WO2022250296A1 - Seat back cover assembly designed with integrated dual fan-type air purification device - Google Patents
Seat back cover assembly designed with integrated dual fan-type air purification device Download PDFInfo
- Publication number
- WO2022250296A1 WO2022250296A1 PCT/KR2022/005629 KR2022005629W WO2022250296A1 WO 2022250296 A1 WO2022250296 A1 WO 2022250296A1 KR 2022005629 W KR2022005629 W KR 2022005629W WO 2022250296 A1 WO2022250296 A1 WO 2022250296A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seat back
- back cover
- filter
- air
- cover assembly
- Prior art date
Links
- 238000004887 air purification Methods 0.000 title abstract description 6
- 230000009977 dual effect Effects 0.000 title description 4
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
- B60H3/06—Filtering
- B60H3/0658—Filter elements specially adapted for their arrangement in vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
- B60H3/06—Filtering
-
- 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
- B60N2/64—Back-rests or cushions
-
- 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
- B60N2/90—Details or parts not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
Definitions
- the present invention relates to a seat back cover assembly, and more particularly, to a seat back cover assembly in which a dual fan type air purifier is integrated.
- One of the technologies for purifying indoor air in a vehicle is to install an air purifier in a built-in type at a specific location inside the vehicle.
- Places conventionally considered for installation of a built-in type air purifier include an armrest, a rear shelf, a ceiling, and the like.
- the present invention was derived to solve the above-mentioned problems of the prior art, so that the filter replacement work as well as the repair work of the air purifier can be easily performed while minimizing the additional process and cost accompanying the introduction of the air purifier, It is intended to provide a way to increase the efficiency of air purification by increasing the efficiency of space and applying a dual fan.
- the seat back cover 110 and an air purifying device 120 provided as a built-in type in the seat back cover 110; a seat back cover assembly with an integrated air purifying device is provided.
- a plurality of air inlets 112a, 112b, 112c, a plurality of air outlets 113, and a seatback pocket mounting groove 114 are formed in the seatback cover 110, and the seatback mounting groove 114 )
- the plurality of air inlets (112a, 112b, 112c) may be formed along the inner wall.
- the seat back cover 110 is provided with a filter case 115 located inside the seat back pocket 116, and the inner surface 115a of the filter case 115 has ribs that increase toward the bottom. 115b is formed so that a gap space G can be secured between the inner surface 115a of the filter case 115 and the filter 140 mounted on the filter case 115.
- the seat back cover 110 is provided with a filter case 115 located inside the seat back pocket 116
- the air purifier 120 includes a pair of fan modules 131 and 132, a filter 140, a guide duct 150 and an inner cover 160
- the pair of fan modules 131 and 132 are connected to the inner cover 160
- the guide duct 150 is the filter
- a filter case cover part 151 covering the case 115 and a pair of branch duct parts 153 and 154 connecting the filter case cover part 151 and the pair of fan modules 131 and 132 can include
- the air purifier is provided as a built-in type in the seat back cover assembly coupled to the vehicle seat, the installation of the air purifier to the vehicle seat proceeds simultaneously in the process of mounting the seat back cover assembly to the vehicle seat. Therefore, the process of installing an air purifier in a vehicle is very simple. In addition, the additional cost of introducing an air purifier is also minimized.
- the filter case is hidden inside the seat back pocket, so the appearance of the seat is not damaged by the filter case.
- the air inlets are formed on the inner wall of the seat back pocket mounting groove, it is not visible from the outside, so the aesthetics of the seat seat are also desirable.
- the filter case is hinged to the seat back cover so that it can be opened and closed, the user can open the filter case and easily replace the filter.
- the air purifier of the seat back cover assembly is a configuration that forms a flow path between the air inlet and the air outlet, and since only the inner cover and mounting module are required, the structure of the air purifier is very simple and its assembly process is also very simple. do.
- the air purifier of the seat back cover assembly is a configuration that forms a flow path between the air inlet and the air outlet, and requires only an inner cover and a guide duct, so the structure of the air purifier is very simple and the assembly process is also very simple.
- FIG. 1 is a view showing a seat back cover assembly 100 according to an embodiment of the present invention.
- FIGS. 2 to 4 are views showing the air inlets 112a, 112b, 112c and the filter case 115 of the seat back cover assembly 100.
- FIG 5 is a view showing the inside of the seat back cover assembly 100.
- FIG. 6 is a view showing a portion of FIG. 5 from another angle.
- FIG. 7 is a view showing the seat back cover assembly 100 with the guide duct 150 and the fan modules 131 and 132 separated.
- FIG. 8 is a view showing the state before and after mounting the fan modules (131, 132).
- 9 is a view showing the guide duct 150.
- FIG. 1 is a view showing a seat back cover assembly 100 according to an embodiment of the present invention.
- the seat back cover assembly 100 is a component coupled to the rear side of the backrest of a seat for a vehicle.
- the seat back cover assembly 100 is provided with a built-in air purifier 120 (see FIG. 5).
- a built-in air purifier 120 see FIG. 5
- air purifier 120 When the air purifier 120 is operated, air inside the vehicle is introduced into the seat, purified by the internal air purifier 120, and then discharged out of the seat. Through this process, the air inside the vehicle is cleanly purified.
- the seat back cover assembly 100 includes a seat back cover 110 and a seat back pocket 116 provided on the lower part of the rear surface thereof.
- the seat back pocket 116 is a type having a mesh of elastic material.
- a plurality of air outlets 113 are formed at the upper end of the seat back cover 110 .
- FIGS. 2 to 4 are views showing the filter case 115 and the air inlets 112a, 112b, and 112c of the seat back cover assembly 100.
- the seat back cover 110 includes a filter case 115 located inside the seat back pocket 116 .
- the filter case 115 is pivotally hinged to the seat back cover 110, so that the user can conveniently open the filter case 115 to replace the filter.
- the filter case 115 is disposed to be covered by the seat back pocket 116, so that the aesthetic appearance of the seat is not impaired.
- a seat back pocket mounting groove 114 is formed in a substantially U shape on the outer surface of the seat back cover 110 .
- a plurality of air inlets 112a, 112b, and 112c are formed along the inner wall of the seatback pocket mounting groove 114. Since the plurality of air inlets 112a, 112b, and 112c are formed at these positions, they are hidden by the seatback pocket 116 and are difficult to see. Therefore, there is no deterioration in the aesthetics of the visual exposure of the air inlets 112a, 112b, and 112c.
- a rib 115b is formed on the inner surface 115a of the filter case 115 and increases toward the lower end.
- a gap space (G) exists between the inner surface (115a) of the filter case (115) and the filter (140) in a state where the filter (140) is mounted on the filter case (115). This is secured Air introduced into the seat through the air inlets 112a, 112b, and 112c may flow toward the filter 140 through the interstitial space G.
- FIG. 5 is a view showing the inside of the seat back cover assembly 100
- FIG. 6 is a view showing a portion of FIG. 5 from another angle.
- the seat back cover assembly 100 includes an air purifier 120 provided as a built-in type on the inner surface of the seat back cover 110 .
- the air purifier 120 includes a plurality of fan modules 131 and 132, a filter 140, a guide duct 150, an inner cover 160, and a control module 170.
- the vehicle interior air introduced into the seat through the air inlets 112a, 112b, and 112c forms the aforementioned interstitial space G (see FIG. 4 ).
- the filter 140 flows into one side of the filter 140, and after passing through the filter 140, it branches through the guide duct 150 and passes through the plurality of fan modules 131 and 132 and the inner space of the inner cover 160. It is discharged out of the seat through the air outlet 113.
- the guide duct 150 covers the filter case 115, the aforementioned interstitial space G is not covered and remains exposed, so that the filter 140 through the interstitial space G Air inflow to one side is allowed.
- the plurality of fan modules 131 and 132 provide a suction force when the air purifier 120 is operated, and the air inside the vehicle can be circulated in and out of the vehicle seat by the suction force.
- the air purifier 120 may include two fan modules 131 and 132, and the two fan modules 131 and 132 are controlled by a control module 170. It may be disposed one by one on the left and right sides of.
- the filter 140 serves to purify air inside the vehicle.
- the air purifier 120 When the air purifier 120 is operating, the vehicle interior air that has flowed into the vehicle seat passes through the filter 140 and is discharged out of the vehicle seat. In the process of passing through the filter 140, foreign substances such as dust are filtered out so that the inflow air is clean. It is purified.
- the guide duct 150 is a member that forms a flow path between the filter 140 and the plurality of fan modules 131 and 132, and the air passing through the filter 140 is guided through the guide duct 150 to a plurality of fans. It branches into modules 131 and 132.
- the inner cover 160 is coupled to the upper part of the inner surface of the seat back cover 110 and serves to guide the air discharged from the fan modules 131 and 132 to the air outlet 113.
- the control module 170 supplies electricity to the fan modules 131 and 132 and controls the operation of the fan modules 131 and 132 .
- FIG. 7 is a view showing the seat back cover assembly 100 in a state in which the guide duct 150 and the fan modules 131 and 132 are separated
- FIG. 8 is a view showing the before and after mounting of the fan modules 131 and 132. .
- the inner cover 160 is coupled to the upper end of the inner surface of the seat back cover 110 and has a plurality of fan module connectors 161 and 162 .
- the fan modules 131 and 132 are connected to each of the fan module connectors 161 and 162 one by one.
- the air introduced into the fan modules 131 and 132 is introduced into the inner space of the inner cover 160 through the fan module connectors 161 and 162 and is then discharged out of the vehicle seat through the air outlet 113 .
- 9 is a view showing the guide duct 150.
- the guide duct 150 includes a filter case cover part 151 and a pair of branch duct parts 153 and 154.
- the filter case cover part 151 is a part that covers the filter case 115 described above.
- the pair of branch duct parts 153 and 154 connect the filter case 115 and the plurality of fan modules 131 and 132, and the first branch duct part 153 is connected to the first fan module 131. and the second branch duct unit 154 is connected to the second fan module 132.
- Each of the branch duct parts 153 and 154 is provided with flange parts 153a and 154b at their outer ends.
- the flange portions 153a and 154b are disposed in close contact with the upper surfaces of the fan modules 131 and 132 and are coupled to the fans 131 and 132 by screws.
- a flow path between the filter 140 and the fan modules 131 and 132 is formed only with the guide duct 150 having this structure, and the air passing through the filter 140 leaks through the flow path partitioned by the guide duct 150. flow to the fan modules 131 and 132 without
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The present invention relates to a seat back cover assembly comprising: a seat back cover (110); and an air purification device (120) built into the seat back cover (110). Since the seat back cover assembly is designed with the integrated air purification device, additional processes and costs associated with incorporating an air purification device can be minimized.
Description
본 발명은 시트백커버어셈블리에 관한 것으로서, 보다 구체적으로는, 듀얼팬 방식의 공기정화장치가 통합 설계된 시트백커버어셈블리에 관한 것이다.The present invention relates to a seat back cover assembly, and more particularly, to a seat back cover assembly in which a dual fan type air purifier is integrated.
최근 들어 차량실내공기를 정화시키기 위한 기술에 대한 관심이 높아지고 있다.In recent years, interest in technologies for purifying vehicle interior air has increased.
차량실내공기 정화를 위한 기술 중 하나는 차량 내부의 특정 장소에 공기정화장치를 빌트인 타입으로 설치하는 것이다.One of the technologies for purifying indoor air in a vehicle is to install an air purifier in a built-in type at a specific location inside the vehicle.
종래에 빌트인 타입의 공기정화장치의 설치를 위해 고려되는 장소로는 암레스트, 리어셀프, 천정부 등이 대표적이다.Places conventionally considered for installation of a built-in type air purifier include an armrest, a rear shelf, a ceiling, and the like.
하지만, 이러한 설치 장소들은 공기정화장치를 도입함에 있어서 비교적 많은 추가 비용이 들고, 차량 본체에 대한 복잡한 설계 변경이 수반되며, 필터 교체 작업이 불편하며, 공간의 제약이 있기 때문에 제한적인 팬과 필터를 사용해야 하는 단점이 있다.However, these installation sites require a relatively high additional cost to introduce air purifiers, involve complex design changes to the vehicle body, inconvenient filter replacement work, and limited fans and filters due to space limitations. There are downsides to using it.
본 발명은 전술한 종래기술의 문제점을 해결하기 위해 도출된 것으로서, 공기정화장치 도입에 따르는 공정 추가 및 비용 추가를 최소화하면서도 필터 교체 작업은 물론 공기정화장치의 수리 작업도 간편하게 수행될 수 있도록 하며, 공간의 효용성을 높여 듀얼팬을 적용함으로써 공기 정화 효율을 높일 수 있는 방안을 제공하고자 한다.The present invention was derived to solve the above-mentioned problems of the prior art, so that the filter replacement work as well as the repair work of the air purifier can be easily performed while minimizing the additional process and cost accompanying the introduction of the air purifier, It is intended to provide a way to increase the efficiency of air purification by increasing the efficiency of space and applying a dual fan.
본 발명에 따르면, 시트백커버(110); 및 상기 시트백커버(110)에 빌트인 타입으로 구비된 공기정화장치(120);를 포함하는 공기정화장치가 통합 설계된 시트백커버어셈블리가 제공된다.According to the present invention, the seat back cover 110; and an air purifying device 120 provided as a built-in type in the seat back cover 110; a seat back cover assembly with an integrated air purifying device is provided.
일 실시예에 따르면, 상기 시트백커버(110)에 복수의 공기유입구(112a, 112b, 112c), 복수의 공기배출구(113) 및 시트백포켓 장착홈(114)이 형성되며, 상기 시트백 장착홈(114)의 내측벽을 따라 상기 복수의 공기유입구(112a, 112b, 112c)가 형성될 수 있다.According to one embodiment, a plurality of air inlets 112a, 112b, 112c, a plurality of air outlets 113, and a seatback pocket mounting groove 114 are formed in the seatback cover 110, and the seatback mounting groove 114 ) The plurality of air inlets (112a, 112b, 112c) may be formed along the inner wall.
일 실시예에 따르면, 상기 시트백커버(110)에는 시트백포켓(116) 안쪽에 위치한 필터케이스(115)가 구비되며, 상기 필터케이스(115)의 내측면(115a)에는 하단으로 갈수록 높아지는 형태의 리브(115b)가 형성되어 상기 필터케이스(115)의 내측면(115a)과 상기 필터케이스(115)에 장착된 필터(140) 사이에 틈새공간(G)이 확보될 수 있다.According to one embodiment, the seat back cover 110 is provided with a filter case 115 located inside the seat back pocket 116, and the inner surface 115a of the filter case 115 has ribs that increase toward the bottom. 115b is formed so that a gap space G can be secured between the inner surface 115a of the filter case 115 and the filter 140 mounted on the filter case 115.
일 실시예에 따르면, 상기 시트백커버(110)에는 시트백포켓(116) 안쪽에 위치한 필터케이스(115)가 구비되며, 상기 공기정화장치(120)는 한 쌍의 팬모듈(131, 132), 필터(140), 가이드덕트(150) 및 내부커버(160)를 포함하며, 상기 내측커버(160)에 상기 한 쌍의 팬모듈(131, 132)이 접속되며, 상기 가이드덕트(150)는 상기 필터케이스(115)를 커버하는 필터케이스 커버부(151) 및 상기 필터케이스 커버부(151)와 상기 한 쌍의 팬모듈(131, 132)을 연결하는 한 쌍의 분기덕트부(153, 154)를 포함할 수 있다.According to one embodiment, the seat back cover 110 is provided with a filter case 115 located inside the seat back pocket 116, and the air purifier 120 includes a pair of fan modules 131 and 132, a filter 140, a guide duct 150 and an inner cover 160, the pair of fan modules 131 and 132 are connected to the inner cover 160, and the guide duct 150 is the filter A filter case cover part 151 covering the case 115 and a pair of branch duct parts 153 and 154 connecting the filter case cover part 151 and the pair of fan modules 131 and 132 can include
본 발명에 따르면 다음과 같은 효과들이 있다.According to the present invention, there are the following effects.
1. 차량용 시트에 빌트인 타입의 공기정화장치가 도입되므로 차량 본체에 대해서는 공기정화장치 도입을 위한 어떠한 설계 변경도 필요하지 않다.1. Since a built-in air purifier is introduced in the vehicle seat, no design change is required for the introduction of the air purifier in the body of the vehicle.
2. 차량용 시트에 결합되는 시트백커버어셈블리에 공기정화장치가 빌트인 타입으로 구비되므로, 차량용 시트에 시트백커버어셈블리를 장착시키는 과정에서 차량용 시트에 대한 공기정화장치의 장착도 동시에 진행된다. 따라서 차량에 공기정화장치를 설치하는 과정이 매우 간단하다. 그리고 공기정화장치 도입에 따르는 비용 추가 역시 최소화된다.2. Since the air purifier is provided as a built-in type in the seat back cover assembly coupled to the vehicle seat, the installation of the air purifier to the vehicle seat proceeds simultaneously in the process of mounting the seat back cover assembly to the vehicle seat. Therefore, the process of installing an air purifier in a vehicle is very simple. In addition, the additional cost of introducing an air purifier is also minimized.
3. 필요 시에 차량용 시트로부터 시트백커버어셈블리를 분리한 후 공기정화장치에 대한 유지보수 작업을 간편하게 수행할 수 있다.3. If necessary, after separating the seat back cover assembly from the vehicle seat, maintenance work on the air purifier can be easily performed.
4. 시트백포켓 안쪽에 필터케이스가 가려지게 배치되어 있어서 필터케이스에 의해 좌석시트의 미관이 해쳐지는 않는다. 또한 공기유입구들이 시트백포켓 장착홈의 내측벽에 형성되어 있어 밖에서 잘 보이지 않으므로 좌석시트의 미관 상 역시 바람직하다.4. The filter case is hidden inside the seat back pocket, so the appearance of the seat is not damaged by the filter case. In addition, since the air inlets are formed on the inner wall of the seat back pocket mounting groove, it is not visible from the outside, so the aesthetics of the seat seat are also desirable.
5. 시트백커버에 필터케이스가 개폐 가능하게 힌지결합되어 있어 사용자는 필터케이스를 열어 손쉽게 필터 교체 작업을 수행할 수 있다.5. Since the filter case is hinged to the seat back cover so that it can be opened and closed, the user can open the filter case and easily replace the filter.
6. 시트백커버어셈블리의 공기정화장치는 공기유입구와 공기배출구 사이의 유로를 형성하는 구성으로서 단지 내부커버 및 장착모듈 만 필요하기 때문에, 공기정화장치의 구조가 매우 심플하고 그것의 조립 과정 또한 매우 간단하다.6. The air purifier of the seat back cover assembly is a configuration that forms a flow path between the air inlet and the air outlet, and since only the inner cover and mounting module are required, the structure of the air purifier is very simple and its assembly process is also very simple. do.
7. 시트백커버어셈블리의 공기정화장치는 공기유입구와 공기배출구 사이의 유로를 형성하는 구성으로서 단지 내부커버 및 가이드덕트 만을 필요로 하므로, 공기정화장치의 구조가 매우 심플하고 조립 과정 또한 매우 간단하다.7. The air purifier of the seat back cover assembly is a configuration that forms a flow path between the air inlet and the air outlet, and requires only an inner cover and a guide duct, so the structure of the air purifier is very simple and the assembly process is also very simple.
8. 조수석 시트 뒷면에 설치되는 시트백커버어셈블리의 구조상 기존보다 레그룸의 거리가 좁아질 수 밖에 없는 구조이다. 이를 고려하여, 시트의 돌출 부위가 최소화되도록 원심형 팬이 적용되었고, 필터와 팬이 직렬이 아닌 병렬로 배치되었기 때문에 일반적인 시트백커버 대비 돌출되는 양을 최소화하였다.8. Due to the structure of the seat back cover assembly installed on the back of the passenger seat, the legroom distance is inevitably narrower than before. Considering this, a centrifugal fan was applied to minimize the protrusion of the seat, and since the filter and the fan were arranged in parallel rather than in series, the protruding amount was minimized compared to the general seat back cover.
도 1은 본 발명의 실시예에 따른 시트백커버어셈블리(100)를 보이는 도면이다.1 is a view showing a seat back cover assembly 100 according to an embodiment of the present invention.
도 2 내지 도 4는 시트백커버어셈블리(100)의 공기유입구(112a, 112b, 112c) 및 필터케이스(115)를 보이는 도면이다.2 to 4 are views showing the air inlets 112a, 112b, 112c and the filter case 115 of the seat back cover assembly 100.
도 5는 시트백커버어셈블리(100)의 내측을 보이는 도면이다.5 is a view showing the inside of the seat back cover assembly 100.
도 6은 도 5의 일부분을 다른 각도에서 보이는 도면이다.6 is a view showing a portion of FIG. 5 from another angle.
도 7은 및 가이드덕트(150) 및 팬모듈(131, 132)이 분리된 상태로 시트백커버어셈블리(100)를 보이는 도면이다.7 is a view showing the seat back cover assembly 100 with the guide duct 150 and the fan modules 131 and 132 separated.
도 8은 팬모듈(131, 132) 장착 전후의 모습을 보이는 도면이다.8 is a view showing the state before and after mounting the fan modules (131, 132).
도 9는 가이드덕트(150)를 보이는 도면이다.9 is a view showing the guide duct 150.
이하에서는 도면에 예시된 실시예들을 참조하여 본 발명에 대해 보다 구체적으로 설명한다.Hereinafter, the present invention will be described in more detail with reference to the embodiments illustrated in the drawings.
도 1은 본 발명의 실시예에 따른 시트백커버어셈블리(100)를 보이는 도면이다.1 is a view showing a seat back cover assembly 100 according to an embodiment of the present invention.
이를 참조하면, 본 발명의 실시예에 따른 시트백커버어셈블리(100)는 차량용 좌석시트의 등받이부의 후면 측에 결합되는 구성품이다.Referring to this, the seat back cover assembly 100 according to the embodiment of the present invention is a component coupled to the rear side of the backrest of a seat for a vehicle.
후술하는 바와 같이, 시트백커버어셈블리(100)에는 빌트인 타입의 공기정화장치(120)(도 5 참조)가 구비된다. 공기정화장치(120)가 가동될 때 차량실내공기는 좌석시트 안으로 유입되어 내부의 공기정화장치(120)의 의해 정화된 후 좌석시트 밖으로 배출되는 방식으로 순환한다. 이러한 과정을 통해 차량실내공기가 깨끗하게 정화된다.As will be described later, the seat back cover assembly 100 is provided with a built-in air purifier 120 (see FIG. 5). When the air purifier 120 is operated, air inside the vehicle is introduced into the seat, purified by the internal air purifier 120, and then discharged out of the seat. Through this process, the air inside the vehicle is cleanly purified.
시트백커버어셈블리(100)는 시트백커버(110) 및 그 후면의 하부에 구비된 시트백포켓(116)을 포함한다. 본 실시예에서 시트백포켓(116)은 탄성소재의 그물망을 구비하는 타입이다.The seat back cover assembly 100 includes a seat back cover 110 and a seat back pocket 116 provided on the lower part of the rear surface thereof. In this embodiment, the seat back pocket 116 is a type having a mesh of elastic material.
시트백커버(110)의 상단부에는 복수의 공기배출구(113)가 형성되어 있다.A plurality of air outlets 113 are formed at the upper end of the seat back cover 110 .
도 2 내지 도 4는 시트백커버어셈블리(100)의 필터케이스(115) 및 공기유입구(112a, 112b, 112c)를 보이는 도면이다.2 to 4 are views showing the filter case 115 and the air inlets 112a, 112b, and 112c of the seat back cover assembly 100.
도 2를 참조하면, 시트백커버(110)에는 시트백포켓(116) 안쪽에 위치한 필터케이스(115)가 구비된다. 도 2에 도시된 바와 같이, 필터케이스(115)는 시트백커버(110)에 회동방식으로 개폐 가능하게 힌지결합되어 있어서, 사용자는 필터케이스(115)를 열어서 필터 교체 작업을 편리하게 수행할 수 있다. 도 1을 참조하면, 필터케이스(115)는 시트백포켓(116)에 의해 가려지게 배치되므로 좌석시트의 미관을 해치지 않는다.Referring to FIG. 2 , the seat back cover 110 includes a filter case 115 located inside the seat back pocket 116 . As shown in FIG. 2, the filter case 115 is pivotally hinged to the seat back cover 110, so that the user can conveniently open the filter case 115 to replace the filter. . Referring to FIG. 1 , the filter case 115 is disposed to be covered by the seat back pocket 116, so that the aesthetic appearance of the seat is not impaired.
도 2 및 도 3을 참조하면, 시트백커버(110)의 외측면에는 대략 U자형으로 시트백포켓 장착홈(114)이 형성되어 있다. 이러한 시트백포켓 장착홈(114)의 내측벽을 따라 복수의 공기유입구(112a, 112b, 112c)가 형성되어 있다. 복수의 공기유입구(112a, 112b, 112c)가 이러한 위치에 형성되어 있기 때문에 시트백포켓(116)에 의해 가려져 잘 보이지 않는다. 따라서 공기유입구(112a, 112b, 112c)의 시각적 노출에 다른 미관 저하가 없다.Referring to FIGS. 2 and 3 , a seat back pocket mounting groove 114 is formed in a substantially U shape on the outer surface of the seat back cover 110 . A plurality of air inlets 112a, 112b, and 112c are formed along the inner wall of the seatback pocket mounting groove 114. Since the plurality of air inlets 112a, 112b, and 112c are formed at these positions, they are hidden by the seatback pocket 116 and are difficult to see. Therefore, there is no deterioration in the aesthetics of the visual exposure of the air inlets 112a, 112b, and 112c.
도 4를 참조하면, 필터케이스(115)의 내측면(115a)에는 하단으로 갈수록 높아지는 형태의 리브(115b)가 형성되어 있다. 그리하여 도 4-(b)에 보여지는 바와 같이 필터케이스(115)에 필터(140)가 장착된 상태에서 필터케이스(115)의 내측면(115a)과 필터(140) 사이에 틈새공간(G)이 확보된다. 공기유입구(112a, 112b, 112c)를 통해 좌석시트 안으로 유입된 공기는 그 틈새공간(G)을 통해 필터(140) 쪽으로 유동할 수 있다.Referring to FIG. 4 , a rib 115b is formed on the inner surface 115a of the filter case 115 and increases toward the lower end. Thus, as shown in FIG. 4-(b), a gap space (G) exists between the inner surface (115a) of the filter case (115) and the filter (140) in a state where the filter (140) is mounted on the filter case (115). this is secured Air introduced into the seat through the air inlets 112a, 112b, and 112c may flow toward the filter 140 through the interstitial space G.
도 5는 시트백커버어셈블리(100)의 내측을 보이는 도면이고, 도 6은 도 5의 일부분을 다른 각도에서 보이는 도면이다.5 is a view showing the inside of the seat back cover assembly 100, and FIG. 6 is a view showing a portion of FIG. 5 from another angle.
도 5를 참조하면, 시트백커버어셈블리(100)는 시트백커버(110)의 내측면에 빌트인 타입으로 구비된 공기정화장치(120)를 포함한다.Referring to FIG. 5 , the seat back cover assembly 100 includes an air purifier 120 provided as a built-in type on the inner surface of the seat back cover 110 .
공기정화장치(120)는 복수의 팬모듈(131, 132), 필터(140), 가이드덕트(150), 내측커버(160) 및 제어모듈(170)을 포함한다.The air purifier 120 includes a plurality of fan modules 131 and 132, a filter 140, a guide duct 150, an inner cover 160, and a control module 170.
도 5에서 화살표로 표시된 바와 같이, 공기정화장치(120)가 가동될 때 공기유입구(112a, 112b, 112c)를 통해 좌석시트 안으로 유입된 차량실내공기는 전술한 틈새공간(G)(도 4 참조)을 통해 필터(140)의 일측면 쪽으로 유입되며 필터(140)를 통과한 후에는 가이드덕트(150)를 통해 분기되어 복수의 팬모듈(131, 132)과 내측커버(160) 안쪽 공간을 거쳐 공기배출구(113)를 통해 좌석시트 밖으로 배출된다.As indicated by arrows in FIG. 5 , when the air purifier 120 is operated, the vehicle interior air introduced into the seat through the air inlets 112a, 112b, and 112c forms the aforementioned interstitial space G (see FIG. 4 ). ) flows into one side of the filter 140, and after passing through the filter 140, it branches through the guide duct 150 and passes through the plurality of fan modules 131 and 132 and the inner space of the inner cover 160. It is discharged out of the seat through the air outlet 113.
도 6을 참조하면, 가이드덕트(150)가 필터케이스(115)를 덮고 있지만 전술한 틈새공간(G)은 가려지지 않고 여전히 노출된 상태로 유지되므로 그 틈새공간(G)을 통한 필터(140) 일측면 쪽으로의 공기 유입이 허용된다.Referring to FIG. 6, although the guide duct 150 covers the filter case 115, the aforementioned interstitial space G is not covered and remains exposed, so that the filter 140 through the interstitial space G Air inflow to one side is allowed.
복수의 팬모듈(131, 132)은 공기정화장치(120) 가동 시에 흡입력을 제공하며, 그 흡입력에 의해 차량시트 안팎으로 차량실내공기가 순환될 수 있다.The plurality of fan modules 131 and 132 provide a suction force when the air purifier 120 is operated, and the air inside the vehicle can be circulated in and out of the vehicle seat by the suction force.
도 5에 도시된 바와 같이, 일 실시예에 따르면 공기정화장치(120)에 2개의 팬모듈(131, 132)이 구비될 수 있고, 2개의 팬모듈(131, 132)은 제어모듈(170)의 좌우측에 하나씩 배치될 수 있다.As shown in FIG. 5 , according to an embodiment, the air purifier 120 may include two fan modules 131 and 132, and the two fan modules 131 and 132 are controlled by a control module 170. It may be disposed one by one on the left and right sides of.
이처럼 팬모듈(131, 132)이 듀얼 타입으로 적용되므로 공기정화장치(120) 가동 시에 공기 순환이 빠르게 진행되어 차량실내공기 정화가 신속하게 수행될 수 있다.As such, since the fan modules 131 and 132 are applied in a dual type, air circulation proceeds rapidly when the air purifier 120 is operated, so that air purification inside the vehicle can be quickly performed.
필터(140)는 차량실내공기를 정화시키는 역할을 한다. 공기정화장치(120) 가동 시에 차량시트 안으로 유입된 차량실내공기는 필터(140)를 거쳐 차량시트 밖으로 배출되며, 필터(140)를 통과하는 과정에서 먼지 등의 이물질들이 필터링됨으로써 유입공기가 깨끗하게 정화된다.The filter 140 serves to purify air inside the vehicle. When the air purifier 120 is operating, the vehicle interior air that has flowed into the vehicle seat passes through the filter 140 and is discharged out of the vehicle seat. In the process of passing through the filter 140, foreign substances such as dust are filtered out so that the inflow air is clean. It is purified.
가이드덕트(150)는 필터(140)와 복수의 팬모듈(131, 132) 사이의 유로를 형성하는 부재로서, 필터(140)를 통과한 공기는 가이드덕트(150)를 통해 안내되어 복수의 팬모듈(131, 132)로 분기 유입된다.The guide duct 150 is a member that forms a flow path between the filter 140 and the plurality of fan modules 131 and 132, and the air passing through the filter 140 is guided through the guide duct 150 to a plurality of fans. It branches into modules 131 and 132.
내측커버(160)는 시트백커버(110)의 내측면 상단부에 결합되며 팬모듈(131, 132)로부터 배출된 공기를 공기배출구(113)로 안내하는 역할을 한다.The inner cover 160 is coupled to the upper part of the inner surface of the seat back cover 110 and serves to guide the air discharged from the fan modules 131 and 132 to the air outlet 113.
제어모듈(170)은 팬모듈(131, 132)에 전기를 공급하며 팬모듈(131, 132)의 동작을 제어하는 구성이다.The control module 170 supplies electricity to the fan modules 131 and 132 and controls the operation of the fan modules 131 and 132 .
도 7은 가이드덕트(150) 및 팬모듈(131, 132)이 분리된 상태로 시트백커버어셈블리(100)를 보이는 도면이고, 도 8은 팬모듈(131, 132)의 장착 전후 모습을 보이는 도면이다.7 is a view showing the seat back cover assembly 100 in a state in which the guide duct 150 and the fan modules 131 and 132 are separated, and FIG. 8 is a view showing the before and after mounting of the fan modules 131 and 132. .
이를 참조하면, 내측커버(160)는 시트백커버(110)의 내측면 상단부에 결합되며 복수의 팬모듈 접속구(161, 162)를 구비한다. 각각의 팬모듈 접속구(161, 162)에 팬모듈(131, 132)이 하나씩 접속된다. 팬모듈(131, 132)로 유입된 공기는 팬모듈 접속구(161, 162)를 통해 내측커버(160) 안쪽 공간으로 유입된 후 공기배출구(113)를 통해 차량시트 밖으로 배출된다.Referring to this, the inner cover 160 is coupled to the upper end of the inner surface of the seat back cover 110 and has a plurality of fan module connectors 161 and 162 . The fan modules 131 and 132 are connected to each of the fan module connectors 161 and 162 one by one. The air introduced into the fan modules 131 and 132 is introduced into the inner space of the inner cover 160 through the fan module connectors 161 and 162 and is then discharged out of the vehicle seat through the air outlet 113 .
도 9는 가이드덕트(150)를 보이는 도면이다.9 is a view showing the guide duct 150.
이를 참조하면, 가이드덕트(150)는 필터케이스 커버부(151) 및 한 쌍의 분기덕트부(153, 154)를 포함한다.Referring to this, the guide duct 150 includes a filter case cover part 151 and a pair of branch duct parts 153 and 154.
필터케이스 커버부(151)는 전술한 필터케이스(115)를 커버하는 부분이다. 한 쌍의 분기덕트부(153, 154)는 필터케이스(115)와 복수의 팬모듈(131, 132)을 연결하는 부분으로서, 제1 분기덕트부(153)가 제1 팬모듈(131)에 연결되고 제2 분기덕트부(154)가 제2 팬모듈(132)에 연결된다.The filter case cover part 151 is a part that covers the filter case 115 described above. The pair of branch duct parts 153 and 154 connect the filter case 115 and the plurality of fan modules 131 and 132, and the first branch duct part 153 is connected to the first fan module 131. and the second branch duct unit 154 is connected to the second fan module 132.
각각의 분기덕트부(153, 154)에는 그 외측단에 플랜지부(153a, 154b)가 구비된다. 플랜지부(153a, 154b)는 팬모듈(131, 132)의 상면에 밀착 배치되며 나사들에 의해 팬들(131, 132)에 결합된다.Each of the branch duct parts 153 and 154 is provided with flange parts 153a and 154b at their outer ends. The flange portions 153a and 154b are disposed in close contact with the upper surfaces of the fan modules 131 and 132 and are coupled to the fans 131 and 132 by screws.
이러한 구조의 가이드덕트(150) 만으로 필터(140)와 팬모듈(131, 132) 사이의 유로가 형성되며 필터(140)를 통과한 공기는 가이드덕트(150)에 의해 구획된 유로를 통해 누설됨 없이 팬모듈(131, 132)로 흐르게 된다.A flow path between the filter 140 and the fan modules 131 and 132 is formed only with the guide duct 150 having this structure, and the air passing through the filter 140 leaks through the flow path partitioned by the guide duct 150. flow to the fan modules 131 and 132 without
Claims (4)
- 시트백커버(110); 및seat back cover 110; and상기 시트백커버(110)에 빌트인 타입으로 구비된 공기정화장치(120);를 포함하는An air purifier 120 provided as a built-in type in the seat back cover 110;공기정화장치가 통합 설계된 시트백커버어셈블리.Seat back cover assembly with integrated air filter.
- 청구항 1에 있어서,The method of claim 1,상기 시트백커버(110)에 복수의 공기유입구(112a, 112b, 112c), 복수의 공기배출구(113) 및 시트백포켓 장착홈(114)이 형성되며, 상기 시트백 장착홈(114)의 내측벽을 따라 상기 복수의 공기유입구(112a, 112b, 112c)가 형성된A plurality of air inlets 112a, 112b, 112c, a plurality of air outlets 113, and a seatback pocket mounting groove 114 are formed in the seatback cover 110, along the inner wall of the seatback mounting groove 114. The plurality of air inlets (112a, 112b, 112c) are formed공기정화장치가 통합 설계된 시트백커버어셈블리.Seat back cover assembly with integrated air filter.
- 청구항 1에 있어서,The method of claim 1,상기 시트백커버(110)에는 시트백포켓(116) 안쪽에 위치한 필터케이스(115)가 구비되며, 상기 필터케이스(115)의 내측면(115a)에는 하단으로 갈수록 높아지는 형태의 리브(115b)가 형성되어 상기 필터케이스(115)의 내측면(115a)과 상기 필터케이스(115)에 장착된 필터(140) 사이에 틈새공간(G)이 확보되는The seatback cover 110 is provided with a filter case 115 located inside the seatback pocket 116, and a rib 115b is formed on the inner surface 115a of the filter case 115 in a form that increases toward the bottom, A gap space (G) is secured between the inner surface (115a) of the filter case (115) and the filter (140) mounted on the filter case (115)공기정화장치가 통합 설계된 시트백커버어셈블리.Seat back cover assembly with integrated air filter.
- 청구항 1에 있어서,The method of claim 1,상기 시트백커버(110)에는 시트백포켓(116) 안쪽에 위치한 필터케이스(115)가 구비되며, 상기 공기정화장치(120)는 한 쌍의 팬모듈(131, 132), 필터(140), 가이드덕트(150) 및 내부커버(160)를 포함하며, 상기 내측커버(160)에 상기 한 쌍의 팬모듈(131, 132)이 접속되며, 상기 가이드덕트(150)는 상기 필터케이스(115)를 커버하는 필터케이스 커버부(151) 및 상기 필터케이스 커버부(151)와 상기 한 쌍의 팬모듈(131, 132)을 연결하는 한 쌍의 분기덕트부(153, 154)를 포함하는The seat back cover 110 has a filter case 115 located inside the seat back pocket 116, and the air purifier 120 includes a pair of fan modules 131 and 132, a filter 140, and a guide duct. 150 and an inner cover 160, the pair of fan modules 131 and 132 are connected to the inner cover 160, and the guide duct 150 covers the filter case 115. It includes a filter case cover part 151 and a pair of branch duct parts 153 and 154 connecting the filter case cover part 151 and the pair of fan modules 131 and 132.공기정화장치가 통합 설계된 시트백커버어셈블리.Seat back cover assembly with integrated air filter.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR2020210001647U KR200496990Y1 (en) | 2021-05-25 | 2021-05-25 | A seatback cover assembly in which a dual fan type of air purifying apparatus is integrally designed |
KR20-2021-0001647 | 2021-05-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022250296A1 true WO2022250296A1 (en) | 2022-12-01 |
Family
ID=84230081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2022/005629 WO2022250296A1 (en) | 2021-05-25 | 2022-04-19 | Seat back cover assembly designed with integrated dual fan-type air purification device |
Country Status (2)
Country | Link |
---|---|
KR (2) | KR200496990Y1 (en) |
WO (1) | WO2022250296A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19990040980A (en) * | 1997-11-20 | 1999-06-15 | 양재신 | Air cleaning car seat |
JP2016113088A (en) * | 2014-12-17 | 2016-06-23 | シャープ株式会社 | Vehicular air cleaner |
KR200491354Y1 (en) * | 2019-11-21 | 2020-03-26 | 오토앤 주식회사 | A seatback cover assembly having air purifying apparatus of built-in type and a vehicle seat including the same |
JP2021016426A (en) * | 2019-07-17 | 2021-02-15 | 日本発條株式会社 | Air cleaning unit and vehicular seat |
KR102226755B1 (en) * | 2020-10-26 | 2021-03-10 | 조영호 | Vehicle seat assembly with air cleaning function on the backrest |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100653955B1 (en) | 2005-07-01 | 2006-12-05 | 주식회사 일광 | Air purifier built in the rear shelf of a car |
KR20160027427A (en) | 2014-08-29 | 2016-03-10 | 주식회사 시마스 | arm rest contained an air cleaner |
JP2016222177A (en) | 2015-06-02 | 2016-12-28 | いすゞ自動車株式会社 | Air purification device for vehicle |
-
2021
- 2021-05-25 KR KR2020210001647U patent/KR200496990Y1/en active IP Right Grant
-
2022
- 2022-04-19 WO PCT/KR2022/005629 patent/WO2022250296A1/en active Application Filing
-
2023
- 2023-06-23 KR KR2020230001279U patent/KR20230001426U/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR19990040980A (en) * | 1997-11-20 | 1999-06-15 | 양재신 | Air cleaning car seat |
JP2016113088A (en) * | 2014-12-17 | 2016-06-23 | シャープ株式会社 | Vehicular air cleaner |
JP2021016426A (en) * | 2019-07-17 | 2021-02-15 | 日本発條株式会社 | Air cleaning unit and vehicular seat |
KR200491354Y1 (en) * | 2019-11-21 | 2020-03-26 | 오토앤 주식회사 | A seatback cover assembly having air purifying apparatus of built-in type and a vehicle seat including the same |
KR102226755B1 (en) * | 2020-10-26 | 2021-03-10 | 조영호 | Vehicle seat assembly with air cleaning function on the backrest |
Also Published As
Publication number | Publication date |
---|---|
KR200496990Y1 (en) | 2023-06-29 |
KR20230001426U (en) | 2023-07-12 |
KR20220002844U (en) | 2022-12-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107023895B (en) | Indoor air conditioner for multiple rooms | |
CN104390280B (en) | A kind of window air cleaner | |
WO2022250296A1 (en) | Seat back cover assembly designed with integrated dual fan-type air purification device | |
KR20110066069A (en) | Hepa filter unit for clean room | |
WO2016117966A1 (en) | Air cleaner for overhead console of vehicle | |
WO2022250295A1 (en) | Seatback cover assembly having integrated dual-fan air purifier | |
WO2013141511A1 (en) | Structure for preventing air leakage and air cleaner having the same | |
WO2013129764A1 (en) | Water leakage preventing humidification apparatus | |
CN216347015U (en) | Air conditioner | |
WO2021091154A1 (en) | Ventilation apparatus and air conditioner including the same | |
AU2004244842A1 (en) | Modular air purification system | |
KR20200134041A (en) | Installable air purifier for fan assembly capable of assembly and detachment | |
CN207035403U (en) | The new blower fan of duct type | |
JP5018408B2 (en) | Photocatalytic air purifier | |
CN216281915U (en) | Air purification lamp | |
CN217004406U (en) | Air purifying lamp | |
CN221259020U (en) | Fresh air module and air pipe machine | |
WO2023014008A1 (en) | Filter module and air purifier comprising same | |
KR20070019277A (en) | Ventilation system | |
KR20070019280A (en) | Ventilation system | |
CN215175698U (en) | New fan of integral type | |
KR20050014271A (en) | Support structure of filter assembly for ventilation system | |
CN215260298U (en) | Small-size new fan shell structure | |
CN215863629U (en) | Fume exhaust fan | |
CN210154015U (en) | Maintenance structure of new fan |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 202237036378 Country of ref document: IN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 22811489 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 22811489 Country of ref document: EP Kind code of ref document: A1 |