JPH02147487A - Operational device for bicycle - Google Patents

Abstract

PURPOSE:To provide easy operation of speed changing by returning a shift lever to its normal original position through releasing of the operation after turning the shift lever, performing speed change to the forward stroke side with turning of the lever, and also carrying out speed change to the return stroke side through operation of a retention releasing means. CONSTITUTION:When a shift lever 6 is moved counterclockwise as forward stroke operation, a takeup member 3 makes forward stroke in the direction counterclockwise so as to tract an operational wire, and one step shift is obtained when rotation of the lever 6 in the forward stroke direction reaches the stroke of a detaining part 41. The speed change condition can be retained certainly in the condition in which the desired low speed shift position is attained. When the operation of the lever 6 is released, the lever 6 moves in the return stroke direction to contact a position setting part 13 and stops at the original position. When an operational element 71 is pushed, return stroke is made by the force of an energization spring 74 to cause separation from engagement with a restriction boss 72, and a retaining element 44 is returned to allow returning of the takeup member 3, which causes a detent 42 to be detained with the detaining part 41 on one step higher position, and return stroke by a return spring 30 is hindered to ensure that the speed change condition with shifting made into high speed position is maintained certainly.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a bicycle operating device, and more particularly to a bicycle operating device capable of performing braking and gear shifting.

(Prior Art) Conventionally, as this type of operating device, as seen in Japanese Utility Model Publication No. 48-2598 (U.S. Pat. No. 3,478,617), a brake lever and a wire winding part are provided on a fixed member fixed to the handle. It is known that a gearshift lever is pivotally supported so that braking is performed by rotating the brake lever, and gears are changed by rotating the gearshift lever.

(Problem to be Solved by the Invention) However, this conventional device uses a gear shift lever with a wire winding part, and creates resistance to the rotation of the gear lever itself to overcome the force of the return spring in the transmission. Since the shift operation position of the shift lever is maintained for each gear shift position by attaching the gear shift lever, the operating position of the shift lever is different for each gear shift stage, which poses a problem that it is difficult to perform the shift operation. Ta.

The present invention was invented in view of the second problem, and the purpose is to be able to brake by operating a brake bar, and to change gears by operating a gear shift lever, regardless of the number of gears. , the gear shift lever can always be returned to its original position, the gear can be shifted to the forward side by operating from this original position, and the gear can also be shifted from the forward side to the reverse side. It is.

(Means for Solving the Problems) Accordingly, the present invention provides a fixing member (1
), and a brake lever (2) pivotally supported on the fixed member (1).
), the fixed member (1) rotatably supports a wire winding body (3) which is rotated back in the wire unwinding direction by the force of a spring, and the rotation of this winding body (3) is a position holding mechanism (4) that positions the position in stages and holds the position; A speed change lever (6) that rotates the winding body (3) in the wire winding direction, and a return mechanism that returns the speed change lever (6) to its original position after the speed change operation.
112 of the niI winding body (3).
1. Release the position holding tS by the side of the position holding machine (4),
A holding/releasing means (7) is provided for causing the wound body (3) to return f11 in the wire unwinding direction.

(Function) Braking can be performed by rotating the brake lever (2), and the shift lever (2) can be applied regardless of the number of gears.
After the operation of step 6), the shift lever (6) can always be returned to its original position by releasing the operation.Also, by rotating the shift lever (6), the shift lever (6) can be turned to the forward side. By operating the holding release means, the gear can be shifted to the backward movement side.

(Embodiment) In the embodiment shown in FIGS. 1 to 11, the straight rod portion extending in the left-right direction of the bicycle is bent from both ends toward the front side in the front-rear direction of the bicycle, and the tip thereof is curved downward. A fixing member (1) that is fixed to the bent rod part (Hl) of a drop handle (H) equipped with a substantially C-shaped bent rod part (Hl) oriented rearward in the front-rear direction via a fixing means such as a band member. and a brake lever (2) that is pivotally supported on the top of the fixed member (1) via a lever shaft (11) and that can be operated with a hand that grips the fixed member (1). A support shaft (12) substantially parallel to the lever shaft (11) is provided in the intermediate portion of the fixing member (1) in the device, and a wire for locking one end of the operating wire is provided on this support shaft (work 2). A substantially cylindrical wire winding body (3) which has a locking part (31) and rotates back in the wire unwinding direction by the force of a return spring (30) is rotatably supported, and the winding body (3) ), a plurality of engaging portions (41) for positioning the rotating position of the winding body (3) in stages; and an engaging body that engages with the engaging portions (41) to maintain the rotating position of the winding body (3). (42) and a position holding mechanism (4) equipped with the support shaft (11n),
It is rotatable in the same direction as the winding body (3) from an operation start position (hereinafter referred to as the original position) that can be operated from a position where the fixing member (1) is gripped by the winding body (3). , supports a speed change lever (6) that rotates this winding body (3) in the wire winding direction via a transmission body (5), and controls the operation part (62) of this speed change lever (6) from 1 to 1. ) is disposed below the brake lever (2), and a position setting part (13) that comes into contact with the shift lever (6) to stop the shift lever at the original position is attached to the fixing member (1). A lever spring (60) is interposed between the speed change lever (6) and the support shaft (12) to return the speed change lever (6) to its original position after a speed change operation, The shift lever (6) can be rotated from the original position at any time with the tip of the hand that grips the fixed member (1), and this rotation operation enables multi-speed shifting. ) is released from the position holding mechanism (4) of the winding body (3).
) is returned to the wire unwinding direction (7)
.

In the above configuration, the fixing member (1) is formed into a box shape with an easy-to-grip outer shape, and the middle part of the inner wall that becomes the inner side when fixed to the curved rod part is opened outward. , the support shaft (12) is attached to the cane parallel to the lever shaft (11) in the middle part of the outer wall, facing the open part of the inner wall. Also, on the front wall is the gear shift lever (6).
) is provided, and one end of the guide hole (14) serves as a position setting part (13) for stopping the speed change lever (6) at the original position.

Further, the support shaft (12) rotatably supports the speed change lever (6) on its base end side and the winding body (3) on its intermediate portion, and has a non-circular fitting on its distal end side. Part (12
a) and a threaded portion (12b), and the fitting portion (12b) is provided.
In a), a disk-shaped positioning body (43) having the retaining part (41) is supported freely only in the axial direction, and the screw m (12b) is attached to the positioning body (43). A flanged seat 7) body (15) for regulating the amount of movement is screwed together.

Further, the winding body (3) has a wire locking portion (31) on the negative side.
), and the transmission body (5) is formed on the outer periphery of its base end in the axial direction when the gear shift lever (6) is operated in the forward direction.
A plurality of feed teeth (32) are provided that engage with the gear shift lever (6) to transmit the operating force of the speed change lever (6), and the engagement body (42) is provided inside the tip portion, and the positioning body (43) is provided. A disc-shaped holding body (44) facing the is internally movable in the axial direction and non-rotatable relative to each other, and the engaging body (42) is engaged with one of the engaging parts (41). There is. Father, winding body (
3), a wire guide groove (33) continuous with the wire locking portion (31) is recessed in the circumferential direction on the outer periphery of the intermediate portion.

Further, the speed change lever (6) has a shaft hole that fits into the support shaft (12) and a contact part that contacts the position setting part (13) in the original position, as shown in Fig. 7.8. The operating portion (θ2) of the base (61) extends in the opposite direction to the base via a rising portion bent at right angles from one end of the base (61). A pivot shaft (θ3) parallel to the support shaft (12) is erected at the side end,
The transmission body (5) of the claw-shaped cane is pivotally supported on this pivot shaft (63), and the transmission body (5) is placed between the transmission body (5) and the speed change lever (6). A biasing spring that biases in one direction (
50).

Further, the positioning body (43) of the position holding mechanism (4) is
It has a disc shape with a fitting hole that non-rotatably fits into the fitting part (12a), and has the engaging part (41) on one end surface thereof.
are provided at a predetermined interval in the circumferential direction, and a pair of guide holes (43a) and a pair of I'x through holes (4
3b) are provided with a phase difference of 90°. Further, two sets of the engaging bodies (42) are integrally provided on one end surface of the holding body (44). Moreover, at one end surface of this holding body (44),
At a position different in phase from the engaging body (42), a plurality of restraints (45) are arranged in a row displaced in the pitch circumferential direction within one pitch of the retaining part with respect to the engaging part (41). It is set up. Further, the holder (44) and the support shaft (12)
between the bushing (16) that fits into the holding body (4
4) in the direction of the positioning body (43).
2) is made to be larger than the restoring force of the return spring (30).

Further, the holding release means (7)
An operating body (71) supported on the outer periphery of the
), the Oq layer regulating tooth 45), and the guide hole (43a
), and has two regulating protrusions (72) that can engage with the regulating teeth (45) through the operating body (71) and the positioning body (
43), and the spacer (73) is biased in a direction in which the restriction protrusion (72) is disengaged from the restriction teeth (45). The operating body (71) can be moved in the axial direction by a predetermined amount with respect to the nut body (15), and the spacer (73) is moved by the pressing operation of the operating body (71). The operation force of the operating body (71) is transmitted from the regulating protrusion (72) and the regulating tooth (45) to the holding body (44) by moving it parallel to the support shaft (12). is moved in the direction away from the positioning body (43), and the engaging portion (
41), and the winding body (2) is returned to the wire rewinding direction by the restoring force of the return spring (20). Further, the regulating protrusion (72) is
When the operating body (71) is in a suppressing operation, the regulating tooth (45)
When engaged with the engaging portion (41), the return amount of the winding body (2) is
This prevents the distance from becoming larger than the distance between the two.

Further, the operating body (71) is provided with an inward flange (71a) that faces the flange (15a) of the nut body (15), and the flange (15a) of the inward flange (71a) The operating body (71) is stopped at the original position by contact with the operating body (71).

A visible covering is fitted on the outside of the fixing member (1) to make it easier to grip.

Therefore, with respect to the fixing member (1) fixed to the curved rod part of the drop handle, the thumb of the hand gripping the fixing member (1) is placed inside, and the four fingers other than this thumb are placed outside, When performing a braking operation while operating the handle while gripping the fixed member (1) with the thumb and four fingers, as in the past, the index finger, middle finger and Braking can be achieved by extending the ring finger along the brake lever (2), hooking it onto the operating section of the brake lever, and pressing the operating section downward to swing the brake lever (2).

In addition, when performing a gear shift operation while gripping the fixed member (1) and operating the handle, move your thumb inside the fixed member (1) to its original position on the front side relative to the fixed member (1). can be easily brought into contact with the operation part of the gear shift lever (8) located at It is possible to change gears to the forward side by rotating the angle.

The gear shown in FIG. 3 is in a middle speed state, and the gear shift lever (6) is biased by the lever spring (60) and stopped at the original position. Then, when the thumb of the hand that grips the fixed member (1) is brought into contact with the operation part of the gear shift lever (6) and the gear lever (6) is operated forward in the counterclockwise direction from the state shown in FIG. Feed dog (3) of handle (3)
2), the operating force of the speed change lever (6) is transmitted to the winding body (3), and this winding body (3) moves counterclockwise to pull the operating wire. , the gear shift lever (6)
When the forward rotation of the engaging portion (41) reaches a stroke of 1 pitch, the gear can be shifted to one gear, and when the stroke of the engaging portion (41) reaches a stroke of two pitches, the gear can be shifted to two gears. Up to gear shifting, one operation of the thumb will change each gear.
Alternatively, multiple gears can be shifted at once. In addition, when shifting to four or more gears, first return the shift lever (6) to its original position, then press the shift lever (6) again.
By operating the gears forward, it is possible to shift gears one gear at a time or multiple gears all at once. Then, when the gear is shifted to a desired low speed position, the engaging body (42) engages with the desired engaging portion (41), and the rotation of the winding body (3) in the backward movement direction is prevented, and the low speed side This makes it possible to reliably maintain the shifted gear state. After shifting as described above, when the operation of the shift lever (6) is released, the shift lever (6) is released.
6) moves backward in the backward movement direction by the force of the lever spring (60),
Upon contact with the position setting part (13), the gear shift lever (6) returns to its original position and stops, preparing for the next operation.

Therefore, when the number of gears is 5 to 6, it is possible to easily shift from high speed to low speed by pushing the speed change lever (6) twice with the thumb.

Next, in order to shift from the low-speed gear to the high-speed gear again, the thumb of the hand gripping the fixed member is brought into contact with the top of the operating body (71) in the original position. The operating body (71) is operated to suppress, and this operation causes the spacer (73) to move against the biasing spring (74), causing the regulating protrusion (72) to engage with one of the regulating teeth (45). When engaged, the suppressing force of the operating body (71) is transmitted to the holding body (44). This holder (44) is connected to the pressing spring (46).
), the engaging body (42) is disengaged from the engaging portion (41), and the winding body (3) moves against the return spring (
30) is used to move back a predetermined amount. At this time, the regulation tooth (45) is displaced in the circumferential direction within the one pitch ungrooved range of the retaining portion (41), so the regulation tooth (45) and the regulation protrusion (72) are Depending on the case, the roll body (3
) is regulated by the return spring (30), and the winding body moves within a range of less than 1 pitch with respect to the pitch between the engaging parts, and the amount of return movement of the operating body (71) is regulated. When the operation is released, the operating body (71) moves back by the force of the urging spring (74), and the regulating protrusion (72) is disengaged from the regulating teeth (45), and the pressing spring (46) ), the holding body (44) returns and the winding body (3
) moves back by the remaining one pitch by the force of the return spring (30), and the engaging body (42) engages with the engaging portion (41) on the − step height side, and this engagement causes the above-mentioned Winding body (
3), the return movement by the return spring (30) is prevented, and the gear change state in which the gear has been shifted to the high speed position can be reliably maintained. Moreover, the returned operating body (71) is inward facing tsuba (71).
a) comes into contact with the flange of the nut body (15) and stops at the original position, preparing for the next operation. Then, when the operation body (71) that has stopped at the original position is pressed again, the engagement body (42) is released after the regulation protrusion (72) is completely engaged with the regulation tooth (45), as in the case described above. The engagement part (41) is released, and the winding body (3) returns to the return spring (3o).
, the wire can be further relaxed, and the gear can be further shifted to a high and far side position. Also, by releasing the operation body (71), the engagement body (42
) engages with the adjacent low-speed side retaining part (41) and can maintain the double-movement position of the winding body (3), and the double-movement operation body (71) returns to the original position. It stops. This shift from the low speed side to the high speed side is performed by engagement ff1 (4
The regulating protrusion (72) has a regulating tooth (45) at every pitch of 1).
Since the amount of backward movement of the winding body (3) is regulated by engaging with the gear, the gear can always be shifted to the backward movement side one step at a time.

This shift from the low speed side to the high speed side is performed by engagement 11S.
(41), the regulating protrusion (72) is arranged at every pitch of the regulating tooth (4).
5) to restrict the amount of backward movement of the winding body (3), the operating body (71) needs to be operated forward a number of times corresponding to the gear position. However, the regulating protrusion (72)
The engaging body (42) engages t'! by adjusting the operation of the operating body (7). The speed of the winding body (3) may be changed by controlling the amount of engagement with the IK (41) and rotating the winding body (3) one step at a time or a plurality of steps at once.

In the embodiment described above, the return spring (30) is provided to cause the winding body (3) to move backward, but other methods may also be used, such as using a return spring in a transmission,
The winding body (3) may be moved back by the force of this return spring. Therefore, the roll body (3)
and the fixing member (1).
0) is not necessarily required.

Further, although the positioning body (43) of the position holding mechanism (4) is supported by the fixed member (1) and the engaging body (42) is linked to the rotation of the winding body (3), it is also possible to do the opposite. good. Further, the engagement Fffi (41) and the engagement body (42) have supports t, ν
In addition to being opposed in the axial direction of the shaft (12), they may also be opposed in the radial direction. In this case, for example, the roll body (3
), the retaining portions (41) are arranged in rows on the outer periphery of the fixing member (1), and the engaging body (42) is formed into a claw shape.
Further, the regulating teeth (45) of the holding/releasing means are arranged in rows on the outer periphery of the winding body (3), and the regulating protrusions (72) are arranged on the outer periphery of the winding body (3). It is arranged so as to be operable on the outside in the radial direction. Further, the engaging body in FIG. 1 may be formed separately from the holding body (44) and a ball may be used. In short, the structure of the position holding mechanism and the structure of the holding release means are not particularly limited.

Furthermore, the operating device of the present invention may be attached to a handle other than a drop handle, such as a flat handle, in addition to being attached to a drop handle as described above. In this case, the operating parts of the gear shift lever (6) and the holding/releasing means are operated by gripping the knob and holding the brake lever (2).
) is placed in a position where it can be operated.

(Effects of the Invention) According to the present invention as shown in L below, it is possible to brake by operating the brake lever (2), and to change gears by operating the gear shift lever (5), while changing the gear position. Without,
Since the gear shift lever (5) can always return to its original position, and the gear can always be shifted to the forward side by operating from this original position,
It is very easy to perform a gear shift operation, and it is also possible to shift to the reverse side by operating the holding release means.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted enlarged cross-sectional plan view showing one embodiment of the operating device of the present invention, Fig. 2 is a reduced partially omitted vertical cross-sectional side view, Fig. 3 is a longitudinal side view of the same, and Fig. 4 is a release of retention. FIG. 5 is an explanatory diagram showing the operating state; FIG. 6 is a perspective view of the entire device; FIG. 7 is a sectional view of only the gear shift lever; FIG.
The figures are a sectional view taken along line 7 - ■, Figure 9 is a front view of the holder with the engaging body, Figure 10 is a back view of the spacer with the regulating protrusion, and Figure 11 is the same side view. be. (1)... Fixed member (2)... Brake lever (3)... Winding body (4)... Position holding mechanism (6)... Speed change lever (7) ...Retention release means Fig. 5 Fig. 7 Fig. 8 Fig. 8 Fig. 9 Fig. 4

Claims (1)

[Claims] 1) A fixing member (1) fixed to the handle, and a brake lever (2) pivoted to the fixing member (1), and the fixing member (1) is returned to the wire unwinding direction by the force of a spring. a position holding mechanism (4) which rotatably supports a rotating wire winding body (3), and which positions the rotational position of the winding body (3) in stages and holds the position; a speed change lever (6) rotatable in the same direction as the winding body (3) from its original position and rotating the winding body (3) in the wire winding direction; A return means for returning the speed change lever (6) to the original position after the speed change operation is provided, and the position holding mechanism (4) of the winding body (3) is released and the winding body (3) is returned to its original position. ) is provided with a holding release means (7) for returning the wire to the unwinding direction.