BRPI1003248B1 - STRUCTURE AND METHOD OF POSITIONING AND REPLACING THE REAR WHEEL OF A MOTORCYCLE - Google Patents

Abstract

The structure and method of affixing and detaching a motorcycle rear wheel The present invention relates to a structure for eliminating the need for affixing and detaching a rear shock absorber assembly (28) and a disc brake and thus, facilitate the work of affixing and detaching a rear wheel (8) with respect to a frame, and a method of affixing and detaching a rear wheel of a motorcycle (1) in which the rear wheel is removably adapted to the steering side on a drive member (51) configured to revolve in response to a motor (14). A front end portion (34a) of a torsion bar (34) is connected to a swing arm (9) with a drive shaft. front linkage (54) between them, such that the torsion bar is able to swing up and down, the front linkage shaft extending in a left - right direction. a front connecting part (56) configured to jointly connect the front end part (34a) of the torsion bar (34) and the swingarm (9) allows the torsion bar to swing outwards laterally. thereby the torsion bar, caliper bracket (33) and brake caliper (32) become able to swing up and down to positions which allow a rear wheel (8) to move toward a right arm member (9b).

Description

Descriptive Report of the Invention Patent for STRUCTURE AND METHOD OF ATTACHING AND DETACHING THE REAR WHEEL OF A MOTORCYCLE.

Technical Field [001] The present invention relates to a structure and a method of affixing and detaching a rear wheel of a motorcycle.

Background Technique [002] Conventional motorcycles include a motorcycle whose rear wheel section is configured as follows. On an axle provided on a rear portion of a swing arm, the rear wheel section has: a drive member configured to revolve in response to an engine; a rear wheel removably adapted to the driving member in the lateral direction; a brake disc attached to a side surface of the rear wheel, which is opposite the drive member; and a caliper bracket that supports a brake caliper configured to insert and press the brake disc. The brake caliper and caliper support are connected to the swing arm with the torsion bar being interposed between them. A front end part of the torsion bar is rotatably connected to the swing arm using a vertical axis orthogonal to the left - right direction (see Patent Document 1, for example).

[003] This configuration causes the rear wheel to be affixed and detached, as follows. The brake caliper is moved upwards in relation to the brake disc. In this way, the brake disc and the brake caliper are detached from each other. After that, the torsion bar, the caliper support and the brake caliper are rotated outwards around the vertical axis. Hereby, a space, which allows the rear wheel to be freed from being adapted to the drive member, is secured on one side of the rear wheel. Of this

Petition 870180055605, of 06/27/2018, p. 5/53

2/41 mode, the rear wheel can be detached from the drive member. Prior Art Document

Patent Document [004] Patent Document 1 Examined Patent Publication Japanese Sho N ° Sho 62-26951.

Summary of the Invention

Problems to be solved by the invention [005] However, the prior art has the following problems. In general, when viewed from the side, the torsion bar intersects a rear buffer assembly positioned laterally out of the torsion bar. For this reason, the rear shock absorber assembly interferes with the operation for rotating the torsion bar outward. This requires the additional work of removing the rear shock absorber assembly, and therefore complicates the job of affixing and detaching the rear wheel.

[006] With this in mind, an objective of the present invention is to eliminate the need to affix and detach the rear shock absorber assembly and the brake disc, and, therefore, facilitate the work of affixing and detaching the rear wheel, with respect to structure for and the method of affixing and detaching a rear wheel of a motorcycle, in which the rear wheel configured to revolve in response to the engine is removably adapted to the driving member in the lateral direction.

Problem Resolution Means [007] For the purpose of solving the problems mentioned above, an invention as recited in claim 1 provides a structure for affixing and detaching a rear wheel of a motorcycle (for example, a motorcycle 1 in modalities). The motorcycle includes: a swing arm (for example, a swing arm 9 in modes) that pivotally supports the rear wheel (for example

Petition 870180055605, of 06/27/2018, p. 6/53

3/41 plo, a rear wheel 8 in the modalities) between the left and right arm members thereof; a drive member (for example, a driven flange 51 in the modalities) supported by one (for example, a right arm member 9a in the modalities) of the swing arm arm members, and configured to revolve in response to the activation of an engine (for example, an engine 14 in the modalities); and a disc brake configured between the other (e.g., a left arm member 9b in the embodiments) of the swing arm members and the rear wheel. The disc brake includes: a brake disc (for example, a brake disc 31 in the modalities) attached to the rear wheel; a brake caliper (for example, a brake caliper 32 in the modalities) configured to insert and press the brake disc; a caliper support (for example, a caliper support 33 in the modalities) that supports the brake caliper on a rear wheel axle; and a torsion bar (e.g., a torsion bar 34 in the embodiments) including a rear end portion (e.g., a rear end portion 34b in the embodiments) connected to the collet holder, and including a front end portion ( for example, a front end part 34a in the modalities) connected to the swing arm. The rear wheel is removably adapted to the drive member from one side of the other arm member. The structure is characterized by the fact that: the front end part of the torsion bar is connected to the swing arm with a front connecting shaft (for example, a front connecting shaft 54 in the modalities) between them, in such a way that the torsion bar is able to oscillate up and down, the front connection axis extending in a left - right direction; and the torsion bar, caliper holder and brake caliper are made capable of swinging up and down to positions which allow the rear wheel to move

Petition 870180055605, of 06/27/2018, p. 7/53

4/41 towards the other arm member.

[008] An invention, as recited in claim 2, provides the structure characterized by also including a rear buffer assembly (for example, a rear buffer assembly 5 in the modalities) that extends between and connects the other arm member and a vehicle body structure frame (for example, a vehicle body structure frame 5 in the modalities) and characterized by the fact that the rear shock absorber assembly is positioned towards an external side of the torsion bar, in order to intercept the torsion bar when viewed from the side.

[009] An invention, as recited in claim 3, provides the structure characterized by the fact that the rear shock absorber assembly is positioned in front of the rear end part of the torsion bar, the caliper support and the brake caliper.

[0010] An invention, as recited in claim 4, provides the structure characterized by the fact that: a front connection part, (for example, a front connection part 56 in the modalities) allows the torsion bar to swing outwards, the front connection part being configured to connect the front end part of the torsion bar and the swing arm together; and the front connecting part includes a front elastic member (e.g., a front elastic member 56a in the embodiments) configured to orient the front connection axis in an axial direction thereof.

[0011] An invention, as recited in claim 5, provides the structure characterized by the fact that: a brake tube (for example, a brake tube 35 in the modalities) is arranged along any one between a top surface and a bottom surface of the torsion bar, the brake tube extending from a master cylinder to the brake caliper; and, while being placed in this condition 870180055605, of 06/27/2018, p. 8/53

5/41 tion, the brake tube be maintained by the torsion bar.

[0012] An invention, as recited in claim 6, provides the structure characterized by the fact that: the clamp support is connected to the rear end of the torsion bar with a rear connecting shaft (for example, a rear connecting shaft 55 in the modalities) between them, in order to be able to oscillate up and down, the rear connection axis extending in the left - right direction; a rear connection part (for example, a rear connection part 57 in the modalities) allows the collet support to swing outwards laterally, the rear connection part being configured to connect the rear end part of the torsion bar together and the clamp support; and the rear connection part includes a rear elastic member (for example, a rear elastic member 57a in the embodiments) configured to orient the rear connection axis in the axial direction.

[0013] An invention, as recited in claim 7, provides the structure characterized by the fact that the driving member and the rear wheel are adapted to each other with an elastic power transmission member (for example, a damping member 53 in the modalities ) between them.

[0014] An invention, as recited in claim 8, provides the structure characterized by the fact that an opening (for example, an opening 61 in the modalities) into which the brake caliper will enter having oscillated up and down around the axis of front connection be formed on the rear wheel side including the brake disc.

[0015] An invention, as recited in claim 9 provides a method of affixing and detaching a rear wheel of a motorcycle. The motorcycle includes: a swing arm (for example, swing arm 9 in the sports) that pivotably supports the rear wheel (for example, a rear wheel 8 in sports) en

Petition 870180055605, of 06/27/2018, p. 9/53

6/41 between the left and right arm members; a drive member (for example, a driven flange 51 in the modalities) supported by one (for example, a right arm member 9a in the modalities) of the swing arm arm members, and configured to revolve in response to the activation of an engine (for example, an engine 14 in the modalities); and a disc brake configured between the other (e.g., a left arm member 9b in the embodiments) of the swing arm members and the rear wheel. The disc brake includes: a brake disc (for example, a brake disc 31 in the modalities) attached to the rear wheel; a brake caliper (for example, a brake caliper 32 in the modalities) configured to insert and press the brake disc; a caliper support (for example, a caliper support 33 in the modalities) that supports the brake caliper on a rear wheel axle; and a torsion bar (e.g., a torsion bar 34 in the embodiments) including a rear end portion (e.g., a rear end portion 34b in the embodiments) connected to the collet holder, and including a front end portion ( for example, a front end part 34a in the modalities) connected to the swing arm. The rear wheel is removably adapted to the drive member from one side of the other arm member. The method is characterized by the fact that it includes the steps of: swinging the torsion bar, the caliper support and the brake caliper up and down around a front connecting shaft (for example, the rear connecting shaft 55 in modalities), which together connects the front end part of the torsion bar and the swing arm, and extends in a left - right direction; release the brake caliper from its fitting with the brake disc; thereafter, oscillation of the rear end part side of the torsion bar sideways outwards around the front end part side of the torsion bar

Petition 870180055605, of 06/27/2018, p. 10/53

7/41 twist; and, while the torsion bar is placed in the oscillated condition, the oscillation of the torsion bar, the caliper bracket and the brake caliper up and down, to positions which allow the rear wheel to move towards the other arm member.

[0016] An invention, as recited in claim 6, provides the method characterized by the fact that it also includes the steps of: tilting the rear wheel after the step of releasing the brake caliper from its fitting with the brake disc; and after that, while the rear wheel is placed in an inclined condition, the torsion bar, caliper support and brake caliper swing up and down to the positions which allow the rear wheel to move in the direction to the other arm member.

Effects of the Invention [0017] The invention, as recited in any one of claims 1 and 2, allows the rear wheel to be moved towards a side opposite the driving member for the purpose of releasing the rear wheel and the driving member from being adapted to each other. Specifically, the invention allows the torsion bar, caliper holder and brake caliper to oscillate up and down mainly around the front connecting axle. In this way, the invention makes it unnecessary to cause the torsion bar, the caliper support and the brake caliper to oscillate to the outside of the swing arm to a large extent. Also, in the case where the rear shock absorber assembly is positioned laterally out of the torsion bar, the invention saves problems of fixing and detaching the rear shock absorber assembly and the brake disc itself, and the like, and, thus, facilitates the work of posting and detaching the rear wheel.

[0018] The invention, as recited in claim 3, makes it easier to ensure, at the rear of the rear shock absorber assembly, a

Petition 870180055605, of 06/27/2018, p. 11/53

8/41 space in which the caliper support and the brake caliper oscillate, thus facilitating the work of fixing and detaching the rear wheel. [0019] Even in a case where the front connection part is configured to allow the torsion bar and the like to oscillate in the lateral direction through the use of games, which the front connection part has in the axial direction of the axle. front connection and in a direction orthogonal to this axial direction, the invention, as recited in claim 4, can prevent the front connection part from creaking due to games during normal operation. For this reason, the invention makes it easy to ensure space for the torsion bar and the like to oscillate in the lateral direction. Furthermore, the invention makes it easy to swing the torsion bar, the caliper bracket, the brake caliper up and down, even in the case where the brake caliper is configured so that its part enters the interior of the rear wheel for the purpose of reducing the left - right width of the rear wheel and its proximity.

[0020] The invention, as recited in claim 5, prevents the brake tube from being caught between the rear shock absorber assembly and the torsion bar, even in a case where the rear shock absorber assembly is positioned laterally out of the torsion bar . For this reason, the invention makes it possible to swing the torsion bar in the lateral direction to an extent such that the torsion bar contacts the rear shock absorber assembly. Therefore, the invention makes it easy to secure the space for the torsion bar and the like to oscillate in the lateral direction. In addition, the invention makes it easy to swing the torsion bar, the caliper bracket, the brake caliper up and down, even in a case where the brake caliper is configured so that its part enters the rear wheel for the purpose of reducing the left - right width of the rear wheel and its proximity. Furthermore, the invention makes it possible to move the brake tube in response to the torsion bar oscillation, because the brake tube is held by the

Petition 870180055605, of 06/27/2018, p. 12/53

9/41 twist. Thus, the invention still makes it easy to swing the torsion bar, the caliper support and the brake caliper further up and down.

[0021] The invention, as recited in claim 6, allows the caliper holder and the brake caliper to be oscillated laterally outward on the rear end side side of the torsion bar. Furthermore, the invention makes it easy to swing the torsion bar, the caliper holder and the brake caliper up and down, even in a case where the brake caliper is configured so that its part enters the interior of the rear wheel for the purpose of reducing the left - right width of the rear wheel and its proximity.

[0022] The invention, as recited in claim 7, makes it possible to perform a job, such as an oscillation of the torsion bar, the caliper support and the brake caliper up and down with the rear wheel being tilted. Therefore, the invention still makes it easy to swing the torsion bar and the like up and down and thus can facilitate the work of fixing and detaching the rear wheel.

[0023] The invention, as recited in claim 8, causes the brake caliper to be detached from the brake disc by the oscillation of the torsion bar, the caliper support and the brake caliper up and down mainly around the front connecting axle. Thereafter, the invention causes the rear wheel to be moved towards the side opposite the driving member, in such a way that the brake caliper enters the opening formed on the rear wheel side. Therefore, the invention allows the rear wheel and the driving member to be freed from being adapted to each other, and thus can facilitate the work of affixing and detaching the rear wheel.

[0024] The invention, as recited in claim 9, allows the rear wheel to be moved towards the side opposite the drive member for the purpose of releasing the rear wheel and member

Petition 870180055605, of 06/27/2018, p. 13/53

10/41 of activation to be adapted to each other. In this way, the invention can facilitate the work of affixing and detaching the rear wheel.

[0025] The invention, as recited in claim 10, makes it easy to swing the caliper support and the brake caliper up and down, because the rear wheel is tilted. Therefore, the invention can facilitate the work of affixing and detaching the rear wheel. Brief Description of the Drawings [0026] Figure 1 is a left side view of a motorcycle in one embodiment of this invention.

[0027] Figure 2 is a rear view that includes a partial cross section of a rear motorcycle axle above and its proximity.

[0028] Figure 3 is a right side view of a rear motorcycle wheel above and its proximity.

[0029] Figure 4 is a top view that includes a partial cross section of the rear axle of the motorcycle above and its surroundings.

[0030] Figure 5 is a right side view of a condition in which a torsion bar, caliper support and brake caliper are oscillated upwards, when the rear wheel is detached from the motorcycle.

[0031] Figure 6 is a top view of a condition in which the torsion bar, the caliper support and the brake caliper are oscillated laterally after being placed in the condition as shown in figure 5.

[0032] Figure 7 is a top view of a condition in which the torsion bar, the caliper support and the brake caliper are more oscillated laterally outward, after being positioned in the condition as shown in figure 6.

Petition 870180055605, of 06/27/2018, p. 14/53

11/41 [0033] Figure 8 is a right side view of a condition in which the torsion bar, caliper holder and brake caliper are additionally swung upwards after being positioned in the condition as shown in figure 6 or in figure 7.

[0034] Figure 9 is a rear view of a condition in which the rear wheel is moved laterally after being positioned in the condition as shown in figure 8.

[0035] Figure 10 is an explanatory view showing a condition in which the front and rear end parts of the torsion bar are positioned when the torsion bar, the caliper support and the brake caliper are oscillated laterally outward.

[0036] Figure 11 is a rear view of a condition in which the rear wheel is tilted after being positioned in the condition as shown in figure 5.

[0037] Figure 12 is a right side view in a second embodiment of this invention, the right side view corresponding to the figure

5.

[0038] Figure 13 is a rear view of a condition in which the rear wheel is moved laterally after being positioned in the condition as shown in figure 12.

Best Modes for Carrying Out the Invention [0039] From this point on, descriptions will be provided for the modalities of this invention with reference to the drawings. Note that in the following descriptions, directions such as front, rear, left and right, respectively, coincide with directions with respect to the vertical axis, unless otherwise stated. Furthermore, in the drawings, an arrow FR denotes a forward direction of the vehicle, an arrow LH denotes a direction to the left of the vehicle, and an UP arrow denotes an upward direction of the vehicle.

Mode 1

Petition 870180055605, of 06/27/2018, p. 15/53

12/41 [0040] On a motorcycle (mounted type vehicle) 1 shown in figure 1, a front wheel 2 of it is pivotally supported by lower end parts of left and right front forks in pairs 3 respectively. An upper portion of each front fork 3 is pivotally supported by a front tube 6, so as to be able to be steered, the front tube 6 positioned at a front end of a vehicle body frame 5 through a steering column 4. A steering handle 7 for steering the front wheel is mounted on an upper portion of the steering column 4. A rear wheel (driving wheel) 8 of motorcycle 1 is pivotally supported on a rear end part of a swing arm 9.

[0041] The vehicle body structure frame 5 mainly includes a main frame 11 which extends backwards from an upper part of the front tube 6 and thereafter flexes downwards. A pivot support 12 for supporting a front end part of the swing arm 9 is integrally provided on a bottom side of a rear portion of the main frame 11. A low frame 13 extends obliquely back and down from a lower portion of the front tube 6. A front end portion of a crankcase 15 of an engine 14 mounted within the vehicle body frame 5 is supported by a lower portion of the lower frame 13. A rear end portion of the crankcase 15 is supported by a front portion of the pivot support 12.

[0042] The engine 14 has a basic structure in which a cylinder 16 tilted slightly forward is provided vertically in the crankcase 15. An exhaust pipe 17 is connected to a front portion of the cylinder

16. The exhaust pipe 17 is curved to pass in front of and under the crankcase 15, and extends backwards, as well as being connected to a muffler 17a placed on the right side of a rear portion of the es

Petition 870180055605, of 06/27/2018, p. 16/53

13/41 vehicle body structure. The fuel supply equipment, which includes a carburetor and a choke body, is connected to a rear portion of the cylinder 16. An air filter box 18a is connected to a rear of the fuel supply equipment 18.

[0043] Note that: the reference number 19 in the drawing denotes a seat frame that constitutes a rear portion of the vehicle body structure frame 5; reference number 21, a saddle mount seat, on which a driver is seated, supported on a seat frame 19; and reference number 22 a fuel tank supported on the main frame 11 in front of the seat. In addition, the reference number 23 in the drawing denotes a windshield that is in a front portion of the vehicle body structure; reference number 24, a front fairing for covering the front portion of the vehicle body structure; reference number 25, a lower fairing for covering a lower portion of the vehicle body structure; reference number 26, a side fairing for covering a side portion of the vehicle body structure; and reference number 27 a rear fairing for covering a rear portion of the vehicle body structure.

[0044] The seat frame 19 is mainly composed of: paired left and right seat rails 19a that extend substantially horizontally backwards from a rear side of a rear portion of the main frame 11; and paired left and right support tubes 19b, each extending between a middle portion along the length of a corresponding rail of the left and right seat rails 19a and the pivot support 12, so as to ascend obliquely backwards. Each of the left and right rear shock assemblies 28 is positioned

Petition 870180055605, of 06/27/2018, p. 17/53

14/41 between a rear end part (upper end portion) of a corresponding tube of the left and right support tubes 19b and a corresponding member of the left and right arm members 9a, 9b of the swing arm 9, so as to be leaning forward.

[0045] With reference to figure 3, the rear shock absorber 28 includes: a rod-type shock 28a; a spiral spring 28b positioned to be wound around the damper 28a; and a first and a second spring-loaded leaf 28c, 28d positioned on the respective two end sides of the damper 28a and thus supporting the upper and lower end portions of the spiral spring 28b.

[0046] For example, with a cylindrical cylinder tube circular upwards and a rod-shaped piston rod downwards, the damper 28a is positioned with a longitudinal direction of it tilted in a way that a perpendicularly higher position of the the longitudinal direction is located further ahead than a perpendicularly lower position, the rod-shaped piston rod extending from an alternating piston in the cylinder tube. An upper connection part 28e for connecting the shock absorber 28a to the vehicle body structure 5 is provided in an upper end portion of the shock absorber 28a (the piston rod). A lower connection part 28f for connecting the damper 28a to the swing arm 9 is provided with a lower end part of the damper 28a (the cylinder tube).

[0047] The first leaf with spring 28c for supporting an upper end part of the spiral spring 28b is integrally provided in the upper connection part 28e. The second spring-loaded leaf 28d for supporting a lower end portion of the spiral spring 28b is integrally provided on the outer periphery of a lower portion

Petition 870180055605, of 06/27/2018, p. 18/53

15/41 of the cylinder tube.

[0048] A secondary tank 29 that is filled with hydraulic oil, a gas under pressure and the like from the inside of the shock absorber 28a is provided on a rear side of a lower portion of the rear shock absorber assembly 28. The external shape of the secondary tank 29 it is shaped like a circular cylinder. The secondary tank 29 is positioned at the rear of the rear shock absorber assembly 28 substantially in parallel with the rear shock absorber assembly 28. A tank support 29a is integrally provided obliquely behind and above the lower connection part 28f. A lower end portion of the secondary tank 29 is attached to a front end side of the tank support 29a. The secondary tank 29 does not project laterally inward (inward in the left - right direction of the vehicle body structure) to extend beyond an inner end of the rear shock assembly 28 (an inner end of the spiral spring 28b).

[0049] With reference to figure 4 in combination, the swing arm 9 is integrally configured mainly by including: paired left and right arm members 9a, 9b extending from front to rear; and a cross member 9c for connecting the front portions of the respective left and right arm members 9a, 9b. The rear wheel 8 is positioned between the rear portions of the respective left and right arm members 9a, 9b. The rear wheel 8 is supported by rear end portions of the respective left and right arm members 9a, 9b with a rear axle (rear wheel axle) 10 between them, which extends in the left - right direction (the width direction) vehicle). The front end portions of the swing arm 9 (the left and right arm members 9a, 9b) are pivotally supported by the pivot support 12 of the vehicle body frame 5

Petition 870180055605, of 06/27/2018, p. 19/53

16/41 through a pivot axis 9d between them, which extends in the left - right direction, in such a way that the swing arm 9 is able to swing up and down.

[0050] Between the rear portion of the right arm member 9b of the swing arm 9 and the rear wheel 8, a rear disc brake is configured primarily by including: a brake disc 31 attached to the right side of the rear wheel 8; and a brake caliper 32 for inserting and pressing the brake disc 31. The brake caliper 32 is pivotally supported on the rear axle 10 with a caliper support 33 being interposed between them. The caliper bracket 33 and the brake caliper 32 are connected to the cross member 9c with a torsion bar 34 between them, thereby being rendered unable to revolve around the rear axle 10. Note that a front disc brake similar to the brake the rear disc is configured between the lower portion of the left or right front fork 3 and the front wheel 2 (whose illustration is omitted).

[0051] Here, the torsion bar 34 is positioned between the inner side of the rear shock absorber assembly 28 and the right outer side of the rear wheel 8, so as to intercept the lower portion of the rear shock absorber assembly 28, when viewed from the side .

[0052] The external shape of the torsion bar 34 is shaped like a square rod, except for its front and rear end parts 34a, 34b. The torsion bar 34 extends linearly from a rear portion of the cross member 9c (a mid-length portion of the right arm member 9b when viewed from the side) to an upper end portion 33c of the support with clamp 33, in order to tilt up and back. The torsion bar 34 is positioned to be tilted more smoothly when viewed from the side (in such a way that, when viewed from the side, an angle between a front side of the lower portion of the rear shock absorber 28 and a surface

Petition 870180055605, of 06/27/2018, p. 20/53

17/41 lower of the torsion bar 34 is more obtuse by lowering the location of the rear end part 34b) than if an angle at which the torsion bar 34 intercepts the rear buffer assembly 28 is orthogonal.

[0053] The rear disc brake is of a hydraulic type. The rear disc brake operates a master cylinder depending on an input from a manipulator, such as a brake pedal (both of which are omitted in the drawings), produces a hydraulic pressure in the master cylinder, and transmits the hydraulic pressure thus produced to the brake caliper. brake 32 through a brake tube 35. In this way, the paired left and right brake pads 36 kept inside the brake caliper 32 interleave and press the brake disc 31.

[0054] The brake caliper 32 is formed by having an outer part 32a and an inner part 32b integrally connected together in a bridge portion located on the outer periphery of the brake disc 31. The outer part 32a is located out of the disc brake pads 31. The inner part 32b is located inside the brake disc 31. The left and right brake pads 36 are held between the outer part 32a and the inner part 32b.

[0055] The outer part 32a has a cylinder 37a and a piston 37b, which extend in the left - right direction, inside. Once the piston 37b is pushed in (towards the brake disc 31) by hydraulic pressure from the master cylinder, the right brake pad 36 is pressed against the outer side of the brake disc 31, and, concurrently, the brake caliper 32 is slid out due to a reaction force to this pressure. In this way, the inner part 32b presses the left brake pad 36 against the inner side surface of the brake disc 31. In this way, the two brake pads 36 interleave and press the brake disc 31.

Petition 870180055605, of 06/27/2018, p. 21/53

18/41 [0056] Note that the rear disc brake according to this modality is a floating caliper type, as described above. However, the rear disc brake according to this modality can be of a type of fixed caliper in which a piston and a cylinder are placed on each of the two sides of the brake caliper 32.

[0057] The brake tube 35 (brake hose) extending from the master cylinder to the brake caliper 32 is arranged along the upper surface of the torsion bar 34, when viewed from the side, and is maintained on the upper surface side of the torsion bar 34 through multiple maintenance clamps (three) 38a, 38b and 38c between them.

[0058] Furthermore, the brake tube 35 is arranged to flex like a crank when viewed from the top. Specifically, in the vicinity of the torsion bar 34, a front portion of the brake tube 35 is held laterally outward (outward in the left - right direction of the vehicle body structure) from the front portion of the torsion bar 34 through the first clamp maintenance 38a between them; a middle portion of the brake tube 35 is held immediately above an average portion of the torsion bar 34 by the use of the second maintenance clamp 38b; and a rear portion of the brake tube 35 is maintained on an inner side (on the inner side of the left - right direction of the vehicle body structure) of the rear end part 34b of the torsion bar 35 with the third maintenance clamp 38c between they.

[0059] Here, the rear buffer assembly 28 is positioned in front of the rear end part 34b of the torsion bar 34, the caliper bracket 33 and the brake caliper 32, when viewed from the side.

[0060] With reference to figures 1 to 4, a driven gear 39 driven in a rotating manner in response to the actuation of the hand

Petition 870180055605, of 06/27/2018, p. 22/53

19/41 tor 14 is positioned between the rear portion of the left arm member 9a of the swing arm 9 and the rear wheel 8. The driven sprocket 39 is connected to a driving sprocket 39a with an endless drive chain 39b between they, the drive sprocket 39a being positioned to the left of a rear portion of the motor 14. The driven sprocket 39, the drive sprocket 39a and the drive chain 39b constitute a chain-type transmission mechanism which it allows power to be transmitted between the rear wheel 8 and the motor 14. The chain-type transmission mechanism is housed within a chain cover 39c attached to the left arm member 9a.

[0061] The rear axle 10 is a long, stepped screw. The rear axle 10 has a head portion 10a at its left end portion and a screw axle 10b at its right end portion. A rear axle part 10 between the head part 10a and the screw axle 10b is an axle part 10c shaped like a circular column. The rear axle 10 pivotally supports the rear wheel 8 between the left and right arm members 9a, 9b, when: the rear axle 10 penetrates, from left to right, into the left and right arm members 9a, 9b , as well as the rear wheel 8 positioned between the left and right arm members 9a, 9b; and an axle nut 10d is screwed and secured to the screw axle 10b projecting to the right beyond the right arm member 9b.

[0062] The rear wheel 8 includes, for example, a fully cast aluminum rear wheel 41 and a tire 42, which is mounted on a rim part 41a on the outer periphery of the rear wheel 41. In a central portion of the rear wheel 41, a hub portion 41b shaped like a circular cylinder is formed. This hub part 41b and the rim 41a are connected together with multiple (five) radius parts

Petition 870180055605, of 06/27/2018, p. 23/53

20/41

41c between them.

[0063] The hub part 41b includes: an outer housing part 41d which forms an external shape of the hub part 41b; a main hub body 41e positioned within the outer housing part 41d with a space interposed between them; and an inner wall part 41f for integral connection of the outer housing part 41d and the main hub body 41e together.

[0064] Paired left and right roller bearings outer bearings 43a, 43b are adapted with pressure on and fixed to both end portions of the main hub body 41b, respectively. The axle part 10c of the rear axle 10 is removably inserted into the left and right roller bearings 43a, 43b.

[0065] Note that in the drawing, the reference number 44 denotes a central distance collar positioned between the left and right bearing bearings 43a, 43b; the reference number 45, a left distance collar inserted in the left side portion of the rear axle 10; the reference number 46, a left outer collar positioned between a left outer bearing bearing 46a positioned at the outer periphery of a middle portion of the left distance collar 45, and the left arm member 9a; reference number 48, a locking nut threaded on the outer periphery of a portion of the left distance collar 45, the portion protruding out of the left arm member 9a; and reference number 49b, a right-sided member positioned on the inner periphery of a distal end portion of the main hub body 41e.

[0066] A flange part 45a is provided vertically on the outer periphery of the middle portion of the left distance collar 45. An inner bearing of the left outer bearing housing 46a is maintained between the left side surface of this flange part 45a and the

Petition 870180055605, of 06/27/2018, p. 24/53

21/41 the right side surface of the left outer collar 46. With this condition being maintained, the locknut 48 is attached to a front end portion of the left distance collar 45. Thus, the left distance collar 45, the left arm member 9a, left outer collar 46, and left inner bearing 46a are integrally secured together.

[0067] A left end surface of the left distance collar 45 constitutes a supporting surface of the head portion 10a of the rear axle 10. When, with the shaft part 10c of the rear axle 10 penetrating the left distance collar 45, the left bearing housing 43a, center distance collar 44, right bearing housing 43b, right collar 47, a protrusion part 33b (base part) of the collet holder 33 and the right arm member 9b, the nut shaft 10d is screwed and attached to the screw shaft 10b of the rear axle 10 projecting to the right of the right arm member 9b, the left distance collar 45, an inner bearing of the left bearing housing 43a, the center distance collar 44, an inner bearing of the right bearing bearing 43b, the right collar 47, the protrusion part 33b and the right arm member 9b are integrally secured together.

[0068] A driven flange 51 configured to maintain the driven sprocket 39 is disposed between a rear portion of the left arm member 9a and the projection portion 33b on the rear wheel 8.

[0069] The driven flange 51 includes: a disc part 51a shaped like a disc, and sharing a geometric axis with the hub part 41b of the rear wheel 8; a flange hub portion 51b shaped like a disk, and formed to the left of the disk portion 51a integrally and coaxially with the disk portion 51a; multiple shock absorber fitting parts 51c formed to the right of the disk part

Petition 870180055605, of 06/27/2018, p. 25/53

22/41

51a integrally with the disc part 51a, so as to be arranged in a circumferential direction of the disc part 51a at equal intervals; and multiple sprocket attachment parts 51d formed to the left of the disc part 51a integrally with the disc part 51a, thus arranged in the circumferential direction of the disc part 51a at equal intervals. In conjunction with driven gear 39 and the like, this drive flange 51 is also housed in chain cover 39c.

[0070] To the left of the hub part 41b, multiple damper fitting walls (not shown) arranged in the circumferential direction at equal intervals are provided within a recess part 52 formed between a left-hand portion of the main hub body 41e and a left-hand portion of the outer housing part 41d. Each of the damping members 53 made of an elastic body, such as rubber, is respectively fitted with these damper fitting walls. The damping members 53 are spaced from each other in the circumferential direction of the hub portion 41b. Thus, the respective damper fitting parts 51c of the driven flange 51 are removably fitted from the left with spaces between each two neighboring damping members 53.

[0071] This allows the torque to be transmitted between the hub part 41b (the rear wheel 8) and the driven flange 51 (the driven sprocket 39) through the multiple damping members 53. On the other hand, when the hub part 41b is moved to the right in relation to driven flange 51, hub portion 41b and driven flange 51 can be detached from each other.

[0072] An external bearing of the left external bearing housing 46a is adapted with pressure on the internal periphery of the flange hub part 51b. Thus, the driven flange 51 is supported

Petition 870180055605, of 06/27/2018, p. 26/53

23/41 integral and rotatable by the left arm member 9a with the left outer bearing bearing 46a, the left distance collar 45 and the like being interposed between them. Note that the reference number 49a denotes a left seal member positioned on the inner periphery of a left end portion of the flange hub portion 51b.

[0073] The clamp support 33 includes: a main support body 33a shaped as a plate substantially orthogonal to the left - right direction, and extending up and down; and a circular cylindrical projection part 33b integrally formed in a lower end portion of the main support body 33a.

[0074] In the main support body 33a, a rear portion of its part between its upper and lower end portions protrudes backwards. Thus, the main support body 33a is formed in a substantially triangular shape seen from the side. The brake caliper 32 is mounted on an inner side of an upper portion of the main support body 33a with a support bracket between them, which is shaped like a thick plate, in such a way that the brake caliper 32 is capable of to slide just a predetermined amount.

[0075] Here, a left - right width of the outer part 32a configured for piston housing 37b is greater than a left - right width of the inner part 32b. Accordingly, the brake caliper 32 is provided so that, as a whole, it projects beyond the outer side of the brake disc 31. On the other hand, the inner part 32b of the brake caliper 32 is provided in a way go inside the rear wheel 8 (one side more internal than the outermost position (indicated by a line L1 in the drawing) of a sidewall of the tire 42).

[0076] The rear end part 34b of the torsion bar 34 is connected to the upper end part 33c of the collet holder

Petition 870180055605, of 06/27/2018, p. 27/53

24/41

33. The rear end part 34b of the torsion bar 34 is shaped like a thick plate, and is formed so that it curves like the letter U, so that the rear end part 34b can interleave the upper end part 33c of the clamp holder 33 from the left and right. When the rear connection shaft 55 that penetrates the rear end part 34b and the upper end part 33c of the collet holder 33 and extends in the left - right direction is mounted with the upper end part 33c being located on the inner side of this rear end part 34b, the rear end part 34b of the torsion bar 34 is connected to the upper end part 33c of the collet support 33, in such a way that the torsion bar 34 is able to swing up and down low.

[0077] With reference to figure 10 together, the rear connection shaft 55 is a stepped pin. The rear connecting shaft 55 has a head portion 55a at its left end portion, and a screw shaft 55b at its right end portion. A portion of the rear connecting shaft 55 between the head portion 55a and the screw shaft 55b constitutes a shaft portion 55c shaped like a circular column. The rear end part 34b and the upper end part 33c are connected together when: this rear connecting shaft 55 penetrates, from left to right, into the rear end part 34b of the torsion bar 34 and the part of upper end 33c of the clip holder 33, which is positioned into the rear end part 34b; and a nut 55d is screwed and attached to the screw shaft 55b projecting to the right of the rear end part 34b. From this point on, a section through which the rear end part 34b of the torsion bar 34 and the upper end part 33c of the collet holder 33 are connected together will be referred to as

Petition 870180055605, of 06/27/2018, p. 28/53

25/41 a rear connection part 57.

[0078] A right end portion of the axle part 55c projects to the right of the rear end part 34b. Nut 55d is attached to shaft part 55c with a right end of this shaft part 55c being used as a supporting surface. An annular rear elastic member 57a penetrated by the right end portion of the shaft part 55c is adjusted between this nut 55d and the rear end part 34b. The rear elastic member 57a is made of an elastic body, such as rubber. The rear elastic member 57a guides the rear connecting shaft 55 to the right, and allows the rear connecting shaft 55 to be tilted towards the rear end part 34b.

[0079] Here, each of the clearances (interstices) S2, which allows the clamp holder 33 to swing in and out (in the lateral direction) in relation to the torsion bar 34 by only a predetermined amount, is provided between an inner side surface of the rear end part 34b and a corresponding outer side surface of the upper end part 33c.

[0080] The S2 clearances allow the clamp holder 33 to swing outwards (outwards in the left - right direction of the vehicle body structure, towards the right arm member 9b or towards the side opposite the driven flange 51 ), in relation to the torsion bar 34, only by the predetermined quantity (corresponding to an angle Θ2 in the drawing). In addition, a guiding force of the rear elastic member 57a restricts occurrences, such as the creaking of the rear connection shaft 55 due to the spaces S2, during normal operation. In other words, the rear connection part 57 allows the clamp holder 33 to swing outwards laterally with respect to the torsion bar 34 only by the predetermined amount. Note that a gap (one game) is also provided between each order 870180055605, dated 27/06/2018, pg. 29/53

26/41 rear end shaft insert shaft 34b and rear link shaft shaft part 55c, as well as between upper shaft end shaft insert hole 33c and shaft end part 55c rear connection plate 55. These clearances provide space for the clamp holder 33 to swing outwards laterally in relation to the torsion bar 34.

[0081] On the other hand, the front end part 34a of the torsion bar 34 is connected to a bar connection support 9e, which is provided in the rear portion of the cross member 9c, so as to project upwards. The bar connection support 9e is shaped like a thick plate substantially orthogonal to the left - right direction. The front end part shaped like a thick plate 34a of the torsion bar 34 is formed so that it curves like the letter U, so that the front end part 34a can insert this bar connection support 9e from the left and right. When the front connecting axle 54 which penetrates the front end part 34a and the bar connection bracket 9e and extends along the left - right direction is mounted with the bar connection bracket 9e being inserted into this part front end 34a, the front end part 34a of the torsion bar 34 is connected to the bar connection support 9e in such a way that the torsion bar 34 is able to swing up and down.

[0082] The front connection axle 54 is a stepped bolt as well. The front connecting shaft 54 has a head portion 54a at its left end portion, and a screw shaft 54b at its right end portion. A portion of the front connecting shaft 54 between the head portion 54a and the screw shaft 54b constitutes an axis portion 54c shaped like a circular column. The front end part 34a and the bar connection bracket

Petition 870180055605, of 06/27/2018, p. 30/53

27/41

9e are connected together when: this front connecting axle 54 penetrates, from left to right, into the front end part 34a of the torsion bar 34 and into the bar connection support 9e, which is positioned on the inside the front end part 34a; and a nut 54d is screwed and secured to the screw shaft 54b projecting to the right of the front end part 34a. From this point on, a section through which the front end part 34a of the torsion bar 34 and the bar connection support 9e are connected together will be referred to as a front connection part 56.

[0083] A right end portion of the axle part 54c projects to the right of the front end part 34a. The nut 54d is attached to the shaft part 54c with a right end of this shaft part 54c being used as a supporting surface. An annular front elastic member 56a penetrated by the right end portion of the axle part 54c is adjusted between this nut 54d and the front end part 34a. The front elastic member 56a is made of an elastic body, such as rubber. The front elastic member 56a guides the front connecting axle 54 to the right, and allows the front connecting axle 54 to be tilted towards the front end portion 34a.

[0084] Here, each of the clearances (sets) S1, which allows the torsion bar 34 to swing in and out (in the lateral direction) around the front end part 34a only by a predetermined amount is provided between an inner side surface of the front end portion 34a and a corresponding outer side surface of the bar connection bracket 9e.

[0085] Clearances S1 allow the torsion bar 34 to swing outwards laterally around the front end side of it by the predetermined amount (corresponding to an angle

Petition 870180055605, of 06/27/2018, p. 31/53

28/41

Θ1 in the drawing). In addition, a guiding force of the front elastic member 56a restricts occurrences, such as the crease of the front connecting shaft 54 due to the spaces S1, during normal operation. In other words, the front connection part 56 allows the torsion bar 34 to laterally swing outwardly around the front end only by the predetermined amount. [0086] Note that a gap (interstice) is also provided between each axle insertion hole of the front end part 34a and the axle part 54c of the front connecting axle 54, as well as between the axle insertion hole of the support connecting rod 9e and the axle part 54c of the front connecting axle 54. These clearances provide space for the torsion rod 34 to swing outwards. In this way, the rear end portion side 34b of the torsion bar 34 moves sideways outward to a relatively large extent, although an angle at which the front connecting part 56 allows the torsion bar 34 to sway outwards is small.

[0087] With reference to figures 2 and 4, the projection part 33b of the clamp support 33 is provided so that it projects from the lower end part of the main support body 33a to the right to a great extent. This projection portion 33b acts as a distance collar between the right collar 47 and the right arm member 9b. For this reason, a mere pull of the rear axle 10 does not allow the rear wheel 8 to be moved to the right, and the driven flange 51 and the main hub body 41e are disengaged from each other. As a result, the rear wheel 8 cannot be detached between the left and right arm members 9a, 9b.

[0088] On the other hand, when the protruding part 33b of the collet holder 33 is retracted between the right collar 47 and the right arm member 9b with the rear axle 10 being removed, the rear wheel 8 can

Petition 870180055605, of 06/27/2018, p. 32/53

29/41 be moved to the right only by a distance corresponding to the left - right width of the projection part 33b. This movement allows the driven flange 51 and the main hub body 41e to be detached from each other and, therefore, the rear wheel 8 is detached from the left and right arm members 9a, 9b.

[0089] Next, descriptions will be provided as to how this modality operates.

[0090] In the case of motorcycle 1 with the configuration described above, the rear wheel 8 is detached from the left and right arm members 9a, 9b, as follows. First of all, the axle nut 10d is removed from the right end portion of the rear axle

10. Subsequently, the rear axle 10 is pulled to the left without a load being applied to the rear wheel 8 by the use of a central easel or the like. At this time, the rear wheel 8 cannot yet be detached from the left and right arm members 9a, 9b because: the main hub body 41e engages with the driven flange 51 from the right, as described above; and the clamp holder 33 restricts the rear wheel 8 to move to the right.

[0091] Then, as shown in figure 5, the torsion bar 34, the caliper bracket 33 and the brake caliper 32 are oscillated upwards around the front connecting shaft 54. In this way, the brake caliper 32 it is moved upwards to be above the brake disc 31, and the brake caliper 32 and the brake disc 31 are detached from each other. At this time, due to the fact that the inner part 32b of the brake caliper 32 enters the interior of the rear wheel 8, even if an attempt is made to simply move the brake caliper 32 upwards, the brake caliper 32 can be moved to up to an extent where the brake caliper 32 interferes with tire 42 and similar to the rear wheel 8. In other words, with an amount of movement

Petition 870180055605, of 06/27/2018, p. 33/53

At this time, the caliper bracket 33, the brake caliper 32 and the like cannot be moved back to positions which allow the rear wheel 8 to be moved to the right.

[0092] For this reason, subsequently, as shown in figure 6, the rear end part side 34b of the torsion bar 34 is laterally oscillated around the front end part side 34a of the torsion bar 34. In this way, the inner part 32b of the brake caliper 32 is drawn from the inside to the outside of the rear wheel 8. Subsequently, with this condition being maintained, the torsion bar 34, the caliper support 33 and the brake caliper 22 are oscillated up again. At this point, if the inner part 32b of the brake caliper 32 can be drawn from the inside laterally to the outside of the rear wheel 8 (laterally outwards beyond the line L1), when the torsion bar 34 comes into contact with the side end rear shock absorber assembly 28, caliper bracket 33, brake caliper 32 and the like can be moved upward to positions which allow rear wheel 8 to be moved to the right without brake caliper 32 interfering with the rear wheel 8.

[0093] At this moment, due to the fact that the torsion bar 34 is swung upwards, the section through which the torsion bar 34 and the rear shock absorber 28 intersect when viewed from the side is displaced towards the part front end 34a of the torsion bar 34. This increases an angle at which the torsion bar 34 oscillates laterally outward, until it comes into contact with the inner side end of the rear damper assembly 28. This therefore increases the space for the brake caliper 32 moves sideways outward, and makes it easy to remove the inner part 32b of the brake caliper 32 from the inside of the rear wheel 8.

[0094] Furthermore, at this moment, the rear connection part 57

Petition 870180055605, of 06/27/2018, p. 34/53

31/41 allows the caliper bracket 33 to swing outwardly in relation to the torsion bar 34. This further increases the space for the brake caliper 32 to move outward, and makes it easy to remove the inner part 32b of the brake caliper. 32 inside the rear wheel 8 (see figure 7).

[0095] On the other hand, in a case where the inner part 32b of the brake caliper 32 is still located inside the rear wheel 8 (laterally inward beyond the line L1), even at this moment, the brake caliper 32 needs be additionally moved to the right in relation to the rear wheel 8. However, due to the fact that the torsion bar 34 intercepts the rear damper assembly 28 located laterally out of the torsion bar 34, when viewed from the side, the torsion bar torsion 34 and the like can be swung outwards only to the extent that this torsion bar 34 contacts the inner side end of the rear shock absorber assembly 28. For this reason, the brake caliper 32 and the collet supports 33 are swung outwards laterally around the rear end part 34b (see figure 11).

[0096] Note that oscillation laterally out of the rear end part side 34b of the torsion bar 34 can be achieved by: a detachment of the brake caliper 32 towards above the brake disk 31; and an upward movement of the clip holder 33 to an extent where an overlap of the clip holder 33 with the right arm member 9b is eliminated, when viewed from the side (see figure 5). The rear connection part 57 allows the clamp holder 33 to swing outwards laterally in relation to the torsion bar 34, as described above. This further increases the space for the brake caliper 32 to move laterally outward and thus allows the inner part 32b of brake caliper 32 to be pulled from the inside laterally to the outside of the rear wheel 8 (laterally outward beyond line L1) (see figure 7). In this way, the pin holder

Petition 870180055605, of 06/27/2018, p. 35/53

32/41 ça 33, the brake caliper 32 and the like become capable of being moved upwards to the positions which allow the rear wheel 8 to move to the right (as indicated by the broken line in figure 8), without the brake caliper 32 interfere with the rear wheel 8.

[0097] In addition, the brake tube 35 is arranged along the upper surface of the torsion bar 34, when viewed from the side, and the brake tube 35 is maintained towards the upper surface side of the torsion bar 34. For this reason, the brake tube 35 is never caught between the torsion bar 34 and the rear shock absorber assembly 28, when the torsion bar 34 is oscillated laterally outward, and the angle at which the torsion bar 34 is wobbled laterally is never reduced. Note that the brake tube 35 can be configured so that: the brake tube 35 is arranged along the underside of the torsion bar 34, when viewed from the side; and the brake tube 35 is maintained on the lower surface side of the torsion bar 34.

[0098] As shown by the dashed line in figure 8, once the caliper holder 33, brake caliper 32 and the like are moved upwards to positions which allow the rear wheel 8 to move to the right (for positions in which an overlap of the caliper bracket 33, the brake caliper 32 and the like with the rear wheel 8 is eliminated, when viewed from the side), the rear wheel 8 is able to be moved to the right only to an extent corresponding to the release of the driven flange 51 and the main hub body 41e from its fit with each other, as shown in figure 9. In this way, the rear wheel 8 can be detached from the left and right arm members 9a, 9b. Note that the affixing of the rear wheel 8 to the left and right arm members 9a, 9b can be achieved by carrying out the work in reverse order to the previous order.

[0099] Even more so, in a case where the inner part 32b of the pin

Petition 870180055605, of 06/27/2018, p. 36/53

33/41 brake lever 32 cannot be removed from the interior of the rear wheel 8 just by the movement of the brake caliper 32, the service can be obtained by: an additional inclination of the rear wheel 8 itself, as shown in figure 11; and thus an indentation of the rear wheel 8 to be more internal than the inner side end (the innermost position, as shown by line L2 in the drawing) of the brake caliper 32 on one side where the brake caliper 32 is moved. This inclination can be achieved by fitting the hub portion 41b and the driven flange 51 with each other, with the buffers 53 between them, each of which is made of an elastic body.

[00100] In this way, the caliper support 33, the brake caliper 32 and the like become capable of being unfailingly moved upwards to the positions which allow the rear wheel 8 to move to the right. This makes it possible to detach the rear wheel 8 from the left and right arm members 9a, 9b.

[00101] Note that the tilt of the rear wheel 8 is effective also in a case where even an upward movement of the caliper bracket 33, the brake caliper 32 and the like cannot cause the caliper bracket 33, the caliper brake pads 32 and the like are retracted to positions where an overlap of the caliper bracket 33, the brake caliper 32 and the like with the rear wheel 8 is eliminated, when viewed from the side.

[00102] As described above, the structure for displaying and detaching a rear wheel according to this modality is applied to motorcycle 1, which includes: the swing arm 9 configured to pivotally support the rear wheel 8 between the members of left and right arm 9a, 9b; the driven flange 51 supported by the left arm member 9a of the swing arm 9 and configured to revolve in response to the activation of the motor 14; and the disc brake configured between the right arm member 9b of the osci arm

Petition 870180055605, of 06/27/2018, p. 37/53

34/41 lante 9 and the rear wheel 8. The disc brake includes: the brake disc 31 attached to the rear wheel 8; the brake caliper 32 configured to insert and press the brake disc 31; the caliper support 33 configured to support the brake caliper 32 on the rear axle 10; and the torsion bar 34 including the rear end part 34b connected to the clamp holder 33, and the front end part 34a connected to the swing arm 9. The rear wheel 8 is removably adapted to the driven flange 51 from the side of right arm member 9b. In the structure, the front end part 34a of the torsion bar 34 is connected to the swing arm 9 with the front connecting shaft 54, which extends in the left - right direction, in such a way that the torsion bar 34 is capable of to swing up and down. The torsion bar 34, the caliper support 33 and the brake caliper 32 are capable of being swung up and down to the positions which allow the rear wheel 8 to move towards the right arm member 9b.

[00103] The structure for attaching and detaching a rear wheel still includes the rear shock absorber assembly 28, which extends between the right arm member 9b and the vehicle body structure frame 5. The rear shock absorber assembly 28 is positioned laterally out of the torsion bar 34, in a way that intercepts the torsion bar 34, when viewed from the side.

[00104] This configuration makes it possible to swing the torsion bar 34, the caliper bracket 33 and the brake caliper 32 around the front connecting shaft 54 that connects the front end part 34a of the bar. twist 34 to the swing arm 9 and extending in the left - right direction; thus, detach the brake caliper 32 from the brake disc 31; and, after that, swing the torsion bar 34, the caliper bracket 33 and the brake caliper 32 up and down to the positions which allow the rear wheel 8 to move

Petition 870180055605, of 06/27/2018, p. 38/53

35/41 move towards the right arm member 9b with the rear end part side 34b of the torsion bar 34 being laterally oscillated around the front end part side 34a of the torsion bar.

[00105] This makes it possible to move the rear wheel 8 towards a side opposite the driven flange 51, in order to free the rear wheel 8 and driven flange 51 from being adapted to each other. In other words, the torsion bar 34, the caliper bracket 33 and the brake caliper 32 no longer need to be oscillated towards the outside of the swing arm to a large extent because they are oscillated up and down mainly around the front connecting axle 54. Also, in a case where the rear shock absorber assembly 28 is positioned laterally out of the torsion bar 34, the work of fixing and detaching the rear wheel 8 can be facilitated by saving the fixing problems and detachment of the rear shock absorber set 28, display and detachment of the disc brake itself, and the like.

[00106] Furthermore, in the structure above for attaching and detaching a rear wheel, the front connection part 56 configured for joint connection of the front end part 34a of the torsion bar 34 and the swing arm 9 allows the twist 34 swing outwards. In addition, the front connection part 56 includes the front elastic member 56a, which orientates the front connection axis 54 in an axial direction thereof. For this reason, even in the case where the front connection part 56 is configured to allow the torsion bar 34 and the like to oscillate in the lateral direction by using the games which the front connection part 56 has in the axial direction of the front connection axle 54 and in a direction orthogonal to this axial direction, the structure for displaying and detaching a rear wheel can prevent the cone part

Petition 870180055605, of 06/27/2018, p. 39/53

36/41 front drive 56 creaks due to games during normal operation. Therefore, it is made easy to ensure space for the torsion bar 34 and the like to oscillate in the lateral direction. Furthermore, it is made easy to swing the torsion bar 34, the caliper bracket 33, the brake caliper 32 up and down, even in the case where the brake caliper 32 is configured so that its part enters the interior rear wheel 8 for the purpose of reducing the left - right width of the rear wheel 8 and its proximity.

[00107] Furthermore, in the structure above for attaching and detaching a rear wheel, the brake tube 35 extending from the master cylinder to the brake caliper 32 is arranged along the top or bottom surface of the bar. torsion 34. Furthermore, while it is positioned in this condition, the brake tube 35 is held by the torsion bar 34. For this reason, the brake tube 35 is never stuck between the rear shock absorber assembly 28 and the torsion bar 35, even in the case where the rear shock absorber 28 is positioned laterally out of the torsion bar 34. Thus, the torsion bar 34 can be swung in the lateral direction to a large extent, until it comes in contact with the rear shock absorber 28. Therefore, it is made easy to secure the space for the torsion bar 34 and similar to swing in the lateral direction. Even in the case where the brake caliper 32 is configured so that its part enters the interior of the rear wheel 8 for the purpose of reducing the left - right width of the rear wheel 8 and its proximity, it is easy to swing the torsion bar 34 , the caliper support 33 and the brake caliper 32 up and down. Furthermore, due to the fact that the brake tube 35 is held by the torsion bar 34, the brake tube 35 can be moved in response to the oscillation of the torsion bar 34. This makes it easy to swing the torsion bar 34, the support caliper 33 and brake caliper 32 up and down.

Petition 870180055605, of 06/27/2018, p. 40/53

37/41 [00108] In addition, in the structure above for attaching and detaching a rear wheel, the clamp holder 33 is connected to the rear end part 34b of the torsion bar 34 with the rear connection shaft 55 between them, the which extends in the left right direction, in such a way that it is able to swing up and down. The rear connection part 57 configured for connection together of the rear end part 34b of the torsion bar 34 and the clamp support 33 allows the clamp support 33 to swing outwards. The rear connection part 57 includes the rear elastic member 57a configured to orient the rear connection axis 55 in the axial direction thereof. For this reason, the caliper holder 33 and the brake caliper 32 can be swung outwards laterally on the rear end part side 34b of the torsion bar 34. Thus, it is made easy to swing the torsion bar 34, the torsion support 34 caliper 33 and brake caliper 32 up and down, even in the case where the caliper 32 is configured so that its part enters the interior of the rear wheel 8 for the purpose of reducing the left-right width of the rear wheel 8 and its proximity.

[00109] Furthermore, in the structure above for attaching and detaching a rear wheel, the driven flange 51 and the rear wheel 8 are adapted to each other with the damping members 53 between them. This can facilitate the work, such as swinging the torsion bar 34, the caliper bracket 33 and the brake caliper 32 up and down with the rear wheel 8 being tilted. Therefore, it is made easy to swing the torsion bar 34 and the like more up and down, and, thus, it can facilitate the work of affixing and detaching the rear wheel 8.

[00110] Specifically, the structure above for attaching and detaching a rear wheel can facilitate the work of attaching and detaching the rear wheel 8 by oscillating the torsion bar 34,

Petition 870180055605, of 06/27/2018, p. 41/53

38/41 of the caliper bracket 33 and the brake caliper 32 up and down to the positions which allow the rear wheel 8 to move towards the right arm member 9b with the rear wheel 8 being further tilted after the brake caliper 32 be detached from the brake disc 31.

[00111] Furthermore, in the structure above for attaching and detaching a rear wheel, due to the fact that the rear shock absorber assembly 28 is positioned in front of the rear end part 34b of the torsion bar 34, the clamp support 33 and the brake caliper 32, it is made easy to secure space at the rear of the rear shock absorber assembly 28 so that the caliper support 33 and the brake caliper 32 oscillate. Therefore, the work of affixing and detaching the rear wheel 8 can be facilitated.

Mode 2 [00112] Next, with reference to figures 12 and 13, descriptions will be provided for a second embodiment of the present invention. [00113] This mode is different from the first mode in having, on the side of the rear wheel 8 including the brake disc 31, an opening 61, which is for the brake caliper 32 to enter having left the brake disc 31. The parts which are the same as those of the preceding modality will be detonated by the same reference numbers, and descriptions of those parts will be omitted.

[00114] With reference to figure 12, the opening 61 is formed surrounded by an inner peripheral edge of the rim part 41a, lateral edges of radius parts 41c and an outer peripheral edge of the brake disc 31, when viewed from the side . Opening 61 is adjusted large enough at least so that the inner part 32b of the brake caliper 32 enters the opening 61 (preferably, large enough for the brake caliper 32 and the caliper support 33 to enter the opening 61).

Petition 870180055605, of 06/27/2018, p. 42/53

39/41 [00115] Even in the case where the brake caliper 32 and the caliper support 33 cannot be moved so much that they reach the positions in which an overlap of the brake caliper 32 and the caliper support 33 with the wheel rear 8 is eliminated when viewed from the side, this opening 61 allows the inner part 32b of the brake caliper 32, which hovers at least laterally inward, to enter the interior of the opening 61. In this way, it is possible to detach the driven flange 51 and hub portion 41 b of each other by moving the rear wheel 8 to the right. Therefore, the rear wheel 8 can be detached from the arm members 9a, 9b (see figure 13).

[00116] Note that this modality can be applied not only to a case where the brake caliper 32 is positioned above the swing arm 9, but also to a case where the brake caliper 32 is positioned under the swing arm 9 (as indicated by the dashed line in each of the figures 12 and 13). In the latter case, due to the fact that the rear shock absorber assembly 28 is not positioned on the outer side of the torsion bar 34, it is possible to swing the torsion bar 34 outwards to a relatively large extent. Therefore, the caliper holder 33, the brake caliper 32 and the like can easily be retracted to positions which allow the rear wheel 8 to move to the right.

[00117] In the structure for affixing and detaching a rear wheel according to the mode described above, as described above, the opening 61 into which the brake caliper 32 is to enter, having oscillated up and down around the axis of front connection 54 is formed on the rear wheel side 8 including the brake disc 31. For this reason, as well as being able to exert advantageous effects, as described in the first modality, the structure according to this modality is able to release the rear wheel 8 and driven flange 51 as to be adapted to each other by: a

Petition 870180055605, of 06/27/2018, p. 43/53

40/41 oscillation of the torsion bar 34, the caliper support 33 and the brake caliper 32 up and down, mainly around the front connecting shaft 54; thus releasing the brake caliper 32 from its socket with the brake disc 31; after that, a movement of the rear wheel 8 to a side opposite the driven flange 51 in such a way that the brake caliper 32 enters the opening 61 formed on the side of the rear wheel 8. Therefore, the work of posting and detaching rear wheel 8 can be facilitated.

[00118] Furthermore, the structure makes it possible to move the rear wheel 8, in order to free the rear wheel 8 from being adapted to the driven flange 51, even when the brake caliper 32 cannot be moved to the position in which a overlapping of the brake caliper 32 with the rear wheel 8 is eliminated when viewed from the side. That is, after releasing the brake caliper 32 from its engagement with the brake disc 31, the rear wheel 8 is moved away from the driven flange 51, in such a way that the brake caliper 32 enters the interior of the opening 61 formed on the rear wheel side 8 including the brake disc 31.

[00119] Note that this invention is not limited to the modalities described above. Needless to say, the invention can be modified in several ways, without deviating from the essence of the invention. This modification appropriately includes the combination of structures and methods according to the first modality and the second modality for displaying and detaching the rear wheel 8.

Petition 870180055605, of 06/27/2018, p. 44/53

41/41

Reference Listing

MOTORCYCLE

VEHICLE BODY STRUCTURE

REAR WHEEL

SWING ARM

9a, 9b ARM MEMBERS

REAR AXLE (REAR WHEEL AXLE)

MOTOR

REAR SHOCK ASSEMBLY

BRAKE DISC

BRAKE CALIPER

CLAMP SUPPORT

TORSION BAR

34TH FRONT END

34b REAR END END

BRAKE TUBE

ACTIVATED FLANGE (ACTIVATION MEMBER)

SHOCKING MEMBER (ELASTIC POWER TRANSMISSION MEMBER)

FRONT CONNECTION AXLE

REAR CONNECTION AXLE

FRONT CONNECTION PART

56a FRONT ELASTIC MEMBER

REAR CONNECTION PART

57a REAR ELASTIC MEMBER

OPENING

Claims (10)

1. Structure for displaying and detaching a rear wheel (8) from a motorcycle (1), which includes: a swing arm (9) that pivotably supports the rear wheel between the left and right arm members (9a, 9b); a drive member (51) supported by one of the swing arm members, and configured to revolve in response to a motor drive (14); and a disc brake configured between the other of the swing arm members and the rear wheel, the disc brake including: a brake disc (31) attached to the rear wheel; a brake caliper (32) configured to insert and press the brake disc; a caliper support (33) that supports the brake caliper on a rear wheel axle; and a torsion bar (34) including a rear end part (34b) connected to the clamp support, and including a front end part (34a) connected to the swing arm, the rear wheel being removably adapted to the drive member from one side of the other arm member, characterized by the fact that the front end part of the torsion bar is connected to the swing arm with a front connecting shaft (54) between them, in such a way that the torsion is able to oscillate up and down, the front connecting shaft extending in a left - right direction, and the torsion bar (34), the caliper support (33) and the brake caliper (32) are able to swing up and down to positions which allow the rear wheel to Petition 870180055605, of 06/27/2018, p. 46/53 2/5 towards the other arm member (9a, 9b). 2. Structure for affixing and detaching a rear wheel (8) of a motorcycle (1), according to claim 1, characterized by the fact that it comprises a rear shock absorber assembly (28) that extends between and connects the other member arm and a vehicle body frame (5), the rear shock absorber assembly is positioned laterally out of the torsion bar (34), so as to intercept the torsion bar, when viewed from the side. 3. Structure for affixing and detaching a rear wheel (8) of a motorcycle (1), according to claim 2, characterized by the fact that the rear shock absorber assembly (28) is positioned in front of the rear end part ( 34b) of the torsion bar (34), the caliper support (33) and the brake caliper (32). 4. Structure for displaying and detaching a rear wheel (8) from a motorcycle (1), according to any one of claims 1 to 3, characterized by the fact that: a front connection part (56) allows the torsion bar (34) to swing outwards, the front connection part being configured to connect together the front end part (34a) of the torsion bar and the swing arm ( 9); and the front connection part includes a front elastic member (56a) configured to orient the front connection axis (54) in an axial direction thereof. 5. Structure for displaying and detaching a rear wheel (8) from a motorcycle (1), according to any one of claims 1 to 4, characterized by the fact that: a brake tube (35) is arranged along any one of a top surface or a lower surface of the torsion bar (34), the brake tube extending from a middle cylinder 870180055605, from 06/27 / 2018, p. 47/53 3/5 tre to the brake caliper (32); and while being placed in this condition, the brake tube is maintained by the torsion bar. 6. Structure for displaying and detaching a rear wheel (8) from a motorcycle (1), according to any one of claims 1 to 5, characterized by the fact that: the collet support (33) is connected to the rear end part (34b) of the torsion bar (34) with a rear connection shaft (55) between them, in order to be able to swing up and down, the rear connecting shaft extending in the left-right direction; a rear connection part (57) allows the collet support to swing outwards, the rear connection part being configured to connect the rear end part of the torsion bar and the collet support together; and the rear connection part includes a rear elastic member (57a) configured to orient the rear connection axis in the axial direction. 7. Structure for displaying and detaching a rear wheel (8) from a motorcycle (1), according to any one of claims 1 to 6, characterized by the fact that the driving member (51) and the rear wheel are adapted each other with an elastic power transmission member (53) between them. 8. Structure for affixing and detaching a rear wheel (8) of a motorcycle (1), according to any one of claims 1 to 7, characterized by the fact that an opening (61) in which the brake caliper (32 ) will enter having oscillated up and down around the front connecting axle (54) is formed on the rear wheel side including the brake disc (31). 9. Method of posting and detaching a rear wheelPetition 870180055605, dated 06/27/2018, p. 48/53 4/5 ra (8) of a motorcycle (1), the motorcycle characterized by the fact that it includes: a swing arm (9) that pivotably supports the rear wheel between the left (9a) and right (9b) arm members; a drive member (51) supported by one of the swing arm members, and configured to revolve in response to a motor drive (14); and a disc brake configured between the other of the swing arm members and the rear wheel, the disc brake including: a brake disc (31) attached to the rear wheel; a brake caliper (32) configured to insert and press the brake disc; a caliper support (33) that supports the brake caliper on a rear wheel axle; and a torsion bar (34) including a rear end part (34b) connected to the clamp support, and including a front end part (34a) connected to the swing arm, the rear wheel being removably adapted to the drive member from one side of the other arm member, the method comprising the steps of: oscillation of the torsion bar, caliper bracket and brake caliper up and down around a front connecting shaft (54), which together connects the front end part of the torsion bar and the swing arm , and extends in a left - right direction; release the brake caliper from its fitting with the brake disc; thereafter, oscillation of the rear end part side of the torsion bar laterally outward around the part side Petition 870180055605, of 06/27/2018, p. 49/53 5/5 front end of the torsion bar; and while the torsion bar is placed in the oscillated condition, the oscillation of the torsion bar, the caliper support and the brake caliper up and down, to positions which allow the rear wheel to move towards the other member arm. 10. Method of affixing and detaching a rear wheel (8) of a motorcycle (1), according to claim 9, characterized by the fact that it still comprises the steps of: tilt of the rear wheel after the step of releasing the brake caliper (32) from its fit with the brake disc (31); and, after that, while the rear wheel is placed in an inclined condition, the oscillation of the torsion bar (34), the caliper support (33) and the brake caliper up and down to the positions which allow the rear wheel moves towards the other arm member.