JP5893718B1 - Wiring support bracket - Google Patents

Abstract

An object of the present invention is to provide a wiring support fitting that can simplify the construction work when installing various cables on a curved wall surface or ceiling surface, etc., and can also reduce the construction cost. The wiring support fitting 20 that engages with the mounting base 10 is configured. A claw-shaped rotation preventing piece 15 is provided on the support leg 11 of the mounting base 10. The mounting base 10 is fixed to the wall surface at the position of the bolt insertion hole 14 that opens the bolt insertion hole 14 at one place on the fixing plate surface 12. The engaging leg 21 of the wiring support metal 20 is provided with a locking end 21 </ b> A spreading in a substantially T-shape in a plane. An inlet 13 </ b> A is formed so as to expand at one end of the engagement hole 13 of the mounting base 10. The locking end portion 21A is configured to engage the engagement hole 13 from the introduction port 13A. [Selection] Figure 1

Description

  The present invention relates to a wiring support metal fitting that can simplify construction work and reduce construction costs when wiring various cables along a curved wall surface in a tunnel, for example.

  When fixing a cable, a conduit, etc. along the curved wall surface of a tunnel, the construction which attaches a base to a wall surface beforehand and engages the wiring support metal fitting which clamps cables from both sides to a base is performed. In some cases, a wiring support fitting formed in a gate shape so as to straddle cables is engaged with the base. In either case, it is necessary to attach a pedestal to the curved wall surface in advance.

  A channel material is used as a conventional pedestal. In order to fix the channel material to the wall surface, anchor bolts are buried in the wall surface, the anchor bolts are passed through the longitudinal end portions of the channel material, and are fixed with fixing nuts.

  On the other hand, as a conventional wiring support fitting for sandwiching cables from both sides, for example, a fastening fixture for piping shown in Patent Document 1 has been proposed. The tightening fixture forms a pressing portion that presses the piping from both sides, and engages the pressing portion with an attachment member that is previously fixed to the tunnel wall surface as a pedestal.

  The attachment member fixed to the tunnel wall surface is formed by bending a plate member into a U-shape and is composed of a horizontal receiving portion and a pair of legs. Furthermore, a rectangular opening is formed in the receiving part. And when fixing the piping, first screw and fix it to the wall surface with a screw penetrating the longitudinal center of the mounting member, and then a pair of the piping sandwiched in the opening of the fixed receiving portion The pipes are fixed by engaging the pressing portions.

Japanese Patent No. 2909404

  When a channel material is used as a conventional pedestal, it is necessary to embed two anchors in advance on the wall surface in order to fix one pedestal to the wall surface. Therefore, the longer the distance in the tunnel, the longer the construction time and construction cost. In addition, when using a wiring support fitting formed in a gate shape so as to straddle cables, it is necessary to preliminarily indicate the position for fixing the wiring support fitting on the channel material.

  On the other hand, according to the fixing tool disclosed in Patent Document 1, since the fixing member is fixed by one screw passing through the longitudinal center of the mounting member, the mounting member rotates around the screw and is fixed to the mounting member. There is a possibility that the fixing position of the cable to be shifted is shifted.

  Moreover, since this fixture uses a pair of pressing portions that sandwich the piping from both sides, it requires an operation of screwing the pressing portions together while engaging these pressing portions with the opening of the mounting member. For this reason, the fixing work takes much time and effort.

  Therefore, the present invention was created to solve the above-mentioned problems, and simplifies the construction work when installing wiring members such as various cables and conduits on the curved wall surface and ceiling surface in the tunnel. It is another object of the present invention to provide a wiring support metal fitting that can reduce the construction cost.

In order to solve the above-described problem, the first means of the present invention is that a belt-like plate is bent in a U-shaped cross section so that a fixed plate surface 12 is formed between a pair of support legs 11. The mounting base 10 includes a rectangular engagement hole 13 and a wiring support fitting 20 that engages with the engagement hole 13 of the mounting base 10 to fix the wiring member P. A plurality of anti-rotation pieces 15 projecting in a claw shape are provided at the wall surface contact portion of the leg 11 and are configured to be fixed to the wall surface at the position of the bolt insertion hole 14 opened in one place of the fixing plate surface 12. The wiring support fitting 20 is formed with a fixed surface portion 22 between a pair of engagement leg portions 21, and the engagement leg portion 21 and the fixed surface portion 22 form a U-shaped cross section surrounding the side surface of the wiring member P. The engaging leg portion 21 has a locking end portion 21A that expands in a substantially T-shaped plane. Comprising, in the wiring support bracket configured to engage the locking edge 21A from inlet port 13A which is flared on one end portion of the engaging hole 13 of the mounting base 10 to the engaging hole 13, the wiring support The metal fitting 20 is disposed on the wiring member P side of the fixed surface portion 22, and a presser 23 that contacts along the peripheral side surface of the wiring member P, and is screwed to the fixed surface portion 22 so as to connect the presser 23 to the wiring. A fixing screw 24 for pressing and fixing to the side surface of the member P is provided, and a locking nut 25 for preventing loosening is attached to the fixing screw 24 .

  The second means is provided with a locking projection 13 </ b> B for temporarily fixing the locking end 21 </ b> A introduced from the introduction port 13 </ b> A on the back side of the end of the engagement hole 13 of the mounting base 10.

  The third means opens the bolt insertion hole 14 in the longitudinal center portion of the mounting base 10 in the mounting base 10, and the rotation preventing piece 15 extends from the longitudinal center of the mounting base 10 to both ends. It is configured so that the height gradually increases as it reaches.

  In the fourth means, an anti-slip 16 having an uneven shape is formed at the engaging edge of the engaging hole 13 of the mounting base 10.

  As in claim 1 of the present invention, the mounting base 10 is provided with a plurality of anti-rotation pieces 15 projecting in a nail shape at the wall contact portion of the support leg 11 and is opened at one place on the fixed plate surface 12. Since it is configured to be fixed to the wall surface at the position of the bolt insertion hole 14, the rotation of the mounting base 10 can be prevented even if the mounting base 10 is fixed at the position of one bolt insertion hole 14. . As a result, it is possible to simplify the construction work when installing a wiring member such as a conduit, and to reduce the construction cost.

  In addition, the engagement leg portion 21 of the wiring support metal fitting 20 includes a locking end portion 21 </ b> A widened in a substantially T-shape in a plane, and the locking end portion 21 </ b> A is expanded to one end portion of the engagement hole 13 of the mounting base 10. Since it is configured to engage the engagement hole 13 from the formed introduction port 13A, it is possible to simplify the mounting work of the wiring member P. That is, it is possible to mount the wiring member P inside the wiring support bracket 20 in a state where the one engagement leg portion 21 of the wiring support bracket 20 is locked to the engagement hole 13 and the wiring support bracket 20 is inverted. Become. As a result, the work of attaching the wiring member P to the wiring support metal fitting 20 is an extremely simple work that can be performed with one hand.

Furthermore, the wiring member P is in a state where a total of four portions are engaged with the engagement holes 13 by the locking end portions 21 </ b> A formed at the ends of the pair of engagement leg portions 21. Therefore, the wiring member P can be reliably fixed without rotating the wiring support metal fitting 20 even if some load is applied to the wiring support metal fitting 20 during work or after wiring.
And since the wiring support metal fitting 20 is provided on the wiring member P side of the fixed surface portion 22 and includes the presser 23 that contacts along the peripheral side surface of the wiring member P, the peripheral side surface of the wiring member P is pressed and fixed. At this time, the crushing of the side surface of the wiring member P can be reduced .
In addition, since the lock screw 25 for preventing loosening is attached to the fixing screw 24, it is possible to prevent the fixing screw 24 from being loosened by various vibrations or earthquakes originating from the tunnel .

  According to the second aspect of the present invention, since the engaging protrusion 13B for temporarily fixing the end portion 21A introduced from the introduction port 13A is provided on the back side of the end portion of the engaging hole 13 of the mounting base 10, the fixing work of the wiring member P is performed. Streamline. That is, after engaging one engagement leg 21 of the wiring support fitting 20 in the engagement hole 13 and mounting the wiring member P inside the wiring support fitting 20, the other engagement leg 21 is attached to the engagement protrusion 13B. Can be temporarily fixed. For this reason, the operator can perform work in a state in which his / her hand is released from the wiring member P, and the fastening operation of the fixing screw 24 after the wiring member P is attached to the wiring support fitting 20 can be performed very easily. it can. Further, the locking protrusion 13B also has an effect of preventing the engagement leg portion 21 from coming off after the fixing screw 24 is tightened from the temporarily fixed state.

  According to the third aspect, the bolt insertion hole 14 of the mounting base 10 is opened in the longitudinal center portion of the mounting base 10, and the rotation prevention piece 15 is gradually increased from the longitudinal center of the mounting base 10 to both ends. If the anchor bolt U that penetrates through the center of the mounting base 10 is strongly tightened, the anti-rotation piece 15 is more strongly pressed against the curved wall surface as it is closer to the longitudinal end of the attached base 10. Demonstrates great anti-rotation power.

  According to the fourth aspect of the present invention, the anti-slip 16 having the concavo-convex shape is formed on the engaging edge of the engaging hole 13 of the mounting base 10, so that the support hole 31 can receive various vibrations derived from the tunnel. The engaged position of the wiring support fitting 20 can be prevented and the engaged state can be maintained for a long time.

  Thus, according to the present invention, it is possible to simplify the construction work when installing wiring members such as various cables and conduits on the curved wall surface and ceiling surface in the tunnel, and the construction cost can be reduced. This achieves the original goal of enabling reduction.

It is an exploded perspective view at the time of use which shows one form for carrying out the present invention. It is a sectional side view of the use condition when it is similarly attached to the wall surface of the tunnel. It is the rear view which similarly looked at the mounting base at the time of use from the wall surface side. It is a partially cutaway sectional view showing the main part of the mounting base. It is a side view which shows the state which attaches a wiring member to a wiring support metal fitting. It is a side view which shows the state which temporarily fixed the wiring support metal fitting to the latching protrusion of an engagement hole. It is a side view which shows the state which fixed the wiring member with the fixing screw of the wiring support metal fitting. It is a perspective view in an example suitable for similarly supporting one wiring member. It is a perspective view in an example suitable for similarly supporting two wiring members.

  Hereinafter, one mode for carrying out the present invention will be described with reference to the drawings. A main configuration of the present invention includes a mounting base 10 and a wiring support metal fitting 20 (see FIG. 1).

  The mounting base 10 is a member that is fixed to, for example, a wall surface or a ceiling surface of a road tunnel, and a belt-like plate is bent to form a U-shaped cross section (see FIG. 1). A fixed plate surface 12 is formed between the pair of support legs 11. A bolt insertion hole 14 is opened at an arbitrary position on the fixed plate surface 12. When the anchor bolt U previously embedded in the wall surface is inserted into the bolt insertion hole 14 and fixed with the fixing nut 30, the mounting base 10 is attached to the wall surface (see FIG. 2). It is also possible to fix the mounting base 10 by screwing a mounting bolt to an anchor embedded in the wall surface in advance (not shown).

  The position of the bolt insertion hole 14 that opens in the fixed plate surface 12 is arbitrarily changed depending on the length of the mounting base 10 and the number of wiring members P. For example, when the wiring member P to be fixed is one and the mounting base 10 is short, it is formed on one end side of the mounting base 10 (see FIG. 8). Moreover, when fixing the several wiring member P to the long attachment base 10, it forms in the longitudinal center of the attachment base 10 (refer FIG. 9). Thus, one bolt insertion hole 14 is formed at an arbitrary position according to the length of the mounting base 10 and the number of wiring members P to be fixed.

  When a long mounting base 10 is used, the mounting base 10 is provided to be curved. For example, when the degree of curvature of the curved surface in the tunnel is about R = 4000 mm, the anchor bolt U can be tightened at the position of the bolt insertion hole 14 disposed in the longitudinal center of the mounting base 10 to adhere closely to the degree of curvature. The mounting base 10 is configured to be bent to a certain extent.

  An appropriate number of engagement holes 13 having a rectangular shape are further formed in the fixing plate surface 12 of the mounting base 10 (see FIGS. 1, 8, and 9). And the one end part of this engagement hole 13 is expanded, and the inlet 13A is formed. A wiring support fitting 20 to be described later engages in the engagement hole 13 from the introduction port 13A. In the illustrated example, a knurled anti-slip 16 having an uneven shape is formed on the engaging edge of the engaging hole 13 (see FIG. 4). This slip stopper 16 prevents the displacement of the wiring support fitting 20 that engages with the engagement hole 13. In addition, an indication mark or the like indicating a position for fixing the wiring member P such as a conduit can be provided at an appropriate position on the fixing plate surface 12 (not shown).

  On the other hand, a plurality of anti-rotation pieces 15 are protruded from the support leg 11 of the mounting base 10 (see FIGS. 1, 8, and 9). The anti-rotation piece 15 protrudes in a claw shape and is connected to the wall contact portion of the support leg 11. The rotation preventing piece 15 bites into a curved wall surface or the like to prevent the mounting base 10 from rotating (see FIG. 2). Moreover, when using the elongate attachment base 10, it is comprised so that the rotation prevention piece 15 may become high gradually from the longitudinal center of the support leg 11 to both ends (refer FIG. 9). ). With this configuration, when the anchor bolt U is strongly tightened at the position of the bolt insertion hole 14 opened in the longitudinal center portion of the mounting base 10, the mounting base 10 is curved when contacting the wall surface while being curved. The anti-rotation piece 15 closer to the longitudinal end is more strongly pressed against the wall surface. Therefore, the tightening force of the anchor bolt U is configured to be used as much as possible for the rotation preventing force.

  The wiring support bracket 20 is a member that engages with the engagement hole 13 of the mounting base 10 and fixes the wiring member P (see FIG. 2). The wiring support bracket 20 has a U-shaped cross section in which a fixed surface portion 22 is formed between a pair of engagement leg portions 21 (see FIG. 1). The engagement leg portion 21 and the fixed surface portion 22 engage with the engagement hole 13 while surrounding the side surface of the wiring member P.

  The engagement leg portion 21 includes a locking end portion 21 </ b> A that spreads in a substantially planar T shape (see FIG. 1). Then, the locking end portion 21 </ b> A is inserted into the engagement hole 13 from the introduction port 13 </ b> A of the engagement hole 13 of the mounting base 10 and engaged with the engagement hole 13. If it does so, it will be in the state engaged with the engagement hole 13 in the position of a total of four places by 21 A of latching edge parts formed in the edge part of a pair of engagement leg part 21 (refer FIG. 3). Furthermore, a locking projection 13B that temporarily fixes the locking end 21A introduced from the introduction port 13A is provided on the back side of one end of the engagement hole 13 (see FIG. 6). As will be described later, the locking protrusion 13B is a part that facilitates the work from the state in which the wiring member P is placed on the wiring support fitting 20 until the wiring member P is fixed.

  A retainer 23 is disposed on the wiring member P side of the fixed surface portion 22 (see FIG. 1). The presser 23 is a member that contacts the peripheral side surface of the wiring member P, and is configured to press and fix the wiring member P to the fixing plate surface 12 of the mounting base 10 by the fastening force of the fixing screw 24. Yes. On the other hand, the fixing screw 24 is provided on the fixing surface portion 22 of the wiring support fitting 20, and is provided with a lock nut 25 for preventing loosening (see FIG. 7).

  Next, a usage example of the present invention will be described. When a predetermined number of wiring members P are wired on a wall surface of a road tunnel or the like, first, a predetermined length provided with a number of engagement holes 13 corresponding to the number of wirings. The mounting base 10 is selected. And the anchor bolt U is embed | buried sequentially along the wiring direction on the wall surface to wire. Next, in a state where the mounting base 10 is substantially orthogonal to the wiring direction, the anchor bolt U is inserted into the bolt insertion hole 14 of the mounting base 10, and the fixing nut 30 is screwed and tightened. If the mounting base 10 is long, a gap is generated in the longitudinal center portion of the mounting base 10 with respect to the wall surface. Even if the mounting base 10 is in a floating state, the mounting base 10 is strongly screwed into the anchor bolt U. Is curved from the longitudinal center, so that all the anti-rotation pieces 15 provided on the support leg 11 can be brought into contact with the wall surface.

  In order to attach the wiring member P to the wiring support fitting 20 and fix it to the mounting base 10, one engagement leg 21 of the wiring support fitting 20 is locked in the engagement hole 13 of the mounting base 10, and the wiring support fitting is fixed. 20 is reversed (see FIG. 5). In this state, the wiring member P is placed inside the wiring support bracket 20. Further, while the wiring member P is placed, the other engagement leg 21 is temporarily fixed to the engagement protrusion 13B of the engagement hole 13 (see FIG. 6). When the fixing screw 24 is tightened from the temporarily fixed state, the presser 23 presses and fixes the wiring member P. Thereafter, the fastening position of the fixing screw 24 is further fixed by the lock nut 25 (see FIG. 7).

  In the present invention, the case of attaching to the wall surface of the tunnel is described as an example of use, but the present invention is not limited to the inside of the tunnel, but can be used similarly on other wall surfaces such as curved wall surfaces and ceiling surfaces in buildings and other buildings. is there. In addition, this invention is not limited to the structure, the shape, etc. which were shown by these description, the code | symbol etc. in drawing.

P Wiring member U Anchor bolt 10 Mounting base 11 Support leg 12 Fixing plate surface 13 Engagement hole 13A Inlet 13B Locking protrusion 14 Bolt insertion hole 15 Anti-rotation piece 16 Non-slip 20 Wiring support fitting 21 Engagement leg 21A Locking end Part 22 Fixing part 23 Presser 24 Fixing screw 25 Lock nut 30 Fixing nut

Claims (4)

A belt-shaped plate is bent to form a U-shaped cross section, a fixed plate surface is formed between a pair of support legs, and a rectangular engagement hole is opened on the fixed plate surface, and the mounting base is engaged The mounting base includes a plurality of anti-rotation pieces protruding in a claw-like manner at the wall contact portion of the support leg, and a fixing plate surface. The wiring support metal fitting is formed with a fixed surface portion between a pair of engagement leg portions, and the engagement leg portion and the fixed surface portion are configured to be fixed to the wall surface at the position of the bolt insertion hole opened in one place. And the engaging leg portion includes a locking end portion that extends in a substantially T-shaped plane, and the locking end portion is provided with an engagement hole in the mounting base. in the wiring support bracket configured to engage the inlet port which is expanded formed at one end of the engaging hole, wiring The holding fixture is disposed on the wiring member side of the fixed surface portion, and a presser that contacts the peripheral surface of the wiring member, and a screw that is screwed to the fixed surface portion to fix the presser to the side surface of the wiring member. A wiring support fitting comprising: a fixing screw for fixing the locking screw, and a locking nut for preventing loosening .   The wiring support metal fitting according to claim 1, wherein a locking projection for temporarily fixing the locking end portion introduced from the introduction port is provided on the back side of the engagement hole end portion of the mounting base.   In the mounting base, the bolt insertion hole is opened in the longitudinal center portion of the mounting base, and the rotation prevention piece gradually increases in height from the longitudinal center of the mounting base to both ends. The wiring support metal fitting according to claim 1 or 2, which is configured as described above.   The wiring support metal fitting according to any one of claims 1 to 3, wherein a slip stopper having a concavo-convex shape is formed on an engagement edge of the engagement hole of the mounting base.

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