CN211009625U

CN211009625U - Aluminum shell steering column spline shaft sealing structure

Info

Publication number: CN211009625U
Application number: CN201921278407.5U
Authority: CN
Inventors: 李凯; 李秀梅; 相东; 胡安辉; 徐飞扬
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-07-14
Anticipated expiration: 2029-08-08

Abstract

The utility model belongs to the technical field of the car, specific aluminium casing steering column integral key shaft seal structure that says so. The structure comprises a dust cover outer sleeve and a spline shaft inner sleeve; the outer sleeve of the dust cover is provided with a spline assembly notch of the outer sleeve of the dust cover and a first clamping limiting structure and a second clamping limiting structure; the inner sleeve of the spline shaft is provided with a technical notch of the inner sleeve of the dust cover; the lower steering shaft penetrates into the outer sleeve of the dust cover through the spline assembly notch of the outer sleeve of the dust cover; the inner sleeve of the spline shaft is sleeved into the lower steering shaft through the technical notch of the inner sleeve of the dust cover; the inner sleeve of the spline shaft is clamped and limited through an annular first clamping limiting structure in the outer sleeve of the dust cover; the lower steering shaft is connected with the upper steering shaft through a spline and is clamped with the second clamping limiting structure through the clamping groove of the outer sleeve of the dust cover; the upper steering shaft is sleeved with an elastic bearing. The utility model discloses having considered regulation, the motion of tubular column self and having ulcerated the post state of contracting, guaranteed that the homoenergetic satisfies the sealed of spline department under various states, the anticreep is effectual, simplified process, reduce cost, improvement economic benefits.

Description

Aluminum shell steering column spline shaft sealing structure

Technical Field

The utility model belongs to the technical field of the car, specific aluminium casing steering column integral key shaft seal structure that says so.

Background

In the prior art, the dustproof and waterproof design at the spline is not fully considered in the design of the aluminum shell steering column, and dust, water drops and the like are generated and attached to the spline when people get on or off the vehicle, drive the vehicle and clean the vehicle, so that the performance of the steering column is reduced, parts rust and the quality of the whole vehicle is reduced. The invention can effectively solve the problems.

Referring to fig. 1, in the prior art, most of the existing technologies are that there is no sealing structure at the spline position of the upper and lower tubular columns, and there is a larger gap, i.e., a gap 8 at the spline position, and the gap is directly connected through a common steel bearing 6 or an elastic bearing, so that the overall rigidity and natural frequency of the tubular column are increased, and the spline position is not sealed; in the prior art, a steel bearing 6 and a metal elastic sheet 7 are adopted, so that the weight is heavy; and is also relatively high in cost.

Disclosure of Invention

The utility model provides a simple structure's aluminium casing steering column integral key shaft seal structure has filled the current blank that does not have seal structure in tubular column's spline position from top to bottom.

The technical scheme of the utility model is explained as follows with the attached drawings:

a kind of aluminium shell steering column integral key shaft seal structure, this structure includes the outer cover 1 of dust cover and integral key shaft inner race 2; one end of the dust cover outer sleeve 1 is provided with a dust cover outer sleeve spline assembly notch 11, the inner wall of the dust cover outer sleeve is provided with a first clamping limiting structure 13 with a convex structure, and the inner wall of the other end of the dust cover outer sleeve is provided with a second clamping limiting structure 12 with a convex structure; one end of the spline shaft inner sleeve 2 is provided with a dust cover inner sleeve process notch 21; the lower steering shaft 3 penetrates into the dust cover outer sleeve 1 through a dust cover outer sleeve spline assembly notch 11; the spline shaft inner sleeve 2 is sleeved into the lower steering shaft 3 through the dust cover inner sleeve process notch 21; the spline shaft inner sleeve 2 is attached to the inner part of the dust cover outer sleeve 1 and is clamped and limited through an annular first clamping limiting structure 13 in the dust cover outer sleeve 1; the lower steering shaft 3 is connected with the upper steering shaft 4 through a spline and is clamped with the second clamping limiting structure 12 through a dust cover outer sleeve clamping groove 41 arranged at one end of the upper steering shaft 4; the upper steering shaft 4 is sleeved with an elastic bearing 5.

The dust cover outer sleeve 1 is made of a nylon material; the spline shaft inner sleeve 2 is made of a nylon material or a rubber material.

The utility model has the advantages that:

1. the utility model is directly acted on the spline connection part of the upper steering column and the lower steering column, and the adjustment, the movement and the post-collapse state of the tubular column are considered, so that the sealing of the spline part can be ensured to be satisfied under various states; the spline sealing structure has good anti-falling effect, simplifies the process, reduces the cost and improves the economic benefit;

2. the utility model discloses a be the support of elastic bearing about the spline connection department about as the steering spindle, reduce about 10% at least in weight, can be lower in the cost to the leakproofness of spline position is better.

Drawings

FIG. 1 is a schematic structural view of a conventional aluminum housing steering column;

FIG. 2 is a schematic structural view of the aluminum shell steering column assembly of the present invention;

FIG. 3 is a schematic cross-sectional view of the aluminum shell steering column assembly of the present invention;

FIG. 4 is a schematic structural view of the present invention;

fig. 5 is a schematic sectional view of a part of the structure of the present invention.

In the figure: 1. a dust cover outer sleeve; 11. a spline assembly notch is sleeved outside the dust cover; 12. a first clamping limiting structure; 13. a second clamping limiting structure; 2. the spline shaft is sleeved with an inner sleeve; 21. a process notch is arranged in the dust cover; 3. a lower steering shaft; 4. an upper steering shaft; 41. the outer sleeve of the dust cover is clamped with the groove; 5. an elastic bearing; 6. a steel bearing; 7. a metal spring sheet; 8. and a gap is reserved at the spline.

Detailed Description

Referring to fig. 2-4, the sealing structure of the spline shaft of the steering column of the aluminum shell comprises an outer sleeve 1 of the dust cover and an inner sleeve 2 of the spline shaft; one end of the dust cover outer sleeve 1 is provided with a dust cover outer sleeve spline assembly notch 11, the inner wall of the dust cover outer sleeve is provided with a first clamping limiting structure 13 with a convex structure, and the inner wall of the other end of the dust cover outer sleeve is provided with a second clamping limiting structure 12 with a convex structure; one end of the spline shaft inner sleeve 2 is provided with a dust cover inner sleeve process notch 21; the lower steering shaft 3 penetrates into the dust cover outer sleeve 1 through a dust cover outer sleeve spline assembly notch 11; the spline shaft inner sleeve 2 is sleeved into the lower steering shaft 3 through the dust cover inner sleeve process notch 21; the spline shaft inner sleeve 2 is attached to the inner part of the dust cover outer sleeve 1 and is clamped and limited through an annular first clamping limiting structure 13 in the dust cover outer sleeve 1; the lower steering shaft 3 is connected with the upper steering shaft 4 through a spline and is clamped with the second clamping limiting structure 12 through a dust cover outer sleeve clamping groove 41 arranged at one end of the upper steering shaft 4; the upper steering shaft 4 is sleeved with an elastic bearing 5, and the outside of the elastic bearing 5 is matched with the upper column tube.

The sealing structure directly acts on the spline connection part of the upper steering column and the lower steering column, and the adjustment, movement and post-collapse states of the column are considered, so that the sealing of the spline part can be met in various states; the spline sealing structure has good anti-falling effect, simplifies the process, reduces the cost and improves the economic benefit; meanwhile, the elastic bearing 5 is used as a support for the connection part of the upper spline and the lower spline of the steering column, the weight is reduced by at least about 10%, the cost is lower, and the sealing performance of the spline position is better.

Claims

1. A spline shaft sealing structure of an aluminum shell steering column is characterized by comprising a dust cover outer sleeve (1) and a spline shaft inner sleeve (2); one end of the dust cover outer sleeve (1) is provided with a dust cover outer sleeve spline assembly notch (11), the inner wall of the dust cover outer sleeve is provided with a first clamping limiting structure (13) which is a convex structure, and the inner wall of the other end of the dust cover outer sleeve is provided with a second clamping limiting structure (12) which is a convex structure; one end of the spline shaft inner sleeve (2) is provided with a dust cover inner sleeve process notch (21); the lower steering shaft (3) penetrates into the dust cover outer sleeve (1) through a dust cover outer sleeve spline assembly notch (11); the spline shaft inner sleeve (2) is sleeved into the lower steering shaft (3) through a dust cover inner sleeve process notch (21); the spline shaft inner sleeve (2) is attached to the inner part of the dust cover outer sleeve (1) and is clamped and limited through an annular first clamping limiting structure (13) in the dust cover outer sleeve (1); the lower steering shaft (3) is connected with the upper steering shaft (4) through a spline, and is clamped with the second clamping limiting structure (12) through a clamping groove (41) of the outer cover of the dust cover arranged at one end of the upper steering shaft (4); and the upper steering shaft (4) is sleeved with an elastic bearing (5).

2. The aluminum housing steering column spline shaft sealing structure according to claim 1, wherein the dust cover outer sleeve (1) is made of nylon material; the spline shaft inner sleeve (2) is made of a nylon material or a rubber material.