Cushioning material and door opening / closing device

Abstract

To provide a cushioning material and a door opening / closing device which can be easily attached to the edge of a door body or an opening without providing a dedicated attachment structure thereto and can stably support a cushioning function part.SOLUTION: A cushioning material includes a base block 21 and a cushioning block 22. The base block 21 is fixed to an outer end surface 10Se of a door body or opening in the direction of door body movement. The cushioning block 22 is attached to the base block 21 so as to be detachable from the direction of door body movement. The cushioning block 22 includes a detachable base part 30 and a cushioning function part 31. The detachable base part 30 is attached to the base block 21 so as to be detachable from the direction of movement. The cushioning function part 31 protrudes from the detachable base part 30 in the side direction of the door body or opening.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a cushioning material that is attached to a sliding door type door opening and closing device, and to a door opening and closing device that employs the cushioning material. [Background technology]

[0002] 2. Description of the Related Art Automatic opening and closing doors are known, in which a door (door body) that moves horizontally by the power of a motor opens and closes an opening in a building or the like (see, for example, Patent Document 1).

[0003] The automatic door (door body opening and closing device) described in Patent Document 1 has an opening on the building side that is formed by a fixed frame such as a mullion or door pocket. The edge in the direction of movement of the door (door body), which moves horizontally, is formed by a frame. A cushioning material is attached to the fixed frame on the building side to prevent an object, such as a person's finger, from coming into strong contact with the corners of the fixed frame when the door moves with the object in contact with the side of the door.

[0004] The cushioning material comprises an adjustable mounting member (base block) fixed to the outer end face of the fixed frame on the building side, and a cushioning section (cushioning function section) detachably attached to the face of the adjustable mounting member facing the side face of the door. The cushioning section (cushioning function section) is made of an elastically deformable hollow member, and the entire section protrudes in the direction of the side face of the door.

[0005] With this configuration, for example, when the door is opened or closed with an object such as a person's finger in contact with the side of the door, the cushioning section (cushioning function section) comes into contact with the object, preventing the object from coming into contact with the corners of the fixed frame and mitigating the contact impact.

[0006] Furthermore, this cushioning material can be attached by fixing an adjustable mounting member (base block) to the end face of the fixed frame with screws (bolts), adhesive, etc., and the cushioning section (cushioning function section) can be detachably attached to the fixed adjustable mounting member (base block). Therefore, this cushioning material does not require a dedicated structure for fixing the cushioning section (cushioning function section) to the fixed frame, and can be easily installed in existing structures. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2011-26821 A Summary of the Invention [Problem to be solved by the invention]

[0008] However, the above-mentioned cushioning material is attached to an adjustable mounting member (base block) fixed to the outer end face of the fixed frame from the side facing the door, with the elastically deformable cushioning section (cushioning section). Therefore, if an object comes into contact with the cushioning section (cushioning section) with a large force when the door is opened or closed, a prying force will act on the cushioning section, and there is a concern that the cushioning section will become unstable.

[0009] Here, as a method for stabilizing the holding of the shock-absorbing part (shock-absorbing function part) by the adjustable mounting member (base block), it is possible to consider widening the width of the adjustable mounting member in the direction of door movement. However, in this case, the adjustable mounting member (base block) protrudes significantly from the outer end face of the fixed frame in the direction of door movement, and this protruding part is likely to limit the usable area of ​​the door opening and closing part and detract from the appearance.

[0010] The present invention provides a cushioning material and a door opening and closing device that can be easily attached to the edge of a door body or an opening without providing a dedicated mounting structure and can stably support a cushioning function part. [Means for solving the problem]

[0011] A cushioning material according to one aspect of the present invention is attached to at least one of the edges of a sliding door body that moves to open and close an opening and the edges of the opening that overlap with the door body in a fully closed state, and comprises a base block fixed to an end face of the edge perpendicular to the direction of movement, and a cushioning block removably attached to the base block, wherein the cushioning block comprises a detachable base portion that is detachably attached to the base block from the direction of movement, and a cushioning function portion that protrudes from the detachable base portion in the direction of the door body or the opening.

[0012] In this embodiment of the cushioning material, the base block is fixed to the end face of a door body or an opening, and the detachable base part of the cushioning block is attached to the base block from the direction in which the door body moves. When the detachable base part is attached to the base block in this way, when an object such as a person's finger comes into contact with the side of the door body or the peripheral side of the opening and the door body moves while the object is in contact with the side of the door body or the peripheral side of the opening, the object comes into contact with the cushioning function part. This makes it possible to prevent the object from coming into strong contact with the edge of the door body or the opening, and to mitigate the contact impact with the cushioning function part. The buffer block with the buffer function part is detachable from the base block fixed to the edge of the door body or opening, so the buffer block can be attached to the base lock after the base block is fixed to the end face of the door body or the edge of the opening by screwing, gluing, etc. Therefore, there is no need to provide a special structure for attaching the buffer function part to the door body or the edge of the opening. Furthermore, the cushioning material of this embodiment is structured so that the cushioning block is attached to the base block fixed to the edge of the door body or the opening in a manner that allows it to be detached from the direction of movement of the door body. Therefore, by sufficiently widening the width of the base block or the detachable base part in the thickness direction of the door body, the cushioning function part of the cushioning block can be supported with high support rigidity. Therefore, even if a large force acts on the cushioning function part of the cushioning block from an object when the door body is opened or closed, the cushioning function part is unlikely to shift position. Furthermore, even if the width of the base block or the detachable base part in the thickness direction of the door body is widened, the operation of the door body in the opening and closing direction is unlikely to be restricted, and the appearance when viewed from the front is unlikely to be impaired.

[0013] The base block is provided with a first engagement portion, and the detachable base portion is provided with a second engagement portion that comes into contact with the first engagement portion to prevent it from coming loose, and the first engagement portion and the second engagement portion may extend in the vertical direction of the edge portion and be formed with an approximately constant cross-sectional shape throughout the vertical direction.

[0014] In this case, the first engagement portion of the base block and the second engagement portion of the detachable base portion extend vertically along the edge of the door body or opening, so that the detachable base portion can be firmly supported by the base block over a wide range above and below the edge. Also, because the first engagement portion and the second engagement portion are each formed to have a constant cross-sectional shape in the vertical direction, the base block and the detachable base portion can be easily formed by extrusion molding or the like.

[0015] The first engagement portion and the second engagement portion may have claw portions that mesh with each other.

[0016] In this case, since the first engaging portion and the second engaging portion are configured to have claw portions that mesh with each other, The engagement of the claws reliably prevents the detachable base part from coming off the base block. In addition, the first and second engagement parts can be engaged by flexing and deforming the claws and their neighboring parts, thereby making it easy to attach the detachable base part to the base block.

[0017] The cushioning function portion may be made of a material softer than the detachable base portion.

[0018] In this case, the detachable base portion is firmly supported by the base block, and when an object comes into contact with the cushioning function portion, the shock acting on the object can be sufficiently absorbed by the cushioning function portion.

[0019] The base block is fixed to the end face with screws, and the detachable base portion comprises a covering wall covering the outside of the base block, and a reinforcing rib protruding from the covering wall to the side facing the base block and extending along the vertical direction, and a groove extending along the vertical direction may be formed at the base of the protruding direction of the reinforcing rib.

[0020] In this case, the cover wall of the detachable base part covers the outside of the base block, making the base block invisible from the outside, improving the appearance quality. In addition, the cover wall is reinforced by the reinforcing ribs, which increases the rigidity of the entire detachable base part. Also, for example, when the reinforcing rib is disposed at a position facing the head of the screw for fixing the base block, a pair of cuts are made in the reinforcing rib on the buffer block side along the protruding direction so as to match the position of the head of the screw on the base block side before attaching the buffer block to the base block. Then, the area between the pair of cuts of the reinforcing rib is bent starting from the base of the reinforcing rib. At this time, since a groove is provided in the base of the reinforcing rib, the base is easily broken by bending the reinforcing rib. As a result, the area between the pair of cuts of the reinforcing rib is cut out, and a cutout is formed at the desired position. Therefore, when this configuration is adopted, a cutout can be easily formed at the appropriate position of the reinforcing rib.

[0021] The detachable base portion may include a cover wall that covers the outside of the base block, and the buffer function portion may form a hollow cross section together with the cover wall.

[0022] In this case, when an object comes into contact with the wall of the hollow cross section of the cushioning function section, the intermediate cross section elastically deforms with an appropriate reaction force, making it possible to protect the object while absorbing the contact shock of the object.

[0023] It is preferable that a portion of the cover wall forming the hollow cross section has a curved shape that is convex toward the same direction as the projection direction of the buffer function portion.

[0024] In this case, when an object comes into contact with the wall of the hollow cross section of the cushioning function part, depending on the manner in which the object comes into contact, the wall of the cushioning function part may be pressed against a part of the covering wall. In this case, since the part of the covering wall has a curved shape that is convex in the same direction as the protruding direction of the cushioning function part, the pressing force received from the wall of the cushioning function part can be smoothly received by the curved surface. Therefore, when this configuration is adopted, the contact impact of the object can be further mitigated.

[0025] At least a part of the buffer function portion may protrude outward beyond the end of the end surface to which the base block is fixed.

[0026] In this case, when an object comes into contact with the wall of the hollow cross section of the buffer function part and a load is applied to the buffer function part, a part of the wall of the hollow cross section is pressed against the corner part of the edge of the door body or the opening (the end part of the outer end face of the edge part that faces the edge part of the other side). This makes the buffer function part more likely to bend and deform from the contact point with the corner part. Therefore, when this configuration is adopted, the contact impact of the object can be more mitigated.

[0027] The cushioning function portion may be configured so that a thickness in the vicinity of a connection portion with the covering wall becomes thinner toward the covering wall side.

[0028] In this case, when an object comes into contact with the wall of the hollow cross section of the cushioning function part and a load is applied to the cushioning function part, the cushioning function part is likely to bend and deform around the vicinity of the connection part with the covering wall. Therefore, when this configuration is adopted, the contact impact of the object can be more effectively mitigated.

[0029] A door opening and closing device according to one aspect of the present invention includes a fixed part provided at an opening, a sliding door type door that moves through the opening to open and close the opening, and a cushioning material attached to at least one of an edge of the door body and an edge of the fixed part that overlaps with the door body in a fully closed state, the cushioning material including a base block fixed to an end face of the edge perpendicular to the moving direction, and a cushioning block detachably attached to the base block; The buffer block comprises a detachable base portion that is detachably attached to the base block from the direction of movement, and a buffer function portion that protrudes from the detachable base portion toward the side of the door body or the opening. Effect of the Invention

[0030] In the above-mentioned cushioning material, a base block is fixed to an end surface of a door body or an edge of an opening in the direction of movement of the door body, and the cushioning block is detachably attached to the base block. The cushioning block has a detachable base part and a cushioning function part, and the detachable base part is detachably attached to the base block in the direction of movement of the door body, and the cushioning function part protrudes in the side direction of the door body or the edge of the opening. Therefore, the cushioning material can be easily attached to the edge of the door body or the opening without providing a dedicated structure for attaching the cushioning function part to the edge of the door body or the opening. Furthermore, since the detachable base part of the cushioning block is detachably attached to the base block in the direction of movement of the door body, the width of the base block and the detachable base part can be sufficiently widened in the thickness direction of the door body, and the support rigidity of the cushioning function part relative to the base block can be increased. Therefore, when the cushioning material and door opening / closing device of the present invention are adopted, the cushioning function part can be easily attached to the edges of the door body or opening without providing a dedicated mounting structure to these edges, and the cushioning function part can be stably supported. [Brief description of the drawings]

[0031] [Figure 1] 1 is a front view of an automatic door (door body opening and closing device) according to an embodiment; [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Diagram 3] FIG. [Figure 4] 4 is an exploded cross-sectional view of the cushioning material according to the embodiment taken along line IV-IV in FIG. 3. [Diagram 5] 4 is a cross-sectional view of the cushioning material and its mounting portion according to the embodiment taken along line VV in FIG. 3. [Figure 6] 6 is a cross-sectional view taken along line VI-VI in FIG. 5 . DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0032] Next, an embodiment of the present invention will be described with reference to the drawings. In the appropriate places in the drawing, there is indicated an arrow UP pointing upward (vertically upward) of the building, an arrow C pointing to the closing side of the moving direction of the movable door 3 (door body), and an arrow TH pointing to one side in the thickness direction (depth direction) of the movable door 3. In the following explanation, the side indicated by the arrow C will be referred to as the "closing direction," and the opposite side will be referred to as the "opening direction." Furthermore, the side indicated by the arrow TH will be referred to as the "outside," and the opposite side will be referred to as the "inside."

[0033] Fig. 1 is a front view of an automatic door 1, which is one embodiment of a sliding door type door body opening and closing device. Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. The automatic door 1 includes a fixed door 2 fixed to a building and a movable door 3 which is a door body movable in a horizontal direction. The fixed door 2 and the movable door 3 are installed in a substantially rectangular opening frame 4 of the building. The fixed door 2 is fitted and fixed to one side of the opening frame 4. The movable door 3 is arranged in the opening frame 4 so as to be adjacent to the fixed door 2 in the front and rear in the depth direction. The movable door 3 is movable between one end side and the other end side of the opening frame 4 in the horizontal direction. In this embodiment, the space between the opening frame 4 of the building and the fixed door 2 is an opening 5 through which people can enter and exit. In this embodiment, the opening frame 4 and a part of the fixed door 2 constitute the fixed part.

[0034] The movable door 3 is driven by a power source (not shown) such as a motor. The movable door 3 moves by the power of the drive source between an open position where the opening 5 is opened and a closed position where the opening 5 is closed. When the movable door 3 is in the open position, it overlaps with the fixed door 2 over almost the entire area in the depth direction, and when the movable door 3 is in the closed position (fully closed state), it overlaps with one edge of the fixed door 2 in the depth direction.

[0035] As shown in FIG. 2, both the fixed door 2 and the movable door 3 include a frame 10 surrounding the periphery (four sides) and a plate portion 11 made of glass or transparent resin that is supported by the frame 10. The frame 10 is formed to have a substantially rectangular cross-sectional shape. A notch portion 12 into which the peripheral portion of the plate portion 11 is inserted is formed on the inner wall of the cross-section of the frame 10. An auxiliary block 13 that holds the peripheral portion of the plate portion 11 is installed in the cross-section of the frame 10. The peripheral portion of the plate portion 11 is supported by the auxiliary block 13 in the frame 10 in a state where it is inserted into the notch portion 12 of the frame 10. The peripheral portion of the plate portion 11 is sealed between the notch portion 12 and the auxiliary block 13 by a sealing member 14 having an adhesive function.

[0036] 1, the frame 10 of the fixed door 2 and the movable door 3 includes upper and lower horizontal frames 10U, 10L that run along the upper and lower sides of the plate portion 11, and left and right vertical frames 10SL, 10SR that run along the side sides of the plate portion 11. The vertical frame 10SL of the movable door 3 overlaps with the vertical frame 10SR of the fixed door 2 in the depth direction when the movable door 3 is in the closed position. In addition, when the movable door 3 moves from the closed position to the open position, the vertical frame 10SL of the movable door 3 transitions from a state where it overlaps with the vertical frame 10SR of the fixed door 2 in the depth direction to a state where it overlaps with the side of the plate portion 11 of the fixed door 2.

[0037] Therefore, for example, when the movable door 3 is in a closed state, if an object such as a person's finger comes into contact with the outer surface (the surface on the far side in the depth direction) of the plate portion 11 of the movable door 3 and the movable door 3 moves in the opening direction (to the left in FIG. 2) in that state, the object comes closer to the vertical frame 10SR of the fixed door 2 as the movable door 3 moves. Also, when the movable door 3 is in a closed state, if an object such as a person's finger comes into contact with the inner surface (the surface on the near side in the depth direction) of the plate portion 11 of the fixed door 2 and the movable door 3 moves in the opening direction (to the left in FIG. 2) in that state, the vertical frame 10SL of the movable door 3 gradually comes closer to the object. In these cases, to prevent objects such as human fingers from coming into strong contact with the vertical frames 10SR, 10SL, similar cushioning materials 20 are attached to the vertical frame 10SR of the fixed door 2 and the vertical frame 10SL of the movable door 3, respectively. In this embodiment, the vertical frame 10SR of the fixed door 2 and the vertical frame 10SL of the movable door 3 form the door body and the edge of the opening.

[0038] The detailed structure of the cushioning material 20 will be described below. The cushioning material 20 attached to the vertical frame 10SR of the fixed door 2 and the cushioning material 20 attached to the vertical frame 10SL of the movable door 3 have the same configuration and function. For this reason, in the following, the cushioning material 20 will be described in detail as being attached to the vertical frame 10SR of the fixed door 2, and a detailed description of the cushioning material 20 attached to the vertical frame 10SL of the movable door 3 will be omitted.

[0039] Fig. 3 is an exploded perspective view of the cushioning material 20, and Fig. 4 is an exploded cross-sectional view of the cushioning material 20 taken along line IV-IV in Fig. 3. Fig. 5 is a cross-sectional view of the cushioning material 20 and the vertical frame 10SR taken along line VV in Fig. 3, and Fig. 6 is a cross-sectional view of the cushioning material 20 and the vertical frame 10SR taken along line VI-VI in Fig. 5. The cushioning material 20 includes a base block 21 fixed to the outer end surface 10Se of the vertical frame 10SR of the fixed door 2 from the moving direction of the movable door 3, and a cushioning block 22 detachably attached to the base block 21.

[0040] The base block 21 includes a long plate portion 21a that is placed on the outer end surface 10Se of the vertical frame 10SR, and a pair of base block side claw portions 21b that are integrally formed with the plate portion 21a. In this embodiment, the base block 21 is formed of a resin such as hard polyvinyl chloride (PVC). The base block 21 has a constant cross-sectional shape that continues along the longitudinal direction (the vertical direction of the outer end surface 10Se; the same applies below). The base block 21 can be formed, for example, by extrusion molding.

[0041] The plate portion 21a has a width narrower than the width in the depth direction of the outer end surface 10Se of the vertical frame 10SR, and extends vertically along the vertical frame 10SR. The plate portion 21a extends vertically from the vicinity of the upper end to the vicinity of the lower end of the outer end surface 10Se of the vertical frame 10SR. The plate portion 21a has a plurality of insertion holes 25 that penetrate in the thickness direction and are spaced apart in the vertical direction. The shafts 27b of the fixing screws 27 are inserted into the insertion holes 25 from the outside (the side facing the buffer block 22). The shafts 27b of the screws 27 that penetrate the insertion holes 25 are screwed into the screw holes 26 formed on the outer end surface 10Se side of the vertical frame 10SR. As a result, the heads 27a of the screws 27 are pressed against the outer surface of the plate portion 21a, and the entire base block 21 is fixed to the outer end surface 10Se of the vertical frame 10SR. In this embodiment, the base block 21 is fixed to the vertical frame 10SR using both the screws 27 and a double-sided tape (not shown).

[0042] The base block side claw portion 21b is connected to both side edges of the plate portion 21a in the width direction (depth direction of the outer end surface 10Se; the same applies below). The base block side claw portions 21b formed on both side edges of the plate portion 21a are formed to be symmetrical with each other across an imaginary line passing through the center of the width direction of the plate portion 21a. Each base block side claw portion 21b stands at a substantially right angle from the side edge of the plate portion 21a toward the buffer block 22 side, and the tip of the standing wall is bent toward the center of the width direction of the plate portion 21a. This cross-sectional shape of the base block side claw portion 21b is continuous along the longitudinal direction of the base block 21. Therefore, the base block side claw portion 21b with a constant cross section extends in the vertical direction. In this embodiment, the base block claw portion 21b constitutes a first engagement portion on the side of the base block 21. The base block claw portion 21b is capable of meshing with the buffer block claw portion 30b, which will be described later.

[0043] The buffer block 22 includes a detachable base portion 30 that is detachably attached to the base block 21 in the moving direction of the movable door 3, and a buffer function portion 31 that bulges outward from the detachable base portion 30 toward the outer side of the movable door 3. The detachable base portion 30 is formed of a hard resin such as polyvinyl chloride (PVC), and the buffer function portion 31 is formed of a softer resin such as polyvinyl chloride (PVC) than the detachable base portion 30. The cross section of the buffer block 22, in which the detachable base portion 30 and the buffer function portion 31 are combined, is continuous in the longitudinal direction while maintaining a substantially constant cross-sectional shape. The buffer block 22 can be formed by extrusion molding, similar to the base block 21.

[0044] The detachable base portion 30 comprises a covering wall 30a covering the outside of the base block 21, a pair of buffer block side claw portions 30b protruding from the inner surface of the covering wall 30a facing the base block 21 toward the plate portion 21a of the base block 21, and a reinforcing rib 30c protruding from approximately the center position in the width direction of the covering wall 30a toward the plate portion 21a.

[0045] The covering wall 30a is formed in a semi-elliptical shape with a cross section perpendicular to the longitudinal direction being crushed in the height direction (direction away from the outer end surface 10Se). More specifically, the cross-sectional shape of the covering wall 30a is formed in a gentle arc shape in the widthwise central region, and both edge portions of the central region are curved with a radius smaller than the radius of curvature of the arc of the central region and extend toward the base block 21. The edge portions on both sides of the covering wall 30a are disposed on the outer side in the width direction than the end portions (base block side claw portions 21b) of the base block 21. The tips of the edge portions on both sides of the covering wall 30a abut against or are close to the outer end surface 10Se of the vertical frame 10SR at positions outer than the base block 21 in the width direction. The covering wall 30a made of hard resin has a front-rear width set so as not to protrude outward in the width direction (depth direction) beyond the vertical frame 10SR when the buffer material 20 is attached to the outer end surface 10Se of the vertical frame 10SR. This makes it possible to avoid the inconvenience of the covering wall 30a interfering with the opening and closing operation of the movable door 3.

[0046] A pair of the buffer block side claws 30b are provided in the central region of the covering wall 30a, spaced apart in the width direction. The buffer block side claws 30b are formed to be symmetrical with respect to an imaginary line passing through the center of the covering wall 30a in the width direction. Each of the buffer block side claws 30b stands at a substantially right angle from the inner surface of the covering wall 30a toward the base block 21, and the tip of the standing wall is bent outward in the width direction. This cross-sectional shape of the buffer block side claws 30b is continuous along the longitudinal direction of the buffer block 22. Therefore, the buffer block side claws 30b, which have a constant cross section, extend in the vertical direction.

[0047] The outwardly bent portion at the tip of each of the buffer block side claws 30b can be engaged with the inwardly bent portion of the corresponding base block side claw 21b on the base block 21. The bent portion of the buffer block side claw 30b engages with the bent portion of the corresponding base block side claw 21b, thereby preventing the buffer block 22 from coming off the base block 21. In this embodiment, the buffer block side claw portion 30b constitutes a second engagement portion on the buffer block 22 side.

[0048] The reinforcing rib 30c protrudes from the approximate center position in the width direction of the covering wall 30a to the side facing the plate portion 21a of the base block 21, and the protruding portion extends in the vertical direction (the longitudinal direction of the detachable base portion 30). However, notches 33 are formed later at multiple locations in the extending direction of the reinforcing rib 30c. In addition, a roughly V-shaped groove 35 extending in the vertical direction (the longitudinal direction of the detachable base portion 30) is formed at the base of the reinforcing rib 30c in the protruding direction. This groove 35 is formed on both the front and rear surfaces in the thickness direction of the reinforcing rib 30c.

[0049] The cutouts 33 formed in the reinforcing rib 30c are formed in a substantially rectangular shape in front view as shown in Fig. 6. The cutouts 33 are formed at positions facing the heads 27a of the screws 27 for attaching the base block 21 to the outer end surface 10Se of the vertical frame 10SR. Each cutout 33 is formed so as to straddle the heads 27a of the screws 27 when the detachable base part 30 (the buffer block 22) is attached to the base block 21 by the engagement of the base block side claws 21b and the buffer block side claws 30b. Therefore, when the detachable base part 30 (the buffer block 22) is attached to the base block 21, interference between the reinforcing rib 30c and the heads 27a of the screws 27 can be avoided. Furthermore, after the detachable base portion 30 (buffer block 22) is attached to the base block 21, the edge portion 33s of the cutout portion 33 is positioned above and below the head 27a of the screw 27 with a small gap therebetween, as shown in FIG. 6.

[0050] The cutout portion 33 of the reinforcing rib 30c is formed as follows. The reinforcing rib 30c is formed without the notch 33 when the buffer block 22 is shaped. That is, the reinforcing rib 30c is formed continuously with other parts of the buffer block 22, for example, by extrusion molding. After this, a pair of notches is formed with a tool at the position of the reinforcing rib 30c facing the head 27a of the screw 27. The notches are made from the tip side of the reinforcing rib 30c to the position of the groove 35 at the base. Thereafter, the area between the pair of cuts of the reinforcing rib 30c is bent starting from the groove 35 on the base side, and the groove 35 is broken to cut out the area between the cuts. As a result, a cutout 33 is formed in the reinforcing rib 30c, the depth of which reaches the base.

[0051] As shown in Figs. 4 and 5, the buffer function section 31 includes a bulging wall 31a that bulges from the outer surface of the covering wall 30a of the detachable base section 30 toward the outer side surface of the movable door 3. The bulging wall 31a is a wall with a substantially U-shaped cross section. One end of the opening side of the bulging wall 31a is connected to the central region in the width direction of the covering wall 30a, and the other end of the opening side of the bulging wall 31a is connected to the tip of one side edge of the covering wall 30a (the side close to the movable door 3). The bulging wall 31a includes an inner wall 31ai that extends from the tip of the edge of the covering wall 30a toward the movable door 3, and an outer wall 31ao that extends from the central region of the covering wall 30a toward the movable door 3, and the tips of the inner wall 31ai and the outer wall 31ao are connected to each other by a curved wall. The inner wall 31ai of the bulging wall 31a abuts against the outer end surface 10Se of the vertical frame 10SR in a state in which the buffer material 20 is attached to the outer end surface 10Se of the vertical frame 10SR.

[0052] The bulging wall 31a connected to the covering wall 30a forms a hollow cross section together with a part of the covering wall 30a. The part of the covering wall 30a forming the hollow cross section forms a curved portion 30as that is curved convexly in the same direction as the protruding direction of the buffer function portion 31.

[0053] In addition, the end of the bulging wall 31a in the bulging direction protrudes outward beyond the end of the outer end surface 10Se of the vertical frame 10SR on the movable door 3 side. The thickness of the outer wall 31ao of the bulging wall 31a in the vicinity of the connection portion with the central region of the covering wall 30a becomes thinner toward the central region.

[0054] When attaching the cushioning material 20 having the above-mentioned structure to the vertical frame 10SR, first, the base block 21 is fixed to the outer end surface 10Se of the vertical frame 10SR with the screws 27, double-sided tape or the like. Thereafter, the detachable base portion 30 of the buffer block 22 is detachably attached to the base block 21. At this time, the detachable base portion 30 is engaged with the base block 21 from the same direction as the moving direction of the movable door 3. Specifically, the detachable base portion 30 is brought close to the base block 21 from the same direction as the moving direction of the movable door 3, and the buffer block side claw portion 30b is engaged with the base block side claw portion 21b. As a result, the buffer block 22 is locked in a state where it is prevented from coming off the base block 21.

[0055] <Effects of the embodiment> As described above, in the cushioning material 20 of this embodiment, the base block 21 is fixed to the outer end surface 10Se of the vertical frames 10SL, 10SR (edge ​​portion) of the fixed door 2 or the movable door 3, and the cushioning block 22 is detachably attached to the base block 21. The cushioning block 22 includes a detachable base portion 30 and a cushioning function portion 31, and the detachable base portion 30 is detachably attached to the base block 21 from the moving direction of the movable door 3, and the cushioning function portion 31 protrudes from the detachable base portion 30 in the side direction of the mating door that moves relatively. Therefore, the cushioning material 20 can be easily attached to the vertical frames 10SR, 10SL of the fixed door 2 or the movable door 3 without providing the fixed door 2 or the movable door 3 with a dedicated structure for attaching the cushioning function portion 31. In addition, in the cushioning material 20 of this embodiment, the detachable base portion 30 of the cushioning block 22 is attached to the base block 21 in a detachable manner from the movement direction of the movable door 3, so that the width of the base block 21 and the detachable base portion 30 can be sufficiently widened in the thickness direction of the fixed door 2 and the movable door 3, thereby increasing the support rigidity of the cushioning function portion 31 relative to the base block 21. Therefore, when the cushioning material 20 of this embodiment is adopted, the cushioning function part 31 can be easily attached to the vertical frames 10SL, 10SR (edge ​​portions) of the fixed door 2 and the movable door 3 without providing a dedicated mounting structure to the vertical frames 10SL, 10SR, and moreover, the cushioning function part 31 can be stably supported.

[0056] Furthermore, the cushioning material 20 of this embodiment is provided with engagement parts (base block side claw parts 21b and cushion block side claw parts 30b) that engage with the base block 21 and the detachable base part 30 to prevent them from coming off, and these engagement parts extend in the vertical direction and are formed with a constant cross-sectional shape over the vertical direction. Therefore, the detachable base part 30 can be firmly supported by the base block 21 over a wide range above and below the base block 21 and the detachable base part 30. Furthermore, in the case of this configuration, since each engagement portion (base block side claw portion 21b and buffer block side claw portion 30b) is formed with a constant cross-sectional shape in the vertical direction, the base block 21 and the detachable base portion 30 can be easily formed by extrusion molding, etc.

[0057] In the cushioning material 20 of this embodiment, the engagement portion between the base block 21 and the detachable base part 30 is configured by the base block side claw part 21b and the cushion block side claw part 30b which mesh with each other. Therefore, the engagement between the base block side claw part 21b and the cushion block side claw part 30b can reliably prevent the detachable base part 30 from coming off the base block 21. In addition, in the case of this configuration, the base block side claw portion 21b and the buffer block side claw portion 30b are engaged with each other by flexibly deforming each of the claw portions 21b, 30b and their surrounding areas, thereby making it possible to easily attach the detachable base portion 30 to the base block 21.

[0058] In addition, in the cushioning material 20 of this embodiment, the cushioning function part 31 of the cushioning block 22 is formed of a material that is softer than the detachable base part 30. Therefore, the detachable base part 30 is firmly supported by the base block 21, and when an object comes into contact with the cushioning function part 31, the cushioning function part 31 can sufficiently absorb the impact acting on the object.

[0059] In the cushioning material 20 of this embodiment, a cover wall 30a is provided on the detachable base part 30 to cover the outside of the base block 21, and a reinforcing rib 30c is provided that protrudes from the cover wall 30a to the side facing the base block 21 and extends along the vertical direction. The base block 21 is fixed to the outer end surface 10Se of the vertical frame 10SR, 10SL by the screw 27, and a notch 33 that straddles the head 27a of the screw 27 is provided at a position of the reinforcing rib 30c facing the head 27a of the screw 27. In this configuration, the cover wall 30a of the detachable base part 30 covers the outside of the base block 21, so that the base block 21 is not visible from the outside, and the appearance quality is improved. In addition, the cover wall 30a is reinforced by the reinforcing rib 30c, so that the rigidity of the entire detachable base part 30 can be increased. In addition, in this configuration, a notch 33 is provided in the reinforcing rib 30c so as to straddle the head 27a of the screw 27, thereby avoiding interference between the reinforcing rib 30c and the head 27a of the screw 27 and improving the ease of installation of the detachable base portion 30. Furthermore, in the case of this configuration, after the buffer block 22 (detachable base portion 30) is attached to the base block 21, the edges 33s of the notches 33 of the reinforcing ribs 30c are disposed above and below the heads 27a of the screws 27 protruding from the base block 21. For this reason, when the buffer block 22 is subjected to an external force from the outside and attempts to be displaced in the vertical direction, the edges 33s of the notches 33 come into contact with the heads 27a of the screws 27, thereby making it possible to regulate the vertical displacement of the buffer block 22. Therefore, when this configuration is adopted, the vertical positional deviation of the buffer block 22 can be suppressed, and the appearance and performance of the buffer material 20 can be maintained at a high level.

[0060] In the cushioning material 20 of this embodiment, a substantially V-shaped groove 35 extending in the up-down direction is further formed at the base of the reinforcing rib 30c in the protruding direction. Therefore, by making a pair of cuts in the reinforcing rib 30c at a desired position and bending the region between the cuts starting from the groove 35, the cutout portion 33 can be easily formed in the reinforcing rib 30c. Therefore, when this configuration is adopted, it is possible to flexibly accommodate automatic opening and closing doors 1 (door body opening and closing devices) of various specifications that have different installation positions for the fixing screws 27, without having to manufacture different products (buffer blocks 22).

[0061] In addition, in the cushioning material 20 of this embodiment, the cushioning function part 31 of the detachable base part 30 forms a hollow cross section together with the cover wall 30a. Therefore, when an object such as a human finger comes into contact with the wall of the hollow cross section of the cushioning function part 31 during the opening and closing operation of the movable door 3, the intermediate cross section is elastically deformed with an appropriate reaction force. Therefore, when this configuration is adopted, the object can be appropriately protected while mitigating the contact shock of the object.

[0062] In addition, in the cushioning material 20 of this embodiment, a part of the covering wall 30a forming the hollow cross section forms a curved portion 30as that is curved convexly in the same direction as the protruding direction of the cushioning function part 31. Therefore, when an object such as a person's finger deforms the wall of the cushioning function part 31 and is pressed against a part of the hard covering wall 30a during the opening and closing operation of the movable door 3, the load can be smoothly received by the curved portion 30as that is convex in the same direction as the protruding direction of the cushioning function part 31. Therefore, when this configuration is adopted, the contact impact of the object can be further mitigated.

[0063] Furthermore, in the cushioning material 20 of this embodiment, the bulging wall 31a of the cushioning function section 31 protrudes outward from the outer end of the vertical frames 10SR, 10SL in the width direction. Therefore, when an object contacts the hollow cross-sectional wall of the cushioning function section 31 and a load is applied to the cushioning function section 31, a part of the hollow cross-sectional wall (inner wall 31ai) is pressed against the corner of the vertical frames 10SR, 10SL. As a result, the cushioning function section 31 is easily deflected and deformed from the contact point with the corner of the vertical frames 10SR, 10SL as a starting point. Therefore, when this configuration is adopted, the contact impact of the object can be further mitigated.

[0064] In addition, the cushioning material 20 of this embodiment is formed so that the thickness of the outer wall 31ao of the cushioning function section 31 near the connection part with the covering wall 30a becomes thinner toward the covering wall 30a side. Therefore, when an object comes into contact with the wall of the hollow cross section of the cushioning function section 31 and a load is applied to the cushioning function section 31, the outer wall 31ao of the cushioning function section 31 is easily deflected and deformed around the vicinity of the connection part with the covering wall 30a. Therefore, when this configuration is adopted, the contact impact of the object can be further mitigated.

[0065] The present invention is not limited to the above embodiment, and various design modifications are possible without departing from the gist of the present invention. For example, in the above embodiment, the buffer material 20 is attached to each of the vertical frame 10SR of the fixed door 2 and the vertical frame 10SL of the movable door 3, but the buffer material 20 may be attached to only the vertical frame 10SR, 10SL of either the fixed door 2 or the movable door 3.

[0066] In the above embodiment, the plate portions 11 of the fixed door 2 and the movable door 3 are formed of glass or transparent resin, but the plate portions 11 do not necessarily have to be made of glass or transparent resin. The plate portions 11 may be made of, for example, metal or opaque resin. The plate portions 11 may also be something like a mesh screen door or have a lattice structure. Moreover, the frame 10 does not necessarily have to be disposed on the outer peripheral edge (four sides) of the plate portion 11. In this case, the cushioning material 20 may be fixed directly to the outer end face of the side edge of the plate portion 11.

[0067] Furthermore, in the above embodiment, an automatic opening and closing door 1 having a fixed door 2 and a movable door 3 is exemplified as one form of a door opening and closing device, but the door opening and closing device is not limited to that described in the above embodiment. The door opening and closing device may be, for example, an automatic opening and closing door that does not have a fixed door. Furthermore, the door opening and closing device is not limited to an automatic type driven by a drive source such as a motor, but may be one in which the door is opened and closed manually.

[0068] In addition, among the embodiments disclosed in this specification, those that are configured with multiple objects may be integrated, and conversely, those that are configured with one object may be divided into multiple objects. Regardless of whether they are integrated or not, it is sufficient that they are configured to achieve the object of the invention. [Explanation of symbols]

[0069] 1...automatic opening and closing door (door body opening and closing device), 3...movable door (door body), 5...opening, 10SL, 10SR...vertical frame (edge), 10Se...outer end surface, 20...buffer device, 21...base block, 21b...base block side claw portion (first engagement portion), 22...buffer block, 27...screw, 27a...head, 30...detachable base portion, 30a...cover wall, 30c...reinforcing rib, 31...buffer function portion, 33...notch portion, 35...groove

Claims

1. A cushioning material is attached to at least one of an edge of a sliding door body that opens and closes an opening and an edge of the opening that overlaps with the door body in a fully closed state, a base block fixed to an end surface of the edge portion perpendicular to the moving direction; a buffer block detachably attached to the base block; Equipped with The buffer block is a detachable base portion that is detachably attached to the base block in the moving direction; A buffer function portion protruding from the detachable base portion toward a side surface of the door body or the opening; A cushioning material that has

2. The base block is provided with a first engagement portion, The detachment base portion is provided with a second engagement portion that comes into contact with the first engagement portion to prevent the first engagement portion from coming off. The cushioning material according to claim 1 , wherein the first engaging portion and the second engaging portion extend in the up-down direction of the edge portion and are formed to have a substantially constant cross-sectional shape throughout the up-down direction.

3. The cushioning material according to claim 2 , wherein the first engaging portion and the second engaging portion have claw portions that mesh with each other.

4. The cushioning material according to claim 1 , wherein the cushioning function portion is formed of a material softer than the detachable base portion.

5. The base block is fixed to the end surface by a screw, The detachable base portion is A cover wall covering the outside of the base block; a reinforcing rib protruding from the cover wall toward a side facing the base block and extending along the up-down direction; Equipped with The cushioning material according to claim 1 , wherein a groove extending along the vertical direction is formed at a base portion of the reinforcing rib in the protruding direction.

6. The detachable base portion includes a covering wall that covers the outside of the base block, The cushioning material according to claim 1 , wherein the cushioning function portion forms a hollow cross section together with the covering wall.

7. The cushioning material according to claim 6 , wherein a portion of the cover wall forming the hollow cross section has a curved shape that is convex toward the same direction as the projection direction of the cushioning function portion.

8. The cushioning material according to claim 6 , wherein at least a part of the cushioning function portion protrudes outward beyond the end of the end surface to which the base block is fixed.

9. 7. The cushioning material according to claim 6, wherein the cushioning function portion has a thickness in the vicinity of a connection portion with the covering wall that becomes thinner toward the covering wall side.

10. A fixing portion provided at the opening; A sliding door body that moves the opening to open and close the opening; A cushioning material is attached to at least one of an edge of the door body and an edge of the fixing part that overlaps with the door body in a fully closed state; Equipped with The cushioning material is a base block fixed to an end surface of the edge portion perpendicular to the moving direction; a buffer block detachably attached to the base block; Equipped with The buffer block is a detachable base portion that is detachably attached to the base block in the moving direction; A buffer function portion protruding from the detachable base portion toward a side surface of the door body or the opening; A door opening and closing device comprising:

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