JP2001227594A - Built-up v-belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the relative rotation in which flat elements of a straight portion on the pressed side of a belt in an inwardly curved condition are not aligned in the belt traveling direction. SOLUTION: The flat element 11 comprises a V-shaped body portion 13 having inclined side surfaces 13a and 13b in friction-contact with a V-shaped groove of a pulley, a neck portion 14, and a triangular head portion 15 which are integratedly coupled with each other the flat elements 11 are continuously disposed in an endless manner, and an endless laminated band 12 is stretched over a slit portion 16 formed by the triangular head portion 15 of the flat element and the V-shaped body portion 13 to build up the built-up V-belt. A portion X1 in the vicinity of a top of the triangular head portion 15 between a top 15e of the triangular head portion 15 and the line 15f parallel to the slit portion 16 separated by a predetermined distance toward the V-shaped body portion 13 is recessed to form a recess 15g in the vicinity of the top. Even when the pressed side straight portion of the V-belt is inwardly curved, and the flat elements 11 have a corresponding relative angle, the flat elements are brought into contact with each other in a predetermined area y1 appearing symmetric in the width direction of the flat elements along a stepped portion 15f.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved proposal of an assembled V-belt useful for a V-belt type continuously variable transmission and the like.

[0002]

2. Description of the Related Art Conventionally, as this kind of assembling type V belt,
For example, it is disclosed in JP-A-5-187484,
There are those shown in FIGS. This assembly type V
The belt 10 is, for example, put between an input pulley 1 and an output pulley 2 having a variable V-groove width as shown in FIG. 1 for practical use, and transmits the rotation of the input pulley 1, for example, in a direction indicated by an arrow α to the output pulley 2. This is used for rotational driving in the direction of arrow β. By changing the V-groove widths of the input and output pulleys 1 and 2 synchronously and in phase during the transmission, the winding arc diameter of the assembled V-belt 10 with respect to the input and output pulleys 1 and 2 changes continuously. , Continuously variable transmission is possible.

The assembling type V-belt 10 comprises a number of flat elements 11 and an endless laminated band 12 hung on the flat elements 11 as follows. As shown in FIG. 2, each flat plate element 11 has an input / output pulley 1,
Opposing conical surfaces 1a, 2a forming two pulley V-grooves (FIG. 1)
Inclined side surfaces 13a, 13b that are in frictional contact with
As shown in FIG. 2B, a flat V-shaped main body 13 having a substantially V-shape as shown in FIG. The neck 14,
As shown in FIG. 2 (b), when viewed in the belt running direction, it is integrally formed with a flat triangular head 15 provided at the tip of the neck portion 14 so as to form a substantially triangular shape.

A large number of the above-described flat plate elements 11 are shown in FIG.
As shown in FIG.
As shown in (b), the triangular head 15 and the V-shaped main body 13
1 and 2, the above-mentioned endless laminated band 12 is applied to the slit portions 16 formed as described above to assemble the assembled V-belt 10. In order to maintain the endless continuous arrangement shape of the plate element 11 in the assembled state of the assembling type V-belt 10, FIG.
As shown in (a), a protrusion 15b is provided on the front surface 15a of the triangular head 15 in the belt running direction, and a protrusion 15b of the succeeding flat plate element 11 (triangular head 15) is provided on the rear surface 15c of the triangular head 15 in the belt running direction. A hole 15d for fitting is provided,
These projections 15b and holes 15d are arranged near the apex 15e of the triangular head 15.

As shown in FIG. 2 (a), an inclined surface 13e is set on the front surface 13d of the V-shaped main body 13 in the belt running direction, and the locking edge 1 is located on the starting line of the inclined surface 13e.
3f, the adjacent flat plate element 11 is relatively tilted about the rocking edge 13f as a tilting center, so that the assembled V-belt 10 can be wound around the input / output pulleys 1 and 2 as shown in FIG. To

In the assembled V-belt 10 having such a structure, the transmission from the input pulley 1 to the output pulley 2 is performed by pressing the adjacent flat plate elements 11 between each other. The flat plate elements 11 that are adjacent to each other in the pressing-side straight line portion (the upper straight line portion in FIG. 1) among the straight line portions in FIG. 1 originally have the preceding flat plate element 11 (triangular head 15) as shown in FIG. 1 and FIG. ), The rear surface 15c and the front surface 15a of the succeeding flat plate element 11 (triangular head 15) come into contact with each other, and are stuck straight into the V groove of the output pulley 2 while keeping the alignment state in the belt running direction stable. It is.

[0007]

However, in the assembly type V-belt 10 having the above-described transmission configuration, the pressing-side linear portion between the input and output pulleys 1 and 2 is, for example, a position indicated by a solid line in FIG. In some cases, string vibration may occur between the positions indicated by the arrow and when the linear portion on the pressing side of the assembling V-belt 10 is curved inward as shown by the solid line in FIG. Since the thickness of the triangular head 15 was made the same as a whole as shown in FIG. 2A, there was a concern that the following problem might occur.

That is, in this inwardly curved state, the adjacent flat plate elements 11 in the pressing-side linear portion of the assembling type V-belt 10 have a relative angle as shown in FIG. Triangle head 1
5) The rear surface 15c and the front surface 15a of the succeeding flat plate element 11 (triangular head 15) are locally contacted at a point y of a vertex 15e of the triangular head 15 as shown in FIG. ). For this reason, the adjacent flat plate elements 11 in the pressing-side linear portion of the assembling type V-belt 10 may relatively rotate around the vertex 15e (contact point y) of the triangular head 15, and in this case, the pressing-side straight line The flat plate element 11 in the portion cannot maintain the alignment in the belt running direction.

The flat plate element 11 in the misaligned state is pushed by the following flat plate element 11 and the output pulley 2
Of the flat plate element 11, the inclined side surfaces 13a and 13b of the V-shaped main body 13 of the flat plate element 11 collide with the opposing conical surface 2a forming the pulley V groove of the output pulley 2, and the flat plate element 11 is damaged. , The durability of the assembled V-belt 10 is reduced, and vibration and noise are increased.

According to the first aspect of the present invention, the thickness of the triangular head of the flat plate element in the vicinity of the top is made smaller than the thickness of the remaining portion, so that the pressing-side linear portion of the assemblable V-belt is curved inward. Even in the state, the flat plate elements in the pressing-side linear portion are prevented from hitting each other at the apex of the triangular head, thereby solving the problem relating to the misalignment of the flat plate elements in the conventional assembled V-belt. The purpose is to realize.

A second aspect of the present invention is to provide a preferable structure which can be adopted when the plate thickness near the top of the triangular head of the flat element is made smaller than the remaining plate thickness as described above. Aim.

According to a third aspect of the present invention, there is provided another preferred structure which can be adopted when the plate thickness near the top of the triangular head of the flat plate element is made smaller than the remaining plate thickness as in the first invention. The purpose is to provide.

According to a fourth aspect of the present invention, there is provided another preferred structure which can be employed when the plate thickness near the top of the triangular head of the flat element is made smaller than the remaining plate thickness as in the first invention. The purpose is to provide.

According to a fifth aspect of the present invention, the triangular head of the flat plate element has a shape in which the apex itself causing the above problem does not exist, so that the conventional assembly type V can be used.
It is an object of the invention to achieve a solution to the above problems relating to misalignment of the flat elements in the belt.

[0015]

To achieve these objects, the assembly type V-belt according to the first invention has a substantially V-shaped flat plate having inclined side surfaces that frictionally contact the opposing conical surfaces of the pulley V-grooves. A V-shaped main body, a neck protruding midway on the outer surface of the V-shaped main body radially outward of the pulley, and provided at the tip of the neck so as to form a substantially triangle when viewed in the belt running direction. A large number of flat elements that are integrally connected to the flat triangular head are continuously arranged in a non-terminal shape, and are formed by a triangular head and a V-shaped main body on both sides of the neck of the flat element. In the assembling type V-belt configured by applying an endless laminated band to each of the slit portions, the plate thickness near the top of the triangular head far from the V-shaped main body is made thinner than the remaining plate thickness of the triangular head. Also characterized by It is.

The assembled V-belt according to the second aspect of the present invention is the above-mentioned first aspect, wherein the apex of the triangular head and a line parallel to the slit and separated from the apex by a predetermined distance toward the V-shaped main body. The thickness near the top of the triangular head is made thinner than the remaining thickness of the triangular head by recessing the vicinity of the top of the triangular head from the rest at least one of the front surface and the rear surface in the belt running direction. It is characterized by having done.

According to a third aspect of the present invention, there is provided the assembled V-belt according to the first aspect, wherein a vertex of the triangular head and a line parallel to the slit and separated from the vertex by a predetermined distance toward the V-shaped main body. In the vicinity of the top of the triangular head between at least one of the front surface and the rear surface in the belt running direction, an inclined surface or a curved surface such that the plate thickness near the top of the triangular head gradually decreases toward the apex of the triangular head. It is characterized by having done.

According to a fourth aspect of the present invention, there is provided the assembled V-belt according to the first aspect, having a predetermined width including a vertex of the triangular head.
A plate near the top of the triangular head is recessed in at least one of the front surface and the rear surface in the belt running direction from the rest, in a region from the vertex to the predetermined distance in the V-shaped main body portion direction. The thickness is made thinner than the remaining plate thickness of the triangular head.

According to a fifth aspect of the present invention, there is provided an assembling type V-belt having a substantially V-shaped flat V-shaped main body having inclined side surfaces which frictionally contact opposing conical surfaces of a pulley V-groove, respectively. And a flat triangular head provided at the tip of the neck so as to form a substantially triangular shape as viewed in the belt running direction. A large number of flat elements are continuously arranged in a non-terminal shape, and a non-terminal laminated band is applied to a slit formed by a triangular head and a V-shaped main body on both sides of the neck of the flat elements. In the assembled V-belt described above, the apex of the triangular head is removed to form a top of the triangular head on a flat surface parallel to the slit.

[0020]

According to the first aspect of the present invention, the plate thickness near the top of the triangular head remote from the V-shaped main body is made thinner than the remaining plate thickness of the triangular head. Even if the flat plate elements adjacent to each other on the pressing-side linear portion have a corresponding relative angle due to the inside curved state, these flat plate elements are locally contacted at the apex of the triangular head (per point). ), And these flat elements come into contact with each other in a relatively wide area that appears symmetrically in the width direction of the flat elements. For this reason, the flat plate elements adjacent to each other on the press-side linear portion in the curved inner side of the assembled V-belt do not rotate relative to each other so as to be misaligned with each other in the belt traveling direction. Conventionally generated due to misalignment of the plate element in the belt running direction, since it is bitten in the V groove of the output pulley in an aligned state and does not collide with the opposed conical surface forming the V groove of the output pulley. The above-mentioned problems relating to noise and durability can be solved.

In the second invention, the vicinity of the apex of the triangular head between a vertex of the triangular head and a line parallel to the slit portion and separated from the vertex by a predetermined distance toward the V-shaped main body portion, By depressing at least one of the front surface and the rear surface in the belt running direction from the rest, the plate thickness near the top of the triangular head is made thinner than the remaining plate thickness of the triangular head. Is in an inwardly curved state so that adjacent flat plate elements in the pressing-side linear portion have a corresponding relative angle, these flat plate elements locally contact each other at the apex of the triangular head (point ), And these flat plate elements are separated from each other by the step that appears along the line between the vicinity of the top of the depressed triangular head and the rest of the triangular head as described above. Contact with each other at a certain width at.
For this reason, the flat plate elements adjacent to each other on the press-side linear portion in the curved inner side of the assembled V-belt do not rotate relative to each other so as to be misaligned with each other in the belt traveling direction. Conventionally caused by misalignment of the plate element in the belt running direction, since it is bitten in the V-groove of the output pulley in an aligned state and does not collide with the opposed conical surface forming the V-groove of the output pulley. The above-mentioned problems relating to noise and durability can be solved.

In a third aspect of the present invention, the apex of the triangular head is separated from the apex by a predetermined distance toward the V-shaped main body.
In the vicinity of the top of the triangle head between the line parallel to the slit portion and at least one of the front surface and the rear surface in the belt running direction, the thickness near the top of the triangle head gradually decreases toward the top of the triangle head. In the case where the pressing-side linear portion of the assembling-type V-belt is curved inward due to such an inclined surface or a curved surface, adjacent flat plate elements in the pressing-side linear portion have a corresponding relative angle. However, these flat plate elements do not locally contact (per point) at the apex of the triangular head, and these flat plate elements appear along the above-mentioned line which is also the start line of the inclined surface or the curved surface. Contact each other in an area of a certain width. For this reason, the flat plate elements adjacent to each other on the press-side linear portion in the curved inner side of the assembled V-belt do not rotate relative to each other so as to be misaligned with each other in the belt traveling direction. It is bitten in the V groove of the output pulley in an aligned state,
To solve the above-mentioned problems relating to noise and durability which have conventionally occurred due to misalignment of the flat plate element in the belt running direction since the output pulley does not collide with the opposed conical surface forming the pulley V groove. Can be.

In a fourth aspect of the present invention, the vicinity of the top of the triangular head in a region having a predetermined width including the vertex of the triangular head and a predetermined distance from the vertex in the direction of the V-shaped main body portion is defined as a front surface and a rear surface in a belt running direction. In at least one of the above, the plate thickness near the top of the triangular head is made thinner than the remaining plate thickness of the triangular head by recessing the triangular head, so that the pressing-side linear portion of the assemblable V-belt is curved inward. Therefore, even when adjacent flat plate elements in the pressing-side linear portion have a corresponding relative angle, these flat plate elements are not locally contacted (per point) at the vertex of the triangular head. These flat plate elements are in contact with each other in regions of a certain width appearing on both sides in the width direction of the pulley V-groove with the vicinity of the top of the depressed triangular head interposed therebetween. For this reason, the flat plate elements adjacent to each other on the press-side linear portion in the curved inner side of the assembled V-belt do not rotate relative to each other so as to be misaligned with each other in the belt traveling direction. Conventionally caused by misalignment of the plate element in the belt running direction, since it is bitten in the V-groove of the output pulley in an aligned state and does not collide with the opposed conical surface forming the V-groove of the output pulley. The above-mentioned problems relating to noise and durability can be solved.

In the fifth aspect of the present invention, since the apex of the triangular head is removed to form the top of the triangular head on a flat surface parallel to the slit, the pressing-side linear portion of the assembling V-belt is curved inward. In the state, when the adjacent flat plate elements in the pressing-side linear portion have the corresponding relative angles, these flat plate elements are likely to locally contact with each other at the apex of the triangular head. However, since the apex of the triangular head does not exist, the local contact (per point) does not occur,
These flat elements contact each other in a region of a certain width appearing along the flat top surface of the triangular head. For this reason, the flat plate elements adjacent to each other on the press-side linear portion in the curved inner side of the assembled V-belt do not rotate relative to each other so as to be misaligned with each other in the belt traveling direction. The pulley V of the output pulley is bitten into the V groove of the output pulley in an aligned state.
Since there is no collision with the opposing conical surface forming the groove, the above-mentioned problems relating to noise and durability conventionally caused due to the misalignment of the flat plate elements in the belt running direction can be solved.

[0025]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 5A and 5B show an assembled V-belt according to an embodiment of the present invention, which has basically the same configuration as the conventional V-belt shown in FIGS. 2A and 2B. Therefore, the same parts as those in FIGS. 2A and 2B are denoted by the same reference numerals. In the present embodiment, the flat plate element 11 is connected to the opposing conical surface 1a of the pulley V-groove.
2a (see FIG. 1) inclined side surfaces 13 that are in frictional contact with each other
a, V-shaped main body 1 having a substantially V-shape having a and 13b
3, a neck portion 14 protruding in the middle of the outer surface 13c of the V-shaped main body portion 13 on the outer side in the pulley radial direction, and a flat plate provided at the tip of the neck portion 14 so as to form a substantially triangle when viewed in the belt running direction. And a plurality of such flat elements 11 are continuously arranged in an endless shape, and the triangular head 15 and the V-shaped main body 13 on both sides of the neck 14 of the flat elements 11 are formed. The endless laminated band 12 is hung on each of the slit portions 16 formed by the above-mentioned steps to assemble the assembling type V belt.

Here, in the present embodiment, in particular, between the apex 15e of the triangular head 15 and a line 15f parallel to the slit 16 and spaced a predetermined distance from the apex 15e toward the V-shaped main body 13. Area X1 near the top of the triangular head 15
To the belt running direction rear surface 15c (belt running direction front surface 1).
5a or, of course, both the front surface 15a and the rear surface 15c).
By forming a recess 15g near the top in the V-shaped main body 1
The thickness of the area X1 near the top of the triangular head 15 far from 3 is smaller than the thickness of the remaining portion of the triangular head 15. Therefore, the above line 1
5f denotes a step portion formed between the recess 15g near the top of the triangular head 15 and the remaining thick portion.

The V-shaped main body 1 is set by setting the recess 15g.
In the assembly type V-belt using the flat plate element 11 in which the plate thickness in the region X1 near the top of the triangle head 15 far from 3 is smaller than the remaining thickness of the triangle head 15, the pressing-side linear portion of the assembly V-belt When the flat plate elements 11 adjacent to each other on the pressing-side linear portion have the relative angle described above with reference to FIG. 4A in the inside curved state, the flat plate elements 11 are connected to each other as shown in FIG.
As shown in the figure, the two contact each other in the predetermined width region y1 which appears symmetrically in the width direction of the flat plate element 11 along the above-mentioned step portion 15f, and the vertex 15
In e, there is no local contact (per point).

For this reason, relative rotation is performed so that the adjacent flat plate elements 11 in the inwardly curved pressing-side linear portion of the assembled V-belt are mutually misaligned around the vertex 15e in the belt running direction. Is gone,
These plate elements 11 are engaged in the V-groove of the output pulley in an aligned state, and do not collide with the opposing conical surface forming the V-groove of the output pulley. Therefore, the above-mentioned problems relating to noise and durability conventionally caused due to misalignment of the flat plate element 11 in the belt running direction can be solved.

FIGS. 6A and 6B show an assembled V-belt according to another embodiment of the present invention. In this embodiment, the vicinity of the top of the triangular head 15 far from the V-shaped main body 13 is shown. The following configuration is adopted when making the plate thickness at the time of the third step smaller than the remaining plate thickness of the triangular head 15. That is, an area X2 near the top of the triangular head 15 between the vertex 15e of the triangular head 15 and a line 15h parallel to the slit 16 and separated from the vertex 15e by a predetermined distance toward the V-shaped main body 13 is defined as a belt. Rear surface 15c in the traveling direction (the front surface 15a in the belt traveling direction may be used, or both the front surface 15a and the rear surface 15c may be used).
, The thickness of the region near the top X2 of the triangular head 15 is gradually reduced toward the vertex 15e of the triangular head 15.
i (may be a curved surface).

The flat plate element 11 (triangular head 1)
According to the configuration 5), the pressing-side linear portion of the assembling-type V-belt is in an inwardly curved state, and the adjacent flat plate elements 11 in the pressing-side linear portion have the relative angle described above with reference to FIG. In this case, the plate elements 11 have a predetermined width that appears symmetrically in the width direction of the plate element 11 along the start line 15h of the inclined surface (curved surface) 15i as shown in FIG. The contacts come into contact with each other in the region y2, and the contact (per point) does not occur locally at the vertex 15e of the triangular head 15 as in the related art.

For this reason, also in the present embodiment, the adjacent flat plate elements 11 in the press-side linear portion in the inwardly curved state of the assembled V-belt are mutually misaligned around the vertex 15e in the belt running direction. Such a relative rotation is not performed, and the plate elements 11 are engaged in the V-groove of the output pulley in an aligned state, and do not collide with the opposed conical surface forming the V-groove of the output pulley. Therefore, the above-mentioned problems relating to noise and durability conventionally caused due to misalignment of the flat plate element 11 in the belt running direction can be solved.

FIGS. 7A and 7B show an assembled V-belt according to still another embodiment of the present invention. In this embodiment, the V-belt has a predetermined width including the apex 15e of the triangular head 15. FIG. ,
The vicinity of the top of the triangular head 15 in a region X3 from the apex 15e to the V-shaped main body 13 in a predetermined distance is defined as a rear surface 15c in the belt traveling direction (the front surface 15a in the belt traveling direction, or of course, both the front surface 15a and the rear surface 15c). May be)
In the triangle head 15, a depression 15 j near the top is provided in the triangle head 15 by making the thickness of the region X3 near the top of the triangle head 15 thinner than the rest of the triangle head 15.

The flat plate element 11 (triangular head 1)
According to the configuration 5), the pressing-side linear portion of the assembling-type V-belt is in an inwardly curved state, and the adjacent flat plate elements 11 in the pressing-side linear portion have the relative angle described above with reference to FIG. In this case, the flat plate elements 11 come into contact with each other in a predetermined width region y3 that appears on both sides in the width direction of the pulley V-groove with the recess 15j near the top as shown in FIG. 7B. In addition, local contact (point contact) at the vertex 15e of the triangular head 15 unlike the related art is eliminated.

For this reason, also in the present embodiment, the adjacent flat plate elements 11 in the inwardly curved pressing-side linear portion of the assembled V-belt are mutually misaligned around the vertex 15e in the belt running direction. Such a relative rotation is not performed, and the plate elements 11 are engaged in the V-groove of the output pulley in an aligned state, and do not collide with the opposed conical surface forming the V-groove of the output pulley. Therefore, the above-mentioned problems relating to noise and durability conventionally caused due to misalignment of the flat plate element 11 in the belt running direction can be solved.

FIGS. 8A and 8B show an assembled V-belt according to still another embodiment of the present invention. In this embodiment, a triangle indicated by a two-dot chain line in FIG. The top 15 k of the triangular head 15 is formed on a flat surface parallel to the slit 16 by removing the apex 15 e of the head 15.

The flat plate element 11 (triangular head 1)
According to the configuration 5), the pressing-side linear portion of the assembling-type V-belt is in an inwardly curved state, and the adjacent flat plate elements 11 in the pressing-side linear portion have the relative angle described above with reference to FIG. In this case, the plate elements 11 come into contact with each other in a predetermined width region y4 that appears symmetrically in the width direction of the plate element 11 along the top flat surface 15k as shown in FIG. 8B. As a result, local contact (per point) at the vertex 15e of the triangular head 15 unlike the related art is eliminated.

For this reason, also in the present embodiment, the adjacent flat plate elements 11 in the press-side linear portion in the curved inner side of the assembled V-belt are mutually misaligned around the vertex 15e in the belt running direction. Such a relative rotation is not performed, and the plate elements 11 are engaged in the V-groove of the output pulley in an aligned state, and do not collide with the opposed conical surface forming the V-groove of the output pulley. Therefore, the above-mentioned problems relating to noise and durability conventionally caused due to misalignment of the flat plate element 11 in the belt running direction can be solved.

[Brief description of the drawings]

FIG. 1 is a side view showing a conventional assembling V-belt stretched between input and output pulleys.

FIG. 2 shows details of the assembled V-belt.
FIG. 2B is a partially cutaway side view, and FIG.

FIG. 3 is a side view showing the conventional assembled V-belt shown in FIG. 1 in a state where power is transmitted between input and output pulleys.

4A and 4B show details of the assembling V-belt during a power transmission operation, and FIG.
(B) is a front view of a flat element.

5A and 5B show details of an assembled V-belt according to an embodiment of the present invention, in which FIG.
Is a longitudinal sectional front view thereof.

6A and 6B show details of an assembled V-belt according to another embodiment of the present invention, and FIG.
(B) is the longitudinal front view.

FIG. 7 is a sectional view illustrating a prefabricated type V according to still another embodiment of the present invention.
The details of the belt are shown, (a) is a partially broken side view thereof,
(B) is the longitudinal front view.

FIG. 8 is an assembled type V according to still another embodiment of the present invention.
The details of the belt are shown, (a) is a partially broken side view thereof,
(B) is the longitudinal front view.

[Explanation of symbols]

 Reference Signs List 1 input pulley 2 output pulley 10 assembling type V belt 11 flat element 12 endless laminated band 13 V-shaped main body 13a inclined side 13b inclined side 13c outer side 13d belt running direction front 13e inclined surface 13f locking edge 14 neck 15 triangular head 15a Front side in belt running direction 15b Protrusion 15c Rear side in belt running direction 15d Hole 15e Apex 15f Boundary line (step) 15g Top near depression 15h Boundary 15i Inclined surface (curved surface) 15j Top near depression 15k Flat top surface 16 Slit y1 Flat plate Contact area between elements y2 Contact area between plate elements y3 Contact area between plate elements y4 Contact area between plate elements

Claims (5)

[Claims] 1. A substantially V-shaped flat V-shaped body having inclined side surfaces that frictionally contact opposing conical surfaces of a pulley V-groove, respectively, and an outer surface of the V-shaped body in a radially outward direction of the pulley. A large number of plate elements which are integrally connected to a neck protruding in the middle of the side surface and a plate-shaped triangular head provided at the tip of the neck so as to form a substantially triangle when viewed in the belt running direction, endless In an assembling type V-belt, which is continuously arranged in a shape, and a non-terminal laminated band is applied to a slit formed by a triangular head and a V-shaped main body on both sides of the neck of the flat element, respectively. An assembly-type V-belt, characterized in that a plate thickness near the top of the triangular head remote from the V-shaped main body is made thinner than the remaining plate thickness of the triangular head. 2. The method according to claim 1, wherein a vertex of the triangular head is separated from the vertex by a predetermined distance toward the V-shaped main body.
The plate thickness near the top of the triangular head is reduced by depressing the vicinity of the top of the triangular head between the line parallel to the slit portion and the rest on at least one of the front surface and the rear surface in the belt running direction. An assembling type V-belt characterized in that the thickness of the remaining portion is smaller than the thickness of the remaining portion. 3. The method according to claim 1, wherein a vertex of the triangular head is separated from the vertex by a predetermined distance toward the V-shaped main body.
In the vicinity of the top of the triangle head between the line parallel to the slit portion and at least one of the front surface and the rear surface in the belt running direction, the thickness near the top of the triangle head gradually decreases toward the top of the triangle head. An assembling type V-belt having an inclined surface or a curved surface as described above. 4. The belt according to claim 1, wherein the vicinity of the top of the triangular head in a region having a predetermined width including the vertex of the triangular head and a predetermined distance from the vertex to the V-shaped main body portion is defined as An assembly-type V-belt, characterized in that at least one of the rear surfaces is recessed from the remaining portion so that the plate thickness near the top of the triangular head is smaller than the remaining plate thickness of the triangular head. 5. A flat V-shaped main body having a substantially V-shape having inclined side surfaces that frictionally contact opposing conical surfaces of a pulley V-groove, respectively, and an outer surface of the V-shaped main body in a radially outward direction of the pulley. A large number of plate elements which are integrally connected to a neck protruding in the middle of the side surface and a plate-shaped triangular head provided at the tip of the neck so as to form a substantially triangle when viewed in the belt running direction, endless In an assembling type V-belt, which is continuously arranged in a shape, and a non-terminal laminated band is applied to a slit formed by a triangular head and a V-shaped main body on both sides of the neck of the flat element, respectively. An assembly-type V-belt, wherein a vertex of a triangular head is removed to form a top of the triangular head on a flat surface parallel to the slit.