阅读说明：本技术 抗压型转向防护罩 (Pressure-resistant steering protective cover ) 是由 许峰 汤峰 汪松 方毅明 阮宏胜 于 2021-08-24 设计创作，主要内容包括：本发明公开抗压型转向防护罩,包括第一安装端、第二安装端以及设置于第一安装端与第二安装端之间的弹性波纹罩,所述弹性波纹罩与第一安装端连接处的斜面上周向均布有若干加强筋,所述弹性波纹罩沿轴向设置有若干向外侧凸出的波峰段,所述弹性波纹罩沿轴向设置有若干向内侧凹陷的波谷段,若干所述波谷段上均固定安装有若干固定筋。本发明通过在弹性波纹罩端部的斜面上设置四个加强筋,增强了弹性波纹罩斜面的强度,抵制高温高压产生的变形,同时防止弹性波纹罩伸缩运动时,斜面塌陷造成异响,影响该防护罩的使用,相邻的两个波谷段之间交错设置的若干固定筋,提高了弹性波纹罩的强度,增加了防护罩抵抗高温变形的能力。(The invention discloses a pressure-resistant steering protective cover which comprises a first mounting end, a second mounting end and an elastic corrugated cover arranged between the first mounting end and the second mounting end, wherein a plurality of reinforcing ribs are uniformly distributed on the inclined plane at the joint of the elastic corrugated cover and the first mounting end in the circumferential direction, a plurality of wave crest sections protruding outwards are arranged on the elastic corrugated cover along the axial direction, a plurality of wave trough sections recessed inwards are arranged on the elastic corrugated cover along the axial direction, and a plurality of fixing ribs are fixedly arranged on the wave trough sections. The four reinforcing ribs are arranged on the inclined plane at the end part of the elastic corrugated cover, so that the strength of the inclined plane of the elastic corrugated cover is enhanced, the deformation generated by high temperature and high pressure is resisted, the abnormal sound caused by the collapse of the inclined plane when the elastic corrugated cover moves telescopically is prevented, the use of the protective cover is influenced, the plurality of fixing ribs are arranged between two adjacent wave trough sections in a staggered mode, the strength of the elastic corrugated cover is improved, and the high-temperature deformation resistance of the protective cover is improved.)

1. The pressure-resistant steering protective cover is characterized by comprising a first mounting end (10), a second mounting end (30) and an elastic corrugated cover (20) arranged between the first mounting end (10) and the second mounting end (30), a plurality of reinforcing ribs (202) are circumferentially and uniformly distributed on the inclined plane (201) at the joint of the elastic corrugated cover (20) and the first mounting end (10), the elastic corrugated cover (20) is provided with a plurality of wave peak sections (204) protruding outwards along the axial direction, and a plurality of wave trough sections (205) which are sunken towards the inner side, a plurality of fixing ribs (203) are fixedly arranged on the plurality of wave trough sections (205), a plurality of sealing convex ribs I (101) which are in interference fit with the steering gear pull rod are arranged in the first mounting end (10), and a plurality of second sealing convex ribs (301) which are in interference fit with the steering engine shell are arranged in the second mounting end (30).

2. The crush-resistant steering shield according to claim 1, wherein a plurality of the peak segments (204) are staggered with a plurality of the valley segments (205).

3. The pressure-resistant steering shield according to claim 2, wherein the number of the fixing ribs (203) is four, the fixing ribs (203) between two adjacent wave trough sections (205) are axially staggered, and the staggered angle is 45 degrees.

4. The pressure-resistant steering shield according to claim 1, wherein the plurality of reinforcing ribs (202) are arranged at equal intervals, and the number of the reinforcing ribs (202) is four.

5. The crush-resistant steering shield according to claim 1, wherein the diameter of the end of the resilient bellows (20) connected to the first mounting end (10) and the diameter of the end of the resilient bellows (20) connected to the second mounting end (30) are each smaller than the diameter of the middle of the resilient bellows (20).

6. The pressure-resistant steering protective cover according to claim 1, wherein a plurality of grooves (302) are formed in the outer side of the second mounting end (30), and the plurality of grooves (302) correspond to the plurality of second sealing ribs (301) in a one-to-one manner.

7. The crush-resistant steering shield according to claim 1, wherein the first mounting end (10), the second mounting end (30) and the resilient bellows (20) are formed from a thermoplastic vulcanizate having a shore D hardness of 41 degrees.

Technical Field

The invention relates to the technical field of automobile parts, in particular to a pressure-resistant steering protective cover.

Background

The automobile steering device is an important part on an automobile, a gear in the steering device is controlled by a steering wheel of a steering machine to drive a rack matched with the steering device to move left and right, the rack drives a steering wheel to swing to complete steering, in order to ensure normal use of the steering machine, a protective cover is generally sleeved on a shell of the automobile steering device, the protective cover mainly plays a role in protecting a steering ball head on the steering machine from dust and water, and the quality of the protective cover directly influences various steering working states of the steering machine.

Among the prior art, conventional dust cover is in compression and tensile state because of the alternative in the use, and the fixed shakiness that causes the dust cover in its junction influences the leakproofness of dust cover, and individual motorcycle type leads to the temperature higher because of engine power is big, little with peripheral distance simultaneously to influence the steering gear protection casing on the steering wheel steering gear of engine storehouse and driver's cabin, the protection casing receives the influence of high temperature and produces deformation, cave in, influences the service strength of protection casing, greatly reduced product life.

Disclosure of Invention

The invention aims to provide a pressure-resistant steering protective cover, which solves the following technical problems:

(1) conventional steering gear shields cannot resist high temperature deformation;

(2) the conventional steering gear protective cover is low in connection strength and poor in sealing property.

The purpose of the invention can be realized by the following technical scheme:

the pressure-resistant steering protective cover comprises a first installation end, a second installation end and an elastic corrugated cover arranged between the first installation end and the second installation end, wherein a plurality of reinforcing ribs are uniformly distributed on the inclined plane of the joint of the elastic corrugated cover and the first installation end in the circumferential direction, the elastic corrugated cover is provided with a plurality of convex wave crest sections towards the outer side along the axial direction, the elastic corrugated cover is provided with a plurality of wave trough sections which are concave towards the inner side along the axial direction and is provided with a plurality of fixed ribs, the first installation end is internally provided with a plurality of sealing convex ribs I in interference fit with a steering gear pull rod, and the second installation end is internally provided with a plurality of sealing convex ribs II in interference fit with a steering gear shell.

As a further scheme of the invention, a plurality of the wave crest sections and a plurality of the wave trough sections are arranged in a staggered mode.

As a further scheme of the invention, the number of the fixed ribs is four, the fixed ribs between two adjacent wave trough sections are axially staggered, and the staggered angle is 45 degrees.

As a further scheme of the invention, a plurality of reinforcing ribs are arranged at equal intervals, and the number of the reinforcing ribs is four.

As a further scheme of the invention, the diameter of one end of the elastic corrugated cover connected with the first mounting end and the diameter of one end of the elastic corrugated cover connected with the second mounting end are both smaller than the diameter of the middle part of the elastic corrugated cover.

As a further scheme of the invention, the depth of the wave trough section of one end of the elastic corrugated cover, which is close to the first mounting end, to the middle part of the elastic corrugated cover is greater than that of the other wave trough sections.

As a further scheme of the invention, a plurality of grooves are formed on the outer side of the second mounting end, and the grooves correspond to the sealing ribs one by one.

As a further aspect of the present invention, the first mounting end, the second mounting end and the elastic bellows are made of thermoplastic vulcanized elastomer with shore D hardness of 41 degrees.

The invention has the beneficial effects that:

(1) according to the pressure-resistant steering protective cover, the first mounting end and the second mounting end are respectively provided with the first sealing convex rib and the second sealing convex rib, the first mounting end is in interference fit with a steering gear pull rod through the first sealing convex rib, and the second mounting end is in interference fit with a steering gear shell through the second sealing convex rib, so that the sealing property of the joint is improved, and the high sealing requirement of the protective cover is met;

(2) the four reinforcing ribs are arranged on the inclined plane at the end part of the elastic corrugated cover, so that the strength of the inclined plane of the elastic corrugated cover is enhanced, the deformation generated by high temperature and high pressure is resisted, and meanwhile, the abnormal sound caused by the collapse of the inclined plane when the elastic corrugated cover moves telescopically is prevented from influencing the use of the protective cover;

(3) the elastic corrugated cover is provided with a plurality of wave trough sections and wave crest sections, and the wave crest sections and the wave trough sections which are arranged in a staggered mode meet the requirement of the elastic corrugated cover on the telescopic working condition;

(4) elastic ripple cover is from first installation end to elastic ripple cover middle part transition part and elastic ripple cover middle part, and its trough section degree of depth is darker for the bulb is when with elastic ripple cover internal contact, and the trough section withstands the bulb, has increased elastic ripple cover's resistance to deformation holding power, and a plurality of fixed muscle of crisscross setting between two adjacent trough sections have improved elastic ripple cover's intensity, have increased the ability that the protection casing resisted high temperature deformation.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic view of the construction of a crush-resistant steering shield of the present invention;

FIG. 2 is a top view of the crush resistant steering shield of the present invention;

FIG. 3 is a cut-away view of FIG. 2A-A;

FIG. 4 is an enlarged view at B in FIG. 3;

fig. 5 is an enlarged view at C in fig. 3.

In the figure: 10. a first mounting end; 101. sealing the convex rib I; 20. an elastic bellows cover; 201. a bevel; 202. reinforcing ribs; 203. fixing the ribs; 204. a peak band; 205. a wave trough section; 30. a second mounting end; 301. sealing the convex rib II; 302. and (4) a groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention is a pressure-resistant steering shield, including a first mounting end 10, a second mounting end 30 and an elastic bellows 20, wherein the elastic bellows 20 is disposed between the first mounting end 10 and the second mounting end 30, a diameter of an end of the elastic bellows 20 connected to the first mounting end 10 is the smallest, a diameter of a middle portion of the elastic bellows 20 is the largest, and a diameter of an end of the elastic bellows 20 connected to the second mounting end 30 is smaller than a diameter of the middle portion of the elastic bellows 20.

Specifically, the end portion of the elastic corrugated cover 20 is provided with a plurality of reinforcing ribs 202, the number of the reinforcing ribs 202 is four, the four reinforcing ribs 202 are fixedly mounted on the inclined plane 201 at the joint of the elastic corrugated cover 20 and the first mounting end 10 along the axial direction, on one hand, the four reinforcing ribs 202 enhance the strength of the inclined plane 201 at the joint of the elastic corrugated cover 20 and the first mounting end 10 to resist the deformation caused by high pressure, and on the other hand, when the elastic corrugated cover 20 performs telescopic motion, the inclined plane 201 of the elastic corrugated cover 20 collapses to cause abnormal sound.

The elastic corrugated cover 20 is provided with a plurality of wave crest sections 204 protruding outwards along the axial direction, the elastic corrugated cover 20 is provided with a plurality of wave trough sections 205 protruding inwards along the axial direction, the plurality of wave crest sections 204 and the plurality of wave trough sections 205 are arranged in a staggered manner, so that the elastic corrugated cover 20 can stretch or bend in the axial direction and the radial direction to meet the requirement of the stretching working condition of a steering gear, the plurality of wave trough sections 205 recessed inwards enable the clearance between the wave trough sections 205 and a ball head to be reduced when the elastic corrugated cover 20 is deformed under high pressure, the wave trough sections 205 can be propped against the ball head in the elastic corrugated cover 20, the deformation resistance is improved, the plurality of wave trough sections 205 are fixedly provided with a plurality of fixing ribs 203, the number of fixing ribs 203 are four, the fixing ribs 203 between two adjacent wave trough sections 205 are arranged in a staggered manner, the staggered angle is 45 degrees, and the strength of the elastic corrugated cover 20 is improved by the staggered fixing ribs 203, the ability of the protective cover to resist high-temperature deformation is increased.

The depth of the wave trough section 205 of the elastic bellows 20 from the first mounting end 10 to the middle of the elastic bellows 20 and the middle of the elastic bellows 20 is greater than the depth of the wave trough section 205 of the transition from the second mounting end 30 to the middle of the elastic bellows 20, so that when the ball head is in contact with the inside of the elastic bellows 20, the wave trough section 205 props against the ball head, and the deformation-resistant supporting force of the elastic bellows 20 is increased.

Be provided with a plurality of sealed protruding muscle 101 in the first installation end 10, a plurality of sealed protruding muscle 101 equidistant setting, sealed protruding muscle 101 and steering gear pull rod interference fit on the first installation end 10, the leakproofness of first installation end 10 junction has been improved, satisfy high sealed effect, be provided with a plurality of sealed protruding muscle two 301 in the second installation end 30, a plurality of sealed protruding muscle two 301 equidistant setting, a plurality of recesses 302 have been seted up in the 30 outside of second installation end, a plurality of recesses 302 and a plurality of sealed protruding muscle two 301 one-to-one, sealed protruding muscle two 301 on the second installation end 30 with turn to casing body interference fit, the leakproofness of second installation end 30 junction has been improved, satisfy high sealed effect.

The compression-resistant steering protective cover is made of a thermoplastic vulcanized elastomer with Shore D hardness of 40-43 degrees, and the thermoplastic vulcanized elastomer with Shore D hardness of 41 degrees is selected in the invention, so that the compression-resistant steering protective cover has excellent high-temperature compression deformation resistance, further improves the tensile deformation capacity of the product, has excellent tear-off and tear strength performances, and ensures that the interior of the elastic corrugated cover 20 is not damaged when a ball head is in contact with the interior of the elastic corrugated cover 20.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation and a specific orientation configuration and operation, and thus, should not be construed as limiting the present invention. Furthermore, "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate member, or they may be connected through two or more elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.