Airflow distribution mechanism and ventilation system

Abstract

The application discloses a kind of airflow distribution mechanism and ventilation system, which includes: plate body, including upper plate body and lower plate body, the upper plate body is set with the lower plate body and is enclosed into sheet-shaped air cavity;Air injection hole is opened in the upper plate body and is through with the sheet-shaped air cavity, the air injection hole includes multiple, multiple air injection hole matrix arrangement is in the upper plate body;Valve structure is arranged at each air injection hole;When the area corresponding to the valve structure does not receive pressure from the carrier, the valve structure closes the air injection hole;When the area corresponding to the valve structure is subjected to pressure from the carrier, the valve structure opens the air injection hole in response to pressure, and the airflow in the sheet-shaped air cavity can be ejected through the air injection hole.

Description

Technical Field

[0001] This invention relates to the field of ventilation technology for vehicle seats, and more particularly to an airflow distribution mechanism and ventilation system. Background Technology

[0002] A ventilation system (device) for providing airflow to vehicle seats typically includes a blower, an airflow distribution (supply) mechanism located in the seat cushion and / or seat back, and a blower duct connecting the blower and the airflow distribution mechanism. The blower supplies airflow (cold airflow, hot airflow) to the airflow distribution mechanism through the blower duct, and the airflow is then distributed by the airflow distribution mechanism and sprayed onto the surface of the seat.

[0003] Existing airflow distribution mechanisms spray airflow in any area they cover, meaning that airflow is also sprayed in areas that are not in contact with the occupants. Spraying airflow in non-contact areas is not advantageous, for example, it requires the blower to maintain a high operating power, resulting in energy waste (wasting electricity and fuel), and it also excessively affects the temperature and air environment inside the vehicle.

[0004] Although there are existing airflow distribution mechanisms that respond to the pressure of the carrier and only spray airflow in the contact area with the carrier, the means by which the airflow distribution mechanism controls the airflow spray is unreliable, and the manufacturing process of the related structure is also difficult. In addition, some are just ideas that have been proposed, but implementation is very difficult. Summary of the Invention

[0005] To address the aforementioned technical problems in the prior art, embodiments of the present invention provide an airflow distribution mechanism and a ventilation system.

[0006] To solve the above-mentioned technical problems, the technical solution adopted in the embodiments of the present invention is as follows:

[0007] An airflow distribution mechanism, comprising:

[0008] A plate-shaped body, comprising an upper plate and a lower plate, wherein the upper plate and the lower plate are interlocked to form a sheet-shaped air cavity;

[0009] The jet holes are formed in the upper plate and communicate with the sheet-like air cavity. There are multiple jet holes, and the multiple jet holes are arranged in a matrix on the upper plate.

[0010] A valve structure is provided at each of the jet holes; wherein:

[0011] When the area corresponding to the valve structure does not receive pressure from the load, the valve structure closes the jet orifice; when the area corresponding to the valve structure is subjected to pressure from the load, the valve structure opens the jet orifice in response to the pressure, allowing the airflow in the plate-shaped air chamber to be ejected through the jet orifice.

[0012] Preferably, the airflow distribution mechanism further includes an elastic pad layer;

[0013] The elastic padding layer covers the upper plate, and the area of ​​the elastic padding layer corresponding to the jet hole is provided with a ventilation groove.

[0014] The valve structure includes a tapered tip component and a bellows component;

[0015] The conical tip component passes through the jet hole, and the bottom of the conical tip component is located below the jet hole and has an annular wing;

[0016] The upper plate encapsulates the upper end of the bellows component and the lower end of the jet hole; the lower end of the bellows component is encapsulated with the annular wing of the conical tip component.

[0017] The corrugated pipe component has multiple valve holes arranged circumferentially on the straight section of the corrugated pipe wall. In the natural state without axial tension, the curved section of the pipe wall of the corrugated pipe component causes the straight sections to overlap and close the valve holes. In the state of axial tension, the straight section of the corrugated pipe component unfolds and opens the valve holes.

[0018] The top of the conical tip component moves downward in response to pressure, pulling the lower end of the bellows component downward to unfold the straight section and open the valve orifice, thereby allowing the airflow in the plate-shaped air chamber to flow through the valve orifice to the jet orifice.

[0019] Preferably, the airflow distribution component further includes a flexible sheet, which is attached and fixed to the lower plate surface of the upper plate, and the conical tip component and the corrugated pipe component are integrally formed on the flexible sheet by injection molding.

[0020] Preferably, the airflow distribution mechanism further includes a skin layer that covers the elastic pad layer, and the area of ​​the skin layer corresponding to the jet hole is provided with circumferentially arranged air blowing micro-holes.

[0021] Preferably, the airflow distribution mechanism further includes a disc-shaped support;

[0022] The disc-shaped support includes a hollowed-out portion formed by multiple spokes; the disc-shaped portion is located between the conical tip component and the skin layer, the edge of the disc-shaped component is attached and fixed to the bottom of the skin layer, the middle region of the disc-shaped component is lower than the edge of the disc-shaped component, and the middle region of the disc-shaped component corresponds to the top of the conical tip component.

[0023] Preferably, the central region of the disc-shaped component has a ball-shaped socket, and the top of the conical tip component is bonded to the ball-shaped socket.

[0024] Preferably, a rectangularly arranged support portion is provided between the upper plate and the lower plate, and the support portion maintains the sheet-like air cavity by supporting the upper plate and the lower plate.

[0025] Preferably, the support part is a conical column, and the conical column is integrally formed with the lower plate.

[0026] Preferably, the elastic padding layer comprises a sponge or a composite of a sponge and a spring; the skin layer comprises a fabric layer or a leather layer.

[0027] The present invention also discloses a ventilation device, including: a blower, a blower duct, and the aforementioned airflow distribution mechanism, wherein the airflow distribution mechanism is disposed in the seat cushion and / or backrest of the seat.

[0028] Compared with the prior art, the beneficial effects of the airflow distribution mechanism and ventilation system disclosed in this invention are:

[0029] 1. The airflow distribution mechanism provided by the present invention only sprays airflow to the area in contact with the passenger, and does not spray airflow to the non-contact area, thereby helping to reduce the operating power of the ventilation system (blower) and reducing the impact of airflow on the temperature and air environment inside the vehicle.

[0030] 2. The design cleverly utilizes the stacking and unfolding of the straight sections of the bellows component to control the opening and closing of the jet orifice, and uses the conical apex component to drive the bellows component to deform in response to pressure.

[0031] 3. Another advantage of using the bellows component and the conical tip component to control the opening and closing of the jet orifice is that when the conical tip component is not under pressure, the pressure in the plate-shaped air chamber applies a pre-tightening thrust to the conical tip component, thereby pressing the conical tip component against the bellows component, thus keeping the bellows component in a relatively stable stacked state, thereby achieving a better closing effect on the valve orifice.

[0032] The overview of various implementations or examples of the technology described in this invention is not a complete disclosure of the full scope or all features of the disclosed technology. Attached Figure Description

[0033] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to explain embodiments of the invention. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0034] Figure 1 This is a top view of the airflow distribution mechanism provided by the present invention.

[0035] Figure 2 for Figure 1 AA section view.

[0036] Figure 3 This is a partial cross-sectional view of the airflow distribution mechanism provided by the present invention (with the seat in an uncompressed state).

[0037] Figure 4 A partial cross-sectional view of the airflow distribution mechanism provided by the present invention (with the seat under pressure).

[0038] Figure label:

[0039] 10-Plate-shaped body; 11-Upper plate; 111-Air jet hole; 12-Lower plate; 13-Sheet-shaped air chamber; 14-Support part; 20-Valve structure; 21-Conical tip component; 211-Annular wing; 22-Belled pipe component; 221-Straight section; 222-Bent section; 23-Valve hole; 30-Elastic pad; 31-Ventilation groove; 40-Skin layer; 41-Blowing micropore; 50-Disc-shaped support; 51-Hollowed part; 60-Flexible sheet; 70-Connecting component; 71-Expansion part; 72-Dating part. Detailed Implementation

[0040] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0042] Embodiments of the present invention disclose an airflow distribution mechanism and a ventilation system including the airflow distribution mechanism. The ventilation system further includes a blower and a blower duct. The airflow distribution mechanism is arranged in the seat cushion and / or backrest of a vehicle seat. The blower may be located at the bottom of the seat or the rear side of the backrest. The blower is connected to the airflow distribution mechanism through the blower duct. The blower provides airflow to the airflow distribution mechanism through the blower duct, thereby providing airflow to the surface of the seat cushion and / or backrest through the airflow distribution mechanism to provide a comfortable riding experience for the occupant.

[0043] like Figures 1 to 4As shown, the airflow distribution mechanism includes a main body and a connecting part 70. The main body includes a plate-shaped body 10, which includes an upper plate 11 and a lower plate 12 with a rectangular shape. The upper plate 11 and the lower plate 12 can be made of medium-hardness plastic or nylon. The upper plate 11 and the lower plate 12 are interlocked with a certain gap, and the three sides of the upper plate 11 are sealed with the three sides of the lower plate 12. Thus, the upper plate 11 and the lower plate 12 form a sheet-like air cavity 13 with only one open side. The connecting part 70 includes a rectangular expansion part 71 and a docking part 72 formed at the rear end of the expansion part 71. The docking part 72 docks with the far end of the blower duct, and the expansion part 71 docks with the open side of the sheet-like air cavity 13. Thus, the airflow provided by the blower can enter the sheet-like air cavity 13 through the blower duct and the open side of the sheet-like air cavity 13. The upper plate 11 of the plate-shaped body 10 has its upper surface aligned with the surface of the seat, i.e., the upper surface of the upper plate 11 faces the surface of the seat. Therefore, when a passenger sits on the seat, the passenger exerts pressure on the airflow distribution mechanism that is approximately perpendicular to the plate-shaped body 10. Preferably, a plurality of support portions 14 are arranged in a matrix on the upper surface of the lower plate 12. These support portions 14 can be configured as conical columns, which can be integrally injection molded with the upper plate 11. The top of the support portion 14 abuts against the upper plate 11, thereby limiting the deformation of the upper plate 11 under pressure, thus maintaining the thickness of the sheet-like air cavity 13 and preventing the sheet-like air cavity 13 from being crushed.

[0044] The upper plate 11 is provided with a matrix of jet holes 111, which are arranged throughout the upper plate 11. The jet holes 111 penetrate the upper plate 11 in thickness, so that the airflow in the sheet-like air chamber 13 can be ejected upward through the jet holes 111. Each area where the jet hole 111 is located is provided with a valve structure 20. The valve structure 20 specifically includes a conical tip component 21 and a bellows component 22. The conical tip component 21 has a conical column shape. The size of the top of the conical tip component 21 is smaller than the size of the bottom. The bottom of the conical tip component 21 has a radially outer annular wing 211. The conical tip component 21 passes through the jet hole 111. The bottom of the conical tip component 21 is located below the jet hole 111, and the top of the conical tip component 21 protrudes above the jet hole 111. The bellows component 22 can be made of a material that is both flexible and elastic, such as silicone or rubber. The conical tip component 21 can be made of the same material as the bellows component 22, so that the bellows has the characteristic of returning to its original position after deformation. The corrugated state of the bellows component 22 is configured such that, in the natural state where the two ends of the bellows component 22 are not subjected to axial tension, the straight section 221 of the bellows component 22 is in a stacked state while being maintained by the bent section 222. When the two ends of the bellows component 22 are subjected to axial tension, the straight section 221 of the bellows component 22 unfolds. Furthermore, each straight section 221 of the bellows component 22 has a plurality of circumferentially arranged valve holes 23 in its region. Thus, when the straight section 221 of the bellows component 22 is in a stacked state, the valve holes 23 are closed, and when the straight section 221 of the bellows component 22 unfolds, the valve holes 23 are opened.

[0045] The upper end of the bellows component 22 is connected and sealed to the bottom of the upper plate 11 surrounding the jet hole 111. Thus, the upper end of the bellows component 22 is connected and communicated with the jet hole 111, and the lower end of the bellows component 22 is connected and sealed to the annular wing 211 of the conical tip component 21. Thus, the vertical movement of the conical tip component 21 can apply a pulling force to the bellows component 22, causing the straight section 221 to unfold, thereby opening the valve hole 23.

[0046] An elastic padding layer 30 is provided on the upper plate 11. This elastic padding layer 30 serves as the inner layer of the seat cushion or backrest. The elastic padding layer 30 has the characteristic of decreasing thickness under pressure and returning to its original thickness after the pressure is removed. The elastic padding layer 30 can be made of a sponge with good recovery ability, or a spring can be installed in the sponge to increase the recovery ability. A ventilation groove 31 is provided in the area of ​​the elastic padding layer 30 corresponding to the jet hole 111 to prevent the airflow ejected from the jet hole 111 from being blocked by the elastic padding layer 30. The top of the conical tip member 21 is flush with or slightly lower than the upper surface of the elastic padding layer 30. In this way, when the surface of the seat is pressed and the elastic padding layer 30 contracts, the top of the conical tip member 21 can receive pressure and move downward to pull the lower end of the bellows member 22. Preferably, an air barrier layer (not shown) is covered on the wall of the ventilation groove 31 to prevent the airflow from entering the elastic pad layer 30 laterally as it passes through the ventilation groove 31. The air barrier layer may be formed by colloidal coating.

[0047] The elastic padding layer 30 is covered with a skin layer 40, which serves as the surface layer of the seat. The skin layer 40 can be made of dense fabric or leather. Numerous air blowing micro-holes 41 are arranged in the area of ​​the skin layer 40 corresponding to the air jet 111 and the ventilation channel 31. After passing through the air jet 111 and the ventilation channel 31, the airflow is blown towards the occupant from the air blowing micro-holes 41.

[0048] Based on the above, we can conclude that:

[0049] When the passenger is not seated, such as Figure 3 As shown, the seat (the surface of the seat cushion and backrest) is not under pressure. At this time, the top of the conical tip component 21 is not under pressure, the conical tip component 21 is in the upper position, the straight section 221 of the bellows component 22 is in a stacked state, the valve port 23 is closed by the bellows component 22, the airflow in the plate-shaped air chamber 13 is blocked by the bellows component 22 and will not flow to the jet port 111, and the surface of the seat will not spray airflow.

[0050] When the passenger is seated, such as Figure 4As shown, the area of ​​the seat that contacts the occupant is subjected to the pressure of the occupant. The cushion layer is compressed and its thickness decreases. The skin layer 40 moves downward and pushes the conical tip component 21 downward (this is called downward movement when installed on the seat cushion; if installed on the backrest, it is called backward movement). The downward movement of the conical tip component 21 pulls the lower end of the bellows component 22, and the straight section 221 of the bellows component 22 unfolds. The valve port 23 opens, and the airflow in the plate-shaped air chamber 13 blows towards the occupant through the valve port 23, the jet port 111, the ventilation groove 31, and the blowing micro-hole 41. The area of ​​the seat that does not contact the occupant is hardly compressed. Therefore, the conical tip component 21 in the non-contact area will not move downward, so the valve port 23 will not open, and the jet port 111 and the blowing micro-hole 41 corresponding to the non-contact area will not eject airflow.

[0051] In addition, when the conical tip component 21 is not under pressure, the pressure in the plate-shaped air chamber 13 applies a pre-tightening thrust to the conical tip component 21, thereby pressing the conical tip component 21 against the bellows component 22, thus keeping the bellows component 22 in a more stable stacked state, thereby providing a better closing effect on the valve orifice 23.

[0052] In some preferred embodiments, a flexible sheet 60 is also bonded to the lower surface of the upper plate 11. The flexible sheet 60 may be made of silicone material. In these embodiments, the flexible sheet 60 is integrally injection molded with the rectangularly arranged valve structure 20 (including the conical tip component 21 and the bellows component 22). The stacked state of the pipe wall of the bellows component 22 can be formed by hot pressing with a mold. In this way, the valve structure 20 and the flexible sheet 60 can be integrally and quickly formed, which helps to reduce the manufacturing cost and difficulty of the airflow distribution mechanism.

[0053] In some preferred embodiments, a disc-shaped support 50 is provided between the area where each group of blowing micro-holes 41 of the skin layer 40 is located and the conical tip member 21. The disc-shaped support 50 includes an edge region, a central region, and spokes arranged circumferentially between the central region and the edge region. The spokes form a hollow portion 51 to allow airflow to pass through. The central region of the disc-shaped support 50 is lower than the edge region. The edge region is bonded and fixed to the bottom of the skin layer 40, so that the central region is away from the skin layer 40. The central region has a ball-and-socket joint. The top of the conical tip member 21 abuts against the ball-and-socket joint. Furthermore, a plurality of blowing micro-holes 41 are arranged circumferentially. Thus, when the skin layer 40 is under pressure, the skin layer 40 is pushed against the top of the conical tip member 21 by the disc-shaped support 50, and the top of the conical tip member 21 will not directly contact the skin layer 40, thereby avoiding the top of the conical tip member 21 from applying greater pressure to the passenger, thereby avoiding the passenger from experiencing a foreign body sensation.

[0054] Furthermore, although exemplary embodiments have been described in this invention, their scope includes any and all embodiments based on the invention that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, and such examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the full scope of the following claims and their equivalents.

[0055] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments can be used by those skilled in the art when reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the invention. This should not be construed as an intention that a disclosed feature, which is not claimed, is necessary for any claim. Rather, the subject matter of the invention may be less than all the features of the particular disclosed embodiments. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is independently considered as a separate embodiment, and these embodiments are contemplated as being able to be combined with each other in various combinations or arrangements. The scope of the invention should be determined by reference to the appended claims and the full scope of their equivalents.

[0056] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. An airflow distribution mechanism, characterized in that, include: A plate-shaped body, comprising an upper plate and a lower plate, wherein the upper plate and the lower plate are interlocked to form a sheet-shaped air cavity; The jet holes are formed in the upper plate and communicate with the sheet-like air cavity. There are multiple jet holes, and the multiple jet holes are arranged in a matrix on the upper plate. A valve structure is provided at each of the jet holes; wherein: When the area corresponding to the valve structure does not receive pressure from the load, the valve structure closes the jet orifice; when the area corresponding to the valve structure is subjected to pressure from the load, the valve structure opens the jet orifice in response to the pressure, allowing the airflow in the plate-shaped air chamber to be ejected through the jet orifice. The airflow distribution mechanism also includes an elastic pad layer; The elastic padding layer covers the upper plate, and the area of ​​the elastic padding layer corresponding to the jet hole is provided with a ventilation groove. The valve structure includes a tapered tip component and a bellows component; The conical tip component passes through the jet hole, and the bottom of the conical tip component is located below the jet hole and has an annular wing; The upper plate encapsulates the upper end of the bellows component and the lower end of the jet hole; the lower end of the bellows component is encapsulated with the annular wing of the conical tip component. The corrugated pipe component has multiple valve holes arranged circumferentially on the straight section of the corrugated pipe wall. In the natural state without axial tension, the curved section of the pipe wall of the corrugated pipe component causes the straight sections to overlap and close the valve holes. In the state of axial tension, the straight section of the corrugated pipe component unfolds and opens the valve holes. The top of the conical tip component moves downward in response to pressure, pulling the lower end of the bellows component downward to unfold the straight section and open the valve orifice, thereby allowing the airflow in the plate-shaped air chamber to flow through the valve orifice to the jet orifice.

2. The airflow distribution mechanism according to claim 1, characterized in that, The airflow distribution mechanism also includes a flexible sheet, which is attached and fixed to the lower plate surface of the upper plate. The conical tip component and the corrugated pipe component are integrally formed on the flexible sheet by injection molding.

3. The airflow distribution mechanism according to claim 1, characterized in that, The airflow distribution mechanism further includes a skin layer that covers the elastic pad layer, and the area of ​​the skin layer corresponding to the jet hole is provided with circumferentially arranged blowing micro-holes.

4. The airflow distribution mechanism according to claim 3, characterized in that, The airflow distribution mechanism also includes a disc-shaped support; The disc-shaped support includes a hollow section formed by multiple spokes; the hollow section is located between the conical tip component and the skin layer, the edge of the hollow section is attached to and fixed to the bottom of the skin layer, the middle region of the hollow section is lower than the edge of the disc-shaped component, and the middle region of the hollow section corresponds to the top of the conical tip component.

5. The airflow distribution mechanism according to claim 4, characterized in that, The central region of the disc-shaped component has a ball-shaped socket, and the top of the conical tip component is bonded to the ball-shaped socket.

6. The airflow distribution mechanism according to claim 1, characterized in that, A rectangular support portion is provided between the upper plate and the lower plate, and the support portion maintains the sheet-like air cavity by supporting the upper plate and the lower plate.

7. The airflow distribution mechanism according to claim 6, characterized in that, The support part is a conical column, and the conical column is integrally formed with the lower plate.

8. The airflow distribution mechanism according to claim 3, characterized in that, The elastic padding layer includes a sponge or a composite of a sponge and a spring; the skin layer includes a fabric layer or a leather layer.

9. A ventilation device, comprising: The blower and the blower duct are characterized in that they further include an airflow distribution mechanism as described in any one of claims 1 to 8, wherein the airflow distribution mechanism is disposed in the seat cushion and / or backrest of the seat.

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