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a centrifugal mechanism

A centrifugal mechanism and pawl technology, which is applied in vehicle parts, vehicle gearboxes, transportation and packaging, etc., can solve problems such as poor stability and complex structure, and achieve the effect of high stability, good stability and improved centrifugal force

Active Publication Date: 2021-12-28
ZHANGJIAGANG CHUANJUN VEHICLE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Internal derailleurs are divided into manual internal derailleurs and fully automatic internal derailleurs. Existing fully automatic internal derailleurs for bicycles generally control the switching status of the pawls through the centrifugal work of several centrifugal blocks. The structure is complex and the stability is poor.

Method used

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  • a centrifugal mechanism
  • a centrifugal mechanism
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Examples

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Effect test

Embodiment 1

[0030] ginseng Figure 1 to Figure 3 As shown, the present invention discloses a centrifugal mechanism for automatic gear shifting, which is mainly composed of a ratchet wheel 1, a pawl fixing frame 2, three pawl parts 3 and three linkage parts 4, among which the three ratchet The pawl piece 3 and the three linkage pieces 4 are arranged between the ratchet wheel 1 and the pawl fixing frame 2 and are arranged at intervals in the circumferential direction, that is, a linkage piece 4 is arranged between every two adjacent pawl pieces 3 .

[0031] The ratchet 1 is located on the outside of the ratchet holder 2 , and ratchets 10 are arranged on the inner peripheral surface of the ratchet 1 .

[0032] The pawl fixing frame 2 includes an annular base 20 and several mounting seats 21 extending outward from the outer wall of the annular base 20. The mounting seats 21 are provided with pin holes 210 for mounting pins. The mounting seat 21 is provided with a torsion spring 22 for contro...

Embodiment 2

[0038] ginseng Figure 4 As shown, the rest of the structure of the centrifugal mechanism in this embodiment is the same as that of Embodiment 1, except that in Embodiment 1, the third end 40 of the linkage member 4 is limited to the pawl member 3 along the radial direction. Inside the second end portion 31, the fourth end portion 41 of the linkage member 4 is limited to the inner side of the first end portion 30 of the pawl member 3 along the radial direction, and in this embodiment, the pawl along the radial direction The second end 31 of the component 3 is limited inside the third end 40 of the linkage component 4 , and the first end 30 of the pawl component 3 is limited inside the fourth end 41 of the linkage component 4 along the radial direction. In this embodiment, the circular installation part 220 is installed on the pin in the second installation hole 420, and the first torsion bar 221 gives the first end 30 of the ratchet member 3 outward from the center of the circ...

Embodiment 3

[0041] refer to Figure 5 As shown, the other structural principles of the centrifugal mechanism in this embodiment are the same as those in Embodiment 1, the difference being that the centrifugal mechanism in Embodiment 1 mainly consists of a ratchet wheel 1, a ratchet holder 2, and three ratchet parts. 3 and three linkages 4 are composed of several parts, wherein three pawls 3 and three linkages 4 are arranged between the ratchet 1 and the pawl holder 2, and are arranged at intervals in the circumferential direction, that is, every two A linkage piece 4 is arranged between adjacent pawl pieces 3 . The centrifugal mechanism in this embodiment is mainly composed of a ratchet 1, a pawl fixing frame 2, a torsion spring 22, two pawl parts 3 and a linkage part 4, wherein two pawl parts 3 and a linkage part 4 and the torsion spring 22 are all arranged between the ratchet 1 and the pawl fixing frame 2, and are arranged at intervals in the circumferential direction, that is, the tor...

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Abstract

The invention relates to a centrifugal mechanism, comprising: a ratchet wheel, a pawl fixing frame, several pawl parts, at least one linkage part and an elastic part for controlling the initial position of the pawl part, the elastic part can be installed on the pawl to fix On the frame or on the ratchet part or on the linkage part, the ratchet part includes a first end, a second end and a first installation part, and the linkage part includes a third end, a fourth end and a second end The mounting part, the second end of the pawl and / or the third end of the linkage is provided with a counterweight, and the fourth end of the linkage is limited to the first end of the pawl along the radial direction , the third end of the linkage member is limited to the inner side of the second end of the pawl member or the first end of the pawl member is limited to the inner side of the fourth end of the linkage member along the radial direction, The second end of the pawl is limited inside the third end of the linkage. The spring force of the ratchet is gradually reduced during the centrifugal work, so that the stability of the whole centrifugal mechanism is higher when it is working.

Description

【Technical field】 [0001] The invention relates to the field of bicycles, in particular to a centrifugal mechanism for automatic shifting. 【Background technique】 [0002] Bicycle transmissions are divided into two types: internal transmissions and external transmissions. The external transmission uses an open chain mechanism as the transmission system. By switching the shifter installed in front of the bicycle, the chain is changed to different flywheels to achieve different chain transmission ratios. 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 no need for regular maintenance, and the advantage of maintenanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62M23/00
CPCB62M23/00
Inventor 黄英可
Owner ZHANGJIAGANG CHUANJUN VEHICLE IND CO LTD
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