JP3377377B2 - Fence beam pipe mounting bracket - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beam pipe fitting for a fence for attaching a beam pipe in a fence such as a road fence to a column.

[0002]

2. Description of the Related Art An example of a conventional beam pipe fitting is shown in FIGS. 10 and 11 (see Japanese Patent Laid-Open No. 7-292632). The beam pipe mounting member 1 is composed of a lower metal member 4 which is attached to the support column 3 with a fixing bolt 2, and an upper metal member 6 which covers the beam pipe 5 placed on the lower metal member 4. The lower metal fitting 4 has a strut mounting portion 7 that contacts the strut 3, and the fixing bolt 2 is screwed into a screw hole 7 a formed in the strut mounting portion 7 so that the strut mounting portion 7 is fixed to the strut 3.
Fixed to. In addition, the lower metal fitting 4 is the left and right beam pipes 5.
The projections 8 are fitted into the locking holes 5a formed in the respective holes. On the other hand, the upper metal fitting 7 has a screw hole 10 into which the connecting bolt 9 is screwed. The left and right beam pipes 5 are placed on the lower metal fitting 4 so that the projections 8 are fitted in the locking holes 5a, and the connecting bolts 9 inserted from the through holes 12 formed in the lower metal fitting 4 are placed on the beam pipe 5. The beam pipe 5 is fixed by screwing it into the threaded hole 10 on the upper metal fitting 6 side and tightening it.

[0003]

In the above-mentioned conventional beam pipe fitting 1, the bolts are made inconspicuous, but
Since the lower metal fitting 4 and the upper metal fitting 6 are still connected by the connecting bolt 9, the head of the connecting bolt 9 is exposed. It is desirable if it is possible to eliminate the exposure of the head of the coupling bolt 9 in appearance. Also regarding the workability of attaching the beam pipe, it is desired that the upper and lower metal fittings 4 and 6 can be easily connected without using bolts.

The present invention has been made in order to solve the above-mentioned conventional drawbacks, and provides a beam pipe mounting bracket which has a good appearance without exposing the bolts and has a good workability in mounting the beam pipe. The purpose is to

[0005]

SUMMARY OF THE INVENTION A beam pipe fitting according to the present invention for solving the above problems has a receiving portion for receiving a lower surface side of a beam pipe and a lower portion having a bolt insertion hole for passing a fixing bolt penetrating from a rear surface of a column. A lower metal fitting having a side mounting wall, a cover portion for covering the upper surface side of the beam pipe, and a notch opened on the lower side through which the fixing bolt is inserted and arranged on the pillar side of the lower mounting wall of the lower metal fitting. An upper metal fitting having an upper mounting wall, and a receiving portion of the lower metal fitting and a cover portion of the upper metal fitting each have a projection to be fitted into a locking hole formed in a lower surface or an upper surface of the beam pipe, The lower mounting wall of the lower metal fitting is characterized in that it has a nut accommodating / holding portion for accommodating and retaining the nut screwed with the fixing bolt so as not to rotate and move forward.

According to a second aspect of the present invention, in the beam pipe fitting according to the first aspect, a circular recess is formed on the rear surface of the upper mounting wall of the upper fitting, and the lower opening notch through which the fixing bolt is inserted is inserted into the recess. And a circular washer having a seat surface that comes into surface contact with the column is fitted so as to be slidably rotatable around the bolt axis.

According to a third aspect of the present invention, in the beam pipe mounting member according to the first aspect, a concave step portion is formed at a lower end portion of a lower mounting wall of the lower metal member, and the concave step portion is formed at a lower end portion of an upper mounting wall of the upper metal member. It is characterized in that a convex step portion that engages with is formed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described with reference to FIG.
-This will be described with reference to the embodiment shown in FIG. FIG. 1 is a front view showing a state in which a beam pipe 5 of a round pipe is attached to a column 3 of a round pipe by using a beam pipe attachment 15 of an embodiment of the present invention, and FIG. 2 shows only the beam pipe attachment 15 in FIG. FIG. 3 is a right side view showing FIG. 3, FIG. 3 is a sectional view taken along the line AA in FIG.
4 is an exploded view of the BB cross section of FIG. 2, and FIG. 5 is an exploded view of the AA cross section of FIG. As shown in these figures, the beam pipe fitting 15 includes a lower fitting 16, an upper fitting 17, and a washer 18.

The lower metal fitting 16 is provided with a receiving portion 21 for receiving the lower surface side of the beam pipe 5, and a lower mounting wall 22 having a bolt insertion hole 22a for inserting the fixing bolt 20 penetrating from the rear surface of the column 3. ing. The front side of the receiving portion 21 is curved in an arc shape so as to cover the lower half on the front side of the beam pipe 5. Further, as shown in FIG. 6, the receiving portion 21 has a locking hole 5a formed on the lower surface side of the beam pipe 5.
The projections 23 to be fitted on the left and right sides are provided, and arc-shaped ribs 24 for directly receiving the beam pipe 5 are provided at the positions of the projections 23. As shown in FIG. 5 and the like, the ribs 24 are formed in a partition wall-like shape on the back side so that a large gap is not formed around the beam pipe 5.

Further, inside the lower mounting wall 22, there is a nut housing for accommodating and holding a nut 25 to be screwed into the fixing bolt 20 so as not to rotate and move forward (to the left in FIG. 5). The holding unit 26 is provided. The nut accommodating / holding portion 26 has a recess 27a for preventing rotation of the nut 25 formed by a protrusion 27 formed inside the lower mounting wall 22, and the nut 25 is provided on the inner side adjacent to the recess 27a. This is a configuration in which a stopper 28 for restraining the forward movement is formed. Further, a concave step portion 29, which will be described in detail later, is formed at the lower end portion of the lower mounting wall 22.

The upper metal fitting 17 has a cover portion 31 for covering the upper surface side of the beam pipe 5 and a lower mounting wall 22 of the lower metal fitting 16.
And an upper mounting wall 32 disposed between the front surface of the column 3 and the front surface of the column 3. The front side of the cover 31 is the beam pipe 5
Is curved in an arc shape so as to cover the upper half on the front side. Further, as shown in FIG. 7, the cover 3 is provided with a projection 3 which is fitted into a locking hole 5a formed in the upper surface of the beam pipe 5.
3 to the left and right, and the beam pipe 5 at the position of the protrusion 33.
An arc-shaped rib 34 is provided so as to be in direct contact with. The upper mounting wall 32 is provided with a notch 35 that is open on the lower side and allows the fixing bolt 20 to pass therethrough. Further, a circular (circular shape excluding the notch) recess 36 into which the circular washer 18 is fitted is formed in the upper mounting wall 32.

The washer 18 has a cylindrical seat surface 18a along the outer peripheral surface of the column 3 which is a round pipe, and the fixing bolt 2
A circular shape that has a notch 18b that is open on the lower side through which 0 passes and that fits into a circular fitting hole 35a (which is a part of the notch 35) formed in the upper mounting wall 32 (circular shape excluding the notch). It is provided with a boss portion 18c (which is circular except for the notch).

Further, the upper mounting wall 32 of the upper fitting 17 is formed with a convex step 38 which engages with the concave step 29 at the lower end of the lower mounting wall 22. The convex step 38 and the concave step 29 serve as a fulcrum when the upper and lower metal fittings 16 and 17 are joined together by fastening the fixing bolt 20 at the engaging position between them. It is to prevent the coming off. Further, as shown in FIG. 7, the left and right sides of the upper metal fitting 17 are formed with wall portions 39 extending obliquely from both sides of the upper mounting wall 32 to the front side so that a large gap is not formed between the upper metal fitting 17 and the beam pipe 5. is doing.

A procedure for mounting the beam pipe 5 on the support column 3 using the above-mentioned beam pipe mounting member 15 will be described. First, the lower metal fitting 16 is placed on the front surface of the support column 3, the fixing bolt 20 is penetrated from the rear surface of the support column 3, passed through the bolt insertion hole 22a of the lower mounting wall 22, and the nut 25 placed on the nut accommodating and holding section 26 is attached. The tip of the fixing bolt 20 is screwed and loosely tightened. At this point, nut 2
5 can be operated by hand. In this way, the lower metal fitting 16 is temporarily fixed to the column 3. At this stage, the lower metal fitting 16 is inclined slightly downward. Next, the beam pipe 5 is placed on the lower metal fitting 16 so that the projection 23 of the lower metal fitting 16 is fitted into the locking hole 5a. In this case, the lower metal fittings 16 are temporarily fixed to the pillars 3 on both sides of the span of the corresponding pillar 3, and both ends of the left and right beam pipes 5 of the pillar 3 are respectively connected to the lower metal fittings 1.
It is good to put it on 6. Since the beam pipe 5 can be attached by such work, the attaching work of the beam pipe 5 can be performed by one person.

Next, the upper metal fitting 17 with the washer 18 fitted in the recess 36 is put over the beam pipe 5. In this case, since the notch 35 of the upper mounting wall 32 of the upper metal fitting 17 and the notch 18b of the washer 18 are both open on the lower side, after temporarily fixing the lower metal fitting 16 with the fixing bolt 20 as described above, the fixing bolt The upper mounting wall 32 of the upper metal fitting 17 can be fitted to the back surface of the lower mounting wall 22 by inserting 20 into the notches 35 and 18b. Next, the fixing bolt 20
When the nut 25 is rotated and tightened, the nut 25 is inserted into the protrusion 27 (recess 27a) of the nut accommodating and holding portion 26 and the stopper 2.
Since the detent and the forward movement are restricted by 8, the fixing bolt 20 is screwed into the nut 25,
With the nut 25, the lower mounting wall 22 of the lower bracket 16 and the upper bracket 17
The upper mounting wall 32 and the washer 18 are fastened and fixed to the support column 3. In this case, the lower metal fitting 16 described above
3, the lower metal fitting 16 rotates clockwise as shown by the arrow in FIG. 3, and the upper metal fitting 17 rotates counterclockwise. By rotating, the upper and lower metal fittings 16 and 17 are integrally coupled in the state of FIG. In this case, the outer surface 2 of the lower mounting wall 22 of the lower metal fitting 16
The taper 2b is tapered so that the gap between the upper part 2b and the upper mounting wall 32 becomes larger toward the upper part, so that the tightening force of the fixing bolt 20 can be sufficiently exerted. Further, after the lower mounting wall 22, the upper mounting wall 32, and the washer 18 are fastened and fixed to the support column 3 with the fixing bolts 20, the engagement between the concave step portion 29 and the convex step portion 38 is performed by the upper metal fitting 17 Works to prevent it from coming off.

As described above, in this beam pipe fitting 15, the only bolts to be used are the fixing bolts 20 whose heads are exposed on the back surface of the support column 3, and no other bolts or nuts are exposed. ， It is very good in appearance. Also, since the beam pipe 5 can be temporarily mounted by mounting the beam pipe 5 on the lower metal fitting 16 with the lower metal fitting 16 temporarily fixed to the pillar 3, it is not necessary for a person to be attached to each of the pillars 3 on both sides of the span. Beam pipe installation work can be performed. And the fixing bolt 20
At the time of final fixing, since the entrainment and forward movement of the nut 25 are restrained, the upper and lower metal fittings 16 and 17 can be joined by simply turning the fixing bolt 20, and the workability is good. At the same time, one person can also work in this respect.

Further, since the upper metal fitting 17 is fixed to the support column 3 via the washer 18 on the back surface thereof, and the washer 18 is slidably fitted in the recess 36 of the upper metal fitting 17, there is no gradient. When installing a fence on a certain road, as shown in the rear view of FIG. 8, the upper metal fitting 17 is rotated around the fixing bolt axis with respect to the washer 18 so that the beam pipe 5 corresponds to the road gradient. It can be tilted as indicated by the dashed line.

As shown in the bottom view of FIG. 9, the beam pipe 5 has a single projection 23, 3 when viewed from the top or bottom.
Since it is locked by 3, and the beam pipe 5
Is the receiving part 21 or the cover part 3 of the upper and lower metal fittings 16 and 17.
Since the ribs 24 and 34 are not in direct contact with 1 but are in contact with the ribs 24, 34, the beam pipe 5 can be tilted in the front-rear direction as shown by the chain double-dashed line at a slight angle. Therefore, it is possible to deal with some curves of the road.

In the above embodiment, the washer 18 is attached to the upper metal fitting 17
However, if it is not necessary to cope with the road gradient, the washer 18 may not be used and the upper mounting wall 32 of the upper metal fitting 17 may be brought into direct surface contact with the column 3. Further, in the above-mentioned embodiment, the case where the support 3 of the round pipe is targeted is explained, but it is naturally applicable to the support of the square pipe. In addition, when the support of the square pipe is targeted, it is possible to cope with the road gradient without using a washer. Also, the beam pipe is not necessarily limited to a round pipe, and may be a square pipe or the like. The material of each member is preferably aluminum alloy, but steel or other metal may be used.

[0020]

According to the present invention, the upper and lower metal fittings are connected by the tightening force of the fixing bolts penetrating from the rear surface of the column, and the connecting bolts for connecting the upper and lower metal fittings are not required. Workability is good.
In addition, since the bolts and nuts are not exposed except for the fixing bolts whose head is exposed on the back surface of the column, the appearance is extremely good. In addition, since the beam pipe is placed on the lower metal fitting while the lower metal fitting is temporarily fixed to the support pillar with the fixing bolts, and the upper metal fitting is put on the lower metal fitting, the upper and lower metal fittings are joined together. There is no need to slide the beam pipe to the left or right, and the installation work can be done by one person.

According to the second aspect, since the upper metal fitting can be rotated around the fixed bolt axis with respect to the washer, the beam pipe can be inclined corresponding to the road gradient even when the support pillar is a round pipe. You can

According to the third aspect, since the lower metal fitting and the upper metal fitting are engaged with each other at the concave step portion and the convex step portion at the lower ends of the respective mounting walls, the lower metal fitting and the upper metal fitting are tightened by the fastening force of the fixing bolt. When tightening and fixing, the engaging position becomes an appropriate fulcrum, and the lower and upper fittings move smoothly from the slightly open state to the closed state, ensuring reliable engagement between them. Done. Further, the convex step of the upper metal fitting engages with the concave step of the lower metal fitting, so that the upper metal fitting can be reliably prevented from coming off.

[Brief description of drawings]

FIG. 1 is a front view of a state in which a beam pipe is attached to a column by using a beam pipe attachment metal fitting of an embodiment of the present invention.

FIG. 2 is a right side view showing only the above beam pipe fitting.

FIG. 3 is a cross-sectional view taken along the line AA in FIG. 1 showing only the above beam pipe fitting.

FIG. 4 is an exploded cross-sectional view showing the BB cross section of FIG. 2 in an exploded manner.

FIG. 5 is an exploded cross-sectional view showing an AA cross section of FIG. 1 in an exploded manner.

FIG. 6 is a plan view of a lower metal fitting in the above beam pipe fitting.

FIG. 7 is a bottom view of an upper metal fitting in the above beam pipe fitting.

FIG. 8 is a rear view of the beam pipe fitting.

FIG. 9 is a bottom view of the beam pipe fitting.

FIG. 10 is a sectional view of a conventional beam pipe fitting.

11 is a front view of the beam pipe fitting of FIG.

[Explanation of symbols]

3 props 5 beam pipes 15 Beam pipe mounting bracket 16 Lower bracket 17 Upper bracket 18 washers 18a Cylindrical seating surface 18b Notch with lower opening 18c Boss 20 fixing bolt 21 Receiver 22 Lower mounting wall 22a Bolt insertion hole 23 Protrusion 24 ribs 25 nuts 26 Nut housing and holding part 27 Projection 27a recess 28 Stopper 29 concave step 31 Cover 32 Upper mounting wall 33 protrusions 34 ribs 35 Notch with lower opening 36 recess 38 Convex step

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Claims (3)

(57) [Claims] 1. A lower metal fitting having a receiving portion for receiving the lower surface side of the beam pipe and a lower mounting wall having a bolt insertion hole for passing a fixing bolt penetrating from the rear surface of the column, and covering the upper surface side of the beam pipe. An upper metal fitting having a cover portion and an upper mounting wall which is arranged on a pillar side of a lower mounting wall of the lower metal fitting and has a lower opening notch through which the fixing bolt is inserted;
The receiving portion of the lower metal fitting and the covering portion of the upper metal fitting are respectively
It has a projection that fits into a locking hole formed on the bottom or top of the beam pipe, and the lower mounting wall of the lower bracket has a nut that is screwed into the fixing bolt so that it does not move forward or move forward. A fence beam pipe mounting metal fitting having a nut storing and holding portion for storing and holding in the inside. 2. A circular recess having a circular recess formed in the rear surface of the upper mounting wall of the upper metal fitting, the recess having a lower open notch through which the fixing bolt is inserted, and having a seat surface that comes into surface contact with a column. 2. The beam pipe fitting for a fence according to claim 1, wherein said washer is fitted so as to be slidably rotatable about a bolt axis. 3. A concave step portion is formed at a lower end portion of a lower mounting wall of the lower metal fitting, and a convex step portion engaging with the concave step portion is formed at a lower end portion of an upper mounting wall of the upper metal fitting. The beam pipe fitting according to claim 1, characterized in that.