CN215521784U

CN215521784U - Damping adjustable shock absorber

Info

Publication number: CN215521784U
Application number: CN202121727277.6U
Authority: CN
Inventors: 陈枢
Original assignee: Chongqing Guogui Racing Technology Co ltd
Current assignee: Chongqing Guogui Racing Technology Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-01-14
Anticipated expiration: 2031-07-27

Abstract

The utility model discloses a damping adjustable shock absorber which comprises a shock absorber body and a damping adjusting knob arranged at the lower end of the shock absorber body, wherein a connecting sleeve is sleeved on the outer side wall of the lower end of the shock absorber body through threads, an adjusting window is arranged on the wall of the connecting sleeve corresponding to the damping adjusting knob, and the lower end of the connecting sleeve is also provided with a mounting lug for connecting a vehicle to be suspended. The utility model utilizes the connecting sleeve with the adjusting window, not only can adaptively adjust the length of the shock absorber according to the height of a vehicle body and the stroke of the suspension, but also can operate the damping adjusting knob through the adjusting window under the state that the shock absorber is not detached from the suspension, thereby improving the universality of the shock absorber and simultaneously increasing the convenience of damping adjustment.

Description

Damping adjustable shock absorber

Technical Field

The utility model relates to the technical field of vehicle suspension, in particular to a damping-adjustable shock absorber.

Background

In a suspension system of an automobile, since an elastic element (e.g., a shock absorbing spring) itself reciprocates when filtering road surface shock, a shock absorber is usually installed in the suspension system to suppress the shock when the spring rebounds after absorbing shock in order to improve the ride comfort of the automobile.

At present, the shock absorber that adopts among the automotive suspension system is mostly hydraulic cylinder formula shock absorber, and the theory of operation of this kind of hydraulic cylinder formula shock absorber is when relative motion appears because of vibrations between frame and axle, piston rod up-and-down motion in the shock absorber, fluid in the shock absorber cavity just flows to another intracavity from a chamber repeatedly to the kinetic energy that relative motion between shock absorber piston rod subassembly and the shock absorber barrel subassembly produced converts the heat energy of fluid into and outwards distributes away, in order to play damped effect.

With the rapid development of the automobile industry and the continuous improvement of the living standard of people, people have higher and higher requirements on the riding comfort of automobiles, and the adjustable-damping shock absorber is produced along with the automobile suspension to achieve a better state. However, the damping adjustable shock absorber available in the market is usually provided with a damping adjusting knob at the bottom of the cylinder barrel, and when the damping is adjusted, the shock absorber needs to be detached from the suspension frame first to rotate the knob, so that the operation is time-consuming and labor-consuming, and the user requirements are difficult to adapt.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a damping-adjustable shock absorber which can be used for conveniently adjusting the damping of the shock absorber by workers in various states so that the vehicle suspension can reach the optimal state to meet the requirement of a user on the suspension comfort.

In order to achieve the purpose, the utility model firstly provides a damping adjustable shock absorber which comprises a shock absorber body and a damping adjusting knob arranged at the lower end of the shock absorber body.

Furthermore, the shock absorber body comprises an inner cylinder barrel and an outer cylinder barrel, the inner cavity of the inner cylinder barrel is used as a working cylinder, the reserved gap between the inner cylinder barrel and the outer cylinder barrel is used as an oil storage cylinder, the outer cylinder barrel and the upper end of the inner cylinder barrel are connected in a sealing mode through a guider, a piston rod is inserted in the guider, a restoring valve system is arranged at the lower end of the piston rod, the lower ends of the outer cylinder barrel and the inner cylinder barrel are connected in a sealing mode through a compression valve system, and the damping adjusting knob is used for adjusting the oil liquid circulation volume between the working cylinder and the oil storage cylinder through the compression valve system.

Furthermore, the compression valve system comprises a compression valve seat, the bottom of the compression valve seat is communicated with the oil circulation cavity of the working cylinder and the oil storage cylinder, a compression valve body is further arranged on the compression valve seat, a first through hole communicated with the oil circulation cavity and a second through hole communicated with the working cylinder are arranged in the compression valve body, the compression valve body is correspondingly provided with a valve core used for adjusting the oil circulation volume between the first through hole and the second through hole, and the lower end of the valve core extends into the cylinder cavity of the connecting sleeve and receives adjusting power through the damping adjusting knob.

Furthermore, a valve cavity is arranged between the first through hole and the second through hole, the upper end of the valve core extends into the valve cavity and is arranged into a conical structure matched with the second through hole, and at least one section of the valve core is in threaded fit with the compression valve body.

Furthermore, the top of a communication channel between the oil liquid circulation cavity and the working cylinder is provided with a compression circulation valve plate, the bottom of at least part of the communication channel is also provided with a compression valve plate, and a circle of boss used for being abutted to the compression valve plate is further formed on the side wall of the compression valve body.

Furthermore, the bottom of the oil liquid circulation cavity is provided with an outer cylinder barrel end socket which is in sealed sleeve joint with the outer cylinder barrel, the outer cylinder barrel end socket is provided with a valve core mounting opening, the valve core is in sleeve joint with the valve core mounting opening, and at least one circle of first sealing ring is arranged between the valve core and the inner wall of the valve core mounting opening.

Furthermore, the valve core installing port of the lower end face of the outer cylinder barrel end socket is inwards sunk to form a circular concave table, the damping adjusting knob is arranged in the concave table, the center of the damping adjusting knob is connected with the tail end of the valve core through a set clamping hole in a clamped mode, a plurality of gear holes are uniformly distributed in the table board of the concave table according to the shape of the ring, step collision beads which correspond to the gear holes in a one-to-one mode are arranged on the top face of the damping adjusting knob, when the damping adjusting knob rotates, the step collision beads roll among the gear holes in the table board of the concave table in sequence, and the valve core is driven to be fed or withdrawn in the clamping hole along the axial direction of the valve core.

Furthermore, a circle of annular flange is arranged on the periphery of the damping adjusting knob, and a cover plate matched with the flange is fixed at the bottom of the outer cylinder barrel end socket through screws.

Furthermore, a tower spring is abutted on the compression flow valve plate, and a compression nut for abutting the tower spring is connected with the upper end extending part of the compression valve body in a threaded manner.

Furthermore, a locking ring used for being abutted and matched with the connecting sleeve is sleeved on the outer cylinder barrel wall at the upper end of the connecting sleeve.

Furthermore, a restoring adjusting mechanism is arranged on the piston rod corresponding to the restoring valve system and used for adjusting the oil liquid circulation volume between the upper working cylinder and the lower working cylinder of the piston rod.

Furthermore, the reset valve system comprises a reset valve seat, and an oil liquid circulation hole is formed in the reset valve seat; the reset adjusting mechanism comprises a valve needle mounting hole formed in the piston rod and a valve needle inserted in the valve needle mounting hole, the upper end of the valve needle extends out of the piston rod and is provided with a reset adjusting knob, the lower end of the piston rod is arranged into a conical structure matched with the oil liquid circulation hole, at least one circle of second sealing ring is arranged between the valve needle and the inner wall of the valve needle mounting hole, the valve needle is in threaded fit with the rod body of the piston rod, and when the reset adjusting knob rotates, the valve needle is axially fed or retracted along the valve needle.

Compared with the prior art, the utility model has the following remarkable effects:

(1) by utilizing the connecting sleeve with the adjusting window, the length of the shock absorber can be adaptively adjusted according to the stroke of the suspension, and the damping adjusting knob can be operated through the adjusting window under the condition that the shock absorber is not detached from the suspension, so that the universality of the shock absorber is improved, and the convenience of damping adjustment is increased;

(2) by utilizing the conical structure of the valve core, when the valve core is fed axially, the conical structure can control the flow cross section of the channel opening at the bottom of the second through hole, so that the oil flow volume between the second through hole and the first through hole is changed linearly, and when the damping shock absorber is applied, the matching performance of compression damping can be accurately adjusted according to the requirements of users, thereby ensuring that the vehicle suspension performance is in an optimal state;

(3) in the compression damping adjustment process, the step collision bead is matched with the gear hole, so that a user can obtain clear gear feedback, and meanwhile, under the action of the clamping hole, the valve core is matched with the threaded connection between the valve core and the compression valve body, so that the feeding amount of the valve core can be adjusted when the damping adjustment knob rotates, and the use is more convenient;

(4) the oil liquid circulation structure of damping shock absorber has been improved, heat dispersion is improved, can reduce the operation temperature of shock absorber in the high frequency use to the life of damping shock absorber is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a front view of the first embodiment

FIG. 2 is a schematic diagram of the internal structure of the first embodiment

FIG. 3 is a schematic structural view of a shock absorber body according to an embodiment;

FIG. 4 is a schematic diagram of a compression valve train according to an embodiment;

FIG. 5 is a schematic view showing the structure of a return adjustment mechanism according to the first embodiment;

FIG. 6 is an enlarged view of a portion A of FIG. 1;

FIG. 7 is a top view of a damping adjustment knob according to one embodiment;

reference numbers in the figures: 1-outer cylinder barrel end socket, 2-oil liquid circulation cavity, 3-compression valve body, 4-first through hole, 5-second through hole, 6-valve core, 7-communication channel, 8-compression valve seat, 9-compression circulation valve plate, 10-compression valve plate, 11-valve core mounting port, 12-first sealing ring, 13-concave table, 14-damping adjusting knob, 15-clamping hole, 16-step collision bead, 17-flange, 18-cover plate, 19-compression nut, 20-tower spring, 21-working cylinder, 22-oil storage cylinder, 23-piston rod, 24-guider, 25-restoration valve system, 26-restoration valve seat, 27-oil liquid circulation hole, 28-valve needle, 29-valve needle mounting port, 30-second sealing ring, 31-reset adjusting knob, 32-gear mark, 33-O type sealing ring, 34-boss, 35-outer cylinder, 36-inner cylinder, 37-connecting sleeve, 38-adjusting window, 39-locking ring and 40-mounting ear.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Fig. 1 and 2 show a first embodiment of the utility model: the damping-adjustable shock absorber comprises a shock absorber body and a damping adjusting knob 14 arranged at the lower end of the shock absorber body, and is characterized in that a connecting sleeve 37 is sleeved on the outer side wall of the lower end of the shock absorber body through threads, an adjusting window 38 is formed in the wall of the connecting sleeve 37, corresponding to the damping adjusting knob 14, and an installation lug 40 used for being connected with a vehicle to be suspended is further arranged at the lower end of the connecting sleeve 37.

Referring to fig. 3, in a specific implementation, the shock absorber body includes an inner cylinder tube 36 and an outer cylinder tube 35, an inner cavity of the inner cylinder tube 36 serves as the working cylinder 21, a reserved gap between the inner cylinder tube 36 and the outer cylinder tube 35 serves as the oil storage cylinder 22, the upper end of the outer cylinder tube 35 and the upper end of the inner cylinder tube 36 are hermetically connected through a guider 24, a piston rod 23 is inserted into the guider, a restoring valve system 25 is arranged at the lower end of the piston rod 23, the lower ends of the outer cylinder tube 35 and the inner cylinder tube 36 are hermetically connected through a compression valve system, and the damping adjusting knob 14 is used for adjusting an oil circulation volume between the working cylinder 21 and the oil storage cylinder 22 through the compression valve system.

As can be seen from fig. 4, the compression valve train includes a compression valve seat 8 whose bottom forms an oil passage chamber 2 communicating the working cylinder 21 and the reserve cylinder 22; the compression valve seat 8 is further provided with a compression valve body 3, a first through hole 4 communicated with the oil liquid circulation cavity 2 and a second through hole 5 communicated with the working cylinder 21 are arranged in the compression valve body 3, a valve core 6 used for adjusting the oil liquid circulation volume between the first through hole 4 and the second through hole 5 is further arranged corresponding to the compression valve body 3, and the lower end of the valve core 6 extends into the cylinder cavity of the connecting sleeve 37 and receives adjusting power through the damping adjusting knob 14. A valve cavity is arranged between the first through hole 4 and the second through hole 5, the upper end of the valve core 6 extends into the valve cavity and is arranged into a conical structure matched with the second through hole 5, and at least one section of the valve core 6 is in threaded fit with the compression valve body 3. The oil liquid circulation cavity 2 and the top of the communication channel 7 of the working cylinder 21 are provided with a compression circulation valve plate 9, at least part of the bottom of the communication channel 7 is also provided with a compression valve plate 10, and the side wall of the compression valve body 3 is also provided with a circle of boss 34 which is used for being abutted to the compression valve plate 10.

In order to avoid oil leakage, the bottom of the oil circulation cavity 2 is provided with an outer cylinder barrel end socket 1 which is hermetically sleeved with the outer cylinder barrel 35, the outer cylinder barrel end socket 1 is provided with a valve core mounting port 11, the valve core 6 is sleeved in the valve core mounting port 11, and at least one circle of first sealing ring 12 is further arranged between the valve core 6 and the inner wall of the valve core mounting port 11.

During specific implementation, the valve core mounting port 11 of the lower end face of the outer cylinder barrel end socket 1 is inwards recessed to form a circular concave table 13, a damping adjusting knob 14 is arranged in the concave table 13, the center of the damping adjusting knob 14 is clamped with the tail end of the valve core 6 through a clamping hole 15, a plurality of gear holes are uniformly distributed on the table top of the concave table 13 according to the shape of a ring, step contact balls 16 corresponding to the gear holes one to one are arranged on the top face of the damping adjusting knob 14, and when the damping adjusting knob 14 rotates, the step contact balls 16 sequentially roll among the gear holes on the table top of the concave table 13 and drive the valve core 6 to feed or retreat in the clamping hole 15 along the axial direction of the valve core. Preferably, a plurality of annularly distributed gear marks 32 are further arranged on the disc surface of the damping adjusting knob 14, and the gear marks 32 correspond to the gear holes one to one.

Referring to fig. 7, taking 12 steps as an example, that is, the number of the step marks 32 distributed on the disc surface of the damping adjustment knob 14 is 1, 2, 3, 4, 11, 12, and the number of the step holes distributed on the bottom surface of the circular concave table 13 is also set to 12. When adjusting the damping, thereby rotatory damping adjust knob 14 drives case 6 and rotates, case 6 rotates and makes step touch 16 roll along case 6's axis under the effect of placing the hole, when "the" sound "appears, it says that the step touches 16 rolls to the next gear downthehole to touch the pearl, make the clearance between case 6 toper structure and the 5 bottom passways of second through-hole change, thereby adjust the aperture of second through-hole 5, change the fluid circulation volume between first through-hole 4 and second through-hole 5, realize adjusting compression damping's technological effect.

As shown in fig. 3 and 4, in order to prevent the damping adjustment knob 14 from falling out of the recessed table 13, a ring-shaped flange 17 is provided on the circumferential side of the damping adjustment knob 14, and a cover plate 18 that engages with the flange 17 is fixed to the bottom of the outer cylinder head 1 by screws.

In order to realize the rapid assembly of the compression flow valve plate 9, a tower spring 20 is abutted on the compression flow valve plate 9, and a compression nut 19 for abutting against the tower spring 20 is connected with an upper end extending part of the compression valve body 3 in a threaded manner.

As shown in fig. 1 and 2, in order to ensure the connection strength between the connection sleeve 37 and the outer cylinder 35, a locking ring 39 for abutting engagement with the connection sleeve 37 is further fitted around the upper end of the connection sleeve 37 and the wall of the outer cylinder 35.

It can be understood that, in this embodiment, the first through hole 4 is a normally open through hole, in other embodiments, the second through hole 5 may also be a normally open through hole, and when the second through hole 5 is a normally open through hole, the end of the valve element 6 provided with the conical structure cooperates with the first through hole 4 to achieve the technical effect of linearly changing the flow volume of the oil in the valve cavity.

As shown in fig. 5, in order to achieve the technical effects of dual adjustment of the rebound damping and the compression damping of the shock absorber, a rebound adjusting mechanism is further disposed on the piston rod 23 corresponding to the rebound valve system 25, and the rebound adjusting mechanism is used for adjusting the oil flow volume between the upper cylinder 21 and the lower cylinder 21. The recovery valve system 25 comprises a recovery valve seat 26, and an oil liquid through hole 27 is formed in the recovery valve seat 26; the recovery adjusting mechanism comprises a valve needle mounting port 29 arranged in the piston rod 23 and a valve needle 28 inserted in the valve needle mounting port 29, the upper end of the valve needle 28 extends out of the piston rod 23 and is provided with a recovery adjusting knob 31, and the lower end of the piston rod 23 is arranged into a conical structure matched with the oil liquid circulation hole 27; in order to avoid oil leakage from the gap between the needle 28 and the needle mounting opening 29, at least one ring of second sealing ring 30 is arranged between the inner walls of the needle 28 and the needle mounting opening 29, and at least one section of the needle 28 is in threaded fit with the rod body of the piston rod 23, and when the reset adjusting knob 31 rotates, the needle 28 is axially advanced or retracted.

The oil passage hole 27 is composed of an axial hole communicating with the lower cylinder 21 of the recovery valve train 25 and a radial hole (not shown) communicating with the upper cylinder 21 of the recovery valve train 25, and the volume of oil passage between the axial hole and the radial hole is adjusted by the axial advance and retreat of the needle in the axial direction thereof, thereby adjusting the recovery damping.

As can be seen from FIG. 6, in order to ensure the sealing performance of the shock absorber cylinder, an O-ring 33 is required between the guide 24 and the inner wall of the reservoir 22 to achieve sealing; in order to overcome the defect that the O-ring 33 is easily damaged when the guide 24 is assembled, the side wall of the guide is set to have a certain taper, so that the O-ring 33 is pressed by the side wall of the guide 24 during the screwing process of the guide 24, gradually expands under the effect of the taper of the side wall of the guide 24, and finally forms a sealing effect with the inner wall of the reserve tube 22. During assembly, O-ring 33 does not rotate with guide 24, thereby avoiding frictional damage to the inner wall of reserve tube 22.

It should be noted that, in order to obtain clear gear feedback during the return damping adjustment, the return adjustment knob 31 may refer to the setting manner of the damping adjustment knob 14.

The principle of the utility model is as follows:

when the piston rod 23 is compressed downwards, a part of oil in the working cylinder 21 enters the oil circulation cavity 2 and the communication channel 7 of the working cylinder 21 through the compression circulation valve plate 9, then the compression valve plate 10 is opened through the communication channel 7 to generate compression resistance, and then the oil enters the oil storage cylinder 22 through the oil circulation cavity 2. The other part of the oil in the working cylinder 21 passes through the second through hole 5 of the compression valve body 3, generates compression resistance under the action of the valve core 6, then flows into the oil flow cavity 2 through the valve cavity and the first through hole 4, and finally flows into the oil storage cylinder 22 from the oil flow cavity 2. In the installation state of the shock absorber, a worker can extend fingers into the adjusting window 38, and the damping adjusting knob 14 is turned to change the oil liquid circulation volume between the second through hole 5 and the first through hole 4, so that the corresponding compression resistance is changed along with the change, and the technical effect of adjusting the compression resistance is achieved; on the other hand, adjusting the restoring damping of the restoring valve train 25 can cause the needle 28 to change the oil flow volume in the oil flow hole 27 by rotating the restoring adjusting knob 31.

In summary, according to the height of the vehicle body, the connecting position of the connecting sleeve 37 and the outer cylinder 35 can be adjusted, and then the locking ring 39 is adjusted to realize abutting locking positioning, so as to change the length of the shock absorber, and by designing the connecting sleeve 37 with the adjusting window 38, the damping adjusting knob can be operated through the adjusting window 38 under the state that the shock absorber is not detached from the suspension, so that the universality of the shock absorber is improved, and the convenience of damping adjustment is increased; by utilizing the conical structure of the valve core 6, when the valve core 6 is fed along the axial direction, the conical structure can control the flow cross section of the channel opening at the bottom of the second through hole 5, so that the oil flow volume between the second through hole 5 and the first through hole 4 is changed linearly, and when the damping shock absorber is applied to a damping shock absorber, the matching property of compression damping after damping adjustment can be accurately adjusted and restored according to the requirements of a user, so that the suspension performance of a vehicle is ensured to be in an optimal state; in the compression damping adjustment process, the step collision bead 16 is matched with the gear hole, so that a user can obtain clear gear feedback, and meanwhile, under the action of the clamping hole 15, the valve core 6 is matched with the threaded connection between the compression valve body 3, so that the feeding amount of the valve core 6 can be adjusted when the damping adjustment knob 14 rotates, and the use is more convenient; the oil liquid circulation structure of damping shock absorber has been improved, heat dispersion is improved, can reduce the operation temperature of shock absorber in the high frequency use to the life of damping shock absorber is prolonged.

While the utility model has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the utility model.

Claims

1. The damping-adjustable shock absorber comprises a shock absorber body and a damping adjusting knob arranged at the lower end of the shock absorber body, and is characterized in that a connecting sleeve is sleeved on the outer side wall of the lower end of the shock absorber body through threads, an adjusting window is formed in the wall of the connecting sleeve corresponding to the damping adjusting knob, and an installation lug used for being connected with a vehicle to be suspended is further arranged at the lower end of the connecting sleeve.

2. The damping adjustable shock absorber of claim 1, wherein the shock absorber body comprises an inner cylinder barrel and an outer cylinder barrel, the inner cavity of the inner cylinder barrel is used as a working cylinder, the reserved gap between the inner cylinder barrel and the outer cylinder barrel is used as an oil storage cylinder, the upper end of the outer cylinder barrel and the upper end of the inner cylinder barrel are hermetically connected through a guider, a piston rod is inserted in the guider, the lower end of the piston rod is provided with a reset valve system, the lower ends of the outer cylinder barrel and the inner cylinder barrel are hermetically connected through a compression valve system, and the damping adjusting knob is used for adjusting the oil circulation volume between the working cylinder and the oil storage cylinder through the compression valve system.

3. The damping adjustable shock absorber according to claim 2, wherein the compression valve system includes a compression valve seat, an oil flow chamber communicating the working cylinder and the reservoir cylinder is formed at a bottom of the compression valve seat, a compression valve body is further disposed on the compression valve seat, a first through hole communicating with the oil flow chamber and a second through hole communicating with the working cylinder are disposed in the compression valve body, a spool for adjusting a flow volume of oil between the first through hole and the second through hole is further disposed in the compression valve body, and a lower end of the spool extends into the cylinder chamber of the connection sleeve and receives an adjusting power through the damping adjusting knob.

4. The damped tunable shock absorber of claim 3, wherein a valve chamber is disposed between the first through hole and the second through hole, an upper end of the valve core extends into the valve chamber and is disposed in a tapered configuration adapted to the second through hole, and at least one section of the valve core is in threaded engagement with the compression valve body.

5. The damping adjustable shock absorber as set forth in claim 3, wherein a compression flow valve is disposed on a top of a communication passage between the oil flow chamber and the working cylinder, a compression valve is disposed on a bottom of at least a portion of the communication passage, and a ring of boss for abutting against the compression valve is formed on a sidewall of the compression valve body.

6. The damping adjustable shock absorber as set forth in claim 3, wherein the bottom of the oil flow chamber is provided with an outer cylinder end socket which is sealingly sleeved with the outer cylinder, the outer cylinder end socket is provided with a valve core mounting opening, the valve core is sleeved in the valve core mounting opening, and at least one ring of first sealing ring is further disposed between the valve core and the inner wall of the valve core mounting opening.

7. The damping adjustable shock absorber as set forth in claim 6, wherein the periphery of the valve core mounting opening on the lower end face of the outer cylinder head is recessed inward to form a circular recessed table, the damping adjusting knob is disposed in the recessed table, and the center of the damping adjusting knob is clamped to the end of the valve core through a clamping hole, a plurality of gear holes are uniformly distributed on the table top of the recessed table, step collision beads corresponding to the gear holes one by one are disposed on the top face of the damping adjusting knob, and when the damping adjusting knob rotates, the step collision beads roll between the gear holes on the table top in sequence and drive the valve core to feed or retreat in the clamping hole along the axial direction thereof.

8. The damping adjustable shock absorber as set forth in claim 7, wherein a ring-shaped flange is provided on the periphery of said damping adjustment knob, and a cover plate fitted to said flange is fixed to the bottom of said outer cylinder shell head by means of screws.

9. The damped tunable shock absorber of claim 5, wherein a tower spring is abutted against the compression flow valve plate, and a compression nut for abutting against the tower spring is threadedly connected to an upper end extension of the compression valve body.

10. The damped tunable shock absorber according to any one of claims 1 to 9, wherein a locking ring for abutting engagement with the connection sleeve is further coupled to the shock absorber body at the upper end of the connection sleeve.