JPH06300090A - Chain belt - Google Patents

Abstract

PURPOSE: To provide a chain belt in which abrasion and power loss of a pin and a position regulating member can be restrained. CONSTITUTION: In this chain belt 10, the relative position in the longitudinal direction of a first chain 40 and a second chain 42 can be regulated by a pin receiving hole 52 and a second circular arc pin 48 extended to the other chain side. In here, a first link plate 34 functioning as a position regulating member is engaged only with the second circular-arc pin 48 of a locker pin 36 in pin fitting holes 50, 51, so that when a pair of pins are relatively rolled on the mutual outer peripheral surfaces with curving of the chain belt 10, the relative slippage between a locker pin 38 and the first link plate 34 can be prevented, whereby abrasion and driving loss of the locker pin 38 and the first link plate 34 can be favorably restrained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a chain belt wound between V pulleys for transmitting power.

[0002]

2. Description of the Related Art A type of endless annular chain belt wound between V pulleys for transmitting power is connected to a pair of first and second pins which are mutually rollable at their rear surfaces. At least a pair of endless rings each including a pin and a plurality of link plates that are connected in the longitudinal direction in a state that a plurality of the connecting pins are stacked in the thickness direction by fitting the connecting pins in the fitting holes provided in both ends. It is known that chains are juxtaposed in a state of being displaced from each other by a half pitch and each of which has a large number of belt blocks having a size corresponding to the width of the juxtaposed state on the inner peripheral side. For example, the one described in Japanese Utility Model Publication No. 63-136747 is an example. In such a chain belt, in one chain, the connecting pins, that is, the tips of a pair of pins forming the rocker pin are projected toward the other chain side in the width direction of the chain belt, and the pair of pins is formed. An annular position regulating member is fitted to the tip portion, and the relative positions of the first chain and the second chain in the longitudinal direction are regulated by the contact between the position regulating member and the connecting pin of the other chain. It has become.

[0003]

However, in the chain belt of the above-mentioned type, since the position regulating member is adapted to be fitted with a pair of pins constituting the connecting pin, the chain belt is not bent. When the pair of pins relatively rolls on their outer peripheral surfaces in association with each other, relative slippage occurs between the pin and the position restricting member, promoting wear of the pin and the position restricting member and driving There was a drawback that the loss was large.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a chain belt in which wear and power loss of pins and position regulating members are suitably suppressed. .

[0005]

The gist of the present invention for achieving such an object is to provide a connecting pin composed of a pair of first and second pins which are mutually rollable on their back surfaces. , The linking pins are fitted in the fitting holes provided at both ends, so that a plurality of link plates are connected in the longitudinal direction in a state where a plurality of sheets are stacked in the thickness direction, and the fitting plates are fitted in the fitting holes. At least a pair of endless annular chains in which one of the inserted first pin and the second pin located on the end side of the link plate is non-rotatably fitted with respect to the link plate are mutually half-pitch. In a chain belt having a plurality of belt blocks that are arranged side by side in a shifted state and have a size corresponding to the width dimension of the parallel state on the inner peripheral side, the pair of endless annular chains Only one of the pin positioned on the end of the link plate facing the other chain of the pair of first and second pins at one to extend through the link plate to the other side of the chain of and,
The link plate facing the other chain of the other chain is provided with a position regulating hole that receives the distal end portion of the extended pin and prevents relative movement in the longitudinal direction of the pair of endless annular chains. .

[0006]

In such a chain belt, in one of the pair of endless annular chains, one of the pair of the first pin and the second pin located on the end side of the link plate facing the other chain. Only extends to the other chain side through its link plate,
In addition, the link plate of the other chain, which faces one of the chains, receives the tips of the pins extending from the link plate of the other chain to prevent relative movement in the longitudinal direction of the pair of endless annular chains. A position regulation hole is provided.

As described above, in the chain belt of the present invention, the relative positions of the first chain and the second chain in the longitudinal direction are restricted by the position restriction hole and the pin extending toward the other chain side. Here, the link plate facing the other chain provided with the position regulating hole functions as a position regulating member, and the link plate is only one of the extending one of the connecting pins. Since they are engaged, when the pair of pins relatively roll on their outer peripheral surfaces as the chain belt turns, relative slip between the pins and the position regulating member is prevented. As a result, wear and drive loss of the pin and the link plate functioning as the position regulating member are suitably suppressed.

Further, the link plates functioning as the position restricting member can also function as a retaining member for the first pin by being arranged on both sides of the first chain and the second chain in the width direction. Therefore, a member dedicated to preventing the first pin from coming off is unnecessary, the number of parts is reduced, and the chain belt is lightened.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 2 shows a belt type continuously variable transmission 12 for a vehicle in which the chain belt 10 according to one embodiment of the present invention is used. In the figure, the belt type continuously variable transmission 12 is
Input shaft 14 and output shaft 16 arranged parallel to each other
And a pair of primary side variable pulleys 18 having variable effective diameters attached to the input shaft 14 and the output shaft 16, respectively.
And the secondary variable pulley 20 and the variable pulley 1
A chain belt 10 wound between 8 and 20 is provided, and power is transmitted via the chain belt 10. The primary side variable pulley 18 and the secondary side variable pulley 20 are connected to the input shaft 14 and the output shaft 16 respectively.
Fixed to the primary side fixed rotary body 22 and the secondary side fixed rotary body 24 respectively, and the input shaft 14 and the output shaft 16 are attached to the primary side fixed rotary body 22 so as to be movable in the axial direction and non-rotatable around the axis. And the primary side movable rotary body 2 that forms an annular V groove between the secondary side fixed rotary body 24 and the secondary side fixed rotary body 24.
6 and a secondary side movable rotary body 28.
The primary side movable rotary body 26 and the secondary side movable rotary body 2
Thrust is given to each of the primary side hydraulic actuator 30 and the secondary side hydraulic actuator 32, and the gear ratio of the belt type continuously variable transmission 12 is changed by the unbalance of the thrusts by a shift control valve (not shown). Can be changed continuously.

As shown in FIGS. 1, 3 and 4, for example, the chain belts 10 are arranged in parallel with each other and are arranged on both sides in the width direction of the chain belt 10.
One end portion is inserted between each of the first link plates 34 and the two second link plates 36 located between them, and the total of five first link plates 34 and second link plates 36. Further, four second link plates 36 that are parallel to each other are connected by a rocker pin 38 to form an endless ring, and a first chain 40 and a second chain 42 that are substantially parallel to each other and are displaced by a half pitch, and those. A large number of belt blocks arranged in parallel with the width direction of the first chain 40 and the second chain 42 with a predetermined interval, and alternately attached to the inner peripheral sides of the first chain 40 and the second chain 42. Four
4 is provided, and power is transmitted between the belt block 44 and the first chain 40 and the second chain 42.

1 and 3 show a state in which the belt blocks 44 are connected in an annular shape along a straight line, and FIG. 4 shows the belt blocks 44 in the V groove of the variable pulley 18 or the variable pulley 20. It shows a state in which they are connected in an annular shape along the inner wall surface. The chain double-dashed line C _{1 in} FIGS. 1 and 3 indicates the center line of the chain belt 10.
Further, in FIG. 3, the alternate long and short dash line indicates the inner wall surface of the V groove, and the rocker pin 38 of the second chain 42 is entirely shown in its cross section.

As shown in FIG. 5, the rocker pin 38 comprises a pair of first arcuate pins 46 each having an arcuate cross section and a second arcuate pin 48 longer than the first arcuate pin 46. In the longitudinal direction of the link plate 36, the second arc-shaped pins 48 are located at both ends of the first arc-shaped pins 46 and their back surfaces are in contact with each other. Mating hole 5
It is fitted in 4, 56. The first arcuate pin 4
The length of 6 is substantially the same as the total thickness of the seven second link plates 36, and the length of the second arc-shaped pin 48 is two.
The thickness of the first link plate 34 and the second link plates 36 of seven sheets is longer than the total thickness by a predetermined dimension. The above-mentioned predetermined dimensions are the same as the first chain 40 and the second chain 42 when the chain belt 10 is assembled.
Of the first link plate 34 until the tip of the second arc-shaped pin 48 of one of the chains overlaps the first link plate 34 on the center line C ₁ side of the other chain in the width direction of the chain belt 10. The size is set so as to project to the other chain side through pin fitting holes 50 and 51 described later.

The first link plate 34 corresponds to a position restricting member for restricting relative movement of the pair of chains 40, 42 in the longitudinal direction while contributing to power transmission, and as shown in FIG. The second chain of one of the first chain 40 and the second chain 42 has a long plate shape.
In order to fit the arc-shaped pin 48, a pair of pin fitting holes 50, 51 formed at both end sides in the longitudinal direction and an elongated hole shape provided at an intermediate portion in the longitudinal direction and parallel to the center line C ₂ direction. And a pin receiving hole 52. The pin fitting holes 50 and 51 are arcuate and are open at both ends. The pin receiving hole 52 is provided in the first link plate 34 facing one chain of the other chain of the first chain 40 and the second chain 42, and is a second chain extending to the other chain side of the one chain. This corresponds to the position regulating hole of the present invention that receives the tip end of the arcuate pin 48 and prevents relative movement of the first chain 40 and the second chain 42 in the longitudinal direction. In this embodiment, the dimension of the pin receiving hole 52 in the longitudinal direction of the chain belt 10 is substantially the same as the dimension of the second arcuate pin 48 in the longitudinal direction, and the pin receiving hole 52 and the second
By the engagement with the arcuate pin 48, the relative movement of the first chain 40 and the second chain 42 in both the longitudinal directions is restricted. Further, in the present embodiment, the pin receiving hole 52 has the center line C ₂ in order to restrict the relative positions of the first chain 40 and the second chain 42 to positions where the phases in the longitudinal direction are shifted from each other by approximately a half pitch. One of the inner wall surfaces parallel to is formed so as to be located on the center line C ₂ .

As shown in FIG. 7, the second link plate 36 is in the form of a long plate, and has a pair of substantially circular pin-fitting holes formed on both ends thereof for fitting the rocker pins 38 therein. 54, 56 and the end face located in the longitudinal intermediate portion between the pin fitting holes 54, 56 from the chain belt 10
And a pair of gripping protrusions 58 and 59 which project toward the inner peripheral side of each other at predetermined intervals. A pair of gripping protrusions 58,
Engagement recess 6 for receiving the belt block 44 between 59
2 is formed, and a pair of contact portions 64 and 6 indicated by black circles.
6, the belt block 44 is brought into contact with the outer peripheral side edge portion.

The engaging recess 6 of the second link plate 36.
The bottom part of 2 is formed so as to be located on the inner peripheral side by a certain distance from the inner peripheral side edge part located on the outer side of the engaging recess 62, and on the inner peripheral side of the first link plate 34. The end edge portion is adapted to be aligned with the inner peripheral side end edge portion of the second link plate 36 in the radial direction positions of the variable pulleys 18 and 20 in a state of being connected by the rocker pin 38. Therefore, as shown in FIG.
When the belt blocks 44 are connected along a straight line in the assembled state of the chain belt 10, the first chain 4
0 and a first chain that constitutes one of the second chains 42
The inner peripheral side edge portions of the link plate 34 and the second link plate 36 and one of the chains 40 or 42
A space Δh is provided between the belt block 44 and the top of the belt block 44. This interval Δh is the first in the state of being fed into the V groove of the primary side variable pulley 18 or the secondary side variable pulley 20 and in the state of being fed out of the V groove.
The chain 40 and the second chain 42 are provided so as not to contact the first link plate 34 and the second link plate 36 with the belt block 44 even when the chain 40 and the second chain 42 move relative to each other. When the pitch of the first chain 40 and the second chain 42 is 8 mm and the hanging radius of the chain belt 10 is 30 mm, about 0.
The value is 3 mm.

The pin fitting hole 5 of the second link plate 36
In the portions of the inner peripheral edge portions of 4, 56 located on the end side in the longitudinal direction, the first arcuate pin 46 and the second arcuate pin 48 are located on the end part side of the second link plate 36. A convex rotation stopper 6 that engages with the inside of the second arcuate pin 48 and prevents relative rotation with the link plate 36.
0 and 61 are provided respectively. This makes the first
The arcuate pin 46 and the second arcuate pin 48 are relatively rolled on their back surfaces as the chain belt 10 is bent.

The belt block 44 is made up of two types, a first belt block 44a and a second belt block 44b. As shown in detail in FIGS. 8 and 9, the first belt block 44a has a shape of an elongated plate having the same height dimension in the longitudinal direction, and the variable pulleys 18 and 2 are provided.
A pair of friction taper surfaces 6 frictionally engaged with the inner wall surface of the V groove 0
2, 64 are provided on the end surface of the belt block 44a in the width direction. A pair of facing surfaces 66 facing the belt blocks 44a and 44b on both sides of the belt block 44a,
The friction taper surfaces 62 and 64 are formed with a pair of engagement grooves 70 and 72, both ends of which are open, along the outer peripheral side edge of the belt block 44a. The engagement grooves 70, 72 are a pair of stopper portions 74 provided on the friction taper surface 62 side of the center line C of the engagement grooves 70, 72,
The friction taper surface 62 of the stopper portions 74, 76
It is divided into first engaging groove portions 78a and 80a extending toward the side and second engaging groove portions 78b and 80b extending toward the friction taper surface 64 side of the stopper portions 74 and 76, respectively.

The first engaging groove portions 78a, 80a are formed by one first link plate 34 and four second link plates 36.
And a length dimension longer by a predetermined dimension than the sum of the plate thicknesses. Further, the second engaging groove portions 78b and 80b are between the stopper portions 74 and 76 and the center line C, and the total thickness of the first link plate 34 and the second link plate 36 is one. Also has a length dimension that is longer by a predetermined dimension. The stopper portions 74 and 76 are located near the edges of the engagement grooves 70 and 72 and near a predetermined straight line that is substantially parallel to the center line C in FIG.
The two points shown by the mark are respectively crimped, and the grooves 70, 72
Is formed by filling a part of the. As a result, the second link plate 36 and the belt block 44a
Relative movement in the width direction is prevented, and the first chain 40
The second chain 42 is restricted from approaching the second chain 42 beyond a certain limit.

As shown in detail in FIGS. 10 and 11, the second belt block 44b has the first engaging groove portions 82a, 82a.
The length dimension of 4a is a predetermined dimension longer than the total plate thickness of the one first link plate 34 and the three second link plates 36, and the stopper portions 74, 76 in the second engaging groove portions 82b, 84b. The first point is that the length dimension between the side edge portion and the center line C is longer than the total thickness of the one first link plate 34 and the three second link plates 36 by a predetermined dimension. It is different from the belt block 44a. Other first
Portions common to the belt block 44a are designated by the same reference numerals as those of the first belt block 44a, and description thereof will be omitted.

The outer peripheral edge of the chain belt 10 of the belt blocks 44a and 44b has an arcuate cross section, which increases the width of the grip projections 58 and 59 of the second link plate 36. Also gripping protrusions 58, 5
The back surfaces 86 and 88 located on both outer sides of 9 are prevented from interfering with the belt block 44 mounted on the other first link plate 34 of the first chain 40 and the second chain 42. Gripping protrusion 5
A sufficient strength of 8, 59 can be secured.

When assembling the chain belt 10,
First, a large number of first belt blocks 44a and second belt blocks 44b are alternately arranged in parallel at a predetermined interval so that the first engaging groove portions 78a, 80a and 84a, 82a face each other. Then, the two second link plates 36 are alternately inserted into the first engaging groove portions 78a, 80a and 82a, 84a so that one ends of the second link plates 36 are alternately inserted from the friction taper surface 62 side. , Gripping protrusion 5
The tips of 8, 59 are fitted into the stopper portions 74, 76 while moving them, and two and one pieces are alternately inserted into the second engagement groove portions 78b, 80b and 82b, 84b from the friction taper surface 64 side. The tip ends of the gripping protrusions 58, 59 of the second link plate 36 are fitted into the stopper parts 74, 76 while being moved, and the rocker pin 38 is inserted into the pin fitting holes 54, 56 of the seven second link plates 36. The second link plates 36 of one group are sequentially connected by fitting.

Next, one first link plate 34 is fitted to each tip of the second arcuate pins 48 on both outer sides of the second link plates 36 of the first belt block 44a. Then, the second arcuate pin 48 protruding from the first link plate 34 is swaged at a position marked with an X mark (FIG. 4) on both end faces, or at a position near the second arcuate pin 48 of the first link plate 34. The first link plate 34 and the second arcuate pin 48 are fixed to each other by assembling, and the first chain 40 and the second chain 42 are respectively assembled. As a result, the belt blocks 44a and 44b on the friction taper surface 62 side of the center line C _{1 have} their outer peripheral edge portions gripped by the three and four pairs of gripping protrusions 58 and 59, respectively, and the first chain. 40 or the second chain 42 is attached to the inner circumferential side of the second chain 42 so as not to fall off.

In this way, the first chain 40 in which a large number of first belt blocks 44a and the second belt blocks 44b are alternately mounted and the belt blocks 44a and 44b of the first chain 40 are provided in a large number. The second chain 42 in which the belt blocks 44a and 44b are alternately mounted is arranged in parallel so that the mutual belt blocks 44 are alternately positioned in parallel, and the first link plate facing the other chain of one chain. 34 pin receiving hole 52
The tip of the second arcuate pin 48 of the other chain
By fitting every other book, they are combined with each other in a state where they are shifted by a half pitch, and as a result, as shown in FIGS.
And the chain belt 10 shown in FIG. 4 is assembled.

The chain belt 1 constructed as described above
At 0, the relative position of the first chain 40 and the second chain 42 in the longitudinal direction is regulated by the pin receiving hole 52 and the second arcuate pin 48 extending to the other chain side. Here, the first functioning as a position regulating member
Since the link plate 34 is engaged only with the second arcuate pin 48 of the rocker pin 36 in the pin fitting holes 50, 51, the pair of pins are mutually coupled as the chain belt 10 is bent. When relatively rolling on the outer peripheral surface, the rocker pin 38 and the first link plate 3
4 is prevented from sliding relative to the rocker pin 3
Wear and drive loss of the first and second link plates 34 are preferably suppressed.

Further, in this embodiment, the first link plate 34 is disposed on both sides of the first chain 40 and the second chain 42 in the width direction, respectively, so that the first arcuate pin 46 is prevented from coming off. Is also functioning as. For this reason, a member dedicated to preventing the first arcuate pin 46 from coming off is unnecessary, the number of parts is reduced, and the chain belt 10 is lightened.

Further, according to the present embodiment, the belt block 44 has the first belt in which the engaging grooves 78, 80 and 82, 84 having the length corresponding to the number of the gripping protrusions 58, 59 to be fitted are formed. Since the block 44a and the second belt block 44b are composed of two types, when the chain belt 10 is assembled, the engaging protrusions 58, 59 of the first chain 40 and the second chain 42 are engaged with the engaging grooves 78, 8 respectively.
By aligning the positions of 0 or 82, 84, the first
There is an advantage in that the belt block 44 is reliably positioned in the circumferential direction and the width direction with respect to the chain 40 or the second chain 42.

Further, according to the present embodiment, the chain can be obtained by simply combining the first chain 40 having a large number of belt blocks 44 and the second chain 42 having a large number of different belt blocks 44 with each other. Since the belt 10 is assembled, there is an advantage that the assembling work of the chain belt 10 can be easily performed.

Next, another embodiment of the present invention will be described. In the following description, members that are the same as those in the above-described embodiment will be assigned the same reference numerals and description thereof will be omitted.

The chain belt 100 shown in FIGS. 12 and 13 has a second rocker pin 102 instead of the rocker pin 38 which is positioned every other one of the rocker pins 38 of the chain belt 10 described above. It differs from the chain belt 10 only in that the first link plate 104 is used instead of the 1-link plate 34.

The second rocker pin 102 includes two first link plates 34 and seven second link plates 36.
In place of the second arc-shaped pin 48, which is longer than the total plate thickness by a predetermined dimension, the third arc-shaped pin 10 is different only in the predetermined dimension.
Have six. The predetermined dimension of the third arc-shaped pin 106 is such that, in the assembled state of the chain belt 100, the tip of one of the first chain 40 and the second chain 42 on the other chain side is the width direction of the chain belt 10. in is set to slightly protrude to the other is the chain side and does not contact the first link plate 34 of the center line C ₁ side of the other chain positions from the center line C _1. As a result, the chains 40, 4
Interference between one of the second rocker pins 102 and the second link plate 36 of the other chain facing the tip end surface of the second rocker pin 102 is prevented.

As shown in FIG. 14, the first link plate 104 has a rectangular plate shape having substantially the same longitudinal dimension as the second link plate 36, and has a pair of pins of the first link plate 36. A pair of arc-shaped pin fitting holes 108 and 109 are provided at positions corresponding to the fitting holes 50 and 51. The pin fitting holes 108 and 109 are shaped so that the openings of the pin fitting holes 50 and 51 of the first embodiment are closed. The third arc-shaped pin 106 of the second rocker pin 102 is placed in one of the pin fitting holes 108 and 109, and the second arc-shaped pin 106 of the rocker pin 38 is placed in the other pin fitting hole 109. The pin 48 is fitted.

In the chain belt 100 as described above, the same effect as that of the chain belt 10 described above can be obtained, and in addition, since the pin fitting holes 108 and 109 are completely closed, the second The pull-out load of the arcuate pin 48 or the third arcuate pin 106 is suitably increased.

The chain belt 110 shown in FIGS. 15 and 16 differs from the chain belt 100 only in that the first link plate 112 of the chain belt 100 is used in place of the first link plate 104. As shown in FIG. 17, the first link plate 112 has a longitudinal dimension that is almost twice that of the pin receiving hole 52, and the pin receiving hole 114 that is the target of the center line C ₃ is provided in place of the pin receiving hole 52. The only difference is the first link plate 104.

In the chain belt 110 having the first link plate 112 as described above, the pin receiving hole 114, the second arc-shaped pin 48, and the third arc-shaped pin 106 allow the first chain 40 and the second chain 42 to move. The relative position in the longitudinal direction is regulated. That is, in FIG. 15, the relative movement of the second chain 42 to the left in the longitudinal direction with respect to the first chain 40 is caused by the inner wall surface of the pin receiving hole 114 of one chain and the pin receiving hole 11 thereof.
Second arcuate pin 4 of the other chain fitted in 4
8 is regulated by engaging with the tip end portion of No. 8, and relative movement to the right in the longitudinal direction is caused by the tip end portions of the third arc-shaped pins 106 adjacent to each other of the first chain 40 and the second chain 42. It is regulated by matching.

According to the chain belt 110 of this embodiment, in addition to the same effect as the chain belt 100 described above, the pin receiving hole 114 is symmetrical with respect to the center line C ₃ of the first link plate 112. Since the first chain 40 and the second chain 42 are assembled, the first chain 40 and the second chain 42 can be assembled in any of the front and back directions of the first link plate 112, which facilitates the assembly and improves the efficiency of the assembly work. It is possible to obtain the effect of being improved.

The chain belt 120 shown in FIGS. 18 and 19 differs from the chain belt 110 only in that a first link plate 122 is used in place of the first link plate 112 of the chain belt 110 described above. . As shown in FIG. 20, the first link plate 122 is provided with a pin receiving hole 124 having a shape in which the pin receiving hole 114 is opened toward the outer peripheral side edge portion instead of the pin receiving hole 114. Is different from the first link plate 112.

According to the chain belt 120 of this embodiment, in addition to obtaining the same effect as the above-mentioned chain belt 110, the pin receiving hole 124 is opened at the outer peripheral edge of the first link plate 122. First, because
Since the rigidity of the link plate 122 is relatively low, the load ratio of the tension generated in the first chain 40 and the second chain 42 is reduced, and the damage of the first link plate 122 is preferably prevented. The effect is obtained.

Although one embodiment of the present invention has been described above with reference to the drawings, the present invention can be applied to other modes.

For example, in the above-described embodiment, the first link plates 34, 104, 1 functioning as position regulating members.
The first and second chains 12 and 122 are arranged on both outermost sides in the width direction of the first chain 40 and the second chain 42 in order to function also as a retaining member for the first arcuate pin 46. In one of the second chains 42, it may be arranged only on the side of the other chains 40, 42.

Further, FIGS. 6, 14, and 1 of the above-mentioned embodiment.
7, the link plates 34, 104, 112, 1 of FIG.
Like the second link plate 36, the engaging grooves 70, 7 projecting from the intermediate portion in the longitudinal direction toward the inner peripheral side are formed in the groove 22.
A gripping protrusion for fitting in 2 may be provided. In such a chain belt, since the number of members involved in power transmission increases, the transmission capacity increases.

Further, the pin receiving hole 52 of the first link plates 34, 104 of the first and second embodiments described above has an outer peripheral edge portion (FIG. 6, FIG. 6, like the pin receiving hole 124 of FIG. 20). The upper part of FIG. 14) may be opened, and the first link plate 34 is provided with the pin receiving hole 114 or 124 of the third or fourth embodiment in place of the pin receiving hole 52. May be.

Further, in the above-described embodiment, the end portions of the second arc-shaped pin 48 and the third arc-shaped pin 106 have the first link plates 34, 104, 1 in order to prevent the pins from coming off.
Although they have been caulked to 12, 122, the both ends may be fixed by being press-fitted into the pin fitting holes 50, 51 and 108, 109.

Besides, the present invention can be variously modified without departing from the spirit thereof.

[Brief description of drawings]

1 is a plan view of a part of the chain belt of FIG. 2 corresponding to a cross-sectional view taken along line I-I of FIG. 3 showing a state in which the chain belt is connected along a straight line.

FIG. 2 is a diagram for explaining the configuration of a belt type continuously variable transmission including a chain belt that is an embodiment of the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a front view of the chain belt of FIG. 2, showing a part of it in an enlarged manner.

5 is a perspective view showing the rocker pin of FIG. 1. FIG.

6 is a front view showing the first link plate of FIG. 1. FIG.

FIG. 7 is a front view showing a second link plate of FIG.

FIG. 8 is a front view of the first belt block of FIG.

9 is a side view of the first belt block of FIG. 8. FIG.

10 is a front view of the second belt block of FIG. 1. FIG.

11 is a side view of the second belt block of FIG.

FIG. 12 is a diagram of a chain belt according to a second embodiment of the present invention.
It is a top view corresponding to.

13 is a front view of the chain belt of FIG. 12 corresponding to FIG.

14 is a front view corresponding to FIG. 6 showing the first link plate of FIG.

FIG. 15 is a diagram of a chain belt according to a third embodiment of the present invention.
It is a top view corresponding to.

16 is a front view of the chain belt of FIG. 15 corresponding to FIG.

17 is a front view corresponding to FIG. 6 showing the first link plate of FIG.

FIG. 18 is a diagram of a chain belt according to a fourth embodiment of the present invention.
It is a top view corresponding to.

19 is a front view of the chain belt of FIG. 18 corresponding to FIG. 4;

20 is a front view corresponding to FIG. 6 showing the first link plate of FIG. 18. FIG.

[Explanation of symbols]

10, 100, 110, 120: Chain belt 18: Primary side variable pulley, 20: Secondary side variable pulley ...
-(V pulley) 34, 104, 112, 122: first link plate-
.. (Link plate) 36: Second link plate ... (Link plate) 38: Rocker pin ... (Connecting pin) 40: First chain 42: Second chain 44: Belt block 46: First arc shape Pin: (first pin) 48: Second arc-shaped pin ... (second pin) 50, 51: Pin fitting hole (fitting hole) 52, 114, 124: Pin receiving hole ... ( Position regulating hole) 54, 56: Pin fitting hole (fitting hole) 102: Second rocker pin ... (Connecting pin) 106: Third arc-shaped pin ... (Second pin) 108, 109: Pin Fitting hole ... (Fitting hole)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shigeru Okuwaki 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Co., Ltd. (72) Inventor Yukio Tomimura 1300-50 Irokuno, Hachiman, Nabari City, Mie Borg Warner・ Inside Automotive Co., Ltd.

Claims (1)

[Claims] 1. A connecting pin comprising a pair of a first pin and a second pin which are mutually rollable on their rear surfaces, and the connecting pin is fitted into fitting holes provided at both ends, A plurality of link plates connected in the longitudinal direction in a state where a plurality of sheets are stacked in the thickness direction, and among the first pin and the second pin fitted in the fitting hole, on the end side of the link plate. At least a pair of endless annular chains whose positions are fitted to the link plate such that they cannot rotate relative to each other are arranged side by side in a state of being displaced from each other by a half pitch, and have a size corresponding to the width dimension of the parallel state. In a chain belt having a large number of belt blocks on the inner peripheral side, in one of the pair of endless annular chains, the other chain of the pair of first pins and second pins is used. Only one pin located on the end side of the link plate facing the chain extends to the other chain side through the link plate, and to the link plate facing the one chain of the other chain. A chain belt, which is provided with a position regulating hole that receives a tip end portion of the extended pin and prevents relative movement in a longitudinal direction of the pair of endless annular chains.