JP-2026075406-A - Transmission and vehicle

JP2026075406AJP 2026075406 AJP2026075406 AJP 2026075406AJP-2026075406-A

Abstract

[Problem] To provide a transmission and vehicle that have a simple configuration, can reduce manufacturing costs, can be miniaturized and lightweight, and offer a high degree of layout flexibility. [Solution] A transmission 100 that transmits rotation at multiple gear ratios between a first shaft 101 and a second shaft 102 having substantially parallel rotating shafts, wherein the first shaft 101 has a coaxially rotatable first rotating body 110, a second rotating body 120 and a switching rotating body 150, the second shaft 102 has a third rotating body 130 and a fourth rotating body 140, the first rotating body 110 and the third rotating body 130 have rotation transmitted via a first transmission strip 111, the second rotating body 120 and the fourth rotating body 140 have rotation transmitted via a second transmission strip 121, and the switching rotating body 150 is configured to be switchable between a first transmission state in which power is transmitted from the switching rotating body 150 to the first rotating body 110 and a second transmission state in which power is transmitted from the switching rotating body 150 to the second rotating body 120. [Selection Diagram] Figure 2

Inventors

綱島宏
田邊充
廣田翔二
西田篤史
星野亮平
山内昌彦
小山剛司

Assignees

株式会社椿本チエイン

Dates

Publication Date: 20260508
Application Date: 20241022

Claims (4)

A transmission having a first shaft and a second shaft having substantially parallel rotation axes, and transmitting rotation between the first shaft and the second shaft at multiple gear ratios, The first shaft comprises a first rotating body and a second rotating body that are rotatable coaxially, and a switching rotating body provided between the first rotating body and the second rotating body that rotates together with the first shaft. The second shaft has a third rotating body that rotates in conjunction with the first rotating body, and a fourth rotating body that rotates in conjunction with the second rotating body. The first rotating body and the third rotating body have their rotations transmitted to them via the first transmission strip. The second rotating body and the fourth rotating body have their rotations transmitted to them via the second transmission strip. The transmission is characterized in that the switching rotating body is configured to be switchable between a first transmission state in which power is transmitted from the switching rotating body to the first rotating body and a second transmission state in which power is transmitted from the switching rotating body to the second rotating body.
The switching rotating body is movable in the axial direction of the first axis, The transmission according to claim 1, characterized in that the switching rotating body moves toward the first rotating body, and the first transmission state is realized when one axial side surface of the switching rotating body comes into contact with the axial side surface of the first rotating body toward the switching rotating body, and the second transmission state is realized when the switching rotating body moves toward the second rotating body, and the other axial side surface of the switching rotating body comes into contact with the axial side surface of the second rotating body toward the switching rotating body.
The first transmission strip is composed of a chain wrapped around the first rotating body and the third rotating body. The transmission according to claim 1, characterized in that the second transmission element is composed of a chain wrapped around the second rotating body and the fourth rotating body.
A vehicle equipped with a transmission in the power transmission path from the drive source to the drive wheels, A vehicle characterized in that the transmission is configured as the transmission described in any one of claims 1 to 3.

Description

This invention relates to a transmission having a first shaft and a second shaft having substantially parallel rotation axes, and transmitting rotation between the first shaft and the second shaft at multiple gear ratios, and to a vehicle equipped with this transmission. Conventionally, a transmission system having a first shaft and a second shaft having substantially parallel rotation axes, and transmitting rotation between the first shaft and the second shaft at multiple gear ratios, and a vehicle equipped with said transmission system are known (see, for example, Patent Document 1). Automatic transmission A (the names and reference numerals of the constituent articles in this paragraph follow the notation in Patent Document 1, etc.) and an automobile equipped with automatic transmission A have an auxiliary transmission 3 that transmits power from a torque converter 2 connected to an engine output shaft 1 to a main transmission 4. The auxiliary transmission 3 has a chain drive mechanism 32 that transmits power from an input shaft 31 to an input shaft 41 via a clutch 34, a chain drive mechanism 32 that transmits power from an input shaft 31 to an input shaft 41 via a clutch 36, and a chain drive mechanism 33 with different gear ratios, and is configured to be able to change gears by selectively connecting the clutch 34 and the clutch 36. Japanese Patent Application Laid-open No. 63-083449 A schematic diagram of a mobile vehicle, which is one embodiment of the present invention.A schematic diagram of the neutral position of a transmission, which is one embodiment of the present invention.A schematic diagram of the first transmission state of a transmission, which is one embodiment of the present invention.A schematic diagram of the second transmission state of a transmission, which is one embodiment of the present invention. The transmission and vehicle of the present invention will be described below with reference to the drawings. A vehicle 200 according to one embodiment of the present invention has, as schematically shown in Figure 1, two driven wheels 203 at the front in the direction of travel (in the direction of the white arrows shown by solid lines in Figure 1) and two drive wheels 202 at the rear in the direction of travel. The two drive wheels 202 are driven by the rotation of the output shaft of a drive device 201, such as an electric motor or engine, which is transmitted to the drive wheel axle 204 via a transmission 100 and a differential 205, thereby driving the vehicle 200 forward or backward. Furthermore, additional power transmission paths may be added after the transmission 100 to make all four wheels drive wheels 202. Moreover, regardless of the total number of drive wheels and driven wheels in the vehicle, any configuration is acceptable as long as at least one drive wheel is driven via the transmission 100. A transmission 100 according to one embodiment of the present invention has, as schematically shown in Figure 2, a first shaft 101 to which the rotation of the output shaft of the drive unit 201 is transmitted, and a second shaft 102 to which the rotation is transmitted to the drive wheel 202. The first shaft 101 includes a first sprocket 110, which is a first rotating body, and a second sprocket 120, which is a second rotating body, both of which are coaxial and rotatable independently of the first shaft 101, and a switching rotating body 150, which is provided between the first sprocket 110 and the second sprocket 120, rotates integrally with the first shaft 101, and is movable in the axial direction. The second shaft 102 has a third sprocket 130, which is a third rotating body, and a fourth sprocket 140, which is a fourth rotating body, both of which rotate together. The third sprocket 130 rotates in conjunction with the first sprocket 110 via the first chain 111, which is the first transmission element, and the fourth sprocket 140 rotates in conjunction with the second sprocket 120 via the second chain 121, which is the second transmission element. The tooth ratio of the first sprocket 110 and the third sprocket 130 is set to be different from the tooth ratio of the second sprocket 120 and the fourth sprocket 140. Here, by adjusting the number of teeth on the first sprocket 110 and the third sprocket 130, and the number of teeth on the second sprocket 120 and the fourth sprocket 140, the gear ratio can be freely set to match the driving performance of the vehicle 200. The switching rotating body 150 is configured to be movable in the axial direction of the first shaft 101 and to be fixed in its axial position by an operating means (not shown). A first clutch surface 151 is formed on the axial side of the switching rotating body 150 on the first sprocket 110 side, and a second clutch surface 152 is formed on the side on the second sprocket 120 side. A first clutch receiving surface 112 is formed on the side of the first sprocket 110 facing the axial switching rotating body 150, a