A front housing of a spring brake cylinder

Abstract

This application relates to a front housing of a spring brake cylinder, belonging to the technical field of automotive parts. The front housing of this application includes a base and an upper housing. The base is made of aluminum alloy; the upper housing is made of PA6+GF30 composite material, and the upper housing is fixedly connected to the base. In actual use, the base and the upper housing are set separately instead of being integrally cast. The stress generated at the base is relatively concentrated. Therefore, aluminum alloy is used as the material of the base to ensure that its design strength and stiffness meet the usage requirements. Compared with the base, the stress at the upper housing is smaller. Therefore, PA6+GF30 composite material can be used as the material of the upper housing, making the weight of the upper housing smaller. The separately designed upper housing and the base are fixedly connected, which can meet the lightweight requirements of the components while ensuring the overall structural strength, thus helping to meet the needs of automotive lightweighting.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts, and particularly relates to a front housing of a spring brake cylinder. Background Art

[0002] Currently, low-carbon steel is mainly used as the material for the front housing of the spring brake cylinder. However, using low-carbon steel as the material will increase the weight of the front housing of the brake cylinder, resulting in an increase in the weight of the whole vehicle, an increase in the fuel consumption of the whole vehicle, and being unfavorable for the lightweight requirement of the vehicle.

[0003] Therefore, it is necessary to design a new type of front housing of the spring brake cylinder to achieve the lightweight of the front housing of the spring brake cylinder while ensuring the structural strength. Summary of the Invention

[0004] An embodiment of this application provides a front housing of a spring brake cylinder to solve the problem in the related art that when using low-carbon steel as the material for the front housing of the spring brake cylinder, the weight is relatively large, which is unfavorable for the lightweight of the vehicle.

[0005] An embodiment of this application provides a front housing of a spring brake cylinder, including:

[0006] A base, the base is made of aluminum alloy;

[0007] An upper housing, the upper housing is made of PA6+GF30 composite material, and the upper housing is fixedly connected to the base.

[0008] In some embodiments, the base is bonded to the upper housing.

[0009] In some embodiments, a high-strength structural adhesive is used for bonding between the base and the upper housing.

[0010] In some embodiments, the base includes a first connection section, the upper housing includes a second connection section, an opening is provided on the second connection section, and a part of the first connection section extends into the opening of the second connection section.

[0011] In some embodiments, the diameter of the first connection section is smaller than that of the second connection section.

[0012] In some embodiments, the outer wall of the part of the first connection section extending into the second connection section fits against the inner wall of the second connection section.

[0013] In some embodiments, the diameter of the first connection section increases from the direction close to the upper housing to the direction away from the upper housing.

[0014] In some embodiments, the upper housing includes an upper housing body disposed on a side of the second connecting section away from the base, and an arc-shaped transition is formed between the second connecting section and the upper housing body.

[0015] In some embodiments, an arc chamfer is provided at an outer edge of an end face of the first connecting section near the upper housing.

[0016] In some embodiments, an arc chamfer is provided at an inner edge of an end face of the second connecting section near the base.

[0017] The beneficial effects brought by the technical solution provided by this application include:

[0018] The embodiment of this application provides a front housing of a spring brake cylinder. The front housing of this application includes a base and an upper housing. The base is made of aluminum alloy; the upper housing is made of PA6+GF30 composite material, and the upper housing is fixedly connected to the base.

[0019] In actual use, the base and the upper housing are separately provided instead of integrally cast. The stress generated at the base is relatively concentrated. Therefore, aluminum alloy is used as the material of the base to ensure that its design strength and stiffness meet the use requirements. Compared with the base, the stress at the upper housing is smaller. Therefore, PA6+GF30 composite material can be used as the material of the upper housing, making the weight of the upper housing smaller. The separately designed upper housing and the base are fixedly connected, which can meet the lightweight requirements of the components while ensuring the overall structural strength, thus helping to meet the needs of vehicle lightweighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the base and the upper housing provided by the embodiment of this application;

[0022] Figure 2 It is a schematic diagram of the assembled base and upper housing provided by the embodiment of this application.

[0023] Reference Signs:

[0024] 1. Base; 2. Upper housing; 11. First connecting section; 21. Second connecting section; 22. Upper housing body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts fall within the scope of protection of this application.

[0026] The embodiment of this application provides a front housing of a spring brake cylinder, which can solve the problem in the related art that when low-carbon steel is used as the material of the front housing of the spring brake cylinder, the weight is relatively large, which is not conducive to the lightweight of the vehicle.

[0027] See Figure 1 and Figure 2 As shown, the embodiment of this application provides a front housing of a spring brake cylinder, including a base 1 and an upper housing 2. The base 1 is made of aluminum alloy; the upper housing 2 is made of PA6+GF30 composite material, and the upper housing 2 is fixedly connected to the base 1.

[0028] In actual use, the base 1 and the upper housing 2 are separately arranged instead of integrally cast. The stress generated at the base 1 is relatively concentrated. Therefore, aluminum alloy is used as the material of the base 1 to ensure that its design strength and stiffness meet the use requirements. Compared with the base 1, the stress at the upper housing 2 is smaller. Therefore, PA6+GF30 composite material can be used as the material of the upper housing 2, making the weight of the upper housing 2 smaller. The separately designed upper housing 2 and the base 1 are fixedly connected, which can meet the lightweight requirements of the components while ensuring the overall structural strength, thus helping to meet the lightweight needs of the vehicle.

[0029] In some alternative embodiments, the base 1 is bonded to the upper housing 2. Specifically, a high-strength structural adhesive is used to bond between the base 1 and the upper housing 2. The upper housing 2 is made of PA6+GF30 composite material, and the base 1 is made of aluminum alloy. Using a high-strength structural adhesive to bond the upper housing 2 and the base 1 does not require setting up redundant structures to fixedly connect the upper housing 2 and the base 1, avoiding increasing the weight of the components, and can meet the lightweight requirements of the components while ensuring the overall structural strength.

[0030] In some alternative embodiments, as Figure 1 shown, the base 1 includes a first connection section 11, the upper housing 2 includes a second connection section 21, an opening is provided on the second connection section 21, and a part of the first connection section 11 extends into the opening of the second connection section 21.

[0031] The diameter of the first connecting section 11 is smaller than that of the second connecting section 21, ensuring that the first connecting section 11 can extend into the second connecting section 21. And the outer wall of the part of the first connecting section 11 extending into the second connecting section 21 fits against the inner wall of the second connecting section 21. A high-strength structural adhesive is provided on the outer wall surface of the first connecting section 11, and it is extended into the inner wall of the second connecting section 21, and the two are bonded and closely fitted. Moreover, the base 1 is made of aluminum alloy, and the upper shell 2 is made of PA6+GF30 composite material. By combining these two materials, the overall cost of the component can be reduced.

[0032] In some alternative embodiments, the diameter of the first connecting section 11 increases from the direction close to the upper shell 2 to the direction away from the upper shell 2, that is, the diameter of the first connecting section 11 extending into the second connecting section 21 is smaller than the diameter of other parts of the first connecting section 11, so as to ensure the stability of the structural connection.

[0033] In some embodiments, the upper shell 2 includes an upper shell body 22 provided on the side of the second connecting section 21 away from the base 1. There is an arc-shaped transition between the second connecting section 21 and the upper shell body 22. In the past, the transition between the base 1 and the upper shell 2 was a straight transition at a certain angle, while the arc-shaped transition between the second connecting section 21 and the upper shell body 22 can make the transition more natural and smooth, reduce stress concentration, and ensure the stability of the structure.

[0034] In some alternative embodiments, an arc chamfer is provided at the outer edge of the end face of the first connecting section 11 close to the upper shell 2. An arc chamfer is provided at the inner edge of the end face of the second connecting section 21 close to the base 1. The setting of the arc chamfer can prevent abrasion between the base 1 and the upper shell 2 during the assembly process and ensure the product quality.

[0035] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] It should be noted that in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0037] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A front housing of a spring brake cylinder, characterized in that, Including: A base (1), the base (1) being made of aluminum alloy; An upper shell (2), the upper shell (2) being made of PA6+GF30 composite material, the upper shell (2) being fixedly connected to the base (1); The base (1) is adhesively bonded to the upper shell (2); A high-strength structural adhesive is used for bonding between the base (1) and the upper shell (2); The base (1) includes a first connection section (11), and the upper shell (2) includes a second connection section (21); The diameter of the first connection section (11) increases in the direction away from the upper shell (2) from the direction close to the upper shell (2); The upper shell (2) includes an upper shell body (22) provided on the side of the second connection section (21) away from the base (1), and an arc-shaped transition is formed between the second connection section (21) and the upper shell body (22).

2. A front housing of a spring brake cylinder according to claim 1, characterized in that: An opening is provided on the second connection section (21), and a part of the first connection section (11) extends into the opening of the second connection section (21).

3. A front housing of a spring brake cylinder according to claim 2, characterized in that: The diameter of the first connection section (11) is smaller than that of the second connection section (21).

4. A front housing of a spring brake cylinder according to claim 2, characterized in that: The outer wall of the part of the first connection section (11) extending into the second connection section (21) is fitted to the inner wall of the second connection section (21).

5. A front housing of a spring brake cylinder according to claim 2, characterized in that: An arc chamfer is provided at the outer edge of the end face of the first connection section (11) close to the upper shell (2).

6. A front housing of a spring brake cylinder according to claim 2, characterized in that: An arc chamfer is provided at the inner edge of the end face of the second connection section (21) close to the base (1).

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