Compression pump assembly and air suspension air supply unit

Abstract

The application discloses a kind of compressed pump assembly and air suspension air supply unit, including motor assembly, air compressor pump assembly, dryer assembly.Wherein, motor assembly, including motor, motor casing and motor sealing ring;Air compressor pump assembly, including pump shell, ring, end cover, end cover sealing ring, outlet check valve, compressed pump cylinder sealing ring, compressed pump cylinder, piston assembly, piston ring;Dryer assembly, including pump shell, dryer assembly, ring, end cover, end cover sealing ring.Because compressed pump assembly integrates motor, dryer and air compressor pump, so that the valve block internal gas path structure greatly simplified with compressed pump assembly is connected, to realize the cost of air suspension air supply unit overall development production greatly reduces.

Description

Technical Field

[0001] This invention relates to the automotive field, and in particular to a compressor pump assembly and an air supply unit for an air suspension. Background Technology

[0002] Traditional car suspension mainly consists of springs and dampers. Traditional suspension springs are mainly pure mechanical springs with constant stiffness, such as leaf springs and coil springs, so the adjustability and comfort during car driving are relatively poor.

[0003] Air suspension replaces purely mechanical springs with air springs in the form of air bags. It uses an air compressor to control the amount of air in the air bags to adjust the height and stiffness of the air bags, thereby achieving the purpose of adjusting the height of the vehicle body and chassis and the stiffness of some suspension components, while improving the overall driving comfort and handling of the vehicle.

[0004] Currently, the open air suspension system mainly used in the domestic automotive market consists of an air tank, an air compressor pump, an independent controller, an air pressure valve group, and air springs. There is also a mass-produced closed air suspension system on the market that integrates the air compressor pump, controller, and air pressure valve group into an air supply unit to pump air into the air springs of the air suspension system, thereby realizing the adjustment of the suspension height and stiffness.

[0005] US Patent 202016898163A discloses an air suspension system including an air supply system valve block comprising one or more air spring valves disposed within the air supply system block, the air supply system block having a valve block housing. The system also includes an air supply system block pneumatically coupled to one or more air springs, at least one reservoir coupled to the air supply system block, and at least one motor and pump disposed within the air supply system block. The air suspension also includes a rapid descent leveling valve disposed within the air supply system block. While this design largely integrates the air supply unit, the integration of the air compressor pump's structural features onto the valve block results in a dispersed layout of the gas handling and pneumatic actuation components (motor, compressor pump, and dryer) of the air supply unit. This leads to a complex internal air passage structure within the air supply valve block, increasing manufacturing difficulty and costs. Summary of the Invention

[0006] The summary of this invention introduces a series of simplified concepts, all of which are simplifications of existing technologies in the field, and will be further explained in detail in the detailed description section. This summary is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0007] The technical problem to be solved by the present invention is to provide a gas handling and air pressure actuation components (motor, compressor pump and dryer) of an air suspension air supply unit that are separated from the valve block and can realize functions such as intake and exhaust treatment and air pressure increase and decrease. The compressor pump assembly and air suspension air supply unit are simple in structure, easy to assemble, occupy little space and have a high degree of integration.

[0008] To solve the above-mentioned technical problems, in a first aspect, the present invention provides a compression pump assembly applied to an air supply unit for an air suspension system, the compression pump assembly comprising:

[0009] Motor assembly 100, air compressor pump assembly 110, dryer assembly 120;

[0010] Motor assembly 100 includes a motor, motor housing and motor seal 101;

[0011] An air compressor pump assembly 110 includes a pump housing 111, a retaining ring 112, an end cover 113, an end cover sealing ring 114, an outlet check valve 115, a compressor pump cylinder sealing ring 116, a compressor pump cylinder 117, a piston assembly 118, and a piston retaining ring 119.

[0012] The dryer assembly 120 includes a pump housing 111, a dryer component 121, a retaining ring 112, an end cap 113, and an end cap sealing ring 114.

[0013] Preferably, the compressor assembly is further improved such that the pump housing 111 is an integrated cylindrical cavity structure housing, including a drying cavity and a compression cavity.

[0014] Preferably, the air compressor assembly is further improved such that the air compressor assembly 110 is integrated and housed in the compression chamber, and the dryer assembly 120 is integrated and housed in the drying chamber, wherein the drying chamber and the compression chamber are arranged in an axially parallel manner.

[0015] Preferably, the compressor assembly is further improved by using a cast aluminum process to form the housing.

[0016] Preferably, the compressor pump assembly is further improved such that the drying chambers are respectively disposed on both sides of the compressor chamber.

[0017] Preferably, the compressor pump assembly is further improved by using a cast aluminum process to form the motor housing.

[0018] Preferably, the compressor assembly is further improved such that both the pump housing 111 and the external seal adopt an end cap snap-fit ​​and sealing ring structure.

[0019] In a second aspect, the present invention also provides an air suspension air supply unit, comprising: a compressor pump assembly as described above.

[0020] This invention integrates the motor assembly, air compressor pump, and dryer into a single housing (preferably an aluminum housing). The dryer is connected to the valve block in the air supply unit via bolts and sealing rings. The valve block is not a component of this invention and is located outside the compressor pump assembly. The compressor pump assembly, driven by two air compressor pumps driven by an eccentric shaft motor, reciprocates to exhaust gas, providing air pressure to the air supply unit. The dryer assembly then dries the pressurized gas inside the valve block circuit. Because the air compressor pump and dryer are integrated, the valve block structure, which would normally house the compressor pump, is greatly simplified, thereby simplifying the valve block manufacturing process and reducing the overall manufacturing cost of the air suspension air supply unit.

[0021] This invention not only enables the supply of air to the air supply unit of the air suspension, but its modular structure also occupies less space, is easier to assemble, and has a lower cost, realizing the integration, miniaturization, and economy of mechanical structure design. Attached Figure Description

[0022] The accompanying drawings are intended to illustrate the general characteristics of the methods, structures, and / or materials used in specific exemplary embodiments of the invention, supplementing the description in the specification. However, the drawings are schematic diagrams not drawn to scale and may not accurately reflect the precise structural or performance characteristics of any of the given embodiments. The drawings should not be construed as limiting or restricting the range of numerical values ​​or properties covered by exemplary embodiments of the invention. The invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0023] Figure 1 This is a schematic diagram of the overall structure of the compression pump assembly of the present invention.

[0024] Figure 2 This is an exploded schematic diagram of the compression pump assembly of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 100. Motor Assembly

[0027] 101. Motor sealing ring

[0028] 110. Air compressor pump assembly

[0029] 111. Pump casing

[0030] 112. Card Circle

[0031] 113. End cap

[0032] 114. End cap sealing ring

[0033] 115. Outlet check valve

[0034] 116. Compression pump cylinder seal ring

[0035] 117. Compression pump cylinder body

[0036] 118. Piston Assembly

[0037] 119. Piston circlip

[0038] 120. Dryer assembly

[0039] 121. Dryer assembly Detailed Implementation

[0040] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can fully understand other advantages and technical effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through different specific embodiments, and various details in this specification can also be applied based on different viewpoints, with various modifications or changes made without departing from the overall design concept of the invention. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. The following exemplary embodiments of the present invention can be implemented in many different forms and should not be construed as being limited to the specific embodiments set forth herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete, and to fully convey the technical solutions of these exemplary embodiments to those skilled in the art. It should be understood that when an element is referred to as "connected" or "combined" to another element, the element can be directly connected or combined to the other element, or there may be intermediate elements. The difference is that when an element is referred to as "directly connected" or "directly combined" to another element, there are no intermediate elements. Throughout the drawings, the same reference numerals always denote the same elements.

[0041] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such orders can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein.

[0042] Example 1;

[0043] refer to Figures 1-2 As shown, the present invention provides a compression pump assembly applied to an air suspension air supply unit, the compression pump assembly comprising:

[0044] Motor assembly 100, air compressor pump assembly 110, dryer assembly 120;

[0045] Motor assembly 100 includes a motor, motor housing and motor seal 101;

[0046] An air compressor pump assembly 110 includes a pump housing 111, a retaining ring 112, an end cover 113, an end cover sealing ring 114, an outlet check valve 115, a compressor pump cylinder sealing ring 116, a compressor pump cylinder 117, a piston assembly 118, and a piston retaining ring 119.

[0047] The dryer assembly 120 includes a pump housing 111, a dryer component 121, a retaining ring 112, an end cap 113, and an end cap sealing ring 114.

[0048] Preferably, the compressor assembly is further improved such that the pump housing 111 is an integrated cylindrical cavity structure housing, including a drying cavity and a compression cavity.

[0049] Preferably, the compressor assembly is further improved such that the air compressor assembly 110 is integrated and housed in the compression chamber, and the dryer assembly 120 is integrated and housed in the drying chamber, wherein the drying chamber and the compression chamber are arranged in an axially parallel manner. In this embodiment, the air compressor assembly 110 is fixed at both ends in the compression chamber by means of two sets of retaining rings 112 and end caps 113, and the compression chamber is sealed to the outside by means of two sets of end cap sealing rings 114. Similarly, the dryer assembly 120 is fixed in the drying chamber by means of retaining rings 112 and end caps 113, and the drying chamber is sealed to the outside by means of end cap sealing rings 114.

[0050] Preferably, the compressor assembly is further improved by using a cast aluminum process to form the housing.

[0051] Preferably, the compression pump assembly is further improved, with drying chambers respectively disposed on both sides of the compression chamber; in this embodiment, the pump housing 111 integrates all the gas drying and compression chambers in the air supply unit, which are, from left to right, the dryer chamber, the compression pump chamber, and the dryer chamber, respectively. The three chambers are arranged axially parallel and are relatively independently sealed inside.

[0052] Preferably, the compressor assembly is further improved by using a cast aluminum process to form the motor housing; in this embodiment, the motor 100 adopts a brushless DC motor structure, which is connected to the pump housing 111 by bolts and fixed to the valve block. The motor 100, the pump housing 111, and the valve block are sealed in the air passage by O-rings.

[0053] Preferably, the compressor assembly is further improved such that both the pump housing 111 and the external seal adopt an end cap snap-fit ​​and sealing ring structure.

[0054] The present invention also provides an air supply unit for an air suspension, comprising: a compressor pump assembly according to any of the above claims.

[0055] Unless otherwise defined, all terms used herein, including technical and scientific terms, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It will also be understood that, unless explicitly defined herein, terms such as those defined in a general dictionary shall be interpreted as having the meaning consistent with their meaning in the relevant field context, and not as having an idealized or overly formal meaning.

[0056] The present invention has been described in detail above through specific embodiments and examples, but these are not intended to limit the invention. Many modifications and improvements can be made by those skilled in the art without departing from the principles of the invention, and these should also be considered within the scope of protection of the present invention.

Claims

1. A compressor pump assembly, applied to an air supply unit of an air suspension, characterized in that, The compressor pump assembly includes: a motor assembly (100), an air compressor pump assembly (110), and a dryer assembly (120); The motor assembly (100) includes a motor, a motor housing, and a motor sealing ring (101); The air compressor pump assembly (110) includes a pump housing (111), a retaining ring (112), an end cap (113), an end cap sealing ring (114), an outlet check valve (115), a compressor pump cylinder sealing ring (116), a compressor pump cylinder (117), a piston assembly (118), and a piston retaining ring (119). The dryer assembly (120) includes a pump housing (111), a dryer component (121), a retaining ring (112), an end cap (113), and an end cap sealing ring (114).

2. The compression pump assembly as described in claim 1, characterized in that, The pump housing (111) is an integrated cylindrical cavity structure housing, including a drying cavity and a compression cavity.

3. The compression pump assembly as described in claim 2, characterized in that, The air compressor pump assembly (110) is integrated and housed in the compression chamber, and the dryer assembly (120) is integrated and housed in the drying chamber. The drying chamber and the compression chamber are arranged in an axially parallel manner.

4. The compression pump assembly as described in claim 2, characterized in that, The shell is formed using a cast aluminum process.

5. The compression pump assembly as described in claim 3, characterized in that, The drying chambers are respectively located on both sides of the compression chamber.

6. The compression pump assembly as claimed in claim 1, characterized in that, The motor housing is formed using a cast aluminum process.

7. The compression pump assembly as claimed in claim 1, characterized in that, The pump housing (111) and the external seal both adopt an end cap snap-fit ​​and sealing ring structure.

8. An air supply unit for an air suspension system, characterized in that, The air suspension air supply unit includes the compression pump assembly as described in any one of claims 1-7.

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