Supporting assembly, transmission device, power assembly and vehicle

Abstract

The utility model provides a supporting assembly, a transmission device, a power assembly and a vehicle. The supporting assembly comprises an annular supporting piece and a pressing piece, the pressing piece is used for being fixedly contained in the mounting hole, the pressing piece comprises a first part and a second part suitable for being fixed to the inner wall of the mounting hole, the first part abuts against the annular supporting piece in the axial direction of the annular supporting piece, and the second part is arranged on the radial outer wall of the annular supporting piece. As the annular supporting piece is not limited by a clamping spring, a clamping groove does not need to be formed in the mounting hole, and a bolt is not needed to fix the pressing piece, the structures of the shell and the transmission device are simplified, and the assembling step of assembling the annular supporting piece in the mounting hole is also simplified.

Description

Technical Field

[0001] The present application relates to the field of transmission technology, and in particular to a support assembly, a transmission device, a powertrain and a vehicle. Background Art

[0002] In a commonly used bearing fixing technology, a slot is provided on the inner wall of the mounting hole of the housing, and a retaining spring is placed in the slot. The retaining spring is made of elastic material and is used to provide a clamping force to the annular support member placed in the mounting hole of the gearbox. The retaining spring needs to be fastened with bolts, and there are more parts, and a slot needs to be provided, and there are many processing and production steps. Utility Model Content

[0003] The present application provides a support assembly, a transmission device, a powertrain and a vehicle that are conducive to simplifying the structure.

[0004] In a first aspect, an embodiment of the present application provides a support assembly, which includes an annular support member and a pressing member, wherein the pressing member is used to be fixedly accommodated in a mounting hole, and the pressing member includes a first part and a second part suitable for being fixed on the inner wall of the mounting hole, the first part and the annular support member are axially abutted against each other, and the second part is arranged on the radial outer wall of the annular support member.

[0005] According to the first aspect, in a possible implementation of the present application, the annular support member is a bearing, and the annular support member includes an inner ring and an outer ring. The first part is abutted against the outer wall of the annular support member in the axial direction of the annular support member, and the second part is annular, and the second part is sleeved on the radial outer wall of the outer ring. The press-fit part also includes a through hole provided in the first part, and the aperture of the through hole is larger than the outer diameter of the inner ring.

[0006] According to the first aspect, in a possible implementation of the present application, the pressing piece further includes a notch, and the notch is provided in at least one of the first part and the second part.

[0007] According to the first aspect, in a possible implementation of the present application, the pressing part also includes a snap-fit ​​part, the notch includes a first side wall and a second side wall relatively arranged along the circumference of the annular support part, a snap-fit ​​hole is provided on the first side wall, the snap-fit ​​part is protruded on the second side wall, and the snap-fit ​​part is used to snap into the snap-fit ​​hole.

[0008] According to the first aspect, in a possible implementation of the present application, when the snap member is engaged in the snap hole, the first side wall is in contact with the second side wall.

[0009] According to the first aspect, in a possible implementation of the present application, the notch penetrates the hole wall of the through hole.

[0010] According to the first aspect, in a possible implementation of the present application, the first part is an annular structure, the second part is protruding from the periphery of the first part and is arranged around the first part, the first part and the second part form a receiving groove, and the annular support member is accommodated in the receiving groove.

[0011] According to the first aspect, in a possible implementation of the present application, an external thread is provided on an outer wall of the second portion facing away from the accommodating groove, and the external thread is used to be threadedly connected with an internal thread on an inner wall of the mounting hole.

[0012] In a second aspect, an embodiment of the present application further provides a transmission device, comprising a housing and the support assembly described in the first aspect, wherein the housing is provided with a mounting hole, the pressing part of the support assembly is fixedly received in the mounting hole, and the second part is located between the inner wall of the mounting hole and the outer ring.

[0013] According to the second aspect, in a possible implementation of the present application, the shell has an inner cavity, an annular support seat is protruding from the inner wall of the inner cavity, and the mounting hole passes through the annular support seat.

[0014] According to a second aspect, the transmission device comprises a transmission.

[0015] In a third aspect, an embodiment of the present application further provides a power assembly, which includes the transmission device according to the second aspect.

[0016] In a fourth aspect, an embodiment of the present application further provides a vehicle, comprising the support assembly according to the third aspect.

[0017] In the support assembly, transmission device, powertrain and vehicle provided by the present application, the press-fitting part is used to be fixedly received in the mounting hole, and the annular support part is fixed to the mounting hole by the press-fitting part. Since the retaining spring is not used to limit the annular support part, there is no need to set a slot on the mounting hole, and there is no need to fix the press-fitting part with bolts, which simplifies the structure of the housing and the transmission device, and also simplifies the assembly steps of the annular support part to the mounting hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments are briefly introduced below.

[0019] Figure 1 is a schematic diagram of a vehicle provided in one embodiment of the present application;

[0020] Figure 2 is a three-dimensional exploded schematic diagram of a partial structure of a powertrain provided in an embodiment of the present application;

[0021] Figure 3 is a three-dimensional schematic diagram of a pressing piece provided in an embodiment of the present application;

[0022] Figure 4 yes Figure 3 A three-dimensional schematic diagram of the pressed part shown in another perspective;

[0023] Figure 5 is a three-dimensional exploded schematic diagram of a partial structure of a powertrain provided in an embodiment of the present application;

[0024] Figure 6 is a three-dimensional schematic diagram of a partial structure of a powertrain provided in one embodiment of the present application;

[0025] Figure 7 is a three-dimensional schematic diagram of a pressing piece provided in an embodiment of the present application;

[0026] Figure 8 yes Figure 7 A three-dimensional schematic diagram of the pressed part shown in another perspective;

[0027] Fig. 9 yes Figure 8 An enlarged schematic diagram of local area I is shown.

[0028] Description of reference numerals:

[0029] Vehicle-1; powertrain-10; vehicle body-20; battery pack-30; wheel-40; housing-12; support assembly-14; mounting seat-122; mounting hole-1222; annular support member-142; pressing member-146; groove-147; inner ring-1422; outer ring-1424; first part-1462; second part-1464; accommodating groove-1465; through hole-1466; notch-1467; snap member-1468; first side wall-1469; second side wall-1470; snap hole-1471. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] The following descriptions of the various embodiments are made with reference to the attached drawings to illustrate specific embodiments that may be implemented in the present application. Directional terms mentioned herein, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are intended to better and more clearly describe and understand the present application, rather than to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In addition, the serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0033] See also Figure 1 The present application provides a vehicle 1, which includes a powertrain 10, a vehicle body 20, a battery pack 30, and wheels 40. The powertrain 10 and the battery pack 30 are fixed to the vehicle body 20. The powertrain 10 is used to receive power from the battery pack 30 and to drive the wheels 40.

[0034] In the embodiment of the present application, the battery pack 30 may also be referred to as a power battery.

[0035] In the embodiment of the present application, the vehicle 1 may be a wheeled device driven or towed by a power device. Exemplarily, the vehicle 1 includes an electric vehicle (EV), a battery electric vehicle (BEV), a hybrid electric vehicle (HEV), a range extended electric vehicle (REEV), a plug-in hybrid electric vehicle (PHEV), etc.

[0036] The powertrain 10 is the power source of the vehicle. The powertrain 10 includes a motor and a transmission device. The motor and the transmission device are both contained in a housing 12. The transmission device includes a transmission. The motor is used to receive a wheel 40 for driving the vehicle 1. The transmission device is used to transmit the power of the motor to the wheel 40.

[0037] See also Figure 2The transmission device further includes a housing 12 and a support assembly 14. It can be understood that the housing 12 can be a transmission housing or a motor housing, and the housing 12 can also be an integrated housing. When the housing 12 is an integrated housing, the motor and the transmission are both accommodated in the housing 12. A mounting seat 122 is convexly provided on the inner wall of the housing 12 for carrying the support assembly 14. The mounting seat 122 is provided with a mounting hole 1222, and the mounting hole 1222 is used to accommodate the support assembly 14.

[0038] The support assembly 14 includes an annular support member 142 and a pressing member 146. The annular support member 142 may be a bearing or a bushing. The annular support member 142 is used to be sleeved on the input shaft of the transmission shaft to support the input shaft of the transmission. The annular support member 142 is accommodated in the pressing member 146. The pressing member 146 is used to be fixedly accommodated in the mounting hole 1222, and the pressing member 146 is used to fix the annular support member 142 on the housing 12.

[0039] Please refer to Figure 2 , Figure 3 and Figure 4 The press-fitting member 146 includes a first portion 1462 and a second portion 1464 which is adapted to be fixed on the inner wall of the mounting hole 1222 . The first portion 1462 abuts against the annular support member 142 in the axial direction of the annular support member 142 . The second portion 1464 is disposed on the radial outer wall of the annular support member 142 .

[0040] The support assembly 14 provided in the present application, the press-fitting piece 146 is used to be fixedly received in the mounting hole 1222, and the annular support member 142 is fixed to the mounting hole 1222 by the press-fitting piece 146. Since the retaining spring is not used to limit the annular support member 142, there is no need to set a slot on the mounting hole 1222, and there is no need to fix the press-fitting piece 146 with bolts, which simplifies the structure of the housing 12 and the transmission device, and also simplifies the assembly steps of the annular support member 142 to the mounting hole 1222.

[0041] The present application does not limit the application of the support assembly 14 to a transmission device; the support assembly 14 may also be applied to other occasions where bearings or bushings need to be fixedly installed.

[0042] In some embodiments of the present application, the annular support member 142 is a bearing, and the annular support member 142 includes an inner ring 1422 and an outer ring 1424, and the outer ring 1424 is rotatably sleeved outside the inner ring 1422. The inner ring 1422 is used to be sleeved on the input shaft of the transmission. It can be understood that the annular support member 142 can also be sleeved on the motor.

[0043] The first portion 1462 abuts against the outer wall of the annular support member 142 in the axial direction of the annular support member 142. The second portion 1464 is annular, and the second portion 1464 is sleeved on the radial outer wall of the outer ring 1424. In this embodiment, the first portion 1462 abuts against the outer ring 1424 in the axial direction of the annular support member 142. The second portion 1464 is located between the inner wall of the mounting hole 1222 and the outer ring 1424, and the second portion 1464 abuts against the outer wall of the outer ring 1424 in the radial direction of the annular support member 142.

[0044] The press-fitting member 146 is fixedly received in the mounting hole 1222. The first portion 1462 abuts against the outer ring 1424 in the axial direction of the annular support member 142, and the first portion 1462 limits the annular support member 142 in the axial direction of the annular support member 142, thereby limiting the displacement of the annular support member 142 in the axial direction. The second portion 1464 is located between the inner wall of the mounting hole 1222 and the outer ring 1424, and the second portion 1464 abuts against the outer wall of the outer ring 1424 in the radial direction of the annular support member 142, and the second portion 1464 limits the annular support member 142 in the axial direction of the annular support member 142, thereby limiting the displacement of the annular support member 142 in the radial direction. In this way, the contact area between the pressing piece 146 and the annular support piece 142 is increased, which is conducive to increasing the force application area of ​​the pressing piece 146 on the annular support piece 142, which is conducive to improving the connection strength and stability between the annular support piece 142 and the housing 12, reducing the possibility of failure of the annular support piece 142, thereby improving the reliability of the annular support piece 142. In addition, there is no need to set a card groove on the inner wall of the mounting hole 1222, which reduces the manufacturing process of the housing 12.

[0045] In some embodiments of the present application, the first portion 1462 of the press-fit piece 146 may be a roughly annular structure, and the press-fit piece 146 may be in the shape of a cap. The second portion 1464 is protruded from the first portion 1462 and is arranged around the periphery of the first portion 1462. The first portion 1462 and the second portion 1464 form a receiving groove 1465. The annular support piece 142 is received in the receiving groove 1465. The second portion 1464 may be vertically connected to the first portion 1461. Since the press-fit piece 146 is a full-circumferential buckle cover, the contact area between the press-fit piece 146 and the annular support piece 142 is further increased, which is further conducive to improving the connection strength and stability between the annular support piece 142 and the shell 12.

[0046] It can be understood that the shape of the press-fit 146 is not limited to an annular structure. The press-fit 146 can be fixed in the mounting hole 1222, and the first part 1462 of the press-fit 146 abuts against the outer ring 1424 in the axial direction of the annular support 142, and the second part 1464 of the press-fit 146 abuts against the outer wall of the outer ring 1424 in the radial direction of the annular support 142.

[0047] The press-fitting member 146 further includes a through hole 1466 provided in the first portion 1462, the aperture of the through hole 1466 being smaller than or equal to the outer diameter of the outer ring 1424, and the aperture of the through hole 1466 being larger than the outer diameter of the inner ring 1422, so as to reduce the interference of the first portion 1462 with the rotation of the inner ring 1422 relative to the outer ring 1424. The overlapping area of ​​the orthographic projection of the inner ring 1422 along the axial direction of the annular support member 142 and the orthographic projection of the first portion 1462 along the axial direction of the annular support member 142 is 0, so as to further reduce the interference of the first portion 1462 with the rotation of the inner ring 1422 relative to the outer ring 1424.

[0048] In some embodiments of the present application, the second portion 1464 can be interference fit with the inner wall of the mounting hole 1222 to fix the press-fit member 146 in the mounting hole 1222. In this way, the press-fit member 146 can be fixed on the mounting seat 122 as a whole, so that the press-fit member 146 can not only enhance its own strength, but also enhance the strength of the mounting seat 122.

[0049] When the annular support member 142 needs to be fixed to the housing 12, the press-fit member 146 is first sleeved on the annular support member 142, the first portion 1462 and the outer ring 1424 are abutted against each other in the axial direction of the annular support member 142, and the second portion 1464 is abutted against the outer wall of the outer ring 1424 in the radial direction of the annular support member 142. Then, the press-fit member 146 and the annular support member 142 are installed into the mounting hole 1222, the second portion 1464 is located between the inner wall of the mounting hole 1222 and the outer wall of the outer ring 1424, and the second portion 1464 is interference fit with the inner wall of the mounting hole 1222, so that the press-fit member 146 is fixed to the housing 12.

[0050] In some possible implementations, an outer wall of the second portion 1464 facing away from the receiving groove 1465 is provided with an outer thread, and an inner wall of the mounting hole 1222 is provided with an inner thread, and the inner thread is threadedly connected with the outer thread. The pressing piece 146 is fixed to the housing 12 through the threaded connection, which facilitates the assembly between the pressing piece 146 and the housing 12 while saving effort and improving the reliability of the support assembly 14.

[0051] In some possible implementations, such as Figure 5 and Figure 6 As shown, a groove 147 is further provided on a side of the second portion 1464 facing away from the accommodating cavity to facilitate cooperation with other components or structures of the powertrain.

[0052] For some possible implementations, see Figure 7 , Figure 8 and Fig. 9The pressing piece 146 can be elastically deformed. The pressing piece 146 is generally an open-loop structure. The pressing piece 146 also includes a notch 1467 and a buckle 1468. The notch 1467 is provided at the first portion 1462 and the second portion 1464. The notch 1467 passes through the hole wall of the through hole 1466. The side wall of the notch 1467 includes a first side wall 1469 and a second side wall 1470 which are oppositely arranged along the circumference of the pressing piece 146. The first side wall 1469 is provided with a buckle hole 1471. The buckle 1468 is convexly provided on the second side wall 1470. The buckle 1468 is used to be fixed in the buckle hole 1471. In some possible implementations, when the snap member 1468 is engaged in the snap hole 1471, the first side wall 1469 fits with the second side wall 1470, and the press-fit member 146 is converted from an open loop to a closed loop structure to improve the force balance of the outer ring of the annular support member 142 and extend the service life of the annular support member 142.

[0053] When the support assembly 14 needs to be installed into the mounting hole, the annular support member 142 can be installed into the mounting hole 1222 first, and then the pressing member 146 can be buckled onto the annular support member 142 from one end of the annular support member 142. When the pressing member 146 needs to be sleeved onto the annular support member 142, the buckle 1468 is separated from the buckle hole 1471. Since the pressing member 146 forms an open-loop structure, it is convenient to sleeve the pressing member 146 onto the annular support member 142. After the pressing member 146 is sleeved onto the annular support member 142, the buckle 1468 is snapped into the buckle hole 1471, and the second portion 1464 is tightly fitted with the outer ring 1424 in the radial direction of the annular support member 142, and the first portion 1462 is abutted against the outer ring 1424 in the axial direction of the annular support member 142. The press-fitting piece 146 is installed into the mounting hole 1222 , and the second portion 1464 is located between the inner wall of the mounting hole 1222 and the outer wall of the outer ring 1424 . The second portion 1464 abuts against the outer ring 1424 in the axial direction of the annular support 142 , thereby firmly fixing the annular support 142 on the housing 12 .

[0054] Since the pressing piece 146 is provided with a notch 1467, it is convenient to put the pressing piece 146 on the annular support piece 142. Since the pressing piece 146 is provided with a snap hole 1471 and a snap piece 1468, the assembly and disassembly between the pressing piece 146 and the annular support piece 142 are convenient.

[0055] In some possible implementations, the pressing piece 146 further includes a notch 1467 , which is disposed in at least one of the first portion 1462 and the second portion 1464 to increase the deformation capability of the pressing piece 146 and facilitate the pressing piece 146 to be mounted on the annular support piece 142 .

[0056] The above are some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A support assembly, characterized in that: The support assembly includes an annular support member and a pressing member, and the pressing member is used to be fixedly received in the mounting hole; The pressing piece includes a first part and a second part suitable for being fixed on the inner wall of the mounting hole, the first part abuts against the annular support piece in the axial direction of the annular support piece, and the second part is arranged on the radial outer wall of the annular support piece.

2. The support assembly according to claim 1, characterized in that: The annular support member is a bearing, and the annular support member includes an inner ring and an outer ring. The first part is in an annular shape and is sleeved on the radial outer wall of the outer ring. The press-fit part also includes a through hole provided in the first part, and the aperture of the through hole is larger than the outer diameter of the inner ring.

3. The support assembly according to claim 2, characterized in that: The pressing piece further includes a notch, and the notch is arranged in at least one of the first part and the second part.

4. The support assembly according to claim 3, characterized in that: The pressing part also includes a snap-fitting part, the notch includes a first side wall and a second side wall which are arranged opposite to each other along the circumference of the annular support part, a snap-fitting hole is provided on the first side wall, the snap-fitting part is protruded on the second side wall, and the snap-fitting part is used to snap into the snap-fitting hole.

5. The support assembly according to claim 4, characterized in that: When the buckle is engaged in the buckle hole, the first side wall is in contact with the second side wall.

6. The support assembly according to claim 4, characterized in that: The notch penetrates through the hole wall of the through hole.

7. The support assembly according to claim 2, characterized in that: The first part is an annular structure, the second part is protruding from the periphery of the first part and is arranged around the first part, the first part and the second part form a receiving groove, and the annular support member is received in the receiving groove.

8. The support assembly according to claim 7, characterized in that: An external thread is provided on the outer wall of the second part facing away from the accommodating groove, and the external thread is used for threading with the internal thread of the inner wall of the mounting hole.

9. A transmission device, characterized in that: The transmission device includes a shell and a support assembly according to any one of claims 1-8, the shell is provided with a mounting hole, the pressing part of the support assembly is fixedly accommodated in the mounting hole, and the second part is located between the inner wall of the mounting hole and the annular support member.

10. The transmission device according to claim 9, characterized in that: The shell has an inner cavity, an inner wall of the inner cavity is convexly provided with a mounting seat, and the mounting hole passes through the mounting seat.

11. The transmission device according to claim 9, characterized in that: The transmission device includes a transmission.

12. A powertrain, characterized in that: The powertrain comprises a transmission device according to any one of claims 9-11.

13. A vehicle, characterized in that: The vehicle includes the powertrain according to claim 12.

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