Electric hydraulic power steering pump assembly

Abstract

The utility model relates to the technical field of vehicle steering, in particular to an electric hydraulic power steering pump assembly which comprises a motor cover, an oil can and a U-shaped support, a plurality of buffer grooves are formed in the support, vertical rods are fixedly installed in the buffer grooves, the vertical rods are sleeved with buffer blocks in a sliding mode, and the buffer blocks are connected with the motor cover. Buffer springs are fixedly installed on the upper and lower surfaces of the buffer blocks, the ends, away from the buffer blocks, of the two buffer springs are fixedly connected with the upper and lower ends of the buffer groove correspondingly, L-shaped mounting plates are fixedly installed on the two buffer blocks on the same side, and the motor cover is installed between the two mounting plates through multiple sets of connecting assemblies. When a vehicle bumps and vibrates in the running process, the buffering and damping effects on the steering pump are achieved through mutual matching of the vertical rod, the buffering block, the buffering spring, the mounting plate and the connecting assembly, so that impact on the steering pump is reduced, faults of the steering pump are avoided, and the service life of the steering pump is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle steering, in particular to an electric hydraulic power steering pump assembly. Background Art

[0002] The electric hydraulic power steering pump is an important device for controlling the vehicle's driving route and direction. It plays an auxiliary steering role during the vehicle's steering process. It has many advantages such as energy saving, environmental protection, and safety. It is a current research hotspot in the electrification of power-assisted conversion. The electric hydraulic power steering pump is an integral structure composed of an electric motor, a support, an oil pot and a hydraulic pump. The electric motor, the oil pot and the hydraulic pump are installed on the support.

[0003] Existing electric hydraulic power steering pumps are all installed in the front cabin of the vehicle. Since the vehicle experiences bumps and vibrations during driving, and the electric hydraulic power steering pump is rigidly connected to the vehicle body through bolts, this can easily cause impact to the electric hydraulic power steering pump, leading to malfunctions. Utility Model Content

[0004] The purpose of the utility model is to solve the following shortcomings in the prior art: the vehicle experiences bumps and vibrations during driving, and the electric hydraulic power steering pump is rigidly connected to the vehicle body by bolts, which easily causes impact to the electric hydraulic power steering pump, resulting in malfunction, and an electric hydraulic power steering pump assembly is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An electric hydraulic power steering pump assembly comprises a motor cover, an oil pot and a U-shaped support, wherein the motor cover and the oil pot are fixedly connected, and a plurality of connecting ears are fixedly mounted on the support;

[0007] The support is provided with a plurality of buffer grooves, in each of which a vertical rod is vertically fixedly installed, a buffer block is slidably sleeved on the vertical rod, and buffer springs are fixedly installed on the upper and lower surfaces of the buffer block, and one end of the two buffer springs away from the buffer block is respectively fixedly connected to the upper and lower ends of the buffer groove, and an L-shaped mounting plate is fixedly installed on the two buffer blocks on the same side, and the motor cover is installed between the two mounting plates through a plurality of connection components.

[0008] Preferably, a first connecting hole is symmetrically opened on the mounting plate, and the connecting assembly includes an L-shaped connecting block and a bolt fastener fixedly mounted on the motor cover, a second connecting hole is opened on the connecting block, and the bolt fastener passes through the first connecting hole and the second connecting hole to connect the connecting block and the mounting plate.

[0009] Preferably, a plurality of oil chambers are provided inside the support, the oil chambers are filled with lubricating oil, a plurality of inner walls of the buffer grooves are provided with rectangular holes connected to the plurality of oil chambers, and a sealing component for blocking the oil chambers is provided in the rectangular holes.

[0010] Preferably, a rectangular movable groove is opened on the upper inner wall of the rectangular hole, and the blocking assembly includes an L-shaped blocking block slidably installed in the movable groove and two spring rods symmetrically fixedly installed on the blocking block, one end of the two spring rods away from the blocking block is fixedly connected to the inner wall of the movable groove, and one end of the blocking block is in contact with the buffer block.

[0011] Preferably, the support is provided with a plurality of oil filling holes respectively connected with the plurality of oil chambers, the oil filling holes are fixedly connected with an oil filling pipe, and a sealing plug is inserted at one end of the oil filling pipe.

[0012] Preferably, a buffer pad is provided between the connecting block and the mounting plate, and the buffer pad is made of rubber.

[0013] In the utility model, the beneficial effects are:

[0014] 1. When the vehicle is bumpy and vibrating during driving, the vertical rod, buffer block, buffer spring, mounting plate and connecting components cooperate with each other to buffer and reduce shock on the steering pump, thereby reducing the impact on the steering pump, avoiding steering pump failure, and effectively prolonging the service life of the steering pump;

[0015] 2. When the friction between the buffer block and the buffer groove increases, the sealing assembly will automatically open the oil chamber. At this time, the lubricating oil in the oil chamber will automatically pass through the rectangular hole into the buffer groove, lubricating the buffer block and the buffer groove, thereby improving the buffering and shock-absorbing effect of the buffer block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an electric hydraulic power steering pump assembly proposed by the utility model;

[0017] Figure 2 It is a three-dimensional partial structural schematic diagram of a support in an electric hydraulic power steering pump assembly proposed by the utility model;

[0018] Figure 3 It is a schematic diagram of a three-dimensional partial cross-sectional structure of one end of a support in an electric hydraulic power steering pump assembly proposed by the utility model;

[0019] Figure 4 for Figure 2 A magnified view of the structure in the middle.

[0020] In the figure: 1 motor cover, 2 oil pot, 3 support, 4 connecting ear, 5 vertical rod, 6 buffer block, 7 buffer spring, 8 mounting plate, 9 connecting block, 10 bolt fastener, 11 oil chamber, 12 blocking block, 13 spring rod, 14 oil filling pipe, 15 sealing plug. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-Figure 4 An electric hydraulic power steering pump assembly includes a motor cover 1, an oil pot 2 and a U-shaped support 3. The motor cover 1 is fixedly connected to the oil pot 2. A plurality of connecting ears 4 are fixedly mounted on the support 3. The support 3 is mounted on a vehicle frame through the plurality of connecting ears 4.

[0023] A plurality of buffer grooves are provided on the support 3, and vertical rods 5 are vertically fixedly installed in the plurality of buffer grooves. A buffer block 6 is slidably sleeved on the vertical rod 5, and buffer springs 7 are fixedly installed on the upper and lower surfaces of the buffer block 6. The ends of the two buffer springs 7 away from the buffer block 6 are respectively fixedly connected to the upper and lower ends of the buffer groove. An L-shaped mounting plate 8 is fixedly installed on the two buffer blocks 6 on the same side, and the motor cover 1 is installed between the two mounting plates 8 through a plurality of connection components.

[0024] The buffer block 6 can move up and down in the buffer groove along the direction of the vertical rod 5. During the movement of the buffer block 6, one of the two buffer springs 7 on the buffer block 6 is driven to be stretched and the other to be compressed.

[0025] When the vehicle is bumped and vibrated during driving, the steering pump will move up and down under its own gravity. During the movement, the mounting plate 8 and the connecting assembly will drive the multiple buffer blocks 6 to move up and down in the multiple buffer grooves respectively. Then, the buffer blocks 6 will drive the two buffer springs 7 in the buffer grooves to stretch and compress, and the impact force generated by the vibration of the steering pump is converted into the elastic force of the buffer springs 7, thereby buffering the steering pump, reducing the impact on the steering pump, avoiding failure of the steering pump, and effectively increasing the service life of the steering pump.

[0026] A first connecting hole is symmetrically opened on the mounting plate 8, and the connecting assembly includes an L-shaped connecting block 9 and a bolt fastener 10 fixedly installed on the motor cover 1. A second connecting hole is opened on the connecting block 9, and the bolt fastener 10 passes through the first connecting hole and the second connecting hole to connect the connecting block 9 and the mounting plate 8.

[0027] When installing the steering pump on the support 3, place the multiple connecting blocks 9 on the motor cover 1 on the two mounting plates 8, align the first connecting hole and the second connecting hole, and then fix the connecting blocks 9 on the mounting plates 8 by bolt fasteners 10 to complete the installation of the steering pump.

[0028] A plurality of oil chambers 11 are provided inside the support 3, and the oil chambers 11 are filled with lubricating oil. Rectangular holes connected to the plurality of oil chambers 11 are provided on the inner walls of the plurality of buffer grooves. A sealing assembly for blocking the oil chambers 11 is provided in the rectangular hole. A rectangular movable groove is provided on the upper inner wall of the rectangular hole. The sealing assembly includes an L-shaped blocking block 12 slidably installed in the movable groove and two spring rods 13 symmetrically fixedly installed on the blocking block 12. One end of the two spring rods 13 away from the blocking block 12 is fixedly connected to the inner wall of the movable groove, and one end of the blocking block 12 is in contact with the buffer block 6.

[0029] As the vehicle is used for a long time, the buffer block 6 moves up and down in the buffer groove for a long time, and the friction between the buffer block 6 and the buffer groove will continue to increase. At the same time, the friction between the block 12 and the buffer block 6 will continue to increase until the friction is greater than the elastic force of the spring rod 13. At this time, the buffer block 6 will drive the block 12 to move together, thereby driving the block 12 to move into the moving groove. The spring rod 13 is compressed, and the rectangular hole will automatically open at this time. The lubricating oil in the oil chamber 11 will automatically enter the buffer groove, which plays a lubricating role between the buffer groove and the buffer block 6, reduces the existence of friction, and improves the buffering and shock-absorbing effect of the buffer block 6. At the same time, the friction between the buffer block 6 and the block 12 will also be reduced, and they will move relative to each other, so that the block 12 will block the rectangular hole again under the action of the elastic force of the spring rod 13.

[0030] The support 3 is provided with a plurality of oil filling holes respectively connected with the plurality of oil chambers 11 , and an oil filling pipe 14 is fixedly connected in the oil filling hole, and a sealing plug 15 is inserted at one end of the oil filling pipe 14 . When the vehicle is being repaired, lubricating oil can be regularly filled into the oil chamber 11 through the oil filling pipe 14 .

[0031] A buffer pad is provided between the connecting block 9 and the mounting plate 8. The buffer pad is made of rubber and can reduce the impact force between the connecting block 9 and the mounting plate 8, extend the service life of the connecting block 9 and the mounting plate 8, and also reduce the noise generated between the connecting block 9 and the mounting plate 8.

[0032] In the utility model, when the vehicle is bumped and vibrated during driving, the steering pump will move up and down under its own gravity, and in the process of movement, it will drive multiple buffer blocks 6 to move up and down in multiple buffer grooves respectively through the mounting plate 8 and the connecting assembly, and then the two buffer springs 7 in the buffer grooves are stretched and compressed through the buffer blocks 6, and the impact force generated by the vibration of the steering pump is converted into the elastic force of the buffer spring 7, thereby playing a buffering role on the steering pump, reducing the impact on the steering pump, avoiding failure of the steering pump, and effectively improving the service life of the steering pump.

[0033] In general, in view of the technical problem that the vehicle experiences bumps and vibrations during driving, and the electric hydraulic power steering pump is rigidly connected to the vehicle body by bolts, which can easily cause impact to the electric hydraulic power steering pump and cause failure; a technical solution is adopted: through the mutual cooperation of the vertical rod 5, the buffer block 6, the buffer spring 7, the mounting plate 8 and the connecting assembly, the steering pump is buffered and shock-absorbing; because the implementation process of the technical solution is: when the vehicle experiences bumps and vibrations during driving, the steering pump will move up and down under its own gravity, and in the process of movement, it will drive multiple buffer blocks 6 to move up and down in multiple buffer grooves respectively through the mounting plate 8 and the connecting assembly, and then the buffer blocks 6 will drive the two buffer springs 7 in the buffer groove to stretch and compress, and the impact force generated by the vibration of the steering pump is converted into the elastic force of the buffer spring 7, thereby playing a buffering role for the steering pump; so the technical problem can definitely be solved, and the technical effect achieved is: reducing the impact on the steering pump, avoiding failure of the steering pump, and effectively improving the service life of the steering pump.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electric hydraulic power steering pump assembly, comprising a motor cover (1) and an oil pot (2) and a U-shaped support (3), characterized in that The motor cover (1) and the oil pot (2) are fixedly connected, and a plurality of connecting ears (4) are fixedly mounted on the support (3); The support (3) is provided with a plurality of buffer grooves, and vertical rods (5) are vertically fixedly installed in the plurality of buffer grooves. A buffer block (6) is slidably sleeved on the vertical rod (5), and buffer springs (7) are fixedly installed on the upper and lower surfaces of the buffer block (6). The ends of the two buffer springs (7) away from the buffer block (6) are respectively fixedly connected to the upper and lower ends of the buffer groove. An L-shaped mounting plate (8) is fixedly installed on the two buffer blocks (6) on the same side, and the motor cover (1) is installed between the two mounting plates (8) through a plurality of connection components.

2. The electric hydraulic power steering pump assembly according to claim 1, characterized in that: The mounting plate (8) is symmetrically provided with first connecting holes, the connecting assembly comprises an L-shaped connecting block (9) and a bolt fastener (10) fixedly mounted on the motor cover (1), the connecting block (9) is provided with a second connecting hole, and the bolt fastener (10) passes through the first connecting hole and the second connecting hole to connect the connecting block (9) and the mounting plate (8).

3. The electric hydraulic power steering pump assembly according to claim 1, characterized in that: A plurality of oil chambers (11) are provided inside the support (3), and the oil chambers (11) are filled with lubricating oil. The inner walls of the plurality of buffer grooves are provided with rectangular holes connected to the plurality of oil chambers (11), and a sealing component for blocking the oil chambers (11) is provided in the rectangular holes.

4. The electric hydraulic power steering pump assembly according to claim 3, characterized in that: A rectangular movable groove is provided on the upper inner wall of the rectangular hole, and the blocking assembly comprises an L-shaped blocking block (12) slidably mounted in the movable groove and two spring rods (13) symmetrically fixedly mounted on the blocking block (12), one end of the two spring rods (13) away from the blocking block (12) is fixedly connected to the inner wall of the movable groove, and one end of the blocking block (12) is in contact with the buffer block (6).

5. The electric hydraulic power steering pump assembly according to claim 3, characterized in that: The support (3) is provided with a plurality of oil injection holes respectively connected to a plurality of oil chambers (11); an oil injection pipe (14) is fixedly connected to the oil injection hole; a sealing plug (15) is inserted at one end of the oil injection pipe (14).

6. The electric hydraulic power steering pump assembly according to claim 2, characterized in that: A buffer pad is provided between the connecting block (9) and the mounting plate (8), and the buffer pad is made of rubber.

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