JP6680619B2 - door - Google Patents

Description

  The present invention relates to a soundproof door that is attached to, for example, a toilet.

  In Patent Document 1, when the door is opened, it is stored in a storage groove provided in the lower end portion of the door body, and when the door is closed, it descends from the lower end surface of the door body, and between the lower end surface of the door body and the floor surface. A door including a sound insulating member that closes a gap is disclosed.

  Further, the door 100 shown in FIG. 6 is provided with the bottom device 101 in the recessed groove 103 formed in the bottom portion of the door body 102. The bottom device 101 includes a sound insulating member 101a that closes a space between the bottom surface of the door body 102 and the floor surface 106 so that the sound insulating member 101a can move up and down in the case portion 101b. Further, the vertical plate portion of the case portion 101b is in surface contact with the groove side wall 103a of the concave groove 103. Further, the bottom device 101 is fixed in the concave groove 103 by passing a screw 107 through the upper plate portion of the case portion 101b and screwing it into a position above the concave groove 103.

Japanese Unexamined Patent Publication No. 8-284546

  However, in the door 100, sound propagation occurs due to the vertical plate portion of the case portion 101b being in surface contact with the groove side wall 103a of the recessed groove 103, and particularly the sound insulation performance of sound around 500 Hz deteriorates. There are drawbacks. On the other hand, the door described in Patent Document 1 has a gap forming structure in which the portion corresponding to the vertical plate portion of the case portion 101b does not come into contact with the portion corresponding to the back surface of the groove side wall 103a at all. There is a drawback that the sound insulation performance is reduced.

  Further, since the screw 107 is screwed into the upper plate portion of the case portion 101b, it is necessary to wind the sound insulating member 101a so that the mounting position of the screw 107 can be visually recognized. There is also a drawback that the bottom device 101 cannot be assembled efficiently.

  In view of the above circumstances, it is an object of the present invention to provide a door that can improve sound insulation performance.

  In order to solve the above problems, the door of the present invention is provided with a bottom device in which a sound insulating member for closing a space between the bottom surface of the door body and the floor surface is provided in a vertically open case portion so as to be vertically movable. A door provided in a groove formed in the bottom portion of the door body, wherein at least one of the vertical plate portions of the case portion facing the groove side wall of the groove has a protrusion protruding toward the groove side wall. It is characterized in that a portion is formed.

  With the above configuration, since the vertical plate portion of the case portion is formed with the protrusion protruding toward the groove side wall, the vertical plate portion of the case portion and the groove side wall are in surface contact with each other. Can be avoided and, for example, the sound insulation performance of sound around 500 Hz is improved.

  A lower end protrusion protruding toward the groove side wall may be formed at a lower end of the vertical plate portion of the case portion. According to this, the strength of the bottom device can be improved by the projecting portions at the two upper and lower portions and the lower end projecting portion.

  A pad may be provided in a gap formed between the portion where the protrusion is not formed and the side wall of the groove. According to this, compared with the case where there is no padding, for example, the sound insulation performance of sound around 1000 Hz can be improved.

  The filling may be thicker than the protruding amount of the protrusion, and the filling may be provided in close contact with the groove side wall and the vertical plate portion of the case portion. According to this, compared with the case where a padding thinner than the thickness of the space is provided, chattering of the bottom device can be suppressed and the sound insulation performance can be improved.

  The padding may be provided in a part of a gap formed between a portion where the protrusion is not formed and the side wall of the groove. Here, if the padding is provided over the entire gap, the surface contact state becomes similar to that of the conventional structure, and, for example, the sound insulation performance of sound around 500 Hz is deteriorated. By providing the padding in a part of the gap, it is possible to suppress a decrease in sound insulation performance of sound around 500 Hz.

  The padding may be provided at a position lower than the protrusion. According to this, it is possible to efficiently prevent the sound leakage on the lower side of the bottom device.

  A closing member is provided on the lower side of the fore edge of the door body, and the closing member may be fastened to the fore edge of the door body while being engaged with the end portion of the bottom device. According to this, unlike the prior art, the work of winding the sound insulating member to expose the screw mounting location is not required, and the bottom device can be efficiently assembled to the door body.

  An engaging portion that engages with the protrusion may be formed on the back surface of the closing member. According to this, by engaging the engaging portion with the protrusion, the bottom device can be firmly fixed by the closing member.

  According to the present invention, there is an effect that the sound insulation performance can be improved in the door provided with the bottom device at the bottom portion of the door body. Also, if the closing member provided on the lower side of the fore edge of the door body is configured to be fastened to the fore edge of the door body while being engaged with the end portion of the bottom device, the assembly of the bottom device for the door body Can be done efficiently.

It is a schematic perspective view showing the door of the embodiment of the present invention. It is a figure showing the lower part of the door of Drawing 1, the figure (A) is the outline side view showing the attachment state of the bottom device seen from the front side of the door, and the figure (B) is the figure. It is a schematic sectional drawing of the AA arrow of (A). It is explanatory drawing which showed the state which made the sound insulation member protrude from the bottom device in the door of FIG. It is explanatory drawing which showed the assembly of the bottom device to the lower part of the door main body of FIG. It is the schematic side view which showed the state which looked at the door of other embodiment of this invention from the edge side. It is explanatory drawing which showed the bottom structure of the conventional door.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIG. 1, the door 1 of this embodiment includes a bottom device 2 at a lower portion of a door body 11. A door knob 12 is provided on the edge side (edge side) of the door 1 and in the middle of the height direction. By operating the door knob 12, the door 1 can be rotated and opened / closed. . A thumb turn 13 is attached near the door knob 12. When the lock operation is performed on the thumb turn 13, the operation rod 13a connected to the thumb turn 13 acts on the bottom device 2, and the sound insulation operation is performed on the bottom device 2. The location where the door 1 is provided is, for example, a toilet, and the sound leakage from the inside of the toilet is reduced by locking the thumb turn 13 during use. Note that the door 1 is not limited to the structure in which the bottom device 2 interlocks with the thumb turn 13 and performs the sound insulation operation.

  As shown in FIG. 2A, FIG. 2B, FIG. 3 and FIG. 4, the bottom device 2 closes a space between the bottom surface of the door body 11 and the floor surface 4 in the case portion 21 thereof. For example, the sound insulation member 22 made of a rubber material is provided. The upper side of the sound insulating member 22 is supported by, for example, a support member 22a made of aluminum alloy. The support member 22a is provided so as to move up and down by the operation rod 13a. Depending on the up and down motion of the support member 22a, the sound insulation member 22 is pressed against the floor surface 4 and separated from the floor surface 4. In the state of being formed and in the above-mentioned pressure contact, sound leakage is reduced. In this example, when the thumb turn 13 is locked, the sound insulating member 22 falls by its own weight to perform sound insulation, but the structure is not limited to this.

  A groove 11a is formed in the bottom of the door body 11, and the bottom device 2 is embedded in the groove 11a. For example, the thickness (width) of the groove 11a is about 18 mm and the height is about 52 mm. The thickness and height of the case portion 21 in the bottom device 2 are set to fit within the recessed groove 11a, and the length thereof is set to be slightly shorter than the width of the door body 11.

  The case portion 21 has a substantially U-shaped cross-section with an open lower side, and includes an upper plate portion 211 and vertical plate portions 212 that hang down from both ends thereof. Each vertical plate portion 212 faces the groove side wall 11b of the concave groove 11a. Then, each vertical plate portion 212 is formed with a protrusion 21a that protrudes toward the groove side wall 11b and extends linearly in the horizontal direction at a position higher than the center position in the height direction, and is provided at the lower end position. Similarly, a lower end convex portion 21b that protrudes toward the groove side wall 11b and extends linearly in the horizontal direction is formed. When the case portion 21 is manufactured by extrusion molding of an aluminum alloy, for example, the protrusion 21a and the lower end protrusion 21b can be integrally formed with the case portion 21. Of course, the protrusion 21a and the lower end protrusion 21b may be provided on each vertical plate portion of the case portion 21 by adhesion or the like. The projections 21a are not limited to linear shapes, and may be formed in a scattered manner. When the protrusions 21a are provided linearly, the groove side walls 11b can be brought into line contact, and when they are provided in a scattered manner, the groove side walls 11b can be made point contact. When the padding 3 is provided as described later, the protrusion 21a and the groove side wall 11b may not come into contact with each other depending on the thickness of the padding 3. However, even in this case, the vertical plate portion 212 and the groove side wall are not formed. It is possible to avoid direct surface contact with 11b.

  The protrusion amount of the protrusion 21a and the lower end protrusion 21b is, for example, about 1.5 mm. The range of the protrusion amount can be set to 1.0 mm to 2.0 mm, for example. Further, the vertical height (vertical thickness) of the protrusion 21a and the lower end protrusion 21b is, for example, about 1.0 mm. The range of the vertical height may be, for example, 0.5 mm to 5.0 mm. Further, the height of the formation position of the protrusion 21a is, for example, about 30 mm from the lower surface of the case 21, but is not limited to such a height.

  A sheet-shaped or plate-shaped padding 3 is provided in a gap formed between the groove side wall 11b and a portion where the protrusion 21a and the lower end protrusion 21b are not formed. In this embodiment, the padding 3 is not provided in all the gaps, but is provided in close contact with the groove side wall 11b and the vertical plate portion 212 at a position lower than the protrusion 21a. . The performance evaluation based on the material of the stuffing 3 will be described later.

  A countersink portion 11c is formed on the lower side of the fore edge of the door body 11, and a closing member 14 that closes the longitudinal end surface of the bottom device 2 is fitted into the countersunk portion 11c. . The height of the recessed portion 11c is higher than the height of the recessed groove 11a, and a mounting portion for the screw 5 is formed in the small portion of the door body 11 above the recessed groove 11a. . This mounting portion may not have a prepared hole for mounting the screw 5 in particular.

  On the back surface of the closing member 14, there are formed first engaging portions 14a which are located above and below the respective protruding portions 21a and engage with the protruding portions 21a. The width of the first engaging portion 14a is approximately the same as the width of the gap (protrusion amount of the protrusion 21a) in which the padding 3 is provided, the height is, for example, approximately 2 mm, and the depth (depth) is For example, it is about 3 mm. Further, the vertical interval between the first engaging portions 14a is set to be approximately the same as the height of the protrusion 21a. Further, on the back surface of the closing member 14, there is formed a second engaging portion 14b located between the upper surface of the concave groove 11a and the upper plate portion 211 of the case portion 21. The second engaging portion 14b may not be provided, and in this case, the upper plate portion 211 of the case portion 21 comes into contact with the upper surface of the concave groove 11a.

  A through hole into which the screw 5 is attached is formed in the upper portion of the closing member 14. With the first engagement portion 14a engaged with each protrusion 21a and the second engagement portion 14b engaged with the case portion 21, the screw 5 is inserted through the through hole into the door body. By screwing the closing member 14 into the edge portion of the door device 11, the closing member 14 is fastened to the edge portion of the door body 11 while being engaged with the end portion of the bottom device 2. In other words, the bottom device 2 is fixed to the door body 11 by the two screws 5 through the closing member 14 using the small edge of the door body 11. When the screw 5 is attached to the upper side of the closing member 14, the lower side of the closing member 14 tries to rotate around the screw 5 by screwing the screw 5, but this rotation causes the closing member 14 to rotate. This is prevented by the protrusion 21a engaging with the first engaging portion 14a.

  With the above configuration, since the vertical plate portion 212 of the case portion 21 in the bottom device 2 is formed with the protrusion portion 21a protruding toward the groove side wall 11b, the case portion 21 and the case portion Surface contact with the groove side wall 11b can be avoided, and, for example, sound insulation performance of sound around 500 Hz is improved.

  When the padding 3 is provided in the gap formed between the portion where the protrusion 21a is not formed and the groove side wall 11b, compared with the case where the padding 3 is not provided, for example, around 1000 Hz. The sound insulation performance of the sound can be improved.

Table 1 shows the evaluation results of the sound insulation performance with and without the padding 3. In addition, in Table 1, MDF (medium density fiberboard: medium quality fiberboard) has a density of 0.35-0.80 g / fiberboard (fiberboard) produced from plant fibers such as wood. it is of the cm ^3. Further, the trade name Epto Sealer (registered trademark) is a sealing material made of foamed rubber whose main component is EPDM rubber. Further, t2.5 means a thickness of 2.5 mm, and t2 means a thickness of 2 mm. In this evaluation test, the protrusion amount of the protrusion 21a is 1.5 mm. Further, W = 25 mm indicates that the width (height in the mounted state) of the filling 3 is 25 mm. The bending strength of the MDF may be in the range of 20.0 to 35.0 N / mm ² . Further, the compressive strength of the sealing material made of the foamed rubber may be in the range of 0.12 to 0.40 N / mm ² .

  As can be seen from Table 1 above, in the case where the filling 3 was not provided, the sound insulation performance of the sound of 1000 Hz did not reach the target sound insulation volume (30.1 dB), but by providing the filling 3, the target sound insulation was achieved. The amount could be reached. On the other hand, regarding the sound insulation performance of the sound of 500 Hz, although the sound insulation performance was slightly deteriorated by providing the padding 3, it did not fall below the target sound insulation volume. The padding 3 is not limited to the MDF, foamed rubber, or the like. Further, the thickness of the MDF can be set in the range of 2.5 to 2.7 mm, and the thickness of the sealing material made of the foamed rubber can be set in the range of 2.0 to 2.7 mm, for example. It can be a range. When the thickness of the padding 3 is thicker than the protruding amount of the protrusion 21a, the padding 3 comes into close contact with the groove side wall 11b and the vertical plate portion 212. When the padding 3 is provided so as to be in such a close contact state, chatter and the like of the bottom device 2 can be prevented as compared with the case where the padding 3 is provided in the non-adhesive state (when the padding 3 thinner than the thickness of the gap is provided). It is possible to suppress and improve the sound insulation performance.

  Here, when the thickness of the MDF exceeds the protrusion amount of the protrusion 21a, the protrusion 21a is not in line contact with the groove side wall 11b on the side where it is provided, but on the opposite side. The protrusion 21a can make line contact with the groove side wall 11b. Further, when the sealing material made of the foamed rubber is provided as the padding 3, even if the thickness thereof exceeds the protruding amount of the protruding portion 21a, the protruding portion 21a is brought into contact with the groove side wall 11b due to its flexibility and elasticity. It is possible to However, even when the sealing material is considerably thick and the contact does not occur, it is possible to avoid the vertical plate portion 212 from directly making surface contact with the groove side wall 11b. It is possible to obtain such sound insulation characteristics.

  Further, when the padding 3 is provided in the entire gap formed between the portion where the protrusion 21a is not formed and the groove side wall 11b, it becomes close to the state of surface contact similar to the conventional structure. , The sound insulation performance of sound around 500 Hz may be deteriorated. By providing the padding 3 in a part of the gap, it is possible to suppress a decrease in the sound insulation performance of sound around 500 Hz. In particular, when the padding 3 is provided below the protrusion 21a, it is possible to prevent the sound insulation performance of the sound around 500 Hz from being deteriorated, and at the same time, to efficiently leak the sound from the lower side of the bottom device 2. Can be prevented.

  Further, when the lower end convex portion 21b is formed on the lower end portion of the vertical plate portion 212 of the case portion 21, the strength of the bottom device 2 can be improved.

  Further, the bottom device 2 is fastened to the fore edge of the door body 11 in a state where the closing member 14 provided on the lower side of the fore edge of the door body 11 is engaged with the end portion of the bottom device 2. Unlike the conventional case, it is not necessary to wind the sound insulating member 22 to expose the screw mounting location, and the bottom device 2 can be efficiently assembled to the door 1.

  Further, when the first engaging portion 14a that engages with the protruding portion 21a is formed on the back surface of the closing member 14, by engaging the first engaging portion 14a with the protruding portion 21a, The bottom device 2 can be firmly fixed by the closing member 14.

  In the above example, the protrusions 21a are formed on the vertical plate portions 212 on both sides of the case portion 21 in the bottom device 2, respectively, but the present invention is not limited to this, and only one vertical plate portion 212 has the protrusions. The structure may be such that the portion 21a is formed. For example, as shown in FIG. 5, the vertical plate portion 212 on the other side where the protrusion 21a is not formed is formed with a cutout portion 21c in which the end face side of the vertical plate portion 212 is slightly cut away. The depth length of the cutout portion 21c (the direction perpendicular to the paper surface of the drawing) is, eg, about 3 mm. Then, on the back surface of the closing member 14, an engaging convex portion 14c that fits into the notch portion 21c is formed. Note that, instead of the cutout portion 21c, a recessed groove portion shallower than the wall thickness of the vertical plate portion 212 may be formed.

  Even with such a structure, it is possible to improve the sound insulation performance of the sound around 500 Hz and around 1000 Hz. In addition, the bottom device 2 can be efficiently attached to the door 1 by the closing member 14.

  Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range as the present invention or within an equivalent range.

1: Door 2: Bottom device 3: Padding 4: Floor 5: Screw 11: Door body 11a: Groove 11b: Groove side wall 11c: Counterbore part 12: Door knob 13: Thumb turn 13a: Operation rod 14: Closing member 14a : 1st engaging part 14b: 2nd engaging part 14c: Engaging convex part 21: Case part 21a: Projecting part 21b: Lower end convex part 21c: Notch part 22: Sound insulation member 22a: Support member 211: Upper plate Part 212: vertical plate part

Claims (8)

  A door provided with a bottom device in which a sound insulating member that closes the bottom surface of the door body and the floor surface is provided in a lower open case so as to be vertically movable in a groove formed in the bottom portion of the door body. The door is characterized in that at least one of the vertical plate portions of the case portion facing the groove side wall of the concave groove is formed with a protrusion protruding toward the groove side wall.   The door according to claim 1, wherein a lower end convex portion projecting toward the groove side wall is formed at a lower end portion of the vertical plate portion of the case portion.   The door according to claim 1 or 2, wherein padding is provided in a gap formed between a portion where the protrusion is not formed and the groove side wall.   The door according to claim 3, wherein a thickness of the filling is larger than a protruding amount of the protruding portion, and the filling is provided in close contact with a groove side wall and the vertical plate portion of the case portion. The door to do.   The door according to claim 3 or 4, wherein the padding is provided in a part of a gap formed between a portion where the protrusion is not formed and the side wall of the groove. The door to do.   The door according to claim 5, wherein the padding is provided at a position lower than the protrusion.   The door according to any one of claims 1 to 6, wherein a closing member is provided on a lower side of the fore edge of the door body, and the closing member is engaged with an end portion of the bottom device. A door which is fastened to the edge of the door body in a state.   The door according to claim 7, wherein an engaging portion that engages with the protrusion is formed on a back surface of the closing member.