TWI790038B - Output transmission device for vehicles - Google Patents

Abstract

The utility model relates to an output transmission device for a vehicle, which provides functions such as a simplified structure, easy assembly, and reduced space volume. The output transmission device includes an output gear set and a differential mechanism combining the output gear set; the output gear set has a plurality of output gears with different diameters, which can freely rotate and drive one of the output shaft cylinders of the differential mechanism to rotate and output power. And, the output gear set is provided with a disc body and a gear part arranged on the disc body; wherein the disc body of the output gear with the smallest diameter is provided with a combination part, and cooperates with a fixer to directly fix the output gear with the smallest diameter on the output shaft cylinder. On one wing; improve the complex, cumbersome and time-consuming assembly of the old method.

Description

Output transmission device for vehicles

The present invention relates to an output transmission device for vehicles; in particular, it refers to a technique for directly fixing one of the output gears in the output gear set to the differential mechanism to achieve the functions of reducing volume, simplifying assembly and structure.

It is a common art to apply to vehicles or electric vehicles, such as transmission devices, gear sets to transmit power, differentials, etc., to make the vehicle move forward and backward. For example, Taiwan No. 87217364 "Automobile Transmission Device" (ie, US No. 6146306 "AUTOMOBILE TRANSMISSION DEVICE"), a typical embodiment is provided.

The variable speed transmission system of conventional vehicles includes manual, automatic, and continuous variable speed transmission systems; they make the power of the engine shaft or motor shaft pass through a speed change control mechanism, an input gear set fitted on an input shaft, And the (bevel gear) differential mechanism, output gear set and other devices arranged on an output shaft, so that the power is transmitted to the output shaft, so that the vehicle can obtain different speed ratios.

Basically, the variable speed control mechanism includes a plurality of spring-like bodies and control push cylinders respectively fitted in the input gear set and outside; through manual or automatic variable speed control, the motor brakes a worm wheel to rotate, and selectively drives different balls ( or push rod) to push the control push cylinder to make the spring body and the input gear set form an engaged or non-engaged state, so that the input gear sets with different numbers of teeth drive the output gear set and the differential mechanism respectively, so that the output force The shafts generate different rotational speeds to drive the vehicle.

The old law also revealed the means of improving the components or components of the differential mechanism; for example, Taiwan No. 104213496 "Differential Gear Structure Improvement", No. 106203295 "Vehicle Differential Gear Control System", No. 96201922 "Differential Gear Locking device ", the No. 92213712 " differential device of vehicle gearbox " patent case etc., system has provided feasible embodiment.

A problem related to vehicle transmission and differential gear in structural design, operation, and application is that the combination between the differential gear of the prior art and the output gear set must use multiple snap rings, bearings (for example, balls, rollers, etc.) Needles, one-way, thrust bearings, etc.) and other parts to maintain the stability of their freely rotating output power, thus forming a long-term confined to the inherent transmission mechanism, so that traditional transmission and differential devices usually have The situation of large volume, complex structure, troublesome assembly, time-consuming and high cost; and this situation is not what we expect.

Typically, these references show design skills in the construction and application of conventional transmissions and differentials in vehicular systems. If the redesign considers the cooperation between the output transmission mechanism and the differential device, its mechanism design meets the conditions of a simplified structure, and its structure is different from those used by ordinary users, and its operation and power transmission are simpler and more direct. , it will be able to change its power transmission type, which is different from the old method; or further reduce the space volume occupied by the transmission, differential device (or the entire output transmission system), not only relatively increase the mobility and configuration of the vehicle space , It is also beneficial to simplify the assembly operation of personnel, and improve the complex, troublesome and time-consuming high cost of the old assembly method; and these issues have not been taught or specifically disclosed in the above reference materials.

Yes, the main purpose of the present invention is to provide a power transmission device for vehicles, which provides a simplified structure, easy assembly and reduced space volume. The output transmission device includes an output gear set and a differential mechanism combining the output gear set; the output gear set has a plurality of output gears with different diameters, which can freely rotate and drive one of the output shaft cylinders of the differential mechanism to rotate and output power. by And, the output gear set is provided with a disc body and a gear part arranged on the disc body; the disc body of the output gear with the smallest diameter is provided with a combination part, which cooperates with the fixer so that the output gear with the smallest diameter is directly fixed on the output shaft cylinder On one wing; improve the complex, cumbersome and time-consuming assembly of the old method.

According to the output transmission device for vehicles of the present invention, the output gear set includes a first output gear, a second output gear and/or a third output gear; the diameter of the first output gear is greater than the diameter of the second output gear, and the second The diameter of the output gear is larger than the diameter of the third output gear. Therefore, the third output gear is provided with the above-mentioned disc body and the combination part; A structure in which the gears are fixed on the differential mechanism.

According to the output transmission device for vehicles of the present invention, the first output gear and/or the second output gear of the output gear set form an assembly area at a position away from the gear part, so that the first output gear and the second output gear are installed Set the combined output shaft cylinder. And, the assembly area is provided with at least a first section and a second section, and the first section and the second section are respectively equipped with bearing assemblies to form at least two rotational support points, so that the first output gear and/or the second output gear can obtain Stable transmission.

10: Input gear set

11: The first input gear

12: Second input gear

13: The third input gear

20: Variable speed control department

40: Bearing

45: One-way bearing

50: Secondary bearing

55: Fixer

60: output gear set

61: The first output gear

62: Second output gear

63: The third output gear

64: plate body

65: gear department

66: Assembly area

67: first paragraph

68: Second paragraph

69, 79: combination department

70: Differential mechanism

75: output shaft cylinder

76: wing

80: rotating shaft

90: output shaft

Fig. 1 is a schematic cross-sectional view of the structure of the embodiment of the present invention; it shows the relational position and structural cooperation of the output gear set, the speed change control part, the output gear set and the differential mechanism.

Figure 2 is a partial structural schematic diagram of Figure 1; it depicts the structural combination of the output gear set and the output shaft cylinder.

Figure 3 is another partial structural schematic diagram of Figure 1; it shows the structural combination of the output gear set, the differential mechanism, and the output shaft cylinder.

Please refer to Figures 1 and 2, the output transmission device for vehicles of the present invention includes a combination of a rotating shaft 80 (or an input shaft) connected to a power source and an output shaft 90; the power source (not shown) can be selected A type of motor, internal combustion engine or engine that makes the rotating shaft 80 generate counterclockwise or clockwise rotational power.

The figure shows that the rotating shaft 80 is provided with an input gear set 10 and a speed change control part 20 . The input gear set 10 selects a three-speed or four-speed transmission system; therefore, the input gear set 10 at least includes first to third input gears 11-13. The input gear set 10 and the speed change control part 20 are known techniques, so they are not described in detail.

With respect to the input gear set 10, an output gear set 60 and a differential mechanism 70 are installed on the output shaft 90 to form an output transmission device together. And, the output gear set 60 is rotatably fitted on one output shaft cylinder 75 of the differential mechanism 70 . Therefore, when the rotational power of the input shaft 80 is driven by the input gear set 10 to rotate the output gear set 60, the output gear set 60 will drive the differential mechanism 70 and the output shaft barrel 75 to rotate, so that the output shaft 90 can drive at different speeds. The wheels turn.

In the adopted embodiment, the output gear set 60 also selects a three- or four-speed transmission system, which has a plurality of output gears with different diameters, including the rotatable first to third output gears 61 to 63, which are respectively connected to the The first to third input gears 11 to 13 mesh. Between the first and second output gears 61, 62, the second output gear 62, and the output shaft cylinder 75, a one-way bearing 45 is arranged respectively; so that each output gear 61~63 can only allow the transmission of the lower-order gear and the higher-order gear in sequence. , but the higher-order gear cannot transmit the lower-order gear.

Figures 1 and 2 also depict that the diameter of the first output gear 61 is greater than the diameter of the second output gear 62, and the diameter of the second output gear 62 is greater than the diameter of the third output gear 63; and, the output gear set 60 is provided with a disc body 64 and the gear portion 65 disposed on the disc body 64 .

The figure shows that the first output gear 61 and/or the second output gear 62 of the output gear set 60 form an assembly area 66 at a position away from the gear part 65, so that the first output gear 61 and the second output gear 62 cooperate with the bearing 40 (for example, needle roller bearings or similar bearings), the combined output shaft cylinder 75 is installed.

In a feasible embodiment, the assembly area 66 is provided with a protruding or connecting plate body 64 at least the first section 67 and the second section 68; position between. And, the position between the second segment 68 of the first output gear 61 and the second output gear 62 is provided with a pair of bearings 50, and the position between the second segment 68 of the second output gear 62 and the output shaft cylinder 75 is also A sub bearing 50 is provided. Auxiliary bearing 50 can select ball bearing or its similar bearing.

Therefore, the first output gear 61 and the second output gear 62 cooperate with the bearing 40 of the first segment 67 and the auxiliary bearing 50 of the second segment 68, so that the first output gear 61 and the second output gear 62 respectively establish at least two rotations. The mechanism of the supporting point enables the first output gear 61 and/or the second output gear 62 to obtain stable transmission.

Please refer to Fig. 3, in the adopted preferred embodiment, the disc body 64 of the minimum diameter output gear (that is, the third output gear 63) is provided with a combination part 69, so that the third output gear 63 can be directly fixed on On the output shaft tube 75; improve the complex, cumbersome and time-consuming situations of the old method assembly.

In detail, the combination portion 69 of the third output gear 63 is configured as a bolt hole structure that can be combined with the fixer 55 . And, the output shaft cylinder 75 is formed with a wing portion 76 of a protruding structure; corresponding to the combined portion 69 of the third output gear 63, the wing portion 76 of the output shaft cylinder 75 (or the differential mechanism 70) is also configured with a bolt hole structure. The combination part 79 is convenient for personnel to operate the fixer 55 to directly and simply fix the third output gear 63 on the output shaft cylinder 75 (or the differential mechanism 70 ).

Typically, this applies to vehicle output transmissions and includes the following advantages and considerations compared to the old method:

1. The combined structure of the output gear set 60, the differential mechanism 70 and the output shaft cylinder 75 of the output transmission device has been redesigned for consideration. For example, the output gear set 60 is provided with a disc body 64 and an assembly area 66, and the assembly area 66 forms a first section 67 and a second section 68, and the bearing 40 and the auxiliary bearing 50 are respectively configured to establish a mechanism of at least two rotational support points, so that The power transmission of the first output gear 61 and the second output gear 62 obtains a stable effect; the third output gear 63 is provided with a combination part 69, and the differential mechanism 70 forms a wing part 76 and a combination part 79, and cooperates with parts such as the fixer 55, obviously. Different from the structural type of the conventional art.

2. In particular, the matching form of the third output gear 63 (or its combination part 69) and the differential mechanism 70 (or its wing part 76 and combination part 79) makes its mechanism design conform to the condition of simple structure, Allowing personnel to directly cooperate with the function of the combination of the fixer 55, not only the type and structure of the operation and assembly are different from those of the experienced user, but also make its operation and power transmission more simple and direct, thus changing its power transmission type; Relatively, it also further reduces the space volume occupied by the transmission and differential gear (or the entire output transmission system), relatively increases the degree of activity configuration of the vehicle space, and also facilitates the simplification of personnel assembly operations, while improving the complex, cumbersome and cumbersome assembly of the old method. Time-consuming and high cost situations.

Therefore, the present invention provides an effective output transmission device for vehicles. Its spatial form is different from the known ones, and has incomparable advantages in the old methods. It has shown considerable progress and is fully satisfied. Parts meet the requirements for invention patents.

However, the above-mentioned ones are only feasible embodiments of the present invention, and are not used to limit the scope of the present invention. That is, all equivalent changes and modifications made according to the patent scope of the present invention are covered by the patent scope of the present invention .

10: Input gear set

11: The first input gear

12: Second input gear

13: The third input gear

20: Variable speed control department

40: Bearing

45: One-way bearing

50: Secondary bearing

55: Fixer

60: output gear set

61: The first output gear

62: Second output gear

63: The third output gear

64: plate body

65: gear department

66: Assembly area

67: first paragraph

68: Second paragraph

69, 79: combination department

70: Differential mechanism

75: output shaft cylinder

76: wing

80: rotating shaft

90: output shaft

Claims (4)

An output transmission device for a vehicle, comprising a rotating shaft, an input gear set combined with the rotating shaft, an output gear set, and a differential mechanism of the combined output gear set; the output gear set and the differential mechanism are arranged on an output shaft; the output gear The group has a plurality of output gears with different diameters, which can rotatably drive one of the output shaft cylinders of the differential mechanism to rotate and output power; The disc body of the gear is provided with a combination part, so that the output gear with the smallest diameter is directly fixed on the output shaft cylinder; the combination part of the output gear with the smallest diameter is set as a bolt hole structure that can be combined with the fixer; The wing part of the structure; the combination part corresponding to the output gear with the smallest diameter, the wing part of the output shaft cylinder is equipped with a combination part, and the combination part on the wing part has a bolt hole structure; and the combination part of a fixed output gear with the smallest diameter and wing combination. The output transmission device for vehicles as described in Claim 1, wherein the rotating shaft is connected to a power source; the rotating shaft is provided with a speed change control part; the input gear set includes a first input gear, a second input gear and a third input gear ; With respect to the input gear set, the output gear set includes a first output gear, a second output gear and a third output gear, respectively meshing with the first input gear, the second input gear and the third input gear; the first output gear and the second A one-way bearing is arranged between the output gear, the second output gear and the output shaft cylinder; the diameter of the first output gear is larger than the diameter of the second output gear, and the diameter of the second output gear is larger than the diameter of the third output gear; The first output gear and the second output gear are located away from the gear part to form an assembly area, Make the first output gear and the second output gear cooperate with a bearing respectively, and install the combined output shaft cylinder. The output transmission device for vehicles as described in claim 2, wherein the assembly area is provided with a first section and a second section protruding from the disc body; the bearing is arranged at a position between the first section and the output shaft cylinder; And the position between the second section of the first output gear and the second output gear is provided with a pair of bearings, and the position between the second section of the second output gear and the output shaft cylinder is also provided with an auxiliary bearing, so that the first The output gear and the second output gear cooperate with the bearing of the first section and the auxiliary bearing of the second section to form at least two rotational support points respectively. The power transmission device for vehicles as described in claim 3, wherein the bearing is a needle bearing, and the auxiliary bearing is a ball bearing.

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