CN116255432A - Output drive for a vehicle - Google Patents

Abstract

The invention discloses a power transmission device for a vehicle, which provides functions such as simple structure, convenient assembly, and reduced space volume. The output transmission device includes an output gear set and a differential mechanism combined with the output gear set; the output gear set has a plurality of output gears with different diameters, which can freely rotate and drive an output shaft cylinder of the differential mechanism to rotate and output power. And, the output gear set is provided with a disk body and a gear part arranged on the disk body; wherein the disk 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; improving complex, cumbersome and time-consuming assembly of existing structures.

Description

Output transmission for vehicles

technical field

The present invention relates to an output transmission device for vehicles; in particular, it refers to a technology that directly fixes one output gear of the output gear set to a differential mechanism to achieve functions such as volume reduction, simplification of assembly and structure.

Background technique

It is a known technology 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, China Taiwan No. 87217364 "Automotive Transmission Device" (ie, US No. 6146306 "AUTOMOBILE TRANSMISSION DEVICE") and the patent case provide a typical embodiment.

The variable speed transmission system of existing vehicles includes types such as manual, automatic, and continuous variable speed transmission systems; they make the power of the engine shaft or the 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 inside and outside the input gear set; through manual or automatic variable speed control motor braking, a worm gear disc rotates, 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 disengaged 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 The output shaft generates different rotational speeds to drive the vehicle.

The prior art also discloses the means of improving the various parts or components of the differential mechanism; for example, China Taiwan No. 104213496 "Differential Gear Structure Improvement", No. 106203295 "Vehicle Differential Control System", No. 96201922 "Differential Transmission locking device ", the No. 92213712 " differential device of vehicle gearbox " patent case etc., have 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 existing technology; 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 work of personnel, and improve the complex, troublesome, time-consuming and high cost of the existing structure assembly; and these issues have not been taught or specifically disclosed in the above reference materials.

Contents of the invention

The object of the present invention is to provide a power transmission device for vehicles, which provides functions such as simplified structure, easy assembly and reduced space volume. The output transmission device includes an output gear set and a differential mechanism combined with the output gear set; the output gear set has a plurality of output gears with different diameters, which can freely rotate and drive an output shaft cylinder of the differential mechanism to rotate and output power. And, the output gear set is provided with a disk body and a gear part arranged on the disk body; wherein the disk 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 in the prior art.

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.

Description of drawings

Fig. 1 is a schematic sectional view of the structure of an 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.

Fig. 2 is a partial structural schematic diagram of Fig. 1; depicting the structural combination of the output gear set and the output shaft cylinder.

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

Explanation of reference signs

10 input gear sets

11 The first input gear

12 Second input gear

13 Third input gear

20 Shift Control Unit

40 bearings

45 one-way bearing

50 pairs of bearings

55 retainer

60 output gear set

61 The first output gear

62 Second output gear

63 Third output gear

64 plate body

65 gear part

66 Assembly area

67 first paragraph

68 Second paragraph

69, 79 combination department

70 differential mechanism

75 output shaft cylinder

76 wings

80 axis of rotation

90 output shaft.

Detailed ways

Please refer to Fig. 1, 2, the output power transmission device that is used for vehicle of the present invention, comprises the combination of a rotating shaft 80 (or called input shaft) and output shaft 90 that connects power source; Power source (figure not shown) can select a The type of motor, internal combustion engine or engine makes the rotating shaft 80 generate counterclockwise or clockwise rotating 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 includes at least 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 an 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 cylinder 75 to rotate, so that the output shaft 90 can generate different rotational speeds. The wheels turn.

In the adopted embodiment, the output gear set 60 also selects a three-speed or four-speed transmission system, which has a plurality of output gears with different diameters, including the rotatable first to third output gears 61-63, respectively and the The first to third input gears 11 to 13 mesh. Between the first and second output gears 61 and 62 and the second and third output gears 62 and 63, 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 gear of the higher order cannot transmit the gear of the lower order.

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 part 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 preferred embodiment adopted, the dish body 64 of the output gear (that is, the 3rd output gear 63) of minimum diameter is provided with combination part 69, makes the 3rd output gear 63 can be directly fixed on output force On the shaft tube 75; improve the complex, cumbersome and time-consuming assembling of existing structures.

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, compared with the prior art, this output transmission device for vehicles includes the following advantages and considerations:

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 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; Correspondingly, it also further reduces the volume of space occupied by the transmission and differential gear (or the entire output transmission system), relatively increases the activity configuration of the vehicle space, and is also conducive to simplifying personnel assembly operations, while improving the complex and cumbersome assembly of existing structures. and time-consuming and high costs.

Therefore, the present invention provides an effective output transmission device for vehicles, whose spatial configuration is different from the existing ones, and has incomparable advantages in the prior art.

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 .

Claims (8)

1. A power transmission device for a vehicle, characterized in that: comprising a rotating shaft, an input gear set of a combined rotating shaft, an output gear set and a differential mechanism of a combined output gear set; the output gear set and the differential mechanism are arranged on on the output shaft; The output gear set has a plurality of output gears with different diameters, which can freely rotate and drive an output shaft cylinder of the differential mechanism to rotate and output power; and The output gear set is provided with a disk body and a gear part arranged on the disk body; wherein the disk body of the output gear with the smallest diameter is provided with a combination part, so that the output gear with the smallest diameter is directly fixed on the output shaft cylinder. 2. The output transmission device for vehicles according to claim 1, characterized in that: the rotating shaft is connected to a power source; the rotating shaft is provided with a speed change control unit; The input gear set includes the first input gear, the second input gear and the third input gear; relative to the input gear set, the output gear set includes the first output gear, the second output gear and the third output gear, respectively meshing with the first input gear , the second input gear and the third input gear; A one-way bearing is arranged between the first output gear and the second output gear, and between the second output gear and the third output gear; The diameter of the first output gear is greater than the diameter of the second output gear, and the diameter of the second output gear is greater 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, so that the first output gear and the second output gear respectively cooperate with a bearing, and the combined output shaft cylinder is installed. 3. The output transmission device for vehicles according to claim 2, characterized in that: 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; 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 output The 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. 4. The output transmission device for vehicles according to claim 1, characterized in that: the combination part of the output gear with the smallest diameter is set as a bolt hole structure that can be combined with a fixer; The output shaft cylinder forms a wing with a protruding structure; Corresponding to the combined part of the output gear with the smallest diameter, the wing of the output shaft cylinder is equipped with a combined part, and the combined part on the wing has a bolt hole structure; and A retainer combines the combined portion of the smallest diameter output gear and the combined portion of the wing. 5. The output transmission device for vehicles according to claim 2, characterized in that: the combination part of the third output gear is set as a bolt hole structure that can be combined with a fixer; The output shaft cylinder forms a wing with a protruding structure; Corresponding to the combined part of the output gear with the smallest diameter, the wing of the output shaft cylinder is equipped with a combined part, and the combined part on the wing has a bolt hole structure; and A retainer combines the combined portion of the smallest diameter output gear and the combined portion of the wing. 6. The output transmission device for vehicles according to claim 3, characterized in that: the combination part of the third output gear is set as a bolt hole structure that can be combined with a fixer; The output shaft cylinder forms a wing with a protruding structure; Corresponding to the combined part of the output gear with the smallest diameter, the wing of the output shaft cylinder is equipped with a combined part, and the combined part on the wing has a bolt hole structure; and A retainer combines the combined portion of the smallest diameter output gear and the combined portion of the wing. 7. The power transmission device for vehicles according to claim 3, wherein the bearing is a needle bearing, and the auxiliary bearing is a ball bearing. 8. The power transmission device for vehicles according to claim 6, wherein the bearing is a needle bearing, and the auxiliary bearing is a ball bearing.

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