CN203497125U - Bicycle speed-changing gearshift - Google Patents
Bicycle speed-changing gearshift Download PDFInfo
- Publication number
- CN203497125U CN203497125U CN201320629012.1U CN201320629012U CN203497125U CN 203497125 U CN203497125 U CN 203497125U CN 201320629012 U CN201320629012 U CN 201320629012U CN 203497125 U CN203497125 U CN 203497125U
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- Prior art keywords
- ratchet
- sector
- tensioning
- driving lever
- cover plate
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Abstract
A bicycle speed-changing gearshift comprises a rolling shaft for rolling up or releasing a speed-changing pulling wire, a ratchet wheel disc which is fixed with the rolling shaft and is provided with a plurality of sector teeth, pawl units which are kept being meshed with the sector teeth on the ratchet wheel disc and a lower supporting plate which is used for rolling up (tensioning) a tensioning stirring rod of the speed changing pulling wire and for releasing (loosening) a releasing stirring rod of the speed chaining pulling wire. The sector teeth for position retaining and position releasing and the sector teeth of a tensioning mechanism are arranged on the only ratchet wheel disc. Meanwhile, the releasing stirring rod and the pawl units are fixed on the lower supporting plate through the same pivot. When a user pulls or pushes the releasing stirring rod in different directions, the releasing stirring rod can press the pawl units to move in the same direction, instant meshing and separating can be generated on the sector teeth on a locating disc and pawls, and accordingly a bicycle speed-changing gear-shifting function can be achieved. The structure is reasonable, production cost and mounting cost can be lowered, the mounting space is reduced, and the weight of a speed changer is lowered.
Description
[technical field]
The utility model relates to a kind of bicycle gearshift.More especially, refer to the speed-changing mechanism of controlling bicycle shift steel wire.
[background technology]
Bicycle operating device is set to conventionally for allowing user manually change the gear of driving system.The handling device of this type is often called bicycle selector.In most of the cases, bicycle operating device is mounted to a part for handgrip or the vehicle frame of bicycle.Multilevel self car change-speed box typically comprises chain conventionally, be mounted to the one or more front sprocket wheel of front crank group and be mounted to a plurality of rear sprocket wheel on the rear-wheel hub of trailing wheel.Thus, usually use two bicycle operating devices (for example selector) for example, to operate a pair of gear modifier (dialling chain device or inner wheel hub gear mechanism) to select the transmitting ratio of expectation.The bicycle selector of this class has two types conventionally, and a kind of is poke-rod type change-speed box, and another kind is gripping type change-speed box.
Poke-rod type bicycle shift system mainly comprises that is fixed on a bicycle handle bar set collar on hand, one for rolling or discharge the spool of speed change bracing wire, a plurality of and the non-rotatable ratchet cover plate being installed together of spool, a ratchet unit that keeps tooth with positioning teeth and position, with a tensioning driving lever operating for rolling the bracing wire of (tension) speed change, by being arranged on tensioning ratchet on tensioning driving lever and the tooth on the tensioning ratchet cover plate, mesh to make spool around main shaft to speed change steel wire, to roll (tension) set direction, one for discharging the release driving lever of (unclamping) speed change bracing wire operation, be used for making user when operation discharges driving lever, drive the motion of ratchet unit simultaneously, make positioning teeth and the positioning teeth on position maintenance tooth and positioning ratchet wheel dish on ratchet unit and keep tooth to produce moment depart from and mesh, thereby make spool around main shaft to speed change steel wire, discharge (unclamping) set direction.For this class speed changing control mechanism for bicycle, at least need the plural ratchet cover plate and spool to be installed together to realize the object of shift speed change.The part requirement that so many size and dimensions will be coordinated is mutually brought quite high productive costs, cost of installation and corresponding installing space in case of transmission.For above-mentioned reasons, need a kind of bicycle shift speed change mechanism that can overcome above-mentioned technical matters.
[utility model content]
The purpose of this utility model is to be to overcome the deficiencies in the prior art, a kind of more reasonable structure is provided, can have reduced production costs and the bicycle shift gearshift of cost of installation, has dwindled its installing space and has alleviated the weight of change-speed box.
In order to solve the technical matters of above-mentioned existence, the utility model adopts following technical proposals:
A bicycle shift gearshift, it includes:
Be sleeved on bicycle handle bar set collar on hand, for described shift control apparatus is installed to bicycle, with captive nut, it be locked on handle when mounted;
By the main shaft vertically passing, be arranged on torsion spring, steel wire spool and the ratchet cover plate between upper and lower back plate, wherein spool is for being wound around and discharging speed change bracing wire, and the described ratchet cover plate and spool are together with the two is nonrotatably mounted tO; The described ratchet cover plate is provided with one section of tensioning sector on its excircle, in its excircle, be provided with half annular through-hole, in the both sides of this through hole, be respectively provided with relative to one another one section discharge sector, position keeps sector, described release sector, position keep sector and tensioning sector all to take main shaft being arranged in coaxially on the ratchet cover plate as axle center; Main shaft adopts bolt at this, and when mounted, main shaft is from top to bottom through tightening with spindle nut after upper bearing plate, torsion spring, spool and lower support plate;
By pivot, be rotatably connected on the ratchet unit on lower support plate bottom surface and discharge driving lever; Wherein said release driving lever can conter clockwise, cw motion, and it is for unclamping the speed change steel wire being wrapped on spool, and it comprises and discharges push rod portion, ellipse hole and an elongated portion; Described ratchet unit includes position and keeps ratchet, the sponson that discharges ratchet and work in coordination with the elongated portion that discharges driving lever; Described position keep ratchet and discharge ratchet from lower support plate pierces into selectively and the release sector of the ratchet cover plate, position keep sector to mesh to control the side-play amount of the ratchet cover plate between primary importance and the second place; Described pivot is through the ellipse hole of described release driving lever; The elongated portion of described release driving lever is clipped between the sponson of this ratchet unit and the bossing of lower support plate;
Stretching device, it includes tensioning driving lever, is arranged on tensioning ratchet torsion spring and tensioning ratchet on tensioning driving lever, described tensioning ratchet can with ratchet cover plate periphery on tensioning sector engagement, by ratchet disposed thereon rotationally and the tooth on the ratchet cover plate, mesh the speed change steel wire on tensioning spool like this; After passing successively from the bottom up tensioning driving lever, tensioning ratchet torsion spring and tensioning ratchet by an axle when mounted, with jump ring circle clamping, become stretching device, described tensioning driving lever is connected with lower support plate by pin.
In to the improvement project of above-mentioned bicycle shift gearshift, described position keeps ratchet, release ratchet are symmetrically distributed in the line of centers both sides of ratchet unit and are connected.
Compared with prior art, the beneficial effects of the utility model are: because it is only with a tensioning ratchet cover plate, and the tensioning sector with the engagement of tensioning ratchet and position are kept to sector and discharge sector being completely all arranged on a ratchet cover plate, number of parts and installing space under the prerequisite that does not affect change-speed box allomeric function, have been simplified like this, thereby productive costs and cost of installation have been reduced, and dwindled the installing space of change-speed box and alleviated the weight of change-speed box, therefore more reasonable structure of the present utility model.
Below in conjunction with accompanying drawing and the specific embodiment, the utility model is described in further detail:
[accompanying drawing explanation]
Fig. 1 is the schematic perspective view of the utility model embodiment;
Fig. 2 is the assembling schematic diagram of the utility model embodiment;
Fig. 3 is the ratchet cover plate and the tensioning ratchet of the utility model embodiment and discharges the meshing relation figure between ratchet;
Fig. 4 is the schematic perspective view of the ratchet unit of the utility model embodiment;
Fig. 5 is the schematic diagram of the releasing mechanism of the utility model embodiment.
[specific embodiment]
Fig. 1 shows the assembly drawing of the gear shift mechanism that is arranged on the bicycle handle right hand one side in the mode of forward sight, in order to be shown clearly in the assembly relation between each part, omitted the upper lower casing of gear shift mechanism in this figure.
Fig. 2 shows the major part of a preferred implementation of multidirectional gearshift in the mode of decomposition view.This gearshift major part comprises: set collar 1, upper bearing plate 2, main shaft 3, lower support plate 4, steel wire spool 5, discharges driving lever 6, tensioning driving lever 7, the ratchet cover plate 8, torsion spring 9, spindle nut 10, tensioning ratchet 11, pin 12, tensioning ratchet torsion spring 13, jump ring circle 14, captive nut 15, pivot 16, ratchet unit 17 etc.
Bicycle shift gearshift as shown in Fig. 1 to 5, it includes:
Be sleeved on bicycle handle bar set collar 1 on hand, with captive nut 15, be locked on handle when mounted;
By the main shaft 3 vertically passing, be arranged on torsion spring 9, steel wire spool 5 and the ratchet cover plate 8 between upper and lower back plate 2,4, the described ratchet cover plate 8 and steel wire spool 5 are together with the two is nonrotatably mounted tO; Pass through Fig. 3, in Fig. 4 and Fig. 5, can find out, the described ratchet cover plate 8 is provided with one section of tensioning sector 8c on its excircle, in its excircle, be provided with half annular through-hole, in the both sides of this through hole, be respectively provided with relative to one another one section discharge sector 8a, position keeps sector 8b, described release sector 8a, position keep sector 8b and tensioning sector 8c all to take main shaft 3 being arranged in coaxially on the ratchet cover plate 8 as axle center; Main shaft 3 adopts bolt at this, and when mounted, main shaft 3 is from top to bottom through upper bearing plate 2, torsion spring 9, steel wire spool 5 with lower support plate 4 is rear tightens with spindle nut 10.Due to the ratchet cover plate 8, the two is being assembled together of can not rotating mutually for steel wire spool 5, when promoting tensioning driving lever 7, user completes when operation of performing, the tensioning ratchet 11 being arranged on tensioning driving lever 7 meshes with the tensioning sector 8c on the ratchet cover plate 8, then promote the ratchet cover plate 8 around main shaft 3 rotations, because the ratchet cover plate 8, steel wire spool 5 are to be mounted to a global facility that can not rotate mutually, therefore when the ratchet cover plate 8 rotation, also drive accordingly spool around main shaft, to rotate thereupon, thereby the speed change steel wire on spool 5 is tightened up, reach the function of speed change.Because the stretching device in gear shift mechanism is publicly-owned technology, be apparent for a person skilled in the art, do not do too much description herein.
By pivot 16, be rotatably connected on the ratchet unit 17 on lower support plate 4 bottom surfaces and discharge driving lever 6, as seen from Figure 5, wherein said release driving lever 6 comprises the release 6c of push rod portion, ellipse hole 6a and an elongated portion 6b, wherein the sponson 17c of ratchet unit 17 keeps in touch with the elongated portion 6b that discharges driving lever 6; The ratchet unit 17 being used in combination with the ratchet cover plate 8 as shown in Figure 4, includes position and keeps ratchet 17a, the sponson 17c that discharges ratchet 17b and work in coordination with the elongated portion 6b that discharges driving lever 6; Described position keep ratchet 17a and discharge ratchet 17b from lower support plate 4 pierces into selectively and the release sector 8a of the ratchet cover plate 8, position keep sector 8b to mesh to control the side-play amount of the ratchet cover plate 8 between primary importance and the second place, ratchet unit 17 is under the effect of torsion spring 9, and position wherein keeps the position on ratchet 17a and the ratchet cover plate 8 to keep sector 8b to keep engagement.When promoting tensioning driving lever 7, user realizes shift speed change, alleged performing during speed change namely, the tensioning ratchet 11 being arranged on tensioning driving lever 7 meshes and promotes the ratchet cover plate 8 around main shaft 3 rotations with the tensioning sector 8c on the ratchet cover plate 8, at this moment the position of ratchet unit 17 keep ratchet 17a can with the ratchet cover plate 8 on position keep a tooth in sector 8b mesh and stop the ratchet cover plate 8 to turn round under torsion spring 9 elastic force effects, make the ratchet cover plate 8 be fixed on position correspondingly, reach the gear that operator needs.Described pivot 16 is through the ellipse hole 6a of described release driving lever 6; The elongated portion 6b of described release driving lever 6 is clipped between the sponson 17c of this ratchet unit 17 and the bossing 4a of lower support plate 4;
Stretching device, as shown in Figure 5, it includes tensioning driving lever 7, is arranged on tensioning ratchet torsion spring 13 and tensioning ratchet 11 on tensioning driving lever 7, described tensioning ratchet 11 can with the ratchet cover plate 8 peripheries on tensioning sector 8c engagement; By an axle, become stretching device successively from the bottom up through tensioning driving lever 7, tensioning ratchet torsion spring 13 and tensioning ratchet 11 are rear with jump ring circle 14 clampings when mounted, described tensioning driving lever 7 is connected with lower support plate 4 by pin 12.
For completing the multidirectional releasing operation of gear shift mechanism, below by Fig. 3 and Fig. 5, be described in detail.In Fig. 5, when operator promotes to discharge driving lever 6
conter clockwise (, to the first direction F shown in arrow, the locality being arranged on handle with gearshift is defined as conter clockwise)during motion, discharging a side part of ellipse hole 6a on driving lever 6 rotates around pivot 16, discharge the sponson 17c that is in contact with it on elongated portion 6b on driving lever 6 compressing ratchet unit 17 to a lateral movement simultaneously, thereby drive ratchet unit 17 also around pivot 16 synchronously to a lateral movement, at this moment 17Shang position in ratchet unit keeps the position on ratchet 17a and the ratchet cover plate 8 to keep sector 8b under the effect of power, to depart from engagement, the release ratchet 17b that meanwhile another on ratchet unit 17 is relative enters the mesh regional of the release sector 8a on the ratchet cover plate 8 and along with the engagement that is moved into of ratchet unit 17.Because keeping the layout of sector 8b and release sector 8a, the position on the ratchet cover plate 8 staggers toward each other, when position keeps ratchet 17a and position to keep sector 8b to depart from engagement, discharging ratchet 17b enters and discharges the mesh regional of sector 8a and when discharging sector 8a and mesh, position keeps the cusp of ratchet 17a just to leave and jumps over the vertex of position maintenance sector 8b, when operator unclamps the power being applied on release driving lever 6, under the effect of torsion spring power, discharge driving lever 6 and can get back to normal position, the power that imposes on sponson 17c on ratchet unit 17 by the elongated portion 6b on release driving lever 6 also disappears thereupon, under the effect of torsion spring 9, release ratchet 17b on ratchet unit 17 and the release sector 8a on the ratchet cover plate 8 throw off engagement, and position keeps ratchet 17a owing to jumping over and leaving the vertex that last position keeps sector 8b, under torsion spring 9 effects, on position maintenance ratchet 17a and the ratchet cover plate 8, next position maintenance sector 8b enters and meshes and keep the ratchet cover plate 8 in corresponding position, the shelves that move back that complete first direction operate.
In Fig. 5, when using operator
cw (pressing shown in arrow to the second direction R contrary with first direction F)pull while discharging driving lever 6, the elongated portion 6b discharging on driving lever 6 first contacts with the bossing 4a on lower support base plate 4, stop and discharge driving lever 6 around the further rotation of pivot 16, at this moment under the effect of operator's pulling force, the path of motion that discharges driving lever 6 becomes along ellipse hole 6a slides around pivot 16, when discharging driving lever 6 and slide in ellipse hole 6a the opposite side place compared with slotted hole, discharge driving lever 6 itself also accordingly to a side shifting distance, discharge the sponson 17c that is in contact with it on elongated portion 6b on driving lever 6 compressing ratchet unit 17 to a lateral movement simultaneously, thereby drive ratchet unit 17 also around pivot 16 synchronously to a lateral movement, at this moment 17Shang position in ratchet unit keeps the position on ratchet 17a and the ratchet cover plate 8 to keep sector 8b under the effect of power, to depart from engagement, the release ratchet 17b that meanwhile another on ratchet unit 17 is relative enters the mesh regional of the release sector 8a on the ratchet cover plate 8 and along with the engagement that is moved into of ratchet unit 17.Because keeping the layout of sector 8b and release sector 8a, the position on the ratchet cover plate 8 staggers toward each other, when position keeps ratchet 17a and position to keep sector 8b to depart from engagement, discharging ratchet 17b enters and discharges the mesh regional of sector 8a and when discharging sector 8a and mesh, position keeps the cusp of ratchet 17a just to leave and jumps over the vertex of position maintenance sector 8b, when operator unclamps the power being applied on release driving lever 6, under the effect of torsion spring power, discharge driving lever 6 and can get back to normal position, the power that imposes on sponson 17c on ratchet unit 17 by the elongated portion 6b on release driving lever 6 also disappears thereupon, under the effect of torsion spring 9, release ratchet 17b on ratchet unit 17 and the release sector 8a on the ratchet cover plate 8 throw off engagement, and position keeps ratchet 17a owing to jumping over and leaving the vertex that last position keeps sector 8b, under torsion spring 9 effects, the next tooth of position maintenance sector 8b on position maintenance ratchet 17a and the ratchet cover plate 8 enters and meshes and keep the ratchet cover plate 8 in corresponding position, the shelves that move back that complete second direction operate.
As can be seen from above, the utility model has been saved the tensioning ratchet cover plate 8 and has only been used one, and the tensioning sector 8c with 11 engagements of tensioning ratchet and position are kept to sector 8b and discharge sector 8a being completely arranged on a ratchet cover plate 8, number of parts and installing space under the prerequisite that does not affect change-speed box allomeric function, have been simplified like this, thereby productive costs and cost of installation have been reduced, and dwindled the installing space of change-speed box and alleviated the weight of change-speed box, therefore more reasonable structure of the present utility model.
In the present embodiment, as shown in Figure 4, described position keeps ratchet 17a, release ratchet 17b are symmetrically distributed in the line of centers both sides of ratchet unit 17 and are connected.
Although reference above embodiment describes the utility model in detail, but it will be apparent to one skilled in the art that by the disclosure, and in the situation that do not depart from principle of the present utility model and the spiritual scope that described claim limits, can the utility model be made a variety of changes or be revised.Therefore, the detailed description of disclosure embodiment is only used for explaining, rather than is used for limiting the utility model, but is defined by the subject-matter of the claims the scope of protection.
Claims (2)
1. a bicycle shift gearshift, is characterized in that, includes:
Be sleeved on bicycle handle bar set collar on hand;
By the main shaft vertically passing, be arranged on torsion spring, steel wire spool and the ratchet cover plate between upper and lower back plate, the described ratchet cover plate and steel wire spool are together with the two is nonrotatably mounted tO; The described ratchet cover plate is provided with one section of tensioning sector on its excircle, in its excircle, be provided with half annular through-hole, in the both sides of this through hole, be respectively provided with relative to one another one section discharge sector, position keeps sector, described release sector, position keep sector and tensioning sector all to take main shaft being arranged in coaxially on the ratchet cover plate as axle center;
By pivot, be rotatably connected on the ratchet unit on lower support plate bottom surface and discharged driving lever, wherein said release driving lever comprises release push rod portion, ellipse hole and an elongated portion; Described ratchet unit includes position and keeps ratchet, the sponson that discharges ratchet and work in coordination with the elongated portion that discharges driving lever; Described position keeps ratchet and discharges ratchet selectively keeping sector engagement with release sector, the position of the ratchet cover plate from lower support plate pierces into; Described pivot is through the ellipse hole of described release driving lever; The elongated portion of described release driving lever is clipped between the sponson of this ratchet unit and the bossing of lower support plate;
Stretching device, it includes tensioning driving lever, is arranged on tensioning ratchet torsion spring and tensioning ratchet on tensioning driving lever, described tensioning ratchet can with ratchet cover plate periphery on tensioning sector engagement.
2. bicycle shift gearshift according to claim 1, is characterized in that, described position keeps ratchet, release ratchet are symmetrically distributed in the line of centers both sides of ratchet unit and are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320629012.1U CN203497125U (en) | 2013-10-12 | 2013-10-12 | Bicycle speed-changing gearshift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320629012.1U CN203497125U (en) | 2013-10-12 | 2013-10-12 | Bicycle speed-changing gearshift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203497125U true CN203497125U (en) | 2014-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320629012.1U Expired - Lifetime CN203497125U (en) | 2013-10-12 | 2013-10-12 | Bicycle speed-changing gearshift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203497125U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921891A (en) * | 2014-04-23 | 2014-07-16 | 张娜 | Bicycle shifter |
| CN107010168A (en) * | 2017-04-17 | 2017-08-04 | 珠海蓝图控制器科技有限公司 | A kind of bicycle selector |
| TWI690454B (en) * | 2019-03-15 | 2020-04-11 | 台灣微轉股份有限公司 | Bicycle operating device |
| CN111717330A (en) * | 2019-03-21 | 2020-09-29 | 台湾微转股份有限公司 | Bicycle operating device |
| CN115258031A (en) * | 2022-06-10 | 2022-11-01 | 佛山市博力为智能科技有限公司 | Speed-changing operating device for bicycle |
-
2013
- 2013-10-12 CN CN201320629012.1U patent/CN203497125U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103921891A (en) * | 2014-04-23 | 2014-07-16 | 张娜 | Bicycle shifter |
| CN103921891B (en) * | 2014-04-23 | 2017-06-30 | 珠海蓝图控制器科技有限公司 | A kind of bicycle selector |
| CN107010168A (en) * | 2017-04-17 | 2017-08-04 | 珠海蓝图控制器科技有限公司 | A kind of bicycle selector |
| TWI690454B (en) * | 2019-03-15 | 2020-04-11 | 台灣微轉股份有限公司 | Bicycle operating device |
| CN111717330A (en) * | 2019-03-21 | 2020-09-29 | 台湾微转股份有限公司 | Bicycle operating device |
| CN111717330B (en) * | 2019-03-21 | 2022-01-04 | 台湾微转股份有限公司 | Bicycle operating device |
| CN115258031A (en) * | 2022-06-10 | 2022-11-01 | 佛山市博力为智能科技有限公司 | Speed-changing operating device for bicycle |
| CN115258031B (en) * | 2022-06-10 | 2023-09-05 | 佛山市博力为智能科技有限公司 | Speed-changing operating device for bicycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171219 Address after: 528308 Guangdong Province, Foshan city Shunde District Lunjiao Street Chung Hei village Yucheng Road West B building 4 floor two Patentee after: GUANGDONG SHUNDE SHUNTAI BICYCLE PARTS CO., LTD. Address before: 528000 Guangdong province Foshan city Shunde District Lunjiao street family name in the four seat 403 Euro Patentee before: Qian Haize |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 528308 2nd Floor, Block B, West of Yucheng North Road, Xiyong Village Committee, Lunjiao Street, Shunde District, Foshan City, Guangdong Province Patentee after: Guangdong Shunde Shuntai Intelligent Sports Equipment Co., Ltd. Address before: 528308 2nd Floor, Block B, West of Yucheng North Road, Xiyong Village Committee, Lunjiao Street, Shunde District, Foshan City, Guangdong Province Patentee before: GUANGDONG SHUNDE SHUNTAI BICYCLE PARTS CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |