Door protective member and door

Abstract

To provide a door protective member having a satisfactory buffer function.SOLUTION: Protective members 20 are provided along a lower edge part of a rotatably installed door body 10. Each protective member 20 comprises: an upper base part 21 fixed to a lower end face 11 of the door body 10; and a buffer part 22 protruding downward from the base part 21 and facing a floor face F via a space S1. The base part 21 and the buffer part 22 are made of the same flexible material. The base part 21 has a plate shape, and the buffer part 22 has a curved shape. In the vicinity of a crossing part 13 between the lower end face 11 and a plate face 12 of the door body 10, end parts 21a, 22a of the base part 21 and the buffer part 22 are continued each other, and a hollow part 25 is formed between the base part 21 and the buffer part 22.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a door protection member and a revolving door equipped with said protection member. [Background technology]

[0002] In a house, a gap is formed between the door and the floor to ensure ventilation in the room even when the revolving door is closed and to prevent the accumulation of chemical substances, etc. A protective member is provided along the lower edge of the door body to prevent toes from getting caught in the gap (hereinafter referred to as finger trapping) and causing injury.

[0003] The protective member in Patent Document 1 is made of a two-color extrusion molding, and has a base part fixed to the lower end surface of the door body and a buffer part facing the floor surface with a gap therebetween. The buffer part is softer than the base part. The base part is mountain-shaped, and the buffer part is provided at the top of the base part. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5926538 Summary of the Invention [Problem to be solved by the invention]

[0005] In the protective member of Patent Document 1, the amount of elastic deformation of the buffer portion when a finger is trapped is small, so it is not possible to further improve the buffer function. [Means for solving the problem]

[0006] The present invention has been made to solve the above-mentioned problems, and is characterized in that a protective member provided along the lower edge of a door body comprises a base portion fixed to the lower end surface of the door body, and a buffer portion protruding downward from the base portion and facing a floor surface across a gap, the base portion having a flat plate portion at least on the side of the intersection between the lower end surface of the door body and a plate surface, and the buffer portion is provided below the flat plate portion. According to this configuration, since the buffer section is provided below the flat plate section of the base section, the height of the buffer section can be increased, and the amount of elastic deformation of the buffer section can be increased when a finger is pinched. As a result, good buffering function can be achieved.

[0007] In a first form of the door protection member of the present invention, the base portion and the buffer portion are made of the same flexible material, the ends of the base portion and the buffer portion located near the intersection portion are connected to each other, and a hollow portion is formed between the base portion and the buffer portion. According to this configuration, the base part and the buffer part are made of the same flexible material, so the molding cost can be reduced, and since there is no interface between the base part and the buffer part, it can withstand long-term use. In addition, since the buffer part faces the base part through a hollow part, a large amount of elastic deformation can be secured, and good buffer function can be exhibited when a finger is pinched. Furthermore, since the protective member is not solid but has a hollow part, it is easy to cut. Therefore, for example, it is possible to transport a long protective member to a construction site in a rolled state and cut it to a predetermined length at the construction site, which improves transportation efficiency.

[0008] In the first embodiment, the portion of the buffer part far from the intersection part preferably has a shape approaching the base part. With this configuration, not only the portion of the buffer part near the intersection part of the door body but also the elastic deformation of the portion far from the intersection part contributes to the buffer function, so that the buffer function can be further improved.

[0009] Preferably, an end of the buffer part far from the intersection is in contact with the base part or is disposed opposite to the base part via a gap. With this configuration, since the end of the buffer part far from the intersection is a free end, it is possible to reduce resistance in the direction in which the toes are inserted, and thus it is possible to reduce the load on the toes. Also, an end of the buffer portion farther from the intersection portion may be integrally connected to the base portion.

[0010] In the first embodiment, the buffer portion preferably has a curved shape. With this configuration, it is possible to reduce resistance in the direction in which the toes are inserted, and thus the load on the toes can be reduced.

[0011] In the first embodiment described above, preferably, the base portion has a flat plate shape over its entire area, and the buffer portion has the same thickness as the base portion. With this configuration, the moldability of the protection member can be further improved.

[0012] In a second form of the door protection member of the present invention, the buffer portion is made of a flexible material, the base portion is made of a material harder than the buffer portion, and the base portion has a holding area as the flat plate portion, and the buffer portion is provided in this holding area. According to this configuration, the base portion, which is harder than the buffer portion, can improve the workability when fixing the protection member to the lower end surface of the door body.

[0013] In the second embodiment, the buffer section preferably has an asymmetrical shape in cross section in the width direction, with the portion on the intersection side having a convex curved surface, and the portion away from the intersection having a shape recessed from a virtual convex curved surface symmetrical to the convex curved surface, with at least a portion having a concave curved surface. With this configuration, the elastic deformation in the direction in which the toes are inserted can be increased when the toes are pinched, thereby further improving the buffer function. The buffer portion may have a symmetrical cross section in a width direction thereof and have a cylindrical surface.

[0014] In the second embodiment, the base portion preferably has a flat shape over the entire area and has a non-holding area that is connected to the holding area and extends in a direction away from the intersection. With this configuration, the protection member can be firmly fixed to the lower end surface of the door body.

[0015] In the second embodiment, the non-retaining area may be formed with a groove extending in the longitudinal direction away from the buffer part. With this configuration, when a finger is trapped, stress concentration at the edge of the interface between the base part and the buffer part (the edge away from the intersection part of the door body) can be avoided, and cracks at the interface can be prevented.

[0016] In the second embodiment, the base portion may have a non-retaining area that is continuous with the retaining area and extends away from the intersection, and a protuberance that extends in the longitudinal direction away from the buffer portion may be formed in the non-retaining area. With this configuration, when a finger is trapped, stress concentration at the edge of the interface between the base portion and the buffer portion (the edge away from the intersection of the door body) can be avoided, and cracks at the interface can be prevented.

[0017] Furthermore, the present invention is characterized in that in a door comprising a rotatably installed door main body and the door protection member of the first embodiment, a protrusion is formed on the end of the base portion on the side of the intersection, and the protrusion abuts against the plate surface of the door main body. With this configuration, the intersection of the door main body can be protected by the protrusion.

[0018] Furthermore, the present invention is characterized in that in a door comprising a rotatably installed door main body and the door protection member of the second embodiment described above, the end of the buffer part on the side of the intersection part covers the end of the base part on the side of the intersection part, and a protrusion standing upward is provided on the end of the buffer part on the side of the intersection part, and this protrusion abuts against the plate surface of the door main body. With this configuration, the intersection part of the door main body can be protected by the protrusion.

[0019] Furthermore, the present invention is characterized in that in a door comprising a rotatably installed door main body and the door protection member of the second embodiment, an engagement protrusion that protrudes upward and extends in the longitudinal direction is formed in the holding area, and a receiving member that receives the engagement protrusion is embedded in the lower end surface of the door main body. With this configuration, the protection member can be firmly fixed to the lower end surface of the door main body.

[0020] In addition, the present invention is characterized in that, in a door comprising a rotatable door body and the above-mentioned door protection member, the protection member is disposed at a position set back from the plate surface of the door body. With this configuration, the protection member can be hidden from the line of sight of a person standing near the door. Effect of the Invention

[0021] According to the present invention, a door protection member having excellent shock-absorbing properties can be provided. [Brief description of the drawings]

[0022] [Figure 1] FIG. 2 is a front view of a door according to the present invention, showing an exaggerated gap between the door and the floor. [Diagram 2] 2 is an enlarged cross-sectional view taken along line II-II of FIG. 1, showing the arrangement of the door protection member according to the first embodiment. [Diagram 3] 1A, 1B, 1C, 1D, and 1E are enlarged views of the protective member, with (a) being a front view, (b) being a rear view, (c) being a right side view, (d) being a plan view, and (e) being a bottom view. [Figure 4] 4 is an enlarged cross-sectional view of a main portion of the protection member and the door body. FIG. [Diagram 5] 2 and shows a first modified example of the protective member according to the first embodiment. FIG. [Figure 6] 2 and shows a second modified example of the protective member according to the first embodiment. FIG. [Figure 7] 2 and shows a third modified example of the protective member according to the first embodiment. FIG. [Figure 8] 2 and shows a fourth modified example of the protective member according to the first embodiment. FIG. [Figure 9] 2 and shows a fifth modified example of the protective member according to the first embodiment. FIG. [Figure 10] 2 and shows a sixth modified example of the protective member according to the first embodiment. FIG. [Figure 11] 2 and shows the arrangement of a door protection member according to a second embodiment. FIG. [Figure 12] 1A, 1B, 1C, 1D, and 1E are enlarged views of the protective member, with (a) being a front view, (b) being a rear view, (c) being a right side view, (d) being a plan view, and (e) being a bottom view. [Figure 13] 4 is an enlarged cross-sectional view of the protective member and the main part of the door body, in which only the buffer part is indicated by hatching. [Figure 14] 13 and shows a first modified example of the protective member according to the second embodiment. FIG. [Figure 15] 13A and 13B are views showing a second modified example of the protective member according to the second embodiment. [Figure 16] 13 and shows a third modified example of the protective member according to the second embodiment. FIG. [Figure 17] 13 and shows a fourth modified example of the protection member according to the second embodiment. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] A door using a protective member according to the present invention will be described below with reference to Figures 1 to 4. As shown in Figure 1, a partition wall that separates rooms has a door opening 2 whose upper edge and both side edges are framed by a door frame 1. A door 3 that opens and closes the door opening 2 is rotatably supported by a hinge 4 at one side edge.

[0024] As shown in Figure 2, a receiving member 6 is placed between floorboards 5, 5 of adjacent rooms, and a floor trim 7 is attached to this receiving member 6. The receiving member 6 and the floor trim 7 are placed to extend between the vertical frame portions of the door frame 1, and the floor trim 7 protrudes approximately 3 mm from the upper surfaces of the floorboards 5, 5. The upper surfaces of the floorboards 5, 5 and the upper surface of the floor trim 7 form a floor surface F. It is noted that the floor surface F may be formed by the continuous floorboards 5 without providing a floor trim 7 at the boundary between adjacent rooms.

[0025] 1 and 2, the door 3 includes a door body 10 and a pair of elongated protective members 20 attached along the lower edge of the door body 10. The pair of protective members 20 are fixed to the lower end surface 11 of the door body 10, spaced apart in the thickness direction of the door body 10. The protective members 20 preferably have a length equivalent to the entire length of the lower edge of the door body 10, but may be shorter than this.

[0026] <Configuration of the protective member according to the first embodiment> The protective member 20 of the first embodiment is made of a flexible material having rubber elasticity such as elastomer or rubber, and is preferably made of a material having a durometer hardness (based on JIS K 6253-3 "Vulcanized rubber and thermoplastic rubber - Determination of hardness - Part 3") of 70 to 80. If the durometer hardness is lower than 70, wrinkles and the like may occur during application, and if the durometer hardness is higher than 80, the material may be too hard to cushion when a finger is trapped. More specifically, the protective member 20 can be made by monochromatic extrusion molding of a material selected from styrene-based elastomers, silicone, soft PVC, ethylene-based elastomers, etc. The protective member 20 can be transparent or opaque.

[0027] As shown in Figs. 2 to 4, the protective member 20 includes an upper base portion 21, a buffer portion 22 protruding downward from the base portion 21, and a protrusion 23 protruding upward from the base portion 21. As is clear from the above description, the base portion 21, the buffer portion 22, and the protrusion 23 are made of the same material and are integrally connected. The base portion 21 and the buffer portion 22 are connected at one end portion 21a, 22a in the width direction. The protrusion 23 is provided at the end portion 21a of the base portion 21. The base portion 21 has a flat plate shape (flat plate portion) over the entire area and is wider than the buffer portion 22. The buffer portion 22 has approximately the same thickness as the base portion 21.

[0028] The base portions 21 of the pair of protective members 20 are adhesively fixed to the lower end surface 11 of the door body 10 by an adhesive or a double-sided adhesive tape. In addition to or instead of this adhesive fixation, the base portions 21 may be fixed to the lower end surface 11 of the door body 10 by driving staples with a stapler.

[0029] When the protective member 20 is in a fixed state, the ends 21a, 22a of the base portion 21 and the buffer portion 22 are disposed near the intersection 13 between the lower end surface 11 of the door body 10 and the plate surface 12. In this embodiment, the ends 21a, 22a protrude from the plate surface 12, and the protrusion 23 abuts against this plate surface 12. The protrusion 23 protects the intersection 13 (edge ​​portion). The base portion 21 is provided as a flat plate portion whose area on the intersecting portion 13 side faces the buffer portion 22 .

[0030] The buffer portion 22 of the protective member 20 in this embodiment is curved in a substantially circular arc shape, and in a portion close to the intersection 13, it is inclined downward (away from the base portion 21) as it moves away from the intersection 13, and in a portion farther from the intersection 13, it is inclined upward (closer to the base portion 21) as it moves away from the intersection 13. The other end 22b of the buffer portion 22 (the end farther from the intersection 13) is a free end, and faces the widthwise middle portion of the base portion 21 with a gap G therebetween. A hollow portion 25 is formed between the base portion 21 and the buffer portion 22.

[0031] The thickness of the base portion 21 of the protective member 20 is preferably 0.5 mm or more to ensure good workability when fixing it to the bottom end surface 11 of the door body 10, and is preferably 1.5 mm or less to ensure a sufficient hollow portion 25. In this embodiment, the thickness is 1.0 mm. The width of the base portion 21 is 10 mm, the width of the buffer portion 22 is 6 mm, the height of the protrusion 23 is 1 mm, and the protruding height of the buffer portion 22 from the bottom end surface 11 of the door body 10 is 3 mm.

[0032] <Door ventilation function> If the dimension between the bottom end surface 11 of the door body 10 and the floor board 5 is 13 mm, when the door body 10 is in the closed position as shown in Fig. 2, the gap S1 between the buffer portion 22 of the protective member 20 and the upper surface of the floor material 5 can be set to 10 mm, and the gap S2 between the bottom end surface 11 of the door body 10 and the floor trim 7 can be set to 10 mm, thereby providing a sufficient ventilation function. In other words, based on the provisions of the table of Article 20-5, Paragraph 1, Item 4 and Article 20-6, Paragraph 2 of the Enforcement Order of the Building Standards Act (Cabinet Order No. 383 of 1950), the ventilation function can be fully provided to ensure the ventilation required to prevent sanitary problems caused by the emission of formaldehyde.

[0033] <Cushioning function of protective materials> When the toes are inserted into the gap S1 (when the toes are pinched), mainly the buffer portion 22 of the protective member 20 is pressed by the toes and elastically deforms. Specifically, the buffer portion 22 elastically deforms to reduce its height and approach the base portion 21. Since the buffer portion 22 faces the flat plate portion of the base portion 21 via the hollow portion 25, the amount of elastic deformation can be increased. Furthermore, the buffer portion 22 elastically deforms not only in the area close to the intersection 13 of the door body 10 but also in the area far from the intersection 13. As a result, it is possible to exhibit good buffering function and protect the toes. In this embodiment, since there is a gap G between the end 22b of the buffer portion 22 and the base portion 21, the amount of elastic deformation in the height direction can be further increased. Note that the end 22b may be in contact with the base portion 21.

[0034] End 22b of buffer section 22 is a free end, and displaces in a direction away from intersection 13 when toes are inserted, thereby reducing resistance in the insertion direction. This reduces the load when toes hit buffer section 22. Buffer section 22 has a curved shape, and the portion on the intersection 13 side is inclined, which also reduces the load on the toes.

[0035] <Other advantages of protective materials> The protective member 20 has excellent moldability and can be manufactured at low cost because all parts, including the base portion 21 and the buffer portion 22, are molded from the same material, the base portion 21 is flat in shape, and the buffer portion 22 has the same thickness as the base portion 21. The protective member 20 does not have an interface as in a two-color molded product, and does not crack at the interface due to long-term use, so it can withstand long-term use. The protective member 20 is not solid but has a hollow portion 25, and therefore can be easily cut. Therefore, the protective member rolled up in a long length can be transported to the construction site and cut to a length appropriate for the door at the construction site.

[0036] <Modification of the protective member of the first embodiment> Modifications of the protective member of the first embodiment will be described below with reference to the drawings. Components corresponding to those of the protective member described above are given the same or similar reference numerals, and detailed description thereof will be omitted.

[0037] In the above-mentioned first embodiment, the pair of protective members 20 are disposed apart in the thickness direction of the door body 10, and the middle part of the lower end surface 11 of the door body 10 in the thickness direction is exposed. In contrast, in the first modified example shown in Fig. 5, a single protective member 20A is used. This protective member 20A has a base portion 21 having a width corresponding to the thickness of the door body 10, and a pair of buffer portions 22 connected to both ends in the width direction of the base portion 21 (ends near the intersection portion 13), and the base portion 21 is fixed so as to cover the entire lower end surface of the door body 10.

[0038] A pair of protective members 20B of a second modified example shown in Fig. 6 does not have the protrusions 23 of the first embodiment. In this second modified example, ends 21a, 22a of base portion 21 and buffer portion 22 are set back about 1 to 3 mm from plate surface 12. By setting back protective member 20B in this manner, protective member 20B can be hidden from the line of sight of people near the door, and a protective member with excellent aesthetic appearance can be obtained.

[0039] In a pair of protective members 20C of a third modified example shown in FIG. 7, the end portion 22b of the buffer portion 22 is integrally connected to the widthwise intermediate portion of the base portion 21, whereby the hollow portion 25 has a closed cross section.

[0040] A pair of protection members 20D of a fourth modified example shown in FIG. 8 has a shape obtained by omitting the protrusions 23 from the protection member 20C of the third modified example, and is disposed recessed from the plate surface 12 of the door body 10.

[0041] In a protective member 20E of a fifth modified example shown in FIG. 9, a buffer section 22 has a shape having corners so as to form a hollow section 25 having a rectangular cross section.

[0042] A protection member 20F of a sixth modified example shown in FIG. 10 has a shape obtained by omitting the protrusions 23 from the protection member 20E of the fifth modified example, and is disposed receding from the plate surface 12 of the door body 10.

[0043] The features of the various protective members described above may be incorporated into other protective members if possible. The protective members 20B, 20C, and 20F in Figures 6, 8, and 10 may not be recessed from the plate surface 12, but may have ends in contact with the extended surface of the plate surface 12.

[0044] <Configuration of the protective member according to the second embodiment> Next, a protective member 120 according to a second embodiment of the present invention will be described with reference to Figs. 11 to 13. The protective member 120 includes an upper base portion 121 and a buffer portion 122 protruding downward from the base portion 121. The base portion 121 and the buffer portion 122 are made of different materials and are obtained by two-color extrusion molding. The buffer portion 122 is made of a flexible material having rubber elasticity such as elastomer or rubber, and the base portion 121 is harder than the buffer portion 122. The base portion 121 may be formed of a hard resin that does not have rubber elasticity. For example, the buffer portion 122 is made of a styrene-based elastomer, and the base portion 121 is made of ABS resin. There are no restrictions on the color of the protective member 120, but it is, for example, gray.

[0045] In this embodiment, the base portion 121 has a flat plate shape having a uniform thickness over the entire area. One side in the width direction of the base portion 121 is a holding area 121a (flat plate portion) described later, and the other side is a non-holding area 121b.

[0046] The base portions 121 of the pair of protective members 120 are adhesively fixed to the lower end surface 11 of the door body 10 by an adhesive or double-sided adhesive tape. In addition to or instead of this adhesive fixing, the base portions 121 may be fixed to the lower end surface 11 of the door body 10 by driving staples using a stapler. The staples are driven into the non-holding areas 121b. Since the non-holding areas 121b also have a flat plate shape, the staples can be driven at right angles to the non-holding areas 121b and the lower end surface of the door body 10.

[0047] When the protective member 120 is in a fixed state, one end 121x in the width direction of the base portion 121 (the end on the holding area 121 side) is disposed near an intersection 13 between the lower end surface 11 of the door body 10 and the plate surface 12. The holding area 121a is disposed on the intersection 13 side, and the non-holding area 121b is disposed away from the intersection 13. In this embodiment, the one end 121x of the base portion 121 is set back from the plate surface 12 by approximately 1 to 3 mm.

[0048] A buffer section 122 is provided in a holding region 121a of a base section 121. The buffer section 122 of this embodiment has an asymmetrical widthwise cross-sectional shape, with a portion 122a closer to the intersection 13 than the center in the widthwise direction having a convex curved surface (cylindrical surface), and a portion 122b farther from the intersection 13 having a shape recessed from a virtual convex curved surface 122m symmetrical to the convex curved surface of the portion 122a, with a part of the portion having a concave curved surface.

[0049] The dimensions of the protective member 120 are, for example, as follows: the thickness of the base portion 121 is 1 mm, the width of the base portion 121 is 10 mm, the width of the holding area 121a (the width of the buffer portion 122) is 4 mm, the width of the non-holding area 121b is 6 mm, and the protruding height of the buffer portion 122 from the bottom end surface 11 of the door body 10 is 3 mm.

[0050] <Door ventilation function> If the dimension between the bottom end surface 11 of the door body 10 and the floor board 5 is 13 mm, when the door body 10 is in the closed position as shown in Figure 2, the gap S1 between the buffer portion 122 of the protective member 120 and the upper surface of the floor material 5 can be made 10 mm, and the gap S2 between the bottom end surface 11 of the door body 10 and the floor trim 7 can be made 10 mm, thereby providing sufficient ventilation function.

[0051] <Cushioning function of protective materials> When the toes are inserted into the gap S1 (when the toes are pinched), the buffer section 122 of the protective member 120 is pressed by the toes and elastically deforms. Specifically, the buffer section 122 elastically deforms to reduce its height and also in the direction in which the toes are inserted. Since the holding area 121a of the base section 121 has a flat plate shape, the height of the buffer section 122 from the base section 121 can be sufficiently secured, and the amount of elastic deformation can be increased. Furthermore, the buffer section 122 is asymmetric, and the part 122b farther from the intersection 13 is recessed, so that it also elastically deforms greatly in the direction in which the toes are inserted. As a result, it is possible to exhibit good buffering function and protect the toes.

[0052] <Other advantages of protective materials> The buffer portion 122 is provided on the flat surface of the holding area 121a, and therefore has good moldability and can reduce molding costs. Since the base portion 121 is harder than the buffer portion 122, the workability in fixing it to the lower end surface 11 of the door main body 10 can be improved. Since the protective member 120 is disposed at a distance from the plate surface 12 of the door body 10, the protective member 120 can be hidden from the line of sight of people near the door. Since the buffer portion 122 has the non-holding area 122b, the fixing area to the bottom end surface 11 of the door body 10 can be expanded, and the staple can be firmly fixed. In addition, since the non-holding area 122b is also flat, the staple can be driven in a direction perpendicular to the non-holding area 122b and the bottom end surface 11 of the door body 10.

[0053] <Modification of the protective member of the second embodiment> Modifications of the protective member 120 of the second embodiment will be described below with reference to the drawings. Components corresponding to those of the preceding protective member are given the same or similar reference numerals, and detailed description thereof will be omitted.

[0054] In protective member 120A of a first modification shown in Fig. 14, buffer portion 122 has a symmetrical shape in cross section in the width direction and has a cylindrical surface. In non-holding region 121b of base portion 121, shallow groove 123 is formed which is away from buffer portion 122 and extends in the longitudinal direction of base portion 121. This groove 123 makes it possible to prevent stress from concentrating at the end (indicated by P in the figure) farther from intersection portion 13 at the interface between base portion 121 and buffer portion 122, and makes it possible to prevent cracks from occurring along the interface at end P due to long-term use.

[0055] 15 has an engagement protrusion 124 with an arrow-shaped cross section that protrudes upward from the holding region 121a of the base portion 121. The engagement protrusion 124 extends in the longitudinal direction of the base portion 121. Meanwhile, a receiving member 15 is embedded in the lower end surface 11 of the door main body 10, and by inserting the engagement protrusion 124 into this receiving member 15, the protection member 120B can be firmly fixed to the lower end surface 11 of the door main body 10. In this embodiment, the non-holding region 121b is preferably fixed to the lower end surface 11 of the door main body 10 with an adhesive, double-sided tape, or the like.

[0056] 16, the non-holding area 121b of the base portion 121 is not flat, but has a protruding portion 125 that protrudes downward as it moves away from the intersection portion 13 of the door body 10. This protruding portion 125 also plays a role in preventing stress concentration at the edge P due to long-term use and preventing cracks from occurring along the interface.

[0057] In a protection member 120D of a fourth modification shown in Fig. 17, an end 121x of a base portion 121 is on an extension of the plate surface 12 of the door body 10. An end 122x on the intersecting portion 113 side of the buffer portion 122 covers the end 121x of the base portion 121, and a protrusion 126 protrudes upward from this end 122x. The protrusion 126 abuts against this plate surface 12 to protect the intersecting portion 13 (edge ​​portion).

[0058] The features of the various protective members described above may be incorporated into other protective members if possible. The protective members 20, 20A, 20B, and 20C in Figures 13 to 16 may not be recessed from the plate surface 12, and the end 21x of the base portion 21 may be on an extension of the plate surface 12.

[0059] In the above-mentioned second embodiment, a pair of protective members are disposed apart in the thickness direction of the door body 10, but a single protective member may be used. This protective member has a base portion with a width corresponding to the thickness of the door body, and a pair of buffer portions provided at both ends of the base portion in the width direction, and is fixed so that the base portion covers the entire lower end surface of the door body.

[0060] The present invention is not limited to the above-described embodiment, and various modifications are possible. For example, when attaching a pair of protective members to the lower edge of the door body, protective members of different shapes may be used. [Industrial Applicability]

[0061] The present invention can be applied to a revolving door that separates rooms. [Explanation of symbols]

[0062] 3 Door 10 Door body 11 Bottom surface of door body 12 Door body panel 13 Intersection 15 Receiving member 20, 20A, 20B, 20C, 20D, 20E, 20F Protective materials 21 Base 21a End of intersection 22 Buffer section 22a End of intersection 22b End away from intersection 23 protrusion 25 Hollow part 120, 120A, 120B, 120C, 120D Protective material 121 Base 121a Holding area (flat part) 121b Non-retention area 121x Intersection end 122 Buffer section 122a Intersection side 122b Far from the intersection 122x Intersection end 123 Groove 124 Engagement ridge 126 protrusion F Floor G Gap

Claims

1. A protective member provided along the lower edge of a door body, The door includes a base portion fixed to a lower end surface of the door body, and a buffer portion protruding downward from the base portion and facing a floor surface with a gap therebetween, A door protection member characterized in that the base portion has a flat plate portion at least on the intersection side between the lower end surface of the door body and the plate surface, and the buffer portion is provided below the flat plate portion.

2. the base portion and the buffer portion are made of the same flexible material; The door protection member according to claim 1, characterized in that the ends of the base portion and the buffer portion located near the intersection are connected to each other, and a hollow portion is formed between the base portion and the buffer portion.

3. 3. The door protection member according to claim 2, wherein a portion of the buffer portion farther from the intersection portion has a shape approaching the base portion.

4. 4. The door protection member according to claim 3, wherein an end of the buffer portion farther from the intersection portion is integrally connected to the base portion.

5. the buffer portion is made of a flexible material, and the base portion is made of a material harder than the buffer portion; 2. The door protection member according to claim 1, wherein the base portion has a holding region as the flat plate portion, and the buffer portion is provided in the holding region.

6. The door protection member according to claim 5, wherein the base portion has a flat plate shape over the entire area, and has a non-holding area that is continuous with the holding area and expands in a direction away from the intersection.

7. A door comprising a rotatably installed door body and the door protection member according to any one of claims 2 to 4, A door characterized in that an upright protrusion is formed on an end portion of the base portion on the side of the intersection, and this protrusion abuts against the plate surface of the door body.

8. A door comprising a rotatably installed door body and the door protection member according to claim 5 or 6, an end portion of the buffer portion on the side of the intersection portion covers an end portion of the base portion on the side of the intersection portion; A door characterized in that an upwardly rising protrusion is provided at an end of the buffer portion on the side of the intersection, and this protrusion abuts against the plate surface of the door main body.

9. A door comprising a rotatably installed door body and the door protection member according to any one of claims 1 to 6, The door, characterized in that the protection member is disposed at a position retreated from the plate surface of the door body.

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