Steering nut assembly with buckle type sealing cover

Abstract

The utility model relates to the technical field of automobile steering systems, in particular to a steering nut assembly with a buckle type sealing cover, which comprises a steering nut body and the buckle type sealing cover, two ends of an inner hole of the steering nut body are respectively provided with a circle of groove, and the buckle type sealing cover comprises a sealing cover body and a buckle. A plurality of buckles are arranged at the positions of the ribs on the edge of the sealing cover body, the sealing cover body covers the end of an inner hole of the steering nut body, protruding parts of the outer ends of the buckles are buckled into the grooves, and the contact faces of the grooves and the buckles are planes. Compared with the prior art, the buckle type sealing cover is adopted to replace a thrust ring, so that the number of parts is reduced, the part cost is saved, the assembly process is simplified, and the assembly efficiency is improved; the groove of the steering nut body adopts a plane structure, so that the processing difficulty is reduced; a thrust ring is omitted, noise caused by thrust ring assembly or part quality problems can be prevented, and the driving experience of terminal customers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile steering systems, in particular to a steering nut assembly provided with a snap-on sealing cover. Background Art

[0002] The steering gear has gradually developed from the original hydraulic steering gear and mechanical steering gear to the electronic power steering gear.

[0003] Electronic power steering has many advantages such as stronger load-bearing capacity, higher sensitivity, better hand feel, and greater environmental protection and energy saving.

[0004] The electronic power steering gear is divided into a dual-gear electronic power steering gear and a parallel-axis electronic power steering gear. Compared with the dual-gear electronic power steering gear, the parallel-axis electronic power steering gear has a higher load-bearing capacity and can generally meet the rack force requirements of the vehicle within 20KN. An important component in the parallel-axis electronic steering gear is the steering nut subassembly.

[0005] The steering nut assembly is a key component of the parallel axis electric power steering system. The cost of the parts and the assembly process have a significant impact on the production of the steering gear.

[0006] In traditional steering nut assemblies, it is necessary to assemble the sealing cover first and then the thrust ring to fix the sealing cover. One set of steering nut assemblies requires two thrust rings, which increases the assembly process and production line cycle time, affecting the assembly efficiency of the production line.

[0007] During the assembly process of the thrust ring, due to improper assembly of the production line or excessive thrust ring size and clamping force, a gap is generated between the sealing cover and the steering nut body, causing the sealing cover to move back and forth, resulting in severe wear and tear, causing noise problems, and ultimately leading to complaints from end customers.

[0008] In addition, the groove of the traditional steering nut body needs to be processed into an inclined surface to accommodate the snap spring, which makes the processing difficult.

[0009] Therefore, it is necessary to design a steering nut assembly with a snap-on sealing cover to save parts cost, improve assembly efficiency, reduce processing difficulty, and solve the noise problem caused by thrust ring assembly. Summary of the invention

[0010] The utility model aims to overcome the deficiencies of the prior art and provides a steering nut assembly provided with a snap-on sealing cover to save parts costs, improve assembly efficiency, reduce processing difficulty, and solve the noise problem caused by thrust ring assembly.

[0011] In order to achieve the above-mentioned purpose, the utility model is a steering nut assembly provided with a snap-on sealing cover, comprising a steering nut body and a snap-on sealing cover, wherein a circle of grooves are respectively arranged at both ends of the inner hole of the steering nut body, the snap-on sealing cover comprises a sealing cover body and a snap, and a plurality of snaps are arranged at the rib position of the edge of the sealing cover body, the sealing cover body covers the end of the inner hole of the steering nut body, the outer end protruding part of the snap is snapped into the groove, and the contact surface between the groove and the snap is a plane.

[0012] The groove is arranged along the circumferential direction of the hole wall of the inner hole of the steering nut body.

[0013] The buckles are 8 plastic buckles, and every two plastic buckles form a group, and four groups of plastic buckles are evenly distributed in the circumferential direction of the sealing cover body.

[0014] A gap is provided between the inner end of the buckle and the sealing cover body.

[0015] Compared with the prior art, the utility model adopts a snap-on sealing cover to replace the thrust ring, which reduces the number of parts, saves part costs, simplifies the assembly process, and improves assembly efficiency; the groove of the steering nut body adopts a planar structure, which reduces the processing difficulty; the thrust ring is eliminated, which can prevent noise caused by thrust ring assembly or part quality problems, and enhance the driving experience of end customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the snap-on sealing cover of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the steering nut body of the utility model. DETAILED DESCRIPTION

[0019] The utility model is now further described with reference to the accompanying drawings.

[0020] See also Figure 1 , Figure 2 and Figure 3 The utility model is a steering nut assembly provided with a snap-on sealing cover, comprising a steering nut body and a snap-on sealing cover. A circle of grooves 11 are respectively provided at both ends of the inner hole of the steering nut body 1. The snap-on sealing cover 2 comprises a sealing cover body 21 and snaps 22. A plurality of snaps 22 are provided at the rib position of the edge of the sealing cover body 21. The sealing cover body 21 covers the inner hole end of the steering nut body 1. The outer end protrusion 221 of the snaps 22 is buckled into the groove 11 to ensure that the snap-on sealing cover 2 is tightly fitted to the steering nut body 1 after being assembled to prevent it from falling out. The contact surface between the groove 11 and the snaps 22 is a plane.

[0021] The planar structure makes the assembly of the steering nut body 1 and the buckle-type sealing cover 2 tighter and easier to process, and basically does not affect the processing method and price of the nut body 1. The setting of the buckle 22 does not affect the mold opening structure of the sealing cover body 21, the weight of the parts changes little, and basically does not affect the product mold structure and product unit price.

[0022] The groove 11 is arranged along the circumferential direction of the inner hole wall of the steering nut body 1 .

[0023] The buckles 22 are 8 plastic buckles, and every two plastic buckles form a group. The four groups of plastic buckles are evenly distributed in the circumferential direction of the sealing cover body 21, so that the steering nut body 1 and the snap-on sealing cover 2 fit more tightly and the force is more evenly applied. The plastic parts have stronger wear resistance and impact resistance, and can still withstand higher clamping force after durability.

[0024] A gap is provided between the inner end of the buckle 22 and the sealing cover body 21 , which has a certain elasticity during assembly, thereby ensuring that the assembly process of the buckle-type sealing cover 2 is smoother.

[0025] The utility model adopts a snap-on sealing cover to replace the thrust ring, which reduces the number of parts, saves part costs, simplifies the assembly process, and improves assembly efficiency; the groove design of the steering nut body is a plane structure, which reduces the difficulty of processing; the removal of the thrust ring can prevent noise caused by thrust ring assembly or part quality problems, and improve the driving experience of end customers. The utility model has the advantages of good connection performance, tight fit, easy implementation, reduced equipment investment, and accelerated production cycle.

Claims

1. A steering nut assembly provided with a snap-on sealing cover, comprising a steering nut body and a snap-on sealing cover, characterized in that: A circle of grooves (11) are respectively provided at both ends of the inner hole of the steering nut body (1). The snap-on sealing cover (2) comprises a sealing cover body (21) and a snap-on (22). A plurality of snap-ons (22) are provided at the rib position of the edge of the sealing cover body (21). The sealing cover body (21) covers the end of the inner hole of the steering nut body (1). The outer end protrusion (221) of the snap-on (22) is snapped into the groove (11). The contact surface between the groove (11) and the snap-on (22) is a plane.

2. A steering nut assembly with a snap-on sealing cover according to claim 1, characterized in that: The groove (11) is arranged along the circumferential direction of the inner hole wall of the steering nut body (1).

3. A steering nut assembly with a snap-on sealing cover according to claim 1, characterized in that: The buckles (22) are 8 plastic buckles, and two plastic buckles form a group, and four groups of plastic buckles are evenly distributed in the circumferential direction of the sealing cover body (21).

4. A steering nut assembly with a snap-on sealing cover according to claim 1, characterized in that: A gap is provided between the inner end of the buckle (22) and the sealing cover body (21).

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