CN221170505U - Lining and vehicle - Google Patents

Abstract

The utility model discloses a lining and a vehicle, wherein the lining comprises: the first backboard is provided with a first backboard front surface and a first backboard back surface, and the first backboard back surface is provided with friction materials; the second backboard is provided with a second backboard front surface and a second backboard back surface, the second backboard back surface is fixedly arranged on the first backboard front surface and forms a hollowed-out air interlayer with the first backboard front surface, and the air interlayer is suitable for blocking heat transfer to brake fluid. According to the utility model, when the heat generated by the first back plate is transferred to the second back plate and the brake caliper piston through the air interlayer under the high-load braking environment, the air interlayer blocks the heat and reduces the heat conduction efficiency, so that the braking liquid is protected, the situation of braking failure caused by boiling of the braking liquid is prevented, and the running safety of a vehicle is ensured.

Description

Lining and vehicle

Technical Field

The utility model relates to the technical field of vehicle liners, in particular to a liner and a vehicle.

Background

This section provides merely background information related to the present disclosure and does not necessarily constitute prior art.

The automobile brake is one kind of device with the functions of decelerating, stopping or maintaining the stopping state of the wheels, and the disc brake lining, also called as brake block, is one important part of disc brake and has friction force produced via the friction with the brake disc rotating synchronously with the wheels to reach the aim of decelerating or stopping the automobile.

The automobile lining consists of two parts, namely a friction material and a steel backing, the steel backing plays a role in supporting the friction material, and the brake caliper acts on the steel backing through brake fluid oil pressure to play a role in braking. Therefore, only one layer of piston is arranged between the brake fluid and the lining, the heat conductivity of the lining is generally good, and heat generated by braking is easily conducted to the brake caliper through the lining, so that the temperature of the brake fluid rises too fast; even if the lining is made of a material with relatively high temperature resistance, brake failure still occurs if the brake fluid boils.

Disclosure of utility model

Therefore, the technical problem to be solved by the utility model is to overcome the problem that brake fluid is easy to boil by heat generated by braking, so that braking failure is caused, and thus a lining and a vehicle are provided.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

A liner, comprising:

the first backboard is provided with a first backboard front surface and a first backboard back surface, and the first backboard back surface is provided with friction materials;

The second backboard is provided with a second backboard front surface and a second backboard back surface, the second backboard back surface is fixedly arranged on the first backboard front surface and forms a hollowed-out air interlayer with the first backboard front surface, and the air interlayer is suitable for blocking heat transfer to brake fluid.

According to the further optimized technical scheme, the air interlayer is a partially closed interlayer.

According to the technical scheme, the thickness of the air interlayer is 0.5-1.5mm.

According to the further optimized technical scheme, a plurality of positioning holes are formed in the second backboard in a penetrating mode, and the positioning holes are communicated with the air interlayer.

According to a further optimized technical scheme, at least one support column is arranged on the back surface of the second backboard, the support column is in front contact with the first backboard, and the support column is suitable for preventing the lining from deforming in the braking process.

According to the further optimized technical scheme, the front surface of the second backboard is in contact with the brake caliper piston;

The back of the second back plate is provided with at least one bearing block group, the bearing block group is in front contact with the first back plate, and the bearing block group corresponds to the position of the brake caliper piston.

According to the further optimized technical scheme, the second backboard is fixedly arranged on the first backboard in a welding way; a plurality of welding connecting blocks are arranged on the back surface of the second backboard along the edge line of the second backboard, and the first backboard and the second backboard are welded at the welding connecting blocks; two adjacent welding connecting blocks form a vent hole for communicating the air interlayer and the outside atmosphere.

A vehicle comprising said lining.

The technical scheme of the utility model has the following advantages:

1. According to the lining provided by the utility model, the existing backboard is designed into a split structure and is divided into a front layer and a rear layer, the air interlayer is arranged between the first backboard and the second backboard, air is a poor heat conductor, the heat conductivity coefficient of the air interlayer is only 0.025W/(m.K), and the air interlayer can play a role in blocking heat transfer relative to the first backboard and the second backboard.

According to the utility model, through structural optimization, heat is prevented from being transferred to the brake fluid in a form of hollowing the back plate, and the effectiveness of the brake fluid is ensured. More specifically, when the heat generated by the first backboard under the high-load braking environment is transferred to the second backboard and the brake caliper piston through the air interlayer, the air interlayer blocks the heat and reduces the heat conduction efficiency, so that the brake fluid is protected, the situation that the brake fluid is boiled to cause braking failure is prevented, and the running safety of a vehicle is ensured.

2. According to the lining provided by the utility model, the air interlayer is a partially closed interlayer, the air interlayer can be communicated with the outside atmosphere, when the temperature of air in the air interlayer is high, the outside air can enter the air interlayer to exchange heat with the air in the air interlayer, and the air interlayer can be ensured to have a continuous heat-resistant effect.

3. According to the lining provided by the utility model, the second backboard is provided with the plurality of positioning holes in a penetrating way, and the positioning holes are communicated with the air interlayer. The locating holes are arranged to locate the second backboard when the second backboard is sintered, and the air interlayer is communicated with external air to exchange air.

4. According to the lining provided by the utility model, the back surface of the second backboard is provided with at least one support column, and the support column enhances the support strength between the first backboard and the second backboard, so that the lining can be prevented from deforming and failing in the braking process.

5. According to the lining provided by the utility model, the back surface of the second backboard is provided with at least one bearing block group, and the setting position of the bearing block group corresponds to the stress point part of the second backboard, so that the bearing block group plays a role in supporting a brake caliper piston, the second backboard is not easy to flatten, and the normal existence of an air interlayer is ensured.

6. According to the lining provided by the utility model, the first backboard and the second backboard are sintered and formed, the first backboard and the second backboard are powder metallurgy composite lining, the powder metallurgy composite lining adopts a powder metallurgy preparation process, and is hot pressed and sintered and formed at the temperature exceeding 1000 ℃, so that the temperature resistance of the lining is greatly improved, good friction is shown under the high-load condition, and the service life of the material is long.

7. According to the lining provided by the utility model, the thickness of the air interlayer is 0.5-1.5mm, so that the deformation of the steel back can be avoided, and the effect of protecting brake fluid can be achieved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first view angle structure of a gasket according to the present utility model;

FIG. 2 is a schematic view of a second view angle structure of a gasket according to the present utility model;

FIG. 3 is a first perspective exploded view of a liner provided in accordance with the present utility model;

FIG. 4 is a second perspective exploded view of the liner provided by the present utility model;

FIG. 5 is a schematic view of the front surface of a second back plate in a liner according to the present utility model;

FIG. 6 is a schematic view of the structure of the back side of a second back plate in a backing sheet according to the present utility model;

FIG. 7 is a schematic view of the front surface of the first back plate in the liner sheet according to the present utility model;

fig. 8 is a schematic structural view of the back surface of the first back plate in the liner according to the present utility model.

Reference numerals:

1. The first backboard, 11, the groove, 12, the front surface of the first backboard, 13 and the back surface of the first backboard;

2. the back plate comprises a second back plate, 21, positioning holes, 22, bearing blocks, 23, welding connecting blocks, 24, supporting columns, 25, positioning clamping grooves, 26, connecting holes, 27, a second back plate front surface, 28 and a second back plate back surface;

3. And a vent hole.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, the lining of the present utility model is only a preferred embodiment described by the first back plate and the second back plate, and the protection scope of the lining is not limited, for example, the lining of the present utility model may also be an integrated lining, and an air interlayer is formed on the integrated lining, and the adjustment also belongs to the protection scope of the lining of the present utility model.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are inclusive and therefore specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof.

Although the terms first, second, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. In addition, in the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

For ease of description, spatially relative terms, such as "front," "back," "middle," "inner," "longitudinal," "lateral," "side," "vertical," "outer," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the mechanism in use or operation in addition to the orientation depicted in the figures. For example, if the mechanism in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Accordingly, the example term "below … …" may include both upper and lower orientations. The mechanism may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

In general, the friction material for automobile linings is a resin-based multi-component composite material, which is prepared from three main components of a binder (resin and rubber), reinforcing fibers and a friction performance regulator and other compounding agents through a series of manufacturing and processing processes, and the product has good friction coefficient and wear resistance, and also has certain heat resistance and mechanical strength.

With the improvement of the automobile performance, the resin matrix composite is difficult to meet the requirements of higher friction performance and temperature resistance, so that a high-performance powder metallurgy composite lining needs to be developed.

The heat resistance of the powder metallurgy composite lining is improved, but the boiling point of the brake fluid is only 260 ℃ at most according to the requirements of GB12981-2012 motor vehicle brake fluid. Only one layer of piston is separated between the brake fluid and the lining, and if the brake fluid boils, the brake can be disabled.

In order to ensure the effectiveness of the brake fluid, the utility model is structurally optimized from the lining, and the heat transfer process from the friction material to the brake fluid is blocked.

Example 1

Specific embodiments of the present utility model are described in detail below in conjunction with the liners of the first aspect of the present utility model.

It should be noted that the lining according to the first aspect of the present utility model is only a preferred embodiment of the present utility model, and the lining according to the first aspect of the present utility model may be configured as described above, or may be configured as other structures, and for convenience of explanation, the detailed structure of the lining according to the first aspect of the present utility model will be described below.

As shown in fig. 1 to 8, the present utility model provides a lining, in particular a powder metallurgy composite lining for an automobile, comprising a first back plate 1 and a second back plate 2. The first backboard 1 is provided with a first backboard front surface 12 and a first backboard back surface 13, the first backboard back surface 13 is provided with a groove 11, and friction materials are arranged in the groove 11. The second backboard 2 is provided with a second backboard front surface 27 and a second backboard back surface 28, the second backboard back surface 28 is fixedly arranged on the first backboard front surface 12, and the second backboard back surface 28 and the first backboard front surface 12 form a hollowed-out air interlayer which is suitable for blocking heat transfer to brake fluid.

According to the lining, the existing backboard is designed into a split structure and is divided into the front layer and the rear layer, the air interlayer is arranged between the first backboard 1 and the second backboard 2, air is a poor heat conductor, the heat conductivity coefficient of the air interlayer is only 0.025W/(m.K), and the air interlayer can play a role in blocking heat transfer relative to the first backboard 1 and the second backboard 2. According to the embodiment, the hollowed split design of the back plate is adopted, heat conduction efficiency is reduced through air separation, so that when heat generated by the first back plate 1 is transmitted to the second back plate 2 and the brake caliper piston through the air interlayer under a high-load braking environment, the heat is separated by the air interlayer, heat conduction efficiency is reduced, brake fluid is further protected, brake failure caused by brake fluid boiling is prevented, and running safety of a vehicle is ensured.

In some embodiments, the air interlayer is a partially enclosed interlayer. In this embodiment, the air interlayer can communicate with the outside atmosphere, and thus can exchange heat with the outside atmosphere. When the air temperature in the air interlayer is higher, external air can enter the air interlayer to exchange heat with the air in the air interlayer, so that the air interlayer can be ensured to have a continuous heat-resisting effect.

In some embodiments, the air interlayer may be open at the sides or may be open at the top of the second back plate 2, such that the air interlayer forms a partially closed interlayer.

In some embodiments, a plurality of positioning holes 21 are formed through the second back plate 2, and the positioning holes 21 are communicated with the air interlayer. The positioning holes 21 are arranged to position the second back plate when the second back plate is sintered, and the air interlayer is communicated with outside air to exchange air and increase heat insulation effect. As a specific embodiment, as shown in fig. 1, 3 and 4, two positioning holes 21 are provided and are respectively provided on the second back plate 2 at intervals.

In some embodiments, at least one support column 24 is disposed in the middle of the back surface of the second back plate, where the support column 24 contacts the front surface of the first back plate, and the support column 24 enhances the support strength between the first back plate 1 and the second back plate 2, and is suitable for preventing the lining from deformation and failure during braking. As a specific embodiment, as shown in fig. 4 and 6, two support columns 24 are provided, and are respectively arranged on the second back plate 2 at intervals, and the support columns 24 are provided in a rectangular column shape, or may be provided in other shapes.

In some embodiments, the second back plate front face is in contact with the brake caliper piston. The back of the second backboard is provided with at least one bearing block group, the bearing block group is in contact with the front surface of the first backboard, the bearing block group is positioned in the air interlayer, and the bearing block group corresponds to the position of the brake caliper piston, namely, the setting position of the bearing block group corresponds to the stress point position of the second backboard, so that the bearing block group plays a role in supporting the brake caliper piston, the second backboard is not easy to flatten, and the normal existence of the air interlayer is ensured.

In this embodiment, the bearing block group includes a plurality of bearing blocks 22, more specifically, the bearing block group is configured as three arc-shaped first bearing blocks and one cylindrical second bearing block, where the three arc-shaped strips are located on the same arc line.

In some embodiments, the first backboard 1 and the second backboard 2 are respectively provided with a plurality of connecting holes 26 correspondingly, the first backboard 1 and the second backboard 2 are respectively provided with positioning slots 25 correspondingly, and the connecting holes 26 and the positioning slots 25 are used for installing and positioning the whole lining. As a specific embodiment, as shown in fig. 1 and fig. 2, four connection holes 26 are correspondingly formed in the first back plate 1 and the second back plate 2, and the connection holes 26 are rectangular in shape.

In some embodiments, the second back plate 2 is fixedly welded on the first back plate 1; the back surface of the second backboard is provided with a plurality of welding connecting blocks 23 along the edge space of the second backboard 2, and the first backboard 1 and the second backboard 2 are welded at the welding connecting blocks 23. In the present embodiment, the shape of the welding connection block 23 may be rectangular or irregular polygonal. The front face 12 of the first backboard is a plane, and the welding connection block 23 is a convex structure. In this embodiment, the welding connection blocks 23 serve to support the second back plate 2 on one hand, and on the other hand, two adjacent welding connection blocks 23 form a vent hole 3 for communicating the air interlayer with the outside atmosphere, and the air interlayer exchanges heat with the outside atmosphere through the vent hole.

In some embodiments, the first and second backplates 1, 2 are sinter molded. The first backboard 1 and the second backboard 2 in the embodiment are powder metallurgy composite material linings, the powder metallurgy composite material linings are formed by hot pressing sintering at the temperature exceeding 1000 ℃ by adopting a powder metallurgy preparation process, the temperature resistance of the linings is greatly improved, good friction performance is shown under the high load condition, and the service life of the material is long.

In some embodiments, the material of the first back plate 1 and the second back plate 2 is carbon steel, and the heat conductivity coefficient is 36-54W/m.K. In this embodiment, the carbon steel has high strength, high hardness and good plasticity, and although the carbon steel has better thermal conductivity, the air interlayer arranged between the first back plate 1 and the second back plate 2 in this embodiment can effectively reduce the overall thermal conductivity of the lining.

In some embodiments, the air interlayer has a thickness of 0.5-1.5mm. In this embodiment, the hollowed-out amount of the steel back (the first backboard) is optimally 0.5-1.5mm, the steel back is deformed due to the excessively high hollowed-out amount, and the brake fluid cannot be protected due to the excessively low hollowed-out amount. In the continuous braking process, when the temperature of the friction material exceeds 700 ℃, the corresponding relation between the hollowed-out quantity and the instantaneous highest braking temperature is shown in the table below.

Hollow out amount/mm	Friction material temperature/°c	Temperature/DEGC of back surface of steel back	Brake fluid temperature/°c
				0.5	733	337	238
1.0	715	309	201
				1.5	724	258	169

A lining as described above, the first back plate 1 is used for placing friction material and sintering to be formed, as shown in fig. 2 and 8; the second backboard 2 and the first backboard 1 are combined to form a hollowed-out mode, protrusions are arranged at the stress point positions and the edge positions, as shown in fig. 4 and 6, the two layers of backboard are formed in a welding mode, heat generated by friction is effectively prevented from being transferred to the piston, and therefore brake fluid is protected.

Example 2

In order to solve the technical problem that the existing metal composite liner is relatively noisy, the material of the first back plate 1 and the second back plate 2 is improved on the basis of embodiment 1.

In some embodiments, 5-15% of foam iron powder is added into the mixture of the matrix and the friction components in the sintering molding process of the first backboard 1 and the second backboard 2, so that the problem of high noise can be effectively solved, and the low noise use requirement of a passenger car can be met.

As a preferred embodiment, the powder metallurgy metal composite lining substrate is iron, and the proportion is 50% -60%; the friction component adopts micro-carbon ferrochrome, silicon oxide and silicon carbide, the proportion is 4-10%, the lubrication component adopts graphite flake, graphite grain and molybdenum disulfide, the proportion is 8-18%; and adding 5-15% of foam iron powder.

According to the embodiment, the passenger car lining is prepared by introducing a powder metallurgy technology, so that the temperature resistance of the lining is improved, good friction is shown under a high-load condition, and the service life is prolonged.

Example 3

Specific embodiments of the utility model are described in detail below in connection with the vehicle of the second aspect of the utility model.

A vehicle comprising the liner of embodiment 1 or embodiment 2 of the present utility model.

It should be noted that, the vehicle in the present utility model may refer to a large-sized vehicle, a small-sized vehicle, a special-Purpose vehicle, etc., and the vehicle in the present utility model may be a sedan type, an off-road type, a Multi-Purpose vehicle (MPV) type, or other types, for example, according to the types of Vehicles. In vehicles, there are typically wheels, a power source, and a transmission system disposed between the wheels and the power source, where the transmission system is capable of transmitting power provided by the power source to the wheels to rotate the wheels, so as to drive the vehicle to travel.

In the embodiment of the present utility model, the type of the power source of the vehicle is not limited. For example, for a fuel-powered vehicle, the power source may refer to a fuel engine such as a gasoline engine, a diesel engine, or the like; for an electric vehicle, the power source may be referred to as an electric motor; for a hybrid electric vehicle, the power source may refer to an engine or an electric motor; for an otherwise powered vehicle, the power source may refer to a device that generates power.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.

Claims (9)

1. A liner, comprising:

the first backboard (1) is provided with a first backboard front surface and a first backboard back surface, and the first backboard back surface is provided with friction materials;

The second backboard (2) is provided with a second backboard front surface and a second backboard back surface, the second backboard back surface is fixedly arranged on the first backboard front surface and forms a hollowed-out air interlayer with the first backboard front surface, and the air interlayer is suitable for blocking heat transfer to brake fluid.

2. A patch according to claim 1, wherein said air interlayer is a partially enclosed interlayer.

3. A facing according to claim 1, wherein the air interlayer has a thickness of 0.5-1.5mm.

4. A lining according to claim 1, characterized in that the second back plate (2) is provided with a plurality of positioning holes (21) therethrough, the positioning holes (21) being in communication with the air interlayer.

5. A lining according to claim 1, characterized in that the second back plate is provided on its opposite side with at least one support post (24), the support post (24) being in front contact with the first back plate, the support post (24) being adapted to prevent deformation of the lining during braking.

6. A pad according to claim 1, wherein the second backing plate face is in contact with a brake caliper piston;

The back of the second back plate is provided with at least one bearing block group, the bearing block group is in front contact with the first back plate, and the bearing block group corresponds to the position of the brake caliper piston.

7. A lining according to claim 1, characterized in that the back side of the second back plate is provided with a plurality of welded connection blocks (23) along the edge interval of the second back plate (2), the first back plate (1) and the second back plate (2) being welded at the welded connection blocks (23); two adjacent welding connecting blocks (23) form a vent hole (3) which is communicated with the air interlayer and the outside atmosphere.

8. A lining according to claim 1, characterized in that the back side of the first backing plate is provided with grooves (11), and the friction material is arranged in the grooves (11).

9. A vehicle comprising a lining as claimed in any one of claims 1 to 8.