CN217348094U

CN217348094U - Resilience damping force adjustable oil rod for front fork

Info

Publication number: CN217348094U
Application number: CN202220106888.7U
Authority: CN
Inventors: 李莉华; 毛祖顺; 徐威廉
Original assignee: Guangzhou Kemei Sports Technology Co ltd
Current assignee: Guangzhou Kemei Sports Technology Co ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-09-02
Anticipated expiration: 2032-01-14

Abstract

The utility model discloses a front fork oil stick with adjustable rebound damping force, which comprises a cylinder body, a piston rod, a driving rod and a control assembly, wherein one end of the cylinder body is provided with a top end sealing seat, the other end is provided with a bottom end sealing seat, a sliding valve core is arranged in the cylinder body, at least part of the piston rod is positioned in the cylinder body and fixedly connected with the sliding valve core, the inside of the cylinder body is divided into a first oil chamber and a second oil chamber by the sliding valve core, the piston rod is provided with a damping hole for communicating the second oil chamber and a third oil chamber, an adjusting piece is arranged in the piston rod, an adjusting hole is arranged on the adjusting piece, the upper end of the driving rod is sealed and penetrates out of the top end sealing seat to be connected with the control assembly at the top of the cylinder body, the lower end of the driving rod extends into the piston rod and is connected with the adjusting piece, and the control assembly is used for controlling the adjusting piece to rotate, so that the damping hole is shielded or at least partially exposed. The resilience speed of the front fork can be adjusted adaptively, and the adaptability of the front fork to complex road conditions in the riding process can be effectively improved.

Description

Oil rod for front fork with adjustable rebound damping force

Technical Field

The utility model relates to a bicycle technical field especially relates to a resilience damping force adjustable front fork is with oil stick.

Background

Along with the promotion of people's life theory, ride and be accepted by more and more people, people realize green trip or the purpose of body building through riding. The bicycle front fork is an important part in a bicycle structure, the upper end of the bicycle front fork is connected with a handlebar, the lower end of the bicycle front fork is matched with a front wheel to form a front wheel structure with a guiding function, and the existing middle-high end bicycle front fork generally has a shock absorbing function and is used for improving the comfort level of a rider riding on a bumpy road surface. However, the front fork has many problems in the application process, the front fork can meet various road surfaces in the riding process, the bumping degrees are different, so that the impact on the front fork is different, and in order to cope with various impacts, the hardness of the front fork for shock absorption is often adjusted according to the actual situation so as to prevent the bottom hitting phenomenon of the front fork; when the bicycle suddenly jolts to a large extent, the phenomenon that the bicycle head is jumped or bounced due to too fast rebound of the front fork often occurs, and danger is brought to a rider.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a resilience damping force adjustable front fork is with oil stick, the resilience speed of front fork is adjusted to adaptability, effectively improves the adaptability of the in-process front fork of riding to complicated road conditions, ensures the personal safety of the personnel of riding when traveling fast and meet multiple complicated road conditions.

The purpose of the utility model is realized by adopting the following technical scheme:

an oil rod for a front fork with adjustable rebound damping force comprises a cylinder body, a piston rod, a driving rod and a control assembly, one end of the cylinder body is provided with a top end sealing seat, the other end of the cylinder body is provided with a bottom end sealing seat, a sliding valve core is arranged in the cylinder body, the piston rod is at least partially positioned in the cylinder body and fixedly connected with the sliding valve core, the sliding valve core divides the interior of the cylinder body into a first oil chamber and a second oil chamber, the piston rod is provided with a damping hole for communicating the second oil chamber and the third oil chamber, an adjusting piece is arranged in the piston rod, the adjusting piece is provided with an adjusting hole, the upper end of the driving rod penetrates through the top end sealing seat in a sealing way and is connected with a control component at the top of the cylinder body, the lower end of the driving rod extends into the piston rod and is connected with the adjusting piece, and the control assembly is used for controlling the adjusting piece to rotate, so that the damping hole is shielded or at least partially exposed.

Furthermore, the adjusting piece is provided with a limiting part, the damping hole is provided with a first limiting end part and a second limiting end part, and when the limiting part abuts against the first limiting end part or the second limiting end part, the adjusting piece can be limited to rotate relative to the piston rod.

Furthermore, the limiting part is a limiting pin.

Furthermore, the regulation hole sets up the lateral wall of regulating part, the regulation hole is followed regulating part circumference sets up and is the annular, the damping hole is followed piston rod circumference sets up and is the annular.

Furthermore, the regulating part is of a cylindrical structure, the regulating part is provided with an insertion through hole, a strip-shaped opening is formed in the bottom of the regulating part, and a flat structure in sealing fit with the strip-shaped opening is arranged at the lower end of the driving rod.

Further, the control assembly includes a rebound adjusting knob including a screw part inserted into the top end sealing seat to be connected with the upper end of the driving rod and a screw cap part connected with the screw part and protruding from the top end sealing seat.

Further, the upper end of the driving rod is in threaded connection with the lower end of the rotating rod part.

Further, the upper end of the driving rod is provided with a connecting hole, the connecting hole does not penetrate through the driving rod, an internal thread is arranged in the connecting hole, and the rotating rod part is provided with an external thread matched with the internal thread.

Further, still include sliding sleeve, rebound spring and resilience retaining ring, the sliding sleeve movable sleeve is located the piston rod is outside, rebound retaining ring and rebound spring all overlap and locate the piston rod is outside, just rebound spring is located the sliding sleeve with between the resilience retaining ring, the sliding spool axial is run through and is equipped with a plurality of resilience fluid passageways, resilience fluid passageway intercommunication first grease chamber with the second grease chamber, rebound spring's one end elasticity support in the rebound retaining ring, rebound spring's the other end support in the sliding sleeve, so that the sliding sleeve normality is close a plurality of resilience fluid passageways and forms the hindrance.

Furthermore, an annular groove is formed in the outer portion of the sliding valve core, an annular clamping ring is embedded in the annular groove, the outer peripheral surface of the annular clamping ring is in sliding contact with the inner peripheral surface of the cylinder body, a gap is formed in the annular clamping ring, and the oil body reciprocates in the first oil chamber and the second oil chamber from the gap to form an oil path along the edge.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses in, when the user need adjust its resilience damping effect because of road or self custom, through the rotation of control assembly control actuating lever, the regulating part rotates along with the actuating lever, make it shelter from or at least part shows the damping hole, the flow area size of realization damping hole is adjustable, with this controlled flow size, realize the rebound speed of self-adaptation ground adjustment oil gas front fork, thereby reach arbitrary adjustment resilience damping effect, flexibility and high efficiency have, effectively improve the adaptability of the in-process front fork of riding to complicated road conditions, ensure the personal safety of the personnel of riding when running fast and meet multiple complicated road conditions. In addition, control assembly is located the top of cylinder body, need not squat like this alright to the regulation of carrying out resilience damping, can not cause irreversible damage because of in the transportation to resilience function in addition, has effectively protected the resilience function of front fork.

Drawings

Fig. 1 is a schematic view of an oil stick for a front fork, which is provided by the present invention and has adjustable rebound damping force;

FIG. 2 is a cross-sectional view of the oil stick for the front fork with adjustable rebound damping force provided by the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at B;

FIG. 4 is an assembly view of a piston rod and a sliding valve core of the oil rod for a front fork with adjustable rebound damping force provided by the present invention;

fig. 5 is a schematic view of a sliding valve core of an oil rod for a front fork with adjustable rebound damping force provided by the present invention;

in the figure: 10. a cylinder body; 101. a top end sealing seat; 102. a bottom end sealing seat; 103. a sliding valve core; 1030. A rebound fluid passage; 104. a first oil chamber; 105. a second oil chamber; 106. an annular snap ring; 107. a gap is formed; 20. a piston rod; 201. a damping hole; 30. a drive rod; 40. an adjustment member; 401. an adjustment hole; 402. a limiting part; 50. a rebound adjusting knob; 501. a rotating rod part; 502. a cap screwing part; 60. a sliding sleeve; 70. a rebound spring; 80. a rebound retainer ring.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "one," "another," and the like are used to distinguish similar elements, and these terms and other similar terms are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through both elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. Corresponding reference numerals are used throughout the figures to indicate corresponding or corresponding elements (e.g., elements identified as "1 XX" and "2 XX" are structurally identical and functionally similar).

As shown in fig. 1-5, for the front fork oil stick with adjustable rebound damping force provided by the present invention, the front fork oil stick includes a cylinder body 10, a piston rod 20, a driving rod 30 and a control assembly, one end of the cylinder body 10 is provided with a top end sealing seat 101, the other end is provided with a bottom end sealing seat 102, a sliding valve spool 103 is arranged in the cylinder body 10, at least a part of the piston rod 20 is located in the cylinder body 10 and is fixedly connected with the sliding valve spool 103, the sliding valve spool 103 divides the interior of the cylinder body 10 into a first oil chamber 104 and a second oil chamber 105, the piston rod 20 is provided with a damping hole 201 communicating the second oil chamber 105 and a third oil chamber, an adjusting member 40 is arranged in the piston rod 20, the adjusting member 40 is provided with an adjusting hole 401, the top end of the driving rod 30 is hermetically penetrated through the top end sealing seat 101 and is connected with the control assembly at the top of the cylinder body 10, the lower end of the driving rod 30 extends into the interior of the piston rod 20 and is connected with the adjusting member 40, the control component is used for controlling the rotation of the adjusting member 40, so that the damping hole 201 is shielded or at least partially exposed.

The utility model discloses in, when the user need adjust its resilience damping effect because of road or self custom, through the rotation of control assembly control actuating lever 30, regulating part 40 rotates along with actuating lever 30, make it shelter from or at least part show damping hole 201, the flow area size of realizing damping hole 201 is adjustable, with this control flow size, realize the rebound speed of self-adaptation ground adjustment oil gas front fork, thereby reach arbitrary adjustment resilience damping effect, flexibility and high efficiency have, effectively improve the adaptability of the in-process front fork of riding to complicated road conditions, ensure the personal safety of the personnel of riding when running fast and meet multiple complicated road conditions. In addition, the control assembly is located the top of cylinder body 10, need not squat like this just to the regulation of carrying out the rebound damping, can not cause irreversible damage because of in the transportation to the rebound function in addition, effectively protected the rebound function of front fork.

In a preferred embodiment, the adjusting member 40 is provided with a limiting portion 402, the damping hole 201 has a first limiting end and a second limiting end, and the adjusting member 40 can be limited from rotating relative to the piston rod 20 when the limiting portion 402 abuts against the first limiting end or the second limiting end. In this embodiment, when the limiting portion 402 abuts against the first limiting end, the adjusting member 40 completely covers the damping hole 201, the oil pressure rebound speed reaches the minimum, and when the limiting portion 402 abuts against the second limiting end, the adjusting hole 401 completely abuts against the damping hole 201, and the oil pressure rebound speed reaches the maximum. Of course, when the stopper 402 abuts against the first stopper end, the adjustment hole 401 completely abuts against the damping hole 201, and the oil pressure rebound speed is maximized, and when the stopper 402 abuts against the second stopper end, the adjustment member 40 completely covers the damping hole 201, and the oil pressure rebound speed is minimized. The circulation space between the damping hole 201 and the adjusting hole 401 is changed by controlling the adjusting piece 40 to rotate, so that the effect of randomly adjusting the rebound damping is achieved.

In a preferred embodiment, the stopper 402 is a stopper pin.

In a preferred embodiment, the adjusting hole 401 is disposed on a side wall of the adjusting member 40, the adjusting hole 401 is disposed along a circumferential direction of the adjusting member 40 and has an annular shape, and the damping hole 201 is disposed along a circumferential direction of the piston rod 20 and has an annular shape.

In a preferred embodiment, the adjusting member 40 is a cylindrical structure, the adjusting member 40 is provided with an insertion through hole, the bottom of the adjusting member 40 is provided with a strip-shaped opening, and the lower end of the driving rod 30 is provided with a flat structure which is in sealing fit with the strip-shaped opening. This facilitates the removable connection of drive rod 30 to adjustment member 40.

In a preferred embodiment, the control assembly includes a rebound adjusting knob 50, the rebound adjusting knob 50 includes a rod portion 501 and a cap portion 502, the rod portion 501 is inserted into the top seal seat 101 to be connected to the upper end of the driving rod 30, and the cap portion 502 is connected to the rod portion 501 and protrudes from the top seal seat 101. The driving rod 30 can be driven to rotate by rotating the cap screwing part 502, so that the adjusting part 40 can rotate, and the operation is simple and convenient.

In a preferred embodiment, the upper end of the driving rod 30 is screwed with the lower end of the rotating rod 501.

In a preferred embodiment, a connection hole is formed in the upper end of the driving rod 30, the connection hole is not formed through the driving rod 30, an internal thread is formed in the connection hole, and an external thread matched with the internal thread is formed on the rotating rod portion 501.

As a preferred embodiment, the piston assembly further comprises a sliding sleeve 60, a rebound spring 70 and a retainer ring, the sliding sleeve 60 is movably sleeved outside the piston rod 20, the retainer ring and the rebound spring 70 are both sleeved outside the piston rod 20, the rebound spring 70 is located between the sliding sleeve 60 and the rebound retainer ring 80, the sliding valve core 103 is axially provided with a plurality of rebound fluid passages 1030 in a penetrating manner, the rebound fluid passages 1030 communicate the first oil chamber 104 and the second oil chamber 105, one end of the rebound spring 70 elastically abuts against the rebound retainer ring 80, and the other end of the rebound spring 70 abuts against the sliding sleeve 60, so that the sliding sleeve 60 normally approaches the plurality of rebound fluid passages 1030 to form an obstruction.

When the pressure value of the first oil chamber 104 exceeds the preset value, the oil body of the first oil chamber 104 enters from the rebound fluid passage 1030 and pushes the sliding sleeve 60 to displace downward (while the sliding sleeve 60 compresses the rebound spring 70), so that the sliding sleeve 60 no longer obstructs the rebound fluid passage 1030 to form an open state, and the oil body flowing into the rebound fluid passage 1030 flows toward the second oil chamber 105 from the gap between the lower end position of the through-hole flow passage and the sliding sleeve 60. When the pressure value of the first oil chamber 104 drops below the predetermined value, the rebound spring 70 is pushed by the elastic force to reset the sliding sleeve 60 and approaches the outer edge position below the rebound fluid channel 1030 again to form an obstruction.

In a preferred embodiment, an annular groove is formed on the outside of the spool 103, an annular snap ring 106 is fitted into the annular groove, the outer circumferential surface of the annular snap ring 106 is in sliding contact with the inner circumferential surface of the cylinder 10, the annular snap ring 106 is provided with a notch gap 107, and an oil body reciprocates from the notch gap 107 into the first oil chamber 104 and the second oil chamber 105 to form a rim oil path. In this embodiment, the oil bodies of the first oil chamber 104 and the second oil chamber 105 can pass through each other from the rim oil passage in a normal state, and thus have a rebound function even if the orifice 201 is completely closed.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a resilience damping force adjustable oil stick for front fork, a serial communication port, including cylinder body (10), piston rod (20), actuating lever (30) and control assembly, the one end of cylinder body (10) is provided with top seal receptacle (101), and the other end is provided with bottom seal receptacle (102), be provided with slide valve core (103) in cylinder body (10), piston rod (20) at least part is located in cylinder body (10) and with slide valve core (103) link firmly, slide valve core (103) will cylinder body (10) is inside to be divided into first grease chamber (104) and second grease chamber (105), piston rod (20) are equipped with the intercommunication damping hole (201) of second grease chamber (105) and third grease chamber, piston rod (20) inside is equipped with regulating part (40), be equipped with regulation hole (401) on regulating part (40), the upper end seal of actuating lever (30) is worn to appear top seal seat (101) and the control at cylinder body (10) top The lower end of the driving rod (30) extends into the interior of the piston rod (20) and is connected with the adjusting piece (40), and the control assembly is used for controlling the rotation of the adjusting piece (40) so as to shield or at least partially expose the damping hole (201).

2. The adjustable rebound damping force front fork oil stick as set forth in claim 1, wherein the adjusting member (40) is provided with a stopper portion (402), the damping hole (201) has a first stopper end portion and a second stopper end portion, and the rotation of the adjusting member (40) relative to the piston rod (20) is restricted when the stopper portion (402) abuts against the first stopper end portion or the second stopper end portion.

3. The adjustable rebound damping force front fork stick as set forth in claim 2, wherein said stop portion (402) is a stop pin.

4. The adjustable rebound damping force front fork oil stick as set forth in claim 1, wherein the adjustment hole (401) is provided in a side wall of the adjuster (40), the adjustment hole (401) is provided in a circumferential direction of the adjuster (40) and has a ring shape, and the damping hole (201) is provided in a circumferential direction of the piston rod (20) and has a ring shape.

5. The adjustable rebound damping force fork stick as set forth in claim 4, wherein the adjuster (40) is of a cylindrical configuration, the adjuster (40) is provided with an insertion through hole, the bottom of the adjuster (40) is provided with a strip-shaped opening, and the lower end of the driving rod (30) is provided with a flat configuration which is in sealing engagement with the strip-shaped opening.

6. The rebound damping force adjustable front fork stick as set forth in claim 1, wherein the control assembly comprises a rebound adjusting knob (50), the rebound adjusting knob (50) comprising a lever portion (501) and a cap portion (502), the lever portion (501) being inserted into the tip seal seat (101) to be connected to the upper end of the driving lever (30), the cap portion (502) being connected to the lever portion (501) and protruding from the tip seal seat (101).

7. The adjustable rebound damping force front fork oil stick as set forth in claim 6, wherein the upper end of the driving rod (30) is threadedly connected to the lower end of the rotary rod part (501).

8. The oil rod for the front fork with the adjustable rebound damping force as set forth in claim 7, wherein a connecting hole is formed at an upper end of the driving rod (30), the connecting hole is not formed through the driving rod (30), an internal thread is formed in the connecting hole, and an external thread adapted to the internal thread is formed on the rotating rod portion (501).

9. The adjustable rebound damping force front fork oil stick as set forth in claim 1, further comprising a sliding sleeve (60), a rebound spring (70) and a rebound retainer (80), the sliding sleeve (60) is movably sleeved outside the piston rod (20), the rebound retainer ring (80) and the rebound spring (70) are both sleeved outside the piston rod (20), and the rebound spring (70) is positioned between the sliding sleeve (60) and the rebound retainer ring (80), a plurality of rebound fluid channels (1030) axially penetrate through the sliding valve core (103), the rebound fluid passage (1030) communicating the first oil chamber (104) with the second oil chamber (105), one end of the rebound spring (70) is propped against the rebound retainer ring (80), the other end of the rebound spring (70) is propped against the sliding sleeve (60), such that the sliding sleeve (60) is normally in obstruction proximity to the plurality of rebound fluid passages (1030).

10. The rod as claimed in claim 1, wherein an annular groove is formed on the outside of the sliding valve element (103), an annular snap ring (106) is embedded in the annular groove, the outer circumferential surface of the annular snap ring (106) is in sliding contact with the inner circumferential surface of the cylinder (10), the annular snap ring (106) is provided with a gap (107), and an oil body reciprocates in the first oil chamber (104) and the second oil chamber (105) from the gap (107) to form an oil path along the edge.