JP4389715B2 - Blower unit - Google Patents

Description

  The present invention relates to a blower unit including a filter member.

  In a blower unit of a vehicle air conditioner that inserts a filter member from an opening formed in a case side wall of the blower unit, when the distance between the air suction port of the blower fan mounted in the blower unit and the filter member is short The wind speed distribution of the air passing through the filter member is biased, and the ventilation resistance of the filter member is increased. As a result, there arises a problem that the blown-out air volume of the blower unit is reduced and the noise generated from the blower unit is increased.

  If the filter member is arranged at a higher position in the blower unit in order to increase the distance between the air suction port of the blower fan and the filter member, the opening for inserting the filter member also matches the mounting position of the filter member. It will be formed at a higher position on the side wall of the blower case.

  However, in a semi-centered vehicle air conditioner in which the blower unit is offset on the passenger seat side, the glove box is placed on the side upper part of the blower unit. If the opening for insertion is formed at a higher position on the side wall of the blower case, there is a problem that the filter member interferes with the glove box when the filter member is inserted.

  On the other hand, Patent Document 1 describes a blower unit in which an auxiliary internal air intake provided in a blower case side wall is also used as an opening for inserting a filter.

  FIG. 6A is a schematic cross-sectional view showing the configuration of the blower unit 100 described in Patent Document 1, and FIG. 6B is a view of the filter member F inserted into the blower unit 100 as viewed obliquely from above. is there. In this blower unit, the mounting position of the filter member F is shifted upward with respect to the auxiliary internal air intake 101 into which the filter member F is inserted.

  When the filter member F is assembled to the blower unit 100, as shown by a two-dot chain line in FIG. 6A, the filter member F is inserted into the auxiliary internal air intake port 101, and the front end portion 105 of the filter member F is moved. In addition, the gripping portion 106 shown in FIG. 6B is supported in the switching box 102 while being mounted on and supported by a plate-like shelf portion 103 provided so as to protrude from the inner wall of the switching box 102 where the filter member F is mounted. By holding it by hand and lifting the rear end of the filter member F, the locking portion 104 and the projection 107 in the switching box 102 are engaged, and the filter member F is fixed at the mounting position in the switching box 102.

According to the blower unit described in Patent Document 1, even if the distance between the mounting position of the filter member and the air suction port of the blower fan is separated, the mounting position of the filter member F is inserted into the filter member F. Therefore, the filter member can be inserted from the auxiliary inner air intake port 101 formed below the mounting position of the filter member, and the filter member is a glove box or the like. It is possible to prevent the problem of interference.
JP-A-9-109660

  In the blower unit described in Patent Document 1, the tip portion 105 of the filter member F is mounted in the switching box 102 by placing it on the shelf portion 103. However, since the shelf 103 is formed forward in the insertion direction of the filter member F in the switching box 102, the operator cannot confirm the position of the shelf 103 during the insertion work. .

  The present invention has been made in view of such problems, and in a blower unit in which the mounting position of the filter member is shifted upward with respect to the opening for inserting the filter member, the assembly workability of the filter member The purpose is to improve.

In order to solve the above problems, in the invention described in claim 1, an inside air introduction port (4) communicating with the vehicle interior and an outside air introduction port (5) communicating with the outside of the vehicle interior are formed, and the inside air introduction port (4) A blower case in which an inside / outside air switching means (7) for selectively opening and closing the outside air introduction port (5) and a blower fan for sucking air from the inside air introduction port (4) or the outside air introduction port (5) ( 2, 3) and the blower case (2, 3), between the inside / outside air switching means (7) and the blower fan, and from the inside air introduction port (4) or the outside air introduction port (5) 2, 3) a filter member (8) through which air that has flowed in passes, a filter member insertion opening (9) formed in the blower case (2, 3) and into which the filter member (8) is inserted, And a lid member (6) for closing the filter member insertion opening (9). In the blower unit mounted at the mounting position (A) where the filter member (8) is closer to the inside / outside air switching means (7) side than the filter member insertion opening (9), the blower case (2, 3) A support part (12b) formed forward of the filter member (8) in the insertion direction and supporting the filter member (8) at the mounting position (A), and an opening (9) for inserting the filter member than the support part (12b) arranged on the side, has a tapered surface which is inclined such that the mounting position side as the insertion direction in front of the filter element (8) and (12a), a lid member (6) is fed wind machine casing (2, 3 ) Protrudes toward the inside of the fan case (2, 3) and comes into contact with the lower side (8b) of the rear end of the filter member (6) in the insertion direction of the filter member (6), and the rear end is mounted on the filter member (8). cover-side support portion for supporting at position (a) has a (13b) The lid-side support portion (13b) has a lid-side tapered surface (13a) whose height decreases in the protruding direction, and before the lid member (6) is assembled to the blower case (2, 3). Between the lower side (8b) of the rear end of the filter member (8) and the filter member insertion opening (9), there is a gap (14) into which the tip of the lid side support portion (13b) is inserted. When the temporary support member (15) to be provided is provided and the lid side taper surface (13a) is inserted into the gap (14) and the opening (9) for inserting the filter member is closed by the lid member (6), the lid side tapered surface (13a) is pushed up the filter member (8) to the mounting position (a), the cover-side support portion (13b) is said that you supported in mounted position a filter element (8) (a).

  Thereby, the front-end | tip part of the insertion direction of a filter member (8) is moved to the mounting position (A) of a filter member (8) along a taper surface (12a), and a filter member (8) is supported to a support part (12b). And the lid-side support portion (13b) can be supported at the mounting position (A), so that the filter member (8) can be assembled at the predetermined mounting position (A) without requiring visual confirmation. .

Moreover, the front-end | tip part of a cover side support part (13b) can be inserted in the clearance gap (14) formed of the temporary support member (15), and the lower side (8a) of the rear-end part of a filter member (8) is easy. The lid member (6) can be assembled so that the lid side support portion (13b) comes into contact with the lid side support portion (13b).

Furthermore, since the rear end portion of the filter member (8) is pushed up to the mounting position (A) of the filter member (8) by the lid side tapered surface (13a) simultaneously with the operation of assembling the lid member (6), the filter member is further The assembly workability of (8) can be improved.

  In addition, the code | symbol in the parenthesis attached | subjected to each said means is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

(Configuration of this embodiment)
Hereinafter, the configuration of the present embodiment will be described with reference to FIGS. FIG. 1 is a side view of a blower unit 1 according to this embodiment, and is mounted on a vehicle in a direction indicated by an arrow in FIG.

  The blower unit 1 constitutes a vehicle air conditioner mounted on a left-hand drive vehicle, and air blown from an air outlet (not shown) of the blower unit 1 is introduced into an air conditioning unit (not shown) to obtain a desired temperature. After being air-conditioned, the air is blown out toward the passenger compartment (not shown). Note that the air conditioning unit is disposed in the depth direction in FIG.

  The blower unit 1 of the present embodiment includes an inside / outside air switching box 2 and a fan scroll 3.

  The inside / outside air switching box 2 is formed with an inside air introduction port 4 leading upward into the vehicle interior and an outside air introduction port 5 leading outside the vehicle compartment, and an air filter (filter member of the present invention) 8 to be described later is inserted into the side wall. It is a box-shaped case member in which an air filter insertion opening (filter member insertion opening of the present invention) 9 is formed. Note that the inside / outside air switching box 2 of the present embodiment is not provided with a bottom surface, and has a substantially rectangular top surface 3c (see FIG. 2) provided in a fan casing 3 (described later) located below the inside / outside air switching box 2. Faces the inside of the inside / outside air switching box 2.

  In the inside / outside air switching box 2, the inside / outside air switching door 7 that selectively opens and closes the inside air introduction port 4 and the outside air introduction port 5 and the inside / outside air switching box 2 flows into the inside / outside air switching box 2. And an air filter 8 through which the air passes.

  A packing 5 a is attached around the outside air inlet 5. The inside / outside air switching door 7 is a door in which a plate-like door body in which a door packing 7a made of Systex is arranged on both surfaces rotates around a rotation shaft 7b.

  The air filter insertion opening 9 is a quadrangular opening that is opened in the side wall on the vehicle rear side of the inside / outside air switching box 2 and is closed from the outside by a lid member 6 described later. The air filter insertion opening 9 is formed such that the vertical dimension is equal to or larger than the vertical dimension of the air filter 8 and the vertical dimension from which a temporary support member 15 to be described later projects. Has been.

  The air filter 8 is disposed below the inside / outside air switching door 7 and above a blower fan to be described later. The mounting position (A) of the air filter 8 is shifted upward with respect to the air filter insertion opening 9. Yes. The air filter 8 is formed by cutting a filter medium made of, for example, filter paper and activated carbon into a predetermined shape and continuously bending it into a wave shape.

  Next, the fan scroll 3 will be described. The spiral fan scroll 3 is located below the inside / outside air switching box 2 and includes an upper scroll case 3a and a lower scroll case 3b. Inside the fan scroll 3, a centrifugal blower fan that sucks air introduced into the inside / outside air switching box 2 from the inside air introduction port 4 or the outside air introduction port 5 and a blower motor that drives the blowing fan are arranged. The upper scroll case 3a and the lower scroll case 3b are fixed by a spring holding 10.

  FIG. 2 is a perspective view of the scroll case 3 as viewed obliquely from above. The upper scroll case 3a is provided with a substantially rectangular upper surface 3c. An air suction port 11 is formed on the upper surface 3c at a position corresponding to the suction port of a blower fan disposed inside the scroll case 3, and the air filter 8 is 30 mm or more above the air suction port 11. It is mounted at the air filter mounting position (A) so as to be substantially orthogonal to the air flow.

  Moreover, the case side filter support member 12 which protrudes to the mounting position (A) of the said air filter 8 is provided in the both sides of the vehicle front side of the upper surface 3c. In addition, a temporary support member 15 that protrudes in the vertical direction at a height lower than the mounting position (A) of the air filter 8 is provided on the vehicle rear side of the upper surface 3c (in the vicinity of the air filter insertion opening 9). ing.

  The case-side filter support member 12 is formed on the front side in the insertion direction of the air filter 8, contacts the lower side 8a of the distal end portion of the air filter 8 in the insertion direction, and the lower side 8a of the distal end portion in the insertion direction is mounted on the air filter. The case side support portion 12b supported at the position (A) and the air filter insertion opening 9 side of the case side support portion 12b are arranged closer to the mounting position (A) side toward the front side in the insertion direction of the air filter 8. The case-side tapered surface 12a is inclined so as to become.

  FIG. 4 is a view showing a state in which the air filter 8 is being inserted. When the air filter 8 is inserted from the air filter insertion opening 9 toward the front side of the vehicle by the case side tapered surface 12a, the front end portion of the air filter 8 extends along the case side tapered surface 12a. Since the lower side 8a of the front end portion of the air filter 8 is guided to the upper side of the case side filter support member 12 by the case side taper surface 12a, the air filter 8 is assembled when the air filter 8 is assembled. The operator can assemble the air filter 8 at the predetermined mounting position (A) without confirming the position of the case side support portion 12b.

  Between the case-side filter support members 12 provided at two places, two protrusions 12d that protrude from the upper surface 3c of the upper scroll case 3a to the mounting position (A) of the air filter 8 in the vehicle vertical direction are provided. ing. The projecting portion 12d prevents the central portion of the air filter 8 from being bent toward the air suction port 11 side. Further, two reinforcing walls 12c extending in a direction orthogonal to the insertion direction of the air filter 8 are formed in the case side support portion 12b.

  The temporary support member 15 is formed between the lower side 8b of the rear end portion of the air filter 8 and the lower edge of the air filter insertion opening 9 before the lid member 6 described later is assembled to the inside / outside air switching box 2. 5 is provided with a gap 14 into which the tip of a lid-side filter support member 13 to be described later is inserted. FIG. 5 shows that the air filter insertion opening 9 is formed by assembling the lid member 6 to the inside / outside air switching box 2. It is a figure which shows the state before closing.

  The inside / outside air switching box 2 and the fan casing 3 are fixed by fixing means such as screws, and the blower case of the present invention refers to a combination of the inside / outside air switching box 2 and the fan casing 3. Yes.

  Next, the lid member 6 will be described. As shown in FIG. 1, the air filter insertion opening 9 is closed from the outside of the inside / outside air switching box 2 by a lid member 6. FIG. 3 is a partially enlarged perspective view of the lid member 6 as viewed obliquely from the front of the vehicle.

  The lid member 6 is provided with a lid-side filter support member 13 protruding toward the inside of the inside / outside air switching box 2. The lid-side filter support member 13 contacts the lower side 8b of the rear end portion of the air filter 8 in the insertion direction of the air filter 8 in the inside / outside air switching box 2, and supports the rear end portion of the air filter 8 at the mounting position (A). It has the lid side support part 13b and the lid side taper surface 13a which becomes low as it becomes the protrusion direction of the lid side support part 13b. When the lid side taper surface 13a is inserted into the gap 14 formed by the temporary support member 15 described above, and the lid member 6 is assembled to the inside / outside air switching box 2 so as to close the air filter insertion opening 9, The air filter 8 is pushed up to the mounting position A by the lid-side tapered surface 13a, and the lid-side support portion 13b contacts the lower side 8b of the rear end portion in the insertion direction of the air filter 8 in the inside / outside air switching box 2. The air filter 8 is supported at the mounting position (A).

  3 is a partially enlarged view of the lid member 6, only one lid side filter support member 13 is shown. However, the lid member 6 has lid side filter support members 13 at two locations on the left and right. Is provided. Further, a U-shaped engaging means 13c is provided at the right end of the lid member 13, and is assembled to the inside / outside air switching box 2 by this U-shaped engaging means 13c.

(Effect of this embodiment)
As described above, in this embodiment, the case-side filter support member 12 is provided with the case-side tapered surface 12a that is low on the filter member insertion opening 9 side and is inclined so as to be connected to the case-side support portion 12b. By simply inserting the air filter 8 from the air filter insertion opening 9, the tip of the air filter 8 is moved to the case side support portion 12b by the case side tapered surface 12a. Since the lower side 8a of the front end portion of the air filter 8 is guided to the upper side of the case side support portion 12b by the case side tapered surface 12b, the operator confirms the position of the case side support portion 12b when the air filter 8 is assembled. Even if not, the air filter 8 can be mounted at the predetermined mounting position (A) (see FIG. 4).

  Further, since the gap 14 is provided between the lower side 8b of the rear end portion of the air filter 8 and the air filter insertion opening 9 by the temporary support member 15, the lower side 8b of the rear end portion of the air filter 8 is easily provided. The tip of the lid-side filter support member 13 (the tip of the lid-side taper surface 13a in this embodiment) can be inserted between the air filter and the lower edge of the air filter insertion opening 9 (see FIG. 5).

  Since the lid-side filter support member 13 is provided with the lid-side taper surface 13a, when the lid member 6 is assembled so that the tip of the lid-side taper surface 13a of the lid-side filter support member 13 is inserted into the gap 14, Since the rear end portion of the filter 8 is pushed up by the lid-side tapered surface 13a and supported by the lid-side support portion 13b at the mounting position (A) of the air filter 8, the assembling workability of the air filter 8 is further improved. be able to.

(Other embodiments)
In the above embodiment, the shape of the air filter insertion opening 9 is rectangular, but the present invention is not limited to this, and the shape of the lower edge of the air filter insertion opening 9 is partially The concave / convex shape is formed so as to protrude upward, and the concave / convex portion is formed between the lower side 8b of the rear end portion of the air filter 8 and the air filter insertion opening 9 before the cover member 6 is assembled. You may make it provide the clearance gap 14 by the recessed part of a shape. In this case, the temporary support member 15 of the present invention corresponds to the concavo-convex convex portion.

  Moreover, in the said embodiment, although the opening part 9 for air filter insertion was formed in the side wall of the vehicle rear side of the inside / outside air switching box 2, this invention is not limited to this, The opening part 9 for air filter insertion May be formed by a notch provided at the lower end of the side wall on the vehicle rear side of the inside / outside air switching box 2 and an edge of the upper surface 3c of the upper scroll case 3a.

  Moreover, in the said embodiment, although the case side filter support member 12 with which the case side taper surface 12a and the case side support part 12b were integrated was used, this invention is not limited to this, Case side taper It is good also as a shape where the surface 12a and the case side support part 12b were isolate | separated.

It is the figure which looked at the air blower unit 1 in this embodiment from the side. It is the perspective view which looked at the upper scroll case 3a from diagonally upward. It is the partially expanded perspective view which looked at the cover member 6 from the vehicle diagonally forward. It is a figure which shows the state in the middle of inserting the air filter 8 from the opening part 9 for air filter insertion in the inside / outside air switching box 2. FIG. It is a figure which shows the state before closing the opening part 9 for air filter insertion from the outer side with the cover member 6. FIG. It is sectional drawing which shows the structure of the conventional air blower unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Blower unit 2 Inside / outside air switching box 3 Fan scroll 6 Cover member 8 Air filter 9 Air filter insertion opening 12 Case side filter support member 12a Case side taper surface 12b Case side support portion 13 Cover side filter support member 13a Cover side taper Surface 13b Lid side support portion 14 Clearance 15 Temporary support member

Claims (1)

An inside / outside opening (4) that communicates with the vehicle interior and an outside air introduction port (5) that communicates with the outside of the vehicle interior are formed to selectively open and close the inside air introduction port (4) and the outside air introduction port (5). A blower case (2, 3) in which air switching means (7) and a blower fan for sucking air from the inside air introduction port (4) or the outside air introduction port (5) are disposed;
In the blower case (2, 3), it is arranged between the inside / outside air switching means (7) and the blower fan, and the blower case ( 2, 3) a filter member (8) through which the air that has flowed into passes;
A filter member insertion opening (9) formed in the blower case (2, 3) and into which the filter member (8) is inserted;
A lid member (6) for closing the filter member insertion opening (9),
In the blower unit mounted at the mounting position (A) where the filter member (8) is closer to the inside / outside air switching means (7) side than the filter member insertion opening (9),
The blower case (2, 3) is formed in front of the filter member (8) in the insertion direction, and a support portion (12b) for supporting the filter member (8) at the mounting position (A),
A taper surface (12a) that is disposed closer to the filter member insertion opening (9) than the support portion (12b) and is inclined so as to be closer to the mounting position as the filter member (8) is inserted in the insertion direction. )
It said lid member (6) protrudes toward the inside of the front Symbol blower case (2,3), the lower rear end of the insertion direction of the filter member in the blower case (2,3) in (6) a cover-side support portion for supporting at mounting position (a) of the said rear end portion in contact with the (8b) the filter member (8) and (13b),
The lid-side support portion (13b) has a lid-side tapered surface (13a) whose height decreases as it becomes the protruding direction.
Before assembling the lid member (6) to the blower case (2, 3), the lower side (8b) of the rear end of the filter member (8), the opening for inserting the filter member (9), A temporary support member (15) providing a gap (14) into which the tip of the lid side support portion (13b) is inserted,
When the lid side taper surface (13a) is inserted into the gap (14) and the filter member insertion opening (9) is closed by the lid member (6), the lid side taper surface (13a) There the push-up filter member (8) to said mounting position (a), the lid-side support portion (13b) is fan characterized that you support the filter member (8) in the mounting position (a) unit.

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