Fan unit mounting structure

Abstract

To provide a fan device mounting structure that can improve workability when mounting a fan device on a vehicle. [Solution] The mounting structure for a fan unit (24) comprises the fan unit (24), a bracket (23) that is fixed to a mounting location set in an upper part of the vehicle cabin and that supports the fan unit (24), and a duct (25) to which the fan unit (24) is connected while being fixed to the mounting location and supported by the bracket (23). The fan unit (24) has a pin (33) and a fixing portion (31). The bracket (23) has a slit hole (41) that supports the fan unit (24) by engaging with the pin (33). The pin (33) and the slit hole (41) engage with each other so that the fan unit (24) can move to a connecting position where it is connected to the duct (25) while supported by the bracket (23). The fixing portion (31) is fixed to the bracket (23) when the fan unit (24) is in the connecting position.

Description

[Technical Field]

[0001] The present invention relates to a mounting structure for a fan device in a vehicle. [Background technology]

[0002] Conventionally, a known example of a vehicle ventilation system that includes this type of fan device mounting structure is shown in Patent Document 1. This vehicle ventilation system has a structure in which a heavy ventilation fan casing is fixed to a high-strength roof reinforcement with bolts. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-191747 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-described automotive ventilation system, the ventilation fan casing is attached to the roof reinforcement only with bolts. Therefore, when attaching the ventilation fan casing to the roof reinforcement, it is necessary to align the bolt holes while supporting the ventilation fan casing with one hand to prevent it from falling, and then tighten the bolts with a screwdriver held in the other hand. This results in a problem of poor workability when attaching the ventilation fan casing to the vehicle. [Means for solving the problem]

[0005] The means for solving the above problems and their effects will be described below. A mounting structure for a fan device that solves the above-mentioned problem comprises a fan device, a bracket that is fixed to an mounting location set at the top or side of the vehicle interior and supports the fan device, and a duct that is fixed to the mounting location and to which the fan device is connected while supported by the bracket, wherein the fan device has a first engagement portion and a fixing portion, the bracket has a second engagement portion that supports the fan device by engaging with the first engagement portion, the first engagement portion and the second engagement portion engage with each other so as to be movable to a connection position where the fan device is connected to the duct while supported by the bracket, and the fixing portion is fixed to the bracket when the fan device is in the connection position.

[0006] According to the above configuration, when the first engaging portion of the fan device is engaged with the second engaging portion of the bracket, the fan device is supported by the bracket. Even if the fan device is moved to the connection position in this state, the fan device can remain supported by the bracket. Therefore, even if the user releases his or her hands from the fan device at the connection position, the fan device will not fall off the bracket. Therefore, the operation of fixing the fan device to the bracket can be performed with both hands. This improves the workability when installing the fan device in a vehicle. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic cross-sectional view of a vehicle having a fan device mounting structure according to an embodiment; [Figure 2] FIG. 2 is a perspective view of the mounting structure of the fan device of FIG. [Figure 3] FIG. 2 is a bottom view of the mounting structure of the fan device of FIG. [Figure 4] FIG. [Figure 5] FIG. 2 is a perspective view of the bracket as viewed from above. [Figure 6] FIG. 2 is a perspective view of the bracket as viewed from below. [Figure 7] FIG. 4 is a perspective view showing a connection portion of the duct with the fan device. [Figure 8] 10 is a perspective view showing a state in which a pair of pins of the fan device are inserted into a pair of slit holes of the bracket, respectively. FIG. [Figure 9] 9 is a perspective view showing a state in which the fan unit in FIG. 8 has been moved to a connecting position where it is connected to a duct. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embodiment will be described below with reference to the drawings. In the following description, the front-rear direction, left-right direction, and up-down direction correspond to the front-rear direction, left-right direction (vehicle width direction), and up-down direction, with the forward movement of the vehicle 11 being the front side.

[0009] <Vehicle 11> As shown in Figure 1, front seats 14 and rear seats 15 for occupants are arranged side by side in the front-to-rear direction on a floor surface 13 within a passenger compartment 12 of a vehicle 11. An instrument panel 16 is arranged in front of the front seats 14 within the passenger compartment 12. An air conditioner 17 is arranged inside the instrument panel 16. A register 18 is provided on the surface of the instrument panel 16, and blows air conditioned by the air conditioner 17 into the passenger compartment 12.

[0010] The vehicle 11 is provided with a roof panel 19 at its upper end. A windshield 20 is arranged in front of the roof panel 19 of the vehicle 11. A roof trim 21 that constitutes the ceiling of the passenger compartment 12 is provided inside the roof panel 19 within the interior of the vehicle 11. A ceiling space K is formed between the roof panel 19 and the roof trim 21, and is an example of an attachment location set in the upper part of the interior of the vehicle 11. A roof reinforcement 22 extending in the left-right direction is arranged at the front end of the ceiling space K above the front seats 14. The interior of the vehicle 11 includes the passenger compartment 12 and the ceiling space K.

[0011] The roof reinforcement 22 has both left and right end portions fixed to the frame (not shown) of the vehicle 11. A bracket 23 is fixed to the underside of the roof reinforcement 22. A fan device 24 is supported on the bracket 23. A duct 25 to which the fan device 24 supported by the bracket 23 is connected is fixed behind the fan device 24 on the roof trim 21 in the ceiling space K. The fan device 24, the bracket 23, and the duct 25 constitute an attachment structure for the fan device 24 in the vehicle 11.

[0012] <Fan unit 24> 2 to 4, the fan device 24 is, for example, a sirocco fan device. The fan device 24 has a case 26 and a fan 27 housed in the case 26. The case 26 has a hollow cylindrical main body 28 and a rectangular tubular blowout portion 29 that communicates with the main body 28 and protrudes tangentially from the peripheral wall of the main body 28. In other words, the blowout portion 29 protrudes rearward from the rear part of the peripheral wall of the main body 28.

[0013] A fan 27, which is driven to rotate by supplying electric power, is housed within main body 28 and is rotatable about an axis extending in the vertical direction. A circular air inlet 30 opens on the underside of main body 28. As fan 27 is driven to rotate, fan device 24 blows air drawn in through air inlet 30 out of blowout section 29.

[0014] A pair of left and right fixing portions 31 are provided on both sides of the peripheral wall of the main body portion 28, sandwiching the blowing portion 29 in the circumferential direction, so as to protrude in the radial direction. The fixing portions 31 are formed in a generally trapezoidal plate shape with an arc-shaped tip. Fixing holes 32 are formed to pass through the fixing portions 31. A pair (plural) of left and right pins 33, which serve as an example of first engaging portions, are erected on the upper surface of the main body portion 28. The pair of pins 33 are arranged to face each other across the center of the upper surface of the main body portion 28 in the left-right direction.

[0015] As shown in Fig. 4, the pin 33 is T-shaped. That is, the pin 33 has a general portion 34 in the form of a rectangular plate erected on the upper surface of the main body 28, and a first wide portion 35 which is integrally formed at the upper end of the general portion 34 so as to be perpendicular to the general portion 34 and has a rounded, approximately rectangular plate shape. The first wide portion 35 is wider in the left-right direction than the general portion 34. The first wide portion 35 is disposed in an orientation such that its longitudinal direction is the left-right direction and its thickness direction is the up-down direction. The general portion 34 is disposed in an orientation such that its longitudinal direction is the up-down direction and its thickness direction is the left-right direction.

[0016] <Bracket 23> 2, 5, and 6, the bracket 23 is made of metal and has a generally rectangular plate shape with the left-right direction as the longitudinal direction. A raised portion 36 is formed on the upper surface of the bracket 23 at a position slightly rearward of the center in the front-to-rear direction so as to extend in the left-to-right direction. The raised portion 36 is formed by bending the bracket 23. Therefore, the lower surface of the bracket 23, which is the surface opposite the raised portion 36, is recessed by the amount of the raised portion 36.

[0017] The bracket 23 is fixed at its raised portion 36 to the underside of the roof reinforcement 22 (see FIG. 1) by welding or the like. A pair of fixed portions 37 to which the pair of fixing portions 31 of the fan unit 24 are fixed are formed on both left and right ends of the rear end of the bracket 23. The fixed portion 37 has a disk-shaped tongue portion 39 having an insertion hole 38 in the center, and a nut 40 fixed to the upper surface of the tongue portion 39 by welding or the like. The axis of the insertion hole 38 coincides with the axis of the nut 40.

[0018] A pair (plurality) of left and right slit holes 41 as an example of second engagement portions that respectively engage with the pair of pins 33 are formed so as to penetrate the bracket 23 at a position forward of the raised portion 36. The pair of slit holes 41 are arranged so as to face each other across the center portion in the left-right direction in the region forward of the raised portion 36 of the bracket 23. The pair of pins 33 of the fan device 24 are slidably inserted into the pair of slit holes 41, respectively.

[0019] The bracket 23 supports the fan unit 24 by engaging a pair of slits 41 with a pair of pins 33. The pair of slits 41 extend from the front side toward the rear side, which is the connection portion between the fan unit 24 and the duct 25. The slits 41 have a second wide portion 42 that is wider in the left-right direction than the first wide portion 35 of the pin 33, and a narrow portion 43 that extends from the second wide portion 42 toward the connection portion (rear side) and is wider in the left-right direction than the general portion 34 of the pin 33 and narrower in the left-right direction than the first wide portion 35.

[0020] A pair of guide portions 44 that guide the pin 33 from the second wide portion 42 to the narrow portion 43 are formed between the second wide portion 42 and the narrow portion 43 in the slit hole 41. The guide portions 44 extend obliquely relative to the second wide portion 42 and the narrow portion 43, which extend linearly. In other words, the guide portions 44 extend obliquely relative to the second wide portion 42 and the narrow portion 43 so as to guide the general portion 34 of the pin 33 from the second wide portion 42 to the narrow portion 43.

[0021] The pair of pins 33 and the pair of slit holes 41 are engaged to be movable to a connection position where the fan device 24, supported by the bracket 23, is connected to the duct 25. The connection position of the fan device 24 is a position where the pair of pins 33, inserted into the pair of slit holes 41, slide and reach the rear ends of the narrow portions 43 of the pair of slit holes 41. The pair of fixing portions 31 of the fan device 24 are fixed to the pair of fixed portions 37 of the bracket 23 by a pair of bolts 45 when the fan device 24 is in the connection position.

[0022] <Duct 25> 1 and 2, the duct 25 is configured such that it branches from a branching portion 46 at its front end into two branch pipes 47 in the left and right directions, and the two branch pipes 47 then extend rearward. The front side of the duct 25 is the upstream side and the rear side is the downstream side. A pair of left and right rear openings 48 are formed above the rear seat 15 in the roof trim 21. The rear ends of the two branch pipes 47 of the duct 25 open into the vehicle interior 12 from the pair of rear openings 48, respectively.

[0023] As shown in FIGS. 2 and 7 , the duct 25 has an insertion portion 49 that opens in a rectangular shape at its front end. A rectangular, annular sealant 50 is provided on the inner circumferential surface of the insertion portion 49. The sealant 50 is made of, for example, a resilient closed-cell foam or silicone rubber. The blowout portion 29 of the fan unit 24 is inserted into the insertion portion 49 of the duct 25 when the fan unit 24 is in the connected position. The sealant 50 seals between the insertion portion 49 and the blowout portion 29 when the blowout portion 29 of the fan unit 24 is inserted into the insertion portion 49.

[0024] <Ceiling structure of cabin 12> As shown in Figures 1 and 2, a front opening 51 is formed in the front end of the roof trim 21. The front opening 51 exposes the portion from the fan unit 24 to the front end of the duct 25 inside the vehicle interior 12. A cover member 52 is disposed on the lower surface of the roof trim 21 so as to cover the front opening 51. The cover member 52 is detachably attached to the lower surface of the roof trim 21. A plurality of air vents 53 are formed in the cover member 52.

[0025] <Operation of the embodiment> Next, the operation of the fan device 24 when it is attached to the vehicle 11 will be described. 1 and 8, when attaching the fan unit 24 to the vehicle 11, first, the cover member 52 is removed from the roof trim 21. Next, the pair of pins 33 of the fan unit 24 are inserted from below into the second wide portions 42 of the pair of slit holes 41 of the bracket 23 so that the outlet portion 29 of the fan unit 24 faces the insertion portion 49 of the duct 25. At this time, when the upper surface of the main body 28 of the fan unit 24 is brought into contact with the lower surface of the portion of the bracket 23 that is forward of the raised portion 36, the first wide portion 35 of the pin 33 is positioned above the second wide portion 42 of the slit hole 41.

[0026] As a result, the general portions 34 of the pair of pins 33 are inserted into the second wide portions 42 of the pair of slit holes 41. Next, the fan device 24 is moved toward the duct 25 so that the general portions 34 of the pair of pins 33 slide from the second wide portions 42 toward the narrow portions 43 of the pair of slit holes 41. At this time, the general portions 34 of the pins 33 are guided from the second wide portions 42 to the narrow portions 43 by the guide portions 44.

[0027] As shown in Figure 9, when the fan unit 24 is moved toward the duct 25 until the general portions 34 of the pair of pins 33 reach the rear ends of the narrow portions 43 of the pair of slit holes 41, the fan unit 24 is positioned at a connection position where the blowing portion 29 is inserted into the insertion portion 49 of the duct 25 by an appropriate insertion amount and connected.

[0028] At this time, blowing portion 29 fits into sealing material 50 provided on the inner peripheral surface of insertion portion 49, so that the gap between insertion portion 49 and blowing portion 29 is sealed by sealing material 50. Furthermore, even if blowing portion 29 and insertion portion 49 are slightly misaligned at this time, the elasticity of sealing material 50 will absorb the misalignment.

[0029] Furthermore, when the fan device 24 is in the connected position, the positions of the pair of fixing portions 31 of the fan device 24 correspond in the up-down direction to the positions of the pair of fixed portions 37 of the bracket 23. Furthermore, in this state, even if you let go of the fan device 24, the first wide portions 35 of the pair of pins 33 of the fan device 24 engage with the upper surface of the bracket 23. In other words, because the fan device 24 is supported by the bracket 23 at the pair of pins 33, the fan device 24 will not fall off the bracket 23.

[0030] 2, a pair of bolts 45 are inserted from below through the fixing holes 32 of the pair of fixing portions 31 and the insertion holes 38 of the pair of fixed portions 37, and then screwed onto the nuts 40 of the pair of fixed portions 37 and tightened. At this time, the fan unit 24 will not fall even if it is not supported with one hand, so the work of tightening the pair of bolts 45 can be done with both hands. This improves the workability of this work. Thereafter, the cover member 52 is attached to the roof trim 21, completing the work of attaching the fan unit 24 to the vehicle 11.

[0031] Furthermore, when removing the fan unit 24 from the bracket 23, the fan unit 24 will not fall even if the pair of bolts 45 is loosened, so the work of loosening the pair of bolts 45 can be done with both hands, improving the workability.

[0032] Next, the operation of the fan device 24 when in use will be described. 1, for example, when the air conditioner 17 is operated in the summer, cool air is blown out from the register 18 toward the vicinity of the front seats 14 in the vehicle interior 12. As a result, the temperature near the front seats 14 in the vehicle interior 12 drops, but because the cool air blown out from the register 18 does not reach the rear seats 15 in the vehicle interior 12, the temperature near the rear seats 15 in the vehicle interior 12 drops very little.

[0033] When fan unit 24 is driven, low-temperature air near front seats 14 in passenger compartment 12 is drawn into fan unit 24 through multiple vent holes 53 in cover member 52. The low-temperature air drawn into fan unit 24 is blown out from blowout portion 29 into duct 25. At this time, since sealing material 50 seals between insertion portion 49 of duct 25 and blowout portion 29 of fan unit 24, it is possible to prevent low-temperature air from leaking out from between insertion portion 49 and blowout portion 29 to the outside.

[0034] Furthermore, at this time, the blowout portion 29 is in contact with the seal material 50 but is not in contact with the insertion portion 49 (duct 25). Therefore, vibrations generated when the fan device 24 is driven are absorbed by the seal material 50 and are hardly transmitted to the insertion portion 49 (duct 25). Therefore, the generation of abnormal noises caused by vibrations generated when the fan device 24 is driven is suppressed.

[0035] The low-temperature air blown into the duct 25 from the outlet 29 flows through two branch pipes 47 of the duct 25, and then is blown out from a pair of rear openings 48 of the roof trim 21 toward the vicinity of the rear seats 15 in the passenger compartment 12. This reduces the temperature near the rear seats 15 in the passenger compartment 12.

[0036] In this way, by driving the fan device 24, the air blown out from the register 18 is sent to the vicinity of the rear seat 15 in the passenger compartment 12, thereby circulating the air throughout the passenger compartment 12. As a result, the temperature of the air throughout the passenger compartment 12 becomes almost uniform, making the passenger compartment 12 comfortable.

[0037] <Effects of the embodiment> According to the embodiment described above in detail, the following effects are achieved. (1) The mounting structure for the fan unit 24 includes the fan unit 24, a bracket 23 that is fixed to a ceiling space K set in the upper part of the interior of the vehicle 11 and that supports the fan unit 24, and a duct 25 to which the fan unit 24 is connected while being fixed to the ceiling space K and supported by the bracket 23. The fan unit 24 has a pin 33 and a fixing portion 31. The bracket 23 has a slit hole 41 that supports the fan unit 24 by engaging with the pin 33. The pin 33 and the slit hole 41 are engaged with each other so that the fan unit 24 can move to a connecting position where it is connected to the duct 25 while supported by the bracket 23. The fixing portion 31 is fixed to the bracket 23 when the fan unit 24 is in the connecting position.

[0038] According to the above configuration, when the pin 33 of the fan device 24 is engaged with the slit hole 41 of the bracket 23, the fan device 24 is supported by the bracket 23. Even if the fan device 24 is moved to the connection position in this state, the fan device 24 remains supported by the bracket 23. Therefore, even if the hand is released from the fan device 24 at the connection position, the fan device 24 will not fall off the bracket 23. Therefore, the operation of fixing the fan device 24 to the bracket 23 can be performed with both hands. This improves the workability when installing the fan device 24 in the vehicle 11.

[0039] (2) In the mounting structure of the fan unit 24, the fan unit 24 has a pair of pins 33. The bracket 23 has a pair of slit holes 41 that engage with the pair of pins 33, respectively.

[0040] According to the above configuration, by engaging the pair of pins 33 of the fan device 24 with the pair of slit holes 41 of the bracket 23, the fan device 24 can be stably supported by the bracket 23 without rotating.

[0041] (3) In the mounting structure of the fan unit 24, the pin 33 has a general portion 34 and a first wide portion 35 that is wider than the general portion 34. The slit 41 is configured so that the pin 33 is slidably inserted therethrough and extends toward the connection between the fan unit 24 and the duct 25. The slit 41 has a second wide portion 42 that is wider than the first wide portion 35, and a narrow portion 43 that extends from the second wide portion 42 toward the connection and is wider than the general portion 34 but narrower than the first wide portion 35. A guide portion 44 that guides the pin 33 from the second wide portion 42 to the narrow portion 43 is formed in the slit 41 between the second wide portion 42 and the narrow portion 43.

[0042] According to the above configuration, when the general portion 34 of the pin 33 is moved to the narrow portion 43 of the slit 41 with the first wide portion 35 of the pin 33 inserted into the second wide portion 42 of the slit 41, the general portion 34 is guided to the narrow portion 43 by the guide portion 44. Therefore, the general portion 34 of the pin 33 can be smoothly moved from the second wide portion 42 of the slit 41 to the narrow portion 43.

[0043] (4) In the mounting structure of the fan unit 24, the fan unit 24 has a blowing portion 29 that is inserted into an insertion portion 49 of the duct 25 and blows out air when the fan unit 24 is in the connected position. The insertion portion 49 is provided with a sealing material 50 that seals the gap between the insertion portion 49 and the blowing portion 29 when the blowing portion 29 is inserted.

[0044] According to the above configuration, when the blowing portion 29 is inserted into the insertion portion 49, the gap between the insertion portion 49 and the blowing portion 29 is sealed by the sealing material 50. Therefore, it is possible to prevent the air blown from the blowing portion 29 into the duct 25 from leaking out from between the insertion portion 49 and the blowing portion 29 to the outside.

[0045] <Example of change> The above embodiment can be modified as follows: Furthermore, the above embodiment and the following modifications can be combined with each other within the scope of technical compatibility.

[0046] The sealing material 50 may be omitted. The guide portion 44 in the slit 41 of the bracket 23 may be omitted. That is, the second wide portion 42 and the narrow portion 43 in the slit 41 may be directly connected.

[0047] The number of pins 33 provided on the fan device 24 may be one or three or more. In this case, the number of slit holes 41 provided on the bracket 23 may be one or three or more, in accordance with the number of pins 33 provided on the fan device 24.

[0048] The mounting location where the bracket 23 is fixed may be set to a side of the interior of the vehicle 11. That is, the mounting location where the bracket 23 is fixed may be set, for example, in the space between an exterior panel and an interior panel on the side of the vehicle 11. This space is included in the interior of the vehicle 11.

[0049] The first engagement portion may be configured by the slit 41, and the second engagement portion may be configured by the pin 33. That is, the fan device 24 may be provided with the slit 41, and the bracket 23 may be provided with the pin 33.

[0050] <Additional Notes> The above embodiment includes the configurations described in the following supplementary notes. [Appendix 1] A mounting structure for a fan device comprising: a fan device; a bracket that is fixed to an mounting location set on the upper or side of a vehicle interior and supports the fan device; and a duct that is fixed to the mounting location and to which the fan device is connected while being supported by the bracket, wherein the fan device has a first engagement portion and a fixing portion, the bracket has a second engagement portion that supports the fan device by engaging with the first engagement portion, the first engagement portion and the second engagement portion engage with each other so that the fan device can move to a connection position where it is connected to the duct while being supported by the bracket, and the fixing portion is fixed to the bracket when the fan device is in the connection position.

[0051] [Appendix 2] The fan device mounting structure described in [Appendix 1] is characterized in that the fan device has a plurality of first engagement portions, and the bracket has a plurality of second engagement portions that respectively engage with the plurality of first engagement portions.

[0052] [Appendix 3] The mounting structure for a fan device described in [Appendix 1] or [Appendix 2], characterized in that the first engagement portion is constituted by a pin having a general portion and a first wide portion wider than the general portion, the second engagement portion is constituted by a slit hole through which the pin is slidably inserted and which extends toward the connection portion between the fan device and the duct, the slit hole has a second wide portion wider than the first wide portion and a narrow portion which extends from the second wide portion toward the connection portion and is wider than the general portion and narrower than the first wide portion, and a guide portion is formed between the second wide portion and the narrow portion of the slit hole to guide the pin from the second wide portion to the narrow portion.

[0053] [Appendix 4] A mounting structure for a fan device described in any one of [Appendix 1] to [Appendix 3], characterized in that when the fan device is in the connected position, it has a blowing portion that is inserted into the insertion portion of the duct and blows out air, and the insertion portion is provided with a sealing material that seals between the insertion portion and the blowing portion when the blowing portion is inserted. [Explanation of symbols]

[0054] 11...Vehicle 12...Vehicle compartment 13...Floor 14...Front seat 15...back seat 16...Instrument panel 17...Air conditioner 18...Register 19...Roof panel 20...Windshield 21...Roof trim 22...Roof reinforcement 23...Bracket 24...Fan unit 25...Duct 26…Case 27...Fan 28...Main body 29...Blowout section 30...Intake port 31...Fixed part 32…Fixing hole 33... Pin as an example of a first engagement portion 34…General section 35...First wide section 36...Protuberance 37…Fixed part 38...Through hole 39...tongue part 40...Nut 41...Slit hole as an example of a second engagement portion 42...Second wide section 43...Narrow part 44…Information Department 45...volts 46...Branch 47...Branch pipe 48...Rear opening 49...insertion part 50...Sealing material 51...Front opening 52...Cover member 53...Ventilation hole K: Ceiling space as an example of installation location

Claims

1. A fan device; a bracket that is fixed to a mounting location set at the top or side of the vehicle interior and supports the fan device; a duct to which the fan device, which is fixed to the mounting location and supported by the bracket, is connected; Equipped with the fan device has a first engagement portion and a fixing portion, the bracket has a second engagement portion that supports the fan unit by engaging with the first engagement portion; the first engaging portion and the second engaging portion are engaged with each other so as to be movable to a connecting position where the fan unit is connected to the duct in a state where the fan unit is supported by the bracket; The fan unit mounting structure, wherein the fixing portion is fixed to the bracket when the fan unit is in the connected position.

2. the fan device has a plurality of the first engagement portions, 2. The fan unit mounting structure according to claim 1, wherein the bracket has a plurality of second engaging portions that engage with the plurality of first engaging portions, respectively.

3. the first engagement portion is configured by a pin having a general portion and a first wide portion that is wider than the general portion, the second engagement portion is configured as a slit hole through which the pin is slidably inserted and which extends toward a connection portion between the fan device and the duct, the slit hole has a second wide portion that is wider than the first wide portion, and a narrow portion that extends from the second wide portion toward the connecting portion, is wider than the general portion, and is narrower than the first wide portion, 3. The fan device mounting structure according to claim 1, wherein a guide portion is formed between the second wide portion and the narrow portion of the slit hole to guide the pin from the second wide portion to the narrow portion.

4. the fan device has a blowing portion that is inserted into an insertion portion of the duct and blows out air when the fan device is in the connected position, 3. The fan device mounting structure according to claim 1, wherein the insertion portion is provided with a seal material that seals between the insertion portion and the blowing portion when the blowing portion is inserted.

Images