JP6404804B2 - Bicycle components - Google Patents

Description

  The present invention relates to a bicycle component.

  As an example of a bicycle component, a drive unit including a motor that assists a human-powered driving force applied to a bicycle crankshaft is known. The motor unit of Patent Document 1 as an example thereof includes an attachment portion that can be attached to a bracket provided on a bicycle frame. The mounting portion is inserted between a pair of side plate portions constituting the bracket, and the side plate portion and the mounting portion are fixed by bolts, whereby the motor unit is fixed to the bracket.

Japanese Patent No. 4416620

  According to the above motor unit, a gap may be formed due to a manufacturing error between the side plate portion fixed by the bolt and the mounting portion. In that case, the motor unit may rattle against the pair of side plate portions as the bicycle travels. In addition, it is thought that the subject similar to the above-mentioned subject exists not only in the motor unit of patent document 1, but the component for bicycles attached to the flame | frame of a bicycle.

  An object of the present invention is to provide a bicycle component capable of suppressing rattling against a frame.

  [1] An aspect of a bicycle component according to the present invention is a housing that rotatably supports a crankshaft, a first attachment portion that is provided on the housing and can be attached to a bicycle frame, and the first attachment. In a state where the portion is attached to the frame, the adjustment member includes at least a part disposed in a gap formed between the first attachment portion and the frame.

[2] According to an example of the bicycle component, the adjustment member is a washer.
[3] According to one example of the bicycle component, the first attachment portion includes a hole into which a bolt can be inserted, and can be attached to the frame by the bolt inserted into the hole.

[4] According to one example of the bicycle component, the hole of the first mounting portion is formed with a female screw connectable to the bolt.
[5] According to one example of the bicycle component, the bolt can be inserted into the washer.

[6] According to an example of the bicycle component, the washer is a tapered washer.
[7] According to an example of the bicycle component, the taper washer includes a long hole extending in an inclined direction.

[8] According to one example of the bicycle component, the tapered washer includes a first inclined surface that comes into contact with the first attachment portion or the frame.
[9] According to one example of the bicycle component, the first inclined surface is processed to increase frictional resistance.

[10] According to an example of the bicycle component, the first attachment portion includes a second inclined surface that is in surface contact with the first inclined surface of the tapered washer.
[11] According to one example of the bicycle component, the second inclined surface is processed to increase frictional resistance.

[12] According to one example of the bicycle component, the adjustment member is supported by the first attachment portion so that the amount of protrusion from the first attachment portion can be changed.
[13] According to one example of the bicycle component, the adjustment member includes one of a male screw and a female screw, and the first attachment portion is coupled to one of the male screw and the female screw of the adjustment member. Including the other of a male screw and a female screw.

[14] According to one example of the bicycle component, the first attachment portion includes a support portion having the male screw on an outer periphery, and the adjustment member is a nut having the female screw.
[15] According to one example of the bicycle component, the first attachment portion includes a hole into which a bolt can be inserted, and can be attached to the frame by the bolt inserted into the hole.

[16] According to an example of the bicycle component, the adjustment member includes a hole into which the bolt can be inserted.
[17] According to one example of the bicycle component, the hole of the first attachment portion is formed with a female screw connectable to the bolt.

[18] According to one example of the bicycle component, the first attachment portion includes an insertion hole, and the adjustment member is press-fitted into the insertion hole of the first attachment portion.
[19] According to one example of the bicycle component, the adjustment member includes a hole into which a bolt can be inserted, and the first attachment portion is formed by the bolt inserted into the hole of the adjustment member. It can be attached to.

[20] According to an example of the bicycle component, the hole of the adjustment member is formed with a female screw connectable to the bolt.
[21] According to one example of the bicycle component, the outer peripheral portion of the adjustment member is provided with a suppressing portion that suppresses movement of the adjustment member relative to the first attachment portion.

[22] According to an example of the bicycle component, the suppressing portion includes a knurling formed on the outer peripheral portion of the adjusting member.
[23] According to one example of the bicycle component, the adjustment member is provided at a holding portion held by the first attachment portion, and at an end portion of the holding portion, and the first attachment portion and the And a flange portion disposed in the gap formed between the frame and the frame.

[24] According to one example of the bicycle component, the first attachment portion further includes a recess capable of accommodating the flange portion.
[25] According to an example of the bicycle component, the holding portion is press-fitted into the insertion hole of the first attachment portion.

  [26] According to one example of the bicycle component, the insertion hole of the first attachment portion includes a first portion into which the adjustment member is press-fitted, and a second portion having an inner diameter smaller than an inner diameter of the first portion. A female screw is provided on the second part.

  [27] According to one example of the bicycle component, an inner diameter of the second portion is smaller than an inner diameter of the hole of the adjustment member, and when viewed from the axial direction of the bolt, the internal thread of the second portion is: It is provided in the range of the hole of the adjusting member.

  [28] According to one example of the bicycle component, the second component is provided on the housing and can be attached to the frame at a position different from the first attachment portion in a direction parallel to the axis of the crankshaft. A mounting portion is further included.

  [29] According to one example of the bicycle component, at least a part of the adjustment member is opposite to the second attachment portion with respect to the first attachment portion in a direction parallel to the axis of the crankshaft. Placed on the side.

  [30] According to one example of the bicycle component, the housing is disposed outside the housing and rotatably supports an output rotating body for transmitting rotation of the crankshaft to a rear wheel. In a direction parallel to the axis of the crankshaft, the second mounting portion is provided closer to the output rotator than the first mounting portion.

[31] According to an example of the bicycle component, the bicycle component further includes a motor for assisting a human driving force applied to the crankshaft.
[32] According to an example of the bicycle component, the bicycle component includes a transmission for changing a speed ratio of the bicycle.

  According to the bicycle component described above, rattling against the frame can be suppressed.

The disassembled perspective view of the drive unit and bracket of 1st Embodiment. The perspective view of the drive unit and bracket of FIG. 1 couple | bonded. The disassembled perspective view of the bracket of FIG. 1 and a 1st attaching part. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. Sectional drawing of the 5-5 line | wire of FIG. The flowchart which shows the attachment procedure of a drive unit. The schematic diagram regarding process S1, S2 of FIG. The schematic diagram regarding process S3 of FIG. The schematic diagram regarding process S4, S5 of FIG. The perspective view of the 1st attaching part and bracket of the drive unit of 2nd Embodiment. FIG. 11 is a cross-sectional view of the bracket of FIG. 10 and the first mounting portion coupled together. The perspective view of the 1st attaching part and bracket of the drive unit of 3rd Embodiment. The perspective view of the adjustment member of FIG. FIG. 13 is a sectional view of the bracket of FIG. The flowchart which shows the attachment procedure of a drive unit. The schematic diagram regarding process S11-S13 of FIG. The disassembled perspective view of the bracket of 4th Embodiment and a 1st attaching part. Sectional drawing of the combined 1st attaching part and adjustment member. Sectional drawing of the combined 1st attaching part and bracket. The flowchart which shows the attachment procedure of a drive unit. Sectional drawing of the 1st attachment part and adjustment member regarding adjustment of the protrusion amount of the adjustment member from a 1st attachment part. Sectional drawing of the 1st attaching part and bracket of a 1st modification. The side view of the 1st attaching part of the 2nd modification. Sectional drawing of the 1st attaching part and bracket of a 3rd modification. Sectional drawing of the 1st attaching part and bracket of a 4th modification. Sectional drawing of the 1st attaching part and bracket of a 5th modification. The schematic diagram of the 1st attaching part and bracket of a 6th modification. The front view of the drive unit of a 7th modification. Sectional drawing of the 1st attaching part and adjustment member of an 8th modification. The top view of the drive unit of the 9th modification, and its periphery. The rear view of the drive unit of a 9th modification. The rear view of the drive unit of a 9th modification. The disassembled perspective view of the crankshaft and crank arm of a 9th modification.

(First embodiment)
Hereinafter, with reference to the drawings, a configuration of a drive unit which is an example of a bicycle component and a mounting structure between the drive unit and a frame will be described.

  As shown in FIG. 1, the drive unit 10 is attached to a bracket 100 which is a part of a bicycle frame. The drive unit 10 includes a crankshaft 12 and a housing 20 that rotatably supports the crankshaft 12. The bracket 100 is fixed to, for example, a down tube and a seat tube. The bracket 100 may be connected to the chain stay.

The crankshaft 12 extends through the housing 20 so as to protrude from both sides of the housing 20 in the left-right direction of the bicycle.
The housing 20 accommodates a motor 14 that assists the manual driving force applied to the crankshaft 12 and a control circuit (not shown) that controls the motor 14. The housing 20 is provided with an output portion (not shown) to which a front sprocket can be attached. The output unit is provided coaxially with the crankshaft 12. The motor 14 may apply assist force to the driving force transmission path from the crankshaft 12 to the output unit via a speed reducer. The drive unit 10 further includes a transmission 16 that shifts the rotation of the crankshaft 12 and applies it to the output unit. The drive unit 10 has a function of assisting human driving force and a function of changing a speed ratio of the bicycle. The configuration of the transmission 16 may be configured by combining gears, for example, may be configured by a planetary gear mechanism, or may be configured by combining a sprocket and a chain.

  One or a plurality of wirings are connected to the drive unit 10, and in the present embodiment, a first wiring 18A and a second wiring 18B are connected. The first wiring 18A and the second wiring 18B each include a plurality of electric wires. The first wiring 18A may include, for example, an electric wire that can be connected to the battery holder. The second wiring 18B may include a cable that can be connected to the bicycle display device, a cable that can be connected to the rear wheel or an electric transmission provided near the rear wheel, and a cable that can be connected to the headlamp. Good. Each cable transmits at least one of power and signal. The first wiring 18A and the second wiring 18B are electrically connected to the control circuit.

  The housing 20 includes a housing body 22 and a cover 24. The shape of the housing main body 22 is a box shape in which one side of a direction parallel to the axis C of the crankshaft 12 (hereinafter referred to as “crankshaft direction CA”) is opened. At least a part of the motor 14, a part of the first wiring 18A, and a part of the second wiring 18B are accommodated in the housing body 22. The cover 24 closes the opening of the housing body 22. The cover 24 is fixed to the housing main body by bolts 26, for example. Only a part of the motor shaft of the motor 14 may be accommodated in the housing body 22. The housing body 22 may be provided with a connector that is electrically connected to the control circuit. The first wiring 18 </ b> A and the second wiring 18 </ b> B may be detachably connected to the control circuit via a connector provided on the housing body 22. When the connector is provided on the housing body, the connector is preferably covered with a cover different from the cover 24.

  The drive unit 10 is provided in the housing 20 and is attached to the bracket 100 at a position different from the first attachment portion 28 in the crankshaft direction CA, and a first attachment portion 28 that can be attached to the bicycle frame. The attachment part 30 is included. A plurality of first mounting portions 28 and second mounting portions 30 may be provided in the drive unit 10. The first attachment portion 28 is formed integrally with the housing 20.

  The housing 20 of this embodiment is provided with three first attachment portions 28 and three second attachment portions 30. The first attachment portion 28 and the second attachment portion 30 are paired and project outward from the side wall 22A of the housing body 22. The three first attachment portions 28 are located on the cover 24 side in the crankshaft direction CA, and the three second attachment portions 30 are located on the cover 24 side with respect to the first attachment portion 28 in the crankshaft direction CA. Are located on the opposite side at a distance. The plurality of first attachment portions 28 and the plurality of second attachment portions 30 are located at intervals in the circumferential direction around the crankshaft direction CA of the housing 20.

  The housing 20 is formed with an opening 22B from which the second wiring 18B is drawn. The opening 22B is formed at the base end of the first first mounting portion 28 in the circumferential direction around the crankshaft direction CA of the housing 20 among the three first mounting portions 28, for example. The opening 22B has an opening corresponding to each cable of the second wiring 18B. Each cable is arranged so as to pass through each opening, and each opening is provided with a seal member that suppresses intrusion of water or the like from a gap between the housing 20 and the cable.

  The drive unit 10 can be attached to the bracket 100 with bolts 32. The bracket 100 includes an upper wall 102 that covers the drive unit 10 from above, and a pair of flanges 104A and 104B that extend from the upper wall 102 so as to be adjacent to the first attachment portion 28 and the second attachment portion 30 in the crankshaft direction CA. Is provided. The bracket 100 may not have the upper wall 102. 104A of 1st flanges and the 2nd flange 104B may be divided and formed in the direction where each flange extends.

  The upper wall 102 has a first hole 102A and a second hole 102B. The first hole 102A and the second hole 102B are located at an interval in the front-rear direction of the frame. The first hole 102A is continuous with the internal space of the down tube. The second hole 102B is continuous with the internal space of the seat tube.

  The first flange 104A is formed with through holes 106 at positions facing the three first mounting portions 28 in the crankshaft direction CA, and the second flange 104B has three first holes in the crankshaft direction CA. Through holes (not shown) are respectively formed at locations facing the two attachment portions 30. When there are a plurality of first attachment portions 28, a plurality of pairs of first flanges 104 </ b> A may be provided so as to be separated in a direction in which the plurality of first attachment portions 28 are separated. When a plurality of first flanges 104A are provided, a through hole is formed in each first flange 104A. When there are a plurality of second attachment portions 30, a plurality of second flanges 104 </ b> B may be provided apart in the direction in which the plurality of second attachment portions 30 are separated. When a plurality of second flanges 104B are provided, a through hole is formed in each second flange 104B.

  As shown in FIG. 2, the first flange 104A covers each first mounting portion 28 from one outer side in the crankshaft direction CA, and the second flange 104B (see FIG. 1) is the other in the crankshaft direction CA. The second attachment portion 30 is covered from the outside of the. That is, the first attachment portion 28 and the second attachment portion 30 are disposed between the first flange 104A and the second flange 104B. The outer end surface of the first flange 104A in the crankshaft direction CA is preferably positioned closer to the center of the housing 20 in the crankshaft direction CA than the outer surface of the housing 20 in the crankshaft direction CA. The outer end surface of the second flange 104B in the crankshaft direction CA is preferably located closer to the center of the housing 20 in the crankshaft direction CA than the outer surface of the housing 20 in the crankshaft direction CA.

  In a state where the drive unit 10 is attached to the bracket 100, the second wiring 18B drawn from the opening 22B passes between the first attachment portion 28 and the second attachment portion 30 in the crankshaft direction CA. Can be arranged as follows. The second wiring 18B extends in the circumferential direction around the crankshaft direction CA of the housing 20, and passes from the space formed between the bracket 100 and the drive unit 10 to the outside through the second hole 102B of the bracket 100. Pulled out. The second wiring 18B may be arranged so as to pass through the internal space of the frame.

  A third wiring 18 </ b> C may be disposed in the space between the bracket 100 and the housing 20. The third wiring 18C is disposed in a space between the bracket 100 and the housing 20 through, for example, the first hole 102A and the second hole 102B. Third wiring 18C includes, for example, a brake cable, a transmission cable, and the like. Similar to the second wiring 18B, the third wiring 18C is disposed between the first mounting portion 28 and the second mounting portion 30 in the crankshaft direction CA, and is arranged around the crankshaft direction CA of the housing 20. It extends in the circumferential direction.

  As shown in FIG. 3, the first attachment portion 28 has an insertion hole 28 </ b> A that penetrates the first attachment portion 28 in the crankshaft direction CA. It is preferable that a knurled 28B extending in the crankshaft direction CA is formed in the insertion hole 28A.

  The drive unit 10 includes an adjustment member 34 that is at least partially disposed in a gap formed between the first attachment portion 28 and the bracket 100 in a state where the first attachment portion 28 is attached to the bracket 100. .

  The adjustment member 34 is press-fitted into the insertion hole 28 </ b> A of the first attachment portion 28. The adjustment member 34 may be made of metal or synthetic resin. The shape of the adjustment member 34 is preferably a cylindrical shape, but the outer shape of the cross section in the axial direction may be a polygonal shape as long as it is cylindrical. The adjustment member 34 has a hole 36 into which the bolt 32 can be inserted. A female thread 36 </ b> A that can be connected to the bolt 32 is formed in the hole 36 of the adjustment member 34. A suppressing portion 38 that suppresses the movement of the adjusting member 34 relative to the first attachment portion 28 is provided on the outer peripheral portion of the adjusting member 34. The suppressing portion 38 includes a knurl 38 </ b> A formed on the outer peripheral portion of the adjusting member 34. The knurl 38A extends in the crankshaft direction CA. Thereby, when the adjustment member 34 is press-fitted into the insertion hole 28 </ b> A, the rotation of the adjustment member 34 around the axis can be suppressed.

  A slit 40 extending in the circumferential direction of the adjusting member 34 is formed on the outer peripheral portion around the axis of the adjusting member 34. The slit 40 penetrates from the outer periphery to the inner periphery of the adjustment member 34 in the radial direction of the adjustment member 34. The adjustment member 34 includes a locking member 42 disposed in the slit 40. The locking member 42 is formed of a material whose hardness is lower than that of the adjusting member 34. The locking member 42 is made of resin, for example. The shape of the locking member 42 is formed so as to close the slit 40, and is formed in an arc shape, for example. The locking member 42 may be press-fitted into the slit 40 of the adjusting member 34 or may be bonded to the adjusting member 34 with an adhesive. The locking member 42 is preferably made of a deformable material. The thickness of the locking member 42 in the radial direction of the adjustment member 34 is formed to be larger than the depth of the slit in the radial direction of the adjustment member 34.

  As shown in FIG. 4, the adjustment member 34 extends from the first mounting portion 28 in the crankshaft direction CA so that the end surface in the crankshaft direction CA is in contact with the first flange 104A of the bracket 100 (see FIG. 5 together). It protrudes. That is, at least a portion of the adjustment member 34 is disposed on the opposite side of the first attachment portion 28 from the second attachment portion 30 (see FIG. 1) in the crankshaft direction CA.

  In a state where the adjustment member 34 is press-fitted into the insertion hole 28A of the first mounting portion 28, the outer peripheral surface 42A of the locking member 42 is in contact with the insertion hole 28A. The inner peripheral surface 42B of the locking member 42 is disposed at the same position in the radial direction of the female screw 36A of the adjusting member 34 and the adjusting member 34 or slightly protrudes from the inner peripheral surface of the female screw 36A.

  As shown in FIG. 5, the first attachment portion 28 can be attached to the bracket 100 by a bolt 32 inserted into the hole 36 of the adjustment member 34. Specifically, the bolt 32 is in a state in which the end surface of the adjustment member 34 in the crankshaft direction CA is in contact with the first flange 104A of the bracket 100, or the end surface of the adjustment member 34 in the crankshaft direction CA and the first flange 104A. The gap formed between the two is screwed into the adjustment member 34 in a minute state. At this time, the bolt 32 is inserted into the through hole 106 of the first flange 104A. The bolt head 32 </ b> A of the bolt 32 is accommodated in the accommodating portion 108, which is a portion expanded in diameter in the through hole 106. The male screw 32B of the bolt 32 is screwed into the female screw 36A of the adjustment member 34. Further, the male screw 32B bites into the inner peripheral surface 42B of the locking member 42. That is, the male screw 32B bites into the locking member 42 with the inner peripheral surface 42B of the locking member 42 being plastically deformed. As described above, the material of the locking member 42 may be any material as long as the male screw 32B of the bolt 32 can bite into the locking member 42, and may be made of, for example, aluminum other than the resin.

Next, a procedure for attaching the drive unit 10 to the bracket 100 will be described with reference to FIGS.
7 to 9 are schematic diagrams showing the relationship between the drive unit 10 or the drive unit 10 and the bracket 100. FIG. Also, the shapes of the drive unit 10 and the bracket 100 shown in FIGS. 7 to 9 are shown to be different from the shapes of the drive unit 10 and the bracket 100 in FIGS. Further, the gap G1 between the drive unit 10 and the bracket 100 shown in FIG. 7 and the protrusion amount PD1 from the first mounting portion 28 of the adjustment member 34 shown in FIG. 4 and compared with FIG.

  As shown in FIG. 6, the mounting procedure of the drive unit 10 to the bracket 100 includes the first step S1, the second step S2, the third step S3, the fourth step S4, and the fifth step S5. including.

  As shown in FIG. 7, in the first step S <b> 1, the drive unit 10 is temporarily placed on the bracket 100. Specifically, in the crankshaft direction CA, the drive unit in a state before the adjustment member 34 (see FIG. 8) is attached to the bracket 100 so that the three second attachment portions 30 are in contact with the second flange 104B. It is arranged in a state of being brought to one side.

  In the second step S2, as shown in FIG. 7, a gap G1 formed between each first mounting portion 28 and the first flange 104A is measured. After the gap G1 is measured, the drive unit in a state before the adjustment member 34 is attached is taken out from the bracket 100.

  As shown in FIG. 8, in the third step S <b> 3, the adjustment member 34 is attached to each first attachment portion 28. The adjustment member 34 attached to each first attachment portion 28 is adjusted so that the protrusion amount PD1 from each first attachment portion 28 in the crankshaft direction CA becomes a gap G1 (see FIG. 7). The protrusion amount PD1 may be smaller than the gap G1 as long as it is larger than “0” and not larger than the gap G1.

  As shown in FIG. 9, in the fourth step S <b> 4, the drive unit 10 is disposed on the bracket 100. At this time, the second mounting portions 30 of the drive unit 10 are in contact with the second flange 104B, and the adjustment members 34 are in contact with the first flange 104A. Each adjustment member 34 may be disposed with a slight gap with respect to the first flange 104A in the crankshaft direction CA.

As shown in FIG. 9, in the fifth step S <b> 5, each second attachment portion 30 is attached to the second flange 104 </ b> B with three bolts 32, and each first bolt is provided with the other three bolts 32. The attachment portion 28 is attached to the first flange 104A.
Here, the adjustment member 34 is attached to the first attachment portion 28 during assembly, but the adjustment member 34 may be attached to the first attachment portion 28 in advance. For example, the adjustment member 34 is inserted in half in the axial direction. When the drive unit 10 is attached to the bracket 100, the distance A between the first flange 104A and the second flange 104B is measured, the end surface of the adjustment member 34 opposite to the second attachment portion 30, and the second attachment The adjustment member 34 is press-fitted into the first mounting portion 28 so that the distance B between the end 30 of the portion 30 and the end surface opposite to the first mounting portion 28 is equal to or slightly smaller than the distance A. . Thereafter, the drive unit 10 can be attached to the bracket 100 by the fourth step S4 and the fifth step S5.

The operation and effect of the drive unit 10 will be described.
The adjustment member 34 attached to each first attachment portion 28 protrudes from each first attachment portion 28 toward the first flange 104A in the crankshaft direction CA. For this reason, in the state where the second attachment portion 30 is in contact with the second flange 104B, the gap G1 formed between the first attachment portion 28 and the first flange 104A is filled with the adjustment member 34. By adjusting the amount of protrusion of the adjustment member 34 from the first attachment portion 28, the gap G <b> 1 between the first attachment portion 28 and the first flange 104 </ b> A can be appropriately filled with the adjustment member 34. Therefore, when the drive unit 10 is attached to the bracket 100, the tightening force by the bolt 32 can be increased, and the drive unit 10 is suppressed from rattling with respect to the bracket 100 in the crankshaft direction CA.

In addition to the above effects, the drive unit 10 of the present embodiment has the following effects, for example.
(1) A knurling 38 </ b> A is formed on the outer peripheral portion of the adjustment member 34, and a knurling 28 </ b> B is formed in the insertion hole 28 </ b> A of the first mounting portion 28. According to this structure, it is suppressed that the adjustment member 34 rotates with respect to the 1st attaching part 28 centering on the central axis. For this reason, when the bolt 32 is screwed into the female screw 36 </ b> A of the adjustment member 34, the adjustment member 34 is prevented from rotating together with the bolt 32. For this reason, the operation of screwing the bolt 32 into the adjustment member 34 is facilitated.

  (2) The adjustment member 34 is press-fitted into the insertion hole 28 </ b> A of the first attachment portion 28. For this reason, it is suppressed that the adjustment member 34 moves with respect to the 1st attaching part 28 in the crankshaft direction CA.

  (3) The adjustment member 34 has a hole 36 into which the bolt 32 can be inserted. The hole 36 is formed with a female screw 36A to which the bolt 32 can be connected. According to this configuration, the drive unit 10 can be attached to the bracket 100 by connecting the male screw 32 </ b> B of the bolt 32 to the female screw 36 </ b> A of the adjustment member 34.

  (4) The drive unit 10 includes a first attachment portion 28 and a second attachment portion 30 that can be attached to each of the pair of flanges 104A and 104B of the bracket 100 by the bolt 32. For this reason, the drive unit 10 can be stably held by the bracket 100 as compared with a configuration in which the drive unit 10 is attached to only one of the pair of flanges 104A and 104B.

  (5) A loosening prevention member 42 is attached to the adjustment member 34. According to this configuration, the male screw 32 </ b> B of the bolt 32 bites into the locking member 42, so that the loosening of the male screw 32 </ b> B of the bolt 32 with respect to the female screw 36 </ b> A of the adjustment member 34 is suppressed.

(Second Embodiment)
With reference to FIG. 10 and FIG. 11, the structure of the drive unit 10 which is an example of the bicycle component of 2nd Embodiment, and the attachment structure of the drive unit 10 and the bracket 100 are demonstrated. The drive unit 10 of this embodiment has the same configuration as that of the drive unit 10 of the first embodiment, except for the following two points as compared to the drive unit 10 of the first embodiment. The first point is that the shape of the first mounting portion is different. The drive unit 10 includes a first attachment portion 29 instead of the first attachment portion 28. The second point is that an adjusting member 44 is used instead of the adjusting member 34. Hereinafter, differences from the drive unit 10 of the first embodiment will be described in detail, and the same reference numerals are used for the same components as those of the drive unit 10 and the bracket 100 of the first embodiment, and description thereof will be omitted.

  As shown in FIG. 10, the first attachment portion 29 is provided in the housing 20 at the same position as the first attachment portion 28 (see FIG. 1). The first attachment portion 29 includes a support portion 46 having an external thread 46A on the outer periphery. The first attachment portion 29 further includes a main body portion 29 </ b> A that protrudes outward from the side wall 22 </ b> A of the housing main body 22. The main body portion 29 </ b> A is formed in the same shape as the first attachment portion 28. The support portion 46 is formed integrally with the main body portion 29A, and extends from the main body portion 29A toward the first flange 104A of the bracket 100. That is, the support portion 46 extends toward the side opposite to the second attachment portion 30. The support portion 46 is formed separately from the first attachment portion 29 and may be fixed to a hole (not shown) formed in the main body portion 29A, and is welded, joined, or bonded to the main body portion 29A. It may be fixed.

  The first attachment portion 29 has a hole 48 into which the bolt 32 can be inserted. The hole 48 passes through the main body portion 29A and the support portion 46 in the crankshaft direction CA. A female screw 48 </ b> A that can be connected to the bolt 32 is formed in the hole 48. The adjustment member 44 is coupled to the male screw 46 </ b> A of the support portion 46. The adjusting member 44 is formed with a hole 50 penetrating in the crankshaft direction CA. In the hole 50, a female screw 52 that is connected to the male screw 46A is formed. As described above, the adjusting member is a nut having the female screw 52.

  As shown in FIG. 11, the adjustment member 44 can change the amount of protrusion from the first attachment portion 29 by changing the screwing amount of the adjustment member 44 with respect to the support portion 46. Supported by The adjustment member 44 shown in FIG. 11 protrudes toward the first flange 104 </ b> A with respect to the support portion 46 so as to contact the first flange 104 </ b> A of the bracket 100.

  The bolt 32 is screwed into the hole 48 of the first attachment portion 29 in a state where the adjustment member 44 is in contact with the first flange 104A. Thereby, the external thread 32B of the bolt 32 and the internal thread 48A of the hole 48 are connected. As described above, the first attachment portion 29 can be attached to the bracket 100 by the bolt 32 inserted into the hole 48. The adjustment of the protrusion amount PD2 from the support portion 46 of the adjustment member 44 is the same as the procedure for attaching the drive unit 10 to the bracket 100 in the first embodiment. The adjustment member 44 is attached to the support portion 46 so as to coincide with the gap G2 between the first attachment portion 29 and the first flange 104A.

In addition to the effect according to the effect (4) of the first embodiment, the drive unit 10 of this embodiment has the following effects, for example.
(6) The adjustment member 44 attached to the support portion 46 of each first attachment portion 29 protrudes from each support portion 46 toward the first flange 104A in the crankshaft direction CA. For this reason, in the state where the second attachment portion 30 is in contact with the second flange 104B, the gap G2 formed between the first attachment portion 29 and the first flange 104A is filled with the adjustment member 44. Therefore, when the drive unit 10 is attached to the bracket 100, the tightening force by the bolt 32 can be increased, and the drive unit 10 is suppressed from rattling with respect to the bracket 100 in the crankshaft direction CA.

  (7) The adjustment member 44 is screwed into the support portion 46 so that the female screw 52 of the adjustment member 44 is connected to the male screw 46A of the support portion 46 of the first attachment portion 29. According to this configuration, the amount of protrusion of the adjustment member 44 from the first attachment portion 29 can be easily adjusted by changing the screwing amount of the adjustment member 44.

  (8) Since the hole 48 of the first mounting portion 29 is formed with a female screw 48A to which the male screw 32B of the bolt 32 can be connected, and it is not necessary to prepare a mounting nut separately, the first mounting portion 29 is easily attached to the first flange 104A.

(Third embodiment)
With reference to FIGS. 12-16, the structure of the drive unit 10 which is an example of the component for bicycles of 3rd Embodiment, and the attachment structure of the drive unit 10 and the bracket 100 are demonstrated. The drive unit 10 of this embodiment has the same configuration as that of the drive unit 10 of the first embodiment, except for the following two points as compared to the drive unit 10 of the first embodiment. The first point includes a first attachment portion 31 instead of the first attachment portion 28. The second point includes an adjustment member 54 instead of the adjustment member 34. The adjustment member 54 is a washer. In this embodiment, a tapered washer is used as the washer. Hereinafter, differences from the drive unit 10 of the first embodiment will be described in detail, and the same reference numerals are used for the same components as those of the drive unit 10 and the bracket 100 of the first embodiment, and description thereof will be omitted.

As shown in FIG. 12, the first attachment portion 31 is provided in the housing 20 at the same position as the first attachment portion 28 (see FIG. 1). In the crankshaft direction CA, the adjustment member 54 is sandwiched between the first attachment portion 31 and the first flange 104A. For example, the adjustment member 54 may be made of metal, resin, or an elastic member such as rubber.
The adjustment member 54 has a first inclined surface 56 that comes into contact with the first attachment portion 31. The adjusting member 54 is formed in a thin plate shape, and further includes a first flat surface 58 located on the opposite side of the first inclined surface 56 in the thickness direction. The first inclined surface 56 is inclined with respect to the first plane 58. The adjustment member 54 has a tapered shape. The thickness direction of the adjustment member 54 is parallel to the crankshaft direction CA in a state where the adjustment member 54 is attached between the drive unit 10 and the housing 20.

  The bolt 32 can be inserted into the adjustment member 54. Specifically, the adjustment member 54 has a long hole 60 extending in the inclined direction. The long hole 60 passes through the first inclined surface 56 and the first flat surface 58 in the thickness direction. In this embodiment, the adjustment member 54 is dimensioned such that the direction in which the long hole 60 extends is the longitudinal direction.

  As shown by the hatching in FIG. 13, it is preferable that the first inclined surface 56 is processed to increase the frictional resistance with the first attachment portion 31 (see FIG. 12). As a process for increasing the frictional resistance, for example, the first inclined surface 56 is subjected to shot blasting. In addition, although it is preferable that the process which raises a frictional resistance is performed over the whole 1st inclined surface 56, even if the process which raises a frictional resistance is given only to a part of 1st inclined surface 56, it is given. Good.

  As shown in FIG. 12, the first attachment portion 31 has a hole 62 into which the bolt 32 can be inserted, and can be attached to the bracket 100 by the bolt 32 inserted into the hole 62. The hole 62 passes through the first attachment portion 31 in the crankshaft direction CA. An internal thread 62 </ b> A that can be connected to the bolt 32 is formed in the hole 62 of the first attachment portion 31.

  As shown by the hatching in FIG. 12, the first attachment portion 31 has a second inclined surface 64 that is in surface contact with the first inclined surface 56 of the adjustment member 54. The second inclined surface 64 is inclined with respect to a surface perpendicular to the crankshaft direction CA. The second inclined surface 64 is preferably inclined with respect to a predetermined axis extending in the direction from the proximal end portion to the distal end portion of the first attachment portion 31. It is preferable that the second inclined surface 64 is processed to increase the frictional resistance between the second inclined surface 64 and the first inclined surface 56 of the adjusting member 54. As a process for increasing the frictional resistance, for example, the second inclined surface 64 is subjected to shot blasting. The processing for increasing the frictional resistance is not limited to being performed over the entire surface of the second inclined surface 64, and may be performed only on a part of the second inclined surface 64.

  As shown in FIG. 14, the first inclined surface 56 of the adjustment member 54 faces the second inclined surface 64 of the first mounting portion 31, and the inclination direction of the first inclined surface 56 and the first It arrange | positions between the 1st attaching part 31 and 104 A of 1st flanges so that the inclination direction of the 2nd inclined surface 64 of the attaching part 31 may become parallel. The first inclined surface 56 and the second inclined surface 64 are in surface contact with each other. In a state where the adjustment member 54 is sandwiched between the first mounting portion 31 and the first flange 104 </ b> A, the bolt 32 is screwed into the hole 62 of the first mounting portion 31. The bolt 32 screwed into the hole 62 of the first attachment portion 31 is inserted into the through hole 106 of the first flange 104A and the long hole 60 of the adjustment member 54. The inclination angle of the second inclined surface 64 with respect to the axis of the crankshaft is preferably selected to be equal to the inclination angle of the first inclined surface 56 with respect to the first plane 58.

  As shown in FIG. 15, the mounting procedure of the drive unit 10 to the bracket 100 includes a first step S11, a second step S12, and a third step S13. As shown in FIG. 16, in the first step S <b> 1, the drive unit 10 is disposed on the bracket 100. Specifically, the drive unit 10 is disposed in a state of being moved toward one side in the crankshaft direction CA so that the second attachment portion 30 contacts the second flange 104B of the bracket 100. At this time, a gap G3 is formed between the first attachment portion 31 and the first flange 104A in the crankshaft direction CA.

  Then, in the second step S12, in the circumferential direction around the crankshaft direction CA of the housing 20, adjustment is made to each of the gaps G3 between the first mounting portion 31 and the first flange 104A that are both ends in the front-rear direction of the frame. The member 54 is inserted. In addition, the adjustment member 54 should just be inserted in each of the clearance gap G3 between two of the three 1st attachment parts 31, and the 1st flange 104A, and two pieces in which the adjustment member 34 is inserted. The selection of the first attachment portion 31 is an arbitrary setting item. Of course, the adjustment member 54 may be inserted between each first attachment portion 31 and the first flange 104A. In the third step S13, the first mounting portion 31 and the first flange 104A are fixed by the three bolts 32, and the second mounting portion 30 and the second flange 104B are fixed by the other three bolts 32. Fixed. Each time the adjusting member 54 is inserted between the first attachment portion 31 and the first flange 104A without separating the second step S12 and the third step S13, the first attachment is performed by the bolt 32. The portion 31 and the first flange 104A may be fixed.

The drive unit 10 of this embodiment has the following effects in addition to the effects according to the effects (4) of the first embodiment and (8) of the second embodiment, for example.
(9) The drive unit 10 includes an adjustment member 54 that is disposed in a gap G3 formed between the first mounting portion 31 and the first flange 104A. Since the adjustment member 54 contacts both the first attachment portion 31 and the first flange 104A, when the drive unit 10 is attached to the bracket 100, the tightening force by the bolt 32 can be increased, and the drive unit in the crankshaft direction CA can be increased. 10 is suppressed from rattling with respect to the bracket 100.

  (10) Since the insertion amount of the adjustment member 54 can be changed according to the size of the gap G3 between the first mounting portion 31 and the first flange 104A, adjustment for filling the gap G3 is easily performed. be able to.

  (11) The first inclined surface 56 of the adjustment member 54 is subjected to shot blasting as a process for increasing the frictional resistance. For this reason, the frictional resistance between the 2nd inclined surface 64 of the 1st attaching part 31 which is in surface contact with the 1st inclined surface 56 becomes high. Accordingly, when the bolt 32 is tightened and after the bolt 32 is tightened, the adjustment member 54 is difficult to move with respect to the first attachment portion 31.

  (12) The second inclined surface 64 of the first mounting portion 31 is subjected to shot blasting as a process for increasing the frictional resistance. For this reason, the frictional resistance between the 2nd inclined surface 64 and the 1st inclined surface 56 of the adjustment member 54 becomes higher. Therefore, when the bolt 32 is tightened and after the bolt 32 is tightened, the adjustment member 54 becomes more difficult to move with respect to the first attachment portion 31.

(Fourth embodiment)
With reference to FIGS. 17-21, the structure of the drive unit 10 which is an example of the component for bicycles of 4th Embodiment, and the attachment structure of the drive unit 10 and the bracket 100 are demonstrated. The drive unit 10 of this embodiment has the same configuration as that of the drive unit 10 of the first embodiment, except for the following two points as compared to the drive unit 10 of the first embodiment. The first point includes an adjustment member 84 instead of the adjustment member 34. The second point includes a first attachment portion 33 instead of the first attachment portion 28. Hereinafter, differences from the drive unit 10 of the first embodiment will be described in detail, and the same reference numerals are used for the same components as those of the drive unit 10 and the bracket 100 of the first embodiment, and description thereof will be omitted.

  As shown in FIG. 17, the adjustment member 84 includes a holding portion 86 held by the first attachment portion 33 and a flange portion 88 provided at an end portion of the holding portion 86. The holding portion 86 and the flange portion 88 are preferably integrally formed, but may be configured such that the holding portion 86 and the flange portion 88 that are individually formed are connected to each other. The adjustment member 84 may be made of metal or synthetic resin.

  The holding part 86 includes a hole 90 into which the bolt 32 can be inserted. A female screw 90 </ b> A that can be connected to the bolt 32 is formed in the hole 90. The shape of the holding portion 86 is preferably cylindrical, but if it is cylindrical, the shape of the cross section perpendicular to the axial direction may be polygonal. A suppressing portion 86 </ b> A that suppresses the movement of the adjustment member 84 relative to the first attachment portion 33 is provided on the outer peripheral portion of the holding portion 86. The suppressing portion 86 </ b> A includes a knurl 86 </ b> B formed on the outer peripheral portion of the adjusting member 84. The knurl 86B extends in the crankshaft direction CA.

  The outer shape of the flange portion 88 is preferably circular when viewed from the axial direction, but may be polygonal. In addition, the flange portion 88 is preferably formed over the entire circumference of the holding portion 86, but may be formed only in a part of the holding portion 86 in the circumferential direction.

  As shown in FIGS. 17 and 18, the first attachment portion 33 includes an insertion hole 33 </ b> A into which the holding portion 86 of the adjustment member 84 is press-fitted. The insertion hole 33A includes a first portion 33B into which the adjustment member 84 is press-fitted, and a second portion 33C having an inner diameter smaller than the inner diameter of the first portion 33B.

  The first portion 33B is preferably formed with a knurl 33D extending in the crankshaft direction CA. When the adjustment member 84 is press-fitted into the first portion 33B, the knurl 33D of the first portion 33B and the knurl 86B of the holding portion 86 are engaged with each other, whereby rotation of the adjustment member 84 around the axis can be suppressed.

  The second portion 33C communicates with a portion of the first portion 33B opposite to the opening 33E into which the adjustment member 84 is inserted. The second portion 33C is provided with an internal thread 33F. The inner diameter of the second portion 33 </ b> C is smaller than the inner diameter of the hole 90 of the adjustment member 84. When viewed from the axial direction of the bolt 32 (see FIG. 19), the internal thread 33F is provided within the range of the hole of the first portion 33B. Preferably, when viewed from the axial direction of the bolt 32, the internal thread 33 </ b> F is provided within the range of the hole 90 of the adjustment member 84.

  The first attachment portion 33 further includes a recess 33G that can accommodate the flange portion 88 of the adjustment member 84. The recess 33G is formed around the opening 33E of the insertion hole 33A. The depth dimension of the recess 33G is preferably equal to or greater than the thickness dimension of the flange portion 88, but the depth dimension of the recess 33G is an arbitrary setting item.

FIG. 19 shows a state in which the drive unit 10 is attached to the bracket 100 by the bolt 32 inserted into the hole 90 of the adjustment member 84.
The flange portion 88 of the adjustment member 84 protrudes from the first attachment portion 33 in the crankshaft direction CA so that the end surface in the crankshaft direction CA is in contact with the first flange 104A of the bracket 100. That is, the flange part 88 is arrange | positioned in the clearance gap G4 formed between the 1st attaching part 33 and the bracket 100 (frame).

  By screwing the bolt 32 into the adjustment member 84, the end surface of the flange portion 88 of the adjustment member 84 in the crankshaft direction CA comes into contact with the first flange 104 </ b> A of the bracket 100. At this time, the male screw 32B of the bolt 32 is screwed into the female screw 90A of the adjusting member 84.

  A procedure for attaching the drive unit 10 to the bracket 100 will be described with reference to FIGS. In addition, each component of the drive unit 10 and the bracket 100 described with reference to FIG. 20 indicates each component of the drive unit 10 and the bracket 100 of FIGS.

  The mounting procedure of the drive unit 10 according to the present embodiment to the bracket 100 omits the steps S1 to S3 with respect to the mounting procedure of the drive unit 10 according to the first embodiment to the bracket 100, and each first mounting portion 33. In addition, the mounting order of the bolts 32 to the second mounting portions 30 is clarified. The adjustment member 84 is press-fitted into the first attachment portion 33 in advance, and the flange portion 88 is in contact with the first attachment portion 33.

  As shown in FIG. 20, after the drive unit 10 is arranged on the bracket 100 in the first step S21, each second mounting portion 30 and the second flange 104B (both see FIG. 1) are connected in the second step S22. Install with bolts 32. Then, in the third step S <b> 23, the first attachment portions 33 and the first flange 104 </ b> A are attached with the bolts 32. When there is a gap between the first attachment portion 33 and the first flange 104A, in the third step S23, the adjustment member 84 is pulled out from the first attachment portion 33, and the adjustment member 84 is moved to the first flange 104A. Close contact with.

  When the drive unit 10 mounted on a bicycle (not shown) is transferred to another bicycle (not shown), the protrusion PD4 of the adjustment member 84 from each first mounting portion 33 is large, and is inserted into the bracket 100 of another bicycle. There are cases where it is impossible. In such a case, as shown in FIG. 21, the amount of protrusion PD4 of the adjusting member 84 is reduced by using an adjusting bolt 92 having an outer diameter smaller than the inner diameter of the hole 90 of the adjusting member 84. Specifically, the adjustment bolt 92 is inserted into the hole 90 of the adjustment member 84 and connected to the female screw 33F of the second portion 33C. Then, when the adjustment bolt 92 is screwed into the second portion 33C, the bolt head 92A of the adjustment bolt 92 comes into contact with the flange portion 88 of the adjustment member 84, so that the protrusion amount PD4 of the adjustment member 84 is reduced. 84 is pushed in.

In addition to the effects (1) to (4) of the first embodiment, the drive unit 10 of this embodiment has the following effects, for example.
(13) Since the flange portion 88 of the adjustment member 84 contacts the first flange 104A of the bracket 100, the contact area between the adjustment member 84 and the first flange 104A is larger than that of the adjustment member in which the flange portion 88 is omitted. Can be bigger. For this reason, the surface pressure applied to the bracket 100 can be suppressed.

  (14) By providing the first mounting portion 33 with the concave portion 33G in which the flange portion 88 can be accommodated, the amount of protrusion PD4 of the adjustment member 84 from the first mounting portion 33 is set to be smaller than the thickness dimension of the flange portion 88. It can be adjusted within a small range.

  (15) The adjustment bolt 92 is inserted into the hole 90 of the adjustment member 84 and then screwed into the female screw 33F of the second portion 33C of the first attachment portion 33, whereby the first attachment portion of the adjustment member 84 is obtained. The protrusion amount PD4 from 33 can be reduced.

  (16) After the second mounting portions 30 and the second flanges 104B are fixed by the bolts 32, the first mounting portions 33 and the first flanges 104A are fixed by the bolts 32, thereby adjusting members. The generation of moment at 84 is suppressed. Accordingly, the adjustment member 84 is suppressed from being pressed against the insertion hole 33A in the radial direction of the insertion hole 33A.

(Modification)
The above description of each embodiment is an example of the form that the bicycle component according to the present invention can take, and is not intended to limit the form. The bicycle component according to the present invention can take a form in which, for example, the modifications of the above-described embodiments described below and at least two modifications not contradicting each other are combined.

  In the first embodiment, as shown in FIG. 22, the first attachment portion 28 of the drive unit 10 may be attached to the first flange 104 </ b> A of the bracket 100 by the bolt 32 and the nut 66. In this case, the adjustment member 34 is formed with a through hole 68 from which the female screw 36A is omitted. The nut 66 is disposed on the side opposite to the first flange 104 </ b> A with respect to the first mounting portion 28 in the crankshaft direction CA, and contacts the first mounting portion 28. The second embodiment to the fourth embodiment can also be changed to a structure for attaching the first attachment portion 28 to the bracket 100 by the bolt 32 and the nut 66.

  In the first embodiment, as a mechanism for suppressing the adjustment member 34 from rotating with respect to the first mounting portion 28 (hereinafter referred to as “rotation suppression mechanism”), a key groove and a key member fitted in the key groove; May be configured. For example, as shown in FIG. 23, the rotation suppression mechanism includes a recess 28 </ b> C formed in the insertion hole 28 </ b> A of the first attachment portion 28, and an adjustment member that faces the recess 28 </ b> C in a plane direction perpendicular to the crankshaft direction CA. 34 is formed of a recess 70 formed in the outer peripheral portion 34 and a key member 72 fitted in a space formed by the recesses 28 </ b> C and 70. In this case, the knurl 38A of the adjustment member 34 and the knurl 28B of the first attachment portion 28 (both see FIG. 3) may be omitted. The recess 70 is preferably formed at a position different from the slit 40 (see FIG. 3) of the adjustment member 34 in the circumferential direction of the adjustment member 34. The recess 70 and the key member 72 constitute a suppressing portion that suppresses the movement of the adjustment member with respect to the first attachment portion 28. Note that the fourth embodiment can be changed to the configuration of the space formed by the recesses 28C and 70 and the key member 72 fitted in the space.

-In the said 1st Embodiment and each modification of the said 1st Embodiment, the dimension of the locking member 42 in the circumferential direction of the adjusting member 34 and the locking member 42 in the axial direction (crankshaft direction CA) of the adjusting member 34 Dimensions are optional settings.
-In the said 1st Embodiment and each modification of the said 1st Embodiment, the hole of the adjustment member 34 does not need to penetrate the adjustment member 34 in crankshaft direction CA.
In the first embodiment and each modification of the first embodiment, the locking member 42 may be omitted from the adjustment member 34. In this case, the slit 40 is omitted from the adjustment member 34.
-In the said 1st Embodiment and each modification of the said 1st Embodiment, the knurl 28B may be abbreviate | omitted from the insertion hole 28A of the 1st attaching part 28. FIG.
In the fourth embodiment, the knurl 33D may be omitted from the first portion 33B, the knurl 86B on the outer peripheral portion of the adjustment member 84 may be omitted, and both knurls 33D and 86B may be omitted. May be.

  -In the said 2nd Embodiment, the structure by which the adjustment member was screwed inside the support part 46 of the 1st attaching part 29 may be sufficient. For example, as shown in FIG. 24, the diameter of the hole 48 including the support portion 46 of the first attachment portion 29 is expanded, and then the adjustment member 74 is screwed into the female screw 48 </ b> A of the first attachment portion 29. The shape of the adjustment member 74 is, for example, a cylindrical shape. A male screw 76 connected to the female screw 48 </ b> A is formed on the outer peripheral portion of the adjustment member 74, and a hole 78 into which the bolt 32 can be inserted is formed on the inner peripheral portion of the adjustment member 74. In the hole 78, an internal thread 78A to which the bolt 32 can be connected is formed. The bolt 32 is screwed into the hole 78 of the adjustment member 74. The external thread formed on the outer peripheral portion of the first attachment portion 29 is omitted.

In the modification shown in FIG. 24, the support part 46 may be omitted.
In the second embodiment and the modification shown in FIG. 24, the main body portion 29A and the support portion 46 of the first attachment portion 29 may be formed separately. In this case, for example, the male screw 46A of the support portion 46 is connected to the female screw 48A of the hole 48 of the main body portion 29A. The bolt 32 is connected to a female screw (not shown) formed in the hole of the support portion 46. Thereby, the first attachment portion 29 is attached to the first flange 104A.

  In the third embodiment, as shown in FIG. 25, instead of the adjustment member 54, a washer 80 that does not have the first inclined surface 56 is formed between the first mounting portion 31 and the first flange 104A. You may arrange | position in the clearance gap G3 between. The washer 80 is made of, for example, metal or resin.

  In the third embodiment, the second inclined surface 64 may be omitted from the first attachment portion 31. When the 2nd inclined surface 64 is abbreviate | omitted from the 1st attaching part 31, it is preferable to use a general washer as the adjustment member 44 rather than using a taper washer. A general washer is a washer in which both end surfaces in the axial direction of the hole are parallel. In this case, a plurality of washers 80 may be stacked and disposed between the first attachment portion 31 and the bracket 100. The thickness of the plurality of washers may be different from each other.

  In the third embodiment and the modification of FIG. 25, the adjustment member 54 may include a plurality of tapered washers, or a tapered washer and a general washer. Each of the taper washer and the general washer may be a plurality of sheets.

  An elastic member such as rubber is pasted on at least one of the first inclined surface 56 of the adjustment member 54 and the second inclined surface 64 of the first attachment portion 31 in the third embodiment as a process for increasing the frictional resistance. May be attached.

  In the third embodiment, the process for increasing the frictional resistance may be omitted from at least one of the second inclined surface 64 of the first attachment portion 31 and the first inclined surface 56 of the adjustment member 54.

  In the third embodiment and the modification of FIG. 25, the shapes of the adjustment member 54 and the washer 80 viewed from the crankshaft direction CA are arbitrary setting items. For example, the shape of the adjusting member 54 and the washer 80 viewed from the crankshaft direction CA is an elliptical shape.

  In the second and third embodiments and the modifications of the second and third embodiments, the holes 48 and 62 of the first attachment portions 29 and 31 are the first attachment portions in the crankshaft direction CA. 29 and 31 may not be penetrated.

  In each of the above embodiments and each of the above modifications, the drive unit 10 includes the adjustment members 34, 44, 54, 74, 84, and the washer 80 of the plurality of first attachment portions 28, 29, 31, and 33. The structure provided in at least one may be sufficient.

In each of the above embodiments and each of the above modifications, the housing body 22 of the drive unit 10 and the first mounting portions 28, 29, 31, and 33 are individually formed, and the housing body 22 is formed by welding, joining, bonding, or the like. It may be fixed to.
In each of the above-described embodiments and modifications, the adjustment member (adjustment members 34, 44, 54, etc.) is a hole (insertion hole 28A) into which the bolt 32 in the first attachment portion 28, 29, 31, 33 can be inserted. , Hole 48, hole 62, and insertion hole 33A) may be arranged at different positions. For example, as shown in FIG. 26, the first attachment portion 28 has a hole 82 into which the bolt 32 can be inserted at a position different from the insertion hole 28A in the direction orthogonal to the crankshaft direction CA. A female screw 82 </ b> A that can be connected to the bolt 32 is formed in the hole 82. As shown in FIG. 26, the hole 36 into which the bolt 32 can be inserted may be omitted from the adjustment member 34 of the modified example. Further, the adjustment member 34 may omit the loosening prevention member 42 and the slit 40 to which the loosening prevention member 42 is attached.

In each of the above-described embodiments and modifications, the first mounting portions 28, 29, 31, 33 and the second mounting portion 30 of the drive unit 10 are disposed outside the pair of flanges 104A, 104B of the bracket 100. Also good. That is, a pair of flanges 104 </ b> A and 104 </ b> B may be disposed between the first attachment portions 28, 29, 31, 33 and the second attachment portion 30. In this case, for example, as shown in FIG. 27, at least a part of the adjustment member 34 is located in a gap G5 between the first attachment portion 28 and the first flange 104A. In the example of FIG. 27, the female thread that fits the bolt 32 is omitted from the first mounting part 28 and the second mounting part 30, and the female thread that fits the bolt is formed on the pair of flanges 104 </ b> A and 104 </ b> B.
In each of the above embodiments and each of the modifications, the plurality of first attachment portions 28, 29, 31, and 33 may be formed to be connected to each other, and the plurality of second attachment portions 30 are formed to be connected to each other. May be.
In each of the above-described embodiments and modifications, the first attachment portions 28, 29, 31, 33 and the second attachment portion 30 are attached to the bracket 100 by separate bolts. The first attachment portions 28, 29, 31, 33 and the second attachment portion 30 that face each other in the direction CA may be fixed to the bracket 100 with a single bolt. In this case, the first mounting portions 28, 29, 31, 33, the second mounting portion 30, and the adjustment members 34, 44, 54, 74, 84 are not formed with female threads that fit the bolts. What is necessary is just to clamp | tighten the 1st attaching parts 28, 29, 31, and 33 and the 2nd attaching part 30 with a pair of flange 104A, 104B with a volt | bolt and a nut.

  In each of the above embodiments and each of the above modifications, the drive unit 10 may have any configuration as long as the drive unit 10 includes at least one of a motor and a transmission. For example, the transmission 16 may be omitted from the drive unit 10. In this case, as shown in FIG. 28, the drive unit 10 is an assist device having a motor 14 that assists the manual driving force applied to the crankshaft 12. For example, the drive unit 10 may be omitted from the motor 14 and the speed reducer (not shown) connected to the motor 14. In this case, the drive unit 10 is a transmission that changes the transmission ratio of the bicycle.

In the fourth embodiment, the recess 33G may be omitted from each first attachment portion 33.
In the fourth embodiment, as shown in FIG. 29, the adjustment member 75 may be press-fitted into the insertion hole 33 </ b> A of the first attachment portion 33 instead of the adjustment member 84. The adjustment member 75 has a hole 75 </ b> A that does not penetrate the adjustment member 75 in the axial direction. A female screw 75B to which the bolt 32 is connected is formed in the hole 75A. As shown in FIG. 29, the adjustment bolt 77 pushes the bottom 75C of the adjustment member 75 by screwing the adjustment bolt 77 from the second portion 33C side of the insertion hole 33A. Thereby, it can adjust so that protrusion amount PD4 from the 1st attaching part 33 of the adjustment member 75 may be increased. Note that the first embodiment can be modified in the same manner as in FIG. In the form shown in FIG. 29, the internal thread 33F may be omitted, and the second portion 33C may be omitted. When omitting the second portion 33 </ b> C, the first portion 33 </ b> B may penetrate the first attachment portion 33, and the first portion 33 </ b> B may not penetrate the first attachment portion 33.

In the fourth embodiment, the locking member 42 may be added to the adjustment member 84. In this case, a slit (not shown) for attaching the locking member 42 is formed in the holding portion 86 of the adjustment member 84.
In the fourth embodiment, the second portion 33C may not be formed. When omitting the second portion 33 </ b> C, the first portion 33 </ b> B may penetrate the first attachment portion 33, and the first portion 33 </ b> B may not penetrate the first attachment portion 33.

  -In the said 1st-3rd embodiment, after attaching each 1st attaching part 28,29,31 and the 1st flange 104A with the volt | bolt 32 similarly to 4th Embodiment, each 2nd attaching part 30 and the second flange 104B may be attached with bolts 32.

In the first embodiment, as illustrated in FIG. 30, an output rotating body 94 for transmitting the rotation of the crankshaft 12 to the rear wheel 93 may be disposed outside the housing 20. The output rotator 94 is disposed coaxially with the crankshaft 12 in the drive unit 10 and is connected to an output portion (not shown) through which the crankshaft 12 is inserted. The crankshaft 12 is connected to the output unit directly or via a one-way clutch. The output unit is rotatable with respect to the housing 20. As described above, the housing 20 supports the output rotating body 94 in a rotatable manner. The output portion may be formed in a cylindrical shape, for example, and may not be arranged coaxially with the crankshaft 12.
As shown in FIG. 30, an example of the output rotating body 94 is a front sprocket connected to a driven rotating body 93 </ b> A (rear sprocket) of the rear wheel 93 via a chain 95. The output rotating body 94 may be a front pulley connected to a driven rotating body 93A (rear pulley) of the rear wheel 93 via a belt (not shown).
In the crankshaft direction CA, the second attachment portion 30 of the housing 20 is provided closer to the output rotator 94 than the first attachment portion 28. As shown in FIG. 9, the second mounting portion 30 is fixed to the second flange 104 </ b> B by the bolt 32 while being in contact with the second flange 104 </ b> B of the bracket 100. Become. For this reason, the position of the output rotator 94 with respect to the bracket 100 is accurately determined by attaching the output rotator 94 (see FIG. 30) to the second mounting portion 30 side of the housing 20. Therefore, the accuracy of the chain line can be easily ensured. Note that the output rotator 94 can be similarly arranged in the second to fourth embodiments.

Further, a chain device 96 for suppressing the chain 95 from coming off the output rotating body 94 may be disposed outside the housing 20. As shown in FIG. 31, the chain device 96 includes a mounting portion 96A attached to the housing 20, a guide 96B that covers a part of the chain 95, and an arm 96C that connects the mounting portion 96A and the guide 96B. The guide 96B has a slot 96J (see FIG. 30) through which the chain 95 passes. The width of the slot 96J is formed larger than the width of the chain 95. The guide 96B has a pair of guide walls that prevent the chain 95 from falling off the output rotating body 94 on both sides of the slot 96J. Of the pair of guide walls of the guide 96B, end portions 96D on the upstream side in the traveling direction of the chain 95 are connected to each other. The end portion 96D may be provided with a mechanism for smoothly guiding the chain 95 when the chain 95 comes into contact. This mechanism may be, for example, a roller that is rotatably mounted, and at least a part of the outer peripheral surface may be formed in an arc shape. A plurality of arc-shaped first holes 96E extending in the direction around the crankshaft 12 are formed in the attachment portion 96A. The side wall of the housing 20 is provided with a plurality of holes having female threads to which bolts 96F can be attached. The attachment portion 96A is attached to the housing 20 with the angle around the crankshaft 12 adjusted by inserting bolts 96F into the plurality of first holes 96E and screwing them into the housing 20. A second hole 96G is formed in the guide 96B. The second hole 96G is a long hole. The guide 96B is attached to the arm 96C in a state where the position of the guide 96B with respect to the arm 96C is adjusted by inserting a bolt 96H into the second hole 96G and screwing it into the tip of the arm 96C.
As shown in FIG. 32, a part of the output rotating body 94 is disposed in the slot 96 </ b> J of the chain device 96. The chain device 96 can be rotated around the crankshaft 12 within the range of the plurality of first holes 96E in accordance with the number of teeth of the output rotating body 94, and the position of the guide 96B can be adjusted. Further, the position of the end portion 96D of the guide 96B with respect to the chain 95 can be adjusted by changing the position of the guide 96B with respect to the arm 96C within the range of the second hole 96G. The guide 96 </ b> B is provided on the upstream side in the traveling direction of the chain 95 with respect to the output rotating body 94, but may be provided on the downstream side in the traveling direction of the chain 95 with respect to the output rotating body 94. The shape of the guide 96 </ b> B is not limited to the above-described configuration, and may be any configuration that guides the chain 95 or presses the chain 95 so as to prevent the chain 95 from being detached from the output rotating body 94. The second hole 96G of the guide 96B may be a round hole in which a female screw is formed, a long hole may be provided in the arm 96C, and the guide 96B may be configured to be movable with respect to the arm 96C.

A crank arm 97 is fixed to both ends of the crankshaft 12 in the axial direction so as to be rotatable integrally with the crankshaft 12. An example of a structure for fixing the crank arm 97 and the crankshaft 12 will be described with reference to FIG. In the drive unit 10, the structure for fixing the left and right crank arms 97 to the crankshaft 12 is the same.
At the end of the crank arm 97 to which the crankshaft 12 is attached, a hole 97A into which the end of the crankshaft 12 is inserted, a first fixing hole 97B and a second fixing hole for fastening the crank arm 97 to the crankshaft 12. 97C is formed. A slit 97D cut out toward the end of the crank arm 97 is formed in a part of the hole 97A in the circumferential direction. The first fixing hole 97B and the second fixing hole 97C penetrate the crank arm 97 in the width direction. The width direction of the crank arm 97 is a direction parallel to the crankshaft 12 and a direction perpendicular to the longitudinal direction of the crank arm 97.
With the end of the crankshaft 12 inserted into the hole 97A of the crank arm 97, the first tightening bolt 98A is screwed into the first fixing hole 97B, and the second tightening bolt 98B is screwed into the second fixing hole 97C. As a result, the crank arm 97 is fastened toward the crankshaft 12, whereby the crank arm 97 is fixed to the crankshaft 12. Female holes are formed in holes (not shown) at both ends of the crankshaft 12. Caps 99 having male threads 99A are attached to the holes at both ends of the crankshaft 12.
In the fourth embodiment, the inner diameter of the second portion 33C of the first mounting portion 33 is formed larger than the hole 90 of the adjustment member 84, and the female screw 90A of the adjustment member 84 is viewed from the axial direction of the bolt 32. You may provide in the range of the hole of 2 part 33C. In this case, the adjustment bolt 92 can be screwed into the female screw 90A of the adjustment member 84 through the hole of the second portion 33C, and the adjustment member 84 can be moved to the second portion 33C side.

  DESCRIPTION OF SYMBOLS 10 ... Drive unit (bicycle component), 12 ... Crankshaft, 14 ... Motor, 16 ... Transmission, 20 ... Housing, 28, 29, 31, 33 ... 1st attaching part, 28A, 33A ... Insertion hole, 30 ... Second mounting portion, 32 ... bolt, 32B, 46A, 76 ... male screw, 33B ... first portion, 33C ... second portion, 33F ... female screw, 33G ... concave, 34, 44, 54, 74, 75, 84 ... Adjustment member, 36, 48, 50, 62, 78, 82, 90 ... hole, 36A, 48A, 52, 62A, 75B, 78A, 82A, 90A ... female thread, 38, 86A ... restraining part, 38A, 86B ... knurl, 46: support portion, 56: first inclined surface, 60: long hole, 64: second inclined surface, 80: washer (adjusting member), 86: holding portion, 88 ... flange portion, 93 ... rear wheel, 9 ... Output rotating body, 100 ... Bracket (frame), C ... Crankshaft axis, CA ... Crankshaft direction (direction parallel to the crankshaft axis), G1, G2, G3, G4, G5 ... Gap, PD1, PD2 , PD4 ... Projection amount.

Claims (31)

A housing that rotatably supports the crankshaft;
A first attachment portion provided on the housing and attachable to a bicycle frame;
In a state where the first attaching part is attached to the frame, it viewed including the adjustment member at least partially disposed in a gap formed between the first mounting portion frame,
The first attachment portion includes a hole into which a bolt can be inserted,
The bicycle component , wherein the hole of the first mounting portion is formed with a female screw connectable to the bolt .   The bicycle component according to claim 1, wherein the adjustment member is a washer. Is possible by the bolt inserted before Kiana mounted to said frame, bicycle component according to claim 2. The bicycle component according to claim 3 , wherein the bolt can be inserted into the washer. The bicycle component according to any one of claims 2 to 4 , wherein the washer is a tapered washer. The bicycle component according to claim 5 , wherein the tapered washer includes a long hole extending in a tilt direction. A housing that rotatably supports the crankshaft;
  A first attachment portion provided on the housing and attachable to a bicycle frame;
  An adjustment member disposed at least in part in a gap formed between the first attachment portion and the frame in a state where the first attachment portion is attached to the frame;
  The adjusting member is a taper washer;
  The taper washer is a bicycle component including an elongated hole extending in an inclined direction. The bicycle component according to any one of claims 5 to 7 , wherein the tapered washer includes a first inclined surface in contact with the first attachment portion or the frame.   The bicycle component according to claim 8, wherein a process for increasing frictional resistance is performed on the first inclined surface.   The bicycle component according to claim 8 or 9, wherein the first attachment portion includes a second inclined surface that makes surface contact with the first inclined surface of the tapered washer.   The bicycle component according to claim 10, wherein a process for increasing frictional resistance is applied to the second inclined surface.   2. The bicycle component according to claim 1, wherein the adjustment member is supported by the first attachment portion such that a protruding amount from the first attachment portion can be changed. The control member, the first including the Flip ne male connecting with the female screw of the mounting portion, bicycle component according to 請 Motomeko 12. Said first mounting portion includes a supporting portion having a male screw on the outer periphery,
Wherein the adjustment member is a nut having a female screw for connecting said external thread of said support portion, bicycle component according to claim 13. It is possible by the bolt inserted before Kiana mounted to said frame, bicycle component according to any one of claims 12 to 14.   The bicycle component according to claim 15, wherein the adjustment member includes a hole into which the bolt can be inserted. The first attachment portion includes an insertion hole,
The bicycle component according to claim 12, wherein the adjustment member is press-fitted into the insertion hole of the first attachment portion. The adjustment member includes a hole into which a bolt can be inserted,
The bicycle component according to claim 17 , wherein the first attachment portion is attachable to the frame by the bolt inserted into the hole of the adjustment member. The bicycle component according to claim 18 , wherein the hole of the adjustment member is formed with a female screw connectable to the bolt. The bicycle component according to any one of claims 17 to 19 , wherein an outer peripheral portion of the adjustment member is provided with a suppressing portion that suppresses movement of the adjustment member with respect to the first attachment portion. 21. The bicycle component according to claim 20 , wherein the suppressing portion includes a knurl formed on the outer peripheral portion of the adjusting member. The adjustment member is provided at a holding portion held by the first attachment portion, and an end portion of the holding portion, and is disposed in the gap formed between the first attachment portion and the frame. The bicycle component according to any one of claims 1 and 12 to 21 , including a flange portion. The bicycle component according to claim 22 , wherein the first attachment portion further includes a recess capable of accommodating the flange portion. 24. The bicycle component according to claim 22 or 23 , which directly or indirectly references claim 17 , wherein the holding portion is press-fitted into the insertion hole of the first attachment portion. The insertion hole of the first attachment portion includes a first portion into which the adjustment member is press-fitted and a second portion having an inner diameter smaller than the inner diameter of the first portion, and an internal thread is provided in the second portion. is, bicycle component according to any one of claims 22-24 to cite any one or claims 17 directly or indirectly in claims 17-21. An inner diameter of the second portion is smaller than an inner diameter of the hole of the adjustment member;
26. The method according to claim 25 , wherein the internal thread of the second portion is provided within the hole of the adjustment member when viewed from the axial direction of the bolt, directly or indirectly referring to claim 18 . Bicycle component. 27. The method according to any one of claims 1 to 26 , further comprising a second mounting portion that is provided on the housing and can be mounted on the frame at a position different from the first mounting portion in a direction parallel to the axis of the crankshaft. Bicycle component according to any one of the above. 28. The bicycle according to claim 27 , wherein at least a part of the adjustment member is disposed on a side opposite to the second mounting portion with respect to the first mounting portion in a direction parallel to an axis of the crankshaft. Components. The housing is disposed outside the housing and rotatably supports an output rotating body for transmitting rotation of the crankshaft to a rear wheel.
29. The bicycle component according to claim 27 or 28 , wherein the second attachment portion is provided closer to the output rotating body than the first attachment portion in a direction parallel to the axis of the crankshaft. 30. The bicycle component according to any one of claims 1 to 29 , further comprising a motor that assists a human driving force applied to the crankshaft. The bicycle component according to any one of claims 1 to 30 , including a transmission that changes a speed ratio of the bicycle.

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