Soundproof sliding door structure

Abstract

To provide a soundproof sliding door structure that is easy to open and close. [Solution] The soundproof sliding door structure 1 comprises a sliding door 3 having a first surface 14 and a second surface 15 that close an opening 8, a wheel section 4, a rail section 7 that guides the wheel section 4 in the opening and closing direction, and an airtight material 5 located at the lower end of the sliding door 3. The wheel section 4 has an axle 30, a first wheel 31, and a second wheel 32. The first wheel 31 has a first tapered surface 34 that moves away from the first surface 14 as it extends radially outward, and the second wheel 32 similarly has a second tapered surface 38 that moves away from the second surface 15. The rail section 7 has a first contact section 46 that contacts the first tapered surface 34, a second contact section 47 that contacts the second tapered surface 38, and first guide sections 48 and second guide sections 49 that guide the first wheel 31 and the second wheel 32 downward as it moves toward the closed position, and a support section 45 that contacts the airtight material 5 when the sliding door 3 is in the closed position.

Description

Technical Field

[0001] The present invention relates to a soundproof sliding door structure with easy opening and closing operation.

Background Art

[0002] The arrangement structure of the sliding door described in Patent Document 1 includes an upper rail groove and a lower rail groove that are located opposite to each other at the lintel and the threshold, a door panel that moves through a door wheel to open and close the opening width, and a lower packing attached to the lower bottom surface of the door panel. The lower packing adheres to the threshold when the door panel closes the opening.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The lower rail groove has a substantially V-shaped cross section. The lower rail groove communicates with a recess that is deeper than the lower rail groove and is located in the depth direction through a guiding path provided with a downward taper. Therefore, when the door panel is moved from the open position to the closed position, the door panel moves downward and in the depth direction along the guiding portion and then moves into the recess. That is, since the door panel moves in three directions: the opening and closing direction, downward, and in the depth direction, it is difficult for a user who is not accustomed to operating the door panel to understand the operation of the door panel.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a soundproof sliding door structure that can be easily opened and closed by an operation similar to that of a general sliding door.

Means for Solving the Problems

[0006] (1) The soundproof sliding door structure according to the present invention comprises a wall having an opening, a sliding door having a first surface and a second surface that close the opening, a wheel portion that protrudes downward from at least a part of the lower surface of the sliding door, a rail portion located on the lower surface of the opening that guides the wheel portion in the opening and closing direction, and a first member located at the lower end of the sliding door. The wheel portion has an axis extending in a direction intersecting the opening and closing direction of the sliding door, a first wheel that rotates around the axis, and a second wheel that rotates around the axis. The first wheel has a first tapered surface that moves away from the first surface of the sliding door as it extends radially outward, and the second wheel has a second tapered surface that moves away from the second surface of the sliding door as it extends radially outward. The rail portion includes a first contact portion that abuts against the first tapered surface of the first wheel to support the first wheel, a second contact portion that abuts against the second tapered surface of the second wheel to support the second wheel, a first guide portion that guides the first wheel downward as the sliding door moves toward the closed position, a second guide portion that guides the second wheel downward as the sliding door moves toward the closed position, and a second member that abuts against the first member when the sliding door is in the closed position.

[0007] When a sliding door is moved from the open position to the closed position, it first moves along a horizontal straight line, and then moves diagonally downward along the same straight line. Therefore, the user only needs to operate the sliding door in a straight line when opening and closing it, making it as easy to operate as a typical sliding door. In addition, since the sliding door does not move in an intersecting direction, there is no need to take up a large space for installing rails in the intersecting direction, resulting in a compact soundproof sliding door structure. Furthermore, since the first component can be separated from the second component except when in the closed position, the resistance to opening and closing operations can be reduced, and deterioration of the first component due to friction with the second component is suppressed, resulting in high airtightness and stable soundproofing effect.

[0008] (2) The rail portion has a first groove and a second groove extending in the opening and closing direction, the first contact portion and the first guide portion are the upper ends of the first groove, and the second contact portion and the second guide portion are the upper ends of the second groove.

[0009] Sufficient space is ensured for the tips of the first tapered surface and the second tapered surface to move when the wheel section moves downward.

[0010] (3) The first surface and the first tapered surface are oriented in the same direction, and the second surface and the second tapered surface are oriented in the same direction.

[0011] As the rail section moves towards the closed position, the distance between the first and second guide sections in the intersecting direction increases. As a result, when the sliding door moves to the closed position, the wheel section moves downward, with the first and second tapered surfaces being sandwiched between the first and second guide sections. At this time, the wheel section is less susceptible to load in the direction in which the axle bends, thus suppressing damage. In addition, it is possible to make the support section a constant size in the left-right direction, and the area in contact with the airtight material can be made relatively large.

[0012] (4) The first member is located between the first wheel and the second wheel in the direction of intersection.

[0013] Because the first component is located in the center in the intersecting direction of the sliding door, the door is supported in the center when closed, ensuring a stable posture.

[0014] (5) The sliding door further comprises a receiving portion located at the top of the opening, the sliding door having a projection that protrudes from the upper end in the intersecting direction, and a third member located on the lower surface of the projection, the receiving portion having a contact surface located below the third member, and the third member contacts the contact surface when the sliding door is in the closed position.

[0015] When the sliding door is in the closed position, the third member is sandwiched between the protrusion and the contact surface, thus sealing the space between the top of the sliding door and the receiving part. Because the third member is sealed by the weight of the sliding door, high airtightness and stable sound insulation are achieved.

[0016] (6) The first member has a magnetic material, and the second member is magnetically attached to the magnetic material.

[0017] When the sliding door is moved to the closed position, the space between the sliding door and the second member is surely sealed.

[0018] (7) The upper surface of the second member is at the same height as the floor surface of the living room partitioned by the wall.

[0019] Since the second member and the rail portion do not protrude from the floor surface when the sliding door is in the open position, a barrier-free soundproof sliding door structure can be realized.

Effect of the Invention

[0020] According to the present invention, it is possible to provide a soundproof sliding door structure that can be easily opened and closed by an operation similar to that of a general sliding door.

Brief Description of the Drawings

[0021] [Figure 1] FIG. 1 is a perspective view showing a soundproof sliding door structure 1 according to an embodiment of the present invention. [Figure 2] FIG. 2 is a view of the first surface 14 side of the sliding door 3 as seen obliquely from the front. [Figure 3] FIG. 3 is a bottom view of the sliding door 3. [Figure 4] FIG. 4 is a cross-sectional view showing a part of the upper portion of the sliding door 3 together with the receiving portion 6 when the sliding door 3 is in the open position, with a partial enlargement. [Figure 5] FIG. 5 is a partially enlarged cross-sectional view showing the wheel portion 4 together with the rail portion 7 when the sliding door 3 is in the open position. [Figure 6] FIG. 6 is a plan view of the rail portion 7. [Figure 7] FIG. 7 is a plan view showing the position of the sliding door 3 in the open position together with the rail portion 7. [Figure 8] FIG. 8 is a plan view showing the position of the sliding door 3 in the closed position together with the rail portion 7. [Figure 9] FIG. 9 is a partially enlarged cross-sectional view showing the wheel portion 4 together with the rail portion 7 when the sliding door 3 is in the closed position. [Figure 10]Figure 10 is a partially enlarged cross-sectional view showing the upper part of the sliding door 3, along with the receiving part 6, when it is in the closed position. [Figure 11] Figure 11 is a cross-sectional view showing a partially enlarged view of the wheel portion 4A together with the rail portion 7A of the soundproof sliding door structure 1 according to Modification 1. [Figure 12] Figure 12 is a plan view showing the rail section 7A of the soundproof sliding door structure 1 according to modified example 1. [Figure 13] Figure 13 is a partially enlarged cross-sectional view showing the state of the soundproof sliding door structure 1 according to Modification 1, including the rail section 7A, when the wheel section 4A is in the closed position. [Figure 14] Figure 14(a) is a partially enlarged cross-sectional view showing the state when the wheel portion 4 of the soundproof sliding door structure 1 according to modified example 2 is in the open position, and Figure 14(b) is a partially enlarged cross-sectional view showing the state when the wheel portion 4 is in the closed position. [Figure 15] Figure 15(a) is a partially enlarged cross-sectional view showing the state when the wheel portion 4 of the soundproof sliding door structure 1 according to modified example 3 is in the open position, and Figure 15(b) is a partially enlarged cross-sectional view showing the state when the wheel portion 4 is in the closed position. [Modes for carrying out the invention]

[0022] Embodiments of the present invention will be described below with reference to the drawings as appropriate. It should be noted that the embodiments described below are merely examples of how the present invention can be realized, and the embodiments can be modified as appropriate without altering the essence of the present invention.

[0023] The following directions relating to the soundproof sliding door structure 1 are indicated as the vertical, horizontal, and front-to-back directions. The vertical direction is parallel to the longitudinal direction of the installed sliding door 3. Upward is the direction from the sill 104 to the lintel 103, and downward is the direction from the lintel 103 to the sill 104. The horizontal direction is perpendicular to the vertical direction and parallel to the thickness direction of the sliding door 3. Leftward is the direction that the second surface 15 of the sliding door 3 faces, and rightward is the direction that the first surface 14 faces. The front-to-back direction is perpendicular to the vertical and horizontal directions and is the width direction of the sliding door 3. Frontward is the direction towards the door edge, and rearward is the opposite direction.

[0024] [Soundproof sliding door structure 1] The soundproof sliding door structure 1 is installed in buildings where people live, such as houses. The soundproof sliding door structure 1 suppresses the transmission of sound through gaps between the first room 100 and the adjacent second room 101. As shown in Figures 1 and 3, the soundproof sliding door structure 1 comprises a wall 2, a sliding door 3, a wheel section 4, an airtight seal 5, a receiving section 6, and a rail section 7. The first room 100 and the second room 101 are examples of habitable rooms.

[0025] Wall 2 separates the first room 100 and the second room 101 within the house. Wall 2 has an opening 8 through which a person can enter and exit. The opening 8 is partitioned at the top by a lintel 103. The bottom of the opening 8 is partitioned by a sill 104 on which the rail section 7, described later, is located. The front of the opening 8 is partitioned by the front vertical frame 105. As shown in Figure 6, the rear of the opening 8 is partitioned by the end face 2a of wall 2. The vertical and front-to-back dimensions of the opening 8 are slightly smaller than the vertical and front-to-back dimensions of the sliding door 3.

[0026] [Sliding door 3] The sliding door 3 moves between a closed position that blocks the opening 8 and an open position that opens it. In the soundproof sliding door structure 1, there is one sliding door 3. As shown in Figure 7, the sliding door 3 in the closed position is located to the right of the wall 2. As shown in Figure 2, the sliding door 3 has a door body 10, a handle 11, a projection 12, and an airtight material 13. The airtight material 13 is an example of a third component.

[0027] The door body 10 is a plate shape with a predetermined thickness in the left-right direction. The door body 10 is longer in the vertical direction than in the front-back direction. The dimensions of the door body 10 in the left-right direction are smaller than those of the sill 104. The dimensions of the door body 10 in the front-back direction are smaller than the front-back dimensions of the sill 104 and larger than half the front-back dimensions of the sill 104.

[0028] The handle 11 is located near the front end of the first surface 14, which faces to the right of the door body 10. Although not shown in the illustration, the handle is also located near the front end of the second surface 15, which faces to the left of the door body 10.

[0029] As shown in Figures 2 and 3, the projection 12 is located at the upper end of the first surface 14. The projection 12 protrudes to the right from the first surface 14 of the door body 10. The projection 12 is, for example, a rectangular prism and has the same dimensions as the door body 10 in the front-to-back direction. The dimensions of the projection 12 in the left-to-right direction are about half the dimensions of the door body 10 in the left-to-right direction.

[0030] The airtight seal 13 seals the gap between the door body 10 and the lintel 103. As shown in Figures 3 and 4, the airtight seal 13 is located on the lower surface 16 of the projection 12. The airtight seal 13 is, for example, cylindrical in shape. The diameter of the airtight seal 13 is smaller than the left-right dimension of the projection 12. The airtight seal 13 is, for example, an elastic material that can be compressed, such as rubber or silicone. The length of the airtight seal 13 in the front-rear direction is the same as the length of the projection 12 in the front-rear direction.

[0031] [Receiving part 6] The support portion 6 restricts the sliding door 3 from moving left to right at the top of the sliding door 3. The support portion 6 is located at the top of the opening 8. The support portion 6 is located to the right of the sliding door 3. As shown in Figure 4, the support portion 6 extends from the lintel 103. The support portion 6 has a first extension portion 17 and a second extension portion 18. The first extension portion 17 extends from the lintel 103 to a position below the airtight material 13. In the front-to-back direction, the first extension portion 17 extends from the rear vertical frame 106 to the front vertical frame 105.

[0032] The second extension 18 extends to the left from the lower end of the first extension 17. The second extension 18 extends to a position to the left of the airtight material 13. The front-to-back dimensions of the second extension 18 are the same as those of the first extension 17. A contact surface 19 is located on the upper surface of the second extension 18. The contact surface 19 is located below the airtight material 13. The contact surface 19 contacts the airtight material 13 when the sliding door 3 is in the closed position.

[0033] [Wheel section 4] The two wheel sections 4 move the sliding door 3 along the rail section 7 to the closed and open positions. As shown in Figure 3, one of the two wheel sections 4 is located near the front end of the lower end 20 of the sliding door 3. The other wheel section 4 is located near the rear end of the lower end 20 of the sliding door 3. In other words, the two wheel sections 4 are located near the front and rear ends of the lower surface 21. As shown in Figures 3 and 5, there are two recesses 22 on the lower surface 21 of the sliding door 3. Each wheel section 4 enters a recess 22. The wheel sections 4 are located approximately in the center of the lower surface 21 in the left-right direction. As shown in Figure 5, the wheel section 4 has an axle 30, a first wheel 31, and a second wheel 32.

[0034] The shaft 30 is cylindrical in shape and extends in a direction parallel to the left-right direction. The shaft 30 is rotatably supported within the recess 22. The lower end 33 of the shaft 30 is located slightly above the lower end 20 of the sliding door 3. The direction parallel to the left-right direction is an example of an intersecting direction.

[0035] The first wheel 31 is fixed to the right side of the axle 30. A portion of the first wheel 31 protrudes downward from the lower surface 21 of the sliding door 3. The first wheel 31 has a first tapered surface 34 and a first inner surface 35. The first tapered surface 34, like the first surface 14, is a surface facing to the right. The first tapered surface 34 is a surface that extends radially outward from the axle 30 while moving away from the first surface 14. The first inner surface 35 is located to the left of the first tapered surface 34 and is a surface that extends from the outer edge 36 of the first tapered surface 34 toward the axle 30. The first inner surface 35 is a surface facing to the left. The first inner surface 35 is a plane perpendicular to the center of the axle 30.

[0036] The second wheel 32 is fixed to the left side of the axle 30. The second wheel 32 is positioned to the left of the first wheel 31. The shape of the second wheel 32 is symmetrical to that of the second wheel 31 with respect to a plane that extends vertically and horizontally at the center of the sliding door 3 in the left-right direction.

[0037] The second wheel 32 has a second tapered surface 38 and a second inner surface 39. The second tapered surface 38, like the second surface 15, is a surface facing left. The second tapered surface 38 is a surface that extends radially outward from the shaft 30 while moving away from the second surface 15. The distance between the first tapered surface 34 and the second tapered surface 38 along the left-right direction decreases as you move radially outward from the shaft 30. The second inner surface 39 is located to the right of the second tapered surface 38 and is a surface that extends from the outer edge 40 of the second tapered surface 38 toward the shaft 30. The second inner surface 39 is a surface facing right and is parallel to the first inner surface 35. The second inner surface 39 is a plane opposite to the first inner surface 35.

[0038] [Airtight material 5] The airtight seal 5 has soundproofing and sealing functions. The airtight seal 5 is an elastic material that can be compressed and deformed, such as rubber or silicone. The airtight seal 5 has a rectangular shape that is longer in the front-to-back direction than in the left-to-right direction, and has a predetermined thickness in the up-to-down direction. The airtight seal 5 is located at the lower end 20 of the sliding door 3 and extends in the front-to-back direction along the lower surface 21 of the sliding door 3. The airtight seal 5 is located in the center of the sliding door 3 in the left-to-right direction. In other words, the airtight seal 5 is located below the axle 30 of the wheel section 4, between the first wheel 31 and the second wheel 32.

[0039] [Rail section 7] The rail section 7 guides the first wheel 31 and the second wheel 32 when the sliding door 3 is opened and closed. As shown in Figure 1, the rail section 7 is located on the lower surface of the opening 8. The rail section 7 extends in the front-rear direction along the sill 104. As shown in Figures 5 and 6, the rail section 7 has a first groove 43, a second groove 44, a support section 45, a first contact section 46, a second contact section 47, a first guide section 48, and a second guide section 49. The support section 45 is an example of a second member.

[0040] The first groove 43 is a groove that extends in the front-rear direction on the upper surface 108 of the sill 104. The first groove 43 is located slightly to the right of the center in the left-right direction of the upper surface 108. A part of the first wheel 31 is located within the first groove 43. The bottom 53 of the first groove 43 is located below the first wheel 31 in the closed position.

[0041] The second groove 44 is a groove that extends in the front-rear direction on the upper surface 108 of the sill 104 and is located to the left of the first groove 43. The second groove 44 is located slightly to the left of the center in the left-right direction of the upper surface 108. A part of the second wheel 32 is located within the second groove 44. The bottom 54 of the second groove 44 is located below the second wheel 32 in the closed position.

[0042] The support portion 45 presses the airtight seal 5 of the sliding door 3 in the closed position in the vertical direction. The upper surface 56 of the support portion 45 abuts against the airtight seal 5 when the sliding door 3 is in the closed position. The support portion 45 is located between the first groove 43 and the second groove 44 in the left-right direction. In other words, the support portion 45 is located in the center of the sill 104 in the left-right direction. The corners on the left and right sides of the upper surface 56 of the support portion 45 are chamfered. The upper surface 56 is at the same height as the floor surfaces 109 and 110 of the first room 100 and the second room 101.

[0043] The first contact portion 46 supports the first wheel 31. The first contact portion 46 is located to the right of the support portion 45. The first contact portion 46 is located on the upper surface 108 of the sill 104 and at the upper end of the first groove 43. The first tapered surface 34 contacts the first contact portion 46. As shown in Figure 6, the first contact portion 46 is located on the rear side of the rail portion 7 in the front-rear direction and slightly forward of the center in the front-rear direction. The first contact portion 46 extends in a straight line in the front-rear direction. The first contact portion 46 extends horizontally and in a straight line.

[0044] The second contact portion 47 supports the second wheel 32. The second contact portion 47 is located to the left of the support portion 45. The second contact portion 47 is located on the upper surface 108 of the sill 104 and at the upper end of the second groove 44. As shown in Figure 6, the second contact portion 47 is in the same position as the first contact portion 46 in the front-rear direction. The second contact portion 47 is parallel to the first contact portion 46. The second tapered surface 38 contacts the second contact portion 47. The distance between the first contact portion 46 and the second contact portion 47 along the left-right direction is constant. The distance between the first contact portion 46 and the second contact portion 47 along the left-right direction is shorter than the longest distance between the first tapered surface 34 and the second tapered surface 38 along the left-right direction.

[0045] The first guide section 48 guides the first wheel 31 downwards toward the closed position. The first guide section 48 is located to the right of the support section 45. The first guide section 48 is located at the front end of the rail section 7 and slightly behind the center in the front-rear direction. As shown in Figure 5, the first tapered surface 34 is in contact with the first guide section 48. The first guide section 48 is located on the upper surface 108 of the sill 104 and at the upper end of the first groove 43. The first guide section 48 is located in front of the first contact section 46 and is continuous with the front end of the first contact section 46. As shown in Figure 6, the first guide section 48 bends diagonally to the right from the front end of the first contact section 46 and extends in a straight line. The first guide section 48 moves further away from the support section 45 as it extends forward. When viewed from the left and right directions, the first guide section 48 extends horizontally and in a straight line.

[0046] The second guide section 49 guides the second wheel 32 downward as it moves towards the closed position. The second guide section 49 is located to the left of the support section 45. The second guide section 49 is in the same position as the first guide section 48 in the front-rear direction. As shown in Figure 5, the second tapered surface 38 is in contact with the second guide section 49. The second guide section 49 is located on the upper surface 108 of the sill 104 and at the upper end of the second groove 44. As shown in Figure 6, the second guide section 49 is located in front of the second contact section 47 and is continuous with the front end of the second contact section 47. The second guide section 49 bends diagonally to the left from the front end of the second contact section 47 and extends in a straight line. The second guide section 49 moves further away from the support section 45 as it moves forward. When viewed from the left-right direction, the second guide section 49 extends horizontally and in a straight line. The distance between the first guide section 48 and the second guide section 49 in the left-right direction increases as you move forward. The shortest distance between the first guide section 48 and the second guide section 49 in the left-right direction is approximately the same as the distance between the first contact section 46 and the second contact section 47 in the left-right direction. The longest distance between the first guide section 48 and the second guide section 49 in the left-right direction is longer than the distance between the first contact section 46 and the second contact section 47 in the left-right direction. However, the longest distance between the first guide section 48 and the second guide section 49 in the left-right direction does not have to be longer than the longest distance between the first tapered surface 34 and the second tapered surface 38 in the left-right direction.

[0047] [Operation of soundproof sliding door structure 1] The opening and closing operation of the sliding door 3 in this embodiment will now be described. As shown in Figures 5 and 7, when the sliding door 3 is in the open position, the first wheel 31 and the second wheel 32 are positioned on the first contact portion 46 and the second contact portion 47. At this time, the sliding door 3 is located to the right of the wall 2. The rear end of the sliding door 3 is in contact with the rear vertical frame 106.

[0048] Furthermore, as shown in Figure 5, the first wheel 31 and the second wheel 32 contact the first contact portion 46 and the second contact portion 47 at positions radially outward from the first tapered surface 34 and the second tapered surface 38. In this state, the airtight material 5 is spaced upward from the support portion 45. Also, as shown in Figure 4, the airtight material 13 located on the lower surface 16 of the protrusion 12 is spaced upward from the contact surface 19 of the receiving portion 6.

[0049] When the user grasps the handle 11 and pushes the sliding door 3 forward, the first wheel 31 and the second wheel 32 rotate on the first contact portion 46 and the second contact portion 47, causing the sliding door 3 to move forward from the closed position. The first wheel 31 and the second wheel 32 move forward horizontally and in a straight line along the first contact portion 46 and the second contact portion 47. Before the sliding door 3 reaches the closed position, the first wheel 31 moves from the first contact portion 46 to the first guide portion 48. Also, the second wheel 32 moves from the second contact portion 47 to the second guide portion 49.

[0050] The first wheel 31 and the second wheel 32, which move forward on the first guide section 48 and the second guide section 49, move downward as the distance along the left-right direction of the first guide section 48 and the second guide section 49 increases. As the sliding door 3 approaches the closed position, the positions where the first tapered surface 34 and the second tapered surface 38 contact the first guide section 48 and the second guide section 49, respectively, move radially inward. As the sliding door 3 moves downward, the airtight material 5 approaches the support section 45. Also, the airtight material 13 approaches the contact surface 19.

[0051] As shown in Figure 8, when the user pushes the sliding door 3 further forward, the front end of the sliding door 3 comes into contact with the front vertical frame 105, and the sliding door 3 is placed in the closed position. As shown in Figure 9, when the sliding door 3 is in the closed position, the first wheel 31 and the second wheel 32 come into contact with the first guide portion 48 and the second guide portion 49 at radially inward positions of the first tapered surface 34 and the second tapered surface 38. At this time, the airtight material 5 is sandwiched between the sliding door 3 and the support portion 45 and becomes compressed and deformed. As a result, sound and air are blocked in the gap between the sliding door 3 and the sill 104. Also, as shown in Figure 10, the airtight material 13 is sandwiched between the lower surface 16 of the projection 12 and the contact surface 19 of the receiving portion 6 and becomes compressed and deformed, so sound and air are blocked in the gap between the sliding door 3 and the lintel 103. Therefore, soundproofing and sealing functions are performed above and below the sliding door 3.

[0052] When the user pushes the closed sliding door 3 backward, the sliding door 3 moves backward. At this time, the first wheel 31 and the second wheel 32 move upward as the distance along the left-right direction of the first guide portion 48 and the second guide portion 49 decreases. As the first wheel 31 and the second wheel 32, located on the first guide portion 48 and the second guide portion 49, approach the first contact portion 46 and the second contact portion 47, the positions where the first tapered surface 34 and the second tapered surface 38 contact the first guide portion 48 and the second guide portion 49, respectively, move radially outward. As the sliding door 3 moves upward, the airtight material 5 moves away from the support portion 45. Also, the airtight material 13 moves away from the contact surface 19.

[0053] As shown in Figure 7, when the user pushes the sliding door 3 further backward, the rear end of the sliding door 3 comes into contact with the rear vertical frame 106, and the sliding door 3 is placed in the open position. As shown in Figure 5, when the sliding door 3 is in the open position, the first wheel 31 and the second wheel 32 come into contact with the first contact portion 46 and the second contact portion 47 at radially outward positions of the first tapered surface 34 and the second tapered surface 38. At this time, the airtight seal 5 returns to its restored state, separated from the support portion 45. Thus, when the user opens and closes the sliding door 3, they only need to push it forward or backward, and there is no need to operate it in the vertical or horizontal directions, as with a typical sliding door.

[0054] [Effects and benefits of soundproof sliding door structure 1] When the sliding door 3 moves to the closed position, the first tapered surface 34 and the second tapered surface 38 slide downward along the first guide section 48 and the second guide section 49. Then, when the sliding door 3 moves to the closed position, the airtight seal 5 is sandwiched between the sliding door 3 and the support section 45. In other words, when the sliding door 3 moves from the open position to the closed position, it moves along a horizontal straight line, and then moves diagonally downward along that straight line. Therefore, the user only needs to apply load in a straight line when opening and closing the sliding door 3, and the operation is as simple as that of a typical sliding door. Also, since the sliding door 3 does not move in the left-right direction, there is no need to take up a large dimension for installing the rail section 7 in the left-right direction, and a compact soundproof sliding door structure 1 can be realized. Furthermore, since the airtight seal 5 can be kept away from the support section 45 except when it is in the closed position, the resistance when opening and closing the door can be reduced. Furthermore, the reduced friction between the airtight material 5 and the support part 45 suppresses the deterioration of the airtight material 5, resulting in high airtightness and stable sound insulation.

[0055] The presence of the first groove 43 and the second groove 44 ensures sufficient space for the radially outer edges 36 and 40 of the first tapered surface 34 and the second tapered surface 38 to move when the first wheel 31 and the second wheel 32 move downward.

[0056] The first tapered surface 34 is oriented in the same direction as the first surface 14 of the sliding door 3 in the left-right direction, and moves away from the first surface 14 as it extends radially outward. Similarly, the second tapered surface 38 is oriented in the same direction as the second surface 15, and moves away from the second surface 15 as it extends radially outward. Furthermore, the first guide portion 48 and the second guide portion 49 of the rail portion 7 are spaced apart from each other in the left-right direction as they move forward. As a result, when the sliding door 3 moves to the closed position, the wheel portion 4 moves downward as the first tapered surface 34 and the second tapered surface 38 are sandwiched between the first guide portion 48 and the second guide portion 49. At this time, the axle 30 of the wheel portion 4 is less susceptible to bending loads and is less likely to be damaged.

[0057] Because the airtight seal 5 is located in the center of the sliding door 3 in the left-right direction, the sliding door 3 is supported in the center when closed, ensuring a stable posture.

[0058] When the sliding door 3 is in the closed position, the airtight seal 13 is sandwiched between the protrusion 12 and the contact surface 19, thus sealing the space between the sliding door 3 and the receiving part 6 with the airtight seal 13. At this time, the airtight seal 13 is sealed by the weight of the sliding door 3, resulting in high airtightness and stable sound insulation.

[0059] Since the upper surface 56 of the support portion 45 is at the same height as the floor surfaces 109 and 110 of the first room 100 and the second room 101, the support portion 45 does not protrude from the floor surfaces 109 and 110 when the sliding door 3 is in the open position. This makes it possible to realize a barrier-free soundproof sliding door structure 1.

[0060] [Example 1] In the soundproof sliding door structure 1 of the above embodiment, the first tapered surface 34, like the first surface 14, is a surface facing to the right, extending radially outward from the axis 30 and moving away from the first surface 14. Similarly, the second tapered surface 38, like the second surface 15, is a surface facing to the left, extending radially outward from the axis 30 and moving away from the second surface 15. In the above embodiment, the above case was used as an example for explanation, but the configuration is not limited to this. In the soundproof sliding door structure 1, as shown in Figure 11, the first tapered surface 34A may extend radially outward from the axis 30 and approach the first surface 14. Also, the second tapered surface 38A may extend radially outward from the axis 30 and approach the second surface 15. Furthermore, as shown in Figure 12, the first guide portion 48A and the second guide portion 49A of the rail portion 7A may be located on the support portion 45A, and the distance between them may decrease as the rail approaches the closed position. A detailed explanation follows below.

[0061] The soundproof sliding door structure 1 is the same as the embodiment in terms of the configuration of the wall 2, sliding door 3, airtight material 5, and receiving part 6, excluding the wheel section 4A and rail section 7A, so a description is omitted. As shown in Figure 11, the wheel section 4A has an axle 30, a first wheel 31A, and a second wheel 32A.

[0062] The first wheel 31A is fixed to the right side of the axle 30. A portion of the first wheel 31A protrudes downward from the lower surface 21 of the sliding door 3. The first wheel 31A has a first tapered surface 34A and a first outer surface 60A. The first tapered surface 34A, like the second surface 15, is a surface facing to the left. The first tapered surface 34A is a surface that extends radially outward from the axle 30 while approaching the first surface 14. The first outer surface 60A is located to the right of the first tapered surface 34A and is a surface that extends from the outer edge 36A of the first tapered surface 34A towards the axle 30. The first outer surface 60A is a surface facing to the right. The first outer surface 60A is a plane perpendicular to the center of the axle 30.

[0063] The second wheel 32A is fixed to the left side of the axle 30. The second wheel 32A is positioned to the left of the first wheel 31A. The shape of the second wheel 32A is symmetrical to that of the first wheel 31A with respect to a plane that extends vertically and horizontally at the center of the sliding door 3 in the left-right direction.

[0064] The second wheel 32A has a second tapered surface 38A and a second outer surface 61A. The second tapered surface 38A, like the first surface 14, is a surface facing to the right. The second tapered surface 38A is a surface that extends radially outward from the shaft 30 while approaching the second surface 15. The distance between the first tapered surface 34A and the second tapered surface 38A along the left-right direction increases as you move radially outward from the shaft 30. The second outer surface 61A is located to the left of the second tapered surface 38A and is a surface that extends from the outer edge 40A of the second tapered surface 38A towards the shaft 30. The second outer surface 61A is a surface facing to the left. The second outer surface 61A is a plane perpendicular to the center of the shaft 30 and is parallel to the first outer surface 60A.

[0065] [Rail section 7A] The rail section 7A guides the first wheel 31A and the second wheel 32A when the sliding door 3 is opened and closed. As shown in Figure 12, the rail section 7A extends in the front-rear direction on the sill 104A. As shown in Figures 11 and 12, the rail section 7A has a first groove 43A, a second groove 44A, a support section 45A, a first contact section 46A, a second contact section 47A, a first guide section 48A, and a second guide section 49A.

[0066] The first groove 43A is a groove that extends in the front-rear direction on the upper surface 108A of the sill 104A. The first groove 43A is located slightly to the right of the center in the left-right direction of the upper surface 108A. A part of the first wheel 31A is located within the first groove 43A. The bottom 53A of the first groove 43A is located below the first wheel 31A in the closed position.

[0067] The second groove 44A is a groove that extends in the front-rear direction on the upper surface 108A of the sill 104A and is aligned with the first groove 43A. The second groove 44A is located slightly to the left of the center in the left-right direction of the upper surface 108A. A part of the second wheel 32A is located within the second groove 44A. The bottom 54A of the second groove 44A is located below the second wheel 32A in the closed position.

[0068] As shown in Figure 13, the support portion 45A presses the airtight seal 5 of the sliding door 3 in the closed position in the vertical direction. The upper surface 56A of the support portion 45A abuts the airtight seal 5 when the sliding door 3 is in the closed position. The support portion 45A is located between the first groove 43A and the second groove 44A in the left-right direction and is located in the center of the sill 104A in the left-right direction. The support portion 45A has corners on the left and right sides of its upper surface 56A. The upper surface 56A is at the same height as the floor surfaces of the first room 100 and the second room 101.

[0069] As shown in Figures 11 and 12, the first contact portion 46A is located on the upper surface 56A of the support portion 45A and at the upper end of the first groove 43A, that is, at the right corner of the support portion 45A. The first tapered surface 34A abuts against the first contact portion 46A. As shown in Figure 12, the first contact portion 46A is located on the rear side in the front-rear direction of the rail portion 7A and slightly forward of the center in the front-rear direction. The first contact portion 46A extends in a straight line in the front-rear direction. When viewed from the left and right directions, the first contact portion 46A extends horizontally and in a straight line. The height of the first contact portion 46A is the same as the height of the upper surface 108A of the sill 104A.

[0070] The first guide portion 48A guides the first wheel 31A downward as it moves toward the closed position. As shown in Figure 12, the first guide portion 48A is located in front of the first contact portion 46A. The first guide portion 48A is located on the upper surface 56A of the support portion 45A and the upper end of the first groove 43A, that is, at the right corner of the support portion 45A. The first guide portion 48A is located at the front end of the rail portion 7A and slightly behind the center in the front-rear direction. The first tapered surface 34A is in contact with the first guide portion 48A. The first guide portion 48A is continuous with the front end of the first contact portion 46A. As the first guide portion 48A moves toward the front, it approaches the center of the support portion 45A in the left-right direction. When viewed from the left-right direction, the first guide portion 48A extends horizontally and in a straight line.

[0071] The second contact portion 47A is located on the upper surface 56A of the support portion 45A and at the upper end of the second groove 44A, that is, at the left corner of the support portion 45A. The second tapered surface 38A abuts against the second contact portion 47A. The second contact portion 47A is located to the left of the first contact portion 46A. The second contact portion 47A is in the same position as the first contact portion 46A in the front-rear direction. The second contact portion 47A is parallel to the first contact portion 46A. When viewed from the left-right direction, the second contact portion 47A extends horizontally and in a straight line and overlaps with the first contact portion 46A. The distance between the first contact portion 46A and the second contact portion 47A along the left-right direction is constant. The distance between the first contact portion 46A and the second contact portion 47A in the left-right direction is longer than the shortest distance between the first tapered surface 34A and the second tapered surface 38A in the left-right direction.

[0072] The second guide portion 49A guides the second wheel 32A downward as it moves towards the closed position. The second guide portion 49A is located in front of the second contact portion 47A. When viewed from the front-rear direction, the second guide portion 49A is located on the upper surface 56A of the support portion 45A and at the upper end of the second groove 44A, that is, at the left corner of the support portion 45A. The second guide portion 49A is located to the left of the first guide portion 48A. The second tapered surface 38A contacts the second guide portion 49A. The second guide portion 49A is continuous with the front end of the second contact portion 47A. As the second guide portion 49A moves forward, it approaches the center of the support portion 45A in the left-right direction. In other words, the distance between the first guide portion 48A and the second guide portion 49A in the left-right direction decreases as it moves forward. When viewed from the left or right, the second guide portion 49A extends horizontally and in a straight line. The longest distance in the left-right direction between the first guide portion 48A and the second guide portion 49A is approximately the same as the distance in the left-right direction between the first contact portion 46A and the second contact portion 47A. The shortest distance in the left-right direction between the first guide portion 48A and the second guide portion 49A is shorter than the distance in the left-right direction between the first contact portion 46A and the second contact portion 47A. Note that the shortest distance in the left-right direction between the first guide portion 48A and the second guide portion 49A does not have to be shorter than the shortest distance in the left-right direction between the first tapered surface 34 and the second tapered surface 38.

[0073] [Operation of soundproof sliding door structure 1 according to modified example 1] The opening and closing operation of the sliding door 3 of the soundproof sliding door structure 1 according to Modification 1 will be described below. When the sliding door 3 is in the open position, the first wheel 31A and the second wheel 32A are located on the first contact portion 46A and the second contact portion 47A. At this time, as shown in Figure 11, the first wheel 31A and the second wheel 32A are in contact with the first contact portion 46A and the second contact portion 47A at positions radially outward from the first tapered surface 34A and the second tapered surface 38A. In this state, the airtight material 5 is spaced upward from the support portion 45A.

[0074] When the user grasps the handle 11 and pushes the sliding door 3 forward, the first wheel 31A and the second wheel 32A rotate on the first contact portion 46A and the second contact portion 47A, causing the sliding door 3 to move forward from the closed position. The first wheel 31A and the second wheel 32A move forward horizontally and in a straight line along the first contact portion 46A and the second contact portion 47A. Before the sliding door 3 reaches the closed position, the first wheel 31A and the second wheel 32A, having moved forward, move from the first contact portion 46A and the second contact portion 47A to the first guide portion 48A and the second guide portion 49A.

[0075] The first wheel 31A and the second wheel 32A, which move forward on the first guide section 48A and the second guide section 49A, move downward as the distance along the left-right direction of the first guide section 48A and the second guide section 49A decreases. As the sliding door 3 approaches the closed position, the positions where the first tapered surface 34A and the second tapered surface 38A contact the first guide section 48A and the second guide section 49A, respectively, move radially inward. As the sliding door 3 moves downward, the airtight material 5 approaches the support section 45A.

[0076] When the user pushes the sliding door 3 further forward, the front end of the sliding door 3 comes into contact with the front vertical frame 105, and the sliding door 3 is placed in the closed position. As shown in Figure 13, when the sliding door 3 is in the closed position, the first wheel 31A and the second wheel 32A come into contact with the first contact portion 46A and the second contact portion 47A at positions radially inward of the first tapered surface 34A and the second tapered surface 38A. At this time, the airtight material 5 is sandwiched between the sliding door 3 and the support portion 45A and becomes compressed and deformed. As a result, sound and air are blocked in the gap between the sliding door 3 and the sill 104A.

[0077] When the user pushes the closed sliding door 3 backward, the sliding door 3 moves backward. At this time, the first wheel 31A and the second wheel 32A move upward as the distance along the left-right direction of the first guide portion 48A and the second guide portion 49A increases. As the first wheel 31A and the second wheel 32A, located on the first guide portion 48A and the second guide portion 49A, approach the first contact portion 46A and the second contact portion 47A, the positions where the first tapered surface 34A and the second tapered surface 38A contact the first guide portion 48A and the second guide portion 49A, respectively, move radially outward. As the sliding door 3 moves upward, the airtight material 5 moves away from the support portion 45A.

[0078] When the user pushes the sliding door 3 further backward, the rear end of the sliding door 3 comes into contact with the rear vertical frame 106, and the sliding door 3 is placed in the open position. As shown in Figure 13, when the sliding door 3 is in the open position, the first wheel 31A and the second wheel 32A come into contact with the first contact portion 46A and the second contact portion 47A at radially inward positions of the first tapered surface 34A and the second tapered surface 38A. At this time, the airtight seal 5 returns to its restored state, separated from the support portion 45A. Thus, when the user opens and closes the sliding door 3, they only need to push it backward and do not need to operate it in the vertical or horizontal directions.

[0079] Since the first wheel 31A and the second wheel 32A are supported by the support part 45A, it is possible to make the outer dimensions of the first groove 43A and the second groove 44A of the sill 104A relatively small in the left-right direction. Therefore, a more compact soundproof sliding door structure 1 can be realized in the left-right direction.

[0080] [Differentiation 2] In the soundproof sliding door structure 1 of the above embodiment, the example given was that the airtight material 5 located at the lower end 20 of the sliding door 3 is an elastic material that can be compressed and deformed, such as rubber or silicone, but the structure is not limited to this configuration. The airtight material 5B may, for example, have a magnetic material 64B, as shown in Figures 14(a) and 14(b).

[0081] Specifically, the airtight seal 5B extends in the front-to-back direction along the lower surface 21B of the sliding door 3 and is located in the center in the left-to-right direction. The magnetic material 64B is a sheet-shaped magnet. When viewed from above, the magnetic material 64B has the same elongated rectangular shape in the front-to-back direction as the airtight seal 5B. The magnetic material 64B has a predetermined thickness and is located above the airtight seal 5B. The airtight seal 5B is fixed to the lower surface 21B of the sliding door 3. The support part 45B is a magnetic material such as iron to which the magnetic material 64B is magnetically attached.

[0082] As shown in Figure 14(a), when the sliding door 3 is in the open position, the airtight seal 5B is separated upward from the support part 45B. When the user moves the sliding door 3 forward, the airtight seal 5B moves closer to the support part 45B. When the user moves the sliding door 3 to the closed position, as shown in Figure 14(b), the airtight seal 5B magnetically attaches to the support part 45B. At this time, the airtight seal 5B is sandwiched between the magnetic material 64B and the support part 45B.

[0083] When the sliding door 3 is moved to the closed position, the airtight seal 5B magnetically attaches to the support part 45B, ensuring a secure seal between the sliding door 3 and the support part 45B. This ensures reliable sound insulation and airtight sealing between the sliding door 3 and the sill 104.

[0084] [Difference 3] In the above-described embodiment of the soundproof sliding door structure 1, the example given was that the airtight material 5 is located between the first wheel 31 and the second wheel 32 in the left-right direction, but the configuration is not limited to this. In the soundproof sliding door structure 1, the airtight material 5C may be located outside the first wheel 31 and the second wheel 32 in the left-right direction.

[0085] Specifically, the airtight seal 5C is located on the left and right sides of the lower surface 21 of the sliding door 3. The airtight seal 5C extends in the front-to-back direction along the lower surface 21 of the sliding door 3. The airtight seal 5C has a rectangular shape that is longer in the front-to-back direction than in the left-to-right direction, and has a predetermined thickness in the vertical direction.

[0086] As shown in Figure 15(a), the airtight seals 5C located on the left and right sides of the lower surface 21C are spaced apart from the left and right upper surfaces 108C of the sill 104C when the door is in the open position. When the sliding door 3 is in the closed position, as shown in Figure 15(b), the airtight seals 5C are in contact with the sill 104 at an outward position in the left-right direction from the first groove 43 and the second groove 44 on the upper surface 108C. The sliding door 3 is stably supported on the sill 104 on both the left and right sides.

[0087] [Other variations] In the embodiments described above, the soundproof sliding door structure 1 was explained using the example of its installation on a wall 2 separating the first room 100 and the second room 101, but the configuration is not limited to this. The soundproof sliding door structure 1 may also be installed on a wall separating a living room from an area that is not a living room.

[0088] In the embodiments described above, the case in which the soundproof sliding door structure 1 consists of one sliding door 3 was used as an example, but the configuration is not limited to this. The number of sliding doors 3 in the soundproof sliding door structure 1 may be two or more. In this case, the soundproof sliding door structure 1 may have additional airtight material in the gaps between the sliding doors 3 to seal the gaps when they are in the closed position.

[0089] In the above-described embodiment, the sliding door 3 is located to the right of the wall 2, but a sealing material may be positioned between the sliding door 3 and the wall to seal the gap. The sealing material may, for example, protrude toward the wall 2 from the rear side of the door body 10 and be in contact with the wall 2. Alternatively, the sealing material may protrude toward the door body 10 from the front side of the wall 2 and be in contact with the door body 10 in the closed position.

[0090] In the above-described embodiment, the case in which the lower end 33 of the shaft 30 is located slightly above the lower end 20 of the sliding door 3 was used as an example, but the configuration is not limited to this. The lower end 33 of the shaft 30 may be at the same position as the lower end 20 of the sliding door 3.

[0091] In the above-described embodiment, the case in which the shaft 30 is rotatably supported within the recess 22 was given as an example, but the configuration is not limited to this. The shaft 30 may be rotatably supported by a fitting fixed or fitted within the recess 22.

[0092] In the above-described embodiment, the case in which the airtight material 5 and the airtight material 13 are elastic members that can be compressed and deformed, such as rubber or silicone, was explained as an example, but the configuration is not limited to this. The airtight material 5 and the airtight material 13 can be any material that can block sound and air.

[0093] In the above-described modification 2, the case in which the magnetic material 64B is a sheet-shaped magnet was used as an example, but the configuration is not limited to this. The magnetic material 64B may be, for example, multiple magnets embedded in the airtight material 5C.

[0094] In the above-described modification 3, the example given was that the airtight seal 5C is located at two locations, the front and rear, at the lower end 20 of the sliding door 3, but the configuration is not limited to this. The airtight seal 5C may be located only at the front or only at the rear of the lower end 20 of the sliding door 3.

[0095] [Note 1] A wall having an opening, A sliding door having a first surface and a second surface that close the above-mentioned opening, A wheel portion that protrudes downward from at least a part of the lower surface of the sliding door, Located on the lower surface of the above-mentioned opening, the rail portion guides the wheel portion in the opening and closing direction, It comprises a first member located at the lower end of the sliding door, The above wheel section is, An axis extending in a direction that intersects with the opening and closing direction of the above-mentioned sliding door, The first wheel rotates around the above axis, It has a second wheel that rotates around the above axis, The first wheel has a first tapered surface that extends radially outward and moves away from the first surface of the sliding door. The second wheel has a second tapered surface that extends radially outward and moves away from the second surface of the sliding door. The above rail section is, A first contact portion that contacts the first tapered surface of the first wheel and supports the first wheel, A second contact portion that contacts the second tapered surface of the second wheel and supports the second wheel, As the sliding door moves towards the closed position, the first guide section guides the first wheel downwards, As the sliding door moves towards the closed position, a second guide unit guides the second wheel downwards, A soundproof sliding door structure comprising a second member that abuts against the first member when the sliding door is in the closed position.

[0096] [Note 2] The rail portion described above has a first groove and a second groove extending in the opening and closing direction, The above-mentioned first contact portion and the above-mentioned first guide portion are the upper end of the above-mentioned first groove, The above-mentioned second contact portion and the above-mentioned second guide portion are the upper end of the above-mentioned second recessed groove, which is the soundproof sliding door structure described in Appendix 1.

[0097] [Note 3] The first surface and the first tapered surface are oriented in the same direction. The soundproof sliding door structure described in Appendix 1 or 2, wherein the second surface and the second tapered surface are oriented in the same direction.

[0098] [Note 4] The first member described above is a soundproof sliding door structure according to any one of the appendices 1 to 3, located between the first wheel and the second wheel in the above-mentioned intersecting direction.

[0099] [Note 5] The above opening is further provided with a receiving portion located at the top of it. The above sliding door has a projection that extends from the upper end in the direction of the intersection, and a third member located on the lower surface of the projection. The receiving portion has a contact surface located below the third member. The above-mentioned third member is a soundproof sliding door structure according to any one of the appendices 1 to 4, which contacts the above-mentioned contact surface when the sliding door is in the closed position.

[0100] [Note 6] The first member described above has a magnetic material, and the second member is magnetically attached to the magnetic material, as described in any of Appendix 1 to 5.

[0101] [Note 7] The upper surface of the second member is at the same height as the floor of the room partitioned by the wall, as described in any of the notes 1 to 6 for the soundproof sliding door structure. [Explanation of symbols]

[0102] 1. Soundproof sliding door structure 2...wall 3. Sliding door 4, 4A...Wheel section 5, 5B, 5C... Airtight material (first component) 6. Receiving part 7, 7A... Rail section 8...Aperture 12. Protrusion 13. Airtight material (third component) 14...Front page 15...2nd page 16...Lower surface of projection 12 19...Abutting surface 21, 21B, 21C... Bottom of sliding door 3 20...Bottom edge of sliding door 30...axis 31, 31A...1st wheel 32, 32A...2nd wheel 34, 34A...First tapered surface 38, 38A...Second tapered surface 43, 43A...First recessed groove 44, 44A...Second groove 45, 45A, 45B... Support section (second member) 46, 46A...1st contact part 47, 47A...Second contact part 48, 48A...1st guide section 49, 49A...Second guide section 56, 56A... Upper surface of support parts 45, 45A 64B...Magnetic material 109, 110... Floor surface

Claims

1. A wall having an opening, A sliding door having a first surface and a second surface that close the above-mentioned opening, A wheel portion that protrudes downward from at least a part of the lower surface of the sliding door, Located on the lower surface of the above-mentioned opening, the rail portion guides the wheel portion in the opening and closing direction, It comprises a first member located at the lower end of the sliding door, The above wheel section is, An axis extending in a direction that intersects with the opening and closing direction of the above-mentioned sliding door, The first wheel rotates around the above axis, It has a second wheel that rotates around the above axis, The first wheel has a first tapered surface that extends radially outward and moves away from the first surface of the sliding door. The second wheel has a second tapered surface that extends radially outward and moves away from the second surface of the sliding door. The above rail section is, A first contact portion that contacts the first tapered surface of the first wheel and supports the first wheel, A second contact portion that contacts the second tapered surface of the second wheel and supports the second wheel, As the sliding door moves towards the closed position, the first guide part guides the first wheel downward, A second guide section guides the second wheel downward as the sliding door moves towards the closed position, A soundproof sliding door structure comprising a second member that abuts against the first member when the sliding door is in the closed position.

2. The rail portion described above has a first groove and a second groove extending in the opening and closing direction, The first contact portion and the first guide portion are the upper ends of the first groove, The soundproof sliding door structure according to claim 1, wherein the second contact portion and the second guide portion are the upper end of the second groove.

3. The first surface and the first tapered surface are oriented in the same direction. The soundproof sliding door structure according to claim 1 or 2, wherein the second surface and the second tapered surface are oriented in the same direction.

4. The soundproof sliding door structure according to claim 1 or 2, wherein the first member is located between the first wheel and the second wheel in the intersecting direction.

5. The above opening is further provided with a receiving portion located at the top of it. The above sliding door has a projection that extends from the upper end in the direction of the intersection, and a third member located on the lower surface of the projection. The receiving portion has a contact surface located below the third member. The soundproof sliding door structure according to claim 1 or 2, wherein the third member abuts against the contact surface when the sliding door is in the closed position.

6. The first member described above has a magnetic material, The soundproof sliding door structure according to claim 1 or 2, wherein the second member is magnetically attached to the magnetic material.

7. The soundproof sliding door structure according to claim 1 or 2, wherein the upper surface of the second member is at the same height as the floor surface of the living room partitioned by the wall.

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