock absorber according to claim 1, wherein the outer kit is a general tubular body. The one-way flow regulating structure of the shock absorber according to claim 1 of the patent application scope, wherein the buffering device is applied to various types of shock absorbers of the locomotive. The one-way flow regulating structure of the shock absorber according to the first aspect of the patent application, wherein the cushioning device is applied to various types of bicycle shock absorbers.