CN116255431A

CN116255431A - Output drive system for vehicle

Info

Publication number: CN116255431A
Application number: CN202111507389.5A
Authority: CN
Inventors: 曾盛财
Original assignee: Direct Drive Technology Co ltd
Current assignee: Direct Drive Technology Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2023-06-13

Abstract

The invention provides a force transmission system for a vehicle, which provides the functions of simple assembly, power transmission and the like. The output transmission system comprises a combination of a output shaft and a spring device; and the output shaft is provided with an output gear set and can output power freely in a rotating way. The spring device is provided with a plurality of spring coils and is wound on the output shaft; the spring device is defined with a first end and a second end, the first end is connected with the output shaft, the second end combines the patterns of the output gear set, so that when the power of the rotating shaft is transmitted to the output gear set through the input gear set, the spring device is matched for accumulating energy, and the torque output effect of the vehicle (or the output shaft) is improved; improving the conditions of complicated structure, troublesome assembly, time consumption, large mechanism length/volume and high cost of the known structure.

Description

Output drive system for vehicle

Technical Field

The present invention relates to an output drive system for a vehicle; in particular to a technique for improving the torque output effect of a combined spring device of a vehicle output shaft or an output gear set.

Background

Transmissions for vehicles or electric vehicles, such as transmissions, gear sets for transmitting power, differentials, etc., for driving the vehicle forward, backward, etc., are well known in the art. For example, taiwan 87217364 ("car transmission") and patent publication (US 6146306, "AUTOMOBILE TRANSMISSION DEVICE") provide a typical example.

Known vehicular variable speed drive systems include manual, automatic, and continuously variable speed drive systems; the power of the engine rotating shaft or the motor rotating shaft is transmitted to a power output shaft through a speed change control mechanism, a power input gear set assembled on the power input shaft, a (bevel gear) differential mechanism arranged on the power output shaft, a power output gear set and other devices, so that the vehicle can obtain motions with different speed change ratios.

Basically, the speed change control mechanism comprises a plurality of spring-like bodies and a control push cylinder which are respectively assembled in and out of the input gear set; a worm wheel disc is braked to rotate by a manual or automatic speed change control motor, different balls (or push rods) are selectively driven to push the control push cylinder, so that the spring body and the input gear set form an engaged or disengaged state, the input gear set with different teeth numbers respectively drive the output gear set and the differential mechanism, and the output shaft generates different rotating speeds to drive the vehicle.

One problem associated with the structural design, operation, and application of a vehicle transmission is that it is known that the combination of the output shaft mechanism and the output gear set of the prior art must employ a plurality of elements such as buckles, bearings (e.g., balls, needles, one-way, thrust bearings, etc.) to maintain the stability of the output power that they are free to rotate.

For example, in the prior art, the output shaft mechanism is usually required to be configured to a combination of at least 16 unidirectional bearings, so that the conventional output transmission device is limited by the form of an inherent transmission mechanism for a long time, and has the problems of complex structure, troublesome assembly, time consumption, large mechanism length/volume and high cost; this is not desirable.

Typically, these reference data show the design of known (force) actuators in terms of construction and application in terms of vehicle systems. If the matching situation of the force transmission device is considered in the heavy design, the mechanism design accords with the condition of simplified structure assembly, and the structure is different from that of a conventional user, so that the power transmission type of the force transmission device can be changed, and the force transmission device is different from the prior art, and the situations of complicated structure, troublesome assembly, time consumption, large mechanism length/volume, high cost and the like are relatively improved; or further achieve the effect of improving the torque output of the transmission device; these problems are not taught or specifically disclosed in the above references.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, it is a primary object of the present invention to provide a force transmission system for a vehicle, which provides a simple assembly and power transmission. The output transmission system comprises a combination of a output shaft and a spring device; and the output shaft is provided with an output gear set and can output power freely in a rotating way. The spring device is formed with a structure of a plurality of (continuous) spring coils and is wound on the force output shaft; the spring device is defined with a first end and a second end, the first end is connected with the output shaft, the second end combines the patterns of the output gear set, so that when the power of the rotating shaft is transmitted to the output gear set through the input gear set, the spring device is matched for accumulating energy, and the torque output effect of the vehicle (or the output shaft) is improved; improving the conditions of complicated structure, troublesome assembly, time consumption, large mechanism length/volume and high cost of the known structure.

According to the force transmission system for the vehicle of the present invention, the coil structures of the spring device are configured in such a manner that the overlapping areas of adjacent coil structures form a decreasing pattern in a direction from the first end toward the second end; and each adjacent coil structure is connected at least in a localized area. Therefore, when the output gear set drives the spring device and the output shaft to rotate, the spring device gradually (tightly) accumulates energy on the output shaft from the second end towards the first end, and the torque output effect is relatively increased for the output shaft.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention; the relation positions and the structure coordination conditions of the input gear set, the speed change control part, the output gear set and the spring device are displayed;

FIG. 2 is a partial schematic view of FIG. 1; depicting the structural combination of the force-exerting gear set and the spring means;

FIG. 3 is another partial schematic view of the structure of FIG. 1; the structural combination of the force-exerting gear set and the spring means is shown.

Reference numerals illustrate:

10. force input gear set

11. First force-entering gear

12. Second force-entering gear

13. Third force-entering gear

20. Speed change control unit

40. Bearing

45. Unidirectional bearing

50. Spring device

51. First end

52. Second end

55. Spring coil structure

59. Fixing piece

60. Output gear set

61. First output gear

62. Second output gear

63. Third output gear

70. Differential mechanism

80. Rotating shaft

90. Output shaft

95. Wing part

99. Fixing device

W wheel 10

Detailed Description

Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.

Referring to fig. 1, 2 and 3, the present invention is directed to a force transmission system for a vehicle, comprising a combination of a rotating shaft 80 (or input shaft) and a force shaft 90, which is connected to a power source; the power source (not shown) may be a motor, internal combustion engine or engine type to cause the rotatable shaft 80 to generate rotational power in a counter-clockwise or clockwise direction.

The rotary shaft 80 is shown provided with a power input gearset 10 and a shift control portion 20. This input gearset 10 selects a three speed (or four file) transmission; thus, the input gearset 10 includes at least the first through third input gears 11 through 13. The input gearset 10 and the transmission control section 20 are known in the art and are not described in detail.

With respect to the input gearset 10, the output shaft 90 is provided with an output gearset 60, a spring device 50 (and/or a differential mechanism 70), and together form an output transmission system for outputting power. When the rotation power of the rotation shaft 80 drives the output gear set 60 to rotate through the input gear set 10, the output gear set 60 drives the output shaft 90 (and the differential mechanism 70) to rotate, so that the output shaft 90 generates rotation of the driving wheels W with different rotation speeds.

Figures 1, 2 and 3 also depict that the output gearset 60 is also a three-speed (or four-speed) drive system, having a plurality of output gears of different diameters, including first through third rotatable output gears 61-63, respectively engaged with the first through third input gears 11-13. A unidirectional bearing 45 is arranged between the first and second output gears 61, 62 (and/or the second and third output gears 62, 63); each of the output gears 61-63 is allowed to drive only the lower gear to drive the higher gear, but the higher gear cannot drive the lower gear.

In a possible embodiment, the first output gear 61 of the output gearset 60 is fitted with a bearing 40 (e.g., needle bearing or the like), and a combined output shaft 90 is provided. The output shaft 90 is provided with a wing 95, which is pivotally connected to the third output gear 63 in cooperation with the fastener 99. And, a one-way bearing 45 is disposed between the second output gear 62 and the wing 95, so that the second output gear 62 can drive the third output gear 63, but the third output gear 63 cannot drive the second output gear 62.

The area between the second output gear 62 and the output shaft 90 is shown fitted with a spring means 50. The spring device 50 may alternatively be a leaf spring-like structure formed with a plurality of (continuous) coil structures 55 wound about the output shaft 90.

In the embodiment taken, the spring means 50 defines a first end 51, a second end 52, the first end 51 engaging the bearing 40 (or one-way bearing) and the securing member 59, interfacing (or combining) the output shaft 90; the securing member 59 may be selected from a key, pin, or the like. And, the second end 52 is matched with the fixing piece 59 to combine (or fix) the form of the output gear set 60 (or the second output gear 62), so that when the power of the rotating shaft 80 is transmitted to the output gear set 60 through the input gear set 10, the energy is accumulated by matching with the spring device 50, and the torque output effect of the vehicle (or the output shaft) is improved.

Specifically, the coil structures 55 of the spring device 50 are arranged in a manner such that overlapping regions of adjacent coil structures 55 are formed in a decreasing manner from the first end 51 toward the second end 52, and each adjacent coil structure 55 is connected in at least a partial region such that energy accumulated in the coil structure 55 at the second end 52 is formed in an increasing manner toward the coil structure 55 at the first end 51. Thus, as the spring device 50 rotates in response to rotation of the force gear set 60, the greater the energy (or force) stored by the coil structure 55 closer to the first end 51, the less the energy (or force) stored by the coil structure 55 closer to the second end 52.

That is, when the force-outputting gear set 60 drives the spring device 50 and the force-outputting shaft 90 to rotate, the spring device 50 gradually (tightly) accumulates energy on the force-outputting shaft 90 from the second end 52 toward the first end 51, and the torque-outputting effect is relatively (gradually) increased to the force-outputting shaft 90.

For example, it is assumed that the first gear (or first speed) is defined as the first gear (or first speed) when the rotation shaft 80 drives the first input gear 11 to rotate the first output gear 61; and, in cooperation with the one-way bearing 45, the second output gear 62 is also synchronously rotated with the first output gear 61. In addition, the rotation of the second output gear 62 drives the spring device 50 to rotate, so as to gradually press the output shaft 90 from the second end 52 toward the first end 51 to store energy, thereby driving the output shaft 90 to rotate.

Assuming that the rotation shaft 80 drives the second input gear 12 to drive the second output gear 62 to rotate, the second gear (or second speed) is defined; the second output gear 62 directly drives the spring device 50 to rotate by matching with the unidirectional bearing 45, and gradually compresses the output shaft 90 from the second end 52 towards the first end 51 to store energy, thereby driving the output shaft 90 to rotate.

It can be appreciated that, assuming that the rotation shaft 80 drives the third input gear 13 to rotate the third output gear 63, a third gear (or third speed) is defined; the third gear (or third speed) is in high gear, causing the third input gear 13 to directly drive the third output gear 63 and the output shaft 90 to rotate without causing the spring device 50 to accumulate energy.

Typically, this force transmission system for a vehicle includes the following advantages and considerations over the prior art:

the combined structure of the output gearset 60, the spring device 50, and the output shaft 90 of the output drive system has been heavily designed. For example, between the output gearset 60 and the output shaft 90, a spring device 50 is provided; the spring device 50 is formed into a plurality of coil structures 50, and the spring device 50 is directed from the first end 51 to the second end 52, so that the overlapping areas of adjacent coil structures 55 form a gradually decreasing shape and the like, which are obviously different from the structure types in the prior art, and relatively improve the conditions of complicated structure, troublesome assembly, time consumption, larger mechanism length/volume, higher cost and the like in the prior art.

In particular, the first end 51 of the spring means 50 is secured to the output shaft 90 and the second end 52 is secured to the structural form of the output gearset 60, so that the mechanical design thereof achieves the effect of improving the torque output of the transmission system, improving the single power output function of the prior art.

Accordingly, the present invention provides an effective force transmission system for a vehicle having a space pattern different from that of the known art and having advantages not comparable to those of the prior art, which represents a significant advance and is in full compliance with the requirements of the present invention.

It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A force transmission system for a vehicle, comprising:

a combination of a force output shaft (90) and a spring device (50);

the output shaft (90) is provided with a output gear set (60) and can freely rotate to output power; and

the spring device (50) is provided with a spring coil structure (55) which is wound on the force output shaft (90); the spring device (50) is defined with a first end (51) and a second end (52), the first end (50) is connected with the output shaft (90), the second end (52) combines the patterns of the output gear set (60), so that when power is transmitted to the output gear set (60), the spring device (50) is matched to store energy, and the torque output effect of the output shaft (90) is improved.

2. The force transmission system for a vehicle of claim 1, wherein: the output gear set (60) is meshed with a force input gear set (10); the force input gear set (10) at least comprises a first force input gear (11), a second force input gear (12) and a third force input gear (13);

the output gear set (60) is provided with a plurality of output gears with different diameters, at least comprises a first output gear (61), a second output gear (62) and a third output gear (63), and is respectively meshed with the first input gear (11), the second input gear (12) and the third input gear (13); and

the input gear set (10) is arranged on a power-driven rotating shaft (80), the rotating shaft (80) is provided with a speed change control part (20), and the output shaft (90) is provided with a differential mechanism (70).

3. The force transmission system for a vehicle of claim 2, wherein: a one-way bearing (45) is arranged between the first output gear (61) and the second output gear (62);

the output shaft (90) is provided with a wing part (95) which is pivoted with a third output gear (63) by matching with a fixer (99); a one-way bearing (45) is arranged between the second force-output gear (62) and the wing part (95).

4. The force transmission system for a vehicle of claim 1, wherein: the spring means (50) selecting a leaf spring configuration to form a plurality of continuous coil configurations (55);

the first end (51) of the spring device (50) is matched with the bearing (40) and the fixing piece (59) and is connected with the output shaft (90); the fixing member (59) selects one of the keys and pins;

the second end (52) cooperates with a fixture (59) to combine the patterns of a second output gear (62) of the output gear set (60).

5. A force transmission system for a vehicle as claimed in claim 2 or 3, wherein: the spring means (50) selecting a leaf spring configuration to form a plurality of continuous coil configurations (55);

6. The force transmission system for a vehicle of claim 4, wherein: the coil structures (55) of the spring device (50) are arranged in a decreasing pattern from the first end (51) towards the second end (52) such that overlapping areas of adjacent coil structures (55) are connected in at least a partial area, such that energy accumulated in the coil structures (55) of the second end (52) is increased in an increasing pattern towards the coil structures (55) of the first end (51).

7. The force transmission system for a vehicle of claim 5, wherein: the coil structures (55) of the spring device (50) are arranged in a decreasing pattern from the first end (51) towards the second end (52) such that overlapping areas of adjacent coil structures (55) are connected in at least a partial area, such that energy accumulated in the coil structures (55) of the second end (52) is increased in an increasing pattern towards the coil structures (55) of the first end (51).

8. The force transmission system for a vehicle as defined in claim 1 or 4 or 6, wherein: the output gear set (60) rotates to drive the spring device (50) to rotate, so that the spring device (50) gradually tightens on the output shaft (90) from the second end (52) towards the first end (51) to store energy, and drives the output shaft (90) to rotate.

9. A force transmission system for a vehicle as claimed in claim 2 or 3, wherein: the second output gear (62) rotates to directly drive the spring device (50) to rotate, and energy is gradually accumulated on the output shaft (90) from the second end (52) towards the first end (51) to drive the output shaft (90) to rotate.

10. The force transmission system for a vehicle of claim 7, wherein: the second output gear (62) rotates to directly drive the spring device (50) to rotate, and energy is gradually accumulated on the output shaft (90) from the second end (52) towards the first end (51) to drive the output shaft (90) to rotate.