JPH11241528A - Connecting structure between fence support and cross bar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecting structure between a fence support and a cross bar which at both the ends of the cross bar erected between middle supports, checks a rotation in a direction of the periphery of the cross bar and has the connecting structure having strength and durability. SOLUTION: In a connecting structure between a support and a cross bar, a nut 8 fixed to one tubular core member of a cross bar 2 and a bolt part 31 of a connecting member 3 are mutually connected. In this case, a washer 5 equipped with a locking part 51 is inserted between the nut 8 and the bolt part 31 to check the rotation of the cross bar 2, and a different-shaped support part 33 of the connecting member 3 is fitted in and indserted through a bearing cap 4 fixed to another tubular core material of the cross bar 2, and they can therefore mutually rotate together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure of a fence and a crosspiece, which is installed in a park, a plaza, a promenade, a plant, or the like, and is composed of a plurality of supports and a crosspiece installed between the supports. It is preferably used as a wooden fence.

[0002]

2. Description of the Related Art Conventionally, artificial trees have been used for fences installed in parks, open spaces, promenades, plants, and the like in place of wood from the viewpoint of saving timber resources and improving durability. As a structure of this artificial wood, a pipe, a rod, a plate, etc. made of a rigid material such as a metal is used as a core material, and a thick outer layer made of a material such as concrete or synthetic resin is formed around the core material, and the outer layer of the outer layer is formed. The surface is generally subjected to artificial wood processing that resembles the grain and bark of a natural tree.

[0003] When assembling a fence using such a pseudo-wood as a material, as a connecting structure of right and left crossbars or an end support and a crossbar which are connected with the intermediate support and the support interposed therebetween, two side surfaces or ends of the upper portion of the intermediate support are used. Side 1 of upper part of column support
At the point, the cut end of the crosspiece is fitted into the cutout recess provided in the outer layer portion, and the connecting material through hole is provided by penetrating the tubular core material of the support at the bottom of the cutout recess of the intermediate support,
Conventionally, various developments have been made on the basis of a method of connecting adjacent crossbars across a support by a rod-shaped or tubular connecting material inserted into each tubular core material and then connecting them by bolts and nuts. Was.

However, the present applicant has noticed that these prior arts relate to a connecting structure between a crosspiece and a support, and in particular, hardly considers fixing of the crosspiece in the circumferential direction. Invented a reliable connection method that does not cause rotation in the direction, disclosed in Patent No. 2603785,
A safe artificial wood with a secure connection between the struts and rungs was provided.

[0005] That is, the contents are as follows: "A notch provided on the bottom of one of the notches provided on both sides of the outer layer portion on the upper side of the intermediate support, or on a side surface of the outer layer portion above the end support. Between the bottom of the recess and the end of the rung,
A washer having a locking portion formed on both sides of the plate body is interposed, and a nut is fixed in advance in an end core material of one of the crosspieces, and a bolt is used as a connecting material,
One of the crossbars and the column are fixed by tightening the bolts and nuts, and at the same time, when the bolts and nuts are tightened, the locking portion of the washer is used to secure the end of the crossbar to the end face of the crossbar. The connection structure prevents the crossbar from rotating in the circumferential direction by this washer. "

Here, this connection structure will be described once again with reference to FIG. 9 in the case of an intermediate support. Intermediate column 1
The ends of the left and right crosspieces 2 are inserted into the notch recesses 6 provided on the left and right sides of the crosspiece 2. Lumber 2
2, and a washer 5 having a locking portion 51 is interposed between the end face of one crosspiece 2 and the bottom face of the cutout recess 6, and is fixed in advance in the ends of the connecting bolt 30 and the core material 22 of the crosspiece 2. When the nut 8 is tightened in the axial direction, the locking portion 51 is cut into the end face of the crosspiece 2 and the bottom surface of the cutout recess 6 so that not only the fixing of the one crosspiece 2 to the column 1 but also its axial direction is possible. In addition, the fixing in the circumferential direction is also ensured.

In the figure, a bearing collar 40 is a cap-shaped part provided in advance in the end of the core member 22 of the other crosspiece 2, and has a flange formed at one end from the end of the core member 22. An insertion hole 45 is provided at the center thereof so that the other cross bar 2 can be inserted into the other cutout recess 6 from the connection bolt head 35 of the connection bolt 30 to the other end. A bar or bolt provided on the side (the right side in the drawing) is inserted into the insertion hole 45 so as to lightly support the crosspiece 2 in the other cutout recess 6.

[0008] The applicant of the present invention controls the rotation of the crossbar by the locking portion 51.
Patent No. 260 based on design structure blocked by
In the description of No. 3785, "the support collar 40 is not necessarily required".

[0009]

That is, when a force in the direction of rotating in the circumferential direction is applied to the crosspiece that is bridged and fitted between the two columns and connected by the above-described connection structure, The rotation force functions because the locking portion provided in the washer interposed between the end face of the crosspiece and the cutout recess bottom of the support bites into each of the end face of the crosspiece and the cutout recess bottom of the support to prevent the rotation force. However, this means that all the rotational force acting on one rung is blocked on only one side of the rung, and the other side of the runge, that is, the bearing collar is inserted and the On the side where the connecting member is inserted, the function of preventing any rotational force on the crossbar in the circumferential direction does not work.

Therefore, even in a normal state, even if a force is applied to the crosspiece in a direction of rotating the crosspiece in the circumferential direction, the locking portion provided on the one side of the crosspiece with the washer functions to prevent the rotation force. However, if the artificial wood material such as a pillar or a crossbar is distorted or contracted over time after construction, or if an unexpected external force is applied, the connecting portion is displaced, and the locking portion provided with the washer described above. The bite into the end face of the crossbar and the bottom of the cut-out recess of the pillar becomes sweeter,
As a result, there is an inherent problem that the force resisting the circumferential rotational force applied to the crossbar is reduced.

The present invention solves the above-mentioned drawbacks of the prior art, and in a connection structure between a post and a crosspiece, it is possible to reliably prevent the circumferential rotation force of the crosspiece at both ends of the crosspiece that is bridged between the supports. With a connected structure, a series of connected crossbars are connected as an almost continuous body, so even if slight distortion or displacement occurs over time,
The purpose of the present invention is to provide a connection structure of a safe fence post and a crossbar that does not cause the crossbar to rotate or separate from the column.

[0012]

In order to solve the above-mentioned problems, the present inventor of the present invention disclosed in Japanese Patent No. 2603785 states that "the rotational force applied to one crosspiece is supported only on one side of the crosspiece. The nut is fixed in the core of the end of the cross bar by the action of the washer locking part that cuts in between the end face of one of the cross bars and the bottom of the cutout recess of the column. By screwing and tightening the bolt part of
While preventing rotation of one of the crossbars in the circumferential direction, and for the non-circular support portion insertion hole of the bearing cap fitted and fixed in the end of the core of the other crossbar,
By inserting a non-circular rod-shaped support part with a non-circular cross section extending on the side opposite to the bolt part of the connecting material in a state where rotation of the connecting material of the support cap around the axis is prevented, the rotational force applied to the crosspiece is reduced. , Through the connecting material, also to the locking part of the washer cut into between the end face of the rung to be connected next with the strut and the bottom of the cutout recess of the post, and to rotate the rung in the circumferential direction at both ends of the rung. It is intended to have a function of blocking.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway exploded perspective view showing an embodiment of the present invention, and FIG.
It is an expanded sectional view of the principal part of the connection fixing part of the intermediate support | pillar and a crosspiece. FIG. 3 (a) is a front view showing an example of a connecting member used in each of the above figures, and (b) is a cross-section of the rod-shaped support portion at the AA portion viewed in the direction of (a). FIG. 4 (a) is a partial sectional view showing the shape, and FIG.
FIG. 3 is a front view showing an example of a bearing cap used in FIG. 2 and FIG. 2, and (b) is a side view thereof. FIG. 5 (a) is a front view showing an example of the washer used in FIGS. 1 and 2, and (b) is a top view showing the locking portion.

In these figures, reference numeral 1 denotes an intermediate support, and 2 denotes a crosspiece. As shown in FIG. 2, the outer layers 11 made of synthetic resin are formed on the peripheral surfaces of metal tubular cores 12 and 22, respectively.
21 is provided, and the surface thereof is made of a round bar-shaped pseudo-wood material which is subjected to pseudo-wood processing. 6, 6 is the middle support 1
Are provided symmetrically on the left and right of the upper part of the upper part, and are cutout recesses cut in accordance with the shape of the crosspiece, into which the ends of the left and right crosspieces 2 are inserted. A connecting material through hole 7 is provided between the cutout recesses 6.

The connecting member 3 described below is inserted into the connecting member through hole 7 with the bolt portion 31 facing left from the cutout recess 6 on the right side in FIG.

Here, as shown in FIG. 3, the connecting member 3 includes a bolt portion 31 for screwing with a nut 8 described below, which is fixed in the end of the tubular core member 22 of the crosspiece, and the bolt portion 3.
A turning head 32 for turning the nut 1 into contact with the connecting material through hole 7 on the bottom surface of the notch recess 6 through the washer 34 when the nut 1 is screwed and tightened; And a rod-shaped support portion 33 having a non-circular cross-sectional shape and extending from the rotating head 32 to the opposite side of the bolt portion 31.

The rotating head 32 of the connecting member 3 is brought into contact with the washer 34 and, when screwing and tightening, the portion in contact with the washer 34 is formed in a shape having a small contact area such as a hemisphere to reduce friction with the washer 34. The rod-shaped support portion 33 is inserted into a non-circular support-portion insertion hole 41 of the support cap 4 to be described later, so that the rod-shaped support portion 33 and the support-portion insertion hole 41 can communicate with each other. By engaging the non-circular portions, the bearing cap 4 is inserted and supported in a state where the rotation of the connecting member 3 of the bearing cap 4 around the axis is prevented.

The method of manufacturing the connecting member 3 includes cutting and pressing using a metal material, welding using the turning head 32 and screwing the bolt 31 together, and also integrally casting. And those made of castings formed by the method.

The nut 8 is provided with a tubular core material 22 of one of the crosspieces 2.
Is formed in a cap shape so as to be fixed in advance, and is fixed to the tubular core member 22 by caulking from the outside. As shown in this embodiment, the shape of the nut 8 is a cap-like shape in which a female screw is engraved on the inner peripheral surface of the short cylinder or the nut is welded and a lid-like body is formed on the outer peripheral surface of the short cylinder. This is preferable because a thin lid can be easily fixed inside the tubular core member 22 by fitting and caulking from the end of the tubular core member 22.

It is preferable that the nut 8 is fixed in advance in the tubular core member 22 of the crosspiece 2 before forming the outer layer when the crosspiece 2 is formed. A known method such as spot welding is employed.

The support cap 4 is a cap-shaped part provided in advance in the end of the tubular core 22 of the other crosspiece 2, and has a flange formed at one end from the end of the tubular core 22. It is inserted so as to abut.

As shown in FIG. 4, the bearing cap 4 has a non-circular shape having a dimension slightly larger than the cross-sectional shape of the non-circular rod-shaped support portion 33 of the connecting member 3 on the bottom surface of the cap. Is provided, and as described above, the rod-shaped support portion 33 of the connecting member 3 is connected to the support portion insertion hole 4.
1, the non-circular portions are engaged with each other, and the support cap 4 is inserted and supported in a state where the rod-shaped support portion 33 prevents the support cap 4 from rotating around the axis of the connecting member 3. is there.

The support portion insertion hole 41 of the bearing cap 4
The shape of the support member 4 and the cross-sectional shape of the rod-shaped support portion 33 of the connecting member 3 are oblong in this embodiment, but when the rod-shaped support portion 33 of the connecting member 3 is inserted, Any shape can be used as long as the shape can prevent the rotation of each of them, and the shapes need not necessarily be similar.

As a method for manufacturing the bearing cap 4, a cap-shaped steel plate material formed by press deep drawing is simple and effective in both the manufacturing method and the mounting method.
Other examples include cast iron molded using a mold, and cast molding using a ceramic having high hardness. Further, when the end of the tubular core member 22 of the crosspiece 2 is hammered into the end of the tubular core member 22 with a mallet, a plurality of convex portions 42 provided on the cap-shaped side surface of the support member 4 and the tubular core member of the crosspiece 2 are formed. The inner wall 22 is fitted and fixed by being pressed between the inner walls.

A method of attaching the bearing cap 4 to the end of the tubular core member 22 of the crosspiece 2 is not shown in the drawing.
A plurality of small holes are provided in place of the two, and fitted to the end of the tubular core material 22 of the crosspiece 2 and fixed at the small hole portion with a tapping screw or spot welding.
A method of fixing to the inner wall is also conceivable.

The mounting of the bearing cap 4 on the tubular core member 22 can be performed at any time during the period from the stage of manufacturing the crosspiece 2 to immediately before the construction.

The washer 5 is provided with one notch recess 6 of the support 1.
Of the cross bar 2 and the end face of one of the crossbars 2 and is generally made of metal. In this washer 5,
As shown in FIG. 5 (b), a locking portion 51 is formed substantially perpendicularly to the front and back directions with respect to the plate of the washer 5, and the bolt 1 When the nut and the nut 8 are connected to each other by tightening, the locking portion 51 cuts into the bottom surface of the cutout recess 6 of the column 1 and the end surface of the crosspiece 2 to prevent rotation of the crosspiece 2.

Further, a connecting member insertion hole 52 is provided at the center of the washer 5 and has a diameter slightly larger than the cross-sectional size of the connecting member 3 from the turning head 32 to the bolt portion side. It has a circular shape.

The locking portion 51 of the washer 5 is provided with the end face of the crosspiece 2 and the notch 6
It must have rigidity enough to cut into the bottom surface of the steel plate. The material and the forming method are as follows. Examples thereof include those made of cast iron and those formed by casting using a ceramic having high hardness as a material.

The shape of the locking portion 51 is not particularly limited as long as it has a sharp tip, but it is preferable that the angle of the standing portion with respect to the plate is a right angle or an angle close thereto. .

With the above-described configuration, the crosspiece 2 is attached to the intermediate support 1.
Before assembling the artificial wooden fence, first, using the side where the nut 8 is fixed to the end of the crosspiece 2 to be connected, the assembling is started from the end post 10 located at the starting end of the fence. Start.

FIG. 6 shows an end post 10 and a cross bar 2 connected to the end post 10 located at the beginning of the assembly of the artificial wood fence.
7 is a view showing an example of an assembling structure of FIG. 7, and FIG. 7 is a view showing only the connecting member 9 used for the artificial wood fence of FIG. 6, and FIG. 7 (a) is a plan view thereof, and FIG. Is a front view thereof.

In these figures, reference numeral 9 denotes a connecting member with a pin, the head 90 of which has a locking piece 92 rotatable around the axis of a spring pin 91. When inserting the connecting member 9, a washer 93 or a nut 94 is temporarily inserted or screwed into the connecting member 9 with a pin in advance, and the locking piece 92 is connected to the connecting member 9 with a pin as shown in FIG. This is performed in a state where it is set parallel to the axis No. 9. When the locking piece 92 of the connecting member 9 with the pin enters the tubular core material 12 of the support post 10 through the end connecting material insertion hole 99, as shown in FIG. 6, it turns by its own weight and turns in the vertical direction. Locks automatically in state. Further, if the nut 94 is tightened via the washer 93, the connecting member 9 with the pin is securely fixed to the end post 10.

Next, the end of the crosspiece 2 is inserted into the cutout recess 6 in such a manner that the connecting member 9 with a pin is inserted into the support portion insertion hole 41 of the support cap 4 of the crosspiece 2, thereby forming the first crosspiece 2. After the connection, the tubular core 2
2, the nut 8 is provided in the end, and the connection of the intermediate support 1 and the crosspiece 2 of the present invention is continued.

The end post 1 located at the beginning of the fence
With respect to the connection between 0 and the crosspiece 2, the connection member 9 with the pin fixed to the connection material through hole 7 in the cutout recess 6 of the end post 10 as described above is fitted and fixed to the core material 22 of the crosspiece 2. The supporting portion insertion hole 41 of the bearing cap 4 is lightly supported and fits.

At the time of connection to the intermediate support 1, the other end of the rung 2 opposite to one side of the rung 2 fitted into the cutout recess 6 of the end support 10 located at the start end of the fence as described above, The washer 5 is temporarily attached so that the center is aligned with the end face on the side where the nut 8 is fixed to the core member 22. The means for temporary attachment is not particularly limited, but may be such that the washer 5 is hit with a mallet to slightly bite into the locking portion 51 on the end face side. Next, the end of the crosspiece 2 to which the washer 5 is temporarily attached is inserted into the existing notch recess 6 of the intermediate support 1.

Then, as shown in FIG. 2, through the connecting material through hole 7 opening in the cutout recess 6 on the right side of the intermediate support 1,
The bolt 31 of the connecting member 3 is inserted after passing through the washer 34, and the bolt 31 is screwed into the nut 8 fixed to the core member 22 of the crosspiece 2 on the left side in the figure to rotate the connecting member 3. Head 3
Even if 2 is locked via the washer 34, it is still slightly rotated and tightened. In this manner, one end of one crosspiece 2 and one intermediate support 1 are connected.

Subsequently, the connecting member 3 previously fixed is fitted to the tubular core member 22 of the next crosspiece 2 with the rod-shaped support portion 33 having a non-circular cross section exposed from the intermediate support 1. Non-circular support part insertion hole 41 of fixed bearing cap 4
Is inserted into the other cutout recess 6 of the intermediate support 1 while the non-true circular shapes are engaged with each other.

Subsequently, the other end of the crosspiece 2 can be connected to the next intermediate support 1 in the same manner as described above.

By doing so, the crosspiece 2
May be repeatedly connected, and finally, the end post 10 located at the end and the crosspiece 2 connected thereto may be assembled.

FIG. 8 is a view showing an example of an assembling structure of the end post 10 located at the end and the cross bar 2 connected thereto, and a terminal bolt insertion hole penetrating the upper portion of the end post 10. 98, the terminal bolt 95 passing through the end connecting material insertion hole 99 is screwed and tightened to the nut 8 fixed to the tubular core material 22 of the terminal crosspiece 2 connected as described above, thereby assembling the pseudo wood fence. To complete.

In the figure, 95 is a terminal bolt,
The bolt portion at the tip is the same as that of the embodiment shown in FIG. 2, but its head 96 is located at the end similarly to a normal bolt, and is a hexagon socket bolt (not shown). I have. A counterbore 97 is formed in the center of the other side surface of the column.

When the end post 10 is assembled, when the terminal bolt 95 is tightened, the terminal bolt 9 is inserted through the counterbore hole 97.
5 is inserted through a washer, and the male screw of the terminal bolt 95 is screwed into the nut 8 through the terminal bolt insertion hole 98, the end connecting material insertion hole 99, and the connecting material insertion hole 52, and tightened. Done.

[0044]

According to the present invention, a washer having locking portions formed on both sides of a plate is interposed between the bottom surface of one notch recess of the intermediate support and the end face of one crosspiece. A nut is fixed to an end in the tubular core of the crosspiece in advance, and a bolt is formed in the connecting material. One of the crosspieces and the column is fixed by the tightening force by the bolt of the connecting material. Therefore, the washer is tightened by the tightening force at the time of assembling, and the locking portions on both sides of the plate are cut into the end face of the crosspiece and the bottom face of the cutout recess of the column, respectively.

Therefore, the strut and the crosspiece are firmly fixed not only in the axial direction but also in the circumferential direction by the connecting member and the washer. It is possible to provide a safe fence without rotating or detaching from the support.

In addition, the support cap is fixedly fitted into the other end of the tubular core of the crosspiece and extends in a direction opposite to the bolt portion of the connecting member with respect to the non-circular support portion insertion hole of the support cap. By inserting a bar-shaped support portion having a non-circular cross section in a state where rotation of the connecting member of the bearing cap around the axis is prevented, the rotational force applied to the crosspiece is connected to the next through the connecting member via the connecting member. It is also intended to provide a function of preventing rotation of the crosspiece in the circumferential direction at both ends of the crosspiece by transmitting the information to the locking portion of the washer cut into between the end face of the crosspiece and the bottom surface of the cutout recess of the column. .

In view of this, regarding each of the crossbars, the outer circumferential rotational force applied to the crossbar, which is attached between the two intermediate supports, is distributed and borne by both ends of the crossbar,
It has a connection structure that reliably transmits force to the connection part with the support, and a series of connected crossbars functions as an integrated continuum, so resistance to sudden rotation force is large, and therefore durability It is possible to provide a safe pseudo-wood fence in which the crossbar does not rotate and does not come off the support even if a slight distortion or displacement occurs with time.

Further, the cross bar has a structure in which a nut is fixed to only one end of the tubular core of one cross bar.
The end cap of the other crossbar is snapped into the bearing cap, so that the nut can be fixed at the end of the assembly, for example, if a short one is needed at the end of assembly. Since it is possible to change the dimensions by cutting the other side that is not done, there is no need to manufacture in advance the rungs of the dimensions corresponding to each construction site, it is possible to immediately respond to the dimensions of the site, and therefore the material type is The number of fences can be reduced and fences can be provided with simple construction.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view partially broken away showing an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of a main part of a connecting portion between an intermediate support and a crosspiece in FIG. 1;

3A is a front view showing an example of a connecting member used in FIG. 1; FIG. 3B is a cross-sectional shape of a rod-shaped support portion taken along the line AA in FIG. 3A; It is a partial sectional view.

FIG. 4A is a front view showing an example of the bearing cap used in FIG. 1, and FIG. 4B is a side view thereof.

5A is a front view showing an example of the washer used in FIG. 1, and FIG. 5B is a top view showing the locking portion thereof.

FIG. 6 is an enlarged sectional view of a main part showing an example of an assembling structure of an end post located at a starting end of assembling of the artificial wood fence and a crosspiece.

FIG. 7 shows a connecting bolt used for the artificial wood fence of FIG. 6,
(A) is a plan view thereof, and (B) is a front view thereof.

FIG. 8 is an enlarged sectional view of a main part showing an example of an assembling structure of an end post and a crosspiece located at the end of the assembling of the artificial wood fence.

FIG. 9 is an enlarged cross-sectional view showing a connection structure between a conventional intermediate pillar of a false wooden fence and a crosspiece.

DESCRIPTION OF SYMBOLS 1 Intermediate column 10 End column 2 Crossbar 3 Connecting material 31 Bolt section 32 Rotating head 33 Bar-shaped support section 34 Washer 4 Bearing cap 41 Support section insertion hole 42 Convex section 43 Flange section 5 Washer 51 Engagement Stop 52 Connecting material insertion hole 6 Notch recess 7 Connecting material through hole 8 Nut

Claims (1)

[Claims] 1. A notch recess is provided on both sides of a post, a connecting member through hole is provided between the notches, and a connecting member penetrating hole is provided through the post, and an end of a crosspiece having a tubular core material is inserted into the notch recess. At the same time, a connecting material is inserted into the connecting material through-hole, and the fence is designed to connect the crosspiece to the column by the connecting material. A washer having a locking portion formed on both sides is interposed, a nut is fixed in an end of the core of the crosspiece, and a bolt portion of a connecting member is screwed and tightened with respect to the nut,
From the other cut-out recess of the pillar, a bar-shaped support portion having a non-circular cross section formed on the side opposite to the bolt portion of the connecting member is exposed, and the bar-shaped support portion fits into the end of the core material of the crosspiece. A support and a crosspiece of a fence, wherein the support cap is inserted into a non-circular support portion insertion hole of the fixed support cap in a state where the support cap is prevented from rotating around the axis of the connecting member. Connection structure.