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Rear chain-moving device for bicycle

A technology for rear derailleurs and bicycles, which is applied to vehicle components, vehicle gearboxes, chain/belt transmissions, etc., and can solve the waste of metal sheets M, the increased width of the inner plate 18, and the inability to arrange the inner plate 18, etc. problem, achieve the effect of reducing usage and reducing manufacturing cost

Inactive Publication Date: 2003-09-24
SHIMANO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the inside plate 18 of the conventional rear derailleur 10 is formed at its rear end with a second protrusion 18a protruding outwardly to the rear in order to constitute a part of the anti-slip portion 19, so the inside The overall width of the plate 18 becomes larger, and it is impossible to arrange the inner plate 18 more closely on the metal sheet M, that is, the underutilized portion on the metal sheet M will increase, resulting in the metal sheet M unnecessary waste, and cannot further reduce the production cost

Method used

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  • Rear chain-moving device for bicycle
  • Rear chain-moving device for bicycle
  • Rear chain-moving device for bicycle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] First, refer to Figure 6 to Figure 1 0 Example 1 illustrating the present invention is as follows.

[0037] Figure 6 It is a perspective view of the bicycle rear derailleur 100 according to the first embodiment of the present invention. It can be seen from the drawings that the bicycle rear derailleur 100 according to Embodiment 1 of the present invention is and figure 2 The shown conventional bicycle rear derailleur 10 is similarly equipped with: a vehicle body 20 fixed to the bicycle 1 (please refer to figure 1) on the bracket 110; the base member 120 supported on the bracket 110; one end is connected to the link mechanism 130 of the base member 120; the movable member connected to the other end of the link mechanism 130 140; movably supported on the outer plate 150 of the movable member 140; The inner panel 180 between it and the outer panel 150 . The biggest difference between the bicycle rear derailleur 100 according to the first embodiment of the present i...

Embodiment 2

[0047] Second, refer to Figure 11 The bicycle rear derailleur 101 according to the second embodiment of the present invention will be described as follows.

[0048] Since the bicycle rear derailleur 101 of the present embodiment 2 differs from the bicycle rear derailleur 100 of the above-mentioned embodiment 1 only in the shape difference of the bent portion 182 of the inner plate 180, only The points of difference between the two are described, and the description of the configuration of other common parts is omitted.

[0049] With respect to the shape of the bent portion 182 of the bicycle rear derailleur 100 of the first embodiment being an L-shape having the first bent portion 182a and the second bent portion 182b, the bicycle rear derailleur of the second embodiment The shape of the bent portion 182 in the chain link 101 is simply erected from the outer frame portion of the inner plate 180, and the front end edge 182′ of the bent portion 182 is close to the outer contou...

Embodiment 3

[0052] Secondly, with Figure 12 The bicycle rear derailleur 102 according to the third embodiment of the present invention will be described as follows.

[0053] Since the difference between the bicycle rear derailleur 102 of the present embodiment 3 and the bicycle rear derailleur 100 of the above-mentioned embodiment 1 is only the difference in the structure of the anti-off portions 192 and 190 of the two, only The difference between the two will be described, and the description of the structure of other common parts will be omitted.

[0054] Compared with the bicycle rear derailleur 100 of the first embodiment, the bent portion 182 is shaped like an L with the first bent portion 182a and the second bent portion 182b, and is provided on the inner plate 180. . On the other hand, in the rear derailleur 102 for bicycles in the third embodiment, the L-shaped bending portion 152 having the first bending portion 152a and the second bending portion 152b is arranged on the outer...

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PUM

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Abstract

The rear chain-shifting device for bicycle includes: support frame fixed on the bicycle body; base seat member supporting on the supporting frame; link mechanism whose one end is connected with base seat member; movable member connected with another end of the link mechanism; outer side plate piece movably supporting on the movable member; inner side plate piece which is positioned on the inner side of outer side plate piece, and can make guide wheel and tension wheel be free-tunably supported between the outer side plate piece and inner side plate piece; can drive chain of rear chain wheel of rear wheel and make it implement displacement, so that it can implement chain-shifting operation.

Description

[0001] The technical field of the invention [0002] The present invention relates to a rear derailleur for bicycles, in particular to a rear derailleur for bicycles of the same type that can exhibit the same performance and function as the conventional rear derailleur for bicycles, and can be made of sheet metal such as light metal or steel plate with a smaller area. Its main components are, for example, an inner plate or an outer plate, which can reduce the use of materials and further reduce the manufacturing cost of the rear derailleur for bicycles. Background technique [0003] A bicycle 1 with a shifting function is as follows figure 1 As shown, a plurality of rear sprockets 20 and a rear derailleur 10 are installed at the rear of the vehicle body 2 . When the cyclist wants to change gears, he uses the gear shifting device (not shown) installed on the handlebar 3 to pull the tension wheel 17 of the rear derailleur 10 so that the chain originally engaged on one of the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62M9/126
CPCB62M9/126B62M9/128
Inventor 安藤义明
Owner SHIMANO INC