Oil path structure and oil cooling motor

Abstract

The utility model relates to an oil path structure and an oil cooling motor, the oil path structure comprises an input shaft, a fixing ring and an oil guide pipe, the oil guide pipe is fixedly inserted in the input shaft, and the oil guide pipe comprises a pipe body, a first limiting seat and a second limiting seat; the inner wall of the first limiting seat is fixedly arranged on the peripheral side of the pipe body in a sleeving mode, a radial protrusion is fixedly arranged on one of the outer wall of the first limiting seat and the inner wall of the input shaft, a first clamping groove is formed in the other one, and the radial protrusion and the first clamping groove are matched in a limiting mode in the axial direction of the pipe body; the inner wall of the second limiting seat is fixedly arranged on the peripheral side of the pipe body in a sleeving mode, one or two of the outer wall of the second limiting seat and the inner wall of the input shaft are provided with a second clamping groove, the fixing ring is clamped in the second clamping groove, and the two ends of the fixing ring in the radial direction are connected to the second limiting seat and the input shaft in a pressing mode correspondingly; the oil guide pipe and the input shaft are in limiting fit in the radial direction of the pipe body. According to the oil path structure and the oil cooling motor provided by the invention, the problem that the oil guide structure is easy to deviate in the rotation process of the motor is solved.

Description

Technical Field

[0001] The present application relates to the technical field of motor cooling, and particularly to an oil circuit structure and an oil-cooled motor. Background Art

[0002] New energy electric drives can be divided into oil-cooled machines, water-cooled machines and air-cooled machines according to the motor cooling method. Among them, the oil-cooled machine directly cools the motor stator, rotor and reducer gear shaft system with oil as the medium. The oil directly penetrates into the stator and rotor through the oil passage, taking away the heat generated by the motor. In this way, the anti-overheating ability of the motor is greatly improved.

[0003] The oil needs to pass through a oil guiding structure to enter the motor. Usually, the oil guiding structure is fixedly installed inside the input shaft so that the oil guiding structure can rotate synchronously with the input shaft. During the rotation of the existing motor, the oil guiding structure is prone to shift, which will lead to oil leakage. Summary of the Utility Model

[0004] Based on this, it is necessary to provide an oil circuit structure and an oil-cooled motor to solve the problem that the oil guiding structure is prone to shift during the rotation of the motor.

[0005] The oil circuit structure provided by the present application includes an input shaft, a fixing ring and a oil guiding pipe. The oil guiding pipe is fixedly inserted into the input shaft. The oil guiding pipe includes a pipe body, a first limiting seat and a second limiting seat. The inner wall of the first limiting seat is fixedly sleeved on the outer peripheral side of the pipe body. One of the outer wall of the first limiting seat and the inner wall of the input shaft is fixedly provided with a radial protrusion, and the other is provided with a first card slot. The radial protrusion and the first card slot are axially limited and matched along the axial direction of the pipe body. The inner wall of the second limiting seat is fixedly sleeved on the outer peripheral side of the pipe body. One or both of the outer wall of the second limiting seat and the inner wall of the input shaft are provided with a second card slot. The fixing ring is clamped in the second card slot, and both ends of the fixing ring along its own radial direction are respectively pressed against the second limiting seat and the input shaft, so that the oil guiding pipe and the input shaft are radially limited and matched along the radial direction of the pipe body.

[0006] In one embodiment, the initial installation position of the first card slot corresponding to the radial protrusion is defined as the central slot position. The central slot position extends a first preset distance and a second preset distance respectively towards both ends along the axial direction of the pipe body to form a first card slot with an axially widened setting, and the length of the first card slot along the axial direction of the pipe body is greater than the length of the radial protrusion along the axial direction of the pipe body.

[0007] In one embodiment, the first card slot includes a first transition section, a second transition section and a slot bottom section connecting the first transition section and the second transition section. The slot bottom section extends along the axial direction of the pipe body, and the length of the slot bottom section along the axial direction of the pipe body is greater than the length of the radial protrusion along the axial direction of the pipe body.

[0008] In one embodiment, the first limiting seat includes a first circular portion and a first pipe portion. The inner side of the first circular portion is connected to the outer wall of the pipe body, and the outer side of the first circular portion extends radially along the pipe body towards the direction close to the input shaft; one end of the first pipe portion is connected to one end of the first circular portion close to the input shaft, and the other end extends along the axial direction of the pipe body. A radial protrusion is provided on the outer peripheral side of the first pipe portion.

[0009] In one embodiment, the second limiting seat includes a second circular portion and a second pipe portion. The inner side of the second circular portion is connected to the outer wall of the pipe body, and the outer side of the second circular portion extends radially along the pipe body towards the direction close to the input shaft; one end of the second pipe portion is connected to one end of the second circular portion close to the input shaft, and the other end extends along the axial direction of the pipe body. A second card slot is provided on the outer peripheral side of the second pipe portion.

[0010] In one embodiment, the first pipe portion and the second pipe portion extend in opposite directions.

[0011] In one embodiment, the oil circuit structure further includes an adapter. The adapter is provided with a connection channel communicating with the pipe body. A stop step is provided on the inner wall of the connection channel. The pipe body is inserted into the connection channel and is spaced apart from the stop step.

[0012] In one embodiment, the first limiting seat, the second limiting seat and the pipe body are integrally formed.

[0013] In one embodiment, the radial compression amount of the fixing ring is greater than or equal to 10%.

[0014] The present application also provides an oil-cooled motor, which includes the oil circuit structure described in any one of the above embodiments.

[0015] Compared with the prior art, for the oil circuit structure and the oil-cooled motor provided by the present application, with such a setting, on the one hand, through the axial limiting cooperation of the radial protrusion and the first card slot, the axial limiting cooperation between the oil guide pipe and the input shaft is realized, that is, it can prevent the large-amplitude axial offset of the oil guide pipe, thereby preventing oil leakage caused by the oil guide pipe coming off. On the other hand, by arranging the fixing ring to radially press against the outer wall of the oil guide pipe and the inner wall of the input shaft, the radial offset of the oil guide pipe relative to the input shaft is prevented.

[0016] In summary, through the limiting in two directions of axial and radial, it is difficult for the oil guide pipe to be offset relative to the input shaft, thereby greatly improving the assembly stability of the oil circuit structure. Moreover, the oil circuit structure provided by the present application can conduct the cooling oil of the oil pump to the motor, and can withstand a motor speed of 27000 rpm and an axial vibration of 30 g without offset. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 An axial sectional view of the oil circuit structure according to an embodiment provided by the present application;

[0019] Figure 2 is Figure 1 An enlarged view of the position Q shown;

[0020] Figure 3 is Figure 2 An enlarged view of the position S shown;

[0021] Figure 4 A sectional view perpendicular to the axis of the oil circuit structure according to an embodiment provided by the present application Figure 1 ;

[0022] Figure 5 A sectional view perpendicular to the axis of the oil circuit structure according to an embodiment provided by the present application Figure 2 .

[0023] Reference numerals: 100, motor shaft; 200, input shaft; 210, first card slot; 211, first transition section; 212, second transition section; 213, bottom section of the slot; 300, adapter; 310, connection channel; 311, stop step; 410, first bearing; 411, bearing pressing plate; 412, snap ring; 420, second bearing; 510, motor housing; 520, reducer housing; 521, oil inlet channel; 600, oil guide pipe; 610, pipe body; 620, first limit seat; 621, first ring portion; 622, first pipe portion; 623, radial protrusion; 624, reinforcing rib; 630, second limit seat; 631, second ring portion; 632, second pipe portion; 633, second card slot; 700, fixing ring. Detailed implementation manners

[0024] New energy electric drives can be divided into oil-cooled machines, water-cooled machines, and air-cooled machines according to the motor cooling method. Among them, the oil-cooled machine directly cools the motor stator, rotor, and reducer gear shaft system with oil as the medium. The oil directly penetrates into the stator and rotor through the oil passage, taking away the heat generated by the motor. In this way, the anti-overheating ability of the motor is greatly improved.

[0025] The oil needs to enter the interior of the motor through an oil guiding structure. Usually, the oil guiding structure is fixedly installed inside the input shaft so that the oil guiding structure can rotate synchronously with the input shaft. During the rotation of the existing motor, the oil guiding structure is prone to shift, which will lead to oil leakage.

[0026] To solve the problem that the oil guiding structure is prone to shift during the rotation of the motor, this application provides an oil circuit structure and an oil-cooled motor.

[0027] Please refer to Figures 1 - 5 , the oil circuit structure includes a motor shaft 100, an input shaft 200, a swivel joint 300, a first bearing 410, a second bearing 420, a housing, a fixing ring 700, and an oil guide pipe 600. The first bearing 410 and the second bearing 420 are respectively sleeved at both ends of the input shaft 200 along its axial direction, and both ends of the input shaft 200 are respectively connected to the housing through the first bearing 410 and the second bearing 420, so that the input shaft 200 can rotate relative to the housing.

[0028] Specifically, as Figure 1 shown, the housing includes a motor housing 510 and a reducer housing 520. Among them, the first bearing 410 is connected to the motor housing 510, and the first bearing 410 is axially pressed by a bearing pressing plate 411 to play an axial positioning role for the input shaft 200. The second bearing 420 is connected to the reducer housing 520.

[0029] Furthermore, the first bearing 410 and the input shaft 200 are matched by a snap ring 412, and the assembly of the snap ring 412 requires a clearance reserved with the first bearing 410 to be smoothly installed. That is, there is an installation clearance of the snap ring 412 between the input shaft 200 and the first bearing 410.

[0030] The motor shaft 100 is fixedly inserted into one end of the input shaft 200, and the oil guide pipe 600 is fixedly inserted into the other end of the input shaft 200, so that the motor shaft 100 can drive the input shaft 200 and the oil guide pipe 600 to rotate synchronously.

[0031] The housing is provided with an oil inlet passage 521. The swivel joint 300 is rotatably sleeved at one end of the oil guide pipe 600 away from the motor shaft 100 and is fixedly connected to the housing, and the oil inlet passage 521 communicates with the motor shaft 100 through the swivel joint 300 and the oil guide pipe 600 in sequence.

[0032] As Figure 1 and Figure 2 shown, the oil guide pipe 600 includes a pipe body 610, a first limit seat 620, and a second limit seat 630. The motor shaft 100 is fixedly sleeved at one end of the pipe body 610, and the swivel joint 300 is rotatably sleeved at the other end of the pipe body 610, and the swivel joint 300 communicates with the motor shaft 100 through the pipe body 610.

[0033] AsFigure 3 As shown, the inner wall of the first limiting seat 620 is fixedly sleeved and connected to the outer peripheral side of the pipe body 610. One of the outer wall of the first limiting seat 620 and the inner wall of the input shaft 200 is fixedly provided with a radial protrusion 623, and the other is provided with a first card slot 210 corresponding to the radial protrusion 623. The radial protrusion 623 and the first card slot 210 are in axial limiting cooperation along the pipe body 610.

[0034] That is, when the radial protrusion 623 is arranged on the outer wall of the first limiting seat 620, the first card slot 210 is arranged on the inner wall of the input shaft 200. Conversely, when the radial protrusion 623 is arranged on the inner wall of the input shaft 200, the first card slot 210 is arranged on the outer wall of the first limiting seat 620.

[0035] Specifically, in one embodiment, the radial protrusion 623 may be an annular structure continuously extending along the circumferential direction of the first limiting seat 620 or the input shaft 200. Correspondingly, the first card slot 210 is also annular.

[0036] In another embodiment, the radial protrusion 623 may also be a segmented structure arranged at intervals along the circumferential direction of the first limiting seat 620 or the input shaft 200. Correspondingly, the first card slot 210 may be annular or may be a segmented structure, and each segment of the first card slot 210 is in snap-fit with the corresponding segmented radial protrusion 623.

[0037] The inner wall of the second limiting seat 630 is fixedly sleeved and connected to the outer peripheral side of the pipe body 610. Specifically, the first limiting seat 620, the second limiting seat 630 and the pipe body 610 are integrally formed to improve the structural strength of the oil guide pipe 600.

[0038] However, it is not limited to this. In other embodiments, the first limiting seat 620 and the second limiting seat 630 may also be welded to the outer peripheral side of the pipe body 610 respectively.

[0039] Such as Figure 3 As shown, one or both of the outer wall of the second limiting seat 630 and the inner wall of the input shaft 200 are provided with a second card slot 633. The fixing ring 700 is clamped in the second card slot 633, and both ends of the fixing ring 700 along its own radial direction are respectively pressed against the second limiting seat 630 and the input shaft 200, so that the oil guide pipe 600 and the input shaft 200 are in radial limiting cooperation along the pipe body 610.

[0040] It should be noted that the second card slot 633 can be only provided on the outer wall of the second limit seat 630. At this time, the opening of the second card slot 633 faces the inner wall of the input shaft 200. The second card slot 633 can also be only provided on the inner wall of the input shaft 200. At this time, the opening of the second card slot 633 faces the outer wall of the second limit seat 630. The second card slot 633 can also be divided into two parts, one part is provided on the outer wall of the second limit seat 630, and the other part is provided on the inner wall of the input shaft 200. The two parts are arranged oppositely and are respectively clamped at the two radial ends (inner ring and outer ring) of the fixing ring 700.

[0041] With such a setting, on the one hand, through the axial limit cooperation between the radial protrusion 623 and the first card slot 210, the axial limit cooperation between the oil guiding pipe 600 and the input shaft 200 is realized. That is, it can prevent the large axial offset of the oil guiding pipe 600, thereby preventing oil leakage caused by the oil guiding pipe 600 coming off. On the other hand, by setting the fixing ring 700 to be radially crimped between the outer wall of the oil guiding pipe 600 and the inner wall of the input shaft 200, the radial offset of the oil guiding pipe 600 relative to the input shaft 200 is prevented.

[0042] In summary, through the limits in the axial and radial directions in this application, it is difficult for the oil guiding pipe 600 to shift relative to the input shaft 200, thereby greatly improving the assembly stability of the oil circuit structure. Moreover, the oil circuit structure provided in this application can conduct the cooling oil of the oil pump to the motor, can withstand a motor speed of 27,000 rpm, an axial vibration of 30 g, and there is no offset.

[0043] In one embodiment, the radial compression amount of the fixing ring 700 is greater than or equal to 10%.

[0044] In this way, it is beneficial to further improve the assembly stability of the fixing ring 700.

[0045] Preferably, the radial compression amount of the fixing ring 700 is between 10% and 30%.

[0046] In one embodiment, the cross-sectional area of the fixing ring 700 is greater than the cross-sectional area of the second card slot 633.

[0047] In this way, it is beneficial for the fixing ring 700 to always protrude from the opening of the second card slot 633 in the extrusion state, and it is beneficial for the fixing ring 700 to contact both the input shaft 200 and the oil guiding pipe 600 at the same time.

[0048] In one embodiment, the fixing ring 700 is an elastic member. Specifically, the fixing ring 700 can be a rubber member, a silica gel member or other soft plastic members.

[0049] In one embodiment, as Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, the first limiting seat 620 includes a first circular portion 621 and a first tubular portion 622. The inner side of the first circular portion 621 is connected to the outer wall of the pipe body 610, and the outer side of the first circular portion 621 extends radially along the pipe body 610 towards the direction close to the input shaft 200. One end of the first tubular portion 622 is connected to one end of the first circular portion 621 close to the input shaft 200, and the other end extends along the axial direction of the pipe body 610. The radial protrusion 623 is arranged on the outer peripheral side of the first tubular portion 622.

[0050] Specifically, in one embodiment, the first limiting seat 620 is integrally cylindrical around the pipe body 610. Correspondingly, the first circular portion 621 is a flat circular structure, and the first tubular portion 622 is a cylindrical tubular structure.

[0051] With such a setting, it is beneficial to select the setting position of the radial protrusion 623 along the axial direction of the pipe body 610.

[0052] Furthermore, in one embodiment, a reinforcing rib 624 is provided between the first circular portion 621 and the first tubular portion 622 to enhance the anti-deformation ability of the first limiting seat 620.

[0053] Specifically, the reinforcing rib 624 extends along the axial direction of the first tubular portion 622, and one end of the reinforcing rib 624 is connected to the outer wall of the first tubular portion, and the other end is connected to the inner wall of the first circular portion 621. A plurality of reinforcing ribs 624 are arranged at intervals along the circumferential direction of the first tubular portion 622.

[0054] It should be noted that one end of the reinforcing rib 624 close to the first circular portion 621 is connected to the first circular portion 621 to further enhance the structural strength of the entire first limiting seat 620.

[0055] Correspondingly, in one embodiment, as Figure 1 and Figure 2 shown, the second limiting seat 630 includes a second circular portion 631 and a second tubular portion 632. The inner side of the second circular portion 631 is connected to the outer wall of the pipe body 610, and the outer side of the second circular portion 631 extends radially along the pipe body 610 towards the direction close to the input shaft 200. One end of the second tubular portion 632 is connected to one end of the second circular portion 631 close to the input shaft 200, and the other end extends along the axial direction of the pipe body 610. The second card slot 633 is arranged on the outer peripheral side of the second tubular portion 632.

[0056] With such a setting, it is beneficial to select the setting position of the fixing ring 700 along the axial direction of the pipe body 610.

[0057] Furthermore, in one embodiment, the first tubular portion 622 and the second tubular portion 632 extend in opposite directions. In this way, it is beneficial to avoid interference between the first limiting seat 620 and the second limiting seat 630.

[0058] It should be noted that the oil guiding structure of existing motors is often assembled last. In this way, the assembly tolerance of the oil guiding structure is relatively large.

[0059] Moreover, in order to ensure that the oil guiding structure is not damaged during the assembly process, the press-fitting tooling of the oil guiding structure must have a stop head so that the press-fitting tooling can only press the oil guiding structure into a predetermined depth. In this way, although the press-fitting tooling ensures the assembly safety of the oil guiding structure, due to the existence of assembly tolerance, the oil guiding structure may not reach the preset installation position or may exceed the preset installation position. In either case, it is likely to cause the oil guiding structure to be insecurely installed or even leak oil.

[0060] In order to solve the above technical problems, in one embodiment, the initial installation position of the first card slot 210 corresponding to the radial protrusion 623 is defined as the central slot position. The central slot position extends a first preset distance and a second preset distance along the axial direction of the pipe body 610 towards both ends respectively to form the first card slot 210 with an axially widened setting, and the length of the first card slot 210 along the axial direction of the pipe body 610 is greater than the length of the radial protrusion 623 along the axial direction of the pipe body 610.

[0061] It should be noted that when the first card slot 210 is processed, the abutting end face between the first bearing 410 and the housing is used as the positioning point, and there is a relatively small processing error between the first card slot 210 and this abutting end face.

[0062] Furthermore, according to the assembly methods between various components and combined with the calculation of the dimensional chain, it is confirmed that the distance between the left end of the first card slot 210 and the lower end face of the input shaft 200 is 43.28 mm, and the distance between the right end of the first card slot 210 and the lower end face of the input shaft 200 is 44.84 mm. Therefore, the design of the first card slot 210 needs to be within this range interval.

[0063] In this way, by leaving sufficient assembly allowance in the axial direction of the first card slot 210 along the pipe body 610, it is ensured that when the oil guiding pipe 600 does not reach the central slot position or exceeds the central slot position during the installation process, it can be snapped into the first card slot 210.

[0064] In one embodiment, the first preset distance is equal to the second preset distance.

[0065] However, it is not limited to this. In other embodiments, the relative sizes of the two can also be set according to the actual tolerance deviation.

[0066] Specifically, in one embodiment, the first preset distance is defined as the distance extending towards the motor shaft 100, and the second preset distance is defined as the distance extending towards the adapter 300. In this way, the first preset distance represents the minimum tolerance range for the installation of the oil guiding pipe 600, and the second preset distance represents the maximum tolerance range for the installation of the oil guiding pipe 600, and both can be obtained through calculation.

[0067] In one embodiment, as Figure 3 shown, the first card slot 210 includes a first transition section 211, a second transition section 212, and a slot bottom section 213 connecting the first transition section 211 and the second transition section 212. The slot bottom section 213 extends along the axial direction of the pipe body 610, and the length of the slot bottom section 213 along the axial direction of the pipe body 610 is greater than the length of the radial protrusion 623 along the axial direction of the pipe body 610.

[0068] Such a setting is conducive to the disassembly and assembly of the oil guide pipe 600.

[0069] Specifically, both the first transition section 211 and the second transition section 212 are arc-shaped.

[0070] In one embodiment, as Figure 1 and Figure 2 shown, the adapter 300 is provided with a connection channel 310. A stop step 311 is provided on the inner wall of the connection channel 310. The pipe body 610 is inserted into the connection channel 310 and is spaced apart from the stop step 311.

[0071] It should be noted that after the first card slot 210 is designed, due to the relative movement between the oil guide pipe 600 and the adapter 300, in order to prevent interference between the oil guide pipe 600 and the adapter 300, it is necessary to perform a check calculation on the position of the confirmed first card slot 210.

[0072] Specifically, through calculation, there is still a clearance of 1.08 mm - 4.15 mm between the oil guide pipe 600 and the adapter 300. Moreover, the overlapping length between the oil guide pipe 600 and the adapter 300 is 2.96 mm - 6.6 mm. That is to say, the depth of the pipe body 610 inserted into the connection channel 310 is 2.96 mm - 6.6 mm.

[0073] Such a setting can, on the one hand, prevent the oil guide pipe 600 from detaching from the adapter 300 and causing oil leakage, and on the other hand, prevent interference between the pipe body 610 and the stop step 311.

[0074] This application also provides an oil-cooled motor, and the oil-cooled motor includes the oil circuit structure described in any one of the above embodiments.

[0075] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0076] The above-described embodiments merely represent several implementation manners of the present application. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

[0077] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.

[0078] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0079] In the present application, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0080] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0081] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0082] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific implementations and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

Claims

1. An oil circuit structure, characterized in that: It comprises an input shaft (200), a fixing ring (700) and an oil guide pipe (600), wherein the oil guide pipe (600) is fixedly inserted into the input shaft (200), and the oil guide pipe (600) comprises a pipe body (610), a first limiting seat (620) and a second limiting seat (630); The inner wall of the first limiting seat (620) is fixedly sleeved on the outer peripheral side of the tube body (610); one of the outer wall of the first limiting seat (620) and the inner wall of the input shaft (200) is fixedly provided with a radial protrusion (623), and the other is provided with a first clamping groove (210); the radial protrusion (623) and the first clamping groove (210) are matched along the axial limiting direction of the tube body (610); The inner wall of the second limit seat (630) is fixedly sleeved on the outer peripheral side of the tube body (610), and one or both of the outer wall of the second limit seat (630) and the inner wall of the input shaft (200) are provided with a second clamping groove (633). The fixing ring (700) is clamped in the second clamping groove (633), and the fixing ring (700) is respectively pressed on the second limit seat (630) and the input shaft (200) at two ends along its radial direction, so that the oil guide pipe (600) and the input shaft (200) are limitedly matched along the radial direction of the tube body (610).

2. The oil circuit structure according to claim 1, characterized in that: The initial installation position of the first slot (210) corresponding to the radial protrusion (623) is defined as a central slot, and the central slot extends along the axial direction of the tube body (610) to both ends by a first preset distance and a second preset distance respectively, so as to form the first slot (210) that is axially widened, and the length of the first slot (210) along the axial direction of the tube body (610) is greater than the length of the radial protrusion (623) along the axial direction of the tube body (610).

3. The oil circuit structure according to claim 2, characterized in that: The first groove (210) comprises a first transition section (211), a second transition section (212) and a groove bottom section (213) connecting the first transition section (211) and the second transition section (212), the groove bottom section (213) extending axially along the tube body (610), and the length of the groove bottom section (213) along the axial direction of the tube body (610) is greater than the length of the radial protrusion (623) along the axial direction of the tube body (610).

4. The oil circuit structure according to claim 1, characterized in that: The first limiting seat (620) comprises a first ring portion (621) and a first tube portion (622); the inner side of the first ring portion (621) is connected to the outer wall of the tube body (610); and the outer side of the first ring portion (621) extends along the radial direction of the tube body (610) toward the input shaft (200); One end of the first tube portion (622) is connected to one end of the first ring portion (621) close to the input shaft (200), and the other end extends along the axial direction of the tube body (610). The radial protrusion (623) is arranged on the outer peripheral side of the first tube portion (622).

5. The oil circuit structure according to claim 4, characterized in that: The second limiting seat (630) comprises a second ring portion (631) and a second tube portion (632); the inner side of the second ring portion (631) is connected to the outer wall of the tube body (610); and the outer side of the second ring portion (631) extends along the radial direction of the tube body (610) toward the input shaft (200); One end of the second tube portion (632) is connected to one end of the second ring portion (631) close to the input shaft (200), and the other end extends along the axial direction of the tube body (610). The second clamping groove (633) is arranged on the outer peripheral side of the second tube portion (632).

6. The oil circuit structure according to claim 5, characterized in that: The first tube portion (622) and the second tube portion (632) extend in opposite directions.

7. The oil circuit structure according to claim 1, characterized in that: It also comprises an adapter (300), wherein the adapter (300) is provided with a connecting channel (310) connected to the tube body (610), the inner wall of the connecting channel (310) is provided with a stop step (311), and the tube body (610) is inserted into the connecting channel (310) and spaced apart from the stop step (311).

8. The oil circuit structure according to claim 1, characterized in that: The first limiting seat (620), the second limiting seat (630) and the tube body (610) are integrally formed.

9. The oil circuit structure according to claim 1, characterized in that: The radial compression amount of the fixing ring (700) is greater than or equal to 10%.

10. An oil-cooled motor, characterized in that: It comprises the oil circuit structure as described in any one of claims 1 to claim 9.

Images