KR101017423B1

KR101017423B1 - Belt supporter of chain belt-type continuously variable transmission

Info

Publication number: KR101017423B1
Application number: KR1020100137823A
Authority: KR
Inventors: 조윤규
Original assignee: 조윤규
Priority date: 2010-12-29
Filing date: 2010-12-29
Publication date: 2011-02-28
Also published as: WO2012091472A3; WO2012091472A2

Abstract

PURPOSE: A belt supporter of a chain belt-type continuously variable transmission is provided to reduce vibration and noise by installing a belt supporter to be inclined against a pulley shaft. CONSTITUTION: Front and rear latch gears(61,62) are formed in the top of a main body(66). The teeth of front and rear latch gears are opposite to each other. The latch gear which is formed on a driving shaft support and a driven shaft support respectively and is crossed with each other. The main body of a belt support(60) is classified into front and rear parts. A slider guide part(65) is guided the slide groove of a pulley board is formed in the main body.

Description

Belt supporter of chain belt-type continuously variable transmission

The present invention relates to a belt support of a chain belt continuously variable transmission in which a latch type chain belt is wound around a drive pulley device and a driven pulley device having a variable diameter, and more particularly, a drive pulley device and a driven pulley. In the state where the latch gears formed on the plurality of belt supports radially installed in the pulley device are divided in the front and rear directions, the teeth of the front and rear latch gears are formed in opposite directions, and the respective racks The teeth of the latch gears formed on the toothed gear and the driven belt support face each other in opposite directions, and the latch gears formed on the driven side belt support and the driven belt support are not installed in a straight line with each other. The main body of the belt support is formed inclined in the form of a helical gear while The front body that forms the side latch gear portion and the rear body that forms the rear latch gear portion are detachably mounted so that the vehicle is driven from the wheels to the engine, such as when the vehicle is normally driven by the engine power or when the vehicle descends downhill. In this case, all of them can transmit the rotational force, and each belt support is installed obliquely like the teeth of the helical gear to reduce the vibration and noise in the continuously variable transmission, so that accurate power transmission is achieved. In order to facilitate the production of the belt support by separately installing the front and rear body formed in front and rear latch gear portion in the opposite direction to the inclined body formed.

In the related art, the applicant of the present invention has filed a patent application (No. 10-091522) for a "belt continuously variable transmission".

The pre-registered prior invention (patent registration No. 10-091522) is a variable drive pulley for controlling the speed ratio while the diameter is variable, the variable drive pulley and the belt is connected to the variable drive pulley and the diameter is changed by the operation opposite to the belt A belt type continuously variable transmission comprising a variable driven pulley for adjusting the tension of the belt, wherein the variable drive pulley and the variable driven pulley are formed of a plurality of belt support ratchet gear portion formed between the pair of pulley plate coupled to the pulley shaft Is installed so as to be movable in a radial direction, and on the outer surface of each pulley plate, a transmission plate is installed to move the plurality of belt supports radially while rotating in opposite directions by the transmission plate rotating device, and the belt Each of the belt catching ratchet gears formed on the belt support of the variable drive pulley and the variable driven pulley on the inner circumferential surface By configuring the ratchet gear parts to be engaged with each other alternately, the diameters of the variable drive pulleys and the variable driven pulleys can be changed more easily and smoothly, enabling more accurate and efficient continuously variable shifting and at the same time under heavy load. To prevent slippage between the pulley and the belt, more efficient power transmission can be realized.

However, this is a structure in which the shift is made only when the vehicle is normally driven by the power of the engine, and the shifted rotational force is transmitted to the axle, so that the belt support and the belt transmit power when driving downhill or when using the engine brake. Contact is made in the opposite direction, there is a problem that can not transmit power slip occurs.

In addition, the belt support installed in the conventional invention is installed horizontally in a state parallel to the pulley shaft is rotated in a state in which the belt is wound around the outside of the plurality of belt support, in the process of separating the belt support and belt contact There was a problem of vibration and noise.

The present invention is to solve the above problems, the teeth of the front and rear latch gear in a state in which the latch gear portion formed in a plurality of belt support that is radially stretched in the drive pulley device and the driven pulley device is divided into front and rear. The teeth of the respective latch gears formed on the drive side belt support and the latch gears formed on the driven side belt support face each other in opposite directions, while the teeth on the drive side belt support and the driven side belt support are formed. The latch gears respectively formed in the front and rear latch gears are installed to be shifted without being placed in a straight line, and the main body of the belt support is inclined in the form of a helical gear, and the front latch gear is formed on the upper surface thereof. As the rear body which formed the part is detachably attached to each other, the vehicle is driven by the power of the engine. In case of driving normally or when the power is transmitted from the wheel to the engine, such as when going downhill, all the transmission power can be transmitted. The belt support is installed obliquely like the teeth of the helical gear. In order to achieve accurate power transmission while reducing vibration and noise in the system, the belt support can be easily manufactured by separately installing the front and rear bodies formed with the front and rear latch gears in opposite directions on the inclined body. Let it be technical problem.

In order to achieve the above object, the present invention provides a latch chain belt wound between a drive pulley device receiving power from an input shaft and a driven pulley device transmitting power to an output shaft, wherein the drive and driven pulleys are provided. In the chain belt type continuously variable transmission in which a plurality of belt supports on which the latch chain belt is wound are radially stretched, the belt supports are divided into front and rear sides to form front and rear latch gears on the upper surface of the main body. The teeth of the rear latch gears are formed in opposite directions, and the teeth of the front and rear latch gears formed on the driving and driven belt supports are formed in the opposite directions. The front and rear latch gear parts formed on the side latch gear part and the driven belt support are not positioned in a straight line and are shifted outwardly. It is formed, the main body of the belt support is formed obliquely, the belt support is another example that the front body and the rear body formed the rear latch gear portion, and the rear body formed the rear latch gear portion is detachably coupled to the main body, respectively. It features.

The belt support of the chain belt continuously variable transmission of the present invention as described above is provided by installing two rows of latch chain belts between the drive and driven pulley device in which the belt support in which the teeth of the latch gear are formed in the opposite direction is installed. When driving downhill or uphill, the driving force supplied from the engine can be shifted to the output side, and when the downhill driving or the engine brake is used, the engine brake can be transmitted from the wheel side of the body moving in the direction of gravity to the engine. Has the effect of working.

In addition, the belt support is installed obliquely in the form of a helical gear with respect to the pulley shaft, which reduces the vibration and noise when the chain belt and the belt support come into contact with each other. This is the effect that will be made.

And the belt support body formed inclined to separate the front and rear body formed with the front and rear latch gear in the opposite direction to each other is installed separately to facilitate the production of the belt support has the effect of improving productivity.

1 is a perspective view showing an embodiment of the present invention.
Figure 2 is an exploded perspective view showing this embodiment of the present invention.
Figure 3 is a perspective view showing the installation of the present invention.
Figure 4 is a perspective view of a part of the latch-type chain belt corresponding to the present invention shown in FIG.
5 is an explanatory view showing an operation relationship between the belt support and the latch chain belt according to the present invention.
6 (a) and 6 (b) are explanatory diagrams of the relationship of action seen from the line AA and line BB of FIG.
7 is a plan view partially showing a drive pulley device and a driven pulley device to which the present invention is installed.
8A and 8B are cross-sectional views taken along line CC and line DD of FIG. 7.
9 is a perspective view showing a continuously variable transmission to which the present invention is installed.
10 is a plan view showing a transmission main body is installed the present invention.
11 is a cross-sectional view taken along the line EE of FIG. 10.
12 is a cross-sectional view taken along line FF of FIG. 10.
Figure 13 is a longitudinal sectional view of the pulley device to which the present invention is installed.
14 is an exploded perspective view of the pulley device to which the present invention is installed;

Hereinafter, the belt support of the chain belt continuously variable transmission according to the present invention will be described with reference to the accompanying drawings 1 to 14 as follows.

The belt support 60 of the chain belt continuously variable transmission according to the present invention includes a drive pulley device 20 that receives power from the input shaft 80 and output shaft 84 as shown in FIGS. 9, 10 and 13, 14. It is to be installed in the continuously variable transmission (1) is installed between the latch chain belt 70 is wound between the driven pulley device (30) for transmitting power.

That is, the belt support 60 is installed radially stretched in the drive and driven pulley device (20, 30) is installed so that the latch-type chain belt 70 is wound around the plurality of belt support (60) drive and As the diameter of the driven pulley device 20, 30 is varied, the speed ratio is varied.

The driving and driven pulley devices 20 and 30 are installed to face the pulley plate 50 in front of and behind the cylinder 47 of the pulley shaft 40 in which the cylinder 47 is installed in the center, but the pulley plate 50 is provided. In the plurality of slide grooves 51 are formed radially, the pulley shaft 40 on the outside of the front and rear pulley plate 50, the involute curve groove 53 corresponding to each slide groove 51 A transmission plate 52 having a recess is installed to rotate on the outside of the pulley shaft 40.

At this time, the belt support 60 is installed between the front and rear pulley plate 50, both ends of the belt support 60 penetrates the slide groove 51, the involute curve groove of the shift plate 52 It is inserted to guide in (53).

The belt support 60, which is a feature of the present invention, has one embodiment shown in FIG. 1 and this embodiment shown in FIG. 2, which is one embodiment in which the belt support 60 is formed integrally as a whole. For example, the front and rear bodies 61a and 62a in which the latch gears 61 and 62 are formed on the upper portion of the main body 66 are assembled and assembled.

First, the belt support 60 of the embodiment shown in FIG. 1 has a main body 66 of the belt support 60 divided into front and rear as shown in FIGS. 1 and 3, and thus the front and rear sides of the belt support 60 are shown in FIG. The latch gears 61 and 62 are formed, but the teeth of the front and rear latch gears 61 and 62 are formed in opposite directions, and the front and rear belt supports 60a and 60b are formed on the front and back sides. The front and rear latch gear parts 61 and 62 and the driven belt support 60b formed on the drive side belt support 60a while teeth of the rear latch gear parts 61 and 62 are formed in opposite directions. The front and rear latch gear portions 61 and 62 formed in the upper and rear sides are not disposed in a straight line.

And the main body 66 of the belt support 60 is formed obliquely, as shown in Figures 5 and 7, 10 pulley shaft 40 in the form of a helical gear between the front and rear pulley plate 50. Is installed in the direction of the center line and inclined.

3 and 13, guide protrusions 64 are formed at both ends of the main body 66 of the belt support 60 to be guided into the involute curve groove 53 of the shift plate 52. In the main body 66 inside the side guide protrusions 64, a slide guide part 65 guided to the slide groove 51 of the pulley plate 50 is formed.

The following is a description of this embodiment of the belt support 60 shown in FIG. 2, in which one embodiment of the belt support 60 is integrally formed as a whole, and this embodiment shown in FIG. Since the front and rear bodies 61a and 62a, in which the front and rear latch gear portions 61 and 62 are formed separately on the main body 22, are only provided in a prefabricated manner, the first and second embodiments are similar to each other. Detailed description will be omitted, and only the changed structure of this embodiment will be described.

That is, in the belt support 60 according to this embodiment illustrated in FIG. 2, an insertion part 67 having an open upper portion is formed in the main body 66 between the two slide guides 65, and the insertion part 67. ), The front body 61a having the front latch gear portion 61 and the rear body 62a having the rear latch gear portion 62 are detachably coupled to each other.

At this time, the means for installing the front and rear bodies 61a and 62a in the insertion portion 67 of the main body 66 is provided with the front and rear bodies 61a and 62a in the main body 66 using screws as shown in FIG. However, it is noted that the front and rear bodies 61a and 62a may be installed by welding to the insertion portion 67 of the main body 66.

Although the front and rear bodies 61a and 62a have been described above in the insertion portion 67 of the main body 66, the front and rear bodies 61a and 62a may be provided in the flat main body without forming the insertion portion of the main body 66. It is.

The latch chain belt 70 wound around the plurality of belt supports 60 according to the present invention configured as described above is located at the front and rear sides of the belt support 60 as shown in FIGS. 3, 4 and 9, 13. It is wound in two lines, the chain belt wound on the front side of the belt support 60 is called the primary chain belt 71 and the chain belt wound on the rear side of the belt support 60 is the secondary chain belt (72). It is called.

Front and rear latch gear portions formed on the inner side of each of the first and second chain belts 71 and 72, that is, the side of the belt support 60 and the driving side belt support 60a and the driven side belt support 60b. The latch portion 73 is formed to correspond to the (61, 62), these latch portion 73 is the forward latch portion 73a and the reverse latch portion corresponding to the front and rear latch gear portions 61,62 73b is formed in the opposite direction.

The first and second chain belts 71 and 72 are installed in a plurality of chain belt pieces 74 connected in series with pins 75 in the same manner as connecting and installing a link metal watch band, and the chain belt pieces ( 74 is formed with a pin fitting portion 76 having a pin hole 76a into which the pin 75 is fitted at the front and rear ends, and the latching device of the belt support 60 between the front and rear pin fitting portions 76. The latch portion 73 corresponding to the fisherman 63 is formed to connect and install a plurality of chain belt pieces 74 by the pin 75.

In one example of the chain belt piece 74 shown in Figure 4, the front and rear pin fitting portion 76 is formed to be offset, but in another example the front pin fitting portion 76 is formed at intervals and the opposite pin fitting It is noted that the portion 76 can be formed in the center.

And the latch gear portion 63 of the belt support 60, which is the main part of the present invention is shown in Figure 1 and 2, three latch gear portion 63 is formed in the belt support 60, shown in Figure 3 Although the belt support 60 has four latch gears 63 formed therein, it is understood that the number of the latch gears 63 may be added or subtracted according to the capacity and size of the continuously variable transmission.

Referring to Figures 1 to 14 the working relationship of the present invention configured as described above is as follows.

First, in explaining the application relationship to the present invention, since the main feature of the present invention relates to the structure of the belt support, it will be described in detail the operational relationship to the portion associated with the belt support, the continuously variable transmission in which the present invention is installed The power transmission process will be outlined.

That is, when power is supplied from a power generator such as an engine or a driving motor (for an electric vehicle) to the input shaft 80 of the continuously variable transmission 1 provided with the belt support 60 according to the present invention, FIGS. 9 and FIG. As shown in FIG. 10, the driving pulley device 20 is rotated through the front connection gear 82 and the driving pulley side front gear 83 engaged with the driving gear 81 installed on the input shaft 80.

The rotating drive pulley device 20 rotates the driven pulley device 30 together as the driven pulley device 30 on the other side is connected with the latch chain belt 70. The shift is made by the diameter difference between the device 20 and the driven pulley device 30, and the rotational force thus shifted is output through the output shaft 84 connected to the driven pulley device 30 to be connected to the output shaft 84. The wheels of the vehicle will be rotated.

Next, a description will be given of the power transmission process between the drive and driven pulley device (20,30) and the latch chain belt (70) provided with the belt support 60, which is the main part of the present invention.

The belt type continuously variable transmission to which the present invention is installed is shown in FIGS. 13 and 14. The oil inlet port 42 of the pulley shaft 40 is provided at the center of the driving pulley device 20 and the driven pulley device 30, respectively. By connecting the hydraulic supply device (not shown) to supply the hydraulic pressure to the pulley shaft 40, the pulley shaft 40 is moved horizontally in the axial direction by the action of the cylinder 47.

At this time, the front and rear side pulley plate 50 of the drive and driven pulley device 20, 30 is installed in the casing so as not to move back and forth, the pulley shaft 40 is in a state capable of horizontal movement in the cylinder type. . In this state, when the hydraulic pressure is supplied to the primary flow path 48 of the pulley shaft 40, the rear space of the piston unit 44 and the inner space e of the pulley plate installation port 46 are expanded, and the pulley shaft 40 is moved forward. When the hydraulic pressure is supplied to the secondary flow path 49, the pulley shaft 40 moves to the rear side.

In this way, when the pulley shaft 40 is horizontally moved to the front side or the rear side in accordance with the situation that the hydraulic pressure is supplied to the first and second flow paths 48 and 49, the pulley plate 50 is provided in front and rear of the pulley plate installation port 46. The transfer table 54 which is installed to be fixed as a screw and has a spiral protrusion 45 is formed on the pulley shaft 40 in front and rear of the pulley plate 50, and the shift plate 52 is fixed to the spiral protrusion 45 by a screw. As the spiral groove 55 of the) is inserted, the front and rear shift plates 52 rotate along the spiral direction.

In this way, the slide groove 51 of the pulley plate 50 and the involute curve groove 53 of the speed change plate 52 corresponding to each other overlap each other, as shown in FIGS. 11 to 13. The guide protrusion 64 formed at the end is inserted into the involute curve groove 53 of the shifting plate 52 through the slide groove 51 of the pulley plate 50 and is formed integrally with the guide protrusion 64. As the guide portion 65 is inserted into the slide groove 51 of the pulley plate 50, the involute curve groove 53 is primarily formed in the direction in which the guide protrusion 64 rotates in the shifting plate 52. It moves along the trajectory of the arc.

At this time, the front and rear side slide guide portion 65 of the belt support 60 formed integrally with the guide projection 64 is inserted into the linear slide groove 51 of the pulley plate 50 formed in the corresponding radial direction and guide The belt support 60 formed with the projection 64 and the slide guide 65 is contracted toward the center of the pulley shaft 40 in the direction in which the shifting plate 52 rotates, or the pulley plate 50 It extends in the circumferential direction.

In this way, when the plurality of belt supports 60 installed between the front and rear pulley plates 50 are contracted or expanded, the latch chain belt 70 is formed on the outer circumference of the driving and driven pulley devices 20 and 30. As the diameter of the drive pulley device 20 is expanded and the diameter of the driven pulley device 30 is contracted as the coil is wound, the diameter of the drive pulley device 20 is contracted and the diameter of the driven pulley device 30 is expanded. By the difference in the outer diameter of the drive and driven pulley device (20,30) while the shift in the chain belt-type continuously variable transmission (1) of the present invention can be made.

Next, a description will be made of the relation of the operation of the belt support 60, which is the main part of the present invention.

Power of the engine is transmitted through the input shaft 80 in a state where the diameters of the driving and driven pulley devices 20 and 30 are changed so as to change the speed so that the driving pulley device 20 rotates in the forward direction (clockwise). 1, 3 and 6, 8, the latched chain belt 70 is wound around the drive and driven pulley devices 20, 30, and radially around the drive and driven pulley devices 20, 30. A latch gear portion 63 is formed in each belt support 60 installed in the belt support, and a latch portion 73 caught in the latch gear portion 63 is formed in the latch-type chain belt 70 corresponding thereto. The latching chain belt 70 is attracted by the rotation of 20, and the latching chain belt 70 then pulls the driven pulley device 30 so that the driving and driven pulley devices 20, 30 are clockwise. Will rotate.

At this time, the belt support 60 is a belt support 60 is installed obliquely like a helical gear between the front and rear pulley plate 50, as shown in Figures 3 and 7, 10, the belt The latch gear portion 63 formed on the support 60 and the latch portion 73 of the latch chain belt 70 which are in contact with the bite in contact with the latch gear portion 63 are also provided to correspond to the latch gear portion 63 of the belt support 60. ) And the latch portion 73 of the latch-type chain belt 70, the latch portion 73 and the latch gear portion 63 is in contact with each other sequentially from one side without contacting at once, so that a plurality of belt support (60) ) And the latch chain belt 70 can minimize the impact and noise generated in the process of contacting each other.

In addition, the latch chain belt 70 is driven and driven pulley device 20, the front primary chain belt 71 and the rear secondary chain belt 72 as shown in Figures 3, 4 and 9 It is installed to be wound in two rows on the front and rear sides of 30, and the latch portion 73 and the drive side belt support 60a and the driven side belt formed on the inner surfaces of the first and second chain belts 71 and 72, respectively. It is in a state of being caught in correspondence with the latch gear portion 63 formed on the outer surface of the support 60b.

In this state, when the power is received from the engine to move forward or backward or travel uphill, the driving pulley device 20 is rotated by the power transmitted to the input shaft 80. In this case, FIGS. 5 and 6 (A) As shown in FIG. 8A, the latch gear portion 63 of the drive side belt support 60a, which is rotated in the same direction as the drive pulley device 20, has the latch portion of the primary chain belt 71. 73, the latch portion 73 of the primary chain belt 71 that is pulled (walking) in the walking state is formed on the driving belt support 60a on the driven belt support 60b side. In the direction in which the drive pulley device 20 provided with the drive side belt support 60a is caught by the latch gear part 63 on the side of the driven side belt support 60b formed in the opposite direction to the gear 63 and the teeth. Drag the driven belt support 60b and install the driven belt support 60b. A driven pulley unit (30) is rotated in a direction of rotation of the driving pulley unit (20).

3, 5, and 6 (a), when the primary chain belt 71 is wound around, two latch gear portions 63 are arranged on the driving side belt support 60a with a gap T. In the placed state, the vertical portion of the latch gear portion 63 faces to the right, and the latch gear portion 63 formed on the driven belt support 60b includes two latch gear portions 63 formed on the drive side belt support 60a. The teeth are positioned in a straight line with the gap T between them, and the teeth are formed in the opposite direction, and are wound around the primary chain belt 71 wound around the drive side belt support 60a and the driven side belt support 60b. The formed latch portion 73 is formed to correspond to each latch gear portion 63 formed on the drive side belt support 60a and the driven side belt support 60b, and is provided on the drive side belt support provided in the drive pulley device 20 ( 60a) attracts the primary chain belt 71, and the primary chain belt 71 thus attracted pulls the driven belt support 60b. The driven pulley device 30 provided with the ipsilateral belt support 60b is rotated while being pulled in the direction in which the drive pulley device 20 rotates.

3, 5, 6 (b) and 8 (b), the rear side of the secondary chain belt 72 is wound in the state, the latch gear portion formed on the drive side belt support 60a ( The inclination direction of the 63 is directed to the right direction in which the drive side belt support 60a rotates, so that the latch gear portion 63 of the drive side belt support 60a moves to the latch portion 73 of the secondary chain belt 72. ), The secondary chain belt 72 is wound on the primary chain belt 71 wound around the front drive and driven belt supports 60a and 60b and the drive and driven belt supports 60a and 60b. As a result of the rotation of the driven and driven pulley devices 20 and 30, the rotation is lost.

The following is a description of the case where the power of the engine is not transmitted, such as when the vehicle is going downhill or when the engine brake is used. In this case, the output shaft 84 connected to the wheels of the vehicle is rotated by the inertial force that the vehicle is driving. This output shaft is connected to the pulley shaft of the driven pulley device 30 and the respective gears 87, 85 and 86 so that the driven pulley device 30 rotates.

When the driven pulley device 30 rotates in this way, the bottom of the driven side belt support 60b installed in the driven pulley device 30 as shown by the arrows shown in FIGS. 5, 6 (B) and 8 (B). The gear gear 63 pushes the latch portion 73 of the secondary chain belt 72, and the secondary chain belt 72 is pushed so that the secondary chain belt 72 of the secondary chain belt 72 is moved from the driving pulley device 20 side. The latch portion 73 pushes the latch gear portion 63 of the drive pulley device 20 engaged therewith, so that the drive pulley device 20 rotates in the same direction as the driven pulley device 30 rotates. will be.

At this time, the primary chain belt 71 of the front side is driven pulley device when the driven pulley device 30 is rotated in the forward direction as shown in Figs. 5, 6 (A), 8 (A). The latch gear portion 63 of the driven belt support 60b provided in the 30 is installed in a direction in which the latch portion 73 of the primary chain belt 71 cannot be pushed in the forward direction so that the secondary chain belt ( 72 will be inclined along the rotation of the drive and driven pulley device (20, 30) to rotate on the side installed.

Therefore, the belt support 60, which is a feature of the present invention, is formed by front and rear latch gear portions 61 and 62 divided into front and rear, and the first and second chain belts on the front and rear sides of the belt support 60. As the 71 and 72 are wound around each other, when the vehicle is normally driven by the power of the engine, the driving pulley device 20 rotates and the front latch gear 61 and the primary chain on the front side are rotated. The belt 71 can be pulled and pushed to change the rotational force, and when the downhill is used or the engine brake is used, the rotational force of the wheel that is rotated by the inertia force that the vehicle is driving causes the driven pulley device 30 to rotate. As the rotational force of the rear side, the rear latch gear portion 62 and the secondary chain belt 72 are pushed to change the rotational force.

In addition, the belt support 60 is manufactured by cutting, and when the belt support 60 is integrally manufactured, the teeth of the latch gear 63 are formed in opposite directions to the main body 66 formed to be inclined. Not only is it difficult to process by cutting, there is a problem that the cutting time and the cutting cost is excessively required accordingly.

By the way, this embodiment of the present invention shown in FIG. 2 is designed to install the front and rear bodies 61a and 62a prefabricated to the main body 66 on which the insertion portion 67 is formed, so that the front and rear latches are difficult to process. After separately fabricating the front and rear bodies 61a and 62a separately forming the sections 61 and 62, it is possible to shorten the difficulty and the processing time of the work by separately installing the front and rear bodies 61a and 62a separately. This improves productivity.

And the chain belt 70 described above is installed a plurality of chain belt pieces 74 are continuously connected to the pin 75 as shown in Figure 18, the chain belt piece 74 is pin 75 in the front and rear ends The pin fitting portion 76 having the pin hole 76a into which the pin is inserted is formed, and the latches corresponding to the latch gear portions 63 of the belt support 60 are caught between the front and rear pin fitting portions 76. As the portion 73 is formed, accurate power transmission is possible by the precise latching contact with the latch gear portion 63 of the belt support 60, and the assembly work for the chain belt 70 installed in the present invention is simple. There is an advantage.

1: continuously variable transmission 2: transmission basic body 20: drive pulley device
30: driven pulley device 40: pulley shaft 42: oil entry port
44: piston 45: spiral protrusion 46: pulley plate mounting
47: cylinder 48: primary euro 49: secondary euro
50: pulley plate 51: slide groove 52: shifting plate
53: involute curve groove 54: feeder 55: spiral groove
60: belt support 61: front latch gear portion 62: rear latch gear portion
63: latch gear portion 64: guide projection 65: slide guide portion
70: latching chain belt 71: primary chain belt 72: secondary chain belt
73 latch portion 74 chain belt piece 75 pin
76: pin fitting portion 80: input shaft 81: drive gear
82: front connection gear 83: drive pulley front gear 84: output shaft

Claims

A latch chain belt 70 is wound around the drive pulley device 20 that receives power from the input shaft 80 and the driven pulley device 30 that transmits power to the output shaft 84. And the driven pulley device (20, 30) is a front and rear pulley plate 50 is formed radially outside the center of the pulley shaft 40, the radially formed a plurality of slide grooves 51, front and rear In the pulley shaft 40 on the outer side of the pulley plate 50, a shift plate 52 having an involute curve groove 53 corresponding to each slide groove 51 is rotated outside the pulley shaft 40. The chain is installed between the front and rear pulley plate 50 so that both ends of the belt support 60 penetrate the slide groove 51 and are guided to the involute curve groove 53 of the shift plate 52. In the belt continuously variable transmission,
The belt support 60 is divided into front and rear to form the front and rear latch gear portions 61 and 62 on the upper surface of the body 66, but the teeth of the front and rear latch gear portions 61 and 62 are opposite to each other. The teeth of the front and rear latch gear portions 61 and 62 which are formed in the direction and formed on the driving side and the driven side belt support 60a, 60b are formed on the driving side belt support 60a while being formed in opposite directions. It is characterized in that the front and rear latch gear parts 61 and 62 and the front and rear latch gear parts 61 and 62 formed on the driven belt support 60b are arranged to be shifted without being placed in a straight line. Belt support of chain belt continuously variable transmission.

According to claim 1, wherein the main body 66 of the belt support 60 is formed obliquely between the front and rear pulley plate 50 in the form of a helical gear in the direction of the center line of the pulley shaft 40 and inclined direction. Belt support of the chain belt continuously variable transmission characterized in that it is installed.

3. The belt support (60) according to claim 1 or 2, wherein the belt support (60) includes a front body (61a) having a front latch gear portion (61) and a rear body (62a) having a rear latch gear portion (62). The belt support of the chain belt continuously variable transmission, characterized in that is attached to the main body 66 detachably.

4. The body of claim 3, wherein both ends of the main body 66 are formed with guide protrusions 64 to be guided into the involute curve groove 53 of the transmission plate 52, and the main body inside the two guide protrusions 64. A slide guide portion 65 guided to the slide groove 51 of the pulley plate 50 is formed on the 66, and the main body 66 between the slide guide portions 65 on both sides has front and rear bodies 61a and 62a. Belt support of the chain belt type continuously variable transmission, characterized in that the insertion portion 67 is inserted into the installation.