CN213384434U - Split type steering engine lower shell structure - Google Patents
Split type steering engine lower shell structure Download PDFInfo
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- CN213384434U CN213384434U CN202021909911.3U CN202021909911U CN213384434U CN 213384434 U CN213384434 U CN 213384434U CN 202021909911 U CN202021909911 U CN 202021909911U CN 213384434 U CN213384434 U CN 213384434U
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- type steering
- split
- lower shell
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Abstract
The utility model discloses a lower shell structure of a split steering gear, which comprises a shell body; the first cavity is a cone barrel body formed on the second cavity, one end with a large caliber is used for connecting the upper shell of the split steering gear, and one end with a small caliber is communicated with the second cavity; the inner cavity of the second cavity is used for penetrating the rack bushing and the rack, and a first cavity is formed at one end of the second cavity; and the first fixing structure is formed on the second cavity beside the first cavity and is used for connecting and fixing the auxiliary frame. The utility model provides a lower shell structure is as split type constitution part of turning to machine easily demolding, the production and processing of being convenient for, split type structure can be favorable to follow-up maintenance (only replacement damage part) through modular production, equipment, and then has reduced the production and the maintenance cost of turning to the machine. And, through setting up tang, sealing member isotructure the utility model provides a lower shell structure assembly is simple, has good leakproofness.
Description
Technical Field
The utility model relates to the field of automobiles, especially, relate to a split type lower shell structure who turns to machine of P-EPS.
Background
Electric power steering systems have been developed based on conventional mechanical steering systems. The electric power-assisted steering system utilizes power generated by a motor to assist a driver in steering operation, and mainly comprises a signal sensing device, a steering power-assisted mechanism and an electronic control device.
Generally, the structure is divided into three types, C-EPS, P-EPS and R-EPS. The present application relates generally to split steering gears for P-EPS. The P-EPS is a Pinion EPS, a Pinion EPS and a human contact EPS, a motor is stressed on a rack through a Pinion, namely a steering column and the motor are coupled to the rack in parallel in the same mechanism (such as a ball screw or a circulating ball); the basic principle is that a torque sensor is connected with a steering shaft (a pinion shaft), when the steering shaft rotates, the torque sensor starts to work, relative rotation angular displacement generated by an input shaft and an output shaft under the action of a torsion bar is converted into an electric signal and transmitted to an ECU, and the ECU determines the rotation direction of a motor and the magnitude of a power-assisted current according to signals of a vehicle speed sensor and the torque sensor, so that the power-assisted steering is controlled in real time. Therefore, the power assisting device can easily realize different power assisting effects of the motor when the vehicle speed is different, ensure that the vehicle is light and flexible when running in low-speed steering and is stable and reliable when running in high-speed steering.
Currently, in an EPS steering system, the mechanical structure design is crucial to the reliability of the entire EPS steering system. But difficult demolding often appears in current integral type casing, and the feed supplement is many, and the condition of structure complicacy is unfavorable for production, has brought very big inconvenience to the manufacturing and processing of EPS. Therefore, designing a shell which is easy to process and mold and light in weight is of great significance for improving the performance of the EPS system.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a shell structure under split type steering engine that relative prior art simple structure, easily manufacturing, weight is lighter.
In order to solve the technical problem, the utility model provides a lower shell structure of a split steering gear, which comprises a shell body;
the first cavity is a cone barrel body formed on the second cavity, one end with a large caliber is used for connecting the upper shell of the split steering gear, and one end with a small caliber is communicated with the second cavity;
the second cavity is formed into a barrel body, the inner cavity of the second cavity is used for penetrating the rack bushing and the rack, and the first cavity is formed at one end of the second cavity;
and the first fixing structure is formed on the second cavity beside the first cavity and is used for connecting and fixing the auxiliary frame.
Optionally, the split type steering gear lower shell structure is further improved, and the split type steering gear lower shell structure further comprises: a plurality of first stiffeners formed on the first cavity outer side wall.
Optionally, the split type steering gear lower shell structure is further improved, and the split type steering gear lower shell structure further comprises: and a plurality of second reinforcing members formed on the first fixing structure outer side wall.
Optionally, the split type steering gear lower shell structure is further improved, and the split type steering gear lower shell structure further comprises:
and the first positioning structure is formed on the inner side wall of the second cavity, is positioned in the second cavity of the lower shell below the gear shaft in the axial direction and is used for positioning and fixing a bearing in the second cavity, and the bearing is a needle bearing.
Optionally, the split type steering gear lower shell structure is further improved, and the split type steering gear lower shell structure further comprises: and the second positioning structure is formed on the inner side wall of the second cavity and is used for positioning the rack bushing.
Optionally, the split type steering gear lower shell structure is further improved, and the split type steering gear lower shell structure further comprises: and the first spigot is formed at the position of the barrel opening of the first cavity and is used for connecting the first cavity with the upper shell of the split steering engine.
Optionally, the structure of the lower shell of the split-type steering engine is further improved, and the lower shell of the split-type steering engine is fixedly connected with the upper shell of the split-type steering engine through bolts.
Optionally, the split type steering gear lower shell structure is further improved, and the split type steering gear lower shell structure is fixedly connected with the auxiliary frame through bolts by utilizing the first fixing structure.
The utility model discloses an assembly process as follows:
s1, processing and demolding the lower shell structure, wherein bidirectional mold drawing is adopted in the inner cavity of the shell, so that the processing amount can be reduced, and the demolding difficulty is reduced;
s2, pressing the rack bushing into the second cavity of the lower shell by using the outer ring, and pressing the needle bearing into the first fixing structure in an interference manner;
s3, pressing the rack into the rack bushing;
and S4, fixedly connecting the first fixing structure with the auxiliary frame through bolts.
Accordingly, it should be noted that the above steps do not represent structural limitations, they are merely named for convenience of description, and there should be no defined division between the respective assembly connecting members. For example, the needle bearing may be understood as a part of the lower housing and, correspondingly, may also be understood as a part of the steering gear input/output shaft assembly, which is merely a difference in how to divide the lower housing and is not to be understood as a limitation on the composition.
It should be noted that the installation order of the above steps is not limited to the implementation order, and the installation order of the above steps is only an exemplary description. The technical personnel in the field can adopt different installation orders according to actual needs, and the installation orders do not influence the composition of the input and output shafting.
The utility model discloses a split type turns to partly of machine, the field technical personnel can be according to the utility model discloses combine actual demand to develop split type another part (last shell structure) that turns to the machine. The utility model relates to a split type lower casing that turns to the machine is used for the holding to turn to the machine rack, can regard as independent module production manufacturing. The utility model provides a lower shell structure is as split type constitution part of turning to machine easily demolding, the production and processing of being convenient for, split type structure can be favorable to follow-up maintenance (only replacement damage part) through modular production, equipment, and then has reduced the production and the maintenance cost of turning to the machine. And, through setting up tang, sealing member isotructure the utility model provides a lower shell structure assembly is simple, has good leakproofness.
Drawings
The drawings of the present application are intended to illustrate the general nature of methods, structures and/or materials used in accordance with certain exemplary embodiments of the present application, and to supplement the description presented in the specification. The drawings of the present invention, however, are not to scale and may not accurately reflect the precise structural or performance characteristics of any given embodiment, and should not be construed as limiting or restricting the scope of numerical values or attributes encompassed by exemplary embodiments in accordance with the present invention. The present invention will be described in further detail with reference to the following detailed description and accompanying drawings:
fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third embodiment of the present invention.
Description of the reference numerals
The large-caliber end 1.1 of the first cavity
Small caliber end 1.2 of the first cavity
First stiffener 1.3
First spigot 1.4
Rack bushing 3
A second reinforcement 5.1.
Detailed Description
The following description of the embodiments of the present invention is provided by way of specific examples, and other advantages and technical effects of the present invention will be fully apparent to those skilled in the art from the disclosure of the present invention. The utility model discloses can also implement or use through different embodiment, each item detail in this specification can also be used based on different viewpoints, carries out various decorations or changes under the general design thought that does not deviate from the utility model. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. The following exemplary embodiments of the present invention may be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.
It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present. Like reference numerals refer to like elements throughout the drawings. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Other words used to describe the relationship between elements or layers (e.g., "between … …" and "directly between … …", "adjacent to … …" and "directly adjacent to … …", "on … …" and "directly on … …", etc.) should be interpreted in the same manner.
A first embodiment, as shown in fig. 1, the utility model provides a lower casing structure of a split steering gear, which comprises;
the first cavity 1 is a cone barrel body formed on the second cavity 2, one end 1.1 with a large caliber is used for connecting an upper shell of the split steering engine, and one end 1.2 with a small caliber is communicated with the second cavity 2;
the second cavity 2 is formed into a barrel body, the inner cavity of the second cavity is used for penetrating the rack bushing 3 and the rack 4, and the first cavity 1 is formed at one end of the second cavity;
and the first fixing structure 5 is formed on the second cavity 2 beside the first cavity 1 and is used for connecting and fixing the auxiliary frame.
A second embodiment, as shown in fig. 2, the utility model provides a lower casing structure of a split steering gear, which comprises;
the first cavity 1 is a cone barrel body formed on the second cavity 2, one end 1.1 with a large caliber is used for connecting an upper shell of the split steering engine, and one end 1.2 with a small caliber is communicated with the second cavity 2;
the second cavity 2 is formed into a barrel body, the inner cavity of the second cavity is used for penetrating the rack bushing 3 and the rack 4, and the first cavity 1 is formed at one end of the second cavity;
the first fixing structure 5 is formed on the second cavity 2 beside the first cavity 1 and is used for connecting and fixing the auxiliary frame;
a plurality of first reinforcing members 1.3 formed on the first cavity outer side wall, arranged in the first cavity axial direction;
a plurality of second stiffeners 5.1 formed on the outer side walls of the first fixing structure 5.
Further, it will be understood that, although the terms first, second, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of exemplary embodiments according to the present invention.
A third embodiment, as shown in fig. 3 and fig. 2, the utility model provides a lower shell structure of a split steering gear, which comprises;
the first cavity 1 is a cone barrel body formed on the second cavity 2, one end 1.1 with a large caliber is used for connecting an upper shell of the split steering engine, and one end 1.2 with a small caliber is communicated with the second cavity 2;
the second cavity 2 is formed into a barrel body, the inner cavity of the second cavity is used for penetrating the rack bushing 3 and the rack 4, and the first cavity 1 is formed at one end of the second cavity;
the first fixing structure 5 is formed on the second cavity 2 beside the first cavity 1 and is used for connecting and fixing the auxiliary frame;
a plurality of first reinforcing members 1.3 formed on the first cavity outer side wall, arranged in the first cavity axial direction;
a plurality of second stiffeners 5.1 formed on the outer side walls of the first fixing structure 5;
a first positioning structure 2.1 which is formed on the inner side wall of the second cavity 2, is positioned in the second cavity 2 of the lower shell below the gear shaft in the axial direction and is used for positioning and fixing a bearing, wherein the bearing is a needle bearing;
a second positioning structure 2.2 formed on the inner side wall of the second cavity 2 for positioning the rack bushing 3;
the first spigot 1.4 is formed at the barrel opening of the first cavity 1 and is used for connecting the first cavity with the upper shell of the split steering gear;
the lower shell structure is fixedly connected with the upper shell of the split steering engine through bolts, and the lower shell structure is fixedly connected with the auxiliary frame through bolts by utilizing the first fixing structure.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The present invention has been described in detail with reference to the specific embodiments and examples, but these should not be construed as limitations of the present invention. Numerous variations and modifications can be made by those skilled in the art without departing from the principles of the invention, which should also be considered as within the scope of the invention.
Claims (9)
1. A lower housing structure of a split type steering gear is characterized by comprising;
the first cavity is a cone barrel body formed on the second cavity, one end with a large caliber is used for connecting the upper shell of the split steering gear, and one end with a small caliber is communicated with the second cavity;
the second cavity is formed into a barrel body, the inner cavity of the second cavity is used for penetrating the rack bushing and the rack, and the first cavity is formed at one end of the second cavity;
and the first fixing structure is formed on the second cavity beside the first cavity and is used for connecting and fixing the auxiliary frame.
2. The split type steering machine lower housing structure of claim 1, further comprising: a plurality of first stiffeners formed on the first cavity outer side wall.
3. The split type steering machine lower housing structure of claim 1, further comprising: and a plurality of second reinforcing members formed on the first fixing structure outer side wall.
4. The split type steering machine lower housing structure of claim 1, further comprising:
and the first positioning structure is formed on the inner side wall of the second cavity, is positioned in the second cavity of the lower shell below the gear shaft in the axial direction and is used for positioning and fixing the bearing.
5. The split type steering machine lower housing structure of claim 4, wherein: the bearing is a needle bearing.
6. The split type steering machine lower housing structure of claim 1, further comprising: and the second positioning structure is formed on the inner side wall of the second cavity and is used for positioning the rack bushing.
7. The split type steering machine lower housing structure of claim 1, further comprising: and the first spigot is formed at the position of the barrel opening of the first cavity and is used for connecting the first cavity with the upper shell of the split steering engine.
8. The split type steering machine lower housing structure of any one of claims 1 to 7, wherein: the split type steering engine is fixedly connected with the upper shell of the split type steering engine through bolts.
9. The split type steering machine lower housing structure of any one of claims 1 to 7, wherein: the first fixing structure is fixedly connected with the auxiliary frame through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021909911.3U CN213384434U (en) | 2020-09-04 | 2020-09-04 | Split type steering engine lower shell structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021909911.3U CN213384434U (en) | 2020-09-04 | 2020-09-04 | Split type steering engine lower shell structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213384434U true CN213384434U (en) | 2021-06-08 |
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ID=76214215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021909911.3U Active CN213384434U (en) | 2020-09-04 | 2020-09-04 | Split type steering engine lower shell structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213384434U (en) |
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2020
- 2020-09-04 CN CN202021909911.3U patent/CN213384434U/en active Active
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