JP6544729B2 - Vehicle air conditioner - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a vehicle air conditioner for performing cooling and heating in a vehicle and antifogging of a windshield and the like.

  The vehicle air conditioner mixes cold air cooled by the evaporator and warm air heated by the heater core in the mixing chamber to form air conditioning air, and this air conditioning air is blown out to the passenger compartment to provide a comfortable air conditioning for the occupants. And also anti-fogging the windshield, side glass, etc. In air conditioning by vehicle air conditioners, the air inside the vehicle is circulated by the air blower of the vehicle air conditioner while air circulation (air inside the vehicle) is circulated by air blowers of the vehicle air conditioner and air cooled outside (air) taken by the blower from outside the vehicle There is an open air intake mode in which heating or the like is performed to perform heating and cooling.

  In the vehicle air conditioner, the intake door switches between intake of outside air and intake of inside air, and a blower of the vehicle air conditioner disposed downstream of the intake door blows air to the evaporator. A filter is disposed between the intake door and the blower, and the filter removes dust and the like in the outside air when taking in the outside air, and removes dust and the like in the inside air when circulating the inside air. The filter is mounted at a predetermined position in the vehicle manufacturing process, and is cleaned or replaced at the time of maintenance inspection. Therefore, it is desirable that filter attachment and detachment be easy.

  However, air conditioners for vehicles are generally disposed in a narrow space near the driver's seat or the passenger seat, and an opening for attaching / detaching a filter is disposed in a narrow space near the instrument panel or glove box. . Such placement restrictions impose restrictions on filter attachment and detachment operations. Furthermore, in order to reduce air flow resistance and noise, it is necessary to secure a certain distance between the filter and the blower, which may lead to restrictions on the placement of the opening for attachment and detachment. Therefore, the workability of attaching and detaching the filter may be further reduced.

  In order to realize a vehicle air conditioner capable of eliminating or reducing such a reduction in the workability of attaching and detaching the filter, for example, Patent Document 1 discloses a lower guide portion and an upper disposed opposite to each other to facilitate attachment and detachment of the filter. A vehicle air conditioner provided with a guide portion is disclosed.

  As shown in FIG. 8, the vehicle air conditioner 1 has a shelf-shaped lower guide portion 5 extending horizontally to place the lower surface portion of the filter 3. The upper guide 6 is disposed in the vicinity of the back side (the side facing the opening for attachment / detachment) to mount the attachment guide 6a for holding the filter 3, and between the attachment guide 6a and the opening for attachment / detachment It is provided with an inclination guide portion for regulating the attachment / detachment angle of the filter 3.

  The mounting guide 6 a is disposed in parallel with the lower guide 5, and the distance between the mounting guide 6 a and the lower guide 5 is slightly larger than the thickness of the filter 3. The inclination guide portion includes a first inclination guide portion 6 b and a second inclination guide portion 6 c. The second inclination guide portion 6c is gradually separated from the lower guide portion 5 from the mounting guide portion 6a toward the attachment / detachment opening 7 (highs upward), and the first inclination guide portion 6b is The apex 6t of the second inclined guide portion 6c (apex 6t of the upper guide portion) is directed toward the mounting / removal opening 7 and gradually approaches the lower guide portion 5 (the height is lowered). That is, the inclination guide portion (the first inclination guide portion 6b and the second inclination guide portion 6c) of the upper guide portion 6 is formed to be convex upward.

  Therefore, as shown in FIG. 9A, when the filter 3 is inserted from the opening 7 for attachment / detachment, the insertion angle can be inclined to the inclination angle of the first inclination guide 6b (the inclination of the opening for attachment 7). It can be removed from below.) When the filter 3 is inserted and its tip 3a reaches the apex 6t of the upper guide (FIG. 9 (c)), the insertion angle after that is defined by the second inclination guide 6c and gradually approaches horizontal. (FIG. 9 (d)). Eventually, the filter tip 3a reaches the mounting guide 6a, and the filter becomes substantially horizontal (FIG. 9 (e)). Further, when the filter tip 3a is inserted between the mounting guide 6a of the upper guide and the lower guide 5, the filter tip 3a reaches the back end of the mounting guide 6a (see FIG. f)) installation of the filter 3 is completed (the filter 3 is held at a predetermined position in the air passage). The removal of the filter 3 is performed in the reverse procedure.

JP 2012-236437 A

  However, in the vehicle air conditioner 1, the upper guide portion 6 is formed to be convex upward, and the distance between the lower guide portion 5 and the apex 6t of the upper guide portion is wide (because the upper guide portion 6 is high) The miniaturization of the vehicle air conditioner 1 may be hindered.

  When the air conditioner 1 for a vehicle is to be miniaturized by adopting a barrel type intake door 2 'having a lower air flow resistance than the flat type intake door 2 (FIG. 10), the rotation shaft 2c and the upper portion of the barrel type intake door are used. It is necessary to narrow the distance to the guide portion 6 (in particular, the first inclination guide portion 6b). However, since the position of the upper guide portion 6 is high, in order to avoid the interference between the rotary shaft 2c of the barrel intake door and the upper guide portion 6, the position of the rotary shaft 2c with respect to the mounting opening 7 must be increased. As a result, downsizing of the vehicle air conditioner is hindered.

  In addition, if the position of the opening 7 is set low to secure the distance between the rotary shaft 2c and the upper guide portion 6, the distance between the filter 3 and the blower 4 narrows, and the air flow resistance and air flow noise increase. Do.

  Further, in the vehicle air conditioner 1, the distance between the lower guide portion 5 and the upper guide portion 6 gradually increases from the opening 7 for removal toward the back side and reaches a maximum in the middle, and then toward the mounting guide 6a. is decreasing. Therefore, when the filter 3 is inserted, the lower guide portion 5 which can support the filter reliably until the filter front end portion 3a reaches the mounting guide portion 6a is only in the vicinity of the opening portion 7a (FIG. 9A) (D), the guide function of the lower guide 5 is not sufficient.

  That is, until the filter front end 3a reaches the mounting guide 6a, the filter 3 generates a rotational force F due to gravity with the vicinity of the opening for attachment 7a as a fulcrum. The rotational force F acts to raise the filter tip 3a at the beginning of insertion of the filter 3 shown in FIG. 9A (when the center of gravity 3g of the filter is outside the opening for attachment and detachment) (filter The tip 3a acts so as to be in contact with the first inclination guide 6b.

  However, as shown in FIG. 9 (b), when the center of gravity 3g of the filter reaches the inside of the attachment / detachment opening (when the filter tip 3a reaches slightly behind the approximate center of the air passage), the rotational force F is The direction is reversed, and the filter tip 3a tries to move away from the first inclination guide 6b (the attitude of the filter 3 becomes unstable and the filter outer end 3b tends to rise).

  However, in order to avoid interference between the mounting device provided around the opening / closing opening 7 and the filter, the filter outer end 3b is not lifted until the filter tip 3a reaches the apex 6t of the upper guide. It must be Therefore, the worker must apply a downward force to the filter outer end 3b. However, as the filter 3 is inserted, the center of gravity 3g of the filter moves further to the back than the attachment / detachment opening 7a, so the rotational force F for raising the filter outer end 3b becomes stronger. At this time, since the distance between the attachment / detachment opening 7 a and the filter outer end 3 b is short, it is extremely difficult to apply a force opposing the rotational force F.

  The same applies to the removal of the filter 3. When attaching and detaching the filter 3, it is necessary for the operator to apply not only the force in the attachment and detachment direction of the filter 3 but also a downward force to the filter outer end 3b. Detachment work is not easy.

  Therefore, the present invention can be downsized in a vehicle air conditioner in which the filter is inclined and attached and detached, and when the filter is attached and detached, the bottom side of the filter is supported in a wide area such as the lower guide An object of the present invention is to realize a vehicle air conditioner capable of stabilizing the posture of the filter in the process of attaching and detaching the filter by enhancing the guide function of the guide portion and the like).

  In order to solve the above problems, a vehicle air conditioner (claim 1) according to the present invention is a case having an air passage formed therein, and an attachment / detachment formed in the case for attaching and detaching a filter to the air passage. Opening, the opposing wall of the air passage facing the opening and closing opening, the lower guide formed from the opposite wall of the air passage facing the opening to opening and closing the filter on the lower side of the filter, and attachment and detachment of the filter on the upper side of the filter It has the upper guide part which guides.

  Here, the lower guide portion is provided with a lower mounting portion which is formed on the opposite wall side to regulate the mounting position of the filter, and a lower track portion which is formed on the mounting / dismounting opening side, The lower track portion is formed such that the crossing angle at the upper side is greater than 180 degrees.

  Therefore, since the lower opening / closing opening side of the lower track is located lower than the lower attachment, when the filter is inserted from the opening / closing opening, the lower track contacts the bottom of the filter Thus, the filter can be smoothly guided toward the lower mounting portion in a stable posture.

  Further, the upper guide portion is formed on the opposite wall side to restrict the mounting position of the filter, and the distance between the upper mounting portion and the lower mounting portion is smaller than the upper mounting portion from the upper mounting portion A first upper raceway portion formed to expand toward the attachment / detachment opening side, and a distance from the lower attachment portion to the first upper side raceway closer to the attachment / detachment opening side than the first upper raceway portion A second upper raceway portion is provided which is formed substantially parallel to the lower raceway portion so as to narrow from the raceway side toward the attachment / detachment opening side.

  Thus, when the filter is inserted from the opening for attachment and the filter tip reaches the second upper track, the second upper track makes surface contact (or line contact) with the top of the filter It can guide toward the 1st upper track part by the side of an opposing wall with a stable posture. Thus, when the filter tip reaches the first upper track, the first upper track can push the filter tip down toward the lower track, and eventually the filter tip smoothly into the upper attachment. It can lead.

  In the guide portion provided with the lower guide portion and the upper guide portion, the boundary region (the upper guide top portion) between the first upper track portion and the second upper track portion is located at the uppermost side. Here, the top of the upper guide is located closer to the opposing wall than the opening for attachment and detachment. Therefore, the height of the guide portion in the intermediate region of the air passage between the attachment / detachment opening and the opposing wall can be lowered, and for example, the rotation axis of the intake door can be disposed in the intermediate region. It is possible to miniaturize the vehicle air conditioner.

  The upper guide portion may further include a third upper track portion on the attachment / detachment opening side with respect to the second upper track portion (claim 2). Here, the intersection angle between the second upper track portion and the third upper track portion is formed greater than 180 degrees below the upper guide portion. And the space | interval of a 3rd upper track part and a lower track part is narrowed toward the 2nd upper track part from the opening part for attachment or detachment. Therefore, the third upper raceway portion can smoothly guide the tip end side of the filter inserted from the attachment / detachment opening toward the second upper raceway portion.

  The lower attachment portion and the lower track portion may have substantially the same length (length in the filter insertion direction) from the opposite wall side to the attachment / detachment opening side (claim 3). The boundary region between the lower mounting portion and the lower track portion formed in this manner is located approximately in the middle between the attaching / detaching opening and the opposing wall.

  Then, even if the center of gravity of the filter mounted in the air passage may be closer to the opposing wall than the approximate middle between the mounting / demounting opening and the opposing wall, it will be just before the mounting of the filter is completed. Thus, the lower track continues to maintain surface contact (or line contact) with the bottom of the filter during most of the filter insertion process, and guides the filter towards the lower and upper mounts in a stable position can do.

  Furthermore, the vehicle air conditioner according to the present invention may be provided with an in-opening guide portion for removing the filter from the air passage (claim 4). Here, the upper edge of the attachment / detachment opening located below the upper guide portion is connected by a surface (flat surface or curved surface) to the upper guide portion. Therefore, when the filter in the attached state is removed, the attachment / detachment opening side of the filter is guided by the surface of the guide in the opening, and the filter can be removed easily and smoothly.

  The present invention having the above configuration enables downsizing of the vehicle air conditioner, enhances the guide function when attaching and detaching the filter, can stabilize the posture of the filter in the filter attaching and detaching process, and is attached to the guide portion Thus, it is possible to realize a vehicle air conditioner capable of easily removing the filter.

It is a figure for demonstrating the cross-sectional schematic structure of the vehicle air conditioner which concerns on this invention. It is a perspective view for demonstrating schematic structure of the filter with which the air conditioning apparatus for vehicles shown in FIG. 1 is mounted | worn. It is a figure for demonstrating the cross-sectional schematic structure in the guide part vicinity of the vehicle air conditioner shown in FIG. It is a figure for demonstrating a mode that the air conditioner for vehicles shown in FIG. 1 was attached to the back of the glove box. It is a figure for demonstrating mounting | wearing of the filter to the guide part of the vehicle air conditioner shown in FIG. It is a figure for demonstrating the cross-sectional schematic structure in the opening part vicinity in the vicinity of the opening part for attachment or detachment formed in the air conditioning system for vehicles shown in FIG. It is a figure for demonstrating the modification of the guide part in the vehicle air conditioner shown in FIG. It is a figure which shows the example of the cross-sectional schematic structure of the conventional vehicle air conditioner. It is a figure for demonstrating the attachment or detachment of the filter in the conventional vehicle air conditioner shown in FIG. It is a figure for demonstrating the relationship of the rotating shaft of a barrel type intake door, and an upper guide part in the case of using a barrel type intake door in the conventional vehicle air conditioner shown in FIG.

  Hereinafter, a vehicle air conditioner according to the present invention will be described with reference to the drawings.

<< Overall Schematic Configuration of Vehicle Air Conditioner >>
The vehicle air conditioner 10 shown in FIG. 1 is provided in the case 11 for attaching and detaching the case 11, an air passage 12 formed inside the case 11, and a filter 20 (see FIG. 2) attached to the air passage 12. It has the opening part 13 for attachment or detachment, the guide part 14 for guiding the filter 20, and the air blower 15 is arrange | positioned by the downward direction of the guide part 14 further.

  The air passage 12 has an outside air intake 121 for taking in air outside the vehicle and an inside air intake 122 for taking in air in the vehicle. The guide portion 14 has an upper guide portion 141 disposed on the upper side and a lower guide portion 142 disposed on the lower side. The air passage 12 has an internal vent (bellmouth) 123 for guiding the air having passed through the guide portion 14 to the blower 15.

  The air conditioner 10 for vehicles is arrange | positioned by the advancing direction forward of a glove box, for example. In this case, attachment of the filter 20 is performed before attaching the glove box to the instrument panel (the glove box is removed for filter replacement).

  In FIG. 1, reference numeral 401 described on the upper right of the opening 13 is the back wall of the glove box 40. The upper edge of the glove box back wall 401 is disposed slightly above the upper edge 131 of the opening for attachment and on the indoor side, and the lower edge (not shown) of the glove box back wall 401 is It is disposed below the lower edge 132 of the opening for attachment and detachment. That is, the distance between the upper edge 131 and the lower edge 132 of the attachment / detachment opening is formed wider than the thickness of the filter 20, and the filter 20 can be attached / detached smoothly.

<Intake door>
As shown in FIG. 1, in the vicinity of the outside air intake 121 and the inside air intake 122, a barrel type intake door (hereinafter referred to as intake door) 30 is disposed. The intake door 30 has a rotary shaft 301, a door peripheral wall 302 formed of a curved surface having the rotary shaft 301 as a central axis, and a fan-shaped peripheral wall support portion 303 interposed between the door peripheral wall 302 and both ends of the rotary shaft 301. (The caulking portion of the peripheral wall support portion 303 is connected to the rotating shaft 301).

  Therefore, the door peripheral wall 302 slides in the vicinity of the outside air intake 121 and the inside air intake 122 as the intake door 30 rotates. When the door peripheral wall 302 blocks the outside air intake 121, the opening ratio of the inside air intake 122 is maximized, and the blower 15 can take in air from the inside air intake 122. The air thus taken in passes through the inside of the door peripheral wall 302 and then passes through the filter 20 mounted on the guide portion 14, the internal vent (bell mouth) 123 and the blower 15. The air having passed through the blower 15 is further cooled by flowing through an evaporator (not shown).

  When the door peripheral wall 302 blocks the inside air intake port 122, the opening ratio of the outside air intake port 121 is maximized, and the air taken in from the outside air intake port 121 by the blower 15 flows to the evaporator. Thus, the intake door 30 switches the inside air circulation mode or the outside air intake mode.

<Guide section>
The guide portion 14 is for mounting the filter 20 so as to intersect (typically, be substantially orthogonal) with the ventilation direction of the air passage 12. The cross-sectional shape of the wall portion of the air passage 12 in the vicinity of the guide portion 14 is substantially rectangular. A mounting opening 13 is disposed on one side (right side in FIG. 1) of the substantially rectangular shape, and the inner wall of the air passage 12 on the side facing the mounting opening 13 is an opposing wall 113. The left and right sides of the filter insertion direction are the side walls of the air passage 12.

  An upper guide portion 141 and a lower guide portion 142 are formed inside the left and right side walls. As shown in FIG. 3, the upper guide portion 141 is disposed from the side of the opposing wall 113 toward the upper side of the opening 13 for attachment / detachment. On the other hand, the lower guide portion 142 is disposed from the opposing wall 113 side to the lower edge portion 132 side of the opening / closing portion.

  The upper guide portion 141 includes at least an upper mounting portion 141a in the vicinity of the opposing wall 113, a first upper track portion 141b disposed from the upper mounting portion 141a toward the mounting / demounting opening 13, and a first upper portion. And a second upper track portion 141c disposed from the track portion 141b to the attachment / detachment opening 13 side.

  Most of the upper guide portion 141 in the region from the facing wall 113 to the vicinity of the rotation shaft 301 is configured by the second upper track portion 141 c. The second upper track portion 141c is longer than the first upper track portion 141b, and has a length from the boundary with the first upper track portion 141b (upper guide top 141t) to at least the vicinity of the rotation shaft 301 of the intake door. (The length of the component of the guide portion 14 is the length in the attachment / detachment direction of the filter 20).

  The lower guide portion 142 has a lower mounting portion 142a disposed from the opposite wall 113 side to a substantially intermediate region between the opposite wall 113 and the mounting / demounting opening 13, and a lower mounting portion 142a from the lower mounting portion 142a. It has a lower track portion 142b disposed to the lower edge 132 side. The boundary region (lower guide central portion 142 c) between the lower mounting portion 142 a and the lower track portion 142 b is disposed substantially directly below the rotation shaft 301. The lower guide portion 142 is formed to be convex upward, and the angle formed by the lower mounting portion 142a and the lower track portion 142b is larger than 180 degrees on the upper side (θ1 in FIG. 3) as shown in FIG. The lower track portion 142b is substantially parallel to the second upper track portion 141c.

  The upper mounting portion 141a and the lower mounting portion 142a are disposed substantially in parallel. The distance between the first upper track portion 141b and the lower mounting portion 142a extends toward the mounting opening 13 while the distance between the second upper track portion 141c and the lower mounting portion 142a is the mounting opening It narrows towards the 13 side. That is, the distance between the upper guide portion 141 and the lower mounting portion 142a is the largest at the upper guide top portion 141t. Further, the distance between the upper guide portion 141 and the lower guide portion 142 in the vicinity of the rotary shaft 301 is substantially equal to the distance between the upper mounting portion 141 a and the lower mounting portion 142 a.

<Filter>
As shown in FIG. 2, the filter 20 forms a frame whose outline shape in plan view is substantially rectangular. The four walls of the frame are opposed to the first side wall 201 and the second side wall 202 forming both side walls, the grip side wall 203 where the operator grips the filter at the time of attachment and detachment, and the grip side wall 203 Back side wall portion 204. The filter 20 holds a filter body 21 in a frame.

  The thickness of the filter 20 (the heights of the first side wall portion 201 and the second side wall portion 202) is slightly shorter than the distance between the upper mounting portion 141a and the lower mounting portion 142a. The bottom surface 201a of the first side wall portion has a rectangular shape in which the thickness of the first side wall portion 201 is a short side, and the long side is substantially equal to the length of the first side wall portion 201, and the upper surface of the first side wall portion The 201b also has a similar rectangular shape. The same applies to the bottom surface 202a and the top surface 202b of the second side wall.

  The outer side of the grip side wall portion 203 forms a grip outer wall 203a, and the inner side forms a grip inner wall 203b. The grip outer wall 203 a and the grip inner wall 203 b are separated by a groove 203 c on the upper surface side of the grip side wall 203. On the other hand, on the bottom surface 203 d side of the grip portion side wall portion 203, the grip portion outer wall 203 a and the grip portion inner wall 203 b are integrally formed. The upper surfaces of the grip outer wall 203a and the grip inner wall 203b are located on substantially the same plane as the upper surface 201b of the first side wall (and the upper surface 202b of the second side wall).

  The bottom surface 203 d of the grip side wall portion is positioned below the bottom surface 201 a of the first side wall portion (and the bottom surface 202 a of the second side wall portion). The bottom surface 201a of the first side wall portion and the bottom surface 202a of the second side wall portion are connected by a curved surface to the bottom surface 203d of the side wall portion of the gripping portion in the vicinity of the side wall portion 203 of the gripping portion.

<< Detaching filter >>
The vehicle air conditioner 10 is disposed at the back (forward in the traveling direction) of the glove box 40 provided in the instrument panel 50. When the glove box back wall 401 is removed, as shown in FIG. 4, the mounting / removal opening 13 of the vehicle air conditioner 10 and the case 151 for housing the blower 15 can be seen. The operator must attach and detach the filter to the opening 13 for attachment and detachment that can be seen further back in the glove box back wall 401. FIG. 5 is a view for explaining this attachment / detachment.

<At the time of filter insertion>
As shown in FIG. 5A, the filter 20 is inserted into the opening 13 for attachment and detachment. Then, the bottom surface 201a of the first side wall portion and the 202a of the second side wall portion in the back side wall portion 204 of the filter 20 make point contact with the upper surface of the lower track portion 142b in the vicinity of the opening 13 for attachment.

  At this time, in the filter 20, a play (arrow X0 direction in FIG. 5A) which can move up and down is generated on the grip side wall 203 side with the back side wall 204 as a fulcrum. Between the following two directions. That is, the insertion direction is a direction (arrow X1 in FIG. 5A) intersecting the upper surface of the lower track portion 142b, and an arrow in a direction substantially parallel to the upper surface of the lower track portion 142b (FIG. 5A) X2) and between.

  Thus, the guide portion 14 can have a width at the insertion angle at the beginning of the insertion of the filter 20. The worker may insert the filter 20 within the range of this width, so the filter 20 can be easily inserted even in a narrow space such as the back of the glove box.

  In addition, the filter 20 at the beginning of insertion is supported at both ends in the insertion direction (near the grip side wall 203 and the back side wall 204), and the posture is stable. Therefore, the operator only holds the grip side wall portion 203 and maintains the insertion direction of the filter 20 within the range shown by the arrows X1 and X2 in FIG. 5 (a). It can be inserted into the top (filter 20 can be easily inserted).

  If the filter 20 is further inserted, as shown in FIG. 5B, the bottom surface 201a of the first side wall and the bottom surface 202a of the second side wall of the filter 20, and the top surface of the lower track portion 142b Surface contact. Therefore, the insertion direction of the filter 20 can be substantially converged on the inclination (the direction of the arrow X2) of the lower side track portion 142b. That is, the vehicle air conditioner 10 can enhance the guide function of the guide portion 14 (an operator can easily insert the filter 20).

<During filter insertion>
As shown in FIG. 5C, the center of gravity G of the filter 20 is located on the lower track portion 142b until the filter 20 is inserted into the guide portion 14 for about 70 to 80%. At this time, since the bottom surface 201a of the first side wall and the bottom surface 202a of the second side wall of the filter 20 are in surface contact with the upper surface of the lower track 142b, the filter 20 is stable on the lower track 142b. doing. In addition, since the upper surface 201b of the first side wall and the upper surface 202b of the second side wall of the filter 20 are in surface contact with the lower surface of the first upper track portion 141b, the filter 20 has its insertion direction It converges (converges in the X2 direction).

  At this time, the force acting on the filter 20 is the force of the worker inserting the filter 20 and the gravity acting on the gravity center point G of the filter 20 and the filter 20 on the lower side track portion 142 b to the opening 13 for attachment / detachment Two forces of force to move, these two forces are 180 degrees different in direction. Therefore, the force for inserting the filter 20 can not be changed in direction by the gravity acting on the gravity center point G, and the operator can easily insert the filter 20.

  The space between the back side wall 204 and the lower mounting portion 142a continues to increase until the back side wall 204 reaches the upper guide top 141t by the insertion of the filter 20. At this time, the center of gravity G of the filter 20 is located closer to the opening / closing portion 13 than the lower guide central portion 142c, and the grip portion side wall portion 203 does not move up and down by gravity (FIG. 5C) ). Therefore, the operator can insert the filter 20 smoothly.

<Change in filter insertion direction>
When the filter 20 is continuously inserted, the back side wall portion 204 eventually passes the upper guide top portion 141t, and then contacts the first upper track portion 141b as shown in FIG. 5 (d). Then, the insertion direction of the filter 20 changes from the X2 direction to the X1 direction (the back side wall portion 204 approaches the lower mounting portion 142a, and the grip side wall portion 203 rises).

  At this time, the center of gravity G of the filter 20 is still located on the lower track portion 142b, and the change in the insertion direction of the filter 20 is defined by the first upper track portion 141b. It is not due to the acting gravity. Therefore, vertical movement is unlikely to occur in the insertion direction of the filter 20. Of course, the grip inner wall 203b is still located outside the upper edge 131 of the mounting / demounting opening.

  When the back side wall portion 204 passes the first upper track portion 141b and reaches the upper mounting portion 141a as shown in FIG. 5E, the center of gravity G of the filter 20 is the lower guide central portion 142c. It moves to the opposing wall 113 side more than. Then, the bottom surface 201a of the first side wall and the bottom surface 202a of the second side wall of the filter 20 are in contact with the lower mounting portion 142a (the insertion direction of the filter 20 changes from the X2 direction to the X1 direction). At this time, the upper edge 131 of the opening for attachment / detachment is positioned inside the groove 203 c of the side wall of the grip.

<Completion of filter installation>
Further, when the filter 20 is inserted and the back side wall portion 204 is positioned between the upper mounting portion 141a and the lower mounting portion 142a as shown in FIG. 5 (f) and abuts against the opposing wall 113 (or approximately When it comes into contact), the mounting operation of the filter 20 is completed.

  At this time, the upper edge 131 of the opening for attachment / detachment is located inside the groove 203c of the side wall of the attachment for holding, and the holding outer wall 203a of the side wall of the attachment for holding It almost abuts on the outer surface. Alternatively, the grip outer wall 203 a may be configured to close the attachment / detachment opening 13 (to be a lid member of the attachment / detachment opening 13).

<Filter removal>
Removal of the filter 20 is performed as follows. The operator grips the grip side wall portion 203 and removes the filter 20 from the guide portion 14. At the beginning of removal, the position of the back side wall portion 204 is regulated by the upper mounting portion 141a and the lower mounting portion 142a, so the filter 20 slides on the lower mounting portion 142a and moves to the mounting opening 13 (Reverse direction to arrow X1).

  The center of gravity G of the filter 20 is attached or detached from the lower guide central portion 142c immediately before the back side wall portion 204 is pulled out of the upper attachment portion 141a (FIG. 5 (e)) or when it is pulled out (FIG. 5 (d)). It moves to the opening 13. Then, the back side wall portion 204 and the lower surface of the upper mounting portion 141a begin to slide.

  By the way, as shown in FIG. 6, an in-opening guide portion 133 directed to the upper guide portion 14 is formed inside the upper edge portion 131 of the attachment / detachment opening. The in-opening guide surface (a surface having one or both of a flat surface and a curved surface) 133a of the in-opening guide portion is formed from the upper guide portion 14 toward the end of the upper edge portion 131 without any substantial step. ing.

  Therefore, when the back side wall portion 204 and the lower surface of the upper mounting portion 141a begin to slide, the grip portion inner wall 203b of the filter 20 slides on the upper surface thereof with the in-opening guide surface 133a of the in-opening guide portion It smoothly moves toward the lower side of the upper edge 131 of the opening. Thus, the removal of the filter 20 can be facilitated.

  The in-opening guide surface 133a of the in-opening guide portion may be formed at least in the vicinity of the left and right side walls in the vicinity of the mounting and dismounting opening 13 (of course, formed continuously between the left and right side walls of the mounting and dismounting opening 13) May).

  Furthermore, after the back side wall portion 204 passes near the upper guide top portion 141t (FIG. 5C), the bottom surface 201a of the first side wall portion and the bottom surface 202a of the second side wall portion of the filter 20 are lower track portions 142b. And the upper surface 201b of the first side wall and the upper surface 202b of the second side wall of the filter 20 are in contact with the second upper track portion 141c. Therefore, the filter 20 is smoothly guided and removed by the lower track portion 142 b and the second upper track portion 141 c.

  Further, when the back side wall portion 204 passes near the lower guide central portion 142c, as shown in FIG. 5B, the operator can change the bottom surface 201a of the first side wall portion of the filter 20 and the bottom surface of the second side wall portion The filter 20 can be removed smoothly as the lower track portion 142b contacts the lower track portion 142b. Thus, as the filter 20 is removed, the removal angle increases.

  When the back side wall portion 204 approaches the attachment / detachment opening 13, the filter 20 is in the state as shown in FIG. 5 (a). Therefore, the operator holds the grip side wall 203 and removes the filter 20 while selecting the direction in which the filter 20 can be easily removed within the range indicated by the arrows X1 and X2 in FIG. 5A. Can.

<Modification>
The air conditioning system for a vehicle according to the present invention is further provided with a third upper track portion 141d on the side of the opening 13 for attachment / detachment than the second upper track portion 141c as shown in FIG. It is also good.

  An upper guide portion inflection point 141 e is disposed in the boundary region between the second upper track portion 141 c and the third upper track portion 141 d. The upper guide portion inflection point 141 e is preferably disposed substantially directly above and near the rotation shaft 301 (not shown) of the intake door substantially above the lower guide central portion 142 c. The distance between the upper guide inflection point 141e and the lower guide central portion 142c is substantially equal to the distance between the upper mounting portion 141a and the lower mounting portion 142a. As shown in FIG. 7 (θ 2 in FIG. 7), the third upper track portion 141 d has a crossing angle with the second upper track portion 141 c at the lower side larger than 180 degrees (for example, 187 degrees). The upper track portion 141d of 3 is disposed, for example, substantially in parallel with the lower mounting portion 142a.

  The opening side end 141 f of the third upper track portion 141 d is disposed on the upper side of the upper edge 131 of the attachment / detachment opening, and the third upper track portion 141 d and the lower guide portion 142 The interval is gradually narrowed from the side of the opening / closing opening 13 toward the upper guide inflection point 141e (near the lower guide central portion 142c).

  Therefore, the guide portion 14 having the third upper track portion 141 d can more smoothly guide the filter 20 inserted from the attachment / detachment opening 13 so that the filter 20 can be attached to the air passage 12 at a predetermined position. The filter 20 mounted at the predetermined position can be taken out more smoothly.

  The vehicle air conditioner according to the present invention described above can be appropriately modified and implemented without changing the purpose thereof. For example, the lower mounting portion and the lower track portion may not be formed continuously. Even in this case, geometrical intersections and intersection angles exist in the three-dimensional space between the lower attachment and the lower track. The same applies to the relationship between the second upper track portion and the third upper track portion.

  The vehicle air conditioner according to the present invention can be manufactured industrially and can be a target of commerce, so it is an invention that can be industrially used with economic value.

DESCRIPTION OF SYMBOLS 10 Air-conditioner for vehicles 11 Case 12 Air passage 13 Detaching opening part 20 Filter 113 Opposite wall 131 Upper edge part 133 of attaching / detaching opening inner side guide part 141 Upper guide part 141a Upper fitting part 141b 1st upper track part 141c Second upper track portion 141d Third upper track portion 142 Lower guide portion 142a Lower mounting portion 142b Lower track portion

Claims (3)

With the case,
An air passage formed inside the case;
An opening for attaching and detaching a filter formed in the case and installed to cross the air passage;
A lower guide portion which is formed from an opposing wall of the air passage facing the mounting opening to the mounting opening and which guides the mounting and demounting of the filter on the lower side of the filter;
An upper guide portion formed on the upper side of the lower guide portion for guiding attachment and detachment of the filter;
A lower mounting portion which is formed on the opposite wall side of the lower guide portion and which restricts the mounting position of the filter;
A lower track formed so that the crossing angle at the upper side with the lower mounting portion is greater than 180 degrees on the side of the lower opening than the lower mounting portion in the lower guide portion. ,
An upper mounting portion which is formed on the opposite wall side of the upper guide portion and which restricts the mounting position of the filter;
The space between the upper mounting portion and the lower mounting portion is formed closer to the mounting opening side than the upper mounting portion of the upper guide portion so as to expand from the upper mounting portion side toward the mounting opening side. A first upper track portion,
In the upper guide portion, the distance between the lower mounting portion is closer to the mounting opening side than the first upper race portion toward the mounting opening side from the first upper race portion. A second upper track formed narrowly and substantially in parallel with the lower track ;
An upper edge which is an upper side of the attaching / detaching opening is located lower than the upper guide portion,
The upper guide portion and the upper edge portion are connected by a flat surface and / or a curved surface, and when the filter is removed from the air passage, the attachment / detachment opening side of the filter is connected to the upper edge portion. An air conditioner for a vehicle, comprising: an in-opening guide portion for guiding . In the vehicle air conditioner according to claim 1,
The upper guide portion is further formed on the attachment / detachment opening side with respect to the second upper track portion so that the crossing angle at the lower side with the second upper track portion is larger than 180 degrees. An air conditioner for a vehicle comprising a third upper track portion. The vehicle according to claim 1 or 2, wherein the lower attachment portion and the lower track portion of the lower guide portion have substantially the same length from the opposite wall side to the attachment / detachment opening side. Air conditioner.

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