Motor assembly structure and rotating motor

Abstract

The utility model provides a motor assembly structure and a rotating motor, the motor assembly structure comprises a motor housing and an oil seal seat, the motor housing is internally provided with an accommodating cavity used for accommodating a motor stator, the bottom wall of the motor housing is provided with a first shaft hole and a first accommodating groove surrounding the periphery of the first shaft hole, a second shaft hole and a second containing groove surrounding the periphery of the second shaft hole are formed in the oil seal seat, the first shaft hole corresponds to the second shaft hole in position, the first containing groove and the second containing groove jointly form an oil cavity, a plurality of first fixing structures are arranged on the bottom wall of the motor shell, and a plurality of second fixing structures are arranged on the oil seal seat. The multiple first fixing structures and the multiple second fixing structures are in one-to-one correspondence in position and are connected with each other. According to the utility model, the plurality of first fixing structures are connected with the plurality of second fixing structures, so that the alignment precision between the motor shell and the oil seal seat can be ensured, the concentricity between the first shaft hole and the second shaft hole of the motor can be ensured, and the axis stability when the rotating shaft rotates can be further improved.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a motor assembly structure and a rotary motor including the motor assembly structure. Background Technology

[0002] An electric motor typically includes a stator assembly, a rotor assembly, a rotating shaft, and a housing. The rotor assembly is fitted onto the rotating shaft, and the stator assembly surrounds the rotor assembly and is fixedly connected to its inner wall. One end of the rotating shaft extends through the housing to connect to an external load. The housing is usually divided into two parts: an upper housing and a lower housing. The upper and lower housings are joined together to house the stator assembly and rotor assembly within the cavity they form. The upper and lower ends of the rotating shaft are movably connected to the upper and lower housings respectively via bearings.

[0003] To ensure the service life of components connecting the rotating shaft and the lower housing (such as oil seals), an oil filling chamber is typically provided at the bottom of the lower housing. Specifically, the lower housing has a downwardly recessed annular groove around the perimeter corresponding to the point where the rotating shaft passes through, and a lower bearing housing is fitted inside the lower housing. The outer surface of the lower bearing housing fits against the inner surface of the lower housing. One end of the rotating shaft passes through the lower bearing housing and the lower housing in sequence. The lower bearing housing is movably connected to the rotating shaft via a bearing. The lower bearing housing seals the top of the annular groove to form the oil filling chamber. Oil seals are provided between the rotating shaft, the lower bearing housing, and the lower housing to achieve dynamic sealing between the upper and lower holes of the oil filling chamber and the rotating shaft. A sealing ring is also provided between the lower bearing housing and the lower housing, surrounding the outside of the annular groove, to achieve static sealing outside the oil filling chamber. However, this design has problems such as poor alignment between the shaft hole on the lower bearing housing and the shaft hole on the lower housing, difficulty in installing the sealing ring, and short service life, resulting in poor overall concentricity and sealing performance of the motor.

[0004] Therefore, how to provide a motor assembly structure with high concentricity and good sealing has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, this utility model provides a motor assembly structure and a rotary motor including the motor assembly structure, which has high concentricity and good sealing performance.

[0006] To achieve the above objectives, as one aspect of this utility model, a motor assembly structure is provided, including a motor housing and an oil seal seat. The motor housing has an internal cavity for accommodating a motor stator. A first shaft hole and a first receiving groove surrounding the first shaft hole are formed on the bottom wall of the motor housing. A second shaft hole and a second receiving groove surrounding the second shaft hole are formed on the oil seal seat. The first shaft hole and the second shaft hole are positioned correspondingly. The first receiving groove and the second receiving groove together form an oil cavity. The bottom wall of the motor housing has a plurality of first fixing structures, and the oil seal seat has a plurality of second fixing structures. The plurality of first fixing structures and the plurality of second fixing structures are positioned one-to-one and interconnected.

[0007] Optionally, the positions of the plurality of first fixing structures and the plurality of second fixing structures are all distributed around the outside of the first receiving groove and the second receiving groove.

[0008] Optionally, the positions of the plurality of first fixing structures and the plurality of second fixing structures are all equally spaced along the circumferential direction.

[0009] Optionally, the motor assembly structure includes multiple positioning pins, multiple first fixing structures include multiple first pin holes, multiple second fixing structures include multiple second pin holes, the positions of the multiple second pin holes correspond one-to-one with the positions of the multiple first pin holes, and the multiple positioning pins are respectively inserted into the multiple first pin holes and the multiple second pin holes.

[0010] Optionally, the motor assembly structure includes two positioning pins, the plurality of first fixing structures include two first pin holes, the plurality of second fixing structures include two second pin holes, and the two first pin holes and the two second pin holes are symmetrically arranged on both sides of the first shaft hole and the second shaft hole.

[0011] Optionally, the oil seal seat is welded to the bottom wall of the motor housing.

[0012] Optionally, the motor assembly structure includes multiple fastening connectors, the multiple first fixing structures include multiple first mounting holes, the multiple second fixing structures include multiple second mounting holes, the positions of the multiple second mounting holes correspond one-to-one with the positions of the multiple first mounting holes, and the multiple fastening connectors are respectively inserted into the multiple first mounting holes and the multiple second mounting holes to fix the oil seal seat to the bottom wall of the motor housing.

[0013] Optionally, the fastening connector is a rivet.

[0014] Optionally, the circumferential position of the fastening connector is offset from the circumferential position of the locating pin.

[0015] Optionally, the motor assembly structure includes four of the aforementioned fastening connectors.

[0016] Optionally, the first receiving groove is formed on the outer surface of the bottom wall of the motor housing, the oil seal seat is fixed to the outer side of the bottom wall of the motor housing, and the second receiving groove is formed on the side of the oil seal seat facing the motor housing, wherein the volume of the first receiving groove is greater than the volume of the second receiving groove.

[0017] Alternatively, the first receiving groove is formed on the inner surface of the bottom wall of the motor housing, the oil seal seat is fixed to the inner side of the bottom wall of the motor housing, and the second receiving groove is formed on the side of the oil seal seat facing the bottom wall of the motor housing, wherein the volume of the first receiving groove is smaller than the volume of the second receiving groove.

[0018] Optionally, the first receiving groove is formed on the outer surface of the bottom wall of the motor housing, and the oil seal seat is fixed to the outer side of the bottom wall of the motor housing; a bearing groove for receiving the bottom bearing is also formed on the inner surface of the bottom wall of the motor housing, the first shaft hole penetrates the bottom of the bearing groove, and the first receiving groove surrounds the outer side of the bearing groove.

[0019] Alternatively, the oil seal seat is fixed to the inner side of the bottom wall of the motor housing, and the oil seal seat has a second receiving groove on the side facing the bottom wall of the motor housing; the oil seal seat also has a bearing groove for accommodating the bottom bearing on the side facing the inside of the motor housing, the second shaft hole penetrates the bottom of the bearing groove, and the second receiving groove surrounds the outside of the bearing groove.

[0020] Optionally, the bearing groove includes a bearing positioning groove and an inner oil seal groove. The inner oil seal groove is formed at the bottom of the bearing positioning groove. The bearing positioning groove is used to accommodate the bottom bearing, and the inner oil seal groove is used to accommodate the inner oil seal structure.

[0021] Optionally, the oil seal seat is fixed to the outer side of the bottom wall of the motor housing, and a second receiving groove is formed on the side of the oil seal seat facing the bottom wall of the motor housing; an outer oil seal groove for accommodating an outer oil seal structure is also formed on the side of the oil seal seat facing the outside of the motor housing, the second shaft hole penetrates the bottom of the outer oil seal groove, and the second receiving groove surrounds the outside of the outer oil seal groove;

[0022] Alternatively, the oil seal seat is fixed to the inner side of the bottom wall of the motor housing, and the first receiving groove is formed on the inner surface of the bottom wall of the motor housing; an outer oil seal groove for accommodating the outer oil seal structure is also formed on the outer surface of the bottom wall of the motor housing, the first shaft hole penetrates the bottom of the outer oil seal groove, and the first receiving groove surrounds the outer side of the outer oil seal groove.

[0023] Optionally, the outer oil seal groove includes a first outer seal groove and a second outer seal groove, the bottom of the bearing positioning groove, and the second outer seal groove is formed at the bottom of the first outer seal groove. The first outer seal groove and the second outer seal groove are respectively used to accommodate the outer oil seal structure of corresponding size.

[0024] Optionally, the motor assembly structure further includes an annular sealing gasket, which surrounds the outside of the first receiving groove and the second receiving groove, and seals the gap between the oil seal seat and the bottom wall of the motor housing.

[0025] Optionally, the annular sealing gasket has a plurality of clearance through holes, the positions of which correspond one-to-one with the positions of the plurality of first fixing structures and the plurality of second fixing structures.

[0026] Optionally, the oil seal seat has a sealing groove formed on the side facing the bottom wall of the motor housing, and the annular sealing gasket is accommodated in the sealing groove and seals the gap between the bottom wall of the sealing groove and the bottom wall of the motor housing.

[0027] Optionally, the motor housing includes a top shell and a bottom shell, the top shell and the bottom shell being connected to each other, and the side of the bottom shell facing away from the top shell forming the bottom wall of the motor housing.

[0028] Optionally, a top positioning groove for accommodating a top bearing is formed on the inner surface of the top shell on the side opposite to the bottom shell.

[0029] As a second aspect of this utility model, a rotary motor is provided, including a stator assembly, a rotor assembly, a rotating shaft, and a motor assembly structure provided by this utility model. The stator assembly, the rotor assembly, and the rotating shaft are all disposed in the motor housing of the motor assembly structure. The rotating shaft passes through a first shaft hole and a second shaft hole of the motor assembly structure. One of the stator assembly and the rotor assembly is fixedly connected to the motor housing, and the other is fixedly disposed on the rotating shaft.

[0030] Optionally, the rotary motor further includes at least one bottom bearing, which is housed in the bearing groove. The outer ring structure of the bottom bearing is fixedly connected to the bearing groove, and the inner ring structure of the bottom bearing is sleeved on the rotating shaft.

[0031] Optionally, the rotary motor further includes at least one inner oil seal structure, the bearing groove includes a bearing positioning groove and an inner oil seal groove, the bottom bearing is accommodated in the bearing positioning groove, the inner oil seal structure is accommodated in the inner oil seal groove, and the rotating shaft passes through the inner hole of the inner oil seal structure.

[0032] Optionally, the rotary motor further includes at least one external oil seal structure, which is disposed in the external oil seal groove, and the rotating shaft passes through the inner hole of the external oil seal structure.

[0033] Optionally, the rotary motor further includes an annular baffle, which is disposed between the outer ring structure of the bottom bearing and the inner oil seal structure.

[0034] Optionally, the rotary motor further includes a top bearing, the motor housing includes a top shell and a bottom shell, the top shell and the bottom shell are mated and connected, and the side of the bottom shell opposite to the top shell forms the bottom wall of the motor housing, a top positioning groove is formed on the inner surface of the side of the top shell opposite to the bottom shell, the top bearing is accommodated in the top positioning groove, the outer ring structure of the top bearing is fixedly connected to the top positioning groove, and the inner ring structure of the top bearing is sleeved on the rotating shaft.

[0035] In the motor assembly structure and rotary motor provided by this utility model, the bottom wall of the motor housing has multiple first fixing structures and the oil seal seat has multiple second fixing structures. The multiple first fixing structures and the multiple second fixing structures are interconnected, which can effectively ensure the alignment accuracy between the motor housing and the oil seal seat, thereby ensuring the concentricity between the first shaft hole on the bottom wall of the motor housing and the second shaft hole on the oil seal seat, thereby improving the axial stability of the rotating shaft when it rotates, and ensuring the stability and service life of the rotary motor.

[0036] Furthermore, the oil seal seat is only fixedly connected to the bottom wall of the motor housing and does not need to contact the side wall of the motor housing. This not only simplifies the installation steps of the oil seal seat and avoids damage to the sealing ring and other structures during installation, but also frees up sufficient winding space in the area around the side wall of the motor housing to ensure the creepage clearance size. This makes it less likely to break through the motor housing when the stator winding becomes loose, thus ensuring the safety of the rotating motor. Attached Figure Description

[0037] The present invention will be further described below with reference to the accompanying drawings:

[0038] Figure 1 This is a cross-sectional schematic diagram of a motor assembly structure provided in one embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the internal structure of a rotary motor provided in one embodiment of the present invention;

[0040] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of a medium-speed rotating electric motor;

[0041] Figure 4 This is a schematic diagram of the internal structure of a rotary motor provided in another embodiment of the present invention;

[0042] Figure 5 yes Figure 4 A schematic diagram of the cross-sectional structure of a medium-speed rotating electric motor;

[0043] Figure 6 yes Figure 4 A schematic diagram of the bottom structure of a medium-sized rotary electric motor;

[0044] Figure 7 This is a schematic diagram of the internal structure of a rotary motor provided in another embodiment of the present invention;

[0045] Figure 8 yes Figure 7 A schematic diagram of the bottom structure of a medium-sized rotary electric motor;

[0046] Figure 9 This is a schematic diagram of the internal structure of a rotary motor provided in another embodiment of the present invention;

[0047] Figure 10 yes Figure 9 A schematic diagram of the bottom structure of a medium-sized rotary electric motor;

[0048] Figure 11 This is a schematic diagram of the internal structure of a rotary motor provided in another embodiment of the present invention;

[0049] Figure 12 yes Figure 11 A schematic diagram of the oil filling process for a medium-speed rotating electric motor;

[0050] Figure 13 yes Figure 11 A partial structural diagram of a medium-speed rotating motor after oil filling.

[0051] Explanation of reference numerals in the attached figures:

[0052] Motor housing 100; top shell 101; bottom shell 102; first shaft hole 110; first receiving groove 120; first fixing structure 130; first pin hole 140; oil seal seat 200; second shaft hole 210; second receiving groove 220; second fixing structure 230; second pin hole 240; positioning pin 300; fastening connector 400; annular sealing gasket 500; bearing groove a; bearing positioning groove a1; inner oil seal groove a2; outer oil seal groove b; first outer seal groove b1; second outer seal groove b2; stator assembly 10; rotor assembly 20; rotating shaft 30; bottom bearing 40; inner oil seal structure 50; outer oil seal structure 60; annular baffle 70; top bearing 80. Detailed Implementation

[0053] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0054] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0055] In the existing motor structure, the lower bearing housing is positioned by the fit between its outer surface and the inner sidewalls of the lower housing. However, there is a concentricity error between the sidewalls of the lower housing and the shaft hole of the lower housing, and there is also a concentricity error between the outer surface of the lower bearing housing and the shaft hole of the lower bearing housing. This causes the errors of the shaft hole of the lower bearing housing and the shaft hole of the lower housing to accumulate, resulting in poor alignment between the two and affecting the smoothness of motor operation.

[0056] Furthermore, the sealing ring needs to be accommodated in the annular groove at the bottom of the lower bearing housing. The installation process is relatively complicated. The sealing ring needs to be inserted into the annular groove at the bottom of the lower bearing housing first, and then the lower bearing housing needs to be pressed into the lower housing with a press. There is a risk of damage to the sealing ring causing lubricating grease leakage, resulting in poor motor sealing performance.

[0057] To address the aforementioned technical problems, as one aspect of this utility model, a motor assembly structure is provided, such as... Figures 1 to 11 As shown, the motor assembly structure includes a motor housing 100 and an oil seal seat 200. The motor housing 100 has an internal cavity for accommodating the motor stator. A first shaft hole 110 and a first receiving groove 120 surrounding the first shaft hole 110 are formed on the bottom wall of the motor housing 100. A second shaft hole 210 and a second receiving groove 220 surrounding the second shaft hole 210 are formed on the oil seal seat 200. The first shaft hole 110 and the second shaft hole 210 are positioned correspondingly. The first receiving groove 120 and the second receiving groove 220 together form an oil cavity. The bottom wall of the motor housing 100 has a plurality of first fixing structures 130, and the oil seal seat 200 has a plurality of second fixing structures 230. The plurality of first fixing structures 130 and the plurality of second fixing structures 230 are positioned one-to-one and connected to each other.

[0058] It is understood that the motor housing 100 is used to accommodate the stator assembly 10, the rotor assembly 20 and the rotating shaft 30. The first shaft hole 110 and the second shaft hole 210 are both used to allow the bottom end of the rotating shaft 30 to pass through to the outside of the motor housing 100. The oil cavity formed by the first receiving groove 120 and the second receiving groove 220 is used to contain lubricating grease so as to lubricate the bearings on the rotating shaft 30 through the lubricating grease.

[0059] In the motor assembly structure provided by this utility model, the bottom wall of the motor housing 100 has a plurality of first fixing structures 130, and the oil seal seat 200 has a plurality of second fixing structures 230. The plurality of first fixing structures 130 and the plurality of second fixing structures are interconnected, which can effectively ensure the alignment accuracy between the motor housing 100 and the oil seal seat 200, thereby ensuring the concentricity between the first shaft hole 110 on the bottom wall of the motor housing 100 and the second shaft hole 210 on the oil seal seat 200, thereby improving the axial stability of the rotating shaft 30 when it rotates, and ensuring the stability and service life of the rotating motor.

[0060] Furthermore, the oil seal seat 200 is only fixedly connected to the bottom wall of the motor housing 100 and does not need to contact the side wall of the motor housing 100. This not only simplifies the installation steps of the oil seal seat 200 and avoids damage to the sealing ring and other structures during installation, but also frees up sufficient winding space in the area around the side wall of the motor housing 100 to ensure the creepage clearance size. This makes it less likely to break through the motor housing 100 when the stator winding becomes loose, thus ensuring the safety of the rotating motor.

[0061] As an optional embodiment of this utility model, the positions of the plurality of first fixing structures 130 and the plurality of second fixing structures 230 are all distributed around the outside of the first receiving groove 120 and the second receiving groove 220.

[0062] Optionally, the positions of the plurality of first fixing structures 130 and the plurality of second fixing structures 230 are all equally spaced along the circumferential direction.

[0063] As an optional embodiment of this utility model, such as Figures 1 to 5 , Figures 7 to 11 As shown, the oil seal seat 200 is a sheet metal part, that is, the oil seal seat 200 can be formed by a piece or plate of metal material through metal forming processes such as stamping.

[0064] As an optional embodiment of this utility model, the first fixing structure 130 and the second fixing structure 230 can be hole structures, used to cooperate with the pin to position the oil seal seat 200. Specifically, as shown... Figures 1 to 11As shown, the motor assembly structure includes multiple positioning pins 300, multiple first fixing structures 130 including multiple first pin holes, and multiple second fixing structures 230 including multiple second pin holes. The positions of the multiple second pin holes correspond one-to-one with the positions of the multiple first pin holes. The multiple positioning pins 300 are respectively inserted into the multiple first pin holes and the multiple second pin holes.

[0065] As an optional embodiment of this utility model, such as Figure 1 As shown, the first pin hole can be a through hole that extends along the thickness direction of the oil seal seat 200, and the second pin hole can be a through hole that extends along the thickness direction of the bottom wall of the motor housing 100.

[0066] As an optional embodiment of this utility model, such as Figures 1 to 11 As shown, the motor assembly structure includes two positioning pins 300, multiple first fixing structures 130 including two first pin holes, and multiple second fixing structures 230 including two second pin holes. The two first pin holes and the two second pin holes are symmetrically arranged on both sides of the first shaft hole 110 and the second shaft hole 210.

[0067] In some embodiments of this utility model, the number of positioning pins 300, the first pin hole, and the second pin hole can also be 3, 4, 5, or other numbers.

[0068] In other embodiments of this utility model, the first fixing structure 130 and the second fixing structure 230 may also adopt other forms of positioning structures. For example, one of the first fixing structure 130 and the second fixing structure 230 may include a protrusion, and the other may include a groove, with the protrusion accommodated in the groove to achieve a positioning effect; or, the first fixing structure 130 and the second fixing structure 230 may be magnetic blocks, with the first fixing structure 130 and the second fixing structure 230 at corresponding positions adsorbing each other to achieve a positioning effect, and so on.

[0069] As an optional embodiment of this utility model, the oil seal seat 200 is welded to the bottom wall of the motor housing 100.

[0070] As an optional embodiment of this utility model, such as Figures 1 to 11 As shown, the outer edge of the oil seal seat 200 is circular in shape to form a continuous weld.

[0071] In other embodiments of this utility model, the oil seal seat 200 and the bottom wall of the motor housing 100 can also be connected to each other in other ways, such as adhesive connection, cold pressing connection, fastener assembly connection, thermal stress fit connection, etc.

[0072] As an optional embodiment of this utility model, such as Figures 4 to 6As shown, the motor assembly structure includes multiple fastening connectors 400, multiple first fixing structures 130 including multiple first mounting holes, and multiple second fixing structures 230 including multiple second mounting holes. The positions of the multiple second mounting holes correspond one-to-one with the positions of the multiple first mounting holes. The multiple fastening connectors 400 are respectively inserted into the multiple first mounting holes and the multiple second mounting holes to fix the oil seal seat 200 to the bottom wall of the motor housing 100.

[0073] Preferably, such as Figure 4 , Figure 6 As shown, the fastening connector 400 is a rivet. Rivets have good resistance to vibration environments and are especially suitable for installation on components of rotating motors.

[0074] In other embodiments of this utility model, the fastening connector 400 may also adopt other forms of fastening structure, such as screws, bolts, etc.

[0075] As an optional embodiment of this utility model, such as Figure 4 , Figure 6 As shown, the circumferential position of the fastening connector 400 is offset from the circumferential position of the locating pin 300.

[0076] As an optional embodiment of this utility model, such as Figure 6 As shown, the motor assembly structure includes four fastening connectors 400.

[0077] In some embodiments of this utility model, the number of fastening connectors 400 may be 2, 3, 5, 6 or other numbers.

[0078] As a preferred embodiment of this utility model, such as Figure 11 As shown, a first receiving groove 120 (i.e., the first receiving groove 120 is recessed into the interior of the motor housing 100) is formed on the outer surface of the bottom wall of the motor housing 100. The oil seal seat 200 is fixed to the outer side of the bottom wall of the motor housing 100, and a second receiving groove 220 is formed on the side of the oil seal seat 200 facing the motor housing 100. The volume of the first receiving groove 120 is greater than the volume of the second receiving groove 220.

[0079] Alternatively, a first receiving groove 120 is formed on the inner surface of the bottom wall of the motor housing 100 (i.e., the first receiving groove 120 protrudes outward from the motor housing 100), the oil seal seat 200 is fixed to the inner side of the bottom wall of the motor housing 100, and a second receiving groove 220 is formed on the side of the oil seal seat 200 facing the bottom wall of the motor housing 100, the volume of the first receiving groove 120 is smaller than the volume of the second receiving groove 220.

[0080] In this embodiment of the invention, the volume of the receiving groove facing the inner side of the oil seal seat 200 is larger than the volume of the receiving groove facing the outer side of the oil seal seat 200. Therefore, when the rotary motor is inverted and oil is injected into the oil chamber of the rotary motor, the lubricating grease can fill the larger receiving groove (e.g., ...). Figure 12 As shown), when the rotary motor is flipped back to its operating state, the level of the lubricating grease can be higher than that of the smaller receiving tank (such as...). Figure 13 As shown), this ensures that the bottom bearing 40 and other components are wetted, improving the lubrication effect of the rotary motor and further ensuring the smooth operation of the rotary motor.

[0081] As an optional embodiment of this utility model, the oil seal seat 200 can be formed as the inner side of the oil seal seat 200 or as the outer side of the oil seal seat 200. Specifically, as shown in the figure... Figures 1 to 8 As shown, a first receiving groove 120 is formed on the outer surface of the bottom wall of the motor housing 100, and the oil seal seat 200 is fixed to the outer side of the bottom wall of the motor housing 100; a bearing groove a for accommodating the bottom bearing 40 is also formed on the inner surface of the bottom wall of the motor housing 100, the first shaft hole 110 penetrates the bottom of the bearing groove a, and the first receiving groove 120 surrounds the outer side of the bearing groove a.

[0082] Or, such as Figures 9 to 10 As shown, the oil seal seat 200 is fixed to the inner side of the bottom wall of the motor housing 100, and a second receiving groove 220 is formed on the side of the oil seal seat 200 facing the bottom wall of the motor housing 100; a bearing groove a for accommodating the bottom bearing 40 is also formed on the side of the oil seal seat 200 facing the inside of the motor housing 100, the second shaft hole 210 penetrates the bottom of the bearing groove a, and the second receiving groove 220 surrounds the outside of the bearing groove a.

[0083] Optionally, such as Figure 1 As shown, the bearing groove a includes a bearing positioning groove a1 and an inner oil seal groove a2. The inner oil seal groove a2 is formed at the bottom of the bearing positioning groove a1. The bearing positioning groove a1 is used to accommodate the bottom bearing 40, and the inner oil seal groove a2 is used to accommodate the inner oil seal structure 50.

[0084] As an optional embodiment of this utility model, such as Figures 1 to 8 As shown, the oil seal seat 200 is fixed to the outer side of the bottom wall of the motor housing 100. A second receiving groove 220 is formed on the side of the oil seal seat 200 facing the bottom wall of the motor housing 100. An outer oil seal groove b for accommodating the outer oil seal structure 60 is also formed on the side of the oil seal seat 200 facing the outside of the motor housing 100. The second shaft hole 210 penetrates the bottom of the outer oil seal groove b. The second receiving groove 220 surrounds the outside of the outer oil seal groove b.

[0085] Or, such as Figures 9 to 10As shown, the oil seal seat 200 is fixed to the inner side of the bottom wall of the motor housing 100. A first receiving groove 120 is formed on the inner surface of the bottom wall of the motor housing 100. An outer oil seal groove b for accommodating the outer oil seal structure 60 is also formed on the outer surface of the bottom wall of the motor housing 100. A first shaft hole 110 penetrates the bottom of the outer oil seal groove b. The first receiving groove 120 surrounds the outer side of the outer oil seal groove b.

[0086] Optionally, such as Figure 1 As shown, the outer oil seal groove b includes a first outer seal groove b1 and a second outer seal groove b2, the bottom of the bearing positioning groove a1, and the second outer seal groove b2 formed at the bottom of the first outer seal groove b1. The first outer seal groove b1 and the second outer seal groove b2 are respectively used to accommodate the outer oil seal structure 60 of the corresponding size.

[0087] As an optional embodiment of this utility model, such as Figures 5 to 8 As shown, the motor assembly structure also includes an annular sealing gasket 500, which surrounds the outside of the first receiving groove 120 and the second receiving groove 220, and seals the gap between the oil seal seat 200 and the bottom wall of the motor housing 100.

[0088] As an optional embodiment of this utility model, such as Figures 4 to 5 As shown, the annular sealing gasket 500 has multiple clearance through holes, and the positions of the multiple clearance through holes correspond one-to-one with the positions of the multiple first fixing structures 130 and the multiple second fixing structures 230.

[0089] As an optional embodiment of this utility model, such as Figures 7 to 8 As shown, the oil seal seat 200 has a sealing groove formed on the side facing the bottom wall of the motor housing 100, and the annular sealing gasket 500 is accommodated in the sealing groove, sealing the gap between the bottom wall of the sealing groove and the bottom wall of the motor housing 100.

[0090] As an optional embodiment of this utility model, such as Figures 1 to 5 , Figures 7 to 11 As shown, the motor housing 100 includes a top shell 101 and a bottom shell 102, which are connected to each other, and the side of the bottom shell 102 away from the top shell 101 forms the bottom wall of the motor housing 100.

[0091] As an optional embodiment of this utility model, such as Figures 1 to 5 , Figures 7 to 11 As shown, a top positioning groove for accommodating the top bearing 80 is formed on the inner surface of the top shell 101 on the side opposite to the bottom shell 102.

[0092] As an optional embodiment of this utility model, such as Figures 1 to 5 , Figures 7 to 11 As shown, the bottom shell 102 is a sheet metal part.

[0093] As a second aspect of this utility model, a rotary motor is provided, such as... Figures 2 to 11 As shown, the rotary motor includes a stator assembly 10, a rotor assembly 20, a rotating shaft 30, and a motor assembly structure provided by this utility model. The stator assembly 10, the rotor assembly 20, and the rotating shaft 30 are all disposed in the motor housing 100 of the motor assembly structure. The rotating shaft 30 passes through the first shaft hole 110 and the second shaft hole 210 of the motor assembly structure. One of the stator assembly 10 and the rotor assembly 20 is fixedly connected to the motor housing 100, and the other is fixedly disposed on the rotating shaft 30.

[0094] In the rotary motor provided by this utility model, the bottom wall of the motor housing 100 has a plurality of first fixing structures 130, and the oil seal seat 200 has a plurality of second fixing structures 230. The plurality of first fixing structures 130 and the plurality of second fixing structures are interconnected, which can effectively ensure the alignment accuracy between the motor housing 100 and the oil seal seat 200, thereby ensuring the concentricity between the first shaft hole 110 on the bottom wall of the motor housing 100 and the second shaft hole 210 on the oil seal seat 200, thereby improving the axial stability of the rotating shaft 30 when it rotates, and ensuring the stability and service life of the rotary motor;

[0095] Furthermore, the oil seal seat 200 is only fixedly connected to the bottom wall of the motor housing 100 and does not need to contact the side wall of the motor housing 100. This not only simplifies the installation steps of the oil seal seat 200 and avoids damage to the sealing ring and other structures during installation, but also frees up sufficient winding space in the area around the side wall of the motor housing 100 to ensure the creepage clearance size. This makes it less likely to break through the motor housing 100 when the stator winding becomes loose, thus ensuring the safety of the rotating motor.

[0096] As an optional embodiment of this utility model, such as Figures 2 to 5 , Figures 7 to 11 As shown, the rotary motor also includes at least one bottom bearing 40, which is housed in a bearing groove a. The outer ring structure of the bottom bearing 40 is fixedly connected to the bearing groove a, and the inner ring structure of the bottom bearing 40 is sleeved on the rotating shaft 30.

[0097] As an optional embodiment of this utility model, such as Figures 2 to 5 , Figures 7 to 11 As shown, the rotary motor also includes at least one inner oil seal structure 50, the bearing groove a includes a bearing positioning groove a1 and an inner oil seal groove a2, the bottom bearing 40 is accommodated in the bearing positioning groove a1, the inner oil seal structure 50 is accommodated in the inner oil seal groove a2, and the rotating shaft 30 passes through the inner hole of the inner oil seal structure 50.

[0098] As an optional embodiment of this utility model, such as Figures 2 to 5 , Figures 7 to 11 As shown, the rotary motor also includes at least one external oil seal structure 60, which is disposed in the external oil seal groove b, and the rotating shaft 30 passes through the inner hole of the external oil seal structure 60.

[0099] As an optional embodiment of this utility model, such as Figures 2 to 5 , Figures 7 to 11 As shown, the rotary motor also includes an annular baffle 70, which is disposed between the outer ring structure of the bottom bearing 40 and the inner oil seal structure 50.

[0100] As an optional embodiment of this utility model, such as Figures 2 to 5 , Figures 7 to 11 As shown, the rotary motor also includes a top bearing 80. The motor housing 100 includes a top shell 101 and a bottom shell 102, which are connected to each other. The side of the bottom shell 102 away from the top shell 101 forms the bottom wall of the motor housing 100. A top positioning groove is formed on the inner surface of the side of the top shell 101 away from the bottom shell 102. The top bearing 80 is accommodated in the top positioning groove. The outer ring structure of the top bearing 80 is fixedly connected to the top positioning groove. The inner ring structure of the top bearing 80 is sleeved on the rotating shaft 30.

[0101] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A motor assembly structure, comprising a motor housing (100) and an oil seal seat (200), wherein the motor housing (100) has an internal cavity for accommodating a motor stator, a first shaft hole (110) and a first receiving groove (120) surrounding the first shaft hole (110) are formed on the bottom wall of the motor housing (100), and a second shaft hole (210) and a second receiving groove (220) surrounding the second shaft hole (210) are formed on the oil seal seat (200), wherein the first shaft hole (110) and the second shaft hole (210) are positioned correspondingly, and the first receiving groove (120) and the second receiving groove (220) together form an oil cavity, characterized in that, The bottom wall of the motor housing (100) has a plurality of first fixing structures (130), and the oil seal seat (200) has a plurality of second fixing structures (230). The positions of the plurality of first fixing structures (130) and the plurality of second fixing structures (230) are one-to-one and connected to each other.

2. The motor assembly structure according to claim 1, characterized in that, The motor assembly structure includes multiple positioning pins (300), multiple first fixing structures (130) include multiple first pin holes, multiple second fixing structures (230) include multiple second pin holes, the positions of the multiple second pin holes correspond one-to-one with the positions of the multiple first pin holes, and the multiple positioning pins (300) are respectively inserted into the multiple first pin holes and the multiple second pin holes.

3. The motor assembly structure according to claim 2, characterized in that, The oil seal seat (200) is welded to the bottom wall of the motor housing (100).

4. The motor assembly structure according to claim 1, characterized in that, The motor assembly structure includes multiple fastening connectors (400), multiple first fixing structures (130) include multiple first mounting holes, multiple second fixing structures (230) include multiple second mounting holes, the positions of the multiple second mounting holes correspond one-to-one with the positions of the multiple first mounting holes, and the multiple fastening connectors (400) are respectively inserted into the multiple first mounting holes and the multiple second mounting holes to fix the oil seal seat (200) to the bottom wall of the motor housing (100).

5. The motor assembly structure according to any one of claims 1 to 4, characterized in that, The first receiving groove (120) is formed on the outer surface of the bottom wall of the motor housing (100), the oil seal seat (200) is fixed to the outer side of the bottom wall of the motor housing (100), and the second receiving groove (220) is formed on the side of the oil seal seat (200) facing the motor housing (100), and the volume of the first receiving groove (120) is greater than the volume of the second receiving groove (220); Alternatively, the first receiving groove (120) is formed on the inner surface of the bottom wall of the motor housing (100), the oil seal seat (200) is fixed to the inner side of the bottom wall of the motor housing (100), and the second receiving groove (220) is formed on the side of the oil seal seat (200) facing the bottom wall of the motor housing (100), and the volume of the first receiving groove (120) is smaller than the volume of the second receiving groove (220).

6. The motor assembly structure according to any one of claims 1 to 4, characterized in that, The first receiving groove (120) is formed on the outer surface of the bottom wall of the motor housing (100), and the oil seal seat (200) is fixed to the outer side of the bottom wall of the motor housing (100); a bearing groove (a) for accommodating the bottom bearing (40) is also formed on the inner surface of the bottom wall of the motor housing (100), the first shaft hole (110) penetrates the bottom of the bearing groove (a), and the first receiving groove (120) surrounds the outside of the bearing groove (a); Alternatively, the oil seal seat (200) is fixed to the inner side of the bottom wall of the motor housing (100), and the oil seal seat (200) has a second receiving groove (220) formed on the side facing the bottom wall of the motor housing (100); the oil seal seat (200) also has a bearing groove (a) for accommodating the bottom bearing (40) formed on the side facing the inside of the motor housing (100), the second shaft hole (210) penetrates the bottom of the bearing groove (a), and the second receiving groove (220) surrounds the outside of the bearing groove (a).

7. The motor assembly structure according to claim 6, characterized in that, The bearing groove (a) includes a bearing positioning groove (a1) and an inner oil seal groove (a2). The inner oil seal groove (a2) is formed at the bottom of the bearing positioning groove (a1). The bearing positioning groove (a1) is used to accommodate the bottom bearing (40), and the inner oil seal groove (a2) is used to accommodate the inner oil seal structure (50).

8. The motor assembly structure according to claim 7, characterized in that, The oil seal seat (200) is fixed to the outer side of the bottom wall of the motor housing (100). The oil seal seat (200) has a second receiving groove (220) on the side facing the bottom wall of the motor housing (100). The oil seal seat (200) also has an outer oil seal groove (b) for accommodating the outer oil seal structure (60) on the side facing the outside of the motor housing (100). The second shaft hole (210) penetrates the bottom of the outer oil seal groove (b). The second receiving groove (220) surrounds the outside of the outer oil seal groove (b). Alternatively, the oil seal seat (200) is fixed to the inner side of the bottom wall of the motor housing (100), and the first receiving groove (120) is formed on the inner surface of the bottom wall of the motor housing (100); an outer oil seal groove (b) for accommodating the outer oil seal structure (60) is also formed on the outer surface of the bottom wall of the motor housing (100), the first shaft hole (110) penetrates the bottom of the outer oil seal groove (b), and the first receiving groove (120) surrounds the outer side of the outer oil seal groove (b).

9. The motor assembly structure according to claim 7, characterized in that, The motor assembly structure also includes an annular sealing gasket (500), which surrounds the outside of the first receiving groove (120) and the second receiving groove (220), and the annular sealing gasket (500) seals the gap between the oil seal seat (200) and the bottom wall of the motor housing (100).

10. A rotary electric motor, characterized in that, The motor assembly includes a stator assembly (10), a rotor assembly (20), a rotating shaft (30), and a motor assembly structure according to any one of claims 1 to 9. The stator assembly (10), the rotor assembly (20), and the rotating shaft (30) are all disposed in the motor housing (100) of the motor assembly structure. The rotating shaft (30) passes through the first shaft hole (110) and the second shaft hole (210) of the motor assembly structure. One of the stator assembly (10) and the rotor assembly (20) is fixedly connected to the motor housing (100), and the other is fixedly disposed on the rotating shaft (30).

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