CN107914814B - Shock absorbing device for front fork of bicycle - Google Patents
Shock absorbing device for front fork of bicycle Download PDFInfo
- Publication number
- CN107914814B CN107914814B CN201610879759.0A CN201610879759A CN107914814B CN 107914814 B CN107914814 B CN 107914814B CN 201610879759 A CN201610879759 A CN 201610879759A CN 107914814 B CN107914814 B CN 107914814B
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- China
- Prior art keywords
- piston rod
- front fork
- bicycle
- piston
- top end
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- 230000035939 shock Effects 0.000 title claims abstract description 30
- 239000000725 suspension Substances 0.000 claims 4
- 230000003139 buffering effect Effects 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/12—Handlebars; Handlebar stems
- B62K21/14—Handlebars; Handlebar stems having resilient parts therein
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K21/00—Steering devices
- B62K21/04—Fork crowns
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
A shock absorbing device for a front fork of a bicycle is provided in a head tube of a handlebar of the bicycle. The shock absorbing device has a cylinder, the bottom end of which is fixedly connected with a base of the bicycle front fork, and the top end of which penetrates into the head tube. A piston rod, the top end of which is fixedly connected with the inner wall of the head tube and the bottom end of which is provided with a piston which extends into the cylinder barrel. The piston rod is connected with a spring device which has the force for pushing the piston rod to leave the cylinder barrel. The invention is mainly characterized in that an air chamber is arranged in the cylinder barrel below the piston, the air chamber is communicated with an air inlet valve of the base, and the buffer pressure of the spring device can be further adjusted by adjusting the air pressure in the air chamber, so that a user can adjust the shock absorbing pressure of the front fork in application.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to a shock absorbing device for a front fork of a bicycle, and more particularly, to a device capable of adjusting shock absorbing pressure of a front fork of a bicycle.
[ background of the invention ]
The conventional shock absorbing device for a front fork of a bicycle is disposed in a head tube of a bicycle handlebar, and the shock absorbing device has a cylinder barrel, a bottom end of which is fixedly connected to a base of the front fork of the bicycle, and a top end of which penetrates into the head tube. A piston rod, the top end of which is fixedly connected with the inner wall of the head tube and the bottom end of which is provided with a piston which extends into the cylinder barrel. The spring device has a top end fixedly connected with the top end of the piston rod and a bottom end connected with the cylinder barrel, and has the force for pushing the head pipe and the piston rod upwards. The magnitude of the cushioning pressure of the conventional bicycle front fork cushioning device is completely dependent on the selection of the spring rate of the spring device, and the manufacturer can assemble a cushioning device with any spring rate, so that the cushioning pressure of the front fork is fixed and cannot be adjusted by the user unless another spring device is replaced. The prepressing of the buffer device is set during assembly, which can not meet different requirements of different shock absorbing effects of everyone and obviously needs to be improved.
[ summary of the invention ]
The present invention is to provide a shock absorbing device for a bicycle front fork, which can adjust the pre-load of shock absorbing inside the bicycle front fork.
In order to achieve the above object, the main features of the present invention are: an air chamber is arranged in the cylinder barrel below the piston, the air chamber is communicated with an air inlet valve on the base, and the buffering pressure of the spring device can be further adjusted by adjusting the air pressure in the air chamber, so that a user can adjust the shock absorbing pressure of the front fork.
The technical scheme of the invention is detailed as follows:
a shock absorbing device for a front fork of a bicycle is characterized in that: a cylinder, the bottom end of which is fixedly connected with a base of the front fork of the bicycle and the top end of which penetrates into the interior of a head pipe of the bicycle; a piston rod, the top end of which is fixedly connected with one position of the inner wall of the head pipe and the bottom end of which is provided with a piston which extends into the cylinder barrel; a spring device, which is arranged between the piston rod and the cylinder barrel and has the force for pushing the head tube and the piston rod upwards; the buffer seat is sleeved outside the piston rod and is positioned between the piston and a limit wall in the cylinder barrel; and an air chamber located in the cylinder below the piston, the air chamber being communicated with an air inlet valve located on the base.
In the above shock absorbing device for a front fork of a bicycle, an air inlet pipe is disposed inside the base and extends from an air inlet end of the air inlet valve to the air chamber.
The shock absorbing device of the bicycle front fork further comprises a sleeve, the sleeve is sleeved between the outer wall above the cylinder barrel and the head pipe, the outer wall of the sleeve is provided with a plurality of slots which are arranged at intervals, the long ends of the slot holes are axially arranged, and each slot is respectively embedded with a ball; the outer wall of the upper part of the cylinder barrel is provided with a plurality of chutes which are arranged at intervals and are arranged axially, and the balls of the sleeve are embedded into the corresponding chutes.
In the shock absorbing device for the front fork of the bicycle, the spring device is composed of a first spring and a second spring, the first spring is longer than the second spring, the first spring is arranged in the second spring, the top ends of the first spring and the second spring are fixedly connected with the top end of the piston rod, and the bottom ends of the first spring and the second spring are in contact with the cylinder barrel.
The shock absorbing device of the bicycle front fork is further provided with a base, the base is sleeved outside the piston rod and located above the limiting wall, and the top end of the base is fixedly connected with the first spring.
The shock absorbing device of the bicycle front fork is further provided with a positioning seat, the positioning seat is sleeved outside the piston rod and is positioned below the limiting wall, and the bottom end of the positioning seat is attached to the top end of the buffer seat.
The invention has the beneficial effects that: an air chamber is arranged in the cylinder barrel below the piston, the air chamber is communicated with an air inlet valve on the base, and the buffering pressure of the spring device can be further adjusted by adjusting the air pressure in the air chamber, so that a user can adjust the shock absorbing pressure of the front fork.
[ description of the drawings ]
FIG. 1 is an external view of an embodiment of the present invention disposed inside a front fork tube.
FIG. 2 is a front cross-sectional view of an embodiment of the present invention disposed within a front fork tube.
FIG. 3 is a side cross-sectional view of an embodiment of the present invention disposed within a front fork tube.
Fig. 4 is a partially enlarged view of fig. 2.
Figure 5 is an exploded view, partially in section, of an embodiment of the present invention.
Fig. 6 is a partially enlarged view of fig. 3.
FIG. 7 is a schematic view of the gas filling into the chamber according to the embodiment of the present invention.
FIG. 8 is a schematic view of an embodiment of the present invention filling more gas into the gas chamber.
The numbers in the figures illustrate the following:
Piston rod 11 piston 110 joint seat 111 sleeve 11A
Slotted 11B ball 11C spring arrangement 12 first spring 120
Intake pipe 32 elastic extension lengths L, L1, L2 of intake valve 31
[ detailed description ] embodiments
Referring to fig. 1-5, the shock absorbing device 1 of the present invention has a cylinder 10, the bottom end of which is fixedly connected to a base 30 above the front fork 3 of the bicycle, and the top end of which penetrates into a head tube 2. A piston rod 11, the top end of which is provided with a combining seat 111 fixedly connected with one position of the inner wall of the head pipe 2, so that the piston rod 11 and the head pipe 2 are linked integrally; the bottom end of the piston rod 11 is provided with a piston 110 and extends into the cylinder 10. A spring device 12, the top end of which is fixedly connected with the top end of the piston rod 11, and the bottom end of which is connected with the cylinder 10, and which has the force for pushing the head pipe 2 and the piston rod 11 upwards; and a buffer seat 13, which is elastically sleeved outside the piston rod 11 and is located between the piston 110 and a limiting wall 100 protruding inwards from the inner wall of the cylinder 10. An air chamber 14 is disposed in the cylinder 10 below the piston 110, and the air chamber 14 communicates with an air inlet valve 31 on the base 30, thereby adjusting the pressure inside the air chamber 14.
Referring to fig. 2, 3 and 5, the base 30 has an air inlet pipe 32 therein, and the air inlet pipe 32 extends from the air inlet end of the air inlet valve 31 to the air chamber 14.
Referring to fig. 4-6, the shock absorbing device 1 has a sleeve 11A, the sleeve 11A is inserted between the upper outer wall of the cylinder 10 and the head pipe 2, and limits the head pipe 2 to move only in the axial direction. The sleeve 11A has a plurality of slots 11B arranged at intervals on the surface and the long end of the hole is arranged axially, and each slot 11B is respectively embedded with a ball 11C. The outer wall of the cylinder 10 is provided with a plurality of axially disposed sliding grooves 101 at intervals, and the balls 11C of the sleeve 11A are embedded into the corresponding sliding grooves 101.
Referring to fig. 4-6, the spring device 12 is mainly composed of a first spring 120 and a second spring 121. The first spring 120 is longer than the second spring 121, the first spring 120 is disposed in the second spring 121, the top ends of the first and second springs 120, 121 are fixedly connected to the coupling seat 111, the bottom ends of the first and second springs 120, 121 are respectively connected to a fixed position of the cylinder 10, and the first and second springs have a force for pushing the head tube 2 and the piston rod 11 upward.
Referring to fig. 4-6, the shock absorbing device 1 has a base 15, the base 15 is disposed above the limiting wall 100 and is inserted into the piston rod 11, and the top end of the base 15 is used for contacting the bottom end of the first spring 120.
Referring to fig. 4-6, the shock absorbing device 1 has a positioning seat 16, the positioning seat 16 is sleeved in the piston rod 11 and located below the limiting wall 100, and is limited by the limiting wall 100 and can not move above the limiting wall 100 any more. The bottom end of the positioning seat 16 is attached to the top end of the buffer seat 13.
In use, if the air chamber 14 is not filled with air, the spring device 12 (the first spring 120 and the second spring 121) has an elastic extension length L (as shown in fig. 6). When the gas filled from the gas inlet valve 31 enters the gas chamber 14, the gas pressure in the gas chamber 14 pushes the piston 110 to compress the buffer seat 13 and slide upward, so that the piston rod 11 and the head pipe 2 displace upward, and the spring device 12 (the first spring 120 and the second spring 121) has an elastic stretching length L1 (as shown in fig. 7) longer than the elastic stretching length L of fig. 6, thereby adjusting the shock absorbing pressure of the spring device 12.
Referring to fig. 8, if more gas is filled into the gas chamber 14, the gas pressure in the gas chamber 14 increases and pushes the piston 110 to strongly press the buffer seat 13, so that the buffer seat 13 deforms and the piston rod 11 and the head tube 2 move upward, and as the first spring 120 and the second spring 121 are stretched more, the elastic stretching length L2 is longer, so that the shock absorbing stroke of the shock absorbing device 1 can be lengthened.
Therefore, the gas is filled into the air chamber, so that the rider can adjust the pre-pressure of the shock absorbing device 1 by himself, and the buffering pressure can be adjusted according to personal needs.
Claims (5)
1. A shock absorbing device for a front fork of a bicycle is characterized in that: a cylinder, the bottom end of which is fixedly connected with a base of the front fork of the bicycle and the top end of which penetrates into the interior of a head pipe of the bicycle; a piston rod, the top end of which is fixedly connected with one position of the inner wall of the head pipe and the bottom end of which is provided with a piston which extends into the cylinder barrel; the top end of the spring device is fixedly connected with the top end of the piston rod, and the bottom end of the spring device is connected with a fixing device of the cylinder barrel and has the force for pushing the head pipe and the piston rod upwards; the buffer seat is sleeved outside the piston rod and is positioned between the piston and a limit wall in the cylinder barrel; and an air chamber located in the cylinder below the piston, the air chamber being communicated with an air inlet valve located on the base; when the air is filled into the air chamber by the air inlet valve, the air pressure in the air chamber pushes the piston to compress the buffer seat and slide upwards, so that the piston rod and the head pipe move upwards along with the piston rod, the spring device has an elastic stretching length, and the shock-absorbing pressure of the spring device is adjusted.
2. The suspension device for a bicycle front fork of claim 1, wherein: the base is internally provided with an air inlet pipe, and the air inlet pipe extends into the air chamber from an air inlet end of the air inlet valve.
3. The suspension device for a bicycle front fork according to claim 1 or 2, characterized in that: the sleeve is sleeved between the outer wall above the cylinder barrel and the head pipe, the outer wall of the sleeve is provided with a plurality of slots which are arranged at intervals, the long ends of the slot holes are axially arranged, and each slot is respectively embedded with a ball; the outer wall of the upper part of the cylinder barrel is provided with a plurality of chutes which are arranged at intervals and are arranged axially, and the balls of the sleeve are embedded into the corresponding chutes.
4. The suspension device for a bicycle front fork of claim 3, wherein: the piston rod is sleeved with a piston rod, the piston rod is provided with a limiting wall, the limiting wall is arranged on the piston rod, and the top end of the limiting wall is fixedly connected with the spring device.
5. The suspension device for a bicycle front fork of claim 3, wherein: the piston rod is sleeved with the piston rod, the piston rod is sleeved with the positioning seat, the positioning seat is arranged below the limiting wall, and the bottom end of the positioning seat is attached to the top end of the buffer seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610879759.0A CN107914814B (en) | 2016-10-09 | 2016-10-09 | Shock absorbing device for front fork of bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610879759.0A CN107914814B (en) | 2016-10-09 | 2016-10-09 | Shock absorbing device for front fork of bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107914814A CN107914814A (en) | 2018-04-17 |
| CN107914814B true CN107914814B (en) | 2020-04-07 |
Family
ID=61891646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610879759.0A Active CN107914814B (en) | 2016-10-09 | 2016-10-09 | Shock absorbing device for front fork of bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107914814B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108482559A (en) * | 2018-05-25 | 2018-09-04 | 张学田 | Bicycle gas control stretching handle |
| TWI744598B (en) * | 2019-01-07 | 2021-11-01 | 美商速聯有限責任公司 | Suspension system for bicycle |
| TWI741852B (en) * | 2020-10-26 | 2021-10-01 | 六哥股份有限公司 | Single-gun shock-absorbing front fork structure and shock-absorbing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2163132Y (en) * | 1993-06-16 | 1994-04-27 | 申劦金属制造股份有限公司 | Bicycle front fork shock absorber |
| CN201283980Y (en) * | 2008-09-11 | 2009-08-05 | 林佑宪 | Middle pipe locating single shock-proof front fork |
| CN102837788A (en) * | 2011-06-21 | 2012-12-26 | 祁成 | Damper for front fork of electric bicycle |
| CN204323620U (en) * | 2014-12-23 | 2015-05-13 | 王冲 | Single shock-proof front-fork assembly montant |
| CN206317954U (en) * | 2016-10-09 | 2017-07-11 | 台湾穗高工业股份有限公司 | The shock absorbing apparatus of bicycle front fork |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9132881B2 (en) * | 2012-05-25 | 2015-09-15 | Hayes Bicycle Group, Inc. | Rubber isolation system incorporated between the compression rod and the gas spring assembly of a bicycle fork |
-
2016
- 2016-10-09 CN CN201610879759.0A patent/CN107914814B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2163132Y (en) * | 1993-06-16 | 1994-04-27 | 申劦金属制造股份有限公司 | Bicycle front fork shock absorber |
| CN201283980Y (en) * | 2008-09-11 | 2009-08-05 | 林佑宪 | Middle pipe locating single shock-proof front fork |
| CN102837788A (en) * | 2011-06-21 | 2012-12-26 | 祁成 | Damper for front fork of electric bicycle |
| CN204323620U (en) * | 2014-12-23 | 2015-05-13 | 王冲 | Single shock-proof front-fork assembly montant |
| CN206317954U (en) * | 2016-10-09 | 2017-07-11 | 台湾穗高工业股份有限公司 | The shock absorbing apparatus of bicycle front fork |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107914814A (en) | 2018-04-17 |
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