Transmission power transmission device and automobile

Abstract

The invention discloses a transmission power transmission device and a car, and relates to the field of transmission structure; the transmission device comprises a motor, a dual clutch and a power transmission mechanism. A first clutch is integrated on the rotor of the motor, which is used to separate or engage with the output end of the engine; the dual clutch comprises a second clutch and a third clutch; the power transmission mechanism comprises an inner input shaft, an outer input shaft, a power transmission component and an output shaft assembly, the inner input shaft is separated or engaged with the second clutch, the outer input shaft is separated or engaged with the third clutch, the outer input shaft is sleeved on the outer side of the inner input shaft, the output shaft assembly is coaxially arranged with the inner input shaft and the outer input shaft, and the power transmission component is engaged with the inner input shaft or the outer input shaft to transmit the power input by the inner input shaft or the outer input shaft to the output shaft assembly. The device has a compact structure, a small overall size, a low cost, a stronger power performance and better fuel economy.

Description

Technical Field

[0001] The present invention relates to the field of transmission structure, in particular to a transmission power transmission device and a car. Background Art

[0002] With energy shortages and increasingly stringent national requirements on automobile emissions, coupled with the shortcomings of pure electric vehicles such as high battery costs, limited charging, and short vehicle mileage, hybrid power devices that combine engine technology with motor technology are increasingly favored by major automakers.

[0003] Among the existing hybrid systems, most are horizontally mounted, and the structures they adopt are mostly distributed structures of the engine and the motor, and the power transmission devices are mainly continuously variable automatic transmissions (CVT), hydraulic automatic transmissions (AT) or mechanical automatic transmissions (AMT), which have disadvantages such as low transmission efficiency, limited high torque, and poor economy. Few car companies are involved in longitudinal transmissions, especially hybrid longitudinal transmissions, and the longitudinal transmissions currently involved have problems such as large size and structure, and high cost. Summary of the invention

[0004] The object of the present invention is to provide a longitudinally mounted transmission power transmission device, which has a compact structure, a small overall size, a low cost, a stronger power performance and a better fuel economy.

[0005] Another object of the present invention is to provide a vehicle, which includes the above-mentioned transmission power transmission device, thereby also having the advantages of compact structure, small size, low cost and sufficient power.

[0006] The embodiment of the present invention is achieved as follows:

[0007] In a first aspect, the present invention provides a transmission power transmission device, comprising:

[0008] A motor, a rotor of the motor is integrated with a first clutch, and the first clutch is used to separate or engage with an output end of the engine;

[0009] A dual clutch, comprising a second clutch and a third clutch coaxially arranged with the first clutch, and both the second clutch and the third clutch can be selectively separated from or engaged with the output shaft of the motor;

[0010] The power transmission mechanism includes an inner input shaft, an outer input shaft, a power transmission component and an output shaft assembly. The inner input shaft is separated from or engaged with the second clutch, the outer input shaft is separated from or engaged with the third clutch, the outer input shaft is loosely sleeved on the outer side of the inner input shaft, the output shaft assembly is coaxially arranged with the inner input shaft and the outer input shaft, and the power transmission component is engaged with the inner input shaft or the outer input shaft to transmit the power input by the inner input shaft or the outer input shaft to the output shaft assembly.

[0011] In an optional embodiment, the power transmission assembly includes eight forward gear assemblies, an intermediate shaft, a reverse gear shaft, and a reverse gear assembly;

[0012] The eight forward gear assemblies are respectively a first gear assembly, a second gear assembly, a third gear assembly, a fourth gear assembly, a fifth gear assembly, a sixth gear assembly, a seventh gear assembly and an eighth gear assembly, and the sixth gear assembly is fixedly connected to the output shaft assembly; the first gear assembly, the third gear assembly, the fifth gear assembly and the seventh gear assembly sequentially transmit power to the output shaft assembly through the outer input shaft, the intermediate shaft and the sixth gear assembly; the second gear assembly, the fourth gear assembly and the eighth gear assembly sequentially transmit power to the output shaft assembly through the inner input shaft, the intermediate shaft and the sixth gear assembly; the reverse gear assembly is engaged with the second gear assembly, and sequentially transmits power to the output shaft assembly through the inner input shaft, the second gear assembly, the reverse gear shaft and the sixth gear assembly.

[0013] In an optional embodiment, the first gear assembly, the second gear assembly, the third gear assembly, the fourth gear assembly, the fifth gear assembly, the sixth gear assembly, the seventh gear assembly and the eighth gear assembly all include a driving wheel and a driven wheel of meshing transmission;

[0014] The driving wheels of the first gear assembly, the third gear assembly, the fifth gear assembly and the seventh gear assembly are sleeved on the outside of the outer input shaft, and the driven wheels of the first gear assembly, the third gear assembly, the fifth gear assembly and the seventh gear assembly are sleeved on the outside of the intermediate shaft;

[0015] The driving wheels of the second gear assembly and the fourth gear assembly are sleeved on the outside of the inner input shaft, the driven wheels of the eighth gear assembly are sleeved on the outside of the inner input shaft, and the driven wheels of the sixth gear assembly are fixedly connected to the output shaft assembly; the driven wheels of the second gear assembly and the fourth gear assembly are sleeved on the outside of the intermediate shaft, and the driving wheels of the sixth gear assembly and the eighth gear assembly are sleeved on the outside of the intermediate shaft.

[0016] In an optional embodiment, the reverse gear assembly includes a reverse gear driven wheel, a reverse gear idler wheel and a reverse gear synchronizer;

[0017] The reverse idler gear is sleeved on the outside of the reverse shaft and meshes with the driven wheel of the sixth gear assembly for transmission; the reverse driven wheel is sleeved on the outside of the reverse shaft and meshes with the driven wheel of the second gear assembly for transmission; the reverse synchronizer is arranged on the reverse shaft and is used to separate or engage with the reverse driven wheel, so that when engaging with the reverse driven wheel, the power transmitted from the driven wheel of the second gear assembly to the reverse driven wheel is transmitted to the reverse idler gear through the reverse shaft, so as to continue to transmit the power directly to the output shaft assembly through the driven wheel of the sixth gear assembly.

[0018] In an optional embodiment, a first synchronizer, a second synchronizer and a third synchronizer are further provided on the intermediate shaft;

[0019] The first synchronizer is located between the first gear assembly and the third gear assembly, and is used to selectively engage or disengage with the driven wheel of the first gear assembly or the driven wheel of the third gear assembly; the second synchronizer is arranged between the seventh gear assembly and the fifth gear assembly, and is used to selectively engage with the driven wheel of the seventh gear assembly or the driven wheel of the fifth gear assembly; the third synchronizer is located between the second gear assembly and the fourth gear assembly, and is used to selectively engage with the driven wheel of the second gear assembly or the driven wheel of the fourth gear assembly.

[0020] In an optional embodiment, a fourth synchronizer is further provided on the inner input shaft, and the fourth synchronizer is located between the eight-speed assembly and the six-speed assembly, and is used for selectively engaging with the driven wheel of the eight-speed assembly or the driven wheel of the six-speed assembly.

[0021] In an optional embodiment, the transmission power transmission device also includes a case, and the power transmission mechanism is arranged in the case; the case includes a front case and a rear case that are relatively and spaced apart; the motor is arranged outside the case and adjacent to the front case; a first gear assembly is arranged close to the front case; the output shaft assembly is arranged close to the rear case; the inner input shaft, the outer input shaft and the intermediate shaft are all arranged to extend longitudinally in the direction from the front case to the rear case; and the outer input shaft is loosely sleeved on the outside of the inner input shaft and supported by the front case; the two ends of the inner input shaft and the intermediate shaft are respectively supported by the front case and the rear case.

[0022] In an optional embodiment, a center link plate is further provided in the housing, the center link plate is arranged between the front housing and the rear housing, and is arranged parallel to the front housing and the rear housing; the inner input shaft and the intermediate shaft are also supported on the center link plate, and the two ends of the reverse gear shaft are supported on the center link plate and the rear housing;

[0023] And along the direction from the front box body to the center connecting plate, the first gear assembly, the third gear assembly, the seventh gear assembly, and the fifth gear assembly are arranged in sequence; in the direction from the center connecting plate to the rear box body, the second gear assembly, the fourth gear assembly, the eighth gear assembly, and the sixth gear assembly are arranged in sequence, and the second gear assembly is arranged adjacent to the center connecting plate.

[0024] In an optional embodiment, both ends of the intermediate shaft are supported by bearings on the front housing and the rear housing, and a parking ratchet is provided at the position where the intermediate shaft extends out of the rear housing. The parking ratchet is sleeved on the outside of the intermediate shaft and rigidly connected to the intermediate shaft.

[0025] In a second aspect, the present invention provides a vehicle, comprising:

[0026] In any of the above-mentioned embodiments, the transmission power transmission device, the engine and the differential, the output end of the engine is engaged or disengaged with the first clutch integrated on the rotor of the motor, and the differential is connected and engaged with the output shaft assembly of the transmission power transmission device.

[0027] The embodiments of the present invention have at least the following advantages or beneficial effects:

[0028] The embodiment of the present invention provides a transmission power transmission device, which includes a motor, a dual clutch and a power transmission mechanism. A first clutch is integrated on the rotor of the motor, and the first clutch is used to separate or engage with the output end of the engine; the dual clutch includes a second clutch and a third clutch coaxially arranged with the first clutch, and the second clutch and the third clutch can be selectively separated or engaged with the output shaft of the motor; the power transmission mechanism includes an inner input shaft, an outer input shaft, a power transmission component and an output shaft assembly, the inner input shaft is separated or engaged with the second clutch, the outer input shaft is separated or engaged with the third clutch, the outer input shaft is loosely sleeved on the outer side of the inner input shaft, the output shaft assembly is coaxially arranged with the inner input shaft and the outer input shaft, and the power transmission component is engaged with the inner input shaft or the outer input shaft to transmit the power input by the inner input shaft or the outer input shaft to the output shaft assembly. The transmission power transmission device is a longitudinally mounted transmission, which integrates the first clutch inside the motor, and can realize the engagement or disengagement of the motor and the engine output end, so as to facilitate the switching of the motor and engine modes. At the same time, the output end of the motor is connected to the inner input shaft and the outer input shaft respectively through the second clutch and the third clutch to realize the power output of each gear. Without changing the traditional driving habits, the overall size of the transmission can be smaller, the compactness is higher, the reliability is better, the cost is lower, and the power is stronger.

[0029] An embodiment of the present invention further provides an automobile, which includes the above-mentioned transmission power transmission device, and thus also has the advantages of compact structure, small size, low cost and sufficient power. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic structural diagram of a transmission power transmission device provided in an embodiment of the present invention.

[0032] Icons: 100-transmission power transmission device; 101-motor; 103-first clutch; 105-dual clutch; 107-second clutch; 109-third clutch; 111-power transmission mechanism; 113-inner input shaft; 115-outer input shaft; 117-intermediate shaft; 119-output shaft assembly; 128-first gear driving wheel; 129-first gear driven wheel; 130-second gear driving wheel; 131-second gear driven wheel; 132-third gear driving wheel; 133-third gear driven wheel; 134-fourth gear driving wheel; 135-fourth gear driven wheel; 136-fifth gear driving wheel; 137-fifth gear driven wheel; 138-sixth gear driving wheel; 139-sixth gear driven wheel; 140-seventh gear driving wheel; 141-seventh gear driven wheel; 142-eighth gear driving wheel; 143-eighth gear driven wheel; 144-first synchronizer; 145-second synchronizer; 146-third synchronizer; 147-fourth synchronizer; 149-reverse gear shaft; 150-reverse gear idler wheel; 151-reverse gear driven wheel; 152-front case; 153-rear case; 154-center link plate; 155-parking ratchet; 156-reverse gear synchronizer. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Figure 1 This is a schematic diagram of the structure of the transmission power transmission device 100 provided in this embodiment. Figure 1 This embodiment provides a transmission power transmission device 100, which is mainly used in the automotive field, and is specifically used in hybrid power system vehicles, and its input end is connected to the output end of the engine in the vehicle, and its output end is connected to the differential to output the power of each gear. Of course, in other embodiments, it can also be applied to other types of vehicles, and this embodiment is not limited.

[0040] For details, please refer again Figure 1 In this embodiment, a first clutch 103 is integrated on the rotor of the motor 101, and the first clutch 103 is used to separate or engage with the output end of the engine. By setting it in this way, the switching between the motor 101 and the engine mode can be easily realized, making the engagement between the entire transmission power transmission device 100 and the engine more compact and reliable.

[0041] In detail, the dual clutch 105 includes a second clutch 107 and a third clutch 109 which are coaxially arranged with the first clutch 103, and the second clutch 107 and the third clutch 109 can be selectively separated from or engaged with the output shaft of the motor 101. By setting the dual clutch 105, the transmission and the motor 101 can be highly integrated, thereby ensuring the overall power of the entire transmission power transmission device 100, thereby also reducing its size, weight and cost accordingly.

[0042] In detail, the power transmission mechanism 111 includes an inner input shaft 113, an outer input shaft 115, a power transmission component and an output shaft assembly 119. The inner input shaft 113 is separated or engaged with the second clutch 107, and the outer input shaft 115 is separated or engaged with the third clutch 109. At the same time, only one of the second clutch 107 and the third clutch 109 is in an engaged state with the output end of the motor 101, and the other is separated from the output end of the motor 101, so as to complete the transmission of power from the dual clutch 105 to the inner input shaft 113 or the outer input shaft 115, that is, the power of the motor 101 can be output selectively, so as to facilitate the selection and adjustment of different gears.

[0043] At the same time, the inner input shaft 113 is arranged in parallel with the outer input shaft 115, and the outer input shaft 115 is sleeved on the outer side of the inner input shaft 113, and the output shaft assembly 119 is arranged coaxially with the inner input shaft 113 and the outer input shaft 115, so that the entire transmission power transmission mechanism 111 is arranged longitudinally, which is different from the transverse arrangement of the prior art. And the power transmission assembly can be connected with the inner input shaft 113 or the outer input shaft 115, so that the power input by the inner input shaft 113 or the outer input shaft 115 can be transmitted to the output shaft assembly 119, so as to be connected with the differential, so as to realize the power output of each gear, and no matter which gear is selected, it can transmit the power to the output shaft assembly 119 through the inner input shaft 113 or the outer input shaft 115. Furthermore, by such an arrangement, the overall size of the transmission can be smaller, more compact, more reliable, lower in cost, and more powerful without changing the traditional driving habits.

[0044] Please refer again Figure 1In this embodiment, the power transmission mechanism 111 includes eight forward gear assemblies, an intermediate shaft 117, a reverse gear shaft 149 and a reverse gear assembly. The intermediate shaft 117 and the reverse gear shaft 149 are parallel to the inner input shaft 113 and the outer input shaft 115 and are arranged at intervals. The eight forward gear assemblies are respectively a first gear assembly, a second gear assembly, a third gear assembly, a fourth gear assembly, a fifth gear assembly, a sixth gear assembly, a seventh gear assembly and an eighth gear assembly. The sixth gear assembly is fixedly connected to the output shaft assembly 119, so that the sixth gear assembly can directly transmit power to the output shaft assembly 119 through the inner input shaft 113. The odd-numbered gear assemblies are connected to the outer input shaft 115, so that the power is transmitted to the intermediate shaft 117 through the outer input shaft 115, and then transmitted to the output shaft assembly 119 through the sixth gear assembly to output the power; that is, the third clutch 109 controls the first gear, the third gear, the fifth gear and the seventh gear, and can also output the power of the corresponding gear through the sixth gear assembly. The even-numbered gear components are connected to the inner input shaft 113, and the second gear component, the fourth gear component and the eighth gear component can transmit power to the output shaft assembly 119 through the inner input shaft 113, the intermediate shaft 117 and the sixth gear component in sequence; that is, the second clutch 107 controls the second gear, the fourth gear, the sixth gear and the eighth gear, so that the selection and adjustment of the gear position are more convenient, thereby making the structure of the entire power transmission mechanism 111 more compact.

[0045] At the same time, the first gear assembly, the third gear assembly, the fifth gear assembly and the seventh gear assembly sequentially transmit power to the output shaft assembly 119 through the outer input shaft 115, the intermediate shaft 117 and the sixth gear assembly; the sixth gear assembly can directly transmit power to the output shaft assembly 119 through the inner input shaft 113; the second gear assembly, the fourth gear assembly and the eighth gear assembly sequentially transmit power to the output shaft assembly 119 through the inner input shaft 113, the intermediate shaft 117 and the sixth gear assembly. The reverse gear assembly is arranged on the reverse gear shaft 149 and can cooperate with the second gear assembly, and transmit power to the output shaft assembly 119 through the inner input shaft 113, the second gear assembly, the reverse gear shaft 149 and the sixth gear assembly sequentially, so as to realize the output of the reverse gear. That is, among the eight forward gear assemblies provided in this embodiment, the six-gear assembly can be used as an intermediate transmission assembly, and the six-gear assembly can not only directly transmit power to the output shaft assembly 119 when the sixth gear is selected, but also transmit the power of other gears to the output shaft assembly 119 through the transmission of the structure of the six-gear assembly when other gears are selected. At the same time, when the reverse gear assembly is selected, the second gear assembly and the sixth gear assembly can simultaneously serve as the power transmission components of the reverse gear assembly to output the power when the reverse gear is selected. That is, the power output of the eight forward gear assemblies and one reverse gear assembly provided in this embodiment can rely on the original structure of the second gear assembly and the sixth gear assembly, without the need to set up other transmission structures, so that the overall structure size of the transmission is smaller, the reliability is higher, the cost is lower, and the power is stronger.

[0046] For more details, please refer again to Figure 1In this embodiment, the first gear assembly, the second gear assembly, the third gear assembly, the fourth gear assembly, the fifth gear assembly, the sixth gear assembly, the seventh gear assembly and the eighth gear assembly all include a driving wheel and a driven wheel, and the driving wheel and the driven wheel are meshed with each other. That is, the first gear assembly includes a first gear driving wheel 128 and a first gear driven wheel 129, the second gear assembly includes a second gear driving wheel 130 and a second gear driven wheel 131, the third gear assembly includes a third gear driving wheel 132 and a third gear driven wheel 133, the fourth gear assembly includes a fourth gear driving wheel 134 and a fourth gear driven wheel 135, the fifth gear assembly includes a fifth gear driving wheel 136 and a fifth gear driven wheel 137, the sixth gear assembly includes a sixth gear driving wheel 138 and a sixth gear driven wheel 139, the seventh gear assembly includes a seventh gear driving wheel 140 and a seventh gear driven wheel 141, and the eighth gear assembly includes an eighth gear driving wheel 142 and an eighth gear driven wheel 143.

[0047] Meanwhile, the driving wheels of the first gear assembly, the third gear assembly, the fifth gear assembly and the seventh gear assembly are sleeved on the outer side of the outer input shaft 115, that is, the first gear driving wheel 128, the third gear driving wheel 132, the fifth gear driving wheel 136 and the seventh gear driving wheel 140 are all sleeved on the outer side of the outer input shaft 115, and are integrally connected or fixedly connected to the outer input shaft 115. The driven wheels of the first gear assembly, the third gear assembly, the fifth gear assembly and the seventh gear assembly are sleeved on the outer side of the intermediate shaft 117, that is, the third gear driven wheel 133, the fifth gear driven wheel 137 and the seventh gear driven wheel 141 are sleeved on the outer side of the intermediate shaft 117, and can rotate freely around the intermediate shaft 117.

[0048] Similarly, the driving wheels of the second gear assembly and the fourth gear assembly are sleeved on the outer side of the inner input shaft 113, that is, the second gear driving wheel 130 and the fourth gear driving wheel 134 are sleeved on the outer side of the inner input shaft 113, and are integrally connected to or fixedly connected to the inner input shaft 113. The driven wheel of the eighth gear assembly is sleeved on the outer side of the inner input shaft 113, that is, the eighth gear driven wheel 143 is sleeved on the outer side of the inner input shaft 113, and can rotate relative to the inner input shaft 113. The output shaft assembly 119 is connected to the sixth gear driven wheel 139, that is, the output shaft assembly 119 is integrally connected to or fixedly connected to the sixth gear driven wheel 139, so as to rotate under the drive of the sixth gear driving wheel 138, thereby realizing the output of the power of the sixth gear and other gears. At the same time, the driven wheels of the second gear assembly and the fourth gear assembly are sleeved on the outer side of the intermediate shaft 117, and the driving wheels of the sixth gear assembly and the eighth gear assembly are sleeved on the outer side of the intermediate shaft 117, that is, the second gear driven wheel 131 and the fourth gear driven wheel 135 are sleeved on the outer side of the intermediate shaft 117, and the sixth gear driving wheel 138 and the eighth gear driving wheel 142 are integrally connected or fixedly connected with the intermediate shaft 117. Through the above arrangement, when the sixth gear is selected, the sixth gear driven wheel 139 can be directly driven to rotate through the inner input shaft 113, and then the power can be directly output to the output shaft assembly 119. When other gears are selected, the power outputted by the output shaft of the motor 101 can be transmitted to the sixth gear driven wheel 139 through the inner input shaft 113 or the outer input shaft 115 through the intermediate shaft 117, so that the power can be outputted to the output shaft assembly 119 through the sixth gear driven wheel 139, so that the power can be outputted, and the overall structure is more compact and reliable.

[0049] Please refer again Figure 1In this embodiment, the intermediate shaft 117 is further provided with a first synchronizer 144, a second synchronizer 145 and a third synchronizer 146. The first synchronizer 144 is located between the first gear assembly and the third gear assembly, and is used to selectively engage with the first gear driven wheel 129 or the third gear driven wheel 133, so that when the first gear or the third gear is selected, the first synchronizer 144 can be correspondingly engaged with the first gear driven wheel 129 or the third gear driven wheel 133, so that the power is output to the output shaft assembly 119 through the intermediate shaft 117. Similarly, the second synchronizer 145 is provided between the seventh gear assembly and the fifth gear assembly, and is used to selectively engage with the seventh gear driven wheel 141 or the fifth gear driven wheel 137, so that when the seventh gear or the fifth gear is selected, the second synchronizer 145 can be correspondingly engaged with the seventh gear driven wheel 141 or the fifth gear driven wheel 137, so that the power is output to the output shaft assembly 119 through the intermediate shaft 117. The third synchronizer 146 is located between the second gear assembly and the fourth gear assembly, and is used to selectively engage with the second gear driven wheel 131 or the fourth gear driven wheel 135, so that when the second gear or the fourth gear is selected, the third synchronizer 146 can be correspondingly engaged with the second gear driven wheel 131 or the fourth gear driven wheel 135, thereby facilitating the output of power to the output shaft assembly 119 through the intermediate shaft 117, so as to facilitate the output of power.

[0050] As an optional solution, a fourth synchronizer 147 is also provided on the inner input shaft 113, and the fourth synchronizer 147 is located between the eight-gear assembly and the six-gear assembly, and is used to selectively engage with the eight-gear driven wheel 143 or the six-gear driven wheel 139, so that when the eighth gear or the sixth gear is selected, the fourth synchronizer 147 can be correspondingly engaged with the eight-gear driven wheel 143 or the six-gear driven wheel 139, thereby facilitating the output of power to the output shaft assembly 119 through the intermediate shaft 117.

[0051] It should be noted that the first synchronizer 144, the second synchronizer 145, the third synchronizer 146 and the intermediate shaft 117 can be rigidly connected via splines, and the fourth synchronizer 147 is also rigidly connected to the inner input shaft 113 via splines. In other embodiments, other structures can also be used for connection, which is not limited in this embodiment.

[0052] Please refer again Figure 1 In this embodiment, the reverse gear assembly includes a reverse gear driven wheel 151 , a reverse gear idler wheel 150 and a reverse gear synchronizer 156 .

[0053] In detail, the reverse gear shaft 149 is arranged parallel to the intermediate shaft 117, the inner input shaft 113 and the outer input shaft 115. The reverse gear idler wheel 150 is sleeved on the outer side of the reverse gear shaft 149 and meshes with the sixth gear driven wheel 139 for transmission. The reverse gear driven wheel 151 is sleeved on the outer side of the reverse gear shaft 149 through a bearing and meshes with the second gear driven wheel 131 for transmission and can rotate freely. The reverse gear synchronizer 156 is arranged on the reverse gear shaft 149 and is rigidly connected to the reverse gear shaft 149 through a spline, and is used to separate or engage with the reverse gear driven wheel 151, so that when engaging with the reverse gear driven wheel 151, the power transmitted from the second gear driven wheel 131 to the reverse gear driven wheel 151 is transmitted to the reverse gear idler wheel 150 through the reverse gear shaft 149, and then the power is transmitted to the output shaft assembly 119 after passing through the sixth gear driven wheel 139, so as to output the power of the reverse gear.

[0054] That is, through the meshing transmission between the second gear driven wheel 131 and the reverse gear driven wheel 151, and the meshing transmission between the reverse gear idler wheel 150 and the sixth gear driven wheel 139, the reverse gear operation of the transmission power transmission device 100 can be completed through the original gear structure of the second gear assembly and the sixth gear assembly, without adding other gear pairs, thereby making the overall number of gear pairs smaller and the structure more compact, thereby simplifying the structure of the transmission, making the structure of the transmission power transmission device 100 easier to process, and facilitating the control of the longitudinal dimension of the transmission, making the spatial layout more compact and reliable.

[0055] At the same time, it should be noted that the second gear driven wheel 131 is meshed with the reverse gear driven wheel 151 for transmission, so that the entire second gear assembly can form a double gear pair, thereby ensuring the reliability and compactness of its structure. The sixth gear driven wheel 139 is meshed with the reverse gear idler wheel 150, so that the sixth gear driven wheel 139 can be used as the output gear of the reverse gear, thereby further saving the setting of the gear pair. That is, through the above setting, the power transmission mechanism 111 includes 7 pairs of gear pairs, 1 double gear pair, and 5 synchronizers, which can achieve a smaller overall size of the transmission, better reliability, lower cost, and stronger power without changing the traditional driving habits.

[0056] Please refer again Figure 1 In this embodiment, in order to ensure the structural stability and safety of the transmission power transmission device 100, in this embodiment, the transmission power transmission device 100 also includes a box body, and the power transmission mechanism 111 is arranged in the box body.

[0057] In detail, the housing includes a front housing 152 and a rear housing 153 which are arranged relative to each other and at intervals. The motor 101 is arranged outside the housing and adjacent to the front housing 152. In addition, a first gear assembly is arranged near the front housing 152 so as to be arranged near the bearing of the mounting shaft, thereby reducing the deformation of the shaft and being more conducive to the overall reliability and rigidity. At the same time, the output shaft assembly 119 is arranged near the rear housing 153, and the inner input shaft 113, the outer input shaft 115 and the intermediate shaft 117 are longitudinally extended in the direction from the front housing 152 to the rear housing 153, and the outer input shaft 115 is sleeved on the outer side of the inner input shaft 113, and the two ends of the inner input shaft 113 and the intermediate shaft 117 are respectively supported by bearings on the front housing 152 and the rear housing 153, and can rotate freely to ensure the rigidity of the inner input shaft 113, the outer input shaft 115 and the intermediate shaft 117 and the overall reliability and stability.

[0058] As an optional solution, a center link plate 154 is also provided in the housing, and the center link plate 154 is arranged between the front housing 152 and the rear housing 153, and is arranged parallel to the front housing 152 and the rear housing 153. The inner input shaft 113 and the intermediate shaft 117 are also supported on the center link plate 154, and the two ends of the reverse gear shaft 149 of the reverse gear assembly are supported and arranged on the center link plate 154 and the rear housing 153. In the direction from the front housing 152 to the center link plate 154, the first gear assembly, the third gear assembly, the seventh gear assembly, and the fifth gear assembly are arranged in sequence; in the direction from the center link plate 154 to the rear housing 153, the second gear assembly, the fourth gear assembly, the eighth gear assembly, and the sixth gear assembly are arranged in sequence, and the second gear assembly is arranged adjacent to the center link plate 154. So that the first gear assembly and the second gear assembly of the low-speed gear are both located at one end close to the bearing, so that the deformation of the shaft can be reduced, which is more conducive to the overall reliability and NVH performance.

[0059] Please refer again Figure 1 In this embodiment, both ends of the intermediate shaft 117 are supported by the front housing 152 and the rear housing 153 through bearings, and a parking ratchet 155 is provided at the position where the intermediate shaft 117 extends out of the rear housing 153. The parking ratchet 155 is sleeved on the outer side of the intermediate shaft 117 and is rigidly connected to the intermediate shaft 117, so that when parking operation is required, the parking ratchet 155 can be used to drive the intermediate shaft 117 to stop power output, thereby ensuring that the output shaft assembly 119 does not output power, thereby completing the parking operation and ensuring that various operations are carried out in an orderly manner.

[0060] This embodiment also provides a car, which includes the above-mentioned transmission power transmission device 100, an engine and a differential. The output end of the engine is engaged or disengaged with the first clutch 103 integrated on the rotor of the motor 101, and the differential is connected and matched with the output shaft assembly 119 of the transmission power transmission device 100. Since it includes the above-mentioned transmission power transmission device 100, it also has the advantages of compact structure, small size, low cost and sufficient power.

[0061] The gear selection and power output process of the transmission power transmission device 100 of the present invention are described in detail below:

[0062] When the first gear is selected, the first gear power transmission route is: the output shaft of the motor 101 engages with the third clutch 109 of the dual clutch 105, and outputs power to the outer input shaft 115, the outer input shaft 115 transmits power to the first gear driving wheel 128, and then transmits power to the first gear driven wheel 129 meshing with the first gear driving wheel 128, at this time, the first synchronizer 144 engages with the first gear driven wheel 129, transmits power to the intermediate shaft 117, and then transmits power to the sixth gear driving wheel 138 through the intermediate shaft 117, and then drives the sixth gear driven wheel 139 meshing therewith to rotate, and then drives the output shaft assembly 119 fixedly connected to the sixth gear driven wheel 139 to output power.

[0063] When the second gear is selected, the second gear power transmission route is: the output shaft of the motor 101 is engaged with the second clutch 107 of the dual clutch 105, and the power is output to the inner input shaft 113, the inner input shaft 113 transmits the power to the second gear driving wheel 130, and then transmits the power to the second gear driven wheel 131 meshed with the second gear driving wheel 130, at this time, the third synchronizer 146 is engaged with the second gear driven wheel 131, and transmits the power to the intermediate shaft 117, and then transmits the power to the sixth gear driving wheel 138 through the intermediate shaft 117, and then drives the sixth gear driven wheel 139 meshed with it to rotate, and then drives the output shaft assembly 119 fixedly connected to the sixth gear driven wheel 139 to output power.

[0064] When the third gear is selected, the third gear power transmission route is: the output shaft of the motor 101 is engaged with the third clutch 109 of the dual clutch 105, and the power is output to the outer input shaft 115, the outer input shaft 115 transmits the power to the third gear driving wheel 132, and then transmits the power to the third gear driven wheel 133 meshing with the third gear driving wheel 132, at this time, the second synchronizer 145 is engaged with the third gear driven wheel 133, and transmits the power to the intermediate shaft 117, and then transmits the power to the sixth gear driving wheel 138 through the intermediate shaft 117, and then drives the sixth gear driven wheel 139 meshing therewith to rotate, and then drives the output shaft assembly 119 fixedly connected to the sixth gear driven wheel 139 to output power.

[0065] When the fourth gear is selected, the fourth gear power transmission route is: the output shaft of the motor 101 is engaged with the second clutch 107 of the dual clutch 105, and the power is output to the inner input shaft 113, the inner input shaft 113 transmits the power to the fourth gear driving wheel 134, and then transmits the power to the fourth gear driven wheel 135 meshing with the fourth gear driving wheel 134, at this time, the third synchronizer 146 is engaged with the fourth gear driven wheel 135, and transmits the power to the intermediate shaft 117, and then transmits the power to the sixth gear driving wheel 138 through the intermediate shaft 117, and then drives the sixth gear driven wheel 139 meshing therewith to rotate, and then drives the output shaft assembly 119 fixedly connected to the sixth gear driven wheel 139 to output power.

[0066] When the fifth gear is selected, the fifth gear power transmission route is: the output shaft of the motor 101 is engaged with the third clutch 109 of the dual clutch 105, and the power is output to the outer input shaft 115, the outer input shaft 115 transmits the power to the fifth gear driving wheel 136, and then transmits the power to the fifth gear driven wheel 137 meshing with the fifth gear driving wheel 136, at this time, the second synchronizer 145 is engaged with the fifth gear driven wheel 137, and transmits the power to the intermediate shaft 117, and then transmits the power to the sixth gear driving wheel 138 through the intermediate shaft 117, and then drives the sixth gear driven wheel 139 meshing therewith to rotate, and then drives the output shaft assembly 119 fixedly connected to the sixth gear driven wheel 139 to output power.

[0067] When the sixth gear is selected, the sixth gear power transmission route is: the output shaft of the motor 101 engages with the second clutch 107 of the dual clutch 105, and outputs power to the inner input shaft 113. At this time, the fourth synchronizer 147 engages with the sixth gear driven wheel 139, driving the sixth gear driven wheel 139 to rotate, and then drives the output shaft assembly 119 fixedly connected to the sixth gear driven wheel 139 to output power.

[0068] When the seventh gear is selected, the seventh gear power transmission route is: the output shaft of the motor 101 is engaged with the third clutch 109 of the dual clutch 105, and the power is output to the outer input shaft 115, the outer input shaft 115 transmits the power to the fifth gear driving wheel 136, and then transmits the power to the seventh gear driven wheel 141 meshing with the seventh gear driving wheel 140, at this time, the second synchronizer 145 is engaged with the seventh gear driven wheel 141, and transmits the power to the intermediate shaft 117, and then transmits the power to the sixth gear driving wheel 138 through the intermediate shaft 117, and then drives the sixth gear driven wheel 139 meshing therewith to rotate, and then drives the output shaft assembly 119 fixedly connected to the sixth gear driven wheel 139 to output power.

[0069] When the eighth gear is selected, the eighth gear power transmission route is: the output shaft of the motor 101 is engaged with the second clutch 107 of the dual clutch 105, and the power is output to the inner input shaft 113. At this time, the fourth synchronizer 147 is engaged with the eighth gear driven wheel 143 to drive the eighth gear driven wheel 143 to rotate, and then drive the eighth gear driving wheel 142 meshing with the eighth gear driven wheel 143 to rotate, and then drive the intermediate shaft 117 to rotate, and transmit the power to the intermediate shaft 117, and then transmit the power to the sixth gear driving wheel 138 through the intermediate shaft 117, so that the output shaft assembly 119 fixedly connected to the sixth gear driven wheel 139 outputs the power.

[0070] When the reverse gear is selected, the reverse gear power transmission route is: the output shaft of the motor 101 is engaged with the second clutch 107 of the dual clutch 105, and the power is output to the inner input shaft 113, and the inner input shaft 113 transmits the power to the second gear driving wheel 130, and then transmits the power to the second gear driven wheel 131 meshed with the second gear driving wheel 130, at this time, the second gear driven wheel 131 drives the reverse gear driven wheel 151 meshed with it to rotate, and at this time the reverse gear synchronizer 156 is engaged with the reverse gear driven wheel 151, driving the reverse gear shaft 149 to rotate, and transmitting the power to the reverse gear idler wheel 150, and then through the reverse gear idler wheel 150, the power is transmitted to the output shaft assembly 119 through the sixth gear driven wheel 139 to output the power.

[0071] In the above process, the transmission power transmission device 100 is a longitudinal transmission, which integrates the first clutch 103 inside the motor 101, and can realize the engagement or disengagement of the motor 101 and the engine output end, so as to facilitate the switching of the motor 101 and the engine mode. At the same time, the output end of the motor 101 is connected to the inner input shaft 113 and the outer input shaft 115 respectively through the second clutch 107 and the third clutch 109, and through 7 pairs of gear pairs, 1 double gear pair, and 5 synchronizers, it can realize the power output of each gear without changing the traditional driving habits, and make the overall size of the transmission smaller, more compact, more reliable, lower cost, and more powerful.

[0072] In summary, the embodiment of the present invention provides a longitudinal transmission power transmission device 100, which has a compact structure, a small overall size, a low cost, a stronger power, and a better fuel economy. The embodiment of the present invention also provides an automobile, which includes the above-mentioned transmission power transmission device 100, and thus also has the advantages of compact structure, small size, low cost and sufficient power.

[0073] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A transmission power transmission device, characterized in that: include: A motor, a rotor of which is integrated with a first clutch, and the first clutch is used to separate from or engage with an output end of the engine; A dual clutch, comprising a second clutch and a third clutch coaxially arranged with the first clutch, and the second clutch and the third clutch are both selectively disengaged from or engaged with the output shaft of the motor; A power transmission mechanism, comprising an inner input shaft, an outer input shaft, a power transmission assembly and an output shaft assembly, wherein the inner input shaft is separated from or engaged with the second clutch, the outer input shaft is separated from or engaged with the third clutch, the outer input shaft is loosely sleeved outside the inner input shaft, the output shaft assembly is coaxially arranged with the inner input shaft and the outer input shaft, and the power transmission assembly is engaged with the inner input shaft or the outer input shaft to transmit power inputted from the inner input shaft or the outer input shaft to the output shaft assembly; The power transmission assembly includes eight forward gear assemblies, an intermediate shaft, a reverse gear shaft and a reverse gear assembly; the intermediate shaft and the reverse gear shaft are parallel to the inner input shaft and the outer input shaft and are arranged at intervals; The eight forward gear assemblies are respectively a first gear assembly, a second gear assembly, a third gear assembly, a fourth gear assembly, a fifth gear assembly, a sixth gear assembly, a seventh gear assembly and an eighth gear assembly, and the sixth gear assembly is fixedly connected to the output shaft assembly, so that the sixth gear assembly directly transmits power to the output shaft assembly through the inner input shaft; the first gear assembly, the third gear assembly, the fifth gear assembly and the seventh gear assembly sequentially transmit power to the output shaft assembly after passing through the outer input shaft, the intermediate shaft and the sixth gear assembly, so that the power is transmitted to the intermediate shaft through the outer input shaft, and then transmitted to the output shaft assembly through the sixth gear assembly, so that the third clutch control The first gear assembly, the third gear assembly, the fifth gear assembly and the seventh gear assembly are controlled, and the power of the corresponding gear is output through the sixth gear assembly; the second gear assembly, the fourth gear assembly and the eighth gear assembly are sequentially transmitted to the output shaft assembly through the inner input shaft, the intermediate shaft and the sixth gear assembly, so that the second clutch controls the second gear assembly, the fourth gear assembly, the sixth gear assembly and the eighth gear assembly; the reverse gear assembly is arranged on the reverse gear shaft and is engaged with the second gear assembly, and the power is sequentially transmitted to the output shaft assembly through the inner input shaft, the second gear assembly, the reverse gear shaft and the sixth gear assembly.

2. The transmission power transmission device according to claim 1, characterized in that: The first gear assembly, the second gear assembly, the third gear assembly, the fourth gear assembly, the fifth gear assembly, the sixth gear assembly, the seventh gear assembly and the eighth gear assembly all include a driving wheel and a driven wheel of meshing transmission; The driving wheels of the first gear assembly, the third gear assembly, the fifth gear assembly and the seventh gear assembly are sleeved on the outside of the outer input shaft, and the driven wheels of the first gear assembly, the third gear assembly, the fifth gear assembly and the seventh gear assembly are sleeved on the outside of the intermediate shaft; The driving wheels of the second gear assembly and the fourth gear assembly are sleeved on the outer side of the inner input shaft, the driven wheel of the eighth gear assembly is sleeved on the outer side of the inner input shaft, and the driven wheel of the sixth gear assembly is fixedly connected to the output shaft assembly; the driven wheels of the second gear assembly and the fourth gear assembly are sleeved on the outer side of the intermediate shaft, and the driving wheels of the sixth gear assembly and the eighth gear assembly are sleeved on the outer side of the intermediate shaft.

3. The transmission power transmission device according to claim 2, characterized in that: The reverse gear assembly comprises a reverse gear driven wheel, a reverse gear idler wheel and a reverse gear synchronizer; The reverse idler gear is sleeved on the outer side of the reverse shaft and meshes with the driven wheel of the six-speed assembly for transmission; the reverse driven wheel is sleeved on the outer side of the reverse shaft and meshes with the driven wheel of the second gear assembly for transmission; the reverse synchronizer is arranged on the reverse shaft and is used to separate from or engage with the reverse driven wheel, so that when engaging with the reverse driven wheel, the power transmitted from the driven wheel of the second gear assembly to the reverse driven wheel is transmitted to the reverse idler gear through the reverse shaft, so as to continue to directly transmit the power to the output shaft assembly through the driven wheel of the six-speed assembly.

4. The transmission power transmission device according to claim 2, characterized in that: The intermediate shaft is also provided with a first synchronizer, a second synchronizer and a third synchronizer; The first synchronizer is located between the first gear assembly and the third gear assembly, and is used to selectively engage with or disengage from the driven wheel of the first gear assembly or the driven wheel of the third gear assembly; the second synchronizer is arranged between the seventh gear assembly and the fifth gear assembly, and is used to selectively engage with the driven wheel of the seventh gear assembly or the driven wheel of the fifth gear assembly; the third synchronizer is located between the second gear assembly and the fourth gear assembly, and is used to selectively engage with the driven wheel of the second gear assembly or the driven wheel of the fourth gear assembly.

5. The transmission power transmission device according to claim 2, characterized in that: A fourth synchronizer is also provided on the inner input shaft, and the fourth synchronizer is located between the eight-speed assembly and the six-speed assembly, and is used for selectively engaging with the driven wheel of the eight-speed assembly or the driven wheel of the six-speed assembly.

6. The transmission power transmission device according to any one of claims 1 to 5, characterized in that: The transmission power transmission device also includes a housing, and the power transmission mechanism is arranged in the housing; the housing includes a front housing and a rear housing that are relatively and spaced apart; the motor is arranged outside the housing and adjacent to the front housing; the first gear assembly is arranged close to the front housing; the output shaft assembly is arranged close to the rear housing; the inner input shaft, the outer input shaft and the intermediate shaft are all arranged to extend longitudinally in the direction from the front housing to the rear housing; and the outer input shaft is loosely sleeved on the outside of the inner input shaft and supported by the front housing; the two ends of the inner input shaft and the intermediate shaft are respectively supported by the front housing and the rear housing.

7. The transmission power transmission device according to claim 6, characterized in that: A center connecting plate is also provided in the housing, and the center connecting plate is arranged between the front housing and the rear housing, and is arranged parallel to the front housing and the rear housing; the inner input shaft and the intermediate shaft are also supported by the center connecting plate, and both ends of the reverse gear shaft are supported by the center connecting plate and the rear housing; And along the direction from the front box body to the center connecting plate, the first gear assembly, the third gear assembly, the seventh gear assembly, and the fifth gear assembly are arranged in sequence; in the direction from the center connecting plate to the rear box body, the second gear assembly, the fourth gear assembly, the eighth gear assembly, and the sixth gear assembly are arranged in sequence, and the second gear assembly is arranged adjacent to the center connecting plate.

8. The transmission power transmission device according to claim 7, characterized in that: Both ends of the intermediate shaft are supported on the front housing and the rear housing through bearings, and a parking ratchet is provided at the position where the intermediate shaft extends out of the rear housing. The parking ratchet is sleeved on the outer side of the intermediate shaft and rigidly connected to the intermediate shaft.

9. A car, characterized in that: include: The transmission power transmission device, engine and differential according to any one of claims 1 to 8, wherein the output end of the engine is engaged or disengaged with the first clutch integrated on the rotor of the motor, and the differential is connected and engaged with the output shaft assembly of the transmission power transmission device.

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