JP2005273980A - Connection member for ventilator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilator capable of changing a space between the opening of a ventilator body and an opening/closing plate covering the opening. <P>SOLUTION: This connection member 140 for the ventilator comprises a casing 141 having a protruded body 145 protruded toward the inside, a rod body 143 having a non-contact portion 147 having no contact with the protruded body 145 when inserted and slid into the casing 141, and a spring 142 for energizing the rod body 143 to be pushed out of the casing 141. The non-contact portion 147 of the rod body 143 is provided with a first protruded portion 148 and a second protruded portion 149. The protruded body 145 is selectively hooked on either recessed portions 150A, 150B formed in the second protruded portion 149 or the first protruded portion 148. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a connecting member for a ventilator, and more particularly to a connecting member for a ventilator used for a ventilator that is attached to ventilate a room.

  Due to recent advances in building technology, current buildings are highly airtight and thermally insulating, and in such highly airtight and highly heat insulating buildings, indoor moisture and dirty air are discharged. In general, vents are provided to allow outside air to enter the room.

Here, as described in Patent Documents 1 and 2, for example, a ventilator is generally attached to such a vent to open and close the vent.
Japanese Utility Model Sho 63-063640 Japanese Utility Model Sho 63-082138 JP-A 63-290339

  However, the conventional ventilator is formed by a ventilator main body having a cylindrical body attached to the vent and an opening / closing plate that covers the opening of the ventilator main body. You can only select the two states of closing the cover with the opening / closing plate or keeping the opening / closing plate away from this opening, and between the opening of the ventilator body and the opening / closing plate that covers this opening. It was not possible to change the interval and change the air flow.

  Then, this invention changes the space | interval between the opening part of a ventilator main body, and the opening-and-closing board which covers this opening part, and it aims at providing the connection member for ventilators which can change the air flow rate. And

  In order to solve the above problems, the present invention provides a ventilator main body having a cylindrical body having both ends open, a flange formed at one end of the cylindrical body, and the one end of the cylindrical body. In the ventilator connecting member that connects the opening and closing plate that covers the opening on the side, a variable distance mechanism that gradually increases or decreases the distance between the opening on the one end side and the opening and closing plate is provided. Provided is a connecting member for a ventilator.

  In this way, by connecting the ventilator body and the opening / closing plate by the ventilator connecting member having the variable distance mechanism, the distance between them can be adjusted, and the amount of air flowing between them can be adjusted. Will be able to change.

  As such a variable distance mechanism, one end in the axial direction is open and hollow, and a housing attached to either the ventilator body or the opening / closing plate, and the housing A rod-like body that is inserted into the inside of the housing from the opening and is slidable with respect to the housing, and is attached to the other of the ventilator main body and the opening / closing plate, and the rod-like body in a direction away from the housing And an elastically deformable convex body is formed on the inner wall of the housing, and the rod-shaped body has a plurality of concave portions to which the convex body is hooked. The rod-shaped body is formed in the sliding direction of the rod-shaped body, and when the rod-shaped body slides with respect to the housing, the convex-shaped body that is caught in any one of the plurality of recesses is elastically deformed and the recess From the other recesses that are adjacent to the recess. It can be configured to.

  By using such a variable distance mechanism, the distance between the ventilator main body connected by the ventilator connecting member and the opening / closing plate can be increased or decreased in stages.

  Here, the convex body can be elastically deformed only in a direction perpendicular to the sliding direction of the rod-shaped body, and when the rod-shaped body is slid by inserting the rod-shaped body into the housing, A non-contact portion that includes a trajectory that the convex body is displaced and that does not contact the convex body, and the non-contact portion has a convex shape at a first position where the housing and the rod-shaped body are farthest from each other. A first projecting portion that is caught by the body, and a rod-shaped body that is positioned on a track on which the convex body is displaced when the rod-shaped body is inserted and slid into the housing; A second position where the convex body is brought into contact with the convex body when displaced in the internal direction, the convex body is elastically deformed in one direction perpendicular to the sliding direction, and the housing and the rod-shaped body are closest to each other. The side that makes contact with the convex body when the rod-shaped body is displaced away from the housing and elastically deforms the convex body in the other direction perpendicular to the sliding direction Is formed and a second protruding portion having the recess is in the side wall of the one-way side, it can be formed so as to extend toward the inside of the second projecting portion.

  As described above, according to the present invention, the ventilator main body and the opening / closing plate are connected by the ventilator connecting member whose length is changed by selecting the concave portion to which the convex body is hooked. The air flow can be changed by changing the interval.

  FIG. 1 is an exploded perspective view of a ventilator 100 according to the first embodiment of the present invention.

  The ventilator 100 is formed by a ventilator main body 110, a net member 120, an opening / closing plate 130, and a ventilator connecting member 140.

  The ventilator main body 110 is formed by a cylindrical body 111 and a flange 112.

  The cylindrical body 111 is open at both ends, and is formed in a size and shape that can be fitted into a vent provided on a wall, for example, and in this embodiment, the vent has a circular cross section. However, it is not limited to such a shape.

  A flange 112 is formed on one end 111 a side of the cylindrical body 111 that is open at both ends so as to extend to the outside of the cylindrical body 111.

  Here, the flange 112 in the present embodiment is formed in a circular shape so that the peripheral edges are equally spaced from the cylindrical body 111 having a circular cross section, but is not limited to such a shape.

  The ventilator main body 110 formed in this way is inserted into a vent hole provided in a wall or the like from the other end 111b side of the cylindrical body 111, and the flange 112 is fixed by fixing means such as an adhesive, a screw, or a nail. It can be fixed to a wall or the like.

  A net member 120 can be attached to the ventilator main body 110 on the one end 111 a side of the cylindrical body 111.

  The mesh member 120 is formed by an outer frame 121 and a mesh 122 attached to the inner side of the outer frame 121.

  The mesh member 120 is formed in a size and shape that can cover the opening 113 on the one end 111a side of the cylindrical body 111. In the present embodiment, the cylindrical body 111 is formed in a cylindrical shape. Therefore, the outer frame 121 of the net member 120 is also formed to be circular.

  The net member 120 is for preventing insects and the like from entering the room through the vent holes, and is not necessarily required.

  In addition, a circular through hole 123 is formed in the center of the net member 120 to allow the ventilation member connecting member 140 described later to pass therethrough.

  The opening / closing plate 130 may be of any size and shape that can cover the opening 113 on the one end 111a side of the cylindrical body 111, but in this embodiment, the cylindrical body 111 is open. Is formed in a cylindrical shape, the opening / closing plate 130 is also formed in a circular shape.

  The ventilator main body 110 and the opening / closing plate 130 thus formed are connected by a ventilator connecting member 140.

  The ventilator connection member 140 is formed by a housing 141, a spring 142 as an urging member, and a rod-like body 143.

  The housing 141 is formed in a bottomed cylindrical shape having an opening 144 at one end 141a in the axial direction, and an internal space into which a rod-like body 143 (to be described later) can be inserted is formed inside the housing 141. Yes.

  A convex body 145 is formed on the inner wall 141c of the casing 141 so as to protrude in the inner direction of the casing 141.

  Although the convex body 145 is formed of an elastic resin, as shown in FIG. 3 (a front view of a part of the casing 141 and a part of the rod-like body 143), the convex body 145 in the width direction of the casing 141 is displayed. By forming the casing 141 such that the length Y in the axial direction of the casing 141 is larger than the length X, the direction perpendicular to the sliding direction of the rod-shaped body 143, in this embodiment, the casing 141 Elastic deformation can be performed only in the width direction.

  Note that a fixing protrusion 146 is provided on the inner side 141c of the housing 141 in order to prevent a rod-like body 143, which will be described later, from rotating about its axis inside the housing 141. It is formed so as to protrude.

  In the present embodiment, a spring 142 is used as an urging member that urges a rod-like body 143, which will be described later, from the inside of the casing 141.

  After the spring 142 is housed in the housing 141, the rod-shaped body 143 is housed in the housing 141, so that the spring 142 urges the rod-shaped body 143 in the direction of pushing out from the inside of the housing 141. Has been.

  It should be noted that the spring 142 has a biasing force that can maintain the state in which the rod-like body 143 and the casing 141 are biased even at a position where the rod-like body 143 described later and the bottom of the casing 141 are farthest apart. By using the one having the above, the rod-like body 143 and the housing 141 can be reliably fixed.

  The rod-shaped body 143 is formed to have a circular cross section as a whole as shown in FIG. 2 (a longitudinal sectional view when the rod-shaped body 143 is inserted into the housing 141). By forming a notch surface so as to extend in the axial direction of the rod-shaped body 143 so as not to contact the convex body 145 formed on the inner side 141c of the housing 141 when inserted inside, the convex body 145 The non-contact part 147 which does not contact is formed.

  A fitting recess 143a is formed on the opposite side of the rod-shaped body 143 from the non-contact portion 147 so as to extend in the axial direction of the rod-shaped body 143. The fitting recess 143a is formed on the inner wall 141c of the housing 141. By fitting the formed fixing protrusions 146, the rod-like body 143 can be prevented from rotating around its axis in the housing 141.

  The non-contact portion 147 is formed so as to include a track in which the convex body 145 formed on the inner side 141c of the housing 141 is displaced when the rod-like body 143 is inserted and slid into the housing 141. Has been.

  From the non-contact portion 147, as shown in FIG. 4 (partial perspective view of the rod-shaped body 143), the rod-shaped body 143 is inserted into the housing 141 and slid. 141 so that the first protrusion 148 and the second protrusion 149 protrude toward the outside of the rod-shaped body 143 on the trajectory on which the convex body 145 formed on the inner side 141c of the 141 moves. Is formed.

  When the rod-shaped body 143 is slid inside the housing 141, the first protrusion 148 is caught by the convex body 145 at the position where the other end of the housing 141 is farthest from the rod-shaped body 143. It is aligned and formed at such a height as to be caught by the convex body 145.

  In the present embodiment, the first protrusion 148 is formed so as to extend in a direction perpendicular to the sliding direction of the rod-shaped body 143 inside the housing 141, so that the first protrusion 148 and the convex are formed. The shape body 145 is reliably caught.

  The second projecting portion 149 is positioned on the track along which the convex body 145 moves when the rod-shaped body 143 is inserted and slid into the housing 141, and extends in the axial direction of the rod-shaped body 143. Is formed.

  And the side wall 149a which is a side wall of the 2nd protrusion part 149 and opposes the 1st protrusion part 148 is formed so that it may face the one direction side (A direction side of FIG. 3) of the rod-shaped body 143. Therefore, when the rod-like body 143 is moved into the housing 141 from the first position where the first protrusion 148 and the convex body 145 are caught, the inner wall 141c of the housing 141 is formed. When the convex body 145 comes into contact with the side wall 149a, it is elastically deformed, the catch between the second protrusion 149 and the convex body is eliminated, and the rod-shaped body 143 can be inserted into the housing 141. Has been.

  Further, the side wall 149b, which is the side wall of the second protrusion 149 and is opposite to the first protrusion 148, faces the other direction side (the B direction side in FIG. 3) of the rod-shaped body 143. Therefore, when the rod-shaped body 143 is slid inside the casing 141, the rod-shaped body 143 is moved from the position where the other end of the casing 141 and the rod-shaped body 143 are closest to each other to the outside of the casing 141. When the convex body 145 formed on the inner side 141c of the housing 141 is in contact with the side wall 149b, the convex body 145 is elastically deformed to the other side of the rod-shaped body 143. Thus, the catch between the second projecting portion 149 and the convex body 145 is eliminated, and the rod-shaped body 143 can be moved in the direction outside the housing 141.

  Therefore, when the convex body 145 is in a position where it is caught by the first protrusion 148, when the rod-shaped body 143 is moved in the direction of the inside of the housing 141, the convex body 145 becomes the second protrusion. By contacting the portion 149, the convex body 145 is elastically deformed in one direction side (A direction side in FIG. 3) of the rod-shaped body 143, while the rod-shaped body 143 and the housing 141 are closest to each other, that is, When the second protrusion 149 is located inside the housing 141 with respect to the convex body 145, when the rod-shaped body 143 is moved from the inside of the housing 141 to the outside, the convex body When the 145 comes into contact with the second projecting portion 149, the rod-like body 143 slides inside the housing 141 by elastically deforming to the other direction side (B-direction side in FIG. 3) of the rod-like body 143. Have been able to.

  Then, the side wall 149c on one side of the rod-like body 143 (A direction side in FIG. 3), which is the side wall of the second protrusion 149, extends toward the inside of the second protrusion 149. One concave portion 150A and second concave portion 150B are formed.

  The recesses 150A and 150B are located on the first protrusion 148 side, and are perpendicular to the direction in which the rod-like body 143 is pushed into the housing 141, and the tip of the first surface 150a. Therefore, the second surface 150b having an obtuse angle with respect to this direction is formed.

  Therefore, when the rod-shaped body 143 and the housing 141 are at the most distant positions, that is, at the position where the convex body 145 is caught by the first protrusion 148, the rod-shaped body 143 is moved in the direction toward the inside of the housing 141. When moved, the convex body 145 comes into contact with the second projecting portion 149, so that the convex body 145 is elastically deformed in one direction side (A direction side in FIG. 3) of the rod-shaped body 143. When the convex body 145 reaches the position where the concave portions 150A and 150B are provided, the side wall 149c that elastically deforms the convex body 145 is cut off, so that the convex body 145 is provided with the concave portions 150A and 150B. Hook inside.

  When the convex body 145 is caught inside these concave portions 150A and 150B, the convex body 145 is caught on the first surface 150a formed in the direction perpendicular to the moving direction of the rod-like body 143. .

  In addition, since these concave portions 150A and 150B are provided with a second surface 150b having an obtuse angle with respect to the direction in which the rod-shaped body 143 is inserted, the convex bodies 145 are caught in these concave portions 150A and 150B. In this state, the rod-shaped body 143 is moved in the direction of the inside of the casing 141, so that the convex body 145 is moved in one direction of the rod-shaped body 143 from the inside of the recesses 150A and 150B along the second surface 150b. It is pushed out to the side (A direction side in FIG. 3).

  As described above, in the ventilating member connecting member 140, the interval between the housing 141 and the rod-like body 143 is determined depending on whether the convex body 145 is hooked on the first protrusion 148 or the concave portions 150A and 150B. That is, the length of the ventilator connecting member 140 itself can be changed.

  The casing 141 is attached to the ventilator main body 110, and the rod-like body 143 is attached to the opening / closing plate 130, whereby the interval between them can be changed by the ventilator connecting member 140.

  The casing 141 is fixed via a spacer 160 so as to be concentric with the central axis of the tubular body 111 of the ventilator main body 110, and the rod-shaped body 143 is perpendicular to the opening / closing plate 130. As described above, the end of the rod-like body 143 opposite to the first protrusion 148 is fixed to the center of the opening / closing plate 130.

  In the embodiment described above, the convex body 145 is made of an elastic resin, and the length Y of the casing 141 in the axial direction is longer than the length X of the convex body 145 in the width direction of the casing 141. However, the present invention is not limited to this, and is not limited to such a width direction of the housing 141. Any material that can be elastically deformed only by chasing can be used.

  Moreover, in embodiment described above, although the two recessed parts 150A and 150B are provided in the 2nd protrusion part 149, about these numbers, arbitrary numbers can be selected.

  FIG. 5 is an exploded perspective view of a ventilator 200 according to the second embodiment of the present invention.

  The ventilator 200 is formed by a ventilator main body 210, a net member 220, an opening / closing plate 230, and a ventilator connecting member 240.

  The ventilator main body 210 is formed by a cylindrical body 211 and a flange 212.

  Similar to the first embodiment, the cylindrical body 211 is open at both ends, and is formed in a size and shape that can be fitted into a vent provided in a wall or the like.

  Here, in the present embodiment, a storage body 214 for detachably attaching a casing 241 of a ventilator connecting member 240 described later to the center of the cylindrical body 211 is provided on the inner wall 211c of the cylindrical body 211 with a spacer 215. Is attached through.

  The storage body 214 is formed in a box shape with a bottom that opens on the one end 111a side of the cylindrical body 111. By inserting a screw from the outside of the bottom toward the inside of the storage body 214, the housing 241 is formed. Can be attached detachably.

  A flange 212 is formed on the one end 211 a side of the cylindrical body 211 that is open at both ends so as to extend to the outside of the cylindrical body 211.

  As in the first embodiment, the ventilator main body 210 formed in this way is inserted into a vent provided on a wall or the like from the other end 211b side of the tubular body 211, and is bonded with adhesive, screws, nails. It can be fixed to a wall or the like via a flange 212 by a fixing means such as.

  Similarly to the first embodiment, the ventilator main body 210 in the present embodiment is configured such that the net member 220 can be attached to the one end 211a side of the cylindrical body 211, and the net member 220 in the present embodiment is also the same. As in the first embodiment, the outer frame 221 and the net 222 attached to the inner side of the outer frame 221 are formed.

  In the first embodiment, the circular through-hole 123 for passing the ventilator connecting member 140 is formed at the center of the mesh member 120. However, in the present embodiment, the ventilator is described later. Since the casing 241 of the connecting member 240 is formed in a prismatic shape, a square through hole 223 is formed at the center of the mesh member 220.

  The opening / closing plate 230 is formed in a size and shape that can cover the opening 213 on the one end 211a side of the cylindrical body 211. In the present embodiment, unlike the first embodiment, the flange 212 It is formed in a quadrilateral shape according to the shape.

  The ventilator main body 210 and the opening / closing plate 230 thus formed are connected by a ventilator connecting member 240.

  The ventilator connection member 240 is formed by a housing 241, a spring 242 as an urging member, and a rod-like body 243.

  The housing 241 is formed in a bottomed prismatic shape having an opening 244 at one end 241a in the axial direction, and an internal space into which a rod-shaped body 243 (to be described later) can be inserted is formed inside the housing 241. ing.

  The convex body 245 in this embodiment is attached to a plate-like body 245 b extending from the bottom 241 b of the housing 241 in the direction of the opening 244, and the tip of the plate-like body 245 b, and projects inward of the housing 241. And a convex body main body 245a.

  Since the plate-like body 245 b can be elastically deformed only in the width direction of the housing 241, the convex body 245 can be elastically deformed only in the width direction of the housing 241.

  In the present embodiment, as in the first embodiment, a spring 242 is used as a biasing member that biases a rod-shaped body 243 described later from the inside of the housing 241 in a pushing direction.

  The spring 242 is housed inside the housing 241 and then the rod-shaped body 243 is housed inside the housing 241 so that the spring 242 biases the rod-shaped body 243 in the direction of pushing out the inside of the housing 241. Has been.

  In this embodiment as well, the spring 242 maintains the state in which the rod-like body 143 and the casing 141 are biased even at a position where the rod-like body 243 described later and the bottom 241b of the casing 241 are farthest apart. By using the one having an urging force that can be used, the rod-like body 243 and the housing 241 can be reliably fixed.

  The rod-shaped body 243 is formed in a prismatic shape as shown in FIG. 6 (a longitudinal sectional view when the rod-shaped body 243 is inserted into the housing 241), but when it is inserted into the housing 241 In addition, a concave non-contact portion 247 is formed on the surface 243a of the rod-shaped body 243 facing the convex body 245 so as not to contact the convex body 245a of the convex body 245 formed on the housing 241. Yes.

  Here, the non-contact portion 247 is formed so as to include a track in which the convex body 245 formed in the housing 241 is displaced when the rod-like body 243 is inserted into the housing 241 and slid. Has been.

  From the non-contact portion 247, as shown in FIG. 7 (a front view of a part of the housing 241 and a part of the rod-shaped body 243) and FIG. 8 (a partial perspective view of the rod-shaped body 243), When the rod-shaped body 243 is inserted into the housing 241 and slid, the first projecting portion 248 and the second projecting portion are formed on the trajectory on which the convex body 245 formed on the housing 241 is displaced. The portion 249 is formed so as to protrude toward the outside of the rod-shaped body 243.

  The first protrusion 248 is formed close to the tip 243a of the rod-shaped body 243, and the position where the first protrusion 248 and the convex body 245a of the convex body 245 are caught is the housing 241. When the rod-shaped body 243 is slid inside the bottom portion 241b of the housing 241, the rod-shaped body 243 is positioned farthest away.

  In addition, the height of the 1st protrusion part 248 is formed in the height caught in the convex body main body 245a of the convex body 245. FIG.

  Also in the present embodiment, the first protrusion 248 is formed so as to extend in a direction perpendicular to the sliding direction of the rod-shaped body 243 inside the housing 241, so that the first protrusion 248 protrudes. The shape body 245 is surely caught.

  The second projecting portion 249 is formed so as to be positioned on a track on which the convex body 245 is displaced when the rod-shaped body 243 is inserted into the housing 241 and slid.

  A surface 249a that is one surface of the side wall of the second projecting portion 249 and faces the first projecting portion 248 is formed to face one direction side (C direction side in FIG. 7) of the rod-shaped body 243. Therefore, when the rod-shaped body 243 is moved into the housing 241 from the position where the convex body 245 is caught by the first protrusion 248, the convex body 245 formed on the housing 241 is By contacting the surface 249a, the plate-like body 245b is elastically deformed in one direction side of the rod-like body 243, so that the catch between the convex body 245 and the second projecting portion 249 is eliminated, and the rod-like body 245b is removed. The body 243 can be inserted into the housing 241.

  Further, the side wall 249b, which is the side wall of the second projecting portion 249 and is opposite to the first projecting portion 248, faces the other direction side (the D direction side in FIG. 7) of the rod-shaped body 243. Therefore, when the rod-shaped body 243 is slid inside the housing 241, the rod-shaped body 243 is moved from the position where the bottom 241b of the housing 241 is closest to the rod-shaped body 243 to the outside of the housing 241. When the convex body 245 formed on the housing 241 comes into contact with the side wall 249b and the plate-like body 245b is elastically deformed in the other direction side, the The hook between the second protrusion 249 and the convex body 245 is eliminated, and the rod-shaped body 243 can be moved in the direction outside the housing 241.

  Therefore, when the convex body 245 is in a position where it is caught by the first protrusion 248, when the rod-shaped body 243 is moved in the direction of the inside of the housing 241, the convex body 245 becomes the second protrusion. By contacting the portion 249, the plate-like body 245b is elastically deformed in one direction side (C direction side in FIG. 7) of the rod-like body 243, while the second protrusion 249 is a convex body of the convex body 245. When the rod-shaped body 243 is moved from the inside of the housing 241 to the outside when it is located inside the housing 241 with respect to the main body 245a, the convex body 245 contacts the second protrusion 249. As a result, the plate-like body 245b is elastically deformed in the other direction (D-direction side in FIG. 7), so that the rod-like body 243 can slide inside the housing 241.

  Then, on the side wall 249c on the one side of the rod-shaped body 243 (C direction side in FIG. 7), which is the side wall of the second protrusion 249, the second protrusion 249 extends toward the inside of the second protrusion 249. One recess 250A, a second recess 250B, and a third recess 250C are formed.

  Similar to the first embodiment, these recesses 250A, 250B, 250C are located on the first protrusion 248 side, and are perpendicular to the direction in which the rod-shaped body 243 is pushed into the housing 241. The surface 250a and the second surface 250b having an obtuse angle with respect to this direction from the tip of the first surface 250a are formed.

  Accordingly, when the convex body 245a of the convex body 245 is in a position where it is caught by the first protrusion 248, the convex body is moved when the rod-shaped body 243 is moved in the direction of the inside of the housing 241. When the 245 contacts the second protrusion 249, the convex body 245 is elastically deformed to one side of the rod-shaped body 243 (C direction side in FIG. 7). By reaching the provided position, the side wall 249c that elastically deforms the convex body 245 is cut off, so that the convex body 245 fits into these concave portions 250A, 250B, and 250C.

  When the convex body 245 enters the recesses 250A, 250B, and 250C, the convex shape of the convex body 245 is formed on the first surface 250a formed in the direction perpendicular to the moving direction of the rod-shaped body 243. The body main body 245a can be hooked.

  Since these concave portions 250A, 250B, and 250C are provided with a second surface 250b having an obtuse angle with respect to the direction in which the rod-shaped body 243 is inserted, the concave portions 250A, 250B, and 250C are convex. By moving the rod-shaped body 243 in the direction of the inside of the housing 241 in a state where the H.245 has entered, the convex body 245 is moved along the second surface 250b from the inside of the recesses 250A, 250B, 250C. The rod-shaped body 243 is pushed out to one direction side (C direction side in FIG. 7).

  As described above, in the ventilator connection member 240, the protrusion 245 is hooked on the first protrusion 248 or the recesses 250A, 250B, and 250C, so that the space between the housing 241 and the rod-like body 243 is reduced. That is, the length of the ventilator connecting member 240 itself can be changed.

  The casing 241 is attached to the ventilator main body 210 and the rod-like body 243 is attached to the opening / closing plate 230, whereby the interval between them can be changed by the ventilator connecting member 240.

  The housing 241 can be fixed to the ventilator main body 210 by being housed in a housing 214 formed on the tubular body 211 of the ventilator main body 210 and fastened with screws.

  Further, as shown in FIG. 9 (disassembled perspective view of the opening / closing plate 230 and the rod-like body 243), the rod-like body 243 has the fitting protrusion 231 formed at the center of the opening / closing plate 230 at the tip of the rod-like body 243. A fitting recess 260 formed in 243a is fitted into the opening / closing plate 230 so as to be detachable.

  In the embodiment described above, the three recesses 250A, 250B, 250C are provided in the second protrusion 249, but any number can be selected.

The disassembled perspective view of the ventilator 100 which concerns on 1st embodiment. The longitudinal cross-sectional view at the time of inserting the rod-shaped body 143 in the housing | casing 141. FIG. The front view of a part of housing | casing 141 and a part of rod-shaped body 143. FIG. The partial perspective view of the rod-shaped body 143. FIG. The disassembled perspective view of the ventilator 200 which concerns on 2nd embodiment. The longitudinal cross-sectional view at the time of inserting the rod-shaped body 243 in the housing | casing 241. FIG. The front view of a part of housing | casing 241 and a part of rod-shaped body 243. FIG. The partial perspective view of the rod-shaped body 243. FIG. The exploded perspective view of the opening-and-closing plate 230 and the rod-shaped body 243. FIG.

Explanation of symbols

100, 200 Ventilator 110, 210 Ventilator body 111, 211 Tubular body 112, 212 Flange 120, 220 Net member 130, 230 Opening and closing plate 140, 240 Ventilator connection member 141, 241 Housing 142, 242 Spring 143, 243 Rod-shaped body 145, 245 Convex-shaped body 147, 247 Non-contact portion 148, 248 First protrusion 149, 249 Second protrusion 150, 250 Recess

Claims (3)

A ventilator body having a cylindrical body having both ends opened, and a flange formed at one end of the cylindrical body;
An opening and closing plate that covers the opening on the one end side of the cylindrical body;
In the connecting member for ventilator that connects
A ventilator connection member comprising a distance variable mechanism that gradually increases or decreases the distance between the opening on the one end side and the opening / closing plate. The variable distance mechanism is
One end in the axial direction is open and hollow, and a housing attached to either the ventilator body or the opening / closing plate;
A rod-like body that is inserted into the housing from the opening of the housing and is slidable with respect to the housing, and is attached to the other of the ventilator body and the opening / closing plate;
A biasing member that biases the rod-shaped body in a direction away from the housing;
Consists of
A convex body that is elastically deformable is formed on the inner wall of the housing,
In the rod-shaped body, a plurality of recesses to which the convex body is caught are formed in the sliding direction of the rod-shaped body,
When the rod-shaped body slides with respect to the housing, the convex body that has been caught in any one of the plurality of concave portions is elastically deformed so as to be detached from the concave portion and to another concave portion adjacent to the concave portion. The ventilator connection member according to claim 1, wherein the ventilator connection member is caught. The convex body is elastically deformable only in a direction perpendicular to the sliding direction of the rod-shaped body,
The rod-like body includes a non-contact portion that includes a track that displaces the convex body when the rod-like body is inserted and slid into the housing, and that does not contact the convex body. ,
In the non-contact portion, a first projecting portion that is hooked on the convex body at a first position where the housing and the rod-shaped body are farthest from each other, and the rod-shaped body are inserted into the housing. The convex body is located on a trajectory that is displaced when slid, and contacts the convex body when the rod-shaped body is displaced from the first position toward the inside of the housing. The convex body is elastically deformed in one direction perpendicular to the sliding direction, and the rod-shaped body is moved away from the housing from a second position where the housing and the rod-shaped body are closest to each other. A second protrusion having a side wall that contacts the convex body when displaced and elastically deforms the convex body in the other direction perpendicular to the sliding direction;
The said recessed part is formed so that it may extend toward the inner side of said 2nd protrusion part in the said side wall of the said one direction side, The connection member for ventilators of Claim 2 characterized by the above-mentioned.

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