JP2015218961A - Ventilation register - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ventilation register capable of manually adjusting opening/closing of blade plates by an adjustment shaft disposed at a center, finely adjusting a ventilation amount, easily replacing a filter, and being easily manufactured while suppressing manufacturing costs.SOLUTION: A ventilation register has a hollow frame 30 opened at both ends, vertically extended on a wall surface A, and having a cylindrical face, a cam shaft 31 extended along a vertical axis X extending on the center of the frame vertically to the wall surface, and rotatably journaled to the frame, two blade plates 32 journaled to the frame through the cam shaft therebetween, and capable of blocking the hollow, a face portion 50 detachably covering a front opening 30a of the frame, and an adjustment shaft 51 journaled on a vertical shaft of the face portion and detachably connected to the cam shaft. The cam shaft has two spiral grooves 31b on a cylindrical face 31a on the vertical shaft X as a center. The blade plates have guide projections 32a fitted to the spiral grooves and movable along the spiral grooves by rotation of the cam shaft, and are rotated between a close position for blocking the hollow of the frame and an open position for opening the hollow by the movement of the guide projections.

Description

  The present invention relates to a ventilation register that is provided on a wall of a building as a ventilation port or an air supply port and is manually opened and closed.

  The ventilation register is attached to the wall surface of the room as a ventilation port or an air supply port in order to adjust the indoor temperature and to take outside air into the room. For example, Patent Documents 1 and 2 are known as ventilation registers capable of manually opening and closing a butterfly blade attached to the inside.

Japanese Patent Laid-Open No. 2001-268383 JP-A-7-260243

If the adjustment tool that adjusts the ventilation volume of the ventilation register is in the center of the ventilation register, the rotation of the adjustment tool is stable and easy to use, so users tend to prefer the one with the adjustment tool in the center of the ventilation register. There is.
However, as for the ventilation register which can manually open and close the butterfly type blades as disclosed in Patent Documents 1 and 2, the adjusting tool is provided at the lower end of the ventilation register.

  Conventionally, there is no manual ventilation register having an adjustment tool provided in the center, and the filter provided between the blade and the adjustment tool can be easily replaced. However, a filter is necessary in the ventilation register in order to take in clean air into the room. In order to maintain the function, the user needs to be able to easily replace the filter. Therefore, there has been a demand for a manual ventilation register that can easily replace the filter provided between the blade and the adjustment tool.

  In the ventilation register disclosed in Patent Document 2, the opening / closing operation member engaged with the engagement lever is formed of an elastic member, and the position of the engagement lever is shifted while the opening / closing operation member bends slightly due to elasticity. As a result, the blades open and close. With this configuration, since the opening / closing operation member cannot be stopped at the bent position, the blade plate can be stopped only at either the open position or the closed position. For this reason, the ventilation register of Patent Document 2 cannot finely adjust the opening and closing of the blades and cannot finely adjust the air flow rate.

  Further, the left and right blades used in the ventilation registers of Patent Documents 1 and 2 have different shapes. Therefore, in the ventilation registers of Patent Documents 1 and 2, two molds for the left and right wing plates are necessary, and the manufacturing cost is high for the molds.

  The present invention has been developed to solve the above-described problems. That is, the object of the present invention is to manually adjust the opening and closing of the blade with the adjustment shaft in the center, finely adjust the air flow, easily replace the filter when equipped with a filter, easily reduce the manufacturing cost, and easily It is to provide a ventilation register that can be manufactured.

According to the present invention, a frame having a hollow cylindrical shape centering on a vertical axis extending in the front-rear direction perpendicular to the wall surface and having both ends opened and fitted into hollow through-holes in the wall surface;
A camshaft extending along the vertical axis and rotatably fixed to the frame;
A register body having two blades sandwiched between the camshafts and rotatably supported by the frame and capable of blocking a hollow of the frame;
A face portion detachably covering the front opening on the front side of the frame;
A louver part having an adjustment shaft rotatably supported on the vertical axis of the face part and extending rearward along the vertical axis,
The adjusting shaft has a rear end portion detachably connected to a front end portion of the camshaft to transmit rotational power,
The cam shaft has two spiral grooves provided in a spiral shape on a cylindrical surface centering on the vertical axis,
The vane has a guide protrusion that fits into the spiral groove and is movable back and forth along the spiral groove by rotation of the cam shaft, and is closed to block the hollow of the frame by the movement of the guide protrusion. A ventilation register is provided that rotates between a position and an open position that opens the hollow.

Further, the vane has a virtual axis extending from one end to the other end parallel to the wall surface,
The two blades have the same shape as each other, sandwich the cam shaft between two virtual axes extending in parallel to each other, and rotate about the virtual axis while being rotated 180 degrees around the vertical axis. It is pivotally attached to the frame,
The guide protrusion protrudes from the virtual axis on the one end side with respect to the vertical axis.

The blades are semicircular main blades capable of blocking the hollow from the virtual axis to the inner peripheral surface of the frame;
A sub-blade having a semicircular cutout that cuts off the hollow between the two virtual shafts and passes the camshaft;
The main blade and the sub blade are connected on the virtual axis,
The auxiliary blade has an inner edge that is parallel to the virtual axis and offset toward the vertical axis;
The inner edge has a marginal step for the two auxiliary blades to overlap each other when the blades are in the closed position;
The main blades block the hollow from the virtual axis to the inner peripheral surface of the frame when the blades are in the closed position, and the vertical shafts when the blades are in the open position. Located in the vicinity of

  The edge step is staggered between the one end side and the other end side of the virtual axis from the vertical axis.

Further, the front end portion of the cam shaft and the rear end portion of the adjustment shaft constitute a detachable shaft joint,
The face portion covers the front opening on the front side of the frame through a filter,
The adjustment shaft passes through a central hole of the filter and is connected to the cam shaft.

Further, the auxiliary blade, when the blade is in the closed position, the shaft-side auxiliary blade extending parallel to the vertical axis from the virtual axis,
An edge side sub-blade extending from the end of the shaft side sub-blade on the side opposite to the imaginary axis toward the vertical axis in parallel to the wall surface;
The inner edge is an end portion of the edge side auxiliary blade.

  Further, the spiral groove has a locking recess at an end portion thereof, in which the guide projection is detachably fitted and locked when the blade is located at the closed position or the open position.

  The guide protrusion is made of a flexible or elastic synthetic resin.

In addition, the frame includes a step in the frame formed on the inner peripheral surface with a front inner diameter smaller than the rear inner diameter.
The outer edge of the main blade comes into contact with the step in the frame when the blade is in the closed position.

According to the ventilation register of the present invention described above, one shaft that opens and closes the wing plate is configured by fitting the adjustment shaft attached to the face portion and the cam shaft attached to the frame. In other words, in the ventilation register of the present invention, the adjustment shaft is detachably fitted to the cam shaft, and the adjustment shaft and the cam shaft function as one shaft. Then, by removing the louver part from the register body, the coupling between the adjustment shaft and the cam shaft is released, and by reattaching the louver part to the register body, the adjustment shaft and the cam shaft are engaged with each other so that it functions as one axis again. It is configured.
With this configuration, for example, even when the filter is attached to the ventilation register of the present invention, the old filter is removed from the back side (rear side) of the face part removed from the frame, and adjusted to the center hole of the new filter. By simply attaching the filter to the back side of the face part through the shaft and attaching the louver part to the register body again, the user can easily replace the filter.

Further, the guide protrusion is in contact with the inner surface of the spiral groove while moving in the spiral groove. Therefore, since the guide protrusion can be stopped in the middle of the spiral groove (between both ends of the spiral groove) by the frictional resistance generated between the guide protrusion and the spiral groove, the opening / closing state of the blade can be finely adjusted.
Thereby, the ventilation register | resistor of this invention can finely adjust the air volume which passes the hollow.

  In addition, when the adjustment shaft and the cam shaft of the present invention are fitted to each other and function as a single shaft, the adjustment shaft and the cam shaft are rotatably supported at two points of the face portion and the frame. Can rotate stably without shaking.

  Further, in the ventilation register of the present invention, since the guide projection protruding from the blade plate is movably fitted in the spiral groove provided on the cylindrical surface of the cam shaft, the cam shaft rotates around the vertical axis, The guide protrusion moves along the spiral groove. The vane is fixed to the frame. This allows the vane to rotate between a closed position that blocks the hollow of the frame and an open position that opens the hollow.

In addition, since the adjustment shaft and the cam shaft are provided at the center (on the vertical shaft) of the register body, the two wing plates can be formed in the same shape. Thereby, both of the two blades can be formed with one mold. That is, the ventilation register of the present invention can be manufactured by simply forming a plurality of blades with a single mold and attaching them to the frame while being rotated 180 degrees around the vertical axis.
Therefore, the manufacturing cost of the ventilation register of the present invention can be reduced as compared with the conventional ventilation register because the number of molds is small.

  Moreover, the groove | channel for guiding the guidance protrusion provided in the cylindrical surface of the cam shaft (helical groove) is helical. Therefore, when the cam shaft is formed by a mold, the cam shaft can be easily pulled out from the mold by pulling it in the axial direction of the vertical axis while twisting in accordance with the shape of the spiral groove. Therefore, the cam shaft of the present invention can be easily manufactured with a mold due to the shape having the spiral groove.

It is a perspective view of the ventilation register of this invention. It is an AA arrow line view of FIG. FIG. 3 is a partially enlarged view of FIG. 2. It is an exploded view of the ventilation register of the present invention. It is explanatory drawing of the louver part and filter of this invention. It is explanatory drawing of the register | resistor main body of this invention. It is explanatory drawing of the cam shaft of this invention. FIG. 7 is a DD arrow view of FIG. It is explanatory drawing of the blade board of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.

FIG. 1 is a perspective view of a ventilation register of the present invention. FIG. 2 is an AA arrow view of FIG. FIG. 3 is a partially enlarged view of FIG. FIG. 4 is an exploded view of the ventilation register of the present invention.
The ventilation register 1 of the present invention includes a register main body 3 that is fitted into a wall surface A, and a louver portion 5 that covers the opening of the register main body 3 in a detachable manner. As shown in FIGS. 2 and 4, the register main body 3 includes a frame 30, a cam shaft 31, and two wing plates 32.

  In the following description, an axis extending through the center of the cross section of the frame 30 by a plane parallel to the wall surface A and extending back and forth perpendicularly to the wall surface A is defined as a vertical axis X. Moreover, in the following description, the wall surface A side (indoor side) in the axial direction of the vertical axis X is defined as the front side, and the opposite side is defined as the rear side.

First, the louver unit 5 will be described.
FIG. 5 is an explanatory diagram of a louver unit and a filter according to the present invention. 5A is a side view, and FIG. 5B is an arrow view by a plane including the vertical axis X. FIG.

  As shown in FIG. 5B, the louver portion 5 has a face portion 50 and an adjustment shaft 51. As shown in FIG. 4, the louver portion 5 covers the opening of the register body 3 (that is, the front opening 30 a of the frame 30 described later) through the filter 7.

The face portion 50 is a cover that detachably covers a front opening 30a on the front side of a frame 30 (see FIGS. 2 and 4), which will be described later, fitted in the wall surface A. Is a portion that appears to be exposed on the surface of the wall surface A. A filter 7 having a central hole 7a at the center is attached to the back side (rear) of the face portion 50. The filter 7 is detachably provided between the face portion 50 and the register body 3 in a state where the adjustment shaft 51 is passed through the center hole 7a.
In addition, when using the ventilation register 1 of this invention, the filter 7 does not need to be attached.

  As shown in FIGS. 1 and 4, the face portion 50 is provided with a plurality of blades 50 a spaced from each other. A slit 50b is provided between the slats 50a to allow the inside and outside of the register body 3 to communicate with each other. The face portion 50 has a structure including the slats 50a and the slits 50b, so that the inside and outside of the register main body 3 (the hollow 30b of the frame 30) can be maintained while maintaining the scenery when the wall surface A is viewed from the room so that the inside of the register main body 3 cannot be seen. And the air permeability of the room is maintained.

  The face portion 50 of the embodiment shown in FIG. 1 is provided in a circular shape with the adjustment shaft 51 as the center. With this shape, a commercially available circular filter having a central hole at the center can be attached to the back side (rear side) of the face portion 50. Therefore, the ventilation register 1 according to the embodiment shown in FIG. 1 can reduce the manufacturing cost as much as a commercially available filter can be used.

  In addition, the shape of the face part 50 of this invention is not restricted to this, Other shapes may be sufficient, for example, a rectangle may be sufficient.

  Further, the blade 50a and the slit 50b of the embodiment shown in FIG. 1 are provided concentrically around the adjustment shaft 51, but the shapes of the blade 50a and the slit 50b of the present invention are not limited thereto. For example, the ventilation register 1 of the present invention may have a face portion 50 having a shape in which a plurality of slats 50a and slits 50b extending in a straight line are arranged in parallel.

  As shown in FIGS. 2 and 3, the face portion 50 has a first bearing hole 50 c on the vertical axis X that allows the adjustment shaft 51 to pass therethrough. The first bearing hole 50c is a hole having a cylindrical surface centered on the vertical axis X as its inner peripheral surface. The first bearing hole 50c has its inner peripheral surface slidably in contact with the outer peripheral surface of the adjustment shaft 51, thereby axially stopping the adjustment shaft 51 so as to be rotatable perpendicular to the wall surface A.

The adjustment shaft 51 is an axis extending along the vertical axis X that is fixed to the first bearing hole 50c of the face portion 50 so as to be rotatable about the vertical axis X.
For example, the adjustment shaft 51 of the present invention has a knob portion 52 and a joint portion 53.

  The knob portion 52 has a front end portion protruding from the first bearing hole 50c to the indoor side so that a person can turn it around the vertical axis X by hand. The knob portion 52 extends rearward along the vertical axis X, and the rear end portion is coupled to the joint portion 53.

  The joint 53 has a front end coupled to an end on the rear side (register body 3 side) of the knob 52 and rotates about the vertical axis X in synchronization with the rotation of the knob 52.

  For example, as shown in FIGS. 2, 3, and 5 (B), the knob portion 52 and the joint portion 53 are coupled to each other with the key 54 and the key groove 55, so that the knob portion 52 centering on the vertical axis X is used. May be transmitted to the joint portion 53. The key 54 may be provided on the joint portion 53 or on the knob portion 52. Similarly, the key groove 55 may be provided in the knob portion 52 or the joint portion 53 as long as the key groove 55 is fitted to the key 54. As long as the rotational power of the knob portion 52 can be transmitted to the joint portion 53, the knob portion 52 and the joint portion 53 may be coupled by other methods.

  In the embodiment shown in FIGS. 2, 3, and 5 (B), the knob portion 52 and the joint portion 53 are combined to form the adjustment shaft 51. The part 52 and the joint part 53 may be integrally formed.

  As shown in FIGS. 2, 3, and 5A, the end on the rear side of the joint portion 53 (that is, the end on the cam shaft 31 side described later, hereinafter simply referred to as the rear end portion 53a) is the face portion. It protrudes rearward from 50 first bearing holes 50c. The rear end portion 53a of the joint portion 53 is configured with a shaft joint that is detachably engaged with a shaft joint provided at a front end portion (hereinafter referred to as a front end portion 31c) of the cam shaft 31 described later. With this configuration, the rear end portion 53 a of the joint portion 53 is detachably connected to the front end portion 31 c of the cam shaft 31, and transmits the rotational power of the joint portion 53 about the vertical axis X to the cam shaft 31.

  A cylindrical protrusion 53b that fits into a cylindrical hole 31g having a cylindrical shape provided in the front end portion 31c of the camshaft 31 is provided on the rear end portion 53a of the joint portion 53. The cylindrical protrusion 53b has a cylindrical surface centered on the vertical axis X as its outer peripheral surface.

Next, the register body 3 will be described.
FIG. 6 is an explanatory diagram of the register body of the present invention. 6A is a plan view when viewed from the front, and FIG. 6B is a view taken along the line BB in FIG. 6A.

The register body 3 includes a frame 30, a cam shaft 31, and two wing plates 32.
The frame 30 of the present invention has a hollow cylindrical frame portion 30e extending perpendicularly to the wall surface A and having a cylindrical surface centered on the vertical axis X. The frame 30 has a hollow 30b inside the frame portion 30e, and both ends thereof are open.

  The frame 30 has a flange 30f extending in the radial direction away from the vertical axis X in a front opening (hereinafter simply referred to as a front opening 30a). As shown in FIG. 2, the frame 30 is fixed to the wall surface A with the flange portion 30 f exposed to the surface of the wall surface A in a state where the frame portion 30 e is fitted in the hollow through hole of the wall surface A. In addition, in the state where the face part 50 is attached, the face part 50 covers the collar part 30f.

  As shown in FIG. 6B, the inner peripheral surface 30d of the frame 30 is provided with a locking portion 30g on the virtual axis M, which will be described later, for pivotally locking the blade 32. The ventilation register 1 of the embodiment shown in FIG. 6B has a presser 38 that fits into the locking portion 30g. The locking portion 30g has a cylindrical surface extending in parallel with the virtual axis M protruding from the inner peripheral surface 30d of the frame 30. The ventilation register 1 of the embodiment shown in FIG. 6 (B) rotates the wing plate 32 by sandwiching a shaft protrusion 32b protruding perpendicularly to the vertical axis X from the wing plate 32 with a locking portion 30g and a presser 38. It is fixed to the frame 30 as possible.

  Note that the method of locking the blade plate 32 with respect to the frame 30 is not limited to this as long as the blade plate 32 is rotatably supported. For example, as a method in which the frame 30 fixes the vane plate 32, a recess for fitting the tip of the shaft protrusion 32b may be provided on the inner peripheral surface 30d of the frame 30. Alternatively, a protrusion protruding toward the blade plate 32 may be provided on the inner peripheral surface 30 d of the frame 30, and the protrusion may be fitted in a recess provided in the blade plate 32. Alternatively, the frame portion 30e and the blade plate 32 on the virtual axis M are provided with holes along the virtual axis M, and a shaft such as a wire is passed through the holes of the frame portion 30e and the blade plate 32, whereby the frame portion 30e. Alternatively, the vane plate 32 may be pivotally supported.

  Further, the frame 30 has a second bearing hole 30h on the vertical axis X for axially locking the camshaft 31. The second bearing hole 30h of the embodiment shown in FIGS. 2 and 6 is a hole provided in the support rod 30i that crosses the hollow 30b in the frame portion 30e and is orthogonal to the vertical axis X as shown in FIG. The inner peripheral surface has a cylindrical surface centered on the vertical axis X. The support rod 30i is preferably provided in parallel to the virtual axis M. As a result, the support rod 30 i does not hinder the ventilation in the frame 30. However, the support rod 30i may not be provided in parallel with the virtual axis M. The shape of the support rod 30i may be any other shape as long as the second bearing hole 30h can be provided on the vertical axis X without obstructing the ventilation of the openings at both ends of the frame 30.

  Further, the frame 30 preferably has a frame inner step 30c formed on the inner peripheral surface 30d thereof in which the front inner diameter is smaller than the rear inner diameter in the axial direction of the vertical axis X.

As shown in FIG. 3, the cam shaft 31 is a shaft that is rotatably supported in the second bearing hole 30 h of the frame 30 and extends forward (to the face portion 50 side) along the vertical axis X.
The cam shaft 31 has a cylindrical surface 31 a centered on the vertical axis X, and has a front end portion 31 c that can be connected to the rear end portion 53 a of the adjustment shaft 51 in front of the cylindrical surface 31 a.

  The front end portion 31c of the cam shaft 31 constitutes a shaft coupling that meshes with the rear end portion 53a of the adjustment shaft 51 so as to be detachable. That is, the rear end portion 53 a of the adjustment shaft 51 can be fitted to the front end portion 31 c of the cam shaft 31 by moving the adjustment shaft 51 rearward in the axial direction of the vertical axis X. Similarly, the rear end portion 53 a of the adjustment shaft 51 can be removed from the front end portion 31 c of the cam shaft 31 by moving the adjustment shaft 51 forward in the axial direction of the vertical axis X.

FIG. 7 is an explanatory diagram of the cam shaft of the present invention. 7A is a side view, and FIG. 7B is a CC arrow view of FIG. 7A.
It is preferable that the front end portion 31c of the cam shaft 31 and the rear end portion 53a of the adjustment shaft 51 each have, for example, irregularities that mesh with each other as shown in FIGS. Alternatively, for example, a convex portion may be provided on one of the front end portion 31c of the cam shaft 31 and the rear end portion 53a of the adjustment shaft 51, and a concave portion into which the convex portion is fitted may be provided on the other side.

  The shape of the front end portion 31c of the cam shaft 31 and the rear end portion 53a of the adjustment shaft 51 is such that the cam shaft 31 and the adjustment shaft 51 can be attached and detached and the rotational power of the adjustment shaft 51 can be transmitted to the cam shaft 31. Others are acceptable as long as they are present.

  The front end portion 31c of the cam shaft 31 is provided with a cylindrical hole 31g having a cylindrical shape having a cylindrical surface centered on the vertical axis X as an inner peripheral surface. The cylindrical hole 31g is fitted to the cylindrical protrusion 53b of the adjustment shaft 51.

  Thereby, the adjustment shaft 51 and the cam shaft 31 are integrally fitted and function as a single shaft. Further, the shaft in which the adjustment shaft 51 and the cam shaft 31 are coupled to each other is fixed at two locations, that is, the first bearing hole 50 c of the face portion 50 and the second bearing hole 30 h of the frame 30. Therefore, the adjustment shaft 51 and the cam shaft 31 that are integrated with each other can stably rotate about the vertical axis X without shaking.

The cam shaft 31 preferably has a contact protrusion 31 h that protrudes from the cylindrical surface 31 a in the radial direction about the vertical axis X. The contact protrusion 31 h is provided at a position in contact with the blade plate 32.
In the ventilation register 1 of the present invention, when the blade 32 is in the closed position P, the surface on the front side of the contact protrusion 31h and a part of the blade 32 are in close contact with each other. Can be obtained.

  The cam shaft 31 has two spiral grooves 31b provided in a spiral shape on the cylindrical surface 31a.

FIG. 8 is a DD arrow view of FIG. 8A is a view when the blade 32 is in the closed position P, and FIG. 8B is a view when the blade 32 is in the open position Q. FIG. For the sake of explanation, the drawing of the cross section of the frame 30 is omitted in FIG.
A guide projection 32a of a vane plate 32 to be described later is fitted so that its tip 32e (see FIG. 9 to be described later) can move in these spiral grooves 31b. Then, when the cam shaft 31 rotates about the vertical axis X, the guide protrusion 32a of the blade plate 32 moves in the front-rear direction along the spiral groove 31b.

  In addition, the width of the spiral groove 31b is formed larger than the thickness of the guide protrusion 32a so that the bending caused by the movement of the guide protrusion 32a of the blade plate 32 in the direction orthogonal to the vertical axis X can be absorbed.

  In the following description, as shown in FIG. 7A, one end of the spiral groove 31b is set as a starting point 31e, and the other end is set as an end point 31f. Further, as shown in FIG. 8, the blade 32 is located in a closed position P or an open position Q described later when the guide projection 32a is located at the starting point 31e or the end point 31f.

  The two spiral grooves 31b have the same shape as each other, and are provided on the cylindrical surface 31a in a state of being rotated 180 degrees with respect to the vertical axis X. That is, as shown in FIG. 7B, the starting point 31e of one helical groove 31b of the two helical grooves 31b is located on the opposite side of the vertical axis X of the starting point 31e of the other helical groove 31b. Similarly, the end point 31f of one spiral groove 31b of the two spiral grooves 31b is located on the opposite side across the vertical axis X of the end point 31f of the other spiral groove 31b. In other words, in the sectional view of the cam shaft 31 passing through the starting point 31e by a plane parallel to the wall surface A (see the arrow view in FIG. 7B), the two starting points 31e and the vertical axis X of the two spiral grooves 31b are They are aligned on a straight line with the vertical axis X in between. Similarly, in the sectional view of the cam shaft 31 passing through the end point 31f by a plane parallel to the wall surface A, the two end points 31f and the vertical axis X of the two spiral grooves 31b are aligned on a straight line with the vertical axis X in between. .

  A recess (hereinafter referred to as a locking recess 31d) is provided at the starting point 31e or the end point 31f of the spiral groove 31b. The guide protrusion 32a of the vane plate 32 is detachably fitted and locked in the locking recess 31d of the spiral groove 31b.

  Since the ventilation register 1 of the present invention has the locking recess 31d at the starting point 31e or the end point 31f of the spiral groove 31b, the wings from the hand feel transmitted from the adjustment shaft 51 when the guide protrusion 32a is fitted into the locking recess 31d. The user can confirm that the plate 32 is in the closed position P or the open position Q.

  The vane plate 32 of the present invention is a plate that is rotatably supported by the frame 30 and can block the hollow 30 b of the frame 30. As shown in FIG. 8A, when the blade 32 is located at the closed position P, the blade 30 blocks the hollow 30 b of the frame 30.

  FIG. 9 is an explanatory view of a blade according to the present invention. FIG. 9A is a plan view when the blade 32 in the closed position P is viewed from the rear. 9B is a view taken along the line E-E in FIG. 9A, and FIG. 9C is a view taken along the line F-F in FIG. 9A.

  The blade 32 has a virtual axis M extending from one end m1 to the other end m2 in parallel with the wall surface A, and rotates around the virtual axis M. For example, the shaft 32 of the blade plate 32 is stopped by two shaft protrusions 32b in which the blade plate 32 protrudes in opposite directions from both ends of the blade plate 32 along the virtual axis M as in the embodiment shown in FIG. As shown in FIG. 8, the front and rear of the shaft protrusion 32b are rotatably sandwiched between a locking portion 30g provided on the virtual axis M of the inner peripheral surface 30d of the frame 30 and the presser 38. It may be a thing. However, the present invention is not limited to this, and the blade 32 may be fixed to the frame 30 by other methods as described above.

  As shown in FIG. 8, the ventilation register 1 of the present invention has two blades 32 in the hollow 30 b of the frame 30. The two virtual axes M of the two blades 32 extend parallel to each other with the cam shaft 31 interposed therebetween. Each of the two blades 32 rotates around each virtual axis M.

  As shown in FIG. 9, the vane plate 32 includes a main vane plate 33, a sub vane plate 34, and a guide projection 32a. The main wing plate 33, the sub wing plate 34, and the guide projection 32a are connected on the virtual axis M. The main wing plate 33, the sub wing plate 34, and the guide projection 32a are preferably formed integrally. However, the present invention is not limited to this, and the blade 32 may be formed by combining the main blade 33, the sub blade 34, and the guide protrusion 32a.

  As shown in FIG. 9A, the main wing plate 33 of the present invention can block the hollow 30b from the imaginary axis M to the inner peripheral surface 30d of the frame 30, and the outer edge 33a thereof is the cylindrical inner shape of the frame 30. It is a semicircular plate that fits the peripheral surface 30d. When the wing plate 32 is attached to the frame 30, the main wing plate 33 is located behind the in-frame step 30 c of the frame 30. The main wing plate 33 rotates around the virtual axis M in the range behind the step 30c in the frame.

  As shown in FIG. 8 (A), when the blade 32 is in the closed position P, the front surface of the outer edge 33a of the main blade 33 is in contact with the rear surface (hereinafter referred to as the rear surface) of the step 30c in the frame. Touch.

  Usually, the wind passing through the inside of the ventilation register 1 passes from the rear (outside of the room) toward the front (inside of the room). The ventilation register 1 of the present invention is configured such that the main wing plate 33 is provided behind the step 30c in the frame, so that the main wing plate 33 is pushed by the wind from the rear to the front and is pressed against the rear surface of the step 30c in the frame. As a result, the front surface of the outer edge 33a of the main wing plate 33 and the rear surface of the step 30c in the frame are brought into close contact with each other, and the sealing property of the hollow 30b of the frame 30 when the wing plate 32 is closed (the shielding property of the wing plate 32). It is increasing.

  On the other hand, when the vane plate 32 is in the open position Q, the outer edge 33a of the main vane plate 33 is located at a position close to the vertical axis X as shown in FIG. Thereby, the main wing plate 33 becomes substantially parallel to the vertical axis X, and the hollow 30b of the frame 30 can be opened.

As shown in FIG. 8A, the sub blade 34 is a plate that blocks the hollow 30b between the two virtual axes M. The sub-blade 34 is provided with a semicircular cutout 34a through which the camshaft 31 passes as shown in FIG. The auxiliary blade 34 of the embodiment shown in FIG. 8A includes an axial side auxiliary blade 36 that extends parallel to the vertical axis X from the virtual axis M and the axial side auxiliary blade 36 when the blade 32 is in the closed position P. And an edge side auxiliary blade 37 extending from the end 36a of the blade 36 on the side opposite to the imaginary axis to the vertical axis X in parallel to the wall surface A. That is, the shaft side auxiliary blade 36 and the edge side auxiliary blade 37 are substantially orthogonal to each other.
However, the shape of the sub blade 34 according to the present invention may be other shapes as long as the shape can block the hollow 30b between the two virtual axes M.

  When the blade 32 is in the closed position P, the contact portion 34b (see FIG. 9A), which is the rear side surface around the notch 34a of the sub blade 34, is in contact with the camshaft 31. Abuts in front of the protrusion 31h and comes into close contact therewith. Thereby, the ventilation register 1 of the present invention can improve the sealing performance (the blocking performance of the hollow 30b of the frame 30) when the blade 32 is in the closed position P.

  As shown in FIG. 6A, the sub blade 34 has an inner edge 35 that is parallel to the imaginary axis M and offset to the vertical axis X side. In the embodiment shown in FIGS. 8 and 9, the inner edge 35 is an edge located at the end of the edge side auxiliary blade 37.

  When a virtual line that intersects with the vertical axis X and is parallel to the virtual axis M is defined as a virtual line N, as shown in FIG. 6A, one of the two blades 32 of the ventilation register 1 of the present invention is provided. The sub wing plate 34 of the wing plate 32 blocks the air permeability of the hollow 30b of the frame 30 from one imaginary axis M to the imaginary line N, and the sub wing plate 34 of the other wing plate 32 is the other imaginary axis. The air permeability of the hollow 30b of the frame 30 from M to the virtual line N is blocked.

  As shown in FIG. 9, the inner edge 35 is provided with an edge step 35 a in the thickness direction of the sub blade 34. The edge steps 35a of the two blades 32 overlap each other when the blades 32 are in the closed position P, and prevent ventilation in the front-rear direction. Thus, the ventilation register 1 of the present invention can block the hollow 30b of the frame 30 with no gap between the two sub blades 34.

  With these configurations, the vane plate 32 of the present invention can block the hollow 30b of the frame 30 with no gap between the main vane plate 33 and the sub vane plate.

  The guide protrusion 32a is a protrusion whose tip 32e is fitted in the spiral groove 31b, and protrudes from the virtual axis M on one end m1 side of the vertical axis X of the blade 32. The guide protrusion 32 a has a rod-like insertion protrusion 32 d extending in a direction parallel to the virtual axis M toward the cam shaft 31, and a connecting shaft part 32 c that connects the insertion protrusion 32 d and the virtual axis M. For example, in the embodiment shown in FIG. 9, the connecting shaft portion 32c is provided orthogonal to the virtual axis M, but the shape of the guide protrusion 32a of the present invention is not limited to this. The shape of the guide projection 32a is a position spaced from the virtual axis M, and the tip 32e of the guide projection 32a (that is, the tip 32e of the insertion projection 32d in the embodiment shown in FIG. 9) is placed at a position that fits into the spiral groove 31b. As long as the shape can be fixed, other shapes may be used.

  With this configuration, the guide protrusion 32a moves in the front-rear direction along the spiral groove 31b as the cam shaft 31 rotates about the vertical axis X. Since the distance between the tip 32e of the guide protrusion 32a (that is, the tip 32e of the fitting protrusion 32d) and the virtual axis M does not change and the position of the virtual axis M is fixed, the guide protrusion 32a extends along the spiral groove 31b. The guide protrusion 32a rotates about the virtual axis M as it moves back and forth. Thereby, the direction (angle) of the connecting shaft portion 32c with respect to the virtual axis M changes. As a result, the vane plate 32 rotates about the virtual axis M.

  With this configuration, the ventilation register 1 of the present invention has a blade between the closed position P where the hollow 30b of the frame 30 is blocked and the open position Q where the hollow 30b is opened due to the movement of the guide protrusion 32a due to the rotation of the cam shaft 31. The plate 32 can rotate about the virtual axis M.

  The tip 32e of the fitting protrusion 32d is preferably cylindrical so that it does not get caught when rotating in the spiral groove 31b. Moreover, it is preferable that the guide protrusion 32a is formed of a flexible or elastic material such as a synthetic resin so as to absorb the bending caused by the movement of the guide protrusion 32a in the direction perpendicular to the vertical axis X.

The guide protrusion 32a absorbs the bending caused by the movement in the direction orthogonal to the vertical axis X by the flexibility or elasticity of the material (for example, synthetic resin) of the guide protrusion 32a. Therefore, the guide protrusion 32a is in contact with the inner surface of the continuous spiral groove 31b while moving in the spiral groove 31b. With this configuration, because the frictional resistance generated between the guide protrusion 32a and the spiral groove 31b can stop the guide protrusion 32a in the middle of the spiral groove 31b (between both ends of the spiral groove 31b), the opening / closing state of the blade 32 Can be fine-tuned.
Thereby, the ventilation register 1 of the present invention can finely adjust the air volume passing through the hollow 30b.

  Moreover, it is preferable that the two blades 32 of the ventilation register 1 of the present invention are formed in the same shape. In this case, one blade 32 is pivoted at a position rotated 180 degrees around the vertical axis X from the position where the other blade 32 is pivoted. In other words, for example, in the embodiment shown in FIG. 6 (A), one blade 32 (the right blade 32 in FIG. 6 (A)) has one end m1 of the virtual axis M upward and the other end m2 downward. When the frame 30 is fixed to the frame 30, the other blade 32 (the left blade 32 in FIG. 6A) has one end m1 of the virtual axis M downward and the other end m2 upward. In this state, it is fixed to the frame 30. In other words, one blade 32 and the other blade 32 attached to the frame 30 are in a point-symmetric relationship with respect to the vertical axis X.

  Further, it is preferable that the edge step 35a of the sub blade plate 34 is staggered from the vertical axis X on one end m1 side and the other end m2 side of the virtual axis M. That is, for example, the edge step 35a on the one end m1 side of the virtual axis M shown in FIG. 9A has a front surface longer than the rear surface, and the edge step 35a on the other end m2 side is The front surface is shorter than the rear surface. In other words, for example, in the embodiment shown in FIG. 6A, when the two blades 32 in the closed position P are viewed from the front (inside the room), the edge step 35a of the sub blade 34 is The sub wing plate 34 of the right wing plate 32 is located on the front side above the shaft 31, and the sub wing plate 34 of the left wing plate 32 is located on the front side below the cam shaft 31.

In the ventilation register 1 of the present invention, the adjustment shaft 51 and the cam shaft 31 are in the center (on the vertical axis X) of the register body 3, and the two spiral grooves 31b of the cam shaft 31 are 180 degrees from each other about the vertical axis X. Since it is provided in the rotated position, the two blades 32 can be formed in the same shape. Thereby, both vanes 32 can be formed with one mold. That is, the ventilation register 1 of the present invention can be manufactured by simply forming a plurality of blade plates 32 with one mold and attaching them to the frame 30 while rotating them 180 degrees around the vertical axis X.
For this reason, the ventilation register 1 of the present invention can be manufactured at a lower cost than the conventional ventilation register because the number of molds is small.

Further, the ventilation registers of Patent Documents 1 and 2 described above may cause a gap between the two closed blades. On the other hand, in the ventilation register 1 of the present invention, the edge step 35a is provided on the inner edge 35 of the sub blade 34, and when the blade 32 is in the closed position P, the two edge steps 35a overlap each other. It is difficult for a gap to be formed between the two blades 32.
Therefore, the ventilation register 1 of the present invention can improve the sealing performance (the blocking performance of the hollow 30b of the frame 30) as compared with the conventional ventilation register.

According to the ventilation register 1 of the present invention described above, the adjustment shaft 51 attached to the face portion 50 and the cam shaft 31 attached to the frame 30 are fitted to each other to open and close the blade plate 32. Configure the axis. In other words, in the ventilation register 1 of the present invention, the adjustment shaft 51 is detachably fitted to the cam shaft 31, and the adjustment shaft 51 and the cam shaft 31 function as one shaft. Then, by removing the louver part 5 from the register body 3, the adjustment shaft 51 and the cam shaft 31 are disconnected, and by attaching the louver part 5 to the register body 3 again, the adjustment shaft 51 and the cam shaft 31 are engaged with each other. It is comprised so that it may function as one axis | shaft.
With this configuration, for example, even when the filter 7 is attached to the ventilation register 1 of the present invention, the old filter 7 is removed from the back side (rear side) of the face portion 50 removed from the frame 30, and a new filter is obtained. The user can easily replace the filter 7 simply by attaching the filter 7 to the back side of the face portion 50 through the adjustment shaft 51 in the central hole 7a of the 7 and attaching the louver portion 5 to the register body 3 again.

Further, the guide protrusion 32a is in contact with the inner surface of the continuous spiral groove 31b while moving in the spiral groove 31b. Therefore, the guide protrusion 32a can be stopped in the middle of the spiral groove 31b (between both ends of the spiral groove 31b) by the frictional resistance generated between the guide protrusion 32a and the spiral groove 31b. Can be adjusted.
Thereby, the ventilation register 1 of the present invention can finely adjust the air volume passing through the hollow 30b.

  Further, when the adjustment shaft 51 and the cam shaft 31 of the present invention are fitted to each other and function as a single shaft, the adjustment shaft 51 and the cam shaft 31 are rotatably supported at two points of the face portion 50 and the frame 30. The cam shaft 31 can rotate stably without shaking.

  Further, in the ventilation register 1 of the present invention, since the guide projection 32a protruding from the blade 32 is movably fitted in the spiral groove 31b provided on the cylindrical surface 31a of the cam shaft 31, the cam shaft 31 is connected to the vertical axis X. , The guide protrusion 32a moves back and forth along the spiral groove 31b. The vane plate 32 is fixed to the frame 30. Thereby, the vane plate 32 can rotate between a closed position P for blocking the hollow 30b of the frame 30 and an open position Q for opening the hollow 30b.

Further, in the ventilation register 1 of the present invention, since the adjustment shaft 51 and the cam shaft 31 are provided at the center (on the vertical axis X) of the register body 3, the two blades 32 can be formed in the same shape. . Thereby, both of the two blades 32 can be formed with one mold. That is, the ventilation register 1 of the present invention can be manufactured simply by forming a plurality of vanes 32 with one mold and attaching them to the frame 30 while rotating them 180 degrees around the vertical axis X. .
For this reason, the ventilation register 1 of the present invention can be manufactured at a lower cost than the conventional ventilation register because the number of molds is small.

  Further, a groove (spiral groove 31b) provided on the cylindrical surface 31a of the cam shaft 31 for guiding the guide protrusion 32a is helical. Therefore, when the cam shaft 31 is formed by a mold, the cam shaft 31 can be easily pulled out from the mold by pulling out in the axial direction of the vertical axis X while twisting in accordance with the shape of the spiral groove 31b. Therefore, the cam shaft 31 of the present invention can be easily manufactured with a mold due to the shape having the spiral groove 31b.

  Note that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

1 Ventilation register, 3 register body, 5 louver part,
7 Filter, 7a Center hole,
30 frame, 30a front opening, 30b hollow, 30c step in frame,
30d inner peripheral surface, 30e frame part, 30f collar part, 30g locking part,
30h second bearing hole, 30i support rod,
31 cam shaft, 31a cylindrical surface, 31b spiral groove, 31c front end,
31d Locking depression, 31e starting point, 31f end point,
31g Cylindrical hole, 31h Contact protrusion,
32 wing plate, 32a guide projection, 32b shaft projection,
32c connecting shaft part, 32d fitting projection part, 32e tip,
33 main wing plate, 33a outer edge,
34 sub blade, 34a notch, 34b contact part,
35 inner edge, 35a edge step,
36 axis side auxiliary blade, 36a end portion on the side opposite to the virtual axis,
37 Edge side auxiliary wing plate, 38 Presser,
50 face part, 50a slat, 50b slit, 50c first bearing hole,
51 Adjustment shaft, 52 Knob,
53 joint part, 53a rear end part, 53b cylindrical projection,
54 keys, 55 keyways,
A wall surface, X vertical axis, M virtual axis, m1 one end, m2 other end,
N virtual line, P closed position, Q open position

Claims (9)

A hollow cylindrical shape centered on a vertical axis extending in the front-rear direction perpendicular to the wall surface, both ends open and fitted into hollow through-holes in the wall surface;
A camshaft extending along the vertical axis and rotatably fixed to the frame;
A register body having two blades sandwiched between the camshafts and rotatably supported by the frame and capable of blocking a hollow of the frame;
A face portion detachably covering the front opening on the front side of the frame;
A louver part having an adjustment shaft rotatably supported on the vertical axis of the face part and extending rearward along the vertical axis,
The adjusting shaft has a rear end portion detachably connected to a front end portion of the camshaft to transmit rotational power,
The cam shaft has two spiral grooves provided in a spiral shape on a cylindrical surface centering on the vertical axis,
The vane has a guide protrusion that fits into the spiral groove and is movable back and forth along the spiral groove by rotation of the cam shaft, and is closed to block the hollow of the frame by the movement of the guide protrusion. A ventilation register characterized in that it rotates between a position and an open position for opening the hollow. The vane has a virtual axis extending from one end to the other end parallel to the wall surface,
The two blades have the same shape as each other, sandwich the cam shaft between two virtual axes extending in parallel to each other, and rotate about the virtual axis while being rotated 180 degrees around the vertical axis. It is pivotally attached to the frame,
The ventilation register according to claim 1, wherein the guide protrusion protrudes from the virtual axis on the one end side with respect to the vertical axis. The blades are semicircular main blades capable of blocking the hollow from the virtual axis to the inner peripheral surface of the frame;
A sub-blade having a semicircular cutout that cuts off the hollow between the two virtual shafts and passes the camshaft;
The main blade and the sub blade are connected on the virtual axis,
The auxiliary blade has an inner edge that is parallel to the virtual axis and offset toward the vertical axis;
The inner edge has a marginal step for the two auxiliary blades to overlap each other when the blades are in the closed position;
The main blades block the hollow from the virtual axis to the inner peripheral surface of the frame when the blades are in the closed position, and the vertical shafts when the blades are in the open position. The ventilation register according to claim 2, wherein the ventilation register is located at a position close to the ventilation register.   The ventilation register according to claim 3, wherein the edge step is staggered between the one end side and the other end side of the virtual axis from the vertical axis. The front end portion of the cam shaft and the rear end portion of the adjustment shaft constitute a detachable shaft joint,
The face portion covers the front opening on the front side of the frame through a filter,
The ventilation register according to claim 1, wherein the adjustment shaft passes through a central hole of the filter and is connected to the cam shaft. The auxiliary blade, when the blade is in the closed position, an axial auxiliary blade extending in parallel to the vertical axis from the virtual axis;
An edge side sub-blade extending from the end of the shaft side sub-blade on the side opposite to the imaginary axis toward the vertical axis in parallel to the wall surface;
The ventilation register according to claim 3 or 4, wherein the inner edge is an end portion of the edge side auxiliary blade.   2. The spiral groove according to claim 1, wherein the spiral groove has a locking recess at an end of the spiral groove in which the guide projection is detachably fitted and locked when the blade is in a closed position or an open position. Ventilation register as described in.   The ventilation resistor according to claim 1, wherein the guide protrusion is made of a flexible or elastic synthetic resin. The frame includes a step in the frame formed on the inner peripheral surface with a front inner diameter smaller than the rear inner diameter.
4. The ventilation register according to claim 3, wherein an outer edge of the main blade comes into contact with a step in the frame when the blade is in the closed position.

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