air supply unit

Abstract

The application provides an air supply unit, and relates to the technical field of air suspension, which optimizes the structure of the air supply unit, increases the air supply mode, and improves the integration and space utilization of the air supply unit. The air supply unit comprises a bearing seat, a drying mechanism, a gas storage mechanism, a gas supply mechanism and a control valve assembly. The gas supply mechanism is connected with one end of the bearing seat. The other end of the bearing seat is internally formed with an air channel. The control valve assembly is arranged at one end of the bearing seat formed with the air channel and is in communication with the air channel. The drying mechanism is arranged in the bearing seat. The gas storage mechanism is sleeved with one end of the bearing seat provided with the gas supply mechanism, and the gas supply mechanism is located in the interior of the gas storage mechanism.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air suspension, in particular to an air supply unit. BACKGROUND

[0002] The air suspension can provide more excellent and stable damping effect for the vehicle through the control of the intake and exhaust by the vehicle computer, and is more and more applied in the damping field of the vehicle to improve the comfort of the vehicle.

[0003] At present, when the air spring needs to be supplied with gas, air is usually sucked from the external environment and compressed into high-pressure gas by a compressor and then delivered into the air spring. Although this method can realize the function of the air spring, in some harsh environments, impurities and other pollutants may enter the interior of the air spring, affecting the use of the air spring. Moreover, the integration of the air supply unit at the present stage is low, and the space utilization is unreasonable, making it difficult to realize the lightweight of the air spring.

[0004] Therefore, there is an urgent need to provide an air supply unit to solve the problems existing in the prior art to some extent. SUMMARY

[0005] The purpose of the present application is to provide an air supply unit to optimize the structure of the air supply unit to some extent, increase the air supply mode, and improve the integration and space utilization of the air supply unit.

[0006] The air supply unit provided by the present application comprises a bearing seat, a drying mechanism, a gas storage mechanism, a gas supply mechanism and a control valve assembly; the gas supply mechanism is connected to one end of the bearing seat, an air passage is formed in the other end of the bearing seat, the control valve assembly is arranged at one end of the bearing seat forming the air passage and is in communication with the air passage; the drying mechanism is arranged in the bearing seat, the gas storage mechanism is sleeved on one end of the bearing seat provided with the gas supply mechanism, and the gas supply mechanism is located in the interior of the gas storage mechanism.

[0007] The air supply unit further comprises a pressure relief valve, a containing cavity is formed in the bearing seat, the drying mechanism is arranged in the containing cavity and is connected to the pressure relief valve; a communication air passage is formed between the drying mechanism and the pressure relief valve, and the pressure relief valve can open or close the communication air passage to adjust the internal pressure of the drying mechanism.

[0008] Specifically, the number of the drying mechanisms is multiple, and the number of the containing cavities in the bearing seat corresponds to the number of the drying mechanisms; each of the multiple drying mechanisms comprises a dryer main body connected to the pressure relief valve.

[0009] Further, the air supply unit provided by the present application further comprises an air filter, which is arranged in the bearing seat and parallel to the drying mechanism.

[0010] Further, the pressure relief valve comprises a valve body, a cover body and a valve core assembly; the valve body is connected with the dryer body, the cover body covers the side of the valve body away from the dryer body and forms a bearing cavity with the valve body, and the communication air channel is connected with the bearing cavity; the valve core assembly comprises a valve core and an elastic member, one end of the elastic member abuts against the cover body, and the other end is connected with the valve core, so that the valve core can open or close the communication air channel.

[0011] The air storage mechanism comprises an air storage cabin and a connecting member, one end of the connecting member is connected with one end of the bearing seat, and the other end of the connecting member is connected with the open end of the air storage cabin.

[0012] Specifically, the connecting member comprises a butt joint member and a clamping member; one end of the butt joint member is connected with the air storage cabin, and the other end is connected with the bearing seat, and the clamping member is arranged outside the butt joint member to clamp the butt joint member, so that the butt joint member is fixedly connected with the bearing seat.

[0013] The air supply mechanism comprises an air pump and a piston member; the air pump is connected with the bearing seat, and the piston member is arranged in the bearing seat, and one end of the air pump is arranged in the bearing seat and connected with the piston member, and the other end is arranged outside the bearing seat.

[0014] Specifically, the control valve assembly comprises a control valve, a control plate member and a pressure detection member; one end of the control valve is arranged in the bearing seat and connected with the air channel, the other end of the control valve is arranged outside the bearing seat and connected with the control plate member; a communication cavity is formed in the bearing seat, the air channel is connected with the communication cavity, the pressure detection member is connected with the bearing seat, and one end of the pressure detection member is arranged in the bearing seat and in the communication cavity.

[0015] Further, the control valves are multiple, and the multiple control valves include multiple gas supply control valves, multiple gas inlet control valves, and at least one gas outlet valve; the positions corresponding to the gas supply control valves in the bearing seat are formed with gas supply channels, the positions corresponding to the gas inlet control valves are formed with gas inlet channels, and the positions corresponding to the gas outlet valves are formed with gas outlet channels; the gas supply channels are connected with the gas outlets of the gas supply mechanisms and the communication cavities respectively, and the gas supply channels pass through the bearing seat to form gas supply outlets; the gas inlet channels are connected with the gas inlets of the gas supply mechanisms and the communication cavities respectively, one end of the gas outlet channels is connected with the communication cavities, and the other end of the gas outlet channels is connected with the atmosphere by passing through the bearing seat.

[0016] Compared with the prior art, the air supply unit provided by the application has the following advantages:

[0017] The air supply unit provided by the application comprises a bearing seat, a drying mechanism, a gas storage mechanism, a gas supply mechanism, and a control valve assembly; the gas supply mechanism is connected with one end of the bearing seat, the inside of the other end of the bearing seat is formed with a gas channel, the control valve assembly is arranged at the end of the bearing seat where the gas channel is formed and is connected with the gas channel; the drying mechanism is arranged in the bearing seat, the gas storage mechanism is sleeved with the end of the bearing seat where the gas supply mechanism is arranged, and the gas supply mechanism is arranged in the inside of the gas storage mechanism.

[0018] According to the analysis, by integrating the gas storage mechanism, the gas supply mechanism, the drying mechanism, and the control valve assembly on the bearing seat, the integration degree of the air supply unit can be greatly improved, and the space of the bearing seat can be fully utilized.

[0019] In addition, in the application, the gas storage mechanism is connected with one end of the bearing seat, and the gas supply mechanism is arranged in the gas storage mechanism, so that the gas supply mechanism can be protected to a certain extent by the gas storage mechanism, and the vibration and noise generated by the gas supply mechanism during operation can be blocked to a certain extent.

[0020] By connecting the control valve assembly with the bearing seat and by arranging the gas channel in the bearing seat, the control valve assembly can open and block the gas channel, so that the gas inlet of the gas supply mechanism and the air supply function of the air spring can be realized.

[0021] In the application, the drying mechanism is also integrated in the bearing seat, so that the air supplied into the air spring can be dried by the drying mechanism, thereby avoiding the problem that the air with high humidity enters the air spring and causes the deposition of condensate water in the air spring, which affects the use.

[0022] And, since the bearing seat in the application is connected with the air storage mechanism, in addition to the way of supplying air to the air spring by sucking external air in the prior art, the air storage mechanism can also directly provide a stable clean air source to the air supply mechanism, realizing the function of supplying air to the air spring, increasing the air supply mode, and making the use of the air spring more flexible and stable. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0024] Figure 1 The structure schematic diagram of the air supply unit provided by the embodiment of the present application is shown in the figure.

[0025] Figure 2 The sectional view of the air supply unit provided by the embodiment of the present application is shown in the figure.

[0026] Figure 3 The sectional view of the drying mechanism in the air supply unit provided by the embodiment of the present application in the bearing seat is shown in the figure.

[0027] Figure 4 The structure schematic diagram of the air supply mechanism and the control valve assembly in the air supply unit provided by the embodiment of the present application is shown in the figure. Figure 2 The local enlarged view of A in the figure.

[0028] Figure 5 The structure schematic diagram of the air supply mechanism and the control valve assembly in the air supply unit provided by the embodiment of the present application is shown in the figure.

[0029] Figure 6 The sectional view of the control valve assembly and the bearing seat in the air supply unit provided by the embodiment of the present application is shown in the figure.

[0030] In the figure: 1-bearings seat; 101-air channel; 102-air supply port; 103-annular convex part; 104-air filter; 2-drying mechanism; 201-first drying mechanism; 202-second drying mechanism; 2011-containing shell; 203-pressure relief valve; 2031-valve body; 2032-valve core; 2033-elastic member; 2034-cover; 2035-communication air channel; 2036-pressure relief channel; 3-air storage mechanism; 301-air storage cabin; 3011-drainage port; 302-connection member; 3021-abutment; 3022-hooping member; 3023-annular groove; 4-air supply mechanism; 401-air pump; 402-piston member; 5-control valve; 501-mechanical section; 502-electrical section; 6-PCB; 7-control panel; 8-pressure detection member; 9-protective cover. DETAILED DESCRIPTION

[0031] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description and cannot be understood as indicating or implying relative importance.

[0033] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0034] In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "communication", "connection" should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] As used herein, the term "and / or" includes any one of the listed related items and any combination of any two or more of the listed items.

[0036] For ease of description, spatial relation terms such as “above,” “upper,” “below,” and “lower” may be used herein to describe the relationship between one element and another as shown in the accompanying drawings. Such spatial relation terms are intended to include not only the orientation depicted in the drawings but also the different orientations of the device during use or operation.

[0037] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0038] Variations in the shapes shown in the accompanying drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the accompanying drawings, but include changes in shape that may occur during manufacturing.

[0039] The features of the examples described herein can be combined in various ways that will be apparent upon understanding the disclosure of this application. Furthermore, although the examples described herein have various constructions, other constructions are possible, as will be apparent upon understanding the disclosure of this application. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis that they can be implemented by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0040] like Figures 1-6 As shown, the present invention provides an air supply unit, including a support 1, a drying mechanism 2, an air storage mechanism 3, an air supply mechanism 4, and a control valve assembly; the air supply mechanism 4 is connected to one end of the support 1, and an air passage 101 is formed inside the other end of the support 1; the control valve assembly is disposed at the end of the support 1 where the air passage 101 is formed and is connected to the air passage 101; the drying mechanism 2 is disposed inside the support 1, and the air storage mechanism 3 is sleeved on the end of the support 1 where the air supply mechanism 4 is disposed, and the air supply mechanism 4 is located inside the air storage mechanism 3.

[0041] Compared with existing technologies, the air supply unit provided by this invention has the following advantages:

[0042] The air supply unit provided by the present invention integrates the air storage mechanism 3, the air supply mechanism 4, the drying mechanism 2 and the control valve assembly on the support base 1, thereby greatly improving the integration of the air supply unit and making full use of the space of the support base 1.

[0043] And, since the gas storage mechanism 3 in the application is connected with one end of the bearing seat 1, and the gas supply mechanism 4 is arranged in the gas storage mechanism 3, the gas supply mechanism 4 can be protected to a certain extent by the gas storage mechanism 3, and the vibration and noise generated by the gas supply mechanism 4 during operation can be blocked to a certain extent.

[0044] And by connecting the control valve assembly with the bearing seat 1, and by the gas passage 101 corresponding to the bearing seat 1, the air inlet of the gas supply mechanism 4 and the air supply function of the air spring can be realized by opening and blocking the gas passage 101 by the control valve assembly.

[0045] Since the drying mechanism 2 is also integrated in the bearing seat 1 in the application, the air supplied into the air spring can also be dried by the drying mechanism 2, so that the problem of condensate deposition in the air spring caused by the air with high humidity can be avoided to a certain extent.

[0046] And, since the bearing seat 1 in the application is connected with the gas storage mechanism 3, in addition to the way of supplying air to the air spring by sucking external air in the prior art, the gas storage mechanism 3 can also provide a stable and clean air source directly to the gas supply mechanism 4 to realize the air supply function of the air spring, increase the air supply mode, and make the use of the air spring more flexible and stable.

[0047] Based on the above structure, as Figure 2 As shown in Figure 3 The number of drying mechanisms 2 in the application can be multiple, and preferably, the drying mechanism 2 in the application includes a first drying mechanism 201 and a second drying mechanism 202, the bearing seat 1 is provided with a first containing cavity and a second containing cavity, the first drying mechanism 201 is arranged in the first containing cavity, the second drying mechanism 202 is arranged in the second containing cavity, and the first containing cavity and the second containing cavity are communicated.

[0048] By making the first containing cavity and the second containing cavity communicate, the first drying mechanism 201 installed in the first containing cavity and the second drying mechanism 202 installed in the second containing cavity can be communicated, so that the drying capacity and efficiency of the whole air supply unit to the air can be increased.

[0049] It should be noted here that, as Figure 3As shown, the first drying mechanism 201 and the second drying mechanism 202 in the application each include a dryer main body, and the dryer main body in the application includes a hollow accommodating shell 2011 arranged in a hollow manner and a drying agent filled in the accommodating shell 2011. The hollow accommodating shell 2011 can not only reduce the weight of the dryer main body, but also improve the air permeability of the dryer main body. The drying agent in the application is in a granular form. Accordingly, in order to ensure that the drying agent can be stably stored in the accommodating shell 2011, the nylon net is sleeved outside the accommodating shell 2011, and the mesh size of the nylon net is smaller than the diameter of the drying agent, so that the problem of the drying agent moving around can be avoided to a certain extent.

[0050] It should be further pointed out here that the two accommodating cavities and the two drying mechanisms 2 in the bearing seat 1 are only one of the embodiments. As shown in Figure 2 As shown, the number of the drying mechanism 2 in the application can also be one, and the number of the drying mechanism 2 can be appropriately increased according to the requirements on the premise that the space condition in the bearing seat 1 meets the requirements.

[0051] Preferably, as shown in Figure 2 As shown in Figure 3 As shown, the first drying mechanism 201 and the second drying mechanism 202 in the application each include a dryer main body; the bearing seat 1 is formed with an accommodating cavity, and the dryer main body and the pressure relief valve 203 are arranged in the accommodating cavity, and the dryer main body and the pressure relief valve 203 are formed with a communication air channel 2035, and the pressure relief valve 203 can open or close the communication air channel 2035.

[0052] The pressure relief valve 203 is connected with the dryer main body in the application, which can improve the space utilization of the overall structure on the one hand, and can improve the stability of the dryer main body during operation on the other hand. When the air pressure in the dryer main body is too large, the pressure relief valve 203 can open the communication air channel 2035, so that part of the air in the dryer main body can be discharged, thereby ensuring the stability of the air pressure in the dryer main body to a certain extent.

[0053] It can be understood that, since the first accommodating cavity and the second accommodating cavity in the application are connected with each other, the pressure relief valve 203 in the application can be integrated with any one of the drying mechanisms 2, and the pressure relief protection function can also be realized by connecting one pressure relief valve 203 with the first drying mechanism 201 and the second drying mechanism 202 respectively.

[0054] Preferably, as shown in Figure 3As shown, the pressure relief valve 203 provided by the present application comprises a valve body 2031, a cover body 2034 and a valve core 2032 assembly; the valve body 2031 is connected with the dryer body, the cover body 2034 is capped on the side of the valve body 2031 away from the dryer body, and forms a bearing cavity with the valve body 2031, and a communication air channel 2035 is connected with the bearing cavity; the valve core 2032 assembly comprises the valve core 2032 and an elastic member 2033, one end of the elastic member 2033 is in abutment with the cover body 2034, and the other end is connected with the valve core 2032, so that the valve core 2032 can open or close the communication air channel 2035.

[0055] To ensure that the valve body 2031 is more closely connected with the dryer body, in the present application, one end of the valve body 2031 corresponding to the valve body 2031 forms a stepped insertion part, and the valve body 2031 corresponding to the position of the insertion part forms an insertion slot, so that through the butt joint of the insertion part and the insertion slot, the close connection between the dryer body and the valve body 2031 is realized.

[0056] The above-mentioned communication air channel 2035 is formed on the valve body 2031, the valve body 2031 and the cover body 2034 form a bearing cavity, one end of the communication air channel 2035 is connected with the bearing cavity, and the other end is connected with the containing cavity. Since the valve core 2032 assembly in the present application comprises the valve core 2032 and the elastic member 2033, when the air pressure in the drying mechanism 2 is too large, the gas enters the bearing cavity from the communication air channel 2035 and pushes the valve body 2031 to move away from the communication air channel 2035, compressing the elastic member 2033, so that the communication air channel 2035 can be opened. In the present application, the valve body 2031 and the cover body 2034 also form a pressure relief channel 2036, the gas enters the bearing cavity from the communication air channel 2035 and is discharged from the pressure relief channel 2036, so that the stability of the air pressure inside the drying mechanism 2 can be maintained.

[0057] When the pressure relief is completed, the valve core 2032 loses the pushing force of the gas, the compressed elastic member 2033 returns to the initial state, thereby pushing the valve core 2032 to move in the direction close to the communication air channel 2035, until the communication air channel 2035 is closed, thereby completing a pressure relief operation.

[0058] It should be noted here that the bearing seat 1 in the present application also has a third containing cavity, and the air filter 104 is arranged in the third containing cavity, and preferably, the air filter 104 in the present application is arranged in parallel with the first drying mechanism 201 and the second drying mechanism 202. When the air pressure in the drying mechanism is too high and is relieved by the pressure relief valve 203, the gas discharged through the pressure relief channel 2036 is discharged to the atmosphere through the air filter 104.

[0059] It should be further noted here that, in order to ensure the sealing degree between the dryer body and the pressure relief valve 203 and the bearing seat 1, the sealing ring 204 is arranged between the valve body 2031 and the bearing seat 1. Figure 3As shown, the outer wall surface of the containing shell 2011, the outer wall surface of the valve body 2031 and the outer wall surface of the cover body 2034 are all sleeved with sealing rings, so that the sealing effect between the drying mechanism 2 and the bearing seat 1 can be ensured to a certain extent.

[0060] Optionally, as Figure 1 In combination Figure 4 As shown, the air storage mechanism 3 in the application includes an air storage cabin 301 and a connecting member 302, one end of the connecting member 302 is connected with one end of the bearing seat 1, and the other end of the connecting member 302 is connected with an open end of the air storage cabin 301.

[0061] The air storage cabin 301 in the application is used for storing air and is connected with the bearing seat 1 through the connecting member 302, so as to provide a stable and clean air source for the air spring. Due to external environmental factors, the humidity of the air entering the air storage cabin 301 is different, when the air humidity is large, condensate water is easily generated in the air storage cabin 301, thereby affecting the capacity of the air storage cabin 301 and the ability of the air spring to deliver air. Moreover, when the air supply unit is combined with the air spring, the air supply unit extends in the vertical direction, therefore, the application opens a drain port 3011 at the end of the air storage cabin 301 away from the bearing seat 1, that is, the bottom end of the air supply unit in the actual installation state opens the drain port 3011, when water accumulates in the air storage cabin 301, the water can be directly drained through the drain port 3011, so as to ensure the stability of the air spring operation to a certain extent.

[0062] Moreover, since the air supply mechanism 4 in the application is located in the air storage cabin 301, the air storage cabin 301 can not only protect the air supply mechanism 4 from dust and other impurities, but also block the vibration and noise generated by the air supply mechanism 4 to a certain extent.

[0063] Preferably, the air storage cabin 301 in the application is made of metal material, so that the air storage cabin 301 can also improve the heat dissipation efficiency of the air supply mechanism 4 to a certain extent, and ensure the stability of the overall mechanism operation.

[0064] Further preferably, as Figure 4 As shown, the connecting member 302 in the application includes a butt joint 3021 and a clamping member 3022, one end of the butt joint 3021 is connected with the air storage cabin 301, and the other end is connected with the bearing seat 1, the clamping member 3022 is sleeved outside the butt joint 3021, and is used for clamping the butt joint 3021 to fixedly connect the butt joint 3021 with the bearing seat 1.

[0065] When installing, first weld the gas storage tank 301 to one end of the adapter 3021, then set the clamping member 3022 outside the adapter 3021, and then connect the other end of the adapter 3021 to the end of the bearing seat 1. Finally, the clamping member 3022 is gathered, so that the adapter 3021 and the bearing seat 1 can be clamped, and the stable connection between the gas storage tank 301 and the bearing seat 1 is realized.

[0066] Preferably, as shown in the drawings, the outer wall surface of the bearing seat 1 in the present application is formed with an annular protrusion 103 along the circumference of the bearing seat 1, and the inner wall surface of the adapter 3021 is formed with an annular groove 3023 along the circumference of the adapter 3021, and the annular protrusion 103 can be clamped into the annular groove 3023 to connect the adapter 3021 and the bearing seat 1. Figure 4

[0067] The annular protrusion 103 formed on the outer wall surface of the bearing seat 1 and the annular groove 3023 formed on the inner wall surface of the adapter 3021 can play a positioning and connecting role in the process of initially connecting the adapter 3021 and the bearing seat 1, that is, when the annular protrusion 103 is clamped into the annular groove 3023, it can position the bearing seat 1 and the adapter 3021 axially, so that the adapter 3021 and the bearing seat 1 can be stably connected, thereby facilitating the gathering of the clamping member 3022.

[0068] Preferably, as shown in the drawings, the outer wall surface of the bearing seat 1 in the present application is formed with an annular protrusion 103 along the circumference of the bearing seat 1, and the inner wall surface of the adapter 3021 is formed with an annular groove 3023 along the circumference of the adapter 3021, and the annular protrusion 103 can be clamped into the annular groove 3023 to connect the adapter 3021 and the bearing seat 1. Figure 5

[0069] The present application can improve the integration and space utilization of the overall unit by integrating the gas supply mechanism 4 on the bearing seat 1. When working, the gas enters the gas pump 401, and the air is compressed into high-pressure air by the piston member 402 into the air duct 101, and then enters the air spring through the air inlet 102.

[0070] The number of piston members 402 in the present application is at least one, and as shown in the drawings, preferably, the number of piston members 402 in the present application is two, and the axes of the two piston members 402 are collinear, so as to maximize the efficiency of compressed air in a limited space. Figure 5

[0071] Specifically, as shown in the drawings, the number of piston members 402 in the present application is at least one, and as shown in the drawings, preferably, the number of piston members 402 in the present application is two, and the axes of the two piston members 402 are collinear, so as to maximize the efficiency of compressed air in a limited space. Figure 5 Figure 6 ​​​​As shown, the control valve assembly in the application includes a control valve 5, a control plate 7 component, and a pressure detection piece 8; one end of the control valve 5 is arranged in the bearing seat 1 and is in communication with the air passage 101, and the other end of the control valve 5 is exposed to the bearing seat 1 and is connected with the control plate 7 component; a communication cavity is formed in the bearing seat 1, the air passage 101 is in communication with the communication cavity, the pressure detection piece 8 is connected with the bearing seat 1, and one end of the pressure detection piece 8 is located in the bearing seat 1 and in the communication cavity.

[0072] The control plate 7 component in the application includes a PCB 6 and a control plate 7, and the mechanical segment 501 of the control valve 5 is arranged in the bearing seat 1 and is in communication with the air passage 101, and the electrical segment 502 is exposed to the bearing seat 1 and is connected with the PCB 6. The PCB 6 in the application is used for circuit connection between the control plate 7 and the control valve 5, and the control plate 7 can drive the control valve 5 to block or open the air passage 101.

[0073] Preferably, the axis of the control valve 5 in the application is perpendicular to the axis of the air pump 401, that is, the air pump 401 is arranged at 90° with the control valve 5, so that the space of the bearing seat 1 can be fully utilized, and the space distribution is more reasonable.

[0074] Further preferably, a communication cavity is formed in the bearing seat 1 in the application, the air outlet and the air inlet of the air supply mechanism 4 are in communication with the communication cavity, and the air supply passage for supplying air to the air spring is also in communication with the communication cavity, that is, the communication cavity in the application is an intermediate station of the air passage 101, and the gas entering the bearing seat 1 needs to enter the communication cavity and then flow to the corresponding air passage 101 to realize different functions. Therefore, the pressure detection piece 8 is further integrated in the bearing seat 1 in the application, and the pressure in the communication cavity can be detected through the pressure detection piece 8, so that adjustments can be made according to the specific pressure conditions to ensure the operation safety and stability of the whole device.

[0075] Preferably, the number of the control valve 5 in the application is multiple, and the multiple control valves 5 include multiple air supply control valves, multiple air inlet control valves, and at least one air outlet valve; the positions corresponding to the air supply control valves in the bearing seat 1 form air supply passages, the positions corresponding to the air inlet control valves form air inlet passages, and the positions corresponding to the air outlet valves form air outlet passages; the air supply passages are in communication with the air outlet of the air supply mechanism 4 and the communication cavity respectively, and pass through the bearing seat 1 to form air supply ports 102; the air inlet passages are in communication with the air inlet of the air supply mechanism 4 and the communication cavity respectively, one end of the air outlet passage is in communication with the communication cavity, and the other end is in communication with the atmosphere through the bearing seat 1.

[0076] The number of the control valves 5 in the application is 9, including one exhaust valve, four air supply control valves and four air inlet control valves, wherein the four air supply control valves are used to supply air to the air spring, and therefore four air supply channels are formed in the bearing seat 1, and one end of the air supply channel is communicated with the air supply control valve, one end is communicated with the communication cavity, and one end is communicated with the air supply port 102. Moreover, the air supply channel in the application is also communicated with the air outlet of the air supply mechanism 4, so that when air is supplied to the air spring, the air supply channel is opened through the air supply control valve, and then the compressed air after compression of the air supply mechanism 4 flows through the air supply channel through the air supply port 102 into the air spring, completing the air supply operation of the air spring.

[0077] Correspondingly, one end of the air inlet channel in the application is communicated with the air inlet of the air supply mechanism 4, and the other end is communicated with the air inlet control valve after passing through the communication cavity, so that the on-off of different air inlet channels can be controlled through the air inlet control valve, and different air supply modes can be selected.

[0078] It can be understood that the exhaust channel in the application is communicated with the communication cavity, so that when the air pressure in the communication cavity is too large, the exhaust channel is opened through the control of the exhaust valve to realize the exhaust of the gas and ensure the stability of the pressure in the whole air channel 101.

[0079] It should be noted here that the number of the control valves 5 in the application is only one of the embodiments, and other numbers of control valves can also be used to realize the functions provided by the application.

[0080] It should be further noted here that the air supply unit provided by the application further comprises a protective cover 9, and the protective cover 9 is arranged at the end of the bearing seat 1 away from the gas storage cabin 301, and can form a protective cavity with the bearing seat 1 for accommodating the plurality of control valves 5, the PCB 6, the control panel 7 and the pressure detection piece 8, so as to improve the service life and stability of the control valve assembly to a certain extent.

[0081] Correspondingly, as shown in Figure 1 The protective cover 9 in the application corresponds to the position of the air supply channel of the bearing seat 1 to form an air supply port 102, so as to realize the gas supply to the air spring.

[0082] The above only describes the preferred embodiments of the application and is not used to limit the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. An air supply unit characterized by comprising: The device comprises a bearing seat, a drying mechanism, a gas storage mechanism, a gas supply mechanism and a control valve assembly; The gas supply mechanism is connected to one end of the bearing seat, and the other end of the bearing seat is internally formed with a gas channel, and the control valve assembly is arranged at the end of the bearing seat where the gas channel is formed and is in communication with the gas channel; The drying mechanism is arranged in the bearing seat, the gas storage mechanism is sleeved on the end of the bearing seat where the gas supply mechanism is arranged, and the gas supply mechanism is located in the interior of the gas storage mechanism; The gas supply mechanism comprises a gas pump and a piston member; The gas pump is connected to the bearing seat, the piston member is arranged in the bearing seat, one end of the gas pump is arranged in the bearing seat and connected to the piston member, and the other end of the gas pump is exposed outside the bearing seat; The control valve assembly comprises a control valve, a control plate member and a pressure detection piece; One end of the control valve is arranged in the bearing seat and is in communication with the gas channel, the other end of the control valve is exposed outside the bearing seat and is connected to the control plate member; The bearing seat is internally formed with a communication cavity, the gas channel is in communication with the communication cavity, the pressure detection piece is connected to the bearing seat, and one end of the pressure detection piece is located in the bearing seat and in the communication cavity.

2. The air supply unit according to claim 1, characterized in that Further comprising a pressure relief valve, the bearing seat is internally formed with a containing cavity, the drying mechanism is arranged in the containing cavity and is connected to the pressure relief valve; The drying mechanism and the pressure relief valve are formed with a communication gas channel, and the pressure relief valve can open or close the communication gas channel to adjust the internal gas pressure of the drying mechanism.

3. The air supply unit according to claim 2, characterized in that The number of the drying mechanisms is plural, and the number of the containing cavities in the bearing seat corresponds to the number of the drying mechanisms; The plurality of drying mechanisms each comprises a dryer main body, and the dryer main body is connected to the pressure relief valve.

4. The air supply unit according to claim 3, characterized in that Further comprising an air filter, the air filter is arranged in the bearing seat and is arranged in parallel with the drying mechanism.

5. The air supply unit according to claim 3, characterized in that The pressure relief valve comprises a valve body, a cover body and a valve core assembly; The valve body is connected to the dryer main body, the cover body covers the side of the valve body away from the dryer main body and forms a bearing cavity with the valve body, and the communication gas channel is in communication with the bearing cavity; The valve core assembly comprises a valve core and an elastic piece, one end of the elastic piece abuts against the cover body, and the other end of the elastic piece is connected to the valve core, so that the valve core can open or close the communication gas channel.

6. The air supply unit according to claim 1, characterized by The gas storage mechanism comprises a gas storage cabin and a connecting member, one end of the connecting member is connected to one end of the bearing seat, and the other end of the connecting member is connected to the open end of the gas storage cabin.

7. The air supply unit according to claim 6, characterized in that The connecting member comprises a butt joint piece and a clamping piece; One end of the butt joint piece is connected to the gas storage cabin, the other end of the butt joint piece is connected to the bearing seat, the clamping piece is sleeved outside the butt joint piece and is used for clamping the butt joint piece to fix the butt joint piece to the bearing seat.

8. The air supply unit according to claim 1, characterized by The end of the bearing seat away from the gas storage mechanism is in a semi-cylindrical structure.

9. The air supply unit according to claim 1, characterized by The number of the control valves is plural, and the plurality of control valves comprise a plurality of gas supply control valves, a plurality of air inlet control valves and at least one air outlet valve; The bearing seat is formed with a gas supply channel corresponding to the position of the gas supply control valve, an air inlet channel corresponding to the position of the air inlet control valve, and an exhaust channel corresponding to the position of the exhaust valve; The gas supply channel is connected with the air outlet of the gas supply mechanism and the communication cavity, and forms a gas supply port through the bearing seat; The air inlet channel is connected with the air inlet of the gas supply mechanism and the communication cavity, and one end of the exhaust channel is connected with the communication cavity and the other end is connected with the atmosphere through the bearing seat.

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