JP2005337360A - Gear having belt-type continuously variable transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gear having a belt-type continuously variable transmission of reducing vibrations and noises by arranging respective components such as a moving back and forth switching mechanism, a pulley, and a starting unit in consideration of producing causes of vibrations and noises. <P>SOLUTION: In the gear having a belt-type continuously variable transmission arranging a driving pulley 31 on an extension axis of an output axle of a power source 1, the gear comprises intermittent transmitting mechanisms 8 and 9 transmitting torque by accompanying intermittent engagement or contact between components, and a continuous transmitting mechanism 10 transmitting torque by continuing a contact state between the components and transmitting torque via fluid. Further, the intermittent transmitting mechanisms 8 and 9 and the continuous transmitting mechanism 10 are arranged in sequence of the intermittent transmitting mechanisms 8 and 9 and the continuous transmitting mechanism 10 from a near side of the power source 1 on the extension axis of the output axle. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  In the present invention, an intermittent transmission mechanism that transmits torque with intermittent engagement or contact between constituent members, and the constituent members continue to be in contact with each other to transmit torque, or transmit torque through a fluid. The present invention relates to a transmission device having a belt-type continuously variable transmission including a continuous transmission mechanism.

  A belt type continuously variable transmission is an example of a continuously variable transmission that can control the gear ratio steplessly (continuously). This belt-type continuously variable transmission has two rotating members arranged in parallel, and a primary pulley and a secondary pulley separately attached to each rotating member. Both the primary pulley and the secondary pulley are configured by combining a fixed sheave and a movable sheave, and a V-shaped groove is formed between the fixed sheave and the movable sheave.

  In addition, a belt is wound around the groove of the primary pulley and the groove of the secondary pulley, and a hydraulic chamber for applying an axial pressing force to the belt support member of the primary pulley and the belt support member of the secondary pulley is separately provided. ing. When the groove width of one of the pulleys is adjusted by controlling the hydraulic pressure of one of the hydraulic chambers, the belt wrapping radius for each pulley changes due to the change in the groove width of the pulley. To do. That is, the rotation speed ratio between the primary shaft and the secondary shaft, that is, the gear ratio is controlled. Further, by controlling the belt winding radius, the belt tension changes, and the torque transmitted between the primary pulley and the secondary pulley is adjusted.

  In the transmission device having the belt-type continuously variable transmission as described above, when the engine torque is transmitted to the belt-type continuously variable transmission as a component other than the belt-type continuously variable transmission, A damper mechanism is provided for reducing vibration and noise caused by fluctuations in engine torque. In addition, a starting mechanism is provided for controlling the torque capacity between the crankshaft of the engine and the input shaft of the belt type continuously variable transmission, that is, the primary shaft, so as to start smoothly. Furthermore, since the rotational direction of the engine is limited to one direction, the forward / reverse switching mechanism that selectively switches the rotational direction of the engine between a rotational direction in which the vehicle is advanced and a rotational direction in which the vehicle is moved backward. Is provided.

  Regarding such a component, a transmission having a belt-type continuously variable transmission including a torque converter as a starting mechanism and a forward / reverse switching mechanism configured by a double pinion type planetary gear device and a forward clutch and a reverse brake. An example of the apparatus is described in Patent Document 1. A transmission device having a belt-type continuously variable transmission described in Patent Document 1 includes an engine, a damper mechanism, a torque converter (starting mechanism), a forward / reverse switching mechanism, on the extension axis of the primary shaft, Each component is arranged in the order of the primary pulley.

Further, in Patent Document 2, components are arranged in the order of an engine, a damper, a drive pulley (primary pulley), and a forward / reverse switching mechanism from the engine side on the extension axis of the input shaft (primary shaft). An example of a transmission device having a belt type continuously variable transmission in which a starting clutch (starting mechanism) is disposed on the extended axis of the (secondary shaft) on the side closer to the engine of the driven pulley (secondary pulley) Is described. Patent Document 3 describes an example of a transmission device having a belt-type continuously variable transmission in which a start clutch is disposed at a shaft end opposite to an engine of a secondary pulley (secondary pulley).
JP 2001-323978 A Japanese Patent No. 2687041 Japanese Patent Laid-Open No. 5-196131

  In general, the main sources of vibration or noise generated during operation of a belt-type continuously variable transmission include a pulley and a belt wound around the pulley, and a gear that is a component of a forward / reverse switching mechanism. The belt wound around the pulley has a large number of metal belt elements that are bundled in an annular shape by a hoop, and when the belt is wound around the pulley, the plurality of belt elements sequentially contact the belt winding groove of the pulley. However, vibrations and sounds are generated by the intermittent contact. Further, when the gear mechanism constituting the forward / reverse switching mechanism is driven and the gears are meshed with each other, vibration and sound are generated by repeated contact between the meshing side tooth surfaces.

  By the way, as described above, in the transmission device having the belt-type continuously variable transmission described in Patent Document 1 or Patent Document 2 described above, the primary pulley or the forward / reverse switching mechanism is an engine on the extension axis of the primary shaft. It is arrange | positioned in the case edge part on the opposite side (namely, side far from an engine). For this reason, a pulley or a forward / reverse switching mechanism that is likely to be a source of vibration and sound is placed at the case end on the opposite side of the engine, so that the vibration and sound generated by them can be transmitted to the outside through the case end. In some cases, it becomes easy to cause unpleasant vibration and noise.

  The present invention has been made against the background described above, and each component of a transmission device having a belt type continuously variable transmission such as a forward / reverse switching mechanism, a pulley, or a starting device is vibrated on the primary shaft side. Another object of the present invention is to provide a transmission device having a belt-type continuously variable transmission that can reduce vibration and noise by being arranged in consideration of noise generation factors.

  In order to achieve the above object, according to the first aspect of the present invention, a drive pulley and a driven pulley around which a belt is wound are disposed in parallel to each other, and the drive pulley is disposed on an extension axis of an output shaft of a power source. In the transmission device having the belt-type continuously variable transmission, the intermittent transmission mechanism that transmits torque with intermittent engagement or contact between the components and the components continue to be in contact with each other to transmit torque. Or the intermittent transmission mechanism and the continuous transmission mechanism on the extension axis of the output shaft from the side close to the power source, the intermittent transmission mechanism. The mechanism and the continuous transmission mechanism are arranged in this order.

  According to a second aspect of the present invention, in the first aspect of the invention, a damper mechanism is provided between the power source and the intermittent transmission mechanism, and the intermittent transmission mechanism performs a differential action with each other. And a planetary gear device comprising a second element and a third element, and an engagement device for selectively connecting any two of these three elements, wherein the first element comprises It is connected to the damper mechanism, and the second element and the third element are connected to the engagement device.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the continuous transmission mechanism is disposed at an end portion on a side farther from the power source on an extension axis of the output shaft. To do.

  According to the first aspect of the present invention, among the components of the transmission device having the belt-type continuously variable transmission, vibrations such as a forward / reverse switching mechanism constituted by a gear device, a drive pulley around which the belt is wound, etc. The intermittent transmission mechanism, which is likely to be a source of noise and noise, is arranged on the output shaft of the power source, that is, on the side closer to the power source on the extension axis of the drive pulley shaft, for example, a vibration such as a starting clutch, a torque converter or an oil pump. A continuous transmission mechanism that hardly generates noise is disposed on the extended axis of the drive pulley shaft on the side far from the power source. Therefore, leakage of gear noise, belt noise, and the like caused by the forward / reverse switching mechanism and the belt-type continuously variable transmission can be suppressed, and a device with high silence and low vibration can be obtained. Further, by disposing constituent elements such as an intermittent transmission mechanism and a continuous transmission mechanism on the drive pulley side where the acting torque is smaller than the driven pulley side, it is possible to avoid an increase in the size of those constituent elements.

  According to the invention of claim 2, the damper mechanism is connected to the first element, for example, the input element of the planetary gear device constituting the intermittent transmission mechanism, and the second element other than the input element and the third element Engaging devices are provided on the elements to connect and release them. Therefore, the mass of the planetary gear device connected to the damper mechanism is reduced, and it is possible to avoid the occurrence of resonance in the normal rotation region of the power source by adding a large mass to the damper mechanism. As a result, a device with small vibration can be obtained.

  According to the invention of claim 3, the continuous transmission mechanism is disposed at the end portion on the side far from the power source on the extension axis of the drive pulley shaft. That is, a continuous transmission mechanism that hardly generates vibrations and noises is disposed at an end portion far from the power source in which vibrations and sounds are easily transmitted to the outside. Therefore, vibration and sound leakage can be suppressed, and a device with high silence and low vibration can be obtained.

  Next, the present invention will be specifically described with reference to the drawings. FIG. 1 is a skeleton diagram of an FF vehicle (front engine front drive; front-wheel drive vehicle for engine front) to which the present invention is applied. In FIG. 1, reference numeral 1 denotes a vehicle power source. The power source 1 is an internal combustion engine, specifically, an engine such as a gasoline engine, a diesel engine, or an LPG engine, or an electric motor such as a motor or a motor / generator. Used. In the following description, the case where a gasoline engine is used for the sake of convenience will be described using the power source 1 as the engine 1.

  A crankshaft 2 of the engine 1 is disposed in the vehicle width direction. A transaxle 3 is provided on the output side of the engine 1. The transaxle 3 includes a transaxle housing 4 attached to the rear end side of the engine 1, a transaxle case 5 attached to an open end of the transaxle housing 4 opposite to the engine 1, and a transaxle case 5. The transaxle housing 4 has a transaxle rear cover 6 attached to an opening end opposite to the transaxle housing 4.

  A damper mechanism 7 is provided in the transaxle housing 4, and a forward / reverse switching mechanism 8, a belt type continuously variable transmission 9, and a starting clutch are provided in the transaxle case 5 and the transaxle rear cover 6. 10 and a differential 11 are provided. Each of these mechanisms and devices will be specifically described.

  First, a damper mechanism 7 is disposed in a path from the crankshaft 2 of the engine 1 to the first input shaft 12. The damper mechanism 7 is a mechanism for suppressing the fluctuation of the engine torque from being transmitted to the first input shaft 12 and reducing the vibration and noise caused by the fluctuation of the engine torque.

  A forward / reverse switching mechanism 8 is disposed in a power transmission path between the first input shaft 12 and a second input shaft 22 and a starting clutch 10 which will be described later, at a position opposite to the engine 1 of the damper mechanism 7. ing. The forward / reverse switching mechanism 8 is a mechanism that is employed when the rotational direction of the engine 1 is limited to one direction, and outputs the input torque as it is or reversely outputs it. It is configured. The forward / reverse switching mechanism 8 is mainly composed of a double pinion type planetary gear unit 13, a forward clutch 14, and a reverse brake 15.

  An example of the configuration of the forward / reverse switching mechanism 8 will be described. The planetary gear device 13 includes a sun gear 16 provided at the end of the first input shaft 12 on the belt-type continuously variable transmission 9 side, and an outer periphery of the sun gear 16. The ring gear 17 concentrically disposed with the sun gear 16, the pinion gear 18 meshed with the sun gear 16, the pinion gear 19 meshed with the pinion gear 18 and the ring gear 17, and the pinion gears 18, 19 are held rotatably. And a carrier 20 that holds the pinion gears 18 and 19 so as to be integrally revolved around the sun gear 16.

  And this carrier 20 and the 2nd input shaft 22 connected with the input side member 21 of the starting clutch 10 are connected, and the sun gear 16 and the 1st input shaft 12 connected with the damper mechanism 7 are connected. Yes. A reverse brake 15 that controls the rotation and fixation of the ring gear 17 is provided in the transaxle case 5. Further, a forward clutch 14 for connecting / disconnecting a power transmission path between the ring gear 17 and the carrier 20, that is, the second input shaft 22 is provided. The ring gear 17 is provided with an engaging / fixing member 23 in which a fixing member fixed / released by the reverse brake 15 and an engaging member engaged / released by the forward clutch 14 are integrated. Yes.

  Here, the forward clutch 14 and the reverse brake 15 can be constituted by a friction engagement device such as a friction clutch or a friction brake, but in addition to this, by a meshing engagement device (that is, for example, a dog clutch or a dog brake). It can also be configured. For example, by moving a sliding member that is spline-fitted to the ring gear 17 in one of its axial directions, it is engaged with an engaging portion integral with the carrier 20 and moved in the opposite direction to the carrier 20. The clutch and the brake may be configured to be disengaged from the integrated engagement (release the clutch) and to be engaged with a fixed portion constituting a part of the reverse brake 15.

  Accordingly, the planetary gear device 13 has three rotating elements, that is, a sun gear 16, a ring gear 17, and a carrier 20. In the above-described specific example, the sun gear 16 is an input element, the carrier 20 is an output element, and the ring gear 17 is a reaction force. It is an element.

  In the forward / reverse switching mechanism 8, when the forward position is selected, the forward clutch 14 is engaged and the reverse brake 15 is released, so that the ring gear 17 and the sun gear 16, that is, the first input shaft 12 are connected. Rotates together. When the ring gear 17 and the sun gear 16 rotate together, the carrier 20, that is, the second input shaft 22 also rotates together with the ring gear 17 and the sun gear 16. That is, the first input shaft 12 and the second input shaft 22 are directly connected.

  In this state, when the torque of the engine 1 is transmitted to the first input shaft 12 via the damper mechanism 7, the first input shaft 12, the ring gear 17, the carrier 20, the sun gear 16 and the second input shaft 22 are moved. Rotates together. The torque transmitted to the second input shaft 22 is transmitted to the primary shaft 25 of the belt type continuously variable transmission 9 when the starting clutch 10 is engaged, and passes through the primary pulley 27, the belt 35, and the secondary pulley 28. Then, it is transmitted to the secondary shaft 26. The torque transmitted to the secondary shaft 26 is transmitted to the drive wheel 45 via the gear pair 44 and the differential 11.

  On the other hand, when the reverse position is selected, the forward clutch 14 is released, the reverse brake 15 is engaged, and the ring gear 17 is fixed. Then, the sun gear 16 rotates with the rotation of the first input shaft 12, and the carrier 20 rotates in the direction opposite to the rotation direction of the first input shaft 12 using the ring gear 17 as a reaction force element. As a result, rotating members such as a primary shaft 25 and a secondary shaft 30, which will be described later, rotate in the opposite direction to the forward position, and the vehicle moves backward.

  As described above, the forward / reverse switching mechanism 8 includes the planetary gear unit 13 having the three rotational elements of the input element (sun gear 16), the output element (carrier 20), and the reaction force element (ring gear 17), the forward clutch 14, and the reverse. And an engaging device for the brake 15. When the forward / reverse switching mechanism 8 is driven, that is, when the planetary gear unit 13 is driven, the meshing of the gears is sequentially repeated to transmit the torque. In other words, torque is transmitted with intermittent meshing or contact between meshing tooth surfaces of each gear. Therefore, the forward / reverse switching mechanism 8 constitutes an intermittent transmission mechanism in the present invention.

  The planetary gear unit 13 constituting the forward / reverse switching mechanism 8 includes a sun gear 16 that is an input element and a damper mechanism 7 that are connected via a first input shaft 12, and a carrier 20 that is an output element and a reaction force element. A forward clutch 14 for fixing and releasing the differential between them is provided on the ring gear 17. Therefore, the mass of the rotating element that rotates integrally with the damper mechanism 7 in the planetary gear device 13 is only the mass of the sun gear 16, and is likely to occur when the damper mechanism 7 rotates with a large mass added. The occurrence of resonance in the normal rotation range of the engine 1 can be avoided or the vibration can be suppressed.

  A position opposite to the forward / reverse switching mechanism 8 of the belt-type continuously variable transmission 9 disposed on the opposite side of the damper mechanism 7 of the forward / reverse switching mechanism 8, the second input shaft 22, the belt-type continuously variable A starting clutch 10 that connects / disconnects the power transmission path is provided in the power transmission path between the transmission 9 and the primary shaft 25. For example, a dry friction clutch can be applied to the starting clutch 10 and is constituted by an input side member 21 and an output side member 24. The input side member 21 and the second input shaft 22 are connected, and the output side member 24 and the belt type continuously variable transmission that is a hollow shaft that is coaxial with the second input shaft 22 and is relatively rotatable in the circumferential direction thereof. 9 primary shafts 25 are connected.

  In the starting clutch 10, the input side member 21 and the output side member 24 are connected to transmit power between the input side member 21 and the output side member 24, that is, between the second input shaft 22 and the primary shaft 25. When the path is completely connected, the power transmission path between the second input shaft 22 and the primary shaft 25 is connected while the input side member 21 and the output side member 24 slide together. In the “sliding engagement state”, the connection between the input side member 21 and the output side member 24 is released, and the power transmission path between the second input shaft 22 and the primary shaft 25 is completely cut off. It is controlled to be selectively set to “state”.

  When the stopped vehicle starts, the engagement state of the start clutch 10 is first shifted from the “completely released state” to the “sliding engagement state”. Then, the degree of engagement is gradually increased in the “sliding engagement state”, and finally the state is shifted to the “complete engagement state”. Therefore, the power of the engine 1 that has been shut off is transmitted to the primary shaft 25 so as to gradually increase its transmission capacity, and the vehicle can be started smoothly.

  As described above, when the operation of the starting clutch 10 is set to the “completely released state”, the input side member 21 and the output side member 24 are completely released, and they idle. When the “sliding engagement state” and the “complete engagement state” are set, the input side member 21 and the output side member 24 are brought into contact with each other while sliding, or are brought into complete contact with each other to be connected. Communicated. That is, in the forward / reverse switching mechanism 8 described above, torque is transmitted with intermittent meshing between the gear meshing side tooth surfaces, whereas in the starting clutch 10, the “sliding engagement state”. Alternatively, as long as the “completely engaged state” is set, the contact state between the input side member 21 and the output side member 24 is continued and torque is transmitted. Therefore, the above-mentioned forward / reverse switching mechanism 8 constitutes the intermittent transmission mechanism in the present invention, whereas this starting clutch 10 constitutes the continuous transmission mechanism in the present invention.

  A belt type continuously variable transmission 9 having a primary shaft 25 connected to the output side member 24 is disposed at a position between the starting clutch 10 and the forward / reverse switching mechanism 8 described above. The belt-type continuously variable transmission 9 is disposed concentrically with the second input shaft 22 described above, and is disposed in parallel with the primary shaft 25 supported by the bearings 26 and 27 and the primary shaft 25. , 29 and a secondary shaft 30. A primary pulley 31 is provided on the primary shaft 25, and a secondary pulley 32 is provided on the secondary shaft 30 side. The primary pulley 31 has a fixed sheave 33 integrally formed on the outer periphery of the primary shaft 25 and a movable sheave 34 configured to be movable in the axial direction of the primary shaft 25. A V-shaped belt winding groove 35 is formed between the opposed surfaces of the fixed sheave 33 and the movable sheave 34.

  In addition, a hydraulic actuator (not shown) that moves the movable sheave 34 and the fixed sheave 33 closer to and away from each other by operating the movable sheave 34 in the axial direction of the primary shaft 25 is provided. On the other hand, the secondary pulley 32 has a fixed sheave 36 integrally formed on the outer periphery of the secondary shaft 30 and a movable sheave 37 configured to be movable in the axial direction of the secondary shaft 30. A V-shaped belt winding groove 38 is formed between the opposed surfaces of the fixed sheave 36 and the movable sheave 37. In addition, a hydraulic actuator (not shown) that moves the movable sheave 37 and the fixed sheave 36 closer to and away from each other by operating the movable sheave 37 in the axial direction of the secondary shaft 30 is provided. Further, a belt 39 is wound around the belt winding groove 35 of the primary pulley 31 and the belt winding groove 38 of the secondary pulley 32 configured as described above.

  Thus, in the belt type continuously variable transmission 9, the primary pulley 31 as the input member and the secondary pulley 32 as the output member, which are arranged in parallel with each other, are fixed to each other by the fixed sheaves 33 and 36 and the hydraulic actuator. The movable sheaves 34 and 37 are moved back and forth in the direction. Accordingly, the groove widths of the pulleys 31 and 32 are changed by moving the movable sheaves 34 and 37 in the axial direction, and accordingly the winding radius of the belt 39 as a transmission member wound around the pulleys 31 and 32 ( The effective diameters of the pulleys 31 and 32 change continuously, and the gear ratio changes steplessly.

  For example, the belt 39 is a belt in which a large number of metal pieces called elements are bound together by a metal band (hoop) in a state where the metal pieces are in close contact with each other and arranged in an annular shape. Therefore, when the belt type continuously variable transmission 9 is driven, the contact between the individual elements of the belt 39 and the belt winding grooves 35 and 38 of the pulleys 31 and 32 is sequentially repeated. In other words, torque is transmitted with intermittent contact of the pulleys 31 and 32 with the belt winding grooves 35 and 38. Accordingly, like the above-described forward / reverse switching mechanism 8, the pulleys 31 and 32 and the belt 39 of the belt-type continuously variable transmission 9 constitute an intermittent transmission mechanism in the present invention.

  A partition 40 is provided inside the transaxle case 5 between the forward / reverse switching mechanism 8 and the primary pulley 31, and an inner side of the transaxle case 5 between the primary pulley 31 and the starting clutch 10 is provided. A partition wall 41 is provided. Further, a partition wall 42 is provided inside the transaxle case 5 between the secondary pulley 32 and a gear pair 44 described later, and a partition wall 43 is provided inside the transaxle case 5 on the transaxle rear cover 6 side of the secondary pulley 32. Is provided.

  As described above, the partition walls 40, 41, 42, and 43 are provided inside the transaxle case 5 so as to sandwich the pulleys 31 and 32 of the belt type continuously variable transmission 9. A transmission device having a belt-type continuously variable transmission is operated while noise generated when the pulleys 31 and 32 of the transmission 9 and the belt 39 are in contact with each other is increased, and the rigidity of the transaxle case 5 is increased. The vibration which arises in the case can be reduced.

  A secondary shaft 26 that is an output member of the belt-type continuously variable transmission 9 is connected to the gear pair 44 and the differential 11, and the differential 11 is further connected to the drive wheels 45.

  As described above, the transmission device having the belt-type continuously variable transmission according to the present invention includes its constituent elements, that is, the forward / reverse switching mechanism 8 and the primary pulley 31 that constitute the intermittent transmission mechanism according to the present invention, The starting clutch 10 constituting the continuous transmission mechanism is arranged in the order of the starting clutch 10, the primary pulley 31, and the forward / reverse switching mechanism 8 from the end far from the engine 1 on the extension axis of the primary shaft 25. . That is, on the extended axis of the primary shaft 25, the continuous transmission mechanism and the intermittent transmission mechanism are arranged in this order from the end far from the engine 1.

  Therefore, a continuous transmission mechanism such as a starting clutch 10 that hardly generates vibration and sound is disposed at the end of the transaxle case 5 on the side opposite to the engine 1 where vibration and sound from the inside are easily transmitted to the outside. Intermittent transmission mechanisms such as the forward / reverse switching mechanism 8 and the primary pulley 25 that are likely to generate sound are arranged closer to the engine 1 inside the transaxle case 5 than the continuous transmission mechanism. Therefore, vibration and noise leaking outside through the transaxle case 5 can be reduced.

  Further, the starting device such as the starting clutch 10 that constitutes the continuous transmission mechanism in the present invention is on the extension axis of the primary shaft 25 in which the acting torque is smaller than the secondary shaft 30 in which a large torque acts when the reduction ratio is large. As a result, the torque capacity required for the starting device can be reduced compared to the case where the starting device is arranged on the secondary shaft 30 side. As a result, the starting device can be reduced in size or increased in size. Can be avoided.

  The present invention is not limited to the above-described specific example. In the specific example, an example of a start clutch configured by a dry friction clutch is shown as a continuous transmission mechanism in the present invention. In addition to the starting clutch, for example, a torque converter, a fluid clutch, or an oil pump can be used as the continuous transmission mechanism.

  In the specific example described above, as the intermittent transmission mechanism in the present invention, the sun gear serves as an input element, the carrier serves as an output element, the ring gear serves as a reaction force element, and the carrier and the ring gear are connected and released by the engaging device. However, the planetary gear device is not limited to this. For example, the carrier is an input element, the sun gear is an output element, and the ring gear is It may be a planetary gear device in which the carrier and the ring gear are connected and released by the engaging device as a reaction force element. Further, in the specific example, the planetary gear device is an example of a double pinion type planetary gear device, but may be a single pinion type planetary gear device.

It is a skeleton figure which shows the power transmission path | route of FF vehicle to which this invention is applied.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 7 ... Damper mechanism, 8 ... Forward / reverse switching mechanism, 9 ... Belt type continuously variable transmission, 10 ... Starting clutch, 25 ... Primary shaft, 30 ... Secondary shaft, 31 ... Primary pulley, 32 ... Secondary pulley, 39 ... Belt

Claims (3)

In a transmission device having a belt-type continuously variable transmission in which a driving pulley and a driven pulley around which a belt is wound are arranged in parallel to each other and the driving pulley is arranged on an extension axis of an output shaft of a power source.
An intermittent transmission mechanism that transmits torque with intermittent engagement or contact between the constituent members, and a continuous transmission mechanism that transmits torque while the constituent members continue to be in contact with each other, or transmits torque via a fluid, With
The intermittent transmission mechanism and the continuous transmission mechanism are arranged in the order of the intermittent transmission mechanism and the continuous transmission mechanism on the extension axis of the output shaft from the side close to the power source. A transmission device having a belt-type continuously variable transmission. A damper mechanism is provided between the power source and the intermittent transmission mechanism,
The intermittent transmission mechanism selectively selects the first element, the second element, and the planetary gear device including the third element that perform a differential action, and any two of these three elements. An engagement device for coupling is provided, wherein the first element is coupled to the damper mechanism, and the second element and the third element are coupled to the engagement device. A transmission device comprising the belt type continuously variable transmission according to Item 1.   The transmission having a belt-type continuously variable transmission according to claim 1 or 2, wherein the continuous transmission mechanism is disposed at an end portion on the extended axis of the output shaft on a side far from the power source. apparatus.

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