Piping support member

Abstract

To provide a piping support member excellent in working efficiency.SOLUTION: A piping support member (1) comprises: a restraint member (10) for being fixed to a base fitting (70) in a piping holding state by surrounding an outer peripheral surface of piping by fastening a first bolt (B1) and a first nut (N1) for being screwed to the first bolt; and a nut holding member (50) for being directly or indirectly and detachably attached to the restraint member (10) so that the first nut (N1) can be arranged in a position to be attached, in the state of holding the first nut (N1).SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a pipe support member. [Background technology]

[0002] In air conditioners installed in buildings such as buildings, refrigerant piping may be arranged from an outdoor unit installed outdoors to an indoor unit installed indoors. In this case, for example, during heating operation, the refrigerant piping may expand in the axial direction due to thermal expansion, and the load of this expansion may be applied to a bent part (so-called elbow part) on the end side of the refrigerant piping. In particular, when the refrigerant piping is arranged in the vertical direction, the load due to the weight of the refrigerant piping may also be applied, and a large load may be applied to the bent part. In response to such concerns, a pipe support member connected to a base metal fitting fixed to a structure is used to fix a part of the refrigerant piping in the axial direction, and the axial movement at the fixed part is prevented. The amount of expansion of the piping member due to thermal expansion is distributed to both sides in the axial direction with the fixed part as the center, thereby reducing the load on the bent part on the lowest end side.

[0003] One example of a pipe support member is disclosed in JP 2018-25290 A (Patent Document 1). This pipe support member includes a pair of clamp members 71 having slit-shaped engagement holes 73, and supports the pipe member P by engaging the engagement holes 73 with the flange portion 31 of the mounting member 1 fixed to the outer circumferential surface of the pipe member P. The mounting member 1 is fixed to the pipe member P by a welding method such as brazing.

[0004] However, welding such as brazing requires a certain level of skill, and the quality of the work may vary depending on the skill of the worker. In addition, a building generally has multiple piping members P installed, and the number of fixing points of the mounting members 1 to the piping members P increases throughout the entire building to be constructed. Performing all of these by welding requires a great deal of effort, resulting in poor work efficiency. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2018-25290 A Summary of the Invention [Problem to be solved by the invention]

[0006] It is desirable to realize a pipe support member that has excellent work efficiency. [Means for solving the problem]

[0007] The pipe support member according to the present invention comprises: A pipe support member that is connected to a base metal fitting fixed to a structure and supports a pipe, A restraining member that is fixed to the base metal fitting in a state in which the restraining member surrounds an outer peripheral surface of the piping and holds the piping by fastening a first bolt and a first nut that is screwed onto the first bolt, A nut holding member that is directly or indirectly detachably attached to the restraining member so that the first nut is disposed at a mounting position in a state where the first nut is held; Equipped with.

[0008] According to this configuration, when the first bolt and the first nut are fastened to fix the restraining member to the base metal fitting, the restraining member surrounds the outer circumferential surface of the pipe and directly holds the pipe. For example, there is no need to weld a member having a flange to the pipe, and the work can be performed only by operating the bolts, which improves work efficiency. In addition, a nut holding member is provided detachably in addition to the restraining member, and the first nut is held in its attached position by this nut holding member, so that the worker does not need to hold the first nut by hand when fastening the first bolt and the first nut. In other words, the worker can perform the fastening work by operating only the first bolt, which also improves work efficiency.

[0009] Preferred embodiments of the present invention will be described below. However, the scope of the present invention is not limited to the preferred embodiments described below.

[0010] In one embodiment, The nut holding member has a first holding insertion hole for holding the first nut in an inserted state, It is preferable that the first retaining insertion hole has a shape capable of preventing the first nut from rotating.

[0011] According to this configuration, the first retaining insertion hole has a shape that can prevent the first nut from rotating, so that when, for example, the first bolt and the first nut are tightened manually with light force, the first nut can be prevented from spinning freely, and the tightening operation can be performed efficiently.

[0012] In one embodiment, The first retaining insertion hole is preferably formed by cutting out a part in a circumferential direction.

[0013] According to this configuration, when the first bolt and the first nut are tightened with a large force using a tool, for example, the first nut is allowed to rotate, making it possible to firmly fix the restraining member to the base fitting.

[0014] In one embodiment, The restraint member includes a retaining portion that surrounds the outer peripheral surface to retain the piping, a base fixing portion that extends from the retaining portion so as to face each other and is fixed to the base metal fitting by fastening the first bolt and the first nut, and a tightening action portion that extends from the retaining portion so as to face each other and applies a tightening force to the retaining portion by fastening a second bolt different from the first bolt and a second nut that is screwed onto the second bolt, It is preferable that the nut holding member is directly or indirectly removably attached to the base fixing portion or the fastening action portion so that the first nut and the second nut are positioned in their respective mounting positions while holding the second nut in addition to the first nut.

[0015] According to this configuration, since the fastening action part is provided in addition to the base fixing part fixed to the base metal fitting, in addition to the normal holding of the piping by the holding part when the first bolt is fastened, an additional fastening force can be applied to the holding part by fastening the second bolt. This increases the surface pressure on the inner surface of the holding part, and the piping can be properly supported. In this case, since the first nut and the second nut are held in their respective mounting positions by the nut holding member, the worker does not need to hold the first nut and the second nut by hand when fastening the first bolt and the first nut, and the second bolt and the second nut. In other words, the worker can perform the fastening work by operating only the first bolt and the second bolt, and the work efficiency can be improved.

[0016] In one embodiment, The nut holding member has a second holding insertion hole for holding the second nut in an inserted state, The second retaining insertion hole preferably has a shape capable of preventing the second nut from rotating.

[0017] According to this configuration, the second retaining insertion hole has a shape that can prevent the second nut from rotating, so that when, for example, the second bolt and the second nut are tightened manually with light force, the second nut can be prevented from spinning freely, and the tightening operation can be performed efficiently.

[0018] In one embodiment, The second retaining insertion hole is preferably formed by cutting out a part in the circumferential direction.

[0019] According to this configuration, for example, when the second bolt and the second nut are tightened with a large force using a tool, the second nut is allowed to rotate and a large tightening force is applied to the retaining portion, thereby increasing the surface pressure on the inner surface of the retaining portion and properly supporting the piping.

[0020] In one embodiment, It is preferable that the nut retaining member has a retaining main body portion in which the second retaining insertion hole is formed, and a retaining engagement portion provided on the retaining main body portion and engaging with the base fixing portion or the tightening action portion from the opposite side to the retaining main body portion.

[0021] According to this configuration, the holding engaging portion engages with the base fixing portion or the fastening action portion from the opposite side to the holding body portion, so that the bending deformation of the holding body portion can be suppressed even when the first bolt and the second bolt are fastened. Therefore, the first nut and the second nut held by the holding body portion can be prevented from tilting, so that the fastening operation of the first bolt and the second bolt can be performed smoothly, and from this point of view, the work efficiency can be improved.

[0022] In one embodiment, the holding portion, the base fixing portion, and the fastening portion are integrally formed, and a notch is provided between the base fixing portion and the fastening portion to prevent a fastening force caused by fastening the second bolt from being transmitted to the base fixing portion, It is preferable that the nut holding member is attached directly or indirectly to the base fixing portion at the position of the notch.

[0023] According to this configuration, the restraining member can be easily formed, for example, by punching out from a single metal plate and bending it. In addition, the notch provided between the base fixing part and the fastening action part allows the fastening force by fastening the second bolt to be appropriately directed toward the holding part. Therefore, the piping can be firmly supported. In addition, the first nut and the second nut can be stably held in a position close to the center of gravity by utilizing the notch located between the base fixing part, which is the mounting position of the first nut, and the fastening action part, which is the mounting position of the second nut.

[0024] In one embodiment, a fixing auxiliary member for temporarily fixing the restraint member to the base metal fitting before fastening by the first bolt, It is preferable that the nut holding member is attached to the restraining member via the auxiliary fixing member.

[0025] According to this configuration, the worker can temporarily fasten the restraining member to the base metal fitting with the auxiliary fixing member, and can fasten the first bolt with both hands free while holding the first nut in its mounting position with the nut holding member. This can further improve work efficiency. In this case, by adopting a structure in which the nut holding member and the restraining member are indirectly attached via the auxiliary fixing member, various mounting structures for the nut holding member can be freely adopted while keeping the configuration of the restraining member unchanged.

[0026] Further features and advantages of the present invention will become more apparent from the following description of exemplary and non-limiting embodiments, which are given with reference to the drawings. [Brief description of the drawings]

[0027] [Figure 1] FIG. 1 is a perspective view of a pipe fixing structure using a pipe support member; [Diagram 2] FIG. 1 is a perspective view of a pipe fixing structure using a pipe support member; [Diagram 3] FIG. 3 is an exploded perspective view of a pipe support member; [Figure 4] FIG. 2 is a perspective view of a fixing auxiliary member and a nut holding member; [Diagram 5] FIG. 3 is a perspective view of a nut holding member [Figure 6] FIG. 2 is an exploded perspective view of a fixing auxiliary member and a nut holding member; [Figure 7] Cross-sectional view taken along the line VII-VII in FIG. [Figure 8] FIG. 13 is a perspective view showing a method of using the pipe support member; [Figure 9] Front view of piping fixing structure [Figure 10] Plan view of piping fixing structure [Figure 11] Side view of piping fixing structure DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0028] An embodiment of a pipe support member will be described with reference to the drawings. As shown in Fig. 1 and Fig. 2, the pipe support member 1 of this embodiment is connected to a base metal fitting 70 fixed to a structure S to support a pipe P. Fig. 2 is a perspective view seen from the opposite side to Fig. 1.

[0029] In the following description, the terms "axial direction," "circumferential direction," and "radial direction" may be used to describe the shape and positional relationship of each component, but these are defined based on the pipe P that is the object supported by the pipe support member 1. In other words, "axial direction" refers to the axial direction (longitudinal direction) of the pipe P, "circumferential direction" refers to the direction going around the periphery of the pipe P, and "radial direction" refers to the direction extending radially from the axis of the pipe P. Unless otherwise specified, references to these directions in the description of each part of the pipe support member 1 are intended to refer to the directions when the pipe P is actually held.

[0030] The pipe support member 1 of the present embodiment is used for pipes P arranged from an outdoor unit of an air conditioner installed on the roof of a structure such as a building to a plurality of indoor units installed indoors. An example of the pipes P is a copper refrigerant pipe.

[0031] 1 and 2 show an example of a pipe fixing structure using a pipe support member 1 of this embodiment, in which a predetermined location of a pipe P arranged in a vertical direction (up and down direction) is fixed to a structure S. This pipe fixing structure is used to prevent the pipe P from moving axially relative to the structure S at the fixed location. The structure S is, for example, the skeleton or exterior wall of a building.

[0032] A base metal fitting 70 is fixed to the structure S. The base metal fitting 70 may be fixed directly to the structure S, or may be fixed indirectly via another member (for example, an intervening member such as a bracket). The base metal fitting 70 is made of metal, for example, hot-rolled mild steel plate. As shown in Figs. 1 and 3, the base metal fitting 70 is formed in a curved plate shape. The base metal fitting 70 includes an attachment base 71 that can be abutted against the structure S (or an intervening member) in a surface-contact state, and a connecting portion 72 that extends and intersects (orthogonally in this example) with the attachment base 71. The attachment base 71 and the connecting portion 72 are formed with insertion holes 71a, 72a through which the bolt B is inserted, respectively.

[0033] The pipe support member 1 is connected to a base metal fitting 70 to support the pipe P. The pipe support member 1 supports the pipe P arranged along the up-down direction at one location in the axial direction (up-down direction). As shown in Figs. 1 to 3, the pipe support member 1 of this embodiment includes a restraining member 10, a fixing auxiliary member 30, and a nut holding member 50. In this embodiment, the pipe support member 1 includes one restraining member 10, two fixing auxiliary members 30, and one nut holding member 50. The fixing auxiliary member 30 is detachably attached to the restraining member 10. The nut holding member 50 is detachably attached to the fixing auxiliary member 30, and is detachably attached to the restraining member 10 via the fixing auxiliary member 30.

[0034] The restraining member 10 is fixed to the base metal fitting 70 in a state in which it surrounds the outer peripheral surface of the pipe P and holds the pipe P. The restraining member 10 includes a holding portion 11, a base fixing portion 13, and a fastening action portion 16, which are integrally formed. The restraining member 10 is made of metal, and is configured using, for example, a hot-rolled mild steel plate or the like.

[0035] The holding portion 11 is a portion for holding the pipe P. The holding portion 11 is formed in a substantially cylindrical shape that is not completely closed. The inner diameter of the holding portion 11 is set to be equal or substantially equal to the outer diameter of the pipe P. As shown in FIG. 8, before use, the holding portion 11 does not have a shape along a perfect circle when viewed in the axial direction, but is expanded to a certain extent (open posture). From this expanded opening, the holding portion 11 can be attached to the pipe P from the outside in the radial direction. Thereafter, an external force is applied to close the expanded holding portion 11 to deform it to a closed posture, and further, as described later, a first bolt B1 and a first nut N1, and a second bolt B2 and a second nut N2 are fastened, so that the holding portion 11 surrounds the outer peripheral surface of the pipe P to hold the pipe P.

[0036] As shown in Figs. 1 to 3, a through hole 11a is formed in the holding portion 11. The through hole 11a is formed in a portion of the holding portion 11 opposite to the base fixing portion 13 and the fastening action portion 16. In this embodiment, a plurality of through holes 11a are formed along the axial direction (lined up and down). The through holes 11a function as bending strength adjustment portions 12 for adjusting the magnitude of bending strength of the restraining member 10 (specifically, the holding portion 11 constituting the restraining member 10).

[0037] The base fixing part 13 is a part fixed to the base metal fitting 70. The base fixing part 13 is composed of a pair of plate parts extending from the holding part 11 so as to face each other. In this embodiment, a pair of plate parts constituting the base fixing part 13 extend in the radial direction from both circumferential ends of the approximately cylindrical holding part 11 that is not completely closed. The base fixing part 13 is formed in an elongated rectangular shape. The base fixing part 13 has an insertion hole 13a through which a bolt B (specifically, a first bolt B1) is inserted. The base fixing part 13 is fixed to the base metal fitting 70 by fastening the first bolt B1. The shaft part of the first bolt B1 is inserted into the two insertion holes 13a of the base fixing part 13 and the insertion hole 72a of the base metal fitting 70, and is screwed and fastened to a nut N (specifically, a first nut N1) on the opposite side, thereby fixing the base fixing part 13 to the base metal fitting 70.

[0038] Furthermore, locking recesses 14 recessed toward the center line of the base fixing part 13 are formed on the upper and lower side edges 13b of the pair of plate parts constituting the base fixing part 13. Locking claw parts 35 of the fixing auxiliary member 30 are locked in the locking recesses 14.

[0039] The fastening portion 16 is a portion for applying a fastening force to the holding portion 11. The fastening portion 16 is composed of a pair of plate portions extending from the holding portion 11 so as to face each other. In this embodiment, a pair of plate portions constituting the fastening portion 16 extend radially from both circumferential ends of the substantially cylindrical holding portion 11, which is not completely closed. The extension length of the fastening portion 16 from the holding portion 11 is shorter than the extension length of the base fixing portion 13. In this embodiment, the two fastening portions 16 are provided separately above and below, sandwiching the base fixing portion 13 therebetween.

[0040] The fastening portion 16 has a fastening body 17 and a tip bent portion 18. The fastening body 17 is a main part of the fastening portion 16. In this embodiment, the fastening body 17 is formed in a substantially trapezoid shape. In this embodiment, the two fastening bodies 17 (tightening body 17 located on the front side in FIG. 8) extending from one circumferential end of the holding portion 11 are both formed in an inverted trapezoid shape with the upper side longer than the lower base. On the other hand, the two fastening bodies 17 (tightening body 17 located on the back side in FIG. 8) extending from the other circumferential end of the holding portion 11 are both formed in a regular trapezoid shape with the lower side longer than the upper base. As a result, the regular trapezoid fastening body 17 and the inverted trapezoid fastening body 17 are arranged opposite each other on the upper and lower sides.

[0041] A protruding portion 17B protruding outward is formed in the center of the fastening body 17. The protruding portion 17B is formed in a circular shape. The protruding portion 17B functions as a circular rib and improves the strength of the fastening body 17. An insertion hole 17a through which a bolt B (specifically, a second bolt B2 different from the first bolt B1) is inserted is formed in the center of this protruding portion 17B. The fastening body 17 including the protruding portion 17B is a portion of the fastening action portion 16 where the second bolt B2 is fastened. In this embodiment, the second bolt B2 is fastened at a position closer to the retaining portion 11 than the first bolt B1.

[0042] The shaft of the second bolt B2 is inserted into the insertion hole 17a of the fastening body 17, and the opposite side is screwed into a nut N (specifically, the second nut N2) to fasten the bolt, thereby applying a fastening force to the retaining portion 11. This increases the surface pressure of the inner surface of the retaining portion 11, and the pipe P can be properly supported. For example, welding such as brazing is not required, and the work can be performed only by tightening the bolts B (the first bolt B1 and the second bolt B2), so that the work efficiency is good. The bolt operation can also be performed with an electric drill, in which case the work efficiency can be significantly improved. Moreover, since the pipe P is held by the surface pressure of the retaining portion 11, the pipe P does not oxidize or deform (for example, a dent occurs due to biting), and the pipe P is highly reliable.

[0043] The tip bent portion 18 is a portion obtained by bending the tip of the fastening main body portion 17 on the opposite side to the holding portion 11. The tip bent portion 18 is bent at a substantially right angle to the fastening main body portion 17. The tip bent portions 18 are bent from the opposing fastening main bodies 17 so as to face each other. As shown in Figs. 2 and 8, the two opposing tip bent portions 18 abut against each other in a crossing state. In this embodiment, the tip bent portion 18 has a substantially rectangular cutout recess 18a in its vertical central region. The tip bent portions 18 of a pair of opposing fastening action portions 16 abut against each other in a crossing state with the respective cutout recesses 18a facing each other.

[0044] In this way, the tip bent portions 18 are provided on the opposite side of the holding portion 11 with respect to the fastening position (i.e., the position of the insertion hole 17a) of the fastening body portion 17 by the second bolt B2, and abut against each other when fastening by the second bolt B2. This abutment causes the tip bent portions 18 to maintain a constant distance between the fastening body portions 17 when fastening by the second bolt B2. As a result, when the second bolt B2 is fastened, the contact points between the tip bent portions 18 serve as fulcrums, and the fastening body portions 17 facing each other at a constant distance can be more firmly clamped together, and accordingly, a larger fastening force can be applied to the holding portion 11. In this way, the surface pressure by the inner surface of the holding portion 11 can be further increased, and the pipe P can be firmly supported.

[0045] Moreover, because the pair of tip bent portions 18 are in contact with each other while intersecting, the fastening force produced by fastening the second bolts B2 can be evenly applied to the pair of fastening action portions 16. This, combined with the fact that the strength of the fastening main body portion 17 itself is increased by forming the circular protrusions 17B, allows the fastening action portions 16 to stably support the piping P with almost no deformation or bias.

[0046] In this embodiment, the tip bent portions 18 function as proximity restriction portions 19 that abut against each other when fastening with the second bolt B2, thereby maintaining a constant distance between the fastening main body portions 17.

[0047] In this embodiment, a notch 21 is provided between the base fixing portion 13 and the two fastening action portions 16. The notch 21 is formed so as to extend radially from the upper and lower side edges 13b of the base fixing portion 13. By providing such a notch 21, the base fixing portion 13 and the two fastening action portions 16 can be separated, and the fastening force of the fastening action portion 16 exerted by fastening the second bolt B2 can be made less likely to be transmitted to the base fixing portion 13 side. In other words, the fastening force of the fastening action portion 16 exerted by fastening the second bolt B2 can be appropriately directed toward the holding portion 11 side. Therefore, the pipe P can be supported more firmly.

[0048] As shown in Figures 3, 4, and 8, the pipe support member 1 of this embodiment includes an auxiliary fixing member 30 that is detachable from the restraining member 10. The auxiliary fixing member 30 includes a main body portion 31, an attached portion 32, a side wall portion 33, a pressing piece 34, a locking claw portion 35, a first extending portion 36, an engaged portion 37, a second extending portion 38, and an engaging claw portion 39. These are integrally formed. The auxiliary fixing member 30 is made of resin, such as polypropylene or polyacetal.

[0049] The main body 31 is formed in a flat plate shape that fits along the base fixing portion 13 of the restraining member 10. The main body 31 is formed in a rectangular shape. An insertion hole 31a through which a bolt B (specifically, a first bolt B1) is inserted is formed in the main body 31. The main body 31 is disposed along the inner surface of each of the pair of plates that constitute the base fixing portion 13 in a state in which the fixing auxiliary member 30 is attached to the restraining member 10 (hereinafter simply referred to as the "attached state").

[0050] The sidewall portion 33 is formed to rise vertically from the rectangular main body portion 31 along three sides of the main body portion 31. The sidewall portion 33 has a first portion 33A and a second portion 33B and a third portion 33C extending from both ends of the first portion 33A. In the attached state, the first portion 33A abuts against an edge 13c of the base fixing portion 13 opposite the holding portion 11. In the attached state, the second portion 33B and the third portion 33C abut against upper and lower side edges 13b of the base fixing portion 13.

[0051] The pressing piece 34 is formed at the boundary between the first portion 33A and the second portion 33B of the side wall portion 33 and at the boundary between the first portion 33A and the third portion 33C. The pressing piece 34 is formed in an L-shape at a position spaced apart from the main body portion 31 by the plate thickness of the base fixing portion 13 of the restraining member 10. In the attached state, the pressing piece 34 abuts against the outer surfaces of the pair of plates that constitute the base fixing portion 13. As a result, in the attached state, the main body portion 31 and the pressing piece 34 cooperate to press the pair of plates that constitute the base fixing portion 13 from both the inside and outside.

[0052] The locking claw portion 35 is formed so as to extend continuously from the second portion 33B and the third portion 33C of the side wall portion 33. In the attached state, the locking claw portion 35 is locked to the locking recesses 14 formed in the upper and lower side edges 13b of the pair of plate portions constituting the base fixing portion 13 (see FIG. 8). This makes it possible to prevent the auxiliary fixing member 30 attached to the restraining member 10 from coming off. In this embodiment, the locking recesses 14 of the base fixing portion 13 and the locking claw portion 35 of the auxiliary fixing member 30 cooperate to function as a stopper portion 41 that prevents the auxiliary fixing member 30 attached to the restraining member 10 from coming off.

[0053] The mounting portion 32 is formed on a side portion of the main body 31 where the side wall portion 33 is not provided (in other words, the side opposite the side portion where the first portion 33A is provided). A pair of mounting portions 32 are formed so as to protrude upward and downward from both upper and lower ends of the side portion of the main body 31 opposite the first portion 33A. The mounting portion 32 is provided adjacent to the locking claw portion 35. The mounting portion 32 is disposed in the cutout portion 21 in a state where the fixing auxiliary member 30 is attached to the restraining member 10. As shown in FIGS. 6 and 7, a holding mounting portion 54 provided on the nut holding member 50 is attached to the mounting portion 32.

[0054] The first extending portion 36 extends outward from the second portion 33B of the side wall portion 33. The second extending portion 38 extends outward from the third portion 33C of the side wall portion 33. The first extending portion 36 and the second extending portion 38 extend in opposite directions. The engaged portion 37 is provided at the tip of the first extending portion 36 in a state intersecting (orthogonal in this example) the first extending portion 36. The engaging claw portion 39 is provided at the tip of the second extending portion 38 in a state intersecting (orthogonal in this example) the second extending portion 38. The engaged portion 37 and the engaging claw portion 39 extend in opposite directions.

[0055] In this embodiment, the fixing auxiliary members 30 having the same shape are respectively attached to a pair of plates constituting the base fixing portion 13. When the restraining member 10 is in the closed position, as shown in Figs. 8 to 10, the engaging claw portion 39 of one of the fixing auxiliary members 30 engages with the engaged portion 37 of the other fixing auxiliary member 30, and the engaging claw portion 39 of the other fixing auxiliary member 30 engages with the engaged portion 37 of one of the fixing auxiliary members 30. As a result, even if the operator releases the fixing auxiliary members 30, the restraining member 10 is kept in the closed position. In this embodiment, the engaged portion 37 and the engaging claw portion 39 provided separately on the two fixing auxiliary members 30 cooperate to function as a closed position holding portion 42 that holds the restraining member 10 in the closed position.

[0056] In this way, the fixing auxiliary member 30 is first used to temporarily fasten the base fixing part 13 to the base metal fitting 70 before fastening with the first bolt B1. This allows the worker to perform the fastening operation with the first bolt B1 with both hands free, resulting in excellent workability.

[0057] Furthermore, the fixing auxiliary member 30 will remain attached even after the first bolt B1 is fastened, and the main body 31 of the fixing auxiliary member 30 will be interposed between the connecting portion 72 of the base metal fitting 70 and the pair of plates constituting the base fixing portion 13 on both sides thereof. Secondly, the fixing auxiliary member 30 is used as a spacer to prevent direct contact between the base metal fitting 70 and the base fixing portion 13. By ensuring the separation width between the pair of plates constituting the base fixing portion 13, the separation width between the pair of fastening main body portions 17 of the fastening action portion 16 is ensured, and the fastening allowance of the fastening action portion 16 due to the fastening of the second bolt B2 is ensured.

[0058] Furthermore, in this embodiment, since the fixing auxiliary member 30 interposed between the base metal fitting 70 and the base fixing portion 13 is made of resin with low thermal conductivity, heat transfer from the base fixing portion 13 to the base metal fitting 70 is significantly suppressed. Thirdly, the fixing auxiliary member 30 is used as a heat insulating material that suppresses heat transfer from the base fixing portion 13 to the base metal fitting 70. When the piping P is a refrigerant piping as in this embodiment, the heat (for example, cold heat) of the refrigerant flowing through the piping P may be transferred to the metal restraining member 10 via the piping P. Even in this case, the fixing auxiliary member 30 functions as a heat insulating material and can suppress the cold heat from being transferred to the base metal fitting 70. As a result, condensation on the surface of the base metal fitting 70 can be suppressed.

[0059] As shown in FIG. 2 and FIG. 3, the nut holding member 50 is detachably attached to the restraining member 10 in a state where the first nut N1 and the second nut N2 are held, so that the first nut N1 and the second nut N2 are disposed at their respective attached positions. In this embodiment, the nut holding member 50 holds one first nut N1 and two second nuts N2. The attached position of the first nut N1 is a position overlapping with the insertion hole 13a of the base fixing part 13, and the attached positions of the second nut N2 are positions overlapping with the insertion holes 17a of the upper and lower two fastening action parts 16 (specifically, the fastening main body part 17). In this embodiment, the nut holding member 50 is detachably attached to the fixing auxiliary member 30 attached to the restraining member 10. That is, the nut holding member 50 is indirectly attached to the restraining member 10 via the fixing auxiliary member 30.

[0060] 2 to 5, the nut holding member 50 has a holding body portion 51, a holding attachment portion 54, and a holding engagement portion 56. These are integrally formed. The nut holding member 50 is made of resin, for example, polypropylene, polyacetal, or the like.

[0061] The holding body 51 is a portion that mainly holds the first nut N1 and the second nut N2. The holding body 51 has a central plate 51A and a pair of extending plate portions 51B extending from the central plate 51A to both the top and bottom. These are integrally formed. In this embodiment, the extending plate portion 51B is formed offset from the central plate portion 51A so as to be spaced apart from the restraining member 10 in a state where it is attached to the restraining member 10. The extending plate portion 51B is formed offset from the central plate portion 51A by an amount equivalent to the raised height of the raised portion 17B formed on the fastening body 17 of the fastening action portion 16.

[0062] A first retaining through-hole 52 is formed through the retaining body 51. One first retaining through-hole 52 is formed in the central plate 51A of the retaining body 51. The retaining body 51 holds the first nut N1 in a state where it is inserted through the first retaining through-hole 52. In this embodiment, a flanged nut is used as the first nut N1, and the retaining body 51 holds the first nut N1 in a state where the nut body of the first nut N1 is inserted through the first retaining through-hole 52 and the flange portion is engaged with the periphery of the first retaining through-hole 52. The first retaining through-hole 52 is formed in a substantially hexagonal shape according to the outer shape of the nut body of the first nut N1. Therefore, the retaining body 51 can hold the first nut N1 in a state where it is prevented from rotating.

[0063] In this embodiment, the first retaining insertion hole 52 is formed by cutting out a part of the circumferential direction with a slit-shaped cutout portion 52a. Due to the presence of this slit-shaped cutout portion 52a, the first retaining insertion hole 52 does not completely prevent the first nut N1 from rotating, and the first nut N1 is allowed to rotate when a large force is applied.

[0064] Further, the holding body portion 51 is formed with a second holding through hole 53. The second holding through hole 53 is formed in each of the pair of extending plate portions 51B of the holding body portion 51. The holding body portion 51 holds the second nut N2 in a state where the second nut N2 is inserted through the second holding through hole 53. In this embodiment, a flanged nut is used as the second nut N2, and the holding body portion 51 holds the second nut N2 in a state where the nut body of the second nut N2 is inserted through the second holding through hole 53 and the flange portion is engaged with the peripheral portion of the second holding through hole 53. The second holding through hole 53 is formed in a substantially hexagonal shape according to the outer shape of the nut body of the second nut N2. Therefore, the holding body portion 51 can hold the second nut N2 in a state where it is prevented from rotating.

[0065] In this embodiment, the second retaining insertion hole 53 is formed by cutting out a part of the second nut N2 in the circumferential direction with a slit-shaped cutout portion 53a. Due to the presence of this slit-shaped cutout portion 53a, the second retaining insertion hole 53 does not completely prevent the second nut N2 from rotating, and the second nut N2 is allowed to rotate when a large force is applied.

[0066] The holding attachment portion 54 stands upright from the holding body portion 51 (specifically, the extending plate portion 51B). The holding attachment portion 54 is provided at a position between the first holding insertion hole 52 and the second holding insertion hole 53. As shown in Figs. 5 to 7, the holding attachment portion 54 is composed of a pair of claw portions, and is attached to the attached portion 32 provided on the auxiliary fixing member 30. The holding attachment portion 54 is attached to the attached portion 32 at the position of the notch 21 provided on the restraining member 10 in a state in which the auxiliary fixing member 30 is attached to the restraining member 10. As a result, the nut holding member 50 is indirectly attached to the base fixing portion 13 at the position of the notch 21 via the auxiliary fixing member 30.

[0067] The holding engagement portion 56 is provided at the tip of the holding body portion 51 (specifically, the extending plate portion 51B). The holding engagement portion 56 is provided across a pair of legs 55 formed at the tip of the holding body portion 51 by bending. The holding engagement portion 56 is composed of a triangular engagement piece that faces downward. As shown in Figs. 1, 2, and 10, the holding engagement portion 56 engages with the fastening action portion 16 from the opposite side to the holding body portion 51 in a state in which the nut holding member 50 is attached to the restraining member 10 via the fixing auxiliary member 30. This stabilizes the mounting posture of the nut holding member 50, and therefore the holding posture of the first nut N1 and the second nut N2.

[0068] In this embodiment, when the fastening force of the fastening action portion 16 against the holding portion 11 is insufficient (before the second bolt B2 and the second nut N2 are firmly fastened together), as shown in Fig. 10, a gap D exists between the holding engagement portion 56 and the fastening main body portion 17 to which the nut holding member 50 is not attached. As the second bolt B2 and the second nut N2 are fastened together, the gap D gradually becomes smaller, and when the fastening force of the fastening action portion 16 becomes sufficient, the gap D disappears. For this reason, the completion of fastening can be easily confirmed visually from the outside, improving the uniformity of the construction.

[0069] In this manner, the pipe support member 1 of this embodiment is detachably attached to the restraint member 10 with the nut holding member 50 holding the first nut N1 and the second nut N2. The nut holding member 50 holds the first nut N1 and the second nut N2 in their respective mounting positions before fastening, so that the worker does not need to hold down the nuts N1 and N2 by hand when fastening the first bolt B1 and the second bolt B2. Moreover, the first nut N1 is prevented from rotating by the first retaining insertion hole 52, and the second nut N2 is prevented from rotating by the second retaining insertion hole 53, so that the worker can perform the fastening work by operating only the first bolt B1 and the second bolt B2, and the work efficiency can be significantly improved.

[0070] Furthermore, since the first retaining insertion hole 52 and the second retaining insertion hole 53 are formed by cutting out a portion in the circumferential direction, when the first bolt B1 and the second bolt B2 are fastened with a large force using a tool, for example, the first nut N1 and the second nut N2 can be allowed to rotate, and they can be firmly fastened. Therefore, the restraining member 10 can be firmly fixed to the base metal fitting 70, and a large tightening force can be applied to the retaining portion 11 to increase the surface pressure by the inner surface of the retaining portion 11, thereby appropriately supporting the piping P.

[0071] Other embodiments (1) In the above embodiment, the nut holding member 50 holds both the first nut N1 and the second nut N2. However, the present invention is not limited to such a configuration, and the nut holding member 50 may hold only the first nut N1. In addition, the present specification also discloses an embodiment in which the nut holding member 50 holds only the second nut N2.

[0072] (2) In the above embodiment, the first retaining through-hole 52 and the second retaining through-hole 53 are formed in a substantially hexagonal shape with a portion cut out in the circumferential direction. However, the present invention is not limited to such a configuration, and at least one of the first retaining through-hole 52 and the second retaining through-hole 53 may be formed in a substantially closed hexagonal shape without a cutout. In addition, the first retaining through-hole 52 and the second retaining through-hole 53 may be formed in other shapes, such as an oval, as long as they can prevent at least the first nut N1 and the second nut N2 from rotating. Alternatively, the first retaining through-hole 52 and the second retaining through-hole 53 may be formed in a perfect circle and may not necessarily have a function of preventing the first nut N1 and the second nut N2 from rotating.

[0073] (3) In the above embodiment, a configuration has been described as an example in which the nut holding member 50 is attached to the base fixing portion 13 via the auxiliary fixing member 30 inside the cutout portion 21. However, the present invention is not limited to such a configuration, and the nut holding member 50 may be attached to the fastening action portion 16 inside the cutout portion 21. Also, the nut holding member 50 may be attached to the base fixing portion 13 via the auxiliary fixing member 30 outside the cutout portion 21.

[0074] (4) In the above embodiment, the nut holding member 50 is described as having the holding engagement portion 56 that engages with the fastening portion 16 from the side opposite to the holding body portion 51. However, the present invention is not limited to such a configuration, and the nut holding member 50 may be attached to the restraining member 10 by only the holding attachment portion 54 without having such a holding engagement portion 56.

[0075] (5) In the above embodiment, a configuration has been described as an example in which the pipe support member 1 includes the auxiliary fixing member 30, and the nut holding member 50 is indirectly attached to the restraining member 10 via the auxiliary fixing member 30. However, the present invention is not limited to such a configuration, and the nut holding member 50 may be directly attached to the restraining member 10 without the pipe support member 1 including the auxiliary fixing member 30 (or even when the pipe support member 1 includes the auxiliary fixing member 30).

[0076] (6) In the above embodiment, a configuration has been described as an example in which the nut holding member 50 is used together with the restraining member 10 that is fixed to the base metal fitting 70 in a state in which the nut holding member 50 surrounds the outer circumferential surface of the pipe P and holds the pipe P in the pipe support member 1. However, the present specification is not limited to such a configuration, and the nut holding member 50 can also be used together with any member that is fixed by fastening a bolt B to a nut N that is screwed onto the bolt B. Such a nut holding member 50 with no limited use is also disclosed by this specification. In this case, the nut holding member 50 is, A nut holding member 50 that is detachably attached to a fixed member that is fixed by fastening a bolt B and a nut N screwed onto the bolt B so that the nut N is disposed at a fixed position while holding the nut N; It has the following configuration.

[0077] (7) The configurations disclosed in the above-mentioned embodiments (including the above-mentioned embodiments and other embodiments; the same applies below) can be applied in combination with configurations disclosed in other embodiments, as long as no contradiction occurs. As for other configurations, the embodiments disclosed in this specification are illustrative in all respects and can be appropriately modified within the scope of the present disclosure. [Explanation of symbols]

[0078] 1 Pipe support member 10 Restraining member 11 Holding part 13 Base fixing part 16 Fastening action part 21 Notch 30 Fixing auxiliary parts 50 Nut retaining member 52 First retaining insertion hole 52a Slit-shaped notch 53 Second retaining insertion hole 53a Slit-shaped notch 56 Holding engagement part 70 Base bracket B1 First bolt B2 Second bolt N1 First nut N2 Second nut P piping S structure

Claims

1. A pipe support member that is connected to a base metal fitting fixed to a structure and supports a pipe, A restraining member that is fixed to the base metal fitting in a state in which the restraining member surrounds an outer peripheral surface of the piping and holds the piping by fastening a first bolt and a first nut that is screwed onto the first bolt, A nut holding member that is directly or indirectly detachably attached to the restraining member so that the first nut is disposed at a mounting position in a state where the first nut is held; Equipped with A pipe support member in which the thickness of the nut holding member is thinner than the thickness of the first nut.

2. The nut holding member has a first holding insertion hole for holding the first nut in an inserted state, The first retaining insertion hole has a shape capable of preventing the first nut from rotating, and is formed by cutting out a portion in a circumferential direction, The piping support member described in claim 1, wherein the first retaining insertion hole prevents the first nut from spinning freely when the first bolt and the first nut are fastened with a first magnitude of force, while allowing the first nut to rotate when the first bolt and the first nut are fastened with a second magnitude of force greater than the first magnitude.

3. The restraint member includes a retaining portion that surrounds the outer peripheral surface to retain the piping, a base fixing portion that extends from the retaining portion so as to face each other and is fixed to the base metal fitting by fastening the first bolt and the first nut, and a tightening action portion that extends from the retaining portion so as to face each other and applies a tightening force to the retaining portion by fastening a second bolt different from the first bolt and a second nut that is screwed onto the second bolt, The piping support member described in claim 1 or 2, wherein the nut retaining member is directly or indirectly removably attached to the base fixing portion or the fastening action portion so that the first nut and the second nut are positioned in their respective mounting positions while holding the first nut as well as the second nut.

4. The nut holding member has a second holding insertion hole for holding the second nut in an inserted state, The second retaining insertion hole has a shape capable of preventing the second nut from rotating, and is formed by cutting out a portion in a circumferential direction, The piping support member described in claim 3, wherein the second retaining insertion hole prevents the second nut from spinning freely when the second bolt and the second nut are fastened with a first magnitude of force, while allowing the second nut to rotate when the second bolt and the second nut are fastened with a second magnitude of force greater than the first magnitude.

5. the holding portion, the base fixing portion, and the fastening portion are integrally formed, and a notch is provided between the base fixing portion and the fastening portion to prevent a fastening force caused by fastening the second bolt from being transmitted to the base fixing portion, The pipe support member according to claim 3 , wherein the nut holding member is attached directly or indirectly to the base fixing portion at the position of the notch.

6. The pipe support member according to claim 3 , wherein the nut holding member has a thickness smaller than a thickness of the second nut.

7. A pipe support member that is connected to a base metal fitting fixed to a structure and supports a pipe, A restraining member that is fixed to the base metal fitting in a state in which the restraining member surrounds an outer peripheral surface of the piping and holds the piping by fastening a first bolt and a first nut that is screwed onto the first bolt, A nut holding member that is directly or indirectly detachably attached to the restraining member so that the first nut is disposed at a mounting position in a state where the first nut is held, The restraint member includes a retaining portion that surrounds the outer peripheral surface to retain the piping, a base fixing portion that extends from the retaining portion so as to face each other and is fixed to the base metal fitting by fastening the first bolt and the first nut, and a tightening action portion that extends from the retaining portion so as to face each other and applies a tightening force to the retaining portion by fastening a second bolt different from the first bolt and a second nut that is screwed onto the second bolt, the nut holding member is directly or indirectly detachably attached to the base fixing portion or the fastening action portion such that the first nut and the second nut are disposed at their respective mounting positions in a state in which the nut holding member holds the second nut in addition to the first nut, A pipe support member in which the thickness of the nut holding member is thinner than the thickness of at least one of the first nut and the second nut.

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