WO2013085288A1

WO2013085288A1 - Transmission, in-wheel drive system comprising same, and method for manufacturing transmission

Info

Publication number: WO2013085288A1
Application number: PCT/KR2012/010504
Authority: WO
Inventors: 김영준; 김탁현; 이동성; 이정인; 최준만; 박동규; 이동진
Original assignee: 주식회사 센트랄
Priority date: 2011-12-07
Filing date: 2012-12-06
Publication date: 2013-06-13
Also published as: JP2017138002A; CN103975178A; CN103975178B; JP2015507147A

Abstract

The present invention relates to a transmission, an in-wheel drive system comprising same, and a method for manufacturing a transmission. One embodiment of the transmission according to the present invention comprises a clutch disk having on one surface a plurality of grooves. Also comprised can be a plurality of driving force transfer bodies, which are inserted into each of the plurality of grooves of the clutch disk, respectively, so that a portion of the driving force transfer bodies are exposed on the one side of the clutch disk.

Description

Transmission and vehicle in-wheel drive system and transmission method comprising the same

The present invention relates to a transmission apparatus and an in-wheel drive system for a vehicle configured to include the same, and more particularly, to a transmission and a vehicle in-wheel drive system including the same, which can be easily miniaturized and reduce shift shock.

The present invention also relates to a method of manufacturing the transmission. More particularly, the present invention relates to a method for manufacturing a transmission that can simplify the manufacturing process of the transmission and improve assembly.

In general, electric vehicles are powered by a battery-powered motor, the vehicle weighs less than conventional fossil fuel vehicles or natural gas vehicles, and is also relatively small in size.

As the development requirements of the electric vehicle, the reduction of the weight and size of the vehicle and the development of a transmission suitable for the electric vehicle, along with the improvement of the driving speed and fuel economy, the improvement of the charging method, and the life of the battery have been studied as the main tasks.

The transmission of a general fossil fuel vehicle or a natural gas vehicle has a variety of structures, but a clutch and a plurality of gears are generally engaged with each other so that gears of an appropriate ratio are engaged with the main gear according to acceleration or deceleration operation of the vehicle. In addition, the structure for linearly moving the clutch between the gears is complicated. Such a structure has a large weight and volume, and a fastening shock occurs because power is transmitted by the gears engaged.

As such, when the conventional transmission device having a large weight and volume and a large shifting shock is applied to an electric vehicle, the distance that can be driven by one charge by the transmission is reduced, and there is a problem that the top speed is lowered. There is a problem that is not easy to apply.

The technical problem to be solved by the present invention in view of the above problems, to provide a transmission device that can minimize the weight and volume and an in-wheel drive system for a vehicle comprising the same.

In addition, the technical problem to be solved by the present invention in view of the above problems, to manufacture a clutch disk body to provide a clutch disk and a method for manufacturing the same that can reduce the manufacturing time and cost by using a press method. There is a purpose.

Another object of the present invention is to provide a clutch disk and a method of manufacturing the same, which can simplify the structure by integrating the shape of the plate spring on the fixed plate without using the plate spring.

One embodiment of the transmission according to the present invention includes a clutch disk having a plurality of grooves on one surface.

A plurality of power transmission bodies may be inserted into the plurality of grooves of the clutch disc so that a portion thereof is exposed on the one surface of the clutch disc.

In addition, a power train mounter for mounting the power train on the clutch disk while limiting movement in the axial direction with respect to the rotation axis of the clutch disk may be included.

The clutch disk may be connected to a driving shaft that receives rotation torque from a power source and rotates. The plurality of grooves may be arranged in a circular shape on the clutch disk.

It may further include an input gear that is selectively coupled to the power transmission body to receive power.

A plurality of grooves of the clutch disc or the structure or shape of the power carrier mounter may be made to restrain the rotation of the power train having the rotation axis in the radial direction of the clutch disc. In this way, by restricting the rotation of the power transmission body, the structure of the power transmission mounter can be simplified, and the durability of the power transmission body can be easily maintained and the durability can be improved.

The shape of the groove of the clutch disc may be shaped in such a way as to not allow such rotation with respect to the power transmission body. This can be achieved by designing the power train not to rotate when designing the shape of the groove of the clutch disc corresponding to the shape of the power train. For example, the inserted portion of the power train may not be rotated by interfering with the surfaces by the action of the peripheral surface or the bottom surface of the groove of the clutch disk.

Alternatively, the power train mounter may be coupled to the power train to constrain its rotation. For example, the mount may be inserted into and coupled to the power train to constrain the rotation of the power train.

The power carrier mount may have a structure in which one end thereof is coupled to the power train while passing through a bottom surface of the groove of the clutch disc.

In this case, the other end of the power carrier mounter may have a structure that does not protrude on the opposite side of the surface (referred to as the surface represented by one surface) in which the groove of the clutch disk is formed. This non-protruding structure is advantageous in preventing problems due to interference with other components.

On the other hand, the structure or shape of the plurality of grooves or the power carrier mounter of the clutch disk may be made to allow the rotation of the power transmission body in the radial direction of the clutch disk. This allowance of rotation helps to reduce wear of the power train when engaging the clutch disc and the input gear, and can also help to mitigate impact.

For example, the power train has a ball shape, and the groove of the clutch disc has an approximately hemispherical shape, so that the power train can be allowed to rotate in the groove of the clutch disc.

The portion protruding from the clutch disk of the power transmission body may be shaped such that its circumference becomes smaller so as to be far from the clutch disk. The power carrier mount may include a mounting plate having a through groove having a size enough to penetrate only a part of the protruding portion of the power train. The circumferential surface of the through groove of the mounting plate may be in contact with the outer surface of the power carrier to allow rotation of the power carrier but limit the separation in the axial direction.

The circumferential surface of the through groove may be made to include an inclined surface from the beginning of manufacture. Alternatively, the circumferential surface may be formed by deforming inward in the radial direction in a state in which the power transmission body and the mounting plate are installed in the claditchsk. The deformation in the radial direction of the circumferential surface may be made until it is of a magnitude that limits the axial movement of the power train. In addition, the deformation in the radial direction of the circumferential surface may be achieved by axially compressing the periphery of the through groove in a state in which the power transmission body and the mounting plate are installed in the claditchsk.

The mounting plate may be secured to the clutch disc via removable means. This detaching means makes it possible to attach and detach without damaging the mounting plate or clutch disk.

Here, the detachable means may be a structure that is inserted into the mounting plate and the clutch disk so as not to protrude onto the outer surface of the mounting plate and the clutch disk.

On the other hand, the mounting plate may be installed on the clutch disk by caulking. To this end, the clutch disk may include a caulking portion surrounding the outer circumferential surface of the mounting plate. In addition, the clutch disk may include a caulking portion surrounding the inner circumferential surface of the mounting plate for a robust installation.

In the above, an example in which the power transmission body is mounted on one surface of the clutch disk is described, but the power transmission body may be installed on both sides of the clutch disk. Thus, clutching can be achieved through both sides of the clutch disc.

In addition, the clutch disk may be connected to the driving shaft to be slidable on the rotation shaft of the driving shaft.

In addition, a push rod for sliding the clutch disk as described above may be further included. The push rod may be inserted into the hollow portion of the drive shaft while penetrating the input gear and coupled to the clutch disk.

On the other hand, one embodiment of the vehicle in-wheel drive system according to the present invention includes a transmission as described above. The drive shaft of the transmission device may be connected to the drive motor. In addition, the transmission may be connected to the vehicle wheel to transmit the rotational power. Thus, the rotational force of the drive motor is transmitted to the vehicle wheel via the transmission.

Another embodiment of the shifting apparatus according to the present invention includes a plurality of first clutch balls which engage with grooves of the first input gear and transmit power of a motor, and grooves of a second input gear installed to face the first input gear. It may include a plurality of second clutch ball meshed to transfer the power of the motor.

In addition, one side of the first clutch ball is locked by the locking hole to prevent the separation may include a first mounting plate formed at regular intervals along the circumference of the disk-shaped.

Then, a first ball insertion hole is formed so that the other side of the first clutch ball is inserted and penetrates at a position corresponding to the engaging hole of the first mounting plate, and the second ball insertion hole is penetrated between the first ball insertion holes. A ball insertion hole is formed, and may include a clutch disk body to which the first mounting plate is fixedly coupled to one side.

In addition, it may include a second mounting plate fixedly coupled to the other side of the clutch disk body, the plurality of engaging holes formed in a position corresponding to the second ball insertion hole.

Here, a spring portion bent in a plate shape toward the clutch disc body is formed between the engaging holes of the first mounting plate, and the second clutch ball may be elastically supported by the spring portion.

Similarly, a spring portion bent in a plate shape toward the clutch disc body is also formed between the engaging holes of the second mounting plate, so that the first clutch ball can be elastically supported.

In this case, a bent portion bent in a 'b' shape may be formed at an edge of the first mounting plate and the second mounting plate, and grooves into which the bent portions are inserted may be formed at both side edges of the clutch disc body. A caulking portion formed at an edge of the clutch disk body is formed to press the bent portion so that the first mounting plate, the second mounting plate and the clutch disk body can be coupled to each other.

In one embodiment of the method of manufacturing a transmission device according to the present invention, a plurality of first clutch balls which are engaged with a groove of a first input gear and transmit power of a motor and a groove of a second input gear installed to face the first input gear are provided. And engaging with the second clutch ball may transmit a power of the motor.

And it may include the step of preparing a first mounting plate formed at a predetermined interval along the circumference of the engaging hole is caught one side of the first clutch ball.

And it may include the step of preparing a second mounting plate formed at a predetermined interval along the periphery of the engaging hole that one side of the second clutch ball is engaged.

In addition, the first ball insertion hole is formed in a position corresponding to the engaging hole of the first mounting plate, the other side of the first clutch ball is inserted, and formed in a position corresponding to the engaging hole of the second mounting plate The method may include preparing a clutch disc body in which a second ball insertion hole formed between the first ball insertion holes is formed by press working so that the other side of the second clutch ball is inserted.

Finally, the first mounting plate and the second mounting plate are inserted into the clutch disc body with the first clutch ball being inserted into the first ball insertion hole and the second clutch ball being inserted into the second ball insertion hole, respectively. It may include the step of coupling to both sides of the.

Here, the edges of the first mounting plate and the second mounting plate may have a bent portion bent in a 'b' shape, and grooves into which the bent portions are inserted may be symmetrically formed at both side edges of the clutch disc body. The first mounting plate, the second mounting plate and the clutch disk body may be coupled to each other by caulking an edge of the clutch disk body formed by the groove.

In addition, the first ball insertion groove and the second ball insertion groove may include a clutch disk body formed on both sides at regular intervals alternately along the circumference of the edge so that the first clutch ball and the second clutch ball are respectively inserted.

And a ring-shaped first mounting ring fixed to one side of the clutch disc body to fix the first clutch ball between the clutch disc body.

It may include a ring-shaped second mounting ring fixed to the other side of the clutch disk body to secure the second clutch ball between the clutch disk body.

In this case, the edge portion of the clutch disk body forms a caulking portion so that the first mounting ring and the second mounting ring can be fixed to both sides of the clutch disk body.

The first ball insertion groove and the second ball insertion groove may be alternately positioned on a circumference having a predetermined radius from the central axis of the clutch disc body.

In addition, the first mounting ring and the edge of the second mounting ring may be formed in the bent portion bent in the 'b' shape, grooves in which the bent portion is inserted in both side edges of the clutch disk body may be formed, The first mounting ring, the second mounting ring and the clutch disk body may be coupled to each other by being formed at a position where the caulking portion presses the end portion of the bent portion.

The transmission of the electric vehicle of the present invention can simplify the structure and minimize the volume and weight, and the clutch disc is not engaged with the gear to transmit power through the disc surface of the clutch disc.

The transmission according to the present invention can reduce the manufacturing time and cost by manufacturing the clutch disc body using the press method, and can simplify the structure by integrating the shape of the plate spring on the fixed plate without using the plate spring. It can be effective.

According to the present invention, there is an effect of simplifying the operation of fixing the clutch ball to the clutch disk body by coupling the clutch disk body and the fixing plate or the fixing ring by the caulking process.

1 is a partially separated perspective view of a transmission in a preferred embodiment of the present invention.

2 is a cross-sectional view of the coupling state of FIG.

Figure 3 illustrates the coupling state of the hollow drive shaft, push rod and clutch disk in Figure 1

It is a cross-sectional block diagram for doing this.

4 is a cross-sectional view showing a detailed coupling relationship of the first clutch ball in FIG.

5 and 6 show embodiments of the connection structure of the push rod and the spoke (or clutch disk).

7 shows an in-wheel drive system for a vehicle according to an embodiment of the present invention.

8 to 10 show another embodiment in which the power transmission body is installed on the clutch disk.

11 and 12 show yet another embodiment in which the power transmission body is installed on the clutch disk.

13 and 15 show yet another embodiment in which the power transmission body is installed on the clutch disk.

Figure 16 is a cross-sectional view showing a transmission device to which the clutch disk of the present invention is applied.

17 is an exploded perspective view showing a clutch disk according to an embodiment of the present invention.

18 is a perspective view showing a state in which the clutch disk according to the present invention is assembled.

19 is a detailed cross-sectional view of the edge of the clutch disk of the present invention.

20 is an exploded perspective view showing a clutch disk according to another embodiment of the present invention.

21 is a plan view illustrating a state in which the clutch disk of FIG. 20 is assembled.

22 is a detailed cross-sectional view of the edge of the clutch disk of FIG. 20.

Hereinafter, with reference to the accompanying drawings, an embodiment of a transmission device according to the present invention will be described in detail. The transmission here can be used in a vehicle.

1 is a partially separated perspective view of a transmission apparatus according to a preferred embodiment of the present invention, and FIG.

1 and 2, respectively, the transmission according to the preferred embodiment of the present invention, while rotating by the drive motor 1, the outer surface includes a hollow drive shaft 10 formed with a spline 11 in the longitudinal direction do.

In addition, a push rod 20 is inserted into the hollow driving shaft 10 and moved in the longitudinal direction of the hollow driving shaft 10 by a stepping motor 400.

In addition, it includes a clutch disk 30 is engaged with the outer surface spline 11 of the hollow drive shaft 10 and rotates with the rotation of the hollow drive shaft (10). The clutch disc 30 is coupled to the push rod 20 through an opening 12 provided in a portion of the outer surface of the hollow drive shaft 10 and can be moved in the longitudinal direction of the hollow drive shaft 10. Here, the opening 12 is formed in the circumferential direction a plurality of through grooves formed along the axial direction.

In addition, a plurality of first clutch balls 31 having the same distance from the center of rotation of the hollow drive shaft 10 are disposed on one surface of the clutch disk 30, and on the other surface of the clutch disk 30. A plurality of second clutch balls 32 are disposed farther from the center of rotation of the hollow drive shaft 10 than the first clutch balls 31. The first clutch ball 31 and the second clutch ball 32 may be referred to as an embodiment of the power transmission body.

One side of the clutch disk 30, the hollow drive shaft 10 penetrates to the center, the first clutch ball 31 is inserted into the first rotation to receive the rotational force of the hollow drive shaft 10 The input gear 40 is located. And, the other side of the clutch disk 30, the hollow drive shaft 10 is inserted into the center, the second clutch ball 32 is inserted is rotated by receiving the rotational force of the hollow drive shaft 10 2 input gear 50 is located. The second input gear 50 has a larger diameter and a greater number of gear teeth than the first input gear 40.

The third gear 61 and the fourth gear 62 meshed with each of the first input gear 40 and the second input gear 50 constitute a first compound gear 60. The rotational speed of the first compound gear 60 is variable according to the gear ratio with the first input gear 40 or the second input gear 50. Although only one first compound gear 60 is illustrated in FIG. 1, three first compound gears 60 may be arranged at intervals of 120 degrees. Thus, the first input gear 40 and the second input gear 50 may be engaged with the sun gear. However, in the present embodiment, the first compound gear 60 does not revolve around the first input gear 40 and the second input gear 50. It is supported in a fixed position by the bearing structure of the housing and rotates in place.

The third gear 61 has a larger diameter and more gear teeth than the fourth gear 62. In addition, the number of gear teeth of the third gear 61 is smaller than that of the second input gear 50. In addition, the third gear 61 may be made to have the same number of gear teeth as the first input gear 40.

The fifth input gear 70 is axially coupled to the second input gear 50. The fifth gear 70 has a shaft coupling portion 71 is formed for the shaft coupling as described above. The corresponding portion of the second input gear 50 is inserted into the shaft coupling portion 71 and is shaft-coupled. In addition, the fifth gear 70 has a hollow 73 inside. Thus, the push rod 20 passes through the fifth gear 70 and is connected to the stepping motor 400. The fifth gear 70 is supported by the bearing support structure of the housing at the shaft coupling portion 71 and the end portion 74 on the opposite side thereof.

Here, the fifth gear 70 is smaller in diameter and number of gear teeth than the second input gear 50.

The sixth gear 82 is engaged with the gear 72 formed on the outer circumference of the fifth gear 70. The sixth gear 82 together with the seventh gear 83 forms a second compound gear 80. The second compound gear 80 is supported by bearing support structures of the housing at both ends 81 and 84, respectively. Three second compound gears 80 are installed at intervals of 120 degrees to surround the gears 72 of the fifth gear 70.

The sixth gear 82 has a larger diameter and the number of gear teeth than the seventh gear 83 and a greater number of gear teeth than the fifth gear 70.

The fifth gear 70 and the second compound gear 80 have the same relationship as the sun gear and the planetary gear, but the second compound gear 80 rotates around the fifth gear 70 only. It is not idle.

On the other hand, the seventh gear 83 is meshed with the ring gear 90. The seventh gear 83 is engaged with the gear 91 formed on the inner circumference of the ring gear 90. The outer circumferential surface 92 of the ring gear 90 may be supported by a bearing support structure of the housing.

When the transmission is applied to a vehicle in-wheel drive system, the ring gear 90 may be connected to the vehicle wheel. Thus, the ring gear 90 can rotate with the vehicle wheel.

Hereinafter, the configuration and operation of the transmission configured as described above will be described in more detail.

First, the driving force of the drive motor 1 is transmitted to the hollow drive shaft 10 to rotate the hollow drive shaft (10).

The hollow drive shaft 10 has a pipe structure, and is provided with a plurality of splines 11 which are lines protruding in the longitudinal direction on the outer surface. In addition, a plurality of openings 12 open to a predetermined length are provided on a surface of the hollow drive shaft 10 in which the spline 11 is not formed.

3 is a cross-sectional view illustrating a coupling state of the hollow drive shaft 10, the push rod 20 and the clutch disk 30.

1, 2 and 3, respectively, the push rod 20 is inserted into the hollow drive shaft 10. The push rod 20 performs a linear reciprocating motion at regular intervals in the longitudinal direction of the hollow drive shaft 10 in the hollow drive shaft 10 by the action of the stepping motor 400 to generate a separate driving force. The stepping motor 400 may be fixedly installed in the housing.

Here, the stepping motor 400 may be replaced with a hydraulic cylinder. The end of the push rod 20 is coupled to the spoke 21 protruding to the outside through the opening 12 of the hollow drive shaft 10, the spoke 21 is on one surface of the clutch disk 30 It is inserted and fixed in the groove provided. The spokes 21 and the push rod 20 are connected in a non-rotating connection. For example, as shown in FIG. 5, the push rod 20 and the spokes 21 may be connected by rolling bearings 22, or may be connected by ball joints 22 as shown in FIG. 6.

The clutch disk 30 is formed with an uneven surface having an inner diameter such that the sprocket 11 is engaged with the outer side of the hollow drive shaft 10 on which the spline 11 is formed.

Accordingly, as the hollow drive shaft 10 rotates, the clutch disk 30 to which the spline 11 is engaged is also rotated at the same speed, and the clutch disk is driven by the axial movement of the push rod 20 during the rotation thereof. 30 can reciprocate in the longitudinal direction of the hollow drive shaft (10).

At this time, the spline 11 serves to guide the linear motion of the clutch disk 30 together with the role of transmitting the rotational force.

The first input gear 40 is positioned at a position adjacent to the left side of the clutch disc 30, and the second input gear 50 is positioned at a position adjacent to the right side of the clutch disc 30. The hollow drive shaft 10 penetrates the center of the first input gear 40 and is inserted into the center of the second input gear 50, but the rotational force of the hollow drive shaft 10 is the first input gear 40. ) And the second input gear 50 is spaced apart so as not to be directly transmitted.

In this state, when the clutch disc 30 is located between the first input gear 40 and the second input gear 50, the neutral force is applied, and the rotational force of the hollow drive shaft 10 is the first input gear. It is not transmitted to both the 40 and the second input gear 50.

When the push rod 20 moves to the left side, the clutch disc 30 moves to the first input gear 40 side, and the first clutch balls 31 of the clutch disc 30 are moved to the first input gear. The rotation force of the clutch disc 30 is inserted into the groove 41 provided in the 40 to be transmitted to the first input gear 40.

In the neutral state, the vehicle may be in a stopped state. Therefore, the surface and the groove of the first input gear 40 and the clutch disc 30 may be fastened in the stopped state, so there is no difference in the relative rotation speed and thus shifting is performed. Shock may not occur.

When the hollow drive shaft 10 reaches a constant speed and needs to be driven at a small gear ratio, the push rod 20 is retracted to move the clutch disc 30 to a neutral position adjacent to the second input gear 50. Move it. Then, according to the information of the angular velocity sensor of the second input gear 50 to adjust the speed of the hollow drive shaft 10 similarly and then slowly push the second clutch ball 32 is the groove of the second input gear in the state where the shift shock is small It may be seated at 51. The clutch disc 30 does not pass the driving force of the hollow drive shaft 10 through the reduction ratio between the first input gear 40 and the third gear 61 and the reduction ratio between the second input gear 50 and the fourth gear 62. The second input gear 50 may be rotated without deceleration.

On the other hand, when a case where a high reduction ratio is required, the push rod 20 moves forward to move the clutch disk 30 to a neutral position, which is an adjacent position of the first input gear 40. Then, according to the information of the angular velocity sensor of the first input gear 40 to adjust the speed of the hollow drive shaft 10 similarly and then slowly push the first clutch ball 31 of the first input gear in a small shift shock The clutch disk 30 is mounted in the groove 41 and the clutch disk 30 reduces the driving force of the hollow drive shaft 10 between the first input gear 40 and the third gear 61 and the second input gear 50 and the fourth gear. The second input gear 50 can be rotated in a decelerated state by the product of the reduction ratios between the 62.

The rotation of the second input gear 50 is transmitted to the ring gear 92 through the fifth gear 70 and the second compound gear 80. Here, the deceleration is further performed while passing through the fifth gear 70 and the second compound gear 80.

4 is a partial cross-sectional view of the clutch disc 30 at the portion where the first clutch ball 31 is inserted.

Referring to FIG. 4, the first clutch ball 31 is inserted into the groove 33 provided in the clutch disc 30, and the washer spring 34 is provided on the bottom surface of the groove 33 to provide the first clutch ball 31. ) Is in contact with the side surface of the first input gear 40 rather than being inserted into the groove 41 of the first input gear 40 to reduce the occurrence of shock and noise by the buffering action, the first input gear It is possible to reduce the wear of the 40 or the first clutch ball 31.

The first clutch ball 31 is fixed so as not to be separated by a ring cage 35 coupled to the side of the groove 33.

The second clutch ball 32 is also coupled to the buffering action by the washer spring in the same manner as the engagement state of the first clutch ball 31 described with reference to FIG.

Here, all the above-described gears may be spur gears or helical gears. Since helical gears have better bite rate than spur gears, they are smoothly rotated and quiet.

As such, the present invention can provide a transmission suitable for an electric vehicle by minimizing the weight and volume by simplifying the configuration of the transmission, thereby minimizing the generation of shift shock and noise.

On the other hand, Figure 7 shows an in-wheel drive system to which the above-described transmission device is applied.

The transmission used in the in-wheel drive system of FIG. 7 may differ slightly in form from the transmission described above. In particular, in the transmission used in the in-wheel drive system of Figure 7 the gears are all composed of helical gears.

First, the drive motor 1 is directly connected to the drive shaft 10 of the transmission. That is, the motor shaft of the drive motor 1 is directly connected to the drive shaft 10. The ring gear 90 of the transmission is connected to the vehicle wheel 4. Thus, the ring gear 90 is rotated together with the vehicle wheel (4). The tire 3 is coupled to the outer circumference of the vehicle wheel 4.

The ring gear 90 may be connected to the wheel disk of the vehicle wheel 4 by bolts.

The rotational torque of the drive motor 1 is transmitted to the transmission device through the drive shaft 10 and then to the vehicle wheel 4 through the ring gear 90.

Here, the drive motor 1 may be located outside the inner space of the vehicle wheel 4, as shown in FIG. The transmission device may be located at least two-thirds in the inner space of the vehicle wheel 4 and a part of the transmission protrudes in the vehicle width direction inward to be located outside the inner space of the vehicle wheel 4. Meanwhile, unlike the case of FIG. 7, the transmission may be made to be accommodated in the inner space of the vehicle wheel 4.

The drive motor 1 and the transmission can be installed compactly on the vehicle wheels, thus achieving a compact in-wheel drive system.

Hereinafter, a structure for mounting the power transmission body on the clutch disk will be described.

First, the embodiment shown in FIG. 4 will be described. The ring cage 35 of FIG. 4 may be referred to as an embodiment of the power carrier mounter. As shown in FIG. 4, the inner radius of the ring cage 35 is smaller than the radius from the center of the clutch disc to the outer surface of the first clutch ball 31. Thus, a part of the inner circumferential surface of the ring cage 35 is in contact with the outer surface of the first clutch ball 31 to limit the first clutch ball 31 is separated in the axial direction with respect to the rotation axis of the clutch disk. .

8 to 10 show another embodiment, which will be described below.

Here, the power transmission body 132 has a shape of a hemisphere 1322 is approximately a part, and the other portion has a cylindrical shape 1321. The cylindrical portion 1321 is formed with a screw groove 1323. Here, the hemispherical portion 1322 is a portion that is exposed while protruding to the outer surface of the clutch disk 130 is inserted into the corresponding groove (see 51 of FIG. 2) of the input gear (see 50 of FIG. 2).

The clutch disk 130 has a groove 1301 into which the cylindrical portion 1321 of the power transmission body 132 is inserted. The grooves 1301 are shaped in a cylindrical shape whose circumferential surface is substantially parallel in the axial direction. The bottom surface of the groove includes a through groove 1302.

Screw 135 is included as a power carrier mounter for mounting the power carrier 132 as described above to the clutch disk 130. The threaded portion of the screw 135 penetrates through the through groove 1302 of the clutch disk 130 and is inserted into and coupled to the screw groove 1323 of the power transmission body 132. At this time, the head of the screw 135 is seated in the inclined groove 1303 formed in the clutch disk 130. The axial length of the inclined groove 1303 is larger than the axial length of the head of the screw 135. Thus, the head of the screw 135 is completely inserted into the inclined groove 1303 does not protrude to the outer surface of the clutch disk 130.

The mounting structure of the power transmission body 132 does not allow the rotation of the power transmission body 132 as the axis of rotation r of the clutch disk 130 as shown in FIG. 10. This can be achieved by the action of the circumferential surface of the cylindrical portion 1321 of the power transmission body 132 and the corresponding groove 1301 of the clutch disk 130, but the screw 135 as the power transmission mounter. It can also be achieved by the action of).

This mounting structure is relatively simple and robust to help improve durability.

In addition, such a structure has the advantage that it can be removed without damage even after mounting the power train.

11 to 12 and 13 to 15 each show another embodiment. The commonality between the two embodiments here is that the power train can rotate autonomously in the radial direction (refer to the r direction in FIG. 10). In addition, it can also be said to include a mounting plate for limiting the deviation in the axial direction while allowing the rotation of the power transmission as described above. Each will be described in detail below.

First, the embodiment shown in FIGS. 11 and 12 includes a mounting plate 236, the power transmission body 232 has the form of a clutch ball 232, as in the case of the previous embodiment.

The mounting plate 236 has a number of through holes 2361 corresponding to the number of clutch balls 232. The inner diameter of one end 2361a of the through hole 2361 is larger than the diameter d1 of the clutch ball 232, and the inner diameter d2 of the other end 2361b is larger than the diameter d1 of the clutch ball 232. small. Thus, a part of the clutch ball 232 protrudes through the through hole 2361 but does not pass completely through. The clutch ball 232 is limited to be separated in the axial direction by a portion 2361b smaller than the diameter of the clutch ball 232 in the circumferential surface of the through hole 2361.

The mounting plate 236 as described above may be fixed to the clutch disk 230 through the screw 2360 as shown in FIGS. 11 and 12. Here, as shown in FIG. 12, the head of the screw 2360 does not protrude to the outer surface of the mounting plate 236 and is completely inserted to prevent interference with other components. In addition, the mounting plate 236 may be installed on the clutch disk by caulking. Installation by this caulking may be the same method as the method applied to the embodiments described later.

On the other hand, the clutch disk is formed with a groove 233 into which the clutch ball 232 is inserted, the circumferential surface of the groove 233 is formed to a wider diameter toward the outside. In addition, the groove may be a leaf spring 234 that is a shock absorbing means for buffering the clutch ball 232 in the axial direction.

11 and 12, reference numeral 235 denotes a mounting plate 235 for installing clutch balls such as the first ball clutches 31 in the foregoing embodiment.

Hereinafter, the embodiment illustrated in FIGS. 13 to 15 will be described.

In the embodiment herein, the mounting plate 336 likewise has a plurality of through grooves 3331. The diameter d4 of the through hole 3331 is larger than the diameter d3 of the clutch ball 452 at first, but later one end 3331a is deformed and smaller than the diameter d3 of the clutch ball 452. do. That is, as shown in FIG. 14, the clutch ball 452 is inserted into the corresponding groove of the clutch disc 450 and the mounting plate 336 is installed to the mounting plate 336 by using the jig 3360. By pressing circumferentially around the through hole 3361 in the axial direction, the other end 3331a of the through hole 3331 is deformed radially inward so that its diameter is reduced to become smaller. In this way, the clutch ball 452 is restricted from the clutch disc 450 by the one end 3331a of the through hole 3331 of which diameter is reduced.

The mounting plate 336 as described above may be fixed to the clutch disk by caulking, as shown in FIGS. 13 to 15. To this end, the clutch disk has a first caulking portion 4501a surrounding an outer circumference of the mounting plate 336. In addition, a second caulking portion 4501b surrounding the inner circumference of the mounting plate 336 may be included for firm fixing. In addition, the fixing installation of the mounting plate 336 may be achieved by screws as in the above-described embodiment.

Meanwhile, reference numeral 435 denotes a mounting plate 435 for installing clutch balls such as the first ball clutches 31 in the foregoing embodiment. Then, caulking portions 4502a and 4502b are formed in the clutch disk 450 to install the mounting plate 435 on the clutch disk 450.

The transmission device to which the clutch disk of the present invention is applied is fixed to a motor 5100 having a variable position in a linear direction, a drive shaft 5110 rotated by driving of the motor 5100, and an outer surface of the drive shaft 5110. And a clutch disk 5300 and a clutch disk 5300 that are rotatable together with the driving shaft 5110 and movable in the longitudinal direction of the driving shaft 5110 according to the displacement of the driving shaft 5110, and provided on one surface of the clutch disk 5300. The plurality of first clutch balls 5310, the plurality of second clutch balls 5320 disposed on the other surface of the clutch disc 5300, and the driving shaft 5110 of the same distance from the center of rotation of the 5110. ) Is inserted into the center and is engaged with the first clutch ball (5310) and the first input gear (5400) rotated by the rotational force of the drive shaft (5110), and the drive shaft (5110) is inserted into the center and the second Rotating force of the drive shaft 5110 in engagement with the clutch ball 5320 The second input gear 5500 that is received and rotates, and the first compound gears 5610 and 5710 and the second compound gears meshed with the first input gear 5400 and the second input gear 5500 at both ends thereof. First and second compound rotary shaft portion (5600, 5700) and 5620, 5720, the rotational speed is variable according to the gear ratio with the first input gear 5400 or the second input gear (5500), and the first And second compound gears 5620 and 5720 of the second compound

rotary shaft units

5600 and 5700 are engaged at the inner side to rotate the driven shaft 5810 according to the rotation of the first and second compound

rotary shaft units

5600 and 5700. And a ring gear 5800 for rotating.

The motor 5100 rotates the drive shaft 5110 by generating a physical rotational force by receiving power from a battery, which is a power source of an electric vehicle, and transmitting it to the drive shaft 5110. In addition, the motor 5100 may be changed from side to side in the drawing by another driving means (not shown) such as a cylinder or a stepping motor, thereby driving the clutch disc 5300 connected to the driving shaft 5110. And varying the position in the longitudinal direction of 5110.

As the drive shaft 5110 rotates, the clutch disc 5300 also rotates at the same speed, and the clutch disk 5300 can reciprocate in the longitudinal direction of the drive shaft 5110 during the rotation.

A first input gear 5400 is positioned at a position adjacent to the left side of the clutch disc 5300, and a second input gear 5500 is positioned at a position adjacent to the right side of the clutch disc 5300. The drive shaft 5110 penetrates the center portion of the first input gear 5400 and the second input gear 5500, but the rotational force of the drive shaft 5110 is the first input gear 5400 and the second input gear 5500. ) So that they are not delivered directly to).

In this state, when the clutch disc 5300 is positioned between the first input gear 5400 and the second input gear 5500, the rotational force of the drive shaft 5110 may be neutral when the first input gear 5400 is in a neutral state. ) And the second input gear (5500) is not delivered to.

When the shift to the first speed is required, the clutch disk 5300 moves to the first input gear 5400, and the first clutch balls 5310 of the clutch disk 5300 are the first input gear 5400. When inserted into the groove 5410 provided in the, the rotational force of the clutch disk 5300 is transmitted to the first input gear 5400 to rotate.

When the first input gear 5400 that receives the rotational force of the clutch disk 5300 rotates, the first compound gears of the first and second compound

rotation shaft parts

5600 and 5700 engaged with the first input gear 5400 are rotated. The driving force is transmitted to the 5610 and 5710, and the rotation speed of the driving shaft 5110 is reduced by the reduction ratio between the first input gear 5400 and the

first compound gear

5610 and 5710.

A ring gear 5800 is engaged with an outer side of each of the second compound gears 5620 and 5720 of the first compound rotary shaft unit 5600 and the second compound rotary shaft unit 5700, and the first compound rotary shaft unit 5600 is engaged. ) And the second compound rotary shaft unit 5700 rotates the driven shaft 5810 provided at the outer center of the ring gear 5800 at a first speed.

When shifting to the second speed is necessary in this state, the position of the motor 5100 is changed to move the clutch disk 5300 toward the second input gear 5500, and the second input gear 5500 is provided. By inserting the second clutch ball 5320 into the groove 510, the rotational force of the clutch disc 5300 is transmitted to the second input gear 5500.

Therefore, the ring gear 5800 coupled to the outside of the second compound gears 5620 and 5720 and the driven shaft 5810 connected to the ring gear 5800 are rotated at a second speed.

By using the ring gear 5800 to have a two-stage deceleration structure, the driving force of the motor 5100 is increased at low speed, and the motor is driven at high speed while reducing the load of the motor 5100 at high speed. Speed variable width can be increased.

The driven shaft 5810 may serve to transfer power to a driving wheel of an electric vehicle, and may represent three states of neutral, low speed, and high speed.

Figure 17 is an exploded perspective view showing a clutch disk according to an embodiment of the present invention, Figure 18 is a perspective view showing the assembled state of the clutch disk according to the present invention, Figure 19 is a detailed cross-sectional view of the edge of the clutch disk of the present invention.

The clutch disk 5300 of the present invention includes a plurality of first clutch balls 5310 and second clutch balls 5320, the first clutch balls 5310 and a second clutch for transmitting power of the motor 5100. First mounting for fixing the clutch disk body 5340, the first clutch ball (5310) is formed on one side of the clutch disk body 5340, the ball insertion hole (5341, 5534) is inserted into the ball (5320) The plate 5330 and the second clutch ball 5320 may be formed of a second mounting plate 5350 for fixing the second clutch ball 5320 to the other side of the clutch disc body 5340.

The first clutch ball 5310 is configured to transmit the power of the motor 5100 by engaging the groove 5410 of the first input gear 5400 provided on the transmission side, and the second clutch ball 5320 is The power of the motor 5100 is transmitted by engaging the groove 5510 of the second input gear 5500 installed to face the first input gear 5400 on the transmission side.

The first mounting plate 5310 is formed in a disk shape having a predetermined thickness, and a driving shaft coupling hole 5343 is formed in the center portion to which the driving shaft 5110 on the transmission side is coupled, and the outer side of the driving shaft coupling hole 5431. A plurality of engaging holes 5331 are formed at a predetermined interval along the circumference of the circumferential edge, and a spring portion 5332 to elastically support the second clutch ball 5320 between the engaging holes 5331. Is formed.

The catching hole 5313 is formed to have a diameter smaller than that of the first clutch ball 5310. When the catching hole 5311 is fitted with one side portion of the first clutch ball 5310 to the catching hole 5311, the first clutch ball is disposed. The first clutch ball 5310 is urged toward the clutch disc body 5340 by fixing the 5310 in the catching hole 5331 to fix the first clutch ball 5310 to the clutch disc body 5340.

The spring part 5332 is configured to act as a disc spring by bending the body of the first mounting plate 5330 toward the clutch disc body 5340 at a predetermined angle.

The drive shaft coupling hole (5343) is a portion coupled to the drive shaft (5110) has a sawtooth-shaped spline (not shown) formed in the drive shaft (5110) is engaged with the clutch disk (100) integrally with the motor (5100) 5300 is adapted to rotate.

The second mounting plate 5350 is for fixing to the other side of the clutch disc body 5340 with the second clutch ball 5320 in between, and performs the same function as the first mounting plate 5330. The engaging hole 5331, the spring portion 5332, and the drive shaft coupling hole 5353 are formed so as to form the same.

In this case, when the first and second

clutch balls

5310 and 5320 and the first and

second fixing plates

5330 and 5350 and the clutch disc body 5340 are coupled to each other, one side of the first clutch ball 5310 is a first mounting plate. Inserted into the engaging hole (5331) of the 5330, the other side is to be elastically supported by the spring portion 5332 of the second mounting plate (5350), one side of the second clutch ball (5320) the second mounting plate ( It is inserted into the locking hole 5331 of the 5350 and the other side is elastically supported by the spring portion 5332 of the first mounting plate (5330).

In the clutch disc body 5340, a disc-shaped material having a predetermined thickness manufactured by a forging method, and a first ball insertion hole 5331 and a second ball insertion hole 5534 by a press method simultaneously. To form.

A plurality of first ball insertion holes 5331 are formed through the edges of the clutch disc body 5340. First clutch balls 5310 are inserted, and one side of the first mounting plate 5330 is used. The spring hole 5322 of the second mounting plate 5350 is positioned so that the first clutch ball 5310 is in contact with the locking hole 5331.

The second ball insertion hole (5342) is formed through the first ball insertion hole (5341) is inserted into the second clutch ball (5320), one side of the second mounting plate (5350) The spring hole 5332 of the first mounting plate 5330 is positioned so that the second clutch ball 5320 is in contact with the engaging hole 5331, while being positioned to face the locking hole 5331.

Accordingly, one side of the first clutch ball 5310 is supported by the spring portion 5322 of the second mounting plate 5350, and the other side of the first clutch ball 5310 is caught by the locking hole 5331 of the first mounting plate 5330. do. In addition, one side of the second clutch ball 5320 is supported by a spring portion 5332 of the first mounting plate 5330, and the other side is caught by the locking hole 5331 of the second mounting plate 5350. do. Due to this structure, the first clutch ball 5310 and the second clutch ball 5320 are elastically supported by the

spring portions

5332 and 5332, respectively, so that the groove 5410 of the first input gear 5400 of the transmission is provided. When the first clutch ball 5310 is inserted into the groove 5510 of the second input gear 5500 and the second clutch ball 5320 is inserted into the first clutch ball (5310) it is possible to transfer the power while reducing the impact generated. .

In addition, the first ball insertion hole (5341) and the second ball insertion hole (5342) is formed through at the same time by a press (Press) method. Manufacturing by this method has the advantage that the processing process is very simple.

One side of the first clutch ball 5310 is elastically supported by the spring portion 5322 of the second mounting plate (5350) and the other side of the first clutch ball (5310) is caught in the engaging hole (5331) of the first mounting plate (5330) It protrudes outward from one mounting plate 5330. The protrusion of the first clutch ball 5310 is inserted into the groove 5410 of the first input gear 5400 to transmit power.

Grooves 5344a and 5344b are formed at both side edges of the clutch disc body 5340 along the circumference, and the grooves 5344a and 5344b of the first mounting plate 5330 and the second mounting plate 5350 are formed.

Bending parts

5340 and 5354 are inserted to bend the edges into 'b' shapes.

As described above, when the

bent parts

5340 and 5354 are inserted into the grooves 5344a and 5344b, the

bent parts

5340 and 5354 are caulked to the edges 5452a and 5452b of the clutch disc body 5340. Caulking portions (5345a, 5345b) is formed by pressing the end of the). Accordingly, the first mounting plate 5330 and the second mounting plate 5350 are fixed to both side surfaces of the clutch disc body 5340, respectively.

In order to assemble the clutch disk of the present invention having the configuration described above, the first clutch ball 5310 and the second clutch ball 5320, the first mounting plate 5330 and the second mounting plate (5350), respectively. And a clutch disc body 5340. In this case, the clutch disc body 5340 may simplify the manufacturing process by allowing the first ball insertion hole 5331 and the second ball insertion hole 5332 to pass through at the same time by a press method.

Thereafter, one side of the first clutch ball 5310 is inserted into the first ball insertion hole 5331 of the clutch disc body 5340 so as to be elastically supported by the spring portion 5322 of the second mounting plate 5350. The side is inserted so that a part protrudes into the locking hole 5331 of the first mounting plate 5330. In addition, one side of the second clutch ball 5320 is inserted into the second ball insertion hole 5332 of the clutch disc body 5340 so as to be elastically supported by the spring portion 5332 of the first mounting plate 5350, and the other side of the second clutch ball 5320. A part of the second mounting plate 5350 is inserted into the locking hole 5331 so as to protrude.

In this case, the bent portions 5340 and 5540 of the first mounting plate 5330 and the second mounting plate 5350 are inserted into the grooves 5344a and 5344b and caulking the edges of the clutch disc body 5340. By caulking, the first mounting plate 5330 and the second mounting plate 5350 may be firmly coupled to the clutch disk body 5340.

As described above, the coupling process of the first mounting plate 5330 and the second mounting plate 5350 to the clutch disk body 5340 by caulking is compared to the structure of coupling by a fastening means such as a bolt. There is an advantage that can be simplified.

20 is an exploded perspective view showing a clutch disk according to another embodiment of the present invention, FIG. 21 is a plan view showing a state in which the clutch disk of FIG. 20 is assembled, and FIG. 22 is a detailed cross-sectional view of the edge of the clutch disk of FIG. 20.

The clutch disc 5300 'according to the present embodiment engages with the

grooves

5410 and 5510 of the drive gears 5400 and 5500 to transmit the power of the motor 5100 to the first clutch ball 5310' and the second clutch ball. 5320 'and the first ball insertion groove 5311' and the second ball insertion groove 5332 'for inserting the first clutch ball 5310' and the second clutch ball 5320 'are formed at both sides. First mounting rings 5330 'and second for fixing the first and second

clutch balls

5310' and 5320 'inserted into the clutch disc body 5340' and the ball insertion grooves 5331 'and 5534'. The basic configuration is the same as the embodiment shown in FIG. 18 in that a mounting ring 5350 'is provided.

In the present embodiment, the first and second mounting rings 5330 'and 5350' are formed in a ring shape, and the plate springs 5131 'are used to elastically support the first and second

clutch balls

5310' and 5320 '. 1862 ', and the ball insertion grooves 5311' and 5534 'are not penetrating the clutch disc body 5340', but are formed in a groove shape that is recessed to a predetermined depth. This is different from the example.

As shown in FIG. 21, the first ball insertion groove 5331 ′ and the second ball insertion groove 5332 ′ alternate with each other on a circumference having a predetermined radius from the central axis of the clutch disc body 5340 ′. It is located.

As illustrated in FIG. 22, 'b' shaped bent parts 5340 'and 5354 are formed at edges of the first and second mounting rings 5330' and 5350 ', and the bent parts 5340 are formed. When caulking the edges 5452a 'and 5452b' of the clutch disc body 5340 'with the' 5353 'inserted into the grooves 5344a' and 5344b ', the caulking portion 5345a' and 5345b 'is caulked. ) Cover the upper surface of the bent portion (5334 ', 5354') and the first and second mounting rings (5330 ', 5350') is fixed to the clutch disk body (5340 ').

Discrete springs 5331 'and 5362' are inserted into the ball insertion grooves 5331 'and 5320', and the first and second

clutch balls

5310 'and 5320' are respectively provided with the disc springs 5361 'and 5362'. The other side is pressed and fixed by the protruding ball contact parts 5335 'and 5355' of the first and second mounting rings 5330 'and 5350'. Accordingly, the first clutch balls 5310 ′ and 5320 ′ absorb shocks generated during the shifting process by the counter springs 5331 ′ and 5362 ′, and at the same time, the first and second mounting rings 5330 ′ and 5350 ′. Is pressed onto the clutch disc body 5340 'by being pressed by the ball contacts 5335' and 5355 '.

According to such a structure, when the first and second mounting rings 5330 'and 5350' and the clutch disk body 5340 'are coupled by a caulking process, the first and second mounting rings 5330' and 5350 'are coupled by a fastening means such as a bolt. In comparison, there is an advantage that the manufacturing process is simplified.

It will be apparent to those skilled in the art that the present invention is not limited to the above embodiments and may be variously modified and modified without departing from the technical spirit of the present invention. will be.

The present invention can be used in all means of driving, from fossil fuel vehicles or natural gas vehicles to electric vehicles powered by a battery powered motor.

CROSS-REFERENCE TO RELATED APPLICATION

This patent application is filed with a patent application No. 10-2011-0130361 filed in Korea on December 07, 2011, and a patent application No. 10-2012-0023024 filed in Korea on March 06, 2012, March 2012 For patent application No. 10-2012-0023025 filed with Korea on June 06, and patent application No. 10-2012-0047625 filed with Korea on May 04, 2012, Section 119 (a) (35 USC § If priority is claimed under 119 (a)), all of which is incorporated by reference in this patent application. In addition, if this patent application claims priority for the same reason for countries other than the United States, all its contents are incorporated into this patent application by reference.

Claims

A drive shaft that receives rotation torque from a power source and rotates the drive shaft;

A clutch disk connected to rotate together with the drive shaft and having a plurality of grooves formed on one surface thereof;

A plurality of power transmission bodies inserted into a plurality of grooves of the clutch disk so that a portion thereof protrudes on one surface of the clutch disk;

A power carrier mounter for mounting the power train to the clutch disc while limiting movement in the axial direction with respect to the rotational axis of the clutch disc; And

A first input gear selectively coupled to the power transmission body to receive power;

Transmission configured to include.
The method of claim 1,

And a plurality of grooves or the power train mounter of the clutch disc are configured to restrain the power train with respect to the rotation of the clutch disc in the radial direction.
The method of claim 2,

And a groove is formed at one end of the power transmission body, and the power transmission mounter is inserted into the groove of the power transmission body.
The method of claim 2,

Each of the plurality of grooves of the clutch disc includes a peripheral surface axially parallel and a bottom surface on which the power transmission body is seated.
The method of claim 3,

One end of the power carrier mount penetrates the bottom surface and is coupled to the power train.
The method of claim 5,

And the other end of the power carrier mounter is installed so as not to protrude onto the opposite side of the one surface of the clutch disc.
The method of claim 1,

And a plurality of grooves or the power train mounter of the clutch disc are configured to allow the power train to rotate with respect to the rotation of the clutch disc in the radial direction.
The method of claim 7, wherein

And each of the plurality of grooves of the clutch disc is provided with shock absorbing means for buffering the power transmission body in the axial direction.
The method of claim 7, wherein

The portion of each of the power trains is formed in a smaller circumference as it moves away from one surface of the clutch disk, the power train mounter is a portion of the large circumference while allowing the passage of the smaller portion of the portion of the power transmission body And a mounting plate having a plurality of through grooves for restricting movement in the axial direction.
The method of claim 9,

And said mounting plate is fixed to said clutch disk by removable fixing means.
The method of claim 10,

And the fixing means includes a plurality of screws inserted into the mounting plate and the clutch disc so as not to protrude onto the mounting plate.
The method of claim 9,

And an outer circumferential portion of the mounting plate is installed on the clutch disk by caulking.
The method of claim 9,

The circumferential surface of the through groove of the mounting plate is inclined.
The method of claim 9,

And a circumferential surface of the through hole of the mounting plate includes a plastic deformation part whose diameter is reduced to restrict movement in the axial direction with respect to the larger part of the portion of the power transmission body.
Providing a clutch disk having a plurality of grooves formed on at least one surface thereof;

Inserting a clutch ball into a plurality of grooves of the clutch disc;

Installing a mounting plate having a plurality of through grooves larger in diameter than the clutch ball in the clutch disc;

Reducing the diameter of the through groove by pressing the circumference of the through groove of the mounting plate in an axial direction while the clutch ball and the mounting plate are installed on the clutch disc;

Transmission manufacturing method comprising a.
A plurality of first clutch balls engaged with grooves of the first input gear to transmit power of the motor;

A plurality of second clutch balls which engage with grooves of the second input gear installed to face the first input gear and transmit power of the motor;

A first mounting plate having a locking hole formed at a predetermined interval along a circumference of a disc shape to prevent separation by being caught by one side of the first clutch ball;

The first ball insertion hole is formed so that the other side of the first clutch ball is inserted and penetrates the position corresponding to the locking hole of the first mounting plate, and the second ball insertion hole is penetrated between the first ball insertion holes. A hole is formed, the clutch disk body is fixed to the first mounting plate on one side;

And a second mounting plate fixed to the other side of the clutch disc body and having a plurality of engaging holes formed at a position corresponding to the second ball insertion hole.
The method of claim 16,

A spring portion bent in a plate shape toward the clutch disc body between the engaging holes of the first mounting plate so that the second clutch ball is elastically supported by the spring portion;

And a spring portion bent in a plate shape toward the clutch disc body between the engaging holes of the second mounting plate, so that the first clutch ball is elastically supported.
The method according to claim 16 or 17,

At the edges of the first mounting plate and the second mounting plate, a bent portion bent in a 'b' shape is formed, and grooves into which the bent portion is inserted are formed at both side edges of the clutch disc body. And a first mounting plate, a second mounting plate, and a clutch disc body are coupled to each other by forming a caulking portion formed at an edge to press the bent portion.
A plurality of first clutch balls engaged with the grooves of the first input gear to transfer the power of the motor and a plurality of second clutches engaged with the grooves of the second input gear installed to face the first input gear to transfer the power of the motor; Preparing the ball;

Preparing a first mounting plate having a locking hole at which one side of the first clutch ball is engaged at regular intervals along an edge thereof;

Preparing a second mounting plate at a predetermined interval along a circumference of a locking hole at which one side of the second clutch ball is locked;

A first ball insertion hole formed at a position corresponding to the engaging hole of the first mounting plate and inserted into the other side of the first clutch ball, and formed at a position corresponding to the engaging hole of the second mounting plate; Preparing a clutch disc body in which a second ball insertion hole formed between the first ball insertion holes is penetrated by press working so that the other side of the clutch ball is inserted;

The first mounting plate and the second mounting plate may be inserted into the first ball insertion hole and the second clutch ball is inserted into the second ball insertion hole, respectively. Binding to;

Transmission manufacturing method comprising a.
The method of claim 19,

The edges of the first mounting plate and the second mounting plate are formed with a bent portion bent in a 'b' shape, and grooves into which the bent portions are inserted are symmetrically formed at both side edges of the clutch disc body. And the first mounting plate, the second mounting plate and the clutch disk body are coupled to each other by caulking an edge of the clutch disk body formed by the coupling.
A plurality of first clutch balls engaged with grooves of the first input gear to transmit power of the motor;

A plurality of second clutch balls which engage with grooves of the second input gear installed to face the first input gear and transmit power of the motor;

A clutch disc body each having a first ball insertion groove and a second ball insertion groove formed on both sides of the first clutch ball and the second clutch ball at regular intervals alternately along an edge of the edge;

A ring-shaped first mounting ring fixedly coupled to one side of the clutch disc body to fix the first clutch ball between the clutch disc body;

It is fixed to the other side of the clutch disk body and comprises a ring-shaped second mounting ring for fixing the second clutch ball between the clutch disk body,

And a first mounting ring and a second mounting ring are fixedly coupled to both side surfaces of the clutch disk body by forming a caulking portion at an edge portion of the clutch disk body.
The method of claim 21,

And the first ball insertion groove and the second ball insertion groove are alternately located on a circumference having a predetermined radius from the central axis of the clutch disc body.
The method of claim 22,

The edges of the first mounting ring and the second mounting ring have a bent portion bent in a 'b' shape, and grooves into which the bent portion is inserted are formed at both side edges of the clutch disc body, and the caulking portion has the bent portion. And a first mounting ring, a second mounting ring, and a clutch disc body coupled to each other by being formed at a position where the end is pressed.
The transmission device according to any one of claims 1 to 14 and 16 to 17 and 21 to 23;

A wheel drive motor connected to a drive shaft of the transmission; And

A vehicle wheel connected to the transmission to receive rotational power;

In-wheel drive system for vehicles configured to include.