JP6193159B2 - Ventilation door opening and closing mechanism - Google Patents

Description

  The technology of the present disclosure relates to a ventilation door opening / closing mechanism having a ventilation function in a door body.

  An opening / closing mechanism for a ventilation door that opens and closes a ventilation hole formed in the door body by rotation of the ventilation door is incorporated in the door body having a ventilation function. Such a vent door opening / closing mechanism energizes the vent door toward the closed position before the closed position when the vent door is closed, and opens the vent door before the open position when the vent door is opened. (See, for example, Patent Document 1).

JP 2000-130041 A

By the way, in the opening / closing mechanism of the ventilating door described above, the rotational speed of the ventilating door is determined by the biasing force of the biasing member. Therefore, when the biasing force is excessively small, , Excessive operating force is required. On the other hand, when the urging force is excessively large, the impact received by the ventilation door is excessive when the ventilation door reaches the closed position. After all, the above-described opening / closing mechanism for the ventilation door leaves room for improvement in terms of enhancing the operability of the ventilation door.
It is an object of the present disclosure to provide a ventilation door opening / closing mechanism capable of enhancing the operability of the ventilation door.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
One aspect of the opening / closing mechanism of the ventilation door in the present disclosure is a ventilation door opening / closing mechanism having a ventilation function provided in the door body. The opening / closing mechanism of the ventilation door includes a striker that interlocks with the opening and closing of the ventilation door, a sliding portion that the striker slides, a holding portion that holds the biasing member, and a contact member that contacts the braking member. A cam having a contact portion, interlocking with the movement of the striker, the biasing member for applying a biasing force to the cam to hold the ventilation door in an open position and a closed position, and the ventilation door And at least the braking member that applies a braking force against the biasing force against the urging force at the time of closing.

  According to one aspect of the opening / closing mechanism of the ventilation door described in the present disclosure, when the ventilation door is closed, an urging force for holding the ventilation door in the closed position and a braking force against the urging force are provided. Acts on the cam. And as a result of the movement of the cam and the closing movement of the ventilation door being linked via the striker, the closing movement of the ventilation door is braked. Therefore, when the ventilation door closes at least, it can produce a high-class feeling due to the closing of the ventilation door, and it is also possible to prevent fingers from being caught between the ventilation door and the part that supports it. . Further, before the ventilation door reaches the open position, the biasing force for holding the ventilation door in the open position acts on the cam, so that the opening of the ventilation door proceeds smoothly. Therefore, it is possible to smoothly bring the ventilation door to the closed position at a speed adjusted by the braking member, to smoothly reach the opening position, and to improve the operability of the ventilation door. is there.

  In another aspect of the opening / closing mechanism of the ventilating door according to the present disclosure, the braking member has a shape extending along the extending direction and applies the braking force along the extending direction, and the abutting portion includes: It is preferable to include a surface along a direction orthogonal to the extending direction.

  According to another aspect of the opening / closing mechanism of the ventilating door described in the present disclosure, the direction in which the braking force acts on the cam and the surface on which the braking force acts on the cam are orthogonal to each other, and thus acts on the cam. Variations in the magnitude of the braking force can be suppressed.

  In another aspect of the opening / closing mechanism of the ventilation door according to the present disclosure, the cam, the urging member, and the braking member are arranged along an extending direction that is an extending direction of the braking member, and the cam is It is preferable to be located between the urging member and the braking member.

  According to another aspect of the opening / closing mechanism of the ventilation door described in the present disclosure, the cam, the biasing member, and the braking member are arranged along the extending direction that is one direction, and the biasing member and the braking member are braked. A cam is located between the members. Therefore, it is possible to suppress an increase in the space occupied by the opening / closing mechanism of the ventilation door in the direction orthogonal to the extending direction. For example, if the extending direction is a direction along the edge of the door body, it is possible to suppress an increase in the space occupied by the opening / closing mechanism of the ventilation door in the thickness direction of the door body.

  In another aspect of the opening / closing mechanism for the ventilation door according to the present disclosure, it is preferable that the sliding portion is located on a bottom surface of the cam extending along an extending direction that is a direction in which the braking member extends.

  According to another aspect of the opening / closing mechanism for the ventilation door described in the present disclosure, the extending direction of the bottom surface where the sliding portion is located and the extending direction of the braking member are common extending directions. Therefore, the space occupied by the opening / closing mechanism of the ventilation door can be designed in a shape along the extending direction. As a result, for example, a shape suitable for disposing the opening / closing mechanism of the ventilation door along one side of the frame of the ventilation door can be adopted in the opening / closing mechanism of the ventilation door.

  In another aspect of the opening / closing mechanism of the ventilation door according to the present disclosure, the striker includes a rotation shaft of the ventilation door and a striker pin extending along a direction opposite to a direction in which the rotation shaft extends, and the striker pin is It is preferable to slide the sliding part.

  According to the other aspect of the opening / closing mechanism of the ventilation door in the present disclosure, the rotating shaft included in the striker interlocks the opening and closing of the ventilation door with the sliding of the striker. Moreover, the striker pin with which the striker is provided links the movement of the striker and the movement of the cam. And the striker which is one member has the function to link the movement of a ventilation door and the movement of a striker, and the function to link the movement of a striker and the movement of a cam. Therefore, the number of members in the ventilating door opening / closing mechanism can be reduced, and the occupied space associated with the increase in the number of members can be reduced as compared with the configuration in which other members other than the striker perform a part of these functions. Expansion is suppressed in the opening / closing mechanism of the ventilation door.

  In another aspect of the vent door opening / closing mechanism according to the present disclosure, the cam further includes a case that houses the cam, the biasing member, and the brake member, and the case is detachable from a frame that supports the vent door. Preferably it is attached.

  According to the other aspect of the opening / closing mechanism of the ventilation door in the present disclosure, the case is attached in a state that it can be attached to and detached from the frame that supports the ventilation door. Therefore, when the opening / closing mechanism of the ventilation door is assembled to the door body, the case can be assembled to the frame after the frame is assembled to the door body. Further, when removing the opening / closing mechanism of the ventilation door from the door body, it is possible to remove only the opening / closing mechanism of the ventilation door from the frame assembled to the door body. Therefore, assembly of the opening / closing mechanism of the ventilation door and maintenance of the opening / closing mechanism of the ventilation door are easy.

It is a front view showing the front structure of the opening and closing mechanism of the ventilation door in an embodiment that embodies the opening and closing mechanism of the ventilation door in the present disclosure, and a ventilation unit including the opening and closing mechanism of the ventilation door, and an interior door including the ventilation unit It is a figure shown with. It is a perspective view which shows the perspective structure of the opening / closing mechanism of the ventilation door with which the ventilation unit in one Embodiment is provided, Comprising: It is a figure which shows a ventilation door with a solid line and a part of interior door with a dashed-two dotted line with the opening / closing mechanism. It is a perspective view which shows the perspective structure of the 1st horizontal unit frame with which the ventilation unit in one Embodiment is provided. It is a front sectional view showing a front sectional structure of a second horizontal unit frame with which the ventilation unit in one embodiment is provided, and is a view showing a part of the exterior frame cut out. It is a perspective view which shows the perspective structure of the 1st door cap with which the ventilation unit in one Embodiment is provided. It is a top view which shows the planar structure of the 1st door cap with which the ventilation unit in one Embodiment is provided. It is a front sectional view showing a front sectional structure of a ventilation unit in one embodiment. FIG. 8 is a cross-sectional view taken along line AA of FIG. 7, illustrating a cross-sectional structure of the ventilation unit when the ventilation door is located at the closed position in the ventilation unit according to the embodiment. FIG. 8 is a cross-sectional view taken along the line AA in FIG. 7, and is a cross-sectional view illustrating a cross-sectional structure of the ventilation unit when the ventilation door is located in the open position in the ventilation unit according to the embodiment. It is BB sectional drawing of FIG. 7, Comprising: It is sectional drawing which shows the cross-section of a ventilation unit when a ventilation door is located in a closed position in the ventilation unit in one Embodiment. It is BB sectional drawing of FIG. 7, Comprising: It is sectional drawing which shows the cross-section of a ventilation unit when a ventilation door is located in an open position in the ventilation unit in one Embodiment. It is a disassembled perspective view which shows the perspective structure of each component which comprises the opening / closing mechanism of the ventilation door in one Embodiment. It is a perspective view which shows the perspective structure of the cam in one Embodiment. It is a top view which shows the internal structure of the opening / closing mechanism of the ventilation door in one Embodiment, Comprising: It is a figure which shows the relative position of a striker pin and a sliding part when a ventilation door is located in a closed position. It is a top view which shows the internal structure of the opening / closing mechanism of the ventilation door in one Embodiment, Comprising: It is a figure which shows the relative position of a striker pin and a sliding part when a ventilation door rotates to an open position. It is a top view which shows the internal structure of the opening / closing mechanism of the ventilation door in one Embodiment, Comprising: It is a figure which shows the relative position of a striker pin and a sliding part when a ventilation door is located in a closed position. It is a perspective view which shows the perspective structure of the ventilation unit in a modification. It is a front sectional view showing a front sectional structure of a ventilation unit in a modification.

  One embodiment in which the opening / closing mechanism of the ventilation door in the present disclosure is embodied as the opening / closing mechanism of the ventilation door in the interior door will be described below.

  As FIG. 1 shows, the interior door D which is an example of a door body is a hinged door which divides | segments space in a house, for example. The interior door D includes a first vertical fence D1 extending along the vertical direction and a second vertical fence D2 extending along the vertical direction. The first vertical fence D1 and the second vertical fence D2 are arranged in the vertical direction. It sandwiches two ventilation units 10 extending along. One ventilation unit 10 includes a unit frame F having a rectangular frame shape extending in the vertical direction, a ventilation door W, and a ventilation door opening / closing mechanism. One ventilation door W is constituted by a partition plate G extending along the vertical direction and a door frame FG surrounding the partition plate G. The structure of each of the two ventilation units 10 is plane symmetric with respect to a horizontal plane passing between the two ventilation units 10. Hereinafter, among the two ventilation units 10 arranged in the vertical direction, the upper ventilation unit 10 will be mainly described, and the description that overlaps in the lower ventilation unit 10 will be omitted.

[Ventilation unit 10]
As shown in FIG. 2, the unit frame F included in the ventilation unit 10 includes a first horizontal unit frame 11, a first vertical unit frame 131, a second vertical unit frame 132, and a second horizontal unit frame 15. Has been. Each of the first horizontal unit frame 11 and the second horizontal unit frame 15 has a plate shape extending along the horizontal direction. The first vertical unit frame 131 has a column shape extending along the vertical direction, and the second vertical unit frame 132 also has a column shape extending along the vertical direction.

  The structure of each of the first vertical unit frame 131 and the second vertical unit frame 132 rotates with respect to a straight line along the vertical direction passing between the first vertical unit frame 131 and the second vertical unit frame 132. Symmetric. The lower ends of the first vertical unit frame 131 and the second vertical unit frame 132 are screwed to the first horizontal unit frame 11, and the first vertical unit frame 131 and the second vertical unit frame 132 are each Is fixed to the second horizontal unit frame 15 by screws. The unit frame F has a rectangular frame shape, divides a ventilation hole as one hole into the ventilation unit 10, and accommodates one ventilation door inside the ventilation hole.

  The door frame provided in the ventilation door includes a first door cap 12, a first door vertical frame F 1, a second door vertical frame F 2, and a second door cap 14. Each of the first door cap 12 and the second door cap 14 has a block shape extending along the lateral direction. Each of the first door vertical frame F1 and the second door vertical frame F2 has a column shape extending along the vertical direction. The lower ends of each of the first door vertical frame F1 and the second door vertical frame F2 are screwed to the first door cap 12, and each of the first door vertical frame F1 and the second door vertical frame F2 is fixed. The upper end is screwed to the second door cap 14. The door frame has a rectangular frame shape and borders, for example, a partition plate G such as a glass plate.

[First horizontal unit frame 11]
As shown in FIG. 3, the first horizontal unit frame 11 includes a first shaft support plate portion 11 </ b> P having a square plate shape extending in the horizontal direction. Both ends of the first shaft support plate portion 11P are screwed to the lower end portion of the first vertical unit frame 131 and the lower end portion of the second vertical unit frame 132 in the extending direction of the first shaft support plate portion 11P. Is done.

  One surface of the first shaft support plate portion 11P is a first shaft support surface 11S. In the first shaft support surface 11S, a first rotation shaft 11A having a columnar shape extending along the vertical direction protrudes from the approximate center in the horizontal direction. In the first shaft support surface 11S, the first rotation locking portions 11B having a pentagonal prism shape protrude on both sides in the lateral direction with respect to the first rotation shaft 11A.

[Second horizontal unit frame 15]
As shown in FIG. 4, the second horizontal unit frame 15 includes a second shaft support plate portion 15 </ b> P having a square plate shape extending in the horizontal direction. Further, the second horizontal unit frame 15 is positioned on the back side of the paper surface with respect to the exterior plate 15F positioned on the near side of the paper surface with respect to the second shaft support plate portion 15P and the second shaft support plate portion 15P. And an exterior plate 15F. Each of the two exterior plates 15F has a square plate shape extending along the horizontal direction, like the second shaft support plate portion 15P.

  In the extending direction of the second shaft support plate portion 15P, both ends of the second shaft support plate portion 15P are screwed to the upper end portion of the first vertical unit frame 131 and the upper end portion of the second vertical unit frame 132. Is done. The second shaft support plate portion 15P has two edges extending in the lateral direction, and each of the two edges is connected to the exterior plate 15F facing each other. The second shaft support plate portion 15P and the two exterior plates 15F constitute one second horizontal unit frame 15 having a U shape when viewed from the lateral direction, and are one space that extends along the lateral direction. The storage space 15V is partitioned.

  One surface of the second shaft support plate portion 15P is a second shaft support surface 15S. In the second shaft support surface 15S, a shaft insertion hole 15H having a circular hole shape extending along the vertical direction passes through substantially the center in the horizontal direction. In the shaft insertion hole 15H, second rotation locking portions 15B having a rectangular plate shape protrude from both sides in the lateral direction with respect to the shaft insertion hole 15H. Each of the two second rotation locking portions 15B has a shape in which a part of the second shaft support plate portion 15P is cut and raised toward the first shaft support plate portion 11P. The tip of each of the two second rotation locking portions 15B is covered with an elastic cap 15C and faces the first rotation locking portion 11B included in the first horizontal unit frame 11.

[First door cap 12]
The first door cap 12 and the second door cap 14 include covering plate portions 12P and 14P that cover the edges of the partition plate G, and connecting cylinder portions 12F and 14F that are connected to the unit frame F, respectively. Each structure of the first door cap 12 and the second door cap 14 is plane-symmetric with respect to a horizontal plane between the first door cap 12 and the second door cap 14. Below, the structure of the 1st door cap 12 is mainly demonstrated and the description which overlaps in the 2nd door cap 14 is omitted.

  As shown in FIG. 5, the covering plate portion 12 </ b> P included in the first door cap 12 has a plate shape along the horizontal direction so as to cover the edge of the partition plate G. Both ends in the horizontal direction of the covering plate portion 12P are screwed to the first door vertical frame F1 and the second door vertical frame F2.

  The connection cylinder part 12F in the 1st door cap 12 has a rhombus cylinder shape extended along the vertical direction from the substantially horizontal center in the coating | coated board part 12P. The peripheral wall of the connecting cylinder portion 12F extends along the lateral direction and faces each other, and the two wall portions 12W1 extend along a direction having an inclination of about 45 ° with respect to the lateral direction and face each other. It is comprised from the two wall parts 12W2. A cylindrically supporting shaft portion 12A having a cylindrical shape extends in the longitudinal direction substantially in the center of the connecting tube portion 12F. A shaft support hole 12H, which is a circular hole extending along the vertical direction, is formed in the shaft support cylinder portion 12A.

  As shown in FIG. 6, four different locking walls protrude from the outer peripheral surface of the shaft support tube portion 12 </ b> A toward the outside of the shaft support tube portion 12 </ b> A on the outer surface of the shaft support tube portion 12 </ b> A. . Each of the four locking walls is located at substantially equal intervals on the outer peripheral surface of the shaft support cylinder portion 12A. Among the four locking walls, the two open locking walls 12S1 are positioned so as to face each other with the central axis of the shaft support cylinder portion 12A interposed therebetween. Of the four locking walls, the two closing locking walls 12S2 are also positioned so as to face each other with the central axis of the shaft support cylinder portion 12A interposed therebetween. Each of the four locking walls is connected to the inner side surface of the connecting tube portion 12F, and the gap between the connecting tube portion 12F and the shaft supporting tube portion 12A is divided into four in the circumferential direction of the shaft supporting tube portion 12A. doing.

  Two mutually different shaft support pieces 12G protrude from the inner peripheral surface of the shaft support tube portion 12A toward the central axis of the shaft support tube portion 12A on the inner periphery surface of the shaft support tube portion 12A. The two shaft support pieces 12G have a T-shape when viewed from the direction along the central axis of the shaft support tube portion 12A, and include a planar wall extending along the tangential direction of the inner peripheral surface of the shaft support tube portion 12A. ing. The two shaft support pieces 12G are positioned so as to face each other with the central axis of the shaft support tube portion 12A interposed therebetween.

  Here, when the first rotating shaft 11A having the cylindrical shape of the first horizontal unit frame 11 is positioned between the two shaft support pieces 12G of the first door cap 12, the first rotating shaft 11A has two shafts. The first rotary shaft 11A is pivotally supported by the two shaft support pieces 12G in a state in which it can slide in contact with the support piece 12G. On the other hand, for example, when the rotation shaft having a quadrangular prism shape is positioned between the two shaft support pieces 12G, the rotation shaft is fixed with respect to the two shaft support pieces 12G. It is supported by two shaft support pieces 12G.

  Note that the cover plate portion 14 </ b> P included in the second door cap 14 is screwed to the first door vertical frame F <b> 1 and the second door vertical frame F <b> 2 in the same manner as the first door cap 12. Similarly to the first door cap 12, the connecting cylinder portion 14 </ b> F included in the second door cap 14 has a shaft supporting cylinder portion 14 </ b> A extending in the vertical direction in the cylinder. Further, like the first door cap 12, the clearance between the pivot supporting cylinder portion 14A and the connecting cylinder portion 14F is divided into four by the two opening locking walls 14S1 and the two closing locking walls 14S2. It is partitioned. Two shaft support pieces 14G facing each other are located in the shaft support hole 14H formed in the shaft support tube portion 14A.

[Horizontal unit frame and door cap]
As shown in FIG. 7, the first rotation shaft 11 </ b> A included in the first horizontal unit frame 11 is inserted into the shaft support cylinder portion 12 </ b> A included in the first door cap 12. Accordingly, the first door cap 12 is supported by the first horizontal unit frame 11 in a state where the first door cap 12 can rotate with respect to the first horizontal unit frame 11.

  Each of the two first rotation locking portions 11B included in the first horizontal unit frame 11 is inserted into a gap between the shaft supporting tube portion 12A and the connecting tube portion 12F in the first door cap 12. The gap into which the first rotation locking portion 11B is inserted is a space defined by the opening locking wall 12S1 and the closing locking wall 12S2, and is opposed to each other across the shaft support cylinder portion 12A. .

  In the accommodation space 15V formed in the second horizontal unit frame 15, an opening / closing mechanism 20 for the ventilation door is accommodated. The ventilating door opening / closing mechanism 20 includes a second rotating shaft 25A extending in the vertical direction at substantially the center in the horizontal direction. The second rotation shaft 25 </ b> A has a quadrangular prism shape extending along the vertical direction, and passes through the shaft insertion hole 15 </ b> H provided in the second horizontal unit frame 15.

  The second rotating shaft 25 </ b> A provided in the ventilation door opening / closing mechanism 20 is inserted into the shaft support cylinder portion 14 </ b> A provided in the second door cap 14. Each of the two second rotation locking portions 15B included in the second horizontal unit frame 15 is inserted into a gap between the shaft supporting tube portion 14A included in the second door cap 14 and the connecting tube portion 14F together with the elastic cap 15C. It is.

  Each of the two second rotation locking portions 15B included in the second horizontal unit frame 15 is inserted into a gap between the shaft supporting tube portion 14A and the connecting tube portion 14F in the second door cap 14. The gap into which the second rotation locking portion 15B is inserted is a space defined by the opening locking wall 14S1 and the closing locking wall 14S2, and is opposed to each other with the shaft support cylinder portion 14A interposed therebetween. .

  As shown in FIG. 8, the mutually opposite shaft support pieces 12 </ b> G are in contact with the circumferential surface of the first rotation shaft 11 </ b> A and allow the first door cap 12 to rotate with respect to the first horizontal unit frame 11. When the ventilation door W is located at the closed position, the ventilation hole H surrounded by the unit frame F is closed by the ventilation door W. Further, when the ventilation door W is located at the closed position, each of the two first rotation locking portions 11B is in contact with different closing movement locking walls 12S2.

  When the ventilation door W is located at the closed position, the ventilation door W rotates counterclockwise in FIG. 8 from the closed position due to the contact between the first rotation locking portion 11B and the closing locking wall 12S2. It is forbidden. Further, the ventilation door W is allowed to rotate clockwise in FIG. 8 (in the direction of the arrow in FIG. 8) from the closed position by the clearance between the first rotation locking portion 11B and the opening locking wall 12S1. .

  As shown in FIG. 9, when the ventilation door W is located at the open position, the edge of the ventilation door W is separated from the unit frame F, and ventilation as indicated by a thick arrow is allowed in the ventilation hole H. Each of the two first rotation locking portions 11B is in contact with different opening locking walls 12S1.

  When the ventilation door W is located at the open position, the ventilation door W rotates clockwise in FIG. 9 relative to the open position due to the contact between the first rotation locking portion 11B and the opening locking wall 12S1. It is forbidden. Further, the ventilation door W is allowed to rotate counterclockwise in FIG. 9 (in the direction of the arrow in FIG. 9) from the open position by the clearance between the first rotation locking portion 11B and the closing locking wall 12S2. The

  As shown in FIG. 10, the shaft support pieces 14G facing each other are in contact with the outer peripheral surface of the second rotating shaft 25A, and the second door cap 14 always follows the rotation of the second rotating shaft 25A. When the ventilation door W is located at the closed position, each of the two second rotation locking portions 15B is in contact with different closing locking walls 14S2 via the elastic cap 15C.

  When the ventilation door W is located at the closed position, the rotation of the ventilation door W counterclockwise in FIG. 10 relative to the closed position is a contact between the second rotation locking portion 15B and the closing locking wall 14S2. Prohibited by. Further, the ventilation door W is allowed to rotate clockwise in FIG. 10 from the closed position (in the direction of the arrow in FIG. 10) by the gap between the second rotation locking portion 15B and the opening locking wall 14S1. .

  As shown in FIG. 11, when the ventilation door W is located at the open position, each of the two second rotation locking portions 15B comes into contact with different opening locking walls 14S1 via the elastic cap 15C. Yes.

  When the ventilation door W is located at the open position, the ventilation door W rotates clockwise in FIG. 11 relative to the open position due to the contact between the second rotation locking portion 15B and the opening locking wall 14S1. It is forbidden. Further, the ventilation door W is allowed to rotate counterclockwise in FIG. 11 (in the direction of the arrow in FIG. 11) from the open position by the clearance between the second rotation locking portion 15B and the closing locking wall 14S2. The

  According to the engagement between the second horizontal unit frame 15 and the second door cap 14 described above, the ventilation door W rotates as the second rotating shaft 25A rotates. Then, according to the engagement between the first horizontal unit frame 11 and the first door cap 12, when the ventilation door W rotates, resistance due to contact between the ventilation door W and the first rotation shaft 11A is suppressed. Therefore, the rotation of the ventilation door W smoothly follows the rotation of the second rotation shaft 25A.

  Further, when the ventilation door W is located at the open position, the ventilation door W is opened more than the open position, the contact between the first rotation locking portion 11B and the opening locking wall 12S1, and the elastic cap 15C. It is prohibited by contact with the opening locking wall 14S1. Therefore, the ventilating door W that receives the rotational force of the second rotating shaft 25 </ b> A is prevented from opening from the open position at both ends in the vertical direction of the ventilating door W. As a result, the posture of the ventilation door W in the open position is reproduced with high accuracy without being twisted every time the ventilation door W is opened.

  In addition, when the ventilation door W is located at the closed position, the ventilation door W is moved closer than the closed position, and the contact between the first rotation locking portion 11B and the closing movement locking wall 12S2 and the elastic cap It is prohibited by contact between 15C and the closing movement locking wall 14S2. Therefore, it is possible to prevent the ventilation door W receiving the rotational force of the second rotation shaft 25 </ b> A from closing from the closed position at both longitudinal ends of the ventilation door W. As a result, the posture of the ventilation door W in the closed position is reproduced with high accuracy without being twisted every time the ventilation door W is closed.

[Ventilation door opening / closing mechanism 20]
As shown in FIG. 12, the opening / closing mechanism 20 for the ventilation door includes a casing composed of a case 21 and a cover 22. A coil spring 23, which is an example of an urging member, a cam 24, a striker 25, and a damper 26, which is an example of a braking member, are housed inside the housing. The coil spring 23 has a spiral shape extending along the lateral direction, and the cam 24 has a rectangular parallelepiped shape that also extends along the lateral direction. The damper 26 has a cylindrical shape that also extends in the lateral direction, and the coil spring 23, the cam 24, and the damper 26 are arranged in the lateral direction. A cam 24 is located between the coil spring 23 and the damper 26.

  The case 21 has a box shape extending in the horizontal direction, is accommodated in an accommodation space 15 </ b> V of the second horizontal unit frame 15, and is fixed to the second horizontal unit frame 15. The case 21 has a bottom wall facing the second horizontal unit frame 15. The case 21 may be fixed to the second horizontal unit frame 15 by screwing the bottom wall to the second horizontal unit frame 15, or a locking claw provided on the case 21 separately from the second horizontal unit frame 15. It may be stopped.

  The case 21 is preferably detachable from the second horizontal unit frame 15. If the case 21 is detachable, when the opening / closing mechanism of the ventilation door is assembled to the interior door D, the second lateral unit frame 15 is ventilated after the second lateral unit frame 15 is assembled to the interior door D. A door opening / closing mechanism can be attached. Therefore, the work of assembling the opening / closing mechanism of the ventilation door to the interior door D is easy. Further, when the opening / closing mechanism of the ventilation door is removed from the interior door D, only the opening / closing mechanism of the ventilation door can be removed from the second horizontal unit frame 15 assembled to the interior door D. Therefore, the maintenance of the case 21 and the coil spring 23, the cam 24, and the damper 26 accommodated in the case 21 is easy.

  One end portion in the lateral direction of the case 21 includes a spring support portion 213 having a column shape extending along the lateral direction. The spring support portion 213 passes inside the coil spring 23 and supports the coil spring 23 along the lateral direction.

  At the other end of the case 21 in the lateral direction, two damper locking claws 216 extending in the lateral direction and having plate shapes facing each other protrude from the bottom wall of the case 21. A damper 26 extending in the lateral direction is positioned in the gap between the two damper locking claws 216, and the two damper locking claws 216 fix the damper 26 inside the case 21.

  Two cam guide ribs 214 having protruding ridges facing each other extend in the lateral direction between the spring support portion 213 and the damper locking claws 216 on the side wall of the case 21. A cam 24 having a rectangular parallelepiped shape extending in the lateral direction is located in the gap between the two cam guide ribs 214. The two cam guide ribs 214 restrict the position of the cam 24 in the vertical direction to the inside of the case 21 and allow the cam 24 to move along the horizontal direction.

  A shaft insertion hole 215 </ b> A that is a circular hole passes through the bottom wall of the case 21 between the spring support portion 213 and the damper locking claw 216. A guide hole 215B having an arc shape passes through the bottom wall of the case 21 and between the shaft insertion hole 215A and the damper locking claw 216. The shaft insertion hole 215A and the guide hole 215B have one common center.

  The coil spring 23 has a spiral shape extending in the lateral direction, and a spring support portion 213 passes through the inside of the coil spring 23. The coil spring 23 substantially matches the extending direction and the lateral direction of the coil spring 23 by the support of the spring support portion 213. The coil spring 23 applies an urging force directed from the spring support portion 213 toward the damper locking claw 216 to the cam 24 substantially along the lateral direction.

  The cam 24 has a rectangular parallelepiped shape extending along the lateral direction, and has a bottom surface 24 </ b> C that is a surface facing the bottom wall of the case 21, and two end portions facing each other in the lateral direction. One end portion of the cam 24 is a holding portion 24 </ b> H for holding the coil spring 23. The holding portion 24 </ b> H has a bottomed cylindrical shape extending along the lateral direction, and opens toward the spring support portion 213. The holding portion 24 </ b> H accommodates the end portion of the coil spring 23 and receives the biasing force from the coil spring 23. The other end of the cam 24 is an abutting portion for abutting against the damper 26. The contact portion has a rectangular parallelepiped shape extending along the lateral direction, and has a contact surface 24P facing the damper locking claw 216. The contact surface 24P extends along a direction orthogonal to the lateral direction.

  The striker 25 includes a main body having a disk shape that extends along a direction orthogonal to the vertical direction. The main body portion of the striker 25 is formed integrally with a second rotating shaft 25A that extends along the vertical direction from the center of the main body portion toward the ventilation door W. Further, the main body portion of the striker 25 is formed integrally with a striker pin 25 </ b> S that is positioned on the outer side in the radial direction of the main body portion and extends along the vertical direction toward the cam 24. Further, the main body portion of the striker 25 is formed integrally with a guide pin 25B that is located radially outside the main body portion and extends along the vertical direction toward the ventilation door W.

  The second rotation shaft 25 </ b> A included in the striker 25 passes through a shaft insertion hole 215 </ b> A formed in the case 21 and is inserted into the shaft support tube portion 14 </ b> A of the second door cap 14. The striker pin 25 </ b> S included in the striker 25 is located between the bottom surface 24 </ b> C of the cam 24 and the bottom wall of the case 21 in a state where the striker pin 25 </ b> S can slide on the bottom surface 24 </ b> C of the cam 24. The guide pin 25B provided in the striker 25 passes through the guide hole 215B formed in the case 21 and rotates along the guide hole 215B. The rotation of the second rotation shaft 25A is guided around the central axis of the shaft insertion hole 215A by guiding the rotation of the guide pin 25B to the guide hole 215B.

  The damper 26 is a cylinder damper having a columnar shape extending along the horizontal direction, and includes a damper pin 26P extending along the horizontal direction. The damper pin 26 </ b> P moves forward from the coil spring 23 toward the damper 26, and moves backward from the damper 26 toward the coil spring 23. When the damper pin 26P receives a force from the coil spring 23 toward the damper 26, the damper 26 brakes the forward movement of the damper pin 26P. Further, when the force from the coil spring 23 toward the damper 26 is released from the damper pin 26P, the damper 26 automatically moves the damper pin 26P backward.

[Cam 24]
As shown in FIG. 13, an open position guide groove 24 </ b> A and a closed position guide groove 24 </ b> B are formed on the bottom surface 24 </ b> C of the cam 24. The open position guide groove 24A and the closed position guide groove 24B constitute one groove continuous to each other, and constitute one slide contact portion having a curved shape protruding from the holding portion 24H toward the contact surface 24P. ing. The cam 24 includes two side end faces that extend in the lateral direction and face each other, and the two side end faces face an open side end face 24SA facing one exterior plate 15F and the other exterior plate 15F. It is comprised from the closed side end surface 24SB.

  The open position guide groove 24A is a groove that opens to the open side end face 24SA, and has a groove width that allows the striker pin 25S to be in sliding contact with the groove side surface of the open position guide groove 24A. The part closer to the open side end face 24SA in the open position guide groove 24A is closer to the holding portion 24H in the lateral direction, and the part closer to the closed side end face 24SB in the open position guide groove 24A is closer to the contact surface 24P in the lateral direction. .

  The closed position guide groove 24B is a groove that opens to the closed side end face 24SB, and has a groove width that allows the striker pin 25S to be in sliding contact with the groove side surface of the closed position guide groove 24B. In the closed position guide groove 24B, the portion closer to the closed side end surface 24SB is closer to the holding portion 24H in the lateral direction, and in the closed position guide groove 24B, the portion closer to the open side end surface 24SA is closer to the contact surface 24P in the lateral direction. .

  The part where the open position guide groove 24A and the closed position guide groove 24B are connected is closer to the open side end face 24SA than to the closed side end face 24SB. The length of the closed position guide groove 24B is longer than the length of the open position guide groove 24A, and the sliding distance of the striker pin 25S in the sliding portion is greater in the closed position guide groove 24B than in the open position guide groove 24A. long.

  A guide groove 24G extending in the lateral direction is formed in each of the open side end surface 24SA and the closed side end surface 24SB. When the cam guide rib 214 provided in the case 21 is fitted into the guide groove 24G provided in the cam 24, the movement of the cam 24 is guided along the lateral direction. Of the movements along the lateral direction of the cam 24, the movement of the cam 24 approaching the damper 26 is the forward movement of the cam 24, and the movement of the cam 24 approaching the spring support portion 213 is the backward movement of the cam 24. .

[Operation of the ventilation door opening / closing mechanism 20]
Each of FIGS. 14 to 16 is an operation diagram showing the operation of the opening / closing mechanism 20 of the ventilation door, and FIG. 14 shows the relative relationship between the striker pin 25S and the sliding portion when the ventilation door W is located at the closed position. FIG. FIG. 15 is a diagram illustrating a relative position between the striker pin 25S and the sliding portion when the ventilation door W is rotated toward the open position. FIG. 16 is a diagram illustrating a relative position between the striker pin 25S and the sliding portion when the ventilation door W is located at the open position. 14 to 16 show the position in the lateral direction of the contact surface 24P, the position in the lateral direction of the striker pin 25S, and the position in the lateral direction of the tip of the coil spring 23 on the coordinate axis along the lateral direction. .

  As shown in FIG. 14, when the ventilation door W is located at the closed position, the striker pin 25S is located at the end on the closed side end face 24SB side in the closed position guide groove 24B, and is located at the pin closed position 5PC in the lateral direction. doing. Further, the contact surface 24P included in the cam 24 is positioned at the contact closed position 4PC in the lateral direction, and the damper pin 26P included in the damper 26 is in contact with the contact surface 24P. The tip of the coil spring 23 is located at the spring closed position 3PC in the lateral direction.

  At this time, the biasing force applied to the cam 24 by the coil spring 23 biases the groove side surface of the closed position guide groove 24 </ b> B toward the damper 26. The striker pin 25S is in contact with the groove side surface of the closed position guide groove 24B. The biasing force acting on the groove side surface of the closed position guide groove 24B is converted into the biasing force on the striker pin 25S through contact between the groove side surface of the closed position guide groove 24B and the striker pin 25S. At this time, the urging force against the striker pin 25S acts to push the striker pin 25S toward the end portion on the closed side end face 24SB side in the closed position guide groove 24B.

  On the other hand, as described above, when the ventilation door W is located at the closed position, the ventilation door W is more closed than the closed position, so that the first rotation locking portion 11B and the closing locking wall 12S2 are in contact with each other. The contact and the contact between the elastic cap 15C and the closing locking wall 14S2 are prohibited. As a result, the urging force against the striker pin 25S acts to hold the ventilation door W in the closed position.

  As shown in FIG. 15, when the ventilator door W is opened from the closed position toward the open position by the user's force to open the ventilator door W, the striker pin 25S is first inserted into the groove of the closed position guide groove 24B. The side surface slides toward the open position guide groove 24A, and then enters the closed position guide groove 24B.

  At this time, in the section in which the striker pin 25S moves along the closed position guide groove 24B, the urging force against the striker pin 25S still causes the striker pin 25S to remain at the end on the closed side end face 24SB side in the closed position guide groove 24B. Acts to push towards. On the other hand, when the user who opens the ventilation door W applies a force against such an urging force, the striker pin 25S rotates around the second rotation shaft 25A. Then, as the striker pin 25S moves along the closed position guide groove 24B, the cam 24 receives stress toward the spring support portion 213 from the striker pin 25S and moves backward along the direction away from the center of the striker 25. To do. Thereby, the coil spring 23 shortens the length along the lateral direction and strengthens its urging force.

  It should be noted that the above-described backward movement of the cam 24 and the amplification of the urging force of the coil spring 23 are continued until the striker pin 25S reaches the portion where the closed position guide groove 24B and the open position guide groove 24A are connected. When the backward movement of the cam 24 and the amplification of the urging force are finished, the tip of the coil spring 23 is in a position closer to the spring support portion 213 than the spring closed position 3PC in the lateral direction, and in its moving range. The transition position 3PT, which is the position closest to the spring support portion 213, is reached.

  As a result, the user who opens the ventilation door W receives the urging force with respect to the striker pin 25S as a load for opening, and recognizes the start of opening of the ventilation door W. During this time, the damper 26 moves the damper pin 26P back in accordance with its own restoring force and keeps the damper pin 26P in contact with the contact surface 24P. The damper 26 causes the damper pin 26P to reach a transition position 4PT that is closer to the spring support 213 than the contact closed position 4PC in the lateral direction and closest to the spring support 213.

  As shown in FIG. 16, in the section where the striker pin 25S moves along the open position guide groove 24A, the urging force against the striker pin 25S causes the striker pin 25S to end at the open side end face 24SA side in the open position guide groove 24A. Switch to the force to push towards the part. As the striker pin 25S moves along the open position guide groove 24A, the striker pin 25S rotates around the second rotation shaft 25A, and the ventilation door W advances. At this time, since the rotation of the striker pin 25S is assisted by the urging force amplified by the coil spring 23, the user who opens the ventilation door W is reduced in load for opening the ventilation door W. The

  During this time, the contact surface 24P of the cam 24 moves forward so as to approach the damper 26 from the transition position 4PT, and the damper 26 moves the damper pin 26P forward so that the damper pin 26P contacts the contact surface 24P. Continue to let. As a result, the forward movement of the cam 24, that is, the opening movement of the ventilation door W is braked by the braking force of the damper 26. The user who opens the ventilation door W is reduced in load for opening the ventilation door W, and the ventilation door W reaches the open position at a moderate speed adjusted by the damper 26.

  When the ventilation door W is located at the open position, the striker pin 25S is located at the end on the open side end face 24SA side in the open position guide groove 24A. Further, the damper pin 26P provided in the damper 26 is in contact with the contact surface 24P provided in the cam 24.

  At this time, the biasing force applied to the cam 24 by the coil spring 23 biases the groove side surface of the open position guide groove 24 </ b> A toward the damper 26. The striker pin 25S is in contact with the groove side surface of the open position guide groove 24A. The biasing force acting on the groove side surface of the open position guide groove 24A is converted into the biasing force on the striker pin 25S through contact between the groove side surface of the open position guide groove 24A and the striker pin 25S. At this time, the urging force against the striker pin 25S acts to push the striker pin 25S toward the open side end face 24SA side end portion in the open position guide groove 24A.

  On the other hand, as described above, when the ventilation door W is located at the open position, the ventilation door W is opened more than the open position, the contact between the first rotation locking portion 11B and the opening locking wall 12S1. And it is prohibited by the contact between the elastic cap 15C and the opening locking wall 14S1. As a result, the urging force against the striker pin 25S acts to hold the ventilation door W in the open position.

  When the ventilation door W is closed from the open position toward the closed position by the user's force to close the ventilation door W, the striker pin 25S follows a path opposite to the opening movement. That is, the striker pin 25S first slides on the groove side surface of the open position guide groove 24A, and then enters the close position guide groove 24B.

  At this time, the user who closes the ventilation door W as in the above opening operation first sets the biasing force on the striker pin 25S as a load for the closing operation in the section where the striker pin 25S slides in the open position guide groove 24A. The start of closing of the ventilation door W is recognized. Next, the user who closes the ventilation door W is reduced in the load for closing the ventilation door W in the section where the striker pin 25S slides in the closed position guide groove 24B. The closed position is reached at a moderate speed adjusted by H.26.

  Here, since the length of the closed position guide groove 24B is longer than the length of the open position guide groove 24A, the period during which the damper 26 is braked is longer in the closing movement of the ventilation door W than in the opening movement of the ventilation door W. . Therefore, the interior door D can produce a high-class feeling due to the closing movement of the ventilation door W, and the ventilation door W blocks the ventilation hole H by suppressing the fingers from being caught between the ventilation door W and the unit frame F. Safety at the time is also improved. When the ventilation door W is located at the open position, the abutment surface 24P is located at the abutment open position 4PO that is closer to the transient position 4PT than the abutment closed position 4PC. It is located at the spring open position 3PO closer to the transient position 3PT than the spring closed position 3PC. Therefore, the urging force when the ventilation door W is in the open position is larger than the urging force when the ventilation door W is in the closed position, and the urging force for holding the ventilation door W in the open position is It is larger than the urging force for holding the ventilation door W in the closed position. As a result, the user who closes the ventilation door W can reduce the load received at the beginning of the door operation more than the opening operation.

According to the embodiment, the effects listed below can be obtained.
(1) When the ventilation door W is closed, an urging force for holding the ventilation door W in the closed position and a braking force against the urging force act on the cam 24. As a result of the movement of the cam 24 and the closing movement of the ventilation door W being linked via the striker 25, the closing movement of the ventilation door W is braked. Therefore, it is possible to cause the ventilation door W to reach the closed position at a moderate speed adjusted by the damper 26, and to improve the operability of the ventilation door W.

  (2) Since the lateral direction in which the braking force acts on the cam 24 and the contact surface 24P on which the braking force acts on the cam 24 are orthogonal to each other, the magnitude of the braking force acting on the cam 24 varies. Is suppressed.

  (3) Since the cam 24, the coil spring 23, and the damper 26 are arranged along the lateral direction, which is an example of the extending direction, and the cam 24 is located between the coil spring 23 and the damper 26, the lateral In the width direction orthogonal to the direction, the space occupied by the opening / closing mechanism 20 of the ventilation door is suppressed from increasing. Therefore, in the thickness direction of the interior door D, an increase in the space occupied by the opening / closing mechanism 20 of the ventilation door is suppressed.

  In addition, the extending direction of the bottom surface 24C where the open position guide groove 24A and the closed position guide groove 24B are located and the extending direction of the damper 26 are common extending directions. Therefore, it is possible to design the space occupied by the opening / closing mechanism of the ventilation door in a shape along the extending direction. As a result, it is possible to adopt a shape suitable for arranging the opening / closing mechanism of the ventilation door along one side of the unit frame F in the opening / closing mechanism of the ventilation door.

  (4) While the contact part which the cam 24 has includes the contact surface 24P orthogonal to a horizontal direction, the bottom face 24C which the cam 24 has is located in the bottom face of the cam 24 extended along a horizontal direction. Therefore, the cam 24 can be prevented from expanding along the direction orthogonal to the horizontal direction as compared with the configuration in which the contact surface 24P and the bottom surface 24C are located on one surface orthogonal to the horizontal direction. In particular, if the direction in which the bottom surface of the cam 24 extends and the lateral direction are common, the ventilating door opening / closing mechanism is prevented from expanding in the thickness direction of the interior door D.

  (5) The striker 25, which is one member, has the function of interlocking the movement of the ventilation door W and the movement of the striker 25 and the function of interlocking the movement of the striker 25 and the movement of the cam 24. Therefore, as compared with the configuration in which other members other than the striker 25 perform a part of these functions, the number of members in the ventilating door opening / closing mechanism can be suppressed, and the occupied space accompanying the increase in the number of members Is suppressed in the opening / closing mechanism of the ventilation door.

The above embodiment can be implemented with appropriate modifications as follows.
-The structure which suppresses that the position of a unit frame shifts | deviates toward the front side of a door body or the back side of a door body may have a door body and a unit frame.
For example, as shown in FIG. 17, guide grooves FSG extending along the vertical direction are formed on the outer surface of the first vertical unit frame 131 and the outer surface of the second vertical unit frame 132. The guide member DS faces the unit frame F on each of the side surface DG facing the first vertical unit frame 131 in the first vertical rod D1 and the side surface facing the second vertical unit frame 132 in the second vertical rod D2. Protruding. The guide member DS has a long diameter along the vertical direction, and the short diameter of the guide member DS is substantially equal to the groove width of the guide groove FSG. Both end portions of the guide member DS in the vertical direction are inclined portions DST that are divided into two forks in the thickness direction of the first vertical rod D1, and the inclined portions DST having a bifurcated shape extend along the vertical direction. In the inclined portion DST, the dimension along the horizontal direction is the thickness of the inclined portion DST, and the thickness of the inclined portion DST is thinner as the position is closer to the end in the vertical direction. Further, the surface of the inclined portion DST has a tapered shape having an inclination closer to the side surface DG as the position is closer to the end in the vertical direction.

  When the guide member DS is attached to the vertical groove formed on the side surface DG of the first vertical rod D1, the inclined portion DST is inserted in advance into the vertical groove formed on the side surface DG. Installation proceeds smoothly. Next, when the ventilation unit 10 is inserted toward the gap between the first downspout D1 and the second downspout D2, the guide member DS enters the inside of the guide groove FSG, and the direction in which the ventilation unit 10 moves is The guide groove FSG is restricted in the extending direction, that is, in the vertical direction. Therefore, the load required to align the position of the interior door D and the ventilation unit 10 is reduced when the ventilation unit 10 is attached. Moreover, as shown in FIG. 18, even when the ventilation unit 10 is attached to the interior door D, the guide member DS continues to be positioned inside the guide groove FSG. Therefore, the displacement of the position of the first vertical unit frame 131 with respect to the first vertical rod D1 and the shift of the position of the second vertical unit frame 132 with respect to the second vertical rod D2 are caused by the engagement between the guide member DS and the guide groove FSG. It is suppressed by.

  In particular, as the length of the ventilation unit along the vertical direction is longer, the position of the first vertical unit frame 131 relative to the first vertical wall D1 and the position of the second vertical unit frame 132 relative to the second vertical wall D2 are increased. The gap is large. Therefore, as the ventilation unit 10 becomes longer along the vertical direction, the use of the guide member DS is more effective in suppressing the displacement, and the guide member DS is configured to be intermittently arranged along the vertical direction. Is even more effective.

  A guide groove may be formed on the side surface of the first vertical rod D1 and the side surface of the second vertical rod D2, and guide members may be attached to the first vertical unit frame 131 and the second vertical unit frame 132. .

  The shape of the sliding portion of the cam 24 includes a portion where the striker pin 25S slides when the ventilation door W is opened and a portion where the striker pin 25S slides when the ventilation door is closed. It may be provided separately. For example, the portion where the striker pin 25S slides when the ventilation door is closed includes the above-described open position guide groove 24A and the closed position guide groove 24B. On the other hand, the portion where the striker pin 25S slides when the ventilation door W is opened connects the end portion of the open position guide groove 24A and the end portion of the closed position guide groove 24B, and the striker pin 25S rotates. It may have a curved shape along the trajectory. Even with such a configuration, effects similar to the above (1) to (4) can be obtained when the ventilation door W is closed. Further, when the ventilation door W is opened, the movement of the cam 24 is suppressed, so that the braking of the ventilation door W is released and a substantially constant urging force is applied to the cam 24.

  The position where the urging member and the case accommodating the braking member are attached is not limited to the second horizontal unit frame 15 but may be a door body. Further, the urging member, the cam, and the braking member may be accommodated in the accommodating space 15V of the second lateral unit frame 15, and the case may be omitted.

  The striker pin 25S and the second rotation shaft 25A may have shapes extending along different directions. For example, the second rotating shaft 25A may have a shape extending along the vertical direction, while the striker pin 25S may have a shape extending along a direction orthogonal to the vertical direction.

  At this time, the sliding portion provided in the cam has a shape for converting the biasing force received by the cam into a direction in which the striker pin 25S rotates and holds the ventilation door in the open position and the closed position. If you do.

  In the striker 25, the main body portion of the striker 25 and the second rotation shaft 25A may be different members, and the second rotation shaft 25A may be screwed to the main body portion of the striker 25.

  The biasing member provided in the opening / closing mechanism 20 of the ventilation door is not limited to the coil spring 23 but may be a leaf spring or a torsion spring. In short, the biasing member only needs to have a function of applying a biasing force to the cam to hold the ventilation door in the open position and the closed position.

  The braking member provided in the opening / closing mechanism 20 of the ventilation door is not limited to a cylinder damper such as an oil damper or an air damper, but may be a rotary damper. In short, the braking member only needs to have a function of applying a resistance force to the cam that is substantially proportional to the speed of the cam that moves according to the biasing force.

  The opening lock wall 12S1 may be omitted from the first door cap 12, and the closing lock wall 12S2 may be omitted from the first door cap 12. Further, the first rotation locking portion 11B may be omitted from the first horizontal unit frame 11.

  -The opening locking wall 14S1 may be omitted from the second door cap 14, or the closing locking wall 14S2 may be omitted from the second door cap 14. Further, the second rotation locking portion 15B may be omitted from the second horizontal unit frame 15.

The ventilation door opening / closing mechanism 20 may be provided at both ends of the ventilation door W in the vertical direction. At this time, the second horizontal unit frame 15 is employed instead of the first horizontal unit frame 11.
The shape of the unit frame F and the door frame FG is not limited to the rectangular frame shape, and may be, for example, a circular frame shape or an elliptical frame shape.
The partition plate G may be a daylighting plate that transmits light, a light blocking plate that blocks light transmission, or a reflection plate that reflects light. .
-The number of the ventilation units 10 with which the interior door D is provided may be one, and may be two or more.

The ventilation unit 10 provided in the interior door D is not limited to a shape extending along the vertical direction, but may have a shape extending along the horizontal direction. Further, the vertical direction in the ventilation unit may be a vertical direction or a horizontal direction.
-The door body provided with the opening / closing mechanism of the ventilation door is not limited to the interior door but may be an exterior door, and is not limited to a swing door but may be a sliding door or a folding door.

  D ... Interior door, F ... Unit frame, G ... Partition plate, H ... Ventilation hole, W ... Ventilation door, D1 ... First vertical fence, D2 ... Second vertical fence, F1 ... First door vertical frame, F2 ... First 2 door vertical frame, FG ... door frame, 10 ... ventilation unit, 11 ... first horizontal unit frame, 11A ... first rotation shaft, 11B ... first rotation locking portion, 11P ... first shaft support plate portion, 11S ... 1st shaft support surface, 12 ... 1st door cap, 12A, 14A ... Shaft support cylinder part, 12F, 14F ... Connection cylinder part, 12G, 14G ... Shaft support piece, 12H, 14H ... Shaft support hole, 12P, 14P ... Cover plate part, 12S1, 14S1 ... Opening locking wall, 12S2, 14S2 ... Closing locking wall, 14 ... Second door cap, 15 ... Second lateral unit frame, 15B ... Second rotation locking part, 15C ... Elasticity Cap, 15F ... exterior plate, 15H ... shaft insertion hole, 15P ... second Support plate part, 15V ... accommodating space, 15S ... second shaft support surface, 20 ... ventilation door opening / closing mechanism, 21 ... case, 22 ... cover, 23 ... coil spring, 24 ... cam, 24A ... open position guide groove, 24B ... closed position guide groove, 24C ... bottom surface, 24H ... holding portion, 24P ... contact surface, 24SA ... open side end face, 24B ... closed side end face, 25 ... striker, 25A ... second rotating shaft, 25B ... guide pin, 25S ... striker pin, 26 ... damper, 26P ... damper pin, 131 ... first vertical unit frame, 132 ... second vertical unit frame, 213 ... spring support, 214 ... cam guide rib, 215A ... shaft insertion hole, 215B ... guide hole 216: Damper locking claw.

Claims (6)

In the opening and closing mechanism of the ventilation door with a ventilation function provided in the door body,
A striker interlocking with the opening and closing of the ventilation door;
A sliding portion on which the striker slides, a holding portion that holds the biasing member, and a contact portion that comes into contact with the braking member, and a cam that interlocks with the movement of the striker;
The biasing member for applying a biasing force to the cam to hold the ventilation door in an open position and a closed position;
The braking member that applies a braking force against the biasing force against the urging force when the ventilation door is at least closed.
A ventilating door opening and closing mechanism characterized by comprising: The braking member has a shape extending along the extending direction and applies the braking force along the extending direction;
The opening / closing mechanism of the ventilation door according to claim 1, wherein the contact portion includes a surface along a direction orthogonal to the extending direction. The cam, the biasing member, and the braking member are arranged along an extending direction that is a direction in which the braking member extends,
The ventilation door opening / closing mechanism according to claim 1, wherein the cam is positioned between the biasing member and the braking member. The opening / closing mechanism for a ventilation door according to any one of claims 1 to 3, wherein the sliding portion is located on a bottom surface of the cam extending along an extending direction that is an extending direction of the braking member. The striker includes a rotation shaft of the ventilation door and a striker pin extending in a direction opposite to a direction in which the rotation shaft extends, and the striker pin slides on the sliding portion. The opening / closing mechanism of the ventilation door as described in one. A case for accommodating the cam, the biasing member, and the braking member;
The ventilation door opening / closing mechanism according to any one of claims 1 to 5, wherein the case is detachably attached to a frame that supports the ventilation door.

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