CN220639998U - A split type shell structure for MSG - Google Patents
A split type shell structure for MSG Download PDFInfo
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- CN220639998U CN220639998U CN202322225777.5U CN202322225777U CN220639998U CN 220639998 U CN220639998 U CN 220639998U CN 202322225777 U CN202322225777 U CN 202322225777U CN 220639998 U CN220639998 U CN 220639998U
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- 239000000758 substrate Substances 0.000 claims 1
- 238000003754 machining Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- IYZWUWBAFUBNCH-UHFFFAOYSA-N 2,6-dichlorobiphenyl Chemical compound ClC1=CC=CC(Cl)=C1C1=CC=CC=C1 IYZWUWBAFUBNCH-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 239000000428 dust Substances 0.000 description 1
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Abstract
The utility model relates to a split type shell structure for MSG, comprising a left shell and a right shell; the large end of the left shell is fixedly connected with the large end of the right shell, left and right mounting hole seats are respectively formed at the edges of the small end of the left shell and the small end of the right shell, mounting bushings are fixed in the mounting hole seats, and the mounting bushings are fixedly connected to the auxiliary frame through bolts; the left shell is a long shell, a ball screw used for connecting an input shaft system assembly is accommodated in a cavity of the left shell, the right shell is formed by combining two mutually perpendicular cylinder bodies, the ball screw penetrates through the first cylinder body, a worm assembly is assembled in the second cylinder body, and the worm assembly is connected with a motor; the upper end of the second cylinder is provided with a PCB. The split type shell provided by the utility model is easy to open, convenient for finish machining, and reduces the difficulty of opening the die and the machining cost of the long shell.
Description
Technical Field
The utility model relates to a split type shell structure, in particular to a split type shell structure for MSG, and belongs to the technical field of automobile manufacturing.
Background
An electric power steering system (Electric Power Steering EPS) driven by a motor was developed from a hydraulic power steering system (Hydraulic Power Steering HPS). The electric power steering system provides power assistance according to the intention of a driver as required, and comprises a steering column, a steering gear, a power assisting unit, a control unit, a transmission mechanism, a torque sensor and an intermediate shaft.
The EPS system is mainly divided into EPSc tubular columns, EPSp pinion type, EPSdp double pinion type, EPSapa parallel shaft type and EPsrc coaxial type. The utility model mainly relates to an EPsrc coaxial steering gear shell. EPsrc is coaxial, and a ball screw and a worm gear are used as a transmission mechanism of the EPsrc, so that the rotation motion of a motor is converted into the axial motion of a rack. The basic principle is that a torque sensor arranged on an input and output shaft captures a relative rotation angle signal and a torque signal and transmits the relative rotation angle signal and the torque signal to a control unit; the control unit calculates the needed power-assisted amount according to the speed signal of the whole vehicle, the relative rotation angle signal of the torque sensor and the torque signal, and the power-assisted amount is transmitted to the rack through the transmission mechanism, so that power-assisted steering is realized. Under the condition that mechanical parts are not required to be changed, the boosting characteristic of the control unit can be changed through software, the effect that boosting is provided according to the needs of different vehicle speeds is achieved, and therefore average energy consumed by accumulation is small, and oil consumption is reduced.
Currently, in an electric power steering system, a steering gear is used as an actuator of the steering system, and the mechanical structural design of the steering gear has a great influence on the stability of the steering system. However, most of the existing steering gears are integrated, the mold is difficult to mold, the phenomenon of meat deficiency is difficult to avoid, and the finish machining after casting the blank is not facilitated. Therefore, the split type shell structure applied to EPsrc coaxial MSG has great significance in improving the stability of an electric power steering system.
Disclosure of Invention
The utility model aims to solve the technical problem of overcoming the defects of the prior art, and provides a split type shell structure for MSG, which has reasonable structure and simple manufacture, and can reduce the processing difficulty and the production cost on the premise of ensuring the required functional requirements.
In order to achieve the above purpose, the specific technical scheme of the utility model is as follows: a split housing structure for an MSG, characterized by: comprises a left shell and a right shell; the large end of the left shell is fixedly connected with the large end of the right shell, left and right mounting hole seats are respectively formed at the edges of the small end of the left shell and the small end of the right shell, mounting bushings are fixed in the mounting hole seats, and the mounting bushings are fixedly connected to the auxiliary frame through bolts; the left shell is a long shell, a ball screw used for connecting an input shaft system assembly is accommodated in a cavity of the left shell, the right shell is formed by combining two mutually perpendicular cylinder bodies, the ball screw penetrates through the first cylinder body, a worm assembly is assembled in the second cylinder body, and the worm assembly is connected with a motor; the upper end of the second cylinder is provided with a PCB.
Further, an inclined cavity for accommodating the input/output shafting assembly is formed in the small end, close to the left shell, of the left shell, and an inclination angle of 70 degrees is formed between the inclined cavity and the axis direction of the left shell; the input/output shafting assembly penetrates through the inclined cavity and is connected with the ball screw.
Further, a first ball bearing is assembled in the small end of the inclined cavity, the input/output shafting assembly penetrates through the first ball bearing and is fixedly connected through a first locking nut after extending into the inclined cavity, and a tail cover is arranged at the tail end of the input/output shafting assembly;
the large end of the inclined cavity is fixedly connected with the upper cover through bolts.
Further, the large end of the left shell is fixedly connected with the large end of the right shell through bolts, and a cavity for accommodating a steering nut, a locking nut and a worm gear of the ball screw is formed between the large end of the left shell and the right shell; after the ball screw passes through the left shell, the worm wheel is fixedly connected with a steering nut on the ball screw through a second locking nut.
Further, a second ball bearing and wave washers arranged on two sides of the second ball bearing are pressed at the large end of the left shell, and the second ball bearing is fixedly connected with the left shell through a large screw cap.
Further, a plurality of long reinforcing ribs are uniformly distributed along the axial direction of the periphery of the left shell.
Further, the left mounting hole seat and the right mounting hole seat are also provided with mounting hole seat reinforcing ribs, and the left mounting hole seat and the right mounting hole seat are respectively connected with the left shell body and the right shell body through the mounting hole seat reinforcing ribs.
Further, a second cylinder body of the right shell is provided with a right shell spigot end which is fixedly connected with the motor through a bolt.
Further, the PCB is installed in the PCB base formed on the second cylinder of the right shell, the PIN angle of the PCB is connected with the PIN angle of the motor in a welding mode, and the PCB is fixedly connected with the upper cover through bolts.
Further, the worm assembly is fixed in the worm cavity of the right housing by a lock nut.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model is used as a ball screw assembly, a speed reducing mechanism and an electric control unit of a complete split type electric power steering gear for a shell of the steering gear, and can be used as two independent components for independent die sinking processing in a manufacturing link. The split type shell provided by the utility model is easy to open the die, is convenient for finish machining, ensures the required functional requirements through a later assembly process, greatly reduces the difficulty of die opening and finish machining of the steering machine long shell, and reduces the die opening difficulty and machining cost of the long shell.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
FIG. 2 is a schematic diagram of a cavity of an input/output shafting assembly according to the present utility model.
Fig. 3 is a cross-sectional view of the overall structure of the present utility model.
Fig. 4 is a schematic diagram of the connection of the right housing to the motor and PCB assembly of the present utility model.
Description of the drawings: 1-left shell; 1.1-left housing small end; 1.2-left shell big end; 1.3 left mounting hole seat reinforcing ribs; 1.4-the left shell tilts the big end of the cavity; 1.5-the left shell tilts the small end of the cavity; 1.6-input-output shaft assembly; 1.7-a first ball bearing; 1.8-a first lock nut; 1.9-tail cap; 2-right shell; 2.1-right housing small end; 2.2-the large end of the right shell; 2.3 right mounting hole seat reinforcing ribs; 2.4-the spigot end of the right shell; 3-a left mounting hole seat; 4-right mounting hole seat; 5-mounting a bushing; 6-ball screw; 6.1-wave washers; 6.2-a second ball bearing; 6.3-big screw cap; 6.4-worm gear; 6.5-a second lock nut; 6.6-steering nut; 9-long reinforcing ribs; 10-a PCB board; 11-an upper cover; 12-a worm gear assembly; 13-a third lock nut; 15-an electric motor; 16-fastening bolts; 17-upper cap bolts.
Detailed Description
The present embodiment provides a split type housing structure for MSG, the structure is shown in fig. 1, and the split type housing structure comprises a left housing 1, which is a long housing formed on a right housing 2, a large end 1.2 of the split type housing structure is used for connecting the right housing 2, a small end 1.1 of the split type housing structure is used for installing a bushing 5 and a rack sheath, and a ball screw 6 penetrates through an inner cavity of the left housing 1.
The right shell 2 is formed on a speed reducer structure 2.4, the big end 2.2 of the right shell is used for being connected with the split left shell 1, and the small end 2.1 of the right shell is used for being provided with a rack sheath;
the left and right mounting hole seats 3, 4 are respectively formed on the edges of the split left and right split shells 1, 2, are connected with the shell base body through reinforcing ribs 1.3, 2.3, are used for fixing the mounting bush 5, and are used for fixedly connecting the mounting bush 5 on the auxiliary frame through bolts.
A plurality of long reinforcing ribs 9 are formed around the left housing 1 and uniformly distributed along the axial direction of the cavity.
As shown in fig. 2 and 3, the MSG split housing structure of the present utility model includes:
the left shell 1, its inclined cavity is used for holding input output shafting assembly 1.6, a left shell cavity tip 1.5 assembles first ball bearing 1.7, first assembles ball screw (i.e. rack) 6 in left shell 1 to with input output shafting assembly 1.6 and ball screw (i.e. rack) 6 cooperation adjustment to correct position, then pack input output shafting assembly 1.6 in the left shell, its with first lock nut 1.8 fixed connection, input output shafting assembly 1.6's the other end and upper cover 11 pass through bolt fixed connection.
The left casing 1 accommodates the ball screw assembly (i.e. the rack) 6, wave washers 6.1 are placed on two sides of a second ball bearing 6.2 on the ball screw assembly (i.e. the rack) 6, and pressed into the left casing 1, the second ball bearing 6.2 is fixedly connected with the left casing 1 through a large screw cap 6.3, and a worm wheel 6.4 is fixedly connected with a steering nut 6.6 on the ball screw assembly (i.e. the rack) 6 through a second locking nut 6.5.
As shown in fig. 4, the present utility model is an MSG split housing structure, comprising:
the right shell 2 is structurally provided with two combined and vertical cylinders, the ball screw penetrates through one barrel, and the small end face 2.1 of the right shell is fixedly connected with the left shell through bolts; the worm assembly 12 is then assembled in the other barrel, and the right housing spigot end 2.4 is fixedly connected to the motor 15 by means of a fastening bolt 16.
The PCB base 2.5 is arranged on the barrel body where the worm assembly 12 is, the PCB 10 is glued on the PCB base 2.5, the PCB PIN angle 10.1 penetrates through the big end face 2.4 of the barrel body and is connected with the motor PIN angle 15.1 in a welding mode, the dust cover 10 is buckled on the buckle of the PCB 10, and the PCB base 2.5 is fixedly connected with the upper cover 11 through the upper cover bolt 17.
In addition to the embodiments described above, other embodiments of the utility model are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the protection scope of the utility model.
Claims (10)
1. A split housing structure for an MSG, characterized by: comprises a left shell and a right shell;
the large end of the left shell is fixedly connected with the large end of the right shell, left and right mounting hole seats are respectively formed at the edges of the small end of the left shell and the small end of the right shell, mounting bushings are fixed in the mounting hole seats, and the mounting bushings are fixedly connected to the auxiliary frame through bolts;
the left shell is a long shell, a ball screw used for connecting an input shaft system assembly and an output shaft system assembly is accommodated in a cavity of the left shell,
the right shell is formed by combining two mutually perpendicular cylinders, a ball screw penetrates through the first cylinder, a worm assembly is assembled in the second cylinder, and the worm assembly is connected with a motor; the upper end of the second cylinder is provided with a PCB.
2. The split housing structure for an MSG of claim 1, wherein: the small end of the left shell near the left shell is provided with an inclined cavity for accommodating the input/output shafting assembly, and the inclined cavity and the axial direction of the left shell have an inclination angle of 70 degrees; the input/output shafting assembly penetrates through the inclined cavity and is connected with the ball screw.
3. The split housing structure for an MSG of claim 2, wherein: a first ball bearing is arranged in the small end of the inclined cavity, the input/output shafting assembly penetrates through the first ball bearing and is fixedly connected through a first locking nut after extending into the inclined cavity, and a tail cover is arranged at the tail end of the input/output shafting assembly;
the large end of the inclined cavity is fixedly connected with the upper cover through bolts.
4. The split housing structure for an MSG of claim 1, wherein: the large end of the left shell is fixedly connected with the large end of the right shell through a bolt, and a cavity for accommodating a steering nut, a locking nut and a worm gear of the ball screw is formed between the large end of the left shell and the right shell; after the ball screw passes through the left shell, the worm wheel is fixedly connected with a steering nut on the ball screw through a second locking nut.
5. The split housing structure for an MSG of claim 1, wherein: the big end of the left shell is provided with a second ball bearing and wave washers arranged on two sides of the second ball bearing in a pressing mode, and the second ball bearing is fixedly connected with the left shell through a big screw cap.
6. The split housing structure for an MSG of claim 1, wherein: a plurality of long reinforcing ribs are uniformly distributed along the axial direction of the periphery of the left shell.
7. The split housing structure for an MSG of claim 1, wherein: the left and right mounting hole seats are also provided with mounting hole seat reinforcing ribs, and the left and right mounting hole seats are respectively connected with the left and right shell substrates through the mounting hole seat reinforcing ribs.
8. The split housing structure for an MSG of claim 1, wherein: the second cylinder body of the right shell is provided with a right shell spigot end which is fixedly connected with the motor through a bolt.
9. The split housing structure for an MSG of claim 1, wherein: the PCB is arranged in a PCB base formed on the second cylinder of the right shell, the PIN angle of the PCB is connected with the PIN angle of the motor in a welding mode, and the PCB is fixedly connected with the upper cover through bolts.
10. The split housing structure for an MSG of claim 1, wherein: the worm assembly is fixed in the worm cavity of the right shell through the lock nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322225777.5U CN220639998U (en) | 2023-08-18 | 2023-08-18 | A split type shell structure for MSG |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322225777.5U CN220639998U (en) | 2023-08-18 | 2023-08-18 | A split type shell structure for MSG |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220639998U true CN220639998U (en) | 2024-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322225777.5U Active CN220639998U (en) | 2023-08-18 | 2023-08-18 | A split type shell structure for MSG |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220639998U (en) |
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2023
- 2023-08-18 CN CN202322225777.5U patent/CN220639998U/en active Active
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