WO2023176476A1 - Pad for straddled part of saddled vehicle and saddled vehicle - Google Patents

Pad for straddled part of saddled vehicle and saddled vehicle Download PDF

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Publication number
WO2023176476A1
WO2023176476A1 PCT/JP2023/007817 JP2023007817W WO2023176476A1 WO 2023176476 A1 WO2023176476 A1 WO 2023176476A1 JP 2023007817 W JP2023007817 W JP 2023007817W WO 2023176476 A1 WO2023176476 A1 WO 2023176476A1
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WO
WIPO (PCT)
Prior art keywords
pad
straddle
knee
section
ratio
Prior art date
Application number
PCT/JP2023/007817
Other languages
French (fr)
Japanese (ja)
Inventor
裕也 奥田
鼓太朗 谷道
Original Assignee
ヤマハ発動機株式会社
ＮａｔｕｒｅＡｒｃｈｉｔｅｃｔｓ株式会社
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Filing date
Publication date
Application filed by ヤマハ発動機株式会社, ＮａｔｕｒｅＡｒｃｈｉｔｅｃｔｓ株式会社 filed Critical ヤマハ発動機株式会社
Publication of WO2023176476A1 publication Critical patent/WO2023176476A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J25/00—Foot-rests; Knee grips; Passenger hand-grips
    • B62J25/02—Knee grips, e.g. on fuel tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J35/00—Fuel tanks specially adapted for motorcycles or engine-assisted cycles; Arrangements thereof

Definitions

  • the present invention relates to a straddle pad for a straddle-type vehicle and a straddle-type vehicle.
  • a pad member called a tank pad is sometimes attached to the rear of the tank (the part that comes into contact with the rider's clothing, etc.).
  • a tank pad is disclosed in Patent Document 1, for example.
  • a pad member called a knee pad is sometimes attached to the side of the tank to prevent the rider's knees from slipping during knee grip.
  • a kneepad is disclosed in Patent Document 2, for example.
  • An object of the embodiments of the present invention is to provide a straddle-type vehicle straddle pad that improves comfort.
  • This specification discloses a straddle-type vehicle straddle pad and a straddle-type vehicle described in the following items.
  • a straddle-type vehicle straddle pad that is attached to the straddle-type vehicle so that at least a portion of the pad is in contact with a rider, A straddle pad including a first portion having a negative Poisson's ratio.
  • the straddle pad according to an embodiment of the present invention includes a portion (first portion) having a negative Poisson's ratio (i.e., having an auxetic structure), so that the portion deforms to wrap around the load point when a load is applied. do. Therefore, the fit to the rider's body is improved, and comfort is improved.
  • a straddle pad according to an embodiment of the present invention may include a second portion having a Poisson's ratio that is different from the Poisson's ratio of the first portion. That is, the straddle pad according to the embodiment of the present invention may have a distribution in Poisson's ratio. Since the straddle pad has a distribution in Poisson's ratio, it is possible to set the fit according to the part of the rider's body that is in contact with the straddle pad, further improving comfort.
  • a pair of knee pads arranged in contact with the rider's knees and/or inner thighs; a middle pad section located between the pair of knee pad sections; has The straddle pad according to item 1 or 2, wherein each of the pair of knee pad portions includes the first portion.
  • the first portion having a negative Poisson's ratio in the kneepad section, it is possible to improve the fit in the kneepad section. Therefore, even if the knee grip is weak, the body can be firmly held, making the knee grip easier and improving comfort.
  • the straddle pad according to the embodiment of the present invention may include a third portion and a fourth portion having different hardnesses. That is, the straddle pad according to the embodiment of the present invention may have a hardness distribution. Since the straddle pad has a hardness distribution, the hardness can be set according to the body part that comes into contact with the straddle pad, further improving comfort.
  • a pair of knee pads arranged in contact with the rider's knees and/or inner thighs; a middle pad section located between the pair of knee pad sections; has The third portion is harder than the fourth portion,
  • Each of the pair of kneepad portions includes the third portion,
  • the relatively hard third part is included in the knee pad part, and the relatively soft fourth part is included in the middle pad part, thereby making the knee pad part, which is the part where you want to firmly support the body during knee grip, hard. , it is possible to soften the middle pad part, which is the area where you want to disperse body pressure and reduce the feeling of pressure.
  • the maximum thickness of the middle pad portion may be greater than the minimum thickness of each knee pad portion and greater than or equal to the maximum thickness of each knee pad portion. That is, the straddle pad may have a thickness distribution. Since the straddle pad has a thickness distribution, it is possible to appropriately distribute body pressure according to the part of the rider's body that is in contact with the straddle pad, thereby improving comfort.
  • the maximum thickness of the middle pad section By making the maximum thickness of the middle pad section larger than the minimum thickness of each knee pad section and greater than or equal to the maximum thickness of each knee pad section, the fit and vibration reduction properties of the middle pad section are improved, while the maximum thickness of the knee pad section is increased. It is possible to suitably hold the lower body (knee grip).
  • the maximum thickness of the middle pad section is preferably larger than the maximum thickness of each knee pad section.
  • the straddle pad may have a lattice structure including a plurality of unit structures in a three-dimensional lattice shape.
  • the Poisson's ratio of the straddle pad can be adjusted to realize a negative Poisson's ratio.
  • the Poisson's ratio can be made to differ from each other, or the hardness can be made to differ from each other (in other words, the straddle pad can have a Poisson's ratio (can have a hardness distribution or a hardness distribution).
  • breathability is improved and stuffiness can be suppressed.
  • Straddle pads according to embodiments of the invention may be formed from resin or rubber materials using additive manufacturing techniques, for example.
  • additive manufacturing technology By using additive manufacturing technology, a straddle pad having a lattice structure can be suitably formed, and a straddle pad having a negative Poisson's ratio can be easily obtained.
  • a straddle-type vehicle comprising the straddle pad according to any one of items 1 to 9.
  • the straddle pad according to the embodiment of the present invention is suitably used in various saddle type vehicles.
  • FIG. 1 is a left side view schematically showing a motorcycle 1 according to an embodiment of the present invention.
  • FIG. 2 is a plan view schematically showing a straddle pad 100 included in the motorcycle 1.
  • FIG. 2B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 2B-2B' in FIG. 2A.
  • FIG. 3 is a diagram showing changes when a compressive load is applied to a member P having a positive Poisson's ratio.
  • FIG. 6 is a diagram showing changes when a compressive load is applied to a member PN having a negative Poisson's ratio.
  • FIG. 2 is a cross-sectional view schematically showing a straddle pad 100.
  • FIG. 2 is a plan view schematically showing a straddle pad 100.
  • FIG. 4B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 4C-4C' in FIG. 4B.
  • FIG. 2 is an enlarged plan view of a part of the straddle pad 100 having a lattice structure, as seen from the Z direction.
  • FIG. 2 is an enlarged cross-sectional view of a part of the straddle pad 100 having a lattice structure, showing a cross section parallel to the YZ plane.
  • FIG. 4B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 4C-4C' in FIG. 4B.
  • FIG. 2 is an enlarged plan view of a part of the straddle pad 100 having a lattice structure, as seen from the Z direction.
  • FIG. 2 is an enlarged cross-sectional view of a part of the straddle pad
  • FIG. 5B is a diagram showing the strain that occurs in the X direction and the Y direction when a compressive load is applied in parallel to the Z direction to the first portion P1 having the lattice structure illustrated in FIG. 5B. It is a top view which expands and shows a part of 2nd part P2 which has a positive Poisson, and is a figure seen from the Z direction.
  • FIG. 2 is an enlarged cross-sectional view of a part of the second portion P2 having a positive Poisson, showing a cross section parallel to the YZ plane.
  • FIG. 2 is a cross-sectional view schematically showing a straddle pad 100.
  • FIG. It is a graph showing a load displacement curve of a sample in which an improvement in riding feeling was felt in actual running evaluation.
  • FIG. 2 is a plan view schematically showing a straddle pad 100.
  • FIG. 10B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 10B-10B' in FIG. 10A.
  • FIG. 2 is a plan view schematically showing a straddle pad 100.
  • FIG. 11B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 11B-11B' in FIG. 11A.
  • FIG. 2 is a plan view schematically showing a straddle pad 100.
  • FIG. 12B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 12B-12B' in FIG. 12A.
  • FIG. 2 is a cross-sectional view schematically showing a straddle pad 100.
  • FIG. 2 is a cross-sectional view schematically showing a straddle pad 100.
  • FIG. 10A is a cross-sectional view schematically showing the straddle pad 100, and corresponds to a cross section taken along line 13C-13C' in FIG. 10A.
  • a motorcycle will be exemplified as a straddle-type vehicle according to an embodiment of the present invention, but a straddle-type vehicle according to an embodiment of the present invention is not limited to a motorcycle.
  • FIG. 1 is a left side view schematically showing a motorcycle 1.
  • FIG. 1 is an on-road type motorcycle 1.
  • the motorcycle according to the embodiment of the present invention is not limited to the on-road type motorcycle 1, but may be other types of motorcycles such as a moped type or an off-road type.
  • front, rear, left, and right mean the front, rear, left, and right, respectively, as seen from the rider seated on the motorcycle 1. Further, the terms “up” and “down” respectively refer to the top and bottom when the motorcycle 1 is stopped on a horizontal surface.
  • the motorcycle 1 includes a body frame 10, a front wheel 2, a rear wheel 3, and an internal combustion engine 4.
  • the motorcycle 1 also includes a fuel tank 5 supported by a body frame 10 and a seat 6 on which a rider sits.
  • the seat 6 is arranged behind the fuel tank 5.
  • the vehicle body frame 10 includes a head pipe 11, left and right side frames 12 extending rearward and outward in the vehicle width direction from the head pipe 11, and left and right down frames 13 extending downward from the rear ends of the left and right side frames 12. Contains.
  • a steering shaft (not shown) to which a handle 14 is fixed is supported by the head pipe 11 so as to be rotatable left and right. The steering shaft is fixed to the front fork 7.
  • the front wheel 2 is supported by a front fork 7.
  • the rear wheel 3 is supported by the rear end of the rear arm 8.
  • a front end portion of the rear arm 8 is supported by a down frame 13 via a pivot shaft 9 so as to be able to swing up and down.
  • the front wheel 2 is a driven wheel.
  • the rear wheels 3 are drive wheels driven by the engine 4.
  • the engine 4 and the rear wheel 3 are connected by a chain 15.
  • the chain 15 is an example of a power transmission member that transmits the power of the engine 4 to the rear wheels 3.
  • the power transmission member is not limited to the chain 15, but may be a transmission belt, a drive shaft, or the like.
  • straddle section a portion that can come into contact with the lower body of a rider straddling the motorcycle 1 is referred to as a "straddle section.”
  • the straddle portion at least partially includes the seat 6, the fuel tank 5, and the like.
  • at least a portion of the left and right tank side covers 16 that cover the sides of the fuel tank 5 are also included in the straddle portion.
  • a pad member that is attached to the straddle portion so that at least a portion thereof contacts the rider is referred to as a “straddle portion pad”.
  • the motorcycle 1 includes a straddle pad 100 attached to the straddle.
  • the configuration of the straddle pad 100 will be described below with reference to FIGS. 2A and 2B.
  • FIG. 2A is a plan view schematically showing the straddle pad 100.
  • FIG. 2B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 2B-2B' in FIG. 2A.
  • the straddle pad 100 has a pair of knee pad sections 110 and a middle pad section 120, as shown in FIGS. 2A and 2B.
  • the straddle pad 100 is made of, for example, a resin material or a rubber material.
  • the pair of knee pad parts 110 are arranged at positions in contact with the rider's knees and/or inner thighs.
  • One of the pair of kneepad sections 110 (left kneepad section) 110L is located on the left side of the motorcycle 1, and is attached to the rear left side of the fuel tank 5 and the left tank side cover 16.
  • the other (right kneepad section) 110R of the pair of kneepad sections 110 is located on the right side of the motorcycle 1, and is attached to the rear right side of the fuel tank 5 and the right tank side cover 16.
  • the middle pad section 120 is located between the pair of knee pad sections 110.
  • the middle pad portion 120 is attached to the rear center of the fuel tank 5.
  • the middle pad section 120 is continuous with the left kneepad section 110L and also continuous with the right kneepad section 110R. That is, the middle pad section 120 and the pair of knee pad sections 110 are integrally formed.
  • the straddle pad 100 includes a portion (hereinafter referred to as a "first portion") P1 that has a negative Poisson's ratio (that is, has an auxetic structure).
  • first portion P1 that has a negative Poisson's ratio
  • the entire straddle pad 100 that is, the entire middle pad section 120 and each knee pad section 110
  • the entire straddle pad 100 is the first portion P1.
  • Poisson's ratio is the ratio of the strain that occurs in the direction perpendicular to the load direction and the strain that occurs along the load direction when a load is applied to an object within its elastic limit.
  • FIG. 3A is a diagram showing changes when a compressive load is applied to a member P P having a positive Poisson's ratio
  • FIG. 3B is a diagram showing changes when a compressive load is applied to a member P N having a negative Poisson's ratio.
  • FIG. 3A when a compressive load is applied to a member P P having a positive Poisson's ratio, a tensile strain occurs in a direction perpendicular to the direction of the load.
  • FIG. 3B when a compressive load is applied to a member PN having a negative Poisson's ratio, compressive strain occurs in a direction perpendicular to the direction of the load. Therefore, the portion PN having a negative Poisson's ratio deforms so as to wrap around the load point.
  • the straddle pad 100 provided in the motorcycle 1 according to the embodiment of the present invention includes the portion (first portion) P1 having a negative Poisson's ratio. 100) deforms when a load is applied so as to wrap around the load point. Therefore, the fit to the rider's body is improved, and comfort is improved.
  • a negative Poisson's ratio can be realized by the straddle pad 100 having, for example, a lattice structure as described below.
  • FIG. 4A shows another configuration of the straddle pad 100.
  • FIG. 4A is a cross-sectional view schematically showing the straddle pad 100.
  • the straddle pad 100 includes a second portion P2 having a Poisson's ratio different from the Poisson's ratio of the first portion P1.
  • each of the pair of knee pad portions 110 includes a first portion P1
  • the middle pad portion 120 includes a second portion P2.
  • the straddle pad 100 may include the second portion P2 having a Poisson's ratio different from the Poisson's ratio of the first portion P1.
  • the straddle pad 100 may have a distribution in Poisson's ratio. Since the straddle pad 100 has a distribution in Poisson's ratio, it is possible to set a fit according to the body part of the rider that is in contact with the straddle pad 100, further improving comfort.
  • the fit of the kneepad portion 110 can be improved. Therefore, even if the knee grip is weak, the body can be firmly held, making the knee grip easier and improving comfort.
  • the Poisson's ratio of the second portion P2 may be negative or positive. Further, the Poisson's ratio does not need to be constant (that is, it may have a distribution) in the second portion P2.
  • each kneepad portion 110 is entirely the first portion P1, but each kneepad portion 110 may include a mixture of the first portion P1 and a portion having a positive Poisson's ratio.
  • FIGS. 4B and 4C Other configurations of the straddle pad 100 are shown in FIGS. 4B and 4C.
  • FIG. 4B is a plan view schematically showing the straddle pad 100.
  • FIG. 4C is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 4C-4C' in FIG. 4B.
  • the middle pad section 120 is not continuous with the left kneepad section 110L, nor is it continuous with the right kneepad section 110R. That is, the left kneepad section 110L is separated from the middle pad section 120, and the right kneepad section 110R is also separated from the middle pad section 120. In other words, the middle pad section 120 and the pair of knee pad sections 110 are not integrally formed.
  • FIGS. 4B and 4C also have the effect of improving comfort because they include the first portion P1 having a negative Poisson's ratio.
  • FIGS. 4B and 4C show an example in which the middle pad section 120 is integrally formed
  • the middle pad section 120 may be divided into two or more parts (that is, formed separately). (It may be a combination of two or more members.)
  • the left kneepad portion 110L and the right kneepad portion 110R are not limited to being integrally formed, and may be divided into two or more parts (that is, two or more separately formed parts). ) may also be a combination of members.
  • planar shapes of the straddle pad 100, knee pad section 110, and middle pad section 120 are not limited to those illustrated in FIGS. 2A and 4B.
  • the straddle pad 100 may have a microstructure to achieve desired functionality and mechanical properties.
  • the straddle pad 100 may have a lattice structure including a plurality of unit structures in a three-dimensional lattice shape.
  • the Poisson's ratio of the straddle pad 100 can be adjusted to realize a negative Poisson's ratio.
  • Poisson's ratio can be made to differ from each other (that is, the straddle pad 100 can have a Poisson's ratio distribution).
  • the straddle pad 100 has a lattice structure, breathability is improved and stuffiness can be suppressed.
  • FIGS. 5A and 5B show an example of a straddle pad 100 having a lattice structure.
  • FIG. 5A is an enlarged plan view of a part of the straddle pad 100, as seen from the Z direction.
  • FIG. 5B is an enlarged cross-sectional view of a part of the straddle pad 100, showing a cross section parallel to the YZ plane.
  • the lattice structure of the straddle pad 100 has a plurality of unit structures U.
  • Each unit structure U is constructed by combining a plurality of beams b.
  • the portion LP occupied by the plurality of unit structures U in the straddle pad 100 will be referred to as a "lattice portion", and the space SP other than the lattice portion LP (the space partitioned by the lattice portion LP) will be referred to as a "void portion”. .
  • the lattice portion LP has a shape in which a plurality of triangular pyramids (more precisely, portions corresponding to the sides of the triangular pyramids) are combined, and the sides extending in the Z direction are omitted.
  • the straddle pad 100 has a lattice structure
  • the lattice portion LP when a load is applied to the straddle pad 100, the lattice portion LP will be soft until it is sufficiently deformed and the gap SP will collapse. After that, it is possible to achieve a behavior that becomes stiff to some extent.
  • the straddle pad 100 can be made hard to improve the grip feeling (to avoid feeling unreliable due to being too soft). In other words, it is possible to both reduce the feeling of pressure and improve the grip feeling.
  • the straddle pad 100 since the straddle pad 100 has a lattice structure, breathability is improved and stuffiness can be suppressed.
  • the lattice structure illustrated in FIGS. 5A and 5B can realize a negative Poisson's ratio. For example, as shown in FIG. 6, when a compressive load is applied in parallel to the Z direction to the first portion P1 having the lattice structure illustrated in FIGS. 5A and 5B, the and compressive strain occurs in the Y direction.
  • the structure for realizing a negative Poisson's ratio is not limited to the structures illustrated in FIGS. 5A and 5B, and various known auxetic structures can be used.
  • a portion of the straddle pad 100 other than the first portion P1 may have a positive Poisson's ratio, and such a portion may have a positive Poisson's ratio. It may have a lattice structure that achieves Poisson's ratio.
  • FIGS. 7A and 7B An example of a lattice structure having a positive Poisson's ratio is shown in FIGS. 7A and 7B.
  • FIG. 7A is an enlarged plan view of a part of the second portion P2 having a positive Poisson, as seen from the Z direction.
  • FIG. 7B is an enlarged cross-sectional view of a part of the second portion P2, showing a cross section parallel to the YZ plane.
  • the unit structure U of the lattice structure is in the shape of a cube (more precisely, a portion corresponding to the sides of the cube), and the lattice portion LP has a plurality of cubes arranged continuously. It has a shape. Even when a lattice structure having a positive Poisson's ratio as illustrated in FIGS. 7A and 7B is employed, it is possible to reduce the feeling of pressure, improve the grip feeling, and suppress stuffiness.
  • lattice structure that realizes positive Poisson is not limited to the structures illustrated in FIGS. 7A and 7B, and various known lattice structures (three-dimensional mesh structures) can be used.
  • the straddle pad 100 has a lattice structure, there may be a region where only the voids SP exist along the thickness direction, but the thickness of the straddle pad 100 is determined by the lattice portion LP and the void SP. It is defined by the outer edge (outline) of the straddle pad 100 that includes both.
  • the size, shape, arrangement, etc. of the unit structure U of the lattice structure do not necessarily have to be strictly regular, and some irregularity may be tolerated as long as the desired function and mechanical properties are achieved. .
  • FIG. 8 is a cross-sectional view schematically showing the straddle pad 100.
  • the straddle pad 100 includes two types of portions P3 and P4 that have different hardnesses.
  • the relatively hard part P3 will be referred to as the "third part” and the relatively soft part P4 will be referred to as the "fourth part”.
  • the straddle pad 100 includes the third portion P3 and the fourth portion P4 having different hardnesses, in other words, because the straddle pad 100 has a hardness distribution, the straddle pad 100 The firmness can be set according to the part of the body that comes into contact with it, improving comfort.
  • the relatively hard third portion P3 is included in the knee pad portion 110
  • the relatively soft fourth portion P4 is included in the middle pad portion 120.
  • the entire left knee pad portion 110L may have substantially the same hardness (that is, the entire left knee pad portion 110L is the third portion P3), or may not. . That is, the left kneepad portion 110L may have a portion having a different hardness from the third portion P3.
  • the entire right knee pad portion 110R may or may not have substantially the same hardness (that is, the entire right knee pad portion 110R is the third portion P3). In other words, the right kneepad portion 110R may have a portion having a different hardness from the third portion P3.
  • the hardness may or may not be substantially the same in the entire middle pad portion 120 (that is, the entire middle pad portion 120 is the fourth portion P4). That is, the middle pad portion 120 may have a portion having a different hardness from the fourth portion P4.
  • the hardness of a part or the entire straddle pad 100 may change continuously. Further, a portion (intermediate hardness portion) that is softer than the third portion P3 and harder than the fourth portion P4 may be arranged between the third portion P3 and the fourth portion P4.
  • the central portion of the knee pad portion 110 may be the third portion P3
  • the central portion of the middle pad portion 120 may be the fourth portion P4
  • the other portions may be intermediate hardness portions.
  • the hardness of the straddle pad 100 (the hardness of the third portion P3 and the fourth portion P4) is determined by the load displacement obtained by conducting a load test in accordance with JASO (Japan Automobile Engineers Society Standard) B408-89, for example. It can be evaluated using a curve. Specifically, in the load displacement curve obtained in this way, the load at a predetermined amount of displacement can be regarded as "hardness".
  • the samples forming combination A will be referred to as knee pad part sample #1 and middle pad part sample #3.
  • the samples forming combination B are referred to as knee pad part sample #2 and middle pad part sample #4.
  • FIGS. 9A and 9B show load displacement curves obtained by the above-described load test for knee pad samples #1 and #2 and middle pad samples #3 and #4.
  • the hardness of the third portion P3 included in the knee pad portion 110 is 1.2 times or more than the hardness of the fourth portion P4 included in the middle pad portion 120. It can be said that it is preferable.
  • FIG. 10A is a plan view schematically showing the straddle pad 100.
  • FIG. 10B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 10B-10B' in FIG. 10A.
  • the maximum thickness of the middle pad section 120 is greater than the minimum thickness of each knee pad section 110 and greater than or equal to the maximum thickness of each knee pad section 110.
  • the thickness t3 of the middle pad section 120 is constant (substantially the same) throughout the middle pad section 120.
  • the left kneepad portion 110L is divided into two regions 110La and 110Lb (referred to as a "first region” and a “second region”, respectively) when paying attention to its thickness t1.
  • Ru In the first region 110La, the thickness t1 of the left kneepad portion 110L is substantially the same.
  • the second region 110Lb is located between the first region 110La and the middle pad portion 120. In the second region 110Lb, the thickness t1 of the left knee pad portion 110L decreases from the middle pad portion 120 side toward the first region 110La side.
  • the right kneepad portion 110R is divided into two regions 110Ra and 110Rb (referred to as a "third region” and a "fourth region", respectively).
  • the third region 110Ra the thickness t2 of the right kneepad portion 110R is substantially the same.
  • the fourth region 110Rb is located between the third region 110Ra and the middle pad portion 120.
  • the thickness t2 of the right knee pad portion 110L decreases from the middle pad portion 120 side toward the third region 110Ra side.
  • the thickness t1 in the first region 110La of the left kneepad portion 110L and the thickness t2 in the third region 110Ra of the right kneepad portion 110R are, for example, substantially the same, but are not limited thereto.
  • the maximum thickness of the middle pad section 120 is greater than the minimum thickness of each knee pad section 110 and greater than or equal to the maximum thickness of each knee pad section 110. It is. In other words, the straddle pad 100 has a thickness distribution. Since the straddle pad 100 has a thickness distribution, it is possible to appropriately distribute the body pressure according to the part of the rider's body that is in contact with the straddle pad 100, thereby improving comfort. By making the maximum thickness of the middle pad section 120 larger than the minimum thickness of each knee pad section 110 and greater than or equal to the maximum thickness of each knee pad section 110, it is possible to improve the fit and vibration reduction properties of the middle pad section 120. , it is possible to suitably hold the lower body (knee grip) in the knee pad portion 110.
  • the maximum thickness of the middle pad section 120 is preferably larger than the maximum thickness of each knee pad section 110, as will be exemplified later.
  • the maximum thickness of the middle pad portion 120 is not particularly limited. Similarly, the maximum thickness of each of the pair of kneepad sections 110 is not particularly limited.
  • the maximum thickness of the middle pad section 120 is preferably 150% or more, and preferably 200% or more, of the minimum thickness of the knee pad section 110. is more preferable.
  • the maximum thickness of the middle pad section 120 is preferably 150% or more, and preferably 200% or more, of the maximum thickness of the knee pad section 110. is more preferable.
  • the straddle pad 100 has a lattice structure as described above, for example, when a load is applied to the straddle pad 100, the behavior is soft at first and becomes hard after being crushed to a certain extent. I can do it.
  • the maximum thickness of the middle pad portion 120 is preferably 10 mm or more, and more preferably 20 mm or more.
  • the kneepad portion 110 may have low resilience, that is, the speed at which it returns to its original shape (restoration speed) when the applied load is removed may be relatively slow.
  • the knee pad section 110 has low resilience, the knee pad section 110 is less likely to get in the way when the knee grip is released and the leg is lowered, so that the leg can be lowered more easily.
  • FIGS. 11A and 11B show other configurations of the straddle pad 100 having a thickness distribution.
  • FIG. 11A is a plan view schematically showing the straddle pad 100.
  • FIG. 11B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 11B-11B' in FIG. 11A.
  • the thickness t3 of the middle pad section 120 is constant (substantially the same) throughout the middle pad section 120. Further, the thickness t1 of the left kneepad portion 110L is not constant over the entire left kneepad portion 110L, but decreases as the distance from the middle pad portion 120 increases. Similarly, the thickness t2 of the right knee pad portion 110R is not constant over the entire right knee pad portion 110R, but decreases as the distance from the middle pad portion 120 increases.
  • FIGS. 12A and 12B show still another configuration of the straddle pad 100 having a thickness distribution.
  • FIG. 12A is a plan view schematically showing the straddle pad 100.
  • FIG. 12B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 12B-12B' in FIG. 12A.
  • the middle pad section 120 is not continuous with the left kneepad section 110L, nor is it continuous with the right kneepad section 110R. That is, the left kneepad section 110L is separated from the middle pad section 120, and the right kneepad section 110R is also separated from the middle pad section 120. In other words, the middle pad section 120 and the pair of knee pad sections 110 are not integrally formed.
  • the thickness t1 of the left kneepad portion 110L is constant (substantially the same) throughout the left kneepad portion 110L
  • the thickness t2 of the right kneepad portion 110R is It is constant (substantially the same) throughout the portion 110R.
  • the thickness t3 of the middle pad section 120 is constant (substantially the same) throughout the middle pad section 120.
  • the straddle pad 100 has a thickness distribution (more specifically, the maximum thickness of the middle pad section 120 is larger than the maximum thickness of each knee pad section 110). This has the effect of improving comfort.
  • the thickness distribution of the straddle pad 100 is not limited to that illustrated in FIGS. 10B, 11B, and 12B.
  • the configuration shown in FIG. 10B may be modified as shown in FIG. 13A.
  • the thickness t3 of the middle pad portion 120 is not constant.
  • the middle pad section 120 is located between the fifth region 120a where the thickness t3 is the maximum and the center of the middle pad section 120 in the left-right direction (direction parallel to the Y direction), and the thickness t3 is smaller than the maximum thickness.
  • a sixth region 120b is located between the fifth region 120a and the sixth region 120b, and in the seventh region 120c, the thickness t3 is the same as the thickness t3 from the sixth region 120b side. 5 toward the region 120a side.
  • the configuration shown in FIG. 10B may be modified as shown in FIG. 13B.
  • the thickness t1 of the left kneepad portion 110L is constant (substantially the same) over the entire left kneepad portion 110L
  • the thickness t2 of the right kneepad portion 110R is constant over the entire right kneepad portion 110R. (substantially the same).
  • the thickness changes stepwise at the boundary between the left kneepad section 110L and the middle pad section 120
  • the thickness changes stepwise at the boundary between the right kneepad section 110R and the middle pad section 120.
  • the middle pad portion 120 may have a thickness distribution in the vertical direction (the vertical direction when the straddling portion pad 100 is attached to the straddling portion).
  • An example of such a middle pad section 120 is shown in FIG. 13C.
  • FIG. 13C is a cross-sectional view schematically showing the straddle pad 100, and corresponds to a cross section taken along line 13C-13C' in FIG. 10A.
  • the middle pad section 120 includes two regions 120u and 120l that are adjacent to each other along the vertical direction.
  • One region (upper region) 120u located relatively above of the two regions 120u includes a thinner portion than the other region (lower region) 120l. More specifically, the upper region 120u becomes thinner as it moves away from the lower region 120l. Since the middle pad portion 120 has such a thickness distribution in the vertical direction, the difference in level between the fuel tank 5 and the straddle pad 100 can be reduced and a sense of unity can be improved.
  • middle pad portion 120 may be divided into an upper and a lower portion.
  • the above-described upper region 120u and lower region 120l may not be integrated but may be separated.
  • the straddle pad 100 is The portion where the thickness begins to decrease when considering the change in thickness toward the middle pad portion 120 and each knee pad portion 110 may be defined as the boundary between the middle pad portion 120 and each knee pad portion 110.
  • the configuration in which the straddle pad 100 has a thickness distribution as described above can be combined with the configuration in which the straddle pad 100 has a hardness distribution.
  • Straddle pad 100 can be suitably formed using, for example, additive manufacturing techniques.
  • Additive manufacturing technology is a technology that forms three-dimensional structures (three-dimensional objects) using a 3D printer. According to additive manufacturing technology, even a three-dimensional structure having a complicated shape can be easily manufactured based on 3D CAD data or 3DCG data.
  • a resin material including elastomer and gel
  • a rubber material can be suitably used as the material of the straddle pad 100.
  • the resin material and rubber material various known resin materials and rubber materials can be used.
  • a PolyJet 3D printer proposed by Stratasys can be used.
  • modeling is performed by alternately repeating jetting of liquid particles containing an ultraviolet curable material from a nozzle of an inkjet head and curing by ultraviolet irradiation.
  • a 3D printer other than the PolyJet method may be used.
  • the design of the unit structure U can be different for each part.
  • Poisson's ratio can be made different for each part, and the hardness can be made different for each part. Therefore, in the straddle pad 100 having a lattice structure, It becomes easy to give the straddle pad 100 a Poisson's ratio distribution or a hardness distribution.
  • the straddle pad 100 includes a pair of knee pad portions 110 and the middle pad portion 120 has been exemplified, but the straddle pad 100 is not limited to such a configuration.
  • the straddle pad 100 may include only the middle pad section 120, only the pair of knee pad sections 110, or only the left knee pad section 110L or the right knee pad section 110R.
  • the straddle pad 100 including the portion (first portion) P1 having a negative Poisson's ratio has the effect of improving comfort.
  • the straddle pad 100 may be wrapped in a skin material (hereinafter referred to as a "pad cover") made of cloth, leather, or the like.
  • a pad cover a skin material
  • the left kneepad section 110L and the right kneepad section 110R are separated from the middle pad section 120, the middle pad section 120, the left kneepad section 110L and the right kneepad section 110R are each wrapped in a separate pad cover. Alternatively, they may be integrally wrapped by one pad cover.
  • the straddle pad 100 may be attached to a base material (hereinafter referred to as a "pad base") made of cloth, leather, or the like.
  • the left kneepad section 110L and the right kneepad section 110R are separated from the middle pad section 120, the middle pad section 120, the left kneepad section 110L and the right kneepad section 110R are attached to separate pad bases. or may be attached on one pad base.
  • a motorcycle has been illustrated as an example of a straddle-type vehicle, but the straddle pad according to an embodiment of the present invention can also be suitably used for a straddle-type vehicle other than a motorcycle, such as a personal watercraft. It can also be used for Further, the straddle pad according to the embodiment of the present invention can also be suitably used for a saddle type vehicle having an electric motor instead of (or in addition to) an internal combustion engine as a driving source.
  • the component placed directly in front of the seat may not be the fuel tank (for example, a dummy tank or battery storage case), and in that case, the "straddle part" may be the fuel tank. It may not include.
  • a cover may be provided to cover the fuel tank. In that case (ie, if the straddle includes such a cover), the straddle pad is attached to the cover.
  • the straddle pad 100 is a straddle pad 100 for a straddle-type vehicle that is attached to the straddle portion of the straddle-type vehicle 1 so that at least a portion thereof is in contact with a rider. It includes a first portion P1 having a negative Poisson's ratio.
  • the straddle pad 100 includes a portion (first portion) P1 having a negative Poisson's ratio (that is, having an auxetic structure), so that the portion P1 wraps around the load point when a load is applied. It transforms like this. Therefore, the fit to the rider's body is improved, and comfort is improved.
  • the straddle pad 100 includes a second portion P2 having a Poisson's ratio different from the Poisson's ratio of the first portion P1.
  • the straddle pad 100 according to the embodiment of the present invention may include a second portion P2 having a Poisson's ratio different from the Poisson's ratio of the first portion P1. That is, the straddle pad 100 according to the embodiment of the present invention may have a distribution in Poisson's ratio. Since the straddle pad 100 has a distribution in Poisson's ratio, it is possible to set a fit according to the body part of the rider that is in contact with the straddle pad 100, further improving comfort.
  • the straddle pad 100 includes a pair of knee pad sections 110 arranged in contact with the rider's knees and/or inner thighs, and a middle pad section 120 located between the pair of knee pad sections 110.
  • Each of the pair of kneepad portions 110 includes the first portion P1.
  • the fit of the kneepad section 110 can be improved. Therefore, even if the knee grip is weak, the body can be firmly held, making the knee grip easier and improving comfort.
  • the straddle pad 100 includes a third portion P3 and a fourth portion P4 that have different hardnesses.
  • the straddle pad 100 according to the embodiment of the present invention may include a third portion P3 and a fourth portion P4 having different hardnesses. That is, the straddle pad 100 according to the embodiment of the present invention may have a hardness distribution. Since the straddle pad 100 has a hardness distribution, the hardness can be set according to the body part that comes into contact with the straddle pad 100, further improving comfort.
  • the straddle pad 100 includes a pair of knee pad sections 110 arranged in contact with the rider's knees and/or inner thighs, and a middle pad section 120 located between the pair of knee pad sections 110.
  • the third portion P3 is harder than the fourth portion P4, each of the pair of knee pad portions 110 includes the third portion P3, and the middle pad portion 120 includes the fourth portion P4. included.
  • the relatively hard third part P3 is included in the knee pad part 110
  • the relatively soft fourth part P4 is included in the middle pad part 120, so that the knee pad part, which is the part where you want to firmly support your body when you grip the knee, 110 can be made hard
  • the middle pad part 120 which is the part where it is desired to disperse body pressure and reduce the feeling of pressure, can be made soft.
  • the maximum thickness of the middle pad section 120 is greater than the minimum thickness of each of the pair of knee pad sections 110 and greater than or equal to the maximum thickness of each of the pair of knee pad sections 110.
  • the maximum thickness of the middle pad section 120 may be greater than the minimum thickness of each knee pad section 110 and greater than or equal to the maximum thickness of each knee pad section 110. That is, the straddle pad 100 may have a thickness distribution. Since the straddle pad 100 has a thickness distribution, it is possible to appropriately distribute the body pressure according to the part of the rider's body that is in contact with the straddle pad 100, thereby improving comfort. By making the maximum thickness of the middle pad section 120 larger than the minimum thickness of each knee pad section 110 and greater than or equal to the maximum thickness of each knee pad section 110, it is possible to improve the fit and vibration reduction properties of the middle pad section 120. , it is possible to suitably hold the lower body (knee grip) in the knee pad portion 110.
  • the maximum thickness of the middle pad section 120 is greater than the maximum thickness of each of the pair of knee pad sections 110.
  • the maximum thickness of the middle pad section 120 is preferably larger than the maximum thickness of each knee pad section 110.
  • the straddle pad 100 has a lattice structure including a plurality of unit structures U in a three-dimensional lattice shape.
  • the straddle pad 100 may have a lattice structure including a plurality of unit structures U in a three-dimensional lattice shape.
  • the Poisson's ratio of the straddle pad 100 can be adjusted to realize a negative Poisson's ratio.
  • Poisson's ratios can be made to differ from each other, or the hardness can be made to differ from each other. (Can have a Poisson's ratio distribution or a hardness distribution.)
  • breathability is improved and stuffiness can be suppressed.
  • the straddle pad 100 is formed from a resin material or a rubber material by additive manufacturing techniques.
  • the straddle pad 100 may be formed from a resin material or a rubber material using additive manufacturing techniques, for example.
  • additive manufacturing technology the straddle pad 100 having a lattice structure can be suitably formed, and the straddle pad 100 having a negative Poisson's ratio can be easily obtained.
  • the straddle-type vehicle 1 includes a straddle pad 100 having any of the configurations described above.
  • the straddle pad 100 according to the embodiment of the present invention is suitably used in various saddle type vehicles 1.
  • straddle-type vehicle straddle pad that improves comfort.
  • the straddle pad according to the embodiment of the present invention is suitably used in various saddle type vehicles.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)

Abstract

A pad (100) for a straddled part of a saddled vehicle (1) is attached to the straddled part of the saddled vehicle so that at least a part thereof contacts a rider. The pad for the straddled part includes a first part (P1) that has a negative Poisson's ratio.

Description

鞍乗型車両用跨ぎ部パッドおよび鞍乗型車両Straddle type vehicle straddle pad and saddle type vehicle
　本発明は、鞍乗型車両用跨ぎ部パッドおよび鞍乗型車両に関する。 The present invention relates to a straddle pad for a straddle-type vehicle and a straddle-type vehicle.
　自動二輪車のタンクの傷付きを防止する目的で、タンクの後部（ライダーの衣服等に接触する部分）にタンクパッドと呼ばれるパッド部材が貼り付けられることがある。タンクパッドは、例えば特許文献１に開示されている。 In order to prevent the tank of a motorcycle from being damaged, a pad member called a tank pad is sometimes attached to the rear of the tank (the part that comes into contact with the rider's clothing, etc.). A tank pad is disclosed in Patent Document 1, for example.
　また、ニーグリップ時にライダーの膝等を滑りにくくするために、タンクの側部にニーパッドと呼ばれるパッド部材が貼り付けられることがある。ニーパッドは、例えば特許文献２に開示されている。 In addition, a pad member called a knee pad is sometimes attached to the side of the tank to prevent the rider's knees from slipping during knee grip. A kneepad is disclosed in Patent Document 2, for example.
国際公開第２０１６／１７０６８９号International Publication No. 2016/170689 特開２０１８－５２４５４号公報JP 2018-52454 Publication
　本願発明者は、タンクパッドおよびニーパッド（後述するように本願明細書では「跨ぎ部パッド」と総称することがある）に新たな付加価値を付与すベく、鋭意検討を行った。 The inventor of the present application has conducted extensive studies in order to add new added value to tank pads and knee pads (which may be collectively referred to as "straddle pads" in the specification of the present application as described later).
　本発明の実施形態の目的は、快適性が向上する鞍乗型車両用跨ぎ部パッドを提供することにある。 An object of the embodiments of the present invention is to provide a straddle-type vehicle straddle pad that improves comfort.
　本明細書は、以下の項目に記載の鞍乗型車両用跨ぎ部パッドおよび鞍乗型車両を開示している。 This specification discloses a straddle-type vehicle straddle pad and a straddle-type vehicle described in the following items.
　［項目１］
　少なくとも一部がライダーに接するように鞍乗型車両の跨ぎ部に取り付けられる鞍乗型車両用跨ぎ部パッドであって、
　負のポアソン比を有する第１部分を含む、跨ぎ部パッド。 [Item 1]
A straddle-type vehicle straddle pad that is attached to the straddle-type vehicle so that at least a portion of the pad is in contact with a rider,
A straddle pad including a first portion having a negative Poisson's ratio.
　本発明の実施形態による跨ぎ部パッドは、負のポアソン比を有する（つまりオーセチック構造を有する）部分（第１部分）を含むので、その部分は、荷重が加えられると荷重点を包み込むように変形する。そのため、ライダーの身体に対するフィット感が向上するので、快適性が向上する。 The straddle pad according to an embodiment of the present invention includes a portion (first portion) having a negative Poisson's ratio (i.e., having an auxetic structure), so that the portion deforms to wrap around the load point when a load is applied. do. Therefore, the fit to the rider's body is improved, and comfort is improved.
　［項目２］
　前記第１部分のポアソン比と異なるポアソン比を有する第２部分を含む、項目１に記載の跨ぎ部パッド。 [Item 2]
The straddle pad of item 1, comprising a second portion having a Poisson's ratio different from the Poisson's ratio of the first portion.
　本発明の実施形態による跨ぎ部パッドは、第１部分のポアソン比と異なるポアソン比を有する第２部分を含んでいてもよい。つまり、本発明の実施形態による跨ぎ部パッドは、ポアソン比に分布を有していてもよい。跨ぎ部パッドがポアソン比に分布を有することにより、跨ぎ部パッドに接するライダーの身体部位に応じたフィット感を設定することができ、快適性がいっそう向上する。 A straddle pad according to an embodiment of the present invention may include a second portion having a Poisson's ratio that is different from the Poisson's ratio of the first portion. That is, the straddle pad according to the embodiment of the present invention may have a distribution in Poisson's ratio. Since the straddle pad has a distribution in Poisson's ratio, it is possible to set the fit according to the part of the rider's body that is in contact with the straddle pad, further improving comfort.
　［項目３］
　ライダーの膝および／または内腿に接する位置に配置される一対のニーパッド部と、
　前記一対のニーパッド部の間に位置するミドルパッド部と、
を有し、
　前記一対のニーパッド部のそれぞれに前記第１部分が含まれる、項目１または２に記載の跨ぎ部パッド。 [Item 3]
a pair of knee pads arranged in contact with the rider's knees and/or inner thighs;
a middle pad section located between the pair of knee pad sections;
has
The straddle pad according to item 1 or 2, wherein each of the pair of knee pad portions includes the first portion.
　負のポアソン比を有する第１部分がニーパッド部に含まれていることにより、ニーパッド部におけるフィット感を高くすることができる。そのため、ニーグリップが弱くても身体をしっかりホールドできので、ニーグリップが容易となり、快適性が向上する。 By including the first portion having a negative Poisson's ratio in the kneepad section, it is possible to improve the fit in the kneepad section. Therefore, even if the knee grip is weak, the body can be firmly held, making the knee grip easier and improving comfort.
　［項目４］
　互いに硬さが異なる第３部分および第４部分を含む、項目１または２に記載の跨ぎ部パッド。 [Item 4]
The straddle pad according to item 1 or 2, comprising a third portion and a fourth portion having different hardnesses.
　本発明の実施形態による跨ぎ部パッドは、互いに硬さが異なる第３部分および第４部分を含んでいてもよい。つまり、本発明の実施形態による跨ぎ部パッドは、硬さ分布を有していてもよい。跨ぎ部パッドが硬さ分布を有することにより、跨ぎ部パッドに接する身体部位に応じた硬さを設定することができ、快適性がいっそう向上する。 The straddle pad according to the embodiment of the present invention may include a third portion and a fourth portion having different hardnesses. That is, the straddle pad according to the embodiment of the present invention may have a hardness distribution. Since the straddle pad has a hardness distribution, the hardness can be set according to the body part that comes into contact with the straddle pad, further improving comfort.
　［項目５］
　ライダーの膝および／または内腿に接する位置に配置される一対のニーパッド部と、
　前記一対のニーパッド部の間に位置するミドルパッド部と、
を有し、
　前記第３部分は、前記第４部分よりも硬く、
　前記一対のニーパッド部のそれぞれに前記第３部分が含まれ、
　前記ミドルパッド部に前記第４部分が含まれる、項目４に記載の跨ぎ部パッド。 [Item 5]
a pair of knee pads arranged in contact with the rider's knees and/or inner thighs;
a middle pad section located between the pair of knee pad sections;
has
The third portion is harder than the fourth portion,
Each of the pair of kneepad portions includes the third portion,
The straddle pad according to item 4, wherein the middle pad portion includes the fourth portion.
　相対的に硬い第３部分がニーパッド部に含まれ、相対的に柔らかい第４部分がミドルパッド部に含まれていることにより、ニーグリップ時に身体をしっかり支持したい部位であるニーパッド部を硬くするとともに、体圧を分散して圧迫感を軽減したい部位であるミドルパッド部を柔らかくすることができる。 The relatively hard third part is included in the knee pad part, and the relatively soft fourth part is included in the middle pad part, thereby making the knee pad part, which is the part where you want to firmly support the body during knee grip, hard. , it is possible to soften the middle pad part, which is the area where you want to disperse body pressure and reduce the feeling of pressure.
　［項目６］
　前記ミドルパッド部の最大厚さは、前記一対のニーパッド部のそれぞれの最小厚さよりも大きく、かつ、前記一対のニーパッド部のそれぞれの最大厚さ以上である、項目３または５に記載の跨ぎ部パッド。 [Item 6]
The straddle portion according to item 3 or 5, wherein the maximum thickness of the middle pad portion is greater than the minimum thickness of each of the pair of knee pad portions and greater than or equal to the maximum thickness of each of the pair of knee pad portions. pad.
　ミドルパッド部の最大厚さは、各ニーパッド部の最小厚さよりも大きく、かつ、各ニーパッド部の最大厚さ以上であってもよい。つまり、跨ぎ部パッドは、厚さ分布を有していてもよい。跨ぎ部パッドが厚さ分布を有することにより、跨ぎ部パッドに接するライダーの身体部位に応じた適切な体圧分散を図ることができ、快適性が向上する。ミドルパッド部の最大厚さが各ニーパッド部の最小厚さよりも大きく、かつ、各ニーパッド部の最大厚さ以上であることにより、ミドルパッド部におけるフィット感および振動低減性を高めつつ、ニーパッド部における下半身の保持（ニーグリップ）を好適に行うことができる。 The maximum thickness of the middle pad portion may be greater than the minimum thickness of each knee pad portion and greater than or equal to the maximum thickness of each knee pad portion. That is, the straddle pad may have a thickness distribution. Since the straddle pad has a thickness distribution, it is possible to appropriately distribute body pressure according to the part of the rider's body that is in contact with the straddle pad, thereby improving comfort. By making the maximum thickness of the middle pad section larger than the minimum thickness of each knee pad section and greater than or equal to the maximum thickness of each knee pad section, the fit and vibration reduction properties of the middle pad section are improved, while the maximum thickness of the knee pad section is increased. It is possible to suitably hold the lower body (knee grip).
　［項目７］
　前記ミドルパッド部の最大厚さは、前記一対のニーパッド部のそれぞれの最大厚さよりも大きい、項目６に記載の跨ぎ部パッド。 [Item 7]
7. The straddle pad according to item 6, wherein the maximum thickness of the middle pad portion is greater than the maximum thickness of each of the pair of knee pad portions.
　ミドルパッド部におけるフィット感および振動低減性を高める観点からは、ミドルパッド部の最大厚さは、各ニーパッド部の最大厚さよりも大きいことが好ましい。 From the viewpoint of improving the fit and vibration reduction properties of the middle pad section, the maximum thickness of the middle pad section is preferably larger than the maximum thickness of each knee pad section.
　［項目８］
　三次元格子状の複数の単位構造体を含むラティス構造を有する、項目１から７のいずれかに記載の跨ぎ部パッド。 [Item 8]
8. The straddle pad according to any one of items 1 to 7, which has a lattice structure including a plurality of unit structures in a three-dimensional lattice shape.
　跨ぎ部パッドは、三次元格子状の複数の単位構造体を含むラティス構造を有していてもよい。ラティス構造の単位構造体の設計を適宜変更することにより、跨ぎ部パッドのポアソン比を調整して負のポアソン比を実現することができる。また、跨ぎ部パッドの複数の部分において、単位構造体の設計を互いに異ならせることによってポアソン比を互いに異ならせたり、硬さを互いに異ならせたりすることもできる（つまり跨ぎ部パッドにポアソン比の分布を持たせたり、硬さの分布を持たせたりすることができる）。さらに、跨ぎ部パッドがラティス構造を有することにより、通気性が向上し、蒸れを抑制することができる。 The straddle pad may have a lattice structure including a plurality of unit structures in a three-dimensional lattice shape. By appropriately changing the design of the unit structure of the lattice structure, the Poisson's ratio of the straddle pad can be adjusted to realize a negative Poisson's ratio. Furthermore, by making the design of the unit structures different in multiple parts of the straddle pad, the Poisson's ratio can be made to differ from each other, or the hardness can be made to differ from each other (in other words, the straddle pad can have a Poisson's ratio (can have a hardness distribution or a hardness distribution). Furthermore, since the straddle pad has a lattice structure, breathability is improved and stuffiness can be suppressed.
　［項目９］
　付加製造技術により樹脂材料またはゴム材料から形成されている、項目１から８のいずれかに記載の跨ぎ部パッド。 [Item 9]
9. A straddle pad according to any of items 1 to 8, which is formed from a resin material or a rubber material by additive manufacturing techniques.
　本発明の実施形態による跨ぎ部パッドは、例えば、付加製造技術を用いて樹脂材料またはゴム材料から形成され得る。付加製造技術を用いることにより、ラティス構造を有する跨ぎ部パッドを好適に形成することができ、負のポアソン比を有する跨ぎ部パッドを容易に得ることができる。 Straddle pads according to embodiments of the invention may be formed from resin or rubber materials using additive manufacturing techniques, for example. By using additive manufacturing technology, a straddle pad having a lattice structure can be suitably formed, and a straddle pad having a negative Poisson's ratio can be easily obtained.
　［項目１０］
　項目１から９のいずれかに記載の跨ぎ部パッドを備えた鞍乗型車両。 [Item 10]
A straddle-type vehicle comprising the straddle pad according to any one of items 1 to 9.
　本発明の実施形態による跨ぎ部パッドは、各種の鞍乗型車両に好適に用いられる。 The straddle pad according to the embodiment of the present invention is suitably used in various saddle type vehicles.
　本発明の実施形態によると、快適性が向上する鞍乗型車両用跨ぎ部パッドを提供することができる。 According to the embodiments of the present invention, it is possible to provide a straddle-type vehicle straddle pad that improves comfort.
本発明の実施形態による自動二輪車１を模式的に示す左側面図である。1 is a left side view schematically showing a motorcycle 1 according to an embodiment of the present invention. 自動二輪車１が備える跨ぎ部パッド１００を模式的に示す平面図である。FIG. 2 is a plan view schematically showing a straddle pad 100 included in the motorcycle 1. FIG. 跨ぎ部パッド１００を模式的に示す断面図であり、図２Ａ中の２Ｂ－２Ｂ’線に沿った断面を示している。2B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 2B-2B' in FIG. 2A. 正のポアソン比を有する部材ＰＰに圧縮荷重を加えたときの変化を示す図である。FIG. 3 is a diagram showing changes when a compressive load is applied to a member P having a positive Poisson's ratio. 負のポアソン比を有する部材ＰＮに圧縮荷重を加えたときの変化を示す図である。FIG. 6 is a diagram showing changes when a compressive load is applied to a member PN having a negative Poisson's ratio. 跨ぎ部パッド１００を模式的に示す断面図である。FIG. 2 is a cross-sectional view schematically showing a straddle pad 100. FIG. 跨ぎ部パッド１００を模式的に示す平面図である。FIG. 2 is a plan view schematically showing a straddle pad 100. FIG. 跨ぎ部パッド１００を模式的に示す断面図であり、図４Ｂ中の４Ｃ－４Ｃ’線に沿った断面を示している。4B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 4C-4C' in FIG. 4B. ラティス構造を有する跨ぎ部パッド１００の一部を拡大して示す平面図であり、Ｚ方向から見た図である。FIG. 2 is an enlarged plan view of a part of the straddle pad 100 having a lattice structure, as seen from the Z direction. ラティス構造を有する跨ぎ部パッド１００の一部を拡大して示す断面図であり、ＹＺ面に平行な断面を示している。FIG. 2 is an enlarged cross-sectional view of a part of the straddle pad 100 having a lattice structure, showing a cross section parallel to the YZ plane. 図５Ｂに例示したラティス構造を有する第１部分Ｐ１に対し、Ｚ方向に平行に圧縮荷重が加えられたときにＸ方向およびＹ方向に生じるひずみを示す図である。FIG. 5B is a diagram showing the strain that occurs in the X direction and the Y direction when a compressive load is applied in parallel to the Z direction to the first portion P1 having the lattice structure illustrated in FIG. 5B. 正のポアソンを有する第２部分Ｐ２の一部を拡大して示す平面図であり、Ｚ方向から見た図である。It is a top view which expands and shows a part of 2nd part P2 which has a positive Poisson, and is a figure seen from the Z direction. 正のポアソンを有する第２部分Ｐ２の一部を拡大して示す断面図であり、ＹＺ面に平行な断面を示している。FIG. 2 is an enlarged cross-sectional view of a part of the second portion P2 having a positive Poisson, showing a cross section parallel to the YZ plane. 跨ぎ部パッド１００を模式的に示す断面図である。FIG. 2 is a cross-sectional view schematically showing a straddle pad 100. FIG. 実走評価において乗車感の向上が感じられたサンプルの荷重変位曲線を示すグラフである。It is a graph showing a load displacement curve of a sample in which an improvement in riding feeling was felt in actual running evaluation. 実走評価において乗車感の向上が感じられたサンプルの荷重変位曲線を示すグラフである。It is a graph showing a load displacement curve of a sample in which an improvement in riding feeling was felt in actual running evaluation. 跨ぎ部パッド１００を模式的に示す平面図である。FIG. 2 is a plan view schematically showing a straddle pad 100. FIG. 跨ぎ部パッド１００を模式的に示す断面図であり、図１０Ａ中の１０Ｂ－１０Ｂ’線に沿った断面を示している。10B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 10B-10B' in FIG. 10A. 跨ぎ部パッド１００を模式的に示す平面図である。FIG. 2 is a plan view schematically showing a straddle pad 100. FIG. 跨ぎ部パッド１００を模式的に示す断面図であり、図１１Ａ中の１１Ｂ－１１Ｂ’線に沿った断面を示している。11B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 11B-11B' in FIG. 11A. 跨ぎ部パッド１００を模式的に示す平面図である。FIG. 2 is a plan view schematically showing a straddle pad 100. FIG. 跨ぎ部パッド１００を模式的に示す断面図であり、図１２Ａ中の１２Ｂ－１２Ｂ’線に沿った断面を示している。12B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 12B-12B' in FIG. 12A. 跨ぎ部パッド１００を模式的に示す断面図である。FIG. 2 is a cross-sectional view schematically showing a straddle pad 100. FIG. 跨ぎ部パッド１００を模式的に示す断面図である。FIG. 2 is a cross-sectional view schematically showing a straddle pad 100. FIG. 跨ぎ部パッド１００を模式的に示す断面図であり、図１０Ａ中の１３Ｃ－１３Ｃ’に沿った断面に相当する。10A is a cross-sectional view schematically showing the straddle pad 100, and corresponds to a cross section taken along line 13C-13C' in FIG. 10A.
　以下、図面を参照しながら本発明の実施形態を説明する。以下の説明では、本発明の実施形態による鞍乗型車両として自動二輪車を例示するが、本発明の実施形態による鞍乗型車両は、自動二輪車に限定されない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, a motorcycle will be exemplified as a straddle-type vehicle according to an embodiment of the present invention, but a straddle-type vehicle according to an embodiment of the present invention is not limited to a motorcycle.
　［自動二輪車および跨ぎ部パッドの構成］
　図１を参照しながら、本発明の実施形態による自動二輪車１を説明する。図１は、自動二輪車１を模式的に示す左側面図である。図１に示す自動二輪車１は、オンロード型の自動二輪車１である。なお、本発明の実施形態による自動二輪車は、オンロード型の自動二輪車１に限定されず、モペット型、オフロード型等の他の型式の自動二輪車であってもよい。 [Configuration of motorcycle and straddle pad]
A motorcycle 1 according to an embodiment of the present invention will be described with reference to FIG. FIG. 1 is a left side view schematically showing a motorcycle 1. FIG. The motorcycle 1 shown in FIG. 1 is an on-road type motorcycle 1. Note that the motorcycle according to the embodiment of the present invention is not limited to the on-road type motorcycle 1, but may be other types of motorcycles such as a moped type or an off-road type.
　以下の説明において、前、後、左、右は、それぞれ自動二輪車１に着座したライダーから見た前、後、左、右を意味する。また、上、下は、それぞれ自動二輪車１が水平面上に停止しているときの上、下を意味する。 In the following description, front, rear, left, and right mean the front, rear, left, and right, respectively, as seen from the rider seated on the motorcycle 1. Further, the terms "up" and "down" respectively refer to the top and bottom when the motorcycle 1 is stopped on a horizontal surface.
　図１に示すように、自動二輪車１は、車体フレーム１０と、前輪２と、後輪３と、内燃機関（エンジン）４とを備えている。また、自動二輪車１は、車体フレーム１０に支持される燃料タンク５と、ライダーが着座するシート６とを備えている。シート６は、燃料タンク５の後方に配置されている。 As shown in FIG. 1, the motorcycle 1 includes a body frame 10, a front wheel 2, a rear wheel 3, and an internal combustion engine 4. The motorcycle 1 also includes a fuel tank 5 supported by a body frame 10 and a seat 6 on which a rider sits. The seat 6 is arranged behind the fuel tank 5.
　車体フレーム１０は、ヘッドパイプ１１と、ヘッドパイプ１１から後方かつ車幅方向の外方に延びる左右のサイドフレーム１２と、左右のサイドフレーム１２の後端から下方に延びる左右のダウンフレーム１３とを含んでいる。ヘッドパイプ１１には、ハンドル１４が固定されたステアリングシャフト（不図示）が左右に回動可能に支持されている。ステアリングシャフトは、フロントフォーク７に固定されている。 The vehicle body frame 10 includes a head pipe 11, left and right side frames 12 extending rearward and outward in the vehicle width direction from the head pipe 11, and left and right down frames 13 extending downward from the rear ends of the left and right side frames 12. Contains. A steering shaft (not shown) to which a handle 14 is fixed is supported by the head pipe 11 so as to be rotatable left and right. The steering shaft is fixed to the front fork 7.
　前輪２は、フロントフォーク７に支持されている。後輪３は、リアアーム８の後端部に支持されている。リアアーム８の前端部は、ピボット軸９により、ダウンフレーム１３に上下に揺動可能に支持されている。前輪２は、従動輪である。後輪３は、エンジン４によって駆動される駆動輪である。エンジン４と後輪３とは、チェーン１５によって連結されている。チェーン１５は、エンジン４の動力を後輪３に伝達する動力伝達部材の一例である。動力伝達部材は、チェーン１５に限定されず、伝動ベルト、ドライブシャフト等であってもよい。 The front wheel 2 is supported by a front fork 7. The rear wheel 3 is supported by the rear end of the rear arm 8. A front end portion of the rear arm 8 is supported by a down frame 13 via a pivot shaft 9 so as to be able to swing up and down. The front wheel 2 is a driven wheel. The rear wheels 3 are drive wheels driven by the engine 4. The engine 4 and the rear wheel 3 are connected by a chain 15. The chain 15 is an example of a power transmission member that transmits the power of the engine 4 to the rear wheels 3. The power transmission member is not limited to the chain 15, but may be a transmission belt, a drive shaft, or the like.
　本明細書では、自動二輪車１に跨ったライダーの下半身に接し得る部分を「跨ぎ部」と呼ぶ。跨ぎ部は、シート６や燃料タンク５などを少なくとも部分的に含む。図示している例では、燃料タンク５の側部を覆う左右のタンクサイドカバー１６の少なくとも一部も跨ぎ部に含まれる。また、本明細書では、少なくとも一部がライダーに接するように跨ぎ部に取り付けられるパッド部材を「跨ぎ部パッド」と呼ぶ。 In this specification, a portion that can come into contact with the lower body of a rider straddling the motorcycle 1 is referred to as a "straddle section." The straddle portion at least partially includes the seat 6, the fuel tank 5, and the like. In the illustrated example, at least a portion of the left and right tank side covers 16 that cover the sides of the fuel tank 5 are also included in the straddle portion. Further, in this specification, a pad member that is attached to the straddle portion so that at least a portion thereof contacts the rider is referred to as a “straddle portion pad”.
　図１に示すように、自動二輪車１は、跨ぎ部に取り付けられた跨ぎ部パッド１００を備える。以下、図２Ａおよび図２Ｂも参照しながら、跨ぎ部パッド１００の構成を説明する。図２Ａは、跨ぎ部パッド１００を模式的に示す平面図である。図２Ｂは、跨ぎ部パッド１００を模式的に示す断面図であり、図２Ａ中の２Ｂ－２Ｂ’線に沿った断面を示している。 As shown in FIG. 1, the motorcycle 1 includes a straddle pad 100 attached to the straddle. The configuration of the straddle pad 100 will be described below with reference to FIGS. 2A and 2B. FIG. 2A is a plan view schematically showing the straddle pad 100. FIG. 2B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 2B-2B' in FIG. 2A.
　跨ぎ部パッド１００は、図２Ａおよび図２Ｂに示すように、一対のニーパッド部１１０と、ミドルパッド部１２０とを有する。跨ぎ部パッド１００は、例えば樹脂材料またはゴム材料から形成されている。 The straddle pad 100 has a pair of knee pad sections 110 and a middle pad section 120, as shown in FIGS. 2A and 2B. The straddle pad 100 is made of, for example, a resin material or a rubber material.
　一対のニーパッド部１１０は、ライダーの膝および／または内腿に接する位置に配置されている。一対のニーパッド部１１０の一方（左ニーパッド部）１１０Ｌは、自動二輪車１の左側に位置しており、燃料タンク５の後部左側および左のタンクサイドカバー１６に貼り付けられている。一対のニーパッド部１１０の他方（右ニーパッド部）１１０Ｒは、自動二輪車１の右側に位置しており、燃料タンク５の後部右側および右のタンクサイドカバー１６に貼り付けられている。 The pair of knee pad parts 110 are arranged at positions in contact with the rider's knees and/or inner thighs. One of the pair of kneepad sections 110 (left kneepad section) 110L is located on the left side of the motorcycle 1, and is attached to the rear left side of the fuel tank 5 and the left tank side cover 16. The other (right kneepad section) 110R of the pair of kneepad sections 110 is located on the right side of the motorcycle 1, and is attached to the rear right side of the fuel tank 5 and the right tank side cover 16.
　ミドルパッド部１２０は、一対のニーパッド部１１０の間に位置する。ミドルパッド部１２０は、燃料タンク５の後部中央に貼り付けられている。図示している例では、ミドルパッド部１２０は、左ニーパッド部１１０Ｌと連続しているとともに、右ニーパッド部１１０Ｒとも連続している。つまり、ミドルパッド部１２０および一対のニーパッド部１１０は、一体に形成されている。 The middle pad section 120 is located between the pair of knee pad sections 110. The middle pad portion 120 is attached to the rear center of the fuel tank 5. In the illustrated example, the middle pad section 120 is continuous with the left kneepad section 110L and also continuous with the right kneepad section 110R. That is, the middle pad section 120 and the pair of knee pad sections 110 are integrally formed.
　跨ぎ部パッド１００は、負のポアソン比を有する（つまりオーセチック構造を有する）部分（以下では「第１部分」と呼ぶ）Ｐ１を含む。図示している例では、跨ぎ部パッド１００全体（つまりミドルパッド部１２０全体および各ニーパッド部１１０全体）が負のポアソン比を有する。言い換えると、跨ぎ部パッド１００全体が第１部分Ｐ１である。 The straddle pad 100 includes a portion (hereinafter referred to as a "first portion") P1 that has a negative Poisson's ratio (that is, has an auxetic structure). In the illustrated example, the entire straddle pad 100 (that is, the entire middle pad section 120 and each knee pad section 110) has a negative Poisson's ratio. In other words, the entire straddle pad 100 is the first portion P1.
　ポアソン比は、物体に弾性限界内で荷重を加えたときに、荷重方向に直交する方向に発生するひずみと荷重方向に沿って発生するひずみの比である。 Poisson's ratio is the ratio of the strain that occurs in the direction perpendicular to the load direction and the strain that occurs along the load direction when a load is applied to an object within its elastic limit.
　図３Ａは、正のポアソン比を有する部材ＰＰに圧縮荷重を加えたときの変化を示す図であり、図３Ｂは、負のポアソン比を有する部材ＰＮに圧縮荷重を加えたときの変化を示す図である。 FIG. 3A is a diagram showing changes when a compressive load is applied to a member P P having a positive Poisson's ratio, and FIG. 3B is a diagram showing changes when a compressive load is applied to a member P N having a negative Poisson's ratio. FIG.
　図３Ａに示すように、正のポアソン比を有する部材ＰＰに圧縮荷重を加えると、荷重方向に直交する方向に引張ひずみが生じる。これに対し、図３Ｂに示すように、負のポアソン比を有する部材ＰＮに圧縮荷重を加えると、荷重方向に直交する方向に圧縮ひずみが生じる。そのため、負のポアソン比を有する部分ＰＮは、荷重点を包み込むように変形する。 As shown in FIG. 3A, when a compressive load is applied to a member P P having a positive Poisson's ratio, a tensile strain occurs in a direction perpendicular to the direction of the load. On the other hand, as shown in FIG. 3B, when a compressive load is applied to a member PN having a negative Poisson's ratio, compressive strain occurs in a direction perpendicular to the direction of the load. Therefore, the portion PN having a negative Poisson's ratio deforms so as to wrap around the load point.
　上述したように、本発明の実施形態による自動二輪車１が備える跨ぎ部パッド１００は、負のポアソン比を有する部分（第１部分）Ｐ１を含むので、その部分Ｐ１（図示した例では跨ぎ部パッド１００全体）は、荷重が加えられると荷重点を包み込むように変形する。そのため、ライダーの身体に対するフィット感が向上するので、快適性が向上する。負のポアソン比は、跨ぎ部パッド１００が例えば後述するようなラティス構造を有することにより実現され得る。 As described above, the straddle pad 100 provided in the motorcycle 1 according to the embodiment of the present invention includes the portion (first portion) P1 having a negative Poisson's ratio. 100) deforms when a load is applied so as to wrap around the load point. Therefore, the fit to the rider's body is improved, and comfort is improved. A negative Poisson's ratio can be realized by the straddle pad 100 having, for example, a lattice structure as described below.
　図４Ａに、跨ぎ部パッド１００の他の構成を示す。図４Ａは、跨ぎ部パッド１００を模式的に示す断面図である。 FIG. 4A shows another configuration of the straddle pad 100. FIG. 4A is a cross-sectional view schematically showing the straddle pad 100.
　図４Ａに示す例では、跨ぎ部パッド１００は、第１部分Ｐ１のポアソン比と異なるポアソン比を有する第２部分Ｐ２を含む。図示している例では、一対のニーパッド部１１０のそれぞれに第１部分Ｐ１が含まれ、ミドルパッド部１２０に第２部分Ｐ２が含まれている。 In the example shown in FIG. 4A, the straddle pad 100 includes a second portion P2 having a Poisson's ratio different from the Poisson's ratio of the first portion P1. In the illustrated example, each of the pair of knee pad portions 110 includes a first portion P1, and the middle pad portion 120 includes a second portion P2.
　このように、跨ぎ部パッド１００は、第１部分Ｐ１のポアソン比と異なるポアソン比を有する第２部分Ｐ２を含んでいてもよい。つまり、跨ぎ部パッド１００は、ポアソン比に分布を有していてもよい。跨ぎ部パッド１００がポアソン比に分布を有することにより、跨ぎ部パッド１００に接するライダーの身体部位に応じたフィット感を設定することができ、快適性がいっそう向上する。 In this way, the straddle pad 100 may include the second portion P2 having a Poisson's ratio different from the Poisson's ratio of the first portion P1. In other words, the straddle pad 100 may have a distribution in Poisson's ratio. Since the straddle pad 100 has a distribution in Poisson's ratio, it is possible to set a fit according to the body part of the rider that is in contact with the straddle pad 100, further improving comfort.
　例示したように、負のポアソン比を有する第１部分Ｐ１がニーパッド部１１０に含まれていることにより、ニーパッド部１１０におけるフィット感を高くすることができる。そのため、ニーグリップが弱くても身体をしっかりホールドできので、ニーグリップが容易となり、快適性が向上する。 As illustrated, by including the first portion P1 having a negative Poisson's ratio in the kneepad portion 110, the fit of the kneepad portion 110 can be improved. Therefore, even if the knee grip is weak, the body can be firmly held, making the knee grip easier and improving comfort.
　なお、第２部分Ｐ２のポアソン比は、負であってもよいし、正であってもよい。また、第２部分Ｐ２においてポアソン比は一定でなくても（つまり分布を有しても）よい。 Note that the Poisson's ratio of the second portion P2 may be negative or positive. Further, the Poisson's ratio does not need to be constant (that is, it may have a distribution) in the second portion P2.
　また、第１部分Ｐ１においてポアソン比は一定でなくても（つまり負である限り分布を有していても）よい。図示している例では、各ニーパッド部１１０の全体が第１部分Ｐ１であるが、各ニーパッド部１１０に、第１部分Ｐ１と、正のポアソン比を有する部分とが混在してもよい。 Furthermore, the Poisson's ratio does not need to be constant in the first portion P1 (that is, it may have a distribution as long as it is negative). In the illustrated example, each kneepad portion 110 is entirely the first portion P1, but each kneepad portion 110 may include a mixture of the first portion P1 and a portion having a positive Poisson's ratio.
　図４Ｂおよび図４Ｃに、跨ぎ部パッド１００の他の構成を示す。図４Ｂは、跨ぎ部パッド１００を模式的に示す平面図である。図４Ｃは、跨ぎ部パッド１００を模式的に示す断面図であり、図４Ｂ中の４Ｃ－４Ｃ’線に沿った断面を示している。 Other configurations of the straddle pad 100 are shown in FIGS. 4B and 4C. FIG. 4B is a plan view schematically showing the straddle pad 100. FIG. 4C is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 4C-4C' in FIG. 4B.
　図４Ｂおよび図４Ｃに示す例では、ミドルパッド部１２０は、左ニーパッド部１１０Ｌと連続しておらず、右ニーパッド部１１０Ｒとも連続していない。つまり、左ニーパッド部１１０Ｌは、ミドルパッド部１２０と分離されており、右ニーパッド部１１０Ｒも、ミドルパッド部１２０と分離されている。さらに言い換えると、ミドルパッド部１２０および一対のニーパッド部１１０は、一体に形成されていない。 In the example shown in FIGS. 4B and 4C, the middle pad section 120 is not continuous with the left kneepad section 110L, nor is it continuous with the right kneepad section 110R. That is, the left kneepad section 110L is separated from the middle pad section 120, and the right kneepad section 110R is also separated from the middle pad section 120. In other words, the middle pad section 120 and the pair of knee pad sections 110 are not integrally formed.
　図４Ｂおよび図４Ｃに示す例においても、負のポアソン比を有する第１部分Ｐ１を含んでいるので、快適性を向上させる効果が得られる。 The examples shown in FIGS. 4B and 4C also have the effect of improving comfort because they include the first portion P1 having a negative Poisson's ratio.
　図４Ｂおよび図４Ｃには、ミドルパッド部１２０が一体に形成されている例を示しているが、ミドルパッド部１２０が２つ以上の部分に分割されていても（つまり別体に形成された２つ以上の部材の組み合わせであっても）よい。同様に、左ニーパッド部１１０Ｌおよび右ニーパッド部１１０Ｒのそれぞれも、一体に形成されている例に限定されず、２つ以上の部分に分割されていても（つまり別体に形成された２つ以上の部材の組み合わせであっても）よい。 Although FIGS. 4B and 4C show an example in which the middle pad section 120 is integrally formed, the middle pad section 120 may be divided into two or more parts (that is, formed separately). (It may be a combination of two or more members.) Similarly, the left kneepad portion 110L and the right kneepad portion 110R are not limited to being integrally formed, and may be divided into two or more parts (that is, two or more separately formed parts). ) may also be a combination of members.
　なお、言うまでもないが、跨ぎ部パッド１００、ニーパッド部１１０およびミドルパッド部１２０の平面形状は、図２Ａおよび図４Ｂに例示したものに限定されない。 It goes without saying that the planar shapes of the straddle pad 100, knee pad section 110, and middle pad section 120 are not limited to those illustrated in FIGS. 2A and 4B.
　［ラティス構造］
　跨ぎ部パッド１００は、所望の機能・機械特性を実現するための微細構造を有していてもよい。 [Lattice structure]
The straddle pad 100 may have a microstructure to achieve desired functionality and mechanical properties.
　例えば、跨ぎ部パッド１００は、三次元格子状の複数の単位構造体を含むラティス構造を有していてもよい。ラティス構造の単位構造体の設計を適宜変更することにより、跨ぎ部パッド１００のポアソン比を調整して負のポアソン比を実現することができる。また、跨ぎ部パッド１００の複数の部分において、単位構造体の設計を互いに異ならせることによってポアソン比を互いに異ならせる（つまり跨ぎ部パッド１００にポアソン比の分布を持たせる）ことができる。さらに、跨ぎ部パッド１００がラティス構造を有することにより、通気性が向上し、蒸れを抑制することができる。 For example, the straddle pad 100 may have a lattice structure including a plurality of unit structures in a three-dimensional lattice shape. By appropriately changing the design of the unit structure of the lattice structure, the Poisson's ratio of the straddle pad 100 can be adjusted to realize a negative Poisson's ratio. In addition, in a plurality of portions of the straddle pad 100, by making the designs of the unit structures different from each other, Poisson's ratio can be made to differ from each other (that is, the straddle pad 100 can have a Poisson's ratio distribution). Furthermore, since the straddle pad 100 has a lattice structure, breathability is improved and stuffiness can be suppressed.
　図５Ａおよび図５Ｂに、ラティス構造を有する跨ぎ部パッド１００の例を示す。図５Ａは、跨ぎ部パッド１００の一部を拡大して示す平面図であり、Ｚ方向から見た図である。図５Ｂは、跨ぎ部パッド１００の一部を拡大して示す断面図であり、ＹＺ面に平行な断面を示している。 FIGS. 5A and 5B show an example of a straddle pad 100 having a lattice structure. FIG. 5A is an enlarged plan view of a part of the straddle pad 100, as seen from the Z direction. FIG. 5B is an enlarged cross-sectional view of a part of the straddle pad 100, showing a cross section parallel to the YZ plane.
　図５Ａおよび図５Ｂに示す例では、跨ぎ部パッド１００のラティス構造は、複数の単位構造体Ｕを有する。各単位構造体Ｕは、複数の梁ｂを組み合わせて構成されている。以下では、跨ぎ部パッド１００において複数の単位構造体Ｕが占める部分ＬＰを「格子部」と呼び、格子部ＬＰ以外の空間（格子部ＬＰによって区画される空間）ＳＰを「空隙部」と呼ぶ。図示している例では、格子部ＬＰは、複数の三角錐を（より厳密には三角錐の辺に対応する部分を）組み合わせ、Ｚ方向に延びる辺を省略した形状を有する。 In the example shown in FIGS. 5A and 5B, the lattice structure of the straddle pad 100 has a plurality of unit structures U. Each unit structure U is constructed by combining a plurality of beams b. Hereinafter, the portion LP occupied by the plurality of unit structures U in the straddle pad 100 will be referred to as a "lattice portion", and the space SP other than the lattice portion LP (the space partitioned by the lattice portion LP) will be referred to as a "void portion". . In the illustrated example, the lattice portion LP has a shape in which a plurality of triangular pyramids (more precisely, portions corresponding to the sides of the triangular pyramids) are combined, and the sides extending in the Z direction are omitted.
　跨ぎ部パッド１００がラティス構造を有していると、跨ぎ部パッド１００に荷重が加えられた際に、格子部ＬＰが十分に変形して空隙部ＳＰがつぶれるまでは柔らかく、空隙部ＳＰがつぶれた後はある程度硬くなる挙動を実現することができる。これにより、跨ぎ部パッド１００を軽くホールドしているときや圧迫感を軽減したい部位については跨ぎ部パッド１００を柔らかくして圧迫感を軽減することができる一方で、跨ぎ部パッド１００をしっかりとホールドしているときには跨ぎ部パッド１００を硬くしてグリップ感を向上させる（柔らかすぎることによる頼りなさを感じないようにさせる）ことができる。つまり、圧迫感の軽減とグリップ感の向上を両立することができる。また、跨ぎ部パッド１００がラティス構造を有することにより、通気性が向上し、蒸れを抑制することができる。 If the straddle pad 100 has a lattice structure, when a load is applied to the straddle pad 100, the lattice portion LP will be soft until it is sufficiently deformed and the gap SP will collapse. After that, it is possible to achieve a behavior that becomes stiff to some extent. This makes it possible to soften the straddle pad 100 and reduce the feeling of pressure when the straddle pad 100 is lightly held or in areas where the feeling of pressure should be reduced, while also holding the straddle pad 100 firmly. When the user is using the straddle pad 100, the straddle pad 100 can be made hard to improve the grip feeling (to avoid feeling unreliable due to being too soft). In other words, it is possible to both reduce the feeling of pressure and improve the grip feeling. Furthermore, since the straddle pad 100 has a lattice structure, breathability is improved and stuffiness can be suppressed.
　また、図５Ａおよび図５Ｂに例示したラティス構造は、負のポアソン比を実現することができる。例えば、図６に示すように、図５Ａおよび図５Ｂに例示したラティス構造を有する第１部分Ｐ１に対し、Ｚ方向に平行に圧縮荷重が加えられると、荷重方向に直交する方向、すなわちＸ方向およびＹ方向に圧縮ひずみが生じる。 Further, the lattice structure illustrated in FIGS. 5A and 5B can realize a negative Poisson's ratio. For example, as shown in FIG. 6, when a compressive load is applied in parallel to the Z direction to the first portion P1 having the lattice structure illustrated in FIGS. 5A and 5B, the and compressive strain occurs in the Y direction.
　なお、負のポアソン比を実現するための構造は、図５Ａおよび図５Ｂに例示した構造に限定されず、公知の種々のオーセチック構造を用いることができる。 Note that the structure for realizing a negative Poisson's ratio is not limited to the structures illustrated in FIGS. 5A and 5B, and various known auxetic structures can be used.
　負のポアソン比の具体的な値に、特に制限はない。等方弾性体（等方性材料）の場合、負のポアソン比の理論的な下限値は－１であるが、異方弾性体（異方性材料）の場合には、負のポアソン比に理論的な下限値は存在しない（－１以下の値を取り得る）。図５Ａおよび図５Ｂに例示したようなラティス構造を有する部分は、異方弾性体と見なせるので、種々の値のポアソン比を実現し得る。 There is no particular restriction on the specific value of the negative Poisson's ratio. In the case of an isotropic elastic body (isotropic material), the theoretical lower limit of negative Poisson's ratio is -1, but in the case of anisotropic elastic body (anisotropic material), the theoretical lower limit of negative Poisson's ratio is -1. There is no theoretical lower limit (values below -1 are possible). A portion having a lattice structure as illustrated in FIGS. 5A and 5B can be regarded as an anisotropic elastic body, and thus various values of Poisson's ratio can be realized.
　また、既に説明したように、跨ぎ部パッド１００の第１部分Ｐ１以外の部分（例えば上述した第２部分Ｐ２）は、正のポアソン比を有していてもよく、そのような部分は、正のポアソン比が実現されるラティス構造を有していてもよい。 Further, as already explained, a portion of the straddle pad 100 other than the first portion P1 (for example, the second portion P2 described above) may have a positive Poisson's ratio, and such a portion may have a positive Poisson's ratio. It may have a lattice structure that achieves Poisson's ratio.
　図７Ａおよび図７Ｂに、正のポアソン比を有するラティス構造の例を示す。図７Ａは、正のポアソンを有する第２部分Ｐ２の一部を拡大して示す平面図であり、Ｚ方向から見た図である。図７Ｂは、第２部分Ｐ２の一部を拡大して示す断面図であり、ＹＺ面に平行な断面を示している。 An example of a lattice structure having a positive Poisson's ratio is shown in FIGS. 7A and 7B. FIG. 7A is an enlarged plan view of a part of the second portion P2 having a positive Poisson, as seen from the Z direction. FIG. 7B is an enlarged cross-sectional view of a part of the second portion P2, showing a cross section parallel to the YZ plane.
　図７Ａおよび図７Ｂに示す例では、ラティス構造の単位構造体Ｕは、立方体（より厳密には立方体の辺に対応する部分）状であり、格子部ＬＰは、複数の立方体を連続的に配置した形状を有する。図７Ａおよび図７Ｂに例示しているような、正のポアソン比を有するラティス構造を採用した場合でも、圧迫感の軽減とグリップ感の向上の両立や、蒸れの抑制を図ることができる。 In the example shown in FIGS. 7A and 7B, the unit structure U of the lattice structure is in the shape of a cube (more precisely, a portion corresponding to the sides of the cube), and the lattice portion LP has a plurality of cubes arranged continuously. It has a shape. Even when a lattice structure having a positive Poisson's ratio as illustrated in FIGS. 7A and 7B is employed, it is possible to reduce the feeling of pressure, improve the grip feeling, and suppress stuffiness.
　なお、正のポアソンを実現するラティス構造は、図７Ａおよび図７Ｂに例示した構造に限定されず、公知の種々のラティス構造（３次元メッシュ構造）を用いることができる。 Note that the lattice structure that realizes positive Poisson is not limited to the structures illustrated in FIGS. 7A and 7B, and various known lattice structures (three-dimensional mesh structures) can be used.
　また、跨ぎ部パッド１００がラティス構造を有する場合、厚さ方向に沿ってほぼ空隙部ＳＰのみが存在する領域もあり得るが、跨ぎ部パッド１００の厚さは、格子部ＬＰおよび空隙部ＳＰの両方を含んで規定される、跨ぎ部パッド１００の外縁（輪郭）で定義される。 Further, when the straddle pad 100 has a lattice structure, there may be a region where only the voids SP exist along the thickness direction, but the thickness of the straddle pad 100 is determined by the lattice portion LP and the void SP. It is defined by the outer edge (outline) of the straddle pad 100 that includes both.
　なお、ラティス構造の単位構造体Ｕは、そのサイズや形状、配置等が必ずしも厳密に規則的である必要はなく、所望の機能や機械特性が実現される限りにおいて多少の不規則は許容され得る。 Note that the size, shape, arrangement, etc. of the unit structure U of the lattice structure do not necessarily have to be strictly regular, and some irregularity may be tolerated as long as the desired function and mechanical properties are achieved. .
　［硬さ分布］
　図８を参照しながら、跨ぎ部パッド１００のさらに他の構成を説明する。図８は、跨ぎ部パッド１００を模式的に示す断面図である。 [Hardness distribution]
Still another configuration of the straddle pad 100 will be described with reference to FIG. 8. FIG. 8 is a cross-sectional view schematically showing the straddle pad 100.
　図８に示す例では、跨ぎ部パッド１００は、互いに硬さが異なる２種類の部分Ｐ３およびＰ４を含んでいる。以下では、相対的に硬い部分Ｐ３を「第３部分」と呼び、相対的に柔らかい部分Ｐ４を「第４部分」と呼ぶ。跨ぎ部パッド１００が、互いに硬さが異なる第３部分Ｐ３および第４部分Ｐ４を含んでいることにより、言い換えると、跨ぎ部パッド１００が硬さ分布を有していることにより、跨ぎ部パッド１００に接する身体部位に応じた硬さを設定することができ、快適性が向上する。 In the example shown in FIG. 8, the straddle pad 100 includes two types of portions P3 and P4 that have different hardnesses. Hereinafter, the relatively hard part P3 will be referred to as the "third part" and the relatively soft part P4 will be referred to as the "fourth part". Because the straddle pad 100 includes the third portion P3 and the fourth portion P4 having different hardnesses, in other words, because the straddle pad 100 has a hardness distribution, the straddle pad 100 The firmness can be set according to the part of the body that comes into contact with it, improving comfort.
　図８に示す例では、相対的に硬い第３部分Ｐ３がニーパッド部１１０に含まれ、相対的に柔らかい第４部分Ｐ４がミドルパッド部１２０に含まれている。これにより、ニーグリップ時に身体をしっかり支持したい部位であるニーパッド部１１０を硬くするとともに、体圧を分散して圧迫感を軽減したい部位であるミドルパッド部１２０を柔らかくすることができる。 In the example shown in FIG. 8, the relatively hard third portion P3 is included in the knee pad portion 110, and the relatively soft fourth portion P4 is included in the middle pad portion 120. This makes it possible to harden the knee pad section 110, which is the part where the user wants to firmly support the body during knee grip, and soften the middle pad part 120, which is the part where it is desired to disperse body pressure and reduce the feeling of pressure.
　なお、図８に例示しているように左ニーパッド部１１０Ｌ全体において硬さが実質的に同じ（つまり左ニーパッド部１１０Ｌ全体が第３部分Ｐ３）であってもよいし、そうでなくてもよい。つまり、左ニーパッド部１１０Ｌは、第３部分Ｐ３と硬さが異なる部分を有していてもよい。同様に、右ニーパッド部１１０Ｒ全体において硬さが実質的に同じ（つまり右ニーパッド部１１０Ｒ全体が第３部分Ｐ３）であってもよいし、そうでなくてもよい。つまり、右ニーパッド部１１０Ｒは、第３部分Ｐ３と硬さが異なる部分を有していてもよい。また、ミドルパッド部１２０全体において硬さが実質的に同じ（つまりミドルパッド部１２０全体が第４部分Ｐ４）であってもよいし、そうでなくてもよい。つまり、ミドルパッド部１２０は、第４部分Ｐ４と硬さが異なる部分を有していてもよい。 Note that, as illustrated in FIG. 8, the entire left knee pad portion 110L may have substantially the same hardness (that is, the entire left knee pad portion 110L is the third portion P3), or may not. . That is, the left kneepad portion 110L may have a portion having a different hardness from the third portion P3. Similarly, the entire right knee pad portion 110R may or may not have substantially the same hardness (that is, the entire right knee pad portion 110R is the third portion P3). In other words, the right kneepad portion 110R may have a portion having a different hardness from the third portion P3. Moreover, the hardness may or may not be substantially the same in the entire middle pad portion 120 (that is, the entire middle pad portion 120 is the fourth portion P4). That is, the middle pad portion 120 may have a portion having a different hardness from the fourth portion P4.
　なお、跨ぎ部パッド１００の一部または全体において、硬さが連続的に変化してもよい。また、第３部分Ｐ３と第４部分Ｐ４との間に、第３部分Ｐ３よりも柔らかく、かつ、第４部分Ｐ４よりも硬い部分（中間硬さ部分）が配置されてもよい。例えば、ニーパッド部１１０の中央部を第３部分Ｐ３、ミドルパッド部１２０の中央部を第４部分Ｐ４とし、それ以外の部分を中間硬さ部分としてもよい。 Note that the hardness of a part or the entire straddle pad 100 may change continuously. Further, a portion (intermediate hardness portion) that is softer than the third portion P3 and harder than the fourth portion P4 may be arranged between the third portion P3 and the fourth portion P4. For example, the central portion of the knee pad portion 110 may be the third portion P3, the central portion of the middle pad portion 120 may be the fourth portion P4, and the other portions may be intermediate hardness portions.
　跨ぎ部パッド１００の硬さ（第３部分Ｐ３および第４部分Ｐ４の硬さ）は、例えば、ＪＡＳＯ（日本自動車技術会規格）　Ｂ４０８－８９に準拠した荷重試験を行うことによって得られた荷重変位曲線を用いて評価することができる。具体的には、そのようにして得られた荷重変位曲線において、所定の変位量における荷重を「硬さ」と見なすことができる。 The hardness of the straddle pad 100 (the hardness of the third portion P3 and the fourth portion P4) is determined by the load displacement obtained by conducting a load test in accordance with JASO (Japan Automobile Engineers Society Standard) B408-89, for example. It can be evaluated using a curve. Specifically, in the load displacement curve obtained in this way, the load at a predetermined amount of displacement can be regarded as "hardness".
　ここで、ニーパッド部１１０およびミドルパッド部１２０のそれぞれについて、硬さが異なる複数のサンプルを作製し、自動二輪車に取り付けて実走評価を行った結果を説明する。実走評価の結果、２つの組み合わせＡ、Ｂについて、乗車感の向上が感じられた。以下では、組み合わせＡを構成するサンプルをニーパッド部サンプル＃１およびミドルパッド部サンプル＃３と呼ぶ。また、組み合わせＢを構成するサンプルをニーパッド部サンプル＃２およびミドルパッド部サンプル＃４と呼ぶ。 Here, for each of the knee pad portion 110 and the middle pad portion 120, a plurality of samples with different hardnesses were prepared, and the results were obtained by attaching them to a motorcycle and conducting an actual running evaluation. As a result of the actual driving evaluation, it was felt that the ride feeling was improved for the two combinations A and B. Hereinafter, the samples forming combination A will be referred to as knee pad part sample #1 and middle pad part sample #3. Further, the samples forming combination B are referred to as knee pad part sample #2 and middle pad part sample #4.
　ニーパッド部サンプル＃１、＃２およびミドルパッド部サンプル＃３、＃４について、上述した荷重試験により得られた荷重変位曲線を図９Ａおよび図９Ｂに示す。 FIGS. 9A and 9B show load displacement curves obtained by the above-described load test for knee pad samples #1 and #2 and middle pad samples #3 and #4.
　組み合わせＡについて、変位量１．０ｍｍにおける荷重を硬さとすると、図９Ａに示すように、ニーパッド部サンプル＃１の硬さはミドルパッド部サンプル＃３の硬さの約３．１倍であった。また、変位量６．０ｍｍにおける荷重を硬さとすると、図９Ｂに示すように、ニーパッド部サンプル＃１の硬さはミドルパッド部サンプル＃３の硬さの約１．３倍であった。 For combination A, if the load at a displacement of 1.0 mm is defined as hardness, the hardness of knee pad sample #1 was approximately 3.1 times that of middle pad sample #3, as shown in FIG. 9A. . Further, if the load at a displacement of 6.0 mm is defined as hardness, as shown in FIG. 9B, the hardness of knee pad sample #1 was about 1.3 times that of middle pad sample #3.
　組み合わせＢについて、変位量１．０ｍｍにおける荷重を硬さとすると、図９Ａに示すように、ニーパッド部サンプル＃２の硬さはミドルパッド部サンプル＃４の硬さの約７．１倍であった。また、変位量４．０ｍｍにおける荷重を硬さとすると、図９Ａに示すように、ニーパッド部サンプル＃２の硬さはミドルパッド部サンプル＃４の硬さの約１５倍であった。 Regarding combination B, if the load at a displacement of 1.0 mm is defined as hardness, as shown in FIG. 9A, the hardness of knee pad sample #2 was approximately 7.1 times that of middle pad sample #4. . Furthermore, when the load at a displacement of 4.0 mm is defined as hardness, as shown in FIG. 9A, the hardness of knee pad part sample #2 was about 15 times that of middle pad part sample #4.
　上述した結果からは、荷重が５０Ｎ以下の範囲において、ニーパッド部１１０に含まれる第３部分Ｐ３の硬さは、ミドルパッド部１２０に含まれる第４部分Ｐ４の硬さの１．２倍以上であることが好ましいと言える。 From the above results, in a load range of 50 N or less, the hardness of the third portion P3 included in the knee pad portion 110 is 1.2 times or more than the hardness of the fourth portion P4 included in the middle pad portion 120. It can be said that it is preferable.
　［厚さ分布］
　図１０Ａおよび図１０Ｂを参照しながら、跨ぎ部パッド１００のさらに他の構成を説明する。図１０Ａは、跨ぎ部パッド１００を模式的に示す平面図である。図１０Ｂは、跨ぎ部パッド１００を模式的に示す断面図であり、図１０Ａ中の１０Ｂ－１０Ｂ’線に沿った断面を示している。 [Thickness distribution]
Still another configuration of the straddle pad 100 will be described with reference to FIGS. 10A and 10B. FIG. 10A is a plan view schematically showing the straddle pad 100. FIG. 10B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 10B-10B' in FIG. 10A.
　図１０Ａおよび図１０Ｂに示す跨ぎ部パッド１００では、ミドルパッド部１２０の最大厚さは、各ニーパッド部１１０の最小厚さよりも大きく、かつ、各ニーパッド部１１０の最大厚さ以上である。 In the straddle pad 100 shown in FIGS. 10A and 10B, the maximum thickness of the middle pad section 120 is greater than the minimum thickness of each knee pad section 110 and greater than or equal to the maximum thickness of each knee pad section 110.
　図１０Ｂに示す例では、ミドルパッド部１２０の厚さｔ３は、ミドルパッド部１２０全体で一定（実質的に同じ）である。 In the example shown in FIG. 10B, the thickness t3 of the middle pad section 120 is constant (substantially the same) throughout the middle pad section 120.
　また、図１０Ｂに示す例では、左ニーパッド部１１０Ｌは、その厚さｔ１に着目すると、２つの領域１１０Ｌａおよび１１０Ｌｂ（それぞれ「第１の領域」、「第２の領域」と呼ぶ）に区分される。第１の領域１１０Ｌａでは、左ニーパッド部１１０Ｌの厚さｔ１は実質的に同じである。第２の領域１１０Ｌｂは、第１の領域１１０Ｌａとミドルパッド部１２０との間に位置している。第２の領域１１０Ｌｂでは、左ニーパッド部１１０Ｌの厚さｔ１は、ミドルパッド部１２０側から第１の領域１１０Ｌａ側に向かうにつれて減少する。 Furthermore, in the example shown in FIG. 10B, the left kneepad portion 110L is divided into two regions 110La and 110Lb (referred to as a "first region" and a "second region", respectively) when paying attention to its thickness t1. Ru. In the first region 110La, the thickness t1 of the left kneepad portion 110L is substantially the same. The second region 110Lb is located between the first region 110La and the middle pad portion 120. In the second region 110Lb, the thickness t1 of the left knee pad portion 110L decreases from the middle pad portion 120 side toward the first region 110La side.
　同様に、右ニーパッド部１１０Ｒは、その厚さｔ２に着目すると、２つの領域１１０Ｒａおよび１１０Ｒｂ（それぞれ「第３の領域」、「第４の領域」と呼ぶ）に区分される。第３の領域１１０Ｒａでは、右ニーパッド部１１０Ｒの厚さｔ２は実質的に同じである。第４の領域１１０Ｒｂは、第３の領域１１０Ｒａとミドルパッド部１２０との間に位置している。第４の領域１１０Ｒｂでは、右ニーパッド部１１０Ｌの厚さｔ２は、ミドルパッド部１２０側から第３の領域１１０Ｒａ側に向かうにつれて減少する。左ニーパッド部１１０Ｌの第１の領域１１０Ｌａにおける厚さｔ１と、右ニーパッド部１１０Ｒの第３の領域１１０Ｒａにおける厚さｔ２とは、例えば実質的に同じであるが、これに限定されない。 Similarly, when focusing on the thickness t2, the right kneepad portion 110R is divided into two regions 110Ra and 110Rb (referred to as a "third region" and a "fourth region", respectively). In the third region 110Ra, the thickness t2 of the right kneepad portion 110R is substantially the same. The fourth region 110Rb is located between the third region 110Ra and the middle pad portion 120. In the fourth region 110Rb, the thickness t2 of the right knee pad portion 110L decreases from the middle pad portion 120 side toward the third region 110Ra side. The thickness t1 in the first region 110La of the left kneepad portion 110L and the thickness t2 in the third region 110Ra of the right kneepad portion 110R are, for example, substantially the same, but are not limited thereto.
　上述したように、図１０Ａおよび図１０Ｂに示す跨ぎ部パッド１００では、ミドルパッド部１２０の最大厚さは、各ニーパッド部１１０の最小厚さよりも大きく、かつ、各ニーパッド部１１０の最大厚さ以上である。つまり、跨ぎ部パッド１００は、厚さ分布を有している。跨ぎ部パッド１００が厚さ分布を有することにより、跨ぎ部パッド１００に接するライダーの身体部位に応じた適切な体圧分散を図ることができ、快適性が向上する。ミドルパッド部１２０の最大厚さが各ニーパッド部１１０の最小厚さよりも大きく、かつ、各ニーパッド部１１０の最大厚さ以上であることにより、ミドルパッド部１２０におけるフィット感および振動低減性を高めつつ、ニーパッド部１１０における下半身の保持（ニーグリップ）を好適に行うことができる。 As described above, in the straddle pad 100 shown in FIGS. 10A and 10B, the maximum thickness of the middle pad section 120 is greater than the minimum thickness of each knee pad section 110 and greater than or equal to the maximum thickness of each knee pad section 110. It is. In other words, the straddle pad 100 has a thickness distribution. Since the straddle pad 100 has a thickness distribution, it is possible to appropriately distribute the body pressure according to the part of the rider's body that is in contact with the straddle pad 100, thereby improving comfort. By making the maximum thickness of the middle pad section 120 larger than the minimum thickness of each knee pad section 110 and greater than or equal to the maximum thickness of each knee pad section 110, it is possible to improve the fit and vibration reduction properties of the middle pad section 120. , it is possible to suitably hold the lower body (knee grip) in the knee pad portion 110.
　ミドルパッド部１２０におけるフィット感および振動低減性を高める観点からは、ミドルパッド部１２０の最大厚さは、後に例示するように、各ニーパッド部１１０の最大厚さよりも大きいことが好ましい。 From the viewpoint of improving the fit and vibration reduction properties of the middle pad section 120, the maximum thickness of the middle pad section 120 is preferably larger than the maximum thickness of each knee pad section 110, as will be exemplified later.
　ミドルパッド部１２０の最大厚さは、特に限定されない。同様に、一対のニーパッド部１１０のそれぞれの最大厚さは、特に限定されない。 The maximum thickness of the middle pad portion 120 is not particularly limited. Similarly, the maximum thickness of each of the pair of kneepad sections 110 is not particularly limited.
　ミドルパッド部１２０におけるフィット感および振動低減性を高める観点からは、ミドルパッド部１２０の最大厚さは、ニーパッド部１１０の最小厚さの１５０％以上であることが好ましく、２００％以上であることがより好ましい。 From the viewpoint of improving the fit and vibration reduction properties of the middle pad section 120, the maximum thickness of the middle pad section 120 is preferably 150% or more, and preferably 200% or more, of the minimum thickness of the knee pad section 110. is more preferable.
　ミドルパッド部１２０におけるフィット感および振動低減性を高める観点からは、ミドルパッド部１２０の最大厚さは、ニーパッド部１１０の最大厚さの１５０％以上であることが好ましく、２００％以上であることがより好ましい。 From the perspective of improving the fit and vibration reduction properties of the middle pad section 120, the maximum thickness of the middle pad section 120 is preferably 150% or more, and preferably 200% or more, of the maximum thickness of the knee pad section 110. is more preferable.
　また、跨ぎ部パッド１００が、例えば前述したようなラティス構造を有することにより、跨ぎ部パッド１００に荷重が加えられた際に、最初は柔らかく、ある程度押しつぶされると硬くなるような挙動を実現することができる。このような二段階挙動を実現する観点からは、ミドルパッド部１２０の最大厚さが１０ｍｍ以上であることが好ましく、２０ｍｍ以上であることがより好ましい。 In addition, by having the straddle pad 100 have a lattice structure as described above, for example, when a load is applied to the straddle pad 100, the behavior is soft at first and becomes hard after being crushed to a certain extent. I can do it. From the viewpoint of realizing such two-step behavior, the maximum thickness of the middle pad portion 120 is preferably 10 mm or more, and more preferably 20 mm or more.
　ニーパッド部１１０は、低反発性であっても、つまり、加えられている荷重が除かれた際に元の形状に戻る速度（復元速度）が比較的遅くてもよい。ニーパッド部１１０が低反発性であると、ニーグリップを解除して脚を下げる際にニーパッド部１１０が邪魔になりにくいので、脚下げをいっそう容易に行うことができる。 The kneepad portion 110 may have low resilience, that is, the speed at which it returns to its original shape (restoration speed) when the applied load is removed may be relatively slow. When the knee pad section 110 has low resilience, the knee pad section 110 is less likely to get in the way when the knee grip is released and the leg is lowered, so that the leg can be lowered more easily.
　図１１Ａおよび図１１Ｂに、厚さ分布を有する跨ぎ部パッド１００の他の構成を示す。図１１Ａは、跨ぎ部パッド１００を模式的に示す平面図である。図１１Ｂは、跨ぎ部パッド１００を模式的に示す断面図であり、図１１Ａ中の１１Ｂ－１１Ｂ’線に沿った断面を示している。 FIGS. 11A and 11B show other configurations of the straddle pad 100 having a thickness distribution. FIG. 11A is a plan view schematically showing the straddle pad 100. FIG. 11B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 11B-11B' in FIG. 11A.
　図１１Ａおよび図１１Ｂに示す例では、ミドルパッド部１２０の厚さｔ３は、ミドルパッド部１２０全体において一定（実質的に同じ）である。また、左ニーパッド部１１０Ｌの厚さｔ１は、左ニーパッド部１１０Ｌ全体において一定ではなく、ミドルパッド部１２０から離れるにつれて減少する。同様に、右ニーパッド部１１０Ｒの厚さｔ２は、右ニーパッド部１１０Ｒ全体において一定ではなく、ミドルパッド部１２０から離れるにつれて減少する。 In the example shown in FIGS. 11A and 11B, the thickness t3 of the middle pad section 120 is constant (substantially the same) throughout the middle pad section 120. Further, the thickness t1 of the left kneepad portion 110L is not constant over the entire left kneepad portion 110L, but decreases as the distance from the middle pad portion 120 increases. Similarly, the thickness t2 of the right knee pad portion 110R is not constant over the entire right knee pad portion 110R, but decreases as the distance from the middle pad portion 120 increases.
　図１１Ａおよび図１１Ｂに例示した構成においても、跨ぎ部パッド１００が厚さ分布を有することにより、快適性を向上させる効果が得られる。 Even in the configuration illustrated in FIGS. 11A and 11B, the effect of improving comfort can be obtained because the straddle pad 100 has a thickness distribution.
　図１２Ａおよび図１２Ｂに、厚さ分布を有する跨ぎ部パッド１００のさらに他の構成を示す。図１２Ａは、跨ぎ部パッド１００を模式的に示す平面図である。図１２Ｂは、跨ぎ部パッド１００を模式的に示す断面図であり、図１２Ａ中の１２Ｂ－１２Ｂ’線に沿った断面を示している。 FIGS. 12A and 12B show still another configuration of the straddle pad 100 having a thickness distribution. FIG. 12A is a plan view schematically showing the straddle pad 100. FIG. 12B is a cross-sectional view schematically showing the straddle pad 100, and shows a cross section taken along line 12B-12B' in FIG. 12A.
　図１２Ａおよび図１２Ｂに示す例では、ミドルパッド部１２０は、左ニーパッド部１１０Ｌと連続しておらず、右ニーパッド部１１０Ｒとも連続していない。つまり、左ニーパッド部１１０Ｌは、ミドルパッド部１２０と分離されており、右ニーパッド部１１０Ｒも、ミドルパッド部１２０と分離されている。さらに言い換えると、ミドルパッド部１２０および一対のニーパッド部１１０は、一体に形成されていない。 In the example shown in FIGS. 12A and 12B, the middle pad section 120 is not continuous with the left kneepad section 110L, nor is it continuous with the right kneepad section 110R. That is, the left kneepad section 110L is separated from the middle pad section 120, and the right kneepad section 110R is also separated from the middle pad section 120. In other words, the middle pad section 120 and the pair of knee pad sections 110 are not integrally formed.
　また、図１２Ａおよび図１２Ｂに示す例では、左ニーパッド部１１０Ｌの厚さｔ１は、左ニーパッド部１１０Ｌ全体で一定（実質的に同じ）であり、右ニーパッド部１１０Ｒの厚さｔ２は、右ニーパッド部１１０Ｒ全体で一定（実質的に同じ）である。また、ミドルパッド部１２０の厚さｔ３は、ミドルパッド部１２０全体で一定（実質的に同じ）である。 In the example shown in FIGS. 12A and 12B, the thickness t1 of the left kneepad portion 110L is constant (substantially the same) throughout the left kneepad portion 110L, and the thickness t2 of the right kneepad portion 110R is It is constant (substantially the same) throughout the portion 110R. Further, the thickness t3 of the middle pad section 120 is constant (substantially the same) throughout the middle pad section 120.
　図１２Ａおよび図１２Ｂに例示した構成においても、跨ぎ部パッド１００が厚さ分布を有する（より具体的にはミドルパッド部１２０の最大厚さが、各ニーパッド部１１０の最大厚さよりも大きい）ことにより、快適性を向上させる効果が得られる。 Also in the configuration illustrated in FIGS. 12A and 12B, the straddle pad 100 has a thickness distribution (more specifically, the maximum thickness of the middle pad section 120 is larger than the maximum thickness of each knee pad section 110). This has the effect of improving comfort.
　なお、跨ぎ部パッド１００の厚さ分布は、図１０Ｂ、図１１Ｂおよび図１２Ｂに例示したものに限定されない。 Note that the thickness distribution of the straddle pad 100 is not limited to that illustrated in FIGS. 10B, 11B, and 12B.
　例えば、図１０Ｂに示した構成は、図１３Ａに示すように改変されてもよい。図１３Ａに示す構成では、ミドルパッド部１２０における厚さｔ３が一定ではない。ミドルパッド部１２０は、厚さｔ３が最大である第５の領域１２０ａと、ミドルパッド部１２０の左右方向（Ｙ方向に平行な方向）における中央に位置して厚さｔ３が最大厚さよりも小さい第６の領域１２０ｂとを有する。また、第５の領域１２０ａと第６の領域１２０ｂとの間には、第７の領域１２０ｃが位置しており、第７の領域１２０ｃでは、厚さｔ３は、第６の領域１２０ｂ側から第５の領域１２０ａ側に向かうにつれて増加する。 For example, the configuration shown in FIG. 10B may be modified as shown in FIG. 13A. In the configuration shown in FIG. 13A, the thickness t3 of the middle pad portion 120 is not constant. The middle pad section 120 is located between the fifth region 120a where the thickness t3 is the maximum and the center of the middle pad section 120 in the left-right direction (direction parallel to the Y direction), and the thickness t3 is smaller than the maximum thickness. and a sixth region 120b. Further, a seventh region 120c is located between the fifth region 120a and the sixth region 120b, and in the seventh region 120c, the thickness t3 is the same as the thickness t3 from the sixth region 120b side. 5 toward the region 120a side.
　また、図１０Ｂに示した構成は、図１３Ｂに示すように改変されてもよい。図１３Ｂに示す構成では、左ニーパッド部１１０Ｌの厚さｔ１は、左ニーパッド部１１０Ｌ全体で一定（実質的に同じ）であり、右ニーパッド部１１０Ｒの厚さｔ２は、右ニーパッド部１１０Ｒ全体で一定（実質的に同じ）である。左ニーパッド部１１０Ｌとミドルパッド部１２０との境界において厚さはステップ状に変化しており、右ニーパッド部１１０Ｒとミドルパッド部１２０との境界において厚さはステップ状に変化している。 Furthermore, the configuration shown in FIG. 10B may be modified as shown in FIG. 13B. In the configuration shown in FIG. 13B, the thickness t1 of the left kneepad portion 110L is constant (substantially the same) over the entire left kneepad portion 110L, and the thickness t2 of the right kneepad portion 110R is constant over the entire right kneepad portion 110R. (substantially the same). The thickness changes stepwise at the boundary between the left kneepad section 110L and the middle pad section 120, and the thickness changes stepwise at the boundary between the right kneepad section 110R and the middle pad section 120.
　また、ミドルパッド部１２０が、上下方向（跨ぎ部パッド１００が跨ぎ部に取り付けられた状態での上下方向）に厚さ分布を有していてもよい。このようなミドルパッド部１２０の例を図１３Ｃに示す。図１３Ｃは、跨ぎ部パッド１００を模式的に示す断面図であり、図１０Ａ中の１３Ｃ－１３Ｃ’に沿った断面に相当する。 Furthermore, the middle pad portion 120 may have a thickness distribution in the vertical direction (the vertical direction when the straddling portion pad 100 is attached to the straddling portion). An example of such a middle pad section 120 is shown in FIG. 13C. FIG. 13C is a cross-sectional view schematically showing the straddle pad 100, and corresponds to a cross section taken along line 13C-13C' in FIG. 10A.
　図１３Ｃに示す例では、ミドルパッド部１２０は、上下方向に沿って隣接する２つの領域１２０ｕおよび１２０ｌを含む。２つの領域１２０ｕのうちの相対的に上方に位置する一方の領域（上領域）１２０ｕは、他方の領域（下領域）１２０ｌよりも薄い部分を含んでいる。より具体的には、上領域１２０ｕは、下領域１２０ｌから離れるにつれて薄くなる。ミドルパッド部１２０がこのような厚さ分布を上下方向に有していることにより、燃料タンク５と跨ぎ部パッド１００との段差を小さくして一体感を向上させ得る。 In the example shown in FIG. 13C, the middle pad section 120 includes two regions 120u and 120l that are adjacent to each other along the vertical direction. One region (upper region) 120u located relatively above of the two regions 120u includes a thinner portion than the other region (lower region) 120l. More specifically, the upper region 120u becomes thinner as it moves away from the lower region 120l. Since the middle pad portion 120 has such a thickness distribution in the vertical direction, the difference in level between the fuel tank 5 and the straddle pad 100 can be reduced and a sense of unity can be improved.
　また、ミドルパッド部１２０は、上下に分割されていてもよい。例えば、上述した上領域１２０ｕと下領域１２０ｌとが一体ではなく分離されていてもよい。 Additionally, the middle pad portion 120 may be divided into an upper and a lower portion. For example, the above-described upper region 120u and lower region 120l may not be integrated but may be separated.
　図１０Ｂ、図１１Ｂ、図１３Ａおよび図１３Ｂに例示したような、ミドルパッド部１２０および一対のニーパッド部１１０が一体に形成されている構成においては、跨ぎ部パッド１００の左右方向における中央から側方に向かう場合の厚さ変化を考えたときに厚さが減少し始める部分が、ミドルパッド部１２０と各ニーパッド部１１０との境界と規定され得る。 In the configuration in which the middle pad portion 120 and the pair of knee pad portions 110 are integrally formed as illustrated in FIGS. 10B, 11B, 13A, and 13B, the straddle pad 100 is The portion where the thickness begins to decrease when considering the change in thickness toward the middle pad portion 120 and each knee pad portion 110 may be defined as the boundary between the middle pad portion 120 and each knee pad portion 110.
　なお、上述したように跨ぎ部パッド１００が厚さ分布を有する構成は、跨ぎ部パッド１００が硬さ分布を有する構成と組み合わせ得る。 Note that the configuration in which the straddle pad 100 has a thickness distribution as described above can be combined with the configuration in which the straddle pad 100 has a hardness distribution.
　［跨ぎ部パッドの製造方法］
　跨ぎ部パッド１００は、例えば、付加製造技術（additive manufacturing）を用いて好適に形成することができる。付加製造技術は、３Ｄプリンタを用いて立体構造物（三次元のオブジェクト）を形成する技術である。付加製造技術によれば、３ＤＣＡＤデータや３ＤＣＧデータに基づいて、複雑な形状を有する立体構造物であっても簡便に製造することができる。 [Method of manufacturing straddle pad]
Straddle pad 100 can be suitably formed using, for example, additive manufacturing techniques. Additive manufacturing technology is a technology that forms three-dimensional structures (three-dimensional objects) using a 3D printer. According to additive manufacturing technology, even a three-dimensional structure having a complicated shape can be easily manufactured based on 3D CAD data or 3DCG data.
　跨ぎ部パッド１００の材料としては、例えば、樹脂材料（エラストマー、ゲルを含む）またはゴム材料を好適に用いることができる。樹脂材料およびゴム材料としては、公知の種々の樹脂材料、ゴム材料を用いることができる。 As the material of the straddle pad 100, for example, a resin material (including elastomer and gel) or a rubber material can be suitably used. As the resin material and rubber material, various known resin materials and rubber materials can be used.
　３Ｄプリンタとしては、例えば、Ｓｔｒａｔａｓｙｓ社により提案されているＰｏｌｙＪｅｔ方式の３Ｄプリンタを用いることができる。ＰｏｌｙＪｅｔ方式では、インクジェットヘッドのノズルからの、紫外線硬化型材料を含む液体微粒子の噴射と、紫外線照射による硬化とを交互に繰り返し行うことによって、造形が行われる。勿論、ＰｏｌｙＪｅｔ方式以外の３Ｄプリンタを用いてもよい。 As the 3D printer, for example, a PolyJet 3D printer proposed by Stratasys can be used. In the PolyJet method, modeling is performed by alternately repeating jetting of liquid particles containing an ultraviolet curable material from a nozzle of an inkjet head and curing by ultraviolet irradiation. Of course, a 3D printer other than the PolyJet method may be used.
　付加製造技術を用いると、既に説明したようなラティス構造を有する跨ぎ部パッド１００を好適に形成することができる。付加製造技術を用いてラティス構造を有する跨ぎ部パッド１００を形成する場合、部位ごとに、単位構造体Ｕの設計を異ならせることができる。単位構造体Ｕの設計を部位ごとに異ならせることにより、部位ごとにポアソン比を異ならせたり、部位ごとに硬さを異ならせたりすることができるので、ラティス構造を有する跨ぎ部パッド１００では、跨ぎ部パッド１００にポアソン比分布を持たせたり、硬さ分布を持たせたりすることが容易となる。 By using additive manufacturing technology, it is possible to suitably form the straddle pad 100 having the lattice structure as described above. When forming the straddle pad 100 having a lattice structure using additive manufacturing technology, the design of the unit structure U can be different for each part. By making the design of the unit structure U different for each part, Poisson's ratio can be made different for each part, and the hardness can be made different for each part. Therefore, in the straddle pad 100 having a lattice structure, It becomes easy to give the straddle pad 100 a Poisson's ratio distribution or a hardness distribution.
　これまでの説明では、跨ぎ部パッド１００が一対のニーパッド部１１０と、ミドルパッド部１２０とを含む構成を例示したが、跨ぎ部パッド１００はこのような構成に限定されない。跨ぎ部パッド１００は、ミドルパッド部１２０のみを含んでもよいし、一対のニーパッド部１１０のみを含んでいてもよく、左ニーパッド部１１０Ｌまたは右ニーパッド部１１０Ｒのみを含んでいてもよい。いずれの構成においても、跨ぎ部パッド１００が、負のポアソン比を有する部分（第１部分）Ｐ１を含むことにより、快適性を向上させる効果が得られる。 In the description so far, the configuration in which the straddle pad 100 includes a pair of knee pad portions 110 and the middle pad portion 120 has been exemplified, but the straddle pad 100 is not limited to such a configuration. The straddle pad 100 may include only the middle pad section 120, only the pair of knee pad sections 110, or only the left knee pad section 110L or the right knee pad section 110R. In either configuration, the straddle pad 100 including the portion (first portion) P1 having a negative Poisson's ratio has the effect of improving comfort.
　なお、跨ぎ部パッド１００は、布や皮革などで形成された表皮材（以下「パッドカバー」と呼ぶ）に包まれていてもよい。左ニーパッド部１１０Ｌおよび右ニーパッド部１１０Ｒが、ミドルパッド部１２０と分離されている場合には、ミドルパッド部１２０、左ニーパッド部１１０Ｌおよび右ニーパッド部１１０Ｒが、それぞれ別のパッドカバーに包まれていてもよいし、１つのパッドカバーによって一体に包まれていてもよい。また、跨ぎ部パッド１００は、布や皮革などで形成された下地材（以下「パッドベース」と呼ぶ）上に付けられていてもよい。左ニーパッド部１１０Ｌおよび右ニーパッド部１１０Ｒが、ミドルパッド部１２０と分離されている場合には、ミドルパッド部１２０、左ニーパッド部１１０Ｌおよび右ニーパッド部１１０Ｒが、それぞれ別のパッドベース上に付けられていてもよいし、１つのパッドベース上に付けられていてもよい。 Note that the straddle pad 100 may be wrapped in a skin material (hereinafter referred to as a "pad cover") made of cloth, leather, or the like. When the left kneepad section 110L and the right kneepad section 110R are separated from the middle pad section 120, the middle pad section 120, the left kneepad section 110L and the right kneepad section 110R are each wrapped in a separate pad cover. Alternatively, they may be integrally wrapped by one pad cover. Further, the straddle pad 100 may be attached to a base material (hereinafter referred to as a "pad base") made of cloth, leather, or the like. When the left kneepad section 110L and the right kneepad section 110R are separated from the middle pad section 120, the middle pad section 120, the left kneepad section 110L and the right kneepad section 110R are attached to separate pad bases. or may be attached on one pad base.
　上述したように、本発明の実施形態によると、快適性が向上する跨ぎ部パッドを提供することができる。これまでの説明では、鞍乗型車両として自動二輪車を例示したが、本発明の実施形態による跨ぎ部パッドは、自動二輪車以外の鞍乗型車両にも好適に用いることができ、例えば水上オートバイなどにも用いることができる。また、本発明の実施形態による跨ぎ部パッドは、駆動源として内燃機関（エンジン）に代えて（あるいは加えて）電動モータを有する鞍乗型車両にも好適に用いることができる。鞍乗型車両の種類や仕様によっては、シートの直ぐ前に配置される部材が燃料タンクではない（例えばダミータンクやバッテリ収容ケースである）こともあり、その場合、「跨ぎ部」は燃料タンクを含まないこともある。また、シートの直ぐ前に配置される部材が燃料タンクである場合、燃料タンクを覆うカバーが設けられていてもよい。その場合（つまり跨ぎ部がそのようなカバーを含む場合）、跨ぎ部パッドはカバーに取り付けられる。 As described above, according to the embodiments of the present invention, it is possible to provide a straddle pad with improved comfort. In the explanation so far, a motorcycle has been illustrated as an example of a straddle-type vehicle, but the straddle pad according to an embodiment of the present invention can also be suitably used for a straddle-type vehicle other than a motorcycle, such as a personal watercraft. It can also be used for Further, the straddle pad according to the embodiment of the present invention can also be suitably used for a saddle type vehicle having an electric motor instead of (or in addition to) an internal combustion engine as a driving source. Depending on the type and specifications of the straddle-type vehicle, the component placed directly in front of the seat may not be the fuel tank (for example, a dummy tank or battery storage case), and in that case, the "straddle part" may be the fuel tank. It may not include. Further, when the member disposed immediately in front of the seat is a fuel tank, a cover may be provided to cover the fuel tank. In that case (ie, if the straddle includes such a cover), the straddle pad is attached to the cover.
　上述したように、本発明の実施形態による跨ぎ部パッド１００は、少なくとも一部がライダーに接するように鞍乗型車両１の跨ぎ部に取り付けられる鞍乗型車両用跨ぎ部パッド１００であって、負のポアソン比を有する第１部分Ｐ１を含む。 As described above, the straddle pad 100 according to the embodiment of the present invention is a straddle pad 100 for a straddle-type vehicle that is attached to the straddle portion of the straddle-type vehicle 1 so that at least a portion thereof is in contact with a rider. It includes a first portion P1 having a negative Poisson's ratio.
　本発明の実施形態による跨ぎ部パッド１００は、負のポアソン比を有する（つまりオーセチック構造を有する）部分（第１部分）Ｐ１を含むので、その部分Ｐ１は、荷重が加えられると荷重点を包み込むように変形する。そのため、ライダーの身体に対するフィット感が向上するので、快適性が向上する。 The straddle pad 100 according to the embodiment of the present invention includes a portion (first portion) P1 having a negative Poisson's ratio (that is, having an auxetic structure), so that the portion P1 wraps around the load point when a load is applied. It transforms like this. Therefore, the fit to the rider's body is improved, and comfort is improved.
　ある実施形態において、前記跨ぎ部パッド１００は、前記第１部分Ｐ１のポアソン比と異なるポアソン比を有する第２部分Ｐ２を含む。 In one embodiment, the straddle pad 100 includes a second portion P2 having a Poisson's ratio different from the Poisson's ratio of the first portion P1.
　本発明の実施形態による跨ぎ部パッド１００は、第１部分Ｐ１のポアソン比と異なるポアソン比を有する第２部分Ｐ２を含んでいてもよい。つまり、本発明の実施形態による跨ぎ部パッド１００は、ポアソン比に分布を有していてもよい。跨ぎ部パッド１００がポアソン比に分布を有することにより、跨ぎ部パッド１００に接するライダーの身体部位に応じたフィット感を設定することができ、快適性がいっそう向上する。 The straddle pad 100 according to the embodiment of the present invention may include a second portion P2 having a Poisson's ratio different from the Poisson's ratio of the first portion P1. That is, the straddle pad 100 according to the embodiment of the present invention may have a distribution in Poisson's ratio. Since the straddle pad 100 has a distribution in Poisson's ratio, it is possible to set a fit according to the body part of the rider that is in contact with the straddle pad 100, further improving comfort.
　ある実施形態において、前記跨ぎ部パッド１００は、ライダーの膝および／または内腿に接する位置に配置される一対のニーパッド部１１０と、前記一対のニーパッド部１１０の間に位置するミドルパッド部１２０とを有し、前記一対のニーパッド部１１０のそれぞれに前記第１部分Ｐ１が含まれる。 In one embodiment, the straddle pad 100 includes a pair of knee pad sections 110 arranged in contact with the rider's knees and/or inner thighs, and a middle pad section 120 located between the pair of knee pad sections 110. Each of the pair of kneepad portions 110 includes the first portion P1.
　負のポアソン比を有する第１部分Ｐ１がニーパッド部１１０に含まれていることにより、ニーパッド部１１０におけるフィット感を高くすることができる。そのため、ニーグリップが弱くても身体をしっかりホールドできので、ニーグリップが容易となり、快適性が向上する。 By including the first portion P1 having a negative Poisson's ratio in the kneepad section 110, the fit of the kneepad section 110 can be improved. Therefore, even if the knee grip is weak, the body can be firmly held, making the knee grip easier and improving comfort.
　ある実施形態において、前記跨ぎ部パッド１００は、互いに硬さが異なる第３部分Ｐ３および第４部分Ｐ４を含む。 In one embodiment, the straddle pad 100 includes a third portion P3 and a fourth portion P4 that have different hardnesses.
　本発明の実施形態による跨ぎ部パッド１００は、互いに硬さが異なる第３部分Ｐ３および第４部分Ｐ４を含んでいてもよい。つまり、本発明の実施形態による跨ぎ部パッド１００は、硬さ分布を有していてもよい。跨ぎ部パッド１００が硬さ分布を有することにより、跨ぎ部パッド１００に接する身体部位に応じた硬さを設定することができ、快適性がいっそう向上する。 The straddle pad 100 according to the embodiment of the present invention may include a third portion P3 and a fourth portion P4 having different hardnesses. That is, the straddle pad 100 according to the embodiment of the present invention may have a hardness distribution. Since the straddle pad 100 has a hardness distribution, the hardness can be set according to the body part that comes into contact with the straddle pad 100, further improving comfort.
　ある実施形態において、前記跨ぎ部パッド１００は、ライダーの膝および／または内腿に接する位置に配置される一対のニーパッド部１１０と、前記一対のニーパッド部１１０の間に位置するミドルパッド部１２０とを有し、前記第３部分Ｐ３は、前記第４部分Ｐ４よりも硬く、前記一対のニーパッド部１１０のそれぞれに前記第３部分Ｐ３が含まれ、前記ミドルパッド部１２０に前記第４部分Ｐ４が含まれる。 In one embodiment, the straddle pad 100 includes a pair of knee pad sections 110 arranged in contact with the rider's knees and/or inner thighs, and a middle pad section 120 located between the pair of knee pad sections 110. The third portion P3 is harder than the fourth portion P4, each of the pair of knee pad portions 110 includes the third portion P3, and the middle pad portion 120 includes the fourth portion P4. included.
　相対的に硬い第３部分Ｐ３がニーパッド部１１０に含まれ、相対的に柔らかい第４部分Ｐ４がミドルパッド部１２０に含まれていることにより、ニーグリップ時に身体をしっかり支持したい部位であるニーパッド部１１０を硬くするとともに、体圧を分散して圧迫感を軽減したい部位であるミドルパッド部１２０を柔らかくすることができる。 The relatively hard third part P3 is included in the knee pad part 110, and the relatively soft fourth part P4 is included in the middle pad part 120, so that the knee pad part, which is the part where you want to firmly support your body when you grip the knee, 110 can be made hard, and the middle pad part 120, which is the part where it is desired to disperse body pressure and reduce the feeling of pressure, can be made soft.
　ある実施形態において、前記ミドルパッド部１２０の最大厚さは、前記一対のニーパッド部１１０のそれぞれの最小厚さよりも大きく、かつ、前記一対のニーパッド部１１０のそれぞれの最大厚さ以上である。 In one embodiment, the maximum thickness of the middle pad section 120 is greater than the minimum thickness of each of the pair of knee pad sections 110 and greater than or equal to the maximum thickness of each of the pair of knee pad sections 110.
　ミドルパッド部１２０の最大厚さは、各ニーパッド部１１０の最小厚さよりも大きく、かつ、各ニーパッド部１１０の最大厚さ以上であってもよい。つまり、跨ぎ部パッド１００は、厚さ分布を有していてもよい。跨ぎ部パッド１００が厚さ分布を有することにより、跨ぎ部パッド１００に接するライダーの身体部位に応じた適切な体圧分散を図ることができ、快適性が向上する。ミドルパッド部１２０の最大厚さが各ニーパッド部１１０の最小厚さよりも大きく、かつ、各ニーパッド部１１０の最大厚さ以上であることにより、ミドルパッド部１２０におけるフィット感および振動低減性を高めつつ、ニーパッド部１１０における下半身の保持（ニーグリップ）を好適に行うことができる。 The maximum thickness of the middle pad section 120 may be greater than the minimum thickness of each knee pad section 110 and greater than or equal to the maximum thickness of each knee pad section 110. That is, the straddle pad 100 may have a thickness distribution. Since the straddle pad 100 has a thickness distribution, it is possible to appropriately distribute the body pressure according to the part of the rider's body that is in contact with the straddle pad 100, thereby improving comfort. By making the maximum thickness of the middle pad section 120 larger than the minimum thickness of each knee pad section 110 and greater than or equal to the maximum thickness of each knee pad section 110, it is possible to improve the fit and vibration reduction properties of the middle pad section 120. , it is possible to suitably hold the lower body (knee grip) in the knee pad portion 110.
　ある実施形態において、前記ミドルパッド部１２０の最大厚さは、前記一対のニーパッド部１１０のそれぞれの最大厚さよりも大きい。 In one embodiment, the maximum thickness of the middle pad section 120 is greater than the maximum thickness of each of the pair of knee pad sections 110.
　ミドルパッド部１２０におけるフィット感および振動低減性を高める観点からは、ミドルパッド部１２０の最大厚さは、各ニーパッド部１１０の最大厚さよりも大きいことが好ましい。 From the viewpoint of improving the fit and vibration reduction properties of the middle pad section 120, the maximum thickness of the middle pad section 120 is preferably larger than the maximum thickness of each knee pad section 110.
　ある実施形態において、前記跨ぎ部パッド１００は、三次元格子状の複数の単位構造体Ｕを含むラティス構造を有する。 In one embodiment, the straddle pad 100 has a lattice structure including a plurality of unit structures U in a three-dimensional lattice shape.
　跨ぎ部パッド１００は、三次元格子状の複数の単位構造体Ｕを含むラティス構造を有していてもよい。ラティス構造の単位構造体Ｕの設計を適宜変更することにより、跨ぎ部パッド１００のポアソン比を調整して負のポアソン比を実現することができる。また、跨ぎ部パッド１００の複数の部分において、単位構造体Ｕの設計を互いに異ならせることによってポアソン比を互いに異ならせたり、硬さを互いに異ならせたりすることもできる（つまり跨ぎ部パッド１００にポアソン比の分布を持たせたり、硬さの分布を持たせたりすることができる）。さらに、跨ぎ部パッド１００がラティス構造を有することにより、通気性が向上し、蒸れを抑制することができる。 The straddle pad 100 may have a lattice structure including a plurality of unit structures U in a three-dimensional lattice shape. By appropriately changing the design of the unit structure U having a lattice structure, the Poisson's ratio of the straddle pad 100 can be adjusted to realize a negative Poisson's ratio. Furthermore, in a plurality of parts of the straddle pad 100, by making the designs of the unit structures U different from each other, Poisson's ratios can be made to differ from each other, or the hardness can be made to differ from each other. (Can have a Poisson's ratio distribution or a hardness distribution.) Furthermore, since the straddle pad 100 has a lattice structure, breathability is improved and stuffiness can be suppressed.
　ある実施形態において、前記跨ぎ部パッド１００は、付加製造技術により樹脂材料またはゴム材料から形成されている。 In some embodiments, the straddle pad 100 is formed from a resin material or a rubber material by additive manufacturing techniques.
　本発明の実施形態による跨ぎ部パッド１００は、例えば、付加製造技術を用いて樹脂材料またはゴム材料から形成され得る。付加製造技術を用いることにより、ラティス構造を有する跨ぎ部パッド１００を好適に形成することができ、負のポアソン比を有する跨ぎ部パッド１００を容易に得ることができる。 The straddle pad 100 according to embodiments of the invention may be formed from a resin material or a rubber material using additive manufacturing techniques, for example. By using additive manufacturing technology, the straddle pad 100 having a lattice structure can be suitably formed, and the straddle pad 100 having a negative Poisson's ratio can be easily obtained.
　本発明の実施形態による鞍乗型車両１は、上述したいずれかの構成を有する跨ぎ部パッド１００を備える。 The straddle-type vehicle 1 according to the embodiment of the present invention includes a straddle pad 100 having any of the configurations described above.
　本発明の実施形態による跨ぎ部パッド１００は、各種の鞍乗型車両１に好適に用いられる。 The straddle pad 100 according to the embodiment of the present invention is suitably used in various saddle type vehicles 1.
　本発明の実施形態によると、快適性が向上する鞍乗型車両用跨ぎ部パッドを提供することができる。本発明の実施形態による跨ぎ部パッドは、種々の鞍乗型車両に好適に用いられる。 According to the embodiments of the present invention, it is possible to provide a straddle-type vehicle straddle pad that improves comfort. The straddle pad according to the embodiment of the present invention is suitably used in various saddle type vehicles.
　１：自動二輪車、２：前輪、３：後輪、４：内燃機関（エンジン）、５：燃料タンク、６：シート、７：フロントフォーク、８：リアアーム、９：ピボット軸、１０：車体フレーム、１１：ヘッドパイプ、１２：サイドフレーム、１３：ダウンフレーム、１４：ハンドル、１５：チェーン、１６：タンクサイドカバー、１００：跨ぎ部パッド、１１０：ニーパッド部、１１０Ｌ：左ニーパッド部、１１０Ｌａ：左ニーパッド部の第１の領域、１１０Ｌｂ：左ニーパッド部の第２の領域、１１０Ｒ：右ニーパッド部、１１０Ｒａ：右ニーパッド部の第３の領域、１１０Ｒｂ：右ニーパッド部の第４の領域、１２０：ミドルパッド部、１２０ａ：ミドルパッド部の第５の領域、１２０ｂ：ミドルパッド部の第６の領域、１２０ｃ：ミドルパッド部の第７の領域、１２０ｕ：ミドルパッド部の上領域、１２０ｌ：ミドルパッド部の下領域、Ｐ１：第１部分、Ｐ２：第２部分、Ｐ３：第３部分、Ｐ４：第４部分ＬＰ：格子部、ＳＰ：空隙部、Ｕ：単位構造体、ｂ：梁 1: Motorcycle, 2: Front wheel, 3: Rear wheel, 4: Internal combustion engine, 5: Fuel tank, 6: Seat, 7: Front fork, 8: Rear arm, 9: Pivot shaft, 10: Body frame, 11: Head pipe, 12: Side frame, 13: Down frame, 14: Handle, 15: Chain, 16: Tank side cover, 100: Straddle pad, 110: Knee pad section, 110L: Left knee pad section, 110La: Left knee pad 110Lb: Second region of left kneepad section, 110R: Right kneepad section, 110Ra: Third region of right kneepad section, 110Rb: Fourth region of right kneepad section, 120: Middle pad 120a: fifth region of middle pad section, 120b: sixth region of middle pad section, 120c: seventh region of middle pad section, 120u: upper region of middle pad section, 120l: middle pad section Lower area, P1: first part, P2: second part, P3: third part, P4: fourth part LP: lattice part, SP: void part, U: unit structure, b: beam

Claims (10)

  1. 　少なくとも一部がライダーに接するように鞍乗型車両の跨ぎ部に取り付けられる鞍乗型車両用跨ぎ部パッドであって、
    　負のポアソン比を有する第１部分を含む、跨ぎ部パッド。     A straddle-type vehicle straddle pad that is attached to a straddle-type vehicle so that at least a portion of the pad is in contact with a rider,
    A straddle pad including a first portion having a negative Poisson's ratio.
  2. 　前記第１部分のポアソン比と異なるポアソン比を有する第２部分を含む、請求項１に記載の跨ぎ部パッド。 The straddle pad according to claim 1, comprising a second portion having a Poisson's ratio different from the Poisson's ratio of the first portion.
  3. 　ライダーの膝および／または内腿に接する位置に配置される一対のニーパッド部と、
    　前記一対のニーパッド部の間に位置するミドルパッド部と、
    を有し、
    　前記一対のニーパッド部のそれぞれに前記第１部分が含まれる、請求項１または２に記載の跨ぎ部パッド。     a pair of knee pads arranged in contact with the rider's knees and/or inner thighs;
    a middle pad section located between the pair of knee pad sections;
    has
    The straddle pad according to claim 1 or 2, wherein each of the pair of knee pad portions includes the first portion.
  4. 　互いに硬さが異なる第３部分および第４部分を含む、請求項１または２に記載の跨ぎ部パッド。 The straddle pad according to claim 1 or 2, comprising a third portion and a fourth portion having different hardnesses.
  5. 　ライダーの膝および／または内腿に接する位置に配置される一対のニーパッド部と、
    　前記一対のニーパッド部の間に位置するミドルパッド部と、
    を有し、
    　前記第３部分は、前記第４部分よりも硬く、
    　前記一対のニーパッド部のそれぞれに前記第３部分が含まれ、
    　前記ミドルパッド部に前記第４部分が含まれる、請求項４に記載の跨ぎ部パッド。     a pair of knee pads arranged in contact with the rider's knees and/or inner thighs;
    a middle pad section located between the pair of knee pad sections;
    has
    The third portion is harder than the fourth portion,
    Each of the pair of kneepad portions includes the third portion,
    The straddle pad according to claim 4, wherein the middle pad portion includes the fourth portion.
  6. 　前記ミドルパッド部の最大厚さは、前記一対のニーパッド部のそれぞれの最小厚さよりも大きく、かつ、前記一対のニーパッド部のそれぞれの最大厚さ以上である、請求項３または５に記載の跨ぎ部パッド。 The straddle according to claim 3 or 5, wherein the maximum thickness of the middle pad portion is greater than the minimum thickness of each of the pair of knee pad portions and greater than or equal to the maximum thickness of each of the pair of knee pad portions. Department pad.
  7. 　前記ミドルパッド部の最大厚さは、前記一対のニーパッド部のそれぞれの最大厚さよりも大きい、請求項６に記載の跨ぎ部パッド。 The straddle pad according to claim 6, wherein the maximum thickness of the middle pad portion is greater than the maximum thickness of each of the pair of knee pad portions.
  8. 　三次元格子状の複数の単位構造体を含むラティス構造を有する、請求項１から７のいずれかに記載の跨ぎ部パッド。 The straddle pad according to any one of claims 1 to 7, having a lattice structure including a plurality of unit structures in a three-dimensional lattice shape.
  9. 　付加製造技術により樹脂材料またはゴム材料から形成されている、請求項１から８のいずれかに記載の跨ぎ部パッド。 The straddle pad according to any one of claims 1 to 8, which is formed from a resin material or a rubber material by additive manufacturing techniques.
  10. 　請求項１から９のいずれかに記載の跨ぎ部パッドを備えた鞍乗型車両。 A straddle-type vehicle comprising the straddle pad according to any one of claims 1 to 9.
PCT/JP2023/007817 2022-03-18 2023-03-02 Pad for straddled part of saddled vehicle and saddled vehicle WO2023176476A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0642569U (en) * 1992-11-24 1994-06-07 正人 高橋 Tank pad
US5511822A (en) * 1993-10-22 1996-04-30 Wolanski; Daniel B. Motorcycle tank pad apparatus and methods
US20100007115A1 (en) * 2006-08-04 2010-01-14 Moto Comp Limited Motorcycle Grip Pad, System, Motorcycle and Riding Apparel therefor
US20210076758A1 (en) * 2019-09-12 2021-03-18 G-Form Llc Conformable And Expandable Protective Cushioning Pads And Articles Of Apparel Including Such Pads
US20210235798A1 (en) * 2018-04-24 2021-08-05 Cannon & Macintosh Investment Limited Method for providing a padding
JP2021531107A (en) * 2018-07-18 2021-11-18 ボルト スレッズ インコーポレイテッド Footwear and manufacturing method of resilin material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0642569U (en) * 1992-11-24 1994-06-07 正人 高橋 Tank pad
US5511822A (en) * 1993-10-22 1996-04-30 Wolanski; Daniel B. Motorcycle tank pad apparatus and methods
US20100007115A1 (en) * 2006-08-04 2010-01-14 Moto Comp Limited Motorcycle Grip Pad, System, Motorcycle and Riding Apparel therefor
US20210235798A1 (en) * 2018-04-24 2021-08-05 Cannon & Macintosh Investment Limited Method for providing a padding
JP2021531107A (en) * 2018-07-18 2021-11-18 ボルト スレッズ インコーポレイテッド Footwear and manufacturing method of resilin material
US20210076758A1 (en) * 2019-09-12 2021-03-18 G-Form Llc Conformable And Expandable Protective Cushioning Pads And Articles Of Apparel Including Such Pads

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