CN216923072U

CN216923072U - Output drive system for vehicle

Info

Publication number: CN216923072U
Application number: CN202123096440.6U
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: 2022-07-08
Anticipated expiration: 2031-12-10

Abstract

The utility model provides an output transmission system for a vehicle, which has the functions of simple assembly, power transmission and the like. The output transmission system comprises an output shaft and a spring device; and the output shaft is provided with an output gear set which can freely rotate to output power. The spring device is formed 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, and the second end is combined with 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 energy is accumulated by matching with the spring device, and the torque output action of the vehicle (or the output shaft) is improved; the situation that the known structure is complicated, the assembly is troublesome, the time is wasted, the length/volume of the mechanism is large and the cost is high is improved.

Description

Output drive system for vehicle

Technical Field

The present invention relates to a power take-off transmission system for a vehicle; in particular to a technology for improving the torque output function of a vehicle output shaft or output gear set combined spring device.

Background

Transmissions for vehicles or electric vehicles, such as transmissions, gear sets for transmitting power, differentials, etc., for advancing and retracting the vehicle, are known in the art. For example, taiwan patent application No. 87217364, "automotive TRANSMISSION" (i.e., US 6146306, "automotive TRANSMISSION DEVICE"), provides an exemplary embodiment.

Known vehicular variable speed drive systems include manual, automatic, and continuously variable transmission systems; they make the power of engine rotating shaft or motor rotating shaft pass through a speed-changing control mechanism, input gear set mounted on an input shaft, and (bevel gear) differential mechanism and output gear set mounted on an output shaft, so that the power can be transferred to said output shaft to make the vehicle obtain the motions with different speed-changing ratios.

Basically, the speed change control mechanism comprises a plurality of spring-like bodies and control push cylinders which are respectively assembled inside and outside the input gear set; the manual or automatic speed change control motor brakes a worm wheel disc to rotate, and selectively drives different balls (or push rods) to push the control push cylinder so as to enable the spring body and the input gear set to form a joint or non-joint state, and the input gear sets with different tooth numbers respectively drive the output gear set and the differential mechanism, so that the output shaft generates different rotating speeds to drive the vehicle.

One problem with the design, operation and application of vehicle transmissions is that the known prior art combinations of output shaft mechanisms and output gear sets require the use of multiple snap rings, bearings (e.g., balls, needles, single direction, thrust bearings, etc.) and the like to maintain the stability of their rotational output power.

For example, the output shaft mechanism in the prior art usually needs to be configured with a combination of at least 16 unidirectional bearings, thus forming a pattern which is limited by the inherent transmission mechanism for a long time, so that the traditional output transmission device usually has the situations of complicated structure, troublesome assembly, time consumption, large mechanism length/volume and high cost; which is not desirable.

Typically, these reference data show the design skills associated with known (power) transmissions in terms of construction and application in vehicle systems. If the matching situation of the output transmission device is considered in the repeated design, the mechanism design of the output transmission device conforms to the condition of simplified structure assembly, and the structure of the output transmission device is different from that of a user, the power transmission type of the output transmission device can be changed, and the output transmission device is different from the prior art, and relatively improves the known situations of complicated structure, troublesome assembly, time consumption, larger mechanism length/volume, higher cost and the like; or further achieving the effect of improving the torque output of the transmission device; none of these issues is suggested or specifically disclosed in the above referenced data.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks of the prior art, it is a primary object of the present invention to provide a power transmission system for a vehicle that provides ease of assembly and power transmission. The output transmission system comprises an output shaft and a spring device; and the output shaft is provided with an output gear set which can freely rotate to output power. The spring device is formed with a plurality of (continuous) 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, and the second end is combined with 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 energy is accumulated by matching with the spring device, and the torque output action of the vehicle (or the output shaft) is improved; the situation that the known structure is complicated, the assembly is troublesome, the time is wasted, the length/volume of the mechanism is large and the cost is high is improved.

According to the output transmission system for the vehicle, the coil structure configuration pattern of the spring device is from the first end to the second end, so that the overlapping area of the adjacent coil structures forms a descending pattern; and, each adjacent coil structure is connected at least in a partial region. 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 to the first end, and the output shaft relatively increases the torque output action.

Drawings

FIG. 1 is a schematic cross-sectional structural view of an embodiment of the present invention; the relation position and the structure matching situation 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; the structural combination of the power gear set and the spring device is depicted;

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

Description of reference numerals:

10 input force gear set

11 first force input gear

12 second input gear

13 third input gear

20 speed change control unit

40 bearing

45 one-way bearing

50 spring device

51 first end

52 second end

55-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 fastener

W wheel 10

Detailed Description

The following embodiments of the present invention are provided by way of specific examples, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Referring to fig. 1, 2 and 3, the present invention provides a power transmission system for a vehicle, which includes a combination of a rotating shaft 80 (or input shaft) connected to a power source and a power output shaft 90; the power source (not shown) may be in the form of a motor, internal combustion engine or engine, which generates counterclockwise or clockwise rotational power to the rotating shaft 80.

The rotating shaft 80 is shown to be provided with an input gear set 10 and a shift control portion 20. The input gear set 10 selects a three-gear (or four-file) transmission system; therefore, the input gear set 10 includes at least first to third input gears 11 to 13. The input gear set 10 and the shift control portion 20 are well known in the art and therefore are not described in detail.

In contrast to the input gear set 10, the output shaft 90 is provided with an output gear set 60, a spring device 50 (and/or a differential mechanism 70), which together form an output transmission system for outputting power. When the rotational power of the rotating 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 driving wheels W with different rotational speeds to rotate.

FIGS. 1, 2 and 3 also illustrate that the output gear set 60 is also selected as a three-gear (or four-gear) transmission system having a plurality of output gears with different diameters, including first to third rotatable output gears 61-63, which are respectively meshed with the first to third input gears 11-13. A one-way bearing 45 is arranged between the first output gear 61 and the second output gear 62 (and/or between the second output gear 62 and the third output gear 63); each output gear 61-63 can only allow the lower gear to transmit the higher gear but the higher gear can not transmit the lower gear.

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

The region between the second power gear 62 and the power 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 in a pattern wound around the output shaft 90.

In the illustrated embodiment, the spring assembly 50 defines a first end 51, a second end 52, the first end 51 engaging the bearing 40 (or one-way bearing) and the retainer 59 to engage (or combine) the output shaft 90; the fixing member 59 may select a key, a pin, or the like. And, the second end 52 is combined (or fixed) with the output gear set 60 (or the second output gear 62) by cooperating with the fixing member 59, 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 cooperating with the spring device 50, thereby improving the torque output action of the vehicle (or the output shaft).

Specifically, the coil structures 55 of the spring device 50 are arranged in a decreasing pattern from the first end 51 toward the second end 52 in the overlapping area of the adjacent coil structures 55, and each adjacent coil structure 55 is connected at least in a partial area, so that the energy accumulated in the coil structure 55 at the second end 52 is increased toward the coil structure 55 at the first end 51. Thus, as the spring device 50 rotates in response to rotation of the power gear set 60, the coil structures 55 closer to the first end 51 accumulate more energy (or force), and the coil structures 55 closer to the second end 52 accumulate less energy (or force).

That is, when the output gear set 60 rotates the spring device 50 and the output shaft 90, the spring device 50 gradually (tightly) accumulates energy on the output shaft 90 from the second end 52 toward the first end 51, and relatively (gradually) increases the torque output action of the output shaft 90.

For example, if the rotating shaft 80 drives the first input gear 11 to rotate the first output gear 61, a first gear (or a first speed) is defined; and, cooperate with the unidirectional bearing 45, make the second force output gear 62 rotate with the first force output gear 61 synchronously too. The rotation of the second output gear 62 drives the spring device 50 to rotate, and the spring device gradually pushes the energy accumulated on the output shaft 90 from the second end 52 to the first end 51, so as to drive the output shaft 90 to rotate.

The second gear (or second speed) is defined as the rotation axis 80 drives the second input gear 12 to rotate the second output gear 62; the second output gear 62 directly drives the spring device 50 to rotate by cooperating with the one-way bearing 45, and gradually forces the accumulated energy on the output shaft 90 from the second end 52 to the first end 51, so as to drive the output shaft 90 to rotate.

It can be understood that the third gear (or third speed) is defined when the rotating shaft 80 drives the third input gear 13 to drive the third output gear 63 to rotate; the third gear (or third speed) is a high gear, so that the third input gear 13 directly drives the third output gear 63 and the output shaft 90 without energy accumulation in the spring device 50.

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

the combined structure of the power gearset 60, the spring arrangement 50 and the power shaft 90 of the power transmission system has been heavily considered by design. For example, between the power gear set 60 and the power shaft 90, the spring device 50 is arranged; the spring device 50 is formed into a plurality of coil structures 50, and the direction of the spring device 50 from the first end 51 to the second end 52 causes the overlapped area of the adjacent coil structures 55 to form a decreasing type, which is significantly different from the prior art structure, and relatively improves the prior art structure, which is complicated in structure, troublesome in assembly, time-consuming, large in mechanism length/volume, high in cost, and the like.

In particular, the first end 51 of the spring device 50 is fixed on the output shaft 90, and the second end 52 is fixed on the output gear set 60, so that the mechanism design thereof achieves the effect of improving the torque output of the transmission system, and the function of only power output in the prior art is improved.

Therefore, the present invention provides an effective power transmission system for vehicles, which has a spatial configuration different from the known one and has incomparable advantages in the prior art, and represents a considerable progress, which is in full accordance with the requirements of the utility model patent.

It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

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

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

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

the spring device (50) is provided with a spring coil structure (55) which is wound on the output shaft (90); the spring device (50) is defined with a first end (51) and a second end (52), the first end (51) is connected with the output shaft (90), and the second end (52) is combined with the output gear set (60), so that when power is transmitted to the output gear set (60), the energy is accumulated by matching with the spring device (50), and the torsion output effect of the output shaft (90) is improved.

2. A power take-off drive train for a vehicle as claimed in claim 1, wherein: the output gear set (60) engages an input gear set (10); the input gear set (10) at least comprises a first input gear (11), a second input gear (12) and a third input gear (13);

the output gear set (60) is provided with a plurality of output gears with different diameters, and at least comprises a first output gear (61), a second output gear (62) and a third output gear (63) which are 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 rotating shaft (80) driven by a power source, 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. A power take-off drive train for a vehicle as claimed in 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 the third output gear (63) by matching with the fixer (99); a one-way bearing (45) is arranged between the second output gear (62) and the wing part (95).

4. A power take-off drive train for a vehicle as claimed in claim 1, wherein: the spring device (50) selects a structure of a plate spring to form a plurality of continuous coil structures (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); a fixing member (59) selects one of the key and the pin;

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

5. A power take-off transmission for a vehicle as claimed in claim 2 or claim 3, wherein: the spring device (50) selects a structure of a plate spring to form a plurality of continuous coil structures (55);

6. A power take-off transmission for a vehicle as claimed in claim 4, wherein: the coil structures (55) of the spring device (50) are arranged in a mode that the overlapped areas of the adjacent coil structures (55) form a descending mode from the first end (51) to the second end (52), and at least partial areas of each adjacent coil structure (55) are connected, so that the energy accumulated by the coil structures (55) at the second end (52) forms an ascending mode towards the energy accumulated by the coil structures (55) at the first end (51).

7. A power take-off transmission for a vehicle as claimed in claim 5, wherein: the coil structures (55) of the spring device (50) are arranged in a mode that the overlapped areas of the adjacent coil structures (55) form a descending mode from the first end (51) to the second end (52), and at least partial areas of each adjacent coil structure (55) are connected, so that the energy accumulated by the coil structures (55) at the second end (52) forms an ascending mode towards the energy accumulated by the coil structures (55) at the first end (51).

8. A power take-off transmission for a vehicle as claimed 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) is gradually forced on the output shaft (90) from the second end (52) to the first end (51) to accumulate energy, and the output shaft (90) is driven to rotate.

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

10. A power take-off drive train for a vehicle as claimed in claim 7, wherein: the second output gear (62) rotates to directly drive the spring device (50) to rotate, and the spring device is gradually forced on the output shaft (90) from the second end (52) to the first end (51) to accumulate energy so as to drive the output shaft (90) to rotate.