JPH09242730A - Connecting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily set the outer diameter of a male screw for the gap of tip of a free state engaging piece by supporting a base end side on a base part, providing a plurality of engaging pieces protruded to a center side and a male screw tapered in its axial part outer diameter and inserting and fixing the male screw between the engaging pieces. SOLUTION: When the axial part of a male screw 12 is inserted into the long hole 16 of a fixing tool 15 and pushed in between the tips of engaging pieces 10, the engaging pieces 10 are elastically bent and deformed and the tips of the engaging pieces 10 are fitted in the screw groove of the male screw 12. Even if the force of a pulling-out direction is applied to the male screw 12, since the engaging pieces 10 are inclined obliquely to the inside, the male screw 12 is prevented from being pulled out. Since the outer diameter of the axial part of the male screw 12 is taped in its tip, for inserting the male screw 12 between the tips of the engaging pieces 10 without rotating the same, the male screw 12 gradually pushes open the tips of the engaging pieces 10 and thus the plastic deformation of the engaging pieces 10 and the damaging of the peak part of the male screw 12 are reduced. Thus, the size of the outer diameter of the male screw 12 is properly widened with respect to the engaging pieces 10 identical to each other in size and its setting is facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses an engaging member having a plurality of engaging pieces protruding at the common center side instead of the female thread, and pushing a male screw between the ends of the engaging pieces. Insert by tapping, hammering, screwing in,
The present invention relates to a connecting structure for connecting the engaging member and the male screw by engaging the tip of the engaging piece with the thread groove of the male screw.

[0002]

2. Description of the Related Art In a conventional connecting structure of this type using a speed nut or the like, a male screw is a normal one, that is, the outer diameter of the shaft portion is uniform and the flank angle of the flank on the screw rear end side and the screw tip side. The one with the same flank flank angle was used.

[0003]

For this reason, when inserting between the tips of the engaging pieces by pushing or hammering the male screw without rotating the male screw, the distance between the tips of the engaging pieces in the free state is increased. If the outer diameter of the shaft portion of the male screw is too small compared to the size of the gap, the tip of the engaging piece does not sufficiently engage with the thread groove of the male screw, and sufficient coupling strength cannot be obtained.
If the outer diameter of the male screw shaft is too large, the engaging piece and the male screw thread will be plastically deformed or destroyed, and sufficient coupling strength cannot be obtained. There is a drawback that it is difficult to set the size of the outer diameter of the shaft portion of the male screw with respect to the size of the gap between the tips of the pieces. In addition, when the engaging member does not use a material with high elasticity such as spring steel but uses a material with low spring property such as inexpensive mild steel, the outer diameter of the male screw shaft is free. Even if it is slightly larger than the gap between the tips of the engaging pieces in such a state, the engaging pieces will undergo large plastic deformation,
There is a problem that a good bond cannot be obtained.

Further, in the above-mentioned conventional coupling structure, when the male screw is rotated to be screwed between the tips of the engaging pieces so as to be inserted between the tips, there is a problem that the screwing operation cannot be smoothly performed. there were.

Further, the conventional coupling structure of this type has a problem that the tips of the engaging pieces cannot be engaged with the thread grooves of the male screw unless the plate thickness of the engaging pieces is thin.

The present invention has been made in view of such conventional circumstances, and the size of the outer diameter of the shaft portion of the male screw can be set with respect to the size of the gap between the tips of the engaging pieces in a free state. It is to provide an easy coupling structure.

Another object of the present invention is to provide a coupling structure in which an inexpensive material such as mild steel having a poor spring property can be used as a constituent material of the engaging member.

Another object of the present invention is to provide a coupling structure which enables a smooth screwing operation even when a male screw is rotated and screwed between the tips of the engaging pieces.

Another object of the present invention is to provide a connecting structure capable of engaging the tip of the engaging piece with the thread groove of the male screw even if the engaging piece is thick.

Further objects of the present invention will be apparent from the following description.

[0011]

According to the present invention, the outer diameter of the shaft portion of the male screw is tapered. Therefore, when the male screw is inserted between the tips by pushing or driving it between the tips without rotating the male screw, the thread of the male screw gradually spreads the tips of the engaging pieces. Therefore, the plastic deformation of the engaging piece and the breakage of the thread of the male screw can be reduced. Therefore,
The outer diameter range of the male screw shaft that is appropriate for the gap between the tips of the engaging pieces of the same size is widened, and the axis of the male screw with respect to the size of the gap between the tips of the engaging pieces in the free state is widened. The outer diameter of the part can be easily set.

Further, for the same reason, it becomes possible to use an inexpensive material such as mild steel having a poor spring property as a constituent material of the engaging member.

Further, since the outer diameter of the shaft portion of the male screw is tapered so that the tip of the engaging piece easily enters the thread groove of the male screw, the tip of the engaging piece is rotated by rotating the male screw. Even when screwed in between, the screwing work can be done smoothly, and even if the plate thickness of the engaging piece is thick,
The tip of the engaging piece can be engaged with the thread groove of the male screw.

If the flank angle of the flank on the screw rear end side of the thread of the male screw is made smaller than the flank angle of the flank on the screw tip side, the opening angle of the thread groove can be increased, so that the tip of the engaging piece has a male thread. The thread groove makes it easier to enter, and when the male screw is rotated and screwed between the tips of the engaging pieces, the screwing operation can be performed more smoothly and the plate thickness of the engaging pieces is even thicker. The tip of the engaging piece can be engaged with the thread groove of the male screw, and the resistance force when the male screw is pulled out from between the tips of the engaging piece can be increased.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is applied to a connecting structure for fixing a mesh panel to a panel support in a mesh fence will be described below.

[0016]

1 to 9 show a first embodiment of the present invention. Of these, FIGS. 1 and 2 show a support 1 and a panel support 2 of a mesh fence. The pillar 1 is made of a round pipe material. The panel support 2 is formed by connecting a support-side member 3 that is connected to the support 1 and a panel-side member 5 that supports a mesh panel 4 to be described later with bolts 6 and nuts 7.

The pillar-side member 3 is mounted on the pillar 1 by bolts 8 and nuts 9 so that the mounting angle of the pillar-side member 3 is variable in the circumferential direction with respect to the pillar 1. The panel-side member 5 is formed by pressing a metal plate such as a mild steel plate as a whole, and integrally has a cylindrical portion 5a and a pair of flat plate-shaped holding portions 5b. As shown in FIG. 5, the cylindrical portion 5a has a cylindrical shape whose cross section is not completely closed and whose lower portion is open. The holding portion 5b is
The cylindrical portions 5a project from one end of the cylindrical portion 5a in the axial direction of the cylindrical portion 5a, and in a free state, they are parallel to each other and face each other with a slight gap. The bolt 6 is inserted into the sandwiched portion 5b and the clamped portion 3a in a state where the flat plate-shaped clamped portion 3a provided in the support-side member 3 is inserted between these clamped portions 5b, and the bolt 6 is further inserted. 6 is screwed to the nut 7 fixed to the holding portion 5b. In the state where the bolt member 6 is loosened, the panel-side member 5 can be vertically rotated around the bolt 6 with respect to the support-side member 3, while when the bolt 6 is tightened, the panel-side member 3 is rotated with respect to the support-side member 3. The member 5 can be fixed at a desired angle.

As shown in FIGS. 3 to 5, the mesh panel 4 is formed by welding a plurality of metal wires 4a in a mesh shape, and is provided with a cylindrical portion 4b curved in a cylindrical shape on the upper portion thereof. In this state, the cylindrical portion 5a of the strut-side member 3 is inserted into the cylindrical portion 4b and is supported by the strut-side member 3. Therefore, as described above, by fixing the panel-side member 5 to the column-side member 3 at a desired angle, the mesh panel 4 can be supported to the column 1 at a desired angle.

The cylindrical portion 5a of the panel side member 5 of the panel support 2 constitutes the engaging member of the present invention in this embodiment. As shown in FIGS. 1 and 2, the cylindrical portion 5a is provided with a plurality of engaging pieces 10 radially protruding by a press work, the engaging pieces 10 projecting inwardly toward the common center side. The base end side of each engagement piece 10 is supported by the base portion 11 by continuing to the base portion 11 of the cylindrical portion 5a.

6 and 7 show the male screw 12 of the present invention in this embodiment. The male screw 12 has a taper shape in which the outer diameter of the shaft portion is tapered, and as shown in FIG. 7, the flank angle α of the flank 13 on the screw rear end side of the screw thread is the same as that of the screw thread. It is smaller than the flank angle β of the flank 14 on the screw tip side.

As shown in FIGS. 3 and 4, the fastener 1
5 is formed by pressing a metal plate such as a mild steel plate, and is provided with an elongated hole 16 in the center and pressing portions 17 curved in a channel shape on both sides.

In this embodiment, the male screw 12 is inserted between the tips of the engaging pieces 10 as follows, and the panel support 2
The mesh panel 4 can be fixed to the.

As shown in FIGS. 3 and 4, with the cylindrical portion 5a of the panel side member 5 of the panel support 2 inserted in the cylindrical portion 4b of the mesh panel 4, the fastener 15 is attached to the mesh panel. The wire 4a of the tubular part 4b
It is placed on the engagement piece 10 while being pressed by 7. next,
In this state, the shaft portion of the male screw 12 is inserted into the elongated hole 16 of the fastener 15, and the shaft portion of the male screw 12 is further rotated between the tips of the engaging pieces 10 as shown in FIGS. Push it in or hit it without pushing. Then, the engaging piece 1
The elastic bending deformation of 0 causes the tip of the engaging piece 10 to go over the thread of the male screw 12, and the head 12a of the male screw 12 is brought into contact with the fastener 15 to stop the pushing or driving of the male screw 12. Then, as shown in FIGS. 4 and 9, the tip of the engaging piece 10 engages with the thread groove of the male screw 12. Here, even if a force acts on the male screw 12 in the pull-out direction, since the engaging piece 10 is inclined inward, the tip of the engaging piece 10 is even more strongly brought into contact with the thread groove of the male screw 12. Therefore, the retainer 8 cannot be removed (even if the engaging piece 10 has a structure in which the engaging piece 10 is not tilted inward when it is free, the gap between the tips of the engaging piece 10 in the free state is small). If the engaging pieces 10 are smaller than the outer diameter of the shaft portion of the male screw 12 and the male screw 12 is pushed or hammered, if the engaging pieces 10 are inclined downward, a force acts on the male screw 12 in the pull-out direction. Even if it is done, the male screw 12 still does not come off.) In this way, the male screw 12 and the cylindrical portion 5a are coupled, and the male screw 1
A fastener 15 is sandwiched between the second head 12a and the cylindrical portion 5a, and the fastener 15 holds the wire 4a to fix the mesh panel 4 to the cylindrical portion 5a.

If necessary, the male screw 12 is pushed or driven between the tips of the engaging piece 10 as described above, and then the male screw 12 is further rotated in the tightening direction. Moves relatively along the spiral of the thread groove of the male screw 12, so that the male screw 12 tries to descend further, while the tip of the engaging piece 10 resists the elasticity of the engaging piece, and the head of the male screw 12 moves. Since it is about to be lifted to the side of 12a, the fastener 15 can be more firmly tightened to the male screw 12.

Here, in this coupling structure, since the outer diameter of the shaft portion of the male screw 12 is tapered, the male screw 12 is pushed between the tips of the engaging pieces 10 without rotating. , The outer diameter of the shaft portion of the male screw 12 gradually widens the space between the tips of the engaging pieces 10, so that the engaging pieces 1
It is possible to reduce the plastic deformation of 0 and the breakage of the threads of the male screw 12. Therefore, the range of the outer diameter of the shaft portion of the male screw 12 that is appropriate for the gap between the tips of the engaging pieces 10 of the same size is wide, and the engaging piece 1 in a free state.
It becomes easy to set the size of the outer diameter of the shaft portion of the male screw 12 with respect to the size of the gap between the tips of zero.

For the same reason, an inexpensive material such as mild steel having a poor spring property can be used as a constituent material of the cylindrical portion (engaging member) 5a.

Further, in this coupling structure, the engaging piece 1 is made by screwing the male screw 12 instead of pushing or driving the male screw 12 as described above.
It is also possible to insert the male screw 12 between the tips of 0. In this case, since the outer diameter of the shaft portion of the male screw 12 is tapered so that the tip of the engaging piece 10 easily enters the thread groove of the male screw 12, the screwing operation should be performed smoothly. In addition, even if the plate thickness of the engagement piece 10 is thick, the tip of the engagement piece 10 can be engaged with the thread groove of the male screw 12.

Further, in this embodiment, the flank angle α of the flank 13 on the screw rear end side of the thread of the male thread is made smaller than the flank angle β of the flank 14 on the screw tip side of the thread, so that the thread groove is formed. Since the opening angle γ of can be increased,
The tip of the engaging piece 10 is more easily inserted into the thread groove of the male screw 12, so that the screwing operation can be performed more smoothly, and even if the plate thickness of the engaging piece 10 is further increased, The tip can be engaged with the thread groove of the male screw, and the resistance force when the male screw 12 is pulled out from between the tips of the engaging pieces 10 can be increased.

10 to 14 show a second embodiment of the present invention. As shown in FIGS. 10 and 11, a plurality of pairs of engaging pieces 10 of two pieces are formed at predetermined intervals on the cylindrical portion 5a of the panel side member 5 of the panel support tool 2 by press working. Linearly 1 in the direction parallel to the axial direction of the cylindrical portion 5a.
They are arranged in rows. Two engaging pieces 10 of each set
Respectively extend vertically and obliquely inward with respect to the direction parallel to the axial direction of the cylindrical portion 5a, and the tips are opposed to each other with a gap. Further, the base end side of each engaging piece 10 is connected to the base part 11 of the cylindrical part 5a, so that the base part 11
It is supported by. A concave portion 18 that is recessed in an arc shape is provided at the tip of each engagement piece 10.

As shown in FIGS. 12 and 13, the fastener 15 has substantially the same shape as the fastener 15 of the first embodiment, except that a round hole 19 is provided in the center instead of the elongated hole 16. Has been.

Also in this embodiment, as shown in FIGS. 12 and 13, it is fastened with the cylindrical portion 5a of the panel side member 5 of the panel support 2 inserted in the cylindrical portion 4b of the mesh panel 4. The tool 15 is attached to the reticulated panel 4 by the pressing portion 17.
The wire 4a is placed on the engaging piece 10 so as to be pressed. Next, in this state, the male screw 12 similar to that of the first embodiment is inserted into the round hole 19 of the fastener 15, and the male screw 12 is inserted.
Is further inserted between the tips of a suitable set of engaging pieces 10 by pushing, driving, or rotating and screwing without rotating. Then, similarly to the first embodiment, the tip of the engaging piece 10 engages with the thread groove of the male screw 12, the male screw 12 and the cylindrical portion 5a are coupled, and the head 12a of the male screw 12 and the cylindrical portion 5a. The fastener 15 is sandwiched between 5a and 5a, and the fastener 15 further presses the wire 4a of the tubular portion 4b of the mesh panel 4,
The mesh panel 4 is fixed to the cylindrical portion 5a.

Also in this embodiment, since the outer diameter of the shaft portion of the male screw 12 is tapered,
The same effect as that of the first embodiment can be obtained. Further, in the first embodiment, the position of the fastener 15 with respect to the cylindrical portion 5a is adjusted by adjusting the insertion position of the male screw 12 into the elongated hole 16, but in the present embodiment, a plurality of sets are selected. Select an appropriate set of engagement pieces 10 and select male screw 1
The adjustment can be performed by inserting 2.

Further, in this embodiment, since the recesses 18 which are recessed in an arc shape are provided at the tips of the respective engaging pieces 10, the male screw 12 inserted between the tips of the two engaging pieces 10 is engaged. It can be prevented from coming off from between the tips of the joint pieces 10.

Although each of the above-described embodiments is an example in which the present invention is applied to the connecting structure of the net-like panel and the panel support in the net-like fence, the present invention can be applied to other kinds of connecting structures. .

[0035]

As described above, the bonding structure according to the present invention is
(A) It is easy to set the size of the outer diameter of the shaft portion of the male screw with respect to the size of the gap between the tips of the engaging pieces in the free state. Inexpensive materials such as scarce mild steel can be used.
When rotating the male screw and screwing it between the tips of the engaging pieces,
The screwing operation can be carried out smoothly, and (d) even if the plate thickness of the engaging piece is large, the tip of the engaging piece can be engaged with the thread groove of the male screw, and other excellent effects can be obtained. is there.

[Brief description of drawings]

FIG. 1 is a plan view showing columns and a panel support of a mesh fence in a first embodiment of the present invention.

FIG. 2 is a front view showing a partial cross-section of the support pillars and panel support of the mesh fence in the first embodiment.

FIG. 3 is a plan view showing the first embodiment.

FIG. 4 is a front view showing a partial cross-section of the first embodiment.

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6 is an enlarged front view showing a male screw in the first embodiment.

FIG. 7 is an enlarged cross-sectional view showing a thread of the male screw.

FIG. 8 is an enlarged cross-sectional view showing a process in which the male screw is inserted between the tips of the engaging pieces in the first embodiment.

FIG. 9 is an enlarged cross-sectional view showing a main part of the first embodiment.

FIG. 10 is a plan view showing a panel support for a mesh fence according to a second embodiment of the present invention.

11 is a sectional view taken along line XI-XI in FIG.

FIG. 12 is a plan view showing the second embodiment.

13 is a sectional view taken along line XIII-XIII in FIG.

FIG. 14 is an enlarged cross-sectional view showing the main parts of the second embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support post 4 Net-like panel 4a Wire 4b Cylindrical part 5 Panel support 5a Cylindrical part (engaging member) 10 Engaging piece 11 Base part 12 Male screw 13 Frank on the rear end side of the screw thread 14 On the screw tip side of the screw thread Frank 15 Fastener 16 Long hole 18 Recess 19 Round hole

Claims (8)

[Claims] 1. A base portion, a plurality of engagement pieces having a base end side supported by the base portion, and a tip end protruding toward a common center side, and a shaft portion having a tapered outer diameter. And a male screw, the male screw is inserted between the tips of the engaging pieces, and the tip of the engaging piece is engaged with the thread groove of the male screw. 2. A plurality of combinations of two engaging pieces whose tips are protruded toward a common center side are provided side by side at predetermined intervals, and an engagement of a selected set of these plurality of sets is provided. The coupling structure according to claim 1, wherein the male screw is inserted between the pieces. 3. The coupling structure according to claim 2, wherein the engaging piece is provided at its tip with a concave portion that is recessed in an arc shape. 4. The coupling structure according to claim 1, wherein the flank angle of the flank of the thread of the male thread on the screw rear end side is smaller than the flank angle of the flank on the screw tip side. 5. A net-shaped panel formed by connecting wires in a net shape and having a tubular portion curved in a tubular shape, a support, a panel support attached to the support, and a panel support provided on the support. A connecting structure for fixing the mesh panel to the cylindrical portion of the panel support in a mesh fence having a cylindrical portion that is inserted into the cylindrical portion of the mesh panel and supports the mesh panel. While the base end side is supported by the base part of the cylindrical part of the panel support, a plurality of engaging pieces projecting the tip toward the common center side, a hole in the center part, and a holding part on both sides are provided. Each has a fastener and a tapered male screw that tapers the outer diameter of the shaft portion, the male screw is inserted between the hole of the fastener and the tip of the engaging piece, the male screw The tip of the engaging piece is engaged with the thread groove of , Coupling structure wherein comprising wire pressed in the mesh fence through the pressing unit by the external thread. 6. A plurality of sets of two engaging pieces whose tips are projected toward a common center side are provided side by side at a predetermined interval, and an engagement of a selected set of these plurality of sets is provided. The coupling structure according to claim 5, wherein the male screw is inserted between the pieces. 7. The coupling structure according to claim 6, wherein a concave portion that is recessed in an arc shape is provided at a tip of the engagement piece. 8. The coupling structure according to claim 5, wherein the flank angle of the flank of the thread of the male thread on the screw rear end side is smaller than the flank angle of the flank on the screw tip side.