Center wheel fixed single-wheeled direct drive multi-speed full-automatic transmission

A center wheel, fully automatic technology, used in one-way clutches, vehicle gearboxes, gear transmissions, etc., can solve problems such as inability to achieve automatic shifting, difficult to maintain transmission, and achieve compact structure, reduced requirements, and easy riding. Effect

Pending Publication Date: 2017-05-31
ZHANGJIAGANG CHUANJUN VEHICLE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The internal derailleurs in the current technology generally have the following defects: 1. Manual gear shifting is required, and automatic gear shifting cannot be r

Method used

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  • Center wheel fixed single-wheeled direct drive multi-speed full-automatic transmission
  • Center wheel fixed single-wheeled direct drive multi-speed full-automatic transmission
  • Center wheel fixed single-wheeled direct drive multi-speed full-automatic transmission

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] Participate Figure 1 to Figure 4 As shown, a single-wheel direct-drive multi-speed automatic transmission with a fixed center wheel includes: a center shaft 1, a hub 2 and a speed change mechanism arranged between the center shaft 1 and the hub 2. The center shaft 1 is a power input member , The hub 2 is a power output, and the transmission mechanism includes at least two sets of planetary transmissions and at least one set of automatic centrifugal shifting mechanism. In this embodiment, the transmission mechanism realizes four-speed transmission in total, so the transmission mechanism includes three One set of planetary transmission 3 and three sets of automatic centrifugal shift mechanism 4, of course, in other embodiments, the number of planetary transmission and automatic centrifugal shift mechanism can be determined according to specific requirements.

[0028] The planetary transmission 3 includes: a first planetary transmission 30, a second planeta...

Example Embodiment

[0033] Example 2

[0034] Participate Figure 5 As shown, the center wheel fixed single-wheel direct-drive multi-speed automatic transmission in this embodiment is compared with the center-wheel fixed single-wheel direct-drive multi-speed automatic transmission in Example 1. The rest of the structure is the same, the difference is : In the first embodiment, three sets of automatic centrifugal shifting mechanisms are included. The overrunning clutch is arranged between the hub 2 and the first planet carrier 300. In this embodiment, a total of two sets of automatic centrifugal shifting mechanisms are included. , The overrunning clutch is arranged between the first assembly and the hub 2, that is, compared with the first embodiment, the second embodiment removes the first automatic centrifugal shift mechanism 40, and is originally installed on the first planet carrier 300 and The overrunning clutch 5 between the hubs 2 is placed at the position where the first automatic centrifugal ...

Example Embodiment

[0036] Example 3

[0037] Participate Image 6 As shown, the center wheel fixed single-wheel direct-drive multi-speed automatic transmission in this embodiment is compared with the center-wheel fixed single-wheel direct-drive multi-speed automatic transmission in Example 2. The rest of the structure is the same, the difference is : In the second embodiment, there are two sets of automatic centrifugal shifting mechanisms and three sets of planetary transmissions, while in this embodiment, a total of one set of automatic centrifugal shifting mechanisms and two sets of planetary transmissions are included, that is, compared to the embodiment 2. The single-wheel direct-drive multi-speed automatic transmission in this embodiment removes the second planetary transmission 31 and the second automatic centrifugal shift mechanism 41 in the second embodiment.

[0038] The working principle of the single-wheel direct-drive multi-speed automatic transmission with a fixed center wheel in this em...

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PUM

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Abstract

The invention discloses a center wheel fixed single-wheeled direct drive multi-speed full-automatic transmission which comprises a center shaft, a wheel hub and a speed change mechanism, wherein the speed change mechanism comprises at least two sets of planetary transmissions and at least one set of automatic centrifugal gear-shifting mechanism; each set of planetary transmissions comprises a planet carrier, a planet wheel, a gear ring and a center wheel; in every two adjacent sets of planetary transmissions, the gear ring of one set of planetary transmissions and the planet carrier of the other set of planetary transmissions form an assembling unit; the planet carrier of an initial set of planetary transmissions and the center shaft are fixedly connected or integrally molded with each other; each set of automatic centrifugal gear-shifting mechanism comprises a pawl piece rack, a ratchet wheel and at least one pawl piece; the pawl piece rack is arranged in the wheel hub; the ratchet wheel is arranged on the assembling unit or the gear ring; and an overrun clutch is arranged between the planet carrier and the wheel hub, or the overrun clutch is arranged between the assembling unit and the wheel hub. According to the transmission disclosed by the invention, the requirement on stepping frequency can be reduced at a medium/high gear.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of bicycles, in particular to a center wheel fixed single wheel direct drive multi-speed fully automatic transmission. [0003] 【Background technique】 [0004] Bicycle transmissions are divided into two types: internal transmissions and external transmissions. The external transmission uses an open chain mechanism as the transmission system. The chain is shifted to different flywheels to achieve different chain transmission ratios by switching the shifter installed in front of the bicycle. Since the external derailleur is exposed, it is relatively easy to rust and is easily disturbed by external forces, so regular maintenance is often required. The internal derailleur mainly uses a planetary gear mechanism as the main transmission body, which is sealed inside the hub and passed through multiple layers of special sealing materials. Protection, so rainwater, dust, grease, etc. cannot enter, so there is...

Claims

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Application Information

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IPC IPC(8): F16H3/66F16H57/023F16D41/12
CPCF16D41/12F16H3/66F16H57/023F16H2200/201F16H2200/2038Y02T10/86
Inventor 黄英可
Owner ZHANGJIAGANG CHUANJUN VEHICLE IND CO LTD
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