Bolt connector

Abstract

To provide a connection tool for three bolts that has a simple structure and is free from damage due to rocking force.SOLUTION: A pair of bolt holding bodies E1 each that hold an intermediate part of a steadying bolt B2 are respectively rotatably connected to both end parts in an axial direction of a connection tool body D1 that holds an intermediate part of a hanging bolt B1. The hanging bolt B1 and each steady bolt B2 for the connection tool body D1 and each bolt holding body E1 are inserted and arranged into each bolt insertion hole 8 formed through the connection tool body D1 and each bolt holding body E1 by partially receiving the intermediate part of each bolt B1, B2 from each bolt insertion opening 6. Each bolt insertion opening 6 is prevented from being pulled out by a blockage body 21.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to a bolt connector for connecting two anti-vibration bolts in a crossed manner to a single reference bolt.

[0002] First, the basic terms used in this specification are defined below. "Screwing" refers to the state or operation of two screw members being joined by a screw structure; "Screwing" refers to the state or operation of a male screw and a female screw being screwed together; "Screwing rotation" refers to rotating two screwed members relative to each other to bring them closer together or further apart; "Screwing center" refers to the center of rotation when two screwed members are screwed together, and is sometimes called the "axis"; and "Screwing advance" and "Screwing retreat" refer to the relative movement of two screw members towards or away from each other due to the aforementioned screwing rotation. Furthermore, the term "bolt" in "suspension bolt" and "anti-vibration bolt" refers to a long bolt used for suspension from the ceiling or walls of a building, and is sometimes called a "bolt shaft" in this industry. [Background technology]

[0003] One type of bolt connector that connects a total of three bolts in a cross shape is known, as disclosed in Patent Document 1. As shown in the "perspective view," "AA cross-sectional view," and "BB cross-sectional view" of the drawings, this bolt connector has an inner member in which a bolt can be inserted is connected integrally to both sides of an inner member, which has an irregular shape with a vertical cross-section that is a split arc shape and a bolt insertion opening formed close to the opening of the inner member, and disc-shaped outer plates are arranged on both sides of the inner member, and the inner member and the pair of outer plates are assembled integrally via two connecting bolts and connecting nuts. On the outer surface of the pair of outer plates, when integrally assembled with the inner member, a pair of semi-cylindrical parts having an intersection angle corresponding to the intersection angle of the pair of anti-vibration bolts are provided integrally, spaced in a "twisted position" that does not intersect with each other and is not parallel.

[0004] Therefore, in order to connect two anti-vibration bolts in a crossing manner to a single reference bolt suspended from the ceiling surface using the bolt connector of Patent Document 1, the inner member and the pair of outer plates constituting the bolt connector are separated from each other, the reference bolt is inserted through the cylindrical body of the inner member, and the anti-vibration bolts are inserted through the semi-cylindrical portions integrally provided on the outer surface of each outer plate, and then the inner member and the pair of outer plates are assembled together via two connecting bolts and connecting nuts, so that the two anti-vibration bolts are connected in a crossing manner to the single reference bolt.

[0005] Thus, in order to connect the three bolts described above in a cross shape to the bolt connector of Patent Document 1, it was necessary to separate the inner member and the pair of outer plates that constitute the bolt connector, and then, with the bolts held by the inner member and the pair of outer plates respectively, to assemble the inner member and the pair of outer plates together using two connecting bolts and connecting nuts. This was an extremely time-consuming and troublesome process.

[0006] Furthermore, the intersection angle between the reference bolt and the anti-vibration bolts on either side thereof can be adjusted within the range of the central angle of the arc-shaped insertion hole, which is formed in the disc-shaped outer plate body for inserting the connecting bolts, and is formed in an arc shape with the center of the outer plate body as the center.

[0007] As a result, if any of the three bolts vibrated, the entire oscillating force of the bolt connector would act on the anti-vibration bolts supporting each outer panel, causing them to rotate around one of the two connecting bolts that connect the outer panel to the inner member. This resulted in poor load balance and a tendency for the bolts to break easily. [Prior art documents] [Patent Documents]

[0008] [Patent Document 1] Design Registration No. 1144494 Gazette [Overview of the project] [Problems that the invention aims to solve]

[0009] The present invention aims to provide a three-bolt connector that is simple in structure and resistant to damage from oscillating forces. [Means for solving the problem]

[0010] The invention of claim 1, which solves the above problem, A bolt connector for connecting two anti-vibration bolts in a crossed manner to one reference bolt, The connector body comprises a holding portion for holding the intermediate portion of the reference bolt, and a pair of bolt holders each having a holding portion for holding the intermediate portion of the two anti-sway bolts. The connecting body has a pair of connecting parts provided on both sides of the holding part, flanking the reference bolt which is held in the holding part, and the holding part has an opening that can partially receive and house the intermediate portion of the reference bolt, and a closing part that closes the opening to prevent the reference bolt from coming out. The pair of bolt holders are connected to the respective connecting parts in such a manner that they can each rotate independently relative to the connecting body, and each holding part of the pair of bolt holders has an opening that can partially receive and house the intermediate portion of the anti-vibration bolt, and a closing part that closes the opening to prevent the anti-vibration bolt from coming out. The openings of the pair of bolt holders are characterized in that they are open in opposite directions along the direction connecting the respective connecting parts of the connector body.

[0011] The bolt connector of claim 1 is configured such that a pair of bolt holders for holding the anti-vibration bolt are rotatably connected to connecting parts provided on both sides of the holding part of the connector body for holding the reference bolt (suspension bolt), so that the connector body and the pair of bolt holders are arranged linearly with the connector body sandwiched between the pair of bolt holders. To connect a total of three bolts, the reference bolt and two anti-vibration bolts, in a cross-shaped configuration using this bolt connector, the intermediate portion of the reference bolt, which is vertically positioned inside the opening of the central connector body, is accommodated and positioned inside, and the opening is then closed with a closing body. Subsequently, one of the bolt holders is rotated relative to the connector body by the angle of inclination of the anti-vibration bolt relative to the reference bolt, accommodating and positioning the intermediate portion of the anti-vibration bolt inside through its opening, and the opening is closed with a closing body. The same procedure is followed to hold the intermediate portion of the other anti-vibration bolt with the other bolt holder. In this way, a total of three bolts are connected in a cross-shaped configuration via the bolt connector of claim 1.

[0012] Thus, the bolt connector of the invention of claim 1 has a simple structure, and since it only requires accommodating a total of three bolts inside through openings provided in the connector body and each bolt holder, and then closing each opening with a closing part, the connection of the three bolts is made easy. Moreover, when a rocking force is applied to any of the three bolts in a cross-connected state, the rocking force also acts on the bolt connector that connects the three bolts in a cross-connection state. However, since the bolt connector has a structure in which each bolt holder is simply connected in a straight line to both sides of the central connector body, the rocking force acts on the entire bolt connector and not only on specific components (connector body or pair of bolt holders) that make up the bolt connector, there is little to no risk of damage from external forces compared to a complex structure. Furthermore, according to the invention of claim 1, the intermediate portion of the central reference bolt is first housed inside through the opening of the connector body, and then the intermediate portions of the anti-vibration bolts are sequentially inserted from the openings of the pair of bolt holders, which face opposite directions to each other, toward the connector body, and placed inside, thereby connecting a total of three bolts in a crossed state, making the crossed connection work easier.

[0013] The invention of claim 2 is, A bolt connector for connecting two anti-vibration bolts in a crossed manner to one reference bolt, The connector body comprises a holding portion for holding the intermediate portion of the reference bolt, and a pair of bolt holders each having a holding portion for holding the intermediate portion of the two anti-sway bolts. The connecting body has a pair of connecting parts provided on both sides of the holding part, flanking the reference bolt which is held in the holding part, and the holding part has an opening that can partially receive and house the intermediate portion of the reference bolt, and a closing part that closes the opening to prevent the reference bolt from coming out. The pair of bolt holders are connected to the respective connecting parts in such a manner that they can each rotate independently relative to the connecting body, and each holding part of the pair of bolt holders has an opening that can partially receive and house the intermediate portion of the anti-vibration bolt, and a closing part that closes the opening to prevent the anti-vibration bolt from coming out. The three closing portions provided on the main body of the connector and the pair of bolt holders are each composed of separate closing bodies and are mounted in a position that prevents the bolts from coming out of the openings by sliding in the direction in which the reference and anti-vibration bolts, which are partially received in each holder, extend.

[0014] According to the invention of claim 2, in addition to the effects described in paragraphs "0011" and "0012" of the invention of claim 1, the closing of each opening in the connector body and the pair of bolt holders is achieved by sliding a separate closing body in the direction in which each bolt extends. This makes the closing operation easy, and since the closing body is positioned in the direction in which each bolt extends, the closing effect is also enhanced.

[0015] The invention of claim 3 is, A bolt connector for connecting two anti-vibration bolts in a crossed manner to one reference bolt, A connecting tool body provided with a holding portion for holding the middle portion of the reference bolt, and a pair of bolt holding bodies each provided with a holding portion for holding the middle portion of each of the two anti-vibration bolts. The connecting tool body has a pair of connecting portions provided on both sides of the holding portion, sandwiching the reference bolt held by the holding portion of the connecting tool body. The holding portion has an opening that can partially receive the middle portion of the reference bolt and accommodate it inside, and a closing portion that closes the opening to prevent the reference bolt from coming out. The pair of bolt holders are connected to the respective connecting parts in such a manner that they can each rotate independently relative to the connecting body, and each holding part of the pair of bolt holders has an opening that can partially receive and house the intermediate portion of the anti-vibration bolt, and a closing part that closes the opening to prevent the anti-vibration bolt from coming out. The rotation axis of each of the pair of bolt holding bodies passes through the axis of the reference bolt held by the holding portion of the connecting tool body and is arranged on the same straight line perpendicular to the axis.

[0016] According to the invention of claim 3, in addition to the effects described in paragraphs "0011" and "0012" of the invention of claim 1, since the connecting balance between the connecting tool body and the pair of bolt holding bodies rotatably connected to the connecting tool body is good, the rocking force acting on the bolt connecting tool acts on the whole of the bolt connecting tool in which three members are integrally connected and does not act on individual members, so that the structure is strong against rocking.

[0017] The invention of claim 4 is characterized in that, in the invention of any one of claims 1 to 3, the pair of bolt holding bodies are set so that the maximum inclination angles of each anti-vibration bolt with respect to the reference bolt are the same.

[0018] According to the invention of claim 4, when setting the inclination angle of each anti-vibration bolt to the maximum angle determined by the bolt connecting tool of the invention of claim 4, the bolt holding bodies on both sides can be freely rotated to the maximum with respect to the central connecting tool body, and the two anti-vibration bolts can be held by each bolt holding body, so that the cross-connection operation of a total of three bolts including the setting of the inclination angle of the anti-vibration bolts becomes easy.

[0019] The invention of claim 5 is a bolt connector for connecting two anti-vibration bolts in a crossed manner to one reference bolt, The connector body comprises a holding portion for holding the intermediate portion of the reference bolt, and a pair of bolt holders each having a holding portion for holding the intermediate portion of the two anti-sway bolts. The connecting body has a pair of connecting parts that protrude in opposite directions along a direction perpendicular to the axis of the reference bolt held in its own holding part, and its own holding part is capable of receiving and holding the intermediate part of the reference bolt inside through an opening that is open to the outside. The pair of bolt holders are independently and rotatably connected to each connecting portion of the connector body, and each holding portion of the pair of bolt holders has a pair of elastically deformable attachment pieces with insertion openings formed in opposite directions, and the pair of attachment pieces are spaced apart so as to allow the intermediate portion of the anti-vibration bolt to be positioned between them. The present invention is characterized in that, with the intermediate portion of the anti-vibration bolt positioned between a pair of attachment pieces of the bolt holder, the bolt holder is rotated, thereby inserting the intermediate portion of the anti-vibration bolt into the interior through the opposite insertion openings of the pair of attachment pieces, thereby securing and holding the anti-vibration bolt to the bolt holder.

[0020] The invention of claim 5 differs from the inventions of claims 1 to 3 in the configuration of a pair of bolt holders that are rotatably connected to each connecting portion on both sides of the connector body along the linear direction. To connect three bolts in a crossed state, for example, the intermediate portion of a reference bolt is received and held inside through the opening of the connector body, and in this state, the position of one bolt holder along the rotational direction relative to the connector body is determined so that the intermediate portion of one of the bolt holders can be positioned between the pair of attachment pieces of one of the bolt holders, and the bolt holder with the intermediate portion of the bolt holder positioned between its pair of attachment pieces is rotated in a predetermined direction so that the intermediate portion of the bolt holder is inserted into the opposite insertion openings of the pair of attachment pieces, thereby attaching one bolt holder to that bolt holder. In exactly the same way, the other bolt holder is attached to the other bolt holder, so that a total of three bolts are connected in a crossed state via the bolt connector of the invention of claim 5.

[0021] The invention of claim 6 is characterized in that, in the invention of claim 5, the pivot axes of each of the pair of bolt holders pass through the axis of the reference bolt held in the holding portion of the connector body, and are arranged on the same straight line perpendicular to that axis.

[0022] The bolt connector of the invention of claim 6 has a good connection balance between the connector body and a pair of bolt holders that are rotatably connected to the connector body. Therefore, the oscillating force acting on the bolt connector acts on the entire bolt connector, which consists of three integrally connected members, and does not act on the individual members, resulting in a structure that is resistant to oscillating. [Effects of the Invention]

[0023] The bolt connector of the present invention (a general term for the inventions of claims 1 to 3) has a simple structure in which a pair of bolt holders that hold two anti-vibration bolts are connected to both sides of a connector body that holds a central reference bolt via connecting parts. After housing and arranging a total of three bolts inside through openings provided in the connector body and each bolt holder, the openings are simply closed with closing parts, making the connection of the three bolts easy. Moreover, when a swaying force is applied to any of the three bolts in a cross-connected state, the swaying force also acts on the bolt connector that crosses the three bolts. However, since the bolt connector has a structure in which each bolt holder is simply connected in a straight line to both sides of the central connector body, the swaying force acts on the entire bolt connector and not only on specific components (connector body or pair of bolt holders) that constitute it. Therefore, compared to complex structures, there is little to no risk of damage from external forces. In particular, according to the invention of claim 1, the intermediate portion of the central reference bolt is first housed inside through the opening of the connector body, and then the intermediate portions of the anti-vibration bolts are sequentially inserted from the openings of the pair of bolt holders, which are facing opposite directions, toward the connector body, and positioned inside, thereby connecting a total of three bolts in a crossed state, making the crossed connection work easier. In particular, according to the invention of claim 2, in addition to the effects described in paragraphs "0011" and "0012" of the invention of claim 1, the closing of each opening in the connector body and the pair of bolt holders is achieved by sliding a separate closing body in the direction in which each bolt extends. Therefore, the closing operation is easy, and since the closing body is positioned in the direction in which each bolt extends, the closing effect is also enhanced. In particular, according to the invention of claim 3, in addition to the effects described in paragraphs "0011" and "0012" of the invention of claim 1, the bolt connector has a good balance between the connector body and a pair of bolt holders that are rotatably connected to the connector body. Therefore, the oscillating force acting on the bolt connector acts on the entire bolt connector, which consists of three integrally connected members, and does not act on individual members, resulting in a structure that is resistant to oscillating. [Brief explanation of the drawing]

[0024] [Figure 1] This is an exploded perspective view of the connector body D1 and the pair of bolt holders E1 that make up the bolt connector A1. [Figure 2] (a) and (b) are perspective views of the connector body D1 from different directions. [Figure 3] (a) to (c) are virtual plan view, virtual front view, and virtual bottom view of the connector body D1, respectively. [Figure 4] (a) is a front view of the connector body D1, and (b) is a cross-sectional view of (a) along line UU. [Figure 5] (a) and (b) are perspective views of the bolt holder E1 from different directions. [Figure 6-A] (a) and (b) are a front view of the bolt holder E1 and a cross-sectional view of (a) along the line V1-V1, respectively. [Figure 6-B] (c) and (d) are rear views of the bolt holder E1 and cross-sectional views taken along the line V2-V2 in Figure 6-A(a), respectively. [Figure 7] This is a perspective view of a bolt connector A1, in which bolt holders E1 are connected to both sides of the connector body D1. [Figure 8] This is a cross-sectional view in a similar state. [Figure 9] (a) and (b) are partial perspective views showing the insertion of the middle section of the suspension bolt B1 into the bolt insertion hole 8 of the central connector body D1 of the bolt connector A1. [Figure 10] This is a partial perspective view showing the suspension bolt B1 with its intermediate portion held by the connector body D1, and the anti-vibration bolt B2 held by one of the pair of bolt holders E1. [Figure 11] This is a partial perspective view showing the suspension bolt B1 and two anti-sway bolts B2 (a total of three bolts) connected in a cross-shaped manner to the bolt connector A1 at their intermediate points. [Figure 12]This is an overall perspective of a similar situation. [Figure 13] (a) and (b) are longitudinal cross-sectional views before and after the insertion of the closing body 21, which has been broken off from the connector body 1 or the holder body 31, into the closing body placement groove 12. [Figure 14] This is an exploded perspective view of the connector body D2 and the pair of bolt holders E2 that make up the bolt connector A2. [Figure 15] This is a cross-sectional view along line XX in Figure 14. [Figure 16] (a) and (b) are perspective views of the bolt holder E2 as seen from the front and back, respectively, and (c) is a front view of the same. [Figure 17] (a) and (b) are perspective views of a bolt connector A2, in which bolt holders E2 are connected to both sides of the connector body D2, viewed from different directions. [Figure 18] (a) and (b) are cross-sectional views along the lines Y1-Y1 and Y2-Y2 in Figure 17, respectively. [Figure 19] (a) and (b) are cross-sectional views of Figure 18(a) along the ZZ line, before and after the bolt holder E2 rotates relative to the connector body D2. [Figure 20] This is a perspective view showing the suspension bolt B1 with its middle section held by the central connector body D2 of the bolt connector A2. [Figure 21] (a) and (b) are perspective views of the intermediate and holding states of one of the bolt holders E2 of the connector body D2 holding one of the anti-vibration bolts B2. [Figure 22] This is a partial perspective view showing the state in which the other anti-vibration bolt B2 is held by the other bolt holder E2 of the connecting body D2, and a total of three bolts B1 and B2 are connected by crossing them. [Figure 23] This is an overall perspective of a similar situation. [Figure 24] (a) and (b) are exploded perspective and assembled perspective views, respectively, of a different bolt connector A2'. [Modes for carrying out the invention]

[0025] The present invention will be described in more detail below with reference to the best embodiment. [Examples]

[0026] First, with reference to Figures 1 to 13, the bolt connector A1 of Embodiment 1 of the present invention will be described. The bolt connector A1 prevents the suspension bolt B1 from swaying by supporting a suspension bolt B1, which is a reference bolt suspended vertically from the ceiling surface, with two anti-sway bolts B2 that are inclined on both sides of it, and connects the middle portions of the three bolts B1 and B2 (one suspension bolt B1 and two anti-sway bolts B2) in a crossing manner. The bolt connector A1 consists of a connector body D1 that holds the suspension bolt B1 and a pair of bolt holders E1 that are connected by a screw structure to both sides of the suspension bolt B1 held by the connector body D1 and each hold the anti-sway bolts B2 in an inclined position. Both the connector body D1 and the bolt holder E1 are formed by resin injection molding, and have a common configuration in which a partially threaded portion 9 is formed on the inner surface of a hollow semi-cylindrical bolt insertion hole 8 into which a suspension bolt B1 or anti-vibration bolt B2 is inserted through a bolt insertion opening 6, allowing each bolt B1 and B2 to be positioned so as not to shift in the axial direction. Furthermore, each bolt B1 and B2 inserted into the bolt insertion hole 8 has a common configuration in which a closing body 21 integrally provided on the connector body D1 and each bolt holder E1 is broken off, and the inner portion of the bolt insertion opening 6 is closed with the closing body 21, thereby preventing the suspension bolt B1 or anti-vibration bolt B2 from coming out of the bolt insertion opening 6. Therefore, the connector body D1 will be described in detail, and for the bolt holder E1, the same parts as the connector body D1 will be given the same reference numerals and only the necessary minimum explanation of the parts that differ from the connector body D1 will be provided.

[0027] As shown in Figures 1 to 4, the connector body D1 has a short cylindrical connector body 1, and male threaded cylinder portions 3 with male threaded portions 2 formed on their outer circumference are integrally provided protruding from both end faces 4 of the connector body 1. Inside one side of the central part of the connector body 1 along the axial direction, a bolt insertion opening 6 is formed perpendicular to the axis of the connector body 1, allowing the intermediate portion of the suspension bolt B1 to be inserted into the interior. On the other side, a closing body 21 for closing the bolt insertion opening 6 is provided protruding from the back of the bolt insertion opening 6 along a direction perpendicular to the axial direction of a partial female threaded portion 9 formed perpendicular to the axis of the connector body 1. The main body of the connector 1 has a bolt insertion groove 7 that gradually narrows in width from the bolt insertion opening 6 towards the back. At the end of the bolt insertion groove 7 (the inner end), a bolt insertion hole 8 with a semicircular cross-section corresponding to the cross-section of the suspension bolt B1 is formed. On the inner circumferential surface of the bolt insertion hole 8, a partially threaded portion 9 into which the suspension bolt B1 can be partially screwed is formed over almost its entire length. At the inner end of the bolt insertion groove 7 on the opposing inner surface, near the outer circumferential surface of the connector 1 beyond both ends of the partially threaded portion 9 formed on the inner circumferential surface of the bolt insertion hole 8, there are two pairs of interlocking projections 11, which bite into a portion of the male thread of the suspension bolt B1, thereby preventing the suspension bolt B1 placed in the bolt insertion hole 8 from retracting and fixing the position of the suspension bolt B1 relative to the connector 1. In the bolt insertion groove 7, a portion located a predetermined distance inward from the bolt insertion opening 6, a closing body placement groove 12 is formed, penetrating the main body 1. This groove allows for the insertion of a closing body 21 (described later) to close the bolt insertion opening 6 after the intermediate portion of the suspension bolt B1 has been placed in the bolt insertion placement hole 8.

[0028] The short cylindrical connector body 1 is formed by resin injection molding, and as described above, a total of three grooves, a bolt insertion groove 7, a bolt insertion placement hole 8, and a closing body placement groove 12, are formed continuously or intersecting and penetrate the connector body 1 in a direction perpendicular to the axis. A confirmation projection forming ring portion 14 is formed on each end face 4 where the male screw cylinder portion 3 is formed, and a total of four first intersection angle confirmation projections 13 are formed on the ring portion 14 having a continuous outer surface of the same outer diameter. The remaining portion, excluding the three grooves 7, 8, and 12 and the confirmation projection forming ring portion 14, does not have grooves formed and would be unnecessarily thickened, so a first material removal groove 15 is formed on the outer surface of the connector body 1 along the first thread center C1 of the male screw portion 2. By providing the first material removal groove 15, surface shrinkage during injection molding can be prevented or suppressed, the connector body 1 can be made lighter, and the resin raw materials used can be saved. Since the four first intersection angle confirmation protrusions 13 are formed at equal intervals along the circumferential direction, the central angle formed by adjacent first intersection angle confirmation protrusions 13 is 90°.

[0029] Furthermore, as shown in Figure 3, each end face 4 on which each male threaded portion 2 of the connector body 1 is formed to protrude is provided with an approximate annular thread-retraction prevention portion 17, which is partially connected to the male threaded portion 2, to prevent the bolt holder E1, which has a female threaded portion 33 that is screwed into each male threaded portion 2, from retracting. The outer surface of the semicircular portion K1 [see Figures 3(a) and (c)] of the approximate annular screw retraction prevention portion 17, which has a central angle of approximately 180°, forms a semicircle by having an outer diameter equal to the outer diameter of the threads of the male screw portion 2. The outer surface of the non-semicircular portion K2 [see Figures 3(a) and (c)], which has a central angle of approximately 180°, forms a non-semicircle such that its outer diameter gradually increases relative to the outer diameter of the male screw portion 2. One end of the non-semicircular portion K2 in the circumferential direction (the portion where the screw advance restricting projection 19 is provided) is connected to the semicircular portion K1 without any steps, while the other end has a predetermined screw retraction restricting step portion 18 and is connected to the semicircular portion K1 in a stepped manner. In the illustrated example, the step dimension of the screw retraction restricting step portion 18 is approximately 1.2 mm, relative to the outer diameter of the male screw portion 2, which is approximately 26 mm. At the seamless connection between the semicircular portion K1 and the non-semicircular portion K2, a screw-retaining projection 19 is provided projecting radially outward from the male screw cylinder portion 3. Each of the approximately annular screw-retraction prevention portions 17 of the connector body 1 has a screw-retaining projection 19 formed on opposite sides, with a phase difference of 180° between their formation positions.

[0030] The irregularly shaped rectangular plate-like closing body body 22, which constitutes the closing body 21 that is slidably inserted into the closing body arrangement groove 12 of the connector body 1, is integrally connected to the axial central part of the connector body 1, and on the side opposite to the part in the circumferential direction where the bolt insertion opening 6 is formed, such that its flat surface is aligned with the axial direction of the connector body 1. One end of the irregularly rectangular plate-shaped closure body 22 is connected to the connector body 1 via a connecting portion 23. Elastic pieces 30 are formed at both ends of the widthwise end of the closure body 22 by providing slits 29 that open towards the connecting portion 23 in the longitudinal direction. Locking pieces 24 are provided on the outside of the tip of each elastic piece 30. A cap portion 25 with an arc-shaped outer surface is integrally formed at the other end in the longitudinal direction. At both ends of the cap portion 25, hooking portions 26 are formed in a stepped manner to catch on the outer ends of the opening on the slide insertion side of the closure body arrangement groove 12. On one side of the closure body 22, a pair of pressing protrusions 27 are provided along the longitudinal direction at predetermined intervals in the width direction of the closure body 22. These protrusions press the suspension bolt B1, positioned in the bolt insertion hole 8, from the side opposite to the partial female thread portion 9, when the closure body 22 is slid into the closure body positioning groove 12 of the connector body 1. On the other side of the closure body 22, in the middle of the longitudinal direction, a gripping projection 28 is provided perpendicular to the plate surface of the closure body 22 to facilitate the operation of sliding the closure body 22 into the closure body positioning groove 12 of the connector body 1. The cap portion 25 protrudes beyond the plate thickness of the closure body 22 on the side of the closure body 22 where the gripping projection 28 is provided, in order to close the opening of the closure body positioning groove 12, including a portion of the bolt insertion groove 7 that connects to the closure body positioning groove 12 of the connector body 1.

[0031] Next, the bolt holder E1 will be described with reference to Figures 5 and 6. The bolt holder E1 is screwed into the male threaded portions 2 at both axial ends of the connector body D1. It is a short cylindrical member similar to the connector body D1, but has three features that are identical to the connector body D1: a female threaded portion 33 formed on the inner circumferential surface of the threaded hole 32 of the holder body 31; a bolt insertion opening 6 formed on the side of the holder body 31 opposite to the side where the female threaded portion 33 is formed in the axial direction, with a partial female threaded portion 9 formed on the inner side of the opening; and an irregular rectangular plate-shaped closing body 21 of the same structure formed at the end of the holder body 31 on the side where the female threaded portion 33 is formed, positioned parallel to the end face 35 of the holder body 31 and protruding in the direction perpendicular to the axis of the holder body 31. The only difference in these three features is that the bolt holder E1 is screwed into the male threaded portions 2 at both axial ends of the connector body D1, and is a short cylindrical member similar to the connector body D1. Therefore, the common components are only illustrated. Furthermore, since the bolt holder E1 has a female threaded portion 33 formed on the inner circumferential surface of the threaded hole 32 of the holder body 31, the length of the female threaded portion 33 of the bolt holder E1 along the second thread core C2 is slightly longer than the length of the male threaded portion 2 of the connector body D1 along the first thread core C1. The fitting cylindrical portion 34 is formed concentrically with the second thread core C2 of the female threaded portion 33 formed on the inner circumferential surface of the threaded hole 32 of the holder body 31, and the fitting cylindrical portion 34 is fitted inside the male threaded cylindrical portion 3 of the connector body D1 by screwing the connector body D1 and the bolt holder E1 together.

[0032] A confirmation projection forming ring portion 36 is formed on the outer circumferential surface of the retaining body 31, on the end face 35 on the side where the female thread portion 33 is formed. In the portions of the ring portion 36 where the circumferential phase differs by 180°, a set of three second crossing angle confirmation projections 37 are formed at predetermined intervals along the circumferential direction, thereby forming two sets of second crossing angle confirmation projections 37. The central angle of adjacent second crossing angle confirmation projections 37 is 15°. On the end face 35 of the retaining body 31, a screw advance / retraction restricting projection 38 is provided projecting in the direction of the second screw core C2 of the female thread portion 33. This projection contacts the screw advance restricting projection 19 of the connector body D1 when screwing in, thereby determining the maximum screw advance position of the connector body D1 and the bolt retaining body E1, and contacts the screw retraction restricting step portion 18 when screwing out, thereby restricting the maximum screw retraction position. The tip surface 38a of the screw advance / retraction restricting projection 38, which faces the screw advance restricting projection 19 of the connector body D1, is formed as a tapered surface so that when the connector body D1 and the bolt holder E1, which are screwed together, are screwed in to advance, the screw advance / retraction restricting projection 38 of the bolt holder E1 can overcome the interference between the screw advance restricting projection 19 of the connector body D1 and the screw advance / retraction restricting projection 38 of the bolt holder E 11 ,C 12 In Figure 5, 15' and 16 indicate the screw centers of the connector body D1 and the pair of bolt holders E1. In Figure 5, 15' and 16 indicate the first and second material removal portions formed along the direction of the second screw center C2 and the direction perpendicular thereto of the female thread portion 33 on the outer surface of the holder body 31, respectively.

[0033] Then, in order to connect the bolt holders E1 to both sides of the male threaded portion 2 of the connector body D1 along the direction of the thread center C1, the connector body D1 and the bolt holder E1 are rotated relative to each other to screw the male threaded portion 2 of the connector body D1 and the female threaded portion 33 of the bolt holder E1 together. Just before the "final rotation," the tip surface 38a of the screw advance / retraction restricting projection 38 provided on the end face 35 of the bolt holder E1 and the screw advance / retraction restricting projection 19 of the connector body D1 may come into contact. However, because the tip surface 38a of the screw advance / retraction restricting projection 38 is formed as a tapered surface along the direction of rotation, and the screw backlash caused by the screwing together synergistically causes the screw advance / retraction restricting projection 38 of the bolt holder E1 to pass the screw advance / retraction restricting projection 19 of the connector body D1 and enter the "final rotation" region. During the approximately half-turn from the start of the "final rotation," the screw advancement / retraction restricting projection 38 of the bolt holder E1 slides along the outer circumferential surface of the non-circular portion K2 of the approximately annular screw retraction prevention portion 17 of the connector body D1. As a result, the bolt holder E1 reaches just before the screw retraction restricting step portion 18 due to a small radial gap with respect to the connector body D1 and the overall elastic deformation of the resin bolt holder E1. Immediately after passing the screw retraction restricting step portion 18, the slight overall elastic deformation of the bolt holder E1 returns to its original shape, thereby preventing the bolt holder E1 from retracting relative to the connector body D1. After the screw advancement / retraction restricting projection 38 of the bolt holder E1 passes the screw advancement restricting step portion 18 of the connector body D1, if both D1 and E1 are rotated approximately half a turn further, the screw advancement / retraction restricting projection 38 of the bolt holder E1 comes into contact with the screw advancement restricting projection 19 of the connector body D1, and relative rotation of both D1 and E1 in the screw advancement direction beyond this point becomes impossible. With the female thread portion 33 of the bolt holder E1 screwed into one of the male thread portions 2 of the connector body D1, the bolt holder E1 is connected to one side of the connector body D1 by screwing.

[0034] When the female thread portion 33 of another bolt holder E1 is screwed onto the other male thread portion 2 of the connector body D1, the bolt holders E1 are connected to both sides of the connector body D1, as shown in Figures 7 and 8. In this connected state, the first thread core C1 of the male thread portion 2 of the connector body D1 and the second thread cores C2 of each of the two bolt holders E1 are aligned in the same straight line, and the first thread core C1 is the thread core C of the suspension bolt B1 placed in the bolt insertion hole 8 of the connector body D1. 11 It intersects with the first threaded part C of the female threaded portion 9 of the connector body D1. 11 The second threads C2 of each of the two bolt holders E1 are positioned parallel to each other.

[0035] The state shown in Figure 9 is one in which the female threads 33 of each bolt holder E1 are screwed to their maximum extent relative to the male threads 2 of each bolt holder E1, as the screw advance restricting projections 38 of the bolt holder E1 on both sides come into contact with a pair of screw advance restricting projections 19 formed at positions where the circumferential phase is shifted by 180° on each approximate annular screw advance prevention part 17 connected to each male thread 2 of the central connector body D1. Here, the bolt holders E1, which are of the same structure and are arranged on both sides of the central connector body D1, are arranged in reverse. From the maximum screw advance state described above, each bolt holder E1 on both sides can rotate in opposite directions relative to the central connector body D1 within the range of the semicircular part K1 connected to the male threads 2 of the connector body D1. Therefore, the maximum rotation angle of each bolt holder E1 on both sides relative to the central connector body D1 (the maximum inclination angle of each anti-vibration bolt B2 when viewed from the surface of each anti-vibration bolt B2 held by each bolt holder E1) is the same.

[0036] Next, referring to Figures 9 to 13, we will describe the process of connecting the suspension bolt B1 and the two suspension bolts B2 (a total of three bolts) in a cross shape using the bolt connector A1 described above, in a structure in which a suspension bolt B1 suspended from the ceiling wall W is flanked by anti-sway bolts B2 on both sides of the suspension bolt B1 to prevent the suspension bolt B1 from swaying. The upper ends of each bolt B1 and B2 are supported by a bolt upper end support 81 fixed to the ceiling wall W in a manner that allows for an adjustable inclination angle and rotation in all directions.

[0037] First, as shown in Figure 9, when the middle portion of the central suspension bolt B1 is positioned in the bolt insertion hole 8 inside the central connector body D1 of the bolt connector A1 through the bolt insertion opening 6, the male thread portion of the middle portion of the suspension bolt B1 partially screws into the partially female thread portion 9 formed on the inner circumferential surface of the bolt insertion hole 8, and specific thread portions of the suspension bolt B1 bite into the two pairs of upper and lower biting protrusions 11, which form a pair, thereby holding the middle portion of the suspension bolt B1 without axial displacement relative to the connector body D1. Subsequently, when the closing body 21, which is integrally provided on the connector body D1, is broken off and inserted into the closing body position groove 12 of the connector body D1 as shown in Figure 13, the bolt insertion opening 6 is closed, preventing the suspension bolt B1, whose middle portion is held in the bolt insertion hole 8 of the connector body D1, from coming out of the bolt insertion opening 6.

[0038] Next, as shown in Figure 10, one bolt holder E1 is tilted in a predetermined direction by the inclination angle of the anti-vibration bolt B2 relative to the connecting body D1 which holds the intermediate portion of the suspension bolt B1. Then, the intermediate portion of the anti-vibration bolt B2 is inserted into the bolt insertion hole 8 through the bolt insertion opening 6 of the bolt holder E1, and the bolt insertion opening 6 is closed with the closing body 21. Similarly, as shown in Figures 11 and 12, the other anti-vibration bolt B2 is held by the other bolt holder E1. As a result, the anti-vibration bolts B2 are inclined on both sides of the suspension bolt B1 which is suspended vertically from the ceiling wall W. The intersection of the three bolts B1 and B2 is connected to each other by the bolt connector A1, maintaining the intersection state. In Figure 12, a pipe 83 is suspended from the lower end of the suspension bolt B1 via a suspension device 82.

[0039] Furthermore, as shown in Figure 7, when the female threads 33 of the two bolt holders E1 are fully screwed into each male thread 2 of the connector body D1, the central second crossing angle confirmation projection 37 of the three uppermost second crossing angle confirmation projections 37 of the two sets of three second crossing angle confirmation projections 37 provided on each bolt holder E1 is positioned at the highest position, and as shown in Figure 3(a), when the closing body 21 is horizontal, the axial direction of the outer circumferential surface of the connector body portion 1 of the connector body D1 The four first crossing angle confirmation protrusions 13, formed at equal intervals in the circumferential direction at both ends of the bolt holder, are arranged symmetrically with respect to a vertical line passing through the first thread center C1 of the male screw portion 2. Therefore, by rotating the bolt holder E1 by a predetermined angle relative to the connector body D1 and confirming the position of a specific second crossing angle confirmation protrusion 37 of the bolt holder E1 after rotation relative to a specific first crossing angle confirmation protrusion 13 of the connector body D1, the rotation angle of the bolt holder E1 relative to the connector body D1 (the inclination angle of the anti-vibration bolt B2) can be estimated.

[0040] Furthermore, in a cross-connected state of the three bolts B1 and B2, if a swaying force is applied to any of the bolts B1 or B2, the swaying force will also act on the bolt connector A1 that cross-connects the three bolts B1 and B2. However, the bolt connector A1 has a structure in which each bolt holder E1 is simply connected in a straight line to both sides of the central connector body D1. Therefore, the swaying force acts on the entire bolt connector A1 and not only on specific components (connector body D1 or the pair of bolt holders E1) that make up the connector. Compared to a complex structure, there is little to no risk of damage from external forces. [Examples]

[0041] Next, with reference to Figures 14 to 23, the bolt connector A2 of Embodiment 2 of the present invention will be described. The bolt connector A2 consists of a connector body D2 that holds a suspension bolt B1 in a vertical position, and a pair of bolt holders E2 that are rotatably connected to both sides of the suspension bolt B1 held by the connector body D2 and hold an anti-sway bolt B2 in an inclined position. The connector body D2 and each bolt holder E2 are connected to each other by a locking structure. Here, the configuration of the connector bodies D1 and D2 of the bolt connectors A1 and A2 of Embodiments 1 and 2 in holding the suspension bolt B1 is the same, and the only differences in the configuration of the bolt connectors A1 and A2 of Embodiments 1 and 2 are the integral connection structure of the bolt holders E1 and E2 to the connector bodies D1 and D2, and the difference in the holding structure of the anti-sway bolt B2 of the bolt holders E1 and E2. Therefore, in describing the bolt connector A2 of Example 2, the same parts will be denoted by the same reference numerals, and the description will focus on the two structural differences that distinguish it from the bolt connector A1 of Example 1 described above.

[0042] As shown in Figures 14 and 15, the connector body D2 has its axis C relative to the connector body D1 of the previously described embodiment 1. 21The only difference is the configuration in which each bolt holder E2, which is rotatably arranged on both sides along the direction, is connected by a locking structure. That is, both ends of the connector body 1 in the axial direction are an inner and outer double short cylindrical structure, with the inner short cylindrical part 42 formed concentrically inside the outer short cylindrical part 41, which has a first crossing angle confirmation projection 13 formed on its outer circumference, and the annular space between the outer and inner short cylindrical parts 41 and 42 is a locking claw arrangement annular space 43 in which the first and second locking claws 53 and 54 of the bolt holder E2 are arranged. On the inner circumference of the outer short cylindrical part 41 of the connector body D2, in the parts where the phase differs by 180° along the circumferential direction, a pair of locking claws 44, which have an overall shape that is arc-shaped with a predetermined central angle and a triangular cross-section, are formed facing each other and projecting radially inward. In the inner side of the portion of the outer short cylindrical part 41 where each locking claw 44 is formed, a through hole 45 is formed radially to allow insertion of the tip of the first locking claw 53 of the bolt holder E2. The other components of the connector body D2 are the same as those of the connector body D1 described above, and are therefore denoted by the same reference numerals in the drawings.

[0043] As shown in Figures 14, 16, and 18, the two bolt holders E2 connected to the main body D2 along the axial direction of the connector body E2 have a regular octagonal plate shape on their outer surface. On the opposing inner surfaces of the connector body D2, a pair of first locking claws 53 and second locking claws 54 are integrally provided in an annular arrangement, inserted into the annular space 43 for the locking claw arrangement of the connector body D2. The pair of first locking claws 53 and the similar second locking claws 54 are assembled to the connector body D2 along the axial direction C of the connector body D2. 21 The axis C of the retaining body 52 which is positioned in the same location as 22Arranged symmetrically around the center, the first and second locking claws 53 and 54 are alternately positioned along the circumferential direction with a predetermined gap between them. Specifically, the pair of first locking claws 53, which have a triangular cross-section, are integrally formed at the rear end of the elastic wall portion 55 and are locked to the pair of locked claws 44 of the connector body D2 by the elastic deformation of the elastic wall portion 55, so their length along the circumferential direction corresponds to the locked claws 44. On the other hand, the second locking claws 54, which have a rectangular cross-section, are semi-annular and are integrally provided at the rear end of the semi-annular wall portion 56 facing radially inward. Due to the relative rotation of the bolt holder E2 with respect to the connector body D2, the second locking claws 54 are positioned on the rear side of the pair of locked claws 44 of the connector body D2, thereby locking them together. When the pair of locking claws 44 of the connector body D2 and the pair of first locking claws 53 of the bolt holder E2 are positioned opposite each other and pressed together, the pair of first locking claws 53 of the bolt holder E2 are elastically deformed radially inward and then restored to their original shape. As a result, the pair of locking claws 44 of the connector body D2 and the pair of first locking claws 53 of the bolt holder E2 lock together, and the connector body D2 and the bolt holder E2 are assembled (connected) as a single unit by a locking structure. Therefore, the semi-annular wall portion 56, on which the second locking claw 54 is integrally formed at the far end, does not undergo elastic deformation. In Figures 14 and 16, 57 indicates a visual recess formed in the center of each side of the holder body 52, which has a regular octagonal outer shape, for visually checking the relative rotation angle with respect to the connector body D2.

[0044] Furthermore, a bolt arrangement recess 61 for arranging the anti-vibration bolt B2 is located on the outer surface of the retaining body 52, centered on the axis C 21The bolt placement recess 61 is formed in a straight line passing through the center of each opposing side of the octagonal-shaped retaining body 52, and a partially threaded portion 62 for partially screwing in the intermediate portion of the anti-vibration bolt B2 is formed in the longitudinal center of the bolt placement recess 61. On the outer surface of the retaining body 52, at both longitudinal ends of the bolt placement recess 61, a pair of elastically deformable mounting pieces 64 are integrally provided at a predetermined distance apart, with bolt insertion openings 63 facing in opposite directions. The distance between the pair of mounting pieces 64 is such that the intermediate portion of the anti-vibration bolt B2 can be positioned. Therefore, as shown in Figure 21, when the bolt holder E2 is rotated relative to the anti-vibration bolt B2 with the intermediate portion of the anti-vibration bolt B2 positioned between the pair of mounting pieces 64, the intermediate portion of the anti-vibration bolt B2 is inserted into the interior of the pair of mounting pieces 64 from between the bolt insertion openings 63, and the intermediate portion of the anti-vibration bolt B2 is attached and held by the pair of mounting pieces 64.

[0045] Figures 19(a) and 19(b) are cross-sectional views of Figure 18(a) along the ZZ line, respectively, of the state immediately after the connector body D2 and the bolt holder E2 are pressed against each other and connected, and the state after the bolt holder E2 has been rotated 30° relative to the connector body D2 from the state immediately after connection. Therefore, in the state immediately after connection, as shown in Figure 18(a), the connector body D2 and the bolt holder E2 are connected to each other by the locking of the pair of locking claws 44 of the former and the pair of first locking claws 53 of the latter. When the bolt holder E2 is rotated 30° relative to the connector body D2 from the state immediately after connection, as shown in Figure 18(b), the connector body D2 and the bolt holder E2 are connected to each other by the locking of the pair of locking claws 44 of the former and the locking of a part of the pair of first locking claws 53 and a part of the pair of second locking claws 54 of the latter. Therefore, when the pair of locking claws 44 of the connector body D2 and the pair of first locking claws 53 of the bolt holder E2 move significantly in the circumferential direction relative to each other, the connector body D2 and the bolt holder E2 are connected by the locking of the pair of locking claws 44 of the connector body D2 and the pair of second locking claws 54 of the bolt holder E2. Thus, the pair of bolt holders E2 on both sides are connected to the central connector body D2 in a way that allows them to rotate relative to each other by the locking structure.

[0046] Therefore, to connect the three bolts B1 and B2, namely the suspension bolt B1 and the pair of anti-slip bolts B2, in a crossed state using the bolt connector A2, the following steps are taken. First, as shown in Fig. 20, the middle part of the suspension bolt B1 is inserted into the bolt insertion hole 8 of the connector body D2 at the center of the bolt connector A2, and the plug 21 is used to prevent it from coming out. Next, as shown in Fig. 21, with the middle part of the anti-slip bolt B2 placed between the pair of attachment pieces 64 of one bolt holder E2, when the bolt holder E2 is rotated in a predetermined direction with respect to the anti-slip bolt B2, the middle part of the anti-slip bolt B2 is inserted into the inside of the pair of attachment pieces 64 from between the bolt insertion openings 63, and the middle part of one anti-slip bolt B2 is attached and held by the pair of attachment pieces 64 of one bolt holder E2.

[0047] Similarly, when the middle part of the other anti-slip bolt B2 is held by the other bolt holder E2 of the connector body D2, as shown in Figs. 22 and 23, the three bolts B1 and B2, namely one suspension bolt B1 and two anti-slip bolts B2, are connected to each other in a crossed state via the bolt connector A2.

[0048] Also, as shown in Fig. 24, it is also possible to form a pair of locked claws 44 on the side of the bolt holder E2' and form the first and second locking claws 53 and 54 on the side of the connector body D2'.

Explanation of Reference Numerals

[0049] A1, A2: Bolt connectors B1: Suspension bolt (reference bolt) B2: Anti-slip bolt C1: First thread core of the male thread part of the male thread cylinder part of the connector body or the axis of the connector body C2, C 22 : Axis of rotation of the bolt holder C 11 : Axis of the suspension bolt held in the bolt insertion hole of the connector body D1, D2: Connector bodies E1, E2: Bolt holders 2: Male threaded portion (connecting part) of the connector body 6: Bolt insertion opening (opening) 8: Bolt insertion placement holes 21: Obstruction body (obstruction part) 33: Female thread portion (closed portion) of the bolt holder 44: Locking claws (connecting part) of the connector body 53: First locking claw (connecting part) of the bolt holder 54: Second locking claw (connecting part) of the bolt holder 63: Bolt insertion opening (opening) 64: Attachment piece

Claims

1. A bolt connector for connecting two anti-vibration bolts in a crossed manner to one reference bolt, The connector body comprises a holding portion for holding the intermediate portion of the reference bolt, and a pair of bolt holders each having a holding portion for holding the intermediate portion of the two anti-sway bolts. The connecting body has a pair of connecting parts provided on both sides of the holding part, flanking the reference bolt which is held in the holding part, and the holding part has an opening that can partially receive and house the intermediate portion of the reference bolt, and a closing part that closes the opening to prevent the reference bolt from coming out. The pair of bolt holders are connected to the respective connecting parts in such a manner that they can each rotate independently relative to the connecting body, and each holding part of the pair of bolt holders has an opening that can partially receive and house the intermediate portion of the anti-vibration bolt, and a closing part that closes the opening to prevent the anti-vibration bolt from coming out. A bolt connector characterized in that each opening of the pair of bolt holders is open in a direction opposite to the other, along the direction connecting each connecting portion of the connector body.

2. A bolt connector for connecting two anti-vibration bolts in a crossed manner to one reference bolt, The connector body comprises a holding portion for holding the intermediate portion of the reference bolt, and a pair of bolt holders each having a holding portion for holding the intermediate portion of the two anti-sway bolts. The connecting body has a pair of connecting parts provided on both sides of the holding part, flanking the reference bolt which is held in the holding part, and the holding part has an opening that can partially receive and house the intermediate portion of the reference bolt, and a closing part that closes the opening to prevent the reference bolt from coming out. The pair of bolt holders are connected to the respective connecting parts in such a manner that they can each rotate independently relative to the connecting body, and each holding part of the pair of bolt holders has an opening that can partially receive and house the intermediate portion of the anti-vibration bolt, and a closing part that closes the opening to prevent the anti-vibration bolt from coming out. The bolt connector is characterized in that the three closing portions provided on the connector body and the pair of bolt holders are all made up of separate closing portions, and are mounted in a position that prevents the bolts from coming out of the openings by sliding in the direction in which the reference and anti-vibration bolts, which are partially received in each holder, extend.

3. A bolt connector for connecting two anti-vibration bolts in a crossed manner to one reference bolt, The connector body comprises a holding portion for holding the intermediate portion of the reference bolt, and a pair of bolt holders each having a holding portion for holding the intermediate portion of the two anti-sway bolts. The connecting body has a pair of connecting parts provided on both sides of the holding part, flanking the reference bolt which is held in the holding part, and the holding part has an opening that can partially receive and house the intermediate portion of the reference bolt, and a closing part that closes the opening to prevent the reference bolt from coming out. The pair of bolt holders are connected to the respective connecting parts in such a manner that they can each rotate independently relative to the connecting body, and each holding part of the pair of bolt holders has an opening that can partially receive and house the intermediate portion of the anti-vibration bolt, and a closing part that closes the opening to prevent the anti-vibration bolt from coming out. The bolt connector is characterized in that the pivot axes of each of the pair of bolt holders pass through the axis of the reference bolt held in the holding portion of the connector body, and are arranged on the same straight line perpendicular to the axis.

4. The bolt connector according to any one of claims 1 to 3, characterized in that the pair of bolt holders are set so that the maximum inclination angle of each anti-vibration bolt with respect to the reference bolt is the same.

5. A bolt connector for connecting two anti-vibration bolts in a crossed manner to one reference bolt, The connector body comprises a holding portion for holding the intermediate portion of the reference bolt, and a pair of bolt holders each having a holding portion for holding the intermediate portion of the two anti-sway bolts. The connecting body has a pair of connecting parts that protrude in opposite directions along a direction perpendicular to the axis of the reference bolt held in its own holding part, and its own holding part is capable of receiving and holding the intermediate part of the reference bolt inside through an opening that is open to the outside. The pair of bolt holders are independently and rotatably connected to each connecting portion of the connector body, and each holding portion of the pair of bolt holders has a pair of elastically deformable attachment pieces with insertion openings formed in opposite directions, and the pair of attachment pieces are spaced apart so as to allow the intermediate portion of the anti-vibration bolt to be positioned between them. A bolt connector characterized in that, with the intermediate portion of the anti-vibration bolt positioned between a pair of attachment pieces of the bolt holder, the bolt holder is rotated, thereby inserting the intermediate portion of the anti-vibration bolt into the interior of the pair of attachment pieces from opposite insertion openings, thereby securing and holding the anti-vibration bolt to the bolt holder.

6. The bolt connector according to claim 5, characterized in that the pivot axes of the pair of bolt holders pass through the axis of the reference bolt held in the holding portion of the connector body and are arranged on the same straight line perpendicular to the axis.

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