Suspension fastener and suspension structure

Abstract

To provide a suspension fitting, suspension fastener and suspension structure capable of stabilizing an attitude of a second member and performing easy fixing to a suspension hanger.SOLUTION: A suspension fitting comprises: a shaft member having a rod-like shape; a first member having a first screw groove formed on a first wall surface that regulates a first through-hole, attached to the shaft member such that a first screw thread is screwed with the first screw groove; a second member disposed such that the shaft member passes through a second through-hole; a third member having a third screw groove formed on a third wall surface that regulates a third through-hole, attached to the shaft member such that the first screw thread is screwed with the third screw groove and the third member is located on the opposite side of the first member in a longitudinal direction of the shaft member; and an elastic member that generates an elastic force in a direction to increase a distance between the first member and the second member by coming into contact with the first member and the second member. At least one of the first member and the second member includes a projection extending toward the other member along the longitudinal direction of the shaft member.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to a hanging hardware, a hanging fixture, and a hanging structure. [Background technology]

[0002] A known hanging fixture has a hanging hardware fixed to a hanging tree (see, for example, Patent Document 1). The hanging hardware described in Patent Document 1 comprises an axial member (bolt), a first member (latching plate), and a second member (locking nut). The axial member has a rod-like shape. A screw thread is formed on the outer circumferential surface of the axial member. The first member and the second member are each attached by screwing onto the axial member. The first member and the second member are aligned in order in the longitudinal direction of the axial member. The first member is a rectangular flat plate.

[0003] The hanging beam includes a base wall (groove bottom) and a pair of support portions. The base wall has a U-shape in cross section. The pair of support portions protrude inward as lips from each tip of the base wall.

[0004] The first member is installed so that both longitudinal ends of the first member are hooked onto the lip, and the tip of the shaft member is pressed against the base wall. This secures the hanging hardware to the hanging tree. The first and second members sandwich the support part. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent Publication No. 2021-8945 Summary of the Invention [Problem to be solved by the invention]

[0006] Depending on the application and purpose of the hanging hardware, it may be desirable to move the second member relative to the support part without threading it onto the shaft member. Specifically, a configuration has been proposed in which the second member does not thread onto the shaft member, but the shaft member passes through the second member.

[0007] To secure a hanging hardware of this configuration to a hanging tree, the first member and the support member are in contact, and the second member is brought closer to the support member. Then, the second member is pressed onto the support member with a nut that is threaded onto the opposite side of the first member from the second member. When the second member is brought closer to the support member, the position of the second member relative to the support member becomes unstable. The second member rotates unintentionally relative to the first member. This makes it difficult to secure the hanging hardware to the hanging tree.

[0008] On the other hand, it is also possible for the user to directly support the second member on the support member, but in this case, it is not possible to easily fix the hanging hardware to the hanging tree.

[0009] The present disclosure provides a hanging hardware, a hanging fixture, and a hanging structure that can stabilize the posture of a second member and can be easily fixed to a hanging tree. [Means for solving the problem]

[0010] A hanging hardware according to the present disclosure comprises: a rod-shaped shaft member having a first screw thread formed on its outer peripheral surface; a first member having a first through hole, a first wall surface defining the first through hole having a first screw groove corresponding to the first screw thread formed thereon, the first member attached to the shaft member so that the first screw thread and the first screw groove threadably engage; a second member having a second through hole and arranged so that the shaft member passes through the second through hole; a third member having a third through hole, a third wall surface defining the third through hole having a third screw groove corresponding to the first screw thread formed thereon, the third screw groove corresponding to the first screw thread formed thereon, the first screw thread and the third screw groove threadably engage with each other, the third member attached to the shaft member so as to be positioned on the opposite side of the first member from the second member in the longitudinal direction of the shaft member; and an elastic member arranged between the first and second members, which comes into contact with the first and second members to generate an elastic force in a direction that increases the distance between the first and second members.

[0011] At least one of the first member and the second member includes a protrusion that protrudes toward the other member along the longitudinal direction of the shaft member. [Effects of the Invention]

[0012] The hanging hardware, hanging fixture, and hanging structure of the present disclosure can stabilize the posture of the second member and can be easily fixed to the hanging tree. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view of a suspension structure of the present disclosure including a suspension fixture of the present disclosure. [Figure 2] FIG. 2 is a perspective view of the hanging fixture. [Figure 3] FIG. 3 is a perspective view of the hanging hardware. [Figure 4A] 4A to 4D are process diagrams showing a method for assembling a hanging fixture, with Fig. 4A showing the state before step (1). [Figure 4B] FIG. 4B shows step (1). [Figure 4C] FIG. 4C shows step (2). [Figure 4D] FIG. 4D shows step (3). [Figure 5A] FIG. 5A is a cross-sectional view taken along line XX in FIG. 4B. [Figure 5B] FIG. 5B is a cross-sectional view taken along line YY in FIG. 4C. [Figure 6A] FIG. 6A is a cross-sectional view taken along line XX in FIG. 4B. [Figure 6B] FIG. 6B is a cross-sectional view taken along line YY in FIG. 4C. [Figure 7] FIG. 7 shows an embodiment in which the first longitudinal direction and the second longitudinal direction do not coincide. [Figure 8] FIG. 8 is a cross-sectional view of a modified hanging fixture. DETAILED DESCRIPTION OF THE INVENTION

[0014] [Outline of the embodiment] The hanging hardware of the present disclosure comprises: a rod-shaped shaft member having a first screw thread formed on its outer peripheral surface; a first member having a first through hole, a first wall surface that defines the first through hole having a first screw groove corresponding to the first screw thread formed thereon, and attached to the shaft member so that the first screw thread and the first screw groove threadably engage; a second member having a second through hole and arranged so that the shaft member passes through the second through hole; a third member having a third through hole, a third wall surface that defines the third through hole having a third screw groove corresponding to the first screw thread formed thereon, and the first screw thread and the third screw groove threadably engage with each other, and attached to the shaft member so that the third member is located on the opposite side of the first member from the second member in the longitudinal direction of the shaft member; and an elastic member that is arranged between the first and second members and that comes into contact with the first and second members to generate an elastic force that increases the distance between the first and second members.

[0015] At least one of the first member and the second member includes a protrusion that protrudes toward the other member along the longitudinal direction of the shaft member.

[0016] In the hanging hardware of the present disclosure, when the third member is rotated so that it approaches the first member while the third member and the second member are in contact, the protrusion comes into contact with the other member, thereby restricting the relative rotation of the second member with respect to the first member.

[0017] Therefore, the elastic member generates an elastic force in a direction that increases the distance between the first member and the second member. This allows the second member to come into contact with the third member and apply pressure to the third member. As a result, the second member is supported by the third member. This stabilizes the position of the second member.

[0018] Furthermore, when the third member is rotated so that it approaches the first member while the third member and the second member are in contact with each other, the protrusion contacts the other member, thereby restricting the relative rotation of the second member with respect to the first member. This eliminates the need for the user to support the second member. As a result, the hanging hardware can be easily fixed to the hanging tree.

[0019] In the above-mentioned hanging hardware, when the third member is rotated so that it approaches the first member while the third member and the second member are in contact, the protrusion may come into contact with the other member, thereby restricting the relative rotation of the second member with respect to the first member.

[0020] In the above-described hanging hardware, the elastic member may be a coil spring arranged to spirally surround the outer circumferential surface of the shaft member.

[0021] In this hanging hardware, the elastic member spirally surrounds the outer peripheral surface of the shaft member, so the posture of the second member can be stabilized with a simple configuration.

[0022] In the hanging hardware described above, when viewed in the longitudinal direction of the shaft member, the first member may have a first longitudinal direction and a first width direction that is perpendicular to the first longitudinal direction and shorter than the first longitudinal direction. The second member may have a second longitudinal direction and a second width direction that is perpendicular to the second longitudinal direction and shorter than the second longitudinal direction. The protrusion may regulate relative rotation of the second member with respect to the first member, thereby aligning the first longitudinal direction with the second longitudinal direction and aligning the first width direction with the second width direction.

[0023] When the second member rotates relative to the first member, the protrusion restricts the relative rotation of the second member with respect to the first member, so that the first longitudinal direction and the second longitudinal direction coincide with each other, and the first width direction and the second width direction coincide with each other.

[0024] A hanging fixture of the present disclosure comprises the above-mentioned hanging hardware and a base hardware to which the hanging hardware is fixed, the base hardware including a band-shaped base, a pair of side walls rising toward each other from both widthwise ends of the base, and a pair of support parts connected to the pair of side walls on the sides opposite to those connected to the base, rising toward each other from the pair of side walls and forming an opening between them, with part of the shaft member extending from the opening into the area sandwiched between the pair of side walls, and the hanging hardware being fixed to the base hardware by tightening a third member with the pair of support parts sandwiched between the first and second members.As a result, since this hanging fixture comprises the above-mentioned hanging hardware of the present disclosure, the work of fixing the hanging hardware to the base hardware is easy.

[0025] In the above-mentioned hanging fixture, when the third member is rotated so that it approaches the first member while the third member and the second member are in contact, the protrusion may come into contact with the other member and at least one of the pair of support portions, thereby restricting the relative rotation of the second member with respect to the first member.

[0026] The suspension structure of the present disclosure comprises two beams spaced apart, at least one of the suspension fixtures bridging the two beams, and a suspended member suspended by the suspension fixture. Because this suspension structure includes the suspension fixture, construction is easy.

[0027] [Specific example of embodiment] Specific examples of embodiments of the hanging hardware, hanging fixture, and hanging structure of the present disclosure will be described with reference to Figures 1 to 7. In the following drawings, the same or corresponding parts are designated by the same reference characters, and their description will not be repeated.

[0028] Fig. 1 is a perspective view of a hanging structure of the present disclosure including a hanging fixture of the present disclosure, Fig. 2 is a perspective view of a hanging hardware included in the hanging fixture, and Fig. 3 is a perspective view of a hanging hardware included in the hanging fixture.

[0029] Figures 4A to 4D are process diagrams showing a method for assembling a hanging fixture. Figure 4A shows an embodiment before step (1). Figure 4B shows step (1). Figure 4C shows step (2). Figure 4D shows step (3).

[0030] Fig. 5A is a cross-sectional view taken along line XX in Fig. 4B. Fig. 5B is a cross-sectional view taken along line YY in Fig. 4C. Fig. 6A is a cross-sectional view taken along line XX in Fig. 4B. Fig. 6B is a cross-sectional view taken along line YY in Fig. 4C. Fig. 7 shows an embodiment in which the first longitudinal direction and the second longitudinal direction do not coincide.

[0031] [Suspension structure 1] 1, for example, hanging structure 1 is a structure in which a ceiling-embedded suspended member 4 is placed in a ceiling recess. Specifically, hanging structure 1 includes two beams 2A, 2B, two hanging fixtures 3A, 3B, and one suspended member 4.

[0032] The two beams 2A and 2B are arranged with a gap between them. For example, the two beams 2A and 2B extend in the horizontal direction. The two beams 2A and 2B are parallel to each other.

[0033] The two suspension fixtures 3A and 3B bridge the two beams 2A and 2B, respectively. The two suspension fixtures 3A and 3B are arranged with a gap between them. The two suspension fixtures 3A and 3B are arranged with a gap between them in the extension direction of the two beams 2A and 2B.

[0034] Examples of suspended member 4 include ceiling-embedded equipment. Examples of suspended member 4 include air conditioners, ventilation fans, and racks for fixing wiring and piping. Suspended member 4 has, for example, a box shape.

[0035] [Details of Hanging Fixture 3A] The details of the hanging fixture 3A will be described below. The hanging fixture 3B has the same configuration as the hanging fixture 3A. The details of the hanging fixture 3B will be omitted.

[0036] As shown in FIG. 2, the hanging fixture 3A includes one base metal fitting 31 and two hanging metal fittings 32 and 33.

[0037] [Base bracket 31] As shown in FIG. 1, the base metal fitting 31 extends in the longitudinal direction LD. The longitudinal direction LD of the base portion 311 is included in a horizontal plane. Each end of the base metal fitting 31 in the longitudinal direction LD is joined to each of the two beams 2A, 2B. For example, the base metal fitting 31 is referred to as a hanging beam. As shown in FIG. 2, the base metal fitting 31 includes the base portion 311, a pair of side wall portions 312A, 312B, and a pair of support portions 313A, 313B.

[0038] [Base part 311] The base portion 311 has a strip shape. The base portion 311 extends in a longitudinal direction LD. The base portion 311 is a rectangular plate. The base portion 311 has a width direction WD that is perpendicular to the longitudinal direction LD. The width direction WD is included in a horizontal plane.

[0039] [Side wall portions 312A, 312B] 4A, the pair of side walls 312A, 312B rise up to face each other from both ends in the width direction WD of the base portion 311. For example, the pair of side walls 312A, 312B extend downward from both ends of the base portion 311 in the width direction WD.

[0040] [Support part 313A, 313B] Each of the pair of support portions 313A, 313B is connected to the side of each of the pair of side wall portions 312A, 312B opposite to the side connected to the base portion 311. For example, each of the pair of support portions 313A, 313B is connected to the lower end portions of each of the pair of side wall portions 312A, 312B.

[0041] The pair of support portions 313A, 313B rise up from the pair of side wall portions 312A, 312B so as to approach each other. For example, the pair of support portions 313A, 313B are inclined with respect to the width direction WD of the base portion 311. Each of the pair of support portions 313A, 313B inclines upward as it approaches the center of the base portion 311 in the width direction WD. In other words, the distance between the support portion 313A and the base portion 311 in the up-down direction becomes shorter as it moves away from the side wall portion 312A. The distance between the support portion 313B and the base portion 311 in the up-down direction becomes shorter as it moves away from the side wall portion 312B.

[0042] The pair of support portions 313A, 313B form an opening 314 therebetween. The opening 314 extends in the longitudinal direction LD of the base portion 311. The opening 314 leads to an internal area IA. The internal area IA is an area extending from the opening 314 to a region sandwiched between the pair of side wall portions 312A, 312B.

[0043] The base fitting 31 has the same structure as the hanging beam described in JP 2021-8945 A.

[0044] [Hanging hardware 32, 33] As shown in Figure 2, the hanging fittings 32 and 33 are fixed to the base fitting 31. For example, two hanging fittings 32 and 33 are each fixed to one base fitting 31. The hanging fittings 32 and 33 are arranged with a gap between them in the longitudinal direction LD. The hanging fitting 33 has a similar configuration to the hanging fitting 32. Details of the hanging fitting 33 are omitted.

[0045] [Details of Hanging Bracket 32] As shown in FIG. 3, the hanging hardware 32 includes a shaft member 321, a first member 322, a second member 323, a third member 324, an elastic member 325, and a pair of clamping members 326, 327.

[0046] [Shaft member 321] The shaft member 321 has a rod-like shape. As shown in FIG. 2, for example, the longitudinal direction of the shaft member 321 is along a direction perpendicular to the longitudinal direction LD and width direction WD of the base metallic part 31. Specifically, the longitudinal direction of the shaft member 321 is along the up-down direction. The shaft member 321 is along the vertical direction. As shown in FIG. 4D, in the hanging fixture 3A, a tip portion E, which is a part of the shaft member 321, enters the internal area IA of the base metallic part 31. In other words, the tip portion E is located within the internal area IA. The tip portion E includes the tip surface of the shaft member 321. The tip surface may be disposed with a gap between it and the base part 311 (see FIG. 4D) or may be in contact with the base part 311 (not shown in FIG. 4D).

[0047] As shown in Fig. 3, the shaft member 321 has an outer peripheral surface S. A first thread T is formed on the outer peripheral surface S of the shaft member 321. The material of the shaft member 321 is metal. Specifically, the shaft member 321 is a bolt without a head.

[0048] [First member 322] The first member 322 is attached to the shaft member 321. When viewed in the longitudinal direction of the shaft member 321, the first member 322 has a rectangular shape. The first member 322 is a plate. Specifically, the first member 322 has a rectangular shape. More specifically, the first member 322 is a metal plate in which regions including both ends in the first longitudinal direction LD1 are bent.

[0049] As shown in FIG. 5B, when viewed in the longitudinal direction of the shaft member 321, the first member 322 has a first longitudinal direction LD1 and a first width direction WD1. The first width direction WD1 is a direction perpendicular to the first longitudinal direction LD1. The first longitudinal direction LD1 and the first width direction WD1 of the first member 322 are perpendicular to the longitudinal direction of the shaft member 321. The first member 322 has a length L1 in the first longitudinal direction LD1 and a length W1 in the first width direction WD1. The length W1 of the first member 322 in the first width direction WD1 is shorter than the length L1 of the first member 322 in the first longitudinal direction LD1.

[0050] The first member 322 includes a flat plate portion 3221 and a pair of inclined plate portions 3222 and 3223.

[0051] <Flat plate part 3221> The flat plate portion 3221 is disposed in the middle portion (specifically, the center portion) of the first member 322 in the first longitudinal direction LD1. The flat plate portion 3221 has a rectangular shape. The flat plate portion 3221 extends along a horizontal plane.

[0052] The flat plate portion 3221 has a first through hole 3225. In other words, the first member 322 has the first through hole 3225. The first through hole 3225 is disposed in the center of the flat plate portion 3221. The center includes the center of gravity of the first member 322 when viewed in the thickness direction of the flat plate portion 3221. The first through hole 3225 is a round hole. As shown in FIG. 4D , the first through hole 3225 penetrates the flat plate portion 3221 in the thickness direction.

[0053] The flat plate portion 3221 has a first wall surface S1 that defines the first through hole 3225. In other words, the first member 322 has a first wall surface S1. The first wall surface S1 is also an inner circumferential surface. A first thread groove G1 is formed in the first wall surface S1. The first thread groove G1 corresponds to the first thread T.

[0054] <Slope plate part 3222, 3223> As shown in FIG. 5B, the inclined plate portions 3222 and 3223 are connected to both ends of the flat plate portion 3221 in the first longitudinal direction LD1. As shown in FIG. 4D, the inclined plate portions 3222 and 3223 are inclined with respect to a plane including the first longitudinal direction LD1 and the first width direction WD1. Specifically, the inclined plate portions 3222 and 3223 are inclined with respect to the horizontal plane. The inclined plate portion 3222 bends downward from the connection portion between the flat plate portion 3221 and the inclined plate portion 3222. The inclined plate portion 3223 bends downward from the connection portion between the flat plate portion 3221 and the inclined plate portion 3223.

[0055] The first member 322 is attached to the shaft member 321 so that the first screw thread T and the first screw groove G1 are threadedly engaged with each other. For example, the first member 322 is attached to the tip end E of the shaft member 321. The tip end E of the shaft member 321 is a portion that is disposed inside the internal area IA.

[0056] 5A, the length W1 of the first member 322 in the first width direction WD1 is shorter than the length L0 of the opening 314 in the width direction WD. As shown in FIG. 5B, the length L1 of the first member 322 in the first longitudinal direction LD1 is longer than the length L0 of the opening 314 in the width direction WD.

[0057] The material of the first member 322 is metal or resin, and preferably, the material of the first member 322 is metal.

[0058] [Second member 323] 3, the second member 323 is adjacent to the first member 322 when viewed in the longitudinal direction of the shaft member 321. The second member 323 includes a base portion 3231 and a pair of protrusions 328,329.

[0059] <Base part 3231> As shown in FIG. 6B , the base portion 3231 has a rectangular shape when viewed in the longitudinal direction of the shaft member 321. When viewed in the longitudinal direction of the shaft member 321, the base portion 3231 has the same outer shape as the second member 323. The second member 323 has a second longitudinal direction LD2 and a second width direction WD2. The second width direction WD2 is perpendicular to the second longitudinal direction LD2. The second longitudinal direction LD2 and the second width direction WD2 are perpendicular to the longitudinal direction of the shaft member 321. The length W2 of the base portion 3231 in the second width direction WD2 is shorter than the length L2 of the base portion 3231 in the second longitudinal direction LD2. In other words, the length W2 of the second member 323 in the second width direction WD2 is shorter than the length L2 of the second member 323 in the second longitudinal direction LD2.

[0060] 4B, the cross section of the base portion 3231 taken along the second width direction WD2 has a U-shape. The base portion 3231 includes a bottom plate 3232 and a pair of side plates 3233 and 3234.

[0061] 6A, the bottom plate 3232 has a rectangular shape when viewed in the longitudinal direction of the shaft member 321. The outer shape of the bottom plate 3232 forms the outer shape of the second member 323 when viewed in the longitudinal direction of the shaft member 321. The bottom plate 3232 has a second through-hole 3235. In other words, the second member 323 has the second through-hole 3235.

[0062] The shaft member 321 passes through the second through hole 3235. In other words, the second member 323 is arranged so that the shaft member 321 passes through the second through hole 3235. For example, the second through hole 3235 is a round hole. The second through hole 3235 is larger than the outer diameter of the shaft member 321. Specifically, the inner diameter of the second through hole 3235 is larger than the outer diameter of the shaft member 321.

[0063] As shown in FIG. 4B , the second through-hole 3235 is defined by a second wall surface (inner peripheral surface) 3236. For example, the second wall surface 3236 does not have a thread formed thereon. The second wall surface 3236 is a smooth cylindrical surface. The second wall surface 3236 is not threadedly engaged with the shaft member 321. In addition, the second wall surface 3236 is disposed at a distance from the outer peripheral surface S in the radial direction of the shaft member 321.

[0064] The pair of side plates 3233, 3234 are disposed at both ends of the bottom plate 3232 in the second width direction WD2, respectively. The pair of side plates 3233, 3234 rise from both ends of the bottom plate 3232 in the second width direction WD2, respectively. As shown in FIG. 6A , the pair of side plates 3233, 3234 are aligned along the longitudinal direction LD of the shaft member 321.

[0065] As shown in FIGS. 4B and 6B, the pair of protrusions 328, 329 are each connected to the base portion 3231. The protrusion 328 is connected to the side plate 3233. The protrusion 329 is connected to the side plate 3234. For example, the protrusion 328 protrudes from the side plate 3233. The protrusion 328 has a width shorter than the length of the side plate 3233 in the second longitudinal direction LD2. The width of the protrusion 328 is the length of the protrusion 328 in the second longitudinal direction LD2. The protrusion 328 is connected to a first end E1 of the side plate 3233 in the second longitudinal direction LD2. As shown in FIG. 4D, the protrusion 328 protrudes from the first end E1. As shown in FIG. 6B, the first end E1 and the second end E2 of the side plate 3233 are located on either side of the second through hole 3235 when viewed in the second width direction WD2.

[0066] As shown in FIG. 5B , for example, the protrusion 329 protrudes from the side plate 3234. The protrusions 328 and 329 extend in the same direction. The protrusion 329 has a width shorter than the length of the side plate 3234 in the second longitudinal direction LD2. The width of the protrusion 329 is the length of the protrusion 329 in the second longitudinal direction LD2. The protrusion 329 is connected to a fourth end E4 of the side plate 3234 in the second longitudinal direction LD2. The protrusion 329 protrudes from the fourth end E4. As shown in FIG. 6B , as viewed in the second width direction WD2, the third end E3 and the fourth end E4 of the side plate 3234 are located on either side of the second through hole 3235. The third end E3 faces the first end E1 in the second width direction WD2. The fourth end E4 faces the second end E2 in the second width direction WD2.

[0067] 6B, protrusion 329 is located on the opposite side of protrusion 328 with respect to second through-hole 3235. When viewed in the longitudinal direction of shaft member 321, protrusion 329 is point-symmetric with respect to protrusion 328, with second through-hole 3235 as the center.

[0068] The length L2 of the second member 323 in the second longitudinal direction LD2 is longer than the length L0 of the opening 314 in the width direction WD. As shown in Fig. 6A, the width W2 of the second member 323 in the second width direction WD2 is shorter than the length L0 of the opening 314 in the width direction WD.

[0069] The material of the second member 323 is metal or resin, and preferably, the material of the second member 323 is metal.

[0070] [Third member 324] 4D, the third member 324 is located on the opposite side of the second member 323 from the first member 322 in the longitudinal direction of the shaft member 321. In the longitudinal direction of the shaft member 321, the first member 322, the second member 323, and the third member 324 are arranged in this order.

[0071] The third member 324 is attached to the shaft member 321. The third member 324 has a third through hole 3241. The third member 324 has a third wall surface S3 that defines the third through hole 3241. The third wall surface S3 is also the inner circumferential surface. A third screw groove G3 is formed in the third wall surface S3. The third screw groove G3 corresponds to the first screw thread T. The first screw thread T and the third screw groove G3 are threadedly engaged with each other.

[0072] The material of the third member 324 is metal or resin. Preferably, the material of the third member 324 is metal. Specifically, the third member is a nut.

[0073] [Elastic member 325] The elastic member 325 is disposed between the first member 322 and the second member 323. More specifically, when viewed in the longitudinal direction of the shaft member 321, the elastic member 325 is disposed between the flat plate portion 3221 and the bottom plate 3232.

[0074] The elastic member 325 is disposed so as to spirally surround the outer circumferential surface S of the shaft member 321. For example, the elastic member 325 contacts the flat plate portion 3221 of the first member 322 and the bottom plate 3232 of the second member 323.

[0075] The elastic member 325 generates an elastic force. The direction of the elastic force is a direction in which the elastic member 325 comes into contact with the first member 322 and the second member 323, thereby increasing the distance between the first member 322 and the second member 323. More specifically, the direction of the elastic force is a direction in which the elastic member 325 comes into contact with the flat plate portion 3221 and the bottom plate 3232, thereby increasing the distance between the first member 322 and the second member 323.

[0076] The elastic member 325 is made of a material such as metal or resin, and is a coil spring.

[0077] [Pair of clamping members 326, 327] 3, a pair of clamping members 326, 327 sandwich and hold claws (not shown) provided on suspended member 4. When viewed in the longitudinal direction of shaft member 321, third member 324, clamping member 326, and clamping member 327 are arranged in this order.

[0078] The clamping member 326 includes a nut 61, a washer 62, and a vibration-isolating material 63. The nut 61 is screwed onto the shaft member 321. The washer 62 is disposed between the nut 61 and the vibration-isolating material 63. The vibration-isolating material 63 is fixed to the washer 62. The shaft member 321 passes through the vibration-isolating material 63.

[0079] 2, the clamping member 327 includes a nut 71, a washer 72, and a vibration-isolating material 73. The nut 71 is screwed onto the shaft member 321. The washer 72 is disposed between the nut 71 and the vibration-isolating material 73. The vibration-isolating material 73 is fixed to the washer 72. The vibration-isolating material 73 is passed through the shaft member 321. When viewed in the longitudinal direction of the shaft member 321, the vibration-isolating material 73 faces the vibration-isolating material 63.

[0080] [How to assemble the hanging fixture 3A] The method for assembling the hanging fixture 3A includes steps (1), (2), and (3). In the method for assembling the hanging fixture 3A, steps (1), (2), and (3) are carried out in this order. <Process (1)> In step (1), as shown in FIGS. 4A and 4B, the tip E of the shaft member 321 and the first member 322 are inserted into the internal area IA.

[0081] In step (1), first, as shown in Fig. 3, the hanging hardware 32 is prepared. To prepare the hanging hardware 32, a first member 322, an elastic member 325, a second member 323, a third member 324, and a pair of clamping members 326, 327 are arranged on the shaft member 321. More specifically, the first member 322 and the third member 324 are attached (screwed) to the shaft member 321. The shaft member 321 is then passed through (inserted into) the second member 323 and the elastic member 325.

[0082] 4A, at least one of the first member 322 and the second member 323 is rotated relative to the shaft member 321 so that the protruding portion 328 overlaps the first member 322 when viewed in the second width direction WD2. The protruding portion 329 overlaps the first member 322 when viewed in the second width direction WD2.

[0083] When at least one of the first member 322 and the second member 323 rotates, the first member 322 and the second member 323 move closer to each other, causing the elastic member 325 to come into contact with the flat plate portion 3221 and the bottom plate 3232. The elastic member 325 generates the above-mentioned elastic force in the first member 322 and the second member 323.

[0084] 7, even if the first longitudinal direction LD1 of the first member 322 and the second longitudinal direction LD2 of the second member 323 are different (mismatched), the first longitudinal direction LD1 and the second longitudinal direction LD2 become aligned as shown in FIG. 6A due to contact of the pair of protrusions 328, 329 with the first member 322 based on rotation of at least one of the first member 322 and the second member 323. The first width direction WD1 and the second width direction WD2 become aligned.

[0085] 4B, in step (1), the tip portion E of the shaft member 321 and the first member 322 pass through the opening 314 and are placed in the internal area IA.

[0086] 6A, a first longitudinal direction LD1 of the first member 322 and a second longitudinal direction LD2 of the second member 323 each coincide with the longitudinal direction LD of the base metallic fitting 31. A first width direction WD1 of the first member 322 and a second width direction WD2 of the second member 323 each coincide with the width direction WD of the base metallic fitting 31.

[0087] <Process (2)> 5B and 6B, the first longitudinal direction LD1 of the first member 322 and the second longitudinal direction LD2 of the second member 323 are each aligned with the width direction WD of the base metallic fitting 31. The first width direction WD1 of the first member 322 and the second width direction WD2 of the second member 323 are each aligned with the longitudinal direction LD of the base metallic fitting 31.

[0088] For example, as shown by the arrows in Figures 5A and 6A, the first member 322 and the second member 323 are rotated relative to the base metallic part 31. Specifically, the first member 322 and the second member 323 are rotated 90 degrees.

[0089] To rotate the first member 322 and the second member 323, the shaft member 321 is rotated. At this time, the first member 322 and the second member 323 are given an elastic force based on the elastic member 325. Therefore, the first member 322 and the second member 323 are prevented from approaching each other. Specifically, the second member 323 comes into contact with the third member 324 based on the elastic force that moves it toward the third member 324. Therefore, relative rotation among the shaft member 321, the first member 322, and the second member 323 is relatively prevented.

[0090] 5B and 6B, the protrusions 328 and 329 do not come into contact with the pair of support portions 313A and 313B during the above-described rotation of the first member 322 and the second member 323. As shown in FIGS. 6A and 6B, the rotation trajectories of the protrusions 328 and 329 are spaced apart from the pair of support portions 313A and 313B.

[0091] In step (2), as shown in FIGS. 4C and 5B, the inclined plate portions 3222 and 3223 of the first member 322 face the pair of support portions 313A and 313B, respectively. The second end E2 and the fourth end E4 of the second member 323 face the support portion 313A. The first end E1 and the third end E3 of the second member 323 face the support portion 313B. As a result, the support portion 313A is positioned between the inclined plate portion 3222 of the first member 322 and the second end E2 and the fourth end E4 of the second member 323. The support portion 313B is positioned between the inclined plate portion 3223 of the first member 322 and the first end E1 and the third end E3 of the second member 323.

[0092] <Process (3)> 4D , in step (3), the third member 324 is rotated so that the third member 324 approaches the first member 322 while the third member 324 and the second member 323 are in contact with each other. When the third member 324 is rotated while the third member 324 and the second member 323 are in contact with each other, the second member 323 tends to rotate. The pair of protrusions 328, 329 come into contact with the first member 322, thereby restricting the relative rotation of the second member 323 with respect to the first member 322.

[0093] As shown in FIG. 5B, the pair of protrusions 328, 329 continue to have the first longitudinal direction LD1 and the second longitudinal direction LD2 aligned, and the first width direction WD1 and the second width direction WD2 aligned, by restricting the relative rotation of the second member 323 with respect to the first member 322.

[0094] Then, the third member 324 is tightened with the pair of supports 313A, 313B sandwiched between the first member 322 and the second member 323, thereby fixing the hanging fitting 32 to the base fitting 31. For example, as the third member 324 rotates, the second member 323 approaches the first member 322, causing the second end E2 and fourth end E4 of the second member 323 to come into contact with the support 313A. The first end E1 and third end E3 come into contact with the support 313B. By tightening the third member 324, the second end E2 and fourth end E4 and the inclined plate portion 3222 press the support 313A from both vertical sides. The first end E1 and third end E3 and the inclined plate portion 3223 press the support 313B from both vertical sides. This fixes the hanging fitting 32 to the base fitting 31. The hanging metal fitting 33 is fixed to the base metal fitting 31.

[0095] The above-described method for assembling the hanging fixture 3A corresponds to a method for manufacturing the hanging fixture 3A.

[0096] [Variations] The protrusion may be included in the first member, in which case the protrusion protrudes toward the second member.

[0097] The number of protrusions may be one.

[0098] The elastic member may be a leaf spring. In this case, the shaft member does not pass through the elastic member. The elastic member is fixed to, for example, the first member or the second member.

[0099] The elastic member may be rubber.

[0100] Fig. 8 is a cross-sectional view of a modified hanging fixture. As shown in Fig. 8, in the hanging fixture 3A in the hanging structure 1, each of the protrusions 329 and 328 may further contact each of the support portions 313A and 313B. Specifically, the protrusion 329 contacts the support portion 313A of the base metallic part 31. The protrusion 328 contacts the support portion 313B of the base metallic part 31.

[0101] Although not shown, the suspension structure 1 may include one suspension fixture 3A.

[0102] The embodiments of the present disclosure are illustrative in all respects and should not be construed as limiting in any respect. The scope of the present invention is defined by the claims, and it is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0103] 1 Hanging structure, 2A, 2B Beam, 3A, 3B Hanging fixture, 311 Base portion, 312, 312A, 312B Side wall portion, 313A, 313B Support portion, 314 Opening, 321 Shaft member, 322 First member, 323 Second member, 324 Third member, 325 Elastic member, 326, 327 Clamping member, 328, 329 Protruding portion, 3221 Flat plate portion, 3222, 3223 Inclined plate portion, 3225 First through hole, 3231 Base portion, 3232 Bottom plate, 3233, 3234 Side plate, 3235 Second through hole, 3236 Second wall surface, 3241 Third through hole, 31 Base metal fittings, 32, 33 Hanging metal fittings, 4 Hanged member, 61, 71 Nuts, 62, 72 Washers, 63, 73 Vibration-damping material, E Tip portion, E1 First end, E2 Second end, E3 Third end, E4 Fourth end, G1 First thread groove, G3 Third thread groove, IA Internal region, LD Longitudinal direction, L1 First longitudinal direction, L2 Second longitudinal direction, S Outer circumferential surface, S1 First wall surface, S3 Third wall surface, T First thread, WD Width direction, WD1 First width direction, WD2 Second width direction

Claims

1. a rod-shaped shaft member having a first thread formed on an outer peripheral surface thereof; a first member having a first through hole, a first wall surface that defines the first through hole, a first thread groove corresponding to the first screw thread formed on the first wall surface, and attached to the shaft member so that the first screw thread and the first screw groove are threadedly engaged; a second member having a second through hole and arranged so that the shaft member passes through the second through hole; a third member having a third through hole, a third wall surface that defines the third through hole, a third thread groove corresponding to the first thread groove formed thereon, the first thread groove and the third thread groove threadably engaging with each other, and attached to the shaft member so as to be positioned on the opposite side of the first member from the second member in the longitudinal direction of the shaft member; an elastic member that is disposed between the first member and the second member and that comes into contact with the first member and the second member to generate an elastic force in a direction that increases the distance between the first member and the second member; At least one of the first member and the second member includes a protrusion that protrudes toward the other member along the longitudinal direction of the shaft member.

2. 2. The hanging hardware according to claim 1, wherein when the third member is rotated so that it approaches the first member while the third member and the second member are in contact with each other, the protrusion comes into contact with the other member, thereby restricting the relative rotation of the second member with respect to the first member.

3. 3. The hanging hardware according to claim 1, wherein the elastic member is a coil spring arranged to spirally surround the outer circumferential surface of the shaft member.

4. When viewed in the longitudinal direction of the shaft member, the first member has a first longitudinal direction and a first width direction that is perpendicular to the first longitudinal direction and shorter than the first longitudinal direction; the second member has a second longitudinal direction and a second width direction that is perpendicular to the second longitudinal direction and shorter than the second longitudinal direction; 3. The hanging hardware according to claim 1, wherein the protrusion regulates the relative rotation of the second member with respect to the first member, thereby aligning the first longitudinal direction with the second longitudinal direction and aligning the first width direction with the second width direction.

5. The hanging hardware according to claim 1; a base metal fitting to which the hanging metal fitting is fixed, The base metal fitting is a base portion having a band-like shape; a pair of side wall portions rising up from both ends of the base portion in the width direction so as to face each other; a pair of support portions connected to the pair of side wall portions opposite to the side connected to the base portion, rising from the pair of side wall portions so as to approach each other and forming an opening therebetween, The hanging hardware is A hanging fixture in which a portion of the shaft member extends from the opening into the area sandwiched between the pair of side wall portions, and the third member is tightened while sandwiching the pair of support portions between the first member and the second member, thereby fixing the hanging fixture to the base metal fittings.

6. 6. The hanging fixture according to claim 5, wherein when the third member is rotated so that it approaches the first member while the third member and the second member are in contact with each other, the protrusion contacts the other member and at least one of the pair of support portions, thereby restricting the relative rotation of the second member with respect to the first member.

7. Two beams spaced apart; At least one suspension fixture according to claim 5 or claim 6 that bridges the two beams; a suspended member suspended by the suspension fixture; A suspension structure comprising:

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