JP4007805B2 - Transfer device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a transfer device, and more particularly to a transfer device for a vehicle, and more particularly to a full-time transfer device.
[0002]
[Prior art]
The conventional triaxial transfer device has a structure in which the intermediate shaft rotates in the direction opposite to the rotation direction of the input shaft. 4 and 5 are skeleton diagrams for explaining the structure of such a conventional three-axis transfer device.
[0003]
Referring to FIG. 4, the three-axis transfer device according to the first conventional example is arranged in parallel with the input shaft 1, the first output shaft 2 arranged coaxially with the input shaft 1, and the input shaft 1. The second output shaft 3 and the intermediate shaft 4 disposed in parallel with the input shaft 1 are provided, and a differential mechanism 40 is disposed on the first output shaft 2.
[0004]
In the three-axis transfer device according to the first conventional example, the rotational drive direction of the first output shaft 2 and the second output shaft 3 is the same as the rotational direction of the input shaft. A differential mechanism 40 is provided to set the take-out position of the first output shaft 2 coaxially with the input shaft 1.
[0005]
Referring to FIG. 5, the three-axis transfer device according to the second conventional example includes an input shaft 1, a second output shaft 3 arranged in parallel to the input shaft 1, and the second output shaft 3. The first output shaft 2 disposed above and the intermediate shaft 4 disposed parallel to the input shaft 1 are provided. A differential mechanism 50 is disposed on the second output shaft 3.
[0006]
In the three-axis transfer device according to the second conventional example, the rotation output direction of the first output shaft 2 and the second output shaft 3 is the same as the rotation direction of the input shaft. A differential mechanism 50 is arranged on the same axis as 3 and a take-out position of the first output shaft 2 is set.
[0007]
[Problems to be solved by the invention]
However, in the first and second conventional examples, the output take-out position is input for the convenience of making the rotational drive directions of the first output shaft and the second output shaft the same as the rotation direction of the input shaft. This can be set only on the shaft or on the second output shaft, and this causes a problem that the arrangement of components disposed downstream of the transfer device, such as the propeller shaft and other peripheral components, is restricted.
[0008]
A problem to be solved by the present invention is to provide a transfer device having a novel structure capable of making the rotational drive directions of the first output shaft and the second output shaft the same as the rotational direction of the input shaft. Furthermore, it is to provide a transfer device that can alleviate the above-mentioned restrictions.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides, in a first viewpoint, an input shaft to which power is input, a first gear fixed on the input shaft, and an intermediate disposed in parallel with the input shaft. A shaft, a second gear fixed on the intermediate shaft and meshed with the first gear, a power disposed on the intermediate shaft and transmitted from the intermediate shaft to a rotational direction of the intermediate shaft A differential mechanism that distributes and outputs a first rotational driving force acting in the same direction and a second rotational driving force acting in a direction opposite to the rotational direction of the intermediate shaft; and coaxially with the intermediate shaft A first output shaft that is disposed and to which the second output is transmitted from the differential mechanism; a second output shaft that is disposed in parallel with the intermediate shaft; and is fixed on the second output shaft, The first rotational driving force is transmitted from the differential mechanism. And third gear, the possess, the differential mechanism is a bevel type differential mechanism, the bevel type differential mechanism, a first side gear fixed on the intermediate shaft, is meshed with the first side gear A pinion that revolves in the same direction as the rotation direction of the first side gear and rotates in a direction orthogonal to the rotation direction of the first side gear; and is fixed on the first output shaft and meshed with the pinion And a ring gear meshed with the third gear and driven to rotate together with the revolution of the pinion .
[0010]
In the transfer device according to the present invention, the first output shaft is transmitted by the second rotational driving force transmitted from the differential mechanism, while the second output shaft is transmitted by the differential mechanism. Both are rotationally driven in the same direction as the input shaft (the direction opposite to the intermediate shaft) by the rotational driving force. That is, according to the transfer device of the present invention, a part of the power input to the intermediate shaft is converted into a rotational driving force that acts in the same direction as the rotation direction of the input shaft by the differential mechanism arranged on the intermediate shaft. Is done. For this reason, the output can be taken out from the intermediate shaft, and in addition, the above-mentioned restrictions are eased.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described.
[0012]
The transfer device according to a preferred embodiment of the present invention is arranged parallel to the input shaft (1 in FIG. 1 or FIG. 2) to which power is input and rotated in the opposite direction to the input shaft. An intermediate shaft (4 in FIG. 1 or FIG. 2), and a first rotational driving force that is arranged on the intermediate shaft and acts on the power input from the intermediate shaft in the same direction as the rotational direction of the intermediate shaft; A differential mechanism that distributes the second rotational driving force acting in the direction opposite to the rotational direction of the intermediate shaft and outputs the second rotational shaft parallel to each other toward the second output shaft and the first output shaft ( 1 and the bevel differential mechanism 7) of FIG. According to this apparatus, the input shaft, the first output shaft, and the second output shaft are not arranged on the same straight line, and the output output position is other than the second output shaft.
[0013]
In a preferred embodiment of the present invention, the transfer device according to the present invention is mounted on a four-wheel drive vehicle and used as a full-time transfer device.
[0014]
【Example】
In order to further clarify the preferred embodiment of the present invention described above, an embodiment of the present invention will be described below with reference to the drawings.
[0015]
[Example 1]
1A and 1B are diagrams for explaining the configuration of the transfer device according to the first embodiment of the present invention. FIG. 1A is an axial end view, and FIG. ) Is a cross-sectional view taken along line AA in FIG.
[0016]
Referring to FIGS. 1A and 1B, a transfer apparatus according to a first embodiment of the present invention includes an input shaft 1 to which power is input, and a first gear 5 fixed on the input shaft 1. An intermediate shaft 4 disposed in parallel with the input shaft 1, a second gear 6 fixed on the intermediate shaft 4 and meshed with the first gear 5, and disposed on the intermediate shaft 4. Is distributed to a first rotational driving force acting in the same direction as the rotation direction of the intermediate shaft 4 and a second rotational driving force acting in the direction opposite to the rotation direction of the intermediate shaft 4. The first output shaft 2 that is arranged coaxially with the intermediate shaft 4 and is transmitted with the second rotational driving force from the bevel differential mechanism 7 is parallel to the intermediate shaft 4. A second output shaft 3 arranged on the second output shaft 3 and fixed on the second output shaft 3. And a third gear 8 in which the first rotational driving force from Le mechanism 7 is rotated is transmitted in a direction opposite to the rotation direction of the intermediate shaft 4, the.
[0017]
The bevel type differential mechanism 7 is meshed with a first side gear 7a fixed on the intermediate shaft 4 and the first side gear 7a, revolves in the same direction as the rotation direction of the first side gear 7a, and the first side gear. Pinions that rotate in a direction orthogonal to the rotational direction of 7a, that is, the first pinion 7b and the second pinion 7c, and the first pinion 7b and the second pinion 7c fixed on the first output shaft 2 And a ring gear 7e that is meshed with the third gear 8 and that is rotationally driven along with the revolution of the first pinion 7b and the second pinion 7c.
[0018]
Next, the operation of the transfer apparatus according to the first embodiment of the present invention described above will be described in the case where power for rotating the input shaft 1 in the right direction is input to the input shaft 1.
[0019]
1 (A) and 1 (B), when the power for rotating the input shaft 1 to the right is input to the input shaft 1, the first gear 5 rotates to the right, The gear 6 and the intermediate shaft 4 rotate counterclockwise. Then, the first output shaft 2 is rotationally driven rightward by the second rotational driving force transmitted through the bevel differential mechanism 7. On the other hand, the third gear 8 and the second output shaft 3 are rotated clockwise by the first rotational driving force transmitted via the ring gear 7e that rotates counterclockwise. In this way, the first output shaft 2 and the second output shaft 3 are rotationally driven in the same direction as the input shaft 1.
[0020]
In the transfer device according to the first embodiment of the present invention, it is not necessary to arrange the input shaft 1, the first output shaft 2, and the second output shaft 3 on the same straight line. The degree of freedom in design regarding the arrangement of the first output shaft 2 and the second output shaft 3 is increased.
[0021]
Next, setting of the number of teeth of the first gear 5, the second gear 6, the ring gear 7e, and the third gear 8 will be described. Here, the rotational speed of the input shaft 1 is N1, the rotational speed of the first output shaft 2 is N2, the rotational speed of the second output shaft 3 is N3, the rotational speed of the second gear 6 is N4, and the ring gear 7e The number of rotations is N5, the number of teeth of the first gear 5 is Z1, the number of teeth of the second gear 6 is Z2, the number of teeth of the ring gear 7e is Z3, the number of teeth of the third gear 8 is Z4, and the input gear The ratio A = Z1 / Z2 and the output gear ratio B = Z3 / Z4, and the rotation direction is positive when viewed from the input side.
[0022]
From the function of the bevel differential mechanism 7, the relationship between N2, N4 and N5 can be expressed as follows.
[0023]
(N4 + N2) / 2 = N5
[0024]
Therefore,
(−N1 × A + N2) / 2 = −N3 / B (a)
.
[0025]
<Tooth number setting example 1-1>
For example, when the reduction ratio of the transfer device is “1”, it is necessary that N1 = N2 = N3. Therefore, it is better to set Z1 to Z4 so that the following relationship is established from the equation (a).
[0026]
B = 2 / (A-1) (b)
[0027]
<Tooth number setting example 1-2>
For example, when the reduction ratio of the transfer device is “1” and the torque distribution ratio between the first output shaft 2 and the second output shaft 3 is 50:50, the relationship of the following equation must always be satisfied.
[0028]
N1 = (N2 + N3) / 2 (c)
[0029]
Here, from the equations (a), (b), and (c),
(2 / B-1) * N2 = (2 / B-1) * N3 (d)
.
[0030]
Furthermore, the following relationship is necessary to always establish the formula (d) regardless of the values of N2 and N3.
[0031]
2 / B-1 = 0, that is,
B = 2 (e)
[0032]
Also, from equation (b)
A = 2 (f)
.
[0033]
Therefore, Z1 to Z4 may be set so that the formulas (e) and (f) are established.
[0034]
[ Reference Example 1 ]
FIG. 2 is a diagram for explaining the configuration of the transfer apparatus according to Reference Example 1 of the present invention.
[0035]
Referring to FIG. 2, the transfer device according to Reference Example 1 of the present invention is arranged in parallel with an input shaft 1 to which power is input, a first gear 5 fixed on the input shaft 1, and the input shaft 1. The intermediate shaft 4, the second gear 6 fixed on the intermediate shaft 4 and meshed with the first gear 5, and the power input from the intermediate shaft 4 to the intermediate shaft 4 A planetary gear type differential mechanism 10 that distributes and outputs a first rotational driving force that acts in the same direction as the rotational direction of 4 and a second rotational driving force that acts in the direction opposite to the rotational direction of the intermediate shaft 4. A first output shaft 2 disposed coaxially with the intermediate shaft 4 and transmitting a second rotational driving force from the planetary gear type differential mechanism 10, and a second output disposed in parallel with the intermediate shaft 4. A planetary gear type differential mechanism 1 fixed on the shaft 3 and the second output shaft 3 From a third gear 8 in which the first rotational driving force is rotated is transmitted in a direction opposite to the rotation direction of the intermediate shaft 4, the.
[0036]
The planetary gear type differential mechanism 10 is a double pinion type planetary gear mechanism, which is fixed to the intermediate shaft 4 and rotates integrally with the intermediate shaft 4, a pinion 12 pivotally supported by the carrier 13, a pinion 12, and A ring gear 11 meshed with the third gear 8 and a sun gear 14 fixed on the first output shaft 2 and meshed with the pinion 12 and rotating integrally with the first output shaft 2 are provided.
[0037]
Next, the operation of the transfer apparatus according to Reference Example 1 of the present invention described above will be described in the case where power for rotating the input shaft in the right direction is input to the input shaft.
[0038]
Next, referring to FIG. 2, when power for rotating the input shaft 1 to the right is input to the input shaft 1, the first gear 5 rotates to the right, and the second gear 6 and the intermediate shaft 4 rotate to the left. To do. The first output shaft 2 is rotationally driven rightward by the second rotational driving force transmitted through the planetary gear type differential mechanism 10. The third gear 8 and the second output shaft 3 are rotated to the right by the first rotational driving force transmitted through the ring gear 11 that rotates counterclockwise. In this way, the first output shaft 2 and the second output shaft 3 are rotationally driven in the same direction as the input shaft 1.
[0039]
In the transfer device according to the first embodiment of the present invention, it is not necessary to arrange the input shaft 1, the first output shaft 2, and the second output shaft 3 on the same straight line. The degree of freedom in design regarding the arrangement of the first output shaft 2 and the second output shaft 3 is increased.
[0040]
Next, setting of the number of teeth of the first gear 5, the second gear 6, the ring gear 11, and the third gear 8 will be described. Here, the rotational speed of the input shaft 1 is N1, the rotational speed of the first output shaft 2 is N2, the rotational speed of the second output shaft 3 is N3, the rotational speed of the second gear 6 is N4, and the ring gear 11 The number of rotations is N5, the number of teeth of the first gear 5 is Z1, the number of teeth of the second gear 6 is Z2, the number of external teeth of the ring gear 11 is Z3, the number of internal teeth of the ring gear 11 is ZR, and the number of teeth of the sun gear 14 The number of teeth is ZS, the number of teeth of the third gear 8 is Z4, the input gear ratio A = Z1 / Z2, the output gear ratio B = Z3 / Z4, the planetary gear ratio C = ZS / ZR, and the rotational direction is viewed from the input side. A clockwise rotation is positive.
[0041]
From the function of the planetary gear type differential mechanism 10 which is a double pinion type, the relationship between N2, N4 and N5 can be expressed as follows.
[0042]
(1-C) × N4 = N5-C × N2
[0043]
Therefore,
(1-C) * A * N1 = 1 / B * N3 + C * N2 (g)
.
[0044]
<Tooth number setting example 2-1>
For example, when the reduction ratio of the transfer device is “1”, it is necessary that N1 = N2 = N3. Therefore, Z1 to Z4, ZR, and ZS may be set so that the following relationship is established from the equation (g).
[0045]
(1-C) × A = C + 1 / B (h)
[0046]
<Example of tooth count setting 2-2>
In addition, when the reduction ratio of the transfer device is “1” and the torque distribution ratio between the first output shaft 2 and the second output shaft 3 is 50:50, the following relationship must always be established.
[0047]
N1 = (N2 + N3) / 2 (i)
[0048]
Here, from the equations (g), (h) and (i),
A = 2 × C / (1-C) (j)
B = 1 / C (k)
.
[0049]
Therefore, Z1 to Z4, ZS, and ZR may be set so that the expressions (j) and (k) are established.
[0050]
[ Reference Example 2 ]
FIG. 3 is a diagram for explaining the configuration of a transfer device according to Reference Example 2 of the present invention.
[0051]
Referring to FIG. 3, the transfer device according to Reference Example 2 of the present invention is arranged in parallel with the input shaft 1 to which power is input, the first gear 5 fixed on the input shaft 1, and the input shaft 1. The intermediate shaft 4, the second gear 6 fixed on the intermediate shaft 4 and meshed with the first gear 5, and the power input from the intermediate shaft 4 to the intermediate shaft 4 A planetary gear type differential mechanism 20 that distributes and outputs a first rotational driving force that acts in the same direction as the rotational direction of 4 and a second rotational driving force that acts in the direction opposite to the rotational direction of the intermediate shaft 4. A first output shaft 2 that is arranged coaxially with the intermediate shaft 4 and to which a second rotational driving force is transmitted from the planetary gear type differential mechanism 20, and a second output that is arranged in parallel with the intermediate shaft 4. A planetary gear type differential mechanism 2 fixed on the shaft 3 and the second output shaft 3 From a third gear 8 in which the first rotational driving force is rotated is transmitted in a direction opposite to the rotation direction of the intermediate shaft 4, the.
[0052]
The planetary gear type differential mechanism 20 is a double pinion type planetary gear mechanism, which is fixed on the intermediate shaft 4 and rotates integrally with the intermediate shaft 4, a pinion 22 meshed with the sun gear 24, a first gear A carrier 23 that is fixed on the output shaft 2 and rotates integrally with the first output shaft 2 and supports the pinion 22, and a ring gear 21 meshed with the pinion 22 and the third gear 8 are provided.
[0053]
Next, the operation of the transfer apparatus according to Reference Example 2 of the present invention described above will be described in the case where power for rotating the input shaft in the right direction is input to the input shaft.
[0054]
Next, referring to FIG. 3, when power for rotating the input shaft 1 in the right direction is input to the input shaft 1, the first gear 5 rotates to the right, and the second gear 6 and the intermediate shaft 4 rotate to the left. To do. The first output shaft 2 is rotationally driven rightward by the second rotational driving force transmitted through the planetary gear type differential mechanism 20. The third gear 8 and the second output shaft 3 are rotated to the right by the first rotational driving force transmitted through the ring gear 21 that rotates counterclockwise. In this way, the first output shaft 2 and the second output shaft 3 are rotationally driven in the same direction as the input shaft 1.
[0055]
In the transfer device according to the first embodiment of the present invention, it is not necessary to arrange the input shaft 1, the first output shaft 2, and the second output shaft 3 on the same straight line. The degree of freedom in design regarding the arrangement of the first output shaft 2 and the second output shaft 3 is increased.
[0056]
Next, setting of the number of teeth of the first gear 5, the second gear 6, the ring gear 21, and the third gear 8 will be described. Here, the rotational speed of the input shaft 1 is N1, the rotational speed of the first output shaft 2 is N2, the rotational speed of the second output shaft 3 is N3, the rotational speed of the second gear 6 is N4, and the ring gear 21 The number of rotations is N5, the number of teeth of the first gear 5 is Z1, the number of teeth of the second gear 6 is Z2, the number of external teeth of the ring gear 21 is Z3, the number of internal teeth of the ring gear 21 is ZR, and the number of teeth of the sun gear 24 The number of teeth is ZS, the number of teeth of the third gear 8 is Z4, the input gear ratio A = Z1 / Z2, the output gear ratio B = Z3 / Z4, the planetary gear ratio C = ZS / ZR, and the rotational direction is viewed from the input side. A clockwise rotation is positive.
[0057]
From the function of the planetary gear type differential mechanism 20 which is a double pinion type, the relationship between N2, N4 and N5 can be expressed as follows.
[0058]
(1-C) × N2 = N5-C × N4
[0059]
Therefore,
(1-C) × N2 = A × C × N1-1 / B × N3 (1)
.
[0060]
<Tooth number setting example 3-1>
For example, when the reduction ratio of the transfer device is “1”, it is necessary that N1 = N2 = N3. Therefore, Z1 to Z4, ZR, and ZS may be set so that the following relationship is established from the equation (l).
[0061]
1-C = A × C−1 / B (m)
[0062]
<Number of teeth setting example 3-2>
In addition, when the reduction ratio of the transfer device is “1” and the torque distribution ratio between the first output shaft 2 and the second output shaft 3 is 50:50, the following relationship must always be established.
[0063]
N1 = (N2 + N3) / 2 (n)
[0064]
Here, from the equations (l), (m) and (n),
A = (2-2 × C) / C (o)
B = 1 / (1-C) (p)
.
[0065]
Accordingly, Z1 to Z4, ZR, and ZS may be set so that the expressions (o) and (p) are established.
[0066]
【The invention's effect】
According to the present invention, there is provided a transfer device having a novel structure in which the rotational drive direction of a plurality of output shafts can be the same as the rotation direction of the input shaft, and is further disposed at a subsequent stage of the transfer device. This increases the degree of freedom in the arrangement of parts.
[Brief description of the drawings]
FIGS. 1A and 1B are diagrams for explaining the configuration of a transfer device according to a first embodiment of the invention, in which FIG. 1A is an axial end view, and FIG. It is AA line step sectional drawing of (A).
FIG. 2 is a diagram for explaining a configuration of a transfer apparatus according to Reference Example 1 of the present invention.
FIG. 3 is a diagram for explaining a configuration of a transfer apparatus according to Reference Example 2 of the present invention.
FIG. 4 is a skeleton diagram for explaining the structure of a three-axis transfer device according to a first conventional example.
FIG. 5 is a skeleton diagram for explaining the structure of a three-axis transfer device according to a second conventional example.
[Explanation of symbols]
Reference Signs List 1 input shaft 2 first output shaft 3 second output shaft 4 intermediate shaft 5 first gear 6 second gear 7 bevel differential mechanism 7a first side gear 7b first pinion 7c second pinion 7d second 2 side gears 7e ring gear 8 third gear 10 planetary gear type differential mechanism 11 ring gear 12 pinion 13 carrier 14 sun gear 20 planetary gear type differential mechanism 21 ring gear 22 pinion 23 carrier 24 sun gear

Claims (1)

An input shaft to which power is input,
A first gear fixed on the input shaft;
An intermediate shaft arranged parallel to the input shaft;
A second gear fixed on the intermediate shaft and meshed with the first gear;
The power that is disposed on the intermediate shaft and that is transmitted from the intermediate shaft acts in the direction opposite to the rotation direction of the intermediate shaft and the first rotational driving force that acts in the same direction as the rotation direction of the intermediate shaft. A differential mechanism for distributing and outputting to the second rotational driving force;
A first output shaft disposed coaxially with the intermediate shaft and to which the second rotational driving force is transmitted from the differential mechanism;
A second output shaft disposed parallel to the intermediate shaft;
A third gear fixed on the second output shaft and to which the first rotational driving force is transmitted from the differential mechanism;
Have
The differential mechanism is a bevel differential mechanism, and the bevel differential mechanism is
A first side gear fixed on the intermediate shaft;
A pinion that meshes with the first side gear, revolves in the same direction as the rotation direction of the first side gear, and rotates in a direction orthogonal to the rotation direction of the first side gear;
A second side gear fixed on the first output shaft and meshed with the pinion;
A ring gear meshed with the third gear and driven to rotate together with the revolution of the pinion;
It features and to belt attempt to transfer device to become equipped with.

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