JP2018048544A - Flap door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flap door with a simple structure that can be attached easily and that can reduce a space created at the upper part when a door is closed.SOLUTION: A flap door comprises a tabular door body 2, a slider 4 fixed to both ends on the inner side of the door body 2, and a slide rail 3 fixed to both side wall surfaces in a storage part 9 for furniture and others. An abutting part 31 is projected in the end on the slide rail 3, and the abutting part 31 is provided with a flap-like sliding surface 32 and an abutting end part 33. At opening, the door body 2 is inserted in the upper part in the storage part 9, and at closing, the slider 4 is slid forward on a rail sliding surface 30 of the slide rail 3 and is rotated to the lower side so that the storage part 9 is closed by the door body 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a flap door that opens and closes a front opening of a storage unit for furniture, and particularly relates to a flap door having a structure in which the door is stored inside a top plate of the storage unit when opened.

  As a door that opens and closes the front opening of a storage unit for furniture, a flap door is conventionally known from Patent Document 1 below. This flap door is mounted so that it slides back and forth on the upper side of the storage part, and with the door pulled out, the door is rotated downward via the damper shaft to close and open the front opening of the storage part In order to do so, the door is turned to the front with the damper shaft as a fulcrum, and the door is slid into the space above the top plate of the storage unit and opened in a substantially horizontal state.

Utility model registration No. 2569594

  However, in this flap door, the slide rail is fixed to both sides of the door, the damper support part provided with the damper shaft is fixed to the cabinet side, the inner rail of the slide rail is fixed to the damper support part, and the damper It has been necessary to slidably engage the inner rail of the support portion with the inner side of the slide rail. For this reason, the structure of the slide mechanism and the rotation mechanism is complicated, and the mounting work thereof is complicated, so that there is a problem that a general user cannot easily mount it.

  In addition, the flap door has a structure in which when the door is opened, the door is inserted above the top plate of the storage unit, so in the furniture storage unit, a space for inserting the door above the top plate is required. When there is no insertion space for the door, there is a problem that this type of flap door cannot be used.

  On the other hand, as a flap door that opens and closes a storage unit such as a bookshelf or a library, conventionally, as shown in FIG. 24, rails 52 having horizontal sliding grooves are horizontally fixed on the inner side surfaces of both side walls of the cabinet 50 to open the door. A flap door is known in which the shaft pin member 53 is fixed to both end portions of the inner surface of the door 51 in a state where the shaft pins 54 protrude from both side portions of the door 51. In this flap door, the door 51 is inserted into the upper end position in the cabinet 50 to open the door 51. When the door 51 is closed, the door 51 is pulled out to the front, and the shaft pin 54 is used as a fulcrum at the drawer end. The door is pivoted downward to be used so as to close the front opening of the storage portion of the cabinet 50.

  However, this flap door has a simple structure and can be used relatively easily. However, when the door 51 is closed, as shown in FIG. 24, the door 51 rotates about the shaft pin 54 as a fulcrum. The maximum turning radius R is inevitably the radius from the center point of the shaft pin 54 to the corner of the upper edge (in the thickness direction) of the door 51. For this reason, the fixing position of the rail 52 is set so that the upper edge (corner) in the thickness direction of the door 51 does not contact the inner surface of the top plate of the cabinet 50 when rotating, and the rail 52 is located on the inner side of both side walls. The flap pin is used by fixing the shaft pin member 53 to the inside of the door 51.

  However, as shown in FIG. 24, when the flap 51 is pulled out and rotated downward, and the front opening of the cabinet 50 is closed by the door in the vertical position, the upper end of the door 51 and the cabinet 50 are closed. There is a problem that the gap C2 is considerably large between the inner surface of the top plate.

  An object of the present invention is to solve the above-described problems, and to provide a flap door that has a simple structure, can be easily attached, and can reduce a gap generated at the top when the door is closed. And

The flap door according to the present invention is
A plate-like door body, a slider fixed to both inner ends of the door body, and slide rails fixed to both side walls in the storage portion, and when opened, the door body is located at an upper portion in the storage portion. In the flap door that is inserted and closed when the door is closed, the slider or the door body is pivoted downward while sliding forward on the sliding surface of the slide rail to close the storage portion.
A lifting latching portion protrudes from the front portion of the slider, and an inclined tilting surface is provided on the upper surface of the lifting latching portion, and an arcuate concave surface is provided at an intermediate portion of the lifting slope surface. And
At the front end of the slide rail, a contact portion projects upward from the rail sliding surface, and a chevron sliding surface on which the inner side surface of the door main body slides is provided on the corresponding contact portion. The side wall is bent so that the curved wall protrudes,
An entrance space into which the lifting lock of the slider can enter is provided inside the curved wall, and the upper end of the bent wall is in contact with the lifting lock of the slider when closed. A holding upper end for lifting the slider is provided,
When the door is closed, at the final stage, the arcuate concave surface and the lifting inclined surface of the lifting locking portion of the slider are sequentially brought into sliding contact with the holding upper end portion, and the slider is lifted. To do.

  According to the flap door of the present invention, when the door body is pulled out of the storage portion and the storage portion of the cabinet or the like is closed, the door body is not rotated and closed around the shaft pin as in the prior art, The inner side surface of the door body turns to the side that closes the mountain-shaped sliding part of the abutting part of the slide rail end as a fulcrum, and then the upper end part abuts against the arcuate concave surface of the lifting locking part of the slider, When the door body pivots from top to bottom and closes the door, the flap body is closed by rotating the slider and the door body by the action of the curved wall on the slide rail side. The gap on the upper side of can be minimized.

  Furthermore, the number of parts of the flap door can be composed of only one pair of slide rails and one pair of sliders, and all these parts can be molded from synthetic resin, so it is very easy and inexpensive. Can be manufactured. Moreover, even if a general user uses this flap door, it is very easy to assemble the flap door into a cabinet or other storage section simply by fixing the slide rail and slider in place with a fixing screw. Can do.

  Here, the slide rail is formed in a symmetric shape having a center line perpendicularly passing through the center position in the longitudinal direction as a symmetric axis, and the pair of slide rails fixed to both side walls in the storage portion have the same shape. It can be set as the structure formed in this. The slider is formed in a symmetric shape having a center line passing through the center position of the front surface as a symmetric axis, and a pair of sliders fixed to both inner ends of the door body are formed in the same shape. Can be configured.

  According to this, a pair of slide rails and a pair of sliders can each be formed into the same shape and inexpensively using the same molding die, and a general user can easily and without difference between right and left, Slide rails and sliders can be attached to cabinets.

  Here, it is preferable that the contact portion of the slide rail is provided with an inclined surface that is inclined at an acute angle from the rail sliding surface at a portion continuing from the contact end portion to the rail sliding surface. According to this, when pulling out the door body to the front when opened, even if the contact surface of the slider is strongly contacted with the contact end, the slider is stably stopped, and the door body comes off due to rebounding of the slider, etc. Can be prevented.

  Here, it is preferable to provide a locking tip portion bent in a hook shape at the tip of the lifting locking portion. According to this, when the door body is closed, the locking tip of the lifting locking portion of the slider is locked to the holding upper end portion of the curved wall portion of the abutting portion at the slide rail end portion, or the locking As a result, it is possible to prevent the door body from coming off at the time of closing.

  Here, on the inner side surface of the slide rail, there is formed a rail side sliding surface on which the side surface of the slider can slide, and the slider slides along the rail side sliding surface when the door is opened and closed. Or it can be set as the structure which moves in the state which can be slidably contacted. In addition, the slide body of the slider is formed in a substantially rectangular parallelepiped shape, the lifting locking portion projects from the front portion of the body, and the slide rail has a side surface of the sliding body and the lifting locking portion. A side sliding surface capable of sliding contact with the sliding side surface can be formed.

  According to this, the shape of the slider can be reduced in size and simplified, and the slide rail can also be reduced in size with a simple structure, and the space of the storage part such as the cabinet can be widely used. In addition, the manufacturing cost can be reduced.

  Also, here, a rail side sliding surface is formed on the inner side surface of the slide rail so that the side surface of the slider can be slidably contacted. When the door is opened and closed, the slider slides along the rail side sliding surface. It can comprise so that it may move in the state which can contact or slidably contact.

  Further, here, the pair of slide rails fixed to the both side wall surfaces in the storage portion is provided with a chevron support contact portion as the contact portion only at the front end, and symmetrically passes through the center of the storage portion space vertically. The pair of slide rails may be formed in a plane symmetrical shape as a plane.

  Further, here, in the flap door, the contact portion is provided only at the front end of the slide rail, and when the door body is inserted into the storage portion so as to open the storage portion, the end of the door body The stopper with which the part abuts can be configured to be provided on the side wall part in the storage part. According to this, the shape of a slide rail can be simplified and a flap door can be used for a cabinet etc. which have a storage part of various sizes.

  According to the flap door of the present invention, the mounting operation can be easily performed with a simple structure, and the gap generated in the upper part when the door is closed can be reduced.

It is a disassembled perspective view of the whole structure of the flap door which shows 1st Embodiment of this invention. It is sectional drawing of the same flap door with which it installed in the cabinet. (A) is an enlarged front view of a slide rail, (b) is a right side view of the slide rail. (A) is a top view of a slide rail, (b) is a left view of the slide rail. (A) is the perspective view seen from the diagonal right side of the slide rail, (b) is the perspective view seen from the diagonal left side. (A) is a front view of the slider, (b) is a right side view of the slider. (A) is a top view of a slider, (b) is a bottom view of the slider. (A) is the perspective view seen from the bottom face side of a slider, (b) is the perspective view seen from the plane side of the slider. It is a section explanatory view at the time of closing a slap door. It is a section explanatory view at the time of closing a slap door. It is a section explanatory view at the time of closing a slap door. It is detailed sectional explanatory drawing at the time of closing a slap door. It is a whole structure perspective view of the flap door of a 2nd embodiment. It is a top view of the flap door. It is sectional drawing of the same flap door with which it installed in the cabinet. (A) and (b) are perspective views of the slide rail of the left side of the flap door. (A) is a front view of a right slide rail, right side views (b) and (c) thereof are left side views, (d) is a plan view thereof, (e) is a bottom view thereof, and (f) is a bottom view thereof. It is a rear view. (A) and (b) are perspective views of the slider of the flap door. (A) is a front view of the slider, (b) is a left side view thereof, (c) is a plan view thereof, and (d) is a sectional view thereof. It is sectional drawing at the time of showing the usage condition of the flap door, pulling out a door main body, and closing a cabinet. It is sectional drawing at the time of closing the cabinet. It is sectional drawing at the time of closing the cabinet. It is detailed sectional explanatory drawing at the time of closing the cabinet. It is sectional explanatory drawing at the time of closing the conventional flap door.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIGS. 1-12 has shown the flap door of 1st Embodiment. As shown in FIGS. 1 and 2, the flap door includes a plate-like door body 2 that closes a storage portion 9 of a cabinet 8 such as furniture, and a pair of sliders 4 that are fixed to both inner ends of the door body 2. And a pair of slide rails 3 fixed to horizontal positions on both side wall surfaces in the storage unit 9.

  When the flap door that opens and closes the storage portion 9 of the cabinet 8 is opened, the door body 2 is inserted into the upper space in the storage portion 9, and when it is closed, the slider 4 attached to both inner ends is attached to the rail slide of the slide rail 3. The storage unit 9 is closed by sliding it forward on the moving surface 30 and rotating it downward at its drawer end. When the door body 2 is rotated downward at the drawer end, it does not rotate around the shaft pin as in the prior art, but the slider 4 and the slide rail 3 cooperate to shift the door body 2 back and forth. Further, as shown in FIG. 2, the gap C <b> 1 generated between the top plate of the cabinet 8 and the upper end of the door body 2 is minimized when closed.

  That is, as shown in FIGS. 3 to 5, the slide rail 3 has a rail sliding surface 30 on the upper surface, is formed in a long and narrow shape, and contact portions 31 are formed at both ends of the slide rail 3. It is formed to protrude upward from the rail sliding surface 30. As shown in FIG. 3, the slide rail 3 is formed in a symmetric shape having a center line S1 passing through a central position in the longitudinal direction as a symmetric axis, that is, the slide rail 3 is formed in a symmetric shape in a side view, The pair of slide rails 3 fixed to the left and right wall surfaces in the storage portion 9 have the same shape.

  As a result, when the slide rail 3 is molded by synthetic resin molding at the time of manufacturing, the slide rails 3 on both sides can be molded with the same molding die, so that the manufacturing cost can be reduced. Further, when the slide rail 3 is attached to the left and right side walls in the cabinet 8, the attachment work can be easily performed without considering the directionality of the slide rail 3, the left and right sides, and the like.

  As a function of the slide rail for the flap door, it is only necessary to provide the contact portion 31 and the curved wall portion 34 only at the front portion of the rail. The wall 34 may have a simple stopper shape. As described above, the slide rail 3 of the present embodiment is provided with the abutment portion 31 and the curved wall portion 34 symmetrically at both ends of the rail so that the slide rails on both side wall surfaces can be used in common. Moreover, the contact part 31 and the curved wall part 34 which were provided in the both ends of the rail are formed in the symmetrical form about the centerline S1 as an axis of symmetry, and are the same structure. For this reason, the same code | symbol is attached | subjected to the member of both sides, and only one contact part 31 and the curved wall part 34 are demonstrated, and description of the other is abbreviate | omitted.

  As shown in FIGS. 4 and 5, the abutting portion 31 at the front end of the slide rail 3 protrudes upward from the rail sliding surface 30, and the inner surface of the door body 2 is in sliding contact with the abutting portion 31. A mountain-shaped sliding surface 32 formed in a mountain shape is provided. A contact end portion 33 that contacts the contact surface 42 of the slider 4 is formed in a corner shape having an arcuate curved surface at the inner end of the contact portion 31. As shown in FIG. 3, a fixing hole 38 is provided through the contact portion 31 of the slide rail 3 in the horizontal direction. When the door main body 2 is opened, the chevron-shaped sliding surface 32 on the contact portion 31 is inserted into the upper space of the storage portion 9 while being rotated upward, and the contact surface 42 and the inclined sliding surface 48 of the slider 4. Is formed so as to smoothly rotate and slide while sliding on the mountain-shaped sliding surface 32.

  Further, as shown in FIG. 4, the abutting portion 31 on the slide rail 3 protrudes at a position biased to one side edge portion side, and thereby, the slider 4 is provided on the side portion of the abutting portion 31. An entry space 39 is formed. The sliding surface from the rail sliding surface 30 is extended as it is on the bottom surface of the entry space 39, and when the door body 2 is pulled out, the lifting and locking portion 43 of the slider 4 extends from the rail sliding surface 30 to the entry space 39. It can enter smoothly.

  At the end of the slide rail 3, the curved wall 34 is erected outside the entry space 39 so as to cover the outside of the entry space 39 and with the tip slightly inclined inward. The outer surface of the curved wall portion 34 is formed so as to be integrated with the outer surface of the contact portion 31. At the upper end of the curved wall portion 34, a holding upper end portion 35 is formed in a square shape, and the upper corner portion of the holding upper end portion 35 is continuous with the corner portion of the end portion of the mountain-shaped sliding surface 32 of the contact portion 31 in a straight line. To be formed. And as shown in FIG. 9 etc., the 1st inclined surface 36 is formed in the direct outer side of the holding | maintenance upper end part 35, and the 2nd inclination is provided in the lower side of the 1st inclined surface 36 via the obtuse curved surface. A surface 37 is formed.

  Accordingly, as shown in FIG. 9, when the door body 2 is pulled out from the upper position in the storage portion 9, the inner surface of the door body 2 is in sliding contact with the mountain-shaped sliding surface 32 of the abutting portion 31, and forwards. Moving. Thereafter, the lifting and locking portion 43 of the slider 4 enters the entry space 39, and the inclined contact surface 42 of the slider 4 comes into contact with the contact end portion 33 of the contact portion 31.

  Further, as shown in FIGS. 3 to 5, the rail sliding surface 30 is provided on the inner side surface of the contact portion 31, that is, on the portion following the rail sliding surface 30 on the lower side from the contact end portion 33 of the contact portion 31. An inclined surface 31a that is inclined at an acute angle is formed, and the abutting end portion 33 is formed in an acute angle shape in a side view and has an arcuate curved surface. Further, the contact surface 42 of the slider 4 is formed vertically, and the upper side of the contact surface 42 is formed as an inclined sliding surface 48 so as to be inclined upward. Thereby, when the door body 2 is pulled out when the door is opened, after the contact surface 42 of the slider 4 hits the contact portion 31, the door body 2 rotates downward and the contact end portion 33 The inclined sliding surface 48 is in good sliding contact with the arcuate curved surface, and the door body 2 rotates in the closing direction.

  Further, as shown in FIG. 9, the inclined surface 31 a of the contact portion 31 of the slide rail 3 is in contact with the contact surface 42 of the slider 4 even when the door body 2 is pulled out and the front side is lifted slightly. The contact end 33 of the portion 31 can be rotated in good contact with the arcuate curved surface. Then, as shown in FIG. 10, when the door body 2 is turned downward to close the door body 2, the inner surface of the door body 2 comes into contact with the holding upper end portion 35, and the holding upper end portion 35 is used as a fulcrum as it is. Rotating downward, the inner surface of the door body 2 comes into contact with the first inclined surface 36.

  At this time, as shown in FIG. 10, the contact surface 42 of the slider 4 on the door body 2 side slides the contact end 33 upward, and the door body 2 rotates in the closing direction. As shown in FIGS. 10 and 11, a second inclined surface 37 is formed on the curved wall portion 34 of the abutting end portion 33 on the lower side of the first inclined surface 36 via an obtuse angle portion. Is done. Thereby, when the door body 2 is turned downward when the door body 2 is closed, the inner side surface of the door body 2 is an obtuse corner from the first inclined surface 36 in the latter half portion as shown in FIG. It contacts with the 2nd inclined surface 37 via.

  The pair of sliders 4 fixed to the inner end portions of the door body 2 are formed in the same shape, and have a rectangular parallelepiped sliding portion body 40 as shown in FIGS. On the front side of 40, a lifting and locking portion 43 having a width smaller than the lateral width of the sliding portion main body 40 is provided so as to project.

  As shown in FIG. 6A, the slider 4 is formed in a bilaterally symmetric shape with a center line S2 passing through the center position of the front surface as a vertical axis. And a pair of slider 4 fixed to the inner both ends of the door main body 2 is the same shape. As a result, when the slider 4 is formed by molding a synthetic resin during manufacturing, the slider 4 on both sides can be formed with the same mold, thereby reducing the manufacturing cost. Further, when the slider 4 is attached to both sides of the inner side of the door body 2, the attachment work can be easily performed without considering the left and right.

  The slider can also be formed in a left-right asymmetric shape. That is, in the slider 4 of the present embodiment, the contact surface 42 and the inclined sliding surface 48 are arranged on both sides of the lifting and locking portion 43 on the front surface of the sliding portion main body 40. Since the contact surface 42 that actually contacts the contact end portion 33 is only on one side, the slider 4 is not symmetrical, and the contact surface 42 and the inclined sliding surface 48 are provided only on one side. It does not matter if it is formed.

  A first sliding surface 41 that is in sliding contact with the rail sliding surface 30 of the slide rail 3 is provided on the lower surface of the sliding portion main body 40. As shown in FIG. 8 (b), the upper surface of the sliding portion main body 40 is an attachment surface to the door main body 2, and a positioning portion 49 protrudes upward from the front portion of the upper attachment surface. Thereby, when attaching the slider 4 to the inner side inner surface (both sides) of the door body 2, as shown in FIG. 6 (b), the positioning unit 49 is brought into contact with the inner corner of the door body 2 and fixed. If a fixing screw is inserted into the hole 47 and fixed, the slider 4 can be easily attached at a predetermined position. The fixing hole 47 is provided in the central part of the sliding part main body 40 so as to penetrate vertically.

  Further, a contact surface 42 is provided on the front side of the sliding part main body 40, that is, on the front side perpendicular to the first sliding surface 41, and is held at the center of the contact surface 42, that is, on the front surface of the sliding part main body 40. An upper locking portion 43 is projected. The lifting lock 43 is formed to protrude forward in a rectangular shape in plan view and in a substantially right triangle shape in side view. When the door main body 2 is closed, when the door main body 2 is pulled out from the upper portion of the storage portion 9, the lifting and locking portion 43 abuts while sliding on the rail sliding surface 30 as shown in FIG. 9. The structure has a structure in which it enters the side entry space 39 on the side of the part 31 and the contact surface 42 on the left side or the right side of the lifting lock part 43 hits the contact end part 33 of the contact part 31.

  An inclined lifting inclined surface 45 is provided on the upper surface of the lifting locking portion 43, and an arcuate concave surface 44 is provided at an intermediate portion of the lifting inclined surface 45. As shown in FIG. 11, when the door body 2 is closed, the upper end 35 of the curved wall 34 of the slide rail 3 comes into contact with the upper inclined surface 45 of the upper locking portion 43 at the final stage. Finally, when the holding upper end 35 moves from the arcuate concave surface 44 to the lifting inclined surface 45, the lifting locking portion 43 receives a lifting force from the holding upper end 35, and the slider 4 moves to the door. It is configured to be lifted together with the main body 2.

  Furthermore, the tip end portion of the lifting lock portion 43 is bent upward to form a hook shape, and the lock tip portion 46 is formed at the tip end. When the door body 2 is closed, as shown in FIG. 11, the locking tip portion 46 of the locking locking portion 43 of the slider 4 is held by the curved wall portion 34 on the slide rail 3 side. The upper end 35 is locked or can be locked. Thereby, it is possible to prevent the door body 2 from coming off at the time of closing.

  The flap door having the above-described configuration is used by being attached to the storage unit 9 of the cabinet 8 such as a bookshelf or a library. As shown in FIG. 2, the slide rail 3 is horizontally disposed on the upper sides of the left and right inner wall portions with the rail sliding surfaces 30 facing upward in the storage portion 9 of the cabinet 8, and fixed on the front and rear sides. A fixing screw is inserted into the hole 38 to be fixed. Since the slide rails 3 fixed on both sides of the left and right inner wall portions have the same shape, they can be easily fixed without confirming the left and right.

  As shown in FIG. 1, the slider 4 has the lifting and locking portions 43 facing forward and the positioning portion 49 at the rear end of the door body 2 on both sides of the inner rear end (back) of the door body 2. It can be mounted against. The attachment is performed by inserting a fixing screw into the fixing hole 47 and fixing it at a fixed position on the inner rear end of the door body 2. Since the sliders 4 attached to the left and right sides of the inner surface of the door body 2 have the same shape, they can be easily fixed without confirming whether they are left or right.

  As described above, the pair of slide rails 3 and the pair of sliders 4 can be easily attached, and even when the user who purchased the cabinet attaches the flap door himself, it can be easily attached.

  When the door body 2 with the slider 4 fixed to both sides of the inner rear end (back) is assembled to the storage portion 9 of the cabinet 8, the rear end portion of the door body 2 is inserted into the upper position in the storage portion 9. Insert into. At this time, the sliders 4 on both sides of the inner rear end are inserted so as to ride on the rail sliding surface 30 of the slide rail 3.

  By this operation, as shown in FIG. 2, the door body 2 is in a state in which the sliders 4 on both inner sides thereof are slid on the rail sliding surface 30 of the slide rail 3 and can slide back and forth. The inner surface of the portion is placed on the mountain-shaped sliding surface 32 of the abutting portion 31 of the slide rail 3, and the door body 2 is held in a state in which the inner portion is slightly inclined and slidable back and forth. .

  As shown in FIG. 2, when the door body 2 is inserted into the upper portion of the storage portion 9 is an open state, from this state, when the storage portion 9 is closed by the door body 2, first, the door body 2 is moved forward. Pull out. At this time, the first sliding surface 41 of the slider 4 slides on the rail sliding surface 30 of the slide rail 3, and both inner side surfaces of the door body 2 are ridges of the contact portions 31 of the slide rails 3 on both sides. It slides on the sliding surface 32 and can be pulled out smoothly. At this time, the front part of the door body 2 may be pulled out by slightly lifting it.

  Next, as shown in FIG. 9, the contact surfaces 42 of the sliders 4 on both sides come into contact with the contact end portion 33 of the contact portion 31 of the slide rail 3 at the drawer end of the door body 2. At this time, as shown in FIG. 10, the front part of the door body 2 is pushed slightly downward to rotate downward. As shown in FIG. 10, the door body 2 rotates so as to raise the slider 4 upward with the holding upper end 35 at the tip of the curved wall 34 of the contact portion 31 as a fulcrum.

  At this time, the slider 4 rotates while sliding the inclined sliding surface 48 from the contact surface 42 to the contact end portion 33 of the contact portion 31. As shown in FIG. 10, the inner side surface of the door body 2 is in contact with the first inclined surface 36 of the contact portion 31. In this state, the door body 2 has an inclination angle of about 45 degrees with respect to the opening of the storage unit 9 and is closed to about half.

  When the door body 2 is further rotated downward, the inner surface of the door body 2 rotates while sliding downward on the first inclined surface 36 of the contact portion 31 as shown in FIG. Then, the holding upper end portion 35 of the contact portion 31 comes into contact with the arcuate concave surface 44 of the lifting lock portion 43 of the slider 4.

  As described above, when the door body 2 is pivoted downward and closed, the door body does not pivot around the shaft pin as in the prior art, but the action of the contact portion 31 between the slider 4 and the slide rail 3. Thus, since the door body 2 rotates while sliding downward, the required upper space in the storage unit 9, that is, the rotation height width of the door body 2 can be reduced.

  At this time, the inner side surface of the door main body 2 has a point B on the corner between the first inclined surface 36 and the second inclined surface 37 of the curved wall portion 34 (the point B in FIG. 11). It is in a state of being placed on a line extending in the thickness direction of the paper surface). Further, at this time, the curved wall portion 34 is sandwiched between the inner side surface of the door main body 2 and the arcuate concave surface 44 of the lifting and locking portion 43 of the slider 4 and has a door stop. Is retained.

  When the door body 2 is rotated so as to completely close the door body 2 as shown from the upper side to the lower side of FIG. 11, the door body 2 has the first inclined surface 36 and the first inclined surface 36 as shown in FIG. A moment having a fulcrum B on the corner between the two inclined surfaces 37 acts. At this time, the bent wall portion 34 is sandwiched between the inner side surface of the door body 2 and the arcuate concave surface 44 of the lifting and locking portion 43 of the slider 4, and the upper end portion of the bent wall portion 34 at the tip end. 35 and the arcuate concave surface 44 of the lifting lock 43 of the slider 4 are in contact with each other at the contact point D.

  For this reason, as shown in FIG. 12, when the door main body 2 is pushed in the closing direction with a closing force F0, the holding upper end 35 (contact point D) at the distal end of the curved wall 34 is determined from the moment around the fulcrum B. The pressing force F <b> 1 is received from the arcuate concave surface 44 of the upper locking portion 43 of the slider 4. As a result, the contact point D of the arcuate concave surface 44 receives, as its reaction force, a lifting force F3, which is a component in the vertical direction of the pressing force F1, from the holding upper end 35.

  For this reason, when the door body 2 is turned to the closed side, the upper end 35 of the bent wall 34 at the tip of the bent wall 34 is lifted downward from the arcuate concave surface 44 as shown in FIGS. The arcuate concave surface 44 of the lifting latching portion 43 is rotated upward so as to be in sliding contact with the surface 45, and the lifting latching portion 43 of the slider 4 is lifted as shown from the upper side to the lower side of FIG. As a result, the door body 2 rises together with the slider 4, and the gap C1 between the upper end portion of the door body 2 and the top plate of the storage portion 9 at the time of closing is in a minimum state as shown in the lower side of FIG. Further, at this time, the contact point of the holding upper end portion 35 shifts from the arcuate concave surface 44 to the lifting inclined surface 45 to get over the corner portion, and the door body 2 is in a stable state.

  In the closed state, as shown in the lower side of FIG. 11, the holding upper end portion 35 abuts on the lifting inclined surface 45, and in this state, the load due to the weight of the door body 2 is held from the contacting portion of the lifting inclined surface 45. The upper end portion 35 is applied. For this reason, the closed state of the door main body 2 shown in the lower side of FIG. 11 is maintained by the frictional resistance of the contact portion.

  Thus, when the door body 2 is closed, the door body 2 is not rotated and closed about the axis center of the shaft pin or the like, but the slider 4 of the door body 2 sliding on the slide rail 3 is slid. After abutting on the abutting portion 31 of the rail end, the arcuate concave surface 44 and the lifting inclined surface 45 of the lifting and locking portion 43 of the slider 4 and the holding upper end portion 35 of the curved wall portion 34 on the slide rail 3 side. Due to the action, the slider 4 is pivoted so as to be lifted, and the flap door is closed. Therefore, the gap on the upper side of the door body 2 in the closed state can be minimized.

  When the door body 2 is closed, the state shown in the lower side of FIG. 11 is obtained. At this time, the locking tip 46 of the lifting locking portion 43 of the slider 4 is held by the curved wall portion 34 on the slide rail 3 side. Since it is locked to the upper end 35 or is in a lockable state, the door body 2 will not be inadvertently detached.

  On the other hand, when the door body 2 in the closed state is opened, the door body 2 is rotated so that the lower portion of the door body 2 is pulled forward. At this time, the door main body 2 rotates in the clockwise direction of FIG. 11 around the fulcrum B on the inner surface thereof, and is in the state shown in the upper diagram of FIG.

  Further, when the door main body 2 rotates, the contact position of the inner surface of the door main body 2 is held from the first inclined surface 36 of the contact portion 31 of the slide rail 3 as shown in the lower diagram of FIG. Moving to the upper end portion 35, the inclined sliding surface 48 of the slider 4 comes into contact with the top of the mountain-shaped sliding surface 32 of the contact portion 31.

  Further, when the door body 2 rotates upward, the contact portion on the mountain-shaped sliding surface 32 smoothly transitions from the inclined sliding surface 48 of the slider 4 to the inner surface of the door body 2. At this time, the door body 2 rotates in the opening direction while being supported on the mountain-shaped sliding surface 32 of the contact portion 31, so that the slider 4 does not hit the slide rail 3 strongly with the rotation, Problems such as the occurrence of hitting sounds are prevented. The door body 2 is supported on the mountain-shaped sliding surface 32 of the abutting portion 31 and is in a substantially horizontal state. In this state, when the door body 2 is inserted into the upper portion of the storage portion 9, the sliders 4 on both sides slide. It slides on the rail 3, and it will be in an open state as shown in FIG.

  FIGS. 13-23 has shown the flap door of 2nd Embodiment. The flap door has a structure in which the slider 7 fixed to the door body 2 and the slide rail 6 fixed to the side wall of the storage portion 9 are both miniaturized and simplified. When closing the door body 2 of the flap door, the slider 7 on the door body 2 side contacts the mountain-shaped support contact portion 61 of the slide rail 6 and then bends with the lifting and locking portion 73 of the slider 7 as described above. By the action of the wall portion 64, the slider 7 is rotated so as to be lifted, the door body 2 is lifted, and the upper gap is minimized.

  As shown in FIG. 13 and FIG. 14, the pair of left and right slide rails 6 are surfaces that are symmetrical when a symmetrical surface is arranged vertically in the center of the storage portion 9 of the cabinet 8 in the front-rear direction. It is formed symmetrically. Since the left slide rail and the right slide rail are symmetrical with each other, they are formed as separate members. In FIG. 17, only the right slide rail 6 is illustrated, and the left slide rail 6 has a plane-symmetric shape with respect to the right slide rail 6, and thus description thereof is omitted.

That is, as shown in FIG. 17, the slide rail 6 has a rail sliding surface 60 on the upper surface and a rail side sliding surface 63 on the inner surface along the longitudinal direction of the rail.
It is long and elongated. A chevron-shaped chevron support contact part 61 is formed as a contact part only on the front end portion of the slide rail 6 so as to protrude upward from the rail sliding surface 60, and further inside the chevron support contact part 61. In the (side), it extends so that the curved wall part 64 may protrude. As shown in FIG. 17C, the curved wall portion 64 rises from the lower portion along the outer shape of the mountain-shaped support contact portion 61, and when the slide rail 6 is viewed from the front or the side, the upper portion of the curved wall portion 64. Are formed in a shape that is inclined and curved from the front side to the back side.

  As shown in FIG. 17, a chevron sliding surface 62 is formed at the upper end of the chevron support contact portion 61, the door body 2 has its inner surface slidably contacted on the chevron sliding surface 62, and the door body 2 is It can move back and forth. The outer side of the curved wall portion 64 of the chevron support abutment portion 61 is an inclined surface 66, and as shown in FIG. When closed, the inner surface of the door main body 2 comes into contact with the inclined surface 66. Further, a holding upper end portion 65 is formed at the tip of the curved wall portion 64, and as shown in FIG. 23, when the door main body 2 is turned in the closing direction, the holding upper end portion 65 moves from the arcuate concave surface 74 of the slider 7. A lifting force is generated on the slider 7 and the door body 2 by hitting the lifting inclined surface 75.

  Further, as shown in FIG. 17, the slide rail 6 is provided with a fixing hole 68 for a fixing screw penetrating in the horizontal lateral direction, and the slide rail 6 can be easily fixed at an arbitrary position on the inner wall surface of the cabinet 8. Is possible. The fixed surface of the slide rail 6 is a surface that appears in front of FIG. 17B, and the fixed surface is applied to the side wall of the storage portion 9 and fixed using the fixing holes 68 and fixing screws. Further, an entrance space 69 for the slider 7 is formed in the curved wall 64 projecting inward from the chevron support contact part 61, that is, the inner part of the chevron support contact part 61, and the door body 2 is pulled out. At this time, the lifting and locking portion 73 at the tip of the slider 7 can smoothly enter the entry space 39 from the rail side sliding surface 63.

  Thus, as shown in FIG. 21, when the door body 2 is pulled out from the upper position in the storage portion 9 in order to close the door body 2, the inner surface of the door body 2 is above the mountain-shaped sliding surface 62 of the mountain-shaped support contact portion 61. And move forward. Thereafter, the lifting and locking portion 73 of the slider 7 enters the entry space 69.

  On the other hand, as shown in FIGS. 18 and 19, the slider 7 has a slide body 70 that is a main body formed in a rectangular parallelepiped shape, and a lifting engagement portion 73 that protrudes forward from the front portion of the slide body 70. Is done. Flat side sliding surfaces 71 are formed on both sides of the slide body 70, and when the slider 7 is fixed to the inner surface of the door body 2 and the door body 2 is inserted into the upper part of the storage portion 9, the flat side sliding surfaces 71 are formed. The side sliding surface 71 can come into contact with the rail side sliding surface 63 of the slide rail 6. Accordingly, as shown in FIG. 20, when the opened door body 2 is pulled out and closed, the side sliding surface 71 of the slider 7 comes into sliding contact with the race side sliding surface 63 of the slide rail 6 or the race side. The door main body 2 can be stably pulled out or pushed in so as to move with a slight gap between it and the sliding surface 63.

  As shown in FIGS. 18 and 19, the shape of the slider 7 is a relatively simple rectangular parallelepiped shape, which can be reduced in size and simplified as compared with the above-described embodiment, and space for a storage portion such as a cabinet is reduced. It can be used widely and the manufacturing cost can be reduced. The fixing surface 78 of the slider 7 is formed on the upper surface of the slide body 70, and a fixing hole 77 is formed from the fixing surface 78 to the bottom surface. The slider 7 is fixed to the lower surface of the rear end portion of the door body 2 by the fixing screw and the fixing hole 77. The lifting lock 73 is fixed to the front.

  In addition, the fixed surface 78 of the slider 7 is flat, and the positioning portion provided on the slider of the above embodiment is deleted, and the back surface is lowered from the fixed surface 78 at a right angle. Thereby, the fixing position to the rear end part (upper end part) of the door main body 2 can be adjusted, and the gap generated between the upper end of the door main body 2 and the inner side surface of the cabinet is adjusted to the minimum when the door main body 2 is closed. Can do.

  As shown in FIGS. 18 and 19, the slider 7 is provided with a lifting lock 73 projecting forward from the front portion of the slide body 70, and the lifting lock 73 is hook-shaped at the tip. The locking tip 76 is formed in a shape provided upward. As shown in FIG. 22, the locking tip 76 of the lifting locking portion 73 is engaged with the inside of the curved wall portion 64 of the slide rail 6 when the door body 2 is rotated and closed downward. The door body 2 is stably held in a closed state (substantially vertical state).

  Further, as shown in FIGS. 18 and 19, the lifting inclined surface 75 is formed so as to be gradually inclined upward from the locking tip portion 76 of the lifting locking portion 73 to the back side, An arcuate concave surface 74 is formed in the middle portion of the surface 75. As shown in FIG. 23, when the door body 2 is rotated downward so as to close the door body 2, the upper end holding portion 65 at the upper end of the curved wall portion 64 of the slide rail 6 is formed on the arcuate concave surface 74. Abutting at a point D, a lifting force F3 for lifting the slider 7 and the door main body 2 acts on the point D.

  The flap door having the above-described configuration is used by being attached to the storage unit 9 of the cabinet 8 such as a bookshelf or a library. As shown in FIGS. 13 and 14, the pair of left and right slide rails 6 are horizontally placed on the upper portions on both sides of the left and right inner wall portions in the storage portion 9 of the cabinet 8 with the rail sliding surfaces 60 facing upward. And fixed by inserting fixing screws into the fixing holes 68 on both the front and rear sides.

  As shown in FIG. 15, the slide rail 6 is attached to a position where a space in which the door main body 2 can be inserted with a sufficient space is provided above the rail. Furthermore, the stopper 5 is fixed to the back of both sides of the side wall of the storage unit 9. The stopper 5 is fixed with a fixing screw at a position where the rear end portion of the door body 2 abuts when the door body 2 is pulled back horizontally to the upper portion of the storage portion 9 when opened.

  Since the stopper 5 can be fixed at any appropriate position with respect to the slide rail 6, the door body 2 having various lengths can be stopped at an appropriate open position (horizontal insertion position). Even if it is the cabinet 8 from which the length of the door main body 2 and the depth length of the accommodating part 9 differ, the door main body 2 can be stopped in an appropriate horizontal insertion position. Therefore, the slide rail 6 of this flap door can be used for cabinets 8 of various sizes, for example, only by manufacturing one type of length.

  On the other hand, the slider 7 is fixed to both sides of the lower surface of the rear end portion of the door body 2 with the lifting and locking portions 73 facing forward. As shown in FIG. 14, the distance between the pair of sliders 7 is fixed at a distance that is slidably positioned inside the pair of slide rails 6. Such a slider 7 may be fixed by screwing a fixing screw into the fixing hole 77 by applying the fixing surface 78 on the upper surface thereof to the lower surface of the rear end portion of the door body 2. For this reason, even if it is a general user, it can attach easily to the storage part of furnitures, such as a cabinet, by a retrofit. Since the pair of sliders 7 attached to the left and right sides of the inner side surface of the door body 2 have the same shape, they can be easily fixed without confirming whether they are left or right.

  In this way, the pair of slide rails 6 and the pair of sliders 7 can be easily and retrofitted, and even if the user who purchased the cabinet installs the flap door by himself, it can be easily attached. .

  When the door body 2 with the slider 7 fixed on both sides of the inner rear end (back) is assembled to the storage portion 9 of the cabinet 8, the rear end portion of the door body 2 is inserted into the upper space position in the storage portion 9. Insert like so. At this time, the sliders 7 on both sides of the inner rear end part enter the inner sides of the side sliding surfaces 71 of the slide rails 6 on both sides, and the inner edges on both sides of the door body 2 are the chevron support contact portions 61 of the slide rail 6. It is inserted so as to be placed on the upper part and the rear part of the rail sliding surface 60.

  By this operation, as shown in FIG. 15, the door body 2 is placed on the mountain-shaped support contact portion 61 and the rail sliding surface 60 of the slide rail 6 and slidable back and forth. 2 is mounted in the storage unit 9.

  As shown in FIG. 5, when the door body 2 is inserted into the upper portion of the storage portion 9 is an open state, from this state, when the storage portion 9 is closed by the door body 2, first, the door body 2 is moved forward. Pull out. At this time, as shown in FIG. 20, the side sliding surfaces 71 of the sliders 7 on both sides slide between the rail side sliding surfaces 63 and the rail side sliding surfaces 63 of the slide rails 6 on both sides, As shown in FIG. 21, the inner side surfaces of both side edges of the door body 2 slide on the mountain-shaped support contact portions 61 and the rail sliding surfaces 60 of the slide rails 3 on both sides and can be pulled out smoothly. At this time, the front part of the door body 2 may be pulled out by slightly lifting it.

  Next, as shown in FIG. 22, the lifting and locking portions 73 of the sliders 7 on both sides come into contact with the mountain-shaped support contact portions 61 of the slide rail 6 at the drawer end of the door body 2. At this time, as shown in FIG. 22, the front part of the door main body 2 is pushed downward a little to rotate downward. As shown in FIG. 22, the door body 2 rotates so as to raise the slider 7 upward with the locking tip portion 76 of the lifting locking portion 73 of the slide rail 6 as a fulcrum.

  At this time, the slider 7 is rotated while the lifting inclined surface 75 is in sliding contact with the holding upper end portion 65 of the rail. And as shown in FIG. 22, the inner surface of the door main body 2 will be in the state contact | abutted to the inclined surface 66 of the curved wall part 64 of the slide rail 6. As shown in FIG. In this state, the door body 2 has an inclination angle of about 45 degrees with respect to the opening of the storage unit 9 and is closed to about half.

  When the door body 2 is further rotated downward, as shown in FIG. 22, the inner surface of the door body 2 is rotated while abutting against the inclined surface 66 of the curved wall portion 64 and sliding downward, As shown in FIG. 23, the upper end 65 of the curved wall 64 is in contact with the arcuate concave surface 74 of the upper locking portion 73 of the slider 7.

  In this way, when the door body 2 is rotated downward and closed, the door body does not rotate around the shaft pin as in the prior art, but the door 7 is brought into contact with the slider 7 and the slide rail 6 to contact the door. Since the main body 2 rotates while sliding downward, the required upper space in the storage unit 9, that is, the rotation height of the door main body 2 can be reduced.

  At this time, as shown in FIG. 23, the inner side surface of the door main body 2 is placed at a point B on the inclined surface 66 of the curved wall portion 64 (on a line extending in the paper surface thickness direction of the point B in FIG. 23). It becomes a state. Further, at this time, the curved wall portion 64 is sandwiched between the inner side surface of the door body 2 and the arcuate concave surface 74 of the lifting and locking portion 73 of the slider 7 and also has a door stop. Is retained.

  When the door body 2 is rotated so as to completely close the door body 2 as shown from the upper side to the lower side in FIG. 22, the door body 2 has an inclined surface of the curved wall portion 64 as shown in FIG. A moment acting as a fulcrum B on 66 acts. At this time, the curved wall portion 64 is sandwiched between the inner side surface of the door body 2 and the arcuate concave surface 74 of the lifting and locking portion 73 of the slider 7, and the upper end portion of the bent wall portion 64 at the distal end. 65 and the arcuate concave surface 74 of the lifting and locking portion 73 of the slider 7 are in contact with each other at the contact point D.

  For this reason, as shown in FIG. 23, when the door body 2 is pushed with the closing force F0 in the closing direction, the holding upper end portion 65 (contact point D) at the distal end of the curved wall portion 64 is determined from the moment around the fulcrum B. The pressing force F <b> 1 is received from the arcuate concave surface 74 of the lifting locking portion 73 of the slider 7. As a result, the contact point D of the arcuate concave surface 74 receives, as a reaction force, a lifting force F3, which is a vertical component of the pressing force (lifting force) F1, from the holding upper end portion 65.

  For this reason, when the door body 2 is turned to the closed side, as shown in FIG. 23, the holding upper end portion 65 at the tip of the curved wall portion 64 changes from the arcuate concave surface 74 to the lifting inclined surface 75 on the lower side. The arcuate concave surface 74 of the lifting and locking portion 73 rotates upward so as to make sliding contact, and the lifting and locking portion 73 of the slider 7 is lifted as shown from the upper side to the lower side of FIG. Thereby, the door main body 2 rises with the slider 7, and the clearance C1 between the upper end part of the door main body 2 and the top plate of the storage part 9 at the time of closing becomes the minimum state as shown in the lower side of FIG. Further, at this time, the contact point of the holding upper end portion 65 shifts from the arcuate concave surface 74 to the lifting inclined surface 75 and gets over the corner portion, and the door body 2 is in a stable state.

  In the closed state, as shown in the lower side of FIG. 22, the holding upper end portion 65 comes into contact with the lifting inclined surface 75, and in this state, the load due to the weight of the door body 2 is held from the contacting portion of the lifting inclined surface 75. The upper end portion 65 is applied. For this reason, the closed state of the door main body 2 shown in the lower side of FIG. 22 is maintained by the frictional resistance of the contact portion.

  In the figure shown in the lower side of FIG. 22, the door body 2 is in a closed state with the lower part of the door body 2 placed slightly forward so that the door body 2 can be used as a book stand in front of the cabinet. Can be closed in a 90 ° vertical position in accordance with the storage opening of the cabinet 8. In that case, the positions may be attached to the slide rails 6 on both sides slightly forward, the lower end portion of the door body 2 may be moved into the storage portion 9 and stopped by catching.

  Thus, when the door body 2 is closed, the door body 2 is not closed by rotating around the shaft center such as the shaft pin, but the slider 7 of the door body 2 sliding on the slide rail 6 is slid. After reaching the end of the rail, the slider 7 is moved by the action of the arcuate concave surface 74 and the lifting inclined surface 75 of the lifting locking portion 73 of the slider 7 and the holding upper end portion 65 of the curved wall portion 64 on the slide rail 6 side. Since the flap door is closed by rotating so as to be lifted, the gap C1 on the upper side of the door body 2 in the closed state can be minimized.

  Further, the position of the slider 7 fixed to the rear end portion (upper end portion) of the door body 2 is adjusted by adjusting the position so as to be slightly inside the rear end portion (upper end portion) of the door body 2. In addition, the gap C1 on the upper side of the door body 2 in the closed state can be minimized.

  When the door body 2 is closed, the state shown in the lower side of FIG. 22 is obtained. At this time, the locking tip portion 76 of the lifting locking portion 73 of the slider 7 is located on the curved wall portion 64 on the slide rail 6 side. Since the upper end 65 is locked or can be locked, the door body 2 is not inadvertently detached.

  On the other hand, when the door body 2 in the closed state is opened, the door body 2 is rotated upward so that the lower portion of the door body 2 is pulled forward. At this time, the door main body 2 rotates in the counterclockwise direction in FIG. 23 around the fulcrum B on the inner surface thereof, and is in the state shown in the upper diagram of FIG.

  Furthermore, when the door main body 2 rotates, as shown in the lower figure of FIG. 21 and the upper figure, the contact position of the inner side surface of the door main body 2 moves from the inclined surface 66 of the slide rail 6 to the holding upper end 65, The lifting inclined surface 75 of the slider 7 is separated from the curved wall portion 64.

  Further, when the rear portion of the door body 2 is inserted into the upper portion of the storage portion 9 while rotating the door body 2 upward, the side sliding surfaces 71 of the sliders 7 on both sides are the rail side portions of the slide rails 6 on both sides. It slides between the sliding surfaces 63, and the inner side surfaces of both side edges of the door body 2 slide backward on the holding upper end portion 65 and the rail sliding surface 60 of the slide rail 6, as shown in the upper diagram of FIG. It becomes such an open state.

  When removing the door body 2 from the cabinet 8, in the state shown in FIG. 15, if the entire door body 2 is lifted up slightly and pulled out to the front, the slider 7 moves the chevron support contact portion 61 of the slide rail 6. The door body 2 can be easily removed from the cabinet 8 because it can be easily pulled over and pulled out.

2 Door main body 3 Slide rail 4 Slider 5 Stopper 6 Slide rail 7 Slider 8 Cabinet 9 Storage portion 30 Rail sliding surface 31 Abutting portion 31a Inclined surface 32 Angle sliding surface 33 Abutting end portion 34 Wall portion 35 Holding upper end portion 36 First inclined surface 37 Second inclined surface 38 Fixing hole 39 Entrance space 40 Sliding part main body 41 First sliding surface 42 Abutting surface 43 Lifting locking part 44 Arc-shaped concave surface 45 Lifting inclined surface 46 Locking tip part 47 Fixed hole 48 Inclined sliding surface 49 Positioning portion 50 Cabinet 51 Door 52 Rail 53 Axis pin member 54 Axis pin 60 Rail sliding surface 61 Angle support contact portion 62 Angle sliding surface 63 Rail side sliding surface 64 Curved wall Part 65 Holding upper end part 66 Inclined surface 68 Fixed hole 69 Entrance space 70 Slide body 71 Side sliding surface 73 Lifting locking part 74 Arc-shaped concave surface 75 Lifting inclined surface 76 Locking tip 77 Fixing hole

Claims (9)

A plate-like door body, a slider fixed to both inner ends of the door body, and slide rails fixed to both side walls in the storage portion, and when opened, the door body is located at an upper portion in the storage portion. In the flap door that is inserted and closed when the door is closed, the slider or the door body is pivoted downward while sliding forward on the sliding surface of the slide rail to close the storage portion.
A lifting latching portion protrudes from the front portion of the slider, and an inclined tilting surface is provided on the upper surface of the lifting latching portion, and an arcuate concave surface is provided at an intermediate portion of the lifting slope surface. And
At the front end of the slide rail, a contact portion projects upward from the rail sliding surface, and a chevron sliding surface on which the inner side surface of the door main body slides is provided on the corresponding contact portion. The side wall is bent so that the curved wall protrudes,
An entrance space into which the lifting lock of the slider can enter is provided inside the curved wall, and the upper end of the bent wall is in contact with the lifting lock of the slider when closed. A holding upper end for lifting the slider is provided,
When the door is closed, at the final stage, the arcuate concave surface and the lifting inclined surface of the lifting locking portion of the slider are sequentially brought into sliding contact with the holding upper end portion, and the slider is lifted. Flap door to do.   The slide rails are formed in a symmetrical shape with a center line perpendicularly passing through the center position in the longitudinal direction as a symmetry axis, and a pair of slide rails fixed to both side walls in the storage portion are formed in the same shape. The flap door according to claim 1.   The slider is formed in a symmetric shape having a center line perpendicularly passing through the center position of the front surface as a symmetry axis, and slides on the lower surface of the sliding portion body of the slider so as to be in sliding contact with the rail sliding surface of the slide rail. The flap door according to claim 1, wherein a surface is provided.   The flap door according to claim 1, wherein a hook-shaped locking tip portion is provided at a tip of the lifting locking portion of the slider.   2. An inclined surface that rises at an acute angle from the rail sliding surface is provided in a portion of the contact portion of the slide rail that extends from the contact end portion to the rail sliding surface. Flap door as described.   A rail side sliding surface is formed on the inner side surface of the slide rail so that the side surface of the slider can be slidably contacted. 2. The flap door according to claim 1, wherein the flap door moves in a contactable state.   The slide main body of the slider is formed in a substantially rectangular parallelepiped shape, the lifting locking portion projects from the front portion of the main body, and the rail of the slide rail is formed on the side surfaces of the sliding main body and the lifting locking portion. The flap door according to claim 6, wherein a side sliding surface capable of sliding contact with the side sliding surface is formed.   The pair of slide rails fixed to the both side wall surfaces in the storage portion are provided with a chevron support contact portion as the contact portion only at the front end, and are planes that are symmetrical surfaces that pass vertically through the center of the storage portion space. The flap door according to claim 6, wherein the pair of slide rails are formed in a symmetrical shape.   7. A stopper that contacts an end of the door body when the door main body is inserted into the storage portion to open the storage portion is provided on a side wall portion in the storage portion. Flap door as described.

Images