JP7193802B2 - Fastening member set, extension hanger bar set, and hanger bar extension system - Google Patents

Description

The present invention provides a fastening member set for fastening an extension hamburger bar to a suspension rod, an extension hanger bar set including such a fastening member set and an extension hanger bar, and , relates to a hanger bar extension system provided with a basic hanger bar from which an extension hanger bar to which a fastening member set is applied is hung.

Conventionally, there has been provided a technique of providing an additional extension hanger bar to an existing basic hanger bar (see, for example, Patent Document 1). In the technique described in Patent Document 1, a tubular body having a rectangular cross-section with rounded corners is used as the additional hanger bar, and a fastening member is connected to the end of the tubular body.

JP 2018-42954 A

However, in the technique described in Patent Document 1, the cross section of the tubular body is a rectangle with rounded corners, and in addition to the complexity of the tubular body structure, the fastening structure tends to be complicated. In other words, there is a problem that the fastening with the suspension rod is likely to be complicated and it is difficult to secure the strength.
The present invention has been made in view of this situation, and improves workability and connection strength by improving the connection structure for the additional hanger bar (pipe) and the suspension rod, and makes it easier to improve the fastening. An object is to provide a member set.
Another object of the present invention is to provide an additional hanger bar set that improves fastening performance by combining an additional hanger bar, a suspension rod, and a fastening member set according to the present invention. .
Further, the present invention provides a hanger bar extension system that improves fastening performance by combining a basic hanger bar, an extension hanger bar, a suspension rod, and a fastening member set according to the present invention. for other purposes.

A fastening member set according to the present invention is suspended from the basic hanger bar so as to connect an existing basic hanger bar and an additional hanger bar that is formed of a tubular body and is connected to the basic hanger bar from below. A fastening member set for fastening a suspension rod to the additional hanger bar, comprising: an end cap portion covering the end of the tubular body like a lid; a cap member comprising: a lower tip accommodating portion for accommodating a lower tip portion; a plurality of screen portions extending like screens from the end cap portion along the inner wall of the tubular body; and an inside of the screen portion. A columnar bush portion having an outer peripheral wall along the wall, a through hole positioned at the shaft portion of the bush portion, and a female screw portion positioned concentrically with the through hole in the middle of the through hole in the length direction. a bushing member, a head that presses the lower tip from the outside, and an extension from the head that passes through the lower tip, the lower tip accommodating portion, the end cap portion, and the through hole, and a male threaded member that is screwed into the female threaded portion, wherein the inner wall has a larger open side inner diameter on the open side than the end side inner diameter on the end cap side. The outer peripheral wall has an inclination such that the outer diameter of the rear end on the side farther from the end cap portion is larger than the outer diameter of the tip on the side closer to the end cap portion, and the outer diameter of the rear end is equal to the outer diameter of the end cap portion. The outer peripheral wall has a size larger than the inner diameter of the open side, and when the male threaded portion is screwed into the female threaded portion and the bushing portion is pulled into the partition portion, the partition portion is expanded and pressed against the inner wall of the pipe. The through hole has a hole inner diameter larger than the male screw outer diameter of the male screw portion on the side of the tip outer diameter with respect to the female screw portion, and the It is characterized by having a reduced hole inner diameter smaller than the outer diameter of the male screw on the rear end outer diameter side .
Therefore, in the fastening member set according to the present invention, the outer peripheral wall of the bush portion has an outer peripheral outer diameter large enough to expand the screen portion from the inside and press it against the pipe inner wall (pipe inner diameter). When the bush portion is pulled into the space formed by the screen portion by being screwed into the portion, the outer peripheral wall expands the screen portion from the inside toward the outside. Therefore, the screen is pressed against the inner wall of the pipe (the inner diameter of the pipe).
That is, the fastening member set according to the present invention improves the connection structure for the tubular body (additional hanger bar) and the suspension rod, improves workability and connection strength, and facilitates improvement in fastening performance.

Further, in the fastening member set according to the embodiment of the present invention, the lower end portion extends from the basic hanger bar and has a curved shape that supports the male screw portion from below and curves upward, The end cap portion is characterized by having a through hole through which the male threaded portion passes.
Further, in the fastening member set according to the embodiment of the present invention, the end cap portion includes a rim portion in which the tip of the tubular body is fitted on the outside of the screen portion, and the rim portion is connected to the screen portion. It is characterized by comprising a groove into which the tubular body is inserted.
Further, in the fastening member set according to one embodiment of the present invention, the screen portion is equally divided with respect to the tubular body via the screen separation portion.
Further, in the fastening member set according to one embodiment of the present invention, the cap member includes a protective frame portion surrounding and protecting the lower tip portion around the lower tip accommodating portion. .
Further, in the fastening member set according to one embodiment of the present invention, the pipe body is a circular pipe .

Further, the extension hanger bar set according to the present invention includes an extension hanger bar that is added by being connected to an existing basic hanger bar from below, and a hanger suspended from the basic hanger bar and connected to the extension hanger bar. An extension hanger bar set comprising a rod and a fastening member set for fastening the suspension rod to the extension hanger bar, wherein the fastening member set is a fastening member set according to the present invention. Characterized by
Therefore, since the extension hanger bar set according to the present invention includes the extension hanger bar, the suspension rod, and the fastening member set as a set, it is easy to set and the fastening performance is improved.
Further, a hanger bar extension system according to the present invention includes a basic hanger bar, an extension hanger bar that is added by being connected to the basic hanger bar from below, and a hanger hanger suspended from the basic hanger bar and connected to the extension hanger bar. and a fastening member set for fastening the suspension rod to the extension hanger bar, wherein the fastening member set is a fastening member set according to the present invention. characterized by
Therefore, in the hanger bar extension system according to the present invention, the basic hanger bar, the extension hanger bar, the hanging rod, and the fastening member set are combined into one set, which facilitates setting and improves fastening performance.

ADVANTAGE OF THE INVENTION The fastening member set according to the present invention has the effect of improving the connection structure for the additional hanger bar (pipe) and the suspension rod, improving workability and connection strength, and facilitating the improvement of fastening performance.
Further, the extension hanger bar set according to the present invention has the effect of improving the fastening performance by combining the extension hanger bar, the suspension rod, and the fastening member set according to the present invention.
In addition, the hanger bar extension system according to the present invention has the effect of improving the fastening property by combining the basic hanger bar, the extended hanger bar, the hanging bar, and the fastening member set according to the present invention. play.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall perspective view showing an overall overview of a fastening member set, an additional hanger bar set, and a hanger bar additional system according to an embodiment of the present invention, viewed obliquely from above; FIG. 2 is a structural schematic diagram schematically showing separated constituent members of the fastening member set according to the embodiment of the present invention; FIG. 3 is a partially cross-sectional perspective view perspectively showing, in a partially cross-section, a state in which the constituent members of the fastening member set shown in FIG. 2 are combined; FIG. 3 is a partially cross-sectional perspective view perspectively showing, in partial cross-section, the entirety of a cap member that constitutes the fastening member set shown in FIG. 2 ; FIG. 5 is a right side view of the cap member shown in FIG. 4 as viewed from the side of the lower tip accommodating portion; 5 is a left side view of the cap member shown in FIG. 4 as viewed from the screen portion side; FIG. FIG. 6 is a right side view showing a state in which the lower tip of the hanging rod is inserted into the lower tip accommodating portion of the cap member shown in FIG. 5; FIG. 3 is a structural schematic diagram schematically showing a state of a fastening member set (modified example) obtained by modifying the fastening member set shown in FIG. 2 following FIG. 2 ; FIG. 9 is a partially cross-sectional perspective view transparently showing a state in which the constituent members of the fastening member set shown in FIG. 8 are assembled;

Hereinafter, embodiments of the present invention (fastening member set 1, additional hanger bar set 2, hanger bar additional system 3) will be described with reference to the drawings (FIGS. 1 to 7).
FIG. 1 is an overall perspective view showing an overall outline of a fastening member set 1, an extension hanger bar set 2, and a hanger bar extension system 3 according to an embodiment of the present invention, viewed obliquely from above.
FIG. 2 is a structural schematic diagram schematically showing separated constituent members of the fastening member set 1 according to the embodiment of the present invention.
FIG. 3 is a partially cross-sectional perspective view showing, in a partially cross-sectional perspective, a state in which the constituent members of the fastening member set 1 shown in FIG. 2 are combined. Note that FIG. 3 is enlarged as compared with FIG. 2 .

The fastening member set 1 is suspended from the basic hanger bar 10 so as to connect the existing basic hanger bar 10 and the additional hanger bar 20 composed of the tubular body 21 and connected to the basic hanger bar 10 from below. The suspension rod 25 is fastened to the additional hanger bar 20. - 特許庁FIG. 1 shows the cap member 30 and the head portion 72 as constituent members of the fastening member set 1 .
The extension hanger bar set 2 includes an extension hanger bar 20 that is added by being connected to an existing basic hanger bar 10 from below, and a hanging rod 25 that is suspended from the basic hanger bar 10 and connected to the extension hanger bar 20. , and a fastening member set 1 for fastening the suspension rod 25 to the additional hanger bar 20 are combined into a set.
The hanger bar extension system 3 includes a basic hanger bar 10, an extension hanger bar 20 that is added by being connected to the basic hanger bar 10 from below, and a hanger suspended from the basic hanger bar 10 and connected to the extension hanger bar 20. A hanging rod 25 and a fastening member set 1 for fastening the hanging rod 25 to the additional hanger bar 20 are provided.

The fastening member set 1 includes a cap member 30, a bushing member 50, and a male screw member 70. As shown in FIG.
The cap member 30 includes an end cap portion 32 that covers the end of the tubular body 21 like a lid, and a lower tip accommodating portion that accommodates the lower tip portion 26 of the suspension rod 25 on the opposite side of the tubular body 21 with respect to the end cap portion 32 . and a plurality of screen portions 36 extending like screens from the end cap portion 32 along the pipe inner wall 21 w of the pipe body 21 .
The bush member 50 includes a columnar bush portion 52 having an outer peripheral wall 53 along the inner wall 37 of the screen portion 36, a through hole 54 positioned at the shaft portion of the bush portion 52, and a through hole 54 extending in the length direction. and a female screw portion 56 positioned concentrically with the through hole 54 in the middle.
The male screw member 70 has a head portion 72 that presses the lower tip portion 26 from the outside, and extends from the head portion 72 to pass through the lower tip portion 26 , the lower tip accommodating portion 34 , the end cap portion 32 and the through hole 54 . and a male threaded portion 74 screwed onto the female threaded portion 56 .
The end cap portion 32 also has a passage hole 38 through which the male screw portion 74 passes from the lower tip housing portion 34 (lower tip portion 26) to the bush portion 52 (through hole 54).
The male screw portion 74 has a uniform male screw outer diameter φb in the length direction. The through hole 54 has a hole inner diameter φ4 that is larger than the male screw outer diameter φb. Since the hole inner diameter φ4 is larger than the male screw outer diameter φb, the male screw portion 74 is screwed into the female screw portion 56 through the through hole 54 as it is. In addition, the male threaded portion 74 has a length that penetrates the female threaded portion 56 for reliable screwing.
The inner wall 37 has an inclination in which the open side inner diameter φ2 on the open side is larger than the end side inner diameter φ1 on the end cap portion 32 side. The rear end outer diameter φ6 on the far side from the end cap portion 32 has a large inclination with respect to the diameter φ5, and the rear end outer diameter φ6 is larger than the open side inner diameter φ2. When the bush portion 52 is pulled into the screen portion 36 by being screwed into the threaded portion 56, the screen portion 36 is expanded and has an outer diameter φ7 of such a size that the screen portion 36 is pressed against the pipe inner wall 21w.

The outer peripheral wall 53 of the bushing portion 52 has an outer peripheral outer diameter φ7 of a size that expands the screen portion 36 from the inside and presses it against the pipe inner wall 21w (pipe inner diameter φ10). When the bush portion 52 is pulled into the inner space formed by the screen portion 36, the outer peripheral wall 53 expands the screen portion 36 from the inside toward the outside. Therefore, the screen portion 36 is pressed against the pipe inner wall 21w (pipe inner diameter φ10).
That is, the fastening member set 1 improves the connection structure with respect to the tubular body 21 (additional hanger bar 20) and the suspension rod 25, improves workability and connection strength, and facilitates improvement of fastening performance.
The tubular body 21 is preferably a circular tube. Since the tubular body 21 is a circular tube, it is possible to apply the columnar bushing member 50 to the cap member 30, and the additional hanger bar 20 can be fastened to the suspension rod 25 because it becomes a simple and strong fastening member. It's easy to do. In addition, since it is a circular tube, it is easy to manufacture, and it is easy to obtain reliable strength.

The screen portion 36 has an inclination such that the open side inner diameter φ2 on the open side is larger than the end side inner diameter φ1 on the end cap portion 32 side. Therefore, insertion of the bush member 50 into the cap member 30 is facilitated. The bush member 50 has a large inclination of the rear end outer diameter φ6 on the far side from the end cap portion 32 with respect to the front end outer diameter φ5 on the side closer to the end cap portion 32 . Therefore, it becomes easy to insert the bush member 50 into the cap member 30 , screw the male screw portion 74 into the female screw portion 56 , and pull the bush member 50 toward the cap member 30 side.
The rear end outer diameter φ6 is larger than the open side inner diameter φ2. Therefore, when the bush member 50 is pulled toward the cap member 30, the screen portion 36 can be easily pressed against the pipe inner wall 21w (pipe inner diameter φ10). In other words, when the screen portion 36 is pressed against the pipe inner wall 21w (pipe inner diameter φ10), outer circumference outer diameter φ7+screen thickness T1=pipe inner diameter φ10.
The male threaded member 70 is preferably a countersunk screw. The countersunk screw tends to prevent the head 72 from protruding from the lower tip accommodating portion 34, and it is easy to reduce mechanical influence on the surroundings and ensure safety.
It is preferable that the screen height H1 is approximately the same as the bush length L1 or shorter than the bush length L1. This facilitates effective use of the outer peripheral wall 53 of the bushing portion 52 and facilitates securing strength. The screen height H1 and the screen thickness T1 must be dimensioned to ensure the strength of the screen portion 36 .

FIG. 4 is a partially cross-sectional perspective view showing, in a partially cross-sectional perspective, the entirety of the cap member 30 that constitutes the fastening member set 1 shown in FIG. 2 .
FIG. 5 is a right side view of the cap member 30 shown in FIG. 4 as viewed from the lower tip accommodating portion 34 side.
6 is a left side view of the cap member 30 shown in FIG. 4 as viewed from the screen portion 36 side.
FIG. 7 is a right side view showing a state in which the lower end portion 26 of the suspension rod 25 is inserted into the lower end accommodating portion 34 of the cap member 30 shown in FIG.

The lower tip portion 26 of the suspension rod 25 extends from the basic hanger bar 10 and has a curved shape that supports the male screw portion 74 from below and curves upward. It has a through hole 38 for The curved shape of the lower tip portion 26 has an annular space through which the male screw portion 74 passes and continues to the through hole 38 .
The lower tip portion 26 located in the lower tip accommodation portion 34 supports the male screw portion 74 from below due to its curved shape. Therefore, the suspension rod 25 can easily hold the tubular body 21 reliably. Further, the male threaded portion 74 passes through the passage hole 38 of the end cap portion 32 while being supported by the lower tip portion 26, and is screwed into the female threaded portion 56 of the through hole 54, so that it is self-aligning and accurate. Easy to get screwed in.
The end cap portion 32 has a rim portion 40 into which the tip of the tubular body 21 is fitted outside the screen portion 36 , and the rim portion 40 has a groove portion 42 into which the tubular body 21 is inserted between the rim portion 40 and the screen portion 36 . That is, the tip of the tube 21 can be easily inserted into the groove 42 . Therefore, the tip of the tubular body 21 is likely to be reliably protected. Also, the positioning of the end cap portion 32 with respect to the tubular body 21 is easy and accurate.

The screen portion 36 is positioned equally with respect to the tubular body 21 via the screen separation portion 46 . Since the screen portions 36 are equally spaced on the circumference of the tubular body 21 via the screen separation portion 46, the pressure applied by the screen portions 36 to the inner wall 21w of the pipe is equalized, and the partition portions 36 and the tubular body 21 are separated from each other. It is easy to equalize and reinforce the fixing strength between.
In the present embodiment, four screen portions 36 are equally arranged on the circumference, and the screen portions 36 are evenly pressed against the pipe inner wall 21w in four directions, so that strong fixation can be easily obtained. The ratio of the screen separation width W2 of the screen separation portion 46 to the screen width W1 of the screen portion 36 in the circumferential direction is, for example, about 1:3.
The cap member 30 includes a protective frame portion 44 that surrounds and protects the lower tip portion 26 around the lower tip accommodation portion 34 . Since the cap member 30 includes the protective frame portion 44 around the lower tip accommodating portion 34, the exposure of the lower tip portion 26 to the outside is suppressed, and safety and appearance can be easily ensured.
The bush portion 52 and the end cap portion 32 are preferably made of synthetic resin. Moreover, the suspension rod 25, the male screw member 70, and the female screw portion 56 are preferably made of metal.

The extension hanger bar set 2 includes an extension hanger bar 20 (tubular body 21), a hanging rod 25, and a fastening member set 1. - 特許庁
That is, since the extension hanger bar set 2 includes the extension hanger bar 20, the suspension rod 25, and the fastening member set 1 as a set, it is easy to set and the fastening performance is improved.
The hanger bar extension system 3 includes a basic hanger bar 10, an extension hanger bar 20, a suspension rod 25, and a fastening member set 1. - 特許庁
That is, since the hanger bar extension system 3 includes the basic hanger bar 10, the extension hanger bar 20, the suspension rod 25, and the fastening member set 1 as a set, it is easy to set and the fastening performance is improved.

A fastening member set 1m as a modification of the fastening member set 1 (FIG. 2 and others) according to the present embodiment will be described with reference to FIGS. 8 and 9. FIG.
FIG. 8 is a structural schematic diagram schematically showing a state of a fastening member set 1m (modified example) obtained by modifying the fastening member set 1 shown in FIG.
FIG. 9 is a partially cross-sectional perspective view showing, in a partially cross-sectional perspective, a state in which the constituent members of the fastening member set 1m shown in FIG. 8 are assembled.
Since most of the configuration of the fastening member set 1m is substantially the same as the configuration of the fastening member set 1, similar configurations are given the same reference numerals and descriptions thereof are omitted, and mainly different components will be described.
The fastening member set 1m differs from the fastening member set 1 in the bush member 50m. That is, the through-holes 54 in the fastening member set 1 have a uniform hole inner diameter φ4, whereas the through-holes 54m in the fastening member set 1m have different inner diameters. Specifically, the through hole 54m has a hole inner diameter φ4 larger than the male screw outer diameter φb and a reduced hole inner diameter φ8 smaller than the male screw outer diameter φb.

The bushing member 50m has a bushing portion 52m and a through hole 54m located at the axial center (not shown) of the bushing portion 52m. Here, the through hole 54m has a hole inner diameter φ4 larger than the male screw outer diameter φb of the male screw portion 74 on the tip outer diameter φ5 side with respect to the female screw portion 56, and the rear end outer diameter with respect to the female screw portion 56. On the φ6 side, it has a reduced hole inner diameter φ8 which is smaller than the male screw outer diameter φb.
Since the hole inner diameter φ4 is larger than the male screw outer diameter φb, the male screw portion 74 passes through the through hole 54m on the tip outer diameter φ5 side and is screwed into the female screw portion 56 . In addition, since the reduced hole inner diameter φ8 is smaller than the male screw outer diameter φb, the male screw portion 74 that has passed through the female screw portion 56 is located on the rear end outer diameter φ6 side of the reduced hole inner diameter φ8 (bush portion 52m) to form a biting portion 74s.
That is, the male threaded portion 74 made of metal bites into the bushing portion 52m made of synthetic resin to form a biting portion 74s.
The fastening member set 1m is applied to the extension hanger bar set 2 and the hanger bar extension system 3 as it is in the same manner as the fastening member set 1.

INDUSTRIAL APPLICABILITY A fastening member set, an additional hanger bar set, and a hanger bar expansion system according to the present invention can be effectively used when adding hanger bars.

1, 1m fastening member set 2 extension hanger bar set 3 hanger bar extension system 10 basic hanger bar 20 extension hanger bar 21 pipe body 21w pipe inner wall 25 suspension rod 26 lower tip 30 cap member 32 end cap part 34 lower tip Housing portion 36 Screen portion 37 Inner wall 38 Passing hole 40 Edge portion 42 Groove portion 44 Protective frame portion 46 Screen separation portion 50, 50m Bush member 52, 52m Bush portion 53 Peripheral wall 54, 54m Through hole 56 Female screw portion 70 Male screw member 72 Head 74 Male threaded portion 74s Biting portion H1 Screen height L1 Bushing length T1 Screen thickness W1 Screen width W2 Screen separation width φ1 End side inner diameter φ2 Open side inner diameter φ4 Hole inner diameter φ5 Tip outer diameter φ6 Rear end outer diameter φ7 Periphery Outer diameter φ8 Reduced hole inner diameter φ10 Pipe inner diameter φb Male screw outer diameter

Claims (8)

A hanging rod suspended from the basic hanger bar is attached to the additional hanger bar so as to connect an existing basic hanger bar and an additional hanger bar which is composed of a tubular body and is connected to the basic hanger bar from below. A fastening member set to be fastened,
an end cap portion that covers the end of the tubular body in a lid-like manner; a lower tip accommodation portion that accommodates the lower tip portion of the hanging rod on the opposite side of the tubular body to the end cap portion; a plurality of partitions extending like partitions from the end cap along the inner wall of the pipe;
A columnar bush portion having an outer peripheral wall along the inner wall of the screen portion, a through hole positioned in the shaft portion of the bush portion, and a female positioned concentrically with the through hole in the middle of the length direction of the through hole. a bushing member comprising a threaded portion;
a head that presses the lower tip from the outside; and a head that extends from the head and passes through the lower tip, the lower tip accommodating portion, the end cap portion, and the through hole and into the female screw portion. a male threaded member having a male threaded portion to be screwed into;
The inner wall has an inclination such that the open side inner diameter on the open side is larger than the end side inner diameter on the end cap portion side,
The outer peripheral wall has a slope in which the outer diameter of the rear end on the side farther from the end cap portion is larger than the outer diameter of the tip on the side closer to the end cap portion, and the outer diameter of the rear end is larger than the inner diameter on the open side. big,
The outer peripheral wall has an outer circumference outer diameter large enough to expand the screen portion and press it against the inner wall of the pipe when the male screw portion is screwed into the female screw portion and the bush portion is pulled into the screen portion. death,
The through-hole has a hole inner diameter larger than the male screw outer diameter of the male screw portion on the tip outer diameter side with respect to the female screw portion, and the rear end outer diameter side with respect to the female screw portion, having a reduced hole inner diameter smaller than the male thread outer diameter
A fastening member set characterized by: The fastening member set according to claim 1,
The lower tip portion extends from the basic hanger bar and has a curved shape that supports the male screw portion from below and curves upward, and the end cap portion has a passage hole through which the male screw portion passes. A fastening member set characterized by: The fastening member set according to claim 1 or claim 2,
The end cap portion has a rim portion into which the tip of the tubular body is fitted on the outside of the screen portion, and the rim portion has a groove portion into which the tubular body is inserted between the rim portion and the screen portion. fastener set. A fastening member set according to any one of claims 1 to 3,
A fastening member set, wherein the screen part is positioned equally with respect to the tubular body via a screen separation part. A fastening member set according to any one of claims 1 to 4,
The fastening member set, wherein the cap member includes a protective frame portion surrounding and protecting the lower tip portion around the lower tip accommodating portion. A fastening member set according to any one of claims 1 to 5,
A fastening member set, wherein the pipe body is a circular pipe. An extension hanger bar that is added by being connected to an existing basic hanger bar from below, a suspension rod that is suspended from the basic hanger bar and is connected to the extension hanger bar, and the suspension rod that is connected to the extension hanger bar. An extension hanger bar set that combines a fastening member set to be fastened to
An extension hanger bar set, wherein the fastening member set is the fastening member set according to any one of claims 1 to 6 . a basic hanger bar, an additional hanger bar that is added by being connected to the basic hanger bar from below, a suspension rod suspended from the basic hanger bar and connected to the additional hanger bar, and the suspension rod. A hanger bar extension system comprising a fastening member set to be fastened to the extension hanger bar,
A hanger bar extension system, wherein the fastening member set is the fastening member set according to any one of claims 1 to 6 .

Images