CN108775369B

CN108775369B - Shock absorber and vehicle with same

Info

Publication number: CN108775369B
Application number: CN201810565118.7A
Authority: CN
Inventors: 侯建勇
Original assignee: BAIC Motor Co Ltd
Current assignee: BAIC Motor Co Ltd
Priority date: 2018-06-04
Filing date: 2018-06-04
Publication date: 2020-05-19
Anticipated expiration: 2038-06-04
Also published as: CN108775369A

Abstract

The invention discloses a shock absorber and a vehicle with the same. This shock absorber includes: an oil storage cylinder; the bottom valve assembly comprises a bottom valve main body and an adjusting block, the bottom valve main body seals a bottom opening of the working cylinder, a plurality of bottom valve liquid flow holes are formed in the bottom valve main body and are communicated with the working cylinder and the oil storage cylinder, and the position of the adjusting block relative to the bottom valve main body can be adjusted to change the oil passing area of the bottom valve liquid flow holes; one end of the connecting rod, which extends into the working cylinder, is connected with a piston; and the connecting rod penetrates through the oil seal, and the oil seal seals the top openings of the working cylinder and the oil storage cylinder. According to the shock absorber, the size of the liquid flow of the working cylinder can be adjusted by changing the oil passing area of the liquid flow hole of the bottom valve, and the damping force value of the shock absorber is further adjusted, so that the shock absorber can be matched with different damping force values under different vehicle running conditions, and the damping force value is kept in an optimal state all the time.

Description

Shock absorber and vehicle with same

Technical Field

The invention relates to the field of automobiles, in particular to a shock absorber and a vehicle with the same.

Background

The shock absorber is one of key parts forming an automobile suspension system, and the setting of the damping force value of the shock absorber can influence the performance of the whole automobile such as the operation stability, the steering response speed and the riding comfort. The optimal damping force values of different road surface conditions are required, the damping force values of the shock absorbers are often designed in a compromise mode in the chassis training process of the traditional automobile, in other words, once the shock absorbers are designed, the damping force values of the shock absorbers are determined, and therefore the shock absorbers cannot meet the optimal damping force values required under all running conditions.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. To this end, the invention proposes a vibration damper whose damping force value is adjustable.

The invention also provides a vehicle with the shock absorber.

A shock absorber according to an embodiment of the present invention includes: an oil storage cylinder; the working cylinder, the working cylinder sets up in the oil storage section of thick bamboo, the bottom of working cylinder is provided with the bottom valve assembly, the bottom valve assembly includes: the bottom valve body seals a bottom opening of the working cylinder, a plurality of bottom valve liquid flow holes are formed in the bottom valve body and are communicated with a working cavity in the working cylinder and an oil storage cavity between the working cylinder and the oil storage barrel, and the position of the adjusting block relative to the bottom valve body is adjustable to change the oil passing area of the bottom valve liquid flow holes; one end of the connecting rod, which extends into the working cylinder, is connected with a piston; and the connecting rod penetrates through the oil seal, and the oil seal seals the top opening of the working cylinder and the oil storage cylinder.

According to the shock absorber provided by the embodiment of the invention, the damping force value of the shock absorber can be adjusted by changing the oil through area of the bottom valve liquid flow hole, so that the shock absorber can be matched with the optimal damping force value under different vehicle running conditions, and the running performance of a vehicle is improved.

According to some embodiments of the invention, the adjustment block comprises: the adjusting device comprises a first adjusting block and a second adjusting block, wherein a plurality of first liquid flow holes are formed in the first adjusting block, a plurality of second liquid flow holes are formed in the second adjusting block, the first adjusting block is slidably arranged on a bottom valve main body to change the overlapping area of the first liquid flow holes and the corresponding bottom valve liquid flow holes, and the second adjusting block is slidably arranged on the bottom valve main body to change the overlapping area of the second liquid flow holes and the corresponding bottom valve liquid flow holes.

Further, the base valve assembly further comprises: a cam disposed between the first adjusting block and the second adjusting block, a distance between the first adjusting block and the second adjusting block changing with rotation of the cam; and the driving device is used for driving the cam to rotate.

Further, the driving device drives the first adjusting block and the second adjusting block to approach or separate from each other in the radial direction of the base valve main body through the cam.

Optionally, the first adjusting block and the second adjusting block are both semicircular disc-shaped adjusting blocks.

According to some embodiments of the invention, the first adjustment block has a first cam lever receiving half slot and a first cam flange receiving half slot, the second adjustment block has a second cam lever receiving half slot and a second cam flange receiving half slot, the first cam lever receiving half slot and the second cam lever receiving half slot enclose a cam lever receiving slot when the first adjustment block is in contact with the second adjustment block, and the first cam flange receiving half slot and the second cam flange receiving half slot enclose a cam flange receiving slot;

the cam includes: the cam flange is arranged in the cam flange accommodating groove.

Optionally, the cam lever receiving groove is a cylindrical groove and the cam flange receiving groove is a cubic groove.

According to some embodiments of the invention, the first adjustment block has a guide rod, and the second adjustment block has a guide hole, and the guide rod is in penetrating fit with the guide hole.

Further, the base valve assembly further comprises: pre-tightening the spring and the nut; the guide rod is a threaded rod, the pre-tightening spring is sleeved at one end, extending out of the guide hole, of the guide rod, and the nut is matched with the guide rod to keep the pre-tightening spring in a compressed state, so that energy is stored when the first adjusting block and the second adjusting block are far away.

Specifically, the first adjusting block includes: the first vertical plate is perpendicular to the first flat plate, the first vertical plate is provided with a first cam rod accommodating half groove, and the two guide rods are symmetrically arranged on two sides of the first cam rod accommodating half groove;

the second adjustment block includes: the second vertical plate is perpendicular to the second flat plate, the second vertical plate is provided with a second cam rod accommodating half groove, and the two guide holes are symmetrically arranged on two sides of the second cam rod accommodating half groove.

Furthermore, a first upper chute is arranged on one side of the first flat plate, which is far away from the first vertical plate, and a second upper chute is arranged on one side of the second flat plate, which is far away from the second vertical plate;

the bottom valve main body is provided with a first adjusting block slide rail and a second adjusting block slide rail, when the cam rotates, the first upper chute slides along the first adjusting block slide rail, and the second upper chute slides along the second adjusting block slide rail.

According to some embodiments of the invention, the base valve assembly further comprises: the driving device is fixed on the driving device mounting seat, and the driving device mounting seat is fixed at the bottom of the working cylinder through the fixing nut.

Further, the bottom of working cylinder is provided with the nut mount table, fixation nut includes: cooperation platform and internal thread hole, the hole aperture of cooperation platform is less than the external diameter of nut mount table just is greater than the external diameter of working cylinder, the hole aperture in internal thread hole is greater than the hole aperture of cooperation platform.

Furthermore, the outer peripheral surface of the driving device mounting seat is provided with an external thread, and the driving device mounting seat is in threaded connection with the internal thread hole.

According to some embodiments of the present invention, a first lower slide rail is disposed on the first vertical plate, and a second lower slide rail is disposed on the second vertical plate;

an inner sliding groove is formed in the inner surface of the driving device mounting seat, the inner sliding groove is parallel to the first adjusting block sliding rail and the second adjusting block sliding rail, and the first lower sliding rail and the second lower sliding rail are suitable for sliding along the inner sliding groove.

Further, the first upper chute and the first lower slide rail are both perpendicular to the first vertical plate, and the second upper chute and the second lower slide rail are both perpendicular to the second vertical plate.

Optionally, a cam rod through hole and a liquid flow through hole are formed in the driving device mounting seat, the cam rod penetrates through the cam rod through hole, and the liquid flow through hole is formed in the outer side of the inner sliding groove.

Furthermore, the number of the inner sliding grooves is two, and the two inner sliding grooves are symmetrically arranged on two sides of the cam rod via hole.

According to another aspect of the present invention, a vehicle includes the shock absorber described above.

Drawings

FIG. 1 is a schematic perspective view of a shock absorber;

FIG. 2 is a schematic view of the assembly of the connecting rod, oil seal, working cylinder and base valve assembly;

FIG. 3 is a schematic view of a linkage, oil seal and base valve assembly;

FIG. 4 is a schematic view of the assembly of the base valve assembly with the working cylinder;

FIG. 5 is an assembly schematic of the adjustment block, cam, drive, pre-tightening spring and nut;

FIG. 6 is an exploded view of the adjustment block, cam, drive, preload spring and nut;

FIG. 7 is a bottom schematic view of the base valve body;

FIG. 8 is a top schematic view of the base valve body;

FIG. 9 is a bottom schematic view of the adjustment block, cam, drive, pre-tightening spring and nut;

FIG. 10 is a schematic view of the assembly of the first and second set blocks with the cam;

FIG. 11 is a bottom schematic view of a first set block;

FIG. 12 is a top schematic view of a first set block;

FIG. 13 is a bottom schematic view of a second set block;

FIG. 14 is a top schematic view of a second set block;

FIG. 15 is a perspective view of the cam;

FIG. 16 is a perspective view of a pretension spring and nut;

FIG. 17 is a perspective view of the cylinder;

FIG. 18 is a perspective view of the retaining nut;

fig. 19 is a perspective view of the drive unit mount.

Reference numerals:

the shock absorber 100, the oil storage cylinder 10, the working cylinder 20, the nut mounting table 201, the bottom valve assembly 30, the bottom valve main body 1, the bottom valve fluid hole 11, the inner bottom valve fluid hole 111, the outer bottom valve fluid hole 112, the first adjusting block slide rail 12, the second adjusting block slide rail 13, the bottom valve bottom wall 14, the bottom valve peripheral wall 15, the first adjusting block 2, the first flat plate 21, the first vertical plate 22, the first fluid hole 23, the first cam rod receiving half groove 24, the first cam flange receiving half groove 25, the guide rod 26, the first upper slide groove 27, the first lower slide rail 28, the second adjusting block 3, the second flat plate 31, the second vertical plate 32, the second fluid hole 33, the second cam rod receiving half groove 34, the second cam flange receiving half groove 35, the guide hole 36, the second upper slide groove 37, the second lower slide rail 38, the cam 4, the cam rod 41, the cam flange 42, the driving device 5, the pre-tightening spring 6, the nut 7, the fixing nut 8, The hydraulic drive device comprises a matching table 81, an internal thread hole 82, a drive device mounting seat 9, an external thread 91, an internal sliding groove 92, a cam rod through hole 93, a liquid flow through hole 94, a connecting rod 40 and an oil seal 50.

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 invention and are not to be construed as limiting the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Shock absorber 100 in accordance with an embodiment of the present invention is described in detail below with reference to figures 1-19.

Referring to fig. 1 to 4, a shock absorber 100 according to an embodiment of the present invention may include: reservoir 10, cylinder 20, base valve assembly 30, connecting rod 40, and oil seal 50.

Referring to fig. 1-2, a reservoir 10 is a reservoir of a shock absorber 100, a working tube 20 is disposed in the reservoir 10, a base valve assembly 30 is disposed at the bottom of the working tube 20, and as shown in connection with fig. 5-6, the base valve assembly 30 may include: the base valve comprises a base valve main body 1 and adjusting blocks (namely a first adjusting block 2 and a second adjusting block 3 which will be mentioned below), wherein the base valve main body 1 closes a bottom opening of a working cylinder 20, a plurality of base valve liquid flow holes 11 are formed in the base valve main body 1, the base valve liquid flow holes 11 are communicated with a working cavity in the working cylinder 20 and an oil storage cavity between the working cylinder 20 and an oil storage cylinder 10, and the position of the adjusting blocks relative to the base valve main body 1 is adjustable, so that the oil through area of the base valve liquid flow holes 11 is changed. The size of the liquid flow of the working cylinder 20 can be adjusted by changing the oil passing area of the bottom valve liquid flow hole 11, and then the damping force value of the shock absorber 100 is adjusted, so that the shock absorber 100 can meet different working conditions.

In the embodiment, the set block has set block fluid flow holes (i.e., a first fluid flow hole 23 and a second fluid flow hole 33, which will be mentioned later) therein, and when the set block is moved relative to the base valve body 1, the area of the overlap of the set block fluid flow holes and the base valve fluid flow hole 11 is changed, and thus, the oil passage area of the base valve fluid flow hole 11 is changed accordingly.

The adjusting block liquid flow hole is matched with the bottom valve liquid flow hole 11, and the oil passing area of the bottom valve liquid flow hole 11 is influenced. Specifically, when the trim block orifice and the base valve orifice 11 are completely overlapped, the oil passage area of the base valve orifice 11 is the largest, and at this time, the damping force value of the shock absorber 100 is the smallest, and when the trim block orifice and the base valve orifice 11 are partially overlapped, the oil passage area of the base valve orifice 11 becomes smaller, and at this time, the damping force value of the shock absorber 100 becomes larger. In other words, the oil passage area of base valve flow hole 11 is inversely proportional to the damping force value of shock absorber 100.

Connecting rod 40 is a rod structure, and connecting rod 40 can transmit the damping force value of shock absorber 100 to the vehicle body. The end of the connecting rod 40 extending into the working cylinder 20 is connected with a piston, the connecting rod 40 penetrates through the oil seal 50, and the oil seal 50 seals the top openings of the working cylinder 20 and the oil storage cylinder 10. In other words, the oil seal 50 is an upper seal cover of the connecting rod 40, the cylinder 20, and the oil reservoir 10, and is used to prevent oil in the cylinder 20 and the oil reservoir 10 from leaking.

In some embodiments, the outer diameter of the piston is equal to the inner diameter of the cylinder 20, such that when the piston moves down the inner wall of the cylinder 20, oil in the working chamber can enter the oil reservoir chamber through the base valve orifice 11, and when the piston moves up the inner wall of the cylinder 20, oil in the oil reservoir chamber can enter the working chamber through the base valve orifice 11.

Referring to fig. 7 to 8, the base valve body 1 includes: a bottom valve bottom wall 14 and a bottom valve peripheral wall 15, the bottom valve peripheral wall 15 extending from the upper side of the bottom valve bottom wall 14, a plurality of bottom valve liquid flow holes 11 arranged at intervals on the bottom valve bottom wall 14. The bottom valve peripheral wall 15 is press-fitted in the inner wall of the working cylinder 20 by interference fit, and the interference fit can ensure that the bottom valve main body 1 and the working cylinder 20 cannot move relatively. In some embodiments, a portion of the base valve perimeter wall 15 is located within the cylinder 20 and another portion extends from the bottom of the cylinder 20, thereby ensuring a larger working chamber volume within the cylinder 20 and thus a longer stroke of the connecting rod 40.

According to the shock absorber 100 provided by the embodiment of the invention, the relative position of the adjusting block and the base valve main body 1 is changed, so that the oil passing area of the base valve liquid flow hole 11 can be changed, the liquid flow size of the working cylinder 20 can be adjusted, and the damping force value of the shock absorber 100 can be changed, therefore, under different vehicle running conditions, the shock absorber 100 can be matched with different damping force values, the damping force values are kept in the optimal state constantly, and the performances of the vehicle, such as the operation stability, the steering response speed, the riding comfort and the like, are improved.

Referring to fig. 5, 9-10, the adjustment block may include: the first adjusting block 2 is provided with a plurality of first liquid flow holes 23, the second adjusting block 3 is provided with a plurality of second liquid flow holes 33, the first adjusting block 2 is slidably arranged on the bottom valve main body 1 to change the overlapping area of the first liquid flow holes 23 and the corresponding bottom valve liquid flow holes 11, and the second adjusting block 3 is slidably arranged on the bottom valve main body 1 to change the overlapping area of the second liquid flow holes 33 and the corresponding bottom valve liquid flow holes 11. The oil passage area of the base valve fluid hole 11 can be adjusted by adjusting the positions of the first adjusting block 2 and the second adjusting block 3 with respect to the base valve main body 1.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Further, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the embodiment shown in fig. 10, the number of the first and second flow holes 23 and 33 is three. In the embodiment shown in fig. 7, the number of the bottom valve ports 11 is twelve, and the twelve bottom valve ports 11 include six bottom valve ports 111 located on the inner side and six bottom valve ports 112 located on the outer side, and the six bottom valve ports 111 may be distributed at six vertices of a regular hexagon, and the six bottom valve ports 112 may be distributed at six vertices of another larger regular hexagon.

When the first adjusting block 2 is attached to the second adjusting block 3, the first fluid hole 23 and the second fluid hole 33 are respectively overlapped with the six inner bottom valve fluid holes 111 one by one, at this time, the oil passing area of the bottom valve fluid hole 11 is the largest, when the first adjusting block 2 is gradually separated from the second adjusting block 3, the overlapping area of the first fluid hole 23 and the inner bottom valve fluid hole 111, the overlapping area of the second fluid hole 33 and the inner bottom valve fluid hole 111 are gradually reduced, the oil passing area of the bottom valve fluid hole 11 is gradually reduced, and when the first adjusting block 2 is separated from the second adjusting block 3 to a certain distance, the first fluid hole 23 and the second fluid hole 33 can be overlapped with at least a part of the outer bottom valve fluid hole 112, so that the oil passing area of the bottom valve fluid hole 11 is further changed.

Further, referring to fig. 5-6 and 10, the base valve assembly 30 may further include: the adjusting device comprises a cam 4 and a driving device 5, wherein the cam 4 is arranged between the first adjusting block 2 and the second adjusting block 3, the distance between the first adjusting block 2 and the second adjusting block 3 is changed along with the rotation of the cam 4, and the driving device 5 is used for driving the cam 4 to rotate.

In other words, cam 4 is coupled to drive device 5, drive device 5 can transmit a rotational torque to cam 4, and drive device 5 drives first adjusting block 2 and second adjusting block 3 toward and away from each other in the radial direction of base valve body 1 via cam 4. That is to say, the driving device 5 drives the cam 4 to rotate by a certain angle according to the requirement of the working condition of the whole vehicle, so as to drive the first adjusting block 2 and the second adjusting block 3 to move relatively, so as to change the oil passing area of the bottom valve liquid flow hole 11, and further adjust the damping force value of the shock absorber 100, which is an automatic adjustment process, thereby ensuring that the shock absorber 100 can have the optimal damping force value all the time in the driving process.

In some embodiments, the drive means 5 is an electric motor. The motor can receive an electric signal transmitted by an Electronic Control Unit (ECU), and drive the cam 4 to rotate by a certain angle in real time to change the relative position of the first adjusting block 2 and the second adjusting block 3, so as to change the overlapping area of the adjusting block liquid flow hole and the bottom valve liquid flow hole 11.

Alternatively, first adjusting block 2 and second adjusting block 3 are both semi-circular disk-shaped adjusting blocks, as shown in fig. 9-10. Of course, the shapes of the first adjusting block 2 and the second adjusting block 3 are not limited thereto, for example, in some embodiments not shown, the first adjusting block 2 and the second adjusting block 3 may also be cubic adjusting blocks.

Referring to fig. 11-12, the first adjustment block 2 has a first cam lever receiving half slot 24 and a first cam flange receiving half slot 25, and referring to fig. 13-14, the second adjustment block 3 has a second cam lever receiving half slot 34 and a second cam flange receiving half slot 35, such that when the first adjustment block 2 is in contact with the second adjustment block 3 (i.e., the first upright plate 22 is attached to the second upright plate 32), the first cam lever receiving half slot 24 and the second cam lever receiving half slot 34 enclose a cam lever receiving slot, and the first cam flange receiving half slot 25 and the second cam flange receiving half slot 35 enclose a cam flange receiving slot.

Referring to fig. 15, the cam 4 may include: a cam lever 41 and a cam flange 42, the cam lever 41 being used to connect the driving device 5 with the cam flange 42 so as to transmit the rotational torque of the driving device 5 to the cam flange 42. The cam lever 41 is disposed in the cam lever receiving groove, and the cam flange 42 is disposed in the cam flange receiving groove.

Alternatively, the cam lever receiving slot is a cylindrical slot and the cam flange receiving slot is a cubic slot.

The first cam-lever receiving half-groove 24 and the second cam-lever receiving half-groove 34 are receiving grooves for the cam lever 41, and the first cam-flange receiving half-groove 25 and the second cam-flange receiving half-groove 35 are receiving grooves for the cam flange 42. The first cam flange accommodating half groove 25 and the second cam flange accommodating half groove 35 are provided with cam contact surfaces which are used for being in contact fit with the cam flange 42, and the relative positions of the first adjusting block 2 and the second adjusting block 3 are adjusted under the driving of the outer contour of the cam flange 42.

In a specific embodiment, the cam flange 42 may be an eccentric structure or a structure having a non-circular outer contour, for example, in the specific example of fig. 15, the cam flange 42 has a diamond structure in a plane perpendicular to the cam rod 41, the cam flange 42 has a long diagonal line and a short diagonal line, the cam flange receiving groove has a rectangular shape in a plane perpendicular to the cam rod 41, the long diagonal line of the cam flange 42 is equal to a long side of the cam flange receiving groove, and the short diagonal line of the cam flange 42 is equal to a short side of the cam flange receiving groove.

The cam 4 has an initial state in which the first adjustment block 2 and the second adjustment block 3 are bonded to each other and a separated state in which the first adjustment block 2 and the second adjustment block 3 are separated from each other. When the cam 4 is in an initial state, the first adjusting block 2 is attached to the second adjusting block 3 (i.e., the first vertical plate 22 is attached to the second vertical plate 32), the long diagonal of the cam flange 42 is parallel to the long side of the cam flange receiving groove, the short diagonal of the cam flange 42 is parallel to the short side of the cam flange receiving groove, and at this time, the first liquid flow hole 23 and the second liquid flow hole 33 are respectively overlapped with the six inner bottom valve liquid flow holes 111 one by one. When the cam 4 rotates to the separated state, the cam flange 42 gradually pushes the first vertical plate 22 and the second vertical plate 32 away towards both sides, so that the overlapping area of the first liquid flow hole 23, the second liquid flow hole 33 and the bottom valve liquid flow hole 11 is changed, and the purpose of changing the damping force value of the shock absorber 100 is achieved.

Referring to fig. 11 and 13, the first adjusting block 2 has a guide rod 26, the second adjusting block 3 has a guide hole 36, and the guide rod 26 is inserted into and engaged with the guide hole 36, so as to assemble the first adjusting block 2 and the second adjusting block 3. Guide rod 26 may function as a motion guide to ensure that first set block 2 and second set block 3 may be moved toward or away from each other along the length of guide rod 26.

Further, referring to fig. 9 and 16, the base valve assembly 30 may further include: a pre-tensioned spring 6 and a nut 7. The guide rod 26 is a threaded rod, the pre-tightening spring 6 is sleeved at one end, extending out of the guide hole 36, of the guide rod 26, the nut 7 is screwed at the free end of the guide rod 26, the nut 7 is matched with the guide rod 26 to keep the pre-tightening spring 6 in a compression state, so that the pre-tightening spring 6 can store energy when the first adjusting block 2 and the second adjusting block 3 are far away from each other, and under the elastic action of the pre-tightening spring 6, the first adjusting block 2 and the second adjusting block 3 have a tendency of being close to each other (namely being attached to each other).

By changing the position of the nut 7 on the guide rod 26, the initial compression degree of the pre-tightening spring 6 can be changed, and the initial fitting degree of the first adjusting block 2 and the second adjusting block 3 is also changed, when the first adjusting block 2 and the second adjusting block 3 are separated from each other, the pre-tightening spring 6 is further compressed, and the resistance on the first adjusting block 2 and the second adjusting block 3 is also larger.

Specifically, referring to fig. 11, the first adjusting block 2 may include: the first plate 21 and the first vertical plate 22, the first vertical plate 22 is perpendicular to the first plate 21, the first cam lever receiving half-groove 24 is formed on the first vertical plate 22, and two guide rods 26 are symmetrically arranged on both sides of the first cam lever receiving half-groove 24.

Referring to fig. 13, the second adjusting block 3 may include: a second plate 31 and a second upright plate 32, the second upright plate 32 being perpendicular to the second plate 31, a second cam-lever receiving half-groove 34 being formed on the second upright plate 32, and two guide holes 36 being symmetrically provided on both sides of the second cam-lever receiving half-groove 34. The two guide rods 26 are matched with the two guide holes 36, so that a good guiding effect can be achieved.

When the first vertical plate 22 and the second vertical plate 32 are in a fit state, the first flow holes 23 completely coincide with the corresponding bottom valve flow holes 11, and the second flow holes 33 completely coincide with the corresponding bottom valve flow holes 11.

Further, as shown in fig. 12 and 14, a first upper chute 27 is disposed on a side of the first flat plate 21 away from the first vertical plate 22, and a second upper chute 37 is disposed on a side of the second flat plate 31 away from the second vertical plate 32.

Referring to fig. 7, the base valve body 1 is provided with a first adjusting block slide rail 12 and a second adjusting block slide rail 13, and when the cam 4 rotates, the first upper slide groove 27 slides along the first adjusting block slide rail 12, and the second upper slide groove 37 slides along the second adjusting block slide rail 13. The first adjusting block slide rail 12 and the second adjusting block slide rail 13 are guiding mechanisms when the first adjusting block 2 and the second adjusting block 3 slide, and can ensure that the first adjusting block 2 and the second adjusting block 3 slide on the bottom valve main body 1 more stably and reliably.

Referring to fig. 4, 18-19, the base valve assembly 30 may further include: the driving device 5 is fixed on the driving device mounting seat 9, and the driving device mounting seat 9 is fixed at the bottom of the working cylinder 20 through the fixing nut 8. In other words, the fixing nut 8 is a large fastening nut for fixing the driving device mount 9 and the cylinder 20.

Further, as shown in fig. 17 to 18, a nut mounting table 201 is provided at the bottom of the cylinder 20, and the outer diameter of the nut mounting table 201 is larger than the outer diameter of the cylinder 20. The fixing nut 8 may include: the hole diameter of the inner hole of the matching platform 81 is smaller than the outer diameter of the nut mounting platform 201 and larger than the outer diameter of the working cylinder 20, and the hole diameter of the inner hole of the internal thread hole 82 is larger than the hole diameter of the inner hole of the matching platform 81. When the cylinder 20 is passed through the fixing nut 8 from below to above, the upper surface of the nut mounting table 201 is attached to the lower surface of the fitting table 81, that is, the nut mounting table 201 can be brought into contact with the fitting table 81 to prevent the cylinder 20 from coming off the top of the fixing nut 8.

Further, as shown in fig. 18 to 19, the outer peripheral surface of the driving device mounting seat 9 has an external thread 91, and the external thread 91 of the driving device mounting seat 9 is adapted to be screwed with the internal thread hole 82 of the fixing nut 8, so that the driving device mounting seat 9 and the fixing nut 8 can be fixed, and the working cylinder 20 and the fixing nut 8 are fixed, so that the driving device mounting seat 9 and the working cylinder 20 are indirectly fixed.

Referring to fig. 10-11 and 13, the first vertical plate 22 is provided with a first lower slide rail 28, and the second vertical plate 32 is provided with a second lower slide rail 38.

Referring to fig. 19, an inner sliding groove 92 is formed in the inner surface of the driving device mounting seat 9, the inner sliding groove 92 is parallel to the first adjusting block sliding rail 12 and the second adjusting block sliding rail 13, the first lower sliding rail 28 and the second lower sliding rail 38 are suitable for sliding along the inner sliding groove 92, and the inner sliding groove 92 is a guiding mechanism for the first adjusting block 2 and the second adjusting block 3 during sliding and plays a role in guiding, so that the first adjusting block 2 and the second adjusting block 3 can be ensured to slide more stably and reliably along the driving device mounting seat 9.

Further, referring to fig. 11 and 13, the first upper chute 27 and the first lower slide rail 28 are perpendicular to the first vertical plate 22, and the second upper chute 37 and the second lower slide rail 38 are perpendicular to the second vertical plate 32.

Alternatively, as shown in fig. 19, the driving device mounting base 9 is provided with a cam rod through hole 93 and a liquid flow through hole 94, the cam rod 41 is inserted through the cam rod through hole 93, and the liquid flow through hole 94 is provided outside the inner slide groove 92. The flow through holes 94 are through holes for the flow of oil within the shock absorber 100.

The driving device mount 9 includes a mount bottom wall and a mount peripheral wall, the inner slide groove 92, the cam rod via hole 93 and the liquid flow through hole 94 are provided on the mount bottom wall, and the external thread 91 is provided on the outer surface of the mount peripheral wall.

Further, two inner slide grooves 92 are provided, and the two inner slide grooves 92 are symmetrically disposed on both sides of the cam rod passing hole 93. The number of the liquid flow through holes 94 is two, and the two liquid flow through holes 94 are symmetrically arranged at the outer sides of the two inner chutes 92.

A vehicle according to another aspect of the present invention includes shock absorber 100 of the above-described embodiment.

In the description herein, references to the description of the terms "some embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A shock absorber, comprising:

an oil storage cylinder;

the working cylinder, the working cylinder sets up in the oil storage section of thick bamboo, the bottom of working cylinder is provided with the bottom valve assembly, the bottom valve assembly includes: bottom valve main part and adjusting block, the bottom valve main part is sealed the bottom opening of working cylinder, be provided with a plurality of bottom valve liquid flow holes in the bottom valve main part, bottom valve liquid flow hole intercommunication working chamber in the working cylinder and be located the working cylinder with oil storage chamber between the oil storage section of thick bamboo, the adjusting block for the position of bottom valve main part is adjustable in order to change the through oil area in bottom valve liquid flow hole, the adjusting block includes: the first adjusting block is provided with a plurality of first liquid flow holes, the second adjusting block is provided with a plurality of second liquid flow holes, the first adjusting block is slidably arranged on the bottom valve main body to change the overlapping area of the first liquid flow holes and the corresponding bottom valve liquid flow holes, and the second adjusting block is slidably arranged on the bottom valve main body to change the overlapping area of the second liquid flow holes and the corresponding bottom valve liquid flow holes;

one end of the connecting rod, which extends into the working cylinder, is connected with a piston;

and the connecting rod penetrates through the oil seal, and the oil seal seals the top opening of the working cylinder and the oil storage cylinder.

2. The shock absorber according to claim 1, wherein said base valve assembly further comprises: a cam disposed between the first adjusting block and the second adjusting block, a distance between the first adjusting block and the second adjusting block changing with rotation of the cam;

the driving device is used for driving the cam to rotate, and the driving device drives the first adjusting block and the second adjusting block to move close to or away from each other along the radial direction of the bottom valve main body through the cam.

3. The shock absorber according to claim 2, wherein said first adjustment block and said second adjustment block are each half disc shaped adjustment blocks, said first adjustment block having a first cam bar receiving half groove and a first cam flange receiving half groove, said second adjustment block having a second cam bar receiving half groove and a second cam flange receiving half groove, said first cam bar receiving half groove and said second cam bar receiving half groove enclosing a cam bar receiving groove when said first adjustment block is in contact with said second adjustment block, said first cam flange receiving half groove and said second cam flange receiving half groove enclosing a cam flange receiving groove, said cam bar receiving groove being a cylindrical groove, said cam flange receiving groove being a cubic groove;

4. The shock absorber according to claim 3, wherein said first adjustment block has a guide rod, said second adjustment block has a guide hole, and said guide rod is fitted through said guide hole;

the base valve assembly further comprises: pre-tightening the spring and the nut;

the guide rod is a threaded rod, the pre-tightening spring is sleeved at one end, extending out of the guide hole, of the guide rod, and the nut is matched with the guide rod to keep the pre-tightening spring in a compressed state, so that energy is stored when the first adjusting block and the second adjusting block are far away.

5. The shock absorber according to claim 4, wherein said first adjustment block comprises: the first vertical plate is perpendicular to the first flat plate, the first vertical plate is provided with a first cam rod accommodating half groove, and the two guide rods are symmetrically arranged on two sides of the first cam rod accommodating half groove;

6. The shock absorber according to claim 5, wherein a first upper chute is provided on a side of the first flat plate facing away from the first upright plate, and a second upper chute is provided on a side of the second flat plate facing away from the second upright plate;

7. The shock absorber according to claim 6, wherein said base valve assembly further comprises: the driving device is fixed on the driving device mounting seat, and the driving device mounting seat is fixed at the bottom of the working cylinder through the fixing nut.

8. The shock absorber according to claim 7, wherein a bottom of said working cylinder is provided with a nut mounting table, said fixing nut comprising: cooperation platform and internal thread hole, the hole aperture of cooperation platform is less than the external diameter of nut mount table just is greater than the external diameter of working cylinder, the hole aperture in internal thread hole is greater than the hole aperture of cooperation platform, the external screw thread has on the outer peripheral face of drive arrangement mount pad, the drive arrangement mount pad with internal thread hole spiro union cooperation.

9. The shock absorber according to claim 7, wherein a first lower slide rail is arranged on the first vertical plate, and a second lower slide rail is arranged on the second vertical plate;

10. The shock absorber according to claim 9, wherein the first upper chute and the first lower slide rail are both perpendicular to the first vertical plate, and the second upper chute and the second lower slide rail are both perpendicular to the second vertical plate.

11. The shock absorber according to claim 9, wherein said drive unit mount is provided with a cam rod through hole through which said cam rod passes and a fluid flow hole provided outside said inner slide groove.

12. A vehicle characterized by comprising a shock absorber according to any one of claims 1-11.