JP2005061706A - Installing structure of intrusion preventive device in ventilator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an installing structure of an intrusion preventive device in a ventilator, easy in maintenance of the intrusion preventive device, installable in a general poly vinyl chloride pipe, and installable in an existing ventilation pipe. <P>SOLUTION: A plurality of metallic clips 30 are fixed to a projecting part 2c of the ventilation pipe 2. The clips 30 have a sandwiching part 31 for sandwiching the projecting part 2c in the thickness direction Y of the ventilation pipe 2 for fixing the clips 30 to the projecting part 2c, and a connecting piece part 32 projecting inward to the ventilation pipe 2. The intrusion preventive device 10 is detachably fixed in the ventilation pipe 2 via the connecting piece part 32 of the clips 30. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a structure for mounting an intrusion prevention device in a ventilation device.

  Conventionally, intrusion prevention devices are often attached to ventilation devices. As a general attachment structure of the intrusion prevention device, it is often attached to the outdoor side. In this case, if the intrusion prevention device provided at a high place is to be cleaned, maintenance becomes extremely difficult. Therefore, an intrusion prevention device disclosed in Patent Document 1 below has been developed.

Japanese Patent Laid-Open No. 11-81508 (FIG. 3, page 2) According to the invention of Patent Document 1, a handle is provided in the intrusion prevention device so that the intrusion prevention device can be replaced from the indoor side of the ventilation pipe.

However, in the invention of Patent Document 1, since the engaging portion on the outer periphery of the cylindrical tubular body is engaged with the engaging protrusion provided on the inner periphery of the aeration pipe, a ventilation made of a general PVC pipe is used. It cannot be attached to a pipe.
In addition, it cannot be attached to existing ventilation pipes.

  Therefore, an object of the present invention is to provide an intrusion prevention device mounting structure in a ventilation device that is easy to maintain the intrusion prevention device and can be attached to a general PVC pipe or the like and can also be attached to an existing ventilation pipe. Is to provide.

  In order to achieve the above object, the present invention provides a ventilation pipe that penetrates an outer wall to allow communication between the indoor side and the outdoor side, and projects one end of the ventilation pipe to the outdoor side, and the protruding portion is a ventilation device. In the ventilator covered with, an intrusion prevention device for preventing insects and / or birds from entering the vent pipe is set to a size that can be installed in the vent pipe, and the intrusion prevention device is attached and detached from the indoor side. A mounting structure for an intrusion prevention device, wherein a plurality of metal clips are fixed to a protrusion of the ventilation pipe, and the clip is connected to the protrusion to fix the clip to the protrusion. And a connecting piece projecting inward of the ventilation pipe, and the intrusion prevention device is detachably fixed in the ventilation pipe via the connection piece of the clip. It has been.

According to the present invention, the intrusion prevention device can be replaced from the indoor side.
In addition, since the clip sandwiching the protruding portion of the ventilation pipe is provided, it can be attached to a general ventilation pipe such as a PVC pipe, and can also be attached to an existing ventilation pipe.

  In a preferred embodiment of the present invention, the clip sandwiching portion has a substantially U-shaped cross section, is formed in a plate spring shape sandwiching the protruding portion of the pipe by the elasticity of the metal material, and the pipe sandwiched between the sandwiching portions. A burring portion that cuts into the surface layer and prevents the clip from falling off from the tip of the pipe is provided, and the connecting piece portion is continuous in an L-shaped cross section from one end portion of the pinching portion.

  In this embodiment, the burrs of the metal clip bite into the surface of the resin pipe, so that the clip is difficult to fall off from the tip of the pipe. Therefore, the clip can be securely fixed.

  In another preferred embodiment of the present invention, the intrusion prevention device is engaged with the connection piece portion in the axial direction of the pipe from the first posture that is pressed against the connection piece portion from the indoor side and is rotatable. The second posture is slightly rotated in the first direction to be mounted in the pipe via the clip, and from the second posture to the second direction opposite to the first direction. It is configured to return to the first posture by being slightly rotated and to be taken out from the pipe by releasing the engaged state.

  In this embodiment, since the intrusion prevention device can be replaced by rotating the intrusion prevention device, it is not necessary to use a magnet or the like, so that the cost of the intrusion prevention device can be reduced.

  In still another preferred form of the present invention, the intrusion prevention device has an outer frame part obtained by punching a vent hole from a circular metal plate, and a part of the outer frame part is cut along a radial direction. , The vicinity of the cutting part is set at a position that is separated from the other part of the outer frame by a small distance in the tube axis direction, and the connecting piece part is located between the vicinity and the other part of the outer frame part By doing so, the intrusion prevention device is fixed to the clip.

  In this embodiment, since it is not necessary to make the intrusion prevention device cylindrical, it can be molded by simply punching a flat plate and pressing it, so that the cost can be reduced.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
overall structure:
As shown in FIG. 1, the ventilation device includes a ventilation pipe 2, a ventilation device 1, and an intrusion prevention device 10. The ventilation pipe 2 is provided so as to penetrate the inner wall 5, the ventilation layer 8 and the outer wall 4, and communicates the indoor I and the outdoor O. A ventilation device 1 is provided in the outdoor side opening 2 b of the ventilation pipe 2.
An electric fan 3 may be provided in the indoor side opening 2 a of the ventilation pipe 2. The electric fan 3 may perform not only exhaust but also intake. Further, it is not always necessary to provide an electric fan or the like to forcibly perform intake and exhaust.

The outdoor O side of the ventilation pipe 2 is a protruding portion 2 c that protrudes from the outer wall 4.
The ventilation device 1 includes a base 22 and an outdoor hood 20 which are separate from each other. The pedestal 22 includes a base portion 25 having a surface (outer wall mounting surface) facing the outer wall 4 in a state of being close to the outer wall 4. The base portion 25 is formed with an outer fitting portion (circumferential portion) 29 close to the outer periphery of the protruding portion 2c. The outer fitting portion 29 is formed in an annular shape that is concentric with the outer periphery of the ventilation pipe 2.

  On the other hand, as shown in FIG. 2, the outdoor hood 20 has a front plate portion 40, a top plate portion 42, and a bottom plate portion 44. The front plate portion 40 shown in FIG. 1 covers the outdoor side opening 2b of the ventilation pipe 2 from the outside front. The top plate portion 42 and the bottom plate portion 44 (FIG. 2) cover the outdoor side opening 2b from above and below, respectively. Accordingly, the front plate portion 40, the top plate portion 42, and the bottom plate portion 44 form a space 20a that faces the outdoor side opening 2b.

  The outdoor hood 20 has upper and lower passage wall surfaces 46 at left and right ends. The vertical passage wall surface 46 forms a vertical passage 20b that opens up and down. The pair of upper and lower passages 20b communicate with the space 20a.

  The outdoor hood 20 shown in FIG. 2 is provided with a pair of diaphragm plates 49, 49 between the space 20a and the vertical passage 20b. The diaphragm plate portion 49 protrudes along the vertical plane from the front plate portion 40, the top plate portion 42 and the bottom plate portion 44, and is used to make the shape of the ventilation passage substantially approximate to an H-shape. 49a. At the upper end of the notch 49a, a gutter 49b for preventing rainwater from entering from the notch 49a is provided in a state protruding from the vertical passage 20b.

  In FIG. 2, the notch 49 a is provided with a bird-proof plate 50 formed separately from the outdoor hood 20. The bird guard plate 50 is for preventing birds from entering the space 20a, and is formed of a single metal plate and has a plurality of ventilation holes (hereinafter referred to as "bird guard holes"). ) 51 is punched out. The bird-proof hole 51 is set to a size that can prevent entry of birds. By mounting the bird guard plate 50, it is possible to prevent birds from entering the space 20a and forming a nest. It is not always necessary to provide the bird guard plate 50.

Intrusion prevention device 10:
On the other hand, as shown in FIG. 3A, an intrusion prevention device 10 for preventing insects and / or birds from invading from the aeration pipe 2 is attached to the protrusion 2 c of the aeration pipe 2.

  FIG. 4 shows the intrusion prevention device 10 viewed from the indoor I side. As shown in FIG. 4, the intrusion prevention device 10 has an outer frame portion 12 in which a plurality of vent holes 11 are punched out from a single circular metal plate. A plurality of crosspieces 12b are formed in the outer frame portion 12 by this punching. In the vicinity of the center of the crosspiece 12b, a gripping portion 14 protruding toward the indoor I direction is formed. The grip 14 is formed by bending the crosspiece 12b toward the indoor I side.

  In the lower part of the outer frame part 12, a draining part 12a in which the vent hole 11 is not punched is formed. The draining portion 12a shown in FIG. 3A can prevent inflow of rainwater or the like from the outdoor O toward the indoor I.

A net 13 covering the vent hole 11 is fixed to the surface on the outdoor O side of the outer frame portion 12 shown in FIG.
The size of the vent hole 11 is set to, for example, the same size as that of the bird-proof hole 51 (FIG. 2) in the bird-proof plate 50 (FIG. 2), that is, a size that a bird or the like cannot enter. . On the other hand, it is preferable to use a mesh having a size that prevents insects and the like from entering.
The material of the intrusion prevention device 10 is not particularly limited as long as the net 13 can be stretched on the side surface thereof. For example, in addition to metals such as iron, stainless steel, and aluminum, synthetic resin, etc. Can be used. On the other hand, the material of the net 13 may be any material that can be expected to have an insect repellent function. For example, in addition to metals such as iron and stainless steel, synthetic resin or the like can be used.

Metal clip 30;
Next, the metal clip 30 for attaching the intrusion prevention device 10 to the ventilation pipe 2 will be described.
As shown in the enlarged plan view of FIG. 3B, the clip 30 has a sandwiched portion 31 and a connecting piece portion 32 bent together by bending a single metal plate.

The sandwiching portion 31 sandwiches the ventilation pipe 2 from both sides in the thickness direction Y of the ventilation pipe 2 and has a substantially “U” cross section. The sandwiching portion 31 is formed in a leaf spring shape that sandwiches the protruding portion 2c of the ventilation pipe 2 by the elasticity of a metal material.
The clip portion 31 is formed with a bite portion 33 that bites into the surface layer of the ventilation pipe 2 and prevents the clip 30 from falling off from the tip of the ventilation pipe 2. As shown in FIG. 6, the burrs 33 are formed by cutting out a part of the sandwiching portions 31. The burrs 33 are formed, for example, by notching the upper and lower ends on the inner peripheral side of the sandwiching portion 31 obliquely and bending them toward the ventilation pipe 2 side.
Accordingly, as shown in FIG. 3B, when the clip portion 31 of the clip 30 is mounted so as to be sandwiched from both sides of the vent pipe 2, the clamp portion 31 sandwiches the vent pipe 2 from both sides due to the elasticity of the metal material. The portion 33 bites into the ventilation pipe 2 and fixes the clip 30 to the ventilation pipe 2.

  The connection piece 32 is provided so as to protrude inward of the ventilation pipe 2 along a vertical plane (a cross section perpendicular to the axis of the ventilation pipe 2). It is formed continuously in a letter shape.

Mounting structure:
Here, as shown to Fig.6 (a), a part of outer frame part 12 of the intrusion prevention apparatus 10 is cut | disconnected radially toward the inward from the outer periphery. For this reason, a gap S into which the connection piece 32 of the clip 30 can be inserted is formed in the cutting part 12C.
On the other hand, in the vicinity of the cutting portion 12C, a holding portion 15 is formed that is bent so as to be slightly retracted in the indoor I direction. Accordingly, the sandwiching portion 15 is formed at a position that is separated from the other portion of the outer frame portion 12 by a minute distance in the tube axis direction. The clamping part 15 has substantially the same shape as the connection piece part 32 of the clip 30 and is formed slightly larger.

As shown in FIG. 6 (a), the intrusion prevention device 10 is pressed from the indoor I side against the connection piece 32, and is rotated from the first posture that can rotate along the inner periphery of the ventilation pipe 2. As shown to (b), it will be in the 2nd attitude | position mounted | worn in the ventilation pipe 2 via the clip 30 by rotating a little in the engagement direction (1st direction) R1.
That is, after the clamping portion 15 of the intrusion prevention device 10 is brought into close contact with the connection piece portion 32 of the clip 30 attached in advance to the ventilation pipe 2 in FIG. When rotated in the engagement direction R1 along the inner periphery, as shown in FIG. 6B, the connection piece 32 of the clip 30 is inserted into the gap S of the cutting part 12C, and the connection piece 32 is held by the clamping part 15. The intrusion prevention device 10 is fixed in the tube axis direction X of the ventilation pipe 2.
The outer frame portion 12 contacts the intrusion end 36 of the connection piece portion 32 and stops the rotation of the intrusion prevention device 10 in the engagement direction R1 at a predetermined position. A bent portion 16 is formed to prevent it from coming off.

Removal method of intrusion prevention device 10:
In order to remove the intrusion prevention device 10 in the attached state (second posture) shown in FIG. 3, a hand is inserted into the ventilation pipe 2 from the indoor I side, and the grip portion 14 of FIG. 4 is gripped. Thereafter, as shown in FIG. 6B, the intrusion prevention device 10 is rotated along the inner periphery of the ventilation pipe 2 in a release direction (second direction) R2 opposite to the engagement direction R1. By this rotation, the connection piece part 32 comes off from the cutting part 12C, and the engagement between the intrusion prevention device 10 and the connection piece part 32 is released. Then, as shown in FIG. 5, the intrusion prevention device 10 is pulled out toward the indoor I side and removed.

Installation method of intrusion prevention device 10:
In order to attach the intrusion prevention device 10, the holding portion 14 of FIG. 4 is held, and the intrusion prevention device 10 is inserted into the ventilation pipe 2 from the indoor I side as shown in FIG.
Thereafter, the intrusion prevention device 10 is slightly rotated in the circumferential directions R1 and R2 while pressing the intrusion prevention device 10 against the connection piece 32 of the clip 30, and the connection piece 32 is brought into contact with the sandwiching portion 15 in FIG. Let
Here, as described above, the sandwiching portion 15 is bent toward the indoor I side so as to be separated from the other portions of the outer frame portion 12 by a minute distance toward the indoor direction. Therefore, when the intrusion prevention device 10 is pressed against the connection piece portion 32 and rotated in the circumferential directions R1 and R2, the connection piece portion 32 enters the clamping portion 15. Therefore, the connection piece part 32 can be easily penetrated into the gap S of the cutting part 12C.

  Thereafter, the intrusion prevention device 10 is rotated in the engagement direction R1, and as shown in FIG. 6B, the intrusion end 36 of the connection piece portion 32 enters the gap S of the cutting portion 12C. Let the posture. With this rotation, the connection piece portion 32 is sandwiched between the sandwiching portion 15 and the outer frame portion 12, the intrusion end 36 contacts the bent portion 16, and the intrusion prevention device 10 is fixed to the clip 30.

Thus, according to the present invention, the intrusion prevention device 10 can be replaced from the indoor I side.
And since the clip 30 which pinches | interposes the protrusion part 2c of the ventilation pipe 2 is used, it can attach to ventilation pipes, such as a general vinyl chloride pipe, and can also attach to the existing ventilation pipe.

Further, since the burrs 33 of the clip 30 bite into the surface of the resin-made ventilation pipe 2, it is difficult for the clip 30 to fall off from the tip of the pipe 2. Therefore, the clip 30 can be securely fixed.
Furthermore, since the intrusion prevention device 10 can be exchanged by rotating the intrusion prevention device 10, it is not necessary to use a magnet or the like, so that the cost of the intrusion prevention device can be reduced.

Moreover, the outer frame part 12 does not need to be cylindrical, and can be created by punching a vent hole from a circular metal plate. Therefore, since it can be formed simply by punching a flat plate and pressing it, the cost can be greatly reduced.
By the way, when the base portion 25 is created, the outer fitting portion 29 is created by punching a metal plate into a circle in accordance with the circumference of the ventilation pipe 2. Therefore, an unnecessary circular portion is generated. Therefore, if the outer frame portion 12 is created using the punched circular plate, the cost can be further reduced.

Instead of the net 13, an insect repellent plate composed of a plate having a large number of holes may be used. Moreover, you may provide a draining part in the lower part of the said insect-proof board instead of providing the draining part 12a in the outer frame part 12. FIG.
Furthermore, it is not always necessary to provide the net 13 or the insect proof plate. Moreover, you may make it show an insecticidal effect by reducing the pitch between the crosspieces 12b instead of providing the net | network 13 and an insect-proof board separately.
Alternatively, either the clip 30 or the outer frame portion 12 may be formed of a magnetic material such as stainless steel and fixed using a permanent magnet.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily understand various changes and modifications within the obvious scope by looking at the present specification.
For example, the ventilation device may have a structure different from that of the ventilation device 1 shown in the first embodiment.
Accordingly, such changes and modifications are to be construed as within the scope of the present invention as defined by the claims.

  INDUSTRIAL APPLICABILITY The present invention can be used in a ventilator provided with a ventilation pipe that penetrates an outer wall to communicate the indoor side and the outdoor side.

It is a plane sectional view of a ventilator showing Example 1 of the present invention. It is a perspective view of an outdoor hood and a bird-proof board. (A) is a perspective view which shows the attachment state of an intrusion prevention apparatus, (b) is the expanded top view which shows the attachment state of a clip. It is a perspective view from the back of an intrusion prevention device. It is a perspective view which shows the state before attachment of an intrusion prevention apparatus, or after removal. It is a perspective view which shows the attachment / detachment method of an intrusion prevention apparatus.

Explanation of symbols

1: Ventilation equipment 2: Ventilation pipe 2c: Projection part 4: Outer wall 10: Intrusion prevention device 30: Clip 31: Clamping part 32: Connection piece part 33: Fuzzy part I: Indoor O: Outdoor Y: Thickness direction

Claims (4)

In the ventilator which provided the ventilation pipe which penetrates the outer wall and makes the indoor side and the outdoor side communicate with each other, protrudes one end of the ventilation pipe to the outdoor side, and covers the protruding part with a ventilation device,
An intrusion prevention device in which an intrusion prevention device for preventing insects and / or birds from invading from the ventilation pipe is set to a size that can be mounted in the ventilation pipe, and the intrusion prevention device can be attached and detached from the indoor side. The mounting structure of
A plurality of metal clips are fixed to the protruding portion of the ventilation pipe,
The clip includes a sandwiching portion that sandwiches the protrusion in the thickness direction of the ventilation pipe to fix the clip to the protrusion, and a connection piece that protrudes inward of the ventilation pipe,
A structure for mounting an intrusion prevention device in a ventilation device in which the intrusion prevention device is detachably fixed in a ventilation pipe via a connecting piece portion of the clip. In claim 1,
The clip sandwiching portion has a substantially U-shaped cross section and is formed in a plate spring shape sandwiching the projecting portion of the pipe by the elasticity of the metal material, and the clip bites into the surface layer of the pipe sandwiched by the sandwiching portion. It has a burrs that prevent it from falling off the tip of the pipe,
The connection piece part is an attachment structure for an intrusion prevention device in a ventilation device that protrudes from one end of the pinching part toward the inside of the pipe. In claim 1 or 2,
The intrusion prevention device moves from a first posture that is pressed against the connection piece portion from the indoor side and is rotatable to a second posture that engages the connection piece portion in the axial direction of the pipe in a first direction. By being rotated slightly, it is mounted in the pipe via the clip,
The second posture is slightly rotated in the second direction opposite to the first direction to return to the first posture, and the engagement state is released so that the pipe can be taken out from the pipe. An intrusion prevention device mounting structure in a ventilation device configured as described above. In claim 1, 2 or 3,
The intrusion prevention device has an outer frame portion obtained by punching a vent hole from a circular metal plate,
A part of the outer frame part is cut along the radial direction, and a vicinity part of the cutting part is set at a position separated by a minute distance in the tube axis direction with respect to the other part of the outer frame,
The attachment structure of the intrusion prevention device in the ventilation device in which the intrusion prevention device is fixed to the clip by positioning the connection piece portion between the vicinity portion and the other portion of the outer frame portion.

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