Suspension fixture and suspension structure

Abstract

Provided are a suspension fitting, a suspension fixture, and a suspension structure that can stably hold the posture of a second member and can be easily fixed to a suspension beam. 【Solution means】A shaft member having a rod-like shape, a first member attached to the shaft member such that a first thread groove is formed in a first wall surface that is a wall surface defining a first through hole and a first thread crest engages with the first thread groove, a second member disposed such that the shaft member passes through a second through hole, a third thread groove is formed in a third wall surface that is a wall surface defining a third through hole, the first thread crest engages with the third thread groove, and a third member attached to the shaft member so as to be located on the side opposite to the first member in the longitudinal direction of the shaft member, and an elastic member that generates an elastic force in a direction to increase the distance between the first member and the second member by contacting the first member and the second member. At least one of the first member and the second member includes a protruding portion that protrudes toward the other member along the longitudinal direction of the shaft member.

Description

Technical Field

[0001] The present disclosure relates to hanging fittings, hanging fixtures, and hanging structures.

Background Art

[0002] A hanging fixture in which a hanging fitting is fixed to a hanging tree is known (see, for example, Patent Document 1). The hanging fitting described in Patent Document 1 includes a shaft member (bolt), a first member (hooking plate), and a second member (locknut). The shaft member has a rod-like shape. A thread is formed on the outer peripheral surface of the shaft member. Each of the first member and the second member is screwed onto the shaft member and attached. The first member and the second member are arranged in order in the longitudinal direction of the shaft member. The first member is a rectangular flat plate.

[0003] The hanging tree includes a base wall (groove bottom) and a pair of support portions. The base wall has a U-shaped cross section. The pair of support portions protrude inward as lips from the respective tips of the base wall.

[0004] The first member is installed such that both ends of the first member in the longitudinal direction are caught by the lips, and the tip of the shaft member is pressed against the base wall. Thereby, the hanging fitting is fixed to the hanging tree. The first member and the second member sandwich the support portion.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] Depending on the use and purpose of the suspension fitting, there may be a case where the second member is moved relative to the support portion without being screwed onto the shaft member. Specifically, a configuration is proposed in which the second member is not screwed onto the shaft member and the shaft member penetrates the second member.

[0007] In order to fix the suspension fitting of this configuration to the suspension tree, with the first member and the support member in contact, the second member is brought closer to the support member. Then, the second member is pressed against the support member with a nut screwed on the opposite side of the first member as viewed from the second member. When the second member is brought closer to the support member, the posture of the second member with respect to the support member becomes unstable. The second member rotates unintentionally with respect to the first member. Then, the suspension fitting cannot be easily fixed to the suspension tree.

[0008] On the other hand, it is also proposed that the user directly supports the second member on the support member. In this case, the suspension fitting cannot be easily fixed to the suspension tree.

[0009] The present disclosure provides a suspension fitting, a suspension fixture, and a suspension structure that can stabilize the posture of the second member and can be easily fixed to a suspension tree.

Means for Solving the Problems

[0010] The suspension fitting according to the present disclosure includes a rod-shaped shaft member having a first thread formed on an outer peripheral surface, a first member having a first through hole and having a first thread groove corresponding to the first thread formed on a first wall surface that defines the first through hole, and the first member being attached to the shaft member such that the first thread and the first thread groove are screwed together, a second member having a second through hole and being disposed such that the shaft member penetrates the second through hole, a third member having a third through hole and having a third thread groove corresponding to the first thread formed on a third wall surface that defines the third through hole, and the third member being attached to the shaft member such that the first thread and the third thread groove are screwed together and the third member is located on the opposite side of the first member as viewed from the second member in the longitudinal direction of the shaft member, and an elastic member disposed between the first member and the second member and generating an elastic force in a direction to increase the distance between the first member and the second member by contacting the first member and the second member.

[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.

Advantages of the Invention

[0012] The hanging fitting, 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 Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4A

Figure 4B

Figure 4C

Figure 4D

Figure 5A

Figure 5B

Figure 6A

Figure 6B

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0014] [Overview of Embodiment] The suspension fitting of the present disclosure includes a shaft member having a rod-like shape with a first thread formed on its outer peripheral surface, a first member having a first through-hole and a first wall surface that defines the first through-hole, and a first thread groove corresponding to the first thread is formed on the first wall surface, and the first member is attached to the shaft member so that the first thread and the first thread groove are screwed together, a second member having a second through-hole and arranged so that the shaft member penetrates through the second through-hole, a third member having a third through-hole and a third wall surface that defines the third through-hole, and a third thread groove corresponding to the first thread is formed on the third wall surface, and the first thread and the third thread groove are screwed together, and the third member is attached to the shaft member so as to be located on the side opposite to the first member when viewed from the second member in the longitudinal direction of the shaft member, and an elastic member disposed between the first member and the second member and generating an elastic force in a direction to increase the distance between the first member and the second member by contacting the first member and the second member.

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

[0016] In the suspension fitting of the present disclosure, when the third member is rotated so that the third member approaches the first member in a state where the third member is in contact with the second member, the protruding portion contacts 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 to increase the distance between the first member and the second member. Then, the second member can contact the third member and apply pressure to the third member. As a result, the second member is supported by the third member. Thereby, the posture of the second member can be stabilized.

[0018] Also, when the third member is rotated so as to approach the first member while the third member and the second member are in contact, the protruding portion restricts the relative rotation of the second member with respect to the first member by contacting the other member. Therefore, it is not necessary for the user to support the second member. As a result, the suspension fitting is easily fixed to the suspension beam.

[0019] In the above suspension fitting, when the third member is rotated so as to approach the first member while the third member and the second member are in contact, the protruding portion may restrict the relative rotation of the second member with respect to the first member by contacting the other member.

[0020] In the above suspension fitting, the elastic member may be a coil spring arranged so as to helically surround the outer peripheral surface of the shaft member.

[0021] In this suspension fitting, since the elastic member helically surrounds the outer peripheral surface of the shaft member, the posture of the second member can be stabilized with a simple configuration.

[0022] In the above suspension fitting, 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 in length 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 in length than the second longitudinal direction. The protruding portion may make the first longitudinal direction coincide with the second longitudinal direction and the first width direction coincide with the second width direction by restricting the relative rotation of the second member with respect to the first member.

[0023] When the second member rotates with respect to the first member, the protruding portion restricts the relative rotation of the second member with respect to the first member. Then, the first longitudinal direction coincides with the second longitudinal direction, and the first width direction coincides with the second width direction.

[0024] The suspension fixture of the present disclosure includes the above-described suspension fitting and a base fitting to which the suspension fitting is fixed. The base fitting includes a base portion having a belt-like shape, a pair of side wall portions rising from both ends in the width direction of the base portion so as to face each other, and a pair of side wall portions connected to the side opposite to the side connected to the base portion, rising so as to approach each other, and including a pair of support portions forming an opening therebetween. A part of the shaft member of the suspension fitting enters a region sandwiched between the pair of side wall portions from the opening, and the third member is tightened while sandwiching the pair of support portions between the first member and the second member, thereby being fixed to the base fitting. As a result, in this suspension fixture, since the suspension fitting of the present disclosure is provided, the operation of fixing the suspension fitting to the base fitting becomes easy.

[0025] In the above suspension fixture, when the third member is rotated so that the third member approaches the first member in a state where the third member and the second member are in contact, the protrusion contacts at least one of the other member and 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 includes two beams arranged at intervals, at least one of the above suspension fixtures bridging the two beams, and a suspended member suspended by the suspension fixture. Since this suspension structure includes the above suspension fixture, the construction becomes easy.

[0027] [Specific Examples of Embodiments] Specific examples of embodiments of the suspension fitting, suspension fixture, and suspension structure of the present disclosure will be described with reference to FIGS. 1 to 7. In the following drawings, the same or corresponding parts are denoted by the same reference numerals and their descriptions will not be repeated.

[0028] FIG. 1 is a perspective view of the suspension structure of the present disclosure including the suspension fixture of the present disclosure. FIG. 2 is a perspective view of the suspension fitting provided in the suspension fixture. FIG. 3 is a perspective view of the suspension fitting provided in the suspension fixture.

[0029] Figures 4A to 4D are process diagrams showing a method of assembling a suspension fixture. Figure 4A shows the state before step (1). Figure 4B shows step (1). Figure 4C shows step (2). Figure 4D shows step (3).

[0030] Figure 5A is a cross-sectional view taken along the line X-X of Figure 4B. Figure 5B is a cross-sectional view taken along the line Y-Y of Figure 4C. Figure 6A is a cross-sectional view taken along the line X-X of Figure 4B. Figure 6B is a cross-sectional view taken along the line Y-Y of Figure 4C. Figure 7 shows a mode in which the first longitudinal direction and the second longitudinal direction do not match.

[0031] [Suspension structure 1] As shown in Figure 1, for example, the suspension structure 1 is a structure in which a ceiling-embedded suspended member 4 is arranged in the ceiling cavity. Specifically, the suspension structure 1 includes two beams 2A, 2B, two suspension fixtures 3A, 3B, and one suspended member 4.

[0032] The two beams 2A, 2B are arranged at intervals. For example, the two beams 2A, 2B extend in the horizontal direction. The two beams 2A, 2B are parallel.

[0033] The two suspension fixtures 3A, 3B respectively bridge the two beams 2A, 2B. The two suspension fixtures 3A, 3B are arranged at intervals. The two suspension fixtures 3A, 3B are arranged at intervals in the direction in which the two beams 2A, 2B extend.

[0034] Examples of the suspended member 4 include ceiling-embedded devices. Examples of the suspended member 4 include an air conditioner, a ventilation fan, and a rack for fixing wiring and piping. The suspended member 4 has, for example, a box shape.

[0035] [Details of suspension fixture 3A] Details of the suspension fixture 3A will be described. Note that the suspension fixture 3B has the same configuration as the suspension fixture 3A. Details of the suspension fixture 3B are omitted.

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

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

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

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

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

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

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

[0043] The base fitting 31 has the same structure as the suspension pole described in Japanese Patent Application Laid-Open No. 2021-8945.

[0044] [Suspension fittings 32, 33] As shown in FIG. 2, the suspension fittings 32 and 33 are fixed to the base fitting 31. For example, the two suspension fittings 32 and 33 are respectively fixed to one base fitting 31. The suspension fittings 32 and 33 are arranged at intervals in the longitudinal direction LD. The suspension fitting 33 has the same configuration as the suspension fitting 32. Details of the suspension fitting 33 are omitted.

[0045] [Details of the suspension fitting 32] As shown in FIG. 3, the suspension fitting 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 and 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 follows a direction orthogonal to the longitudinal direction LD and the width direction WD of the base fitting 31. Specifically, the longitudinal direction of the shaft member 321 follows the vertical direction. The shaft member 321 is along the vertical direction. As shown in FIG. 4D, in the suspension fixture 3A, the tip end portion E, which is a part of the shaft member 321, enters the internal region IA in the base fitting 31. That is, the tip end portion E is located within the internal region IA. The tip end portion E includes the tip end surface of the shaft member 321. The tip end surface may be arranged at a distance from the base portion 311 (see FIG. 4D), or may be in contact with the base portion 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 orthogonal 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 portion 3221> The flat plate portion 3221 is disposed at an intermediate portion (specifically, the central 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 at the central portion of the flat plate portion 3221. The central portion 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 the first wall surface S1. The first wall surface S1 is also an inner circumferential surface. A first thread groove G1 is formed on the first wall surface S1. The first thread groove G1 corresponds to a first thread crest T.

[0054] <Inclined plate portions 3222, 3223> As shown in FIG. 5B, each of the inclined plate portions 3222 and 3223 is connected to each of both ends of the flat plate portion 3221 in the first longitudinal direction LD1. As shown in FIG. 4D, each of the inclined plate portions 3222 and 3223 is inclined with respect to a plane including the first longitudinal direction LD1 and the first width direction WD1. Specifically, each of the inclined plate portions 3222 and 3223 is inclined with respect to the above-described 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 such that the first thread T and the first thread groove G1 are screwed together. 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 disposed inside the internal region IA.

[0056] As shown in FIG. 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. Preferably, the material of the first member 322 is metal.

[0058] [Second member 323] As shown in FIG. 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 protruding portions 328, 329.

[0059] [Base portion 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. The base portion 3231 has the same outer shape as the second member 323 when viewed in the longitudinal direction of the shaft member 321. The second member 323 has a second longitudinal direction LD2 and a second width direction WD2. The second width direction WD2 is a direction perpendicular to the second longitudinal direction LD2. The second longitudinal direction LD2 and the second width direction WD2 are orthogonal 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] As shown in FIG. 4B, the base portion 3231 has a U-shape in a cross-section along the second width direction WD2. The base portion 3231 includes a bottom plate 3232 and a pair of side plates 3233, 3234.

[0061] As shown in FIG. 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 a 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 such 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, no thread is formed on the second wall surface 3236. The second wall surface 3236 is a smooth cylindrical surface. The second wall surface 3236 is not screwed to the shaft member 321. In the radial direction of the shaft member 321, the second wall surface 3236 is arranged at a distance from the outer peripheral surface S.

[0064] Each of the pair of side plates 3233, 3234 is arranged at each of both ends of the bottom plate 3232 in the second width direction WD2. Each of the pair of side plates 3233, 3234 rises from both ends of the bottom plate 3232 in the second width direction WD2. As shown in FIG. 6A, the pair of side plates 3233, 3234 extends along the longitudinal direction LD of the shaft member 321.

[0065] As shown in FIGS. 4B and 6B, a pair of protrusions 328, 329 are respectively 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 the 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, when viewed in the second width direction WD2, each of the first end E1 and the second end E2 of the side plate 3233 is disposed on each side of the second through hole 3235.

[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 the 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, when viewed in the second width direction WD2, the third end E3 and the fourth end E4 of the side plate 3234 are respectively disposed on both sides 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] As shown in FIG. 6B, the protrusion 329 is located on the opposite side of the protrusion 328 with respect to the second through hole 3235. When viewed in the longitudinal direction of the shaft member 321, the protrusion 329 is point-symmetrical with respect to the protrusion 328 about the second through hole 3235.

[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. Preferably, the material of the second member 323 is metal.

[0070] [Third member 324] As shown in FIG. 4D, the third member 324 is located on the side opposite to the first member 322 as viewed from the second member 323 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 an inner peripheral surface. A third thread groove G3 is formed in the third wall surface S3. The third thread groove G3 corresponds to the first thread crest T. The first thread crest T and the third thread groove G3 are screwed together.

[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. 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 helically surround the outer peripheral 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 such that by contacting the first member 322 and the second member, the distance between the first member 322 and the second member is increased. Specifically, the direction of the elastic force is such that by contacting the flat plate portion 3221 and the bottom plate 3232, the distance between the first member 322 and the second member 323 is increased.

[0076] The material of the elastic member 325 is, for example, metal or resin. The elastic member 325 is a coil spring.

[0077] [A pair of clamping members 326, 327] As shown in FIG. 3, a pair of clamping members 326, 327 clamp by sandwiching a claw (not shown) provided on the suspended member 4 vertically. When viewed in the longitudinal direction of the shaft member 321, the third member 324, the clamping member 326, and the clamping member 327 are arranged in this order.

[0078] The clamping member 326 includes a nut 61, a washer 62, and a vibration isolator 63. The nut 61 is screwed onto the shaft member 321. The washer 62 is disposed between the nut 61 and the vibration isolator 63. The vibration isolator 63 is fixed to the washer 62. The vibration isolator 63 is penetrated by the shaft member 321.

[0079] As shown in FIG. 2, the clamping member 327 includes a nut 71, a washer 72, and a vibration isolator 73. The nut 71 is screwed onto the shaft member 321. The washer 72 is disposed between the nut 71 and the vibration isolator 73. The vibration isolator 73 is fixed to the washer 72. The vibration isolator 73 is penetrated by the shaft member 321. When viewed in the longitudinal direction of the shaft member 321, the vibration isolator 73 faces the vibration isolator 63.

[0080] [Assembly method of the suspension fixture 3A] The assembly method of the suspension fixture 3A includes step (1), step (2), and step (3). In the assembly method of the suspension fixture 3A, step (1), step (2), and step (3) are performed in this order. <Step (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 made to enter the internal region IA.

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

[0082] As shown in FIG. 4A, at least one of the first member 322 and the second member 323 is rotated with respect to the shaft member 321, and in the second width direction WD2, the protruding portion 328 is overlapped with the first member 322. In the second width direction WD2, the protruding portion 329 is overlapped with the first member 322.

[0083] Due to the first member 322 and the second member 323 approaching each other based on the rotation of at least one of the first member 322 and the second member 323, the elastic member 325 comes into contact with the flat plate portion 3221 and the bottom plate 3232. The elastic member 325 generates the above-described elastic force on the first member 322 and the second member 323.

[0084] As shown in FIG. 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 (do not match), due to the contact of the pair of protruding portions 328, 329 with the first member 322 based on the rotation of at least one of the first member 322 and the second member 323, as shown in FIG. 6A, the first longitudinal direction LD1 and the second longitudinal direction LD2 match. The first width direction WD1 and the second width direction WD2 match.

[0085] As shown in FIG. 4B, in step (1), the tip E of the shaft member 321 and the first member 322 pass through the opening 314 and are arranged within the internal region IA. The protruding portions 328, 329 cross the opening 314.

[0086] As shown in FIG. 6A, each of the first longitudinal direction LD1 of the first member 322 and the second longitudinal direction LD2 of the second member 323 coincides with the longitudinal direction LD of the base fitting 31. Each of the first width direction WD1 of the first member 322 and the second width direction WD2 of the second member 323 coincides with the width direction WD of the base fitting 31.

[0087] <Step (2)> Next, in step (2), as shown in FIGS. 5B and 6B, each of the first longitudinal direction LD1 of the first member 322 and the second longitudinal direction LD2 of the second member 323 is made to coincide with the width direction WD of the base fitting 31. Each of the first width direction WD1 of the first member 322 and the second width direction WD2 of the second member 323 is made to coincide with the longitudinal direction LD of the base fitting 31.

[0088] For example, as shown by the arrows in FIGS. 5A and 6A, the first member 322 and the second member 323 are rotated with respect to the base fitting 31. Specifically, the first member 322 and the second member 323 are rotated by 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 suppressed from approaching each other. Specifically, the second member 323 contacts the third member 324 based on the elastic force approaching the third member 324. Therefore, the relative rotation of the shaft member 321, the first member 322, and the second member 323 is relatively suppressed.

[0090] As shown in FIGS. 5B and 6B, in the above-described rotation of the first member 322 and the second member 323, the protrusions 328, 329 do not contact the pair of support portions 313A, 313B. As shown in FIGS. 6A and 6B, the rotation trajectories of each of the protrusions 328 and 329 are arranged at intervals from the pair of support portions 313A, 313B.

[0091] In step (2), as shown in FIGS. 4C and 5B, each of the inclined plate portions 3222 and 3223 of the first member 322 faces a pair of support portions 313A and 313B. 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. Thereby, 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] <Step (3)> As shown in FIG. 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 is in contact with the second member 323. When the third member 324 is rotated while the third member 324 is in contact with the second member 323, the second member 323 tends to rotate. When the pair of protrusions 328 and 329 come into contact with the first member 322, the relative rotation of the second member 323 with respect to the first member 322 is restricted.

[0093] As shown in FIG. 5B, due to the relative rotation of the second member 323 with respect to the first member 322 being restricted, the first longitudinal direction LD1 and the second longitudinal direction LD2 continue to coincide, and the first width direction WD1 and the second width direction WD2 continue to coincide.

[0094] Thereafter, the third member 324 is tightened while sandwiching a pair of support portions 313A and 313B between the first member 322 and the second member 323, whereby the suspension fitting 32 is fixed to the base fitting 31. For example, as the second member 323 approaches the first member 322 as the third member 324 rotates, the second end E2 and the fourth end E4 of the second member 323 come into contact with the support portion 313A. The first end E1 and the third end E3 come into contact with the support portion 313B. By tightening the third member 324, the second end E2 and the fourth end E4 and the inclined plate portion 3222 press the support portion 313A from both sides in the vertical direction. The first end E1 and the third end E3 and the inclined plate portion 3223 press the support portion 313B from both sides in the vertical direction. Thereby, the suspension fitting 32 is fixed to the base fitting 31. The suspension fitting 33 is fixed to the base fitting 31.

[0095] The above-described method of assembling the suspension fixture 3A corresponds to the manufacturing method of the suspension fixture 3A.

[0096] [Modification Example] The protruding portion may be included in the first member. In that case, the protruding portion protrudes toward the second member.

[0097] The number of the protruding portions may be one.

[0098] The elastic member may be a leaf spring. In that case, the shaft member does not penetrate 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 the suspension fixture of the modification example. As shown in FIG. 8, in the suspension fixture 3A in the suspension structure 1, each of the protruding portions 329 and 328 may further contact each of the support portions 313A and 313B. Specifically, the protruding portion 329 contacts the support portion 313A of the base fitting 31. The protruding portion 328 contacts the support portion 313B of the base fitting 31.

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

[0102] It should be understood that all embodiments of the present disclosure are illustrative in all respects and not restrictive in any way. The scope of the present invention is defined by the claims, and it is intended that all modifications within the meaning and scope equivalent to the claims be included.

Explanation of Reference Numerals

[0103] 1 Suspension structure, 2A, 2B Beams, 3A, 3B Suspension fixtures, 311 Base portion, 312, 312A, 312B Side wall portions, 313A, 313B Support portions, 314 Opening, 321 Shaft member, 322 First member, 323 Second member, 324 Third member, 325 Elastic member, 326, 327 Clamping members, 328, 329 Protrusions, 3221 Flat plate portion, 3222, 3223 Inclined plate portions, 3225 First through hole, 3231 Base portion, 3232 Bottom plate, 3233, 3234 Side plates, 3235 Second through hole, 3236 Second wall surface, 3241 Third through hole, 31 Base fitting, 32, 33 Suspension fittings, 4 Suspended member, 61, 71 Nuts, 62, 72 Washers, 63, 73 Vibration isolators, 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 peripheral surface, S1 First wall surface, S3 Third wall surface, T First thread crest, WD Width direction, WD1 First width direction, WD2 Second width direction

Claims

1. A suspension fitting, and a base fitting to which the suspension fitting is fixed, comprising: The suspension fitting includes: a shaft member having a rod-like shape with a first thread formed on an outer peripheral surface thereof; a first member having a first through-hole and having a first thread groove corresponding to the first thread formed on a first wall surface which is a wall surface defining the first through-hole, and being attached to the shaft member such that the first thread and the first thread groove are screwed together; a second member having a second through-hole and being arranged such that the shaft member passes through the second through-hole; a third member having a third through-hole and having a third thread groove corresponding to the first thread formed on a third wall surface which is a wall surface defining the third through-hole, and being attached to the shaft member such that the first thread and the third thread groove are screwed together and such that the third member is located on the side opposite to the first member when viewed from the second member in the longitudinal direction of the shaft member; an elastic member disposed between the first member and the second member and generating an elastic force in a direction to increase the distance between the first member and the second member by contacting the first member and the second member; at least one of the first member and the second member includes a protruding portion protruding toward the other member along the longitudinal direction of the shaft member; The base fitting includes: a base portion having a band-like shape; a first side wall portion and a second side wall portion rising from both ends in the width direction of the base portion so as to face each other; a first support portion and a second support portion connected to the side opposite to the side connected to the base portion of the first side wall portion and the second side wall portion, rising so as to approach each other, and forming an opening therebetween; The second member includes a second base portion, The second base portion includes: a bottom plate on which the second through-hole is formed and extending along a direction orthogonal to the longitudinal direction of the shaft member; a first side plate and a second side plate rising from both ends in the width direction of the bottom plate and extending in a first direction along a direction orthogonal to both the longitudinal direction of the shaft member and the width direction of the bottom plate; The first side plate includes a first inclined end face and a second inclined end face disposed at a first end and a second end respectively separated from each other in the first direction and inclined with respect to a direction orthogonal to the longitudinal direction of the shaft member; The second side plates are respectively disposed at a third end and a fourth end that are separated from each other in the first direction, and include a third inclined end face and a fourth inclined end face that are inclined with respect to a direction orthogonal to the longitudinal direction of the shaft member. The first support portion is connected to the first side wall portion and is inclined such that the distance from the base portion becomes shorter as the distance from the first side wall portion increases. The second support portion is connected to the second side wall portion and is inclined such that the distance from the base portion becomes shorter as the distance from the second side wall portion increases. The suspension fitting is A part of the shaft member enters a region sandwiched between the first side wall portion and the second side wall portion from the opening, and the third member is tightened while sandwiching the first support portion and the second support portion between the first member and the second member, thereby being fixed to the base fitting. When the third member is tightened, each of the first inclined end face and the third inclined end face contacts the first support portion, and each of the second inclined end face and the fourth inclined end face contacts the second support portion. Suspension fixture.

2. When the third member is rotated so that the third member approaches the first member in a state where the third member and the second member are in contact with each other, the protrusion contacts at least one of the other member, the first support portion, and the second support portion, thereby restricting relative rotation of the second member with respect to the first member. The suspension fixture according to claim 1.

3. The elastic member is a coil spring disposed so as to surround the outer peripheral surface of the shaft member in a spiral shape. The suspension fixture according to claim 1 or claim 2.

4. Two beams arranged at intervals, At least one suspension fixture according to claim 1 or claim 2 that bridges the two beams, A suspended member suspended by the suspension fixture, A suspension structure comprising.

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