Detachable transmission oil plug, transmission and new energy vehicle

Abstract

The present application belongs to the technical field of transmission devices, and particularly relates to a detachable transmission oil plug, a transmission and a new energy vehicle. The detachable transmission oil plug comprises a main body and a magnetic member. The main body is provided with a connecting structure for detachable connection with a transmission housing. An end of the main body facing the inside of the transmission is provided with a mounting structure for mounting the magnetic member. The magnetic member is mounted at the end of the main body facing the inside of the transmission through the mounting structure. The magnetic member is used for adsorbing iron filings in transmission lubricating oil. The outer surface of the main body is provided with threads. The transmission oil plug is detachably connected with the housing of the transmission through the threads of the main body. The present application can conveniently and timely clean the iron filings in the transmission lubricating oil.

Description

[0001] This application is a divisional application of the invention patent application filed on May 24, 2022, entitled "Transmission Oil Plug, Transmission and New Energy Vehicle", with application number 202210568811.6. Technical Field

[0002] This invention relates to the field of transmission technology, and more particularly to a removable transmission oil plug, a transmission, and a new energy vehicle. Background Technology

[0003] The transmission is a crucial part of a vehicle's powertrain. To ensure proper transmission operation, the lubricating oil inside the transmission needs to maintain a high level of cleanliness. However, after a period of operation, a large amount of iron filings accumulate inside the transmission housing. These iron filings negatively impact the operation of the transmission bearings, the sealing of the oil seal lips, and the contact of the gear teeth. To address this, existing technologies have proposed installing magnets on the transmission housing to attract iron filings from the transmission lubricating oil. For example, patent CN107939949A features a protrusion on the main transmission housing, into which a magnet is installed. However, because the attracted iron filings are located within the transmission housing, they cannot be promptly removed. Patent CN202301852U proposes mounting the magnets on a support plate, which is then detachably fixed to the front housing of the transmission, connecting the magnets to the transmission's interior. This technology allows the support plate to be removed from the transmission housing for cleaning the iron filings from the magnets. However, the structure of this patent not only increases the load-bearing plate, but also requires the addition of magnets to the transmission housing to connect with the inside of the transmission. Therefore, it not only changes the original structure of the reducer housing, making it more complicated, but also damages the seal of the reducer. Summary of the Invention

[0004] In view of this, embodiments of the present invention provide a detachable transmission oil plug, a transmission, and a new energy vehicle to solve the technical problem that existing reducers cannot conveniently remove iron filings inside the transmission without altering the original transmission housing structure and affecting the reducer's sealing performance.

[0005] The technical solution adopted in this invention is:

[0006] In a first aspect, the present invention provides a removable transmission oil plug, comprising: a body and a magnetic component, wherein the body is provided with a connection structure for detachably connecting to a transmission housing, and a mounting structure for mounting the magnetic component is provided at one end of the body facing the interior of the transmission; the magnetic component is mounted on the end of the body facing the interior of the transmission via the mounting structure, the magnetic component is used to attract iron filings in the transmission lubricating oil, and the outer surface of the body is provided with threads, wherein the transmission oil plug is detachably connected to the transmission housing via the threads of the body.

[0007] Preferably, the mounting structure is a groove formed by the recess in the end face of the body facing the interior of the transmission in a direction away from the interior of the transmission.

[0008] Preferably, the magnetic element is spherical;

[0009] Preferably, the mounting structure includes a shielding portion, the center of mass of the magnetic component is the center of the sphere of the magnetic component, the magnetic component is rotatably connected to the shielding portion, the axis of rotation of the magnetic component passes through the center of the sphere of the magnetic component and is perpendicular to the direction of gravity, the magnetic component is divided into a first part and a second part by a first reference plane, the first part is shielded by the shielding portion, and the first reference plane is a plane that passes through the axis of rotation and has an angle of 8 degrees to 20 degrees with the horizontal plane.

[0010] Preferably, the mounting structure further includes a rotating shaft, the magnetic component is provided with a through hole passing through the center of the ball, the rotating shaft passes through the through hole and is interference-fitted with the through hole, the shielding part is provided with a first mounting hole and a second mounting hole, the axes of the first mounting hole and the second mounting hole coincide, the two ends of the rotating shaft are respectively inserted into the first mounting hole and the second mounting hole, and the rotating shaft rotates along the first mounting hole and the second mounting hole.

[0011] Preferably, the first mounting hole and the second mounting hole are respectively fitted with bearings, and the two ends of the rotating shaft are respectively installed in the inner ring of the bearing.

[0012] Preferably, the mounting structure includes a cavity formed in the main body, a guide groove with a vertical guiding direction disposed on the inner wall of the cavity, and a slider that cooperates with the guide groove. The slider slides along the guide groove. The magnetic component includes multiple magnetic plates that are rotatably connected in sequence. The two outermost magnetic plates of the magnetic component are a first magnetic plate and a second magnetic plate, respectively. One end of the first and second magnetic plates is rotatably connected to the adjacent magnetic plate, and the other end is rotatably connected to the slider. The slider and the guide groove have a coefficient of friction that can overcome the weight of the magnetic component and allow the magnetic component to slide downward when the mass of iron filings adsorbed by the magnetic component exceeds a preset value. The magnetic component can be stored in the cavity after folding. A limiting part is provided at the end of the guide groove facing the inside of the gearbox. The limiting part is used to limit the position of the slider sliding down.

[0013] Preferably, the guide groove includes a first guide groove and a second guide groove, and the slider includes a first sliding part, a second sliding part, and a connecting part. At least a portion of the first sliding part is located in the first guide groove, and at least a portion of the second sliding part is located in the second guide groove. The first sliding part and the second sliding part are connected by the connecting part. The first magnetic plate or the second magnetic plate is rotatably connected to the connecting part.

[0014] In a second aspect, the present invention also provides a transmission, including the transmission oil plug described in the first aspect, wherein the transmission is provided with a drain port and / or an oil filling port, and the removable transmission oil plug is installed at the drain port and / or the oil filling port of the transmission.

[0015] Thirdly, the present invention provides a new energy vehicle, including the removable transmission oil plug as described in the first aspect, or the transmission as described in the second aspect.

[0016] Beneficial Effects: The transmission oil plug of this invention has a mounting structure for installing a magnetic component at one end of its main body facing the inside of the transmission. This mounting structure allows the magnetic component to be installed at one end of the plug body. When the plug body is fitted onto the fill or drain hole, the magnetic component faces the inside of the transmission, allowing it to attract iron filings from the transmission's lubricating oil using its magnetic field. When cleaning the iron filings, simply remove the plug from the reducer housing, completely remove the iron filings, and then reinstall the plug onto the fill or drain hole. Furthermore, the iron filings can be cleaned conveniently when removing the plug during transmission maintenance, making it extremely easy to use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, and these are all within the protection scope of the present invention.

[0018] Figure 1 This is a cross-sectional view of the transmission oil plug of the present invention;

[0019] Figure 2 This is a schematic diagram of the transmission and drain plug of the present invention;

[0020] Figure 3 This is a schematic diagram of the transmission and main oil filler plug of the present invention;

[0021] Figure 4 This is a schematic diagram of the transmission oil plug using a rotatable spherical magnetic component according to the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the magnetic component of the present invention housed in the main body cavity;

[0023] Figure 6 This is a schematic diagram of the structure of the magnetic component of the present invention after it has been fully unfolded.

[0024] Figure 7 This is a schematic diagram of the structure of the groove and slider of the present invention;

[0025] Parts and their numbers in the diagram:

[0026] Main body 111, magnetic component 112, connecting structure 113, mounting structure 114, drain plug 110, fill plug 120, transmission housing 20, shielding part 30, first reference plane 40, first part 51, second part 52, magnetic plate 53, first magnetic plate 531, second magnetic plate 532, chamber 60, guide groove 61, first guide groove 611, second guide groove 612, slider 62, first sliding part 621, second sliding part 622, connecting part 623, horizontal plane 70. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, the element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Where there is no conflict, embodiments of the present invention and the various features thereof can be combined with each other, all of which are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figure 1 As shown, this embodiment provides a transmission oil plug, which includes a main body 111 and a magnetic component 112. The main body 111 is provided with a connection structure 113 for detachable connection with the transmission housing 20. The end of the main body 111 facing the inside of the transmission is provided with a mounting structure 114 for mounting the magnetic component 112. The magnetic component 112 is mounted on the end of the main body 111 facing the inside of the transmission through the mounting structure 114. The magnetic component 112 is used to adsorb iron filings in the transmission lubricating oil.

[0030] Magnetic component 112 can be made of a magnet. Transmission lubricant is crucial for the transmission. Its functions include reducing friction, reducing wear, lowering operating temperature, resisting high and low temperatures, corrosion prevention, rust prevention, cleaning, power transmission, shock absorption, sealing, heat conduction, insulation, etc. Transmission lubricant consists of base oil and various additives. Base oil is refined from paraffinic crude oil, commonly known as mineral oil (approximately 90%). However, due to the inherent limitations of base oil, various types of additives must be added to meet the requirements of various operating conditions (approximately 10%) to ensure normal transmission operation. The additives in transmission lubricant are diverse, including: antioxidants, detergents, dispersants, pour point inhibitors, viscosity index improvers, antifoaming agents, friction modifiers, metal deactivators, deemulsifiers, corrosion inhibitors, extreme pressure additives, etc. These additives are designed to enhance certain properties of the base oil, imparting characteristics not naturally present in the base oil. Therefore, transmission lubricants containing various additives are common, each with its own strengths and weaknesses, resulting in varying performance levels. The quality of transmission fluid is mainly reflected in its physical properties, such as viscosity, viscosity index, flash point, and pour point.

[0031] In this embodiment, the transmission oil plug can be either the fill plug 120 or the drain plug 110.

[0032] The detachable connection structure 113 includes, but is not limited to, snap-fit, plug-in, and threaded connections. When the oil plug is fitted onto the oil inlet or drain hole of the transmission housing 20, it blocks the oil inlet and drain holes, preventing leakage of lubricating oil from these locations. At this time, one end of the oil plug is inside the transmission, while the other end protrudes outside for easy removal. Because this embodiment provides a mounting structure 114 for mounting a magnetic component 112 at the end of the oil plug body 111 facing the transmission interior, the magnetic component 112 can be mounted on one end of the oil plug body 111 using this mounting structure 114. When the oil plug body 111 is fitted onto the oil inlet or drain hole, the magnetic component 112 faces directly into the transmission interior. This allows the magnetic component 112 to attract iron filings from the lubricating oil inside the transmission using the magnetic force of its generated magnetic field. When it is necessary to clean the iron filings adsorbed on the oil plug, simply remove the oil plug from the reducer housing, completely remove the iron filings, and then reassemble the oil plug into the filler or drain port. Alternatively, the oil plug with iron filings can be removed from the reducer housing and replaced with a new one. Since the drain plug 110 is removed from the transmission housing 20 during transmission maintenance, the oil plug in this embodiment allows for convenient cleaning of the iron filings adsorbed on it during maintenance, eliminating the need for separate removal of the plug for cleaning.

[0033] In this embodiment, the transmission oil plug can be either an oil filler plug 120 or an oil drain plug 110. If it is an oil drain plug 110, the oil drain plug 110 is installed at the oil drain hole at the bottom of the transmission, with the end on which the magnetic element 112 is installed facing the inside of the transmission. In this way, when iron filings mixed in the lubricating oil flow around the reducer oil plug, the magnetic element 112 on the reducer oil plug will attract the iron filings.

[0034] If it is an oil filler plug 120, install the oil filler plug 120 at the oil filler hole position on the top of the transmission, with the end with the magnetic element 112 facing the inside of the transmission. In this way, when the lubricating oil in the transmission splashes around the oil filler plug 120, the magnetic element 112 on the oil filler plug 120 will attract the iron filings in the gear oil.

[0035] In one embodiment, the mounting structure 114 is a groove formed by the recess of the end face of the main body 111 facing the interior of the transmission away from the interior of the transmission. In this embodiment, a groove is machined at one end of the transmission oil plug, and the magnetic component 112 is then installed in this groove. Using the aforementioned groove mounting structure 114, the magnetic component 112 can be conveniently and accurately positioned using the inner wall of the groove. Because the groove is recessed to a certain depth, the length of the portion of the magnetic component 112 exposed outside the transmission oil plug can be reduced, resulting in a smaller change to the overall size of the transmission oil plug and less impact on the original transmission design. This allows the transmission oil plug in this embodiment to be used without changing or with only slight changes to the original transmission design. In another embodiment, the surface of the magnetic component 112 facing the inner wall of the transmission is flush with the end face of the main body 111 facing the inner wall of the transmission. Using the aforementioned method, the magnetic component 112 and the main body 111 of the transmission oil plug can be installed together as a single main body 111 without altering the original external dimensions of the transmission oil plug, thus minimizing the impact on the original transmission design.

[0036] In this embodiment, the groove for mounting the magnetic component 112 is a cold-forged groove, that is, a groove processed by cold forging. In this embodiment, the aforementioned groove can be further cold-forged from the gearbox oil plug formed by cold forging of 35 steel or 20 steel, which can accurately process the groove and significantly improve processing efficiency.

[0037] In this embodiment, the magnetic component 112 is riveted to the edge of the groove, thereby assembling the magnetic component 112 and the main body 111 of the transmission oil plug together. In this embodiment, during assembly, the magnetic component 112 can be first inserted into the groove, and then the magnetic component 112 can be quickly and reliably fixed to the end of the transmission oil plug by riveting the groove and the edge of the magnetic component 112.

[0038] In one embodiment, the outer surface of the main body 111 is provided with threads, and the transmission oil plug is detachably connected to the transmission housing through the threads of the main body 111. This ensures reliable sealing of the oil filling or draining hole by the transmission oil plug and facilitates the removal of the transmission oil plug.

[0039] In this embodiment, after the groove is machined, the thread is machined on the outer peripheral wall of the main body 111 of the transmission oil plug, and a matching thread is machined at the position of the oil filling hole or oil drain hole of the transmission housing 20.

[0040] In this embodiment, the groove is a cylindrical groove, and the magnetic component 112 is a cylinder that matches the shape of the inner wall of the groove. This embodiment uses a cylindrical magnetic component 112 installed in a cylindrical groove, which increases the surface area of ​​the magnetic component 112 for attracting iron filings without significantly altering the size and structure of the transmission oil plug. The axis of the magnetic component 112 can be parallel to the axis of the oil plug.

[0041] In one embodiment, the magnetic component 112 includes a mounting portion and an adsorption portion. The mounting portion is mounted on the main body 111 via the mounting structure 114. The mounting portion can be a groove formed by recessing the end face of the main body 111 towards the inside of the transmission away from the transmission interior. The outer wall of the mounting portion matches the shape of the inner wall of the groove. In this embodiment, a groove is machined at one end of the transmission oil plug, and the mounting portion of the magnetic component 112 is then installed in this groove. Using the aforementioned groove mounting structure 114, the inner wall of the groove can be used to conveniently and accurately limit the mounting portion of the magnetic component 112. Because the groove is recessed to a certain depth, the length of the portion of the magnetic component 112 exposed outside the transmission oil plug can be reduced, resulting in a smaller change to the overall size of the transmission oil plug and less impact on the original transmission design. This allows the transmission oil plug in this embodiment to be used without changing or with only slight changes to the original transmission design. After the mounting portion of the magnetic component 112 is installed in the groove, the mounting portion faces the groove, while the adsorption portion faces the inside of the transmission. The magnetic component 112 has a hemispherical adsorption part. Since the adsorption part faces the inside of the transmission, and the hemispherical adsorption part has a larger surface area, the structure described above can adsorb more iron filings in one cleaning cycle.

[0042] In this embodiment, the magnetic component 112 can also be made into a spherical shape, and the corresponding groove on the main body 111 can also be made into a spherical groove. In this way, when the magnetic component 112 is installed in the groove, the side of the magnetic component 112 facing the inside of the transmission is also a hemisphere.

[0043] While using the aforementioned hemispherical or spherical magnetic component 112 increases the surface area of ​​the magnetic component 112 that can adsorb iron filings to some extent, only the portion of the magnetic component 112 facing the transmission is used to adsorb iron filings, thus the amount of iron filings adsorbed remains limited. Therefore, this embodiment provides another type of magnetic component 112 and a corresponding mounting structure 114.

[0044] like Figure 4As shown, in this embodiment, the magnetic component 112 is spherical, the mounting structure 114 includes a shielding portion 30, the center of mass of the magnetic component 112 is the center of the sphere of the magnetic component 112, the magnetic component 112 is rotatably connected to the shielding portion 30, and its axis of rotation passes through the center of the sphere of the magnetic component 112 and is perpendicular to the direction of gravity. The magnetic component 112 is divided into a first part 51 and a second part 52 by a first reference plane 40. The first part 51 is shielded by the shielding portion 30. The first reference plane 40 is the angle between the axis of rotation and the horizontal plane 70. Figure 4 Angle A in the plane is a plane ranging from 8 degrees to 20 degrees.

[0045] In this embodiment, the magnetic component 112 and the main body 111 are rotatably connected, allowing the magnetic component 112 to rotate. When the magnetic component 112 rotates to different angles, the part of the magnetic component 112 facing the inside of the transmission also changes. This allows the magnetic component 112 to be fully utilized to adsorb iron filings from the transmission lubricating oil by rotating its various parts. In this embodiment, the magnetic component 112 is spherical, and the axis of rotation passes through the center of the sphere, allowing the magnetic component 112 to rotate around the axis passing through its center. Since the center of mass of the magnetic component 112 is the center of its sphere, the torque generated by the gravity of the magnetic component 112 on the axis of rotation is zero. Therefore, when the magnetic component 112 is not adsorbing iron filings, it is in a relatively stable state. However, when iron filings are adsorbed onto the magnetic component 112, the center of mass of the entire structure formed by the magnetic component 112 and the iron filings is not necessarily still located at the center of the sphere, resulting in an eccentricity. When the center of mass is not on the axis of rotation, the iron filings will generate a torque relative to the axis of rotation, causing the magnetic component 112 that has attracted the iron filings to rotate around the axis.

[0046] In this embodiment, the shielding part 30 shields the magnetic component 112 at the center of the sphere. The shielded part of the magnetic component 112 cannot directly attract iron filings, while the unshielded part of the magnetic component 112 can attract iron filings. In this embodiment, the magnetic component 112 is divided into two parts by the first reference plane 40, so that one part is not shielded by the shielding part 30 and can attract iron filings in the transmission lubricating oil, while the other part is shielded and cannot attract iron filings in the transmission lubricating oil. Since the first reference plane 40, which is the decomposition plane between the unshielded part 30 and the shielded part 30, is a plane that passes through the axis of rotation and has an angle of 8 to 20 degrees with the horizontal plane 70, the center of mass of the part of the magnetic component 112 that can attract iron filings does not pass through the axis of rotation, but is biased to the left side of the magnetic component 112 in the figure. Therefore, after the unshielded part 30 attracts iron filings, the center of mass of the magnetic component 112 and the attracted iron filings as a whole does not pass through the axis of rotation, but is biased to one side. The iron filings attracted by the magnetic component 112 will generate a torque relative to the axis, causing the magnetic component 112 to rotate around the axis. This embodiment employs the aforementioned asymmetrical shielding method, causing the center of mass of the entire assembly of the magnetic component 112 and the iron filings to deviate from the axis of rotation of the magnetic component 112. This allows the magnetic component 112 to rotate automatically while continuously attracting iron filings without external intervention from the transmission. This allows the orientation of the magnetic component 112 towards the inside of the transmission to be changed, enabling the use of more of the magnetic component 112 to attract iron filings and increasing the amount of iron filings that can be attracted within a single cleaning cycle.

[0047] In this embodiment, the mounting structure 114 further includes a rotating shaft. The magnetic component 112 has a through hole passing through the center of the ball. The rotating shaft passes through the through hole and is interference-fitted with the through hole. The shielding part 30 has a first mounting hole and a second mounting hole, the axes of which coincide. The two ends of the rotating shaft are respectively inserted into the first mounting hole and the second mounting hole, and the rotating shaft rotates within the first mounting hole and the second mounting hole. To better enable rotation relative to the two mounting holes, bearings can be installed in the two mounting holes respectively, and then the two ends of the rotating shaft can be installed in the inner rings of the bearings respectively.

[0048] In this embodiment, the rotating shaft can also be fixedly connected to the shielding part 30, so that the through hole of the magnetic component 112 can rotate around the rotating shaft.

[0049] like Figure 5 and Figure 6As shown, in another embodiment, the mounting structure 114 in this embodiment includes a cavity 60 formed in the main body 111, a guide groove 61 with a vertical guiding direction disposed on the inner wall of the cavity 60, and a slider 62 that cooperates with the guide groove 61. The slider 62 slides along the guide groove 61. The magnetic component 112 includes multiple magnetic plates 53, which are rotatably connected in sequence. The two outermost magnetic plates 53 of the magnetic component 112 are a first magnetic plate 531 and a second magnetic plate 532, respectively. One end of the first magnetic plate 531 and the second magnetic plate 532 is rotatably connected to the adjacent magnetic plate 53, and the other end is rotatably connected to the slider 62. The slider 62 and the guide groove 61 have a coefficient of friction that can overcome the weight of the magnetic component 112 and allow the magnetic component 112 to slide downward when the mass of iron filings adsorbed by the magnetic component 112 exceeds a preset value. A limiting part is provided at the end of the guide groove 61 facing the inside of the gearbox. The limiting part is used to limit the position of the slider 62 sliding down.

[0050] like Figure 5 and Figure 6 As shown, since the magnetic component 112 in this embodiment is composed of multiple magnetic plates 53, and the magnetic plates 53 are sequentially rotatably connected, the magnetic component 112 can be folded by rotating the magnetic plates 53. Figure 5 As shown, in this embodiment, the magnetic component 112 is folded up before the transmission oil plug is installed onto the transmission housing 20. The slider 62 and the guide groove 61 have a certain coefficient of friction, thus creating friction between them. When the transmission oil plug is first installed onto the transmission housing 20, and the magnetic component 112 has not yet attracted iron filings or has only attracted a small amount, the weight of the magnetic component 112 is less than the maximum static friction between the slider 62 and the guide groove 61. At this point, the magnetic component 112 cannot overcome the friction between the slider 62 and the guide groove 61 to move the slider 62 downwards. After the transmission oil plug is installed onto the transmission housing 20, the magnetic component 112 continuously attracts iron filings, causing the overall weight of the magnetic component 112 and the attracted iron filings to continuously increase until the overall weight of the magnetic component 112 and the attracted iron filings exceeds the friction between the slider 62 and the guide groove 61. At this point, the magnetic component 112 moves the slider 62 downwards together. When the magnetic component 112 and the slider 62 slide down to the end of the main body 111 facing the inside of the gearbox, they are stopped by the limiting part and stop sliding down. At this time, the magnetic component 112 is completely exposed outside the main body 111, and the area of ​​the magnetic component 112 that can attract iron filings also increases significantly, so more iron filings can be attracted. Figure 6As shown, when the magnetic component 112 attracts more and more iron filings, the magnetic plates 53 rotate relative to each other under the gravity of the iron filings, thereby causing the magnetic component 112 to unfold. Since the magnetic component 112 has now slid down to the end of the main body 111, it is no longer restricted by the main body 111 of the transmission oil plug and can be fully unfolded. Its unfolded volume can be much larger than its volume when housed in the chamber 60, and it can form more surface area to attract iron filings in the lubricating oil, thus attracting more iron filings in one cleaning cycle. When the transmission oil plug is removed from the transmission housing 20, the magnetic component 112 folds back under the action of the inner wall of the oil hole, thus being carried out of the transmission along with the transmission oil plug.

[0051] In this embodiment, the cleaning cycle refers to the time period from when the iron filings adsorbed from the transmission oil plug are cleaned and installed on the transmission housing 20 until the transmission oil plug is removed again for cleaning.

[0052] In this embodiment, the transmission oil plug can have its magnetic component 112 folded up and stored in the cavity 60 of the main body 111. This preserves the original dimensions of the transmission oil plug and allows for quick and easy insertion into the oil filler hole. Once the end of the transmission oil plug with the magnetic component 112 is inserted into the transmission, the magnetic component 112 continuously attracts iron filings from the lubricating oil. As the amount of iron filings attracted by the magnetic component 112 increases, the magnetic component 112 becomes heavier until its total weight exceeds the friction between the slider 62 and the guide groove 61. At this point, the magnetic component 112 is completely exposed outside the main body 111. As the amount of iron filings attracted by the magnetic component 112 further increases, the magnetic component 112 gradually unfolds automatically under its own weight and the weight of the iron filings. The larger the iron filings attracted by the magnetic component 112, the more fully it unfolds. Since the magnetic component 112 has now slid down to the position where the main body 111 is fully exposed, the unfolding process of the magnetic component 112 is not restricted by the main body 111. Its unfolded dimensions can exceed those of the main body 111, thus creating a larger effective area for adsorbing iron filings. Using the aforementioned structure for the transmission oil plug affects its external dimensions, and the magnetic component 112 can automatically unfold during the adsorption of iron filings without requiring external operation from the transmission. Therefore, it does not affect the sealing performance of the transmission oil plug and can significantly increase the amount of iron filings adsorbed by the magnetic component 112.

[0053] like Figure 7As shown, in one embodiment, the guide groove 61 includes a first guide groove 611 and a second guide groove 612. The slider 62 includes a first sliding part 621, a second sliding part 622, and a connecting part 623. At least a portion of the first sliding part 621 is located in the first guide groove 611, and at least a portion of the second sliding part 622 is located in the second guide groove 612. The first sliding part 621 and the second sliding part 622 are connected by the connecting part 623. The first magnetic plate 531 or the second magnetic plate 532 is rotatably connected to the connecting part 623. This embodiment, using the aforementioned structure, allows the magnetic component 112 to slide accurately in the vertical direction and rotate flexibly.

[0054] Example 2

[0055] This embodiment provides a transmission, which includes the transmission oil plug described in Embodiment 1. The transmission is provided with an oil inlet for injecting lubricating oil into the transmission and / or an oil drain outlet for draining lubricating oil from the transmission. The transmission oil plug is installed at the oil drain outlet and / or the oil inlet of the transmission.

[0056] That is, the oil plug installed on the transmission in this embodiment can be either the oil filler plug 120 installed at the oil filler hole or the oil drain plug 110 installed at the oil drain hole.

[0057] Since the transmission in this embodiment uses the oil plug from Embodiment 1, the magnetic component 112 can be mounted on one end of the oil plug body 111 using the mounting structure 114 on the oil plug body 111. When the oil plug body 111 is mounted on the oil filler or drain hole, the magnetic component 112 faces the inside of the transmission. This allows the magnetic component 112 to attract iron filings from the transmission's internal lubricating oil using the magnetic force of its generated magnetic field. When it is necessary to clean the iron filings attracted to the oil plug, simply remove the oil plug from the reducer housing, completely remove the iron filings, and then reassemble the oil plug into the oil filler or drain hole position. Furthermore, the iron filings attracted to the transmission oil plug can be cleaned conveniently when the oil plug is removed for transmission maintenance, making it very easy to use.

[0058] Example 3

[0059] This embodiment provides a new energy vehicle, which includes the transmission oil plug described in Embodiment 1, or the transmission described in Embodiment 2.

[0060] Since the transmission in this embodiment uses the oil plug from Embodiment 1 or the transmission described in Embodiment 2, the magnetic element 112 can be installed at one end of the oil plug body 111 using the mounting structure 114 on the oil plug body 111. When the oil plug body 111 is mounted on the oil filler or drain hole, the magnetic element 112 faces the inside of the transmission. This allows the magnetic element 112 to attract iron filings from the lubricating oil inside the transmission using the magnetic force of its generated magnetic field. When it is necessary to clean the iron filings attracted to the oil plug, simply remove the oil plug from the reducer housing, completely remove the iron filings, and then reassemble the oil plug into the oil filler or drain hole position. Furthermore, the iron filings can be cleaned simultaneously when removing the oil plug during transmission maintenance, making it very convenient to use.

[0061] The above description is merely a specific embodiment of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A removable transmission fluid plug, characterized in that, include: The main body and the magnetic component are provided. The main body is provided with a connection structure for detachable connection with the transmission housing. The end of the main body facing the inside of the transmission is provided with a mounting structure for mounting the magnetic component. The magnetic component is mounted on the end of the main body facing the inside of the transmission through the mounting structure. The magnetic component is used to attract iron filings in the transmission lubricating oil. The outer surface of the main body is provided with threads. The transmission oil plug is detachably connected to the transmission housing through the threads of the main body. The magnetic component is spherical; The mounting structure includes a shielding part, the center of mass of the magnetic component is the center of the sphere of the magnetic component, the magnetic component is rotatably connected to the shielding part, the axis of rotation of the magnetic component passes through the center of the sphere of the magnetic component and is perpendicular to the direction of gravity, the magnetic component is divided into a first part and a second part by a first reference plane, the first part is shielded by the shielding part, and the first reference plane is a plane that passes through the axis of rotation and has an angle of 8 degrees to 20 degrees with the horizontal plane.

2. The removable transmission fluid plug according to claim 1, characterized in that, The mounting structure is a groove formed by recessing the end face of the main body toward the interior of the transmission in a direction away from the interior of the transmission.

3. The removable transmission fluid plug according to claim 1, characterized in that, The mounting structure also includes a rotating shaft. The magnetic component has a through hole passing through the center of the ball. The rotating shaft passes through the through hole and is interference-fitted with the through hole. The shielding part has a first mounting hole and a second mounting hole. The axes of the first mounting hole and the second mounting hole coincide. The two ends of the rotating shaft are respectively inserted into the first mounting hole and the second mounting hole. The rotating shaft rotates along the first mounting hole and the second mounting hole.

4. The removable transmission fluid plug according to claim 3, characterized in that, Bearings are installed in the first mounting hole and the second mounting hole respectively, and the two ends of the rotating shaft are respectively installed in the inner ring of the bearing.

5. A transmission, characterized in that, The transmission includes a removable transmission fluid plug as described in any one of claims 1 to 4, wherein the transmission is provided with a drain port and / or an fill port, and the removable transmission fluid plug is installed at the drain port and / or the fill port of the transmission.

6. A new energy vehicle, characterized in that, Includes the removable transmission oil plug as described in any one of claims 1 to 4, or the transmission as described in claim 5.

Images