CN1730972A

CN1730972A - V-shaped belt, belt-type transmission, and saddle type-vehicle

Info

Publication number: CN1730972A
Application number: CN 200510087782
Authority: CN
Inventors: 大石明文; 石田洋介
Original assignee: Yamaha Motor Co Ltd
Current assignee: Yamaha Motor Co Ltd
Priority date: 2004-08-06
Filing date: 2005-08-08
Publication date: 2006-02-08
Anticipated expiration: 2025-08-08
Also published as: CN100523543C

Abstract

The objective of the invention is to enhance the durability of the V-shaped belt by allowing the strength and the heat-radiating property of the resin blocks to stand together at high levels in the V-shaped belt, which has a plurality of resin blocks and endless connecting members connecting the resin blocks. The V-shaped belt includes a plurality of resin blocks arranged in a direction and an endless connecting member that is impacted into the resin blocks and that extends in the arrangement direction of the resin blocks. Depressions are longitudinally and vertically formed in the upside and downside of the front surface and the rear surface of each resin block. The depressions are separated from the connecting member and are also separated from the lateral surfaces of the resin block.

Description

V-belt, belt speed change gear and saddle-ride type vehicle

Technical field

The present invention relates to a kind of V-belt, a kind of belt speed change gear and a kind of saddle-ride type vehicle.

Background technique

Usually, (section, joint block) have been used to be installed in Belt-type Adjustable-speed device on motorcycle or the analog with the V-belt of the ring-type that is used to be connected these pieces (endless) link to have a plurality of.Be used for this V-strapped and be known as by the metal for example piece made of aluminium, piece by obtaining with resin-coating metal-molding material, or analog.

Use this V-belt on belt wheel by V-belt being wrapped in high speed rotating or the analog.As a result, need reduce V-strapped weight to help high speed rotating.Therefore, in order to reduce V-strapped weight, existing people proposes to use the piece (for example, seeing patent documentation 1) of piece (the being hereinafter referred to as resin mass) conduct (V-belt) that is formed from a resin or is formed from a resin substantially.

Below with reference to disclosed V-belt in Figure 22 and the 23 explanation patent documentations 1.As shown in Figure 22, V-belt 100 comprises a plurality of resin mass 101 and the cyclic adapting piece 102 of being arranged to a row.As shown in Figure 23 (b), from the front, each resin mass 101 is shaped as the H shape of toppling over, and inwardly forms groove 105 in the both sides of each resin mass 101.As shown in Figure 22, link 102 is embedded in the groove 105 of each resin mass 101.As a result, resin mass 101 interconnects by this link 102.Link 102 comprises rubber 103 and the core 104 that is embedded in the rubber 103.Although not shown, this V-belt 100 is wrapped on the main pulley and time belt wheel of a Belt-type Adjustable-speed device.

Owing in V-belt 100, produce a large amount of heat with the belt wheel friction.In addition, between resin mass 101 and link 102, produce frictional heat.In the time of on being wrapped in belt wheel and analog, according to heat in uneven can the generation of link.Therefore, this heat is easy to make the temperature of V-belt 100 to raise.

But resin is the material that a kind of its thermal conductivity is lower than the thermal conductivity of metal.As a result, in the V-belt 100 that adopts resin mass 101, because heat is trapped in the resin mass 101 easily, so the temperature of resin mass 101 and link 102 raises easily.Therefore, consider that from the heat-resistant quality aspect V-belt 100 is good inadequately.

Therefore, the someone proposes a kind of V-belt with improved heat dissipation characteristics.In patent documentation 2, a kind of V-belt with the H shape resin mass of toppling over is disclosed, in the both sides of the end face of this resin mass, have recessed recess downwards.In this V-belt, because can enlarge heat diffusion area by this recess, and can reduce transmission of heat distance between outside air and the joining portion (wherein this resin mass and link are bonded with each other position), this joining portion is the friction thermal source, so can dispel the heat to frictional heat effectively.

In patent documentation 3, disclose and a kind ofly vulcanized the V-belt that forms integratedly by belt body with piece and ring-type, between adjacent piece, form the gap, and cooling air is introduced gap between the piece.Particularly, disclose a kind of V-belt in the patent documentation 3, and a kind ofly had by utilizing pin with the be bonded with each other V-belt of the piece that obtains of upper mass and bottom piece together with the H shape piece of toppling over.In the V-belt with the H shape piece of toppling over, the thickness of two lateral ends of each piece is less than the thickness at the center of this piece, forms the gap between the adjacent block thereby be in the lateral ends of piece.On the other hand, in V-belt, not between the adjacent bottom piece but between adjacent upper mass, form the gap with piece of forming by upper mass and bottom piece.

[patent documentation 1] JP-A-2002-147553

[patent documentation 2] JP-UM-A-61-97647

[patent documentation 3] JP-A-61-286638

Summary of the invention

[the problem to be solved in the present invention]

But, in patent documentation 2 disclosed V-belts, because in the end face of resin mass, form recessed recess downwards, so reduce with the area of two transverse sides of the contacted resin mass of belt wheel.As a result, can not between this V-belt and belt wheel, guarantee enough area of contact, thereby enough intensity can not be provided.Specifically, be difficult to keep high rigidity (longitudinal rigidity) along the orientation of resin mass.On the contrary, so that when keeping enough intensity, heat diffusion area can reduce when the size that reduces recess.Therefore, can not obtain enough cooling effects.

In the disclosed V-belt with the H shape piece of toppling over of patent documentation 3, because can not between belt wheel and above-mentioned V-belt, guarantee enough area of contact, so be difficult to the intensity that keeps enough.In addition, because the gap between the adjacent block arrives the belt body in the V-belt, so although these pieces and belt body vulcanize integratedly, the insufficient strength height of the junction of these pieces and belt body.

In the disclosed V-belt with upper mass and bottom piece of patent documentation 3, this bottom piece contact belt wheel, but between adjacent bottom piece, do not form the gap.As a result, can guarantee has enough area of contact between belt wheel and the V-belt, but is difficult to obtain enough cooling effects.In this V-belt, can obtain to a certain degree cooling effect from upper mass.But, because upper mass and bottom piece are by the interconnective independent component of pin, so effective cooling of upper mass can not be guaranteed the bottom piece cooling.

As mentioned above, in conventional V-belt, be difficult to keep simultaneously the intensity and the heat dispersion of resin mass.

The present invention designs in view of the above problems, and a target of the present invention is, is in high level by intensity and the heat dispersion that makes the resin mass in the V-belt with resin mass and link, improves V-strapped durability.

[scheme that addresses this problem]

According to an aspect of the present invention, provide a kind of V-belt, comprising: a plurality of resin mass of Pai Lieing in one direction; And in the orientation of this resin mass, extend and embed in this resin mass to connect the cyclic adapting piece of this resin mass, wherein, in each resin mass, being formed with recess, this recess is recessed on and separates with this link in the orientation of this resin mass.

In this V-belt, because in each resin mass, be formed on the recess that orientation is recessed on, thus can enlarge the heat diffusion area of resin mass, and between resin mass, introduce air, thus heat dispersion improved.In addition, because recess and link separate, so according to the shape of this recess, the bond strength between resin mass and the link can not weaken, thereby can make this V-belt keep high strength.Therefore, can make the intensity of resin mass and heat dispersion keep high level jointly, thereby improve this V-strapped durability.

According to a further aspect in the invention, provide a kind of V-belt, comprising: a plurality of resin mass of Pai Lieing in one direction, each resin mass all inwardly forms groove at the vertical centre place of two transverse sides; And in the orientation of resin mass, extend and embed in the groove of this resin mass to connect the cyclic adapting piece of this resin mass, wherein, all form in the lateral centre of each resin mass and to be exposed to airborne recess.

The inventor finds that the part that the heat in so-called H shape resin mass of toppling over is easy to be trapped in wherein is a core, thereby can cool off whole resin mass effectively by cooling off this core.In this V-belt, be exposed to airborne recess in the formation of the center of each H shape resin mass of toppling over.As a result, because directly cooling heat is easy to be trapped in wherein part, needn't enlarge this recess so can obtain enough heat dispersions.Therefore, can make the intensity of resin mass and heat dispersion be co-located on high level, thereby can improve this V-strapped durability.

According to a further aspect in the invention, a kind of V-belt is provided, comprise: a plurality of resin mass of Pai Lieing in one direction, each resin mass all inwardly forms groove at the vertical centre place of two transverse sides, and in the orientation of resin mass, extend and embed in the groove of this resin mass to connect the cyclic adapting piece of this resin mass, wherein, form recess in each resin mass, this recess is exposed in the air and with two transverse sides of this resin mass to be separated.

In this V-belt, be exposed to airborne recess because in each resin mass, form, so can improve heat dispersion.In addition, because two transverse sides of this recess and each resin mass separate, so can guarantee area of contact between this resin mass and the belt wheel effectively.As a result, although be formed with recess, but still can keep the intensity of this resin mass higher.Therefore, can make the intensity of resin mass and heat dispersion be co-located on high level, thereby can improve this V-strapped durability.

According to a further aspect in the invention, a kind of V-belt is provided, comprise: a plurality of resin mass that comprise carbon fiber and arrange in one direction, and in the orientation of resin mass, extend and embed in this resin mass to connect the cyclic adapting piece of this resin mass, wherein, in each resin mass, be formed with and be exposed to airborne recess.

The inventor notices that the thermal conductivity of carbon fiber is better than resin mass greatly, and when considering to form recess in resin mass carbon fiber is added in the resin mass.In this V-belt, the heat in the resin mass can be delivered to the surface of resin mass effectively by carbon fiber, i.e. the surface of recess, thus improve heat dispersion.In addition, because carbon fiber is used as reinforcing material, so although be formed with recess, but still can keep the intensity of this resin mass higher.Therefore, can make the intensity of resin mass and heat dispersion be co-located on high level, thereby improve this V-strapped durability.

[beneficial effect of the present invention]

According to the invention described above, can keep the intensity and the heat dispersion of resin mass simultaneously, thereby improve this V-strapped durability.

Description of drawings

Fig. 1 is the side view of motorcycle according to an embodiment of the invention.

Fig. 2 is the side view of power unit.

Fig. 3 is the sectional view of Belt-type Adjustable-speed device.

Fig. 4 is the V-strapped side view according to first embodiment.

Fig. 5 is the sectional view along the line V-V of Fig. 4.

Fig. 6 is the explanatory drawing according to first embodiment's resin mass, and wherein Fig. 6 (a) is a plan view, and Fig. 6 (b) is a front view, and Fig. 6 (c) is a side view.

Fig. 7 is the schematic representation that the air flows in the V-belt is shown.

Fig. 8 is the explanatory drawing according to second embodiment's resin mass, and wherein Fig. 8 (a) is a plan view, and Fig. 8 (b) is a front view, and Fig. 8 (c) is the sectional view along the line VIIIc-VIIIc of Fig. 8 (b).

Fig. 9 is the V-strapped vertical sectional view according to second embodiment.

Figure 10 is the explanatory drawing according to the 3rd embodiment's resin mass, and wherein Figure 10 (a) is a plan view, and Figure 10 (b) is a front view, and Figure 10 (c) is the sectional view along the line Xc-Xc of Figure 10 (b).

Figure 11 is the explanatory drawing according to the 4th embodiment's resin mass, and wherein Figure 11 (a) is a plan view, and Figure 11 (b) is a front view, and Figure 11 (c) is the sectional view along the line XIc-XIc of Figure 11 (b).

Figure 12 is the explanatory drawing according to the 5th embodiment's resin mass, and wherein Figure 12 (a) is a plan view, and Figure 12 (b) is a front view, and Figure 12 (c) is the sectional view along the line XIIc-XIIc of Figure 12 (b).

Figure 13 is the V-strapped longitudinal sectional view according to the 6th embodiment.

Figure 14 is the V-strapped longitudinal sectional view according to the 7th embodiment.

Figure 15 is the V-strapped longitudinal sectional view according to the 8th embodiment.

Figure 16 is the V-strapped longitudinal sectional view according to the 9th embodiment.

Figure 17 is the V-strapped longitudinal sectional view according to the tenth embodiment.

Figure 18 is the V-strapped longitudinal sectional view according to the 11 embodiment.

Figure 19 is the V-strapped longitudinal sectional view according to the 12 embodiment.

Figure 20 is the V-strapped longitudinal sectional view according to the 13 embodiment.

Figure 21 is the V-strapped longitudinal sectional view according to another embodiment.

Figure 22 is conventional V-strapped sectional view.

Figure 23 is the explanatory drawing of conventional resin mass, and wherein Figure 23 (a) is a plan view, and Figure 23 (b) is a front view, and Figure 23 (c) is a side view.

Embodiment

Below, exemplary embodiment of the present invention is described with reference to the accompanying drawings.

Fig. 1 illustrates the motorcycle 1 as an example of saddle-ride type vehicle.Motorcycle 1 has vehicle frame 2.Vehicle frame 2 comprises head steering tube 3, is responsible for 4 about a pair of, and is positioned at each and is responsible for seat guide rail 5 on 4.Head steering tube 3 is positioned at the front end of vehicle frame 2, and by front fork 6 supporting front-wheels 7.

Each is responsible for 4 and extends back from this head steering tube 3.Each is responsible for 4 and has from this head steering tube 3 backward and the first half 4a that extends downwards obliquely, from this first half 4a backward and the central part 4c that extends of approximate horizontal ground, and from this central part 4c backward and upwardly extending obliquely latter half of 4b.

Seat guide rail 5 is crossed over the first half 4a and the latter half of 4b of this pipe 4.Seat guide rail 5 supporting driver persons ride the seat 8 of seat.Vehicle frame 2 is covered by car cover 9.Car cover 9 is arranged on the lower end of seat 8 continuously.

Back arm support 10 is fixed on each person in charge's 4 the intermediate portion 4c.Back arm support 10 is given prominence to downwards from each intermediate portion 4c that is responsible for 4.The postbrachium 11 that these back arm support 10 supportings extend back.This postbrachium 11 can pivot on a supporting point of this back arm support 10 up and down.Trailing wheel 12 is by the rearward end supporting of postbrachium 11.

Vehicle frame 2 supportings are used to drive the power unit 13 of trailing wheel 12.Power unit 13 comprises four circulation single-cylinder engines 14 and Belt-type Adjustable-speed device 15 (see figure 2)s.Power unit 13 is covered by car cover 9.

Motor 14 is suspended on is responsible for that 4 first half 4a goes up and by its supporting.Motor 14 comprises crankcase 16 and is connected cylinder 17 on this crankcase 16.

Crankcase 16 holds bent axle 18 and unshowned gear reducer.As shown in Figure 3, crankcase 16 is by bearing 19a and 19b supporting crankshaft 18.Bent axle 18 is horizontally disposed with along the vehicle-width direction of motorcycle 1 (among Fig. 3 laterally).

As shown in fig. 1, the output terminal of speed change gear has drive sprocket 20.Drive sprocket 20 is arranged on the back of bent axle 18.The center of trailing wheel 12 has driven sprocket 21.Chain 22 is wrapped between this drive sprocket 20 and the driven sprocket 21.

The cylinder 17 of motor 14 projects upwards along the first half 4a that is responsible for 4 from crankcase 16.As shown in Figure 2, hold piston 23 in the cylinder 17.As shown in Figure 3, bent axle 18 has crankweb 25a and 25b.Be provided with crank pin 24a between crankweb 25a and the 25b.Piston 23 is connected on the crank pin 24a by connecting rod 24.

As shown in Fig. 2 and 3, Belt-type Adjustable-speed device (being hereinafter referred to as " CVT ") 15 is arranged on the right side of crankcase 16.Gearbox 28 covers the right flank of crankcase 16, and VCT15 is contained in the gearbox 28.

CVT15 comprises main pulley 29, inferior belt wheel 30 and is wrapped in V-belt 31 on this main pulley 29 and the inferior belt wheel 30.Main pulley 29 is positioned at the front side in gearbox 28, and is transfused to axle 32 supportings.As shown in Figure 3, input shaft 32 forms with crankshaft 18.The collar 18a that is arranged in the right-hand member place of crankshaft 18 extends to the right towards gearbox 28 (Fig. 3 is not shown).This extension part is also as this input shaft 32.

Main pulley 29 comprise fixed tray 34a with the relative slider disc 34b of this fixed tray 34a.This fixed tray 34a is fixed on the end of input shaft 32.Therefore, fixed tray 34a and input shaft 32 rotate integratedly.On the other hand, slider disc 34b can input shaft 32 axially on slide.Slider disc 34b has a columniform hub portion 35.Input shaft 32 is by the axle collar 36 support cage parts 35.As a result, slider disc 34b can this slider disc 34b near or direction away from this fixed tray 34a on slide, and can be around input shaft 32 rotations.

Main pulley 29 has a pair of

clamp face

37a and 37b, and this is clipped in V-belt 31 therebetween clamp face.Particularly, clamp face 37a forms in the left side of fixed tray 34a, and clamp face 37b forms on the right side of slider disc

34b.Clamp face

37a and 37b form taper shape, and toward each

other.Clamp face

37a and 37b define a trough of belt 38 with V-arrangement cross section between fixed tray 34a and slider disc 34b.The width L1 of this trough of belt 38 can regulate by this slider disc 34b that slides.

Cam disk 39 is fixed on the left side excircle part of input shaft 32.Therefore, cam disk 39 is with input shaft 32 rotations.Cam disk 39 is relative with slider disc 34b in the horizontal.Slider disc 34b is installed on the cam disk 39, and can input shaft 32 axially on slide.As a result, when cam disk 39 and slider disc 34b rotate together, can they mutually near or away from direction on move.

Form the camming surface 40 relative with cam disk 39 in the left side of slider disc 34b.Between this slider disc 34b and cam disk 39, be provided with a plurality of heavy cylinders (weight roller) 41 (a heavy cylinder 41 only is shown among Fig. 3).When camshaft 18 rotations, in heavy cylinder 41, can produce centrifugal force.Heavy cylinder 41 moves along this camming surface 40 in response to this centrifugal force.Move by this, can power to the right be applied on the slider disc 34b from heavy cylinder 41, thereby, slider disc 34b input shaft 32 axially on slide.As a result, the width L1 of trough of belt 38 changes.

Inferior belt wheel 30 is arranged on rear side in gearbox 28.Inferior belt wheel 30 is output axle 42 supportings.Output shaft 42 is arranged to parallel with input shaft 32, and is connected by unshowned automatic centrifugal clutch on the input end of this gear reducer.

Inferior belt wheel 30 has fixed tray 45a and slider disc 45b.The rotating center of fixed tray 45a has a cylindrical collar 46.The axle collar 46 engages the external peripheral surface of output shaft 42.Utilize this joint, fixed tray 45a and output shaft 42 rotate together.

The rotating center of slider disc 45b has sleeve pipe 47.Sleeve pipe 47 is installed on the external peripheral surface of the axle collar 46, to slide on it is axial.Be formed with a plurality of engagement grooves 48 in the sleeve pipe 47.Engagement grooves 48 sleeve pipe 47 axially on extend, and be spaced apart and arranged on the circumferencial direction of sleeve pipe 47.

The axle collar 46 has a plurality of joining pins 49.This joining pin 49 is outside outstanding in the radial direction the axle collar 46, and is embedded slidably in the engagement grooves 48 of sleeve pipe 47.As a result, fixed tray 45a and slider disc 45b rotate jointly, and can they mutually near or away from direction on move.

Inferior belt wheel 30 has a pair of

clamp face

51a and 51b, and this is clipped in V-belt 31 therebetween clamp face.Particularly, clamp face 51a forms on the right side of fixed tray 45a, and clamp face 51b forms in the left side of slider disc

45b.Clamp face

51a and 51b form taper shape, and toward each

other.Clamp face

51a and 51b define a trough of belt 52 with V-arrangement cross section between fixed tray 45a and slider disc 45b.The width L2 of this trough of belt 52 can regulate by this slider disc 45b that slides.

Spring support 53 is fixed on the right-hand member of the axle collar 46.Spring support 53 is laterally relative with slider disc 45b edge.Between spring support 53 and slider disc 45b, be provided with compression helical spring 54.This spring 54 is towards fixed tray 45a bias slide dish 45b.

As shown in Figure 3, V-belt 31 is wrapped on main pulley 29 and time belt wheel 30.Particularly, in the trough of belt 52 of the trough of belt 38 of V-belt 31 embedding main pulleys 29 and inferior belt wheel 30.The detailed structure of V-belt 31 will be described below.

Under the less state of the revolution of crankshaft 18 (for example, motor 14 is in idling conditions or similar state), the centrifugal force that acts on the heavy cylinder 41 is less.Therefore, heavy cylinder 41 is positioned at the radially inner side of main pulley 29.Under this state, slider disc 34b fixed distance dish 34a farthest, and the width L1 maximum of trough of belt 38.As a result, the coiling diameter minimum of the V-belt 31 in the main pulley 29.

On the contrary, in inferior belt wheel 30, spring 54 is towards fixed tray 45a bias slide dish 45b, thus belt width L2 minimum.As a result, the V-belt 31 that embeds in the trough of belt 52 is partly outstanding towards the excircle of inferior belt wheel 30.Therefore, the coiling diameter maximum of the V-belt 31 in the inferior belt wheel 30.

Like this, under the less state of the revolution of crankshaft 18, the coiling diameter minimum in the main pulley 29, and the coiling diameter maximum in the inferior belt wheel 30.As a result, the gear ratio maximum of CVT15.

On the other hand, when the revolution of crankshaft 18 increased, the centrifugal force that acts on the heavy cylinder 41 increased, thereby heavy cylinder 41 is in outside the moving in the radial direction of slider disc 34b.As a result, heavy cylinder 41 pushes slider disc 34b towards the right side, and slider disc 34b slides towards fixed tray 34a.Therefore, the width L1 of trough of belt 38 slowly diminishes.Then, be clipped in outside outstanding in the radial direction at main pulley 29 of V-belt 31 between clamp face 37a and the 37b, thereby the coiling diameter of the V-belt 31 in the main pulley 29 increases.

On the contrary, in inferior belt wheel 30, along with the increase of the coiling diameter in the main pulley 29, V-belt 31 is in inside being pulled in the radial direction to become tight of inferior belt wheel 30.Therefore, V-belt 31 will be applied on the slider disc 45b towards the power of right side effect, thereby the biasing force of slider disc 45b antagonistic spring 54 slides on the direction of slider disc 45b away from fixed tray 45a.As a result, the width L2 of trough of belt 38 slowly becomes big.Therefore, the coiling diameter of the V-belt 31 in the inferior belt wheel 30 reduces.

Like this, when the revolution of crankshaft 18 increased, the coiling diameter in the main pulley 29 increased, and the coiling diameter in the inferior belt wheel 30 reduces.Therefore, in described CVT15 so far, gear ratio changes automatically and continuously along with the increase of the revolution of crankshaft 18.In addition, when the coiling diameter in the main pulley 29 is maximum, the gear ratio minimum of CVT15.

Below, with the detailed structure of explanation V-belt 31.As shown in Figures 4 and 5, V-belt 31 comprises a plurality of arrangements resin mass 56a in one direction, with a pair of link 57 that is used to be connected this resin mass 56a.In the following description, for convenience of explanation, can limit vertical (fore-and-aft direction) of resin mass 56a, horizontal (left and right directions) and Vertical direction (above-below direction) as follows.That is, vertically represent the orientation of resin mass 56a.Transverse side is represented resin mass 56a and

belt wheel

29 and 30 contacted.When V-belt 31 was wrapped on

belt wheel

29 and 30, the part that is positioned at the outside on the diametric(al) of

belt wheel

29 and 30 was called as top, and the part that is positioned at the inboard on the diametric(al) is called as the bottom.But limiting above-mentioned all directions is for convenience of explanation, rather than refers to the direction when using this V-belt.

To as shown in 6 (c), each resin mass 56a makes by the thin plate with less vertical width as Fig. 6 (a), and has two transverse sides 70, upper surface 71 and lower surface 72.As shown in Fig. 6 (b), the lateral length of resin mass 56a reduces to lower surface 72 from upper surface 71, and resin mass 56a forms corresponding to the trough of belt 38 of

belt wheel

29 and 30 and 52 V-arrangement.Groove 59 inwardly concaves at the vertical centre place of two transverse sides 70 of resin mass 56a.Groove 59 is used for link 57 is embedded wherein.Under the state of link 57 embedded resin piece 56a, groove 59 can not be exposed in the air.

On the other hand, in the upper surface 71 of resin mass 56a and lower surface 72, form and be exposed to airborne recess 81 and 82.

Recess

81 and 82 is formed centrally to resin mass 56a from two transverse sides, and is recessed into (seeing Fig. 6 (a)) in the

vertical.Recess

81 and 82 forms in the front and back of resin mass 56a respectively.Vertical width of the upper and lower of resin mass 56a reduces to the center gradually from two transverse sides.But

recess

81 and 82 is to form in the center rather than form on two transverse sides.Therefore, have only two transverse sides of resin mass 56a, that is, with the width of

belt wheel

29 and 30 contacted parts than the big width that does not form recess of other parts.

In addition, as shown in Fig. 6 (b),

recess

81 and 82 the vertical centers that are recessed to of two transverse sides from resin mass 56a.That is,

recess

81 and 82 longitudinally and vertically is recessed

into.Recess

81 and 82 cross sections at resin mass 56a inwardly concave in (perpendicular to the cross section of the orientation of resin mass 56a).In this embodiment, recessed degree increases to the center from two transverse sides of resin mass 56a, and

recess

81 and 82 is recessed at most in lateral centre.

As shown in Fig. 6 (c), the upper side end and the downside end that wherein form the resin mass 56a of

recess

81 and 82 are tapered towards these two ends.In the present embodiment, on the longitudinal cross-section that comprises recess 81 and 82 (vertical cross-section that is parallel to the orientation of resin mass 56a), the profile of the end of resin mass 56a becomes curve.The shape of this profile is not concrete to be limited, and preferably forms for example parabola of quadratic curve.The protruding terminus of resin mass 56a has curved surface.

Resin mass 56a comprises base material and the reinforcing material that is formed from a resin.Here, in resin mass 56a, comprise carbon fiber as this reinforcing material.The thermal conductivity of carbon fiber is better than the resin material as base material greatly.The effect of the carbon fiber that comprises among the resin mass 56a is the thermal conductivity that improves resin mass 56a, and as reinforcing material.Can improve the heat dissipation characteristics of resin mass 56a by the content that improves carbon fiber.Can be according to the intensity of the hope of resin mass 56a or the content that productivity is set carbon fiber rightly.

But, in the time can guaranteeing enough intensity, can omit this reinforcing material.Certainly, in base material, can comprise material except that reinforcing material.Various resin materials for example thermoplastic resin, thermosetting resin etc. can be used as this base material.The type of reinforcing material and except carbon fiber, also can suitably adopt glass fibre, aramide-fibre or analog without limits.For example, in this base material, except reinforcing material, also can comprise wear prevention agent or friction factor modifier.

Link 57 forms ring-type.As shown in Figure 4, link 57 extends in the orientation of resin mass 56a, and in the groove 59 of embedded resin piece 56a.Like this, by groove 59, can a plurality of resin mass 56a be interconnected by this link 57 with link 57 embedded resin piece 56a.Link 57 is made by rubber.The type that constitutes the rubber of link 57 is not specifically limited, and for example, most preferably uses to have superpower stable on heating rubber.As shown in Figure 5, a plurality of core that is used to strengthen 60 is imbedded in this rubber.

Resin mass 56a and link 57 be sulfuration integratedly not.But resin mass 56a and link 57 can vulcanize integratedly.

As previously described, in V-belt 31 according to the present invention, in the upside of resin mass 56a and downside, form respectively and be exposed to airborne recess 81 and 82.As a result, can enlarge the heat diffusion area of resin mass 56a.That is, enlarge the area of resin mass 56a ingress of air.Therefore, can improve the heat dispersion of resin mass 56a.

As schematically showing among Fig. 7, because in the front and back of each resin mass 56a, form recess 81 and 82 (not shown recess 82 among Fig. 7), so between adjacent resin mass 56a, form gap 83.As a result, along with advancing of V-belt 31, air flows into gap 83 (seeing the solid arrow among Fig. 7).Particularly, go up formation gap 83 at the direct of travel (this direct of travel is parallel to the orientation of resin mass 56a) of V-belt 31.Gap 83 forms along the front side of this direct of travel at each resin mass 56a.Therefore, because gap 83 is to form in the part that air flows easily, so along with the advancing of V-belt 31, air flows through the surface of resin mass 56a effectively, thereby further improves the heat dispersion of resin mass 56a.

When the revolution of

belt wheel

29 and 30 increases, from the heat increase of V-belt 31 dischargings.But according to present embodiment, the gait of march of V-belt 31 increases along with the increase of the revolution of

belt wheel

29 and 30, thereby the flow velocity that passes through the air in gap 83 increases.As a result, the increase of

belt wheel

29 and 30 revolution has improved the heat dispersion of resin mass 56a.Therefore, according to present embodiment, raise even under the situation of high speed transmission, still can prevent the temperature of V-belt 31.

In V-belt 31 according to the present invention, the upper side end and the downside end that comprise in the longitudinal section of each resin mass 56a of

recess

81 and 82 are tapered.As a result, gap 83 forms the shape that its end broadens towards this opening end, thereby introduces air easily.Therefore, can further improve the heat dispersion of V-belt 31.

In the V-belt 31 according to present embodiment, the profile of this end is a curve in the longitudinal section of each resin mass 56a.As a result, because air can flow into gap 83 reposefully along the curve of resin mass 56a.That is, the protruding terminus of each resin mass 56a has curved surface, and this protruding terminus is circular, so air can flow into gap 83 reposefully.Therefore, can more effectively realize heat radiation.

Recess

81 and 82 lateral centre at each resin mass 56a form.As a result, can cool off this center effectively, be trapped among each resin mass 56a in that this center heat is the easiest.

In V-belt 31 according to the present invention, because resin mass 56a has good heat dispersion, so heat is difficult to be trapped among the resin mass 56a.As a result, the temperature that can prevent resin mass 56a and link 57 raises too much.In addition, because improved the heat-resistant quality of V-belt 31, can improve the reliability of V-belt 31.

In V-belt 31 according to the present invention,

recess

81 and 82 is to form in the center of each resin mass 56a one side, rather than forms on two transverse sides.In other words,

recess

81 and 82 forms in the part except that two transverse sides of each resin mass 56a, and separates with two transverse sides 70.As a result, although

recess

81 and 82 are set, the area of the contact segment of sufficient to guarantee resin mass 56a and

belt wheel

29 and 30, thus can keep the intensity of this contact segment well.

In addition, in V-belt 31 according to the present invention,

recess

81 and 82 can not arrive link 57, but separates with link 57.In other words,

recess

81 and 82 does not embed interior formation of part of link 57 therein.As a result, although

recess

81 and 82 are set, the intensity of the anastomosis part of resin mass 56a and link 57 can not reduce a lot.The high strength that therefore, can keep resin mass 56a.

Comprise carbon fiber among the resin mass 56a of V-belt 31.As a result, the heat among the resin mass 56a can be delivered to the surface (particularly, having the recess 81 of high cooling effect and 82 surface) of resin mass 56a by carbon fiber, thereby further improves heat dispersion.In addition, because carbon fiber is used as reinforcing material, so although have

recess

81 and 82, but still can keep the high strength of resin mass 56a.

In the V-belt 31 according to present embodiment, the intensity of this resin mass 56a and heat dispersion can be in high level simultaneously.Therefore, can improve the durability of V-belt 31.

According to present embodiment, owing to can suppress V-belt 31 because of the heat release deterioration, so can improve the reliability of CVT 15.In addition, even owing to V-belt 31 when the high speed transmission also is not easy deterioration, so can enlarge the permission operating range of CVT15.The raising of the reliability of CVT15 has also improved the reliability of motorcycle 1.The expansion of the permission operating range of CVT15 has improved the degrees of freedom of designed engines 14.

Below, with the V-belt 31 of explanation according to other embodiments of the invention.In the following embodiments, V-belt 31 comprises a plurality of resin mass and a connection piece.Because this link is identical with first embodiment's link, so omission is to its explanation.After this, this resin mass mainly is described.Be denoted by like references with first embodiment's components identical, and omission is to its explanation.

Fig. 8 (a) illustrates resin mass 56b according to second embodiment's V-belt 31 to 8 (c).Similar with resin mass 56a according to first embodiment, form recess 81 at front and back, and form recess 82 at the front and back of the downside of resin mass 56b according to the upside of second embodiment's resin mass 56b.But the

recess

81 and 82 of resin mass 56b is recessed into stepped, thereby it is poor to form ladder in the border of

recess

81 and 82.

As shown in Fig. 8 (a), vertical width of resin mass 56b reduces to this stepped center from two lateral ends.Vertical constant width of recess 81.Shown in Fig. 8 (b), upside recess 81 towards the central vertical of resin mass 56b be recessed into.The vertical length of recess 81 is substantially whole transversely constant, and the base of recess 81 is parallel to the upper surface 71 of resin mass 56b.Downside recess 82 is also vertically recessed to the center of resin mass 56b.The vertical length of recess 82 is substantially whole transversely constant.Shown in Fig. 8 (c), the upside of resin mass 56b and the width of downside are less than the width of this vertical centre.

Therefore, as shown in Figure 9, in the V-belt 31 according to second embodiment, the heat diffusion area of resin mass 56b enlarges, and forms gap 83 between adjacent resin mass 56b.As a result, improved the heat dispersion of resin mass 56b, and prevented that heat is trapped among the resin mass 56b.Therefore, can suppress V-belt 31 because Sheng Re and deterioration.Fig. 9 is the longitudinal sectional view that comprises the V-belt 31 of

recess

81 and 82, has wherein saved the hatching mark in expression cross section.The all accompanying drawings in back all are like this.

Figure 10 (a) illustrates resin mass 56c according to the 3rd embodiment's V-belt 31 to 10 (c).In the front and back of the upside of this resin mass 56c, all form two along transversely arranged recess 81.In the front and back of downside, all form a recess 82.Similar with second embodiment, in according to the 3rd embodiment's resin mass this

recess

81 and 82 be recessed into stepped, thereby in each border of

recess

81 and 82, form ladder.

As shown in Figure 10 (a), vertical width of resin mass 56c becomes to reduce to the center from transverse side steppedly, and becomes to increase at the center steppedly.Vertical constant width of recess 81.As shown in Figure 10 (b), the recess 81 of upside is recessed downwards.The vertical length of recess 81 is substantially whole transversely constant, and the base of recess 81 is parallel to the end face 71 of resin mass 56c.Shown in Figure 10 (c), the upside of resin mass 56c and the width of downside are less than the width of this vertical centre.

Therefore, in the V-belt 31 according to the 3rd embodiment, the heat diffusion area of resin mass 56c enlarges, and forms the gap between adjacent resin mass 56c.As a result, improved the heat dispersion of resin mass 56c, thereby can suppress V-belt 31 because Sheng Re and deterioration.

Figure 11 (a) illustrates resin mass 56d according to the 4th embodiment's V-belt 31 to 11 (c).In resin mass 56d, in the front and back of upside, form recess 81, and in the front and back of downside, form recess 82 according to the 4th embodiment.In resin mass 56d, be formed centrally the recess 84 that connects upside recess 81 and downside recess 82.Both sides at recess 84 form the peripheral part 85 that approximate vertical is extended.In resin mass 56d according to the 4th embodiment because

recess

81,82 is connected mutual vertically with 84, so, form one do as a whole in resin mass 56d the recess of the vertically extending I of being roughly shape.Other similar is in the resin mass 56b according to second embodiment.

Therefore, in the V-belt 31 according to the 4th embodiment, the heat dispersion of resin mass 56d improves, thereby suppresses by giving birth to the deterioration that heat causes.In addition, in the 4th embodiment, because form recess 84, so can cool off the center of resin mass 56d effectively at the vertical centre place of each resin mass 56d.The easiest center that is trapped in resin mass 56d of heat.Therefore, according to the 4th embodiment, because directly cooling heat is trapped in wherein part easily, so can further improve the heat dispersion of resin mass 56d.Therefore, can further suppress V-belt 31 because Sheng Re and deterioration.

Figure 12 (a) illustrates resin mass 56e according to the 5th embodiment's V-belt 31 to 12 (c).Can obtain resin mass 56e by the peripheral part 85 of removing central recess 84 from resin mass 56d according to the 4th embodiment.Therefore, in the 5th embodiment, because directly cooling heat is trapped in wherein core easily, so can improve the heat dispersion of resin mass 56d.

In second to the 5th above-mentioned embodiment, resin mass 56b is to vertical constant width of upper side end and the downside end of 56d.But resin mass 56b to the shape of the end of 56d without limits.For example, resin mass 56b can form taper to the end of 56d.Below, explanation is wherein changed the embodiment of resin mass 56b to the end shape of 56d.

Figure 13 illustrates the V-belt 31 according to the 6th embodiment.In the 6th embodiment, splayed in the edge, front and back of the upper side end of resin mass 56e and downside end.That is, this end is a chamfer shape.As a result, in the 6th embodiment, the gap 83 that forms between adjacent resin mass 56e broadens towards opening end (in other words, the outlet side of air and suction side).

In V-belt 31, because the opening end in gap 83 broadens, so air enters gap 83 easily according to the 6th embodiment.As a result, can further improve the heat dispersion of resin mass 56e.

Figure 14 illustrates the V-belt 31 according to the 7th embodiment.In the 7th embodiment, splayed in the edge, front and back of the upper side end of resin mass 56f and downside end.But in the 7th embodiment, being shaped as from its longitudinal center position of this edge longitudinally excised.Therefore, the end of resin mass 56f is shaped as acutangulate wedge angle.

According to the 7th embodiment, because the opening end in gap 83 broadens, so air enters gap 83 easily.As a result, can improve the heat dispersion of resin mass 56f.

Figure 15 illustrates the V-belt 31 according to the 8th embodiment.In the 8th embodiment, the upper side end of resin mass 56g and the sectional shape of downside end are circular arc.As a result, the width in gap 83 changes continuously and lentamente.Therefore, because the area of the stream in the gap 83 can rapid change, so gap 83 can be introduced in air trim ground.Therefore, can improve the heat dispersion of resin mass 56g.

In the 6th to the 8th embodiment, have only resin mass 56e to have the tip that part narrows down to the end of 56f.But the entire portion from vertical centre to this end of resin mass can form has the tip that narrows down.Below, the embodiment that explanation is such, wherein the entire portion from the center to the end of resin mass forms and has the tip that slowly narrows down.

Figure 16 illustrates the V-belt 31 according to the 9th embodiment.In the 9th embodiment, the upper side end of resin mass 56h and downside end form the shape of being splayed to the entire portion of this end from the center.As a result, the width in gap 83 slowly broadens from the center to the end.Therefore, because air flows into gap 83 easily, so can improve the heat dispersion of resin mass 56h.

Figure 17 illustrates the V-belt 31 according to the tenth embodiment.Has the shape of further being cut chamfering according to the end of the 9th embodiment's resin mass 56h according to the tenth embodiment's resin mass 56i.In other words, resin mass 56i has the therefrom shape that narrows down of mind-set end portion two stages of this end.According to the tenth embodiment, because the import in gap 83 further broadens, so the easier inflow of air gap 83.Therefore, can improve the heat dispersion of resin mass 56i.

Figure 18 illustrates the V-belt 31 according to the 11 embodiment.According to being shaped as of the 11 embodiment's resin mass 56j, therefrom two stages of this end portion of mind-set narrow down in the end.But in the 11 embodiment, the end forms acutangulate angular shape.According to the 11 embodiment, because the import in gap 83 broadens, so the easier inflow of air gap 83.Therefore, can improve the heat dispersion of resin mass 56j.

Figure 19 illustrates the V-belt 31 according to the 12 embodiment.According to being shaped as of the 12 embodiment's resin mass 56k, its edge is cut into acutangulate angular shape from the center to the end.According to the 12 embodiment, because the import in gap 83 further broadens, so the easier inflow of air gap 83.Therefore, can improve the heat dispersion of resin mass 56k.

Figure 20 illustrates the V-belt 31 according to the 13 embodiment.In the 13 embodiment, change into the shape identical with first embodiment according to the sectional shape of second to the 5th embodiment's resin mass.That is, in the 13 embodiment, vertical width of resin mass 56l reduces from the center to the end reposefully.The profile of the end of resin mass 56l forms the convex curve towards the tip.According to the 13 embodiment, described in first embodiment, air can flow into gap 83 reposefully along the curved shape of resin mass 56l.As a result, because air flows into gap 83 easily, so can improve the heat dispersion of resin mass 56l.

As mentioned above,, can between adjacent resin mass, form the gap, so that this gap broadens to the end from the center of resin mass by in the longitudinal section of resin mass, from the center to the end, reducing the width of this resin mass continuously or steppedly.As a result, because air flows into the gap easily, so can improve the heat dispersion of resin mass effectively.

V-belt according to the present invention is not limited to the foregoing description, but can show as other form.In these embodiments, in all resin mass, all form recess 81 and 82.But, can only in a part of resin mass, form recess 81 and 82.That is, in a V-strapped part, wherein form recess 81 and can be connected by link with a plurality of resin mass of 82.Therefore, have the resin mass of

recess

81 and 82 by combination and do not have the V-belt that the resin mass of recess obtains and also belong to scope of the present invention.Have the resin mass of the recess of difformity and size by preparing multiple wherein formation, and make up these dissimilar resin mass, also can constitute V-belt 31.

For example, as shown in Figure 21, the resin mass 56n that has the first resin mass 56m of recess and do not have a recess can be arranged alternately on the length direction of link 57.This V-belt 31 can improve heat dispersion.In the V-belt that a plurality of therein resin mass interconnect usually, when link fluffs, in V-belt dither may take place.But, in above-mentioned V-belt, mix mutually with the resin mass 56n that does not have recess because have the resin mass 56m of recess, so can disperse resonant frequency.The vibration and the noise that therefore, can suppress V-belt 31.In addition, even when forming multiple resin mass with recess at diverse location, or combination still can reduce vibration and noise when having the various kinds of resin piece of recess of difformity of forming or size, and the V-belt 31 shown in this and Figure 21 is similar.

[industrial applicibility]

As mentioned above, the present invention is applicable to V-belt, has this V-strapped belt speed change gear, with And saddle-ride type vehicle.

[reference number]

1: motorcycle (saddle-ride type vehicle)

15: belt-type stepless speed control apparatus (belt speed change gear)

29: main pulley

30: inferior belt wheel

31:V shape band

38,52: the belt belt wheel

56a: resin mass

57: connector

70: the transverse side of resin mass

81,82: recess

Claims

1. V-belt comprises:

A plurality of resin mass of Pai Lieing in one direction; And

In the orientation of this resin mass, extend and embed in this resin mass connecting the cyclic adapting piece of this resin mass,

Wherein, be formed with recess in each resin mass, this recess is recessed on and separates with this link in the orientation of this resin mass.

2. V-belt comprises:

A plurality of resin mass of Pai Lieing in one direction, each resin mass is formed with groove at the vertical centre place of two transverse sides; And

In the orientation of this resin mass, extend and embed in the groove of this resin mass connecting the cyclic adapting piece of this resin mass,

Wherein, be formed with in the lateral centre of each resin mass and be exposed to airborne recess.

3. V-belt comprises:

Wherein, be formed with recess in each resin mass, this recess is exposed in the air and with two transverse sides of this resin mass to be separated.

4. V-belt comprises:

The a plurality of resin mass that comprise carbon fiber and arrange in one direction; And

Wherein, in each resin mass, be formed with and be exposed to airborne recess.

5. V-belt comprises:

Wherein, be formed with recess in the lateral centre of each resin mass, this recess is recessed on and separates with this link in the orientation of this resin mass.

6. V-belt comprises:

Wherein, be formed with recess in each resin mass, this recess is recessed on and separates with two transverse sides of this link and this resin mass in the orientation of this resin mass.

7. V-belt comprises:

8. V-belt comprises:

A plurality of resin mass of Pai Lieing in one direction, each resin mass is formed with groove at the vertical centre place of two transverse side; And

Wherein, be formed with recess in the lateral centre of each resin mass, this recess is exposed in the air and with two transverse sides of this resin mass to be separated.

9. V-belt comprises:

The a plurality of resin mass that comprise carbon fiber and arrange in one direction, each resin mass is formed with groove at the vertical centre place of two transverse side; And

Wherein, be formed with recess in the lateral centre of each resin mass, this recess is exposed in the air.

10. V-belt comprises:

Wherein, be formed with recess in each resin mass, two transverse sides of this recess and this resin mass are spaced apart and be exposed in the air.

11. any one the V-belt according among claim 2-4 and the 8-10 is characterized in that this recess is recessed in the orientation of this resin mass.

12. any one the V-belt according among the claim 1-10 is characterized in that, a side or two the sides place of this recess in the orientation of this resin mass forms.

13. any one the V-belt according in the claim 1,4 and 7 is characterized in that each resin mass has two transverse sides, and this recess forms in central part rather than two lateral sides of each resin mass.

14. any one the V-belt according among the claim 1-10 is characterized in that, this recess inwardly concaves in the vertical cross-section perpendicular to the orientation of each resin mass.

15. the V-belt according to claim 14 is characterized in that, the lateral centre of this recess in the vertical cross-section of each resin mass is recessed maximum.

16. the V-belt according to claim 14 is characterized in that, this recess vertically penetrates the vertical cross-section of each resin mass.

17. according to any one the V-belt among the claim 1-10, it is characterized in that, in the vertical longitudinal cross-section of the orientation that is parallel to this resin mass, the upper side end of each resin mass and at least one end in the downside end are at vertical centre the width on orientation of the width in the orientation less than each resin mass, and the end of each resin mass constitutes at least a portion of this recess.

18. the V-belt according to claim 17 is characterized in that, the protruding terminus of the end of each resin mass has curved surface.

19. the V-belt according to claim 17 is characterized in that, in the longitudinal cross-section of each resin mass, the width of each resin mass in orientation this end of mind-set from this reduces continuously or steppedly.

20. the V-belt according to claim 19 is characterized in that, in the longitudinal cross-section of each resin mass, the profile of each resin mass from this center to this end forms the curve that protrudes towards this end.

21. according to any one the V-belt in the claim 1,4 and 7, it is characterized in that, vertical centre place at two transverse sides of each resin mass forms the groove that inwardly concaves, this link embeds in this groove, and this recess forms at the upside of each resin mass and at least one side in the downside.

22. according to claim 2,3,5,6 and 8-10 in any one V-belt, it is characterized in that this recess forms at the upside of each resin mass and at least one side in the downside.

23. according to any one the V-belt among the claim 1-10, it is characterized in that, this V-belt comprises resin mass with this recess and the resin mass that does not have this recess, and the resin mass that does not wherein have this recess is connected by this link with the resin mass with this recess.

24. according to any one the V-belt among the claim 1-10, it is characterized in that, this V-belt comprises resin mass with this recess and the resin mass with recess different with this recess, and the resin mass that wherein has the recess different with this recess is connected by this link with the resin mass with this recess.

25. a belt speed change gear comprises:

The main pulley of the variable-width of trough of belt wherein;

The inferior belt wheel of the variable-width of trough of belt wherein; And

According in the claim 1 to 10 any one be wrapped in V-belt on this main pulley and time belt wheel.

26. saddle-ride type vehicle that has according to the belt speed change gear of claim 25.