JP5444042B2 - Piping cover - Google Patents

Description

  The present invention relates to a piping cover that covers, for example, an outdoor portion of piping led out from the outside to the outside of a building outer wall.

  In recent years, air conditioners having various functions have appeared. For example, an air conditioner that has a ventilation function that has a ventilation hose from the indoor unit to the outside, an air conditioner that has a function of automatically cleaning dust attached to a filter provided in the indoor unit, or garbage collected by cleaning There is an air conditioner that automatically discharges the air from the air passage for ventilation described above.

  By the way, the ventilation hose in the air conditioner which has the ventilation function mentioned above is protected by the piping cover. Therefore, the ventilation hose forms a wind passage between the room and the outside. However, in order to remove insects entering from the wind passage, there is a pipe cover having an insect filter (for example, a patent). Reference 1 etc.).

JP 2008-190632 A

  In the proposed piping cover described above, the piping cover body attached to the outer wall, the insect filter attached to the pipe cover body, and the insect filter cover attached to the pipe cover body so as to cover the outside of the insect filter. It is set as the structure which has.

  Even if the air conditioner automatically discharges the garbage collected by the indoor unit as described above, there are cases where it is not desired to discharge the dust from the piping cover. Therefore, it is necessary to perform regular cleaning work.

  Therefore, when using the proposed piping cover, when confirming the completion of the piping cover or when cleaning the insect filter, it is necessary to first remove the insect filter cover from the pipe cover body, and then remove the insect filter from the pipe cover body. There was a problem in workability.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a piping cover with improved workability.

  The present invention provides a pipe cover that covers at least a ventilation pipe derived from an outer wall, a pipe cover body that is attached to the outer wall, an insect filter that is detachably attached to the pipe cover body, and a state that covers the outside of the insect filter An insect repellent filter cover that is detachably attached to the insect repellent filter, and is provided between the insect repellent filter and the pipe cover main body, and the pipe cover main body is provided together with the insect repellent filter cover by an operation involving rotation. And a rotary engagement / disengagement means for engaging / disengaging the motor. In the present invention, since the insect filter cover is attached to the insect filter, the insect filter and the insect filter cover can be removed together by removing the insect filter from the pipe cover body through the rotation engagement / disengagement means. Can be improved.

  In the pipe cover, the rotation engaging / disengaging means is provided on a concave portion provided on an inner peripheral surface of a circular hole formed in one of the pipe cover main body and the insect repellent filter, and on the other of the pipe cover main body and the insect repellent filter. An annular protrusion formed and positioned by fitting into the circular hole, and formed on the annular protrusion, and can be engaged with and disengaged from the recess when the annular protrusion is rotated at a predetermined angle with respect to the circular hole. You may make it have a protrusion part. In this configuration, when the annular protrusion is fitted in the circular hole, the insect-proof filter is positioned at a predetermined position with respect to the pipe cover main body. When the insect-proof filter is rotated in this state, the annular protrusion is removed. The projecting portion provided on the side surface enters and exits the recessed portion formed on the inner peripheral surface of the circular hole.

  In the pipe cover, the annular protrusion has an elastic displacement part that displaces the protruding part inward and outward of the annular protrusion according to the unevenness of the inner peripheral surface of the circular hole as the insect-proof filter rotates. When the insect repellent filter rotates from a predetermined angle to another angle, the projecting part comes out of the recess as the elastic displacement part is displaced to the inside of the circular hole, so that the insect repellent filter is connected to the pipe. You may enable it to remove from a cover main body. In the case of this configuration, when the protruding portion tries to come out of the concave portion, the elastic displacement portion is deformed by the force from the convex portion located adjacent to the concave portion in the rotation direction, and the protruding portion comes out of the concave portion and is not locked. It becomes a state. Therefore, the insect-proof filter can be removed from the pipe cover body at the rotation angle at which the unlocked state is reached. In addition, since the deformation of the elastic displacement portion can be used at the time of engagement / disengagement, smooth engagement and removal can be performed while securing the locking.

  Furthermore, in the piping cover, the direct-acting engagement / disengagement for detachably attaching the insect-proof filter cover to the insect-proof filter between the insect-proof filter cover and the insect-proof filter by an operation involving pulling and pressing. Means are preferably provided. In the case of this configuration, the operation direction is different from that of the rotation engagement / disengagement means that is engaged / disengaged by an operation involving rotation. It can be done alternatively.

  Furthermore, in the pipe cover, the linear motion engaging / disengaging means includes a concave locking portion provided in one of the insect filter cover and the insect filter, and the other of the insect filter cover and the insect filter. And a convex locked portion that is locked to the concave locking portion.

  Furthermore, in the piping cover, the insect filter cover has a side wall portion that covers a side surface of the insect filter, and is fitted to one of the side surface of the insect filter and the side wall portion of the insect filter cover. It is preferable that a protruding ridge is formed. In the case of this configuration, with the insect filter cover attached to the insect filter, the protrusion is fitted to the side of the insect filter or the side wall of the insect filter cover, so that the deformation of the insect filter cover can be suppressed, Along with this, the falling off of the insect filter cover from the insect filter can be suppressed.

  Furthermore, the pipe cover may be configured to include a fall prevention means for preventing the insect filter from dropping from the pipe cover body between the insect filter and the pipe cover body. . In the case of this configuration, even if the elastic displacement portion is deformed and the protruding portion is about to come out of the concave portion, in other words, even if the insect-proof filter is about to fall from the pipe cover body, the fall prevention means will prevent the fall. .

  According to the present invention, since the insect filter cover is attached to the insect filter, the insect filter and the insect filter cover can be removed together by removing the insect filter from the pipe cover body via the rotation engagement / disengagement means. It is possible to provide a piping cover with improved performance.

It is a schematic diagram which shows the piping cover which concerns on one Embodiment of this invention, and piping covered by this. It is a disassembled perspective view which shows the piping cover which concerns on one Embodiment of this invention. It is a longitudinal cross-sectional view which shows the piping cover of FIG. It is a rear view which shows the piping cover of FIG. It is a front view which shows the piping cover of FIG. It is a bottom view which shows the piping cover of FIG. It is a left view which shows the insect-proof filter which comprises the piping cover of FIG. It is an external appearance perspective view which shows the insect-proof filter of FIG.

  Hereinafter, embodiments of the present invention will be described in detail.

  FIG. 1 is a schematic view (longitudinal sectional view) showing a pipe cover and a pipe covered by the pipe cover according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing the pipe cover, and FIG. 3 is the pipe cover. FIG. 4 is a rear view showing the pipe cover, FIG. 5 is a front view showing the pipe cover, FIG. 6 is a bottom view showing the pipe cover, and FIG. 7 is an insect filter constituting the pipe cover. FIG. 8 is an external perspective view showing the insect filter.

  The pipe cover 1 covers the bent portions 51a and 52a of the first pipe 51 and the second pipe 52 led out from the inside to the outside of the outer wall 50 of the building. The first pipe 51 has a bent portion 51a. A little lower outlet 51b is also covered. The first pipe 51 is a ventilation pipe, and the second pipe 52 is a pipe connecting an indoor unit and an outdoor unit (not shown). An electric wire that connects the indoor unit and the outdoor unit may be passed through the second pipe 52. The lower part of the second pipe 52 than the part covered with the pipe cover 1 is covered with another straight tubular pipe cover 53.

  The pipe cover 1 is detachably attached to the insect filter 3 so as to cover the outside of the insect filter 3, the pipe cover body 2 attached to the outer wall 50, the insect filter 3 attached to the pipe cover body 2 detachably. An insect repellent filter cover 4 is provided.

  The pipe cover main body 2 has a structure that is divided into two parts, a first part 2A and a second part 2B (see FIG. 2), and the parts 2A and 2B are connected to each other. The second portion 2B has a substantially planar shape along the outer wall 50, and the first portion 2A has a facing portion 2A1 facing the second portion 2B, an upper portion 2A2 above the facing portion 2A1, a facing portion 2A1, and It has an edge portion 2A3 formed around the upper portion 2A2 and excluding the lower portion, and a circular hole 11 is formed in the upper portion 2A2.

  The first portion 2A has a plurality of mounting holes 2a to be attached to the outer wall 50, three in the illustrated example, and the second portion 2B has two mounting holes 2b, which are located below the first portion 2A. The two mounting holes 2a and the two mounting holes 2b of the second portion 2B are disposed at corresponding positions, and are screwed through the mounting holes 2a and 2b, and 1 at the upper end of the first portion 2A. The pipe cover body 2 is attached to the outer wall 50 by screwing through the two attachment holes 2a. The pipe cover body 2 may have a configuration in which the second portion 2B is omitted or a configuration in which the second portion 2B is integrated with the first portion 2A.

  The insect repellent filter 3 has a vertical cross section that is substantially L-shaped, and has an attachment portion 3a attached to the pipe cover body 2 and a filter portion 3b. The attachment portion 3a is formed by the filter portion 3b. The angle θ (see FIG. 3) is larger than 90 °, and in a state where the insect filter 3 is attached to the pipe cover body 2, the filter portion 3b is inclined so that the side closer to the outer wall 50 is higher and the side far from the outer wall 50 is lower. doing. The mounting portion 3a is substantially parallel to the upper portion 2A2.

  Moreover, the filter part 3b is arranged along the width direction W, and the some long hole 3h for ventilation is formed (refer FIG. 6). The long hole 3h is long in a direction substantially orthogonal to the width direction W. Further, a concave groove 3k for separating the filter portion 3b is formed in the width direction W in the portion near the filter portion 3b of the attachment portion 3a (see FIGS. 2 and 8), and the filter portion 3b is attached to the attachment portion. By bend | folding relatively with respect to 3a, the filter part 3b can be cut off in the location of the ditch | groove 3k.

  The insect filter 3 is detachably attached to the pipe cover body 2 by a rotation engagement / disengagement means 10 provided between the insect filter 3 and the pipe cover body 2. The insect-proof filter cover 4 is detachably attached to the insect-proof filter 3 by a linear motion engaging / disengaging means 20 provided between the insect-proof filter cover 4 and the insect-proof filter 3.

  The rotation engagement / disengagement means 10 requires an operation with rotation for attachment / detachment, and the linear motion engagement / disengagement means 20 requires an operation for pulling / pressing for attachment / detachment. The attachment / detachment direction is different from that of the direct acting engagement / disengagement means 20. This will be described in detail later.

  The rotation engagement / disengagement means 10 includes a first locking portion 12 provided in the pipe cover body 2 along the peripheral edge of the circular hole 11 formed in the pipe cover body 2 as shown in FIG. 3 is formed on the back surface 3m side (pipe cover main body 2 side) of the mounting portion 3a, and is positioned on the circular cover 11 by positioning the annular positioning projection 13 on the pipe cover main body 2 side of the mounting portion 3a. And a first locked portion 14 that can be engaged with and disengaged from the first locking portion 12 when rotated at a predetermined angle. The attachment portion 3a is provided with a circular ventilation pipe insertion hole 3c inside the annular protrusion 13. The ventilation pipe insertion hole 3c may have a size that allows at least the pipe 51 to be inserted.

  The first locking portion 12 has a plurality of (for example, four) concave portions 12a formed on the inner peripheral surface 11a of the circular hole 11, and these concave portions 12a are arranged at an equidistant position, for example, 0 o'clock, 3 o'clock of the watch, It is arranged at 4 o'clock positions at 6 o'clock and 9 o'clock. In FIG. 2, one of the four recesses 12a described above does not appear.

  The first locked portion 14 has a plurality of (four in the illustrated example) protruding portions 14 a, and each protruding portion 14 a is formed in the circular hole 11 with the annular protrusion 13 fitted in the circular hole 11. It is arranged along the annular projection 13, and is provided on the outer surface of the annular projection 13 so as to protrude outward in the radial direction of the projection 13. It fits in each of the said recessed part 12a by the relative rotation with respect to the cover main body 2. As shown in FIG. Accordingly, the protruding portion 14a is locked in the circumferential direction by the both side surfaces 12b of the recess 12a. The insect filter 3 is attached to the pipe cover body 2 in a state in which the anti-insect filter 3 is prevented from rotating by this locking. Here, unless otherwise specified, the circumferential direction refers to a direction along the periphery of the circular hole 11 and is also referred to as a rotational direction. The direction of the axial center of the protrusion 13 is referred to as the axial direction, and the inner and outer directions of the protrusion 13 are referred to as the radial direction. Furthermore, the outer wall 50 side is referred to as the back side, and the side away from the outer wall 50 is referred to as the front side.

  The arrangement of the protrusions 14a is set to be the same as that of the recesses 12a. Further, the protruding portion 14 a is disposed at the central portion in the rotational direction of the elastic displacement portion 13 a provided on the annular protrusion 13. The elastic displacement portion 13a is composed of a thinned portion formed by recessing the inner side on the back surface 3m side of the projection 13, and when an external force is received, the elastic displacement portion 13a is elastically displaced in the inward / outward direction (radial direction) of the annular protrusion 13, and the external force is When it stops working, it will return to its original state. Due to the presence of the elastic displacement portion 13a, the protrusion 14a and the recess 12a can be engaged and disengaged. That is, when the insect filter 3 rotates, the projecting portion 14 a provided on the outer surface of the annular protrusion 13 is pushed by the inner peripheral surface 11 a, and the elastic displacement portion 13 a is deformed, so that the inner peripheral surface 11 a of the circular hole 11 When entering the formed recess 12a, the protruding portion 14a is locked to the recess 12a, and the elastic displacement portion 13a returns to its original state. Further, when the protrusion 14a tries to come out of the concave portion 12a by the rotation of the insect repellent filter 3, the elastic displacement portion 13a is deformed by receiving a force from the convex portion (side surface 12b) located adjacent to the rotational direction of the concave portion 12a. , The protruding portion 14a comes out of the recessed portion 12a and enters the non-locking state. Further, since the deformation of the elastic displacement portion 13a can be used at the time of engagement / disengagement, smooth engagement and dismounting can be performed while ensuring the locking.

  In addition, a hole 3d having substantially the same width in the circumferential direction as that of the elastic displacement portion 13a is formed on the front surface 3i side of the elastic displacement portion 13a in the mounting portion 3a. The displacement is caused by a small external force. In the illustrated example, the elastic displacement portion 13a is formed in a range including the portion of the protruding portion 14a and the portions on both sides of the protruding portion 14a. However, the portion of the protruding portion 14a is omitted and the both sides of the protruding portion 14a are omitted. You may form only in a part.

  The annular protrusion 13 is provided with notches 13b (four in total) at portions between the elastic displacement portions 13a, and the notch 13b has locking pieces 13c for preventing the fall. It is provided (see FIG. 8), and a gap is formed between both side surfaces 13b1 of the notch 13b and the locking piece 13c (see FIG. 8). The locking piece 13c is formed so as to protrude in the same direction as the protruding direction of the protrusion 13, and a locking claw 13d is provided on the distal end side of the locking piece 13c so as to protrude in the radial direction. The locking claw 13d is locked in the locking groove 11b (see FIG. 2) formed in the inner peripheral surface 11a of the circular hole 11, so that the insect-proof filter 3 is prevented from dropping from the pipe cover body 2. . That is, the locking piece 13c and the locking groove 11b constitute fall prevention means, and the elastic displacement portion 13a is displaced and the protruding portion 14a is disengaged from the concave portion 12a. The fall prevention means prevents the fall from the main body 2. In addition, an arc-shaped long hole 3e is formed at an outer position of the end portion on the front surface 3i side of the locking piece 13c in the attachment portion 3a.

  Further, in the protruding direction of the protrusion 13 (the front-rear direction of the mounting portion 3a), the positions of the locking claw 13d and the protruding portion 14a are different, and the engagement of the locking claw 13d in the axial direction with respect to the locking groove 11b. Stopping and preventing the protrusion 14a from coming off from the recess 12a can be performed without any trouble.

  Further, on the front surface 3i side (the side opposite to the outer wall mounting side) of the upper portion 2A2, an annular flange 2b (see FIG. 3) protruding toward the front surface 3i is formed around the circular hole 11. Is provided over the entire circumference. On the other hand, the insect repellent filter 3 is formed with an annular abutting portion 3j that abuts against the hook 2b in a state where the insect repellent filter 3 is attached to the pipe cover body 2 on the outer wall 50 side (see FIG. 3). Moisture that has entered from the contact portion (gap) a between the filter 3 and the pipe cover main body 2 is discharged to the outside through a space 3n (see FIG. 3) formed outside the ridge 2b. Yes.

  The linear engagement / disengagement means 20 is provided between the insect repellent filter cover 4 and the insect repellent filter 3 as described above, and requires an operation involving pulling and pressing. The operation direction is different. The linearly engaging / disengaging means 20 includes a second locking portion 21 provided on the insect-proof filter 3 and a second locked portion 22 provided on the insect-proof filter cover 4 and locked to the second locking portion 21. With.

  The insect repellent filter cover 4 is formed so as to cover the side surface 3f of the attachment portion 3a in the insect repellent filter 3, and the front surface 3i of the attachment portion 3a and the upper surface of the filter portion 3b (see FIG. 7). A plurality (five in the illustrated example) of convex locked portions 22a as the second locked portions 22 are formed on the inner surface 4a of the side wall portion 4b covering the side surface 3f. On the other hand, a plurality of (three in the illustrated example) concave locking portions 3g are formed on the side surface 3f of the attachment portion 3a in the insect-proof filter 3 and corresponding to the convex locked portions 22a. The convex locked portion 22a is locked to the concave locking portions 3g. These concave locking portions 3g are provided as the second locking portions 21. The two concave locking portions 3g close to the filter portion 3b are each provided with a convex locked portion 22a. And one convex locked portion 22a is locked to one concave locking portion 3g far from the filter portion 3b. By such locking, the insect filter cover 4 can be attached to the insect filter 3, and when the concave locking part 3g and the convex locked part 22a are brought into the non-locking state, the insect filter 3 covers the insect filter cover. 4 can be removed.

  The concave locking portion 3g and the convex locked portion 22a are locked in a form in which one convex locked portion 22a is locked to one concave locking portion 3g or one concave locking portion. It is free to select a configuration in which two or more convex locked portions 22a are locked to the locking portion 3g. Alternatively, the concave locking portion may be provided on the insect-proof filter cover 4 and the convex locked portion may be provided on the side surface 3 f of the attachment portion 3 a in the insect-proof filter 3.

  A plurality (five in the illustrated example) of protrusions 23 are formed on the inner surface 4a of the side wall 4b of the insect-proof filter cover 4 (see FIG. 2). These protrusions 23 are fitted to the side surface 3f of the attachment portion 3a of the insect repellent filter 3 to suppress deformation of the insect repellent filter cover 4, and accordingly, the insect repellent filter cover 4 is prevented from falling off from the insect repellent filter 3. It has become. The protrusions 23 may be provided on the side surface 3f instead of the inner surface 4a of the insect-proof filter cover 4, or may be provided on both the inner surface 4a and the side surface 3f.

  In the piping cover 1 of the present embodiment configured as described above, attachment / removal is performed as follows.

  First, using a binding belt (not shown), the second part 2B is attached to the second pipe 52, and the second pipe 52 is sandwiched between the first part 2A and the second part 2B. Is attached to the outer wall 50 by screwing via the attachment holes 2a, 2b.

  Next, an annular protrusion 13 provided on the attachment portion 3a of the insect repellent filter 3 is formed on the pipe cover body 2 in a state where the outlet end of the first pipe 51 is inserted into the pipe insertion hole 3c of the insect repellent filter 3. Insert into the circular hole 11. Thereby, positioning with respect to the piping cover main body 2 of the insect-proof filter 3 is performed. At the time of positioning, the elastic displacement portion 13a is deformed and the protruding portion 14a is displaced radially inward, and the locking piece 13c is also bent radially inward. When the insect repellent filter 3 is rotated clockwise or counterclockwise with respect to the pipe cover main body 2 in a state where the positioning has been performed, the positions of the protrusions 14a and the concave portions 12a provided in the pipe cover main body 2 are matched. The protrusion 14a fits into the recess 12a, and the insect filter 3 is locked to the pipe cover body 2 in the circumferential direction. At the same time, the locking claw 13d of the locking piece 13c is locked in the locking groove 11b of the pipe cover body 2 in the axial direction, and the insect-proof filter 3 is prevented from falling. In addition, when attaching the insect-proof filter 3 to the piping cover main body 2 in the state in which the position of the protrusion part 14a and the recessed part 12a corresponds, the clockwise rotation or the counterclockwise rotation may be omitted.

  Next, the insect filter cover 4 is pressed against the insect filter 3 and attached. At the time of this attachment, the position of the convex locked portion 22a provided on the insect-proof filter cover 4 is matched with the concave locking portion 3g provided on the insect-proof filter 3, and the convex locked portion is placed on the concave locking portion 3g. 22a is locked. In this locked state, the protrusion 23 is fitted to the side surface 3f to suppress the deformation of the insect filter cover 4, and accordingly, the insect filter cover 4 is prevented from falling off the insect filter 3.

  As described above, the insect-proof filter 3 is detachably attached to the pipe cover body 2, and the insect-proof filter cover 4 is detachably attached to the insect-proof filter 3. In this attached state, an external force is applied to the insect-proof filter cover 4, the elastic displacement portion 13a is deformed, the projecting portion 14a is displaced inward of the annular projection 13, and the projecting portion 14a comes out of the recessed portion 12a, so that the pipe cover body Even if there is a possibility that the insect repellent filter 3 falls from 2, the insect repellent filter 3 is prevented from falling by the engagement between the engagement claw 13d of the engagement piece 13c and the engagement groove 11b as a fall prevention means.

  Thereafter, when the insect-proof filter cover 4 is grasped and pulled out from the above-described attached state, only the insect-proof filter cover 4 can be removed. Further, when the insect-proof filter cover 4 is gripped and rotated by a certain angle (for example, about 22.5 °), the elastic displacement portion 13a is deformed, and the projecting portion 14a is displaced inward of the annular projection 13 to form the concave portion 12a. The locking piece 13c is similarly bent inward and the locking claw 13d is released from the locking groove 11b. When the insect filter cover 4 is pulled from this state, the insect filter 3 and the insect filter cover 4 can be removed together. When removing the insect filter 3 and the insect filter cover 4 together, the insect filter 3 and the insect filter cover 4 are rotated by a certain angle (for example, about 22.5 °). However, this angle is merely a guideline, and the protrusion 14a is detached from the recess 12a. Any angle may be used as long as the locking claw 13d is detached from the locking groove 11b.

  As described above, in the case of this embodiment, since the insect filter cover 4 is attached to the insect filter 3, the insect filter 3 can be removed by removing the insect filter 3 from the pipe cover body 2 via the rotation engagement / disengagement means 10. 3 and the insect-proof filter cover 4 can be removed together, and workability can be improved. Further, when the annular protrusion 13 is fitted into the circular hole 11, the insect-proof filter 3 is positioned at a predetermined position with respect to the pipe cover main body 2, and when the insect-proof filter 3 is rotated in this state, The projecting portion 14a provided on the outer side surface enters and exits the recessed portion 12a formed on the inner peripheral surface 11a of the circular hole 11 and enters an engagement / disengagement state.

  Further, in the present embodiment, the annular protrusion 13 is an elastic displacement portion 13 a that displaces the protruding portion 14 a inward and outward of the annular protrusion 13 according to the unevenness of the inner peripheral surface 11 a of the circular hole 11 as the insect filter 3 rotates. And when the insect repellent filter 3 rotates from a predetermined angle to another angle, the projecting portion 14a comes out of the concave portion 12a as the elastic displacement portion 13a is displaced to the inside of the circular hole 11, so that the insect repellent Since the filter 3 can be removed from the pipe cover main body 2, when the protruding portion 14a tries to come out of the concave portion 12a, the projection 3a protrudes from the convex portion (the side surface 12b) located adjacent to the rotational direction of the concave portion 12a. Under the force, the elastic displacement portion 13a is deformed, and the protruding portion 14a comes out of the recessed portion 12a and enters the non-locking state. Therefore, it is possible to remove the insect-proof filter 3 from the pipe cover body 2 when the rotation angle is in the unlocked state. In addition, since the deformation of the elastic displacement portion 13a can be used at the time of engagement / disengagement, smooth engagement and removal can be performed while securing the locking.

  Furthermore, in this embodiment, the direct-acting engagement / disengagement means for detachably attaching the insect-proof filter cover 4 to the insect-proof filter 3 between the insect-proof filter cover 4 and the insect-proof filter 3 by an operation involving pulling and pressing. 20 is provided, and therefore the operation direction is different from that of the rotation engagement / disengagement means 10 that is engaged / disengaged by an operation involving rotation. It can be done alternatively without being done.

  Furthermore, in this embodiment, the insect repellent filter cover 4 has a side wall portion 4b that covers the side surface 3f of the insect repellent filter 3, and a protrusion 23 that is fitted to the side surface 3f of the insect repellent filter 3 is formed on the side wall portion 4b. Since the ridge 23 is fitted to the side surface 3f of the insect filter 3 with the insect filter cover 4 attached to the insect filter 3, the deformation of the insect filter cover 4 can be suppressed. Along with this, the falling off of the insect filter cover 4 from the insect filter 3 can be suppressed.

  Furthermore, in this embodiment, the fall prevention means (the locking piece 13c and the locking groove 11b) prevents the insectproof filter 3 from dropping from the piping cover body 2 between the insect filter 3 and the piping cover body 2. Therefore, even if the elastic displacement portion 13a is deformed and the protruding portion 14a is about to come out of the concave portion 12a, in other words, even if the insect-proof filter 3 is about to fall from the pipe cover body 2, the fall prevention means Will be prevented.

  In the above-described embodiment, the insect-proof filter 3 is provided with the locking piece 13c and the pipe cover body 2 is provided with the locking groove 11b as the fall-preventing means. The locking groove 11b may be provided on the pipe cover body, and the locking piece 13c may be provided on the pipe cover body 2.

  Further, in the above-described embodiment, as the direct acting engagement / disengagement means 20, the second locking portion 21 (concave locking portion 3 g) provided in the insect repellent filter 3 and the insect repellent filter cover 4 are provided as the second locking portion. The second locked portion 22 (convex locked portion 22a) locked to the portion 21 is provided. On the contrary, the present invention provides a concave locking portion 3g on the insect-proof filter cover 4, It is good also as a structure which provided the convex to-be-latched part 22a in the insect-proof filter 3. FIG.

  Further, in the above-described embodiment, the pipe cover 1 covers the bent part 51a of the first pipe 51 to the outlet 51b and covers the bent part 52a of the second pipe 52. It is good also as a structure which covers not only the bending part 51a of the 1st piping 51 but the exit 51b at least.

DESCRIPTION OF SYMBOLS 1 Piping cover 2 Piping cover main body 3 Insect-proof filter 3g Recessed part 3f Side surface 4 Insect-proof filter cover 10 Rotation engagement / disengagement means 11 Circular hole 11b Locking groove (fall prevention means)
12 1st latching | locking part 12a Recessed part 13 Positioning protrusion 13a Elastic displacement part 13c Locking piece (fall prevention means)
DESCRIPTION OF SYMBOLS 14 1st to-be-latched part 14a Protrusion part 20 Linear motion engaging / disengaging means 21 2nd latching part 22 2nd to-be-latched part 22a Convex to-be-latched part 23 Projection part 50 Building outer wall 51 Piping

Claims (7)

In the pipe cover covering at least the ventilation pipe (51) led out from the outer wall (50),
A piping cover body (2) attached to the outer wall (50);
An insect repellent filter (3) removably attached to the pipe cover body (2);
An insect filter cover (4) removably attached to the insect filter (3) in a state of covering the outside of the insect filter (3);
Provided between the insect-proof filter (3) and the pipe cover main body (2), the operation of the insect-proof filter (3) together with the insect-proof filter cover (4) is carried out by the operation accompanied by rotation. A piping cover, comprising: a rotary engagement / disengagement means (10) for engagement / disengagement with respect to the housing. The piping cover according to claim 1,
The rotation engaging / disengaging means (10) includes a recess (12a) provided on an inner peripheral surface (11a) of a circular hole (11) formed in one of the pipe cover main body (2) and the insect repellent filter (3). And an annular protrusion (13) formed on the other of the pipe cover body (2) and the insect repellent filter (3) and positioned by fitting into the circular hole (11), and the annular protrusion (13). And a projecting portion (14a) formed and disengaged from the recess (12a) when the annular projection (13) is rotated at a predetermined angle with respect to the circular hole (11). Piping cover. The piping cover according to claim 2,
The annular protrusion (13) causes the protrusion (14a) to move according to the unevenness of the inner peripheral surface (11a) of the circular hole (11) as the insect-proof filter (3) rotates. It has an elastic displacement part (13a) that is displaced inward and outward, and when the insect repellent filter (3) rotates from a predetermined angle to another angle, the elastic displacement part (13a) is formed in the circular hole (11). The insect filter (3) can be removed from the pipe cover body (2) by the protrusion (14a) coming out of the recess (12a) as it is displaced inward. Piping cover characterized by In the piping cover in any one of Claims 1 thru | or 3,
For attaching the insect filter cover (4) to the insect filter (3) detachably between the insect filter cover (4) and the insect filter (3) by an operation involving pulling and pressing. A piping cover, characterized in that a linearly engaging / disengaging means (20) is provided. The piping cover according to claim 4,
The linear motion engaging / disengaging means (20) includes a concave locking portion (3g) provided on one of the insect filter cover (4) and the insect filter (3), the insect filter cover (4), and A piping cover having a convex locked portion (22a) provided on the other of the insect-proof filters (3) and locked to the concave locking portion (3g). In the piping cover according to claim 5,
The insect repellent filter cover (4) has a side wall (4b) that covers the side surface (3f) of the insect repellent filter (3), the side surface (3f) of the insect repellent filter (3) and the insect repellent filter cover (4). A piping cover, characterized in that a protrusion (23) to be fitted to the other is formed on one of the side walls (4b). In the piping cover in any one of Claims 1 thru | or 6,
Drop prevention means (13c, 11b) for preventing the insect filter (3) from dropping from the pipe cover body (2) is provided between the insect filter (3) and the pipe cover body (2). Piping cover characterized by being.

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