Oil-cooled wheel motor

Abstract

The utility model relates to the technical field of wheel hub motor discloses oil -cooled wheel hub motor, including motor main part, the one end of motor main part is provided with output, the outer wall of motor main part is provided with oil injection pipe, the inside of oil injection pipe is provided with the restriction subassembly, the outer wall of oil injection pipe is fixedly connected with pressing subassembly, the restriction subassembly includes sealed post, the outer wall of sealed post sets up in the inside of oil injection pipe, the inside of oil injection pipe is provided with the oil injection port, the outer wall of sealed post is fixedly connected with the connecting plate of annular array, the outer wall of connecting plate is fixedly connected in the inside of oil injection pipe. In the utility model, through pressing the drive of connecting column, limit disc and cooperate spring, realize the one -way switch of oil injection port, prevent the wheel hub motor from generating backflow in use, solved when pressure fluctuation, oil liquid will from motor inside backflow, lead to the oil liquid amount in oil circuit is unstable, influence the subsequent cooling effect problem, improved oil liquid stability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wheel hub motor, especially oil cooling type wheel hub motor. BACKGROUND

[0002] The oil cooling type wheel hub motor occupies an important position in the field of electric vehicles, which effectively dissipates the heat generated in the operation process through the circulation of cooling oil in the motor interior, thereby guaranteeing the stable and efficient operation of the motor. With the continuous development of electric vehicle technology, the performance and reliability requirements of the oil cooling type wheel hub motor are increasingly stringent. As the key part of the oil cooling system interacting with the outside world, the structure design of the oil filling port is directly related to the stability and safety of the entire motor cooling system. During the long-term use of the motor, whether it is the pressure fluctuation during normal operation or the pressure change caused by external environmental changes or working condition conversion, the oil filling port structure is required to respond accurately to maintain the normal oil circulation and sealing performance of the oil cooling system.

[0003] The traditional oil filling port of the oil cooling type wheel hub motor often adopts a simple mechanical plugging method. Generally, after the oil filling is completed, a plug made of metal or rubber is directly inserted into the oil filling port. The sealing principle is mainly based on the friction between the plug and the inner wall of the oil filling port and the shape design of the plug to block the oil flow. Some add some sealing washers around the plug to enhance the sealing effect, and some use a specially designed cover screwed on the oil filling port through threads, relying on the tight engagement of the threads and the sealing material at the contact part of the cover and the oil filling port to prevent oil leakage. In this structure, the flow direction of the oil lacks an active control mechanism and completely relies on the tightness of the external plugging.

[0004] However, this traditional mechanical structure of the oil filling port has obvious drawbacks. Since there is no special one-way control device, when the system pressure fluctuates during the operation of the motor, for example, the pressure suddenly changes due to current impact during the starting moment of the motor, or the pressure is unbalanced when switching between high-speed operation and low-speed operation, the oil in the motor interior is prone to backflow from the oil filling port. This backflow phenomenon not only causes unstable oil quantity in the oil circuit, but also damages the designed oil circulation path and heat dissipation effect, causing local temperature rise of the motor, affecting the overall performance and service life of the motor, and in severe cases, it may even cause motor failure due to insufficient heat dissipation, affecting the normal driving of the vehicle, and thus the oil cooling type wheel hub motor is proposed to solve the above problems. INVENTION CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides an oil cooling type wheel hub motor, which aims to improve the problem that in the prior art, when the system pressure fluctuates, the oil will backflow from the motor interior to the oil filling port, causing unstable oil quantity in the oil circuit and affecting the subsequent cooling effect.

[0006] In order to achieve the above object, the utility model adopts the following technical scheme:

[0007] The oil-cooled wheel hub motor, including motor main body, the motor main body one end is provided with output, the motor main body outer wall is provided with oil injection pipe, the oil injection pipe inside is provided with the restriction component, the oil injection pipe outer wall is fixedly connected with press assembly;

[0008] The restriction component includes airtight column, the airtight column outer wall is arranged in the oil injection pipe, the oil injection pipe is internally provided with an oil inlet, the airtight column outer wall is fixedly connected with the annular array connecting plate, the connecting plate outer wall is fixedly connected in the oil injection pipe, the airtight column is slidably connected with a restriction disc, the airtight column is provided with spring one, the spring one bottom is fixedly connected in the airtight column inner wall, the spring one top is fixedly connected in the restriction disc bottom, the restriction disc top is fixedly connected with connecting column, the connecting column top is fixedly connected with rubber plug, the rubber plug outer wall is slidably connected in the oil inlet inside;

[0009] As a further description of the above technical scheme:

[0010] The press assembly includes a fixed housing, and the fixed housing is fixedly connected to the outer wall of the oil injection pipe.

[0011] As a further description of the above technical scheme:

[0012] The fixed housing is fixedly connected with a fixed column, and the fixed column is slidably connected with a lifting plate.

[0013] As a further description of the above technical scheme:

[0014] The lifting plate is internally provided with a restriction groove, and the lifting plate top is fixedly connected with lifting column.

[0015] As a further description of the above technical scheme:

[0016] The lifting column top is fixedly connected with press column, and the press column is arranged on the rubber plug top.

[0017] As a further description of the above technical scheme:

[0018] The fixed housing outer wall is rotatably connected with a rotating rod, the rotating rod outer wall is fixedly connected with a sliding column, and the sliding column outer wall is slidably connected in the restriction groove.

[0019] As a further description of the above technical scheme:

[0020] The fixed column outer wall is provided with spring two, the spring two top is fixedly connected in the lifting plate bottom, and the spring two bottom is fixedly connected in the fixed housing inner wall.

[0021] The utility model has the advantages of the following:

[0022] 1. In the utility model, the rubber plug realizes its moving function by pressing, drives the connecting column and the limiting disc by pressing, and cooperates with the spring, realizes the one-way switch of the oil filling port, thereby one-way closes the oil filling port, prevents the backflow of the in-wheel motor in use, solves the problem that when the system pressure fluctuates, the oil will flow back from the motor to the oil filling port, causes the oil in the oil circuit to be unstable, affects the subsequent cooling effect, and improves the oil stability.

[0023] 2. In the utility model, the pressing column realizes its lifting function by pressing, drives the lifting plate and the slide column by pressing, and cooperates with the spring two, realizes the lifting of the pressing column in the oil filling port, thereby conveniently automatically presses the oil filling port, keeps it in working condition, solves the problem that when the inside is refueled, external tools are needed to press the rubber plug continuously, and improves the pressing property of the device. DRAWINGS

[0024] Figure 1 The utility model provides a three-dimensional schematic view of the oil-cooled in-wheel motor;

[0025] Figure 2 The utility model provides the structure schematic view of the oil filling pipe of the oil-cooled in-wheel motor;

[0026] Figure 3 The utility model provides the structure schematic view of the fixed shell of the oil-cooled in-wheel motor.

[0027] LEGEND:

[0028] 1, motor main body;2, output end;3, oil filling pipe;4, fixed shell;5, lifting column;6, pressing column;7, rubber plug;8, connecting column;9, limiting disc;10, spring one;11, connecting plate;12, airtight column;13, oil filling port;14, rotating rod;15, lifting plate;16, limiting groove;17, fixed column;18, slide column;19, spring two. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0030] REFERENCE Figure 1And Figure 3 The utility model provides an embodiment: oil cooling type wheel hub motor, the motor main part 1 one end is provided with the output 2, this output 2 usually adopts high strength alloy steel material quality to create, has outstanding wear resistance and impact resistance, its surface is after fine heat treatment process, further improve the hardness and toughness, to ensure that can stably and efficiently transmit the power that the motor generates to the transmission system of vehicle, to drive vehicle operation, the motor main part 1 outer wall is provided with oil injection pipe 3, oil injection pipe 3 adopts the engineering plastics of special -purpose high temperature resistance, corrosion resistance and is made, has good insulating property and chemical stability, its pipe wall thickness is after accurate calculation and design, can guarantee enough intensity to bear the pressure of internal oil, also can not because over heavy and increase the overall load of motor, oil injection pipe 3 is internally provided with limit component, oil injection pipe 3 outer wall is fixedly connected with pressing assembly;

[0031] Limit component includes airtight column 12, the outer wall of airtight column 12 is installed in oil injection pipe 3 inside, its material selects high-quality stainless steel, has excellent rustproof and pressure resistance, airtight column 12 outer wall is arranged in oil injection pipe 3 inside, oil injection pipe 3 inside is provided with oil injection port 13, airtight column 12 outer wall is fixedly connected with the connecting plate 11 of annular array, the connecting plate 11 outer wall is fixedly connected in oil injection pipe 3 inside, airtight column 12 inside is slidably connected with limit disc 9, limit disc 9 adopts engineering nylon material to make, has good self-lubricating and wear resistance, can smoothly slide in airtight column 12, airtight column 12 inside is provided with spring one 10, spring one 10 bottom is fixedly connected in airtight column 12 inner wall, spring one 10 top is fixedly connected in limit disc 9 bottom, limit disc 9 top is fixedly connected with connecting column 8, connecting column 8 top is fixedly connected with rubber plug 7, rubber plug 7 is made of oil-resistant rubber, its outer wall can be closely slidably connected in oil injection port 13 inside, effectively prevent oil leakage and backflow, ensure the stability and reliability of oil cooling system, rubber plug 7 outer wall is slidably connected in oil injection port 13 inside.

[0032] Specifically, when oiling oil cooling type wheel hub motor, need to implement the pressing action of rubber plug 7, in this process, rubber plug 7 smoothly slides from oil injection port 13 inside, at the same time rubber plug 7 is closely connected with connecting column 8, drives connecting column 8 to descend along, connecting column 8 smoothly slides in the space defined in airtight column 12, this sliding action will generate compression force to spring one 10, make spring one 10 gradually contract and deform, thereby make room for oiling, to smoothly carry out oiling operation inside, when oiling operation is completed, spring one 10 restores rapidly by the elastic restoring force of itself, and then push rubber plug 7 to rebound to the initial position, close oil injection port 13 tightly, ensure that oil does not leak, effectively maintain the stability and sealing property of oil cooling system.

[0033] Refer to Figure 1 -Figure 3 The pressing assembly comprises a fixed shell 4 made of solid engineering plastic material by injection molding process, which has good mechanical strength and weather resistance. Its outer wall is firmly fixed and connected with the outer wall of the oil injection pipe 3 by high-strength sealant, which ensures that it will not loosen or displace under various complex working conditions. The outer wall of the fixed shell 4 is fixedly connected with the outer wall of the oil injection pipe 3. The fixed shell 4 is fixedly connected with a fixed column 17 which is made of solid stainless steel bar and has a fine polishing treatment on its surface. It not only provides stable support, but also reduces the friction when the lifting plate 15 slides. The outer wall of the fixed column 17 is slidingly connected with the lifting plate 15. The lifting plate 15 is internally provided with a limiting groove 16. The lifting plate 15 is fixedly connected with a lifting column 5 at the top. The lifting column 5 is made of high-strength titanium alloy material, which has excellent corrosion resistance and high strength-to-weight ratio. The lifting column 5 is fixedly connected with a pressing column 6 at the top. The pressing column 6 is arranged on top of the rubber plug 7. The outer wall of the fixed shell 4 is rotatably connected with a rotating rod 14 which is made of medium carbon steel material and has been quenched and tempered, having good toughness and strength. The outer wall of the rotating rod 14 is fixedly connected with a sliding column 18 which is slidingly connected inside the limiting groove 16. The outer wall of the fixed column 17 is sleeved with a spring 19 which plays a key role in resetting and auxiliary control, ensuring that the pressing column 6 can accurately return to the predetermined position or maintain a specific pressing state after operation, thereby realizing precise control of the rubber plug 7 and ensuring smooth oil injection operation and reliable sealing of the oil injection port 13. The top of the spring 19 is fixedly connected with the bottom of the lifting plate 15, and the bottom of the spring 19 is fixedly connected with the inner wall of the fixed shell 4.

[0034] Specifically, when it is necessary to add oil to the oil-cooled wheel hub motor, the pressing column 6 can be pressed manually, and the pressing column 6 starts to move downward after being stressed, and drives the lifting column 5 connected therewith to move synchronously, and further drives the lifting plate 15 to slide smoothly on the outer wall of the fixed column 17. In this process, the slide column 18 slides in the limiting groove 16 correspondingly, and the spring 19 is extruded in the sliding process, so that the spring 19 is gradually compressed. When the spring 19 is compressed to a certain extent, the spring 19 generates a rebound force due to the rebound characteristics of the spring 19, so that the slide column 18 is clamped at the top of the limiting groove 16, thereby realizing the fixed pressing state of the pressing column 6. In this way, the pressing column 6 can stably drive the rubber plug 7 to press downward, so that the oil inlet 13 is opened for oil injection. When the oil injection is completed, the pressing column 6 is pressed again, and the slide column 18 slides from the top to the bottom in the limiting groove 16, so that the pressing column 6 is released from the clamping and limitation, and is lifted, thereby releasing the continuous pressing of the rubber plug 7. The rubber plug 7 is restored to the original position under the action of the spring 10 and other components, the oil inlet 13 is closed, the whole oil injection operation process is completed, and the working efficiency is improved. The operator can easily open or close the one-way valve without complex tools or cumbersome operation steps, which is very important for quickly injecting, discharging or checking the oil-cooled wheel hub motor.

[0035] Working principle: when it is necessary to add oil to the inside, the pressing column 6 can be pressed, the lifting column 5 is lifted by the pressing column 6, the lifting plate 15 is slid on the outer wall of the fixed column 17 by the lifting column 5, the slide column 18 slides in the limiting groove 16, and the spring 19 is compressed, the slide column 18 is clamped at the top of the limiting groove 16 by the rebound of the spring 19, so that the rubber plug 7 is pressed downward by the fixed pressing of the pressing column 6, the rubber plug 7 slides out of the oil inlet 13, the connecting column 8 is lowered by the rubber plug 7, the connecting column 8 slides in the sealing column 12, the spring 10 is compressed, and the inside can be injected, when the oil injection is completed, the pressing column 6 can be pressed again, the slide column 18 slides in the limiting groove 16 to the bottom of the limiting groove 16, the pressing column 6 can be lifted, the rubber plug 7 is rebounded to a remote place by the rebound of the spring 10, and the oil inlet 13 is closed.

[0036] Finally, it should be pointed out that the above description is only a preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. Oil-cooled wheel hub motor, comprising a motor body (1), characterized in that: The motor body (1) one end is provided with output end (2), the motor body (1) outer wall is provided with oil injection pipe (3), the oil injection pipe (3) inside is provided with limit component, the oil injection pipe (3) outer wall is fixedly connected with pressing assembly; The limiting component includes a sealing column (12), the sealing column (12) is arranged in the oil injection pipe (3), the oil injection pipe (3) is provided with an oil injection port (13), the sealing column (12) is fixedly connected with the annular array of connecting plate (11), the connecting plate (11) is fixedly connected in the oil injection pipe (3), the sealing column (12) is slidably connected with a limiting disc (9), the sealing column (12) is provided with a spring (10), the spring (10) is fixedly connected to the inner wall of the sealing column (12), the spring (10) is fixedly connected to the bottom of the limiting disc (9), the limiting disc (9) is fixedly connected with a connecting column (8), the connecting column (8) is fixedly connected with a rubber plug (7), the rubber plug (7) is slidably connected in the oil injection port (13).

2. The oil-cooled wheel motor according to claim 1, characterized in that: The pressing assembly includes a fixed shell (4), and the fixed shell (4) is fixedly connected to the outer wall of the oil injection pipe (3).

3. The oil-cooled wheel motor according to claim 2, characterized in that: The fixed shell (4) is fixedly connected with a fixed column (17), and the fixed column (17) is slidably connected with a lifting plate (15).

4. The oil-cooled wheel motor according to claim 3, characterized in that: The lifting plate (15) is provided with a limiting groove (16), and the lifting plate (15) is fixedly connected with a lifting column (5).

5. The oil-cooled wheel motor of claim 4, characterized in that: The lifting column (5) is fixedly connected with a pressing column (6), and the pressing column (6) is arranged on the top of the rubber plug (7).

6. The oil-cooled wheel motor of claim 5, characterized in that: The fixed shell (4) is rotatably connected with a rotating rod (14), and the rotating rod (14) is fixedly connected with a sliding column (18), and the sliding column (18) is slidably connected in the limiting groove (16).

7. The oil-cooled wheel motor of claim 6, characterized in that: The fixed column (17) is sleeved with a spring (19), and the spring (19) is fixedly connected to the bottom of the lifting plate (15), and the spring (19) is fixedly connected to the inner wall of the fixed shell (4).

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