JP5277333B1 - Braking method of hub brake in bicycle - Google Patents

Abstract

A method for braking a hub brake in a bicycle is provided.
In a braking method of a hub brake in a bicycle, an axle bearing hole 17 having a long groove or a non-circular hole is provided in a frame end portion 7 in the bicycle frame, and the axle bearing hole 17 is provided on the axle side. The anti-rotation portion 4 is fitted to prevent the axle from rotating, and the anti-rotation portion 4 is fitted to the axle receiving hole 17 so as to be supported from the anti-rotation portion 4 to the frame end portion 7 during braking. The anti-rotation part 4 is the starting point during braking.
[Selection] Figure 1

Description

  The present invention relates to a method for braking a hub brake in a bicycle, a hub brake system, and a device used therefor.

  Conventionally, as a hub brake for a bicycle, various hub brakes such as a disc brake provided with a brake rotor disc or a cam / roller type brake that presses a roller into a brake drum and presses a shoe against an inner peripheral surface of the brake drum. Etc. are known (see, for example, Patent Document 1).

  In general, a bicycle hub brake refers to a brake in which a braking portion is directly connected to a wheel hub. The hub brake includes a band brake, a servo brake, and a coaster brake in addition to the disc brake and the cam / roller brake. A common feature of these hub brakes is that when a manual lever in a brake lever device attached to the handle is manually turned to brake it, it receives a reaction force, but one side is a manual lever and the other side is a frame. It is mentioned that it is set as the starting point of braking by fastening to.

  For example, taking a caliper having a crimp pad for gripping the disc brake rotor and a disc brake having a disc mount for fixing the caliper as an example, the disc mount normally provided on the frame of the bicycle is the starting point of braking. The disc brake causes a caliper fastened to the disc mount to grip and brake the disc brake rotor fixed to the hub and rotating together with the hub. In this case, the force for braking the rotation of the disc brake rotor is transmitted as a reaction to the disc mount fixed to the frame of the bicycle. For this reason, the disk mount is a component that must be provided with sufficient strength in the seat stay (or chain stay) of the frame in which a balance between light weight and rigidity is sought.

  On the other hand, although not shown, a mount may be installed on the axle when a disc brake is used. In this case as well, the V-brake support on the frame fastened by the bar from the mount is used as the starting point of braking. The support column is installed considering the strength as a braking starting point, and it can be said that it is more suitable to install the disc brake on the frame without the disc mount. However, the V-brake support is not provided in every frame, and it is an excellent technique for coping treatment.

  In addition to the disc brakes described above, the band brakes, servo brakes, and roller brakes that operate by turning a manual lever in a brake lever device attached to a handle when braking a bicycle are all wheel hubs. The brake device is configured such that braking is caused to the cylindrical brake drum fixed to each other by the respective braking means provided in the outer shell cover. Also in these brake devices, each outer shell cover includes a fastening portion fastened by a metal band to a seat stay or chain stay of a bicycle frame, and this fastening portion serves as a starting point for braking. .

  The fastening portion using these hardware bands may apply a strong force (bending force) as a starting point of braking at the time of braking to the portion of the fastening portion, which may damage the bicycle frame (the seat stay or the chain stay). is there. Therefore, in a luxury car such as a sports car, a fastening means using a hardware band is not selected.

  The coaster brake is a brake system in which braking is performed by a coaster brake hub with a built-in braking function. As shown in FIG. 9, one hub shell 47 is provided with a brake arm 48, and the brake arm 48 is chain-stayed. This is a brake device of a type that is used by being fastened to 57.

  As described above, the conventional hub brake is a brake of a type that exerts a braking force by being fastened to a frame stay or an instrument (mount) provided in the frame stay. Since the conventional hub brake is fastened to the frame stay or an instrument (mount) provided to the frame stay, it has been a brake device in a form that uniformly loses ease of attachment / detachment. This is reflected in the difficulty of attaching and detaching the wheel as it is, and the rim brake method and the V brake method that can easily attach and detach the wheel are more advantageous in terms of attaching and detaching the wheel. Met.

Utility Model Publication 6-87188 Patent Publication 2007-30648

  The inventor studied and tried to release the disc mount in the disc brake from the seat stay (or chain stay). In other words, it begins with an attempt to use a disc brake on a frame that does not have a disc mount (and of course a V-brake mount). Originally, the burden of installing a disk mount on a frame stay is high for high-end vehicles mainly made of carbon. In order to reinforce the partial rigidity of the frame stay, it is necessary to add reinforcement of an aluminum member, and this reinforcement is also a procedure for changing the rigidity balance of the entire bicycle. It can be said that the idea of a disc brake (= hub brake) that applies a braking force to one place of the stay is not preferable.

  On the other hand, the position accuracy of the disc brakes installed on the axles is special compared to other brake devices. This is natural because it is the positional accuracy to the disc brake rotor on the axle. Naturally, the frame side receiving port of the braking force is the axle side, which is the first contact portion to the frame of the axle portion (hub). The reason is the portion with the strongest strength, the portion with the least influence on the rigidity balance, and the frame portion closest to the hub brake. In other words, compared to the conventional hub brake frame fastening method, the transmission is achieved in the frame portion closest to the hub brake.

And what should be considered in order to make the structure as described above is one point of correction of intensity. The conclusion is that instead of the conventional mounting method for frame stays and fastening methods using hardware bands for frame stays, a method for digesting braking force at the frame end (equipped with the axle bearing) will be developed. Reached. As a result, we were convinced that, in the production of the bicycle frame, it was possible to contribute to simplification of the bicycle frame, efficiency of the frame fastening method of the hub brake, and weight reduction of the bicycle.
As a result of various examinations from such a viewpoint, the present inventor obtained knowledge that the frame end portion provided with the axle bearing portion can be strengthened, and obtained the hub brake in the bicycle of the present invention. The braking method, the hub brake system, and the equipment used for these were completed.
It is an object of the present invention to provide a method for braking a hub brake in a bicycle, a hub brake system, and a device used therefor.

In order to advantageously solve the above-mentioned problem, in the braking method for a hub brake in a bicycle according to a first aspect of the present invention, in the braking method for a hub brake in a bicycle, a vehicle for receiving an axle provided at a frame end portion of a bicycle frame. An axle bearing hole comprising a non-circular hole is provided in the bearing portion, and an anti-rotation portion provided on the axle side is fitted into the axle bearing hole to prevent rotation of the axle, and the anti-rotation portion is The frame end portion includes a frame end main body and a rotation stopper receiving portion for receiving the rotation stopper portion, and the rotation stopper receiving portion has an inner circumferential direction. The anti-rotation receiving part has internal teeth with irregularities alternately formed along the side surface, and the anti-rotation receiving part is detachably attached to the frame end body at the frame end part. The frame end body has six pin insertion holes at equiangular intervals in the circumferential direction around the center axis of the axle bearing hole, and is provided in the anti-rotation receiving portion in the pin insertion hole. When the pin is inserted, the frame end main body and the anti-rotation receiving portion are locked, and the anti-rotation portion includes external teeth having irregularities alternately formed along the outer peripheral surface thereof. The gear-shaped member having a shape is fixed to and integrated with an intermediate portion of an axle integrated with the disc mount, and the gear-shaped member is provided at a distance from the main body of the disc mount. The frame end main body can be disposed in a gap between the disk mount main body and the internal teeth of the anti-rotation receiving portion and the external teeth of the gear-shaped member. Parts and the frame end portion and is fixed so as to be supported on the frame end portion from said detent portion at the time of braking, the detent portion which is fitted to the vehicle bearing hole, wherein the frame at the time of braking It is characterized by being a starting point for transmitting a reaction force during braking to the end portion.

The bicycle device of the second invention is a device used in the braking method of the hub brake in the bicycle of the first invention, wherein the anti-rotation portion fitted so as to be embedded in the axle bearing groove or the axle bearing hole is provided. The mount that is provided on the shaft portion of the mount and supports the disc caliper is joined to the axle, and the shaft portion of the mount and the axle are disposed on the same central axis, and the shaft portion of the mount includes the axle bearing groove. The shaft portion is disposed in the wheel bearing hole.

According to a third aspect of the present invention, in the bicycle device of the second aspect , the anti-rotation portion fitted into the axle bearing hole formed of a non-circular hole has a convex portion protruding outward in the radial direction with an interval in the circumferential direction. It is characterized by having.

According to a fourth aspect of the present invention, in the bicycle device of the third aspect of the invention, the device is used in the method for braking a hub brake in a bicycle according to claim 1 , and is embedded in a detent receiving portion having internal teeth at the frame end portion. The shaft portion of the mount is provided with the anti-rotation portion fitted so as to be inserted, and the anti-rotation portion has external teeth in which irregularities are alternately formed along the outer peripheral surface in the outer peripheral direction.

  According to the present invention, the rotation prevention portion provided on the hub shaft side or outer shell cover as an axle is a starting point for transmitting the reaction force at the time of braking to the frame end portion that receives the axle at the time of braking. As well as the conventional hub brake, the design of the bicycle frame can be made more efficient and simplified. In other words, when designing a bicycle, there is no need for a mounting post or disc mount in the rim brake as in the conventional case, and the burden of braking force on a part of the stay by fastening at a position away from the frame end part is also required. It becomes possible to design without consideration, and when designing a bicycle, it will be possible to concentrate on reducing the weight of the bicycle and creating a rigidity balance. When designing bicycle hub brakes, it is only necessary to consider the rigidity of the frame end, and the rigidity of the frame end does not affect the rigidity balance of other parts. It becomes easy. In addition, since the structure is such that the anti-rotation part is locked to the frame end part, the axle can be attached and detached, and the wheel can be attached and detached very easily. It can be expected that the use of a hub brake having a large number will be selected, and the advantage of the hub brake such as being resistant to rain and mud splash will improve the safety performance of the bicycle.

It is explanatory drawing for demonstrating the braking method of the hub brake of one Embodiment of this invention, and is a partially longitudinally exploded front view which shows the principal part of a hub brake system. FIGS. 1A and 1B show the mount shown in FIG. 1 in a partially vertical side view, FIG. 1B a left side view, and FIG. 1C a right side view. It is a side view which shows the relationship between the axle bearing hole in the frame end of another form, and the rotation stop part of an axle end part. (A) is explanatory drawing for demonstrating the braking method of the hub brake of the further another form of this invention, The perspective view (b) which shows the principal part of a hub brake system is a vertical side view of (a). It is a vertical side view which partially decomposes | disassembles and shows the form shown in FIG. It is a disassembled perspective view which decomposes | disassembles and shows the form shown in FIG. It is the front view and side view of some components in the form shown in FIG. It is explanatory drawing for demonstrating the function of a band brake type hub brake, (a) is a cross-sectional plan view, (b) is a side view which takes out an outer shell cover, (c) is a cross-sectional plane of (b) FIG. 4D is a side view of the reinforcing plate fixed to the outer shell cover. It is explanatory drawing for demonstrating the function of a servo brake type hub brake, (a) is a cross-sectional plan view, (b) is a side view which takes out an outer shell cover, (c) is a cross-sectional plan view of (b) (D) is a side view of a reinforcing plate fixed to the outer shell cover. It is explanatory drawing for demonstrating the function of a roller brake type hub brake, (a) is a cross-sectional top view, (b) is a side view which takes out and shows an outer shell cover, (c) is a cross-sectional top view of (b). (D) is a side view of a reinforcing plate fixed to the outer shell cover. It is explanatory drawing for demonstrating the function of a roller brake type hub brake, and is an expanded vertical side view which expands and shows the roller vicinity. It is a side view which shows the structure of the long groove for axle bearings in the frame end part of the form of the hub brake shown in FIGS. It is explanatory drawing for demonstrating the function of a coaster hub brake, (a) is a partially disassembled general | schematic longitudinal front view, (b) is a schematic longitudinal front view which shows the state which fitted the anti-rotation part by the side of an axle to the frame end, (C) is an exploded side view showing the relationship between the frame end and the axle-side detent portion. It is a schematic longitudinal cross-sectional front view which shows the conventional coaster hub brake. It shows the vicinity of the frame end portion of another form, (a) is a perspective view showing the vicinity of the inverted U-shaped frame end portion, (b) is a front view of (a), (c) is (a FIG. It is a perspective view which isolate | separates and shows the flame | frame end part shown in FIG. 11, and the presser fitting inserted and latched to this. (A) is a front view which shows the relationship between a presser fitting, a mount, a caliper, a disc brake rotor, and an axle, and (b) is a front view of (a). (A) is a front view which shows the relationship between a frame end part, a presser fitting, a mount, a caliper, a disc brake rotor, and an axle, and (b) is a front view of (a). (A) Side view showing the vicinity of a binder metal fitting, (b) is a front view of (a).

    Next, the present invention will be described in detail based on the illustrated embodiment.

  1 and 2 show a disc brake system according to an embodiment of the present invention, and FIG. 1 is a partially vertical exploded front view showing a main part of a hub brake device 22, and a functional schematic diagram of the disc brake system. 2A is a partially longitudinal side view showing the mount shown in FIG. 1 taken out, FIG. 2B is a left side view, and FIG. 2C is a right side view.

  As shown in FIG. 2, the mount 1 used in the disc brake device 22 of the first embodiment is a mount 1 manufactured in accordance with international standard. In the front view shown in FIG. 2B, the center of the two holes of the first hole 53 of the mount 1 and the second hole 54 spaced from the first hole 53 are the same as the axle center (or the axle hole center). The distance of the side connecting the center of the first hole 53 and the axle center 55 is 39.9 mm, and the distance of the side connecting the center of the second hole 54 and the axle center 55 is used. 78.11 mm, the distance of the side connecting the center of the first hole 53 and the center of the second hole 54 is 51 mm, which is the apex of a triangle having these three sides.

  The mount 1 is a mount 1 having a male screw shaft portion 5 that also serves as an end portion of the axle 2. A female screw cylinder 3 having a female screw hole 3a for joining to the axle 2 (see FIG. 1) is integrally provided on one side surface on the hub shaft side of the mount 1, and the female screw is provided on the other side surface. On the same central axis as that of the tube 3, a detent portion 4 having a central axis is integrally provided, and a male screw shaft portion 5 is integrally fixed to the detent portion 4.

  The male screw shaft portion 5 is provided so as to be located on the same central axis as the female screw cylinder 3. The male screw shaft portion 5 is configured to have the same central axis as the axle 2. In addition, the rotation preventing portion 4 has a radially semi-circular outer shape at one end in the radial direction on the base end side, and is integrally formed with the substantially semicircular portion on the radially outer side of the male screw shaft portion 5. The anti-rotation part 4 is formed integrally with the mount 1. The semicircular outer shape portion has an outer diameter substantially the same as or slightly larger than the outer diameter of the male screw shaft portion 5.

  In addition, a long groove 9 also serving as an axle bearing groove 18 is provided in the axle bearing portion 8 in the frame end portion 7 of the bicycle. The both sides forming the long groove 9 are fitted so that the front and rear surfaces of the anti-rotation portion 4 are engaged, and the rotation of the mount 1 during braking is prevented.

  As shown in FIG. 1 (a), the male screw portion 11 on one end side of the hub shaft 10 is screwed and integrated with the female screw cylinder 3 in the mount 1, and the wheel bearing in the frame end portion 7 is integrated. The anti-rotation portion 4 is fitted into the long groove 9 of the portion 8, and the nut 12 is tightened and attached from the outside of the frame end portion 7. A thickness dimension of the detent part 4 is smaller than a thickness dimension of the frame end part 7, and the detent part 4 is fitted so as to be accommodated in the frame end part 7. The other end portion of the hub axle 10 (on the right end side in FIG. 1a) is fitted with the other frame end portion 7b, and the nut 12 is attached to the outside thereof, and the mount 1 and The hub 13 is mounted in a state in which the hub 13 is positioned in the axial direction by the nuts 12 while being fixed in position between the one and the other frame end portions 7 and 7b. A caliper 15 for holding the disc brake rotor 14 concentrically fixed to the hub 13 is detachably fixed to the mount 1 with bolts 16.

  In this way, the male screw shaft portion 5, the female screw cylinder 3 in the mount 1 and a part of the main body of the mount 1 together with the shaft portion of the hub main body form a hub shaft 10 as the axle 2.

  In such a form, when the hub brake in the bicycle is operated and braked, the manual lever attached to the handle (not shown) is rotated by grasping with a hand, and the manual brake is turned on. The caliper 15 that operates in conjunction with the lever is driven, and the disc brake rotor 14 is gripped by a pressure-bonding pad (not shown) of the caliper 15 to perform braking. When braking is performed in this manner, the reaction force acting on the axle 2 side is fitted with the rotation preventing portion 4 provided on the axle side to prevent the axle from rotating. In addition, the turning force acting on the axle 2 side during braking is supported from the anti-rotation portion 4 to the axle bearing portion 17 of the frame end portion 7 so as to be fitted into the axle bearing hole 18 in the axle bearing portion 17. The anti-rotation part 4 is used as a starting point during braking. Therefore, the braking force is not directly applied to the axle 2. The hub 13 is supported by a bearing or the like so as to be rotatable with respect to the hub shaft 10.

  The anti-rotation portion 4 and the male screw shaft portion 5 are provided integrally with the mount 1 so as to be an extended portion of the hub shaft 10 as a part of the axle 2. And the thickness dimension of the axial direction of the said detent | locking part 4 does not exceed the thickness of frame end parts 7, such as a rear end part, because it tightens with the nut 12. FIG.

  The anti-rotation portion 4 is fitted in close contact with the long groove 9 without play in the left-right direction (rotation direction about the axle 2) or the like, and in the rotation direction around the axle 2 of the mount 1. Demonstrates braking against movement. The nuts 12 are complemented so that the tightening from both ends can restrain the position of the anti-rotation part 4 in the axial direction and exert braking.

  In FIG. 1, a disc brake rotor 14 that moves in conjunction with the tire wheel and the hub shaft 10 is gripped by a caliper 15 fastened to a disc mount 1 having a detent portion 4 that is an instrument of the present invention. When braking occurs, the dynamic force of the disc brake rotor 14 acts in the direction of rotating the disc brake system itself, and the force is transmitted as it is as the force of rotating the disc mount 1. The anti-rotation portion 4 of the disk mount 1 as an instrument of the invention is placed in the long groove 9 and is stopped at the wheel bearing portion 17. At the time of braking the bicycle, a twisting force (twisting force) is applied to the disc mount 1 as an instrument of the present invention, but is transmitted from the anti-rotation portion 4 to the frame end portion 7. The force (twisting force) is not transmitted to 2. Further, the body portion of the disk mount 1 exposed to the twisting force is a strong member and is made in consideration of a sufficient plate thickness, so that it can safely remain stationary. As the material of the disk mount 1, for example, a metal plate such as a steel plate is used.

  As described above, in the disc brake system of the present invention, the caliper 15 is obtained by providing the internal thread cylinder 3 on one side of the disc mount 1 and the disc mount 1 in which the rotation stopper 4 and the external thread shaft portion 5 are provided on the other side. Thus, the braking force can be transmitted from the anti-rotation portion 4 to the axle bearing portion 17 of the highly rigid frame end portion 7 through the disk mount 1, which is a strong and safe starting point for transmission. The anti-rotation portion 4 serves as a starting point for transmitting a reaction force during braking to the frame end portion 7 during braking.

  FIG. 3 is an exploded perspective view showing the relationship between the axle bearing hole and the rotation stopper at the axle end at the frame end according to another embodiment. In this embodiment, the wheel bearing hole 18 is a non-circular hole, and the anti-rotation portion 4 fitted into the wheel bearing hole 18 has a cross-shaped cross section that protrudes outward in the radial direction at intervals in the circumferential direction. It is the external shape which has a convex part.

  The non-circular axle bearing hole 18 is an axle bearing hole 18 having a groove portion 19 that protrudes radially outward with a gap in the circumferential direction, and the anti-rotation portion 4 is formed from the axle bearing hole 18. Also, the anti-rotation portion 4 has a slightly smaller outer shape. As the anti-rotation portion 4 provided on the disc minte 1, a convex portion 4 c having a cross-shaped cross section is provided integrally with the disc mount 1 on the proximal end side of the male screw shaft portion 5.

  More specifically, the axle bearing hole 18 formed of the non-circular hole has a reverse T-shaped groove 18 a provided on the lower surface side of the frame end portion 7 and a T provided on the upper surface side of the presser fitting 30. It is formed by the letter-shaped groove 18b. The presser fitting 30 is arranged on the lower surface side of the frame end portion 7, and the wire 22 having one end fixed to the main body of the wire buckle 21 of the presser fitting 30 is bound to the wire receiving portion 20 on the frame end portion 7 side. As a result, the presser fitting 19 can be fixed to the frame end portion 7.

  As described above, the axle bearing hole 18 of the frame end portion 7 is formed as a four-tooth gear-shaped hole, and the frame end portion 7 is divided into two in the vertical direction, thereby providing a hub brake system with excellent braking force and convenience of attachment / detachment. Yes. If the attachment / detachment method using the wire buckle 21 is used as in the illustrated embodiment, a simple attachment / detachment method can be achieved. Also in this embodiment, the detent portion 4 serves as a starting point for transmitting a reaction force during braking to the frame end portion 7 during braking.

  In FIGS. 4 to 7, the wheel bearing hole 18 provided in the frame end portion 7 of another embodiment and the rotation prevention portion 4 fixed to the male screw shaft portion 5 provided integrally with the disk mount 1 are fitted. The form is shown. FIGS. 4 to 7 are explanatory views showing a braking method in the above case. In this embodiment, the frame end portion 7 is configured by providing a separate axle bearing portion 17 on the frame end main body 7a. In the form shown in FIG. 1 and FIG. 2 or FIG. 3, the frame end portion 7 itself is provided with a long groove 9 to form an axle bearing portion 17, and the male screw shaft portion 5 base end fixed integrally to the long groove 9 on the disk mount 1 side. 4 to 7, the long groove 9 provided in the frame end portion 7 is used as a groove only for receiving through the axle, and the frame end. On the outer surface of the main body 7a opposite to the hub side, a detent receiving portion 80 having a non-circular hole is provided so as to be detachable. This is a form in which the fixed rotation preventing portion 4 is fitted to the portion 5 so as not to rotate and is supported.

  Then, pin insertion holes 81 opened on the outer surface side of the frame end main body 7a are provided at a plurality of locations (in the case of illustration, at equal intervals in the circumferential direction around the central axis of the long groove 9 in the frame end main body 7a). 6 places). Further, the annular ring 83 is made of a metal plate and includes a plurality of pins 82 that match the pin insertion holes 81 at regular angular intervals, and the irregularities are alternately formed along the inner surface in the inner circumferential direction. Each pin 82 of the annular ring 83 made of metal plate having fine internal teeth 83a is inserted into the pin insertion hole 81 of the frame end body 7a and locked, and one side of the annular ring 83 made of metal plate is fixed to the frame end body 7a. The anti-rotation receiving part 80 is detachably attached to the frame end main body 7a. Further, the long groove 9 in the frame end main body 7a serves as an axle receiving hole 18 for receiving the axle 2.

  The anti-rotation portion 4 fitted so as to be accommodated in the anti-rotation receiving portion 83 has a gear-like member 84 having fine external teeth formed with irregularities alternately formed along the outer peripheral surface in the outer peripheral direction. 1 is formed by being screwed into an intermediate portion of the male screw shaft portion 5 integrally and fixed by welding or the like. Further, the gear-like member 84 fixed to the male screw shaft portion 5 integral with the disc mount 1 is provided at a distance from the main body of the disc mount 1, and between the gear-like member 84 and the main body of the disc mount 1. The frame end main body 7a can be arranged in the gap. The gear-like member 84 has a plate thickness smaller than that of the metal plate annular ring 83 and is fitted inside the metal plate annular ring 83 while the gear-like member 84 is accommodated. Can be placed.

  Similarly to the embodiment shown in FIG. 1 and FIG. 2 or FIG. 3, the disk mount 1 is provided with a female screw cylinder 3 having the same central axis as the male screw shaft portion 5, and the hub shaft 10 on the hub 13 side is screwed and fixed. Has been.

  In such a form, as shown in FIGS. 5 and 6, the frame end portion is interposed between the disc mount 1 and the gear-like member 84 in a state where the hub shaft 10 on the hub 13 side is screwed and fixed. The disk mount 1 is disposed so that the gear member 84 is positioned outside the frame end portion 7, and the male screw shaft portion 5 integral with the disk mount 1 intersects the long groove 9 of the frame end portion 7. The metal plate annular ring 83 is fitted so as to be fitted from the outside of the gear-like member 84, and the pins 82 in the metal plate annular ring 83 are respectively connected to the frame end main body 7a. The presser washer 85 having an outer diameter larger than the outer diameter of the gear-shaped member 84 is fitted into the pin insertion hole 81 from the outside of the annular ring 83 made of the metal plate. By attaching to the screw shaft portion 5, the gear-like member 84 is prevented from coming out, and by screwing the nut 12 from the outside of the press washer 85, the metal plate annular ring 83 is attached to the end frame body 7 a together with the disk mount 1. It is fixed. Further, the hub 13 can be installed in a state of being positioned between the end frame portions 7 and 7b by screwing and tightening the nut 12 outside the frame end portion 7b on the opposite side. Therefore, the wheel mounted on the hub 13 side via spokes (not shown) can be easily assembled with the hub 13 by removing the nut 12, the press washer 85 and the metal plate annular ring 83 together with the hub 13. The structure is such that it can be removed from 7a or attached to the frame end main body 7a by the reverse procedure. Since the other parts are the same as those shown in FIG. 1, the same reference numerals are given to the same parts.

  In the form shown in FIGS. 4 to 7, when braking is performed when the bicycle is running, the disc brake rotor 14 is gripped by the crimp pad of the caliper 15 by turning the manual brake lever on the handle side. The reaction force in this case is transmitted from the disk mount 1 to the annular ring 83 made of a metal plate from the gear-like member 84 via the male screw shaft portion 5 and made of a metal plate as a detent portion. Stress can be transmitted to the frame end portion 7 via each pin 82 of the annular ring 83.

  Next, referring to FIGS. 8 to 13, in the hub brake group, the band brake device 23 shown in FIGS. 8 and 12, the servo brake device 24 shown in FIGS. 9 and 12, and the roller shown in FIGS. The brake device 25 will be described. In these forms, when braking, the band 28 or the brake shoe 29 is operated by being connected to the distal end side of the lever 26 that is disposed in the brake device and is rotatably supported by the outer shell cover 27. Since the brake drum 31 that rotates independently with the wheel (not shown) is included inside the outer shell cover 27 independently, the functional schematic diagram of the outer shell cover 27 is the same in each figure. It has become. Since the reaction force at the time of braking acts on the outer shell cover 27 supporting the lever 26 and the like, the reaction force at the time of braking is transmitted from the outer shell cover 27 to the frame end portion 7 so as to flow. ing.

  In the band brake in the case of FIG. 8A and FIG. 12, the axle 2 passes from the hub 13 through the outer shell cover 27 and through the horizontal long slot 9 for the axle end of the frame end portion 7, and the frame end portion. 7, the nut 12 is fastened so that the position of the bicycle can be adjusted in the front-rear direction of the bicycle, and the tension of the chain (not shown) can be adjusted. A nut 12b for attaching the outer shell cover 27 to the hub body 13a is attached to the axle 2 on the outer side of the outer shell cover 27. The outer shell cover 27 is installed in a position where the nut 12b is free from the rotation direction of the wheel, covers the brake drum 31, and can be braked. In the outer shell cover 27, an annular convex portion 32 is formed by pressing at an intermediate portion in the radial direction of the outer shell cover 27, and on the outer side (frame end side) of the annular convex portion 32, a circumferential direction is formed. A plurality of anti-rotation portions 4 (in the illustrated form, the first anti-rotation portion 4a and the second anti-rotation portion 4b) are fixedly provided by welding or the like.

  In the first anti-rotation portion 4a and the second anti-rotation portion 4b, a square female screw member 33 is fixed to the annular convex portion 32, and the female screw hole extends over the square female screw member 33 and the annular convex portion 32. Is formed. Since the frame end portion 7 is provided with the long groove 9 as an axle insertion portion, the axle 2 is supported by the frame end portion 7 via the outer shell cover 27.

  In the long groove 9 portion on the outer shell cover 27 side in the frame end portion 7, a first rotation prevention portion 4 a and a second rotation prevention portion 4 b fixed to the annular convex portion 32 of the outer shell cover 27 are formed in the long groove 9. It is slidably fitted in the longitudinal direction. The outer surface of the annular convex portion 32 is pressure-bonded to the inner side surface (the surface on the outer shell cover 27 side) of the frame end portion 7 in a surface contact state.

  A third anti-rotation member 36 and a fourth anti-rotation member 37 fixed to a reinforcing steel plate 35 such as a circle are provided in the longitudinal direction of the long groove 9 in the long groove 9 portion on the opposite side of the outer shell cover 27 in the frame end portion 7. And the reinforcing steel plate 35 is press-bonded to the frame end portion 7. Bolt holes are formed concentrically across the reinforcing steel plate 35 and the third and fourth anti-rotation members 36, 37, and the reinforcing steel plate 35 and the anti-rotation members 36, 37 fixed thereto. The bolt 16 attached from the outside of the reinforcing steel plate 35 spans the frame end portion 7, the outer shell cover 27, and the first and second anti-rotation portions 4 (4 a) and 4 (4 b) fixed to the outer shell cover 27. The reinforcing steel plate 35, the frame end portion 7, and the outer shell cover 27 are integrated.

  More specifically, the plate side surface 38 of the annular convex portion 32 on which the first anti-rotation portion 4a and the second anti-rotation portion 4b are installed is the inner side surface 39 (outer shell cover 27 of the frame end portion 7). The first anti-rotation portion 4a and the second anti-rotation portion 4b are accommodated in the long groove 9 portion of the frame end portion 7. Since the shape of the long groove 9 of the frame end portion 7 is assumed to be a single gear wheel in the illustrated embodiment, a long groove is provided in the lateral direction, and the frame end portion 7 is bifurcated.

  In the case shown in FIG. 8, the annular protrusion 32 is tightly adhered to the inside of the frame end portion 7 by tightening the nut 12 attached to the end portion of the axle 2, and the first detent portion 4 (4 a). And the second detent portion 4 (4b) are in close contact with and fixed to the frame end portion 7, so that the outer shell cover 27 is strongly fastened to the frame end portion 7 and brakes in the rotational direction of the axle 2. However, due to the strength of the first anti-rotation part 4 (4a) and the second anti-rotation part 4 (4b), it can be transmitted from these to the frame end part 7 via the groove inner surface of the long groove 9, It can be prevented from being transmitted to the axle 2.

  Also, the servo brake embodiment of the present invention shown in FIGS. 9 (a) and 12 and the roller brake embodiment shown in FIGS. 10 (a) and 12 have the same structure except in the vicinity of the outer shell cover 27. Therefore, the same reference numerals are given to the same parts as those in the above embodiment. As shown schematically in FIG. 9, in the servo brake, the brake shoe 29 is disposed in the brake drum 31 fixed to the hollow hub shaft 10 in the outer shell cover 27, and is mounted on the horizontal axis of the lever 26. The cam 40 can move the brake shoe 29 forward and backward in the radial direction of the brake drum 31, and can press the brake shoe 29 against the inner peripheral surface of the brake drum 31. These parts have the same structure in the present invention. In the case of the servo brake configuration shown in FIG. 9 as well, the annular convex portion 32 is strongly adhered to the inside of the frame end portion 7 by tightening the nut 12 attached to the end portion of the axle 2, and the first detent portion is also provided. 4 (4a) and the second detent portion 4 (4b) are in close contact with and fixed to the frame end portion 7. As a result, the outer shell cover 27 is strongly fastened to the frame end portion 7 and the axle 2 rotates. The braking with respect to the direction is transmitted from these to the frame end portion 7 through the inner surface of the long groove 9 by the strength of the first detent portion 4 (4a) and the second detent portion 4 (4b). Can be prevented from being transmitted to the axle 2.

  As shown schematically in FIG. 10, in the roller brake, a hollow shaft cam 41 that is pivotally connected to the lever 26 supported by the outer shell cover 27 and operated by the lever 26 has a hollow hub. A brake shoe 29 is disposed inside a brake drum 31 that is concentrically fitted to the shaft 10, disposed in the outer shell cover 27, and fixed to the hollow hub shaft 10, and the hollow shaft cam 41 and the brake A roller 42 is provided between the shoe 29 and the circumferential direction at an interval. By rotating the lever 26 counterclockwise, the hollow shaft cam 41 is rotated clockwise (clockwise), the roller 42 and the brake shoe 29 are moved outward in the radial direction, and the brake shoe 29 is moved. Is pressed against the inner peripheral surface of the brake drum 31 for braking. Also in the case of the roller brake shown in FIG. 10, the annular convex portion 32 is strongly adhered to the inside of the frame end portion 7 by tightening the nut 12 attached to the end portion of the axle 2, and the first detent portion is also provided. 4 (4a) and the second detent portion 4 (4b) are in close contact with and fixed to the frame end portion 7. As a result, the outer shell cover 27 is firmly fastened to the frame end portion 7, and the axle 2 Due to the strength of the first anti-rotation portion 4 (4a) and the second anti-rotation portion 4 (4b), braking in the rotational direction is performed from the anti-rotation portions 4a and 4b through the groove inner surface of the long groove 9. It can be transmitted to the frame end portion 7 and can be prevented from being transmitted to the axle 2.

  13A, 13B, and 13C show a form in which the present invention is applied to the coaster brake device 43. FIG. FIG. 14 shows a conventional coaster brake 44. First, a characteristic structural part in the present invention and a conventional characteristic part will be described, and a common structural part will be described later.

  The coaster hub brake system performs a braking operation by reversing the crank (not shown), but the clutch 46 is connected to the brake shoe 29 by the drive shaft 45 as a drive shaft that is rotatable with respect to the axle 2. As a result, the brake shoe 29 is pressed against one hub shell 47 to be braked. In the prior art shown in FIG. 14, braking at that time is transmitted from the brake arm 48 to the brake arm band fixing portion 49 and to the rod-like frame 50 at a position away from the frame end portion 7. In the present invention shown in FIG. 13, the hub shell 47 is provided with a detent portion 4 on the proximal end side of the male screw shaft portion 5 as an axle that is fixed to one hub shell 47 and protrudes to the outside of the hub shell 47. By fitting the stop portion 4 into the wheel bearing groove 18 formed of a long groove of the frame end portion 7, the rotation of the one hub shell 47 is prevented and integration with the frame end portion 7 is achieved. Therefore, in the present invention, the reaction force at the time of braking is transmitted to the frame end portion 7 so as to flow, whereas in the conventional case, at a position far from the frame end portion 7 than the frame end portion. The reaction force at the time of braking is transmitted through the part with low rigidity.

  Next, in the structure shown in FIGS. 13 and 14, as a common part structure, a brake shoe 29 is arranged in one hub shell 47, and the split type axle 2 on one hub shell 47 side and the other hub shell 47b side are divided. The type axle 2 can be separated / coupled via a clutch 46, and the clutch 46 includes a frustoconical outer peripheral surface 51.

  A drive shaft 45 as a drive shaft fixed to the sprocket 52 is fixed to the other hub shell 47b, and a chain (not shown) is wound around the sprocket 52. In FIG. 13, when the clutch is connected, the frustoconical outer peripheral surface 51 of the clutch 46 spreads the brake shoe 29 and is crimped to the inner peripheral surface of one hub shell 47. The reaction force during braking is transmitted from the portion 4 to the frame end portion 7. 13A, when the clutch 46 is connected and the frustoconical outer surface 51 is moved and pressed into the brake shoe 29, the frustoconical outer surface 51 causes the brake to The hub 29 is indicated by a two-dot chain line by pressing the shoe 29 toward the outer side in the radial direction and pressing it against one hub shell 47 while rotating integrally with the clutch 46 as indicated by the two-dot chain line on the right side. In order to receive the torsional moment in the direction, the anti-rotation part 4 similarly receives the torsional moment in the direction indicated by the two-dot chain line, and finally from the anti-rotation part 4 to the frame end part 7 in the direction indicated by the two-dot chain line. I am trying to receive it. Therefore, a bending moment and a twisting moment are prevented from acting on the male screw shaft portion 5.

  Next, a modification of the form shown in FIG. 3 will be described with reference to FIGS. In FIG. 3, the male screw shaft portion 5 and the anti-rotation portion in the mount 1 integrally having the male screw shaft portion 5 and the anti-rotation portion 4 that function as a part of the axle directly in the groove portion 19 provided in the frame end portion 7. 15 to 19, in the form shown in FIGS. 15 to 19, the insertion part 58 of the presser fitting 30 and the axle attached thereto are inserted into the groove part 19 (corresponding to the long groove 9) of the frame end part 7. Are arranged together. Accordingly, the axle is indirectly received through the insertion portion 58 that also serves as the rotation preventing portion 4. Further, in the form shown in FIGS. 15 to 19, the frame end portion 7 is formed as an inverted U-shaped frame end portion 7 with a downward opening provided with a long groove 9 having a locking groove, and the frame end portion 7 has a seat. The ends of the frame such as stays or chain stays are fixed by welding or the like. As described above, the end portion of the axle 2 is attached to the insertion portion 58 on the side of the presser fitting 30, and the insertion portion 58 also serves as an anti-rotation portion, together with the insertion portion 58 of the presser fitting 30. Is arranged in the long groove 9 of the frame end portion 7.

  More specifically, as shown in FIGS. 15 and 16, the inverted U-shaped frame end portion 7 having a downward opening includes front and rear arm portions 59 that face each other at intervals, and each arm portion. The upper connection part 60 which connects 59 is provided. Each arm portion 59 has a lower locking groove 61 at the center in the width direction on the lower surface side, and is connected to the lower locking groove 61 at the center portion in the width direction of the opposing inner surface of each arm portion 59. Parallel inner locking grooves 62 extending in the vertical direction are provided, and an upper locking groove 63 connected to the inner locking grooves 62 is provided at the center in the width direction on the lower surface side of the upper connecting portion 60. The long groove 9 is provided with a locking groove on the entire circumference along the inner circumferential surface of the long groove. Further, a locking hook 64 in the binder metal 68 is fixed to the outer surface of each arm portion 59.

  Also, as shown in the lower part of FIG. 16, the presser fitting 30 includes a wide presser fitting main body portion 30a and an insertion portion 58 that rises upward from the center in the width direction of the presser fitting main body portion 30a. Side locking flanges that are T-shaped members and extend in the vertical direction so as to project from both the front and rear sides and the upper portion of the insertion portion 58 and the presser fitting main body portion 30a from the central portion in the member thickness direction. 65, an upper locking flange 66 extending in the left-right direction, and a lower locking flange 67 are provided so as to be sequentially connected to form an inverted U-shaped locking flange as a whole. In addition, the binder metal body 68a of the binder metal 68 is provided on each of the front and rear sides of the presser metal body 30a. The binder metal 68 includes a binder metal body 68a attached to the presser metal body 30a side and the locking hook 64. The binder metal body 68a and the locking hook 64 can be fastened and released by locking or releasing a locking horizontal shaft 69 described later on the binder metal body 68a side to the locking hook 64. Thereby, the presser fitting main body 30a and the frame end 7 can be attached and detached.

  Next, the configuration of the binder metal member 68 other than the locking hook 64 will be described with reference to FIG. Each of the binder fittings 68 includes a pair of Z-shaped locking horizontal shaft support arms 70 that support the locking horizontal shaft 69 on the arm distal end side, and a base end of the locking horizontal shaft support arm 70. A Z-shaped pulling arm 71 arranged in a front view so as to overlap the tip end side, a manual lever 74 having a base end side connected to the base end side of the pulling arm 71 by a first horizontal shaft 72; A support bracket 77 connected to the distal end portion of the manual lever 74 by a second horizontal shaft 76 and fixed to the insertion fitting main body 30a by a male screw or the like is provided. The manual lever lever 74 is rotatably supported by the second horizontal shaft 76 by fixing the support fitting 77 having a bolt hole for fixing with a bolt or the like to the presser fitting main body 30a side. . A proximal-side spring receiver 78 that projects in the lateral direction is provided at the proximal end of the locking horizontal shaft support arm 70, and a distal-side spring that projects in the lateral direction at the distal end of the pulling arm 71. A receptacle 79 is provided. The distal end side spring support 79 of the locking horizontal shaft support arm 70 and the proximal end side spring support 78 of the pulling arm 71 are engaged with each other and are externally provided on the outer side of the intermediate portion of the overlapped arms. A coil spring 73 is interposed as shown. Since the locking horizontal axis support arm 70 is Z-shaped when viewed from the front, a support step 80 is formed at an intermediate portion of each locking horizontal axis support arm 70, and the leading end of the pulling arm 71 is It is supported by the support step 80 and its movement toward the tip side is restricted, and a gap is formed between the manual lever 74 and the pulling arm 71 so that the coil spring 73 can be arranged.

  The first horizontal shaft 72 is rotatable around the second horizontal shaft 76 together with the manual lever 74, and the first horizontal shaft 72 is manually operated while the locking horizontal shaft 69 is locked to the locking hook 64. By rotating the lever 74 so as to pull the pulling arm 71, the coil spring 73 is pressed by the pulling arm 71 and operated so as to pull the horizontal axis support arm 70 for locking by the coil spring 73. Specifically, the binder metal body 68a is moved to the locking hook 64 side, and the presser metal fitting 30 is crimped to the frame end portion 7 side. Further, in a side view, the line segment connecting the first horizontal shaft 72 and the locking horizontal shaft 69 is set on the inner side (insertion fitting main body 30a) than the second horizontal shaft 76. The reverse rotation of the manual lever 74 is prevented.

  The insertion portion 58 is provided with a female screw hole 75 for screwing the male screw shaft portion 5 at one end of the axle 2, and the male screw shaft portion 5 at one end of the axle is screwed and fixed to the female screw hole 75. ing. As shown in FIG. 17, the large-diameter male screw shaft portion 5 a of the axle is screwed and fixed to the female screw cylinder 3 on the mount 1 side, and the outer surface of the mount 1 is pressure-bonded to the inner surface of the insertion portion 58. Thus, the presser fitting 30 provided with the mount 1 and the insertion portion 58 is integrated, the presser fitting 30 provided with the insertion portion 58 is fitted into the frame end portion 7, and the locking hook of the frame end portion 7 is fitted. The holding metal 30 can be fixed to the frame end portion 7 by locking the locking horizontal shaft 69 of the binder metal 68 to 64 and rotating the lever 74 downward. In the case of this configuration, the insertion portion 58 and the frame end portion 7 of the presser fitting 30 are configured such that movement in the longitudinal direction of the axle is restricted by one of the respective locking flanges and the other of the respective locking grooves. On the contrary, since each of the locking grooves is provided on one side, the locking flanges may be provided on the other side. Further, in the form shown in FIGS. 15 to 18, as in the form shown in FIG. 3, the holding metal fitting is provided by the nut 12 (see FIG. 1) and the mount 1 that are attached to the male screw shaft part 5 outside the frame end part 7. Compared to the case where the position in the longitudinal direction of the axle between the frame 30 and the frame end portion 7 is restrained, the position of the retainer 30 and the frame end portion 7 restrains the position in the longitudinal direction of the axle. The mount 1 to be crimped to the end portion 7 can be attached with high accuracy.

  In the case of the form shown in FIGS. 15 to 18, the reaction force when the disc brake rotor 14 is gripped and braked by the caliper 15 rotates from the caliper 15 via the mount 1 that fixes the caliper 15. From the insertion portion 58 as a stop portion, it can be transmitted from here to the frame end portion 7 that supports it, and then flowed to the bicycle frame and not transmitted to the axle 2.

  When practicing the present invention, the non-circular hole may have a form other than that shown, for example, a rectangle, a pentagon, a hexagon, and the like.

DESCRIPTION OF SYMBOLS 1 Mount, disk mount 2 Axle 3 Female screw cylinder 4 Anti-rotation part 4a 1st anti-rotation part 4b 2nd anti-rotation part 4c Cross-shaped convex part 5 Male screw shaft part 5a Large-diameter male screw shaft part 6 Shaft part 5 A portion 7 protruding outward in the radial direction Frame end portion 7a Frame end main body 7b Frame end portion 9 Long groove 10 Hub shaft 11 Male thread portion 12 Nut 12b Nut 13 Hub 13a Hub main body 14 Disc brake rotor 15 Caliper 16 Bolt 17 Axle receiving groove, Wheel bearing hole 18 Wheel bearing hole 18a Reversed T-shaped groove 18b T-shaped groove 19 Groove part 20 Wire receiving part 21 Wire buckle 22 Disc brake device 23 Band brake device 24 Servo brake device 25 Roller brake device 26 Lever 27 Outside Shell cover 28 Band 29 Brake shoe 30 Presser foot Tool 30a Presser fitting main body 31 Brake drum 32 Annular convex 33 Square female screw member 34 Groove 35 Reinforced steel plate 36 Third anti-rotation member 37 Fourth anti-rotation member 38 Plate side surface 39 Inner side surface 40 Cam 41 Hollow shaft cam 42 Roller 43 Coaster brake device (of the present invention)
44 Coaster brake device (conventional)
45 Drive shaft 46 Clutch 47 Hub shell (one side)
47b Hub shell (the other)
48 Brake arm 49 Brake arm band fixing part 50 Rod-like frame 51 Frustum-shaped outer peripheral surface 52 Sprocket 53 First hole 54 Second hole 55 Axle center 57 Chain stay 58 Insertion part 59 Arm part 60 Upper connection part 61 Lower locking groove 62 Inner locking groove 63 Upper locking groove 64 Locking hook 65 Side locking flange 66 Upper locking flange 67 Lower locking flange 68 Binder metal 68a Binder metal main body 69 Locking horizontal shaft 70 Stop horizontal support arm 71 Pulling arm 72 First horizontal shaft 73 Coil spring 74 Manual lever 75 Female screw hole 76 Second horizontal shaft 77 Support bracket 78 Base end side spring receiver 79 Front end side spring receiver 80 Anti-rotation receiver 81 Pin insertion hole 82 Pin 83 Metal ring annular ring 83a Inner teeth 84 Gear member 84a Outer teeth 85 Presser washer

Claims (4)

In a braking method for a hub brake in a bicycle, an axle bearing hole formed by a non-circular hole is provided in an axle bearing portion for receiving an axle provided in a frame end portion of a bicycle frame, and the axle bearing side is provided in the axle bearing hole. The rotation prevention part provided in is fitted to prevent rotation of the axle, and the rotation prevention part has an outer shape slightly smaller than the non-circular hole,
The frame end portion includes a frame end main body and a detent receiving portion for receiving the detent portion, and the detent receiving portion is an internal tooth in which irregularities are alternately formed along the inner surface in the inner circumferential direction. A non-rotating support portion, the anti-rotation receiving portion is detachably attached to the frame end body in the frame end portion,
The frame end main body has six pin insertion holes at equiangular intervals in the circumferential direction around the center axis of the wheel bearing hole, and the pin provided in the rotation stopper receiving portion in the pin insertion hole Is inserted, the frame end body and the anti-rotation receiving portion are locked,
The anti-rotation portion is formed by integrally fixing a gear-shaped member having external teeth formed with irregularities alternately along the outer peripheral surface in the outer peripheral direction to an intermediate portion of an axle integrated with a disk mount. ,
The gear-shaped member is provided at a distance from the disk mount main body, and the frame end main body can be disposed in a gap between the gear-shaped member and the disk mount main body.
By fitting the internal teeth of the anti-rotation receiving part and the external teeth of the gear-shaped member, the anti-rotation part and the frame end part are fixed,
When the brake is applied, the anti-rotation portion is supported from the anti-rotation portion to the frame end portion, and the anti-rotation portion fitted in the axle bearing hole transmits the reaction force during braking to the frame end portion during braking. A hub brake braking method for a bicycle, characterized in that the starting point is a starting point. A device used in the method for braking a hub brake in a bicycle according to claim 1 , wherein the anti-rotation portion fitted so as to be embedded in the axle bearing hole is provided in the shaft portion of the mount, and the disc caliper is supported. The mount is joined to the axle, the shaft portion of the mount and the axle are disposed on the same center axis, and the shaft portion of the mount is a shaft portion disposed in the axle bearing groove or the axle bearing hole. Bicycle equipment characterized by that. 3. The bicycle-use bicycle according to claim 2 , wherein the anti-rotation portion fitted into the wheel bearing hole formed of a non-circular hole has a convex portion protruding outward in the radial direction at intervals in the circumferential direction. Instruments. The device used for the hub brake braking method for a bicycle according to claim 1 , wherein the anti-rotation portion fitted to be embedded in the anti-rotation receiving portion having the internal teeth at the frame end portion is mounted on the shaft of the mount. The bicycle device according to claim 3 , wherein the anti-rotation portion has external teeth having irregularities alternately formed along an outer peripheral surface in an outer peripheral direction.

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