JP5714171B2 - Ventilation equipment - Google Patents

Description

  The present invention relates to a ventilator used when ventilating between outdoors and indoors.

  Generally, this type of ventilation device has a device main body and an opening / closing member as described in Patent Document 1 below. The main body of the apparatus is fixed to a wall or window of a building, and a ventilation passage that communicates between the outdoors and the interior is provided inside the apparatus body. On the other hand, the opening and closing member is for opening and closing the ventilation passage, and is provided movably inside the apparatus main body.

One side portion along the moving direction of the opening / closing member is supported by the apparatus main body so as to be linearly movable and rotatable. The opening / closing member can move linearly between the first position and the second position, and can rotate between the closed position and the open position.

First and second cam mechanisms are provided between the apparatus main body and the other side of the opening / closing member. The first cam mechanism rotates the opening / closing member from the open position side to the closed position side when the apparatus main body linearly moves in a direction from the second position toward the first position (hereinafter referred to as the first direction). When the opening / closing member reaches the first position, the opening / closing member is rotated to the closed position. When the opening / closing member rotates to the closed position, the opening / closing member abuts against the apparatus main body via the seal member and closes the ventilation passage. Thereby, ventilation between the outdoor and indoor is stopped.

The second cam mechanism rotates the opening / closing member from the closed position toward the open position when the apparatus main body linearly moves in a direction from the first position toward the second position (hereinafter referred to as the second direction). When the opening / closing member reaches the second position, the opening / closing member is rotated to the open position. The opening / closing member opens the ventilation passage when rotated to the open position. Thereby, ventilation is performed between the outdoor and the indoor.

The first cam mechanism has an inclined surface that is inclined with respect to the linear movement direction of the opening and closing member, and a pressing surface that is parallel to the linear movement direction of the opening and closing member. The inclined surface contacts the opening / closing member and rotates the opening / closing member from the open position to the closed position when the opening / closing member linearly moves in the first direction. When the opening / closing member further moves in the first direction to reach the first position, the opening / closing member presses and contacts the pressing surface over the inclined surface. In this state, since the pressing surface is parallel to the linear movement direction of the opening / closing member, the opening / closing member does not rotate, and the stopped state is maintained. That is, the opening / closing member is maintained in the closed position.

JP 2001-234673 A

  There are inevitable manufacturing errors in the apparatus body and the opening / closing member. The manufacturing error affects the position accuracy of the contact surface of the apparatus main body against which the pressing surface and the opening / closing member rotated to the closed position abut. As a result, when the opening / closing member is rotated to the closed position, the opening / closing member is pressed into contact with the apparatus body with an excessive force, or conversely, is pressed with an excessive force. If the contact pressure of the opening / closing member to the apparatus main body is excessive, there is a problem that it becomes difficult to linearly move the opening / closing member, or the sealing member is excessively compressed and deteriorates at an early stage. On the contrary, if the contact pressure of the opening / closing member to the apparatus main body is too small, there is a problem that the sealing performance of the opening / closing member with respect to the ventilation passage is lowered.

The present invention includes a device main body in which a ventilation passage that communicates between the outside and the room is formed, and an opening and closing member that is movably provided in the device main body, and between the device main body and the opening and closing member, When the opening / closing member moves in the first direction, the first cam mechanism for moving the opening / closing member from the open position where the ventilation passage is opened to the closed position where the ventilation passage is closed, and the opening / closing member are the first A second cam mechanism is provided for moving the opening / closing member from the closed position to the open position when moving in a second direction opposite to the direction, and the apparatus main body is abutted against the opening / closing member. In the ventilator provided with the first reference portion that defines the closed position of the opening and closing member,
First biasing means is provided in the apparatus main body, and the first biasing means biases the opening / closing member moved to the closed position from the open position side to the closed position side, thereby the first biasing means. The most important feature is that it is pressed against the reference portion, thereby maintaining the open / close member in the closed position.
In this case, the first cam mechanism includes a first cam portion provided on one of the apparatus main body and the opening / closing member, and a first contact portion provided on the other, and the opening / closing member. Is moved in the first direction, the first contact portion slides on the first cam portion, whereby the opening / closing member is moved from the open position to the closed position, and the second cam When the mechanism has a second cam portion provided on the one side and a second contact portion provided on the other side, and the opening / closing member moves in the other direction, the second contact portion is By sliding on the second cam portion, the opening / closing member is moved from the closed position to the open position, and the front end portion of the first cam portion positioned forward in the first direction is elastically deformed. A possible first elastic part is provided, and the first elastic part connects the first contact part with the first elastic part. It is desirable that the position side to urge into the closed position side are from the first biasing means for pressing said closing member to a first reference portion above.
The first cam portion includes a first support portion provided on the one side and a metal first plate, and the first support portion is inclined with respect to the first and second directions. The first contact member has an inclined surface and is provided on the one side in a state where the first plate is in contact with the first inclined surface. By sliding contact with the surface via the first plate member, the opening / closing member is moved from the open position side to the closed position side, and the front end portion of the first plate member positioned forward in the first direction is the first plate member. It is desirable that the first end portion of the first plate member be the first elastic portion that is spaced from the open position toward the closed position with respect to one inclined surface.
The second cam portion includes a second support portion provided on the one side and a metal second plate member, and the second support portion is inclined with respect to the first and second directions. An inclined surface is provided, and the second plate member is provided on the one side in contact with the second inclined surface, and the second abutting portion is provided on the second inclined surface when the opening / closing member moves in the other direction. It is desirable that the opening / closing member is moved from the closed position side to the open position side by slidingly contacting the surface via the second plate member.
The first cam portion has a second reference portion provided subsequent to a rear end portion of the first inclined surface located at the rear in the first direction, and the first plate member located at the rear in the first direction. An extension portion that is brought into contact with the second reference portion is provided at a rear end portion, and the first contact portion abuts against the second reference portion via the extension portion, thereby opening the opening / closing member. A second elastic portion that is elastically deformable is provided at a front end portion of the second plate member that is defined and positioned forward in the second direction, and the second elastic portion moves the second contact portion from the closed position side to the second contact portion. It is desirable that the opening / closing member be maintained in the open position by urging the open position side and pressing the second reference portion through the extension portion.
It is desirable that a cam block made of hard resin is fixed to the apparatus main body, and the first and second cam mechanisms are provided between the cam block and the opening / closing member.
When the first cam mechanism has a first cam portion provided on the cam block and a first contact portion provided on the opening / closing member, and the opening / closing member moves in the first direction, When the first contact portion slides on the first cam portion, the opening / closing member is moved from the open position to the closed position, and the second cam mechanism is provided in the cam block. A second abutting portion provided on the opening / closing member; and when the opening / closing member moves in the second direction, the second abutting portion moves on the second cam portion. By sliding, the opening / closing member is moved from the closed position to the open position, and a first elastic portion that is elastically deformable is provided at a front end portion of the first cam portion positioned forward in the first direction. The first elastic portion is disposed above the first contact portion from the open position side. It is desirable to be biased to the closed position side are from the first biasing means for pressing said closing member to a first reference portion above.
The first cam portion includes a first support portion provided on the cam block and a metal first plate, and the first support portion is inclined with respect to the first and second directions. The first block member is provided on the cam block in a state in which the first plate member is in contact with the first inclined surface, and the first contact portion is moved when the opening / closing member moves in the first direction. By slidingly contacting the first inclined surface via the first plate member, the opening / closing member is moved from the open position side to the closed position side, and the front end portion of the first plate member is located forward in the first direction. It is desirable that the first inclined surface is spaced forward in the direction from the open position to the closed position, and the front end portion is the first elastic portion.
The second cam portion includes a second support portion provided on the cam block and a metal second plate, and the second support portion is inclined with respect to the first and second directions. The second block member is provided on the cam block in a state in which the second plate member is in contact with the second inclined surface, and the second contact portion is moved when the opening / closing member moves in the second direction. It is desirable that the opening / closing member is moved from the closed position side to the open position side by slidingly contacting the second inclined surface via the second plate member.
The first cam portion has a second reference portion provided subsequent to a rear end portion of the first inclined surface located at the rear in the first direction, and the first plate member located at the rear in the first direction. An extension portion that is brought into contact with the second reference portion is provided at a rear end portion, and the first contact portion abuts against the second reference portion via the extension portion, thereby opening the opening / closing member. A second elastic portion that is elastically deformable is provided at a front end portion of the second plate member that is defined and positioned forward in the second direction, and the second elastic portion moves the second contact portion from the closed position side to the second contact portion. It is desirable that the opening / closing member be maintained in the open position by urging the open position side and pressing the second reference portion through the extension portion.
It is desirable that the first and second plate materials are formed in the same shape.

  According to the ventilation device of the present invention, since the opening / closing member is pressed against the first reference portion by the first biasing means, even if there is a manufacturing error in the device main body or the opening / closing member, the manufacturing error is reduced to the first. The biasing means absorbs. Therefore, the opening / closing member can be pressed against the first reference portion with an appropriate force without excess or deficiency.

FIG. 1 is a view of a part of a building in which a ventilator according to the present invention is used as viewed from the indoor side. FIG. 2 is an enlarged cross-sectional view taken along the line AA in FIG. FIG. 3 is an enlarged cross-sectional view taken along line BB in FIG. FIG. 4 is a plan view showing an embodiment of the ventilation device according to the present invention. FIG. 5 is a perspective view showing the same embodiment with the lid removed from the apparatus main body. FIG. 6 is an exploded perspective view showing the apparatus main body, the opening / closing member, and the cam block according to the embodiment. 7 is a cross-sectional view taken along the line XX in FIG. 4. FIG. 7A is a cross-sectional view showing the state in which the opening / closing member is moved to the closed position, and FIG. It is sectional drawing shown in the state which moved to the open position. FIG. 8 is a cross-sectional view taken along line XX in FIG. FIG. 9 is a cross-sectional view taken along line YY in FIG. FIG. 10 is a front view showing a lever support member used in the embodiment. FIG. 11 is a front view showing a lever used in the embodiment. FIG. 12 is a front view showing a link bar used in the embodiment. FIG. 13 is a front view showing a connecting member used in the embodiment. FIG. 14 is an enlarged view of a main part of FIG. FIG. 15 is an enlarged view of a main part of FIG. FIG. 16 is an enlarged front view showing the cam block, the first plate member, and the second plate member used in the embodiment. FIG. 17 is a view showing a cam block used in the embodiment, in which FIG. 17 (A) is a front view thereof, FIG. 17 (B) is a rear view thereof, and FIG. 17 (C) is a lower surface thereof. FIG. 17D is a side view thereof, and FIG. 17E is a cross-sectional view taken along line XX of FIG. 18A and 18B are views showing a first plate member used in the embodiment, in which FIG. 18A is a front view thereof, and FIG. 18B is a side view thereof.

Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS.
FIG. 1 is a front view of a building in which a ventilator according to the present invention is used as viewed from the room I to the room O. In this building, a rising A that rises from the floor surface FL with a predetermined height (for example, a height of about 30 to 50 cm) is provided. An upper bar B is provided above the rising A. Between the rising A and the upper rail B, there are provided a large number of vertical C that are separated from each other in the left-right direction. The window glass D is supported by the rising A, the upper rail B, and the two uprights C and C that can be adjacent to the left and right.

  As shown in FIG. 3, a ventilation duct E is provided at the rising A. One end of the ventilation duct E opens to the outer surface facing the outdoor O of the rising A. The other end of the ventilation duct E opens to the upper surface facing the room I at the rising edge A. At the end of the ventilation duct E on the outdoor O side, a net F for preventing relatively large dust and small animals from entering the ventilation duct E is detachably provided. As shown in FIGS. 2 and 3, a ventilation device 1 according to the present invention is detachably provided at the end of the ventilation duct E on the room I side so as to be attached to and detached from the room I.

  The ventilation device 1 is configured as described below. In addition, about the structure of the ventilation apparatus 1, it demonstrates on the basis of the indoor / outdoor direction of a building, the left-right direction, and an up-down direction for convenience of explanation. Of course, the ventilation apparatus 1 is not limited to those directions.

  As shown in FIGS. 5 and 6, the ventilation device 1 has a device body 2. The apparatus main body 2 includes a main body member 2a and a pair of end members 2b and 2b. The main body member 2a is made of an extruded material of aluminum and has a cross-sectional “U” shape. The end member 2b is made of an extruded material of aluminum and has a cross-sectional “L” shape. The end members 2b are fixed to both end portions of the apparatus main body 2, respectively. As a result, the opening portions at both ends of the main body member 2a are closed by the end members 2b and 2b, and the entire apparatus main body 2 is formed in a box shape with the top opened.

  As shown in FIGS. 5, 8, and 9, a decorative lid 3 is fixed to the upper end portion of the apparatus main body 2. The decorative lid 3 has a length in the left-right direction and a width in the indoor / outdoor direction that are larger than those of the apparatus main body 2, and is arranged so as to cover the entire upper open end of the apparatus main body 2. Engaging portions 3 a are provided on the side surfaces of the decorative lid 3 facing the indoor I and outdoor O sides. On the other hand, a lock member 4 is provided on each side surface of the apparatus main body 2 facing the indoor I side and the outdoor O side. When the lock member 4 is detachably engaged with the engaging portion 3 a, the decorative lid 3 is detachably attached in a state of being pressed against the upper surface of the apparatus main body 2. Note that the decorative lid 3 is in contact with the upper surface of the apparatus main body 2 via a seal member S1, whereby the apparatus main body 2 and the decorative cover 3 are hermetically sealed.

As shown in FIGS. 8 and 9, the apparatus main body 2 is disposed at the end of the ventilation duct E on the room I side. On the inner wall surface facing the ventilation duct E, a locking portion A1 is formed. When the locking member 4 is detachably engaged with the engaging portion A1, the apparatus main body 2 is detachably attached so that it can be attached and removed from the room I in the ventilation duct E of the rising A. . In the state where the apparatus main body 2 is attached to the rising A, the upper surface of the decorative lid 3 is positioned on the same plane as the upper surface of the rising A. The apparatus main body 2 may be detachably attached to the rising A by inserting a screw (not shown) into the hole 2c formed in the end member 2b, screwing the screw into the rising A, and tightening.

As shown in FIG. 3, a partition wall A <b> 2 that divides the ventilation duct E into a part on the outdoor O side and a part on the indoor I side is formed at the rising A. A through hole A3 is formed in the partition wall A2. The part on the outdoor O side and the part on the indoor I side from the partition wall A2 of the ventilation duct E are communicated with each other through a through hole A3.

The lower surface of the bottom wall 2d of the apparatus main body 2 is pressed against the upper surface A4 of the partition wall A2 via the seal member S. Thereby, the through hole A3 is closed. However, a communication hole 2e is formed in the bottom wall portion 2d facing the through hole A3. Through the communication hole 2e, the through hole A3 communicates with the inside of the apparatus main body 2. As a result, a portion of the ventilation duct E on the outdoor O side communicates with the inside of the apparatus main body 2. The interior of the apparatus main body 2 communicates with the room I through a ventilation hole 3b (see FIGS. 4 and 5) formed in the decorative lid 3. Therefore, the outdoor O and the indoor I are communicated with each other through the portion on the outdoor O side from the partition wall A2 of the ventilation duct E, the through hole A3, the communication hole 2e, the internal space of the apparatus body 2, and the ventilation hole 3b. . Therefore, the portion on the room I side of the ventilation duct E is substantially constituted by the communication hole 2e, the internal space of the apparatus main body 2, and the ventilation hole 3b. Further, a ventilation passage 5 is formed inside the apparatus main body 2 by the communication hole 2e, the internal space of the apparatus main body 2, and the ventilation hole 3b.

  As described above, the communication hole 2 e is a part of the ventilation passage 5 and a part of the ventilation duct E. Therefore, by opening and closing the communication hole 2e, the ventilation passage 5 and the ventilation duct E are opened and closed, and the outdoor O and the room I are switched between the communication state and the shut-off state. Ventilation can be switched between a stopped state and a ventilated state. The communication hole 2 e is opened / closed by the opening / closing member 6.

  As shown in FIGS. 5, 6, 8, and 9, the opening / closing member 6 has a hollow plate shape and is accommodated inside the apparatus main body 2. The opening / closing member 6 is horizontally arranged with its longitudinal direction directed to the longitudinal direction of the apparatus body 2. Moreover, the opening / closing member 6 is arranged so as to be movable in the longitudinal direction of the apparatus main body 2, that is, in the left-right direction and in the up-down direction. The opening / closing member 6 can move between a first position shown in FIG. 7 (A) and a second position shown in FIG. 7 (B) in the left-right direction, and FIG. 7 (A) and FIG. 8 is movable between a lower position (closed position) shown in FIG. 8 and an upper position (open position) shown in FIGS. As will be described later, when the opening / closing member 6 moves from the second position to the first position in the left direction (first direction) in FIGS. 7A and 7B, the first cam mechanism 8 moves the opening / closing member 6 from the upper position. It can be moved to the lower position. On the contrary, when moving from the first position to the second position in the right direction (second direction) in FIGS. 7A and 7B, the second cam mechanism 9 moves the position from the lower position to the upper position.

  A seal member 61 made of an elastic material such as relatively hard rubber is provided on the lower surface of the opening / closing member 6. The seal member 61 is pressed against the upper surface (first reference portion) 2f of the bottom wall portion 2d of the apparatus main body 2 when the opening / closing member 6 is positioned at the lower position. Moreover, the seal member 61 is disposed so as to surround the communication hole 2e when the opening / closing member 6 is located at the lower position. Therefore, when the opening / closing member 6 is located at the lower position, the communication hole 2e is closed by the opening / closing member 6, and consequently the ventilation passage 5 is closed. As a result, the space between the outdoor O and the room I is blocked by the ventilator 1, and the ventilation between the outdoor O and the room I is stopped. Conversely, when the opening / closing member 6 is positioned at the upper position, the opening / closing member 6 and the seal member 61 are separated upward from the upper surface 2f of the bottom wall portion 2d. Thereby, the communication hole 2e is opened and the ventilation passage 5 is opened. As a result, the outdoor O and the room I communicate with each other via the ventilation duct E and the ventilation passage 5, and ventilation is performed between the outdoor O and the room I.

  The opening / closing member 6 is moved in the left-right direction by the moving mechanism 7. The moving mechanism 7 includes a lever box 71, a lever 72, a link bar 73, and a connecting member 74, as shown in FIGS.

The lever box 71 is composed of a pair of box halves 71A and 71B. The pair of box halves 71 </ b> A and 71 </ b> B are provided at the left end inside the apparatus main body 2. One box half 71A is disposed on the outdoor O side, and the other box half 71B is disposed on the indoor I side. Both boxes 71A and 71B are in contact with each other at the center of the apparatus main body 2 in the indoor / outdoor direction. The boxes 71A and 71B are formed symmetrically with respect to a line that bisects the apparatus main body 2 into the outdoor O side and the indoor I side. Accordingly, only the configuration of one box half 71A will be described for the configuration of the box halves 71A and 71B, and the other box half 71B is the same as the components of the box half 71A. Reference numerals are assigned and explanations thereof are omitted.

As shown in FIG. 10, a first guide groove 71a extending in an arc shape is formed on the surface of the box half 71A facing the other box half 71B. The first guide groove 71a extends along an arc. As shown in FIG. 7, a lever 72 is provided between the pair of box halves 71A and 71B. As shown in FIG. 11, guide portions 72 a and 72 a extending in an arc shape are formed on the side surfaces of the lever 72 facing the outdoor O side and the indoor I side, respectively. One guide portion 72a is fitted to the first guide groove 71a of the box half 71A so as to be movable in the longitudinal direction, and the other guide portion 72a is moved to the first guide groove 71a of the box half 71B in the longitudinal direction. It can be fitted. Thereby, the lever 72 is provided in the lever box 71 so as to be rotatable in the vertical direction.

The lever 72 is rotatable between an off position shown in FIG. 7A and an on position shown in FIG. The off position of the lever 72 is determined by the lever 72 abutting against the upper end surface of the positioning protrusion 71b formed on the box body 71A. A structure for determining the ON position of the lever 72 will be described later.

  A second guide groove 71c is formed on the surface of the box half 71A facing the box half 71B. The second guide groove 71c extends horizontally in the left-right direction. As shown in FIG. 7, link bars 73 and 73 are provided on the box halves 71A and 71B, respectively. Each link bar 73, 73 is disposed along the opposing surface of the box halves 71A, 71B, respectively. On one surface of the link bar 73 facing the box half 71A, a protrusion 73a is formed. The protrusion 73a is inserted into the second guide groove 71c so as to be movable in the left-right direction and not movable in the vertical direction. Thus, one link bar 73 is provided on the box half 71A so as to be movable in the left-right direction and not movable in the vertical direction. Similarly, the other link bar 73 is provided on the box half 71B so as to be movable in the left-right direction and not movable in the vertical direction.

  A first long hole 73b is formed in a substantially central portion of the link bar 73 in the longitudinal direction. The first long hole 73b is arranged with its longitudinal direction facing the up-down direction. A lower end portion of the lever 72 is inserted between the link bars 73 and 73. Protruding portions 72b and 72b are formed on both side surfaces of the lower end of the lever 72 facing the link bars 73 and 73, respectively. The protrusions 72b and 72b are inserted into the first long holes 73b and 73b of the link bars 73 and 73, respectively. Moreover, the protrusion 72b is inserted into the first long hole 73b so as to be movable in the vertical direction and immovable in the horizontal direction. Therefore, when the link bar 73 rotates in the vertical direction, the link bar 73 moves in the horizontal direction accordingly.

  A partition wall 71d that protrudes toward the box body 71B is formed on the surface of the box half 71A that faces the box half 71B. The partition wall 71d extends horizontally from the lower end of the positioning protrusion 71b to the left and extends to the left end wall of the box body 71A. As a result, a recess 71 </ b> C is formed on the left side of the positioning protrusion 71 b on the upper surface of the lever box 7. The left end portion of the lever 72 when in the off position enters the upper portion of the right end portion of the recess 71C. Therefore, a finger can be inserted from the left end of the recess 71C and the left end of the lever 72 can be pushed upward, whereby the lever 72 can be rotated from the off position to the on position. Of course, the lever 72 can be rotated from the on position to the off position by pushing down the left end of the lever 72.

The left end portion of the link bar 73 enters the lower side of the partition wall portion 71d so as to be movable in the left-right direction. A spring receiver 75 is provided at the left end of the link bar 73. The spring receiver 75 is provided with an engagement spring 76 having a mountain shape. As shown in FIG. 7A, when the lever 72 is in the off position, the engagement spring 76 has a peak portion 76a of the engagement spring 76 at the lower end (right end surface) of the right end surface of the positioning protrusion 71b. The link bar 73 is urged to the right via the spring receiver 75. As a result, the lower end portion of the lever 72 is pushed rightward by the link bar 73, and as a result, the lever 72 is urged to rotate in the direction from the on position side to the off position side (counterclockwise in FIG. 7). The link bar 73 is pressed against the upper surface of the positioning protrusion 71b by the rotation urging force and is maintained at the off position.

When the lever 72 rotates from the off position to the on position side, the link bar 73 moves to the left. Then, the peak portion 76a is pushed downward by the positioning protrusion 71b. As a result, the engagement spring 76 is elastically deformed so that the height of the peak portion 76a is lowered. When the lever 72 further rotates to the ON position side, the peak portion 76a passes through the right end surface of the positioning protrusion 71b and is pressed against the lower surface of the positioning protrusion 71b. Then, it passes through the lower surface of the positioning protrusion 71b in a sliding state, and thereafter slides on the horizontal lower surface of the partition wall 71d continuous with the lower surface. As shown in FIGS. 7A and 7B, an engagement recess 71e is formed on the lower surface of the partition wall 71d. The engagement recess 71e is arranged such that the peak portion 76a of the engagement spring 76 is engaged by the elasticity of the engagement spring 76 itself when the lever 72 rotates from the off position side to the on position side and reaches the on position. ing. In other words, the off position of the lever 72 is determined by the peak portion 76a engaging with the engaging recess 71e.

The lever 72 can be further rotated beyond the ON position by the elastic deformation of the engagement spring 76 so that the height of the peak portion 76a is lowered. However, as soon as the lever 72 exceeds the ON position, the projecting portion 72b hits the upper end of the inner surface of the first long hole 73b and the rotation of the lever 72 is prevented. Therefore, the lever 72 does not substantially rotate beyond the ON position.

A second long hole 73 c is formed at the right end of the link bar 73. The second long hole 73c is arranged with its longitudinal direction directed in the vertical direction. The right end portion of the connecting member 74 is fixed to the left end portion of the opening / closing member 6. The left end portion of the connecting member 74 is inserted between the right end portions of the link bars 73 and 73. Protrusions 74a and 74a are formed on both side surfaces of the connecting member 74 facing the link bars 73 and 73, respectively. The protrusions 74a and 74a are inserted into the second long holes 73c and 73c of the link bars 73 and 73, respectively. The protrusion 74a can move in the vertical direction with respect to the second elongated hole 73c, but cannot move in the horizontal direction. Therefore, when the link bar 73 moves in the left-right direction, the opening / closing member 6 moves together with the link bar 73. Therefore, when the lever 72 is rotated from the on position side to the off position side, the lever 72 moves in the right direction (first direction). The position of the opening / closing member 6 when the lever 72 reaches the OFF position is the first position. Conversely, when the lever 72 is rotated from the off position side to the on position side, the opening / closing member 6 moves in the left direction (second direction). The position of the opening / closing member 6 when the lever 72 reaches the on position is the second position.

  When the opening / closing member 6 moves from the first position to the second position in the right direction, the first cam mechanism 8 causes the upper position (open position) shown in FIG. 7 (B) to the lower position shown in FIG. 7 (A). It is moved downward to the (closed position). Conversely, when the opening / closing member 6 moves from the second position to the first position in the left direction, the opening / closing member 6 is moved upward from the lower position to the upper position by the second cam mechanism 9. The first and second cam mechanisms 8 and 9 are both provided between the apparatus main body 1 and the opening / closing member 6 as described below.

  As shown in FIGS. 5 and 6, two pairs of two cam blocks 10 and 10 ′ are provided inside the apparatus main body 1. The pair of cam blocks 10 and 10 'are arranged at the same position in the left-right direction, but are arranged apart from each other on the outdoor O side and the indoor I side in the indoor and outdoor directions. The pair of cam blocks 10 and 10 'and the other pair of cam blocks 10 and 10' are spaced apart from each other in the left-right direction. Only one pair of cam blocks 10 and 10 'may be provided, or three or more pairs may be provided.

The cam blocks 10 and 10 'are formed so as to be mirror-symmetric with respect to the apparatus main body 1. Therefore, only the configuration of the cam block 10 will be described, and the configuration of the cam block 10 'will be denoted by the same reference numerals as those of the cam block 10 and description thereof will be omitted.

As shown in FIGS. 14 to 17, on the surface facing the cam block 10 ′ disposed on the room I side of the cam block 10 disposed on the outdoor O side (the surface facing the room I side of the cam block 10), A protruding portion 11 that protrudes toward the other cam block 10 'is formed.

A first inclined surface 12 is formed at the left end of the protrusion 11. The first inclined surface 12 faces diagonally to the left and is inclined downward to the right so as to go downward as it goes to the right.

A first horizontal surface 13 extending horizontally is formed at the left end of the protrusion 11 following the upper end of the first inclined surface 12, and further extends obliquely upward to the left with a small inclination angle from the left end of the first horizontal surface 13. One spring receiving surface (second reference portion) 14 is formed. The inclination angle of the first spring receiving surface 14 is set to be smaller than the inclination angle of the first inclined surface 12. Normally, the inclination angle of the first inclined surface 12 is about 30 °, whereas the inclination angle of the first spring receiving surface 14 is set to about 5 °. The first horizontal surface 13 is connected to the first inclined surface 12, but may be formed away from the first inclined surface 12 to the left as long as the amount is small. Similarly, the first spring receiving surface 14 may be separated from the first horizontal surface 13 to the left.

A first flank 15 is formed at the left end of the protrusion 11. The first flank 15 is connected to the lower end portion of the first inclined surface 12 via a step portion 16 and an arc portion 17 and extends from the first inclined surface 12 to the right. The first flank 15 may be formed so as to smoothly continue to the first inclined surface 12 via the arc portion 17 without forming the step portion 16.

First and second slits 18 and 19 are formed at the left end of the protrusion 11. The first slit 18 is disposed along the center of the first inclined surface 12, and a part of the first slit 18 enters the first inclined surface 12. Thereby, the 1st inclined surface 12 is divided into the upper left part and the lower right part. The first slit 18 may be disposed so as to contact the first inclined surface 12. In that case, the entire first inclined surface 12 is a continuous surface. A locking projection 18a that protrudes toward the first inclined surface 12 is formed on the side surface of the first slit 18 that faces the first inclined surface 12, that is, the side surface that is spaced diagonally to the lower left from the first inclined surface 12. Has been. The protruding height of the locking projection 18a is set to approximately half the width of the first slit 18. The second slit 19 extends along the upper end portion of the first inclined surface 12, the first horizontal surface 13, and the first spring receiving surface 14.

A second inclined surface 22 is formed at the right end of the protrusion 11. The second inclined surface 22 faces obliquely upward to the right, and is inclined upward to the left so as to go upward as it goes to the left. The inclination angle of the second inclined surface 22, that is, the inclination angle of the second inclined surface 22 with respect to the horizontal line is set to the same angle as the inclination angle of the first inclined surface 12. Therefore, the second inclined surface 22 is parallel to the first inclined surface 12.

A second horizontal plane 23 extending horizontally from the lower end of the second inclined surface 22 to the right is formed at the right end of the protrusion 11, and further obliquely downward to the right with a small inclination angle from the right end of the second horizontal plane 23. A second spring receiving surface 24 extending in the direction is formed. The inclination angle of the second spring receiving surface 24 is set to be the same as the inclination angle of the first spring receiving surface 14. The second horizontal surface 23 is connected to the second inclined surface 22, but may be separated from the second inclined surface 22 to the right as long as the amount is small. Similarly, the second spring receiving surface 24 may be separated from the second horizontal surface 23 to the right.

A second flank 25 is formed at the right end of the protrusion 11. The second flank 25 is connected to the upper end of the second inclined surface 22 via a stepped portion 26 and an arc portion 27 and extends from the second inclined surface 22 to the left. The second flank 25 may be formed so as to smoothly continue to the second inclined surface 22 via the arc portion 27 without forming the step portion 26.

Third and fourth slits 28 and 29 are formed at the right end of the protrusion 11. The third slit 28 is disposed along the center portion of the second inclined surface 22, and a part of the third slit 28 enters the second inclined surface 22. Thereby, the 1st inclined surface 22 is divided into the upper left part and the lower right part. The third slit 28 may be disposed in contact with the first inclined surface 22. In that case, the entire first inclined surface 22 is a continuous surface. A locking projection 28a that protrudes toward the second inclined surface 22 is formed on the side surface of the third slit 28 facing the second inclined surface 22 side, that is, the side surface spaced from the second inclined surface 22 to the lower left side. Has been. The protruding height of the locking projection 28 a is set to approximately half the width of the third slit 28. The fourth slit 29 extends along the upper end portion of the second inclined surface 22, the second horizontal surface 23, and the second spring receiving surface 24.

In addition, the 1st inclined surface 12, the 1st horizontal surface 13, the 1st spring receiving surface 14, and the 1st flank 15 and the 2nd inclined surface 22, the 2nd horizontal surface 13, the 2nd spring receiving surface 24, and the 2nd flank 25 Is arranged point-symmetrically except for the following differences. The difference is that when the second horizontal surface 23 and the second spring receiving surface 24 are rotated 180 °, the second horizontal surface 23 and the second spring receiving surface 24 are slightly lower than the first horizontal surface 13 and the first spring receiving surface 14. It is arrange | positioned so that it may be located in the side, and the length of the 1st inclined surface 13 is longer than the length of the 2nd inclined surface 22 correspondingly.

The cam block 10 is provided with first and second metal plates 31 and 41 made of metal. As shown in FIGS. 18A and 18B, the first plate member 31 includes a first plate portion 31a formed on a flat plate, and a second plate portion connected to one end portion of the first plate portion 31a ( (Extension part) 31b and the 3rd board part (elastic part) 31c connected with the other end part of the 1st board part 31a. An arc portion 31d that smoothly connects them is formed between the first plate portion 31a and the second plate portion 31b, and they are smoothly interposed between the first plate portion 31a and the third plate portion 31c. The circular arc part 31e connected to is formed.

The second plate portion 31b and the third plate portion 31c are inclined with respect to the first plate portion 31a. The second plate portion 31b and the third plate portion 31c are inclined with respect to the first plate portion 31a so as to protrude in opposite directions in the thickness direction. Moreover, the inclination angle of the second plate portion 31b with respect to the first plate portion 31a and the inclination angle of the third plate portion 31c with respect to the first plate portion 31a are set to the same angle. Accordingly, the second and third plate portions 31b and 31c are parallel to each other. However, it is not always necessary to do so, and the former may be smaller than the latter. For example, the former may be set to an angle equal to or slightly larger than the inclination angle of the first spring receiving surface 14. The latter is set to a size that is approximately half the inclination angle of the first inclined surface 12.

A first engagement protrusion 31f is formed on one side surface of the first plate portion 31a. An engagement hole 31g penetrating the central portion is formed in the central portion of the first engagement protrusion 31f. A second engagement protrusion 31h is formed on one side surface of the portion from the one end of the first plate 31a to the tip of the second plate 31b. The first engagement protrusion 31 f is inserted into the first slit 18, and the second engagement protrusion 31 h is inserted into the second slit 19. Moreover, the locking protrusion 18a is fitted into the engagement hole 31g of the second engagement protrusion 31h. Thus, the 1st board | plate material 31 is attached to the cam block 10 in the fixed state. Moreover, the first plate member 31 has the first plate portion 31 a pressed against the first inclined surface 12 and the second plate portion 31 b pressed against the first spring receiving surface 14 due to its own elasticity. On the other hand, the lower end portion of the first plate portion 31a, and the subsequent arc portion 31e and the third plate portion 31c are spaced apart from the first flank 15 downward. Accordingly, the arc portion 31e and the third plate portion 31c can be elastically deformed so that the tip end portion (right end portion) moves in the vertical direction.

The second plate 41 has the same shape as the first plate 31. Therefore, the second plate member 41 includes the first plate portion 41a and the second plate portion corresponding to the first plate portion 31a, the second plate portion 31b, the third plate portion 31c, and the arc portions 31d and 31e of the first plate member 31, respectively. 41b, a third plate portion 41c, and arc portions 41d and 41e. In addition, the second plate 41 has a second inclined surface corresponding to the first plate 31 being disposed along the first inclined surface 12, the first horizontal surface, the first spring receiving surface and the first flank 15. It is disposed along the surface 22, the second horizontal surface 23, the second spring receiving surface 24 and the second flank 25. Here, the second horizontal surface 23 and the second spring receiving surface 24 are disposed below the first horizontal surface 13 and the first spring receiving surface 14 rotated by 180 ° by a predetermined distance. Correspondingly, the second plate member 41 is disposed so as to be positioned a predetermined distance below the first plate member 31 rotated by 180 °. The second plate member 41 includes a first engagement protrusion 41f, an engagement hole 41g, and a first engagement protrusion 31f, an engagement hole 31g, and a second engagement protrusion 31h of the first plate 31. A second engaging protrusion 41h is formed. Then, the first and second engaging protrusions 41f and 41h are inserted into the third and fourth slits 28 and 29, respectively, and the locking protrusions 28a are fitted into the engaging holes 41g.

As shown in FIGS. 6, 8, and 9, two pairs of first and second contact portions 51 and 52 are provided on the side surface of the opening / closing member 6 facing the outdoor O side. The first and second contact portions 51 and 52 forming a pair are disposed at the same position in the vertical direction and separated by a predetermined distance in the horizontal direction. The pair of first and second contact portions 51 and 52 and the other pair of first and second contact portions 51 and 52 are disposed apart from each other by a predetermined distance in the left-right direction. The first and second contact portions 51 and 52 forming a pair constitute the first and second cam mechanisms 8 and 9 and the first and second inclined surfaces 12 and 22 of the cam block 10.

A pair of first and second contact portions 51 ′ and 52 ′ forming a pair is provided on the side surface of the opening / closing member 6 facing the room I side. The two pairs of first and second contact portions 51 'and 52' constitute the first and second cam mechanisms 8 and 9 and the first and second inclined surfaces 12 and 22 of the cam block 10 '. Except for the point, it has the same configuration as the first and second contact portions 51 and 52. Therefore, in the following, only the first and second contact portions 51 and 52 will be described, and description of the first and second contact portions 51 ′ and 52 ′ will be omitted.

As shown in FIGS. 14-16, the 1st and 2nd contact parts 51 and 52 are the distance between them, ie, the right end surface of the 1st contact part 51, and the left end surface of the 2nd contact part 52. The distance between the left side surface of the first plate portion 31a and the right side surface of the first plate portion 41a is substantially the same as or slightly longer than the distance in the left and right direction between the parts located at the same position in the vertical direction. Is set to Therefore, when the first contact portion 51 is in contact with the first plate portion 31a, the second contact portion 52 is almost in contact with the first plate portion 41a or slightly separated to the right. On the other hand, when the second contact portion 52 is in contact with the first plate portion 41a, the first contact portion 51 is almost in contact with the first plate portion 31a or slightly separated to the left. .

The first and second contact portions 51 and 52 are further arranged to satisfy the following condition. That is, when the opening / closing member 6 is located at the first position, the right end portion of the first contact portion 51 is the third plate portion 31c of the first plate member 31 as shown by a solid line in FIG. 16 (see FIG. 14). The third plate portion 31c and the arc portion 31e are elastically deformed so that the right end portion of the third plate portion 31c is displaced upward. As a result, the first contact portion 51 is urged downward by the third plate portion 31c. On the other hand, when the opening / closing member 6 is located at the first position, the second contact portion 52 faces the third plate portion 41c of the second plate member 41 in the vertical direction, but any of the third plate portions 41c. It is also separated from the location.

Thus, when the opening / closing member 6 is located at the first position, the first contact portion 51 is biased downward by the third plate portion 31c, while the second contact portion 52 is the third plate portion. Since it is separated from 41c, the opening / closing member 6 is urged downward by the elastic force of the third plate portion 31c and pressed against the upper surface 2f of the bottom wall portion 2d via the seal member 61. Therefore, the communication hole 2 e and thus the ventilation passage 5 are closed by the opening / closing member 6, and the ventilation duct E is closed by the ventilation device 1. As a result, the ventilation between the outdoor O and the indoor I is stopped. The position of the opening / closing member 6 when the opening / closing member 6 is pressed against the bottom wall portion 2d via the seal member 61 is the lower position (closed position), and the opening / closing member 6 is lowered by the urging force of the third plate portion 31c. Maintained in position.

The first and second contact portions 51 and 52 are further arranged to satisfy the following condition. That is, when the opening / closing member 6 is located at the second position, the left end portion of the second contact portion 52 is the third plate portion of the second plate member 41 as indicated by an imaginary line in FIG. 16 (see FIG. 15). The third plate portion 31c and the circular arc portion 41e are elastically deformed so that the right end portion of the third plate portion 41c is displaced downward while hitting the 41c. As a result, the second contact portion 52 is urged upward by the third plate portion 41c, and as a result, the opening / closing member 6 is urged upward. On the other hand, the first contact portion 51 is located below the second plate portion 31b of the first plate material 31, and the second contact portion 51 is urged by the urging force of the third plate portion 41c that urges the opening / closing member 6 upward. It is pressed against the plate portion 31b. In this case, the first contact portion 51 is pressed against a portion of the second plate portion 31b that is located directly below the intersection between the first horizontal surface 13 and the first spring receiving surface 14, It may be pressed against a portion of the plate portion 31 b that faces only the first spring receiver 14, or may be pressed against a portion that faces only the first horizontal surface 13.

Thus, when the opening / closing member 6 is located at the second position, the first contact portion 51 is pressed against the first spring receiving surface 14 via the second plate portion 31b, and the opening / closing member 6 is in the vertical direction. Fixed at a fixed position. The position of the opening / closing member 6 at this time is the upper position. The first contact portion 51 may be pressed against the first horizontal plane 13 via the second plate portion 31b when the opening / closing member 6 is located at the second position. When the opening / closing member 6 is located at the upper position, the seal member 61 is spaced upward from the bottom wall portion 2d, and the communication hole 2e is opened. Therefore, the outdoor O side portion and the indoor I side portion of the ventilation duct E communicate with each other via the ventilation passage 5 of the ventilation device 1, and ventilation is performed between the outdoor O and the indoor I.

As shown in FIGS. 2, 4, and 5, the decorative lid 3 is formed with an operation window hole 3 c. The operation window hole 3 c is disposed so as to face the upper end of the lever 72 and the recess 71 </ b> C of the lever box 71. Accordingly, when the lever 72 is in the off position, a finger can be inserted from the operation window hole 3c to lift the left end of the lever 72 upward, thereby rotating the lever 72 from the off position to the on position. Can be made. The lever 72 located at the on position can be rotated to the off position by pushing down the left end of the lever 72.

In the ventilator 1 having the above configuration, it is assumed that the lever 72 is now in the off position. At this time, the opening / closing member 6 is located at the first position in the left-right direction and is located at the lower position in the up-down direction, and the opening / closing member 6 is bottom walled by the elastic force of the third plate portion 31c of the first plate material 31. The seal member 61 is pressed against the upper surface 2f of the part 2d. Therefore, the ventilation passage 5 is closed and the ventilation between the outdoor O and the indoor I is stopped. Moreover, since the opening / closing member 6 is pressed against the bottom wall 2d, the opening / closing member 6 does not rattle. In particular, even if there is an error in the dimensions of the apparatus body 2, the cam blocks 10, 10 ′ and the opening / closing member 6 related to the positional accuracy of the opening / closing member 6 in the vertical direction, the dimensional error is the third plate of the first plate 31. The part 31c is absorbed by elastic deformation. Therefore, the opening / closing member 6 is reliably pressed against the bottom wall portion 2 c via the seal member 61. Therefore, it is possible to prevent a situation in which the opening / closing member 6 is loose or the sealing state of the communication hole 2e by the opening / closing member 6 is impaired. Moreover, the seal member 61 is not pressed against the bottom wall 2d with an excessively large force, and the seal member 61 can be prevented from premature deterioration.

  When the lever 72 is rotated from the off position to the on position side, the opening / closing member 6 moves leftward from the first position toward the second position. When the opening / closing member 6 moves by a predetermined distance, the second contact portion 52 abuts against the second inclined surface 22 via the first plate portion 41a. On the other hand, the first contact portion 51 is slightly separated from the first plate member 31 to the left or simply contacts. Therefore, when the lever 72 is further rotated to the on position side and the opening / closing member 6 is further moved leftward, the second contact portion 52 slides on the first plate portion 41a. At this time, since the first plate portion 41a is made of metal, the second contact portion 52 is smoothly slid compared to the case where the second contact portion 52 slides directly on the second inclined surface 22. While being able to move, abrasion of the 2nd inclined surface 22 can be prevented.

When the second contact portion 52 slides on the first plate portion 41a, the second contact portion 52 is moved upward by the cam action of the second inclined surface 22 (first plate portion 41a), and thus opens and closes. The member 6 is moved upward. As is clear from this, the second inclined surface 22 and the first plate portion 41a constitute a second cam portion, and the second cam portion and the second contact portion 52 constitute a second cam mechanism 9. .

  When the lever 72 further rotates to the on position side and the opening / closing member 6 further moves to the second position side, the second contact portion 52 passes through the first plate portion 41a and hits the arc portion 41e. Then, the 2nd contact part 52 elastically deforms the circular arc part 41e so that the front-end | tip part of the 3rd board part 41c may move below with the movement of the opening / closing member 6. FIG. Thereafter, when the opening / closing member 6 further moves to the second position side, the second contact portion 52 hits the third plate portion 41c, and the third plate portion 41c is continuously elastically deformed. As a result, the second contact portion 52 is urged upward, and the opening / closing member 6 is urged upward. When the second contact portion 52 slides on the arc portion 41e and the third plate portion 41c, the first contact portion 51 slides on the second plate portion 31b from the arc portion 31d. . When the opening / closing member 6 reaches the second position, the first contact portion 51 is pressed against the first spring receiving surface 14 via the second plate portion 31b by the elastic force of the third plate portion 41c. The vertical position of the opening / closing member 6 at this time is the upper position (open position). When the opening / closing member 6 is in the upper position, the first contact portion 51 is pressed against the first spring receiving surface 14 via the second plate portion 41b, so that the opening / closing member 6 is in the upper position without rattling. Is firmly maintained.

As is clear from the above contents, in this embodiment, the arc portion 41e and the third plate portion 41c are the second urging means for urging the opening / closing member 6 upward (in the direction from the closed position toward the open position). Has been. However, this configuration is not necessarily required, and only the third plate portion 41c may be used as the second urging means. Alternatively, only the third plate portion 41c and a part of the arc portion 41e that follows the third plate portion 41c may be used as the second urging means. In the former case, the entire arc portion 41e is a part of the second cam portion, and in the latter case, the remaining portion of the arc portion 41e (the portion following the first plate portion 41a) is a part of the second cam portion. Part. Further, the entire arc part 41e may be used as a part of the second cam part and a part of the second elastic part (second urging means). In this embodiment, the first spring receiving surface 14 serves as a second reference portion for determining the upper position (open position) of the opening / closing member. When the second plate portion 31b is brought into contact with the first horizontal surface 13 and the opening / closing member 6 is located at the second position (upper position), the first contact portion 51 is brought into contact with the first horizontal surface 13 and the second plate portion 31b. You may make it hit through. In that case, the first horizontal plane 13 becomes the second reference portion.

When the lever 72 located at the on position is rotated toward the off position, the opening / closing member 6 moves to the right from the second position toward the first position. When the opening / closing member 6 moves from the second position by a predetermined distance, the first contact portion 51 abuts against the first inclined surface 12 via the first plate portion 31 a of the first plate material 31. On the other hand, the second contact portion 52 is slightly separated from the second plate member 41 to the right or is simply in contact with the second plate member 41. Therefore, when the lever 72 is further rotated to the off position side and the opening / closing member 6 is further moved to the right, the second contact portion 51 slides on the first plate portion 31a. At this time, since the first plate portion 31a is made of metal, the first contact portion 51 is smoothly slid compared to the case where the first contact portion 51 slides directly on the first inclined surface 12. While being able to move, abrasion of the 1st inclined surface 12 can be prevented.

When the first contact portion 51 slides on the first plate portion 31a, the first contact portion 51 is moved downward by the cam action of the first inclined surface 12 (first plate portion 31a), and thus opens and closes. The member 6 is moved downward. As is clear from this, the first inclined surface 12 and the first plate portion 31a constitute a first cam portion, and the first cam portion and the first contact portion 51 constitute a first cam mechanism 8. .

  When the lever 72 further rotates to the off position side and the opening / closing member 6 further moves to the first position side, the first contact portion 51 passes through the first plate portion 31a and hits the arc portion 31e. Then, the 1st contact part 51 elastically deforms the circular arc part 31e so that the front-end | tip part of the 3rd board part 31c moves upwards with the movement of the opening / closing member 6. FIG. Thereafter, when the opening / closing member 6 further moves to the first position side, the first contact portion 51 hits the third plate portion 31c, and the third plate portion 31c is continuously elastically deformed. As a result, the second contact portion 51 is urged downward, and the opening / closing member 6 is urged downward. The second contact portion 52 is separated from the second plate member 41 when the first contact portion 51 slides on the arc portion 31e and the third plate portion 31c. Particularly, the arc portion 41d and the second plate portion 41b are spaced upward. When the opening / closing member 6 reaches the second position, the opening / closing member 6 is moved to the upper position (open position).

As is clear from the above contents, in this embodiment, the arc portion 31e and the third plate portion 31c are the first urging means for urging the opening / closing member 6 downward (in the direction from the open position to the closed position). Has been. However, this configuration is not necessarily required, and only the third plate portion 41c may be used as the first biasing means, or only the third plate portion 31c and a part of the arc portion 41e that follows the first plate portion 41c may be the first biasing force. It may be a means. In the former case, the entire arc portion 31e is a part of the first cam portion, and in the latter case, the remaining portion of the arc portion 31e (the portion following the first plate portion 41a) is a part of the first cam portion. Part. Further, the entire arc part 31e may be used as a part of the first cam part and a part of the first elastic part (first urging means).

In addition, this invention is not limited to said embodiment, A various modification is employable in the range which does not deviate from the summary.
For example, in the above embodiment, the opening / closing member 6 is configured to open / close in the up / down direction when the opening / closing member 6 is moved in the left / right direction. May be configured to open and close in the left-right direction. This is apparent from the fact that the apparatus main body 2 may be arranged such that the upper surface of the ventilation device 1 (the upper surface of the decorative lid 3) faces in the horizontal direction toward the room I side.
In the above embodiment, when the opening / closing member 6 moves in the left-right direction, it is moved in the up-down direction by the first and second cam mechanisms 8, 9 provided in the cam blocks 10, 10 ', respectively. However, like the one described in Patent Document 1, one side portion of the opening / closing member 6 is rotatably provided in the apparatus main body 2, and the other side portion of the opening / closing member 6 and the apparatus main body 2 are provided. Only the cam mechanism may be provided.
In the above embodiment, the cam block 10, 10 ′ is provided in the apparatus main body 2, but a cam block may be provided in the opening / closing member 6. In that case, the apparatus main body 2 is provided with first and second contact portions. The cam blocks 10 and 10 ′ may not be provided on either the apparatus main body 2 or the opening / closing member 6. That is, the cam blocks 10 and 10 'may be omitted. In that case, the first and second cam portions are directly provided on either the apparatus main body 2 or the opening / closing member 6, and the first and second contact portions 51 and 52 are provided on the other.
Furthermore, in the above-described embodiment, the first cam portion is configured by the first inclined surface 12 and the first plate portion 31a of the first plate member 31, but the first cam portion is only the first inclined surface 12. You may comprise. In that case, a first urging means replacing the third plate portion 31c and the arc portion 31e of the first plate material 31 is provided in the apparatus main body. The same applies to the second cam portion and the second urging means.

  The ventilator according to the present invention is provided on a wall or window of a building and can be used as a device for ventilating between the outside and the room.

I Indoor O Outdoor 1 Ventilator 2 Device body 2e Communication hole (part of ventilation passage)
2f Upper surface (first reference part)
5 Ventilation passage 6 Opening / closing member 8 First cam mechanism 9 Second cam mechanism 10 Cam block 10 'Cam block 12 First inclined surface (first support portion)
14 First spring bearing surface (second reference part)
22 2nd inclined surface (2nd support part)
31 1st board | plate material 31a 1st board part (1st cam part)
31b Second plate (extension)
31c 3rd board part (1st elastic part)
31e Arc part (first elastic part)
41 2nd board | plate material 41a 1st board part (2nd cam part)
41c 3rd board part (2nd elastic part)
41e Arc part (second elastic part)

Claims (10)

The apparatus main body (2) in which the ventilation path (5) which connects outdoor (O) and room (I) is formed, and the opening-and-closing member (6) provided in this apparatus main body (2) so that a movement was possible When the opening / closing member (6) moves in the first direction between the device body (2) and the opening / closing member (6), the opening / closing member (6) passes through the ventilation passage (5). The first cam mechanism (8) for moving the ventilation passage (5) from the open position to the closed position, and the opening / closing member (6) move in a second direction opposite to the first direction. Sometimes, a second cam mechanism (9) for moving the opening / closing member (6) from the closed position to the open position is provided, and the apparatus body (2) is brought into contact with the opening / closing member (6). A ventilation device provided with a first reference portion (2f) that defines the closed position of the opening and closing member (6). Stomach,
The device main body (2) is provided with first urging means (31c, 31e), and the first urging means (31c, 31e) moves the opening / closing member (6) moved to the closed position to the above-mentioned closing position (6). Urging from the open position side to the closed position side to press against the first reference portion (2f), thereby maintaining the open / close member (6) in the closed position;
The first cam mechanism (8) includes a first cam portion (12, 31a) provided on one of the device main body (2) and the opening / closing member (6), and a first cam provided on the other. When the opening / closing member (6) moves in the first direction, the first contact part (51) slides on the first cam part (12, 31a). By moving, the opening and closing member (6) is moved from the open position to the closed position,
The second cam mechanism (9) includes a second cam portion (22, 41a) provided on the one side and a second contact portion (52) provided on the other side, and the opening / closing member ( 6) moves in the second direction, the second contact portion (52) slides on the second cam portion (12, 31a), so that the open / close member (6) is in the closed position. To the open position,
A first elastic portion (31c, 31e) that can be elastically deformed is provided at a front end portion of the first cam portion (12, 31a) positioned forward in the first direction, and the first elastic portion (31c, 31e). ) Urges the first contact portion (51) from the open position side to the closed position side to press the opening / closing member (6) against the first reference portion (2f). Ventilator characterized by being said. The first cam portion (12, 31a) has a first support portion (12) provided on the one side and a metal first plate (31), and the first support portion (12) is provided. A first inclined surface (12) inclined with respect to the first and second directions, wherein the first plate member (31) is provided on the one side in contact with the first inclined surface (12); When the opening / closing member (6) moves in the first direction, the first contact portion (51) is in sliding contact with the first inclined surface (12) via the first plate member (31). The opening / closing member (6) is moved from the open position side to the closed position side, and a front end portion of the first plate member (31) positioned forward in the first direction is in relation to the first inclined surface (12). The front end portion of the first plate (31) is spaced apart from the open position toward the closed position, and the first elastic portion 31c, ventilator of claim 2, characterized in that there is a 31e). The second cam portion (22, 34a) has a second support portion (22) provided on the one side and a metal second plate (41), and the second support portion (22) is Having a second inclined surface (22) inclined with respect to the first and second directions, the second plate (41) being provided on the one side in contact with the second inclined surface (22); When the opening / closing member (6) moves in the second direction, the second contact portion (52) is in sliding contact with the second inclined surface (22) via the second plate (41). The ventilation apparatus according to claim 3, wherein the opening / closing member (6) is moved from the closed position side to the open position side. The first cam portion (12, 31a) has a second reference portion (14) provided subsequent to a rear end portion of the first inclined surface (12) located rearward in the first direction, An extension part (31b) brought into contact with the second reference part (14) is provided at a rear end part of the first plate member (31) located rearward in one direction, and the first contact part (51) is provided. By hitting the second reference portion (14) via the extension portion (31b), the opening position of the opening and closing member (6) is determined,
A second elastic portion (41c, 41e) that can be elastically deformed is provided at a front end portion of the second plate member (41) positioned forward in the second direction, and the second elastic portion (41c, 41e) is provided in the second direction. The contact portion (52) is urged from the closed position side to the open position side, and the first contact portion (51) is pressed against the second reference portion (14) through the extension portion (31b). Thus, the opening / closing member (6) is maintained in the open position. A cam block (10, 10 ') made of hard resin is fixed to the apparatus body (2), and the first and second cams are interposed between the cam block (10, 10') and the opening / closing member (6). Ventilation device according to claim 2, characterized in that a mechanism (8, 9) is provided. The first cam mechanism (8) includes a first cam portion (12, 31a) provided on the cam block (10, 10 ') and a first contact portion (provided on the opening / closing member (6)). 51), and when the opening / closing member (6) moves in the first direction, the first contact portion (51) slides on the first cam portion (12, 31a). The opening / closing member (6) is moved from the open position to the closed position;
The second cam mechanism (9) includes a second cam portion (22, 41a) provided in the cam block (10, 10 ') and a second contact portion (provided in the opening / closing member (6)). 52), and when the opening / closing member (6) moves in the second direction, the second contact portion (52) slides on the second cam portion (22, 41a). The ventilator according to claim 6, wherein the opening / closing member (6) is moved from the closed position to the open position. The first cam portion (12, 31a) includes a first support portion (12) provided on the cam block (10, 10 ') and a metal first plate member (31). One support portion (12) has a first inclined surface (12) inclined with respect to the first and second directions, and the first plate (31) is in contact with the first inclined surface (12). Provided in the cam block (10, 10 '), and when the opening / closing member (6) moves in the first direction, the first contact portion (51) is placed on the first inclined surface (12). The opening / closing member (6) is moved from the open position side to the closed position side by sliding contact with the first plate material (31), and the first plate material (31) positioned forward in the first direction. Is separated from the first inclined surface (12) in the direction from the open position to the closed position. The ventilator according to claim 7, wherein the front end portion is the first elastic portion (31c, 31e). The second cam portion (22, 41a) includes a second support portion (22) provided on the cam block (10, 10 ') and a metal second plate member (41). 2 The support portion (22) has a second inclined surface (22) inclined with respect to the first and second directions, and the second plate member (41) is in contact with the second inclined surface (22). Provided in the cam block (10, 10 '), and when the opening / closing member (6) moves in the second direction, the second contact portion (52) is placed on the second inclined surface (22). The ventilation apparatus according to claim 8, wherein the opening / closing member (6) is moved from the closed position side to the open position side by sliding contact with the second plate member (41). The first cam portion (12, 31a) has a second reference portion (14) provided subsequent to a rear end portion of the first inclined surface (12) located rearward in the first direction, An extension part (31b) brought into contact with the second reference part is provided at a rear end part of the first plate member (31) positioned rearward in one direction, and the first contact part (51) is provided in the second part. By hitting the reference portion (14) through the extension portion (31b), the open position of the opening and closing member (6) is defined,
A second elastic portion (41c, 41e) that can be elastically deformed is provided at a front end portion of the second plate member (41) positioned forward in the second direction, and the second elastic portion (41c, 41e) is provided in the second direction. By urging the contact portion (52) from the closed position side to the open position side and pressing the first contact portion against the second reference portion (14) via the extension portion (31b), The ventilation device according to claim 9, wherein the opening and closing member (6) is maintained in the open position.
The ventilation device according to any one of claims 4, 5, 9, and 10, wherein the first and second plate members (31, 41) are formed in the same shape.

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