CN216430330U - Centrifugal driving assembly - Google Patents
Centrifugal driving assembly Download PDFInfo
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- CN216430330U CN216430330U CN202120816486.1U CN202120816486U CN216430330U CN 216430330 U CN216430330 U CN 216430330U CN 202120816486 U CN202120816486 U CN 202120816486U CN 216430330 U CN216430330 U CN 216430330U
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- clutch
- centrifugal
- driving
- limiting plate
- centrifugal block
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Abstract
The utility model discloses a centrifugal driving assembly, and relates to the field of speed change mechanisms. The technical scheme is that the centrifugal clutch comprises a power input part, a power output part and a clutch assembly, wherein the clutch assembly comprises a clutch inner ring, a clutch outer ring, a clutch driving part, a clutch elastic part, a centrifugal block and a limiting plate, the centrifugal block can rotate from a contraction state to a throwing-away state according to the rotating speed of the power output part, the limiting plate is provided with a release groove matched with the clutch driving part, and the centrifugal block can drive the limiting plate to rotate; when the centrifugal block is in a contraction state, the clutched inner ring and the clutched outer ring cannot be driven by the clutching driving piece under the limiting action of the limiting plate; when the centrifugal block is in a throwing state, the clutch driving piece is embedded into the release groove, and the clutch inner ring and the clutch outer ring can be driven through the clutch driving piece. The utility model realizes the state switching according to the output speed, and can reduce the gear shifting frequency, prolong the service life and improve the riding experience when being applied to the speed change mechanism.
Description
Technical Field
The present invention relates to the field of speed change mechanisms, and more particularly, it relates to a centrifugal drive assembly.
Background
A typical internal speed change mechanism utilizes centrifugal force to realize automatic speed change, and when a certain step frequency speed is reached, the centrifugal block is thrown away to realize automatic upshift, and when the step frequency speed is reduced below a speed change point, the centrifugal block is contracted to realize automatic downshift, as shown in chinese patent No. CN 208882034U.
However, with a vehicle employing the above-described transmission mechanism, if the rider does not want to step on the vehicle at a high speed (greater than the shift point) or does not need to step on the vehicle on a downhill, the transmission mechanism is automatically downshifted due to a reduction in the rider's stepping speed; when the vehicle is still kept at a high speed (greater than the speed change point) after the vehicle slides for a certain distance, the rider needs to make the pedaling speed reach the speed change point within a short time after pedaling again so as to automatically upshift the speed change mechanism. In this case, the automatic downshift of the speed change mechanism can affect the riding experience, and the increase of the gear shifting frequency easily causes the fault of the speed change mechanism and affects the service life of the speed change mechanism.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a centrifugal driving assembly, which can realize state switching according to output speed, can reduce gear shifting frequency, prolong the service life and improve riding experience when applied to a speed change mechanism.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a centrifugal drive assembly, includes power input spare, power output spare and sets up the clutch assembly between the two, clutch assembly includes separation and reunion inner circle, separation and reunion outer lane, separation and reunion driving piece and separation and reunion elastic component, still includes:
the centrifugal block is connected with the power output piece and can rotate from a contraction state to a throwing state according to the rotating speed of the power output piece; and the number of the first and second groups,
the limiting plate is connected with the centrifugal block, a release groove matched with the clutch driving piece is formed in the limiting plate, and the centrifugal block can drive the limiting plate to rotate;
when the centrifugal block is in a contraction state, the clutch inner ring and the clutch outer ring cannot be driven by the clutch driving piece under the limiting action of the limiting plate;
when the centrifugal block is in a throwing state, the clutch driving piece is embedded into the release groove, and the clutch inner ring and the clutch outer ring can be driven through the clutch driving piece.
Further, the centrifugal mass is located radially outside the clutch assembly.
Further, the centrifugal block number is at least two, and the centrifugal driving assembly further comprises an elastic resetting piece connected with only one centrifugal block.
Furthermore, be provided with on the centrifugation piece and be used for the drive limiting plate pivoted swing arm, be provided with the actuating lever on the swing arm, set up on the limiting plate with actuating lever complex drive hole.
Furthermore, a driving pin is arranged on the centrifugal block, an extension arm is arranged on the limiting plate, and a driving hole matched with the driving pin is formed in the extension arm.
Furthermore, a limiting groove matched with the clutch driving piece is formed in the limiting plate.
Furthermore, a positioning plate connected with the clutch inner ring is arranged on the power output part, a shaft rod penetrates through the centrifugal block, and two ends of the shaft rod are respectively connected with the power output part and the positioning plate.
Further, the power input part comprises a first power input part and a second power input part, and the clutch outer ring comprises a first clutch outer ring connected with the first power input part and a second clutch outer ring matched with the second power input part.
Furthermore, a fixing plate connected with the power output part is arranged on the clutch inner ring, a shaft rod penetrates through the centrifugal block, and the shaft rod is connected with the fixing plate.
Furthermore, the centrifugal block and the limiting plate are respectively located on two sides of the fixing plate.
In conclusion, the utility model has the following beneficial effects:
1. the centrifugal block realizes state switching according to the rotating speed of the power output part, and is applied to the speed change mechanism, so that the gear shift frequency can be reduced, the service life is prolonged, and the riding experience is improved;
2. a plurality of centrifugal pieces only adopt an elasticity piece that resets, can guarantee the smooth of limiting plate and reset.
Drawings
FIG. 1 is a first schematic structural view of a centrifugal drive assembly according to embodiment 1;
FIG. 2 is a second schematic structural view of a centrifugal driving assembly according to embodiment 1;
FIG. 3 is a first schematic structural view of a centrifugal drive assembly according to embodiment 2;
FIG. 4 is a second schematic structural view of a centrifugal driving assembly according to embodiment 2;
FIG. 5 is a first schematic structural view of a centrifugal drive assembly according to embodiment 3;
FIG. 6 is a second schematic structural view of a centrifugal driving assembly according to embodiment 3;
fig. 7 is a schematic structural diagram of a centrifugal drive assembly according to embodiment 3.
In the figure: 1. a power input; 1a, a first power input piece; 1b, a second power input member; 2. a power take-off; 21. a ring plate; 22. positioning a plate; 31. the inner ring is clutched; 311. a fixing plate; 312. positioning a groove; 32. a clutch drive; 33. an outer clutch ring; 33a, a first clutch outer ring; 33b, a second clutch outer ring; 41. a centrifugal block; 411. a shaft lever; 412. a pin; 413. a drive pin; 42. a limiting plate; 421. a relief groove; 422. a drive aperture; 423. a limiting groove; 424. an extension arm; 43. swinging arms; 431. a drive rod; 44. an elastic reset member; 5. a limiting frame.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Example 1:
a centrifugal driving assembly, referring to fig. 1 and fig. 2, comprises a power input member 1, a power output member 2, and a clutch assembly arranged between the power input member and the power output member, wherein the clutch assembly comprises a clutch inner ring 31, a clutch outer ring 33, a clutch driving member 32, a clutch elastic member, a centrifugal block 41 and a limiting plate 42; wherein, the centrifugal block 41 is provided with a shaft rod 411 connected with the power output part 2 in a penetrating way, the centrifugal block 41 can rotate around the shaft rod 411, and the centrifugal block 41 can rotate from a contraction state to a throwing state according to the rotating speed of the power output part 2; the limiting plate 42 is connected with the centrifugal block 41, the centrifugal block 41 can drive the limiting plate 42 to rotate, and the limiting plate 42 is provided with a release groove 421 matched with the clutch driving member 32.
Referring to fig. 1 and 2, when the centrifugal block 41 is in a contracted state, under the limiting action of the limiting plate 42, the clutch inner ring 31 and the clutch outer ring 33 cannot be transmitted through the clutch driving member 32, and the rotation speed of the power input member 1 cannot be transmitted to the power output member 2 through the clutch assembly; when the centrifugal block 41 is in a throw-away state, the clutch driving member 32 is inserted into the release groove 421, the clutch inner ring 31 and the clutch outer ring 33 can be driven by the clutch driving member 32, and the rotation speed of the power input member 1 can be transmitted to the power output member 2 through the clutch assembly.
Referring to fig. 1 and fig. 2, the clutch assembly in this embodiment is a ratchet-pawl structure, and in other alternative embodiments, the clutch assembly may also adopt a clutch structure such as a one-way bearing, which is not limited herein; specifically, the clutch inner 31 is a pawl seat, the clutch driving member 32 is a pawl, the clutch outer 33 is a ratchet wheel, and the clutch elastic member is a spring ring; under the elastic force action of the spring ring, the meshing end of the pawl can be lifted to be meshed with the ratchet wheel, and the ratchet wheel can drive the pawl seat to rotate through the pawl; the limiting plate 42 limits the clutch assembly, that is, the limiting plate 42 presses the engaging end of the pawl to make it unable to engage with the ratchet wheel, when the limiting plate 42 rotates to make the releasing groove 421 face the pawl, the engaging end of the pawl lifts up to be embedded into the releasing groove 421 and engages with the ratchet wheel.
Referring to fig. 1 and 2, in the present embodiment, the clutch inner 31 is connected to the power output member 2, and the clutch outer 33 is connected to the power input member 1; specifically, the power output part 2 is provided with a ring plate 21, the end part of the ring plate 21 is fixedly provided with a positioning plate 22, and the positioning plate 22 is fixedly connected with the clutch inner ring 31; in this embodiment, the ring plate 21 is located at the outer side of the centrifugal block 41 along the radial direction, and can play a role in radially limiting the centrifugal block 41, that is, the centrifugal block 41 cannot rotate continuously after contacting the inner side wall of the ring plate 21, and is kept in a swing-away state.
Referring to fig. 1 and 2, the clutch outer ring 33 and the power input member 1 are linked in a circumferential direction, specifically, in this embodiment, a plurality of first protrusions (not shown in the drawings) are uniformly distributed on an outer side wall of the clutch outer ring 33 in the circumferential direction, a plurality of second protrusions (not shown in the drawings) are uniformly distributed on an inner side wall of the power input member 1 in the circumferential direction, the first protrusions and the second protrusions are in contact to realize circumferential linkage of the power input member 1 and the clutch outer ring 33, and buffering can be performed when states are switched by matching the first protrusions and the second protrusions; in other alternative embodiments, the power input member 1 and the clutch outer 33 may also be fixedly connected, or may be connected by a key way fit, which is not limited herein.
Referring to fig. 1 and 2, in the present embodiment, the centrifugal mass 41 is located radially outside the clutch assembly, thereby facilitating control of the axial dimension; specifically, two ends of the shaft rod 411 in this embodiment are respectively connected with the power output member and the positioning plate 22; in the embodiment, the number of the centrifugal blocks 41 is two, and the centrifugal driving assembly further includes an elastic reset piece 44 connected to only one centrifugal block 41; the elastic restoring member 44 in this embodiment is a torsion spring, and the elastic force of the torsion spring makes the centrifugal block 41 have a tendency of restoring to the contracted state; specifically, the torsion spring is sleeved on the shaft lever 411, one end of the torsion spring is connected with the centrifugal block 41, and the other end of the torsion spring is connected with the positioning plate 22; in this embodiment, only one elastic reset member is used, so that the limit plate 42 can be reset smoothly.
Referring to fig. 1 and fig. 2, in the present embodiment, a swing arm 43 for driving a limiting plate 42 to rotate is disposed on a centrifugal block 41, specifically, a driving rod 431 is disposed on the swing arm 43, and a driving hole 422 matched with the driving rod 431 is disposed on the limiting plate 42; in this embodiment, a pin 412 is inserted between the centrifugal block 41 and the swing arm 43, and the centrifugal block 41 and the swing arm 43 are fixedly connected through the pin 412, so that the centrifugal block 41 can drive the swing arm 43 to rotate synchronously.
The working principle is as follows:
the power input part 1 and the power output part 2 rotate, and the rotating speed of the power input part 1 is greater than that of the power output part 2 in an initial state; at this time, the rotation speed of the power output member 2 does not reach the set value, and the centrifugal block 41 is in a contraction state, so that the clutch assembly cannot transmit.
When the rotating speed of the power output part 2 reaches a set value, the centrifugal block 41 is switched from the contraction state to the throwing state, and then the rotating speed of the power input part 1 can be transmitted to the power output part 2 through the clutch assembly.
When the power output part 2 is kept in a high-speed state (larger than a set value) and the rotating speed of the power input part 1 is reduced, the clutch assembly is in an overrunning state, and the centrifugal block 41 is always kept in a throwing-away state; when the power input member 1 increases the rotation speed again, the clutch assembly can be directly switched from the overrunning state to the engaging state to input the rotation speed without undergoing the state switching of the centrifugal mass 41, so that the service life can be prolonged.
Example 2:
a centrifugal drive assembly, referring to fig. 3 and 4, based on embodiment 1, the present embodiment is different from embodiment 1 in that: in the embodiment, the power output part 2 is directly and fixedly connected with the clutch inner ring 31, and the limit plate 42 is provided with a limit groove 423 matched with the clutch driving part 32; when the clutch assembly is in a limited state, the end part of the clutch driving piece 32 is embedded in the limit groove 423 and cannot be meshed with the clutch outer ring 33; the eccentric block 41 rotates around the shaft 411 to drive the limiting plate 42 to rotate, so that the clutch assembly is switched to a release state, and the end of the clutch driving member 32 is inserted into the release groove 421 and engaged with the clutch outer 33.
Example 3:
a centrifugal driving assembly, referring to fig. 5 to 7, based on embodiment 1, the present embodiment is different from embodiment 1 in that: in the embodiment, the power input member includes a first power input member 1a and a second power input member 1b, and the clutch outer ring includes a first clutch outer ring 33a connected with the first power input member 1a and a second clutch outer ring 33b matched with the second power input member 1b, that is, the embodiment includes two input paths.
Referring to fig. 5 to 7, in the present embodiment, the clutch inner 31 is provided with a fixing plate 311 connected to the power output member 2, and the shaft 411 is connected to the fixing plate 311; specifically, in the present embodiment, the first clutch outer 33a and the second clutch outer 33b are respectively located on two sides of the fixing plate 311, the fixing plate 311 is fixedly connected with the power output member 2 through screws, and the fixing plate 311 and the clutch inner 31 are integrally formed.
Referring to fig. 5 to 7, in the present embodiment, the centrifugal block 41 is provided with a driving pin 413, the limiting plate 42 is provided with an extension arm 424, and the extension arm 424 is provided with a driving hole 422 engaged with the driving pin 413; meanwhile, in the present embodiment, the centrifugal block 41 and the limiting plate 42 are respectively located at two sides of the fixing plate 311, so that the structure can be simplified; in this embodiment, the fixing plate 311 is provided with a limiting frame 5 for radially limiting the centrifugal block 41, and the fixing plate 311 is provided with a positioning groove 312 matched with the centrifugal block 41; when the centrifugal block 41 is in a contracted state, it is embedded in the positioning groove 312; in this embodiment, the elastic reset piece 44 is disposed on the fixing plate 311, and one end of the elastic reset piece is connected to the centrifugal block 41 for promoting the reset of the centrifugal block 41.
Claims (10)
1. The utility model provides a centrifugal drive assembly, includes power input spare, power output spare and sets up the clutch assembly between the two, clutch assembly includes separation and reunion inner circle, separation and reunion outer lane, separation and reunion driving piece and separation and reunion elastic component, its characterized in that still includes:
the centrifugal block is connected with the power output piece and can rotate from a contraction state to a throwing state according to the rotating speed of the power output piece; and the number of the first and second groups,
the limiting plate is connected with the centrifugal block, a release groove matched with the clutch driving piece is formed in the limiting plate, and the centrifugal block can drive the limiting plate to rotate;
when the centrifugal block is in a contraction state, the clutch inner ring and the clutch outer ring cannot be driven by the clutch driving piece under the limiting action of the limiting plate;
when the centrifugal block is in a throwing state, the clutch driving piece is embedded into the release groove, and the clutch inner ring and the clutch outer ring can be driven through the clutch driving piece.
2. The centrifugal drive assembly of claim 1, wherein: the centrifugal block is located on the outer side of the clutch assembly in the radial direction.
3. The centrifugal drive assembly of claim 1, wherein: the centrifugal driving assembly comprises at least two centrifugal blocks, and further comprises an elastic resetting piece connected with only one centrifugal block.
4. The centrifugal drive assembly of claim 1, wherein: the centrifugal block is provided with a swing arm used for driving the limiting plate to rotate, the swing arm is provided with a driving rod, and the limiting plate is provided with a driving hole matched with the driving rod.
5. The centrifugal drive assembly of claim 1, wherein: the centrifugal block is provided with a driving pin, the limiting plate is provided with an extension arm, and the extension arm is provided with a driving hole matched with the driving pin.
6. The centrifugal drive assembly of claim 1, wherein: and the limiting plate is provided with a limiting groove matched with the clutch driving piece.
7. The centrifugal drive assembly of claim 1, wherein: the power output part is provided with a positioning plate connected with the clutch inner ring, the centrifugal block is provided with a shaft rod in a penetrating mode, and two ends of the shaft rod are respectively connected with the power output part and the positioning plate.
8. The centrifugal drive assembly of claim 1, wherein: the power input part comprises a first power input part and a second power input part, and the clutch outer ring comprises a first clutch outer ring connected with the first power input part and a second clutch outer ring matched with the second power input part.
9. The centrifugal drive assembly of claim 8, wherein: the clutch inner ring is provided with a fixing plate connected with the power output part, the centrifugal block is provided with a shaft rod in a penetrating mode, and the shaft rod is connected with the fixing plate.
10. The centrifugal drive assembly of claim 9, wherein: the centrifugal block and the limiting plate are respectively positioned on two sides of the fixing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120816486.1U CN216430330U (en) | 2021-04-20 | 2021-04-20 | Centrifugal driving assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120816486.1U CN216430330U (en) | 2021-04-20 | 2021-04-20 | Centrifugal driving assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216430330U true CN216430330U (en) | 2022-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120816486.1U Active CN216430330U (en) | 2021-04-20 | 2021-04-20 | Centrifugal driving assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216430330U (en) |
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2021
- 2021-04-20 CN CN202120816486.1U patent/CN216430330U/en active Active
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