Multi-stage sealing automobile steering gear box shell
By designing a multi-stage sealing structure on the steering gear housing, and using seals and dustproof components to form a multi-layer seal, the wear problem caused by the single seal design in traditional systems is solved, resulting in better sealing performance and extended service life.
Patent Information
- Application Number
- CN202520586601.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-31
AI Technical Summary
Traditional steering gear housings have a simple sealing design, making it difficult to operate stably for a long time under complex working conditions. Insufficient internal sealing leads to severe wear from foreign objects, reducing service life.
A multi-stage sealing structure was designed, including a seal, a dustproof component, and a sealing plug. By setting limiting grooves and convex rings at both ends of the steering gear housing, a multi-layer seal is formed using components such as a sealing sleeve, a fixing ring, a sealing ring, a dustproof sleeve, an inner overlapping ring, and an outer overlapping ring, thereby enhancing the sealing effect.
It improves the sealing performance of the steering gear housing, reduces wear on internal parts, and extends service life.
Smart Images
Figure CN223821781U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of direction machine shell, concretely is a multistage sealed automobile direction machine shell. BACKGROUND
[0002] The automobile direction machine is the core component of the vehicle steering system, and its performance is directly related to the driving safety and the control experience. The direction machine shell, as an important part of the direction machine, not only needs to provide stable support for the internal gear rack, but also needs to have excellent sealing performance to prevent external dust, water vapor and impurities from entering, while avoiding internal lubricating oil leakage.
[0003] However, the sealing design of the traditional direction machine shell still has many deficiencies in actual use, and it is difficult to meet the long-term stable operation demand under complex working conditions. The traditional sealing level is single, the outside is only dustproof by the dustproof sleeve, and the internal sealing is insufficient to form multilayer sealing, which further causes the internal to be seriously worn by foreign matters during long-term use and steering, reducing the service life. UTILITY MODEL CONTENTS
[0004] In view of the deficiencies of the prior art, the utility model provides a multistage sealed automobile direction machine shell, which solves the problems raised in the above background art.
[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a multistage sealed automobile direction machine shell, comprising a direction machine shell, the two ends of the direction machine shell are provided with a dustproof sleeve, the upper end of the direction machine shell is fixed with an oil filling port, the two ends of the direction machine shell are provided with a limiting groove, a sealing element is sleeved in the limiting groove, a direction guide rod is slidably arranged in the direction machine shell, the sealing element is arranged on the outer side wall of the direction guide rod, the inner side end of the limiting groove is fixed with a convex ring, the convex ring is fixedly connected with the direction machine shell, a dustproof element is sleeved on the convex ring, and the dustproof element is arranged on the outer side wall of the direction guide rod.
[0006] Further, the sealing element comprises a sealing sleeve, a fixed ring is fixedly arranged on the outer side of the sealing sleeve, the fixed ring is matched with the limiting groove, and sealing rings are fixedly connected at the two ends of the outer side of the sealing sleeve.
[0007] Further, the dustproof element comprises a fixed sleeve, the fixed sleeve is sleeved and fixed on the convex ring, an inner overlapping ring is fixedly connected with the outer side end of the fixed sleeve, the inner side end of the inner overlapping ring is arranged in abutment with the outer side wall of the direction guide rod, an outer overlapping ring is fixed at the end of the inner overlapping ring, and the end of the outer overlapping ring is arranged in abutment with the inner wall of the limiting groove.
[0008] Further, the dust cover is fixedly connected with a sealing plug at one end close to the direction machine shell, and the sealing plug has an outer diameter not less than the inner diameter of the two ends of the direction machine shell.
[0009] Further, the end of the outer ring is fixedly connected with a compression ring, and the outer end of the compression ring is arranged against the inner side wall of the limiting groove.
[0010] Further, the outer end of the sealing sleeve is arc-shaped.
[0011] Further, the cross section of the sealing ring is elliptical.
[0012] The utility model provides a kind of multistage sealing automobile direction machine shell.Compared with prior art, it has the following beneficial effects:
[0013] The multistage sealing automobile direction machine shell;By setting sealing element, dustproof element and sealing plug, the two ends of the direction machine shell are formed multistage sealing, to make the working environment more lubricated, reduce the wear of internal parts, improve service life. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the overall structure schematic diagram of the utility model;
[0015] Figure 2 It is the structure schematic diagram of direction machine shell, dust cover and oil inlet of the utility model;
[0016] Figure 3 It is Figure 2 It is the structure schematic diagram of the utility model enlarged in A place;
[0017] Figure 4 It is the structure schematic diagram of sealing element of the utility model;
[0018] Figure 5 It is the structure schematic diagram of dustproof element of the utility model.
[0019] In the drawing: 1, direction machine shell;2, dust cover;3, oil inlet;4, direction guide rod;5, limiting groove;6, sealing sleeve;7, fixed ring;8, sealing ring;9, convex ring;10, fixed sleeve;11, inner ring;12, outer ring;13, compression ring;14, sealing plug. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0021] Referring to Figures 1-5 The utility model provides a technical scheme: a kind of multistage sealing automobile steering machine shell, including steering machine shell 1, dust cover 2 is provided at the both ends of steering machine shell 1, oil filler 3 is fixed at the upper end of steering machine shell 1, limit slot 5 is opened at the both ends of steering machine shell 1, sealing element is sleeved in limit slot 5, direction guide rod 4 is slidably arranged in steering machine shell 1, sealing element is located the outside wall of direction guide rod 4 setting, the inner side end of limit slot 5 is fixed with convex ring 9, convex ring 9 is fixedly connected with steering machine shell 1, dustproof element is sleeved on convex ring 9, dustproof element is located the outside wall of direction guide rod 4 setting;The both ends of steering machine shell 1 are sealed by dust cover 2 in prior art, limit slot 5 is opened at the both ends of steering machine shell 1, the inside of limit slot 5 is opened as a plurality of grooves setting, sealing element is arranged in limit slot 5, internal sealing is formed by sealing element, avoid foreign matter to enter the inside of steering machine shell 1, and dustproof element is arranged in the depth of limit slot 5, further second layer protection is formed by dustproof element, further improve the sealing effect inside steering machine shell 1.
[0022] As Figure 3 Sealing element includes sealing sleeve 6, fixed ring 7 is fixed in the middle of the outside of sealing sleeve 6, fixed ring 7 is matched with limit slot 5, sealing ring 8 is fixedly connected with the both ends of the outside of sealing sleeve 6, sealing ring 8 is matched with limit slot 5;Sealing sleeve 6 is fixed in limit slot 5 by fixed ring 7, sealing ring 8 is fixed at the both ends of the outside ring of sealing sleeve 6, sealing ring 8 is also matched with limit slot 5 and is embedded, so that multistage sealing effect is formed by sealing sleeve 6, fixed ring 7 and sealing ring 8, and better sealing performance is achieved.
[0023] As Figure 3 Dustproof element includes fixed sleeve 10, fixed sleeve 10 is fixedly sleeved on convex ring 9, inner overlapping ring 11 is fixedly connected with the outside end of fixed sleeve 10, inner overlapping ring 11 is abutted with the outside wall of direction guide rod 4 at the inside end, outer overlapping ring 12 is fixed at the end of inner overlapping ring 11, and outer overlapping ring 12 is abutted with the inner wall of limit slot 5 at the end;Fixed sleeve 10 is connected with convex ring 9 by sleeving, inner overlapping ring 11 and outer overlapping ring 12 at the outer end of fixed sleeve 10 can block dust and water-oil mixture from outside, to form stable sealing effect, and sealing cooperation is formed with sealing element, to achieve multistage sealing effect and form sealing.
[0024] As Figure 3As shown, the dust cover 2 is fixedly connected with a sealing plug 14 near one end of the steering machine shell 1, the outer diameter of the sealing plug 14 is not less than the inner diameter of the two ends of the steering machine shell 1; the sealing plug 14 fixedly connected with the dust cover 2 near one end of the steering machine shell 1 can block the dust and foreign matter in the dust cover 2, the outer diameter of the sealing plug 14 is not less than the inner diameter of the two ends of the steering machine shell 1, forming a staggered sealing effect.
[0025] As shown in Figure 3 , the end of the outer ring 12 is fixedly connected with a compression ring 13, the outer end of the compression ring 13 is arranged against the inner wall of the limiting groove 5; the compression ring 13 at the outer end of the outer ring 12 stably fixes the dustproof member in the limiting groove 5 through the compression ring 13, the compression ring 13 is elastically outwardly abutted, thereby forming a stable extrusion fixation.
[0026] As shown in Figure 3 and Figure 4 , the outer end of the sealing sleeve 6 is arc-shaped, the arc-shaped outer end can reduce the entry of foreign matter and dust, and improve the overall sealing performance.
[0027] As shown in Figure 3 , the cross section of the sealing ring 8 is elliptical; the cross section of the sealing ring 8 is elliptical, which can increase the elasticity and sealing performance of the sealing ring 8, so that the sealing ring 8 can form a stable sealing effect in the limiting groove 5.
Claims
1. A multi-stage sealed automotive steering gear housing, comprising a steering gear housing (1), wherein dust covers (2) are provided at both ends of the steering gear housing (1), and an oil inlet (3) is fixed at the upper end of the steering gear housing (1), characterized in that, The steering gear housing (1) has limit grooves (5) at both ends. A sealing element is fitted inside the limit groove (5). A steering guide rod (4) is slidably installed inside the steering gear housing (1). The sealing element is located on the outer side wall of the steering guide rod (4). A convex ring (9) is fixed to the inner end of the limit groove (5). The convex ring (9) is fixedly connected to the steering gear housing (1). A dustproof element is fitted on the convex ring (9). The dustproof element is located on the outer side wall of the steering guide rod (4).
2. The multi-stage sealed automotive steering gear housing according to claim 1, characterized in that, The sealing element includes a sealing sleeve (6), a fixing ring (7) is fixed in the middle of the outer side of the sealing sleeve (6), the fixing ring (7) is matched with the limiting groove (5), and sealing rings (8) are fixedly connected to both ends of the outer side of the sealing sleeve (6), the sealing rings (8) are matched with the limiting groove (5).
3. The multi-stage sealed automotive steering gear housing according to claim 2, characterized in that, The dustproof component includes a fixing sleeve (10), which is fixedly fitted on the convex ring (9). An inner overlapping ring (11) is fixedly connected to the outer end of the fixing sleeve (10). The inner end of the inner overlapping ring (11) abuts against the outer wall of the direction guide rod (4). An outer overlapping ring (12) is fixed to the end of the inner overlapping ring (11). The end of the outer overlapping ring (12) abuts against the inner wall of the limiting groove (5).
4. The multi-stage sealed automotive steering gear housing according to claim 2, characterized in that, The dust cover (2) is fixedly connected to a sealing plug (14) at one end near the steering gear housing (1), and the outer diameter of the sealing plug (14) is not less than the inner diameter of both ends of the steering gear housing (1).
5. The multi-stage sealed automotive steering gear housing according to claim 3, characterized in that, The outer stacked ring (12) is fixedly connected to a pressure ring (13) at its end, and the outer end of the pressure ring (13) abuts against the inner sidewall of the limiting groove (5).
6. The multi-stage sealed automotive steering gear housing according to claim 2, characterized in that, The outer end of the sealing sleeve (6) is arc-shaped.
7. The multi-stage sealed automotive steering gear housing according to claim 2, characterized in that, The sealing ring (8) has an elliptical cross-section.