CN114872598B - Seat ventilation system and seat - Google Patents
Seat ventilation system and seat Download PDFInfo
- Publication number
- CN114872598B CN114872598B CN202210610616.5A CN202210610616A CN114872598B CN 114872598 B CN114872598 B CN 114872598B CN 202210610616 A CN202210610616 A CN 202210610616A CN 114872598 B CN114872598 B CN 114872598B
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- Prior art keywords
- fan
- spring frame
- ventilation
- seat
- bracket
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- 238000009423 ventilation Methods 0.000 title claims abstract description 93
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 239000006260 foam Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 8
- 230000005489 elastic deformation Effects 0.000 abstract description 6
- 210000000078 claw Anatomy 0.000 description 16
- 238000005187 foaming Methods 0.000 description 13
- 238000013016 damping Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 241000191291 Abies alba Species 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001217 buttock Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/56—Heating or ventilating devices
- B60N2/5607—Heating or ventilating devices characterised by convection
- B60N2/5621—Heating or ventilating devices characterised by convection by air
- B60N2/5642—Heating or ventilating devices characterised by convection by air with circulation of air through a layer inside the seat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/56—Heating or ventilating devices
- B60N2/5607—Heating or ventilating devices characterised by convection
- B60N2/5621—Heating or ventilating devices characterised by convection by air
- B60N2/5657—Heating or ventilating devices characterised by convection by air blown towards the seat surface
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chair Legs, Seat Parts, And Backrests (AREA)
Abstract
The invention discloses a seat ventilation system, which comprises a ventilation structure, a spring frame, a fan and a fan, wherein the fan is communicated with the ventilation structure and blows or sucks air towards the ventilation structure; the fan includes at least a first position and a second position: when the spring frame is in an off-seat initial state, the fan is positioned at the first position; when the spring frame is in a seating deformation state, the fan mounting part drives the fan to move to the second position relative to the spring frame. The invention also discloses a seat. According to the invention, the fan is movably connected with the spring frame through the fan mounting part, and when the spring frame is in a seating deformation state, the fan mounting part drives the fan to move relative to the spring frame. The influence on the normal elastic deformation of the spring frame is avoided, and the riding comfort is improved.
Description
Technical Field
The invention relates to the technical field of vehicle seats, in particular to a seat ventilation system and a seat.
Background
The driver and the passenger are easy to cause stuffy discomfort after riding the vehicle for a long time. Some existing vehicle seats have fans mounted thereon for increasing the ventilation performance of the seat. Several common fan mounting methods are:
first, the fan is hung on the spring frame through the support, and the fan is connected with the ventilation system through the tuber pipe, and the mode of hanging is hard connection structure. The spring frame can be prevented from elastic deformation, riding comfort is affected, the mounting structure is complex, and the cost is high.
Second, in the fan-embedded foam, the fan-embedded foam may hinder the foam from deforming, and even cause a foreign body sensation, affecting riding comfort.
And thirdly, the fan is arranged on the seat framework through a metal bracket, and the fan is connected with the ventilation system through an air pipe. The metal bracket is attached to the backbone by a screw lock, and the fan is attached to the metal bracket by a screw lock. The installation structure is complex and has high cost.
Therefore, there is a need for a seat ventilation system and seat that improves seat comfort and reduces cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a seat ventilation system and a seat, which improve the comfort of the seat and reduce the cost.
The technical scheme of the invention provides a seat ventilation system, which comprises a ventilation structure, a spring frame, a fan and a fan, wherein the fan is communicated with the ventilation structure and blows or sucks air towards the ventilation structure;
The fan includes at least a first position and a second position:
When the spring frame is in an off-seat initial state, the fan is positioned at the first position;
When the spring frame is in a seating deformation state, the fan mounting part drives the fan to move to the second position relative to the spring frame.
Further, the fan installation part is a bracket, and the bracket is movably connected with the spring frame.
Further, the support includes support body, fixed mounting spare and movable mounting spare, the fan with support body fixed connection, fixed mounting spare with movable mounting spare sets up on the support body, fixed mounting spare with spring frame fixed connection, movable mounting spare with can the relative slip after the spring frame is connected.
Further, the fixed mounting piece is a fixed column, the movable mounting piece is a movable column, the fixed column is fixedly connected with the spring frame, and the movable column can slide relative to the spring frame after being connected with the spring frame.
Further, the fixed mounting piece is a fixed claw, the movable mounting piece is a sliding claw, the fixed claw is perpendicular to the sliding claw, the fixed claw is fixedly connected with the spring frame, and the sliding claw is slidably connected with the spring frame.
Further, the fan mounting part comprises a fixed mounting part and a movable mounting part, one end of the fixed mounting part and one end of the movable mounting part are directly connected with the fan, the fixed mounting part is fixedly connected with the spring frame, and the movable mounting part is movably connected with the spring frame.
Further, the fan installation part comprises a support body and a support hook, the support body is fixedly connected with the fan, one end of the support hook is rotatably connected with the spring frame, and the other end of the support hook is rotatably connected with the support body.
Further, the fan installation part comprises a support body and a sliding pipe sleeve, the support body is fixedly connected with the fan, the sliding pipe sleeve is matched with a steel wire forming hole shaft of the spring frame, and the sliding pipe sleeve is further connected with the support body in a sliding mode.
Further, the ventilation structure comprises a ventilation bag or a foaming air duct, the ventilation structure at the backrest position is shaped like a door, and the ventilation structure at the cushion position is shaped like a Chinese character 'yi' or a Chinese character 'ji'.
The invention also provides a seat, which comprises a backrest and a cushion, and further comprises any one of the seat ventilation systems, wherein the two sets of seat ventilation systems are respectively arranged in the backrest and the cushion.
After the technical scheme is adopted, the method has the following beneficial effects:
according to the invention, the fan is movably connected with the spring frame through the fan mounting part, and when the spring frame is in a seating deformation state, the fan mounting part drives the fan to move relative to the spring frame. The influence on the normal elastic deformation of the spring frame is avoided, and the riding comfort is improved.
Drawings
The present disclosure will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present invention. In the figure:
FIG. 1 is an exploded view of a seat in an embodiment of the invention;
FIG. 2 is a schematic view of a fan mounting portion and a fan according to a first embodiment of the present invention;
FIG. 3 is a schematic view of a fan mounting portion according to an embodiment of the present invention;
FIG. 4 is a schematic view of a fan, fan mount and spring mount according to a first embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of a fan mounting portion and a spring mount in accordance with an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of a fan mount and spring mount in accordance with the second embodiment of the present invention;
fig. 7 is a partial enlarged view of a fixed jaw and a sliding jaw in a second embodiment of the invention;
FIG. 8 is an enlarged view of a portion of a sliding jaw in accordance with a second embodiment of the present invention;
FIG. 9 is a schematic view of a spring frame before and after deformation in accordance with a second embodiment of the present invention;
FIG. 10 is a schematic view of a fan mounting portion and a fan in accordance with a third embodiment of the present invention;
FIG. 11 is a schematic view of a fan mounting portion in a fourth embodiment of the present invention;
FIG. 12 is a schematic view of a fan mounting section in a fifth embodiment of the present invention;
fig. 13 is a vibration model of a seat in an embodiment of the invention.
Reference numeral control table:
A ventilation structure 1;
Spring rack 2: a fixing hole 21 and an elliptical hole 22;
A fan 3;
Fan mounting portion 4: the support body 41, fixed column 42, movable column 43, spacer 44, plug 45, spout 411, trip 451, draw-in groove 452, ventilation grid 46, fixed jack catch 47, slip jack catch 48, dog post 49, support couple 50, ventilation duct 51, slip pipe box 52.
Detailed Description
Specific embodiments of the present invention will be further described below with reference to the accompanying drawings.
It is to be readily understood that, according to the technical solutions of the present invention, those skilled in the art may replace various structural modes and implementation modes with each other without changing the true spirit of the present invention. Accordingly, the following detailed description and drawings are merely illustrative of the invention and are not intended to be exhaustive or to limit the invention to the precise form disclosed.
Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to different positions and different use states thereof. These and other directional terms should not be construed as limiting terms.
In some embodiments of the present invention, as shown in fig. 1, a seat ventilation system includes a ventilation structure 1, a spring frame 2, and a fan 3, wherein the fan 3 is communicated with the ventilation structure 1 and blows or sucks air toward the ventilation structure 1, and further includes a fan mounting portion 4, and the fan 3 is connected with the spring frame 2 through the fan mounting portion 4;
the fan 3 comprises at least a first position and a second position:
when the spring frame 2 is in an off-seat initial state, the fan 3 is positioned at a first position;
When the spring frame 2 is in a seating deformation state, the fan mounting part 4 drives the fan to move to a second position relative to the spring frame 2.
Fig. 1 is an exploded view of a seat ventilation system mounted to a seat. The seat ventilation system is provided with two groups which are respectively arranged in the seat cushion and the backrest to realize ventilation and heat dissipation of the seat cushion and the backrest.
Specifically, the ventilation structure 1 is arranged above or at the front side of the spring frame 2, the fan installation part 4 is connected above or below or at the front side or at the rear side of the spring frame 2, the fan 3 is connected below or at the rear side of the spring frame 2 through the fan installation part 4, the air outlet of the fan 3 faces the ventilation structure 1 and can blow air into the ventilation structure 1, and the ventilation structure 1 disperses the air into a foaming layer of a cushion or a backrest to realize ventilation and heat dissipation of the seat.
The spring frame 2 has certain elastic deformation capability, when a human body sits on the seat, the buttocks press the spring frame 2 in the seat cushion downwards, and the back presses the spring frame 2 in the backrest backwards, so that the spring frame 2 generates certain elastic deformation, and the comfort of the seat is improved.
Since the fan 3 is movably connected with the spring frame 2 through the fan mounting portion 4, when the spring frame 2 is in a seating deformation state, the fan mounting portion 4 drives the fan 3 to move relative to the spring frame 2. The influence on the normal elastic deformation of the spring frame 2 is not caused, and the riding comfort is improved.
Embodiment one:
Fig. 2-5 are schematic views of a first embodiment of the present invention.
In the first embodiment, the fan mounting portion 4 is a bracket, and the bracket is movably connected with the spring frame 2. The support includes support body 41, fixed mounting spare and movable mounting spare, fan 3 and support body 41 fixed connection, and fixed mounting spare and movable mounting spare set up on support body 41, and fixed mounting spare and spring frame 2 fixed connection, movable mounting spare can the relative slip after being connected with spring frame 2.
Specifically, as shown in fig. 3, the fixed mounting member is a fixed column 42, the movable mounting member is a movable column 43, the fixed column 42 and the movable column 43 are located on the same straight line L, the fixed column 42 is fixedly connected with the spring frame 2, and the movable column 43 is connected with the spring frame 2 and then slides along the direction of the straight line L relative to the spring frame 2.
The bracket body 41 is of a flat plate structure, the center of the bracket body 41 is provided with a ventilation grille 46, and the ventilation grille 46 corresponds to the air outlet of the fan 3. Rectangular connectors 45 extend from the periphery of the ventilation grille 46, and the connectors 45 can be connected with the fan 3 in an inserting manner, so that the fan 3 is fixedly connected with the fan. The plug connector 45 comprises a clamping hook 451 and a clamping groove 452, the fan 3 is provided with a corresponding clamping groove and a clamping hook, the clamping hook 451 is clamped with the clamping groove on the fan 3, and the clamping groove 452 is clamped with the clamping hook on the fan 3.
The fixed and movable posts 42 and 43 are disposed on opposite sides of the bracket body 41 and on the same straight line L. As shown in fig. 5, the spring frame 2 is provided with a fixing hole 21 and an elliptical hole 22. The fixing post 42 may be a christmas tree buckle, and is in interference fit with the fixing hole 21; the movable post 43 is in clearance fit with the elliptical aperture 22. The movable column 43 is a smooth-surfaced column, and after the movable column 43 is inserted into the elliptical hole 22, the movable column 43 cannot be separated from the elliptical hole 22, but the movable column 43 can slide along the long axis of the elliptical hole 22.
Preferably, as shown in fig. 3, a positioning piece 44 extends from the bracket body 41, and the positioning piece 44 extends toward the direction of the spring frame 2 and abuts against one section of steel wire of the spring frame 2, so as to provide a fan harness clamping point.
When the passenger is not seated, the movable column 43 abuts against one end of the elliptical hole 22 and has no stress on the spring frame 2; after the passenger sits, the distance between the elliptical hole 22 and the fixed hole 21 on the spring frame 2 is increased under the action of gravity, the movable column 43 can freely slide along the long axis of the elliptical hole 22, and the spring frame 2 is not stressed, so that the support is always unstressed to the spring frame 2, and the spring frame 2 is not influenced by the fan 3 when elastically deformed, so that the comfort of the seat is improved.
As shown in fig. 5, when the passenger is not seated, the distance between the elliptical hole 22 and the fixed hole 21 is L1; after the passenger sits, the distance between the elliptical hole 22 and the fixed hole 21 is L2; there is a spring frame deformation amount deltal=l2-L1. To absorb the amount of spring frame deflection, the major axis length R of the elliptical aperture 22 is equal to or greater than ΔL.
Alternatively, the direction of the straight line L may be arranged in the left-right direction of the seat, or in the front-rear direction.
Alternatively, the fixed post 42 and the movable post 43 are not limited to being on the same straight line, but may be arranged in other ways. For example: the movable columns 43 are plural, and the plural movable columns 43 are distributed in different orientations with respect to the fixed columns 42.
Alternatively, the oval hole 22 may be replaced with an elongated hole, and the movable post 43 is in clearance fit with the elongated hole and is capable of sliding along the length of the hole.
Preferably, the seat ventilation system in the first embodiment is provided in a seat cushion of a seat.
Preferably, the bracket is connected with the ventilation structure 1 without a wind pipe, but adopts an extrusion contact type connection structure; and paste the round sponge layer in the opening part that support and ventilation structure 1 are connected, the sponge layer can paste on the support, also can paste on ventilation structure for reduce the amount of wind leakage loss. When the seat is used for ventilation after a passenger sits, the bracket and the spring frame are extruded, so that the seat can be directly extruded, contacted and connected without air pipe connection, and the adhered sponge layer can reduce air quantity leakage loss.
Embodiment two:
in the second embodiment, as shown in fig. 6 to 9, the fan mounting portion 4 is also a bracket, and the bracket is movably connected to the spring frame 2. The support includes support body 41, fixed mounting spare and movable mounting spare, fan 3 and support body 41 fixed connection, and fixed mounting spare and movable mounting spare set up on support body 41, and fixed mounting spare and spring frame 2 fixed connection, movable mounting spare can the relative slip after being connected with spring frame 2.
Specifically, as shown in fig. 6, the fixed mounting member is a fixed claw 47, the movable mounting member is a sliding claw 48, the fixed claw 47 and the sliding claw 48 are mutually perpendicular, steel wires of the spring frame 2 matched with the fixed claw 47 and the sliding claw 48 are mutually perpendicular, the fixed claw 47 is fixedly connected with the spring frame 2, and the sliding claw 48 is slidably connected with the spring frame 2.
In this embodiment, as shown in fig. 6, one fixed jaw 47 is provided, and four sliding jaws 48 are provided, two of which 48 are located on one wire above and the other two of which 48 are located on one wire below.
As shown in fig. 7, the through hole of the fixing claw 47 is in shaft fit with the steel wire of the spring frame 2, and interference fit is formed between the through hole and the steel wire. The lower sliding jaw 48 is lapped on the steel wire of the spring frame 2 and can slide along the steel wire.
As shown in fig. 8, the upper slide jaw 48 is also overlapped on the wire of the spring frame 2 so as to slide along the wire. The sliding direction of the sliding pawls 48 of the upper row and the sliding direction of the sliding pawls 48 of the lower row are parallel to each other.
The fixed jaw 47 and the sliding jaw 48 are restricted in the degrees of freedom in two perpendicular directions and do not fall off. When a passenger sits, the spring frame 2 is stressed to deform, the sliding claw 48 drives the bracket body 41 to freely slide along the steel wire of the spring frame 2, and the whole bracket has no stress on the spring frame.
As shown in fig. 9, the initial length of the spring frame 2 is L1; after the passenger sits, the deformation distance of the spring frame 2 is S, the steel wire length of the spring frame 2 is L2,The sliding distance of the bracket is (L2-L1) 1/2. In order to absorb the deformation of the spring frame 2, the sliding jaw 22 needs to slide freely, i.e. not interfere with the spring frame 2, so the minimum distance between the sliding jaw 22 and the nearest steel wire inflection point of the spring frame 2 is/>
Preferably, the seat ventilation system in the second embodiment is provided in the backrest of the seat.
Embodiment III:
as shown in fig. 10, the fan mounting portion 4 includes a fixed mounting member and a movable mounting member, one ends of the fixed mounting member and the movable mounting member are directly connected with the fan 3, the fixed mounting member is fixedly connected with the spring frame 2, and the movable mounting member is movably connected with the spring frame 2.
Specifically, the fixed mounting piece is a fixed column 42, the movable mounting piece is a stop block column 49, the fixed column 42 is a Christmas tree buckle, and the fixed column and the mounting hole of the spring frame 2 form interference fit. The other stop post 49 is a smooth cylinder with a stop at the tail end and forms clearance fit with the mounting hole of the spring frame 2; the stop block is rectangular, can be embedded into the mounting hole, and can prevent the mounting column from falling off after rotating by 90 degrees. The plastic member of the spring bracket 2 has two corresponding mounting holes, one of which is a circular hole for interference fit with the fixed post 42 and the other of which is an elliptical hole for clearance fit with the stopper post 49.
When assembling, the stop block column 49 is firstly arranged in the elliptical hole of the spring frame 2 and rotated for 90 degrees to prevent the spring frame from falling off; and then the fixing posts 42 with christmas tree buckles are installed.
When the passenger is not seated, the stop post 49 abuts against one end of the elliptical hole and has no stress on the spring frame 2; after a passenger sits, the distance between the elliptical hole and the circular hole on the spring frame 2 is increased under the action of gravity, and the stop block column 49 can freely slide in the elliptical hole without stress on the spring frame 2.
Preferably, when the passenger is not seated, the distance between the elliptical hole and the circular hole of the spring frame 2 is L1; after the passenger sits, the distance between the elliptical hole and the circular hole of the spring frame 2 is L2; there is a spring frame deformation amount deltal=l2-L1. In order to absorb the deformation of the spring frame, the length R of the long axis of the elliptical hole of the spring frame is more than or equal to DeltaL.
Embodiment four:
as shown in fig. 11, the fan mounting portion 4 includes a bracket body 41 and a bracket hook 50, the bracket body 41 is fixedly connected with the fan 3, one end of the bracket hook 50 is rotatably connected with the spring frame 2, and the other end of the bracket hook 50 is rotatably connected with the bracket body 41.
Specifically, the support body 41 still is equipped with air pipe 51 towards the one side of ventilation structure 1, and support couple 50 has two, sets up respectively in the opposite both sides of support body 41, and two support couples 50 hang respectively on the steel wire of spring frame 2, realize fan installation department 4 and the connection of spring frame 2, because the distance between support body 41 and ventilation structure 1 is great, consequently increased air pipe 51 and be used for being connected with ventilation structure 1.
As the bracket hook 50 is rotatable about the rotation axis. When a passenger sits, the steel wires of the spring frame 2 are stressed to open, the bracket hooks 50 are opened along with the steel wires, the overlap joint amount of the ventilating duct 51 and the ventilating holes on the ventilating structure 1 is increased, and the ventilation air tightness is improved. When the passenger leaves the seat, the steel wire of the spring frame 2 is retracted, the bracket hook 50 is retracted along with the steel wire, the lap joint amount of the ventilating duct 51 and the ventilating holes on the ventilating structure 1 is reduced, and ventilation is not needed at the moment, so that the ventilation performance is not influenced.
Fifth embodiment:
as shown in fig. 12, the fan mounting portion 4 includes a bracket body 41 and a slide shroud 52, the bracket body 41 is fixedly connected with the fan 3, the slide shroud 52 is engaged with a wire forming hole shaft of the spring frame 2, and the slide shroud 52 is also slidably connected with the bracket body 41.
Specifically, two sliding sleeves 52 are respectively disposed on two opposite sides of the bracket body 41. Two sliding grooves 411 are formed in the bracket body 41, and the sliding pipeline 52 can slide in the sliding grooves 411 along the length direction of the bracket body 41.
When a passenger sits, the wire of the spring frame 2 is forced to open, and the distance between the two sliding tube sleeves 52 increases. When the passenger leaves the seat, the wire of the spring frame 2 is retracted, and the distance between the two sliding sleeves 52 is reduced.
Preferably, a spring is provided in the chute 411, and the spring can be used as an auxiliary return structure.
Example six:
As shown in fig. 1, the seat includes a backrest and a seat cushion, and further includes the seat ventilation system in any of the above embodiments, and two sets of seat ventilation systems are provided in the backrest and the seat cushion, respectively.
Specifically, as shown in fig. 1, the backrest and the cushion each include a heating layer 5, a soft foaming layer 6 and a hard foaming layer 7, and ventilation holes are formed in the heating layer 5, the soft foaming layer 6 and the hard foaming layer 7, and the ventilation holes in the respective layers are correspondingly formed.
Since the heating layer 5, the soft foaming layer 6, the hard foaming layer 7 and the ventilation structure 1 are a multi-layered stacked structure, each layer structure needs to be provided with ventilation holes to guide the air flow. If the size of each layer of ventilation holes is too small, the ventilation holes are easily staggered to shield the air duct during assembly, and the ventilation performance is affected; if the size is too large, it is easy to limit the heating area/foaming effective support area, affecting comfort performance. Therefore, it is necessary to design the dimensional matching relationship of the vent holes of each layer.
Wherein D1> D2> D3, D4> D3;
Preferably, the ventilation structure 1 comprises a backrest ventilation structure and a cushion ventilation structure, wherein the backrest ventilation structure is in a shape like a Chinese character 'men', and the cushion ventilation structure is in a shape like a Chinese character 'yi' or a Chinese character 'ji'.
Because the seat ventilation system of cushion adopts ventilation structure air guide, because ventilation structure is hard relatively to the foaming, influence riding travelling comfort. The cushion ventilation structure adopts a straight-line/I-shaped structure, avoids thigh areas of passengers, and improves riding comfort. An air duct is arranged on the hard foaming layer 7, and the air flow of the ventilation structure 1 is guided into the ventilation holes on two sides of the hard foaming layer 7. The backrest ventilation structure adopts a door-shaped structure, so that the spine region of passengers is avoided, and the riding comfort is improved.
Preferably, as shown in fig. 13, the seat vibrates during the running process of the whole vehicle, and can be equivalently a vibration model for receiving the vibration excitation input of the floor of the vehicle body. And has the following vibration parameter definitions:
m: cushion load weight (Kg)
K rigid foam layer and spring frame rigidity (N/mm)
Damping of hard foam layer (Ns/m)
X seat resonance amplitude (mm)
Y vehicle floor resonance amplitude (mm)
And xi, damping ratio, which is obtained by logarithmic damping ratio.
Delta: logarithmic damping ratio-measured by seat free vibration experiments.
According to the vibration theory, the amplitude ratio is:
the hard foaming layer 7 is provided with through hole grooves and other structures for matching ventilation, so that the complete supporting structure is damaged, and the comfort is affected. To improve dynamic comfort, it is desirable to reduce the amplitude ratio, i.e., increase the logarithmic damping ratio δ.
The smaller the hardness of the hard foam layer 7 is, the larger the logarithmic damping ratio thereof is; the logarithmic damping ratio can be increased by reducing the hardness of the hard foam layer 7, thereby improving dynamic comfort.
What has been described above is merely illustrative of the principles and preferred embodiments of the present invention. It should be noted that several other variants are possible to those skilled in the art on the basis of the principle of the invention and should also be considered as the scope of protection of the present invention.
Claims (3)
1. The seat ventilation system comprises a ventilation structure, a spring frame and a fan, wherein the fan is communicated with the ventilation structure and blows or sucks air towards the ventilation structure;
The fan mounting part comprises a bracket body and bracket hooks, wherein the bracket body is fixedly connected with the fan, one side of the bracket body, which faces the ventilation structure, is also provided with ventilation pipelines, two bracket hooks are respectively arranged on two opposite sides of the bracket body, one end of each bracket hook is rotatably connected with the spring frame, and the other end of each bracket hook is rotatably connected with the bracket body;
The fan includes at least a first position and a second position:
When the spring frame is in an initial state of leaving the seat, the fan is positioned at the first position, the steel wires of the spring frame retract, the two bracket hooks retract along with the steel wires, and the overlap joint amount of the ventilation pipeline and the ventilation holes of the ventilation structure is reduced;
When the spring frame is in a sitting deformation state, the fan installation part drives the fan to move to the second position relative to the spring frame, steel wires of the spring frame are stressed to be opened, the two bracket hooks are opened along with the spring frame, and the lap joint amount of the ventilation pipeline and the ventilation holes on the ventilation structure is increased.
2. The seat ventilation system of claim 1, wherein the ventilation structure comprises a ventilation bag or a foam air duct, the ventilation structure at the backrest position is a door-shaped, and the ventilation structure at the seat cushion position is a straight or a zigzag shaped.
3. A seat comprising a back rest and a seat cushion, further comprising a seat ventilation system according to any one of claims 1-2, two sets of said seat ventilation systems being provided in said back rest and said seat cushion, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210610616.5A CN114872598B (en) | 2022-05-31 | 2022-05-31 | Seat ventilation system and seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210610616.5A CN114872598B (en) | 2022-05-31 | 2022-05-31 | Seat ventilation system and seat |
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| Publication Number | Publication Date |
|---|---|
| CN114872598A CN114872598A (en) | 2022-08-09 |
| CN114872598B true CN114872598B (en) | 2024-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210610616.5A Active CN114872598B (en) | 2022-05-31 | 2022-05-31 | Seat ventilation system and seat |
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| CN114872598A (en) | 2022-08-09 |
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