CN216242007U

CN216242007U - Damping-adjustable shock absorber

Info

Publication number: CN216242007U
Application number: CN202122840819.7U
Authority: CN
Inventors: 赵典锚
Original assignee: Wenzhou Tianyuan Industrial Co ltd
Current assignee: Wenzhou Tianyuan Industrial Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-04-08
Anticipated expiration: 2031-11-19

Abstract

The utility model discloses a damping-adjustable shock absorber which structurally comprises a working cylinder and a gasoline cylinder, wherein the working cylinder is connected with a piston rod assembly, the working cylinder and the gasoline cylinder are connected through a lower support, the gasoline cylinder is vertically divided into an air cavity and an oil cavity through a floating piston, the lower support is provided with an oil duct communicated with the working cylinder and provided with an assembling hole, the assembling hole is communicated with the oil duct and the oil cavity and internally provided with an oil guide seat, the center of the inner end of the oil guide seat is provided with an oil passing concave position, the opening end of the oil passing concave position is provided with a blocking cover, two ends of the oil passing concave position are respectively provided with a first through hole communicated with the oil duct and a second through hole communicated with the oil cavity, the bottom surface of the oil passing concave position is provided with an adjusting hole extending out of the oil guide seat, an adjusting piece is arranged in the adjusting hole, the outer end of the adjusting piece is connected with an adjusting knob, the adjusting piece is arranged at the position corresponding to the oil passing concave position, and the oil hole is sleeved with a blocking piece.

Description

Damping-adjustable shock absorber

Technical Field

The utility model relates to the technical field of shock absorbers, in particular to a shock absorber with adjustable damping.

Background

The shock absorber is used for inhibiting the shock generated when the spring rebounds after vibrating and the impact from the road surface, and is widely used in automobile shock absorption to accelerate the attenuation of the vibration of a frame and an automobile body so as to improve the running smoothness of an automobile. When the automobile passes through the uneven road surface, although the shock-absorbing spring can filter the vibration of the road surface, the spring can still reciprocate, and the shock absorber is used for inhibiting the spring from jumping.

The damping that the bumper shock absorber needs under the road surface condition of difference is big or small different, and the damping of current bumper shock absorber is adjusted without hindrance for the vehicle can't reach fine shock attenuation effect, influences the travelling safety nature of travelling comfort and the vehicle of taking, still can influence the life of bumper shock absorber simultaneously.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a shock absorber with adjustable damping to solve the technical problems.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a but damping adjustment's bumper shock absorber, including working cylinder and pneumatic cylinder, the working cylinder is connected with the piston rod subassembly, working cylinder and pneumatic cylinder pass through the undersetting and connect, the pneumatic cylinder is separated for air cavity and oil pocket from top to bottom through floating piston, the undersetting is provided with the oil duct of intercommunication working cylinder and has seted up the pilot hole, pilot hole intercommunication oil duct and oil pocket and built-in have lead the oil seat, lead the inner center department of oil seat and seted up the oil concave position and cross oil concave position open end and be provided with the blanking cover, cross oil concave position both ends and seted up the first through-hole that switches on with the oil duct respectively and the second through-hole that switches on with the oil pocket, cross the oil concave position bottom surface and seted up the regulation hole that extends to lead the oil seat outside, the regulation hole is built-in and is connected with adjust knob in the regulation piece and the regulation piece is located oil concave position corresponding department and has seted up the oilhole and has crossed oilhole outer lane cover and be equipped with the blanking piece.

The scheme has the advantages that: when meeting different road surface conditions and need adjust the damping force of bumper shock absorber, promote the shutoff piece through the cooperation of adjust knob and regulating part and realize the shutoff to crossing the oilhole for fluid can't flow through the oilhole, the velocity of flow that fluid got into the oil pocket this moment reduces, realizes the regulation to the damping force, makes the vehicle reach better shock attenuation effect, improves the security of going of vehicle and the life of bumper shock absorber.

The utility model is further configured to: the oil groove is formed in the outer diameter of the oil passing groove, the outer diameter of the oil passing groove is larger than the oil passing interval of the oil hole conduction, the outer ring of the adjusting piece is located between the inner bottom surface of the oil passing groove and the blocking cover, the return spring is sleeved on the inner bottom surface of the oil passing groove, and the outer ring of the adjusting piece located at one end, away from the blocking cover, of the blocking piece is sleeved with the extension ring.

The scheme has the advantages that: through setting up reset spring, avoid when the stifled piece is under non-shutoff state with the blanking cover laminating and influence the damping effect of bumper shock absorber.

The utility model is further configured to: the adjusting part comprises a columnar portion located at the inner end and a strip-shaped portion extending out of the adjusting hole, a strip-shaped groove matched with the strip-shaped portion is concavely arranged at the inner end of the adjusting knob, an internal thread is arranged on the side wall of the opening end in the adjusting hole, and an external thread matched with the internal thread is arranged on the outer wall of the extending ring.

The scheme has the advantages that: the adjusting knob can drive the adjusting piece to rotate more efficiently through the matching between the strip-shaped groove and the strip-shaped part.

The utility model is further configured to: the equidistant ring of blanking cover outer lane is equipped with a plurality of oil galleries, and every oil gallery all switches on with the oil pocket and crosses oily concave position, and the blanking cover is close to the one end of crossing oily concave position and is provided with stifled ring, and stifled ring slides and overlaps to locate the regulating part and just deviates from the one end butt of crossing the interior bottom surface of oily concave position with reset spring outside.

The scheme has the advantages that: the oil return efficiency is effectively improved through the cooperation between the reset spring and the blocking ring, so that the rebound of the shock absorber is more smooth.

The utility model is further configured to: the adjusting part is internally provided with a screw hole, the screw hole is communicated with the oil passing hole, the inner part of the screw hole is in threaded connection with a stud, the outer end of the stud penetrates through the adjusting knob and extends out of the adjusting knob, the outer end of the stud is connected with an adjusting nut, the inner end of the stud extends to form a blocking head part, the outer ring of the inner end of the stud is concavely provided with a sealing groove, and a sealing ring is arranged in the sealing groove.

The scheme has the advantages that: when the damping force needs to be adjusted in a small range, only the adjusting nut needs to be rotated, when the damping force needs to be adjusted in a large range, the adjusting knob needs to be rotated, and a user can rotate the adjusting nut or the adjusting knob according to the requirement, so that the use convenience and flexibility of the shock absorber are effectively improved.

The utility model is further configured to: the outer opening end of each adjusting hole is annularly provided with an adjusting concave position, a plurality of spring holes are annularly arranged on the bottom surface of each adjusting concave position at equal intervals, a compression spring is arranged in each spring hole, the outer end of each compression spring is connected with a ball, an adjusting knob is rotatably connected in each adjusting concave position, and an arc-shaped groove matched with each ball is annularly arranged on the inner end face.

The scheme has the advantages that: the friction coefficient of the adjusting knob during rotation is effectively reduced through the matching between the balls and the arc-shaped groove, so that the adjusting knob can rotate more conveniently and more conveniently, and labor is saved.

The utility model is further configured to: one end of the floating piston close to the oil cavity is concavely provided with a containing groove matched with the inner end head of the adjusting piece, a plurality of butterfly-shaped elastic pieces are sleeved on the outer ring of the adjusting piece and positioned between the floating piston and the plug cover, and the butterfly-shaped elastic pieces are arranged in pairs in an opposite mode.

The scheme has the advantages that: the butterfly-shaped elastic pieces are arranged in a pairwise opposite mode, so that the floating piston is retracted to be buffered, the rebound of the piston rod assembly is more gradual, and the damping performance of the damper is effectively improved.

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, and 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 these drawings without creative efforts.

FIG. 1 is a cross-sectional view of the overall construction of the present invention;

FIG. 2 is a schematic cross-sectional view of the structure of the cylinder of the present invention;

FIG. 3 is a schematic view of a portion of the structure at A in FIG. 1;

FIG. 4 is a schematic view of a portion of the structure shown at B in FIG. 1;

fig. 5 is a schematic structural view of the butterfly-shaped elastic piece of the present invention.

Reference numerals: 1. a working cylinder; 100. a pneumatic cylinder; 101. a piston rod assembly; 102. a lower support; 2. a floating piston; 200. an air cavity; 201. an oil chamber; 202. an oil passage; 203. an assembly hole; 204. a containing groove; 205. a butterfly-shaped elastic sheet; 3. an oil guide seat; 300. oil passing concave positions; 301. a first through hole; 302. a second through hole; 303. an adjustment hole; 304. an internal thread; 305. an external thread; 4. an adjustment member; 400. adjusting a knob; 401. an oil passing hole; 402. an extension ring; 403. a columnar portion; 404. a strip portion; 405. a strip-shaped groove; 406. a screw hole; 407. a stud; 408. adjusting the nut; 409. plugging the head part; 410. a sealing groove; 411. a seal ring; 5. plugging pieces; 500. an oil passing groove; 501. a return spring; 6. blocking the cover; 600. an oil return hole; 601. plugging a ring; 7. adjusting the concave position; 700. a spring hole; 701. a compression spring; 702. a ball bearing; 703. an arc-shaped groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a damper with adjustable damping according to an embodiment of the present invention includes a working cylinder 1 and a cylinder 100, the working cylinder 1 is connected to a piston rod assembly 101, the working cylinder 1 and the cylinder 100 are connected to each other by a lower support 102, the cylinder 100 is vertically divided into an air chamber 200 and an oil chamber 201 by a floating piston 2, the lower support 102 is provided with an oil passage 202 communicating with the working cylinder 1 and is provided with an assembly hole 203, the assembly hole 203 communicates with the oil passage 202 and the oil chamber 201 and is provided with an oil guide base 3, the center of the inner end of the oil guide base 3 is provided with an oil passing recess 300, the open end of the oil passing recess 300 is provided with a block cover 6, the two ends of the oil passing recess 300 are respectively provided with a first through hole 301 communicating with the oil passage 202 and a second through hole 302 communicating with the oil chamber 201, the bottom of the oil passing recess 300 is provided with an adjusting hole 303 extending to the outside of the oil guide base 3, the adjusting hole 303 is provided with an adjusting member 4, and the outer end of the adjusting knob 400 is connected to the adjusting member 4, the adjusting piece 4 is located at a position corresponding to the oil passing concave position 300 and is provided with an oil passing hole 401, and a blocking piece 5 is sleeved on the outer ring of the oil passing hole 401.

When the damping force of the shock absorber is in an initial state, the piston rod assembly 101 is pressed towards the bottom of the working cylinder 1 due to vibration, so that oil in the working cylinder 1 enters the oil passage 202, the oil flows into the oil passing concave position 300 through the oil passage 202 and the first through hole 301, a gap between the blocking piece 5 and the oil passing concave position 300 and the oil passing hole 401 in the adjusting piece 4 guide the oil to the second through hole 302 and flow into the oil cavity 201 of the gasoline cylinder 100, and damping is achieved; when the damping force of the shock absorber needs to be adjusted, the blocking piece 5 is enabled to block the oil passing hole 401 through the matching of the adjusting knob 400 and the adjusting piece 4, so that oil cannot flow through the oil passing hole 401, the flow speed of the oil entering the oil cavity 201 is reduced, and the damping force is adjusted.

The blocking piece 5 is sleeved on the outer ring of the adjusting piece 4, the inner end of the blocking piece 5 is provided with an oil passing groove 500, the inner diameter of the oil passing groove 500 is larger than the outer diameter of the adjusting piece 4 to form an oil passing interval communicated with the oil passing hole 401, a return spring 501 is sleeved on the outer ring of the adjusting piece 4 and positioned on the inner bottom surface of the oil passing concave position 300 and between the blocking cover 6, and an extension ring 402 is sleeved on the outer ring of the adjusting piece 4 positioned at one end, away from the blocking cover 6, of the blocking piece 5; the adjusting piece 4 comprises a column-shaped part 403 positioned at the inner end and a strip-shaped part 404 extending out of the adjusting hole 303, a strip-shaped groove 405 matched with the strip-shaped part 404 is concavely arranged at the inner end of the adjusting knob 400, an internal thread 304 is arranged on the side wall of the opening end in the adjusting hole 303, and an external thread 305 matched with the internal thread 304 is arranged on the outer wall of the extending ring 402.

When the oil-passing groove 500 is used, when the blocking piece 5 is in a non-blocking state, oil can flow to the second through hole 302 through an oil-passing interval formed between the oil-passing groove 500 and the adjusting piece 4 and the oil-passing hole 401; when the oil passing hole 401 needs to be blocked by the blocking piece 5, the adjusting knob 400 is rotated and the adjusting piece 4 is driven to rotate through the matching between the strip-shaped groove 405 and the strip-shaped part 404, the adjusting piece 4 is pressed towards the oil passing concave position 300 due to the thread matching between the external thread 305 of the outer ring of the extending ring 402 and the internal thread 304 of the side wall of the inner opening end of the adjusting hole 303 in the rotating process, the extending ring 402 of the outer ring is abutted against the blocking piece 5 and causes the blocking piece 5 to be pressed towards the blocking cover 6 when the adjusting piece 4 is pressed in, when the blocking piece 5 is tightly attached to the blocking cover 6, oil cannot flow into the oil passing groove 500 and further cannot flow through the oil passing hole 401, the blocking of the oil passing hole 401 is realized, the reset spring 501 is in an energy storage state, when the blocking of the oil passing hole 401 by the blocking piece 5 needs to be cancelled, the adjusting piece 4 is caused to exit from the oil passing concave position 300, and the blocking piece 5 is pressed towards the inner bottom surface of the oil passing concave position 300 due to the elastic reciprocating force of the reset spring 501, the state switching of the blocking piece 5 is completed, and the blocking piece 5 is prevented from being attached to the blocking cover 6 when being in a non-blocking state by arranging the reset spring 501, so that the damping effect of the shock absorber is influenced.

The equidistant ring in 6 outer lanes of blanking cover is equipped with a plurality of oil return holes 600, and every oil return hole 600 all switches on with oil pocket 201 and oily concave position 300, and blanking cover 6 is close to the one end of crossing oily concave position 300 and is provided with stifled ring 601, and stifled ring 601 slides and overlaps and locate adjusting part 4 outer and deviate from the one end butt of crossing the interior bottom surface of oily concave position 300 with reset spring 501.

When the shock absorber is used, the blocking ring 601 is pressed towards the oil return hole 600 all the time due to the elastic force of the return spring 501, when oil in the oil cavity 201 flows back to the oil passing concave position 300, part of the oil enters the oil return hole 600 and causes the blocking ring 601 to be pressed towards the return spring 501, at the moment, the oil can flow back to the oil passing concave position 300 through the oil return hole 600, after oil return is finished, the blocking ring 601 is pressed towards the blocking cover 6 again due to the elastic reciprocating force of the return spring 501, the oil return efficiency is effectively improved through the matching between the return spring 501 and the blocking ring 601, and the rebound of the shock absorber is more gentle.

A screw hole 406 is formed in the adjusting part 4, the screw hole 406 is communicated with the oil passing hole 401, a stud 407 is connected to the screw hole 406 through the inner thread, the outer end of the stud 407 penetrates and extends out of the adjusting knob 400, an adjusting nut 408 is connected to the outer end of the stud 407, a plug portion 409 extends from the inner end of the stud 407, a sealing groove 410 is concavely formed in the outer ring of the inner end of the stud 407, and a sealing ring 411 is arranged in the sealing groove 410.

When the shock absorber is used, the adjusting nut 408 is rotated to drive the stud 407 to rotate, the stud 407 is in threaded connection with the screw hole 406 and is matched with the screw hole 406 to drive the stud 407 to be pressed internally, the plug part 409 is driven to be pressed internally by the pressure in the stud 407, the plug part 409 is transversely arranged in the oil passing hole 401 when being in an internal pressure state to effectively reduce the oil flow of the oil passing hole 401, small-amplitude adjustment of damping force is achieved, when the damping force needs to be adjusted in a small amplitude, only the adjusting nut 408 needs to be rotated, when the damping force needs to be adjusted in a large amplitude, the adjusting knob 400 needs to be rotated, and a user can rotate the adjusting nut 408 or the adjusting knob 400 to effectively improve the use convenience and flexibility of the shock absorber.

An adjusting concave position 7 is annularly arranged at the opening end outside the adjusting hole 303, a plurality of spring holes 700 are annularly arranged on the bottom surface of the adjusting concave position 7 at equal intervals, a compression spring 701 is arranged in each spring hole 700, the outer end of the compression spring 701 is connected with a ball 702, the adjusting knob 400 is rotatably connected in the adjusting concave position 7, and an arc-shaped groove 703 matched with each ball 702 is annularly arranged at the inner end surface.

When the adjusting knob 400 is used, the friction coefficient of the adjusting knob 400 during rotation is effectively reduced through the matching between the ball 702 and the arc-shaped groove, so that the adjusting knob 400 can rotate more conveniently and more conveniently, labor is saved, the pressing spring 701 is arranged between the ball 702 and the bottom surface of the spring hole 700, the ball 702 can stretch out or retract in a self-adaptive mode when the pressing spring 701 enables the ball 702 and the arc-shaped groove 703 to be pressed tightly, and then the clamping stagnation between the ball 702 and the arc-shaped groove 703 is avoided.

One end of the floating piston 2 close to the oil chamber 201 is concavely provided with a containing groove 204 matched with the inner end head of the adjusting piece 4, a plurality of butterfly-shaped elastic pieces 205 are sleeved on the outer ring of the adjusting piece 4 and positioned between the floating piston 2 and the blocking cover 6, and the butterfly-shaped elastic pieces 205 are arranged in pairs in an opposite mode.

When the shock absorber is used, when the piston rod assembly 101 is pressed into the working cylinder 1, the oil cavity 201 of the oil cylinder 100 is filled with oil, the floating piston 2 is made to move away from one side of the adjusting piece 4, when the piston rod assembly 101 rebounds, the oil in the oil cavity 201 flows back into the working cylinder 1, the floating piston 2 is made to move towards one side of the adjusting piece 4, the inner end of the adjusting piece 4 is located in the accommodating groove 204, meanwhile, the butterfly-shaped elastic pieces 205 are arranged oppositely in pairs and further have buffering effect on the returning of the floating piston 2, the returning of the piston rod assembly 101 is made to be more gradual, and the shock absorption performance of the shock absorber is effectively improved.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The utility model provides an adjustable damping's bumper shock absorber, is including working cylinder (1) and hydro-cylinder (100), working cylinder (1) is connected with piston rod subassembly (101), working cylinder (1) and hydro-cylinder (100) are connected its characterized in that through undersetting (102): the pneumatic cylinder (100) is vertically divided into an air cavity (200) and an oil cavity (201) through a floating piston (2), the lower support (102) is provided with an oil duct (202) communicated with the working cylinder (1) and is provided with an assembly hole (203), the assembly hole (203) is communicated with the oil duct (202) and the oil cavity (201) and is internally provided with an oil guide seat (3), the center of the inner end of the oil guide seat (3) is provided with an oil passing concave position (300), the opening end of the oil passing concave position (300) is provided with a blocking cover (6), two ends of the oil passing concave position (300) are respectively provided with a first through hole (301) communicated with the oil duct (202) and a second through hole (302) communicated with the oil cavity (201), the bottom surface of the oil passing concave position (300) is provided with an adjusting hole (303) extending out of the oil guide seat (3), an adjusting piece (4) is arranged in the adjusting hole (303) and the adjusting piece (4) is connected with an adjusting knob (400), the adjusting piece (4) is located the position corresponding to the oil passing concave position (300) and is provided with an oil passing hole (401), and the outer ring of the oil passing hole (401) is sleeved with a blocking piece (5).

2. The adjustable damping shock absorber according to claim 1, wherein: oil recess (500) have been seted up to regulating part (4) outer lane and inner to stifled piece (5) cover, the internal diameter of crossing oil recess (500) is greater than the external diameter formation of regulating part (4) and crosses the oily interval of crossing that oilhole (401) switched on, regulating part (4) outer lane just is located and is equipped with reset spring (501) between oily concave site (300) bottom surface and blanking cover (6), the outer lane cover that regulating part (4) are located blanking part (5) and deviate from blanking cover (6) one end is equipped with extension ring (402).

3. The adjustable damping shock absorber according to claim 1, wherein: adjusting part (4) including be located inner column portion (403) and extend to regulation hole (303) outer strip portion (404), adjust knob (400) the concave strip groove (405) that are equipped with strip portion (404) adaptation in inner, the lateral wall of open end is provided with internal thread (304) in regulation hole (303), extend ring (402) outer wall be provided with external screw thread (305) of internal thread (304) adaptation.

4. The adjustable damping shock absorber according to claim 1, wherein: the equidistant ring in blanking cover (6) outer lane is equipped with a plurality of oil return holes (600), every oil return hole (600) all switch on with oil pocket (201) and oily concave site (300), the one end that blanking cover (6) were close to oily concave site (300) is provided with stifled ring (601), stifled ring (601) slide the cover and locate adjusting part (4) outer and deviate from the one end butt of crossing oily concave site (300) inner bottom surface with reset spring (501).

5. The adjustable damping shock absorber according to claim 1, wherein: screw hole (406) have been seted up in regulating part (4), screw hole (406) switch on and inside threaded connection has double-screw bolt (407) with oil passing hole (401), double-screw bolt (407) outer end is run through and is extended to outside adjust knob (400) and be connected with adjusting nut (408), double-screw bolt (407) inner extends has stifled head portion (409), the concave seal groove (410) that is equipped with in outer lane of double-screw bolt (407) the inner, seal groove (410) embeds there is sealing ring (411).

6. The adjustable damping shock absorber according to claim 1, wherein: the outer opening end of regulation hole (303) encircles and is equipped with regulation concave position (7), it encircles and is equipped with a plurality of spring holes (700) to adjust concave position (7) bottom surface equidistance, every spring hole (700) all embeds there is pressure spring (701), pressure spring (701) outer end is connected with ball (702), adjust knob (400) rotate connect in regulation concave position (7) and interior terminal surface ring be equipped with arc groove (703) of every ball (702) adaptation.

7. The adjustable damping shock absorber according to claim 1, wherein: one end of the floating piston (2) close to the oil cavity (201) is concavely provided with a containing groove (204) matched with the inner end of the adjusting piece (4), a plurality of butterfly-shaped elastic pieces (205) are sleeved on the outer ring of the adjusting piece (4) and between the floating piston (2) and the blocking cover (6), and the butterfly-shaped elastic pieces (205) are arranged in a pairwise opposite mode.