EP0157983A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Speed change operating device for a bicycle
Assignee: Shimano Inc
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Filing: 1984-11-19
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Granted: —
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Expires: 2004-11-19
Abstract
Abstract The present invention relates to a speed-change operating device suitable for use with a cycle derailleur having a return spring, which device has a base member 1 having a pivot shaft 2 and a control lever 3 mounted rotatably on said pivot shaft 2 for actuating the derailleur. The speed change operating device has a friction mechanism for subjecting said control lever 3 to a rotational resistance against the biasing force of the derailleur return spring, and a positioning mechanism for said lever 3 mechanism is provided with a positioning member 5 having a plurality of engagement portions 5a for setting the speed change stages of the derailleur and an engaging member 6 engageable with at least one of said engagement portions 5a. An operating mechanism is provided for selecting operation or non-operation for positioning of said control lever 3 by means of said positioning member 5 and engaging member 5 of said positioning mechanism.
Inventors
- 👤 Masashi Nagano
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 13:03
CPC Classifications
B; B62; B62M; B62M25/00; B62M25/02; B62M25/04; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/20037; Y10T74/20207; Y10T74/20256; Y10T74/20268; Y10T74/2028; Y10T74/20287; Y10T74/20396; Y10T74/20402; Y10T74/2042; Y10T74/20438; Y10T74/20576; Y10T74/20582; Y10T74/20612; Y10T74/20636; Y10T74/2066
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
148 words
A speed-change operating device suitable for use with a cycle derailleur having a return spring, which device has a base member (1) having a pivot shaft (2) and a control lever (3) mounted rotatably on said pivot shaft (2) for actuating the derailleur, said speed change operating device having a friction mechanism for subjecting said lever (3) to a rotational resistance against the biasing force of said derailleur return spring, a positioning mechanism for said lever (3), which mechanism is provided with a positioning member (5) having a plurality of engagement portions (5a) for setting the speed change stages of said derailleur and an engaging member (6) engagable with at least one of said engagement portions (5a); and an operating mechanism for selecting operation or non-operation for positioning of said control lever (3) by means of said positioning member (5) and engaging member (5) of said positioning mechanism.
Claim 2
Dependent Claim
148 words
A speed-change operating device suitable for use with a cycle derailleur having a return spring, which device has a base member (1) having a pivot shaft (2) and a control lever (3) mounted rotatably on said pivot shaft (2) for actuating the derailleur, said speed change operating device having a friction mechanism for subjecting said lever (3) to a rotational resistance against the biasing force of said derailleur return spring, a positioning mechanism for said lever (3), which mechanism is provided with a positioning member (5) having a plurality of engagement portions (5a) for setting the speed change stages of said derailleur and an engaging member (6) engagable with at least one of said engagement portions (5a); and an operating mechanism for selecting operation or non-operation for positioning of said control lever (3) by means of said positioning member (5) and engaging member (5) of said positioning mechanism.
Claim 3
Dependent Claim
64 words
A device according to claim 1, wherein one of said positioning member (5) and engaging member (6) of said positioning mechanism engages said control lever (3) and the other engages the base member (1), said operating mechanism including a clutch member (12) for disengaging one of said positioning member (5) and engaging member (6) from one of said lever (3) and base member (1).
Claim 4
Dependent Claim
102 words
A device according to claim 1 or claim 2, wherein said control lever (3) has a boss having a generally circular recess (3a) said positioning member (5) being generally circular so as to fit into said generally circular recess (3a) and having an engaging groove (5b) engagable with said clutch member (12), said clutch member (12) being supported on said control lever (3) so as to be movable to an engaging position where said clutch member (12) enters said engaging groove (5b) on said positioning member (5) and a disengaging position where said clutch member (12) disengages from said engaging groove (5b).
Claim 5
Dependent Claim
90 words
A device according to claim 2, wherein said engaging member is provided with a generally tubular support member (13) for holding said engaging member (6), said support member (13) having an engaging groove engagable (13c) with said clutch member (12), said clutch member (12) being mounted on said control lever (3) so as to be movable between an engaging position where said clutch member (12) enters said engaging groove (13g) of said support member (13) and a disengaging position where said clutch member (12) disengages from said engaging groove (13e).
Claim 6
Dependent Claim
53 words
A device according to claim 1, wherein said operating mechanism has an operating member (12) for allowing one of said positioning member (5) and engaging member (6) of said positioning mechanism to be displaced between an engaged position of said engaging member (6) and a disengaged position thereof with respect to the other.
Claim 7
Dependent Claim
59 words
A device according to claim 5, wherein said operating member has control bores for receiving therein said engaging members (6) and displacing said engaging members (6) between an engaging position thereof with respect to said engagement portions (5a) of said positioning member (5) and a disengaging position of the same, and is supported rotatably on said positioning member (5).
Claim 8
Dependent Claim
47 words
A device according to claim 5, wherein said operating member has a releasing member which enters between said positioning member and said engaging member to disengage said engaging members from said engagement portions of said positioning member, and is axially movably supported on said pivot shaft (2).
Claim 9
Independent Claim
119 words
A device according to any one of claims 1 to 7 wherein is provided an adjustment screw member (9) screw-threadedly engaging said pivot shaft (2) for adjustment of rotational resistance applied by said friction mechanism and a cap (7) supported non-rotatably with respect to said base member (1) and axially movably only relative to said pivot shaft (2) so as to move axially thereof in association with screwing movement of said screw member (9), said control lever (3) having a boss, said positioning mechanism being interposed between said cap (7) and said boss, so that said adjustment screw member (9) can be screwed in or out for selection of a respective one of said friction mechanism and positioning mechanism.
Claim 10
Dependent Claim
118 words
A device according to claim 8, wherein said positioning member (5) of said positioning mechanism comprises a generally tubular member having a plurality of engagement portions (5a) extending radially of said pivot shaft (2) said engaging member (6) is provided with a generally tubular holding member (11) for holding said engaging members (6) so that one of said positioning member (5) and holding member (11) is resiliently radially displacable and said cap (7) has a release member ( ) which enters between said positioning member (5) and said holding member (11) and resiliently displaces one of said positioning . member (5) and holding member (11) thereby to disengage said engaging member (6) from the respective engagement portion (5a).
Claim 11
Dependent Claim
109 words
A device according to claim 8, wherein said positioning member (5) of said positioning mechanism has a plurality of engagement portions (5a) extending axially of said pivot shaft (2), said engaging member (6) is disposed opposite said engagement portions (5a) in the axial direction with respect to said pivot shaft (2) and one of said positioning member (5) and engaging member (6) is displacable axially of said pivot shaft (2), said speed change operating device having a biasing means (19) formed and arranged so as to be movable with said adjustment screw member (9) upon screwing thereof for disengagin - said engaging member (6) from said engaging portions (5a).
Claim 12
Dependent Claim
18 words
ll. A device according to claim 10, wherein said biasing means (19) is provided at said cap (7).
Claim 13
Dependent Claim
37 words
A device according to claim 10, providing between said cap (7) and said adjustment screw member (9) a holding means ( ) for holding said cap (7) in position with respect to said adjustment screw member (9).
Claim 14
Dependent Claim
99 words
A device according to claim 1, wherein said positioning member (33) of said positioning mechanism has a plurality of engagement portions (33a) extending axially of said pivot shaft (2), said engaging member (34) being disposed opposite said engagement portions (33a) in the axial direction with respect to said pivot shaft (2), one of said positioning member (33) and engaging member (34) being displacable axially of said pivot shaft (2), said operating mechanism being provided with an operating means (37) rotatably movable around the axis of said pivot shaft (2) for selecting one of said friction mechanism and positioning mechanism.
Claim 15
Dependent Claim
65 words
A device according to claim 13, wherein is provided a friction plate (41) displacable axially by rotatably operating said operating means (37) and a release pin (40) which transmits the axial displacement of said friction plate (41) to one of said positioning member (38) and engaging member (34) axially displacable in said positioning mechanism, for disengaging said engaging member (34) from said engagement portions (33a).
Claim 16
Dependent Claim
33 words
A device according to claim 13, wherein said operating means is provided with an operating member (37) having a first cam face(37a) and a cam body (38) having a second cam face (38a).
Claim 17
Dependent Claim
67 words
16 . A device according to claim 13, wherein is provided a fixing means (36) for fixing said positioning member (33) to said base member (1), a coupling means (34b) for coupling said engaging member (34) to said control lever (3) so as to be non-rotatable relative thereto but axially movable only, and spring means (30) for biasing said engaging member (34) against said positioning member (33).
Claim 18
Dependent Claim
30 words
A device according to claim 13, wherein is provided a holding means (36,43) for holding said operating member (37) in actuating positions for said positioning mechanism and said friction mechanism.
References Cited (Backward Citations)
No citation records indexed.
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