Novel lightweight upper cover structure

Abstract

The utility model discloses a novel light-weight upper cover structure which comprises a cover body, three mounting holes are evenly formed in the outer edge of the cover body, a mounting groove is formed in the middle of the cover body, the mounting groove comprises a first through hole and a second through hole which are communicated with each other, a chamfer is arranged at the joint of the first through hole and the second through hole, and a wiring harness hole is formed in the cover body. Through the application of the novel light-weight upper cover structure, firstly, the outer diameter of the first part is reduced to 46 mm from 58 mm, and a clamp spring structure is canceled and replaced by a chamfer, so that the weight of the upper cover is reduced, the number of parts is reduced, the processing procedure is simplified, and the production cost is reduced; secondly, by canceling the design of an O-shaped ring groove and a boss, the thickness of the upper cover is further reduced, the weight is reduced, meanwhile, the mold structure is simplified, and the production efficiency is improved; in addition, the casting mode of the upper cover is changed from pouring to pressure casting, so that the consistency and the strength of the upper cover are improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of steering gear technology, and in particular to a novel lightweight top cover structure. Background Technology

[0002] With the rapid development of the automotive industry, vehicle lightweighting has become a crucial trend, especially against the backdrop of new energy vehicles and energy conservation and emission reduction. Lightweight design not only improves fuel economy but also effectively extends the driving range of electric vehicles. As a key component of the recirculating ball electric steering system, the lightweight design of its supporting parts is particularly important. The top cover, as a crucial part of the recirculating ball electric steering system, primarily supports the input shaft, fixes sensors, and provides dust and water protection. In traditional designs, the top cover typically uses relatively heavy materials and complex structures to ensure it can withstand sufficient loads and external environmental influences during operation. However, with the increasing demand for vehicle lightweighting, traditional top cover designs can no longer meet the requirements of modern automobiles for lightweight, high strength, and low cost. Utility Model Content

[0003] In view of this, in order to solve the above problems, the purpose of this utility model is to provide a novel lightweight cover structure, including: a cover body, three mounting holes are evenly provided on the outer edge of the cover body, a mounting groove is provided in the middle of the cover body, the mounting groove includes a first through hole and a second through hole that are interconnected, a chamfer is provided at the connection between the first through hole and the second through hole, and a wire harness hole is provided on the cover body.

[0004] In another preferred embodiment, the mounting hole, the mounting groove, and the cover are all circular, the outer contour of the mounting groove is larger than the outer contour of the wire harness hole, and the outer contour of the wire harness hole is larger than the outer contour of the mounting hole.

[0005] In another preferred embodiment, a bolt is provided in the mounting hole, and the cover is connected to the housing of the steering gear by the bolt.

[0006] In another preferred embodiment, the cover includes a first part, a second part, a third part and a fourth part connected in sequence. The outer edge of the third part is evenly provided with three connecting ears. Each connecting ear has a through-hole in the middle. The mounting groove is through-distributed in the first part and the second part. The wire harness hole is through-distributed in the second part.

[0007] In another preferred embodiment, the oil seal of the steering gear is disposed within the mounting groove.

[0008] In another preferred embodiment, the fourth portion extends into the housing.

[0009] In another preferred embodiment, the first portion is cylindrical and has an outer diameter of 46 mm.

[0010] In another preferred embodiment, the diameter of the mounting hole is 6.5 mm.

[0011] The present invention, by adopting the above-mentioned technical solution, has the following positive effects compared with the prior art: Through the application of the present invention, a novel lightweight cover structure is proposed. First, by reducing the outer diameter of the first part from 58mm to 46mm and replacing the snap ring structure with a chamfer, not only is the weight of the cover reduced, but the number of parts and processing steps are also simplified, reducing production costs. Second, by eliminating the O-ring groove and boss design, the thickness of the cover is further reduced, the weight is decreased, and the mold structure is simplified, improving production efficiency. Furthermore, changing the casting method of the cover from casting to die casting not only improves the consistency and strength of the cover but also reduces production costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a novel lightweight top cover structure according to the present invention.

[0013] Figure 2 This is a cross-sectional view of a novel lightweight top cover structure according to the present invention.

[0014] Figure 3 This is a schematic diagram of the structure of the upper cover of the recirculating ball electric steering device in the prior art.

[0015] In the attached image:

[0016] 1. Cover; 2. Mounting hole; 3. Mounting groove; 4. Wiring harness hole; 11. First part; 12. Second part; 13. Third part; 14. Fourth part; 31. Chamfer. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0020] like Figure 1-3 As shown, a novel lightweight cover structure of a preferred embodiment is presented, including: a cover body 1, three mounting holes 2 are evenly provided on the outer edge of the cover body 1, a mounting groove 3 is provided in the middle of the cover body 1, the mounting groove 3 includes a first through hole and a second through hole that are interconnected, a chamfer 31 is provided at the connection between the first through hole and the second through hole, and a wire harness hole 4 is provided on the cover body 1.

[0021] Furthermore, as a preferred embodiment, the cover 1 is preferably manufactured by die casting. Furthermore, die casting helps maintain the consistency of the cover 1 during mass production and helps reduce production costs.

[0022] Furthermore, in a preferred embodiment, the mounting hole 2, the mounting groove 3, and the cover 1 are all circular, the outer contour of the mounting groove 3 is larger than the outer contour of the wire harness hole 4, and the outer contour of the wire harness hole 4 is larger than the outer contour of the mounting hole 2.

[0023] Furthermore, as a preferred embodiment, bolts are provided in the mounting hole 2, and the cover 1 is connected to the outer shell of the steering gear by bolts.

[0024] Furthermore, in a preferred embodiment, the cover 1 includes a first part 11, a second part 12, a third part 13, and a fourth part 14 connected sequentially. The outer edge of the third part 13 is evenly provided with three connecting ears. Each connecting ear has a through-hole 2 formed in its center. A mounting groove 3 is through-holely disposed in the first part 11 and the second part 12. A wire harness hole 4 is through-holely disposed in the second part 12. Further, see... Figure 3 As shown, in the prior art, one end of the wire harness hole 4 is provided with a boss. In this embodiment, the boss is removed from one end of the wire harness hole 4, which helps to reduce the weight of the cover 1 and makes the production and processing of the cover 1 more convenient.

[0025] Furthermore, as a preferred embodiment, the first part 11, the second part 12, the third part 13 and the fourth part 14 are preferably in an integral structure.

[0026] Furthermore, as a preferred embodiment, the outer wall of the second part 12 is smoothly disposed. Further, see... Figure 3 As shown, the upper cover in the prior art has a sealing ring groove. In this embodiment, the sealing ring groove is removed from the outer wall of the second part 12, which helps to reduce the thickness of the outer wall of the second part 12, reduce processing steps, improve production efficiency and reduce production costs.

[0027] Furthermore, in a preferred embodiment, the oil seal of the steering gear is disposed within the mounting groove 3. More specifically, the oil seal is disposed within the first through hole.

[0028] Furthermore, in a preferred embodiment, a bearing is disposed within the second through hole. Furthermore, a chamfer 31 is provided between the second through hole and the first through hole; the edge of the chamfer 31 axially limits the end face of the bearing to prevent the bearing from moving due to axial force during operation.

[0029] Furthermore, as a preferred embodiment, the fourth part 14 extends into the housing.

[0030] Furthermore, in a preferred embodiment, the first portion 11 is cylindrical, and its outer diameter is 46 mm. Further, in the prior art, the outer diameter of the first portion 11 is typically set to 58 mm. The outer diameter of the first portion 11 in this embodiment is smaller than that in the prior art, thereby reducing the weight of the first portion 11.

[0031] Furthermore, as a preferred embodiment, the diameter of the mounting hole 2 is 6.5 mm. Further, in the prior art, the diameter of the mounting hole 2 is typically set to 10.5 mm. The diameter of the mounting hole 2 in this embodiment is reduced compared to the prior art, thereby helping to reduce the volume and weight of the connector ear.

[0032] Furthermore, as a preferred embodiment, when installing the recirculating ball steering gear, first install the oil seal and bearing in the mounting groove 3, and then install bolts in the mounting hole 2 to connect the steering gear housing to the cover 1, so that one end of the steering screw passes through the mounting groove 3 and extends into the housing, and the wiring harness inside the housing passes through the wiring harness hole 4 and connects to other external structures.

[0033] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel lightweight top cover structure, characterized in that, Includes: a cover body, wherein three mounting holes are evenly provided on the outer edge of the cover body, and a mounting groove is provided in the middle of the cover body, wherein the mounting groove includes a first through hole and a second through hole that are interconnected, and a chamfer is provided at the connection between the first through hole and the second through hole, and a wire harness hole is provided on the cover body.

2. The novel lightweight top cover structure according to claim 1, characterized in that, The mounting hole, the mounting groove, and the cover are all circular. The outer contour of the mounting groove is larger than the outer contour of the wire harness hole, and the outer contour of the wire harness hole is larger than the outer contour of the mounting hole.

3. The novel lightweight top cover structure according to claim 1, characterized in that, Bolts are installed in the mounting holes, and the cover is connected to the outer shell of the steering gear through the bolts.

4. The novel lightweight top cover structure according to claim 3, characterized in that, The cover includes a first part, a second part, a third part and a fourth part connected in sequence. The outer edge of the third part is evenly provided with three connecting ears. Each connecting ear has a through-hole in the middle. The mounting groove is through-hole provided in the first part and the second part. The wire harness hole is through-hole provided in the second part.

5. A novel lightweight top cover structure according to claim 1, characterized in that, The oil seal of the steering gear is located in the mounting groove.

6. A novel lightweight top cover structure according to claim 4, characterized in that, The fourth part extends into the outer casing.

7. A novel lightweight top cover structure according to claim 4, characterized in that, The first part is cylindrical and has an outer diameter of 46 mm.

8. A novel lightweight top cover structure according to claim 1, characterized in that, The diameter of the mounting hole is 6.5 mm.

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