JP6988668B2 - Filter mounting structure - Google Patents

Description

The present disclosure relates to a filter mounting structure.

For example, Japanese Patent Application Laid-Open No. 2016-165949 discloses an in-vehicle battery cooling duct device including an intake duct, a bezel provided at an intake port of the intake duct, and a filter provided on the back surface of the bezel. Has been done. The filter is attached to the bezel by inserting the filter fixing claws on the bezel into the mounting holes of the filter.

Japanese Unexamined Patent Publication No. 2016-165949

As disclosed in Patent Document 1, a structure is known in which a filter is attached to a base member by inserting a locking claw of the base member (bezel) into a hole provided in the filter.

In such a filter mounting structure, it is assumed that the locking claw is pulled out from the hole and the filter is removed from the base member when cleaning the filter. However, if an excessive load is applied to the filter when the locking claw is pulled out from the hole, there is a concern that the filter may be damaged.

Therefore, an object of the present disclosure is to solve the above-mentioned problems, and to provide a filter mounting structure in which a load applied to the filter when the filter is removed is reduced.

A filter mounting structure according to the present disclosure comprises a base member having locking claws and a filter provided with holes and mounted to the base member. The filter has a first opening edge and a second opening edge facing each other across the opening surface of the hole. The second opening edge has a protrusion having a convex shape that protrudes toward the first opening edge. The locking claw has a shaft that is inserted into the hole and abuts against the protrusion, and a tip that is provided at the tip of the shaft and locks the filter around the opening surface of the hole. The tip portion is a filter when the opening surface of the hole is viewed from the front, a first inclined portion which overlaps with the filter and extends diagonally with respect to the first opening edge, and when the opening surface of the hole is viewed from the front. The corner portion that overlaps with and extends diagonally with respect to the first opening edge, intersects the first inclined portion, and maximizes the distance from the first opening edge in the opposite direction of the first opening edge and the second opening edge. It has a second inclined portion to form.

According to the mounting structure of the filter configured as described above, when the filter is removed from the base member, it is necessary to pull the filter toward the front and pull out the tip of the locking claw from the hole. In the present disclosure, the first inclined portion and the second inclined portion extending obliquely with respect to the first opening edge form a corner portion that intersects with each other and forms the maximum distance from the first opening edge. When the opening edge gets over the first inclined portion and the second inclined portion, the first opening edge and the second opening are reduced along with the reduction of the hooking allowance between the filter and the tip portion in the opposite direction of the first opening edge and the second opening edge. The hooking width between the filter and the tip in the direction orthogonal to the facing direction of the edge is also reduced. As a result, the tip of the locking claw can be smoothly pulled out from the hole, and the load applied to the filter can be reduced.

Further, when the filter is removed from the base member, the position of the shaft portion is shifted inside the hole, or the shaft portion is pressed against the protruding portion to deform the protruding portion, so that the first opening edge and the second opening edge are deformed. It is possible to reduce the hooking allowance between the filter and the tip portion in the opposite direction. As a result, the load applied to the filter can be further reduced.

As described above, according to the present disclosure, it is possible to provide a filter mounting structure in which the load applied to the filter when the filter is removed is reduced.

It is an exploded assembly drawing which shows the mounting structure of a filter in an embodiment. It is a perspective view which shows the mounting structure of the filter in an embodiment. It is a top view which shows a filter. It is a figure which shows the filter of the range surrounded by the two-dot chain line IV in FIG. It is a figure which shows the filter and the bezel of the range surrounded by the two-dot chain line V in FIG. FIG. 5 is a cross-sectional view showing a filter and a bezel seen from the direction of arrow on the VI-VI line in FIG. It is a figure which shows the position change of the 1st opening edge at the time of removing a filter. It is a figure which shows the mounting structure of the filter for comparison. FIG. 8 is a cross-sectional view showing a filter and a bezel seen from the direction of the arrow on the IX-IX line in FIG. It is a figure which shows one aspect of the locking claw at the time of removing a filter. It is a figure for demonstrating the mechanism for preventing the misalignment of a filter in the direction orthogonal to the facing direction of the 1st opening edge and the 2nd opening edge. It is another figure for demonstrating the mechanism for preventing the misalignment of a filter in the direction orthogonal to the facing direction of a 1st opening edge and a 2nd opening edge.

Embodiments of the present disclosure will be described with reference to the drawings. In the drawings referred to below, the same or corresponding members are assigned the same number.

FIG. 1 is an exploded assembly view showing a filter mounting structure according to an embodiment. With reference to FIG. 1, the filter mounting structure of this embodiment is applied to a duct device for ventilation. More specifically, the filter mounting structure is a hybrid vehicle powered by an internal combustion engine such as a gasoline engine or a diesel engine and a motor powered by a chargeable / dischargeable battery, and a plug-in capable of external charging. It is installed in hybrid vehicles, electric vehicles, etc., and is applied to duct devices for supplying cooling air to batteries.

The filter mounting structure includes a bezel 21, a filter 41, and a trim 61. The trim 61 is an interior cover for the passenger compartment. The trim 61 is provided with an intake port 62.

The bezel 21 is attached to the trim 61. The bezel 21 has a plate-shaped portion 23 and a lattice window 22. The plate-shaped portion 23 has a plate shape that follows the cover shape of the trim 61. The grid window 22 is composed of a grid-shaped opening provided in the plate-shaped portion 23. The lattice window 22 faces the intake port 62. The air in the vehicle interior is taken into the duct through the lattice window 22 and the intake port 62.

The filter 41 has a mesh structure. The filter 41 is made of, for example, a dry non-woven fabric. The filter 41 is attached to the bezel 21. The filter 41 is sandwiched by the bezel 21 and the trim 61. The filter 41 removes foreign matter such as dust from the air that has entered through the lattice window 22.

FIG. 2 is a perspective view showing a filter mounting structure according to an embodiment. In FIG. 2, a bezel 21 and a filter 41 attached to the bezel 21 are shown. FIG. 3 is a plan view showing a filter.

With reference to FIGS. 1 to 3, the filter 41 has a ventilation portion 42 and a frame portion 43. The ventilation portion 42 is a region through which air passes in the filter 41, and is provided in a bellows shape. The ventilation portion 42 is arranged at the intake port 62 while facing the lattice window 22. The frame portion 43 is provided in a frame shape around the ventilation portion 42. The frame portion 43 is overlapped with the plate-shaped portion 23 of the bezel 21.

The filter 41 is provided with a plurality of holes 44, 45, 46, 47, 48, 49. Each of the plurality of holes 44, 45, 46, 47, 48, 49 consists of through holes penetrating the frame portion 43. The plurality of holes 44, 45, 46, 47, 48, 49 are provided around the ventilation portion 42 at intervals from each other.

The holes 45 and 46 are provided horizontally apart from each other. The holes 45 and 46 are provided above the ventilation portion 42.

The bezel 21 has a plurality of locking claws 74,75,76,77,78,79. The plurality of locking claws 74, 75, 76, 77, 78, 79 are provided at positions corresponding to the plurality of holes 44, 45, 46, 47, 48, 49, respectively. The plurality of locking claws 74, 75, 76, 77, 78, 79 are inserted into the plurality of holes 44, 45, 46, 47, 48, 49, respectively. A plurality of locking claws 74, 75, 76, 77, 78, 79 are locked by the filter 41 around the plurality of holes 44, 45, 46, 47, 48, 49, respectively, whereby the filter 41 is engaged. It is fixed to the bezel 21.

Hereinafter, the locking structure of the locking claw 75 and the hole 45 and the locking structure of the locking claw 76 and the hole 46 will be described in detail. FIG. 4 is a diagram showing a filter in the range surrounded by the alternate long and short dash line IV in FIG.

With reference to FIG. 4, the filter 41 has a first opening edge 51 and a second opening edge 52. The first opening edge 51 and the second opening edge 52 face each other with the opening surface of the hole 45 interposed therebetween. The first opening edge 51 and the second opening edge 52 face each other in the direction indicated by the arrow 101. The direction indicated by the arrow 101 is the vertical direction. Hereinafter, the direction indicated by the arrow 101 is also referred to as "the opposite direction of the first opening edge 51 and the second opening edge 52".

The filter 41 further has a third opening edge 53 and a fourth opening edge 54. The third opening edge 53 and the fourth opening edge 54 face each other with the opening surface of the hole 45 interposed therebetween. The third opening edge 53 and the fourth opening edge 54 face each other in the direction indicated by the arrow 102. The direction indicated by the arrow 102 is a direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52 in the plane of the opening surface of the hole 45. The direction indicated by the arrow 102 is the horizontal direction. Hereinafter, the direction indicated by the arrow 102 is also referred to as "a direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52".

The first opening edge 51 and the second opening edge 52 extend linearly along a direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52. The third opening edge 53 and the fourth opening edge 54 extend linearly along the opposite direction of the first opening edge 51 and the second opening edge 52. The third opening edge 53 intersects one end of the first opening edge 51 and one end of the second opening edge 52 at both ends extending linearly. The fourth opening edge 54 intersects the other end of the first opening edge 51 and the other end of the second opening edge 52 at both ends extending linearly.

The second opening edge 52 has a protrusion 55. The protruding portion 55 has a convex shape that protrudes toward the first opening edge 51. The protruding portion 55 has a convex shape that protrudes upward. The protrusion 55 is provided at a position distant from both the third opening edge 53 and the fourth opening edge 54 in a direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52.

The protruding portion 55 has a third inclined portion 56 and a fourth inclined portion 57. The third inclined portion 56 extends in an oblique direction with respect to the first opening edge 51 and the second opening edge 52. The third inclined portion 56 is provided between the fourth inclined portion 57 and the fourth opening edge 54 in a direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52. The third inclined portion 56 has a protrusion length from the second opening edge 52 from the fourth opening edge 54 to the third opening edge 53 in a direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52. It is tilted so that it becomes larger as it gets closer.

The fourth inclined portion 57 extends in an oblique direction with respect to the first opening edge 51 and the second opening edge 52. The fourth inclined portion 57 is provided between the third inclined portion 56 and the third opening edge 53 in a direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52. The fourth inclined portion 57 extends from the third opening edge 53 to the fourth opening edge 54 in a direction in which the protrusion length from the second opening edge 52 is orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52. It is tilted so that it becomes larger as it gets closer.

The third inclined portion 56 and the fourth inclined portion 57 intersect with each other to form a protruding end of the protruding portion 55 having the maximum protrusion length from the second opening edge 52.

FIG. 5 is a diagram showing filters and bezels in the range surrounded by the two-dot chain line V in FIG. FIG. 6 is a cross-sectional view showing a filter and a bezel seen from the direction of arrow on the VI-VI line in FIG.

With reference to FIGS. 5 and 6, the locking claw 75 has a shaft portion 33 and a tip portion 32. The shaft portion 33 projects from the plate-shaped portion 23 of the bezel 21 to form a shaft shape. The shaft portion 33 has a rectangular cross section in which the vertical direction is the lateral direction and the horizontal direction is the longitudinal direction when cut by a plane orthogonal to the axial direction. The cross-sectional shape of the shaft portion 33 is not particularly limited.

The tip portion 32 is provided at the tip of the shaft portion 33. The tip portion 32 is provided at a position away from the plate-shaped portion 23 of the bezel 21 in the axial direction of the shaft portion 33. The tip portion 32 protrudes upward from the shaft portion 33 when cut by a vertical plane parallel to the axial direction of the shaft portion 33 (in the cross section shown in FIG. 6), and has a triangular shape having an apex at the tip thereof. Has a cross section of.

The shaft portion 33 is inserted into the hole 45. When the opening surface of the hole 45 is viewed from the front, the shaft portion 33 is arranged in the surface of the opening surface of the hole 45. The shaft portion 33 is arranged directly above the protruding portion 55. The shaft portion 33 is in contact with the protruding portion 55. The shaft portion 33 is in contact with the third inclined portion 56. The tip 32 locks the filter 41 around the opening surface of the hole 45. When the opening surface of the hole 45 is viewed from the front, the tip portion 32 overlaps with the filter 41 above the first opening edge 51.

The tip portion 32 has a first inclined portion 34 and a second inclined portion 37. When the opening surface of the hole 45 is viewed from the front, the first inclined portion 34 overlaps with the filter 41 and extends in an oblique direction with respect to the first opening edge 51. The first inclined portion 34 is provided between the fourth opening edge 54 and the second inclined portion 37 in a direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52. In the first inclined portion 34, the distance from the first opening edge 51 to the first inclined portion 34 in the opposite direction of the first opening edge 51 and the second opening edge 52 is the distance between the first opening edge 51 and the second opening edge 52. It is inclined so as to increase as it approaches the third opening edge 53 from the fourth opening edge 54 in the direction orthogonal to the facing direction. The first inclined portion 34 extends in parallel with the third inclined portion 56 of the protruding portion 55.

When the opening surface of the hole 45 is viewed from the front, the second inclined portion 37 overlaps with the filter 41 and extends in an oblique direction with respect to the first opening edge 51. The second inclined portion 37 is provided between the first inclined portion 34 and the third opening edge 53 in a direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52. In the second inclined portion 37, the distance from the first opening edge 51 to the second inclined portion 37 in the opposite direction of the first opening edge 51 and the second opening edge 52 is the distance between the first opening edge 51 and the second opening edge 52. It is inclined so as to increase as it approaches the fourth opening edge 54 from the third opening edge 53 in the direction orthogonal to the facing direction.

The angle formed by the first inclined portion 34 and the first opening edge 51 has a size different from the angle formed by the second inclined portion 37 and the first opening edge 51. The angle formed by the first inclined portion 34 and the first opening edge 51 may have the same magnitude as the angle formed by the second inclined portion 37 and the first opening edge 51.

The second inclined portion 37 intersects with the first inclined portion 34 to form a corner portion 36 having the maximum distance from the first opening edge 51 in the opposite direction of the first opening edge 51 and the second opening edge 52. .. The first inclined portion 34 and the second inclined portion 37 intersect each other and form a tapered shape having a corner portion 36 as an apex.

Subsequently, the effects exerted by the filter mounting structure in the present embodiment will be described with reference to comparative examples.

FIG. 7 is a diagram showing a change in the position of the first opening edge when the filter is removed. FIG. 8 is a diagram showing a mounting structure of a filter for comparison. FIG. 8 is a diagram corresponding to FIG. FIG. 9 is a cross-sectional view showing a filter and a bezel seen from the direction of the arrow on the IX-IX line in FIG.

In the comparative example shown in FIGS. 8 and 9, the tip portion 32 of the locking claw 75 has a parallel portion 234. When the opening surface of the hole 45 is viewed from the front, the parallel portion 234 overlaps with the filter 41 at a position upward away from the first opening edge 51 and extends in parallel with the first opening edge 51. The second opening edge 52 does not have the protrusion 55 in FIG. The hole 45 has a rectangular opening surface in which the first opening edge 51, the second opening edge 52, the third opening edge 53, and the fourth opening edge 54 form four sides.

It is assumed that the filter 41 is removed from the bezel 21, such as when cleaning the filter 41. When the filter 41 is removed, the frame portion 43 above the ventilation portion 42 is gripped, and the filter 41 is directed from the plate-shaped portion 23 toward the tip portion 32 as in the filter 41 shown by the dotted line in FIG. Further, it is necessary to pull out the tip portion 32 from the hole 45 while pulling the filter 41 toward the front. At this time, the filter 41 receives a load due to contact with the tip portion 32 around the opening surface of the hole 45. If the load applied to the filter 41 exceeds the allowable value, the filter 41 may be damaged.

With reference to FIGS. 8 and 9, in the above comparative example, when the filter 41 is pulled toward the front and the first opening edge 51 gets over the parallel portion 234, the tip portion 32 comes out of the hole 45. In this case, the filter 41 applies a load due to contact with the tip portion 32 at least in parallel while the hooking allowance h between the filter 41 and the tip portion 32 in the opposite direction of the first opening edge 51 and the second opening edge 52 decreases. Since it is received over the range of the width L of the portion 234, the load applied to the filter 41 becomes large.

Further, the hole 45 is provided larger than the cross section of the shaft portion 33 in consideration of the load when the filter 41 is attached and detached and the variation in the component dimensions. However, in such a configuration, as in the filter 41 shown by the dotted line in FIG. 9, when the bezel 21 and the filter 41 are displaced from each other due to vibration during transportation or the like, the first opening edge 51 and the filter 41 are displaced from each other. The hooking allowance between the filter 41 and the tip portion 32 in the opposite direction of the second opening edge 52 is reduced. This may cause the filter 41 to come off the bezel 21.

With reference to FIG. 7, in contrast to this, in the present embodiment, the first opening edge 51 has the first opening edge 51 with respect to the tip portion 32, which is shown in the drawing, together with the operation of pulling the filter 41 toward the front. The relative movement is performed so as to sequentially pass through the positions of 51p, the first opening edge 51q, the first opening edge 51r, and the first opening edge 51s.

When the operation of pulling the filter 41 toward the front is started, first, the first opening edge 51 moves relative to the position of the first opening edge 51p to the position of the first opening edge 51q.

When the filter 41 is further pulled toward, the first opening edge 51 moves relative to the position of the first opening edge 51s from the position of the first opening edge 51q through the position of the first opening edge 51r to the position of the first opening edge 51s. It gets over the inclined portion 34 and the second inclined portion 37.

At this time, the first inclined portion 34 and the second inclined portion 37 extending in an oblique direction with respect to the first opening edge 51 intersect with each other to form a corner portion 36 having the maximum distance from the first opening edge 51. Therefore, as the hooking allowance h between the filter 41 and the tip portion 32 in the facing direction of the first opening edge 51 and the second opening edge 52 decreases, the direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52 The hooking width b between the filter 41 and the tip portion 32 in the above portion 32 is also reduced. As a result, the tip portion 32 can be smoothly extracted from the hole 45, and the load applied to the filter 41 can be reduced.

Further, in the present embodiment, the protruding portion 55 is provided on the second opening edge 52, and the shaft portion 33 of the tip portion 32 is in contact with the protruding portion 55. With such a configuration, even when vibration during transportation or the like is applied, the misalignment of the bezel 21 and the filter 41 in the opposite direction of the first opening edge 51 and the second opening edge 52 is suppressed, and the filter 41 can be used. It is possible to prevent the bezel 21 from coming off.

FIG. 10 is a diagram showing one aspect of the locking claw when the filter is removed. Further referring to FIG. 10, in the present embodiment, when the filter 41 is removed, the shaft portion 33 is moved from the position where it abuts on the third inclined portion 56 to the position where it abuts on the fourth inclined portion 57 inside the hole 45. By moving the filter 41 and the tip portion 32 in the opposite direction of the first opening edge 51 and the second opening edge 52, the hooking allowance can be reduced by Δh.

Further, since the protruding portion 55 having a protruding shape from the second opening edge 52 is easily bent, the hooking allowance can be similarly reduced by pressing the shaft portion 33 against the protruding portion 55 to deform the protruding portion 55. Can be made to. As a result, the load applied to the filter 41 when the filter 41 is removed can be further reduced.

11 and 12 are diagrams for explaining a mechanism for preventing the positional deviation of the filter in the direction orthogonal to the opposite direction of the first opening edge and the second opening edge. In FIG. 11, the range surrounded by the two-dot chain line V in FIG. 2 is shown, and in FIG. 12, the range surrounded by the two-dot chain line XII in FIG. 2 is shown.

With reference to FIG. 11, in the locking structure of the locking claw 75 and the hole 45, the shaft portion 33 is in contact with the third inclined portion 56. With such a configuration, the locking claw 75 approaches the third opening edge 53 from the fourth opening edge 54 in the direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52 inside the hole 45. It is restricted to move in the direction. Therefore, the filter 41 approaches the fourth opening edge 54 from the third opening edge 53 in the direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52 (the direction indicated by the arrow 103 in FIG. 11). ) Cannot be moved.

With reference to FIG. 12, the locking structure of the locking claw 76 and the hole 46 has a symmetrical structure as compared with the locking structure of the locking claw 75 and the hole 45.

In the locking structure of the locking claw 76 and the hole 46, the shaft portion 33 is in contact with the third inclined portion 56. With such a configuration, the locking claw 76 approaches the third opening edge 53 from the fourth opening edge 54 in the direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52 inside the hole 46. It is restricted to move in the direction. Therefore, the filter 41 approaches the fourth opening edge 54 from the third opening edge 53 in the direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52 (direction indicated by the arrow 104 in FIG. 12). ) Cannot be moved.

With the above configuration, the misalignment of the bezel 21 and the filter 41 in the direction orthogonal to the facing direction of the first opening edge 51 and the second opening edge 52 is suppressed, so that the filter 41 is further prevented from coming off the bezel 21. Can be effectively prevented.

The filter mounting structure according to the present embodiment described above includes a bezel 21 as a base member having a locking claw 75, and a filter 41 provided with a hole 45 and mounted on the bezel 21. The filter 41 has a first opening edge 51 and a second opening edge 52 facing each other across the opening surface of the hole 45. The second opening edge 52 has a protruding portion 55 having a convex shape that protrudes toward the first opening edge 51. The locking claw 75 is a shaft portion 33 that is inserted into the hole 45 and abuts on the protruding portion 55, and a tip portion 32 that is provided at the tip of the shaft portion 33 and locks the filter 41 around the opening surface of the hole 45. Have. When the opening surface of the hole 45 is viewed from the front, the tip portion 32 has a first inclined portion 34 that overlaps with the filter 41 and extends diagonally with respect to the first opening edge 51, and the opening surface of the hole 45 is viewed from the front. When viewed, it overlaps with the filter 41 and extends diagonally with respect to the first opening edge 51, intersects with the first inclined portion 34, and is the first opening in the opposite direction of the first opening edge 51 and the second opening edge 52. It has a second inclined portion 37 forming a corner portion 36 having a maximum distance from the edge 51.

According to the filter mounting structure of the present embodiment configured as described above, the load applied to the filter 41 when the filter 41 is removed can be reduced, and the filter 41 can be prevented from being damaged.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

The present disclosure applies, for example, to duct devices for ventilation.

21 bezel, 22 grid window, 23 plate-shaped part, 32 tip part, 33 shaft part, 34 first inclined part, 36 square part, 37 second inclined part, 41 filter, 42 ventilation part, 43 frame part, 44, 45 , 46, 47, 48, 49 holes, 51 1st opening edge, 52 2nd opening edge, 53 3rd opening edge, 54 4th opening edge, 55 protrusion, 56 3rd inclined part, 57 4th inclined part, 61 trim, 62 intake port, 74,75,76,77,78,79 locking claws, 234 parallel parts.

Claims (1)

A base member with locking claws and
It is provided with a hole and is provided with a filter attached to the base member.
The filter has a first opening edge and a second opening edge facing each other across the opening surface of the hole.
The second opening edge has a convex portion protruding toward the first opening edge.
The locking claw has a shaft portion that is inserted into the hole and abuts on the protruding portion, and a tip portion that is provided at the tip of the shaft portion and that locks the filter around the opening surface of the hole. death,
When the opening surface of the hole is viewed from the front, the tip portion has a first inclined portion that overlaps with the filter and extends diagonally with respect to the first opening edge, and the opening surface of the hole is viewed from the front. In this case, the first opening overlaps with the filter, extends diagonally with respect to the first opening edge, intersects with the first inclined portion, and faces the first opening edge and the second opening edge. A filter mounting structure with a second sloping portion forming a corner that maximizes the distance from the edge.

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