JP6295134B2 - Air conditioner for vehicles - Google Patents

Description

  The present invention relates to a vehicle air conditioner for air-conditioning and anti-fogging of a windshield in a vehicle.

  The vehicle air conditioner mixes the cool air cooled by the evaporator and the warm air heated by the heater core in the mixing chamber to produce air conditioning air, and the air conditioning air is blown out to the passenger compartment to comfort the passenger. And anti-fogging windshields and side windows. Air conditioning by a vehicle air conditioner can be broadly classified into an inside air circulation mode in which air inside the vehicle (inside air) is circulated by a blower of the vehicle air conditioner, and air (outside air) taken from outside the vehicle by a fan. There is an outside air intake mode in which heating and cooling are performed.

  The vehicle air conditioner switches between taking in outside air and taking in inside air with an intake door, and a blower of the vehicle air conditioner arranged downstream of the intake door blows air to the evaporator. A filter is disposed between the intake door and the blower, and this 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 manufacturing process of the vehicle, and is cleaned or replaced during maintenance inspection. Therefore, it is desirable that the filter can be easily attached and detached.

  However, the vehicle air conditioner is generally disposed in a narrow space near the driver's seat and the passenger seat, and the opening for attaching / detaching the filter is disposed in a narrow space near the instrument panel, the glove box, and the like. . Such an arrangement restriction causes a restriction on the filter attaching / detaching work. Furthermore, in order to reduce ventilation resistance and noise, it is necessary to secure a certain distance between the filter and the blower, which may cause restrictions on the arrangement of the attachment / detachment openings. Therefore, the workability of attaching / detaching the filter may be further reduced.

  In order to realize a vehicle air conditioner that can eliminate or reduce such workability of attaching / detaching a filter, for example, Patent Document 1 discloses a lower guide portion and an upper portion that are disposed relative to each other in order to facilitate attachment / detachment of a filter. The vehicle air conditioner provided with the guide part is disclosed.

  As shown in FIG. 8, the vehicle air conditioner 1 has a shelf-like lower guide portion 5 that extends horizontally in order to place the lower surface portion of the filter 3. The upper guide portion 6 is disposed in the vicinity of the back side (the side facing the attachment / detachment opening) and is mounted between the attachment guide portion 6a for holding the filter 3 and between the attachment guide portion 6a and the attachment / detachment opening. An inclination guide portion is provided for restricting the attachment / detachment angle of the filter 3.

  The mounting guide portion 6 a is disposed in parallel with the lower guide portion 5, and the distance from the lower guide portion 5 is slightly wider than the thickness of the filter 3. The inclination guide part includes a first inclination guide part 6b and a second inclination guide part 6c. The second inclination guide portion 6c is gradually separated from the lower guide portion 5 toward the attachment / detachment opening 7 from the mounting guide portion 6a (higher toward the upper side), and the first inclination guide portion 6b is The apex 6t of the second inclination guide part 6c (the apex 6t of the upper guide part) is gradually approaching the lower guide part 5 toward the attachment / detachment opening 7 (the height is lowered). That is, the inclination guide portions (the first inclination guide portion 6b and the second inclination guide portion 6c) of the upper guide portion 6 are formed to be convex upward.

  Therefore, as shown in FIG. 9A, when the filter 3 is inserted from the attachment / detachment opening 7, the insertion angle can be inclined to the inclination angle of the first inclination guide portion 6b (oblique of the attachment / detachment opening 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. 9C), the subsequent insertion angle is defined by the second tilt 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)). When the filter tip 3a is further inserted between the mounting guide 6a and the lower guide 5 of the upper guide, the filter tip 3a reaches the back end of the mounting guide 6a (FIG. 9 ( f)) Installation of the filter 3 is completed (the filter 3 is held at a predetermined position in the air passage). The filter 3 is removed in the reverse procedure.

JP 2012-236437 A

  However, in the vehicle air conditioner 1, the upper guide portion 6 is formed so as to protrude upward, and the distance between the lower guide portion 5 and the apex 6t of the upper guide portion is increased (because the upper guide portion 6 is increased). The downsizing of the vehicle air conditioner 1 can be hindered.

  Further, when the barrel type intake door 2 ′ having lower ventilation resistance than the flat plate type intake door 2 is adopted to reduce the size of the vehicle air conditioner 1 (FIG. 10), the upper side of the barrel type intake door rotating shaft 2 c is The interval with the guide part 6 (especially the 1st inclination guide part 6b) must be narrowed. However, since the position of the upper guide portion 6 is high, in order to avoid interference between the rotation shaft 2c of the barrel intake door and the upper guide portion 6, the position of the rotation shaft 2c with respect to the attachment / detachment opening 7 must be increased. If it does so, size reduction of a vehicle air conditioner will be inhibited.

  In addition, if the position of the attaching / detaching opening 7 is set low in order to secure the space between the rotating shaft 2c and the upper guide portion 6, the space between the filter 3 and the blower 4 becomes narrow, and the ventilation resistance and ventilation noise increase. To do.

  In the vehicle air conditioner 1, the distance between the lower guide portion 5 and the upper guide portion 6 gradually increases from the attachment / detachment opening portion 7 toward the far side and becomes maximum on the way, and then toward the mounting guide portion 6 a. is decreasing. Therefore, when the filter 3 is inserted, the lower guide portion 5 that can reliably support the filter until the filter tip portion 3a reaches the mounting guide portion 6a is only the vicinity of the detachable opening portion 7a (FIG. 9A). To (d)), the guide function of the lower guide portion 5 is not sufficient.

  That is, until the filter front end portion 3a reaches the mounting guide portion 6a, the filter 3 generates a rotational force F due to gravity with the attachment opening vicinity 7a as a fulcrum. This 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 / detachment) (filter The tip portion 3a acts so as to contact the first tilt guide portion 6b).

  However, as shown in FIG. 9 (b), when the center of gravity 3g of the filter reaches the inside of the opening for attachment / detachment (when the filter tip 3a reaches slightly deeper than the approximate center of the air passage), The direction reverses, and the filter tip 3a tends to descend away from the first inclination guide 6b (the posture of the filter 3 becomes unstable and the filter outer end 3b tends to rise).

However in order to avoid interference with the mounting device and the filter arranged on the periphery of the detachable opening 7 until filter tip 3a reaches the apex 6t of the upper guide portion, not lifted the filter outer end 3b Must do so. Therefore, the operator 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 to the back side from the vicinity of the attaching / detaching opening 7a, so that the rotational force F that raises the filter outer end 3b becomes stronger. At this time, the distance between the attachment / detachment opening vicinity 7a and the filter outer end 3b is shortened, so it is extremely difficult to apply a force that opposes the rotational force F.

  The same applies to the removal of the filter 3, and when the operator attaches / detaches the filter 3, it is necessary to apply not only the force in the attaching / detaching direction of the filter 3 but also the downward force to the filter outer end 3b. Detachment work is not easy.

  Therefore, the present invention can reduce the size of a vehicle air conditioner that attaches and detaches a filter while supporting the bottom surface side of the filter with a wide area such as a lower guide portion (lower 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 according to the present invention (Claim 1) includes a case in which an air passage is formed inside, and a detachment for attaching and detaching a filter that is formed in the case and intersects the air passage. An opening for the filter, a lower guide portion that is formed from the opposing wall of the air passage facing the opening for attachment to the opening for attachment, and guides attachment / detachment of the filter on the lower side of the filter, and attachment / detachment of the filter on the upper side of the filter An upper guide portion for guiding is provided.

  Here, the lower guide portion includes a lower mounting portion that is formed on the opposing wall side and restricts the mounting position of the filter, and a lower track portion that is formed on the attachment / detachment opening side, and the lower mounting portion The lower track portion is formed so that the upper crossing angle is larger than 180 degrees.

  Accordingly, the detachable opening side of the lower track portion is positioned below the lower mounting portion, and therefore when the filter is inserted from the detachable opening portion, the lower track portion 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 and restricts the mounting position of the filter. On the detachable opening side of the upper mounting portion, the distance from the lower mounting portion is from the upper mounting portion side. A first upper track portion formed so as to expand toward the attachment / detachment opening portion side, and an interval from the lower attachment portion closer to the attachment / detachment opening portion side than the first upper track portion is a first upper side. There is provided a second upper track portion formed so as to narrow from the track portion side toward the attachment / detachment opening portion side.

  Therefore, when the filter is inserted from the opening for attachment and detachment and the tip of the filter reaches the second upper track portion, the second upper track portion makes surface contact (or line contact) with the upper portion of the filter, and the filter is It is possible to guide toward the first upper track portion on the opposite wall side in a stable posture. When the filter tip reaches the first upper track part in this way, the first upper track part can push the filter tip part downward toward the lower track part and eventually the filter tip part smoothly moves to the upper mounting part. Can lead.

  In the guide portion including the lower guide portion and the upper guide portion, the boundary region (upper guide top portion) between the first upper track portion and the second upper track portion is located on the uppermost side. Here, the upper guide top 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 detachable opening and the opposing wall can be reduced, and for example, the rotation shaft of the intake door can be disposed in the intermediate region. The vehicle air conditioner can be downsized.

  The upper guide portion may further include a third upper track portion closer to the attachment / detachment opening than 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 to be larger than 180 degrees on the lower side of the upper guide portion. And the space | interval of a 3rd upper side track part and a lower side track part is narrowed toward the 2nd upper side track part from the opening part for attachment or detachment. Accordingly, the third upper track portion can smoothly guide the tip portion of the filter inserted from the attachment / detachment opening portion toward the second upper track portion.

The lower mounting portion and the lower track portion may have substantially the same length (length in the filter insertion direction) from the opposing wall side toward the attachment / detachment opening side (claim 1 ). 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 detachable 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 opening for attachment and detachment and the opposing wall, it is just before the filter mounting is completed. Therefore, the lower track portion continues to maintain surface contact (or line contact) with the bottom of the filter in most of the filter insertion process, and guides the filter toward the lower mounting portion and the upper mounting portion in a stable posture. can do.

Furthermore, the vehicle air conditioner according to the present invention may include an in-opening guide portion for removing the filter from the air passage (claim 3 ). Here, the upper edge portion of the opening for attachment / detachment located below the upper guide portion is connected to the upper guide portion by a surface (a plane or a curved surface). Therefore, when removing the filter in the mounted state, the attachment / detachment opening side of the filter is guided by the surface of the guide in the opening, and the filter can be easily and smoothly removed.

  The present invention having the above-described configuration enables miniaturization of the vehicle air conditioner, enhances the guide function when attaching / detaching the filter, stabilizes the posture of the filter in the filter attaching / detaching process, and further attaches to the guide portion. Thus, it is possible to realize a vehicle air conditioner that can easily remove 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 vehicle air conditioner 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 vehicle air conditioner 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 guide vicinity vicinity formed in the attachment opening part vicinity of the vehicle air conditioner 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 a cross-sectional schematic structure of the conventional vehicle air conditioner. It is a figure for demonstrating attachment / detachment of the filter in the conventional vehicle air conditioner shown in FIG. It is a figure for demonstrating the relationship between 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, with reference to the accompanying drawings, a description will be given of the vehicular air conditioning apparatus according to the present invention.

<< 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, the air passage 12 formed inside the case 11, and the filter 20 (see FIG. 2) attached to the air passage 12. The opening / detaching opening 13 and the guide part 14 for guiding the filter 20 are provided, and a blower 15 is disposed below the guide part 14.

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

  The vehicle air conditioner 10 is disposed, for example, in front of the traveling direction of the glove box. In this case, the filter 20 is mounted before the glove box is attached to the instrument panel (the glove box is removed for filter replacement).

  In FIG. 1, 401 described at the upper right of the attaching / detaching opening 13 is a back wall of the glove box 40. The upper edge of the inner wall 401 of the glove box is arranged slightly above the upper edge 131 of the opening for attachment and detachment and on the indoor side, and the lower edge (not shown) of the inner wall 401 of the glove box is The lower opening 132 is disposed below the detachable opening. That is, the interval between the upper edge 131 and the lower edge 132 of the opening for attachment / detachment is formed wider than the thickness of the filter 20, so that the filter 20 can be smoothly attached / detached.

<Intake door>
As shown in FIG. 1, a barrel type intake door (hereinafter referred to as an intake door) 30 is disposed in the vicinity of the outside air inlet 121 and the inside air inlet 122. The intake door 30 includes 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 port 121 and the inside air intake port 122 as the intake door 30 rotates. When the door peripheral wall 302 closes the outside air inlet 121, the opening ratio of the inside air inlet 122 becomes maximum, and the blower 15 can take in air from the inside air inlet 122. The air thus taken flows through the inside of the door peripheral wall 302, and then passes through the filter 20, the internal vent (bell mouth) 123 and the blower 15 attached to the guide portion 14. The air that has passed through the blower 15 is further passed through an evaporator (not shown) to be cooled.

  When the door peripheral wall 302 closes the inside air inlet 122, the opening ratio of the outside air inlet 121 is maximized, and the air taken in from the outside air inlet 121 by the blower 15 flows to the evaporator. In this way, intake door 30 switches between the inside air circulation mode and the outside air intake mode.

<Guide part>
The guide part 14 is for mounting the filter 20 so as to intersect with the ventilation direction of the air passage 12 (typically so as to be substantially orthogonal). The cross-sectional shape of the wall portion of the air passage 12 in the vicinity of the guide portion 14 is substantially rectangular. An attachment / detachment opening 13 is arranged 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 attachment / detachment opening 13 is an opposing wall 113. The left and right sides in the filter insertion direction form 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 facing wall 113 side toward the upper side of the attachment / detachment opening portion 13. On the other hand, the lower side guide part 142 is arrange | positioned from the opposing wall 113 side to the lower edge part 132 side of the opening part for attachment / detachment.

  The upper guide portion 141 includes at least an upper mounting portion 141a in the vicinity of the facing wall 113 side, a first upper track portion 141b disposed from the upper mounting portion 141a toward the detachable opening 13 side, and a first upper side. And a second upper track part 141c disposed on the side of the opening / removal opening 13 from the track part 141b.

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

  The lower guide portion 142 includes a lower mounting portion 142a disposed from the opposing wall 113 side to a substantially intermediate region between the opposing wall 113 and the attaching / detaching opening 13, and an attachment / detachment opening from the lower attaching portion 142a. It has a lower track part 142b disposed over the lower edge part 132 side. A boundary region (lower guide center portion 142 c) between the lower mounting portion 142 a and the lower track portion 142 b is disposed in a direction substantially directly below the rotation shaft 301. The lower guide part 142 is formed so as to protrude upward, and the angle formed by the lower mounting part 142a and the lower track part 142b is larger than 180 degrees on the upper side as shown in FIG. 3 (θ1 in FIG. 3). (For example, 187 degrees), and 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 increases toward the attachment / detachment opening portion 13, while the interval between the second upper track portion 141c and the lower attachment portion 142a is the attachment / detachment opening portion. It narrows toward the 13th side. That is, the distance between the upper guide portion 141 and the lower mounting portion 142a is widest at the upper guide top portion 141t. Further, the interval between the upper guide portion 141 and the lower guide portion 142 in the vicinity of the rotation shaft 301 is substantially equal to the interval between the upper attachment portion 141a and the lower attachment portion 142a.

<Filter>
As shown in FIG. 2, the filter 20 has a frame body whose contour shape in plan view is substantially rectangular. The four wall portions of the frame are opposed to the first side wall portion 201 and the second side wall portion 202 that form both side walls, the grip portion side wall portion 203 on which the operator grips the filter when attaching and detaching, and the grip portion side wall portion 203. This is the back side wall portion 204. The filter 20 holds a filter body (filter element) 21 in the frame.

  The thickness of the filter 20 (the height 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 top surface of the first side wall portion 201b has the same rectangular shape. The same applies to the bottom surface 202a and the top surface 202b of the second side wall portion.

  The outer side of the grip part side wall part 203 forms a grip part outer wall 203a, and the inner side forms a grip part inner wall 203b. The gripping portion outer wall 203 a and the gripping portion inner wall 203 b are separated by a groove 203 c on the upper surface side of the gripping portion side wall portion 203. On the other hand, on the bottom surface 203d side of the grip portion side wall portion 203, the grip portion outer wall 203a and the grip portion inner wall 203b are integrally formed. The upper surfaces of the gripper outer wall 203a and the gripper inner wall 203b are positioned 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 203d of the grip portion side wall portion is positioned below the bottom surface 201a of the first side wall portion (and the bottom surface 202a 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 to the bottom surface 203d of the grip portion side wall portion in the vicinity of the grip portion side wall portion 203 by a curved surface.

<< Removal of filter >>
The vehicle air conditioner 10 is disposed behind (in front of the traveling direction) a glove box 40 provided on the instrument panel 50. When the glove box inner wall 401 is removed, the attachment / detachment opening 13 of the vehicle air conditioner 10 and the case 151 that houses the blower 15 can be seen as shown in FIG. The operator has to attach / detach the filter to / from the opening 13 for attachment / detachment that can be seen further behind the back wall 401 of the glove box. FIG. 5 is a view for explaining this attachment and detachment.

<Initial filter insertion>
As illustrated in FIG. 5A, the filter 20 is inserted into the attachment / detachment opening 13. Then, the bottom surface 201a of the first side wall part and the 202a of the second side wall part in the back side wall part 204 of the filter 20 are in point contact with the upper surface of the lower track part 142b in the vicinity of the detachable opening part 13.

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

  Thus, the guide part 14 can give the width | variety to the insertion angle at the time of the insertion of the filter 20 at the beginning. Since the operator has only to insert the filter 20 within the range of this width, the filter 20 can be easily inserted even in a narrow space such as the back of the glove box.

  In addition, the initial filter 20 is supported at both ends in the insertion direction (near the gripping part side wall 203 and the back side wall 204) and has a stable posture. Therefore, the operator only holds the grip portion side wall portion 203 and maintains the insertion direction of the filter 20 within the range indicated by the arrows X1 and X2 in FIG. It can be inserted into the upper surface (the 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 portion and the bottom surface 202a of the second side wall portion of the filter 20, and the upper surface of the lower track portion 142b, Can be brought into surface contact. Therefore, the insertion direction of the filter 20 can be substantially converged to the inclination of the lower track portion 142b (the direction of the arrow X2). That is, the vehicle air conditioner 10 can enhance the guide function of the guide portion 14 (the 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 part 142b until the filter 20 is inserted into the guide part 14 by about 70 to 80%. At this time, since 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 in surface contact with the upper surface of the lower track portion 142b, the filter 20 is stable on the lower track portion 142b. doing. In addition, since the upper surface 201b of the first side wall portion and the upper surface 202b of the second side wall portion of the filter 20 are in surface contact with the lower surface of the first upper track portion 141b, the insertion direction of the filter 20 is Converge (converge in the X2 direction).

  At this time, the force acting on the filter 20 is the force of the operator who inserts the filter 20 and the gravity point G on the center of gravity G of the filter 20 so that the filter 20 is moved to the detachable opening 13 on the lower track portion 142b. The two forces are the forces to move, and these two forces are 180 degrees different in direction. Therefore, the direction in which the force for inserting the filter 20 is not changed by the gravity acting on the barycentric point G, and the operator can easily insert the filter 20.

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

<Change in filter insertion direction>
If the filter 20 is continuously inserted, the rear side wall portion 204 eventually passes through the upper guide top portion 141t, and then comes into contact with 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 toward the X1 direction (the rear side wall portion 204 approaches the lower mounting portion 142a, and the gripping portion 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, it is difficult for vertical movement to occur in the insertion direction of the filter 20. Of course, the gripping portion inner wall 203b is still located outside the upper edge 131 of the opening for attachment / detachment.

  When the back wall portion 204 passes through the first upper track portion 141b and reaches the upper mounting portion 141a as shown in FIG. 5 (e), the center of gravity G of the filter 20 is the lower guide center portion 142c. Rather than the opposing wall 113 side. Then, 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 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 203c on the side wall of the gripping part.

<Completing filter installation>
Further, when the filter 20 is inserted and the rear side wall portion 204 is positioned between the upper mounting portion 141a and the lower mounting portion 142a and contacts the opposing wall 113 as shown in FIG. When the contact is made), the mounting operation of the filter 20 is completed.

  At this time, the upper edge 131 of the detachable opening is positioned inside the groove 203c of the gripper side wall, and the gripper outer wall 203a of the gripper side wall is located on the upper edge 131 of the detachable opening. Nearly abuts the outer surface. Alternatively, the gripping portion outer wall 203a may be configured to close the detachable opening 13 (becomes a lid member for the detachable opening 13).

<Removing the filter>
The filter 20 is removed as follows. The operator grips the grip portion side wall portion 203 and removes the filter 20 from the guide portion 14. Since the position of the rear side wall portion 204 is initially regulated by the upper mounting portion 141a and the lower mounting portion 142a, the filter 20 slides on the lower mounting portion 142a and moves to the attachment / detachment opening 13. (Reverse direction of arrow X1).

  Immediately before the rear side wall portion 204 is pulled out from the upper mounting portion 141a (FIG. 5 (e)) or the roller (FIG. 5 (d)), the center of gravity G of the filter 20 is attached / detached from the lower guide center portion 142c. It moves to the opening 13 for use. Then, the back side wall portion 204 and the lower surface of the upper mounting portion 141a begin to slide.

  Incidentally, as shown in FIG. 6, an in-opening guide portion 133 facing the upper guide portion 14 is formed inside the upper edge 131 of the detachable opening. The in-opening guide portion (surface having one or both of a flat surface and a curved surface) 133a of the in-opening guide portion has no substantial step and is formed from the upper guide portion 14 toward the end of the upper edge 131. ing.

  Therefore, when the back side wall portion 204 and the lower surface of the upper mounting portion 141a start to slide, the gripping portion inner wall 203b of the filter 20 slides with the inner guide surface 133a of the inner opening guide portion on the upper surface, and is attached and detached. It moves smoothly toward the lower side of the upper edge 131 of the opening. In this way, the removal work of the filter 20 is 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 detachable opening 13 (of course, continuously formed between the left and right side walls of the detachable opening 13). May be.)

  Further, after the back side wall portion 204 has passed 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 become the lower track portion 142b. In addition, 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 part 141c. Accordingly, the filter 20 is smoothly guided and removed by the lower track portion 142b and the second upper track portion 141c.

  Further, when the back side wall portion 204 passes near the lower guide central portion 142c, as shown in FIG. 5B, the operator can use 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 so that 202a contacts the lower track portion 142b. As the filter 20 is removed in this manner, the removal angle is expanded.

  When the back side wall portion 204 approaches the detachable opening portion 13, the filter 20 is in a state as shown in FIG. Accordingly, the operator removes the filter 20 while holding the gripping portion side wall 203 and selecting the direction in which the filter 20 is easily removed within the range indicated by the arrows X1 and X2 in FIG. 5A. Can do.

<Modification>
In the vehicle air conditioner according to the present invention, the guide portion 14 is further provided with a third upper track portion 141d on the side of the detachable opening 13 with respect to the second upper track portion 141c as shown in FIG. Also good.

  An upper guide portion inflection point 141e is disposed in a boundary region between the second upper track portion 141c and the third upper track portion 141d. This upper guide portion inflection point 141e is preferably disposed substantially above and below the lower guide center portion 142c, substantially directly below and in the vicinity of the rotary shaft 301 (not shown) of the intake door. The interval between the upper guide portion inflection point 141e and the lower guide central portion 142c is substantially equal to the interval between the upper mounting portion 141a and the lower mounting portion 142a. As shown in FIG. 7 (θ2 in FIG. 7), the third upper track portion 141d has a crossing angle with the second upper track portion 141c larger than 180 degrees on the lower side (for example, 187 degrees, 3 upper track part 141d is arranged substantially parallel to lower mounting part 142a, for example.

  The opening-side end portion 141f of the third upper track portion 141d is disposed above the upper edge 131 of the attachment / detachment opening portion, and the third upper track portion 141d and the lower guide portion 142 are connected to each other. The interval gradually decreases from the attaching / detaching opening 13 side toward the upper guide inflection point 141e (in the vicinity of the lower guide central portion 142c).

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

  The vehicle air-conditioning apparatus according to the present invention described above can be implemented with appropriate modifications without changing the gist thereof. For example, the lower mounting portion and the lower track portion may not be formed continuously. Even in this case, a geometrical intersection and a crossing angle exist in the three-dimensional space between the lower mounting portion and the lower track portion. The same applies to the relationship between the second upper track portion and the third upper track portion.

  Since the vehicle air conditioner according to the present invention can be manufactured industrially and can be used as an object of commercial transactions, it is an invention that can be used industrially with economic value.

DESCRIPTION OF SYMBOLS 10 Vehicle air conditioner 11 Case 12 Air passage 13 Removable opening part 20 Filter 113 Opposite wall 131 Upper edge part 133 of opening part for attachment / detachment Opening guide part 141 Upper guide part 141a Upper mounting part 141b First 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)

Case and
An air passage formed inside the case;
An attachment / detachment opening for attaching / detaching a filter that is formed in the case and is attached to intersect the air passage;
A lower guide portion that is formed from an opposing wall facing the attachment / detachment opening in the air passage to the attachment / detachment opening, and guides attachment / detachment of the filter on a lower side of the filter;
An upper guide part that is formed on the upper side of the lower guide part and guides the attachment and detachment of the filter;
A lower mounting portion that is formed on the opposite wall side of the lower guide portion and restricts the mounting position of the filter;
A lower track portion formed so that an intersecting angle on the upper side with the lower mounting portion is larger than 180 degrees on the detachable opening side of the lower guide portion relative to the lower mounting portion; ,
Is formed on the opposite wall of the upper guide portion, and an upper mounting portion for regulating the mounting position of the Fi le data,
The upper guide portion is formed closer to the attachment / detachment opening portion than the upper attachment portion, and the distance from the lower attachment portion is widened from the upper attachment portion side toward the attachment / detachment opening portion side. A first upper track portion;
Of the upper guide portion, the detachable opening portion side is closer to the detachable opening portion than the first upper track portion, and the distance from the lower mounting portion is directed from the first upper track portion side to the detachable opening portion side. A second upper track portion formed to narrow ,
The vehicular air conditioner characterized in that the lower mounting portion and the lower track portion of the lower guide portion have substantially the same length from the opposing wall side toward the detachable opening portion . In the vehicle air conditioner according to claim 1,
The upper guide portion is further formed closer to the detachable opening than the second upper track portion so that a crossing angle on the lower side with the second upper track portion is larger than 180 degrees. A vehicle air conditioner comprising a third upper track portion. The vehicle air conditioner according to claim 1 or 2 ,
The upper edge that is the upper side of the attachment / detachment opening is located below the upper guide part,
The upper guide portion and the upper edge portion are connected to both or one of a plane and a curved surface, and when the filter is removed from the air passage, the detachable 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.

Images