CN221033749U - Damper with built-in regulating valve - Google Patents

Abstract

The utility model discloses a damper with a built-in regulating valve, which comprises a damper main body, wherein the damper main body is provided with an outer cylinder, an inner cylinder and a piston assembly, the inner cylinder comprises a rod cavity and a rodless cavity, the bottom of the inner cylinder is provided with a bottom valve, the bottom of the damper main body is fixedly provided with a base, an oil storage cavity and an oil passing gap are formed between the bottom valve and the base, the oil storage cavity is communicated with the outer cylinder through the oil passing gap, the bottom valve is provided with an oil passing hole, and the oil storage cavity is communicated with the rodless cavity through the oil passing hole; the base is provided with a valve cavity, an oil return hole and an oil passing channel, one end of the oil passing channel is communicated with the oil return hole through the valve cavity, the other end of the oil passing channel is communicated with the inner cylinder through a hollow pipe, and the oil storage cavity is communicated with the valve cavity through the oil return hole; the valve cavity is internally provided with a valve core for adjusting the flow in the valve cavity, one end of the valve core is fixedly provided with a spiral cover, the side wall of the base is provided with an avoidance groove corresponding to the spiral cover, and the spiral cover is in avoidance fit with the avoidance groove. The radial space occupation is small, and the structural strength of the main body of the shock absorber is high.

Description

Damper with built-in regulating valve

Technical Field

The utility model relates to the technical field of shock absorbers, in particular to a shock absorber with a built-in regulating valve.

Background

The present chinese patent with publication number CN215831025U discloses a damper with side-adjusting damping structure, comprising: an outer cylinder, an inner cylinder, a piston, a regulating valve and a regulating pipe; the inner cylinder is nested in the outer cylinder, and the inner cylinder is filled with damping oil; the piston is slidably arranged in the inner cylinder, and a damping through hole is formed in the piston; the regulating valve comprises a spiral cover, and a plurality of regulating holes with unequal diameters are formed in the spiral cover; the adjusting pipe is arranged between the outer cylinder and the inner cylinder, and one end of the adjusting pipe is communicated with the inner cylinder; the other end of the adjusting pipe is communicated with the inner cylinder through one of the adjusting holes; when the screw cap is rotated, the adjusting holes pass through the end portions of the adjusting tube one by one.

However, the shock absorber described above has the following disadvantages: the governing valve of this bumper shock absorber is connected in the side of outer jar, and this kind of external governing valve can lead to the radial occupation space increase of bumper shock absorber, sets up the governing valve in the bumper shock absorber lateral wall simultaneously and can influence the structural strength of shell, need to improve urgently.

Disclosure of utility model

The utility model aims to provide a damper with a built-in regulating valve, which has the effects of small radial occupied space and higher structural strength of a damper main body.

The technical aim of the utility model is realized by the following technical scheme: the shock absorber with the built-in regulating valve comprises a shock absorber main body, wherein the shock absorber main body is provided with an outer cylinder and an inner cylinder, a piston assembly is arranged in the inner cylinder, the inner cylinder comprises rod cavities and rodless cavities which are arranged on two sides of the piston assembly, a bottom valve is arranged at the bottom of the inner cylinder, a base is fixedly arranged at the bottom of the shock absorber main body, an oil storage cavity and an oil passing gap are formed between the bottom valve and the base, the oil storage cavity is communicated with the outer cylinder through the oil passing gap, an oil passing hole is formed in the bottom valve, and the oil storage cavity is communicated with the rodless cavity through the oil passing hole; the base is provided with a valve cavity, an oil return hole and an oil passing channel, one end of the oil passing channel is communicated with the oil return hole through the valve cavity, the other end of the oil passing channel is communicated with the inner cylinder through a hollow pipe, and the oil storage cavity is communicated with the valve cavity through the oil return hole; the valve cavity is internally provided with a valve core for adjusting the flow in the valve cavity, one end of the valve core is fixedly provided with a rotary cover, the side wall of the base is provided with an avoidance groove corresponding to the rotary cover, and the rotary cover is in avoidance fit with the avoidance groove.

By adopting the technical scheme, when the piston assembly moves downwards in the inner cylinder relatively, the buffer oil in the rodless cavity is extruded to the oil storage chamber through the oil passing hole of the bottom valve and is extruded to the outer cylinder after passing through the oil gap to realize buffering; when the piston assembly moves upwards relatively in the inner cylinder, buffer oil in the rod cavity is extruded into the oil passing channel through the hollow rod, then the buffer oil is pressed into the oil storage chamber from the oil return hole after sequentially passing through the valve cavity and the oil guide hole, and the buffer oil in the oil storage chamber is extruded into the rodless cavity through the oil passing hole of the bottom valve to realize buffering; the damping force of the damper is adjusted by screwing the screw cap and controlling the flow of buffer oil in the valve cavity through the valve core, and the damping force adjusting device is different from the traditional adjusting valve setting mode with an external side face of the damper main body.

The utility model is further provided with: the side wall of the valve core is provided with a gradually-deep spiral groove along the circumferential direction, the spiral groove is communicated with the oil return hole, the valve core is provided with an oil guide hole and a through hole, one end of the oil guide hole is communicated with the valve cavity, and the other end of the oil guide hole is communicated with the spiral groove through the through hole.

Through adopting above-mentioned technical scheme, utilize spiral cover to revolve the screwing valve core, make on the spiral groove correspond darker or shallower oily site and the oil return hole alignment, can change the effective throughput of the buffering oil of passing through the spiral groove in the unit time to realize the electrodeless regulation to the bumper shock absorber damping force.

The utility model is further provided with: the outer wall of the valve core is provided with an annular groove along the circumferential direction, a first sealing ring is arranged in the annular groove, and the valve core is in sealing fit with the inner wall of the valve cavity through the first sealing ring.

By adopting the technical scheme, the first sealing ring can effectively prevent the oil seepage between the outer wall of the valve core and the inner wall of the valve cavity.

The utility model is further provided with: the side wall of the valve core is provided with gradually-deep spiral grooves along the circumferential direction, two annular grooves are formed, the valve core radially extends to form a convex ring part, and the two annular grooves are formed between the spiral grooves and the convex ring part.

By adopting the technical scheme, the plurality of first sealing rings are mutually matched, so that the oil sealing property of the utility model can be improved.

The utility model is further provided with: the base fixedly connected with clamp plate, the intercommunication the mounting groove of valve pocket is seted up to the base, be equipped with the elastic component in the mounting groove, the case radial extension has bulge loop portion, bulge loop portion is equipped with a plurality of rotatory holes along circumference interval, rotatory hole rotation is equipped with the ball, the base is in a plurality of constant head tanks have been seted up to the bottom of mounting groove, elastic component one end support in the clamp plate, the elastic component other end promotes the ball support tightly in the constant head tank.

Through adopting above-mentioned technical scheme, when screwing up the spiral cover, spiral cover drives the case and rotates, and the ball on the bulge loop portion of case beats from top to bottom in adjacent constant head tank to send alarm sound, with the angle that the suggestion operator spiral cover was screwed up, simultaneously when the spiral cover rotated to predetermined site after, the elastic component can promote the ball and support in the constant head tank of corresponding site, improves the positioning stability of case and disk seat.

The utility model is further provided with: a gasket is arranged between the elastic piece and the ball, and the elastic piece pushes the gasket to be in press fit with the ball.

Through adopting above-mentioned technical scheme, the elastic force of elastic component acts on the gasket, then the gasket can give the ball a tight power of supporting towards the constant head tank direction, and the thrust of elastic component effect on the ball is more even unanimous, prevents to set up the elastic component alone and makes elastic component and ball break away from each other easily, leads to the condition that elastic component's elastic action became invalid.

The utility model is further provided with: the elastic piece is arranged as a belleville spring.

By adopting the technical scheme, the belleville spring has high fatigue life, and the replacement period of the second elastic piece can be prolonged, so that the service life of the utility model is prolonged.

The utility model is further provided with: the valve cavity is formed in parallel along the radial direction of the shock absorber main body.

The utility model is further provided with: the upper end of the shock absorber main body is provided with a guide, the upper end of the hollow tube is communicated with the inner cylinder through the guide, and the hollow tube is in sealing fit with the guide and the inner wall of the oil passage of the base through a second sealing ring.

By adopting the technical scheme, the positioning sealing ring can increase the oil sealing performance at the two ends of the hollow pipe, so that the buffering and damping capacity of the utility model is improved.

In summary, the utility model has the following beneficial effects:

1. The utility model sets the flow regulating structure on the base, which can avoid the structure of the shock absorber main body, and has better supporting force, small radial occupation space and higher structural strength of the shock absorber main body.

2. The ball is rotationally arranged in the rotary hole of the valve core convex ring part, the positioning groove is correspondingly formed in the circumferential direction of the bottom of the mounting groove of the base, meanwhile, the pressing plate is fixedly arranged on the base, the elastic piece is compressed by the pressing plate, and when the elastic piece generates elastic force, the ball is abutted against the corresponding positioning groove through the gasket, so that the flow regulating hand feeling of the valve is improved, and the locking stability between the valve core and the base is improved.

Drawings

Fig. 1 is an overall construction diagram of the present utility model.

Fig. 2 is an enlarged view of a portion of the area a of fig. 1 in accordance with the present utility model.

Fig. 3 is a longitudinal cross-sectional view of the base of the present utility model.

Fig. 4 is a structural view of the valve cartridge of the present utility model.

FIG. 5 is a cross-sectional view of the valve cartridge of the present utility model in a spiral groove position.

In the figure: 1. a damper main body; 1a, an outer cylinder; 1b, an inner cylinder; 1b1, having a rod cavity; 1b2, rodless cavity; 1c, an oil storage cavity; 1d, oil passing gap; 11. a piston assembly; 12. a hollow tube; 13. a guide; 14. a bottom valve; 14a, oil passing holes; 2. a base; 2a, valve cavity; 2b, an oil passing channel; 2c, oil return holes; 2d, avoiding the groove; 2e, a mounting groove; 2f, positioning grooves; 3. a valve core; 3a, a spiral wire slot; 3b, an oil guide hole; 3c, penetrating holes; 3d, an annular groove; 30. a convex ring portion; 30a, a rotation hole; 31. screwing the cover; 32. a first seal ring; 41. a pressing plate; 42. an elastic member; 43. a ball; 44. a gasket; 5. and a second sealing ring.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

1-3, The shock absorber with the built-in regulating valve comprises a shock absorber main body 1, wherein the shock absorber main body 1 is provided with an outer cylinder 1a and an inner cylinder 1b, a piston assembly 11 is arranged in the inner cylinder 1b, the inner cylinder 1b comprises a rod cavity 1b1 and a rodless cavity 1b2 which are positioned at two sides of the piston assembly 11, a bottom valve 14 is arranged at the bottom of the inner cylinder 1b, a base 2 is fixedly arranged at the bottom of the shock absorber main body 1, an oil storage cavity 1c and an oil passing gap 1d are formed between the bottom valve 14 and the base 2, the oil storage cavity 1c is communicated with the outer cylinder 1a through the oil passing gap 1d, an oil passing hole 14a is formed in the bottom valve 14, and the oil storage cavity 1c is communicated with the rodless cavity 1b2 through the oil passing hole 14 a; the base 2 is provided with a valve cavity 2a, an oil return hole 2c and an oil passing channel 2b, the valve cavity 2a is arranged in parallel along the radial direction of the shock absorber main body 1, one end of the oil passing channel 2b is communicated with the oil return hole 2c through the valve cavity 2a, the other end of the oil passing channel 2b is communicated with the inner cylinder 1b through a hollow pipe 12, and the oil storage cavity 1c is communicated with the valve cavity 2a through the oil return hole 2 c; a valve core 3 for adjusting the flow of the valve cavity 2a is arranged in the valve cavity 2a, a rotary cover 31 is fixedly arranged at one end of the valve core 3, an avoidance groove 2d is formed in the side wall of the base 2 corresponding to the rotary cover 31, and the rotary cover 31 is in avoidance fit with the avoidance groove 2 d; the upper end of the shock absorber main body 1 is provided with a guide 13, the upper end of a hollow pipe 12 is communicated with an inner cylinder 1b through the guide 13, the hollow pipe 12 is in sealing fit with the guide 13, and the hollow pipe 12 is in sealing fit with the inner wall of an oil passing channel 2b of the base 2 through a second sealing ring 5, so that the oil sealing performance of the two ends of the hollow pipe 12 can be improved by positioning the sealing ring, and the buffering and shock absorbing capacity of the shock absorber is improved.

As shown in fig. 2 and fig. 4-5, the side wall of the valve core 3 is provided with a gradually-deep spiral groove 3a along the circumferential direction, the spiral groove 3a is communicated with an oil return hole 2c, the valve core 3 is provided with an oil guide hole 3b and a through hole 3c, one end of the oil guide hole 3b is communicated with the valve cavity 2a, the other end of the oil guide hole 3b is communicated with the spiral groove 3a through the through hole 3c, the valve core 3 is screwed by using a screw cap 31, so that corresponding deeper or shallower oil passing points on the spiral groove 3a are aligned with the oil passing channel 2b, the effective throughput of buffer oil passing through the spiral groove 3a in unit time can be changed, and the stepless adjustment of the damping force of the shock absorber is realized; the outer wall of the valve core 3 is provided with an annular groove 3d along the circumferential direction, a first sealing ring 32 is arranged in the annular groove 3d, the valve core 3 is in sealing fit with the inner wall of the valve cavity 2a through the first sealing ring 32, and the first sealing ring 32 can effectively prevent the oil seepage between the outer wall of the valve core 3 and the inner wall of the valve cavity 2 a; two annular grooves 3d are formed, the valve core 3 radially extends to form a convex ring part 30, the two annular grooves 3d are arranged between the spiral groove 3a and the convex ring part 30, and a plurality of first sealing rings 32 are matched with each other, so that the oil sealing performance of the valve can be improved.

As shown in fig. 2-4, the base 2 is fixedly connected with a pressing plate 41, the base 2 is provided with a mounting groove 2e communicated with the valve cavity 2a, an elastic piece 42 is arranged in the mounting groove 2e, the valve core 3 radially extends to form a convex ring part 30, a plurality of rotating holes 30a are circumferentially arranged at intervals on the convex ring part 30, balls 43 are rotationally arranged in the rotating holes 30a, the base 2 is provided with a plurality of positioning grooves 2f at the bottom of the mounting groove 2e, one end of the elastic piece 42 is abutted against the pressing plate 41, the other end of the elastic piece 42 pushes the balls 43 to be abutted against the positioning grooves 2f, when the rotary cover 31 is screwed, the rotary cover 31 drives the valve core 3 to rotate, the balls 43 on the convex ring part 30 of the valve core 3 jump up and down in the adjacent positioning grooves 2f, and give out alarm sounds to prompt an operator to screw the screwing angle of the rotary cover 31, and meanwhile, after the rotary cover 31 rotates to a preset site, the elastic piece 42 pushes the balls 43 to be abutted against the positioning grooves 2f of the corresponding sites, and the positioning stability of the valve core 3 is improved; a gasket 44 is arranged between the elastic piece 42 and the ball 43, the gasket 44 is pushed by the elastic piece 42 to be in press fit with the ball 43, the elastic force of the elastic piece 42 acts on the gasket 44, then the gasket 44 can provide a pressing force for the ball 43 towards the direction of the positioning groove 2f, the gasket 44 is additionally arranged, so that the thrust of the elastic piece 42 acting on the ball 43 is more uniform, and the situation that the elastic piece 42 and the ball 43 are easily separated from each other due to the independent arrangement of the elastic piece 42, and the elastic action of the elastic piece 42 is invalid is prevented; the elastic member 42 is configured as a belleville spring having a high fatigue life, and the replacement cycle of the second elastic member 42 can be increased, thereby extending the service life of the present utility model.

The basic working principle of the utility model is as follows: when the piston assembly 11 moves downwards relatively in the inner cylinder 1b, the buffer oil in the rodless cavity 1b2 is extruded to the oil storage chamber through the oil passing hole 14a of the bottom valve 14 and is extruded to the outer cylinder 1a after passing through the oil clearance 1d to realize buffer; when the piston assembly 11 moves upwards relatively in the inner cylinder 1b, buffer oil in the rod cavity 1b1 is extruded into the oil passing channel 2b through the hollow rod, then the buffer oil is pressed into the oil storage chamber from the oil return hole 2c after sequentially passing through the valve cavity 2a and the oil guide hole 3b, and the buffer oil in the oil storage chamber is extruded into the rodless cavity 1b2 through the oil passing hole 14a of the bottom valve 14 to realize buffering; the operator can control the flow of buffer oil in the valve cavity 2a through screwing the spiral cover 31 and then adjust the damping force of the utility model by the valve core 3, and the utility model is different from the traditional adjusting valve setting mode with an external side surface of the shock absorber main body 1, the utility model sets the flow adjusting structure on the base 2, and the structure of the shock absorber main body 1 is not destroyed, so that the utility model has better supporting force, in addition, the side wall of the base 2 is provided with the avoidance groove 2d, the spiral cover 31 can be partially hidden, the radial occupation space of the flow adjusting part is reduced, and the utility model has the effects of small radial occupation space and higher structural strength of the shock absorber main body 1.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims (9)

1. The utility model provides a damper with a built-in regulating valve, includes bumper shock absorber main part (1), bumper shock absorber main part (1) are equipped with outer jar (1 a), interior jar (1 b), be equipped with piston assembly (11) in interior jar (1 b), interior jar (1 b) are including being located there are pole chamber (1 b 1) and rodless chamber (1 b 2) of piston assembly (11) both sides, interior jar (1 b) bottom is equipped with bottom valve (14), its characterized in that:

The bottom of the shock absorber main body (1) is fixedly provided with a base (2), an oil storage cavity (1 c) and an oil passing gap (1 d) are formed between the bottom valve (14) and the base (2), the oil storage cavity (1 c) is communicated with the outer cylinder (1 a) through the oil passing gap (1 d), the bottom valve (14) is provided with an oil passing hole (14 a), and the oil storage cavity (1 c) is communicated with the rodless cavity (1 b 2) through the oil passing hole (14 a); the base (2) is provided with a valve cavity (2 a), an oil return hole (2 c) and an oil passing channel (2 b), one end of the oil passing channel (2 b) is communicated with the oil return hole (2 c) through the valve cavity (2 a), the other end of the oil passing channel (2 b) is communicated with the inner cylinder (1 b) through a hollow pipe (12), and the oil storage cavity (1 c) is communicated with the valve cavity (2 a) through the oil return hole (2 c); valve core (3) of adjusting the internal flow size in valve cavity (2 a) are arranged in valve cavity (2 a), spiral cover (31) has been set firmly to case (3) one end, base (2) lateral wall corresponds spiral cover (31) has been seted up and has been dodged groove (2 d), spiral cover (31) with dodge groove (2 d) dodges the cooperation.

2. The damper with built-in regulator valve according to claim 1, wherein: the side wall of the valve core (3) is provided with a gradually-deep spiral groove (3 a) along the circumferential direction, the spiral groove (3 a) is communicated with the oil return hole (2 c), the valve core (3) is provided with an oil guide hole (3 b) and a penetrating hole (3 c), one end of the oil guide hole (3 b) is communicated with the valve cavity (2 a), and the other end of the oil guide hole (3 b) is communicated with the spiral groove (3 a) through the penetrating hole (3 c).

3. The damper with built-in regulator valve according to claim 1, wherein: an annular groove (3 d) is formed in the outer wall of the valve core (3) along the circumferential direction, a first sealing ring (32) is arranged in the annular groove (3 d), and the valve core (3) is in sealing fit with the inner wall of the valve cavity (2 a) through the first sealing ring (32).

4. A damper with a built-in regulator valve according to claim 3, wherein: the side wall of the valve core (3) is provided with gradually-deep spiral grooves (3 a) along the circumferential direction, the annular grooves (3 d) are provided with two, the valve core (3) radially extends to form a convex ring part (30), and the two annular grooves (3 d) are respectively arranged between the spiral grooves (3 a) and the convex ring part (30).

5. The damper with built-in regulator valve according to claim 1, wherein: the utility model discloses a valve seat, including base (2) and valve pocket (2 a), base (2) fixedly connected with clamp plate (41), the intercommunication mounting groove (2 e) has been seted up in valve pocket (2 a), be equipped with elastic component (42) in mounting groove (2 e), case (3) radial extension has bulge loop portion (30), bulge loop portion (30) are equipped with a plurality of rotatory holes (30 a) along circumference interval, rotatory hole (30 a) rotation is equipped with ball (43), base (2) are in a plurality of constant head tanks (2 f) have been seted up to the bottom of mounting groove (2 e), elastic component (42) one end support in clamp plate (41), elastic component (42) other end promotion ball (43) support tightly in constant head tank (2 f).

6. The damper with built-in regulator valve according to claim 5, wherein: a gasket (44) is arranged between the elastic piece (42) and the ball (43), and the elastic piece (42) pushes the gasket (44) to be in press fit with the ball (43).

7. The damper with built-in regulator valve according to claim 5, wherein: the elastic member (42) is provided as a belleville spring.

8. The damper with built-in regulator valve according to claim 1, wherein: the valve cavity (2 a) is arranged in parallel along the radial direction of the shock absorber main body (1).

9. The damper with built-in regulator valve according to claim 1, wherein: the shock absorber is characterized in that a guide (13) is arranged at the upper end of the shock absorber body (1), the upper end of the hollow tube (12) is communicated with the inner cylinder (1 b) through the guide (13), and the hollow tube (12) is in sealing fit with the guide (13) and the hollow tube (12) is in sealing fit with the inner wall of the oil passing channel (2 b) of the base (2) through a second sealing ring (5).