CN220228354U

CN220228354U - Novel bellows protecting sleeve

Info

Publication number: CN220228354U
Application number: CN202321993774.XU
Authority: CN
Inventors: 李永茂; 靳同杰
Original assignee: Shen Ya Seals Guangzhou Co ltd
Current assignee: Shen Ya Seals Guangzhou Co ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2023-12-22
Anticipated expiration: 2033-07-27

Abstract

The utility model relates to a novel corrugated pipe protective sleeve, and belongs to the technical field of automobile corrugated pipe protective sleeves. The corrugated pipe protective sleeve is characterized by comprising a protective layer, wherein the protective layer is provided with a continuous corrugated structure along the axial direction of the protective layer, the intervals between any two adjacent peaks are equal, a first support ring is arranged at the peak of the outer wall of the protective layer, a second support ring is arranged at the trough of the inner wall of the protective layer, protective sheets are arranged on two sides of the first support ring, and the protective sheets are covered at the joint of the peak of the outer wall of the protective layer and the trough of the outer wall of the protective layer.

Description

Novel bellows protecting sleeve

Technical Field

The utility model belongs to the technical field of automobile corrugated pipe protective jackets, and particularly relates to a novel corrugated pipe protective jacket.

Background

A large number of brake pipelines for transmitting fluid are arranged in an engine compartment of an automobile, and a heat insulation sheath is generally added to a position, close to the engine compartment, of a brake hard tube for heat insulation protection of a nylon layer of the brake hard tube. When the automobile is started, the temperature in the engine cabin is very high, a large amount of oily substances are stored, the nylon layer of the brake hard tube is easily damaged at high temperature, the damaged nylon layer is easily damaged by the oily substances, and in order to prevent the brake hard tube from being damaged, aluminum foil corrugated pipes are generally wrapped around the brake hard tube to insulate heat, so that the brake hard tube is protected. The aluminum foil corrugated pipe is characterized in that a lamellar aluminum foil layer is wrapped around the aluminum foil corrugated pipe on the basis of the aluminum foil corrugated pipe, and the aluminum foil corrugated pipe is a high-temperature-resistant heat insulation sleeve. With the development of the automobile industry, more and more parts are assembled in an engine compartment, the engine compartment becomes more and more crowded, the bending trend of a brake hard tube in the engine compartment is more and more, the bending degree is more and more, an aluminum foil corrugated tube sleeved on the brake hard tube needs to be frequently bent, the aluminum foil layer around the aluminum foil corrugated tube is stretched and thinned at a bending corner due to the overlarge bending degree, the heat insulation performance of the aluminum foil corrugated tube is influenced, and under the high-temperature environment of the engine compartment of an automobile, the aluminum foil corrugated tube has the risk of breakage or fusing, so that the braking effect of the automobile is influenced.

The patent of the grant bulletin number CN205736241U discloses an aluminum foil tube, sets up interior aluminum foil layer, outer aluminum foil layer and inlayed layer, and this aluminum foil tube is used for separation engine compartment internal high temperature, protects the safety of pencil in the pipe, has solved ordinary aluminum foil tube and has led to the thickness on aluminum foil layer inequality because of tensile in the department of turning, arouses the cracked problem of aluminum foil layer, sets up the back-up ring in crest and trough department simultaneously, prevents that the aluminum foil tube from damaging. However, this aluminum foil tube has the following problems: only set up the holding ring to the crest and the trough department of aluminium foil bellows, the junction of aluminium foil bellows crest and trough lacks the protection, in the narrow and small space in car engine compartment, aluminium foil bellows usually need buckle in succession, and the crest and the trough junction of aluminium foil bellows can expose because of aluminium foil bellows buckle. The automobile can bump in the driving process, the aluminum foil corrugated pipe in the engine compartment shakes and collides with other parts in the engine compartment, and when the parts collide with the connection parts of the wave crest and the wave trough of the aluminum foil corrugated pipe, the connection parts of the wave crest and the wave trough of the aluminum foil corrugated pipe are broken and damaged, so that the heat insulation effect is affected.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides a novel corrugated pipe protective sleeve.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a novel bellows protective sheath, its characterized in that, includes the protective layer, the protective layer has continuous ripple structure along its axis direction, and the interval between arbitrary adjacent two wave crests is equal, protective layer outer wall wave crest department is equipped with first back-up ring, protective layer inner wall trough department is equipped with the second back-up ring, first back-up ring both sides are equipped with the protection piece, and the protection piece covers in the junction of protective layer outer wall wave crest and protective layer outer wall trough.

Preferably, the protective layer comprises an inner aluminum foil layer, an inner embedded layer and an outer aluminum foil layer, wherein the outer aluminum foil layer is coated on the periphery of the inner embedded layer, the inner embedded layer is arranged between the inner aluminum foil layer and the outer aluminum foil layer, and the inner embedded layer is made of glass fiber materials.

Preferably, the thickness of the inner aluminum foil layer is 0.03-0.05mm, the thickness of the inner embedded layer is 0.2-0.3mm, and the thickness of the outer aluminum foil layer is 0.04-0.06mm.

Preferably, the corrugated pipe protective sleeve has 42 or more corrugated structures per 100 mm.

Preferably, the protective sheet material is a heat-resistant rubber.

Preferably, the embedded layer is aluminum foil composite glass fiber cloth formed by weaving glass fiber yarns and compounding the glass fiber yarns and aluminum foil through hot pressing.

Preferably, the first support ring and the second support ring are both tin-plated steel rings.

Preferably, the outer periphery of the outer aluminum foil layer and the inner wall of the inner aluminum foil layer are plated with tin layers.

Preferably, the cross sections of the peaks and the troughs of the protective layer are semicircular.

The beneficial effects of the utility model are as follows:

the corrugated pipe protective sleeve is used for isolating high temperature of an automobile brake hard pipe, has good wear resistance and heat insulation performance, and can be well adapted to the complex trend in a narrow space and the trend with large curvature by protecting the wave crest, the wave trough and the material between the wave crest and the wave trough of the corrugated pipe protective sleeve, so that breakage or cutting is avoided.

Drawings

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

FIG. 1 is a schematic view of a novel bellows shield according to an embodiment of the present utility model;

fig. 2 is a cross-sectional view at a in fig. 1.

Legend: 1. a protective layer; 11. an inner aluminum foil layer; 111. a second support ring; 12. an embedded layer; 13. an outer aluminum foil layer; 131. a first support ring; 132. and a protective sheet.

Detailed Description

In order to further describe the technical means and effects adopted by the utility model for achieving the preset aim, the following detailed description is given below of the specific implementation, structure, characteristics and effects according to the utility model with reference to the attached drawings and the preferred embodiment.

As shown in fig. 1-2, a novel bellows protecting cover comprises a protecting layer 1, wherein the protecting layer 1 has a continuous corrugated structure along the axial direction of the protecting layer 1, the corrugated structure enables the protecting layer 1 to have good bending performance, if the corrugated structure of the protecting layer 1 is discontinuous, when the protecting layer 1 needs to be bent, the purpose of bending the protecting layer 1 needs to be achieved by stretching materials between peaks, which leads to the breakage of the materials between the peaks due to stretching, and damage is caused to the protecting layer 1, so that the continuous corrugated structure can reduce the risk of breakage of the protecting layer 1; meanwhile, the intervals between any two adjacent wave crests of the protective layer 1 are equal, so that the limit bending born by the material between any two adjacent wave crests on the protective layer 1 is the same, if the intervals between the two wave crests on the protective layer 1 are unequal, when the protective layer 1 is bent by the same angle, the tensile force of the material between the two wave crests far apart on the protective layer 1 is larger, and the protective layer 1 is easier to tear, therefore, the intervals between any two adjacent wave crests of the protective layer 1 are equal, and the limit tensile force born by the material between each wave crest of the protective layer 1 is the same.

When the automobile is started, the engine can vibrate the engine cabin because of the operation of the engine, and the automobile can encounter frequent jolts in the driving process, so that the brake hard tube and the corrugated pipe protective sleeve can shake in the engine cabin, the movable space of the engine cabin is small, the frequent jolts can enable the corrugated pipe protective sleeve to strike nearby parts, and the protective layer 1 is easy to damage due to the striking. The peak of the protective layer 1 is of a convex structure, so that the protective layer 1 is easy to collide with other parts in the engine compartment, and the protective layer 1 is prevented from being worn out due to collision between the peak and the engine compartment parts, so that a first supporting ring 131 is arranged outside the outer aluminum foil layer 13 at the peak of the protective layer 1 to protect the protective layer 1 at the peak; the corrugated pipe protective sleeve can strike smaller parts in the engine cabin at the same time, the smaller parts possibly strike the trough of the protective layer 1, so that the trough of the protective layer 1 is damaged, and a second supporting ring 111 is arranged in the protective layer 1 for protecting the trough on the inner side of the inner wall of the protective layer 1, so that the parts in the engine cabin are prevented from striking the trough of the protective layer 1, and the protective layer 1 is prevented from being broken; the protection layer 1 often needs frequent bending in narrow and small engine cabin, and crookedness often is great, the material stretching between the trough of protection layer 1 inner wall and the crest of protection layer 1 outer wall exposes to the crookedness of protection layer 1, the part that is easy to collide with in the engine cabin, consequently, need prevent that the material from damaging because of colliding other parts in the engine cabin between the crest of protection layer 1 outer wall and the trough of protection layer 1 inner wall, need guarantee simultaneously that bellows protection cover can crooked smoothly, on the basis of this, be equipped with protection sheet 132 in first back-up ring 131 both sides, protection sheet 132 covers in the junction of protection layer 1 outer wall crest and protection layer 1 outer wall trough, protect the material between the crest of protection layer 1 outer wall and the trough of protection layer 1 inner wall, make protection layer 1 can crooked smoothly simultaneously.

In an embodiment, the protection layer 1 includes an inner aluminum foil layer 11, an inner embedded layer 12 and an outer aluminum foil layer 13, where the inner aluminum foil layer 11, the inner embedded layer 12 and the outer aluminum foil layer 13 are sequentially disposed from inside to outside, and the aluminum foil is soft but is a good heat insulation material, and the outer aluminum foil layer 13 is at the outermost layer and is used for primarily reflecting heat generated by the engine to achieve the purpose of heat insulation. The material of the embedded layer 12 is glass fiber, the glass fiber has the characteristics of high elastic coefficient, good rigidity, good insulativity, air tightness, heat resistance and corrosion resistance, and can provide a good working environment for a brake hard tube, the embedded layer 12 can provide physical support for the outer aluminum foil layer 13, the outer aluminum foil layer 13 is prevented from being stretched and thinned due to bending, the heat insulation effect is reduced, and meanwhile, the embedded layer 12 can further insulate heat which cannot be insulated by the outer aluminum foil layer 13. The inner aluminum foil layer 11 is used for wrapping glass fibers in the inner embedded layer 12, and serves as a heat insulation layer of the last layer, the inner aluminum foil layer 11 further insulates heat which cannot be insulated by the inner embedded layer 12, further improves heat insulation effect, and meanwhile, the inner aluminum foil layer 11 wraps the inner embedded layer 12, so that the inner embedded layer 12 is prevented from scattering when the protective sleeve breaks, and the nylon layer of the brake hard tube is broken to cause damage.

In an embodiment, when the thickness of the outer aluminum foil layer 13 is smaller than 0.04mm, the aluminum foil layer is too thin, so that the heat insulation effect is poor, the heat insulation performance of the whole corrugated pipe protective sleeve cannot be effectively insulated, the heat insulation performance of the whole corrugated pipe protective sleeve is reduced, because the inner space of the automobile engine cabin is limited, parts in the automobile engine cabin are more to install, the installation space of the corrugated pipe protective sleeve is very limited, when the thickness of the outer aluminum foil layer 13 is larger than 0.06mm, the heat insulation performance of the aluminum foil is excessive, the material is wasted, and the whole corrugated pipe protective sleeve is increased, so that the thickness of the outer aluminum foil layer 13 is 0.04-0.06mm, and according to practical installation experience and experimental data, the optimal heat insulation performance can be exerted in the limited space when the thickness of the outer aluminum foil layer 13 is 0.05 mm. When the thickness of the inner layer 12 is smaller than 0.2mm, the heat insulation performance is reduced, meanwhile, the supporting strength of the inner layer 12 is insufficient, when the corrugated pipe protective sleeve is bent, the outer aluminum foil layer 13 is not sufficiently supported to be bent and deformed, the outer aluminum foil layer 13 is damaged due to the fact that the outer aluminum foil layer 13 is not uniform in thickness due to stretching, when the thickness of the inner layer 12 is larger than 0.3mm, the whole weight of the corrugated pipe protective sleeve is increased, the pressure born by a brake hard pipe is increased, the friction force born by the brake hard pipe is increased, the brake hard pipe is easy to wear, and the brake hard pipe nylon layer is damaged, therefore, the thickness of the inner layer 12 is 0.2-0.3mm, according to practical installation experience and experimental data, the inner layer 12 can provide support for the outer aluminum foil layer 13 when the thickness of the inner layer 12 is 0.25mm, the brake hard pipe is good in heat insulation performance, and the brake hard pipe cannot be damaged, and the brake hard pipe is a good thickness. When the thickness of the inner aluminum foil layer 11 is smaller than 0.03mm, the aluminum foil layer is thinner, the heat insulation performance is poorer, the material strength is also lower, when the corrugated pipe protective sleeve is broken, glass fibers cannot be wrapped, so that the glass fibers damage the aluminum foil corrugated pipe, when the thickness of the inner aluminum foil layer 11 is larger than 0.06mm, the material performance is excessive, and the inner aluminum foil layer occupies too much space and has no economy, so that the thickness of the inner aluminum foil layer is 0.03-0.06mm, and according to practical installation experience and experimental data, the inner aluminum foil layer 11 has the best performance when the thickness is 0.05mm, and can wrap the glass fibers in a limited space and exert the heat insulation performance.

In an embodiment, the number of the corrugations on the corrugated pipe protective sleeve influences the bending degree of the corrugated pipe protective sleeve, when the corrugated pipe protective sleeve needs to be bent more and the corrugated structure is arranged less, the bending purpose of the corrugated pipe protective sleeve needs to be achieved by stretching materials between the corrugations, the corrugated pipe protective sleeve is damaged due to excessive stretching materials, and generally, the corrugated pipe has 37 corrugated structures per 100mm, when the corrugated pipe is bent in a narrow engine room, the materials between the corrugations are pulled more and are easy to break, when the corrugated structures on the corrugated pipe protective sleeve per 100mm are 42, the tensile force of the materials between the corrugations is reduced, and the bending degree of the corrugated pipe protective sleeve is larger and is more suitable for being used in the narrow engine room, so that the corrugated pipe protective sleeve has 42 corrugated structures or more.

In an embodiment, the protection sheets 132 rub against each other to cause the thinning of the protection sheets 132 and the reduction of the protection performance, based on which, the protection sheets 132 are made of heat-resistant rubber, which can resist high temperature, and conform to the high-temperature use environment of the engine compartment, and meanwhile, the heat-resistant rubber is wear-resistant, and has a certain elastic performance to absorb impact force well, when the corrugated pipe protection sleeve is bent, the protection sheets 132 are blocked between the wave crest and the wave trough, so as to prevent the corrugated pipe protection sleeve from being damaged.

In one embodiment, the engine compartment has more pipelines, and the brake hard pipes are easy to interfere with each other when working simultaneously, based on the fact, the inner embedded layer 12 is aluminum foil composite glass fiber cloth formed by weaving glass fiber yarns and compounding aluminum foils through hot pressing, the aluminum foil composite glass fiber cloth is made of high-temperature fireproof glass fiber cloth serving as a base cloth, one side of the aluminum foil composite glass fiber cloth is coated with aluminum foils, and a material made of the aluminum foil composite glass fiber cloth is reinforced and bonded.

In an embodiment, the automobile is unlikely to encounter rain and snow weather in the outdoor driving, and more or less rain and snow can enter the engine compartment to rust the first support ring 131 and the second support ring 111, based on which, the first support ring 131 and the second support ring 111 are tinned steel rings, so that the rust is effectively prevented, and the service life of the bellows protecting sleeve is prolonged.

In an embodiment, there are many oily substances and also many water-based substances such as rainwater in the engine compartment, when the car runs and jolts, these substances can not permeate to outer aluminum foil layer 13 and interior aluminum foil layer 11 department, can cause the corruption to outer aluminum foil layer 13 and interior aluminum foil layer 11 in the past for a long time, therefore need to plate the tin layer on the periphery of outer aluminum foil layer 13 and the inner wall of interior aluminum foil layer 11, reach dampproofing and waterproofing's purpose, simultaneously, make the periphery of outer aluminum foil layer 13 and the inner wall of interior aluminum foil layer 11 smoother, reduce the frictional force between outer aluminum foil layer 13 and the first holding ring 131 and the frictional force between interior aluminum foil layer 11 and the second holding ring 111, prolong bellows protecting cover's life.

In an embodiment, the bellows protecting cover needs to be sleeved with the brake hard tube, and the surface of the brake hard tube is prevented from being scratched when the bellows protecting cover is installed, so that the nylon layer of the brake hard tube is damaged, and therefore, the cross sections of the wave crests and the wave troughs of the bellows are semicircular, damage to other parts is prevented, and meanwhile, the smoothness of the bellows protecting cover during installation is guaranteed.

The present utility model is not limited to the above embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.

Claims

1. The utility model provides a novel bellows protective sheath, its characterized in that, including protective layer (1), protective layer (1) have continuous ripple structure along its axis direction, and the interval between arbitrary adjacent two wave crests is equal, protective layer (1) outer wall wave crest department is equipped with first back-up collar (131), protective layer (1) inner wall trough department is equipped with second back-up collar (111), first back-up collar (131) both sides are equipped with protection sheet (132), protection sheet (132) cover in the junction of protective layer (1) outer wall wave crest and protective layer (1) outer wall wave trough.

2. The novel corrugated pipe protective sleeve according to claim 1, wherein the protective layer (1) comprises an inner aluminum foil layer (11), an inner embedded layer (12) and an outer aluminum foil layer (13), the outer aluminum foil layer (13) is coated on the periphery of the inner embedded layer (12), the inner embedded layer (12) is arranged between the inner aluminum foil layer (11) and the outer aluminum foil layer (13), and the inner embedded layer (12) is made of a glass fiber material.

3. A new corrugated pipe protective cover according to claim 2, characterized in that the thickness of the inner aluminium foil layer (11) is 0.03-0.05mm, the thickness of the inner layer (12) is 0.2-0.3mm, and the thickness of the outer aluminium foil layer (13) is 0.04-0.06mm.

4. A novel bellows shield according to claim 1, wherein the bellows shield has 42 or more corrugations per 100 mm.

5. The novel bellows protective cover according to claim 1, wherein the protective sheet (132) material is a heat resistant rubber.

6. A new type of bellows protective cover according to claim 3, characterized in that the inner layer (12) is an aluminum foil composite glass fiber cloth formed by weaving glass fiber filaments and compounding with aluminum foil by hot pressing.

7. The novel corrugated pipe protective sleeve according to claim 1, wherein the first supporting ring (131) and the second supporting ring (111) are tin-plated steel rings.

8. A new corrugated pipe protective cover according to claim 3, characterized in that the outer circumference of the outer aluminium foil layer (13) and the inner wall of the inner aluminium foil layer (11) are both plated with tin layers.

9. A new type of bellows protecting cover according to claim 1, characterized in that the peaks and valleys of the protecting layer (1) are semi-circular in cross section.