KR101189492B1 - Bicycle suspension - Google Patents

Bicycle suspension Download PDF

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Publication number
KR101189492B1
KR101189492B1 KR20100060295A KR20100060295A KR101189492B1 KR 101189492 B1 KR101189492 B1 KR 101189492B1 KR 20100060295 A KR20100060295 A KR 20100060295A KR 20100060295 A KR20100060295 A KR 20100060295A KR 101189492 B1 KR101189492 B1 KR 101189492B1
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South Korea
Prior art keywords
cylinder
upper cylinder
support rod
coupled
hole
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KR20100060295A
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Korean (ko)
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KR20120000126A (en
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안왕기
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안왕기
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Publication of KR101189492B1 publication Critical patent/KR101189492B1/en

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  • Mechanical Engineering (AREA)
  • Fluid-Damping Devices (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

The present invention relates to a bicycle suspension, wherein the bicycle suspension according to the present invention is a support rod that extends in a vertical direction, and the support rod penetrates the handle stem of the bicycle and the chassis frame frame of the bicycle so that the handle stem of the bicycle is around. And a support rod to which the chassis frame is coupled, a connection portion that is coupled to the lower portion of the support rod and extends in one side from the portion coupled with the support rod, and an upper portion thereof extends downward in combination with the connection portion, and the lower surface is opened and opened therein. And an upper cylinder having a length formed upwardly from the lower surface thereof, and having an upper cylinder having a key protruding in the outer diameter direction on the outer circumferential surface of the lower portion, and an end member fixedly coupled to the inner circumferential surface of the lower portion of the upper cylinder and having oil holes penetrated in the vertical direction. Inside of the upper cylinder above the end member A piston installed to reciprocate in a vertical direction in a space, a lower end of which is in contact with an upper surface of the piston, and an upper end of which is in contact with an upper surface of an inner space of the upper cylinder, and an auxiliary buffer spring which is carbon-supported in the inner space of the upper cylinder; An intermediate coupling portion coupled to the circumference of the upper cylinder and guided by the upper cylinder to be reciprocated in the vertical direction by the formation of a hole through which the upper cylinder penetrates is coupled to an upper circumference of the upper cylinder below the connecting portion. Disc brake and a portion formed with a spring cap, an upper buffer spring is installed between the lower surface of the spring cap and the upper surface of the intermediate coupling portion and installed around the upper cylinder, the hub coupling hole for coupling with the central shaft of the front wheel hub In which disc brake coupling holes are formed The powder is integrally formed by being connected to the outer surface of the lower end, and the upper surface is opened, and a space is formed from the upper surface of which is opened. The upper cylinder is partially inserted into the inner space, and the upper end is fixedly coupled to the intermediate coupling part. A key groove is formed in the vertical direction so that the key is inserted and moved vertically so that the key is inserted, and the inner space includes a lower cylinder filled with oil and a lower buffer spring installed in the inner space of the lower cylinder.

Description

Bicycle suspension {omitted}

The present invention relates to a bicycle suspension, and more particularly, unlike a conventional bicycle suspension, the driver can safely change direction during driving with only one axis, and the shock absorbing spring primarily absorbs shock and vibration loads and the shock absorbing spring. This invention relates to a bicycle suspension that is excellent in shock absorption and easy to repair a bicycle by mitigating residual vibrations by using hydraulic oil.

The conventional suspension fork consists of a double central axis, with the fork at the bottom of the suspension fork, combining the left and right front wheel hubs with the fork, and when the driver breaks the tire while driving, It is a method of separating and repairing, and when the driver has a slight error when combining the front wheel hub, it takes longer because the disc brake or rubber brake does not fit well and needs to be recombined again. In addition, the hydraulic oil spring air method is widely applied to the double central axis of the suspension fork to the impact vibration load generated in the state of the road surface while driving, there is a problem that the weight of the suspension fork is heavy.

The present invention has been made to solve the problems of the prior art, the present invention, unlike the conventional bicycle suspension, the driver can safely change the direction of driving with only one axis, the shock absorbing spring is the primary impact vibration load The purpose of the present invention is to provide a suspension for a bicycle that is excellent in shock absorption and easy to repair the bicycle by absorbing the oil and absorbing the residual vibration of the shock absorbing spring using hydraulic oil.

The bicycle suspension according to the present invention for achieving the above object is a support rod that extends in the vertical direction as the support rod penetrates the handle stem of the bicycle and the handle frame of the bicycle frame stem of the bicycle by the periphery of the bicycle frame stem of the bicycle. A support rod to which the chassis frame is coupled, a connection portion that is coupled to the lower portion of the support rod and extends in one side from a portion coupled with the support rod, and an upper portion extends downwardly in combination with the connection portion, and a lower surface is opened and opened therein. An upper cylinder having a length formed upwardly from a lower surface thereof, and having an upper cylinder with a key protruding in the outer diameter direction on an outer circumferential surface of the lower portion, an end member fixedly coupled to an inner circumferential surface of a lower portion of the upper cylinder, and having an oil hole penetrated in a vertical direction; An inner ball of the upper cylinder above the end member A piston which is installed to reciprocate in a vertical direction at a lower end, and an auxiliary buffer spring which is carbon-supported in an inner space of the upper cylinder by touching an upper end of the upper cylinder and an upper end of the inner space of the upper cylinder; An intermediate coupling portion coupled to the circumference of the upper cylinder and guided by the upper cylinder to allow a reciprocating movement in the vertical direction by forming a hole through which the cylinder penetrates, and a spring coupled to the upper circumference of the upper cylinder below the connecting portion. A disc and a brake having an upper buffer spring installed between the cap, a lower surface of the spring cap and an upper surface of the intermediate coupling part, the upper cushioning spring installed around the upper cylinder, and a hub coupling hole for coupling with the central shaft of the front wheel hub; Disc brake coupling holes for coupling A space is formed integrally with the outer surface of the lower end, and the upper surface is opened, and a space is formed from the upper surface which is opened downward, and a part of the upper cylinder is inserted into the inner space, and the upper end is fixedly coupled to the intermediate coupling portion and A key groove is formed in the vertical direction so that the key is inserted and moved vertically on the side, and the inner space includes a lower cylinder filled with oil and a lower buffer spring installed in the inner space of the lower cylinder.

In addition, a cap insertion space having an upper surface opened at an upper portion of the support rod is formed, and a female screw portion is provided at a bottom surface of the cap insertion space, and a bolt head is provided at an upper end thereof, and a coupling bolt and the coupling bolt coupled to the female screw portion of the support rod. A bolt hole is formed to penetrate through, and a bolt head groove is formed in the upper part of the bolt hole to hold the bolt head of the coupling bolt. The lower part is inserted into the cap insertion space of the support rod, and the upper part is the outer diameter of the upper end of the support rod. It is preferable to further include a tightening cap that is formed larger and spans the upper end of the support rod.

In addition, the upper end is preferably coupled to the spring cap and the lower end is coupled to the intermediate coupling portion, and further comprises a spring cover having a flexible corrugated pipe structure surrounding the upper buffer spring.

In addition, a through hole in a vertical direction is formed in the connection portion, an upper end portion of the upper cylinder is inserted into the through hole of the connection portion, and a bolt hole having a thread formed therein is formed on an upper surface of the upper cylinder, and a thread is formed at the lower portion thereof. It is preferable that a head bolt is integrally formed with a bolt head inserted into the bolt hole and screwed to the upper end, wherein the bolt head is integrally formed around the upper end of the through hole of the connection part.

In addition, a gasket is preferably provided between the intermediate coupling portion and the lower cylinder to prevent leakage.

As described above, according to the bicycle suspension according to the present invention does not use the fork and can be assembled by only one combination with the center of the front wheel hub is easy to assemble, there is only one shaft instead of two wheels and the connecting shaft. This eliminates the need to separate the suspension from the wheel hubs when replacing the tires, which means that the tires can be repaired immediately in case of tire breakage and puncture. In addition, there is an advantage that the driver can safely change direction while driving with only one wheel and the connecting axis. In addition, the shock absorbing spring primarily absorbs shock vibration loads and mitigates the residual vibrations of the shock absorbing springs using hydraulic oil, so that the suspension can absorb shocks without excessively contracting the springs to absorb shocks. Therefore, there is an advantage that greatly helps the driving stability of the bicycle.

1 is a front sectional view showing a bicycle suspension according to the present invention.
Figure 2a is a side cross-sectional view showing a lower cylinder of the bicycle suspension according to the present invention.
Figure 2b is a plan view showing a lower cylinder of the bicycle suspension according to the present invention.
Figure 3a is a side cross-sectional view showing an upper cylinder of the bicycle suspension according to the invention.
Figure 3b is a bottom view of the upper cylinder of the bicycle suspension according to the invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a front sectional view showing a bicycle suspension according to the present invention, Figure 2a is a side sectional view showing a lower cylinder of the bicycle suspension according to the invention, Figure 2b is a plan view showing a lower cylinder of the bicycle suspension according to the present invention, Figure 3a is a side cross-sectional view showing the upper cylinder of the bicycle suspension according to the invention, Figure 3b is a bottom view showing the upper cylinder of the bicycle suspension according to the invention.

The support rod 100 is a circular rod extending in the vertical direction. The support rod 100 sequentially passes through the hole of the handle stem of the bicycle and the hole of the chassis frame of the bicycle, and is located below the handle stem of the bicycle and the handle stem of the bicycle. This is the part to be combined.

A cap insertion space 110 having an upper surface opened is formed at an upper portion of the support rod 100, and a female screw part 120 is provided at a bottom surface of the cap insertion space 110. The lower part of the supporting rod 100 has an open lower surface and is hollow. The reason why a lot of space is formed inside the support rod (100) is to reduce the weight of the support rod (100).

The lower end of the coupling bolt 200 provided with a bolt head 210 at the upper end is screwed to the female screw 120 inside the support rod 100. The coupling bolt 200 penetrates the tightening cap 300, and a bolt hole is formed in the tightening cap 300 so that the coupling bolt 200 penetrates, and the bolt head 210 of the coupling bolt 200 is formed at the upper portion of the bolt hole. The bolt head groove is formed to be seated, the lower portion of the tightening cap 300 is inserted into the cap insertion space 110 of the support rod 100, the upper portion of the tightening cap 300 is the outer diameter of the support rod 100 It is formed to be larger than the outer diameter of the upper end portion of the support rod 100 over the upper end portion. It is preferable that the stopper 220 is inserted directly above the bolt head 210 of the coupling bolt 200 among the bolt holes of the tightening cap 300 so that rain water does not accumulate in the bolt holes.

The lower circumference of the support bar 100 is tightly coupled to each other by welding the connection part 400 through the hole of the connection part 400. The connection part 400 extends in the left direction from the portion coupled with the support rod 100 as shown in FIG. 1. The groove 410 is drilled in the lower portion of the middle portion of the connecting portion 400, which is to reduce the weight. The through hole in the vertical direction is formed in the left portion of the connecting portion 400, the upper end of the upper cylinder 600 is inserted into the through hole of the connecting portion 400, the upper surface of the upper cylinder 600 is a bolt hole with a thread formed therein 620 is formed, the lower end of the thread is formed is inserted into the bolt hole 620 is screwed and the upper end is provided with a head bolt 500 is integrally formed with a bolt head that spans the upper circumference of the through hole of the connection portion The coupling portion 400 and the upper cylinder 600 and the head bolt 500 are coupled to each other. In order to separate the connection part 400 and the upper cylinder 600, only the head bolt 500 needs to be released. It is preferable that a stopper 510 is fitted in the hole just above the bolt head of the head bolt 500 so that rain water or the like does not collect in the bolt hole.

The spring cap 700 is installed around the upper cylinder 600 so as to surround the upper cylinder 600 while being in contact with the bottom surface of the connection part 400.

In addition, the intermediate coupling portion 800 is a ring-shaped member is installed around the lower portion of the upper cylinder 600 to surround the lower portion of the upper cylinder 600, the intermediate coupling portion 800 is capable of sliding in the vertical direction. . The upper surface of the intermediate coupling portion 800 is provided with a ring spring support cap 710 surrounding the upper cylinder 600. The upper buffer spring 900 is carbon-bearing between the spring cap 700 and the spring support cap 710 and is penetrated by the upper cylinder 600.

A spring cover 1000 in the form of a flexible corrugated pipe is installed around the upper shock absorbing spring 900 to prevent the upper shock absorbing spring 900 from being exposed to the outside. The upper hole of the spring cover 1000 is fitted around the spring cover 1000, and the lower hole of the spring cover 1000 is fitted around the spring support cap 710.

As shown in Figure 3b, the lower end of the upper cylinder 600 is provided with a key 610 is formed to protrude in the outer four directions. Each key is formed long in the vertical direction.

As shown in FIG. 3A, a thread is formed on the inner circumferential surface of the lower end of the upper cylinder 600, so that an end member 1100 having a thread formed on the outer circumferential surface and having an oil hole 1120 penetrated in the vertical direction is provided with an upper cylinder ( Screwed to the inner peripheral surface of the lower end of 600). Four tool insertion grooves 1110 are provided on the bottom surface of the end member 1100.

An auxiliary buffer spring 1200 is installed above the inner space of the upper cylinder 600, and a piston 1300 is slidably installed at a lower end of the auxiliary buffer spring 1200. The lower surface of the piston 1300 is located above the end member 1100. When the piston 1300 rises, the auxiliary buffer spring 1200 contracts, and when the auxiliary buffer spring 1200 expands to the maximum, the auxiliary buffer spring 1200 descends until it reaches the end member 1100. The piston sealing structure 1310 is provided around the piston 1300 so that oil does not leak. It is preferable that a concave groove 1320 is formed in the center of the lower surface of the piston 1300.

The intermediate coupling portion 800 has a thread formed on the outer circumferential surface of the lower portion, and the lower cylinder 1400 has a thread formed on the inner circumferential surface of the upper portion as shown in FIG. 2A, so that the lower and lower cylinders of the intermediate coupling portion 800 are formed. As the upper portion of the 1400 is screwed together, the intermediate coupling portion 800 and the lower cylinder 1400 are moved up and down together.

As shown in FIG. 2B, the lower cylinder 1400 has four key grooves 1410 formed therein, and the key grooves 1410 are formed by digging in the vertical direction. The key 610 of the upper cylinder 600 is slidably inserted in the vertical direction into the key groove 1410 of the lower cylinder 1400. Thus, the lower portion of the upper cylinder 600 is inserted into the inner space of the lower cylinder 1400.

The lower cylinder 1400 is filled with oil, and the lower buffer spring 1500 is installed. The upper end of the lower shock absorbing spring 1500 touches the lower end of the upper cylinder 600, and the lower end of the lower shock absorbing spring 1500 touches the bottom surface of the inner space of the lower cylinder 1400 to be coalesced.

As shown in FIG. 2A, two flange parts having a disc brake connecting hole 1600 are coupled to the lower front of the lower cylinder 1400 up and down. In addition, a flange portion having a hole 1700 for engaging with the front wheel hub central axis of the bicycle is coupled to the lower rear of the lower cylinder 1400. In addition, a hole 1420 for oil injection and discharge is formed at the center of the lower surface of the lower cylinder 1400, and a bolt 1800 serving as a stopper is inserted and screwed thereto.

Between the middle coupling portion 800 and the key 610 of the upper cylinder 600, a washer 1900 at the top and a ring member 2000 are installed in the lower portion, and the intermediate coupling portion 800 and the spring support cap 710 are installed in this order. And an oil packing 2100 is installed between the washer 1900 and the ring member 2000 to prevent leakage of oil.

Referring to the operation of the bicycle suspension according to the present invention configured as described above are as follows.

When an impact is applied to the front wheel of the bicycle upward from the ground, the lower cylinder 1400 moves upward to contract the upper shock absorbing spring 900 and the lower shock absorbing spring 1500 to absorb the shock. In addition, the oil inside the lower cylinder 1400 flows into the inner space of the upper cylinder 600 through the oil hole 1420 to push up the piston 1300 to contract the auxiliary buffer spring 1200. When the upward impact is eliminated, the auxiliary buffer spring 1200 expands and the piston 1300 presses oil to return oil to the lower cylinder 1400, and the upper buffer spring 900 and the lower buffer spring 1500 are also Swell. In this process, residual vibration is eliminated due to the action of oil, and the damping function is prevented by sudden expansion and contraction of the spring.

Unlike the conventional suspension, since only one side of the wheel passes the suspension, even when the tire is replaced due to the puncture of the tire, the tire can be replaced without the need to separate the suspension from the wheel.

As described above, the present invention has been described only with respect to specific examples, but it will be apparent to those skilled in the art that various changes and modifications can be made within the technical spirit of the present invention based on the above specific examples. And modifications belong to the appended claims.

100: support rod 200: coupling bolt
300: tightening cap 400: connecting portion
500: head bolt 600: upper cylinder
700: spring cap 710: spring support cap
800: intermediate coupling portion 900: upper buffer spring
1000: spring cover 1100: end member
1200: auxiliary buffer spring 1300: piston
1400: lower cylinder 1500: lower buffer spring
1600: disc brake connector 1700: front wheel hub hole
1900: washer 2000: ring member
2100: oil packing

Claims (5)

A support rod extending in a vertical direction, the support rod penetrating the hole of the handle stem of the bicycle and the chassis frame hole of the bicycle to support the handle stem and the chassis frame of the bicycle;
A connection portion coupled to the lower portion of the support rod and extending in one direction from a portion coupled with the support rod;
An upper cylinder coupled to the connection part to extend in a downward direction, an upper surface of which is formed at a lower surface of the lower portion, and a length of a lower hole formed upwardly from the lower surface of the lower portion;
An end member fixedly coupled to an inner circumferential surface of the lower end of the upper cylinder and having an oil hole penetrated in a vertical direction;
A piston installed to reciprocate in a vertical direction in an inner space of the upper cylinder above the end member;
An auxiliary cushioning spring having a lower end contacting an upper surface of the piston and an upper end contacting an upper surface of an inner space of the upper cylinder and being carbon-supported in the inner space of the upper cylinder;
An intermediate coupling portion coupled to the circumference of the upper cylinder and guided by the upper cylinder to allow a reciprocating motion in a vertical direction by forming a hole through which the upper cylinder penetrates;
A spring cap coupled to an upper circumference of the upper cylinder below the connection portion;
An upper shock absorbing spring installed between the lower surface of the spring cap and the upper surface of the intermediate coupling part and installed around the upper cylinder;
The portion where the hub coupling hole for coupling with the central shaft of the front wheel hub is formed and the disc brake coupling hole for coupling with the disc brake are formed integrally with the outer surface of the lower end, and the upper surface is opened and opened from the upper surface. A downwardly long space is formed so that a portion of the upper cylinder is inserted into the inner space, and an upper end is fixedly coupled to the intermediate coupling portion, and an inner side of the key groove is formed to be vertically long so that the key can be inserted and moved up and down. A lower cylinder filled with oil; And
Bicycle suspension, characterized in that it comprises a lower buffer spring is installed in the inner space of the lower cylinder. The method of claim 1,
An upper surface of the cap insertion space is formed in the upper portion of the support rod, the bottom surface of the cap insertion space is provided with a female screw portion,
The bolt head is provided at the upper end and the coupling bolt coupled to the female screw portion of the support rod; And
A bolt hole is formed to penetrate the coupling bolt, and a bolt head groove is formed at an upper portion of the bolt hole so that the bolt head of the coupling bolt is caught. The lower portion is inserted into a cap insertion space of the support rod, and the upper portion has an outer diameter. The suspension of the bicycle further comprises a tightening cap is formed larger than the outer diameter of the upper end of the support rod spans the upper end of the support rod. The method according to claim 1 or 2,
The upper end is coupled to the spring cap and the lower end is coupled to the intermediate coupling portion, the bicycle suspension further comprises a spring cover having a stretchable corrugated pipe structure surrounding the upper shock absorbing spring. The method according to claim 1 or 2,
Through holes in the vertical direction are formed in the connecting portion,
The upper end of the upper cylinder is inserted into the through hole of the connecting portion and the upper surface of the upper cylinder is formed with a threaded bolt hole therein,
The screw suspension is formed in the lower portion is inserted into the bolt hole is screwed and the upper end is provided with a head bolt that is integrally formed with a bolt head that extends around the upper end of the through hole of the connecting portion. delete
KR20100060295A 2010-06-25 2010-06-25 Bicycle suspension KR101189492B1 (en)

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KR20100060295A KR101189492B1 (en) 2010-06-25 2010-06-25 Bicycle suspension

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Application Number Priority Date Filing Date Title
KR20100060295A KR101189492B1 (en) 2010-06-25 2010-06-25 Bicycle suspension

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KR101189492B1 true KR101189492B1 (en) 2012-10-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101905068B1 (en) 2017-10-16 2018-10-05 한국기계연구원 Safe suspension apparatus for overcoming obstacle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101942233B1 (en) * 2018-01-28 2019-01-24 김원봉 Front suspension fork for bicycle
KR102195093B1 (en) * 2019-01-01 2020-12-24 김원봉 Front suspension fork for bicycle
KR102409910B1 (en) * 2019-12-02 2022-06-17 김원봉 Front suspension fork for bicycle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145862A (en) 1991-06-11 2000-11-14 Cannondale Corporation Bicycle suspension system
US6520524B1 (en) 1998-12-18 2003-02-18 Vincenzo F. Costa Motorcycle suspension components
KR100868875B1 (en) 2007-03-16 2008-11-14 조덕환 Bicycle for shocks absorbing mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6145862A (en) 1991-06-11 2000-11-14 Cannondale Corporation Bicycle suspension system
US6520524B1 (en) 1998-12-18 2003-02-18 Vincenzo F. Costa Motorcycle suspension components
KR100868875B1 (en) 2007-03-16 2008-11-14 조덕환 Bicycle for shocks absorbing mechanism

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101905068B1 (en) 2017-10-16 2018-10-05 한국기계연구원 Safe suspension apparatus for overcoming obstacle

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